Fix variable for container name

.github/CODEOWNERS

@@ -1,10 +1,10 @@
 * @juanfont @kradalby
 
-*.md @ohdearaugustin @nblock
-*.yml @ohdearaugustin @nblock
-*.yaml @ohdearaugustin @nblock
-Dockerfile* @ohdearaugustin @nblock
-.goreleaser.yaml @ohdearaugustin @nblock
-/docs/ @ohdearaugustin @nblock
-/.github/workflows/ @ohdearaugustin @nblock
-/.github/renovate.json @ohdearaugustin @nblock
+*.md @ohdearaugustin
+*.yml @ohdearaugustin
+*.yaml @ohdearaugustin
+Dockerfile* @ohdearaugustin
+.goreleaser.yaml @ohdearaugustin
+/docs/ @ohdearaugustin
+/.github/workflows/ @ohdearaugustin
+/.github/renovate.json @ohdearaugustin

.github/FUNDING.yml

@@ -1,3 +1,2 @@
-# These are supported funding model platforms
-
-ko_fi: headscale
+ko_fi: kradalby
+github: [kradalby]

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: "Bug report"
+about: "Create a bug report to help us improve"
+title: ""
+labels: ["bug"]
+assignees: ""
+---
+
+<!-- Headscale is a multinational community across the globe. Our common language is English. Please consider raising the bug report in this language. -->
+
+**Bug description**
+
+<!-- A clear and concise description of what the bug is. Describe the expected bahavior
+  and how it is currently different. If you are unsure if it is a bug, consider discussing
+  it on our Discord server first. -->
+
+**To Reproduce**
+
+<!-- Steps to reproduce the behavior. -->
+
+**Context info**
+
+<!-- Please add relevant information about your system. For example:
+- Version of headscale used
+- Version of tailscale client
+- OS (e.g. Linux, Mac, Cygwin, WSL, etc.) and version
+- Kernel version
+- The relevant config parameters you used
+- Log output
+-->

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -1,97 +0,0 @@
-name: 🐞 Bug
-description: File a bug/issue
-title: "[Bug] <title>"
-labels: ["bug", "needs triage"]
-body:
-  - type: checkboxes
-    attributes:
-      label: Is this a support request?
-      description: This issue tracker is for bugs and feature requests only. If you need help, please use ask in our Discord community
-      options:
-        - label: This is not a support request
-          required: true
-  - type: checkboxes
-    attributes:
-      label: Is there an existing issue for this?
-      description: Please search to see if an issue already exists for the bug you encountered.
-      options:
-        - label: I have searched the existing issues
-          required: true
-  - type: textarea
-    attributes:
-      label: Current Behavior
-      description: A concise description of what you're experiencing.
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Expected Behavior
-      description: A concise description of what you expected to happen.
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Steps To Reproduce
-      description: Steps to reproduce the behavior.
-      placeholder: |
-        1. In this environment...
-        1. With this config...
-        1. Run '...'
-        1. See error...
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Environment
-      description: |
-        Please provide information about your environment.
-        If you are using a container, always provide the headscale version and not only the Docker image version.
-        Please do not put "latest".
-
-        If you are experiencing a problem during an upgrade, please provide the versions of the old and new versions of Headscale and Tailscale.
-
-        examples:
-          - **OS**: Ubuntu 24.04
-          - **Headscale version**: 0.24.3
-          - **Tailscale version**: 1.80.0
-      value: |
-        - OS:
-        - Headscale version:
-        - Tailscale version:
-      render: markdown
-    validations:
-      required: true
-  - type: checkboxes
-    attributes:
-      label: Runtime environment
-      options:
-        - label: Headscale is behind a (reverse) proxy
-          required: false
-        - label: Headscale runs in a container
-          required: false
-  - type: textarea
-    attributes:
-      label: Debug information
-      description: |
-        Links? References? Anything that will give us more context about the issue you are encountering.
-        If **any** of these are omitted we will likely close your issue, do **not** ignore them.
-
-        - Client netmap dump (see below)
-        - Policy configuration
-        - Headscale configuration
-        - Headscale log (with `trace` enabled)
-
-        Dump the netmap of tailscale clients:
-        `tailscale debug netmap > DESCRIPTIVE_NAME.json`
-
-        Dump the status of tailscale clients:
-        `tailscale status --json > DESCRIPTIVE_NAME.json`
-
-        Get the logs of a Tailscale client that is not working as expected.
-        `tailscale daemon-logs`
-
-        Tip: You can attach images or log files by clicking this area to highlight it and then dragging files in.
-        **Ensure** you use formatting for files you attach.
-        Do **not** paste in long files.
-    validations:
-      required: true

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: "Feature request"
+about: "Suggest an idea for headscale"
+title: ""
+labels: ["enhancement"]
+assignees: ""
+---
+
+<!-- Headscale is a multinational community across the globe. Our common language is English. Please consider raising the feature request in this language. -->
+
+**Feature request**
+
+<!-- A clear and precise description of what new or changed feature you want. -->
+
+<!-- Please include the reason, why you would need the feature. E.g. what problem
+  does it solve? Or which workflow is currently frustrating and will be improved by
+  this? -->

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -1,36 +0,0 @@
-name: 🚀 Feature Request
-description: Suggest an idea for Headscale
-title: "[Feature] <title>"
-labels: [enhancement]
-body:
-  - type: textarea
-    attributes:
-      label: Use case
-      description: Please describe the use case for this feature.
-      placeholder: |
-        <!-- Include the reason, why you would need the feature. E.g. what problem
-          does it solve? Or which workflow is currently frustrating and will be improved by
-          this? -->
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Description
-      description: A clear and precise description of what new or changed feature you want.
-    validations:
-      required: true
-  - type: checkboxes
-    attributes:
-      label: Contribution
-      description: Are you willing to contribute to the implementation of this feature?
-      options:
-        - label: I can write the design doc for this feature
-          required: false
-        - label: I can contribute this feature
-          required: false
-  - type: textarea
-    attributes:
-      label: How can it be implemented?
-      description: Free text for your ideas on how this feature could be implemented.
-    validations:
-      required: false

.github/ISSUE_TEMPLATE/other_issue.md

@@ -0,0 +1,30 @@
+---
+name: "Other issue"
+about: "Report a different issue"
+title: ""
+labels: ["bug"]
+assignees: ""
+---
+
+<!-- Headscale is a multinational community across the globe. Our common language is English. Please consider raising the issue in this language. -->
+
+<!-- If you have a question, please consider using our Discord for asking questions -->
+
+**Issue description**
+
+<!-- Please add your issue description. -->
+
+**To Reproduce**
+
+<!-- Steps to reproduce the behavior. -->
+
+**Context info**
+
+<!-- Please add relevant information about your system. For example:
+- Version of headscale used
+- Version of tailscale client
+- OS (e.g. Linux, Mac, Cygwin, WSL, etc.) and version
+- Kernel version
+- The relevant config parameters you used
+- Log output
+-->

.github/pull_request_template.md

@@ -1,18 +1,6 @@
-<!--
-Headscale is "Open Source, acknowledged contribution", this means that any
-contribution will have to be discussed with the Maintainers before being submitted.
-
-This model has been chosen to reduce the risk of burnout by limiting the
-maintenance overhead of reviewing and validating third-party code.
-
-Headscale is open to code contributions for bug fixes without discussion.
-
-If you find mistakes in the documentation, please submit a fix to the documentation.
--->
-
 <!-- Please tick if the following things apply. You… -->
 
-- [ ] have read the [CONTRIBUTING.md](./CONTRIBUTING.md) file
+- [ ] read the [CONTRIBUTING guidelines](README.md#contributing)
 - [ ] raised a GitHub issue or discussed it on the projects chat beforehand
 - [ ] added unit tests
 - [ ] added integration tests

.github/renovate.json

@@ -6,27 +6,31 @@
   "onboarding": false,
   "extends": ["config:base", ":rebaseStalePrs"],
   "ignorePresets": [":prHourlyLimit2"],
-  "enabledManagers": ["dockerfile", "gomod", "github-actions", "regex"],
+  "enabledManagers": ["dockerfile", "gomod", "github-actions","regex" ],
   "includeForks": true,
   "repositories": ["juanfont/headscale"],
   "platform": "github",
   "packageRules": [
     {
-      "matchDatasources": ["go"],
-      "groupName": "Go modules",
-      "groupSlug": "gomod",
-      "separateMajorMinor": false
+        "matchDatasources": ["go"],
+        "groupName": "Go modules",
+        "groupSlug": "gomod",
+        "separateMajorMinor": false
     },
     {
-      "matchDatasources": ["docker"],
-      "groupName": "Dockerfiles",
-      "groupSlug": "dockerfiles"
-    }
+        "matchDatasources": ["docker"],
+        "groupName": "Dockerfiles",
+        "groupSlug": "dockerfiles"
+    } 
   ],
   "regexManagers": [
     {
-      "fileMatch": [".github/workflows/.*.yml$"],
-      "matchStrings": ["\\s*go-version:\\s*\"?(?<currentValue>.*?)\"?\\n"],
+      "fileMatch": [
+          ".github/workflows/.*.yml$"
+      ],
+      "matchStrings": [
+        "\\s*go-version:\\s*\"?(?<currentValue>.*?)\"?\\n"
+      ],
       "datasourceTemplate": "golang-version",
       "depNameTemplate": "actions/go-version"
     }

.github/workflows/build.yml

@@ -8,88 +8,35 @@ on:
     branches:
       - main
 
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
 jobs:
-  build-nix:
+  build:
     runs-on: ubuntu-latest
-    permissions: write-all
+
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
         with:
           fetch-depth: 2
+
       - name: Get changed files
         id: changed-files
-        uses: dorny/paths-filter@v3
+        uses: tj-actions/changed-files@v14.1
         with:
-          filters: |
-            files:
-              - '*.nix'
-              - 'go.*'
-              - '**/*.go'
-              - 'integration_test/'
-              - 'config-example.yaml'
-      - uses: DeterminateSystems/nix-installer-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-        if: steps.changed-files.outputs.files == 'true'
+          files: |
+            *.nix
+            go.*
+            **/*.go
+            integration_test/
+            config-example.yaml
 
-      - name: Run nix build
-        id: build
-        if: steps.changed-files.outputs.files == 'true'
-        run: |
-          nix build |& tee build-result
-          BUILD_STATUS="${PIPESTATUS[0]}"
+      - uses: cachix/install-nix-action@v16
+        if: steps.changed-files.outputs.any_changed == 'true'
 
-          OLD_HASH=$(cat build-result | grep specified: | awk -F ':' '{print $2}' | sed 's/ //g')
-          NEW_HASH=$(cat build-result | grep got: | awk -F ':' '{print $2}' | sed 's/ //g')
+      - name: Run build
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: nix build
 
-          echo "OLD_HASH=$OLD_HASH" >> $GITHUB_OUTPUT
-          echo "NEW_HASH=$NEW_HASH" >> $GITHUB_OUTPUT
-
-          exit $BUILD_STATUS
-
-      - name: Nix gosum diverging
-        uses: actions/github-script@v6
-        if: failure() && steps.build.outcome == 'failure'
-        with:
-          github-token: ${{secrets.GITHUB_TOKEN}}
-          script: |
-            github.rest.pulls.createReviewComment({
-              pull_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: 'Nix build failed with wrong gosum, please update "vendorSha256" (${{ steps.build.outputs.OLD_HASH }}) for the "headscale" package in flake.nix with the new SHA: ${{ steps.build.outputs.NEW_HASH }}'
-            })
-
-      - uses: actions/upload-artifact@v4
-        if: steps.changed-files.outputs.files == 'true'
+      - uses: actions/upload-artifact@v2
+        if: steps.changed-files.outputs.any_changed == 'true'
         with:
           name: headscale-linux
           path: result/bin/headscale
-  build-cross:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        env:
-          - "GOARCH=arm   GOOS=linux GOARM=5"
-          - "GOARCH=arm   GOOS=linux GOARM=6"
-          - "GOARCH=arm   GOOS=linux GOARM=7"
-          - "GOARCH=arm64 GOOS=linux"
-          - "GOARCH=386   GOOS=linux"
-          - "GOARCH=amd64 GOOS=linux"
-          - "GOARCH=arm64 GOOS=darwin"
-          - "GOARCH=amd64 GOOS=darwin"
-    steps:
-      - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-
-      - name: Run go cross compile
-        run: env ${{ matrix.env }} nix develop --command -- go build -o "headscale" ./cmd/headscale
-      - uses: actions/upload-artifact@v4
-        with:
-          name: "headscale-${{ matrix.env }}"
-          path: "headscale"

.github/workflows/check-tests.yaml

@@ -1,41 +0,0 @@
-name: Check integration tests workflow
-
-on: [pull_request]
-
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  check-tests:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 2
-      - name: Get changed files
-        id: changed-files
-        uses: dorny/paths-filter@v3
-        with:
-          filters: |
-            files:
-              - '*.nix'
-              - 'go.*'
-              - '**/*.go'
-              - 'integration_test/'
-              - 'config-example.yaml'
-      - uses: DeterminateSystems/nix-installer-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-        if: steps.changed-files.outputs.files == 'true'
-
-      - name: Generate and check integration tests
-        if: steps.changed-files.outputs.files == 'true'
-        run: |
-          nix develop --command bash -c "cd .github/workflows && go generate"
-          git diff --exit-code .github/workflows/test-integration.yaml
-
-      - name: Show missing tests
-        if: failure()
-        run: |
-          git diff .github/workflows/test-integration.yaml

.github/workflows/contributors.yml

@@ -0,0 +1,35 @@
+name: Contributors
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+jobs:
+  add-contributors:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Delete upstream contributor branch
+        # Allow continue on failure to account for when the
+        # upstream branch is deleted or does not exist.
+        continue-on-error: true
+        run: git push origin --delete update-contributors
+      - name: Create up-to-date contributors branch
+        run: git checkout -B update-contributors
+      - name: Push empty contributors branch
+        run: git push origin update-contributors
+      - name: Switch back to main
+        run: git checkout main
+      - uses: BobAnkh/add-contributors@v0.2.2
+        with:
+          CONTRIBUTOR: "## Contributors"
+          COLUMN_PER_ROW: "6"
+          ACCESS_TOKEN: ${{secrets.GITHUB_TOKEN}}
+          IMG_WIDTH: "100"
+          FONT_SIZE: "14"
+          PATH: "/README.md"
+          COMMIT_MESSAGE: "docs(README): update contributors"
+          AVATAR_SHAPE: "round"
+          BRANCH: "update-contributors"
+          PULL_REQUEST: "main"

.github/workflows/docs-deploy.yml

@@ -1,51 +0,0 @@
-name: Deploy docs
-
-on:
-  push:
-    branches:
-      # Main branch for development docs
-      - main
-
-      # Doc maintenance branches
-      - doc/[0-9]+.[0-9]+.[0-9]+
-    tags:
-      # Stable release tags
-      - v[0-9]+.[0-9]+.[0-9]+
-    paths:
-      - "docs/**"
-      - "mkdocs.yml"
-  workflow_dispatch:
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Install python
-        uses: actions/setup-python@v5
-        with:
-          python-version: 3.x
-      - name: Setup cache
-        uses: actions/cache@v4
-        with:
-          key: ${{ github.ref }}
-          path: .cache
-      - name: Setup dependencies
-        run: pip install -r docs/requirements.txt
-      - name: Configure git
-        run: |
-          git config user.name github-actions
-          git config user.email github-actions@github.com
-      - name: Deploy development docs
-        if: github.ref == 'refs/heads/main'
-        run: mike deploy --push development unstable
-      - name: Deploy stable docs from doc branches
-        if: startsWith(github.ref, 'refs/heads/doc/')
-        run: mike deploy --push ${GITHUB_REF_NAME##*/}
-      - name: Deploy stable docs from tag
-        if: startsWith(github.ref, 'refs/tags/v')
-        # This assumes that only newer tags are pushed
-        run: mike deploy --push --update-aliases ${GITHUB_REF_NAME#v} stable latest

.github/workflows/docs-test.yml

@@ -1,27 +0,0 @@
-name: Test documentation build
-
-on: [pull_request]
-
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - name: Install python
-        uses: actions/setup-python@v5
-        with:
-          python-version: 3.x
-      - name: Setup cache
-        uses: actions/cache@v4
-        with:
-          key: ${{ github.ref }}
-          path: .cache
-      - name: Setup dependencies
-        run: pip install -r docs/requirements.txt
-      - name: Build docs
-        run: mkdocs build --strict

.github/workflows/gh-action-integration-generator.go

@@ -1,74 +0,0 @@
-package main
-
-//go:generate go run ./gh-action-integration-generator.go
-
-import (
-	"bytes"
-	"fmt"
-	"log"
-	"os/exec"
-	"strings"
-)
-
-func findTests() []string {
-	rgBin, err := exec.LookPath("rg")
-	if err != nil {
-		log.Fatalf("failed to find rg (ripgrep) binary")
-	}
-
-	args := []string{
-		"--regexp", "func (Test.+)\\(.*",
-		"../../integration/",
-		"--replace", "$1",
-		"--sort", "path",
-		"--no-line-number",
-		"--no-filename",
-		"--no-heading",
-	}
-
-	cmd := exec.Command(rgBin, args...)
-	var out bytes.Buffer
-	cmd.Stdout = &out
-	err = cmd.Run()
-	if err != nil {
-		log.Fatalf("failed to run command: %s", err)
-	}
-
-	tests := strings.Split(strings.TrimSpace(out.String()), "\n")
-	return tests
-}
-
-func updateYAML(tests []string, testPath string) {
-	testsForYq := fmt.Sprintf("[%s]", strings.Join(tests, ", "))
-
-	yqCommand := fmt.Sprintf(
-		"yq eval '.jobs.integration-test.strategy.matrix.test = %s' %s -i",
-		testsForYq,
-		testPath,
-	)
-	cmd := exec.Command("bash", "-c", yqCommand)
-
-	var stdout bytes.Buffer
-	var stderr bytes.Buffer
-	cmd.Stdout = &stdout
-	cmd.Stderr = &stderr
-	err := cmd.Run()
-	if err != nil {
-		log.Printf("stdout: %s", stdout.String())
-		log.Printf("stderr: %s", stderr.String())
-		log.Fatalf("failed to run yq command: %s", err)
-	}
-
-	fmt.Printf("YAML file (%s) updated successfully\n", testPath)
-}
-
-func main() {
-	tests := findTests()
-
-	quotedTests := make([]string, len(tests))
-	for i, test := range tests {
-		quotedTests[i] = fmt.Sprintf("\"%s\"", test)
-	}
-
-	updateYAML(quotedTests, "./test-integration.yaml")
-}

.github/workflows/gh-actions-updater.yaml

@@ -1,23 +0,0 @@
-name: GitHub Actions Version Updater
-
-on:
-  schedule:
-    # Automatically run on every Sunday
-    - cron: "0 0 * * 0"
-
-jobs:
-  build:
-    if: github.repository == 'juanfont/headscale'
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          # [Required] Access token with `workflow` scope.
-          token: ${{ secrets.WORKFLOW_SECRET }}
-
-      - name: Run GitHub Actions Version Updater
-        uses: saadmk11/github-actions-version-updater@v0.8.1
-        with:
-          # [Required] Access token with `workflow` scope.
-          token: ${{ secrets.WORKFLOW_SECRET }}

.github/workflows/lint.yml

@@ -1,75 +1,76 @@
-name: Lint
+---
+name: CI
 
-on: [pull_request]
-
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
+on: [push, pull_request]
 
 jobs:
   golangci-lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
         with:
           fetch-depth: 2
+
       - name: Get changed files
         id: changed-files
-        uses: dorny/paths-filter@v3
+        uses: tj-actions/changed-files@v14.1
         with:
-          filters: |
-            files:
-              - '*.nix'
-              - 'go.*'
-              - '**/*.go'
-              - 'integration_test/'
-              - 'config-example.yaml'
-      - uses: DeterminateSystems/nix-installer-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-        if: steps.changed-files.outputs.files == 'true'
+          files: |
+            *.nix
+            go.*
+            **/*.go
+            integration_test/
+            config-example.yaml
 
       - name: golangci-lint
-        if: steps.changed-files.outputs.files == 'true'
-        run: nix develop --command -- golangci-lint run --new-from-rev=${{github.event.pull_request.base.sha}} --out-format=colored-line-number
+        if: steps.changed-files.outputs.any_changed == 'true'
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.46.1
+
+          # Only block PRs on new problems.
+          # If this is not enabled, we will end up having PRs
+          # blocked because new linters has appared and other
+          # parts of the code is affected.
+          only-new-issues: true
 
   prettier-lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
         with:
           fetch-depth: 2
+
       - name: Get changed files
         id: changed-files
-        uses: dorny/paths-filter@v3
+        uses: tj-actions/changed-files@v14.1
         with:
-          filters: |
-            files:
-              - '*.nix'
-              - '**/*.md'
-              - '**/*.yml'
-              - '**/*.yaml'
-              - '**/*.ts'
-              - '**/*.js'
-              - '**/*.sass'
-              - '**/*.css'
-              - '**/*.scss'
-              - '**/*.html'
-      - uses: DeterminateSystems/nix-installer-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-        if: steps.changed-files.outputs.files == 'true'
+          files: |
+            *.nix
+            **/*.md
+            **/*.yml
+            **/*.yaml
+            **/*.ts
+            **/*.js
+            **/*.sass
+            **/*.css
+            **/*.scss
+            **/*.html
 
       - name: Prettify code
-        if: steps.changed-files.outputs.files == 'true'
-        run: nix develop --command -- prettier --no-error-on-unmatched-pattern --ignore-unknown --check **/*.{ts,js,md,yaml,yml,sass,css,scss,html}
+        if: steps.changed-files.outputs.any_changed == 'true'
+        uses: creyD/prettier_action@v4.0
+        with:
+          prettier_options: >-
+            --check **/*.{ts,js,md,yaml,yml,sass,css,scss,html}
+          only_changed: false
+          dry: true
 
   proto-lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-
-      - name: Buf lint
-        run: nix develop --command -- buf lint proto
+      - uses: actions/checkout@v2
+      - uses: bufbuild/buf-setup-action@v0.7.0
+      - uses: bufbuild/buf-lint-action@v1
+        with:
+          input: "proto"

.github/workflows/release.yml

@@ -1,5 +1,5 @@
 ---
-name: Release
+name: release
 
 on:
   push:
@@ -9,31 +9,221 @@ on:
 
 jobs:
   goreleaser:
-    if: github.repository == 'juanfont/headscale'
+    runs-on: ubuntu-18.04 # due to CGO we need to user an older version
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.18.0
+
+      - name: Install dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y gcc-aarch64-linux-gnu
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          distribution: goreleaser
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  docker-release:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
         with:
           fetch-depth: 0
-
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Set up QEMU for multiple platforms
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: arm64,amd64
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/headscale
+            ghcr.io/${{ github.repository_owner }}/headscale
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=raw,value=latest
+            type=sha
       - name: Login to DockerHub
-        uses: docker/login-action@v3
+        uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-
       - name: Login to GHCR
-        uses: docker/login-action@v3
+        uses: docker/login-action@v1
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          context: .
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new
+          build-args: |
+            VERSION=${{ steps.meta.outputs.version }}
+      - name: Prepare cache for next build
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
 
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
+  docker-debug-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Set up QEMU for multiple platforms
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: arm64,amd64
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache-debug
+          key: ${{ runner.os }}-buildx-debug-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-debug-
+      - name: Docker meta
+        id: meta-debug
+        uses: docker/metadata-action@v3
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/headscale
+            ghcr.io/${{ github.repository_owner }}/headscale
+          flavor: |
+            latest=false
+          tags: |
+            type=semver,pattern={{version}}-debug
+            type=semver,pattern={{major}}.{{minor}}-debug
+            type=semver,pattern={{major}}-debug
+            type=raw,value=latest-debug
+            type=sha,suffix=-debug
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Login to GHCR
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          context: .
+          file: Dockerfile.debug
+          tags: ${{ steps.meta-debug.outputs.tags }}
+          labels: ${{ steps.meta-debug.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=local,src=/tmp/.buildx-cache-debug
+          cache-to: type=local,dest=/tmp/.buildx-cache-debug-new
+          build-args: |
+            VERSION=${{ steps.meta-debug.outputs.version }}
+      - name: Prepare cache for next build
+        run: |
+          rm -rf /tmp/.buildx-cache-debug
+          mv /tmp/.buildx-cache-debug-new /tmp/.buildx-cache-debug
 
-      - name: Run goreleaser
-        run: nix develop --command -- goreleaser release --clean
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  docker-alpine-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Set up QEMU for multiple platforms
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: arm64,amd64
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache-alpine
+          key: ${{ runner.os }}-buildx-alpine-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-alpine-
+      - name: Docker meta
+        id: meta-alpine
+        uses: docker/metadata-action@v3
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/headscale
+            ghcr.io/${{ github.repository_owner }}/headscale
+          flavor: |
+            latest=false
+          tags: |
+            type=semver,pattern={{version}}-alpine
+            type=semver,pattern={{major}}.{{minor}}-alpine
+            type=semver,pattern={{major}}-alpine
+            type=raw,value=latest-alpine
+            type=sha,suffix=-alpine
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Login to GHCR
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          context: .
+          file: Dockerfile.alpine
+          tags: ${{ steps.meta-alpine.outputs.tags }}
+          labels: ${{ steps.meta-alpine.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=local,src=/tmp/.buildx-cache-alpine
+          cache-to: type=local,dest=/tmp/.buildx-cache-alpine-new
+          build-args: |
+            VERSION=${{ steps.meta-alpine.outputs.version }}
+      - name: Prepare cache for next build
+        run: |
+          rm -rf /tmp/.buildx-cache-alpine
+          mv /tmp/.buildx-cache-alpine-new /tmp/.buildx-cache-alpine

.github/workflows/renovatebot.yml

@@ -0,0 +1,27 @@
+---
+name: Renovate
+on:
+  schedule:
+    - cron: "* * 5,20 * *" # Every 5th and 20th of the month
+  workflow_dispatch:
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get token
+        id: get_token
+        uses: machine-learning-apps/actions-app-token@master
+        with:
+          APP_PEM: ${{ secrets.RENOVATEBOT_SECRET }}
+          APP_ID: ${{ secrets.RENOVATEBOT_APP_ID }}
+
+      - name: Checkout
+        uses: actions/checkout@v2.0.0
+
+      - name: Self-hosted Renovate
+        uses: renovatebot/github-action@v31.81.3
+        with:
+          configurationFile: .github/renovate.json
+          token: "x-access-token:${{ steps.get_token.outputs.app_token }}"
+        # env:
+        #  LOG_LEVEL: "debug"

.github/workflows/stale.yml

@@ -1,25 +0,0 @@
-name: Close inactive issues
-
-on:
-  schedule:
-    - cron: "30 1 * * *"
-
-jobs:
-  close-issues:
-    if: github.repository == 'juanfont/headscale'
-    runs-on: ubuntu-latest
-    permissions:
-      issues: write
-      pull-requests: write
-    steps:
-      - uses: actions/stale@v9
-        with:
-          days-before-issue-stale: 90
-          days-before-issue-close: 7
-          stale-issue-label: "stale"
-          stale-issue-message: "This issue is stale because it has been open for 90 days with no activity."
-          close-issue-message: "This issue was closed because it has been inactive for 14 days since being marked as stale."
-          days-before-pr-stale: -1
-          days-before-pr-close: -1
-          exempt-issue-labels: "no-stale-bot"
-          repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test-integration.yaml

@@ -1,168 +0,0 @@
-name: Integration Tests
-# To debug locally on a branch, and when needing secrets
-# change this to include `push` so the build is ran on
-# the main repository.
-on: [pull_request]
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  integration-test:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        test:
-          - TestACLHostsInNetMapTable
-          - TestACLAllowUser80Dst
-          - TestACLDenyAllPort80
-          - TestACLAllowUserDst
-          - TestACLAllowStarDst
-          - TestACLNamedHostsCanReachBySubnet
-          - TestACLNamedHostsCanReach
-          - TestACLDevice1CanAccessDevice2
-          - TestPolicyUpdateWhileRunningWithCLIInDatabase
-          - TestAuthKeyLogoutAndReloginSameUser
-          - TestAuthKeyLogoutAndReloginNewUser
-          - TestAuthKeyLogoutAndReloginSameUserExpiredKey
-          - TestOIDCAuthenticationPingAll
-          - TestOIDCExpireNodesBasedOnTokenExpiry
-          - TestOIDC024UserCreation
-          - TestOIDCAuthenticationWithPKCE
-          - TestOIDCReloginSameNodeNewUser
-          - TestAuthWebFlowAuthenticationPingAll
-          - TestAuthWebFlowLogoutAndRelogin
-          - TestUserCommand
-          - TestPreAuthKeyCommand
-          - TestPreAuthKeyCommandWithoutExpiry
-          - TestPreAuthKeyCommandReusableEphemeral
-          - TestPreAuthKeyCorrectUserLoggedInCommand
-          - TestApiKeyCommand
-          - TestNodeTagCommand
-          - TestNodeAdvertiseTagCommand
-          - TestNodeCommand
-          - TestNodeExpireCommand
-          - TestNodeRenameCommand
-          - TestNodeMoveCommand
-          - TestPolicyCommand
-          - TestPolicyBrokenConfigCommand
-          - TestDERPVerifyEndpoint
-          - TestResolveMagicDNS
-          - TestResolveMagicDNSExtraRecordsPath
-          - TestDERPServerScenario
-          - TestDERPServerWebsocketScenario
-          - TestPingAllByIP
-          - TestPingAllByIPPublicDERP
-          - TestEphemeral
-          - TestEphemeralInAlternateTimezone
-          - TestEphemeral2006DeletedTooQuickly
-          - TestPingAllByHostname
-          - TestTaildrop
-          - TestUpdateHostnameFromClient
-          - TestExpireNode
-          - TestNodeOnlineStatus
-          - TestPingAllByIPManyUpDown
-          - Test2118DeletingOnlineNodePanics
-          - TestEnablingRoutes
-          - TestHASubnetRouterFailover
-          - TestSubnetRouteACL
-          - TestEnablingExitRoutes
-          - TestSubnetRouterMultiNetwork
-          - TestSubnetRouterMultiNetworkExitNode
-          - TestAutoApproveMultiNetwork
-          - TestSubnetRouteACLFiltering
-          - TestHeadscale
-          - TestTailscaleNodesJoiningHeadcale
-          - TestSSHOneUserToAll
-          - TestSSHMultipleUsersAllToAll
-          - TestSSHNoSSHConfigured
-          - TestSSHIsBlockedInACL
-          - TestSSHUserOnlyIsolation
-        database: [postgres, sqlite]
-    env:
-      # Github does not allow us to access secrets in pull requests,
-      # so this env var is used to check if we have the secret or not.
-      # If we have the secrets, meaning we are running on push in a fork,
-      # there might be secrets available for more debugging.
-      # If TS_OAUTH_CLIENT_ID and TS_OAUTH_SECRET is set, then the job
-      # will join a debug tailscale network, set up SSH and a tmux session.
-      # The SSH will be configured to use the SSH key of the Github user
-      # that triggered the build.
-      HAS_TAILSCALE_SECRET: ${{ secrets.TS_OAUTH_CLIENT_ID }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 2
-      - name: Get changed files
-        id: changed-files
-        uses: dorny/paths-filter@v3
-        with:
-          filters: |
-            files:
-              - '*.nix'
-              - 'go.*'
-              - '**/*.go'
-              - 'integration_test/'
-              - 'config-example.yaml'
-      - name: Tailscale
-        if: ${{ env.HAS_TAILSCALE_SECRET }}
-        uses: tailscale/github-action@v2
-        with:
-          oauth-client-id: ${{ secrets.TS_OAUTH_CLIENT_ID }}
-          oauth-secret: ${{ secrets.TS_OAUTH_SECRET }}
-          tags: tag:gh
-      - name: Setup SSH server for Actor
-        if: ${{ env.HAS_TAILSCALE_SECRET }}
-        uses: alexellis/setup-sshd-actor@master
-      - uses: DeterminateSystems/nix-installer-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: satackey/action-docker-layer-caching@main
-        if: steps.changed-files.outputs.files == 'true'
-        continue-on-error: true
-      - name: Run Integration Test
-        uses: Wandalen/wretry.action@master
-        if: steps.changed-files.outputs.files == 'true'
-        env:
-          USE_POSTGRES: ${{ matrix.database == 'postgres' && '1' || '0' }}
-        with:
-          # Our integration tests are started like a thundering herd, often
-          # hitting limits of the various external repositories we depend on
-          # like docker hub. This will retry jobs every 5 min, 10 times,
-          # hopefully letting us avoid manual intervention and restarting jobs.
-          # One could of course argue that we should invest in trying to avoid
-          # this, but currently it seems like a larger investment to be cleverer
-          # about this.
-          # Some of the jobs might still require manual restart as they are really
-          # slow and this will cause them to eventually be killed by Github actions.
-          attempt_delay: 300000 # 5 min
-          attempt_limit: 10
-          command: |
-            nix develop --command -- docker run \
-              --tty --rm \
-              --volume ~/.cache/hs-integration-go:/go \
-              --name headscale-test-suite \
-              --volume $PWD:$PWD -w $PWD/integration \
-              --volume /var/run/docker.sock:/var/run/docker.sock \
-              --volume $PWD/control_logs:/tmp/control \
-              --env HEADSCALE_INTEGRATION_POSTGRES=${{env.USE_POSTGRES}} \
-              golang:1 \
-                go run gotest.tools/gotestsum@latest -- ./... \
-                  -failfast \
-                  -timeout 120m \
-                  -parallel 1 \
-                  -run "^${{ matrix.test }}$"
-      - uses: actions/upload-artifact@v4
-        if: always() && steps.changed-files.outputs.files == 'true'
-        with:
-          name: ${{ matrix.test }}-${{matrix.database}}-logs
-          path: "control_logs/*.log"
-      - uses: actions/upload-artifact@v4
-        if: always() && steps.changed-files.outputs.files == 'true'
-        with:
-          name: ${{ matrix.test }}-${{matrix.database}}-pprof
-          path: "control_logs/*.pprof.tar"
-      - name: Setup a blocking tmux session
-        if: ${{ env.HAS_TAILSCALE_SECRET }}
-        uses: alexellis/block-with-tmux-action@master

.github/workflows/test-integration.yml

@@ -0,0 +1,52 @@
+name: CI
+
+on: [pull_request]
+
+jobs:
+  integration-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Inspect builder
+        run: |
+          echo "Name:      ${{ steps.buildx.outputs.name }}"
+          echo "Endpoint:  ${{ steps.buildx.outputs.endpoint }}"
+          echo "Status:    ${{ steps.buildx.outputs.status }}"
+          echo "Flags:     ${{ steps.buildx.outputs.flags }}"
+          echo "Platforms: ${{ steps.buildx.outputs.platforms }}"
+
+      - name: check buildx version
+        run: docker buildx version
+        shell: bash
+
+      - name: Get changed files
+        id: changed-files
+        uses: tj-actions/changed-files@v14.1
+        with:
+          files: |
+            *.nix
+            go.*
+            **/*.go
+            integration_test/
+            config-example.yaml
+            Dockerfile*
+
+      - uses: cachix/install-nix-action@v16
+        if: steps.changed-files.outputs.any_changed == 'true'
+
+      - name: Run Integration tests
+        if: steps.changed-files.outputs.any_changed == 'true'
+        uses: nick-fields/retry@v2
+        with:
+          timeout_minutes: 240
+          max_attempts: 5
+          retry_on: error
+          command: nix develop --command -- make test_integration

.github/workflows/test.yml

@@ -1,43 +1,30 @@
-name: Tests
+name: CI
 
 on: [push, pull_request]
 
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
 jobs:
   test:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
         with:
           fetch-depth: 2
 
       - name: Get changed files
         id: changed-files
-        uses: dorny/paths-filter@v3
+        uses: tj-actions/changed-files@v14.1
         with:
-          filters: |
-            files:
-              - '*.nix'
-              - 'go.*'
-              - '**/*.go'
-              - 'integration_test/'
-              - 'config-example.yaml'
+          files: |
+            *.nix
+            go.*
+            **/*.go
+            integration_test/
+            config-example.yaml
 
-      - uses: DeterminateSystems/nix-installer-action@main
-        if: steps.changed-files.outputs.files == 'true'
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-        if: steps.changed-files.outputs.files == 'true'
+      - uses: cachix/install-nix-action@v16
+        if: steps.changed-files.outputs.any_changed == 'true'
 
       - name: Run tests
-        if: steps.changed-files.outputs.files == 'true'
-        env:
-          # As of 2025-01-06, these env vars was not automatically
-          # set anymore which breaks the initdb for postgres on
-          # some of the database migration tests.
-          LC_ALL: "en_US.UTF-8"
-          LC_CTYPE: "en_US.UTF-8"
-        run: nix develop --command -- gotestsum
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: nix develop --check

.github/workflows/update-flake.yml

@@ -1,19 +0,0 @@
-name: update-flake-lock
-on:
-  workflow_dispatch: # allows manual triggering
-  schedule:
-    - cron: "0 0 * * 0" # runs weekly on Sunday at 00:00
-
-jobs:
-  lockfile:
-    if: github.repository == 'juanfont/headscale'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@main
-      - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@main
-        with:
-          pr-title: "Update flake.lock"

.gitignore

@@ -1,7 +1,3 @@
-ignored/
-tailscale/
-.vscode/
-
 # Binaries for programs and plugins
 *.exe
 *.exe~
@@ -16,13 +12,11 @@ tailscale/
 *.out
 
 # Dependency directories (remove the comment below to include it)
-vendor/
+# vendor/
 
-dist/
 /headscale
 config.json
 config.yaml
-config*.yaml
 derp.yaml
 *.hujson
 *.key
@@ -32,17 +26,10 @@ derp.yaml
 # Exclude Jetbrains Editors
 .idea
 
-test_output/
-control_logs/
+test_output/ 
 
 # Nix build output
 result
 .direnv/
 
 integration_test/etc/config.dump.yaml
-
-# MkDocs
-.cache
-/site
-
-__debug_bin

.golangci.yaml

@@ -1,79 +1,60 @@
 ---
-version: "2"
+run:
+  timeout: 10m
+
+issues:
+  skip-dirs:
+    - gen
 linters:
-  default: all
+  enable-all: true
   disable:
-    - cyclop
-    - depguard
-    - dupl
-    - exhaustruct
-    - funlen
+    - exhaustivestruct
+    - revive
+    - lll
+    - interfacer
+    - scopelint
+    - maligned
+    - golint
+    - gofmt
     - gochecknoglobals
     - gochecknoinits
     - gocognit
-    - godox
-    - interfacebloat
-    - ireturn
-    - lll
-    - maintidx
-    - makezero
-    - musttag
-    - nestif
-    - nolintlint
-    - paralleltest
-    - revive
+    - funlen
+    - exhaustivestruct
     - tagliatelle
-    - testpackage
-    - wrapcheck
-    - wsl
-  settings:
-    gocritic:
-      disabled-checks:
-        - appendAssign
-        - ifElseChain
-    nlreturn:
-      block-size: 4
-    varnamelen:
-      ignore-names:
-        - err
-        - db
-        - id
-        - ip
-        - ok
-        - c
-        - tt
-        - tx
-        - rx
-        - sb
-        - wg
-        - pr
-        - p
-        - p2
-      ignore-type-assert-ok: true
-      ignore-map-index-ok: true
-  exclusions:
-    generated: lax
-    presets:
-      - comments
-      - common-false-positives
-      - legacy
-      - std-error-handling
-    paths:
-      - third_party$
-      - builtin$
-      - examples$
-      - gen
+    - godox
+    - ireturn
+    - execinquery
+    - exhaustruct
 
-formatters:
-  enable:
-    - gci
-    - gofmt
-    - gofumpt
-    - goimports
-  exclusions:
-    generated: lax
-    paths:
-      - third_party$
-      - builtin$
-      - examples$
-      - gen
+    # We should strive to enable these:
+    - wrapcheck
+    - dupl
+    - makezero
+    - maintidx
+
+    # We might want to enable this, but it might be a lot of work
+    - cyclop
+    - nestif
+    - wsl # might be incompatible with gofumpt
+    - testpackage
+    - paralleltest
+
+linters-settings:
+  varnamelen:
+    ignore-type-assert-ok: true
+    ignore-map-index-ok: true
+    ignore-names:
+      - err
+      - db
+      - id
+      - ip
+      - ok
+      - c
+      - tt
+
+  gocritic:
+    disabled-checks:
+      - appendAssign
+      # TODO(kradalby): Remove this
+      - ifElseChain

.goreleaser.yml

@@ -1,153 +1,78 @@
 ---
-version: 2
 before:
   hooks:
-    - go mod tidy -compat=1.24
-    - go mod vendor
+    - go mod tidy -compat=1.18
 
 release:
   prerelease: auto
 
 builds:
-  - id: headscale
-    main: ./cmd/headscale
+  - id: darwin-amd64
+    main: ./cmd/headscale/headscale.go
     mod_timestamp: "{{ .CommitTimestamp }}"
     env:
       - CGO_ENABLED=0
-    targets:
-      - darwin_amd64
-      - darwin_arm64
-      - freebsd_amd64
-      - linux_386
-      - linux_amd64
-      - linux_arm64
-      - linux_arm_5
-      - linux_arm_6
-      - linux_arm_7
+    goos:
+      - darwin
+    goarch:
+      - amd64
     flags:
       - -mod=readonly
     ldflags:
-      - -s -w
-      - -X github.com/juanfont/headscale/hscontrol/types.Version={{ .Version }}
-      - -X github.com/juanfont/headscale/hscontrol/types.GitCommitHash={{ .Commit }}
-    tags:
-      - ts2019
+      - -s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=v{{.Version}}
+
+  - id: darwin-arm64
+    main: ./cmd/headscale/headscale.go
+    mod_timestamp: "{{ .CommitTimestamp }}"
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - darwin
+    goarch:
+      - arm64
+    flags:
+      - -mod=readonly
+    ldflags:
+      - -s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=v{{.Version}}
+
+  - id: linux-amd64
+    mod_timestamp: "{{ .CommitTimestamp }}"
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+    goarch:
+      - amd64
+    main: ./cmd/headscale/headscale.go
+    ldflags:
+      - -s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=v{{.Version}}
+
+  - id: linux-arm64
+    mod_timestamp: "{{ .CommitTimestamp }}"
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+    goarch:
+      - arm64
+    main: ./cmd/headscale/headscale.go
+    ldflags:
+      - -s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=v{{.Version}}
 
 archives:
   - id: golang-cross
-    name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}{{ with .Mips }}_{{ . }}{{ end }}{{ if not (eq .Amd64 "v1") }}{{ .Amd64 }}{{ end }}'
-    formats:
-      - binary
-
-source:
-  enabled: true
-  name_template: "{{ .ProjectName }}_{{ .Version }}"
-  format: tar.gz
-  files:
-    - "vendor/"
-
-nfpms:
-  # Configure nFPM for .deb and .rpm releases
-  #
-  # See https://nfpm.goreleaser.com/configuration/
-  # and https://goreleaser.com/customization/nfpm/
-  #
-  # Useful tools for debugging .debs:
-  # List file contents: dpkg -c dist/headscale...deb
-  # Package metadata: dpkg --info dist/headscale....deb
-  #
-  - ids:
-      - headscale
-    package_name: headscale
-    priority: optional
-    vendor: headscale
-    maintainer: Kristoffer Dalby <kristoffer@dalby.cc>
-    homepage: https://github.com/juanfont/headscale
-    license: BSD
-    bindir: /usr/bin
-    formats:
-      - deb
-    contents:
-      - src: ./config-example.yaml
-        dst: /etc/headscale/config.yaml
-        type: config|noreplace
-        file_info:
-          mode: 0644
-      - src: ./docs/packaging/headscale.systemd.service
-        dst: /usr/lib/systemd/system/headscale.service
-      - dst: /var/lib/headscale
-        type: dir
-      - dst: /var/run/headscale
-        type: dir
-    scripts:
-      postinstall: ./docs/packaging/postinstall.sh
-      postremove: ./docs/packaging/postremove.sh
-
-kos:
-  - id: ghcr
-    repositories:
-      - ghcr.io/juanfont/headscale
-      - headscale/headscale
-
-    # bare tells KO to only use the repository
-    # for tagging and naming the container.
-    bare: true
-    base_image: gcr.io/distroless/base-debian12
-    build: headscale
-    main: ./cmd/headscale
-    env:
-      - CGO_ENABLED=0
-    platforms:
-      - linux/amd64
-      - linux/386
-      - linux/arm64
-      - linux/arm/v7
-    tags:
-      - "{{ if not .Prerelease }}latest{{ end }}"
-      - "{{ if not .Prerelease }}{{ .Major }}.{{ .Minor }}.{{ .Patch }}{{ end }}"
-      - "{{ if not .Prerelease }}{{ .Major }}.{{ .Minor }}{{ end }}"
-      - "{{ if not .Prerelease }}{{ .Major }}{{ end }}"
-      - "{{ if not .Prerelease }}v{{ .Major }}.{{ .Minor }}.{{ .Patch }}{{ end }}"
-      - "{{ if not .Prerelease }}v{{ .Major }}.{{ .Minor }}{{ end }}"
-      - "{{ if not .Prerelease }}v{{ .Major }}{{ end }}"
-      - "{{ if not .Prerelease }}stable{{ else }}unstable{{ end }}"
-      - "{{ .Tag }}"
-      - '{{ trimprefix .Tag "v" }}'
-      - "sha-{{ .ShortCommit }}"
-
-  - id: ghcr-debug
-    repositories:
-      - ghcr.io/juanfont/headscale
-      - headscale/headscale
-
-    bare: true
-    base_image: gcr.io/distroless/base-debian12:debug
-    build: headscale
-    main: ./cmd/headscale
-    env:
-      - CGO_ENABLED=0
-    platforms:
-      - linux/amd64
-      - linux/386
-      - linux/arm64
-      - linux/arm/v7
-    tags:
-      - "{{ if not .Prerelease }}latest-debug{{ end }}"
-      - "{{ if not .Prerelease }}{{ .Major }}.{{ .Minor }}.{{ .Patch }}-debug{{ end }}"
-      - "{{ if not .Prerelease }}{{ .Major }}.{{ .Minor }}-debug{{ end }}"
-      - "{{ if not .Prerelease }}{{ .Major }}-debug{{ end }}"
-      - "{{ if not .Prerelease }}v{{ .Major }}.{{ .Minor }}.{{ .Patch }}-debug{{ end }}"
-      - "{{ if not .Prerelease }}v{{ .Major }}.{{ .Minor }}-debug{{ end }}"
-      - "{{ if not .Prerelease }}v{{ .Major }}-debug{{ end }}"
-      - "{{ if not .Prerelease }}stable-debug{{ else }}unstable-debug{{ end }}"
-      - "{{ .Tag }}-debug"
-      - '{{ trimprefix .Tag "v" }}-debug'
-      - "sha-{{ .ShortCommit }}-debug"
+    builds:
+      - darwin-amd64
+      - darwin-arm64
+      - linux-amd64
+      - linux-arm64
+    name_template: "{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+    format: binary
 
 checksum:
   name_template: "checksums.txt"
 snapshot:
-  version_template: "{{ .Tag }}-next"
+  name_template: "{{ .Tag }}-next"
 changelog:
   sort: asc
   filters:

.prettierignore

@@ -1,4 +0,0 @@
-.github/workflows/test-integration-v2*
-docs/about/features.md
-docs/ref/configuration.md
-docs/ref/remote-cli.md

CODE_OF_CONDUCT.md

@@ -1,134 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-We as members, contributors, and leaders pledge to make participation
-in our community a harassment-free experience for everyone, regardless
-of age, body size, visible or invisible disability, ethnicity, sex
-characteristics, gender identity and expression, level of experience,
-education, socio-economic status, nationality, personal appearance,
-race, religion, or sexual identity and orientation.
-
-We pledge to act and interact in ways that contribute to an open,
-welcoming, diverse, inclusive, and healthy community.
-
-## Our Standards
-
-Examples of behavior that contributes to a positive environment for
-our community include:
-
-- Demonstrating empathy and kindness toward other people
-- Being respectful of differing opinions, viewpoints, and experiences
-- Giving and gracefully accepting constructive feedback
-- Accepting responsibility and apologizing to those affected by our
-  mistakes, and learning from the experience
-- Focusing on what is best not just for us as individuals, but for the
-  overall community
-
-Examples of unacceptable behavior include:
-
-- The use of sexualized language or imagery, and sexual attention or
-  advances of any kind
-- Trolling, insulting or derogatory comments, and personal or
-  political attacks
-- Public or private harassment
-- Publishing others' private information, such as a physical or email
-  address, without their explicit permission
-- Other conduct which could reasonably be considered inappropriate in
-  a professional setting
-
-## Enforcement Responsibilities
-
-Community leaders are responsible for clarifying and enforcing our
-standards of acceptable behavior and will take appropriate and fair
-corrective action in response to any behavior that they deem
-inappropriate, threatening, offensive, or harmful.
-
-Community leaders have the right and responsibility to remove, edit,
-or reject comments, commits, code, wiki edits, issues, and other
-contributions that are not aligned to this Code of Conduct, and will
-communicate reasons for moderation decisions when appropriate.
-
-## Scope
-
-This Code of Conduct applies within all community spaces, and also
-applies when an individual is officially representing the community in
-public spaces. Examples of representing our community include using an
-official e-mail address, posting via an official social media account,
-or acting as an appointed representative at an online or offline
-event.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior
-may be reported to the community leaders responsible for enforcement
-on our [Discord server](https://discord.gg/c84AZQhmpx). All complaints
-will be reviewed and investigated promptly and fairly.
-
-All community leaders are obligated to respect the privacy and
-security of the reporter of any incident.
-
-## Enforcement Guidelines
-
-Community leaders will follow these Community Impact Guidelines in
-determining the consequences for any action they deem in violation of
-this Code of Conduct:
-
-### 1. Correction
-
-**Community Impact**: Use of inappropriate language or other behavior
-deemed unprofessional or unwelcome in the community.
-
-**Consequence**: A private, written warning from community leaders,
-providing clarity around the nature of the violation and an
-explanation of why the behavior was inappropriate. A public apology
-may be requested.
-
-### 2. Warning
-
-**Community Impact**: A violation through a single incident or series
-of actions.
-
-**Consequence**: A warning with consequences for continued
-behavior. No interaction with the people involved, including
-unsolicited interaction with those enforcing the Code of Conduct, for
-a specified period of time. This includes avoiding interactions in
-community spaces as well as external channels like social
-media. Violating these terms may lead to a temporary or permanent ban.
-
-### 3. Temporary Ban
-
-**Community Impact**: A serious violation of community standards,
-including sustained inappropriate behavior.
-
-**Consequence**: A temporary ban from any sort of interaction or
-public communication with the community for a specified period of
-time. No public or private interaction with the people involved,
-including unsolicited interaction with those enforcing the Code of
-Conduct, is allowed during this period. Violating these terms may lead
-to a permanent ban.
-
-### 4. Permanent Ban
-
-**Community Impact**: Demonstrating a pattern of violation of
-community standards, including sustained inappropriate behavior,
-harassment of an individual, or aggression toward or disparagement of
-classes of individuals.
-
-**Consequence**: A permanent ban from any sort of public interaction
-within the community.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor
-Covenant][homepage], version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
-
-Community Impact Guidelines were inspired by [Mozilla's code of
-conduct enforcement ladder](https://github.com/mozilla/diversity).
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see the
-FAQ at https://www.contributor-covenant.org/faq. Translations are
-available at https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -1,34 +0,0 @@
-# Contributing
-
-Headscale is "Open Source, acknowledged contribution", this means that any contribution will have to be discussed with the maintainers before being added to the project.
-This model has been chosen to reduce the risk of burnout by limiting the maintenance overhead of reviewing and validating third-party code.
-
-## Why do we have this model?
-
-Headscale has a small maintainer team that tries to balance working on the project, fixing bugs and reviewing contributions.
-
-When we work on issues ourselves, we develop first hand knowledge of the code and it makes it possible for us to maintain and own the code as the project develops.
-
-Code contributions are seen as a positive thing. People enjoy and engage with our project, but it also comes with some challenges; we have to understand the code, we have to understand the feature, we might have to become familiar with external libraries or services and we think about security implications. All those steps are required during the reviewing process. After the code has been merged, the feature has to be maintained. Any changes reliant on external services must be updated and expanded accordingly.
-
-The review and day-1 maintenance adds a significant burden on the maintainers. Often we hope that the contributor will help out, but we found that most of the time, they disappear after their new feature was added.
-
-This means that when someone contributes, we are mostly happy about it, but we do have to run it through a series of checks to establish if we actually can maintain this feature.
-
-## What do we require?
-
-A general description is provided here and an explicit list is provided in our pull request template.
-
-All new features have to start out with a design document, which should be discussed on the issue tracker (not discord). It should include a use case for the feature, how it can be implemented, who will implement it and a plan for maintaining it.
-
-All features have to be end-to-end tested (integration tests) and have good unit test coverage to ensure that they work as expected. This will also ensure that the feature continues to work as expected over time. If a change cannot be tested, a strong case for why this is not possible needs to be presented.
-
-The contributor should help to maintain the feature over time. In case the feature is not maintained probably, the maintainers reserve themselves the right to remove features they redeem as unmaintainable. This should help to improve the quality of the software and keep it in a maintainable state.
-
-## Bug fixes
-
-Headscale is open to code contributions for bug fixes without discussion.
-
-## Documentation
-
-If you find mistakes in the documentation, please submit a fix to the documentation.

Dockerfile

@@ -0,0 +1,22 @@
+# Builder image
+FROM --platform=$BUILDPLATFORM docker.io/golang:1.18.0-bullseye AS build
+ARG VERSION=dev
+ENV GOPATH /go
+WORKDIR /go/src/headscale
+
+COPY go.mod go.sum /go/src/headscale/
+RUN go mod download
+
+COPY . .
+ARG TARGETOS TARGETARCH
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /go/bin/headscale -ldflags="-s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=$VERSION" -a ./cmd/headscale 
+RUN test -e /go/bin/headscale
+
+# Production image
+FROM gcr.io/distroless/base-debian11
+
+COPY --from=build /go/bin/headscale /bin/headscale
+ENV TZ UTC
+
+EXPOSE 8080/tcp
+CMD ["headscale"]

Dockerfile.alpine

@@ -0,0 +1,24 @@
+# Builder image
+FROM --platform=$BUILDPLATFORM docker.io/golang:1.18.0-alpine AS build
+ARG VERSION=dev
+ENV GOPATH /go
+WORKDIR /go/src/headscale
+
+COPY go.mod go.sum /go/src/headscale/
+RUN apk add gcc musl-dev
+RUN go mod download
+
+COPY . .
+
+ARG TARGETOS TARGETARCH
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /go/bin/headscale -ldflags="-s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=$VERSION" -a ./cmd/headscale 
+RUN test -e /go/bin/headscale
+
+# Production image
+FROM docker.io/alpine:latest
+
+COPY --from=build /go/bin/headscale /bin/headscale
+ENV TZ UTC
+
+EXPOSE 8080/tcp
+CMD ["headscale"]

Dockerfile.debug

@@ -0,0 +1,25 @@
+# Builder image
+FROM --platform=$BUILDPLATFORM docker.io/golang:1.18.0-bullseye AS build
+ARG VERSION=dev
+ENV GOPATH /go
+WORKDIR /go/src/headscale
+
+COPY go.mod go.sum /go/src/headscale/
+RUN go mod download
+
+COPY . .
+
+ARG TARGETOS TARGETARCH
+RUN CGO_ENABLED=0 GOOS=linux go install -ldflags="-s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=$VERSION" -a ./cmd/headscale
+RUN test -e /go/bin/headscale
+
+# Debug image
+FROM gcr.io/distroless/base-debian11:debug
+
+COPY --from=build /go/bin/headscale /bin/headscale
+ENV TZ UTC
+
+# Need to reset the entrypoint or everything will run as a busybox script
+ENTRYPOINT []
+EXPOSE 8080/tcp
+CMD ["headscale"]

Dockerfile.derper

@@ -1,19 +0,0 @@
-# For testing purposes only
-
-FROM golang:alpine AS build-env
-
-WORKDIR /go/src
-
-RUN apk add --no-cache git
-ARG VERSION_BRANCH=main
-RUN git clone https://github.com/tailscale/tailscale.git --branch=$VERSION_BRANCH --depth=1
-WORKDIR /go/src/tailscale
-
-ARG TARGETARCH
-RUN GOARCH=$TARGETARCH go install -v ./cmd/derper
-
-FROM alpine:3.18
-RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables curl
-
-COPY --from=build-env /go/bin/* /usr/local/bin/
-ENTRYPOINT [ "/usr/local/bin/derper" ]

Dockerfile.integration

@@ -1,26 +0,0 @@
-# This Dockerfile and the images produced are for testing headscale,
-# and are in no way endorsed by Headscale's maintainers as an
-# official nor supported release or distribution.
-
-FROM docker.io/golang:1.24-bookworm
-ARG VERSION=dev
-ENV GOPATH /go
-WORKDIR /go/src/headscale
-
-RUN apt-get update \
-  && apt-get install --no-install-recommends --yes less jq sqlite3 dnsutils \
-  && rm -rf /var/lib/apt/lists/* \
-  && apt-get clean
-RUN mkdir -p /var/run/headscale
-
-COPY go.mod go.sum /go/src/headscale/
-RUN go mod download
-
-COPY . .
-
-RUN CGO_ENABLED=0 GOOS=linux go install -a ./cmd/headscale && test -e /go/bin/headscale
-
-# Need to reset the entrypoint or everything will run as a busybox script
-ENTRYPOINT []
-EXPOSE 8080/tcp
-CMD ["headscale"]

Dockerfile.tailscale

@@ -0,0 +1,17 @@
+FROM ubuntu:latest
+
+ARG TAILSCALE_VERSION=*
+ARG TAILSCALE_CHANNEL=stable
+
+RUN apt-get update \
+    && apt-get install -y gnupg curl \
+    && curl -fsSL https://pkgs.tailscale.com/${TAILSCALE_CHANNEL}/ubuntu/focal.gpg | apt-key add - \
+    && curl -fsSL https://pkgs.tailscale.com/${TAILSCALE_CHANNEL}/ubuntu/focal.list | tee /etc/apt/sources.list.d/tailscale.list \
+    && apt-get update \
+    && apt-get install -y ca-certificates tailscale=${TAILSCALE_VERSION} dnsutils \
+    && rm -rf /var/lib/apt/lists/*
+
+ADD integration_test/etc_embedded_derp/tls/server.crt /usr/local/share/ca-certificates/
+RUN chmod 644 /usr/local/share/ca-certificates/server.crt 
+
+RUN update-ca-certificates

Dockerfile.tailscale-HEAD

@@ -1,45 +1,21 @@
-# Copyright (c) Tailscale Inc & AUTHORS
-# SPDX-License-Identifier: BSD-3-Clause
+FROM golang:latest
 
-# This Dockerfile is more or less lifted from tailscale/tailscale
-# to ensure a similar build process when testing the HEAD of tailscale.
+RUN apt-get update \
+    && apt-get install -y ca-certificates dnsutils git iptables \
+    && rm -rf /var/lib/apt/lists/*
 
-FROM golang:1.24-alpine AS build-env
 
-WORKDIR /go/src
-
-RUN apk add --no-cache git
-
-# Replace `RUN git...` with `COPY` and a local checked out version of Tailscale in `./tailscale`
-# to test specific commits of the Tailscale client. This is useful when trying to find out why
-# something specific broke between two versions of Tailscale with for example `git bisect`.
-# COPY ./tailscale .
 RUN git clone https://github.com/tailscale/tailscale.git
 
-WORKDIR /go/src/tailscale
+WORKDIR tailscale
 
+RUN sh build_dist.sh tailscale.com/cmd/tailscale
+RUN sh build_dist.sh tailscale.com/cmd/tailscaled
 
-# see build_docker.sh
-ARG VERSION_LONG=""
-ENV VERSION_LONG=$VERSION_LONG
-ARG VERSION_SHORT=""
-ENV VERSION_SHORT=$VERSION_SHORT
-ARG VERSION_GIT_HASH=""
-ENV VERSION_GIT_HASH=$VERSION_GIT_HASH
-ARG TARGETARCH
+RUN cp tailscale /usr/local/bin/
+RUN cp tailscaled /usr/local/bin/
 
-ARG BUILD_TAGS=""
+ADD integration_test/etc_embedded_derp/tls/server.crt /usr/local/share/ca-certificates/
+RUN chmod 644 /usr/local/share/ca-certificates/server.crt 
 
-RUN GOARCH=$TARGETARCH go install -tags="${BUILD_TAGS}" -ldflags="\
-      -X tailscale.com/version.longStamp=$VERSION_LONG \
-      -X tailscale.com/version.shortStamp=$VERSION_SHORT \
-      -X tailscale.com/version.gitCommitStamp=$VERSION_GIT_HASH" \
-      -v ./cmd/tailscale ./cmd/tailscaled ./cmd/containerboot
-
-FROM alpine:3.18
-RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables curl
-
-COPY --from=build-env /go/bin/* /usr/local/bin/
-# For compat with the previous run.sh, although ideally you should be
-# using build_docker.sh which sets an entrypoint for the image.
-RUN mkdir /tailscale && ln -s /usr/local/bin/containerboot /tailscale/run.sh
+RUN update-ca-certificates

Makefile

@@ -17,41 +17,35 @@ PROTO_SOURCES = $(call rwildcard,,*.proto)
 
 
 build:
-	nix build
+	GOOS=$(GOOS) CGO_ENABLED=0 go build -trimpath $(pieflags) -mod=readonly -ldflags "-s -w -X github.com/juanfont/headscale/cmd/headscale/cli.Version=$(version)" cmd/headscale/headscale.go
 
 dev: lint test build
 
 test:
-	gotestsum -- -short -race -coverprofile=coverage.out ./...
+	@go test -coverprofile=coverage.out ./...
 
 test_integration:
-	docker run \
-		-t --rm \
-		-v ~/.cache/hs-integration-go:/go \
-		--name headscale-test-suite \
-		-v $$PWD:$$PWD -w $$PWD/integration \
-		-v /var/run/docker.sock:/var/run/docker.sock \
-		-v $$PWD/control_logs:/tmp/control \
-		golang:1 \
-		go run gotest.tools/gotestsum@latest -- -race -failfast ./... -timeout 120m -parallel 8
+	go test -failfast -tags integration -timeout 30m -count=1 ./...
+
+test_integration_cli:
+	go test -tags integration -v integration_cli_test.go integration_common_test.go
+
+test_integration_derp:
+	go test -tags integration -v integration_embedded_derp_test.go integration_common_test.go
+
+coverprofile_func:
+	go tool cover -func=coverage.out
+
+coverprofile_html:
+	go tool cover -html=coverage.out
 
 lint:
 	golangci-lint run --fix --timeout 10m
 
-fmt: fmt-go fmt-prettier fmt-proto
-
-fmt-prettier:
+fmt:
 	prettier --write '**/**.{ts,js,md,yaml,yml,sass,css,scss,html}'
-	prettier --write --print-width 80 --prose-wrap always CHANGELOG.md
-
-fmt-go:
-	# TODO(kradalby): Reeval if we want to use 88 in the future.
-	# golines --max-len=88 --base-formatter=gofumpt -w $(GO_SOURCES)
-	gofumpt -l -w .
-	golangci-lint run --fix
-
-fmt-proto:
-	clang-format -i $(PROTO_SOURCES)
+	golines --max-len=88 --base-formatter=gofumpt -w $(GO_SOURCES)
+	clang-format -style="{BasedOnStyle: Google, IndentWidth: 4, AlignConsecutiveDeclarations: true, AlignConsecutiveAssignments: true, ColumnLimit: 0}" -i $(PROTO_SOURCES)
 
 proto-lint:
 	cd proto/ && go run github.com/bufbuild/buf/cmd/buf lint
@@ -61,4 +55,11 @@ compress: build
 
 generate:
 	rm -rf gen
-	buf generate proto
+	go run github.com/bufbuild/buf/cmd/buf generate proto
+
+install-protobuf-plugins:
+	go install \
+		github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway \
+		github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2 \
+		google.golang.org/protobuf/cmd/protoc-gen-go \
+		google.golang.org/grpc/cmd/protoc-gen-go-grpc

README.md

@@ -1,18 +1,14 @@
-![headscale logo](./docs/logo/headscale3_header_stacked_left.png)
+# headscale
 
 ![ci](https://github.com/juanfont/headscale/actions/workflows/test.yml/badge.svg)
 
 An open source, self-hosted implementation of the Tailscale control server.
 
-Join our [Discord server](https://discord.gg/c84AZQhmpx) for a chat.
+Join our [Discord](https://discord.gg/c84AZQhmpx) server for a chat.
 
 **Note:** Always select the same GitHub tag as the released version you use
-to ensure you have the correct example configuration. The `main` branch might
-contain unreleased changes. The documentation is available for stable and
-development versions:
-
-* [Documentation for the stable version](https://headscale.net/stable/)
-* [Documentation for the development version](https://headscale.net/development/)
+to ensure you have the correct example configuration and documentation.
+The `main` branch might contain unreleased changes.
 
 ## What is Tailscale
 
@@ -36,59 +32,71 @@ organisation.
 
 ## Design goal
 
-Headscale aims to implement a self-hosted, open source alternative to the
-[Tailscale](https://tailscale.com/) control server. Headscale's goal is to
-provide self-hosters and hobbyists with an open-source server they can use for
-their projects and labs. It implements a narrow scope, a _single_ Tailscale
-network (tailnet), suitable for a personal use, or a small open-source
-organisation.
+`headscale` aims to implement a self-hosted, open source alternative to the Tailscale
+control server. `headscale` has a narrower scope and an instance of `headscale`
+implements a _single_ Tailnet, which is typically what a single organisation, or
+home/personal setup would use.
 
-## Supporting Headscale
+`headscale` uses terms that maps to Tailscale's control server, consult the
+[glossary](./docs/glossary.md) for explainations.
+
+## Support
 
 If you like `headscale` and find it useful, there is a sponsorship and donation
 buttons available in the repo.
 
+If you would like to sponsor features, bugs or prioritisation, reach out to
+one of the maintainers.
+
 ## Features
 
-Please see ["Features" in the documentation](https://headscale.net/stable/about/features/).
+- Full "base" support of Tailscale's features
+- Configurable DNS
+  - [Split DNS](https://tailscale.com/kb/1054/dns/#using-dns-settings-in-the-admin-console)
+- Node registration
+  - Single-Sign-On (via Open ID Connect)
+  - Pre authenticated key
+- Taildrop (File Sharing)
+- [Access control lists](https://tailscale.com/kb/1018/acls/)
+- [MagicDNS](https://tailscale.com/kb/1081/magicdns)
+- Support for multiple IP ranges in the tailnet
+- Dual stack (IPv4 and IPv6)
+- Routing advertising (including exit nodes)
+- Ephemeral nodes
+- Embedded [DERP server](https://tailscale.com/blog/how-tailscale-works/#encrypted-tcp-relays-derp)
 
 ## Client OS support
 
-Please see ["Client and operating system support" in the documentation](https://headscale.net/stable/about/clients/).
+| OS      | Supports headscale                                                                                                |
+| ------- | ----------------------------------------------------------------------------------------------------------------- |
+| Linux   | Yes                                                                                                               |
+| OpenBSD | Yes                                                                                                               |
+| FreeBSD | Yes                                                                                                               |
+| macOS   | Yes (see `/apple` on your headscale for more information)                                                         |
+| Windows | Yes [docs](./docs/windows-client.md)                                                                              |
+| Android | [You need to compile the client yourself](https://github.com/juanfont/headscale/issues/58#issuecomment-885255270) |
+| iOS     | Not yet                                                                                                           |
 
 ## Running headscale
 
-**Please note that we do not support nor encourage the use of reverse proxies
-and container to run Headscale.**
-
-Please have a look at the [`documentation`](https://headscale.net/stable/).
-
-## Talks
-
-- Fosdem 2023 (video): [Headscale: How we are using integration testing to reimplement Tailscale](https://fosdem.org/2023/schedule/event/goheadscale/)
-  - presented by Juan Font Alonso and Kristoffer Dalby
+Please have a look at the documentation under [`docs/`](docs/).
 
 ## Disclaimer
 
-This project is not associated with Tailscale Inc.
-
-However, one of the active maintainers for Headscale [is employed by Tailscale](https://tailscale.com/blog/opensource) and he is allowed to spend work hours contributing to the project. Contributions from this maintainer are reviewed by other maintainers.
-
-The maintainers work together on setting the direction for the project. The underlying principle is to serve the community of self-hosters, enthusiasts and hobbyists - while having a sustainable project.
+1. We have nothing to do with Tailscale, or Tailscale Inc.
+2. The purpose of Headscale is maintaining a working, self-hosted Tailscale control panel.
 
 ## Contributing
 
-Please read the [CONTRIBUTING.md](./CONTRIBUTING.md) file.
-
-### Requirements
-
-To contribute to headscale you would need the latest version of [Go](https://golang.org)
-and [Buf](https://buf.build) (Protobuf generator).
+To contribute to headscale you would need the lastest version of [Go](https://golang.org)
+and [Buf](https://buf.build)(Protobuf generator).
 
 We recommend using [Nix](https://nixos.org/) to setup a development environment. This can
 be done with `nix develop`, which will install the tools and give you a shell.
 This guarantees that you will have the same dev env as `headscale` maintainers.
 
+PRs and suggestions are welcome.
+
 ### Code style
 
 To ensure we have some consistency with a growing number of contributions,
@@ -150,8 +158,482 @@ make build
 
 ## Contributors
 
-<a href="https://github.com/juanfont/headscale/graphs/contributors">
-  <img src="https://contrib.rocks/image?repo=juanfont/headscale" />
-</a>
-
-Made with [contrib.rocks](https://contrib.rocks).
+<table>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/kradalby>
+            <img src=https://avatars.githubusercontent.com/u/98431?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Kristoffer Dalby/>
+            <br />
+            <sub style="font-size:14px"><b>Kristoffer Dalby</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/juanfont>
+            <img src=https://avatars.githubusercontent.com/u/181059?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Juan Font/>
+            <br />
+            <sub style="font-size:14px"><b>Juan Font</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/restanrm>
+            <img src=https://avatars.githubusercontent.com/u/4344371?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Adrien Raffin-Caboisse/>
+            <br />
+            <sub style="font-size:14px"><b>Adrien Raffin-Caboisse</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/cure>
+            <img src=https://avatars.githubusercontent.com/u/149135?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Ward Vandewege/>
+            <br />
+            <sub style="font-size:14px"><b>Ward Vandewege</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/huskyii>
+            <img src=https://avatars.githubusercontent.com/u/5499746?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Jiang Zhu/>
+            <br />
+            <sub style="font-size:14px"><b>Jiang Zhu</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/reynico>
+            <img src=https://avatars.githubusercontent.com/u/715768?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Nico/>
+            <br />
+            <sub style="font-size:14px"><b>Nico</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/e-zk>
+            <img src=https://avatars.githubusercontent.com/u/58356365?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=e-zk/>
+            <br />
+            <sub style="font-size:14px"><b>e-zk</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/arch4ngel>
+            <img src=https://avatars.githubusercontent.com/u/11574161?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Justin Angel/>
+            <br />
+            <sub style="font-size:14px"><b>Justin Angel</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/ItalyPaleAle>
+            <img src=https://avatars.githubusercontent.com/u/43508?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Alessandro (Ale) Segala/>
+            <br />
+            <sub style="font-size:14px"><b>Alessandro (Ale) Segala</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/unreality>
+            <img src=https://avatars.githubusercontent.com/u/352522?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=unreality/>
+            <br />
+            <sub style="font-size:14px"><b>unreality</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/mpldr>
+            <img src=https://avatars.githubusercontent.com/u/33086936?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Moritz Poldrack/>
+            <br />
+            <sub style="font-size:14px"><b>Moritz Poldrack</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/ohdearaugustin>
+            <img src=https://avatars.githubusercontent.com/u/14001491?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=ohdearaugustin/>
+            <br />
+            <sub style="font-size:14px"><b>ohdearaugustin</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/Niek>
+            <img src=https://avatars.githubusercontent.com/u/213140?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Niek van der Maas/>
+            <br />
+            <sub style="font-size:14px"><b>Niek van der Maas</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/negbie>
+            <img src=https://avatars.githubusercontent.com/u/20154956?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Eugen Biegler/>
+            <br />
+            <sub style="font-size:14px"><b>Eugen Biegler</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/qbit>
+            <img src=https://avatars.githubusercontent.com/u/68368?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Aaron Bieber/>
+            <br />
+            <sub style="font-size:14px"><b>Aaron Bieber</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/iSchluff>
+            <img src=https://avatars.githubusercontent.com/u/1429641?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Anton Schubert/>
+            <br />
+            <sub style="font-size:14px"><b>Anton Schubert</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/fdelucchijr>
+            <img src=https://avatars.githubusercontent.com/u/69133647?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Fernando De Lucchi/>
+            <br />
+            <sub style="font-size:14px"><b>Fernando De Lucchi</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/GrigoriyMikhalkin>
+            <img src=https://avatars.githubusercontent.com/u/3637857?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=GrigoriyMikhalkin/>
+            <br />
+            <sub style="font-size:14px"><b>GrigoriyMikhalkin</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/hdhoang>
+            <img src=https://avatars.githubusercontent.com/u/12537?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Hoàng Đức Hiếu/>
+            <br />
+            <sub style="font-size:14px"><b>Hoàng Đức Hiếu</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/bravechamp>
+            <img src=https://avatars.githubusercontent.com/u/48980452?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=bravechamp/>
+            <br />
+            <sub style="font-size:14px"><b>bravechamp</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/deonthomasgy>
+            <img src=https://avatars.githubusercontent.com/u/150036?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Deon Thomas/>
+            <br />
+            <sub style="font-size:14px"><b>Deon Thomas</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/ChibangLW>
+            <img src=https://avatars.githubusercontent.com/u/22293464?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=ChibangLW/>
+            <br />
+            <sub style="font-size:14px"><b>ChibangLW</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/mevansam>
+            <img src=https://avatars.githubusercontent.com/u/403630?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Mevan Samaratunga/>
+            <br />
+            <sub style="font-size:14px"><b>Mevan Samaratunga</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/dragetd>
+            <img src=https://avatars.githubusercontent.com/u/3639577?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Michael G./>
+            <br />
+            <sub style="font-size:14px"><b>Michael G.</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/ptman>
+            <img src=https://avatars.githubusercontent.com/u/24669?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Paul Tötterman/>
+            <br />
+            <sub style="font-size:14px"><b>Paul Tötterman</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/samson4649>
+            <img src=https://avatars.githubusercontent.com/u/12725953?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Samuel Lock/>
+            <br />
+            <sub style="font-size:14px"><b>Samuel Lock</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/majst01>
+            <img src=https://avatars.githubusercontent.com/u/410110?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Stefan Majer/>
+            <br />
+            <sub style="font-size:14px"><b>Stefan Majer</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/artemklevtsov>
+            <img src=https://avatars.githubusercontent.com/u/603798?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Artem Klevtsov/>
+            <br />
+            <sub style="font-size:14px"><b>Artem Klevtsov</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/cmars>
+            <img src=https://avatars.githubusercontent.com/u/23741?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Casey Marshall/>
+            <br />
+            <sub style="font-size:14px"><b>Casey Marshall</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/pvinis>
+            <img src=https://avatars.githubusercontent.com/u/100233?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Pavlos Vinieratos/>
+            <br />
+            <sub style="font-size:14px"><b>Pavlos Vinieratos</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/SilverBut>
+            <img src=https://avatars.githubusercontent.com/u/6560655?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Silver Bullet/>
+            <br />
+            <sub style="font-size:14px"><b>Silver Bullet</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/lachy2849>
+            <img src=https://avatars.githubusercontent.com/u/98844035?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=lachy2849/>
+            <br />
+            <sub style="font-size:14px"><b>lachy2849</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/t56k>
+            <img src=https://avatars.githubusercontent.com/u/12165422?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=thomas/>
+            <br />
+            <sub style="font-size:14px"><b>thomas</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/aberoham>
+            <img src=https://avatars.githubusercontent.com/u/586805?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Abraham Ingersoll/>
+            <br />
+            <sub style="font-size:14px"><b>Abraham Ingersoll</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/apognu>
+            <img src=https://avatars.githubusercontent.com/u/3017182?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Antoine POPINEAU/>
+            <br />
+            <sub style="font-size:14px"><b>Antoine POPINEAU</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/aofei>
+            <img src=https://avatars.githubusercontent.com/u/5037285?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Aofei Sheng/>
+            <br />
+            <sub style="font-size:14px"><b>Aofei Sheng</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/awoimbee>
+            <img src=https://avatars.githubusercontent.com/u/22431493?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Arthur Woimbée/>
+            <br />
+            <sub style="font-size:14px"><b>Arthur Woimbée</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/stensonb>
+            <img src=https://avatars.githubusercontent.com/u/933389?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Bryan Stenson/>
+            <br />
+            <sub style="font-size:14px"><b>Bryan Stenson</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/yangchuansheng>
+            <img src=https://avatars.githubusercontent.com/u/15308462?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt= Carson Yang/>
+            <br />
+            <sub style="font-size:14px"><b> Carson Yang</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/kundel>
+            <img src=https://avatars.githubusercontent.com/u/10158899?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=kundel/>
+            <br />
+            <sub style="font-size:14px"><b>kundel</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/fkr>
+            <img src=https://avatars.githubusercontent.com/u/51063?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Felix Kronlage-Dammers/>
+            <br />
+            <sub style="font-size:14px"><b>Felix Kronlage-Dammers</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/felixonmars>
+            <img src=https://avatars.githubusercontent.com/u/1006477?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Felix Yan/>
+            <br />
+            <sub style="font-size:14px"><b>Felix Yan</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/JJGadgets>
+            <img src=https://avatars.githubusercontent.com/u/5709019?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=JJGadgets/>
+            <br />
+            <sub style="font-size:14px"><b>JJGadgets</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/madjam002>
+            <img src=https://avatars.githubusercontent.com/u/679137?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Jamie Greeff/>
+            <br />
+            <sub style="font-size:14px"><b>Jamie Greeff</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/jimt>
+            <img src=https://avatars.githubusercontent.com/u/180326?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Jim Tittsler/>
+            <br />
+            <sub style="font-size:14px"><b>Jim Tittsler</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/piec>
+            <img src=https://avatars.githubusercontent.com/u/781471?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Pierre Carru/>
+            <br />
+            <sub style="font-size:14px"><b>Pierre Carru</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/rcursaru>
+            <img src=https://avatars.githubusercontent.com/u/16259641?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=rcursaru/>
+            <br />
+            <sub style="font-size:14px"><b>rcursaru</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/renovate-bot>
+            <img src=https://avatars.githubusercontent.com/u/25180681?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=WhiteSource Renovate/>
+            <br />
+            <sub style="font-size:14px"><b>WhiteSource Renovate</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/ryanfowler>
+            <img src=https://avatars.githubusercontent.com/u/2668821?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Ryan Fowler/>
+            <br />
+            <sub style="font-size:14px"><b>Ryan Fowler</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/shaananc>
+            <img src=https://avatars.githubusercontent.com/u/2287839?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Shaanan Cohney/>
+            <br />
+            <sub style="font-size:14px"><b>Shaanan Cohney</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/m-tanner-dev0>
+            <img src=https://avatars.githubusercontent.com/u/97977342?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Tanner/>
+            <br />
+            <sub style="font-size:14px"><b>Tanner</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/Teteros>
+            <img src=https://avatars.githubusercontent.com/u/5067989?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Teteros/>
+            <br />
+            <sub style="font-size:14px"><b>Teteros</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/gitter-badger>
+            <img src=https://avatars.githubusercontent.com/u/8518239?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=The Gitter Badger/>
+            <br />
+            <sub style="font-size:14px"><b>The Gitter Badger</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/tianon>
+            <img src=https://avatars.githubusercontent.com/u/161631?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Tianon Gravi/>
+            <br />
+            <sub style="font-size:14px"><b>Tianon Gravi</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/woudsma>
+            <img src=https://avatars.githubusercontent.com/u/6162978?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Tjerk Woudsma/>
+            <br />
+            <sub style="font-size:14px"><b>Tjerk Woudsma</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/y0ngb1n>
+            <img src=https://avatars.githubusercontent.com/u/25719408?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Yang Bin/>
+            <br />
+            <sub style="font-size:14px"><b>Yang Bin</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/zekker6>
+            <img src=https://avatars.githubusercontent.com/u/1367798?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Zakhar Bessarab/>
+            <br />
+            <sub style="font-size:14px"><b>Zakhar Bessarab</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/Bpazy>
+            <img src=https://avatars.githubusercontent.com/u/9838749?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Ziyuan Han/>
+            <br />
+            <sub style="font-size:14px"><b>Ziyuan Han</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/derelm>
+            <img src=https://avatars.githubusercontent.com/u/465155?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=derelm/>
+            <br />
+            <sub style="font-size:14px"><b>derelm</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/nning>
+            <img src=https://avatars.githubusercontent.com/u/557430?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=henning mueller/>
+            <br />
+            <sub style="font-size:14px"><b>henning mueller</b></sub>
+        </a>
+    </td>
+</tr>
+<tr>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/ignoramous>
+            <img src=https://avatars.githubusercontent.com/u/852289?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=ignoramous/>
+            <br />
+            <sub style="font-size:14px"><b>ignoramous</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/lion24>
+            <img src=https://avatars.githubusercontent.com/u/1382102?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=lion24/>
+            <br />
+            <sub style="font-size:14px"><b>lion24</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/pernila>
+            <img src=https://avatars.githubusercontent.com/u/12460060?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=pernila/>
+            <br />
+            <sub style="font-size:14px"><b>pernila</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/Wakeful-Cloud>
+            <img src=https://avatars.githubusercontent.com/u/38930607?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=Wakeful-Cloud/>
+            <br />
+            <sub style="font-size:14px"><b>Wakeful-Cloud</b></sub>
+        </a>
+    </td>
+    <td align="center" style="word-wrap: break-word; width: 150.0; height: 150.0">
+        <a href=https://github.com/xpzouying>
+            <img src=https://avatars.githubusercontent.com/u/3946563?v=4 width="100;"  style="border-radius:50%;align-items:center;justify-content:center;overflow:hidden;padding-top:10px" alt=zy/>
+            <br />
+            <sub style="font-size:14px"><b>zy</b></sub>
+        </a>
+    </td>
+</tr>
+</table>

acls.go

@@ -0,0 +1,563 @@
+package headscale
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/rs/zerolog/log"
+	"github.com/tailscale/hujson"
+	"gopkg.in/yaml.v3"
+	"inet.af/netaddr"
+	"tailscale.com/tailcfg"
+)
+
+const (
+	errEmptyPolicy       = Error("empty policy")
+	errInvalidAction     = Error("invalid action")
+	errInvalidGroup      = Error("invalid group")
+	errInvalidTag        = Error("invalid tag")
+	errInvalidPortFormat = Error("invalid port format")
+	errWildcardIsNeeded  = Error("wildcard as port is required for the protocol")
+)
+
+const (
+	Base8              = 8
+	Base10             = 10
+	BitSize16          = 16
+	BitSize32          = 32
+	BitSize64          = 64
+	portRangeBegin     = 0
+	portRangeEnd       = 65535
+	expectedTokenItems = 2
+)
+
+// For some reason golang.org/x/net/internal/iana is an internal package.
+const (
+	protocolICMP     = 1   // Internet Control Message
+	protocolIGMP     = 2   // Internet Group Management
+	protocolIPv4     = 4   // IPv4 encapsulation
+	protocolTCP      = 6   // Transmission Control
+	protocolEGP      = 8   // Exterior Gateway Protocol
+	protocolIGP      = 9   // any private interior gateway (used by Cisco for their IGRP)
+	protocolUDP      = 17  // User Datagram
+	protocolGRE      = 47  // Generic Routing Encapsulation
+	protocolESP      = 50  // Encap Security Payload
+	protocolAH       = 51  // Authentication Header
+	protocolIPv6ICMP = 58  // ICMP for IPv6
+	protocolSCTP     = 132 // Stream Control Transmission Protocol
+	ProtocolFC       = 133 // Fibre Channel
+)
+
+// LoadACLPolicy loads the ACL policy from the specify path, and generates the ACL rules.
+func (h *Headscale) LoadACLPolicy(path string) error {
+	log.Debug().
+		Str("func", "LoadACLPolicy").
+		Str("path", path).
+		Msg("Loading ACL policy from path")
+
+	policyFile, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer policyFile.Close()
+
+	var policy ACLPolicy
+	policyBytes, err := io.ReadAll(policyFile)
+	if err != nil {
+		return err
+	}
+
+	switch filepath.Ext(path) {
+	case ".yml", ".yaml":
+		log.Debug().
+			Str("path", path).
+			Bytes("file", policyBytes).
+			Msg("Loading ACLs from YAML")
+
+		err := yaml.Unmarshal(policyBytes, &policy)
+		if err != nil {
+			return err
+		}
+
+		log.Trace().
+			Interface("policy", policy).
+			Msg("Loaded policy from YAML")
+
+	default:
+		ast, err := hujson.Parse(policyBytes)
+		if err != nil {
+			return err
+		}
+
+		ast.Standardize()
+		policyBytes = ast.Pack()
+		err = json.Unmarshal(policyBytes, &policy)
+		if err != nil {
+			return err
+		}
+	}
+
+	if policy.IsZero() {
+		return errEmptyPolicy
+	}
+
+	h.aclPolicy = &policy
+
+	return h.UpdateACLRules()
+}
+
+func (h *Headscale) UpdateACLRules() error {
+	rules, err := h.generateACLRules()
+	if err != nil {
+		return err
+	}
+	log.Trace().Interface("ACL", rules).Msg("ACL rules generated")
+	h.aclRules = rules
+
+	return nil
+}
+
+func (h *Headscale) generateACLRules() ([]tailcfg.FilterRule, error) {
+	rules := []tailcfg.FilterRule{}
+
+	if h.aclPolicy == nil {
+		return nil, errEmptyPolicy
+	}
+
+	machines, err := h.ListMachines()
+	if err != nil {
+		return nil, err
+	}
+
+	for index, acl := range h.aclPolicy.ACLs {
+		if acl.Action != "accept" {
+			return nil, errInvalidAction
+		}
+
+		srcIPs := []string{}
+		for innerIndex, src := range acl.Sources {
+			srcs, err := h.generateACLPolicySrcIP(machines, *h.aclPolicy, src)
+			if err != nil {
+				log.Error().
+					Msgf("Error parsing ACL %d, Source %d", index, innerIndex)
+
+				return nil, err
+			}
+			srcIPs = append(srcIPs, srcs...)
+		}
+
+		protocols, needsWildcard, err := parseProtocol(acl.Protocol)
+		if err != nil {
+			log.Error().
+				Msgf("Error parsing ACL %d. protocol unknown %s", index, acl.Protocol)
+
+			return nil, err
+		}
+
+		destPorts := []tailcfg.NetPortRange{}
+		for innerIndex, dest := range acl.Destinations {
+			dests, err := h.generateACLPolicyDest(machines, *h.aclPolicy, dest, needsWildcard)
+			if err != nil {
+				log.Error().
+					Msgf("Error parsing ACL %d, Destination %d", index, innerIndex)
+
+				return nil, err
+			}
+			destPorts = append(destPorts, dests...)
+		}
+
+		rules = append(rules, tailcfg.FilterRule{
+			SrcIPs:   srcIPs,
+			DstPorts: destPorts,
+			IPProto:  protocols,
+		})
+	}
+
+	return rules, nil
+}
+
+func (h *Headscale) generateACLPolicySrcIP(
+	machines []Machine,
+	aclPolicy ACLPolicy,
+	src string,
+) ([]string, error) {
+	return expandAlias(machines, aclPolicy, src, h.cfg.OIDC.StripEmaildomain)
+}
+
+func (h *Headscale) generateACLPolicyDest(
+	machines []Machine,
+	aclPolicy ACLPolicy,
+	dest string,
+	needsWildcard bool,
+) ([]tailcfg.NetPortRange, error) {
+	tokens := strings.Split(dest, ":")
+	if len(tokens) < expectedTokenItems || len(tokens) > 3 {
+		return nil, errInvalidPortFormat
+	}
+
+	var alias string
+	// We can have here stuff like:
+	// git-server:*
+	// 192.168.1.0/24:22
+	// tag:montreal-webserver:80,443
+	// tag:api-server:443
+	// example-host-1:*
+	if len(tokens) == expectedTokenItems {
+		alias = tokens[0]
+	} else {
+		alias = fmt.Sprintf("%s:%s", tokens[0], tokens[1])
+	}
+
+	expanded, err := expandAlias(
+		machines,
+		aclPolicy,
+		alias,
+		h.cfg.OIDC.StripEmaildomain,
+	)
+	if err != nil {
+		return nil, err
+	}
+	ports, err := expandPorts(tokens[len(tokens)-1], needsWildcard)
+	if err != nil {
+		return nil, err
+	}
+
+	dests := []tailcfg.NetPortRange{}
+	for _, d := range expanded {
+		for _, p := range *ports {
+			pr := tailcfg.NetPortRange{
+				IP:    d,
+				Ports: p,
+			}
+			dests = append(dests, pr)
+		}
+	}
+
+	return dests, nil
+}
+
+// parseProtocol reads the proto field of the ACL and generates a list of
+// protocols that will be allowed, following the IANA IP protocol number
+// https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
+//
+// If the ACL proto field is empty, it allows ICMPv4, ICMPv6, TCP, and UDP,
+// as per Tailscale behaviour (see tailcfg.FilterRule).
+//
+// Also returns a boolean indicating if the protocol
+// requires all the destinations to use wildcard as port number (only TCP,
+// UDP and SCTP support specifying ports).
+func parseProtocol(protocol string) ([]int, bool, error) {
+	switch protocol {
+	case "":
+		return []int{protocolICMP, protocolIPv6ICMP, protocolTCP, protocolUDP}, false, nil
+	case "igmp":
+		return []int{protocolIGMP}, true, nil
+	case "ipv4", "ip-in-ip":
+		return []int{protocolIPv4}, true, nil
+	case "tcp":
+		return []int{protocolTCP}, false, nil
+	case "egp":
+		return []int{protocolEGP}, true, nil
+	case "igp":
+		return []int{protocolIGP}, true, nil
+	case "udp":
+		return []int{protocolUDP}, false, nil
+	case "gre":
+		return []int{protocolGRE}, true, nil
+	case "esp":
+		return []int{protocolESP}, true, nil
+	case "ah":
+		return []int{protocolAH}, true, nil
+	case "sctp":
+		return []int{protocolSCTP}, false, nil
+	case "icmp":
+		return []int{protocolICMP, protocolIPv6ICMP}, true, nil
+
+	default:
+		protocolNumber, err := strconv.Atoi(protocol)
+		if err != nil {
+			return nil, false, err
+		}
+		needsWildcard := protocolNumber != protocolTCP && protocolNumber != protocolUDP && protocolNumber != protocolSCTP
+
+		return []int{protocolNumber}, needsWildcard, nil
+	}
+}
+
+// expandalias has an input of either
+// - a namespace
+// - a group
+// - a tag
+// and transform these in IPAddresses.
+func expandAlias(
+	machines []Machine,
+	aclPolicy ACLPolicy,
+	alias string,
+	stripEmailDomain bool,
+) ([]string, error) {
+	ips := []string{}
+	if alias == "*" {
+		return []string{"*"}, nil
+	}
+
+	log.Debug().
+		Str("alias", alias).
+		Msg("Expanding")
+
+	if strings.HasPrefix(alias, "group:") {
+		namespaces, err := expandGroup(aclPolicy, alias, stripEmailDomain)
+		if err != nil {
+			return ips, err
+		}
+		for _, n := range namespaces {
+			nodes := filterMachinesByNamespace(machines, n)
+			for _, node := range nodes {
+				ips = append(ips, node.IPAddresses.ToStringSlice()...)
+			}
+		}
+
+		return ips, nil
+	}
+
+	if strings.HasPrefix(alias, "tag:") {
+		// check for forced tags
+		for _, machine := range machines {
+			if contains(machine.ForcedTags, alias) {
+				ips = append(ips, machine.IPAddresses.ToStringSlice()...)
+			}
+		}
+
+		// find tag owners
+		owners, err := expandTagOwners(aclPolicy, alias, stripEmailDomain)
+		if err != nil {
+			if errors.Is(err, errInvalidTag) {
+				if len(ips) == 0 {
+					return ips, fmt.Errorf(
+						"%w. %v isn't owned by a TagOwner and no forced tags are defined",
+						errInvalidTag,
+						alias,
+					)
+				}
+
+				return ips, nil
+			} else {
+				return ips, err
+			}
+		}
+
+		// filter out machines per tag owner
+		for _, namespace := range owners {
+			machines := filterMachinesByNamespace(machines, namespace)
+			for _, machine := range machines {
+				hi := machine.GetHostInfo()
+				if contains(hi.RequestTags, alias) {
+					ips = append(ips, machine.IPAddresses.ToStringSlice()...)
+				}
+			}
+		}
+
+		return ips, nil
+	}
+
+	// if alias is a namespace
+	nodes := filterMachinesByNamespace(machines, alias)
+	nodes = excludeCorrectlyTaggedNodes(aclPolicy, nodes, alias)
+
+	for _, n := range nodes {
+		ips = append(ips, n.IPAddresses.ToStringSlice()...)
+	}
+	if len(ips) > 0 {
+		return ips, nil
+	}
+
+	// if alias is an host
+	if h, ok := aclPolicy.Hosts[alias]; ok {
+		return []string{h.String()}, nil
+	}
+
+	// if alias is an IP
+	ip, err := netaddr.ParseIP(alias)
+	if err == nil {
+		return []string{ip.String()}, nil
+	}
+
+	// if alias is an CIDR
+	cidr, err := netaddr.ParseIPPrefix(alias)
+	if err == nil {
+		return []string{cidr.String()}, nil
+	}
+
+	log.Warn().Msgf("No IPs found with the alias %v", alias)
+
+	return ips, nil
+}
+
+// excludeCorrectlyTaggedNodes will remove from the list of input nodes the ones
+// that are correctly tagged since they should not be listed as being in the namespace
+// we assume in this function that we only have nodes from 1 namespace.
+func excludeCorrectlyTaggedNodes(
+	aclPolicy ACLPolicy,
+	nodes []Machine,
+	namespace string,
+) []Machine {
+	out := []Machine{}
+	tags := []string{}
+	for tag, ns := range aclPolicy.TagOwners {
+		if contains(ns, namespace) {
+			tags = append(tags, tag)
+		}
+	}
+	// for each machine if tag is in tags list, don't append it.
+	for _, machine := range nodes {
+		hi := machine.GetHostInfo()
+
+		found := false
+		for _, t := range hi.RequestTags {
+			if contains(tags, t) {
+				found = true
+
+				break
+			}
+		}
+		if len(machine.ForcedTags) > 0 {
+			found = true
+		}
+		if !found {
+			out = append(out, machine)
+		}
+	}
+
+	return out
+}
+
+func expandPorts(portsStr string, needsWildcard bool) (*[]tailcfg.PortRange, error) {
+	if portsStr == "*" {
+		return &[]tailcfg.PortRange{
+			{First: portRangeBegin, Last: portRangeEnd},
+		}, nil
+	}
+
+	if needsWildcard {
+		return nil, errWildcardIsNeeded
+	}
+
+	ports := []tailcfg.PortRange{}
+	for _, portStr := range strings.Split(portsStr, ",") {
+		rang := strings.Split(portStr, "-")
+		switch len(rang) {
+		case 1:
+			port, err := strconv.ParseUint(rang[0], Base10, BitSize16)
+			if err != nil {
+				return nil, err
+			}
+			ports = append(ports, tailcfg.PortRange{
+				First: uint16(port),
+				Last:  uint16(port),
+			})
+
+		case expectedTokenItems:
+			start, err := strconv.ParseUint(rang[0], Base10, BitSize16)
+			if err != nil {
+				return nil, err
+			}
+			last, err := strconv.ParseUint(rang[1], Base10, BitSize16)
+			if err != nil {
+				return nil, err
+			}
+			ports = append(ports, tailcfg.PortRange{
+				First: uint16(start),
+				Last:  uint16(last),
+			})
+
+		default:
+			return nil, errInvalidPortFormat
+		}
+	}
+
+	return &ports, nil
+}
+
+func filterMachinesByNamespace(machines []Machine, namespace string) []Machine {
+	out := []Machine{}
+	for _, machine := range machines {
+		if machine.Namespace.Name == namespace {
+			out = append(out, machine)
+		}
+	}
+
+	return out
+}
+
+// expandTagOwners will return a list of namespace. An owner can be either a namespace or a group
+// a group cannot be composed of groups.
+func expandTagOwners(
+	aclPolicy ACLPolicy,
+	tag string,
+	stripEmailDomain bool,
+) ([]string, error) {
+	var owners []string
+	ows, ok := aclPolicy.TagOwners[tag]
+	if !ok {
+		return []string{}, fmt.Errorf(
+			"%w. %v isn't owned by a TagOwner. Please add one first. https://tailscale.com/kb/1018/acls/#tag-owners",
+			errInvalidTag,
+			tag,
+		)
+	}
+	for _, owner := range ows {
+		if strings.HasPrefix(owner, "group:") {
+			gs, err := expandGroup(aclPolicy, owner, stripEmailDomain)
+			if err != nil {
+				return []string{}, err
+			}
+			owners = append(owners, gs...)
+		} else {
+			owners = append(owners, owner)
+		}
+	}
+
+	return owners, nil
+}
+
+// expandGroup will return the list of namespace inside the group
+// after some validation.
+func expandGroup(
+	aclPolicy ACLPolicy,
+	group string,
+	stripEmailDomain bool,
+) ([]string, error) {
+	outGroups := []string{}
+	aclGroups, ok := aclPolicy.Groups[group]
+	if !ok {
+		return []string{}, fmt.Errorf(
+			"group %v isn't registered. %w",
+			group,
+			errInvalidGroup,
+		)
+	}
+	for _, group := range aclGroups {
+		if strings.HasPrefix(group, "group:") {
+			return []string{}, fmt.Errorf(
+				"%w. A group cannot be composed of groups. https://tailscale.com/kb/1018/acls/#groups",
+				errInvalidGroup,
+			)
+		}
+		grp, err := NormalizeToFQDNRules(group, stripEmailDomain)
+		if err != nil {
+			return []string{}, fmt.Errorf(
+				"failed to normalize group %q, err: %w",
+				group,
+				errInvalidGroup,
+			)
+		}
+		outGroups = append(outGroups, grp)
+	}
+
+	return outGroups, nil
+}

acls_types.go

@@ -0,0 +1,102 @@
+package headscale
+
+import (
+	"encoding/json"
+	"strings"
+
+	"github.com/tailscale/hujson"
+	"gopkg.in/yaml.v3"
+	"inet.af/netaddr"
+)
+
+// ACLPolicy represents a Tailscale ACL Policy.
+type ACLPolicy struct {
+	Groups    Groups    `json:"groups"    yaml:"groups"`
+	Hosts     Hosts     `json:"hosts"     yaml:"hosts"`
+	TagOwners TagOwners `json:"tagOwners" yaml:"tagOwners"`
+	ACLs      []ACL     `json:"acls"      yaml:"acls"`
+	Tests     []ACLTest `json:"tests"     yaml:"tests"`
+}
+
+// ACL is a basic rule for the ACL Policy.
+type ACL struct {
+	Action       string   `json:"action" yaml:"action"`
+	Protocol     string   `json:"proto" yaml:"proto"`
+	Sources      []string `json:"src"  yaml:"src"`
+	Destinations []string `json:"dst"  yaml:"dst"`
+}
+
+// Groups references a series of alias in the ACL rules.
+type Groups map[string][]string
+
+// Hosts are alias for IP addresses or subnets.
+type Hosts map[string]netaddr.IPPrefix
+
+// TagOwners specify what users (namespaces?) are allow to use certain tags.
+type TagOwners map[string][]string
+
+// ACLTest is not implemented, but should be use to check if a certain rule is allowed.
+type ACLTest struct {
+	Source string   `json:"src"           yaml:"src"`
+	Accept []string `json:"accept"          yaml:"accept"`
+	Deny   []string `json:"deny,omitempty" yaml:"deny,omitempty"`
+}
+
+// UnmarshalJSON allows to parse the Hosts directly into netaddr objects.
+func (hosts *Hosts) UnmarshalJSON(data []byte) error {
+	newHosts := Hosts{}
+	hostIPPrefixMap := make(map[string]string)
+	ast, err := hujson.Parse(data)
+	if err != nil {
+		return err
+	}
+	ast.Standardize()
+	data = ast.Pack()
+	err = json.Unmarshal(data, &hostIPPrefixMap)
+	if err != nil {
+		return err
+	}
+	for host, prefixStr := range hostIPPrefixMap {
+		if !strings.Contains(prefixStr, "/") {
+			prefixStr += "/32"
+		}
+		prefix, err := netaddr.ParseIPPrefix(prefixStr)
+		if err != nil {
+			return err
+		}
+		newHosts[host] = prefix
+	}
+	*hosts = newHosts
+
+	return nil
+}
+
+// UnmarshalYAML allows to parse the Hosts directly into netaddr objects.
+func (hosts *Hosts) UnmarshalYAML(data []byte) error {
+	newHosts := Hosts{}
+	hostIPPrefixMap := make(map[string]string)
+
+	err := yaml.Unmarshal(data, &hostIPPrefixMap)
+	if err != nil {
+		return err
+	}
+	for host, prefixStr := range hostIPPrefixMap {
+		prefix, err := netaddr.ParseIPPrefix(prefixStr)
+		if err != nil {
+			return err
+		}
+		newHosts[host] = prefix
+	}
+	*hosts = newHosts
+
+	return nil
+}
+
+// IsZero is perhaps a bit naive here.
+func (policy ACLPolicy) IsZero() bool {
+	if len(policy.Groups) == 0 && len(policy.Hosts) == 0 && len(policy.ACLs) == 0 {
+		return true
+	}
+
+	return false
+}

api.go

@@ -0,0 +1,865 @@
+package headscale
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"html/template"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/klauspost/compress/zstd"
+	"github.com/rs/zerolog/log"
+	"gorm.io/gorm"
+	"tailscale.com/tailcfg"
+	"tailscale.com/types/key"
+)
+
+const (
+	reservedResponseHeaderSize               = 4
+	RegisterMethodAuthKey                    = "authkey"
+	RegisterMethodOIDC                       = "oidc"
+	RegisterMethodCLI                        = "cli"
+	ErrRegisterMethodCLIDoesNotSupportExpire = Error(
+		"machines registered with CLI does not support expire",
+	)
+)
+
+func (h *Headscale) HealthHandler(
+	writer http.ResponseWriter,
+	req *http.Request,
+) {
+	respond := func(err error) {
+		writer.Header().Set("Content-Type", "application/health+json; charset=utf-8")
+
+		res := struct {
+			Status string `json:"status"`
+		}{
+			Status: "pass",
+		}
+
+		if err != nil {
+			writer.WriteHeader(http.StatusInternalServerError)
+			log.Error().Caller().Err(err).Msg("health check failed")
+			res.Status = "fail"
+		}
+
+		buf, err := json.Marshal(res)
+		if err != nil {
+			log.Error().Caller().Err(err).Msg("marshal failed")
+		}
+		_, err = writer.Write(buf)
+		if err != nil {
+			log.Error().Caller().Err(err).Msg("write failed")
+		}
+	}
+
+	if err := h.pingDB(); err != nil {
+		respond(err)
+
+		return
+	}
+
+	respond(nil)
+}
+
+// KeyHandler provides the Headscale pub key
+// Listens in /key.
+func (h *Headscale) KeyHandler(
+	writer http.ResponseWriter,
+	req *http.Request,
+) {
+	writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err := writer.Write([]byte(MachinePublicKeyStripPrefix(h.privateKey.Public())))
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+type registerWebAPITemplateConfig struct {
+	Key string
+}
+
+var registerWebAPITemplate = template.Must(
+	template.New("registerweb").Parse(`
+<html>
+	<head>
+		<title>Registration - Headscale</title>
+	</head>
+	<body>
+		<h1>headscale</h1>
+		<h2>Machine registration</h2>
+		<p>
+			Run the command below in the headscale server to add this machine to your network:
+		</p>
+		<pre><code>headscale -n NAMESPACE nodes register --key {{.Key}}</code></pre>
+	</body>
+</html>
+`))
+
+// RegisterWebAPI shows a simple message in the browser to point to the CLI
+// Listens in /register.
+func (h *Headscale) RegisterWebAPI(
+	writer http.ResponseWriter,
+	req *http.Request,
+) {
+	machineKeyStr := req.URL.Query().Get("key")
+	if machineKeyStr == "" {
+		writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		writer.WriteHeader(http.StatusBadRequest)
+		_, err := writer.Write([]byte("Wrong params"))
+		if err != nil {
+			log.Error().
+				Caller().
+				Err(err).
+				Msg("Failed to write response")
+		}
+
+		return
+	}
+
+	var content bytes.Buffer
+	if err := registerWebAPITemplate.Execute(&content, registerWebAPITemplateConfig{
+		Key: machineKeyStr,
+	}); err != nil {
+		log.Error().
+			Str("func", "RegisterWebAPI").
+			Err(err).
+			Msg("Could not render register web API template")
+		writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		writer.WriteHeader(http.StatusInternalServerError)
+		_, err = writer.Write([]byte("Could not render register web API template"))
+		if err != nil {
+			log.Error().
+				Caller().
+				Err(err).
+				Msg("Failed to write response")
+		}
+
+		return
+	}
+
+	writer.Header().Set("Content-Type", "text/html; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err := writer.Write(content.Bytes())
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+// RegistrationHandler handles the actual registration process of a machine
+// Endpoint /machine/:mkey.
+func (h *Headscale) RegistrationHandler(
+	writer http.ResponseWriter,
+	req *http.Request,
+) {
+	vars := mux.Vars(req)
+	machineKeyStr, ok := vars["mkey"]
+	if !ok || machineKeyStr == "" {
+		log.Error().
+			Str("handler", "RegistrationHandler").
+			Msg("No machine ID in request")
+		http.Error(writer, "No machine ID in request", http.StatusBadRequest)
+
+		return
+	}
+
+	body, _ := io.ReadAll(req.Body)
+
+	var machineKey key.MachinePublic
+	err := machineKey.UnmarshalText([]byte(MachinePublicKeyEnsurePrefix(machineKeyStr)))
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot parse machine key")
+		machineRegistrations.WithLabelValues("unknown", "web", "error", "unknown").Inc()
+		http.Error(writer, "Cannot parse machine key", http.StatusBadRequest)
+
+		return
+	}
+	registerRequest := tailcfg.RegisterRequest{}
+	err = decode(body, &registerRequest, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot decode message")
+		machineRegistrations.WithLabelValues("unknown", "web", "error", "unknown").Inc()
+		http.Error(writer, "Cannot decode message", http.StatusBadRequest)
+
+		return
+	}
+
+	now := time.Now().UTC()
+	machine, err := h.GetMachineByMachineKey(machineKey)
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		log.Info().Str("machine", registerRequest.Hostinfo.Hostname).Msg("New machine")
+
+		machineKeyStr := MachinePublicKeyStripPrefix(machineKey)
+
+		// If the machine has AuthKey set, handle registration via PreAuthKeys
+		if registerRequest.Auth.AuthKey != "" {
+			h.handleAuthKey(writer, req, machineKey, registerRequest)
+
+			return
+		}
+
+		givenName, err := h.GenerateGivenName(registerRequest.Hostinfo.Hostname)
+		if err != nil {
+			log.Error().
+				Caller().
+				Str("func", "RegistrationHandler").
+				Str("hostinfo.name", registerRequest.Hostinfo.Hostname).
+				Err(err)
+
+			return
+		}
+
+		// The machine did not have a key to authenticate, which means
+		// that we rely on a method that calls back some how (OpenID or CLI)
+		// We create the machine and then keep it around until a callback
+		// happens
+		newMachine := Machine{
+			MachineKey: machineKeyStr,
+			Hostname:   registerRequest.Hostinfo.Hostname,
+			GivenName:  givenName,
+			NodeKey:    NodePublicKeyStripPrefix(registerRequest.NodeKey),
+			LastSeen:   &now,
+			Expiry:     &time.Time{},
+		}
+
+		if !registerRequest.Expiry.IsZero() {
+			log.Trace().
+				Caller().
+				Str("machine", registerRequest.Hostinfo.Hostname).
+				Time("expiry", registerRequest.Expiry).
+				Msg("Non-zero expiry time requested")
+			newMachine.Expiry = &registerRequest.Expiry
+		}
+
+		h.registrationCache.Set(
+			machineKeyStr,
+			newMachine,
+			registerCacheExpiration,
+		)
+
+		h.handleMachineRegistrationNew(writer, req, machineKey, registerRequest)
+
+		return
+	}
+
+	// The machine is already registered, so we need to pass through reauth or key update.
+	if machine != nil {
+		// If the NodeKey stored in headscale is the same as the key presented in a registration
+		// request, then we have a node that is either:
+		// - Trying to log out (sending a expiry in the past)
+		// - A valid, registered machine, looking for the node map
+		// - Expired machine wanting to reauthenticate
+		if machine.NodeKey == NodePublicKeyStripPrefix(registerRequest.NodeKey) {
+			// The client sends an Expiry in the past if the client is requesting to expire the key (aka logout)
+			//   https://github.com/tailscale/tailscale/blob/main/tailcfg/tailcfg.go#L648
+			if !registerRequest.Expiry.IsZero() && registerRequest.Expiry.UTC().Before(now) {
+				h.handleMachineLogOut(writer, req, machineKey, *machine)
+
+				return
+			}
+
+			// If machine is not expired, and is register, we have a already accepted this machine,
+			// let it proceed with a valid registration
+			if !machine.isExpired() {
+				h.handleMachineValidRegistration(writer, req, machineKey, *machine)
+
+				return
+			}
+		}
+
+		// The NodeKey we have matches OldNodeKey, which means this is a refresh after a key expiration
+		if machine.NodeKey == NodePublicKeyStripPrefix(registerRequest.OldNodeKey) &&
+			!machine.isExpired() {
+			h.handleMachineRefreshKey(writer, req, machineKey, registerRequest, *machine)
+
+			return
+		}
+
+		// The machine has expired
+		h.handleMachineExpired(writer, req, machineKey, registerRequest, *machine)
+
+		return
+	}
+}
+
+func (h *Headscale) getMapResponse(
+	machineKey key.MachinePublic,
+	mapRequest tailcfg.MapRequest,
+	machine *Machine,
+) ([]byte, error) {
+	log.Trace().
+		Str("func", "getMapResponse").
+		Str("machine", mapRequest.Hostinfo.Hostname).
+		Msg("Creating Map response")
+	node, err := machine.toNode(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
+	if err != nil {
+		log.Error().
+			Caller().
+			Str("func", "getMapResponse").
+			Err(err).
+			Msg("Cannot convert to node")
+
+		return nil, err
+	}
+
+	peers, err := h.getValidPeers(machine)
+	if err != nil {
+		log.Error().
+			Caller().
+			Str("func", "getMapResponse").
+			Err(err).
+			Msg("Cannot fetch peers")
+
+		return nil, err
+	}
+
+	profiles := getMapResponseUserProfiles(*machine, peers)
+
+	nodePeers, err := peers.toNodes(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
+	if err != nil {
+		log.Error().
+			Caller().
+			Str("func", "getMapResponse").
+			Err(err).
+			Msg("Failed to convert peers to Tailscale nodes")
+
+		return nil, err
+	}
+
+	dnsConfig := getMapResponseDNSConfig(
+		h.cfg.DNSConfig,
+		h.cfg.BaseDomain,
+		*machine,
+		peers,
+	)
+
+	resp := tailcfg.MapResponse{
+		KeepAlive:    false,
+		Node:         node,
+		Peers:        nodePeers,
+		DNSConfig:    dnsConfig,
+		Domain:       h.cfg.BaseDomain,
+		PacketFilter: h.aclRules,
+		DERPMap:      h.DERPMap,
+		UserProfiles: profiles,
+		Debug: &tailcfg.Debug{
+			DisableLogTail:      !h.cfg.LogTail.Enabled,
+			RandomizeClientPort: h.cfg.RandomizeClientPort,
+		},
+	}
+
+	log.Trace().
+		Str("func", "getMapResponse").
+		Str("machine", mapRequest.Hostinfo.Hostname).
+		// Interface("payload", resp).
+		Msgf("Generated map response: %s", tailMapResponseToString(resp))
+
+	var respBody []byte
+	if mapRequest.Compress == "zstd" {
+		src, err := json.Marshal(resp)
+		if err != nil {
+			log.Error().
+				Caller().
+				Str("func", "getMapResponse").
+				Err(err).
+				Msg("Failed to marshal response for the client")
+
+			return nil, err
+		}
+
+		encoder, _ := zstd.NewWriter(nil)
+		srcCompressed := encoder.EncodeAll(src, nil)
+		respBody = h.privateKey.SealTo(machineKey, srcCompressed)
+	} else {
+		respBody, err = encode(resp, &machineKey, h.privateKey)
+		if err != nil {
+			return nil, err
+		}
+	}
+	// declare the incoming size on the first 4 bytes
+	data := make([]byte, reservedResponseHeaderSize)
+	binary.LittleEndian.PutUint32(data, uint32(len(respBody)))
+	data = append(data, respBody...)
+
+	return data, nil
+}
+
+func (h *Headscale) getMapKeepAliveResponse(
+	machineKey key.MachinePublic,
+	mapRequest tailcfg.MapRequest,
+) ([]byte, error) {
+	mapResponse := tailcfg.MapResponse{
+		KeepAlive: true,
+	}
+	var respBody []byte
+	var err error
+	if mapRequest.Compress == "zstd" {
+		src, err := json.Marshal(mapResponse)
+		if err != nil {
+			log.Error().
+				Caller().
+				Str("func", "getMapKeepAliveResponse").
+				Err(err).
+				Msg("Failed to marshal keepalive response for the client")
+
+			return nil, err
+		}
+		encoder, _ := zstd.NewWriter(nil)
+		srcCompressed := encoder.EncodeAll(src, nil)
+		respBody = h.privateKey.SealTo(machineKey, srcCompressed)
+	} else {
+		respBody, err = encode(mapResponse, &machineKey, h.privateKey)
+		if err != nil {
+			return nil, err
+		}
+	}
+	data := make([]byte, reservedResponseHeaderSize)
+	binary.LittleEndian.PutUint32(data, uint32(len(respBody)))
+	data = append(data, respBody...)
+
+	return data, nil
+}
+
+func (h *Headscale) handleMachineLogOut(
+	writer http.ResponseWriter,
+	req *http.Request,
+	machineKey key.MachinePublic,
+	machine Machine,
+) {
+	resp := tailcfg.RegisterResponse{}
+
+	log.Info().
+		Str("machine", machine.Hostname).
+		Msg("Client requested logout")
+
+	err := h.ExpireMachine(&machine)
+	if err != nil {
+		log.Error().
+			Caller().
+			Str("func", "handleMachineLogOut").
+			Err(err).
+			Msg("Failed to expire machine")
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+
+	resp.AuthURL = ""
+	resp.MachineAuthorized = false
+	resp.User = *machine.Namespace.toUser()
+	respBody, err := encode(resp, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot encode message")
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+
+	writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err = writer.Write(respBody)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+func (h *Headscale) handleMachineValidRegistration(
+	writer http.ResponseWriter,
+	req *http.Request,
+	machineKey key.MachinePublic,
+	machine Machine,
+) {
+	resp := tailcfg.RegisterResponse{}
+
+	// The machine registration is valid, respond with redirect to /map
+	log.Debug().
+		Str("machine", machine.Hostname).
+		Msg("Client is registered and we have the current NodeKey. All clear to /map")
+
+	resp.AuthURL = ""
+	resp.MachineAuthorized = true
+	resp.User = *machine.Namespace.toUser()
+	resp.Login = *machine.Namespace.toLogin()
+
+	respBody, err := encode(resp, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot encode message")
+		machineRegistrations.WithLabelValues("update", "web", "error", machine.Namespace.Name).
+			Inc()
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+	machineRegistrations.WithLabelValues("update", "web", "success", machine.Namespace.Name).
+		Inc()
+
+	writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err = writer.Write(respBody)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+func (h *Headscale) handleMachineExpired(
+	writer http.ResponseWriter,
+	req *http.Request,
+	machineKey key.MachinePublic,
+	registerRequest tailcfg.RegisterRequest,
+	machine Machine,
+) {
+	resp := tailcfg.RegisterResponse{}
+
+	// The client has registered before, but has expired
+	log.Debug().
+		Str("machine", machine.Hostname).
+		Msg("Machine registration has expired. Sending a authurl to register")
+
+	if registerRequest.Auth.AuthKey != "" {
+		h.handleAuthKey(writer, req, machineKey, registerRequest)
+
+		return
+	}
+
+	if h.cfg.OIDC.Issuer != "" {
+		resp.AuthURL = fmt.Sprintf("%s/oidc/register/%s",
+			strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.String())
+	} else {
+		resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
+			strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.String())
+	}
+
+	respBody, err := encode(resp, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot encode message")
+		machineRegistrations.WithLabelValues("reauth", "web", "error", machine.Namespace.Name).
+			Inc()
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+	machineRegistrations.WithLabelValues("reauth", "web", "success", machine.Namespace.Name).
+		Inc()
+
+	writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err = writer.Write(respBody)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+func (h *Headscale) handleMachineRefreshKey(
+	writer http.ResponseWriter,
+	req *http.Request,
+	machineKey key.MachinePublic,
+	registerRequest tailcfg.RegisterRequest,
+	machine Machine,
+) {
+	resp := tailcfg.RegisterResponse{}
+
+	log.Debug().
+		Str("machine", machine.Hostname).
+		Msg("We have the OldNodeKey in the database. This is a key refresh")
+	machine.NodeKey = NodePublicKeyStripPrefix(registerRequest.NodeKey)
+
+	if err := h.db.Save(&machine).Error; err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to update machine key in the database")
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+
+	resp.AuthURL = ""
+	resp.User = *machine.Namespace.toUser()
+	respBody, err := encode(resp, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot encode message")
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+
+	writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err = writer.Write(respBody)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+func (h *Headscale) handleMachineRegistrationNew(
+	writer http.ResponseWriter,
+	req *http.Request,
+	machineKey key.MachinePublic,
+	registerRequest tailcfg.RegisterRequest,
+) {
+	resp := tailcfg.RegisterResponse{}
+
+	// The machine registration is new, redirect the client to the registration URL
+	log.Debug().
+		Str("machine", registerRequest.Hostinfo.Hostname).
+		Msg("The node is sending us a new NodeKey, sending auth url")
+	if h.cfg.OIDC.Issuer != "" {
+		resp.AuthURL = fmt.Sprintf(
+			"%s/oidc/register/%s",
+			strings.TrimSuffix(h.cfg.ServerURL, "/"),
+			machineKey.String(),
+		)
+	} else {
+		resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
+			strings.TrimSuffix(h.cfg.ServerURL, "/"), MachinePublicKeyStripPrefix(machineKey))
+	}
+
+	respBody, err := encode(resp, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Cannot encode message")
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+
+	writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err = writer.Write(respBody)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+}
+
+// TODO: check if any locks are needed around IP allocation.
+func (h *Headscale) handleAuthKey(
+	writer http.ResponseWriter,
+	req *http.Request,
+	machineKey key.MachinePublic,
+	registerRequest tailcfg.RegisterRequest,
+) {
+	machineKeyStr := MachinePublicKeyStripPrefix(machineKey)
+
+	log.Debug().
+		Str("func", "handleAuthKey").
+		Str("machine", registerRequest.Hostinfo.Hostname).
+		Msgf("Processing auth key for %s", registerRequest.Hostinfo.Hostname)
+	resp := tailcfg.RegisterResponse{}
+
+	pak, err := h.checkKeyValidity(registerRequest.Auth.AuthKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Str("func", "handleAuthKey").
+			Str("machine", registerRequest.Hostinfo.Hostname).
+			Err(err).
+			Msg("Failed authentication via AuthKey")
+		resp.MachineAuthorized = false
+		respBody, err := encode(resp, &machineKey, h.privateKey)
+		if err != nil {
+			log.Error().
+				Caller().
+				Str("func", "handleAuthKey").
+				Str("machine", registerRequest.Hostinfo.Hostname).
+				Err(err).
+				Msg("Cannot encode message")
+			http.Error(writer, "Internal server error", http.StatusInternalServerError)
+			machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
+				Inc()
+
+			return
+		}
+
+		writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+		writer.WriteHeader(http.StatusUnauthorized)
+		_, err = writer.Write(respBody)
+		if err != nil {
+			log.Error().
+				Caller().
+				Err(err).
+				Msg("Failed to write response")
+		}
+
+		log.Error().
+			Caller().
+			Str("func", "handleAuthKey").
+			Str("machine", registerRequest.Hostinfo.Hostname).
+			Msg("Failed authentication via AuthKey")
+
+		if pak != nil {
+			machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
+				Inc()
+		} else {
+			machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", "unknown").Inc()
+		}
+
+		return
+	}
+
+	log.Debug().
+		Str("func", "handleAuthKey").
+		Str("machine", registerRequest.Hostinfo.Hostname).
+		Msg("Authentication key was valid, proceeding to acquire IP addresses")
+
+	nodeKey := NodePublicKeyStripPrefix(registerRequest.NodeKey)
+
+	// retrieve machine information if it exist
+	// The error is not important, because if it does not
+	// exist, then this is a new machine and we will move
+	// on to registration.
+	machine, _ := h.GetMachineByMachineKey(machineKey)
+	if machine != nil {
+		log.Trace().
+			Caller().
+			Str("machine", machine.Hostname).
+			Msg("machine already registered, refreshing with new auth key")
+
+		machine.NodeKey = nodeKey
+		machine.AuthKeyID = uint(pak.ID)
+		err := h.RefreshMachine(machine, registerRequest.Expiry)
+		if err != nil {
+			log.Error().
+				Caller().
+				Str("machine", machine.Hostname).
+				Err(err).
+				Msg("Failed to refresh machine")
+
+			return
+		}
+	} else {
+		now := time.Now().UTC()
+
+		givenName, err := h.GenerateGivenName(registerRequest.Hostinfo.Hostname)
+		if err != nil {
+			log.Error().
+				Caller().
+				Str("func", "RegistrationHandler").
+				Str("hostinfo.name", registerRequest.Hostinfo.Hostname).
+				Err(err)
+
+			return
+		}
+
+		machineToRegister := Machine{
+			Hostname:       registerRequest.Hostinfo.Hostname,
+			GivenName:      givenName,
+			NamespaceID:    pak.Namespace.ID,
+			MachineKey:     machineKeyStr,
+			RegisterMethod: RegisterMethodAuthKey,
+			Expiry:         &registerRequest.Expiry,
+			NodeKey:        nodeKey,
+			LastSeen:       &now,
+			AuthKeyID:      uint(pak.ID),
+		}
+
+		machine, err = h.RegisterMachine(
+			machineToRegister,
+		)
+		if err != nil {
+			log.Error().
+				Caller().
+				Err(err).
+				Msg("could not register machine")
+			machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
+				Inc()
+			http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+			return
+		}
+	}
+
+	err = h.UsePreAuthKey(pak)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to use pre-auth key")
+		machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
+			Inc()
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+
+	resp.MachineAuthorized = true
+	resp.User = *pak.Namespace.toUser()
+	respBody, err := encode(resp, &machineKey, h.privateKey)
+	if err != nil {
+		log.Error().
+			Caller().
+			Str("func", "handleAuthKey").
+			Str("machine", registerRequest.Hostinfo.Hostname).
+			Err(err).
+			Msg("Cannot encode message")
+		machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
+			Inc()
+		http.Error(writer, "Internal server error", http.StatusInternalServerError)
+
+		return
+	}
+	machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "success", pak.Namespace.Name).
+		Inc()
+	writer.Header().Set("Content-Type", "application/json; charset=utf-8")
+	writer.WriteHeader(http.StatusOK)
+	_, err = writer.Write(respBody)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
+	}
+
+	log.Info().
+		Str("func", "handleAuthKey").
+		Str("machine", registerRequest.Hostinfo.Hostname).
+		Str("ips", strings.Join(machine.IPAddresses.ToStringSlice(), ", ")).
+		Msg("Successfully authenticated via AuthKey")
+}

api_key.go

@@ -0,0 +1,157 @@
+package headscale
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
+	"golang.org/x/crypto/bcrypt"
+	"google.golang.org/protobuf/types/known/timestamppb"
+)
+
+const (
+	apiPrefixLength = 7
+	apiKeyLength    = 32
+
+	errAPIKeyFailedToParse = Error("Failed to parse ApiKey")
+)
+
+// APIKey describes the datamodel for API keys used to remotely authenticate with
+// headscale.
+type APIKey struct {
+	ID     uint64 `gorm:"primary_key"`
+	Prefix string `gorm:"uniqueIndex"`
+	Hash   []byte
+
+	CreatedAt  *time.Time
+	Expiration *time.Time
+	LastSeen   *time.Time
+}
+
+// CreateAPIKey creates a new ApiKey in a namespace, and returns it.
+func (h *Headscale) CreateAPIKey(
+	expiration *time.Time,
+) (string, *APIKey, error) {
+	prefix, err := GenerateRandomStringURLSafe(apiPrefixLength)
+	if err != nil {
+		return "", nil, err
+	}
+
+	toBeHashed, err := GenerateRandomStringURLSafe(apiKeyLength)
+	if err != nil {
+		return "", nil, err
+	}
+
+	// Key to return to user, this will only be visible _once_
+	keyStr := prefix + "." + toBeHashed
+
+	hash, err := bcrypt.GenerateFromPassword([]byte(toBeHashed), bcrypt.DefaultCost)
+	if err != nil {
+		return "", nil, err
+	}
+
+	key := APIKey{
+		Prefix:     prefix,
+		Hash:       hash,
+		Expiration: expiration,
+	}
+
+	if err := h.db.Save(&key).Error; err != nil {
+		return "", nil, fmt.Errorf("failed to save API key to database: %w", err)
+	}
+
+	return keyStr, &key, nil
+}
+
+// ListAPIKeys returns the list of ApiKeys for a namespace.
+func (h *Headscale) ListAPIKeys() ([]APIKey, error) {
+	keys := []APIKey{}
+	if err := h.db.Find(&keys).Error; err != nil {
+		return nil, err
+	}
+
+	return keys, nil
+}
+
+// GetAPIKey returns a ApiKey for a given key.
+func (h *Headscale) GetAPIKey(prefix string) (*APIKey, error) {
+	key := APIKey{}
+	if result := h.db.First(&key, "prefix = ?", prefix); result.Error != nil {
+		return nil, result.Error
+	}
+
+	return &key, nil
+}
+
+// GetAPIKeyByID returns a ApiKey for a given id.
+func (h *Headscale) GetAPIKeyByID(id uint64) (*APIKey, error) {
+	key := APIKey{}
+	if result := h.db.Find(&APIKey{ID: id}).First(&key); result.Error != nil {
+		return nil, result.Error
+	}
+
+	return &key, nil
+}
+
+// DestroyAPIKey destroys a ApiKey. Returns error if the ApiKey
+// does not exist.
+func (h *Headscale) DestroyAPIKey(key APIKey) error {
+	if result := h.db.Unscoped().Delete(key); result.Error != nil {
+		return result.Error
+	}
+
+	return nil
+}
+
+// ExpireAPIKey marks a ApiKey as expired.
+func (h *Headscale) ExpireAPIKey(key *APIKey) error {
+	if err := h.db.Model(&key).Update("Expiration", time.Now()).Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *Headscale) ValidateAPIKey(keyStr string) (bool, error) {
+	prefix, hash, found := strings.Cut(keyStr, ".")
+	if !found {
+		return false, errAPIKeyFailedToParse
+	}
+
+	key, err := h.GetAPIKey(prefix)
+	if err != nil {
+		return false, fmt.Errorf("failed to validate api key: %w", err)
+	}
+
+	if key.Expiration.Before(time.Now()) {
+		return false, nil
+	}
+
+	if err := bcrypt.CompareHashAndPassword(key.Hash, []byte(hash)); err != nil {
+		return false, err
+	}
+
+	return true, nil
+}
+
+func (key *APIKey) toProto() *v1.ApiKey {
+	protoKey := v1.ApiKey{
+		Id:     key.ID,
+		Prefix: key.Prefix,
+	}
+
+	if key.Expiration != nil {
+		protoKey.Expiration = timestamppb.New(*key.Expiration)
+	}
+
+	if key.CreatedAt != nil {
+		protoKey.CreatedAt = timestamppb.New(*key.CreatedAt)
+	}
+
+	if key.LastSeen != nil {
+		protoKey.LastSeen = timestamppb.New(*key.LastSeen)
+	}
+
+	return &protoKey
+}

api_key_test.go

@@ -1,4 +1,4 @@
-package db
+package headscale
 
 import (
 	"time"
@@ -7,7 +7,7 @@ import (
 )
 
 func (*Suite) TestCreateAPIKey(c *check.C) {
-	apiKeyStr, apiKey, err := db.CreateAPIKey(nil)
+	apiKeyStr, apiKey, err := app.CreateAPIKey(nil)
 	c.Assert(err, check.IsNil)
 	c.Assert(apiKey, check.NotNil)
 
@@ -16,74 +16,74 @@ func (*Suite) TestCreateAPIKey(c *check.C) {
 	c.Assert(apiKey.Hash, check.NotNil)
 	c.Assert(apiKeyStr, check.Not(check.Equals), "")
 
-	_, err = db.ListAPIKeys()
+	_, err = app.ListAPIKeys()
 	c.Assert(err, check.IsNil)
 
-	keys, err := db.ListAPIKeys()
+	keys, err := app.ListAPIKeys()
 	c.Assert(err, check.IsNil)
 	c.Assert(len(keys), check.Equals, 1)
 }
 
 func (*Suite) TestAPIKeyDoesNotExist(c *check.C) {
-	key, err := db.GetAPIKey("does-not-exist")
+	key, err := app.GetAPIKey("does-not-exist")
 	c.Assert(err, check.NotNil)
 	c.Assert(key, check.IsNil)
 }
 
 func (*Suite) TestValidateAPIKeyOk(c *check.C) {
 	nowPlus2 := time.Now().Add(2 * time.Hour)
-	apiKeyStr, apiKey, err := db.CreateAPIKey(&nowPlus2)
+	apiKeyStr, apiKey, err := app.CreateAPIKey(&nowPlus2)
 	c.Assert(err, check.IsNil)
 	c.Assert(apiKey, check.NotNil)
 
-	valid, err := db.ValidateAPIKey(apiKeyStr)
+	valid, err := app.ValidateAPIKey(apiKeyStr)
 	c.Assert(err, check.IsNil)
 	c.Assert(valid, check.Equals, true)
 }
 
 func (*Suite) TestValidateAPIKeyNotOk(c *check.C) {
 	nowMinus2 := time.Now().Add(time.Duration(-2) * time.Hour)
-	apiKeyStr, apiKey, err := db.CreateAPIKey(&nowMinus2)
+	apiKeyStr, apiKey, err := app.CreateAPIKey(&nowMinus2)
 	c.Assert(err, check.IsNil)
 	c.Assert(apiKey, check.NotNil)
 
-	valid, err := db.ValidateAPIKey(apiKeyStr)
+	valid, err := app.ValidateAPIKey(apiKeyStr)
 	c.Assert(err, check.IsNil)
 	c.Assert(valid, check.Equals, false)
 
 	now := time.Now()
-	apiKeyStrNow, apiKey, err := db.CreateAPIKey(&now)
+	apiKeyStrNow, apiKey, err := app.CreateAPIKey(&now)
 	c.Assert(err, check.IsNil)
 	c.Assert(apiKey, check.NotNil)
 
-	validNow, err := db.ValidateAPIKey(apiKeyStrNow)
+	validNow, err := app.ValidateAPIKey(apiKeyStrNow)
 	c.Assert(err, check.IsNil)
 	c.Assert(validNow, check.Equals, false)
 
-	validSilly, err := db.ValidateAPIKey("nota.validkey")
+	validSilly, err := app.ValidateAPIKey("nota.validkey")
 	c.Assert(err, check.NotNil)
 	c.Assert(validSilly, check.Equals, false)
 
-	validWithErr, err := db.ValidateAPIKey("produceerrorkey")
+	validWithErr, err := app.ValidateAPIKey("produceerrorkey")
 	c.Assert(err, check.NotNil)
 	c.Assert(validWithErr, check.Equals, false)
 }
 
 func (*Suite) TestExpireAPIKey(c *check.C) {
 	nowPlus2 := time.Now().Add(2 * time.Hour)
-	apiKeyStr, apiKey, err := db.CreateAPIKey(&nowPlus2)
+	apiKeyStr, apiKey, err := app.CreateAPIKey(&nowPlus2)
 	c.Assert(err, check.IsNil)
 	c.Assert(apiKey, check.NotNil)
 
-	valid, err := db.ValidateAPIKey(apiKeyStr)
+	valid, err := app.ValidateAPIKey(apiKeyStr)
 	c.Assert(err, check.IsNil)
 	c.Assert(valid, check.Equals, true)
 
-	err = db.ExpireAPIKey(apiKey)
+	err = app.ExpireAPIKey(apiKey)
 	c.Assert(err, check.IsNil)
 	c.Assert(apiKey.Expiration, check.NotNil)
 
-	notValid, err := db.ValidateAPIKey(apiKeyStr)
+	notValid, err := app.ValidateAPIKey(apiKeyStr)
 	c.Assert(err, check.IsNil)
 	c.Assert(notValid, check.Equals, false)
 }

app.go

@@ -0,0 +1,923 @@
+package headscale
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"os/signal"
+	"sort"
+	"strings"
+	"sync"
+	"syscall"
+	"time"
+
+	"github.com/coreos/go-oidc/v3/oidc"
+	"github.com/gorilla/mux"
+	grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
+	"github.com/patrickmn/go-cache"
+	zerolog "github.com/philip-bui/grpc-zerolog"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"github.com/puzpuzpuz/xsync"
+	zl "github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"golang.org/x/crypto/acme"
+	"golang.org/x/crypto/acme/autocert"
+	"golang.org/x/oauth2"
+	"golang.org/x/sync/errgroup"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/peer"
+	"google.golang.org/grpc/reflection"
+	"google.golang.org/grpc/status"
+	"gorm.io/gorm"
+	"tailscale.com/tailcfg"
+	"tailscale.com/types/dnstype"
+	"tailscale.com/types/key"
+)
+
+const (
+	errSTUNAddressNotSet                   = Error("STUN address not set")
+	errUnsupportedDatabase                 = Error("unsupported DB")
+	errUnsupportedLetsEncryptChallengeType = Error(
+		"unknown value for Lets Encrypt challenge type",
+	)
+)
+
+const (
+	AuthPrefix          = "Bearer "
+	Postgres            = "postgres"
+	Sqlite              = "sqlite3"
+	updateInterval      = 5000
+	HTTPReadTimeout     = 30 * time.Second
+	HTTPShutdownTimeout = 3 * time.Second
+	privateKeyFileMode  = 0o600
+
+	registerCacheExpiration = time.Minute * 15
+	registerCacheCleanup    = time.Minute * 20
+
+	DisabledClientAuth = "disabled"
+	RelaxedClientAuth  = "relaxed"
+	EnforcedClientAuth = "enforced"
+)
+
+// Headscale represents the base app of the service.
+type Headscale struct {
+	cfg        *Config
+	db         *gorm.DB
+	dbString   string
+	dbType     string
+	dbDebug    bool
+	privateKey *key.MachinePrivate
+
+	DERPMap    *tailcfg.DERPMap
+	DERPServer *DERPServer
+
+	aclPolicy *ACLPolicy
+	aclRules  []tailcfg.FilterRule
+
+	lastStateChange *xsync.MapOf[time.Time]
+
+	oidcProvider *oidc.Provider
+	oauth2Config *oauth2.Config
+
+	registrationCache *cache.Cache
+
+	ipAllocationMutex sync.Mutex
+
+	shutdownChan       chan struct{}
+	pollNetMapStreamWG sync.WaitGroup
+}
+
+// Look up the TLS constant relative to user-supplied TLS client
+// authentication mode. If an unknown mode is supplied, the default
+// value, tls.RequireAnyClientCert, is returned. The returned boolean
+// indicates if the supplied mode was valid.
+func LookupTLSClientAuthMode(mode string) (tls.ClientAuthType, bool) {
+	switch mode {
+	case DisabledClientAuth:
+		// Client cert is _not_ required.
+		return tls.NoClientCert, true
+	case RelaxedClientAuth:
+		// Client cert required, but _not verified_.
+		return tls.RequireAnyClientCert, true
+	case EnforcedClientAuth:
+		// Client cert is _required and verified_.
+		return tls.RequireAndVerifyClientCert, true
+	default:
+		// Return the default when an unknown value is supplied.
+		return tls.RequireAnyClientCert, false
+	}
+}
+
+func NewHeadscale(cfg *Config) (*Headscale, error) {
+	privKey, err := readOrCreatePrivateKey(cfg.PrivateKeyPath)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read or create private key: %w", err)
+	}
+
+	var dbString string
+	switch cfg.DBtype {
+	case Postgres:
+		dbString = fmt.Sprintf(
+			"host=%s port=%d dbname=%s user=%s password=%s sslmode=disable",
+			cfg.DBhost,
+			cfg.DBport,
+			cfg.DBname,
+			cfg.DBuser,
+			cfg.DBpass,
+		)
+	case Sqlite:
+		dbString = cfg.DBpath
+	default:
+		return nil, errUnsupportedDatabase
+	}
+
+	registrationCache := cache.New(
+		registerCacheExpiration,
+		registerCacheCleanup,
+	)
+
+	app := Headscale{
+		cfg:                cfg,
+		dbType:             cfg.DBtype,
+		dbString:           dbString,
+		privateKey:         privKey,
+		aclRules:           tailcfg.FilterAllowAll, // default allowall
+		registrationCache:  registrationCache,
+		pollNetMapStreamWG: sync.WaitGroup{},
+	}
+
+	err = app.initDB()
+	if err != nil {
+		return nil, err
+	}
+
+	if cfg.OIDC.Issuer != "" {
+		err = app.initOIDC()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if app.cfg.DNSConfig != nil && app.cfg.DNSConfig.Proxied { // if MagicDNS
+		magicDNSDomains := generateMagicDNSRootDomains(app.cfg.IPPrefixes)
+		// we might have routes already from Split DNS
+		if app.cfg.DNSConfig.Routes == nil {
+			app.cfg.DNSConfig.Routes = make(map[string][]*dnstype.Resolver)
+		}
+		for _, d := range magicDNSDomains {
+			app.cfg.DNSConfig.Routes[d.WithoutTrailingDot()] = nil
+		}
+	}
+
+	if cfg.DERP.ServerEnabled {
+		embeddedDERPServer, err := app.NewDERPServer()
+		if err != nil {
+			return nil, err
+		}
+		app.DERPServer = embeddedDERPServer
+	}
+
+	return &app, nil
+}
+
+// Redirect to our TLS url.
+func (h *Headscale) redirect(w http.ResponseWriter, req *http.Request) {
+	target := h.cfg.ServerURL + req.URL.RequestURI()
+	http.Redirect(w, req, target, http.StatusFound)
+}
+
+// expireEphemeralNodes deletes ephemeral machine records that have not been
+// seen for longer than h.cfg.EphemeralNodeInactivityTimeout.
+func (h *Headscale) expireEphemeralNodes(milliSeconds int64) {
+	ticker := time.NewTicker(time.Duration(milliSeconds) * time.Millisecond)
+	for range ticker.C {
+		h.expireEphemeralNodesWorker()
+	}
+}
+
+func (h *Headscale) expireEphemeralNodesWorker() {
+	namespaces, err := h.ListNamespaces()
+	if err != nil {
+		log.Error().Err(err).Msg("Error listing namespaces")
+
+		return
+	}
+
+	for _, namespace := range namespaces {
+		machines, err := h.ListMachinesInNamespace(namespace.Name)
+		if err != nil {
+			log.Error().
+				Err(err).
+				Str("namespace", namespace.Name).
+				Msg("Error listing machines in namespace")
+
+			return
+		}
+
+		expiredFound := false
+		for _, machine := range machines {
+			if machine.AuthKey != nil && machine.LastSeen != nil &&
+				machine.AuthKey.Ephemeral &&
+				time.Now().
+					After(machine.LastSeen.Add(h.cfg.EphemeralNodeInactivityTimeout)) {
+				expiredFound = true
+				log.Info().
+					Str("machine", machine.Hostname).
+					Msg("Ephemeral client removed from database")
+
+				err = h.db.Unscoped().Delete(machine).Error
+				if err != nil {
+					log.Error().
+						Err(err).
+						Str("machine", machine.Hostname).
+						Msg("🤮 Cannot delete ephemeral machine from the database")
+				}
+			}
+		}
+
+		if expiredFound {
+			h.setLastStateChangeToNow(namespace.Name)
+		}
+	}
+}
+
+func (h *Headscale) grpcAuthenticationInterceptor(ctx context.Context,
+	req interface{},
+	info *grpc.UnaryServerInfo,
+	handler grpc.UnaryHandler,
+) (interface{}, error) {
+	// Check if the request is coming from the on-server client.
+	// This is not secure, but it is to maintain maintainability
+	// with the "legacy" database-based client
+	// It is also neede for grpc-gateway to be able to connect to
+	// the server
+	client, _ := peer.FromContext(ctx)
+
+	log.Trace().
+		Caller().
+		Str("client_address", client.Addr.String()).
+		Msg("Client is trying to authenticate")
+
+	meta, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		log.Error().
+			Caller().
+			Str("client_address", client.Addr.String()).
+			Msg("Retrieving metadata is failed")
+
+		return ctx, status.Errorf(
+			codes.InvalidArgument,
+			"Retrieving metadata is failed",
+		)
+	}
+
+	authHeader, ok := meta["authorization"]
+	if !ok {
+		log.Error().
+			Caller().
+			Str("client_address", client.Addr.String()).
+			Msg("Authorization token is not supplied")
+
+		return ctx, status.Errorf(
+			codes.Unauthenticated,
+			"Authorization token is not supplied",
+		)
+	}
+
+	token := authHeader[0]
+
+	if !strings.HasPrefix(token, AuthPrefix) {
+		log.Error().
+			Caller().
+			Str("client_address", client.Addr.String()).
+			Msg(`missing "Bearer " prefix in "Authorization" header`)
+
+		return ctx, status.Error(
+			codes.Unauthenticated,
+			`missing "Bearer " prefix in "Authorization" header`,
+		)
+	}
+
+	valid, err := h.ValidateAPIKey(strings.TrimPrefix(token, AuthPrefix))
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Str("client_address", client.Addr.String()).
+			Msg("failed to validate token")
+
+		return ctx, status.Error(codes.Internal, "failed to validate token")
+	}
+
+	if !valid {
+		log.Info().
+			Str("client_address", client.Addr.String()).
+			Msg("invalid token")
+
+		return ctx, status.Error(codes.Unauthenticated, "invalid token")
+	}
+
+	return handler(ctx, req)
+}
+
+func (h *Headscale) httpAuthenticationMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(
+		writer http.ResponseWriter,
+		req *http.Request,
+	) {
+		log.Trace().
+			Caller().
+			Str("client_address", req.RemoteAddr).
+			Msg("HTTP authentication invoked")
+
+		authHeader := req.Header.Get("authorization")
+
+		if !strings.HasPrefix(authHeader, AuthPrefix) {
+			log.Error().
+				Caller().
+				Str("client_address", req.RemoteAddr).
+				Msg(`missing "Bearer " prefix in "Authorization" header`)
+			writer.WriteHeader(http.StatusUnauthorized)
+			_, err := writer.Write([]byte("Unauthorized"))
+			if err != nil {
+				log.Error().
+					Caller().
+					Err(err).
+					Msg("Failed to write response")
+			}
+
+			return
+		}
+
+		valid, err := h.ValidateAPIKey(strings.TrimPrefix(authHeader, AuthPrefix))
+		if err != nil {
+			log.Error().
+				Caller().
+				Err(err).
+				Str("client_address", req.RemoteAddr).
+				Msg("failed to validate token")
+
+			writer.WriteHeader(http.StatusInternalServerError)
+			_, err := writer.Write([]byte("Unauthorized"))
+			if err != nil {
+				log.Error().
+					Caller().
+					Err(err).
+					Msg("Failed to write response")
+			}
+
+			return
+		}
+
+		if !valid {
+			log.Info().
+				Str("client_address", req.RemoteAddr).
+				Msg("invalid token")
+
+			writer.WriteHeader(http.StatusUnauthorized)
+			_, err := writer.Write([]byte("Unauthorized"))
+			if err != nil {
+				log.Error().
+					Caller().
+					Err(err).
+					Msg("Failed to write response")
+			}
+
+			return
+		}
+
+		next.ServeHTTP(writer, req)
+	})
+}
+
+// ensureUnixSocketIsAbsent will check if the given path for headscales unix socket is clear
+// and will remove it if it is not.
+func (h *Headscale) ensureUnixSocketIsAbsent() error {
+	// File does not exist, all fine
+	if _, err := os.Stat(h.cfg.UnixSocket); errors.Is(err, os.ErrNotExist) {
+		return nil
+	}
+
+	return os.Remove(h.cfg.UnixSocket)
+}
+
+func (h *Headscale) createRouter(grpcMux *runtime.ServeMux) *mux.Router {
+	router := mux.NewRouter()
+
+	router.HandleFunc("/health", h.HealthHandler).Methods(http.MethodGet)
+	router.HandleFunc("/key", h.KeyHandler).Methods(http.MethodGet)
+	router.HandleFunc("/register", h.RegisterWebAPI).Methods(http.MethodGet)
+	router.HandleFunc("/machine/{mkey}/map", h.PollNetMapHandler).Methods(http.MethodPost)
+	router.HandleFunc("/machine/{mkey}", h.RegistrationHandler).Methods(http.MethodPost)
+	router.HandleFunc("/oidc/register/{mkey}", h.RegisterOIDC).Methods(http.MethodGet)
+	router.HandleFunc("/oidc/callback", h.OIDCCallback).Methods(http.MethodGet)
+	router.HandleFunc("/apple", h.AppleConfigMessage).Methods(http.MethodGet)
+	router.HandleFunc("/apple/{platform}", h.ApplePlatformConfig).Methods(http.MethodGet)
+	router.HandleFunc("/windows", h.WindowsConfigMessage).Methods(http.MethodGet)
+	router.HandleFunc("/windows/tailscale.reg", h.WindowsRegConfig).Methods(http.MethodGet)
+	router.HandleFunc("/swagger", SwaggerUI).Methods(http.MethodGet)
+	router.HandleFunc("/swagger/v1/openapiv2.json", SwaggerAPIv1).Methods(http.MethodGet)
+
+	if h.cfg.DERP.ServerEnabled {
+		router.HandleFunc("/derp", h.DERPHandler)
+		router.HandleFunc("/derp/probe", h.DERPProbeHandler)
+		router.HandleFunc("/bootstrap-dns", h.DERPBootstrapDNSHandler)
+	}
+
+	apiRouter := router.PathPrefix("/api").Subrouter()
+	apiRouter.Use(h.httpAuthenticationMiddleware)
+	apiRouter.PathPrefix("/v1/").HandlerFunc(grpcMux.ServeHTTP)
+
+	router.PathPrefix("/").HandlerFunc(stdoutHandler)
+
+	return router
+}
+
+// Serve launches a GIN server with the Headscale API.
+func (h *Headscale) Serve() error {
+	var err error
+
+	// Fetch an initial DERP Map before we start serving
+	h.DERPMap = GetDERPMap(h.cfg.DERP)
+
+	if h.cfg.DERP.ServerEnabled {
+		// When embedded DERP is enabled we always need a STUN server
+		if h.cfg.DERP.STUNAddr == "" {
+			return errSTUNAddressNotSet
+		}
+
+		h.DERPMap.Regions[h.DERPServer.region.RegionID] = &h.DERPServer.region
+		go h.ServeSTUN()
+	}
+
+	if h.cfg.DERP.AutoUpdate {
+		derpMapCancelChannel := make(chan struct{})
+		defer func() { derpMapCancelChannel <- struct{}{} }()
+		go h.scheduledDERPMapUpdateWorker(derpMapCancelChannel)
+	}
+
+	go h.expireEphemeralNodes(updateInterval)
+
+	if zl.GlobalLevel() == zl.TraceLevel {
+		zerolog.RespLog = true
+	} else {
+		zerolog.RespLog = false
+	}
+
+	// Prepare group for running listeners
+	errorGroup := new(errgroup.Group)
+
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	//
+	//
+	// Set up LOCAL listeners
+	//
+
+	err = h.ensureUnixSocketIsAbsent()
+	if err != nil {
+		return fmt.Errorf("unable to remove old socket file: %w", err)
+	}
+
+	socketListener, err := net.Listen("unix", h.cfg.UnixSocket)
+	if err != nil {
+		return fmt.Errorf("failed to set up gRPC socket: %w", err)
+	}
+
+	// Change socket permissions
+	if err := os.Chmod(h.cfg.UnixSocket, h.cfg.UnixSocketPermission); err != nil {
+		return fmt.Errorf("failed change permission of gRPC socket: %w", err)
+	}
+
+	grpcGatewayMux := runtime.NewServeMux()
+
+	// Make the grpc-gateway connect to grpc over socket
+	grpcGatewayConn, err := grpc.Dial(
+		h.cfg.UnixSocket,
+		[]grpc.DialOption{
+			grpc.WithTransportCredentials(insecure.NewCredentials()),
+			grpc.WithContextDialer(GrpcSocketDialer),
+		}...,
+	)
+	if err != nil {
+		return err
+	}
+
+	// Connect to the gRPC server over localhost to skip
+	// the authentication.
+	err = v1.RegisterHeadscaleServiceHandler(ctx, grpcGatewayMux, grpcGatewayConn)
+	if err != nil {
+		return err
+	}
+
+	// Start the local gRPC server without TLS and without authentication
+	grpcSocket := grpc.NewServer(zerolog.UnaryInterceptor())
+
+	v1.RegisterHeadscaleServiceServer(grpcSocket, newHeadscaleV1APIServer(h))
+	reflection.Register(grpcSocket)
+
+	errorGroup.Go(func() error { return grpcSocket.Serve(socketListener) })
+
+	//
+	//
+	// Set up REMOTE listeners
+	//
+
+	tlsConfig, err := h.getTLSSettings()
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to set up TLS configuration")
+
+		return err
+	}
+
+	//
+	//
+	// gRPC setup
+	//
+
+	// We are sadly not able to run gRPC and HTTPS (2.0) on the same
+	// port because the connection mux does not support matching them
+	// since they are so similar. There is multiple issues open and we
+	// can revisit this if changes:
+	// https://github.com/soheilhy/cmux/issues/68
+	// https://github.com/soheilhy/cmux/issues/91
+
+	var grpcServer *grpc.Server
+	var grpcListener net.Listener
+	if tlsConfig != nil || h.cfg.GRPCAllowInsecure {
+		log.Info().Msgf("Enabling remote gRPC at %s", h.cfg.GRPCAddr)
+
+		grpcOptions := []grpc.ServerOption{
+			grpc.UnaryInterceptor(
+				grpc_middleware.ChainUnaryServer(
+					h.grpcAuthenticationInterceptor,
+					zerolog.NewUnaryServerInterceptor(),
+				),
+			),
+		}
+
+		if tlsConfig != nil {
+			grpcOptions = append(grpcOptions,
+				grpc.Creds(credentials.NewTLS(tlsConfig)),
+			)
+		} else {
+			log.Warn().Msg("gRPC is running without security")
+		}
+
+		grpcServer = grpc.NewServer(grpcOptions...)
+
+		v1.RegisterHeadscaleServiceServer(grpcServer, newHeadscaleV1APIServer(h))
+		reflection.Register(grpcServer)
+
+		grpcListener, err = net.Listen("tcp", h.cfg.GRPCAddr)
+		if err != nil {
+			return fmt.Errorf("failed to bind to TCP address: %w", err)
+		}
+
+		errorGroup.Go(func() error { return grpcServer.Serve(grpcListener) })
+
+		log.Info().
+			Msgf("listening and serving gRPC on: %s", h.cfg.GRPCAddr)
+	}
+
+	//
+	//
+	// HTTP setup
+	//
+
+	router := h.createRouter(grpcGatewayMux)
+
+	httpServer := &http.Server{
+		Addr:        h.cfg.Addr,
+		Handler:     router,
+		ReadTimeout: HTTPReadTimeout,
+		// Go does not handle timeouts in HTTP very well, and there is
+		// no good way to handle streaming timeouts, therefore we need to
+		// keep this at unlimited and be careful to clean up connections
+		// https://blog.cloudflare.com/the-complete-guide-to-golang-net-http-timeouts/#aboutstreaming
+		WriteTimeout: 0,
+	}
+
+	var httpListener net.Listener
+	if tlsConfig != nil {
+		httpServer.TLSConfig = tlsConfig
+		httpListener, err = tls.Listen("tcp", h.cfg.Addr, tlsConfig)
+	} else {
+		httpListener, err = net.Listen("tcp", h.cfg.Addr)
+	}
+	if err != nil {
+		return fmt.Errorf("failed to bind to TCP address: %w", err)
+	}
+
+	errorGroup.Go(func() error { return httpServer.Serve(httpListener) })
+
+	log.Info().
+		Msgf("listening and serving HTTP on: %s", h.cfg.Addr)
+
+	promMux := http.NewServeMux()
+	promMux.Handle("/metrics", promhttp.Handler())
+
+	promHTTPServer := &http.Server{
+		Addr:         h.cfg.MetricsAddr,
+		Handler:      promMux,
+		ReadTimeout:  HTTPReadTimeout,
+		WriteTimeout: 0,
+	}
+
+	var promHTTPListener net.Listener
+	promHTTPListener, err = net.Listen("tcp", h.cfg.MetricsAddr)
+
+	if err != nil {
+		return fmt.Errorf("failed to bind to TCP address: %w", err)
+	}
+
+	errorGroup.Go(func() error { return promHTTPServer.Serve(promHTTPListener) })
+
+	log.Info().
+		Msgf("listening and serving metrics on: %s", h.cfg.MetricsAddr)
+
+	// Handle common process-killing signals so we can gracefully shut down:
+	h.shutdownChan = make(chan struct{})
+	sigc := make(chan os.Signal, 1)
+	signal.Notify(sigc,
+		syscall.SIGHUP,
+		syscall.SIGINT,
+		syscall.SIGTERM,
+		syscall.SIGQUIT,
+		syscall.SIGHUP)
+	sigFunc := func(c chan os.Signal) {
+		// Wait for a SIGINT or SIGKILL:
+		for {
+			sig := <-c
+			switch sig {
+			case syscall.SIGHUP:
+				log.Info().
+					Str("signal", sig.String()).
+					Msg("Received SIGHUP, reloading ACL and Config")
+
+				// TODO(kradalby): Reload config on SIGHUP
+
+				if h.cfg.ACL.PolicyPath != "" {
+					aclPath := AbsolutePathFromConfigPath(h.cfg.ACL.PolicyPath)
+					err := h.LoadACLPolicy(aclPath)
+					if err != nil {
+						log.Error().Err(err).Msg("Failed to reload ACL policy")
+					}
+					log.Info().
+						Str("path", aclPath).
+						Msg("ACL policy successfully reloaded, notifying nodes of change")
+
+					h.setLastStateChangeToNow()
+				}
+
+			default:
+				log.Info().
+					Str("signal", sig.String()).
+					Msg("Received signal to stop, shutting down gracefully")
+
+				close(h.shutdownChan)
+				h.pollNetMapStreamWG.Wait()
+
+				// Gracefully shut down servers
+				ctx, cancel := context.WithTimeout(context.Background(), HTTPShutdownTimeout)
+				if err := promHTTPServer.Shutdown(ctx); err != nil {
+					log.Error().Err(err).Msg("Failed to shutdown prometheus http")
+				}
+				if err := httpServer.Shutdown(ctx); err != nil {
+					log.Error().Err(err).Msg("Failed to shutdown http")
+				}
+				grpcSocket.GracefulStop()
+
+				if grpcServer != nil {
+					grpcServer.GracefulStop()
+					grpcListener.Close()
+				}
+
+				// Close network listeners
+				promHTTPListener.Close()
+				httpListener.Close()
+				grpcGatewayConn.Close()
+
+				// Stop listening (and unlink the socket if unix type):
+				socketListener.Close()
+
+				// Close db connections
+				db, err := h.db.DB()
+				if err != nil {
+					log.Error().Err(err).Msg("Failed to get db handle")
+				}
+				err = db.Close()
+				if err != nil {
+					log.Error().Err(err).Msg("Failed to close db")
+				}
+
+				log.Info().
+					Msg("Headscale stopped")
+
+				// And we're done:
+				cancel()
+				os.Exit(0)
+			}
+		}
+	}
+	errorGroup.Go(func() error {
+		sigFunc(sigc)
+
+		return nil
+	})
+
+	return errorGroup.Wait()
+}
+
+func (h *Headscale) getTLSSettings() (*tls.Config, error) {
+	var err error
+	if h.cfg.TLS.LetsEncrypt.Hostname != "" {
+		if !strings.HasPrefix(h.cfg.ServerURL, "https://") {
+			log.Warn().
+				Msg("Listening with TLS but ServerURL does not start with https://")
+		}
+
+		certManager := autocert.Manager{
+			Prompt:     autocert.AcceptTOS,
+			HostPolicy: autocert.HostWhitelist(h.cfg.TLS.LetsEncrypt.Hostname),
+			Cache:      autocert.DirCache(h.cfg.TLS.LetsEncrypt.CacheDir),
+			Client: &acme.Client{
+				DirectoryURL: h.cfg.ACMEURL,
+			},
+			Email: h.cfg.ACMEEmail,
+		}
+
+		switch h.cfg.TLS.LetsEncrypt.ChallengeType {
+		case tlsALPN01ChallengeType:
+			// Configuration via autocert with TLS-ALPN-01 (https://tools.ietf.org/html/rfc8737)
+			// The RFC requires that the validation is done on port 443; in other words, headscale
+			// must be reachable on port 443.
+			return certManager.TLSConfig(), nil
+
+		case http01ChallengeType:
+			// Configuration via autocert with HTTP-01. This requires listening on
+			// port 80 for the certificate validation in addition to the headscale
+			// service, which can be configured to run on any other port.
+			go func() {
+				log.Fatal().
+					Caller().
+					Err(http.ListenAndServe(h.cfg.TLS.LetsEncrypt.Listen, certManager.HTTPHandler(http.HandlerFunc(h.redirect)))).
+					Msg("failed to set up a HTTP server")
+			}()
+
+			return certManager.TLSConfig(), nil
+
+		default:
+			return nil, errUnsupportedLetsEncryptChallengeType
+		}
+	} else if h.cfg.TLS.CertPath == "" {
+		if !strings.HasPrefix(h.cfg.ServerURL, "http://") {
+			log.Warn().Msg("Listening without TLS but ServerURL does not start with http://")
+		}
+
+		return nil, err
+	} else {
+		if !strings.HasPrefix(h.cfg.ServerURL, "https://") {
+			log.Warn().Msg("Listening with TLS but ServerURL does not start with https://")
+		}
+
+		log.Info().Msg(fmt.Sprintf(
+			"Client authentication (mTLS) is \"%s\". See the docs to learn about configuring this setting.",
+			h.cfg.TLS.ClientAuthMode))
+
+		tlsConfig := &tls.Config{
+			ClientAuth:   h.cfg.TLS.ClientAuthMode,
+			NextProtos:   []string{"http/1.1"},
+			Certificates: make([]tls.Certificate, 1),
+			MinVersion:   tls.VersionTLS12,
+		}
+
+		tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(h.cfg.TLS.CertPath, h.cfg.TLS.KeyPath)
+
+		return tlsConfig, err
+	}
+}
+
+func (h *Headscale) setLastStateChangeToNow(namespaces ...string) {
+	var err error
+
+	now := time.Now().UTC()
+
+	if len(namespaces) == 0 {
+		namespaces, err = h.ListNamespacesStr()
+		if err != nil {
+			log.Error().Caller().Err(err).Msg("failed to fetch all namespaces, failing to update last changed state.")
+		}
+	}
+
+	for _, namespace := range namespaces {
+		lastStateUpdate.WithLabelValues(namespace, "headscale").Set(float64(now.Unix()))
+		if h.lastStateChange == nil {
+			h.lastStateChange = xsync.NewMapOf[time.Time]()
+		}
+		h.lastStateChange.Store(namespace, now)
+	}
+}
+
+func (h *Headscale) getLastStateChange(namespaces ...string) time.Time {
+	times := []time.Time{}
+
+	// getLastStateChange takes a list of namespaces as a "filter", if no namespaces
+	// are past, then use the entier list of namespaces and look for the last update
+	if len(namespaces) > 0 {
+		for _, namespace := range namespaces {
+			if lastChange, ok := h.lastStateChange.Load(namespace); ok {
+				times = append(times, lastChange)
+			}
+		}
+	} else {
+		h.lastStateChange.Range(func(key string, value time.Time) bool {
+			times = append(times, value)
+
+			return true
+		})
+	}
+
+	sort.Slice(times, func(i, j int) bool {
+		return times[i].After(times[j])
+	})
+
+	log.Trace().Msgf("Latest times %#v", times)
+
+	if len(times) == 0 {
+		return time.Now().UTC()
+	} else {
+		return times[0]
+	}
+}
+
+func stdoutHandler(
+	writer http.ResponseWriter,
+	req *http.Request,
+) {
+	body, _ := io.ReadAll(req.Body)
+
+	log.Trace().
+		Interface("header", req.Header).
+		Interface("proto", req.Proto).
+		Interface("url", req.URL).
+		Bytes("body", body).
+		Msg("Request did not match")
+}
+
+func readOrCreatePrivateKey(path string) (*key.MachinePrivate, error) {
+	privateKey, err := os.ReadFile(path)
+	if errors.Is(err, os.ErrNotExist) {
+		log.Info().Str("path", path).Msg("No private key file at path, creating...")
+
+		machineKey := key.NewMachine()
+
+		machineKeyStr, err := machineKey.MarshalText()
+		if err != nil {
+			return nil, fmt.Errorf(
+				"failed to convert private key to string for saving: %w",
+				err,
+			)
+		}
+		err = os.WriteFile(path, machineKeyStr, privateKeyFileMode)
+		if err != nil {
+			return nil, fmt.Errorf(
+				"failed to save private key to disk: %w",
+				err,
+			)
+		}
+
+		return &machineKey, nil
+	} else if err != nil {
+		return nil, fmt.Errorf("failed to read private key file: %w", err)
+	}
+
+	trimmedPrivateKey := strings.TrimSpace(string(privateKey))
+	privateKeyEnsurePrefix := PrivateKeyEnsurePrefix(trimmedPrivateKey)
+
+	var machineKey key.MachinePrivate
+	if err = machineKey.UnmarshalText([]byte(privateKeyEnsurePrefix)); err != nil {
+		log.Info().
+			Str("path", path).
+			Msg("This might be due to a legacy (headscale pre-0.12) private key. " +
+				"If the key is in WireGuard format, delete the key and restart headscale. " +
+				"A new key will automatically be generated. All Tailscale clients will have to be restarted")
+
+		return nil, fmt.Errorf("failed to parse private key: %w", err)
+	}
+
+	return &machineKey, nil
+}

app_test.go

@@ -0,0 +1,79 @@
+package headscale
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"gopkg.in/check.v1"
+	"inet.af/netaddr"
+)
+
+func Test(t *testing.T) {
+	check.TestingT(t)
+}
+
+var _ = check.Suite(&Suite{})
+
+type Suite struct{}
+
+var (
+	tmpDir string
+	app    Headscale
+)
+
+func (s *Suite) SetUpTest(c *check.C) {
+	s.ResetDB(c)
+}
+
+func (s *Suite) TearDownTest(c *check.C) {
+	os.RemoveAll(tmpDir)
+}
+
+func (s *Suite) ResetDB(c *check.C) {
+	if len(tmpDir) != 0 {
+		os.RemoveAll(tmpDir)
+	}
+	var err error
+	tmpDir, err = ioutil.TempDir("", "autoygg-client-test")
+	if err != nil {
+		c.Fatal(err)
+	}
+	cfg := Config{
+		IPPrefixes: []netaddr.IPPrefix{
+			netaddr.MustParseIPPrefix("10.27.0.0/23"),
+		},
+	}
+
+	app = Headscale{
+		cfg:      &cfg,
+		dbType:   "sqlite3",
+		dbString: tmpDir + "/headscale_test.db",
+	}
+	err = app.initDB()
+	if err != nil {
+		c.Fatal(err)
+	}
+	db, err := app.openDB()
+	if err != nil {
+		c.Fatal(err)
+	}
+	app.db = db
+}
+
+// Enusre an error is returned when an invalid auth mode
+// is supplied.
+func (s *Suite) TestInvalidClientAuthMode(c *check.C) {
+	_, isValid := LookupTLSClientAuthMode("invalid")
+	c.Assert(isValid, check.Equals, false)
+}
+
+// Ensure that all client auth modes return a nil error.
+func (s *Suite) TestAuthModes(c *check.C) {
+	modes := []string{"disabled", "relaxed", "enforced"}
+
+	for _, v := range modes {
+		_, isValid := LookupTLSClientAuthMode(v)
+		c.Assert(isValid, check.Equals, true)
+	}
+}

cmd/headscale/cli/api_key.go

@@ -5,8 +5,8 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/juanfont/headscale"
 	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
-	"github.com/juanfont/headscale/hscontrol/util"
 	"github.com/prometheus/common/model"
 	"github.com/pterm/pterm"
 	"github.com/rs/zerolog/log"
@@ -29,16 +29,11 @@ func init() {
 	apiKeysCmd.AddCommand(createAPIKeyCmd)
 
 	expireAPIKeyCmd.Flags().StringP("prefix", "p", "", "ApiKey prefix")
-	if err := expireAPIKeyCmd.MarkFlagRequired("prefix"); err != nil {
+	err := expireAPIKeyCmd.MarkFlagRequired("prefix")
+	if err != nil {
 		log.Fatal().Err(err).Msg("")
 	}
 	apiKeysCmd.AddCommand(expireAPIKeyCmd)
-
-	deleteAPIKeyCmd.Flags().StringP("prefix", "p", "", "ApiKey prefix")
-	if err := deleteAPIKeyCmd.MarkFlagRequired("prefix"); err != nil {
-		log.Fatal().Err(err).Msg("")
-	}
-	apiKeysCmd.AddCommand(deleteAPIKeyCmd)
 }
 
 var apiKeysCmd = &cobra.Command{
@@ -54,7 +49,7 @@ var listAPIKeys = &cobra.Command{
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -67,24 +62,28 @@ var listAPIKeys = &cobra.Command{
 				fmt.Sprintf("Error getting the list of keys: %s", err),
 				output,
 			)
+
+			return
 		}
 
 		if output != "" {
-			SuccessOutput(response.GetApiKeys(), "", output)
+			SuccessOutput(response.ApiKeys, "", output)
+
+			return
 		}
 
 		tableData := pterm.TableData{
 			{"ID", "Prefix", "Expiration", "Created"},
 		}
-		for _, key := range response.GetApiKeys() {
+		for _, key := range response.ApiKeys {
 			expiration := "-"
 
 			if key.GetExpiration() != nil {
-				expiration = ColourTime(key.GetExpiration().AsTime())
+				expiration = ColourTime(key.Expiration.AsTime())
 			}
 
 			tableData = append(tableData, []string{
-				strconv.FormatUint(key.GetId(), util.Base10),
+				strconv.FormatUint(key.GetId(), headscale.Base10),
 				key.GetPrefix(),
 				expiration,
 				key.GetCreatedAt().AsTime().Format(HeadscaleDateTimeFormat),
@@ -98,6 +97,8 @@ var listAPIKeys = &cobra.Command{
 				fmt.Sprintf("Failed to render pterm table: %s", err),
 				output,
 			)
+
+			return
 		}
 	},
 }
@@ -113,6 +114,9 @@ If you loose a key, create a new one and revoke (expire) the old one.`,
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
 
+		log.Trace().
+			Msg("Preparing to create ApiKey")
+
 		request := &v1.CreateApiKeyRequest{}
 
 		durationStr, _ := cmd.Flags().GetString("expiration")
@@ -124,13 +128,17 @@ If you loose a key, create a new one and revoke (expire) the old one.`,
 				fmt.Sprintf("Could not parse duration: %s\n", err),
 				output,
 			)
+
+			return
 		}
 
 		expiration := time.Now().UTC().Add(time.Duration(duration))
 
+		log.Trace().Dur("expiration", time.Duration(duration)).Msg("expiration has been set")
+
 		request.Expiration = timestamppb.New(expiration)
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -141,9 +149,11 @@ If you loose a key, create a new one and revoke (expire) the old one.`,
 				fmt.Sprintf("Cannot create Api Key: %s\n", err),
 				output,
 			)
+
+			return
 		}
 
-		SuccessOutput(response.GetApiKey(), response.GetApiKey(), output)
+		SuccessOutput(response.ApiKey, response.ApiKey, output)
 	},
 }
 
@@ -161,9 +171,11 @@ var expireAPIKeyCmd = &cobra.Command{
 				fmt.Sprintf("Error getting prefix from CLI flag: %s", err),
 				output,
 			)
+
+			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -178,45 +190,10 @@ var expireAPIKeyCmd = &cobra.Command{
 				fmt.Sprintf("Cannot expire Api Key: %s\n", err),
 				output,
 			)
+
+			return
 		}
 
 		SuccessOutput(response, "Key expired", output)
 	},
 }
-
-var deleteAPIKeyCmd = &cobra.Command{
-	Use:     "delete",
-	Short:   "Delete an ApiKey",
-	Aliases: []string{"remove", "del"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-
-		prefix, err := cmd.Flags().GetString("prefix")
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error getting prefix from CLI flag: %s", err),
-				output,
-			)
-		}
-
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		request := &v1.DeleteApiKeyRequest{
-			Prefix: prefix,
-		}
-
-		response, err := client.DeleteApiKey(ctx, request)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Cannot delete Api Key: %s\n", err),
-				output,
-			)
-		}
-
-		SuccessOutput(response, "Key deleted", output)
-	},
-}

cmd/headscale/cli/configtest.go

@@ -1,22 +0,0 @@
-package cli
-
-import (
-	"github.com/rs/zerolog/log"
-	"github.com/spf13/cobra"
-)
-
-func init() {
-	rootCmd.AddCommand(configTestCmd)
-}
-
-var configTestCmd = &cobra.Command{
-	Use:   "configtest",
-	Short: "Test the configuration.",
-	Long:  "Run a test of the configuration and exit.",
-	Run: func(cmd *cobra.Command, args []string) {
-		_, err := newHeadscaleServerWithConfig()
-		if err != nil {
-			log.Fatal().Caller().Err(err).Msg("Error initializing")
-		}
-	},
-}

cmd/headscale/cli/debug.go

@@ -4,14 +4,14 @@ import (
 	"fmt"
 
 	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
-	"github.com/juanfont/headscale/hscontrol/types"
 	"github.com/rs/zerolog/log"
 	"github.com/spf13/cobra"
 	"google.golang.org/grpc/status"
 )
 
 const (
-	errPreAuthKeyMalformed = Error("key is malformed. expected 64 hex characters with `nodekey` prefix")
+	keyLength             = 64
+	errPreAuthKeyTooShort = Error("key too short, must be 64 hexadecimal characters")
 )
 
 // Error is used to compare errors as per https://dave.cheney.net/2016/04/07/constant-errors
@@ -27,14 +27,8 @@ func init() {
 	if err != nil {
 		log.Fatal().Err(err).Msg("")
 	}
-	createNodeCmd.Flags().StringP("user", "u", "", "User")
-
-	createNodeCmd.Flags().StringP("namespace", "n", "", "User")
-	createNodeNamespaceFlag := createNodeCmd.Flags().Lookup("namespace")
-	createNodeNamespaceFlag.Deprecated = deprecateNamespaceMessage
-	createNodeNamespaceFlag.Hidden = true
-
-	err = createNodeCmd.MarkFlagRequired("user")
+	createNodeCmd.Flags().StringP("namespace", "n", "", "Namespace")
+	err = createNodeCmd.MarkFlagRequired("namespace")
 	if err != nil {
 		log.Fatal().Err(err).Msg("")
 	}
@@ -57,16 +51,18 @@ var debugCmd = &cobra.Command{
 
 var createNodeCmd = &cobra.Command{
 	Use:   "create-node",
-	Short: "Create a node that can be registered with `nodes register <>` command",
+	Short: "Create a node (machine) that can be registered with `nodes register <>` command",
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
 
-		user, err := cmd.Flags().GetString("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+
+			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -77,24 +73,29 @@ var createNodeCmd = &cobra.Command{
 				fmt.Sprintf("Error getting node from flag: %s", err),
 				output,
 			)
+
+			return
 		}
 
-		registrationID, err := cmd.Flags().GetString("key")
+		machineKey, err := cmd.Flags().GetString("key")
 		if err != nil {
 			ErrorOutput(
 				err,
 				fmt.Sprintf("Error getting key from flag: %s", err),
 				output,
 			)
-		}
 
-		_, err = types.RegistrationIDFromString(registrationID)
-		if err != nil {
+			return
+		}
+		if len(machineKey) != keyLength {
+			err = errPreAuthKeyTooShort
 			ErrorOutput(
 				err,
-				fmt.Sprintf("Failed to parse machine key from flag: %s", err),
+				fmt.Sprintf("Error: %s", err),
 				output,
 			)
+
+			return
 		}
 
 		routes, err := cmd.Flags().GetStringSlice("route")
@@ -104,24 +105,28 @@ var createNodeCmd = &cobra.Command{
 				fmt.Sprintf("Error getting routes from flag: %s", err),
 				output,
 			)
+
+			return
 		}
 
-		request := &v1.DebugCreateNodeRequest{
-			Key:    registrationID,
-			Name:   name,
-			User:   user,
-			Routes: routes,
+		request := &v1.DebugCreateMachineRequest{
+			Key:       machineKey,
+			Name:      name,
+			Namespace: namespace,
+			Routes:    routes,
 		}
 
-		response, err := client.DebugCreateNode(ctx, request)
+		response, err := client.DebugCreateMachine(ctx, request)
 		if err != nil {
 			ErrorOutput(
 				err,
-				fmt.Sprintf("Cannot create node: %s", status.Convert(err).Message()),
+				fmt.Sprintf("Cannot create machine: %s", status.Convert(err).Message()),
 				output,
 			)
+
+			return
 		}
 
-		SuccessOutput(response.GetNode(), "Node created", output)
+		SuccessOutput(response.Machine, "Machine created", output)
 	},
 }

cmd/headscale/cli/mockoidc.go

@@ -1,146 +0,0 @@
-package cli
-
-import (
-	"encoding/json"
-	"fmt"
-	"net"
-	"net/http"
-	"os"
-	"strconv"
-	"time"
-
-	"github.com/oauth2-proxy/mockoidc"
-	"github.com/rs/zerolog/log"
-	"github.com/spf13/cobra"
-)
-
-const (
-	errMockOidcClientIDNotDefined     = Error("MOCKOIDC_CLIENT_ID not defined")
-	errMockOidcClientSecretNotDefined = Error("MOCKOIDC_CLIENT_SECRET not defined")
-	errMockOidcPortNotDefined         = Error("MOCKOIDC_PORT not defined")
-	refreshTTL                        = 60 * time.Minute
-)
-
-var accessTTL = 2 * time.Minute
-
-func init() {
-	rootCmd.AddCommand(mockOidcCmd)
-}
-
-var mockOidcCmd = &cobra.Command{
-	Use:   "mockoidc",
-	Short: "Runs a mock OIDC server for testing",
-	Long:  "This internal command runs a OpenID Connect for testing purposes",
-	Run: func(cmd *cobra.Command, args []string) {
-		err := mockOIDC()
-		if err != nil {
-			log.Error().Err(err).Msgf("Error running mock OIDC server")
-			os.Exit(1)
-		}
-	},
-}
-
-func mockOIDC() error {
-	clientID := os.Getenv("MOCKOIDC_CLIENT_ID")
-	if clientID == "" {
-		return errMockOidcClientIDNotDefined
-	}
-	clientSecret := os.Getenv("MOCKOIDC_CLIENT_SECRET")
-	if clientSecret == "" {
-		return errMockOidcClientSecretNotDefined
-	}
-	addrStr := os.Getenv("MOCKOIDC_ADDR")
-	if addrStr == "" {
-		return errMockOidcPortNotDefined
-	}
-	portStr := os.Getenv("MOCKOIDC_PORT")
-	if portStr == "" {
-		return errMockOidcPortNotDefined
-	}
-	accessTTLOverride := os.Getenv("MOCKOIDC_ACCESS_TTL")
-	if accessTTLOverride != "" {
-		newTTL, err := time.ParseDuration(accessTTLOverride)
-		if err != nil {
-			return err
-		}
-		accessTTL = newTTL
-	}
-
-	userStr := os.Getenv("MOCKOIDC_USERS")
-	if userStr == "" {
-		return fmt.Errorf("MOCKOIDC_USERS not defined")
-	}
-
-	var users []mockoidc.MockUser
-	err := json.Unmarshal([]byte(userStr), &users)
-	if err != nil {
-		return fmt.Errorf("unmarshalling users: %w", err)
-	}
-
-	log.Info().Interface("users", users).Msg("loading users from JSON")
-
-	log.Info().Msgf("Access token TTL: %s", accessTTL)
-
-	port, err := strconv.Atoi(portStr)
-	if err != nil {
-		return err
-	}
-
-	mock, err := getMockOIDC(clientID, clientSecret, users)
-	if err != nil {
-		return err
-	}
-
-	listener, err := net.Listen("tcp", fmt.Sprintf("%s:%d", addrStr, port))
-	if err != nil {
-		return err
-	}
-
-	err = mock.Start(listener, nil)
-	if err != nil {
-		return err
-	}
-	log.Info().Msgf("Mock OIDC server listening on %s", listener.Addr().String())
-	log.Info().Msgf("Issuer: %s", mock.Issuer())
-	c := make(chan struct{})
-	<-c
-
-	return nil
-}
-
-func getMockOIDC(clientID string, clientSecret string, users []mockoidc.MockUser) (*mockoidc.MockOIDC, error) {
-	keypair, err := mockoidc.NewKeypair(nil)
-	if err != nil {
-		return nil, err
-	}
-
-	userQueue := mockoidc.UserQueue{}
-
-	for _, user := range users {
-		userQueue.Push(&user)
-	}
-
-	mock := mockoidc.MockOIDC{
-		ClientID:                      clientID,
-		ClientSecret:                  clientSecret,
-		AccessTTL:                     accessTTL,
-		RefreshTTL:                    refreshTTL,
-		CodeChallengeMethodsSupported: []string{"plain", "S256"},
-		Keypair:                       keypair,
-		SessionStore:                  mockoidc.NewSessionStore(),
-		UserQueue:                     &userQueue,
-		ErrorQueue:                    &mockoidc.ErrorQueue{},
-	}
-
-	mock.AddMiddleware(func(h http.Handler) http.Handler {
-		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			log.Info().Msgf("Request: %+v", r)
-			h.ServeHTTP(w, r)
-			if r.Response != nil {
-				log.Info().Msgf("Response: %+v", r.Response)
-			}
-		})
-	})
-
-	return &mock, nil
-}

cmd/headscale/cli/namespaces.go

@@ -0,0 +1,243 @@
+package cli
+
+import (
+	"fmt"
+
+	survey "github.com/AlecAivazis/survey/v2"
+	"github.com/juanfont/headscale"
+	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
+	"github.com/pterm/pterm"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+)
+
+func init() {
+	rootCmd.AddCommand(namespaceCmd)
+	namespaceCmd.AddCommand(createNamespaceCmd)
+	namespaceCmd.AddCommand(listNamespacesCmd)
+	namespaceCmd.AddCommand(destroyNamespaceCmd)
+	namespaceCmd.AddCommand(renameNamespaceCmd)
+}
+
+const (
+	errMissingParameter = headscale.Error("missing parameters")
+)
+
+var namespaceCmd = &cobra.Command{
+	Use:     "namespaces",
+	Short:   "Manage the namespaces of Headscale",
+	Aliases: []string{"namespace", "ns", "user", "users"},
+}
+
+var createNamespaceCmd = &cobra.Command{
+	Use:     "create NAME",
+	Short:   "Creates a new namespace",
+	Aliases: []string{"c", "new"},
+	Args: func(cmd *cobra.Command, args []string) error {
+		if len(args) < 1 {
+			return errMissingParameter
+		}
+
+		return nil
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		namespaceName := args[0]
+
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
+		defer cancel()
+		defer conn.Close()
+
+		log.Trace().Interface("client", client).Msg("Obtained gRPC client")
+
+		request := &v1.CreateNamespaceRequest{Name: namespaceName}
+
+		log.Trace().Interface("request", request).Msg("Sending CreateNamespace request")
+		response, err := client.CreateNamespace(ctx, request)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf(
+					"Cannot create namespace: %s",
+					status.Convert(err).Message(),
+				),
+				output,
+			)
+
+			return
+		}
+
+		SuccessOutput(response.Namespace, "Namespace created", output)
+	},
+}
+
+var destroyNamespaceCmd = &cobra.Command{
+	Use:     "destroy NAME",
+	Short:   "Destroys a namespace",
+	Aliases: []string{"delete"},
+	Args: func(cmd *cobra.Command, args []string) error {
+		if len(args) < 1 {
+			return errMissingParameter
+		}
+
+		return nil
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		namespaceName := args[0]
+
+		request := &v1.GetNamespaceRequest{
+			Name: namespaceName,
+		}
+
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
+		defer cancel()
+		defer conn.Close()
+
+		_, err := client.GetNamespace(ctx, request)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Error: %s", status.Convert(err).Message()),
+				output,
+			)
+
+			return
+		}
+
+		confirm := false
+		force, _ := cmd.Flags().GetBool("force")
+		if !force {
+			prompt := &survey.Confirm{
+				Message: fmt.Sprintf(
+					"Do you want to remove the namespace '%s' and any associated preauthkeys?",
+					namespaceName,
+				),
+			}
+			err := survey.AskOne(prompt, &confirm)
+			if err != nil {
+				return
+			}
+		}
+
+		if confirm || force {
+			request := &v1.DeleteNamespaceRequest{Name: namespaceName}
+
+			response, err := client.DeleteNamespace(ctx, request)
+			if err != nil {
+				ErrorOutput(
+					err,
+					fmt.Sprintf(
+						"Cannot destroy namespace: %s",
+						status.Convert(err).Message(),
+					),
+					output,
+				)
+
+				return
+			}
+			SuccessOutput(response, "Namespace destroyed", output)
+		} else {
+			SuccessOutput(map[string]string{"Result": "Namespace not destroyed"}, "Namespace not destroyed", output)
+		}
+	},
+}
+
+var listNamespacesCmd = &cobra.Command{
+	Use:     "list",
+	Short:   "List all the namespaces",
+	Aliases: []string{"ls", "show"},
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
+		defer cancel()
+		defer conn.Close()
+
+		request := &v1.ListNamespacesRequest{}
+
+		response, err := client.ListNamespaces(ctx, request)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Cannot get namespaces: %s", status.Convert(err).Message()),
+				output,
+			)
+
+			return
+		}
+
+		if output != "" {
+			SuccessOutput(response.Namespaces, "", output)
+
+			return
+		}
+
+		tableData := pterm.TableData{{"ID", "Name", "Created"}}
+		for _, namespace := range response.GetNamespaces() {
+			tableData = append(
+				tableData,
+				[]string{
+					namespace.GetId(),
+					namespace.GetName(),
+					namespace.GetCreatedAt().AsTime().Format("2006-01-02 15:04:05"),
+				},
+			)
+		}
+		err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Failed to render pterm table: %s", err),
+				output,
+			)
+
+			return
+		}
+	},
+}
+
+var renameNamespaceCmd = &cobra.Command{
+	Use:     "rename OLD_NAME NEW_NAME",
+	Short:   "Renames a namespace",
+	Aliases: []string{"mv"},
+	Args: func(cmd *cobra.Command, args []string) error {
+		expectedArguments := 2
+		if len(args) < expectedArguments {
+			return errMissingParameter
+		}
+
+		return nil
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
+		defer cancel()
+		defer conn.Close()
+
+		request := &v1.RenameNamespaceRequest{
+			OldName: args[0],
+			NewName: args[1],
+		}
+
+		response, err := client.RenameNamespace(ctx, request)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf(
+					"Cannot rename namespace: %s",
+					status.Convert(err).Message(),
+				),
+				output,
+			)
+
+			return
+		}
+
+		SuccessOutput(response.Namespace, "Namespace renamed", output)
+	},
+}

cmd/headscale/cli/nodes.go

@@ -3,72 +3,56 @@ package cli
 import (
 	"fmt"
 	"log"
-	"net/netip"
-	"slices"
 	"strconv"
 	"strings"
 	"time"
 
 	survey "github.com/AlecAivazis/survey/v2"
+	"github.com/juanfont/headscale"
 	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
-	"github.com/juanfont/headscale/hscontrol/util"
 	"github.com/pterm/pterm"
-	"github.com/samber/lo"
 	"github.com/spf13/cobra"
 	"google.golang.org/grpc/status"
+	"inet.af/netaddr"
 	"tailscale.com/types/key"
 )
 
 func init() {
 	rootCmd.AddCommand(nodeCmd)
-	listNodesCmd.Flags().StringP("user", "u", "", "Filter by user")
+	listNodesCmd.Flags().StringP("namespace", "n", "", "Filter by namespace")
 	listNodesCmd.Flags().BoolP("tags", "t", false, "Show tags")
-
-	listNodesCmd.Flags().StringP("namespace", "n", "", "User")
-	listNodesNamespaceFlag := listNodesCmd.Flags().Lookup("namespace")
-	listNodesNamespaceFlag.Deprecated = deprecateNamespaceMessage
-	listNodesNamespaceFlag.Hidden = true
 	nodeCmd.AddCommand(listNodesCmd)
 
-	listNodeRoutesCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
-	nodeCmd.AddCommand(listNodeRoutesCmd)
-
-	registerNodeCmd.Flags().StringP("user", "u", "", "User")
-
-	registerNodeCmd.Flags().StringP("namespace", "n", "", "User")
-	registerNodeNamespaceFlag := registerNodeCmd.Flags().Lookup("namespace")
-	registerNodeNamespaceFlag.Deprecated = deprecateNamespaceMessage
-	registerNodeNamespaceFlag.Hidden = true
-
-	err := registerNodeCmd.MarkFlagRequired("user")
+	registerNodeCmd.Flags().StringP("namespace", "n", "", "Namespace")
+	err := registerNodeCmd.MarkFlagRequired("namespace")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 	registerNodeCmd.Flags().StringP("key", "k", "", "Key")
 	err = registerNodeCmd.MarkFlagRequired("key")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 	nodeCmd.AddCommand(registerNodeCmd)
 
 	expireNodeCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
 	err = expireNodeCmd.MarkFlagRequired("identifier")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 	nodeCmd.AddCommand(expireNodeCmd)
 
 	renameNodeCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
 	err = renameNodeCmd.MarkFlagRequired("identifier")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 	nodeCmd.AddCommand(renameNodeCmd)
 
 	deleteNodeCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
 	err = deleteNodeCmd.MarkFlagRequired("identifier")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 	nodeCmd.AddCommand(deleteNodeCmd)
 
@@ -76,33 +60,26 @@ func init() {
 
 	err = moveNodeCmd.MarkFlagRequired("identifier")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 
-	moveNodeCmd.Flags().Uint64P("user", "u", 0, "New user")
+	moveNodeCmd.Flags().StringP("namespace", "n", "", "New namespace")
 
-	moveNodeCmd.Flags().StringP("namespace", "n", "", "User")
-	moveNodeNamespaceFlag := moveNodeCmd.Flags().Lookup("namespace")
-	moveNodeNamespaceFlag.Deprecated = deprecateNamespaceMessage
-	moveNodeNamespaceFlag.Hidden = true
-
-	err = moveNodeCmd.MarkFlagRequired("user")
+	err = moveNodeCmd.MarkFlagRequired("namespace")
 	if err != nil {
-		log.Fatal(err.Error())
+		log.Fatalf(err.Error())
 	}
 	nodeCmd.AddCommand(moveNodeCmd)
 
 	tagCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
-	tagCmd.MarkFlagRequired("identifier")
-	tagCmd.Flags().StringSliceP("tags", "t", []string{}, "List of tags to add to the node")
+
+	err = tagCmd.MarkFlagRequired("identifier")
+	if err != nil {
+		log.Fatalf(err.Error())
+	}
+	tagCmd.Flags().
+		StringSliceP("tags", "t", []string{}, "List of tags to add to the node")
 	nodeCmd.AddCommand(tagCmd)
-
-	approveRoutesCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
-	approveRoutesCmd.MarkFlagRequired("identifier")
-	approveRoutesCmd.Flags().StringSliceP("routes", "r", []string{}, `List of routes that will be approved (comma-separated, e.g. "10.0.0.0/8,192.168.0.0/24" or empty string to remove all approved routes)`)
-	nodeCmd.AddCommand(approveRoutesCmd)
-
-	nodeCmd.AddCommand(backfillNodeIPsCmd)
 }
 
 var nodeCmd = &cobra.Command{
@@ -113,47 +90,51 @@ var nodeCmd = &cobra.Command{
 
 var registerNodeCmd = &cobra.Command{
 	Use:   "register",
-	Short: "Registers a node to your network",
+	Short: "Registers a machine to your network",
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
-		user, err := cmd.Flags().GetString("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+
+			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
-		registrationID, err := cmd.Flags().GetString("key")
+		machineKey, err := cmd.Flags().GetString("key")
 		if err != nil {
 			ErrorOutput(
 				err,
-				fmt.Sprintf("Error getting node key from flag: %s", err),
+				fmt.Sprintf("Error getting machine key from flag: %s", err),
 				output,
 			)
+
+			return
 		}
 
-		request := &v1.RegisterNodeRequest{
-			Key:  registrationID,
-			User: user,
+		request := &v1.RegisterMachineRequest{
+			Key:       machineKey,
+			Namespace: namespace,
 		}
 
-		response, err := client.RegisterNode(ctx, request)
+		response, err := client.RegisterMachine(ctx, request)
 		if err != nil {
 			ErrorOutput(
 				err,
 				fmt.Sprintf(
-					"Cannot register node: %s\n",
+					"Cannot register machine: %s\n",
 					status.Convert(err).Message(),
 				),
 				output,
 			)
+
+			return
 		}
 
-		SuccessOutput(
-			response.GetNode(),
-			fmt.Sprintf("Node %s registered", response.GetNode().GetGivenName()), output)
+		SuccessOutput(response.Machine, "Machine register", output)
 	},
 }
 
@@ -163,105 +144,49 @@ var listNodesCmd = &cobra.Command{
 	Aliases: []string{"ls", "show"},
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
-		user, err := cmd.Flags().GetString("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+
+			return
 		}
 		showTags, err := cmd.Flags().GetBool("tags")
 		if err != nil {
 			ErrorOutput(err, fmt.Sprintf("Error getting tags flag: %s", err), output)
+
+			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
-		request := &v1.ListNodesRequest{
-			User: user,
+		request := &v1.ListMachinesRequest{
+			Namespace: namespace,
 		}
 
-		response, err := client.ListNodes(ctx, request)
+		response, err := client.ListMachines(ctx, request)
 		if err != nil {
 			ErrorOutput(
 				err,
 				fmt.Sprintf("Cannot get nodes: %s", status.Convert(err).Message()),
 				output,
 			)
-		}
-
-		if output != "" {
-			SuccessOutput(response.GetNodes(), "", output)
-		}
-
-		tableData, err := nodesToPtables(user, showTags, response.GetNodes())
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error converting to table: %s", err), output)
-		}
-
-		err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Failed to render pterm table: %s", err),
-				output,
-			)
-		}
-	},
-}
-
-var listNodeRoutesCmd = &cobra.Command{
-	Use:     "list-routes",
-	Short:   "List routes available on nodes",
-	Aliases: []string{"lsr", "routes"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-		identifier, err := cmd.Flags().GetUint64("identifier")
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error converting ID to integer: %s", err),
-				output,
-			)
 
 			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		request := &v1.ListNodesRequest{}
-
-		response, err := client.ListNodes(ctx, request)
-		if err != nil {
-			ErrorOutput(
-				err,
-				"Cannot get nodes: "+status.Convert(err).Message(),
-				output,
-			)
-		}
-
 		if output != "" {
-			SuccessOutput(response.GetNodes(), "", output)
+			SuccessOutput(response.Machines, "", output)
+
+			return
 		}
 
-		nodes := response.GetNodes()
-		if identifier != 0 {
-			for _, node := range response.GetNodes() {
-				if node.GetId() == identifier {
-					nodes = []*v1.Node{node}
-					break
-				}
-			}
-		}
-
-		nodes = lo.Filter(nodes, func(n *v1.Node, _ int) bool {
-			return (n.GetSubnetRoutes() != nil && len(n.GetSubnetRoutes()) > 0) || (n.GetApprovedRoutes() != nil && len(n.GetApprovedRoutes()) > 0) || (n.GetAvailableRoutes() != nil && len(n.GetAvailableRoutes()) > 0)
-		})
-
-		tableData, err := nodeRoutesToPtables(nodes)
+		tableData, err := nodesToPtables(namespace, showTags, response.Machines)
 		if err != nil {
 			ErrorOutput(err, fmt.Sprintf("Error converting to table: %s", err), output)
+
+			return
 		}
 
 		err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
@@ -271,13 +196,15 @@ var listNodeRoutesCmd = &cobra.Command{
 				fmt.Sprintf("Failed to render pterm table: %s", err),
 				output,
 			)
+
+			return
 		}
 	},
 }
 
 var expireNodeCmd = &cobra.Command{
 	Use:     "expire",
-	Short:   "Expire (log out) a node in your network",
+	Short:   "Expire (log out) a machine in your network",
 	Long:    "Expiring a node will keep the node in the database and force it to reauthenticate.",
 	Aliases: []string{"logout", "exp", "e"},
 	Run: func(cmd *cobra.Command, args []string) {
@@ -294,20 +221,20 @@ var expireNodeCmd = &cobra.Command{
 			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
-		request := &v1.ExpireNodeRequest{
-			NodeId: identifier,
+		request := &v1.ExpireMachineRequest{
+			MachineId: identifier,
 		}
 
-		response, err := client.ExpireNode(ctx, request)
+		response, err := client.ExpireMachine(ctx, request)
 		if err != nil {
 			ErrorOutput(
 				err,
 				fmt.Sprintf(
-					"Cannot expire node: %s\n",
+					"Cannot expire machine: %s\n",
 					status.Convert(err).Message(),
 				),
 				output,
@@ -316,13 +243,13 @@ var expireNodeCmd = &cobra.Command{
 			return
 		}
 
-		SuccessOutput(response.GetNode(), "Node expired", output)
+		SuccessOutput(response.Machine, "Machine expired", output)
 	},
 }
 
 var renameNodeCmd = &cobra.Command{
 	Use:   "rename NEW_NAME",
-	Short: "Renames a node in your network",
+	Short: "Renames a machine in your network",
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
 
@@ -337,7 +264,7 @@ var renameNodeCmd = &cobra.Command{
 			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -345,17 +272,17 @@ var renameNodeCmd = &cobra.Command{
 		if len(args) > 0 {
 			newName = args[0]
 		}
-		request := &v1.RenameNodeRequest{
-			NodeId:  identifier,
-			NewName: newName,
+		request := &v1.RenameMachineRequest{
+			MachineId: identifier,
+			NewName:   newName,
 		}
 
-		response, err := client.RenameNode(ctx, request)
+		response, err := client.RenameMachine(ctx, request)
 		if err != nil {
 			ErrorOutput(
 				err,
 				fmt.Sprintf(
-					"Cannot rename node: %s\n",
+					"Cannot rename machine: %s\n",
 					status.Convert(err).Message(),
 				),
 				output,
@@ -364,7 +291,7 @@ var renameNodeCmd = &cobra.Command{
 			return
 		}
 
-		SuccessOutput(response.GetNode(), "Node renamed", output)
+		SuccessOutput(response.Machine, "Machine renamed", output)
 	},
 }
 
@@ -386,15 +313,15 @@ var deleteNodeCmd = &cobra.Command{
 			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
-		getRequest := &v1.GetNodeRequest{
-			NodeId: identifier,
+		getRequest := &v1.GetMachineRequest{
+			MachineId: identifier,
 		}
 
-		getResponse, err := client.GetNode(ctx, getRequest)
+		getResponse, err := client.GetMachine(ctx, getRequest)
 		if err != nil {
 			ErrorOutput(
 				err,
@@ -408,8 +335,8 @@ var deleteNodeCmd = &cobra.Command{
 			return
 		}
 
-		deleteRequest := &v1.DeleteNodeRequest{
-			NodeId: identifier,
+		deleteRequest := &v1.DeleteMachineRequest{
+			MachineId: identifier,
 		}
 
 		confirm := false
@@ -418,7 +345,7 @@ var deleteNodeCmd = &cobra.Command{
 			prompt := &survey.Confirm{
 				Message: fmt.Sprintf(
 					"Do you want to remove the node %s?",
-					getResponse.GetNode().GetName(),
+					getResponse.GetMachine().Name,
 				),
 			}
 			err = survey.AskOne(prompt, &confirm)
@@ -428,7 +355,7 @@ var deleteNodeCmd = &cobra.Command{
 		}
 
 		if confirm || force {
-			response, err := client.DeleteNode(ctx, deleteRequest)
+			response, err := client.DeleteMachine(ctx, deleteRequest)
 			if output != "" {
 				SuccessOutput(response, "", output)
 
@@ -459,7 +386,7 @@ var deleteNodeCmd = &cobra.Command{
 
 var moveNodeCmd = &cobra.Command{
 	Use:     "move",
-	Short:   "Move node to another user",
+	Short:   "Move node to another namespace",
 	Aliases: []string{"mv"},
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
@@ -475,26 +402,26 @@ var moveNodeCmd = &cobra.Command{
 			return
 		}
 
-		user, err := cmd.Flags().GetUint64("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
 			ErrorOutput(
 				err,
-				fmt.Sprintf("Error getting user: %s", err),
+				fmt.Sprintf("Error getting namespace: %s", err),
 				output,
 			)
 
 			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
-		getRequest := &v1.GetNodeRequest{
-			NodeId: identifier,
+		getRequest := &v1.GetMachineRequest{
+			MachineId: identifier,
 		}
 
-		_, err = client.GetNode(ctx, getRequest)
+		_, err = client.GetMachine(ctx, getRequest)
 		if err != nil {
 			ErrorOutput(
 				err,
@@ -508,12 +435,12 @@ var moveNodeCmd = &cobra.Command{
 			return
 		}
 
-		moveRequest := &v1.MoveNodeRequest{
-			NodeId: identifier,
-			User:   user,
+		moveRequest := &v1.MoveMachineRequest{
+			MachineId: identifier,
+			Namespace: namespace,
 		}
 
-		moveResponse, err := client.MoveNode(ctx, moveRequest)
+		moveResponse, err := client.MoveMachine(ctx, moveRequest)
 		if err != nil {
 			ErrorOutput(
 				err,
@@ -527,78 +454,25 @@ var moveNodeCmd = &cobra.Command{
 			return
 		}
 
-		SuccessOutput(moveResponse.GetNode(), "Node moved to another user", output)
-	},
-}
-
-var backfillNodeIPsCmd = &cobra.Command{
-	Use:   "backfillips",
-	Short: "Backfill IPs missing from nodes",
-	Long: `
-Backfill IPs can be used to add/remove IPs from nodes
-based on the current configuration of Headscale.
-
-If there are nodes that does not have IPv4 or IPv6
-even if prefixes for both are configured in the config,
-this command can be used to assign IPs of the sort to
-all nodes that are missing.
-
-If you remove IPv4 or IPv6 prefixes from the config,
-it can be run to remove the IPs that should no longer
-be assigned to nodes.`,
-	Run: func(cmd *cobra.Command, args []string) {
-		var err error
-		output, _ := cmd.Flags().GetString("output")
-
-		confirm := false
-		prompt := &survey.Confirm{
-			Message: "Are you sure that you want to assign/remove IPs to/from nodes?",
-		}
-		err = survey.AskOne(prompt, &confirm)
-		if err != nil {
-			return
-		}
-		if confirm {
-			ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-			defer cancel()
-			defer conn.Close()
-
-			changes, err := client.BackfillNodeIPs(ctx, &v1.BackfillNodeIPsRequest{Confirmed: confirm})
-			if err != nil {
-				ErrorOutput(
-					err,
-					fmt.Sprintf(
-						"Error backfilling IPs: %s",
-						status.Convert(err).Message(),
-					),
-					output,
-				)
-
-				return
-			}
-
-			SuccessOutput(changes, "Node IPs backfilled successfully", output)
-		}
+		SuccessOutput(moveResponse.Machine, "Node moved to another namespace", output)
 	},
 }
 
 func nodesToPtables(
-	currentUser string,
+	currentNamespace string,
 	showTags bool,
-	nodes []*v1.Node,
+	machines []*v1.Machine,
 ) (pterm.TableData, error) {
 	tableHeader := []string{
 		"ID",
 		"Hostname",
 		"Name",
-		"MachineKey",
 		"NodeKey",
-		"User",
+		"Namespace",
 		"IP addresses",
 		"Ephemeral",
 		"Last seen",
-		"Expiration",
-		"Connected",
+		"Online",
 		"Expired",
 	}
 	if showTags {
@@ -610,46 +484,36 @@ func nodesToPtables(
 	}
 	tableData := pterm.TableData{tableHeader}
 
-	for _, node := range nodes {
+	for _, machine := range machines {
 		var ephemeral bool
-		if node.GetPreAuthKey() != nil && node.GetPreAuthKey().GetEphemeral() {
+		if machine.PreAuthKey != nil && machine.PreAuthKey.Ephemeral {
 			ephemeral = true
 		}
 
 		var lastSeen time.Time
 		var lastSeenTime string
-		if node.GetLastSeen() != nil {
-			lastSeen = node.GetLastSeen().AsTime()
+		if machine.LastSeen != nil {
+			lastSeen = machine.LastSeen.AsTime()
 			lastSeenTime = lastSeen.Format("2006-01-02 15:04:05")
 		}
 
 		var expiry time.Time
-		var expiryTime string
-		if node.GetExpiry() != nil {
-			expiry = node.GetExpiry().AsTime()
-			expiryTime = expiry.Format("2006-01-02 15:04:05")
-		} else {
-			expiryTime = "N/A"
-		}
-
-		var machineKey key.MachinePublic
-		err := machineKey.UnmarshalText(
-			[]byte(node.GetMachineKey()),
-		)
-		if err != nil {
-			machineKey = key.MachinePublic{}
+		if machine.Expiry != nil {
+			expiry = machine.Expiry.AsTime()
 		}
 
 		var nodeKey key.NodePublic
-		err = nodeKey.UnmarshalText(
-			[]byte(node.GetNodeKey()),
+		err := nodeKey.UnmarshalText(
+			[]byte(headscale.NodePublicKeyEnsurePrefix(machine.NodeKey)),
 		)
 		if err != nil {
 			return nil, err
 		}
 
 		var online string
-		if node.GetOnline() {
+		if lastSeen.After(
+			time.Now().Add(-5 * time.Minute),
+		) { // TODO: Find a better way to reliably show if online
 			online = pterm.LightGreen("online")
 		} else {
 			online = pterm.LightRed("offline")
@@ -663,37 +527,37 @@ func nodesToPtables(
 		}
 
 		var forcedTags string
-		for _, tag := range node.GetForcedTags() {
+		for _, tag := range machine.ForcedTags {
 			forcedTags += "," + tag
 		}
 		forcedTags = strings.TrimLeft(forcedTags, ",")
 		var invalidTags string
-		for _, tag := range node.GetInvalidTags() {
-			if !slices.Contains(node.GetForcedTags(), tag) {
+		for _, tag := range machine.InvalidTags {
+			if !contains(machine.ForcedTags, tag) {
 				invalidTags += "," + pterm.LightRed(tag)
 			}
 		}
 		invalidTags = strings.TrimLeft(invalidTags, ",")
 		var validTags string
-		for _, tag := range node.GetValidTags() {
-			if !slices.Contains(node.GetForcedTags(), tag) {
+		for _, tag := range machine.ValidTags {
+			if !contains(machine.ForcedTags, tag) {
 				validTags += "," + pterm.LightGreen(tag)
 			}
 		}
 		validTags = strings.TrimLeft(validTags, ",")
 
-		var user string
-		if currentUser == "" || (currentUser == node.GetUser().GetName()) {
-			user = pterm.LightMagenta(node.GetUser().GetName())
+		var namespace string
+		if currentNamespace == "" || (currentNamespace == machine.Namespace.Name) {
+			namespace = pterm.LightMagenta(machine.Namespace.Name)
 		} else {
-			// Shared into this user
-			user = pterm.LightYellow(node.GetUser().GetName())
+			// Shared into this namespace
+			namespace = pterm.LightYellow(machine.Namespace.Name)
 		}
 
 		var IPV4Address string
 		var IPV6Address string
-		for _, addr := range node.GetIpAddresses() {
-			if netip.MustParseAddr(addr).Is4() {
+		for _, addr := range machine.IpAddresses {
+			if netaddr.MustParseIP(addr).Is4() {
 				IPV4Address = addr
 			} else {
 				IPV6Address = addr
@@ -701,16 +565,14 @@ func nodesToPtables(
 		}
 
 		nodeData := []string{
-			strconv.FormatUint(node.GetId(), util.Base10),
-			node.GetName(),
-			node.GetGivenName(),
-			machineKey.ShortString(),
+			strconv.FormatUint(machine.Id, headscale.Base10),
+			machine.Name,
+			machine.GetGivenName(),
 			nodeKey.ShortString(),
-			user,
+			namespace,
 			strings.Join([]string{IPV4Address, IPV6Address}, ", "),
 			strconv.FormatBool(ephemeral),
 			lastSeenTime,
-			expiryTime,
 			online,
 			expired,
 		}
@@ -726,42 +588,13 @@ func nodesToPtables(
 	return tableData, nil
 }
 
-func nodeRoutesToPtables(
-	nodes []*v1.Node,
-) (pterm.TableData, error) {
-	tableHeader := []string{
-		"ID",
-		"Hostname",
-		"Approved",
-		"Available",
-		"Serving (Primary)",
-	}
-	tableData := pterm.TableData{tableHeader}
-
-	for _, node := range nodes {
-		nodeData := []string{
-			strconv.FormatUint(node.GetId(), util.Base10),
-			node.GetGivenName(),
-			strings.Join(node.GetApprovedRoutes(), ", "),
-			strings.Join(node.GetAvailableRoutes(), ", "),
-			strings.Join(node.GetSubnetRoutes(), ", "),
-		}
-		tableData = append(
-			tableData,
-			nodeData,
-		)
-	}
-
-	return tableData, nil
-}
-
 var tagCmd = &cobra.Command{
 	Use:     "tag",
 	Short:   "Manage the tags of a node",
 	Aliases: []string{"tags", "t"},
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -780,17 +613,17 @@ var tagCmd = &cobra.Command{
 		if err != nil {
 			ErrorOutput(
 				err,
-				fmt.Sprintf("Error retrieving list of tags to add to node, %v", err),
+				fmt.Sprintf("Error retrieving list of tags to add to machine, %v", err),
 				output,
 			)
 
 			return
 		}
 
-		// Sending tags to node
+		// Sending tags to machine
 		request := &v1.SetTagsRequest{
-			NodeId: identifier,
-			Tags:   tagsToSet,
+			MachineId: identifier,
+			Tags:      tagsToSet,
 		}
 		resp, err := client.SetTags(ctx, request)
 		if err != nil {
@@ -805,65 +638,8 @@ var tagCmd = &cobra.Command{
 
 		if resp != nil {
 			SuccessOutput(
-				resp.GetNode(),
-				"Node updated",
-				output,
-			)
-		}
-	},
-}
-
-var approveRoutesCmd = &cobra.Command{
-	Use:   "approve-routes",
-	Short: "Manage the approved routes of a node",
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		// retrieve flags from CLI
-		identifier, err := cmd.Flags().GetUint64("identifier")
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error converting ID to integer: %s", err),
-				output,
-			)
-
-			return
-		}
-		routes, err := cmd.Flags().GetStringSlice("routes")
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error retrieving list of routes to add to node, %v", err),
-				output,
-			)
-
-			return
-		}
-
-		// Sending routes to node
-		request := &v1.SetApprovedRoutesRequest{
-			NodeId: identifier,
-			Routes: routes,
-		}
-		resp, err := client.SetApprovedRoutes(ctx, request)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error while sending routes to headscale: %s", err),
-				output,
-			)
-
-			return
-		}
-
-		if resp != nil {
-			SuccessOutput(
-				resp.GetNode(),
-				"Node updated",
+				resp.GetMachine(),
+				"Machine updated",
 				output,
 			)
 		}

cmd/headscale/cli/policy.go

@@ -1,121 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"io"
-	"os"
-
-	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
-	"github.com/juanfont/headscale/hscontrol/policy"
-	"github.com/rs/zerolog/log"
-	"github.com/spf13/cobra"
-)
-
-func init() {
-	rootCmd.AddCommand(policyCmd)
-	policyCmd.AddCommand(getPolicy)
-
-	setPolicy.Flags().StringP("file", "f", "", "Path to a policy file in HuJSON format")
-	if err := setPolicy.MarkFlagRequired("file"); err != nil {
-		log.Fatal().Err(err).Msg("")
-	}
-	policyCmd.AddCommand(setPolicy)
-
-	checkPolicy.Flags().StringP("file", "f", "", "Path to a policy file in HuJSON format")
-	if err := checkPolicy.MarkFlagRequired("file"); err != nil {
-		log.Fatal().Err(err).Msg("")
-	}
-	policyCmd.AddCommand(checkPolicy)
-}
-
-var policyCmd = &cobra.Command{
-	Use:   "policy",
-	Short: "Manage the Headscale ACL Policy",
-}
-
-var getPolicy = &cobra.Command{
-	Use:     "get",
-	Short:   "Print the current ACL Policy",
-	Aliases: []string{"show", "view", "fetch"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		request := &v1.GetPolicyRequest{}
-
-		response, err := client.GetPolicy(ctx, request)
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Failed loading ACL Policy: %s", err), output)
-		}
-
-		// TODO(pallabpain): Maybe print this better?
-		// This does not pass output as we dont support yaml, json or json-line
-		// output for this command. It is HuJSON already.
-		SuccessOutput("", response.GetPolicy(), "")
-	},
-}
-
-var setPolicy = &cobra.Command{
-	Use:   "set",
-	Short: "Updates the ACL Policy",
-	Long: `
-	Updates the existing ACL Policy with the provided policy. The policy must be a valid HuJSON object.
-	This command only works when the acl.policy_mode is set to "db", and the policy will be stored in the database.`,
-	Aliases: []string{"put", "update"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-		policyPath, _ := cmd.Flags().GetString("file")
-
-		f, err := os.Open(policyPath)
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error opening the policy file: %s", err), output)
-		}
-		defer f.Close()
-
-		policyBytes, err := io.ReadAll(f)
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error reading the policy file: %s", err), output)
-		}
-
-		request := &v1.SetPolicyRequest{Policy: string(policyBytes)}
-
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		if _, err := client.SetPolicy(ctx, request); err != nil {
-			ErrorOutput(err, fmt.Sprintf("Failed to set ACL Policy: %s", err), output)
-		}
-
-		SuccessOutput(nil, "Policy updated.", "")
-	},
-}
-
-var checkPolicy = &cobra.Command{
-	Use:   "check",
-	Short: "Check the Policy file for errors",
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-		policyPath, _ := cmd.Flags().GetString("file")
-
-		f, err := os.Open(policyPath)
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error opening the policy file: %s", err), output)
-		}
-		defer f.Close()
-
-		policyBytes, err := io.ReadAll(f)
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error reading the policy file: %s", err), output)
-		}
-
-		_, err = policy.NewPolicyManager(policyBytes, nil, nil)
-		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error parsing the policy file: %s", err), output)
-		}
-
-		SuccessOutput(nil, "Policy is valid", "")
-	},
-}

cmd/headscale/cli/preauthkeys.go

@@ -3,7 +3,6 @@ package cli
 import (
 	"fmt"
 	"strconv"
-	"strings"
 	"time"
 
 	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
@@ -20,14 +19,8 @@ const (
 
 func init() {
 	rootCmd.AddCommand(preauthkeysCmd)
-	preauthkeysCmd.PersistentFlags().Uint64P("user", "u", 0, "User identifier (ID)")
-
-	preauthkeysCmd.PersistentFlags().StringP("namespace", "n", "", "User")
-	pakNamespaceFlag := preauthkeysCmd.PersistentFlags().Lookup("namespace")
-	pakNamespaceFlag.Deprecated = deprecateNamespaceMessage
-	pakNamespaceFlag.Hidden = true
-
-	err := preauthkeysCmd.MarkPersistentFlagRequired("user")
+	preauthkeysCmd.PersistentFlags().StringP("namespace", "n", "", "Namespace")
+	err := preauthkeysCmd.MarkPersistentFlagRequired("namespace")
 	if err != nil {
 		log.Fatal().Err(err).Msg("")
 	}
@@ -40,8 +33,6 @@ func init() {
 		Bool("ephemeral", false, "Preauthkey for ephemeral nodes")
 	createPreAuthKeyCmd.Flags().
 		StringP("expiration", "e", DefaultPreAuthKeyExpiry, "Human-readable expiration of the key (e.g. 30m, 24h)")
-	createPreAuthKeyCmd.Flags().
-		StringSlice("tags", []string{}, "Tags to automatically assign to node")
 }
 
 var preauthkeysCmd = &cobra.Command{
@@ -52,22 +43,24 @@ var preauthkeysCmd = &cobra.Command{
 
 var listPreAuthKeys = &cobra.Command{
 	Use:     "list",
-	Short:   "List the preauthkeys for this user",
+	Short:   "List the preauthkeys for this namespace",
 	Aliases: []string{"ls", "show"},
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
 
-		user, err := cmd.Flags().GetUint64("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+
+			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
 		request := &v1.ListPreAuthKeysRequest{
-			User: user,
+			Namespace: namespace,
 		}
 
 		response, err := client.ListPreAuthKeys(ctx, request)
@@ -82,44 +75,35 @@ var listPreAuthKeys = &cobra.Command{
 		}
 
 		if output != "" {
-			SuccessOutput(response.GetPreAuthKeys(), "", output)
+			SuccessOutput(response.PreAuthKeys, "", output)
+
+			return
 		}
 
 		tableData := pterm.TableData{
-			{
-				"ID",
-				"Key",
-				"Reusable",
-				"Ephemeral",
-				"Used",
-				"Expiration",
-				"Created",
-				"Tags",
-			},
+			{"ID", "Key", "Reusable", "Ephemeral", "Used", "Expiration", "Created"},
 		}
-		for _, key := range response.GetPreAuthKeys() {
+		for _, key := range response.PreAuthKeys {
 			expiration := "-"
 			if key.GetExpiration() != nil {
-				expiration = ColourTime(key.GetExpiration().AsTime())
+				expiration = ColourTime(key.Expiration.AsTime())
 			}
 
-			aclTags := ""
-
-			for _, tag := range key.GetAclTags() {
-				aclTags += "," + tag
+			var reusable string
+			if key.GetEphemeral() {
+				reusable = "N/A"
+			} else {
+				reusable = fmt.Sprintf("%v", key.GetReusable())
 			}
 
-			aclTags = strings.TrimLeft(aclTags, ",")
-
 			tableData = append(tableData, []string{
-				strconv.FormatUint(key.GetId(), 10),
+				key.GetId(),
 				key.GetKey(),
-				strconv.FormatBool(key.GetReusable()),
+				reusable,
 				strconv.FormatBool(key.GetEphemeral()),
 				strconv.FormatBool(key.GetUsed()),
 				expiration,
 				key.GetCreatedAt().AsTime().Format("2006-01-02 15:04:05"),
-				aclTags,
 			})
 
 		}
@@ -130,31 +114,39 @@ var listPreAuthKeys = &cobra.Command{
 				fmt.Sprintf("Failed to render pterm table: %s", err),
 				output,
 			)
+
+			return
 		}
 	},
 }
 
 var createPreAuthKeyCmd = &cobra.Command{
 	Use:     "create",
-	Short:   "Creates a new preauthkey in the specified user",
+	Short:   "Creates a new preauthkey in the specified namespace",
 	Aliases: []string{"c", "new"},
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
 
-		user, err := cmd.Flags().GetUint64("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+
+			return
 		}
 
 		reusable, _ := cmd.Flags().GetBool("reusable")
 		ephemeral, _ := cmd.Flags().GetBool("ephemeral")
-		tags, _ := cmd.Flags().GetStringSlice("tags")
+
+		log.Trace().
+			Bool("reusable", reusable).
+			Bool("ephemeral", ephemeral).
+			Str("namespace", namespace).
+			Msg("Preparing to create preauthkey")
 
 		request := &v1.CreatePreAuthKeyRequest{
-			User:      user,
+			Namespace: namespace,
 			Reusable:  reusable,
 			Ephemeral: ephemeral,
-			AclTags:   tags,
 		}
 
 		durationStr, _ := cmd.Flags().GetString("expiration")
@@ -166,17 +158,17 @@ var createPreAuthKeyCmd = &cobra.Command{
 				fmt.Sprintf("Could not parse duration: %s\n", err),
 				output,
 			)
+
+			return
 		}
 
 		expiration := time.Now().UTC().Add(time.Duration(duration))
 
-		log.Trace().
-			Dur("expiration", time.Duration(duration)).
-			Msg("expiration has been set")
+		log.Trace().Dur("expiration", time.Duration(duration)).Msg("expiration has been set")
 
 		request.Expiration = timestamppb.New(expiration)
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
@@ -187,9 +179,11 @@ var createPreAuthKeyCmd = &cobra.Command{
 				fmt.Sprintf("Cannot create Pre Auth Key: %s\n", err),
 				output,
 			)
+
+			return
 		}
 
-		SuccessOutput(response.GetPreAuthKey(), response.GetPreAuthKey().GetKey(), output)
+		SuccessOutput(response.PreAuthKey, response.PreAuthKey.Key, output)
 	},
 }
 
@@ -206,18 +200,20 @@ var expirePreAuthKeyCmd = &cobra.Command{
 	},
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
-		user, err := cmd.Flags().GetUint64("user")
+		namespace, err := cmd.Flags().GetString("namespace")
 		if err != nil {
-			ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+
+			return
 		}
 
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
 		defer cancel()
 		defer conn.Close()
 
 		request := &v1.ExpirePreAuthKeyRequest{
-			User: user,
-			Key:  args[0],
+			Namespace: namespace,
+			Key:       args[0],
 		}
 
 		response, err := client.ExpirePreAuthKey(ctx, request)
@@ -227,6 +223,8 @@ var expirePreAuthKeyCmd = &cobra.Command{
 				fmt.Sprintf("Cannot expire Pre Auth Key: %s\n", err),
 				output,
 			)
+
+			return
 		}
 
 		SuccessOutput(response, "Key expired", output)

cmd/headscale/cli/root.go

@@ -4,33 +4,17 @@ import (
 	"fmt"
 	"os"
 	"runtime"
-	"slices"
 
-	"github.com/juanfont/headscale/hscontrol/types"
+	"github.com/juanfont/headscale"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
 	"github.com/tcnksm/go-latest"
 )
 
-const (
-	deprecateNamespaceMessage = "use --user"
-)
-
 var cfgFile string = ""
 
 func init() {
-	if len(os.Args) > 1 &&
-		(os.Args[1] == "version" || os.Args[1] == "mockoidc" || os.Args[1] == "completion") {
-		return
-	}
-
-	if slices.Contains(os.Args, "policy") && slices.Contains(os.Args, "check") {
-		zerolog.SetGlobalLevel(zerolog.Disabled)
-		return
-	}
-
 	cobra.OnInitialize(initConfig)
 	rootCmd.PersistentFlags().
 		StringVarP(&cfgFile, "config", "c", "", "config file (default is /etc/headscale/config.yaml)")
@@ -41,49 +25,47 @@ func init() {
 }
 
 func initConfig() {
-	if cfgFile == "" {
-		cfgFile = os.Getenv("HEADSCALE_CONFIG")
-	}
 	if cfgFile != "" {
-		err := types.LoadConfig(cfgFile, true)
+		err := headscale.LoadConfig(cfgFile, true)
 		if err != nil {
-			log.Fatal().Caller().Err(err).Msgf("Error loading config file %s", cfgFile)
+			log.Fatal().Caller().Err(err)
 		}
 	} else {
-		err := types.LoadConfig("", false)
+		err := headscale.LoadConfig("", false)
 		if err != nil {
-			log.Fatal().Caller().Err(err).Msgf("Error loading config")
+			log.Fatal().Caller().Err(err)
 		}
 	}
 
+	cfg, err := headscale.GetHeadscaleConfig()
+	if err != nil {
+		log.Fatal().Caller().Err(err)
+	}
+
 	machineOutput := HasMachineOutputFlag()
 
-	// If the user has requested a "node" readable format,
+	zerolog.SetGlobalLevel(cfg.LogLevel)
+
+	// If the user has requested a "machine" readable format,
 	// then disable login so the output remains valid.
 	if machineOutput {
 		zerolog.SetGlobalLevel(zerolog.Disabled)
 	}
 
-	logFormat := viper.GetString("log.format")
-	if logFormat == types.JSONLogFormat {
-		log.Logger = log.Output(os.Stdout)
-	}
-
-	disableUpdateCheck := viper.GetBool("disable_check_updates")
-	if !disableUpdateCheck && !machineOutput {
+	if !cfg.DisableUpdateCheck && !machineOutput {
 		if (runtime.GOOS == "linux" || runtime.GOOS == "darwin") &&
-			types.Version != "dev" {
+			Version != "dev" {
 			githubTag := &latest.GithubTag{
 				Owner:      "juanfont",
 				Repository: "headscale",
 			}
-			res, err := latest.Check(githubTag, types.Version)
+			res, err := latest.Check(githubTag, Version)
 			if err == nil && res.Outdated {
 				//nolint
-				log.Warn().Msgf(
+				fmt.Printf(
 					"An updated version of Headscale has been found (%s vs. your current %s). Check it out https://github.com/juanfont/headscale/releases\n",
 					res.Current,
-					types.Version,
+					Version,
 				)
 			}
 		}

cmd/headscale/cli/routes.go

@@ -0,0 +1,233 @@
+package cli
+
+import (
+	"fmt"
+	"log"
+	"strconv"
+
+	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
+	"github.com/pterm/pterm"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+)
+
+func init() {
+	rootCmd.AddCommand(routesCmd)
+
+	listRoutesCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
+	err := listRoutesCmd.MarkFlagRequired("identifier")
+	if err != nil {
+		log.Fatalf(err.Error())
+	}
+	routesCmd.AddCommand(listRoutesCmd)
+
+	enableRouteCmd.Flags().
+		StringSliceP("route", "r", []string{}, "List (or repeated flags) of routes to enable")
+	enableRouteCmd.Flags().Uint64P("identifier", "i", 0, "Node identifier (ID)")
+	enableRouteCmd.Flags().BoolP("all", "a", false, "All routes from host")
+
+	err = enableRouteCmd.MarkFlagRequired("identifier")
+	if err != nil {
+		log.Fatalf(err.Error())
+	}
+
+	routesCmd.AddCommand(enableRouteCmd)
+
+	nodeCmd.AddCommand(routesCmd)
+}
+
+var routesCmd = &cobra.Command{
+	Use:     "routes",
+	Short:   "Manage the routes of Headscale",
+	Aliases: []string{"r", "route"},
+}
+
+var listRoutesCmd = &cobra.Command{
+	Use:     "list",
+	Short:   "List routes advertised and enabled by a given node",
+	Aliases: []string{"ls", "show"},
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		machineID, err := cmd.Flags().GetUint64("identifier")
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Error getting machine id from flag: %s", err),
+				output,
+			)
+
+			return
+		}
+
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
+		defer cancel()
+		defer conn.Close()
+
+		request := &v1.GetMachineRouteRequest{
+			MachineId: machineID,
+		}
+
+		response, err := client.GetMachineRoute(ctx, request)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Cannot get nodes: %s", status.Convert(err).Message()),
+				output,
+			)
+
+			return
+		}
+
+		if output != "" {
+			SuccessOutput(response.Routes, "", output)
+
+			return
+		}
+
+		tableData := routesToPtables(response.Routes)
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Error converting to table: %s", err), output)
+
+			return
+		}
+
+		err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Failed to render pterm table: %s", err),
+				output,
+			)
+
+			return
+		}
+	},
+}
+
+var enableRouteCmd = &cobra.Command{
+	Use:   "enable",
+	Short: "Set the enabled routes for a given node",
+	Long: `This command will take a list of routes that will _replace_ 
+the current set of routes on a given node.
+If you would like to disable a route, simply run the command again, but 
+omit the route you do not want to enable.
+	`,
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		machineID, err := cmd.Flags().GetUint64("identifier")
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Error getting machine id from flag: %s", err),
+				output,
+			)
+
+			return
+		}
+
+		ctx, client, conn, cancel := getHeadscaleCLIClient()
+		defer cancel()
+		defer conn.Close()
+
+		var routes []string
+
+		isAll, _ := cmd.Flags().GetBool("all")
+		if isAll {
+			response, err := client.GetMachineRoute(ctx, &v1.GetMachineRouteRequest{
+				MachineId: machineID,
+			})
+			if err != nil {
+				ErrorOutput(
+					err,
+					fmt.Sprintf(
+						"Cannot get machine routes: %s\n",
+						status.Convert(err).Message(),
+					),
+					output,
+				)
+
+				return
+			}
+			routes = response.GetRoutes().GetAdvertisedRoutes()
+		} else {
+			routes, err = cmd.Flags().GetStringSlice("route")
+			if err != nil {
+				ErrorOutput(
+					err,
+					fmt.Sprintf("Error getting routes from flag: %s", err),
+					output,
+				)
+
+				return
+			}
+		}
+
+		request := &v1.EnableMachineRoutesRequest{
+			MachineId: machineID,
+			Routes:    routes,
+		}
+
+		response, err := client.EnableMachineRoutes(ctx, request)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf(
+					"Cannot register machine: %s\n",
+					status.Convert(err).Message(),
+				),
+				output,
+			)
+
+			return
+		}
+
+		if output != "" {
+			SuccessOutput(response.Routes, "", output)
+
+			return
+		}
+
+		tableData := routesToPtables(response.Routes)
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Error converting to table: %s", err), output)
+
+			return
+		}
+
+		err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Failed to render pterm table: %s", err),
+				output,
+			)
+
+			return
+		}
+	},
+}
+
+// routesToPtables converts the list of routes to a nice table.
+func routesToPtables(routes *v1.Routes) pterm.TableData {
+	tableData := pterm.TableData{{"Route", "Enabled"}}
+
+	for _, route := range routes.GetAdvertisedRoutes() {
+		enabled := isStringInSlice(routes.EnabledRoutes, route)
+
+		tableData = append(tableData, []string{route, strconv.FormatBool(enabled)})
+	}
+
+	return tableData
+}
+
+func isStringInSlice(strs []string, s string) bool {
+	for _, s2 := range strs {
+		if s == s2 {
+			return true
+		}
+	}
+
+	return false
+}

cmd/headscale/cli/server.go

@@ -1,9 +1,6 @@
 package cli
 
 import (
-	"errors"
-	"net/http"
-
 	"github.com/rs/zerolog/log"
 	"github.com/spf13/cobra"
 )
@@ -19,14 +16,14 @@ var serveCmd = &cobra.Command{
 		return nil
 	},
 	Run: func(cmd *cobra.Command, args []string) {
-		app, err := newHeadscaleServerWithConfig()
+		app, err := getHeadscaleApp()
 		if err != nil {
 			log.Fatal().Caller().Err(err).Msg("Error initializing")
 		}
 
 		err = app.Serve()
-		if err != nil && !errors.Is(err, http.ErrServerClosed) {
-			log.Fatal().Caller().Err(err).Msg("Headscale ran into an error and had to shut down.")
+		if err != nil {
+			log.Fatal().Caller().Err(err).Msg("Error starting server")
 		}
 	},
 }

cmd/headscale/cli/users.go

@@ -1,325 +0,0 @@
-package cli
-
-import (
-	"errors"
-	"fmt"
-	"net/url"
-
-	survey "github.com/AlecAivazis/survey/v2"
-	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
-	"github.com/pterm/pterm"
-	"github.com/rs/zerolog/log"
-	"github.com/spf13/cobra"
-	"google.golang.org/grpc/status"
-)
-
-func usernameAndIDFlag(cmd *cobra.Command) {
-	cmd.Flags().Int64P("identifier", "i", -1, "User identifier (ID)")
-	cmd.Flags().StringP("name", "n", "", "Username")
-}
-
-// usernameAndIDFromFlag returns the username and ID from the flags of the command.
-// If both are empty, it will exit the program with an error.
-func usernameAndIDFromFlag(cmd *cobra.Command) (uint64, string) {
-	username, _ := cmd.Flags().GetString("name")
-	identifier, _ := cmd.Flags().GetInt64("identifier")
-	if username == "" && identifier < 0 {
-		err := errors.New("--name or --identifier flag is required")
-		ErrorOutput(
-			err,
-			fmt.Sprintf(
-				"Cannot rename user: %s",
-				status.Convert(err).Message(),
-			),
-			"",
-		)
-	}
-
-	return uint64(identifier), username
-}
-
-func init() {
-	rootCmd.AddCommand(userCmd)
-	userCmd.AddCommand(createUserCmd)
-	createUserCmd.Flags().StringP("display-name", "d", "", "Display name")
-	createUserCmd.Flags().StringP("email", "e", "", "Email")
-	createUserCmd.Flags().StringP("picture-url", "p", "", "Profile picture URL")
-	userCmd.AddCommand(listUsersCmd)
-	usernameAndIDFlag(listUsersCmd)
-	listUsersCmd.Flags().StringP("email", "e", "", "Email")
-	userCmd.AddCommand(destroyUserCmd)
-	usernameAndIDFlag(destroyUserCmd)
-	userCmd.AddCommand(renameUserCmd)
-	usernameAndIDFlag(renameUserCmd)
-	renameUserCmd.Flags().StringP("new-name", "r", "", "New username")
-	renameNodeCmd.MarkFlagRequired("new-name")
-}
-
-var errMissingParameter = errors.New("missing parameters")
-
-var userCmd = &cobra.Command{
-	Use:     "users",
-	Short:   "Manage the users of Headscale",
-	Aliases: []string{"user", "namespace", "namespaces", "ns"},
-}
-
-var createUserCmd = &cobra.Command{
-	Use:     "create NAME",
-	Short:   "Creates a new user",
-	Aliases: []string{"c", "new"},
-	Args: func(cmd *cobra.Command, args []string) error {
-		if len(args) < 1 {
-			return errMissingParameter
-		}
-
-		return nil
-	},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-
-		userName := args[0]
-
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		log.Trace().Interface("client", client).Msg("Obtained gRPC client")
-
-		request := &v1.CreateUserRequest{Name: userName}
-
-		if displayName, _ := cmd.Flags().GetString("display-name"); displayName != "" {
-			request.DisplayName = displayName
-		}
-
-		if email, _ := cmd.Flags().GetString("email"); email != "" {
-			request.Email = email
-		}
-
-		if pictureURL, _ := cmd.Flags().GetString("picture-url"); pictureURL != "" {
-			if _, err := url.Parse(pictureURL); err != nil {
-				ErrorOutput(
-					err,
-					fmt.Sprintf(
-						"Invalid Picture URL: %s",
-						err,
-					),
-					output,
-				)
-			}
-			request.PictureUrl = pictureURL
-		}
-
-		log.Trace().Interface("request", request).Msg("Sending CreateUser request")
-		response, err := client.CreateUser(ctx, request)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf(
-					"Cannot create user: %s",
-					status.Convert(err).Message(),
-				),
-				output,
-			)
-		}
-
-		SuccessOutput(response.GetUser(), "User created", output)
-	},
-}
-
-var destroyUserCmd = &cobra.Command{
-	Use:     "destroy --identifier ID or --name NAME",
-	Short:   "Destroys a user",
-	Aliases: []string{"delete"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-
-		id, username := usernameAndIDFromFlag(cmd)
-		request := &v1.ListUsersRequest{
-			Name: username,
-			Id:   id,
-		}
-
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		users, err := client.ListUsers(ctx, request)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error: %s", status.Convert(err).Message()),
-				output,
-			)
-		}
-
-		if len(users.GetUsers()) != 1 {
-			err := fmt.Errorf("Unable to determine user to delete, query returned multiple users, use ID")
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error: %s", status.Convert(err).Message()),
-				output,
-			)
-		}
-
-		user := users.GetUsers()[0]
-
-		confirm := false
-		force, _ := cmd.Flags().GetBool("force")
-		if !force {
-			prompt := &survey.Confirm{
-				Message: fmt.Sprintf(
-					"Do you want to remove the user %q (%d) and any associated preauthkeys?",
-					user.GetName(), user.GetId(),
-				),
-			}
-			err := survey.AskOne(prompt, &confirm)
-			if err != nil {
-				return
-			}
-		}
-
-		if confirm || force {
-			request := &v1.DeleteUserRequest{Id: user.GetId()}
-
-			response, err := client.DeleteUser(ctx, request)
-			if err != nil {
-				ErrorOutput(
-					err,
-					fmt.Sprintf(
-						"Cannot destroy user: %s",
-						status.Convert(err).Message(),
-					),
-					output,
-				)
-			}
-			SuccessOutput(response, "User destroyed", output)
-		} else {
-			SuccessOutput(map[string]string{"Result": "User not destroyed"}, "User not destroyed", output)
-		}
-	},
-}
-
-var listUsersCmd = &cobra.Command{
-	Use:     "list",
-	Short:   "List all the users",
-	Aliases: []string{"ls", "show"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		request := &v1.ListUsersRequest{}
-
-		id, _ := cmd.Flags().GetInt64("identifier")
-		username, _ := cmd.Flags().GetString("name")
-		email, _ := cmd.Flags().GetString("email")
-
-		// filter by one param at most
-		switch {
-		case id > 0:
-			request.Id = uint64(id)
-			break
-		case username != "":
-			request.Name = username
-			break
-		case email != "":
-			request.Email = email
-			break
-		}
-
-		response, err := client.ListUsers(ctx, request)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Cannot get users: %s", status.Convert(err).Message()),
-				output,
-			)
-		}
-
-		if output != "" {
-			SuccessOutput(response.GetUsers(), "", output)
-		}
-
-		tableData := pterm.TableData{{"ID", "Name", "Username", "Email", "Created"}}
-		for _, user := range response.GetUsers() {
-			tableData = append(
-				tableData,
-				[]string{
-					fmt.Sprintf("%d", user.GetId()),
-					user.GetDisplayName(),
-					user.GetName(),
-					user.GetEmail(),
-					user.GetCreatedAt().AsTime().Format("2006-01-02 15:04:05"),
-				},
-			)
-		}
-		err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Failed to render pterm table: %s", err),
-				output,
-			)
-		}
-	},
-}
-
-var renameUserCmd = &cobra.Command{
-	Use:     "rename",
-	Short:   "Renames a user",
-	Aliases: []string{"mv"},
-	Run: func(cmd *cobra.Command, args []string) {
-		output, _ := cmd.Flags().GetString("output")
-
-		ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
-		defer cancel()
-		defer conn.Close()
-
-		id, username := usernameAndIDFromFlag(cmd)
-		listReq := &v1.ListUsersRequest{
-			Name: username,
-			Id:   id,
-		}
-
-		users, err := client.ListUsers(ctx, listReq)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error: %s", status.Convert(err).Message()),
-				output,
-			)
-		}
-
-		if len(users.GetUsers()) != 1 {
-			err := fmt.Errorf("Unable to determine user to delete, query returned multiple users, use ID")
-			ErrorOutput(
-				err,
-				fmt.Sprintf("Error: %s", status.Convert(err).Message()),
-				output,
-			)
-		}
-
-		newName, _ := cmd.Flags().GetString("new-name")
-
-		renameReq := &v1.RenameUserRequest{
-			OldId:   id,
-			NewName: newName,
-		}
-
-		response, err := client.RenameUser(ctx, renameReq)
-		if err != nil {
-			ErrorOutput(
-				err,
-				fmt.Sprintf(
-					"Cannot rename user: %s",
-					status.Convert(err).Message(),
-				),
-				output,
-			)
-		}
-
-		SuccessOutput(response.GetUser(), "User renamed", output)
-	},
-}

cmd/headscale/cli/utils.go

@@ -6,42 +6,50 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"reflect"
 
+	"github.com/juanfont/headscale"
 	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
-	"github.com/juanfont/headscale/hscontrol"
-	"github.com/juanfont/headscale/hscontrol/types"
-	"github.com/juanfont/headscale/hscontrol/util"
 	"github.com/rs/zerolog/log"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/credentials/insecure"
-	"gopkg.in/yaml.v3"
+	"gopkg.in/yaml.v2"
 )
 
 const (
 	HeadscaleDateTimeFormat = "2006-01-02 15:04:05"
-	SocketWritePermissions  = 0o666
 )
 
-func newHeadscaleServerWithConfig() (*hscontrol.Headscale, error) {
-	cfg, err := types.LoadServerConfig()
+func getHeadscaleApp() (*headscale.Headscale, error) {
+	cfg, err := headscale.GetHeadscaleConfig()
 	if err != nil {
-		return nil, fmt.Errorf(
-			"loading configuration: %w",
-			err,
-		)
+		return nil, fmt.Errorf("failed to load configuration while creating headscale instance: %w", err)
 	}
 
-	app, err := hscontrol.NewHeadscale(cfg)
+	app, err := headscale.NewHeadscale(cfg)
 	if err != nil {
-		return nil, fmt.Errorf("creating new headscale: %w", err)
+		return nil, err
+	}
+
+	// We are doing this here, as in the future could be cool to have it also hot-reload
+
+	if cfg.ACL.PolicyPath != "" {
+		aclPath := headscale.AbsolutePathFromConfigPath(cfg.ACL.PolicyPath)
+		err = app.LoadACLPolicy(aclPath)
+		if err != nil {
+			log.Fatal().
+				Str("path", aclPath).
+				Err(err).
+				Msg("Could not load the ACL policy")
+		}
 	}
 
 	return app, nil
 }
 
-func newHeadscaleCLIWithConfig() (context.Context, v1.HeadscaleServiceClient, *grpc.ClientConn, context.CancelFunc) {
-	cfg, err := types.LoadCLIConfig()
+func getHeadscaleCLIClient() (context.Context, v1.HeadscaleServiceClient, *grpc.ClientConn, context.CancelFunc) {
+	cfg, err := headscale.GetHeadscaleConfig()
 	if err != nil {
 		log.Fatal().
 			Err(err).
@@ -62,7 +70,7 @@ func newHeadscaleCLIWithConfig() (context.Context, v1.HeadscaleServiceClient, *g
 
 	address := cfg.CLI.Address
 
-	// If the address is not set, we assume that we are on the server hosting hscontrol.
+	// If the address is not set, we assume that we are on the server hosting headscale.
 	if address == "" {
 		log.Debug().
 			Str("socket", cfg.UnixSocket).
@@ -70,23 +78,10 @@ func newHeadscaleCLIWithConfig() (context.Context, v1.HeadscaleServiceClient, *g
 
 		address = cfg.UnixSocket
 
-		// Try to give the user better feedback if we cannot write to the headscale
-		// socket.
-		socket, err := os.OpenFile(cfg.UnixSocket, os.O_WRONLY, SocketWritePermissions) // nolint
-		if err != nil {
-			if os.IsPermission(err) {
-				log.Fatal().
-					Err(err).
-					Str("socket", cfg.UnixSocket).
-					Msgf("Unable to read/write to headscale socket, do you have the correct permissions?")
-			}
-		}
-		socket.Close()
-
 		grpcOptions = append(
 			grpcOptions,
 			grpc.WithTransportCredentials(insecure.NewCredentials()),
-			grpc.WithContextDialer(util.GrpcSocketDialer),
+			grpc.WithContextDialer(headscale.GrpcSocketDialer),
 		)
 	} else {
 		// If we are not connecting to a local server, require an API key for authentication
@@ -130,47 +125,42 @@ func newHeadscaleCLIWithConfig() (context.Context, v1.HeadscaleServiceClient, *g
 	return ctx, client, conn, cancel
 }
 
-func output(result interface{}, override string, outputFormat string) string {
+func SuccessOutput(result interface{}, override string, outputFormat string) {
 	var jsonBytes []byte
 	var err error
 	switch outputFormat {
 	case "json":
 		jsonBytes, err = json.MarshalIndent(result, "", "\t")
 		if err != nil {
-			log.Fatal().Err(err).Msg("failed to unmarshal output")
+			log.Fatal().Err(err)
 		}
 	case "json-line":
 		jsonBytes, err = json.Marshal(result)
 		if err != nil {
-			log.Fatal().Err(err).Msg("failed to unmarshal output")
+			log.Fatal().Err(err)
 		}
 	case "yaml":
 		jsonBytes, err = yaml.Marshal(result)
 		if err != nil {
-			log.Fatal().Err(err).Msg("failed to unmarshal output")
+			log.Fatal().Err(err)
 		}
 	default:
-		// nolint
-		return override
+		//nolint
+		fmt.Println(override)
+
+		return
 	}
 
-	return string(jsonBytes)
+	//nolint
+	fmt.Println(string(jsonBytes))
 }
 
-// SuccessOutput prints the result to stdout and exits with status code 0.
-func SuccessOutput(result interface{}, override string, outputFormat string) {
-	fmt.Println(output(result, override, outputFormat))
-	os.Exit(0)
-}
-
-// ErrorOutput prints an error message to stderr and exits with status code 1.
 func ErrorOutput(errResult error, override string, outputFormat string) {
 	type errOutput struct {
 		Error string `json:"error"`
 	}
 
-	fmt.Fprintf(os.Stderr, "%s\n", output(errOutput{errResult.Error()}, override, outputFormat))
-	os.Exit(1)
+	SuccessOutput(errOutput{errResult.Error()}, override, outputFormat)
 }
 
 func HasMachineOutputFlag() bool {
@@ -200,3 +190,13 @@ func (t tokenAuth) GetRequestMetadata(
 func (tokenAuth) RequireTransportSecurity() bool {
 	return true
 }
+
+func contains[T string](ts []T, t T) bool {
+	for _, v := range ts {
+		if reflect.DeepEqual(v, t) {
+			return true
+		}
+	}
+
+	return false
+}

cmd/headscale/cli/version.go

@@ -1,10 +1,11 @@
 package cli
 
 import (
-	"github.com/juanfont/headscale/hscontrol/types"
 	"github.com/spf13/cobra"
 )
 
+var Version = "dev"
+
 func init() {
 	rootCmd.AddCommand(versionCmd)
 }
@@ -15,9 +16,6 @@ var versionCmd = &cobra.Command{
 	Long:  "The version of headscale.",
 	Run: func(cmd *cobra.Command, args []string) {
 		output, _ := cmd.Flags().GetString("output")
-		SuccessOutput(map[string]string{
-			"version": types.Version,
-			"commit":  types.GitCommitHash,
-		}, types.Version, output)
+		SuccessOutput(map[string]string{"version": Version}, Version, output)
 	},
 }

cmd/headscale/headscale.go

@@ -4,7 +4,7 @@ import (
 	"os"
 	"time"
 
-	"github.com/jagottsicher/termcolor"
+	"github.com/efekarakus/termcolor"
 	"github.com/juanfont/headscale/cmd/headscale/cli"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
@@ -34,7 +34,7 @@ func main() {
 
 	zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
 	log.Logger = log.Output(zerolog.ConsoleWriter{
-		Out:        os.Stderr,
+		Out:        os.Stdout,
 		TimeFormat: time.RFC3339,
 		NoColor:    !colors,
 	})

cmd/headscale/headscale_test.go

@@ -2,12 +2,13 @@ package main
 
 import (
 	"io/fs"
+	"io/ioutil"
 	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 
-	"github.com/juanfont/headscale/hscontrol/types"
-	"github.com/juanfont/headscale/hscontrol/util"
+	"github.com/juanfont/headscale"
 	"github.com/spf13/viper"
 	"gopkg.in/check.v1"
 )
@@ -27,7 +28,7 @@ func (s *Suite) TearDownSuite(c *check.C) {
 }
 
 func (*Suite) TestConfigFileLoading(c *check.C) {
-	tmpDir, err := os.MkdirTemp("", "headscale")
+	tmpDir, err := ioutil.TempDir("", "headscale")
 	if err != nil {
 		c.Fatal(err)
 	}
@@ -50,20 +51,21 @@ func (*Suite) TestConfigFileLoading(c *check.C) {
 	}
 
 	// Load example config, it should load without validation errors
-	err = types.LoadConfig(cfgFile, true)
+	err = headscale.LoadConfig(cfgFile, true)
 	c.Assert(err, check.IsNil)
 
 	// Test that config file was interpreted correctly
 	c.Assert(viper.GetString("server_url"), check.Equals, "http://127.0.0.1:8080")
-	c.Assert(viper.GetString("listen_addr"), check.Equals, "127.0.0.1:8080")
+	c.Assert(viper.GetString("listen_addr"), check.Equals, "0.0.0.0:8080")
 	c.Assert(viper.GetString("metrics_listen_addr"), check.Equals, "127.0.0.1:9090")
-	c.Assert(viper.GetString("database.type"), check.Equals, "sqlite")
-	c.Assert(viper.GetString("database.sqlite.path"), check.Equals, "/var/lib/headscale/db.sqlite")
+	c.Assert(viper.GetString("db_type"), check.Equals, "sqlite3")
+	c.Assert(viper.GetString("db_path"), check.Equals, "/var/lib/headscale/db.sqlite")
 	c.Assert(viper.GetString("tls_letsencrypt_hostname"), check.Equals, "")
 	c.Assert(viper.GetString("tls_letsencrypt_listen"), check.Equals, ":http")
 	c.Assert(viper.GetString("tls_letsencrypt_challenge_type"), check.Equals, "HTTP-01")
+	c.Assert(viper.GetStringSlice("dns_config.nameservers")[0], check.Equals, "1.1.1.1")
 	c.Assert(
-		util.GetFileMode("unix_socket_permission"),
+		headscale.GetFileMode("unix_socket_permission"),
 		check.Equals,
 		fs.FileMode(0o770),
 	)
@@ -71,7 +73,7 @@ func (*Suite) TestConfigFileLoading(c *check.C) {
 }
 
 func (*Suite) TestConfigLoading(c *check.C) {
-	tmpDir, err := os.MkdirTemp("", "headscale")
+	tmpDir, err := ioutil.TempDir("", "headscale")
 	if err != nil {
 		c.Fatal(err)
 	}
@@ -92,23 +94,108 @@ func (*Suite) TestConfigLoading(c *check.C) {
 	}
 
 	// Load example config, it should load without validation errors
-	err = types.LoadConfig(tmpDir, false)
+	err = headscale.LoadConfig(tmpDir, false)
 	c.Assert(err, check.IsNil)
 
 	// Test that config file was interpreted correctly
 	c.Assert(viper.GetString("server_url"), check.Equals, "http://127.0.0.1:8080")
-	c.Assert(viper.GetString("listen_addr"), check.Equals, "127.0.0.1:8080")
+	c.Assert(viper.GetString("listen_addr"), check.Equals, "0.0.0.0:8080")
 	c.Assert(viper.GetString("metrics_listen_addr"), check.Equals, "127.0.0.1:9090")
-	c.Assert(viper.GetString("database.type"), check.Equals, "sqlite")
-	c.Assert(viper.GetString("database.sqlite.path"), check.Equals, "/var/lib/headscale/db.sqlite")
+	c.Assert(viper.GetString("db_type"), check.Equals, "sqlite3")
+	c.Assert(viper.GetString("db_path"), check.Equals, "/var/lib/headscale/db.sqlite")
 	c.Assert(viper.GetString("tls_letsencrypt_hostname"), check.Equals, "")
 	c.Assert(viper.GetString("tls_letsencrypt_listen"), check.Equals, ":http")
 	c.Assert(viper.GetString("tls_letsencrypt_challenge_type"), check.Equals, "HTTP-01")
+	c.Assert(viper.GetStringSlice("dns_config.nameservers")[0], check.Equals, "1.1.1.1")
 	c.Assert(
-		util.GetFileMode("unix_socket_permission"),
+		headscale.GetFileMode("unix_socket_permission"),
 		check.Equals,
 		fs.FileMode(0o770),
 	)
 	c.Assert(viper.GetBool("logtail.enabled"), check.Equals, false)
 	c.Assert(viper.GetBool("randomize_client_port"), check.Equals, false)
 }
+
+func (*Suite) TestDNSConfigLoading(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "headscale")
+	if err != nil {
+		c.Fatal(err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	path, err := os.Getwd()
+	if err != nil {
+		c.Fatal(err)
+	}
+
+	// Symlink the example config file
+	err = os.Symlink(
+		filepath.Clean(path+"/../../config-example.yaml"),
+		filepath.Join(tmpDir, "config.yaml"),
+	)
+	if err != nil {
+		c.Fatal(err)
+	}
+
+	// Load example config, it should load without validation errors
+	err = headscale.LoadConfig(tmpDir, false)
+	c.Assert(err, check.IsNil)
+
+	dnsConfig, baseDomain := headscale.GetDNSConfig()
+
+	c.Assert(dnsConfig.Nameservers[0].String(), check.Equals, "1.1.1.1")
+	c.Assert(dnsConfig.Resolvers[0].Addr, check.Equals, "1.1.1.1")
+	c.Assert(dnsConfig.Proxied, check.Equals, true)
+	c.Assert(baseDomain, check.Equals, "example.com")
+}
+
+func writeConfig(c *check.C, tmpDir string, configYaml []byte) {
+	// Populate a custom config file
+	configFile := filepath.Join(tmpDir, "config.yaml")
+	err := ioutil.WriteFile(configFile, configYaml, 0o600)
+	if err != nil {
+		c.Fatalf("Couldn't write file %s", configFile)
+	}
+}
+
+func (*Suite) TestTLSConfigValidation(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "headscale")
+	if err != nil {
+		c.Fatal(err)
+	}
+	// defer os.RemoveAll(tmpDir)
+
+	configYaml := []byte(
+		"---\ntls_letsencrypt_hostname: \"example.com\"\ntls_letsencrypt_challenge_type: \"\"\ntls_cert_path: \"abc.pem\"",
+	)
+	writeConfig(c, tmpDir, configYaml)
+
+	// Check configuration validation errors (1)
+	err = headscale.LoadConfig(tmpDir, false)
+	c.Assert(err, check.NotNil)
+	// check.Matches can not handle multiline strings
+	tmp := strings.ReplaceAll(err.Error(), "\n", "***")
+	c.Assert(
+		tmp,
+		check.Matches,
+		".*Fatal config error: set either tls_letsencrypt_hostname or tls_cert_path/tls_key_path, not both.*",
+	)
+	c.Assert(
+		tmp,
+		check.Matches,
+		".*Fatal config error: the only supported values for tls_letsencrypt_challenge_type are.*",
+	)
+	c.Assert(
+		tmp,
+		check.Matches,
+		".*Fatal config error: server_url must start with https:// or http://.*",
+	)
+
+	// Check configuration validation errors (2)
+	configYaml = []byte(
+		"---\nserver_url: \"http://127.0.0.1:8080\"\ntls_letsencrypt_hostname: \"example.com\"\ntls_letsencrypt_challenge_type: \"TLS-ALPN-01\"",
+	)
+	writeConfig(c, tmpDir, configYaml)
+	err = headscale.LoadConfig(tmpDir, false)
+	c.Assert(err, check.IsNil)
+}

config-example.yaml

@@ -14,12 +14,12 @@ server_url: http://127.0.0.1:8080
 
 # Address to listen to / bind to on the server
 #
-# For production:
-# listen_addr: 0.0.0.0:8080
-listen_addr: 127.0.0.1:8080
+listen_addr: 0.0.0.0:8080
 
-# Address to listen to /metrics and /debug, you may want
-# to keep this endpoint private to your internal network
+# Address to listen to /metrics, you may want
+# to keep this endpoint private to your internal
+# network
+#
 metrics_listen_addr: 127.0.0.1:9090
 
 # Address to listen for gRPC.
@@ -27,10 +27,7 @@ metrics_listen_addr: 127.0.0.1:9090
 # remotely with the CLI
 # Note: Remote access _only_ works if you have
 # valid certificates.
-#
-# For production:
-# grpc_listen_addr: 0.0.0.0:50443
-grpc_listen_addr: 127.0.0.1:50443
+grpc_listen_addr: 0.0.0.0:50443
 
 # Allow the gRPC admin interface to run in INSECURE
 # mode. This is not recommended as the traffic will
@@ -38,31 +35,18 @@ grpc_listen_addr: 127.0.0.1:50443
 # are doing.
 grpc_allow_insecure: false
 
-# The Noise section includes specific configuration for the
-# TS2021 Noise protocol
-noise:
-  # The Noise private key is used to encrypt the traffic between headscale and
-  # Tailscale clients when using the new Noise-based protocol. A missing key
-  # will be automatically generated.
-  private_key_path: /var/lib/headscale/noise_private.key
+# Private key used encrypt the traffic between headscale
+# and Tailscale clients.
+# The private key file which will be
+# autogenerated if it's missing
+private_key_path: /var/lib/headscale/private.key
 
 # List of IP prefixes to allocate tailaddresses from.
 # Each prefix consists of either an IPv4 or IPv6 address,
 # and the associated prefix length, delimited by a slash.
-# It must be within IP ranges supported by the Tailscale
-# client - i.e., subnets of 100.64.0.0/10 and fd7a:115c:a1e0::/48.
-# See below:
-# IPv6: https://github.com/tailscale/tailscale/blob/22ebb25e833264f58d7c3f534a8b166894a89536/net/tsaddr/tsaddr.go#LL81C52-L81C71
-# IPv4: https://github.com/tailscale/tailscale/blob/22ebb25e833264f58d7c3f534a8b166894a89536/net/tsaddr/tsaddr.go#L33
-# Any other range is NOT supported, and it will cause unexpected issues.
-prefixes:
-  v4: 100.64.0.0/10
-  v6: fd7a:115c:a1e0::/48
-
-  # Strategy used for allocation of IPs to nodes, available options:
-  # - sequential (default): assigns the next free IP from the previous given IP.
-  # - random: assigns the next free IP from a pseudo-random IP generator (crypto/rand).
-  allocation: sequential
+ip_prefixes:
+  - fd7a:115c:a1e0::/48
+  - 100.64.0.0/10
 
 # DERP is a relay system that Tailscale uses when a direct
 # connection cannot be established.
@@ -85,26 +69,12 @@ derp:
     region_code: "headscale"
     region_name: "Headscale Embedded DERP"
 
-    # Listens over UDP at the configured address for STUN connections - to help with NAT traversal.
+    # Listens in UDP at the configured address for STUN connections to help on NAT traversal.
     # When the embedded DERP server is enabled stun_listen_addr MUST be defined.
     #
     # For more details on how this works, check this great article: https://tailscale.com/blog/how-tailscale-works/
     stun_listen_addr: "0.0.0.0:3478"
 
-    # Private key used to encrypt the traffic between headscale DERP and
-    # Tailscale clients. A missing key will be automatically generated.
-    private_key_path: /var/lib/headscale/derp_server_private.key
-
-    # This flag can be used, so the DERP map entry for the embedded DERP server is not written automatically,
-    # it enables the creation of your very own DERP map entry using a locally available file with the parameter DERP.paths
-    # If you enable the DERP server and set this to false, it is required to add the DERP server to the DERP map using DERP.paths
-    automatically_add_embedded_derp_region: true
-
-    # For better connection stability (especially when using an Exit-Node and DNS is not working),
-    # it is possible to optionally add the public IPv4 and IPv6 address to the Derp-Map using:
-    ipv4: 1.2.3.4
-    ipv6: 2001:db8::1
-
   # List of externally available DERP maps encoded in JSON
   urls:
     - https://controlplane.tailscale.com/derpmap/default
@@ -133,59 +103,23 @@ disable_check_updates: false
 # Time before an inactive ephemeral node is deleted?
 ephemeral_node_inactivity_timeout: 30m
 
-database:
-  # Database type. Available options: sqlite, postgres
-  # Please note that using Postgres is highly discouraged as it is only supported for legacy reasons.
-  # All new development, testing and optimisations are done with SQLite in mind.
-  type: sqlite
+# Period to check for node updates in the tailnet. A value too low will severily affect
+# CPU consumption of Headscale. A value too high (over 60s) will cause problems
+# to the nodes, as they won't get updates or keep alive messages in time.
+# In case of doubts, do not touch the default 10s.
+node_update_check_interval: 10s
 
-  # Enable debug mode. This setting requires the log.level to be set to "debug" or "trace".
-  debug: false
+# SQLite config
+db_type: sqlite3
+db_path: /var/lib/headscale/db.sqlite
 
-  # GORM configuration settings.
-  gorm:
-    # Enable prepared statements.
-    prepare_stmt: true
-
-    # Enable parameterized queries.
-    parameterized_queries: true
-
-    # Skip logging "record not found" errors.
-    skip_err_record_not_found: true
-
-    # Threshold for slow queries in milliseconds.
-    slow_threshold: 1000
-
-  # SQLite config
-  sqlite:
-    path: /var/lib/headscale/db.sqlite
-
-    # Enable WAL mode for SQLite. This is recommended for production environments.
-    # https://www.sqlite.org/wal.html
-    write_ahead_log: true
-
-    # Maximum number of WAL file frames before the WAL file is automatically checkpointed.
-    # https://www.sqlite.org/c3ref/wal_autocheckpoint.html
-    # Set to 0 to disable automatic checkpointing.
-    wal_autocheckpoint: 1000
-
-  # # Postgres config
-  # Please note that using Postgres is highly discouraged as it is only supported for legacy reasons.
-  # See database.type for more information.
-  # postgres:
-  #   # If using a Unix socket to connect to Postgres, set the socket path in the 'host' field and leave 'port' blank.
-  #   host: localhost
-  #   port: 5432
-  #   name: headscale
-  #   user: foo
-  #   pass: bar
-  #   max_open_conns: 10
-  #   max_idle_conns: 10
-  #   conn_max_idle_time_secs: 3600
-
-  #   # If other 'sslmode' is required instead of 'require(true)' and 'disabled(false)', set the 'sslmode' you need
-  #   # in the 'ssl' field. Refers to https://www.postgresql.org/docs/current/libpq-ssl.html Table 34.1.
-  #   ssl: false
+# # Postgres config
+# db_type: postgres
+# db_host: localhost
+# db_port: 5432
+# db_name: headscale
+# db_user: foo
+# db_pass: bar
 
 ### TLS configuration
 #
@@ -203,17 +137,23 @@ acme_email: ""
 # Domain name to request a TLS certificate for:
 tls_letsencrypt_hostname: ""
 
+# Client (Tailscale/Browser) authentication mode (mTLS)
+# Acceptable values:
+# - disabled: client authentication disabled
+# - relaxed: client certificate is required but not verified
+# - enforced: client certificate is required and verified
+tls_client_auth_mode: relaxed
+
 # Path to store certificates and metadata needed by
 # letsencrypt
-# For production:
 tls_letsencrypt_cache_dir: /var/lib/headscale/cache
 
 # Type of ACME challenge to use, currently supported types:
 # HTTP-01 or TLS-ALPN-01
-# See: docs/ref/tls.md for more information
+# See [docs/tls.md](docs/tls.md) for more information
 tls_letsencrypt_challenge_type: HTTP-01
 # When HTTP-01 challenge is chosen, letsencrypt must set up a
-# verification endpoint, and it will be listening on:
+# verification endpoint, and it will be listning on:
 # :http = port 80
 tls_letsencrypt_listen: ":http"
 
@@ -221,22 +161,12 @@ tls_letsencrypt_listen: ":http"
 tls_cert_path: ""
 tls_key_path: ""
 
-log:
-  # Output formatting for logs: text or json
-  format: text
-  level: info
+log_level: info
 
-## Policy
-# headscale supports Tailscale's ACL policies.
-# Please have a look to their KB to better
-# understand the concepts: https://tailscale.com/kb/1018/acls/
-policy:
-  # The mode can be "file" or "database" that defines
-  # where the ACL policies are stored and read from.
-  mode: file
-  # If the mode is set to "file", the path to a
-  # HuJSON file containing ACL policies.
-  path: ""
+# Path to a file containg ACL policies.
+# ACLs can be defined as YAML or HUJSON.
+# https://tailscale.com/kb/1018/acls/
+acl_policy_path: ""
 
 ## DNS
 #
@@ -247,77 +177,38 @@ policy:
 # - https://tailscale.com/kb/1081/magicdns/
 # - https://tailscale.com/blog/2021-09-private-dns-with-magicdns/
 #
-# Please note that for the DNS configuration to have any effect,
-# clients must have the `--accept-dns=true` option enabled. This is the
-# default for the Tailscale client. This option is enabled by default
-# in the Tailscale client.
-#
-# Setting _any_ of the configuration and `--accept-dns=true` on the
-# clients will integrate with the DNS manager on the client or
-# overwrite /etc/resolv.conf.
-# https://tailscale.com/kb/1235/resolv-conf
-#
-# If you want stop Headscale from managing the DNS configuration
-# all the fields under `dns` should be set to empty values.
-dns:
+dns_config:
+  # List of DNS servers to expose to clients.
+  nameservers:
+    - 1.1.1.1
+
+  # Split DNS (see https://tailscale.com/kb/1054/dns/),
+  # list of search domains and the DNS to query for each one.
+  #
+  # restricted_nameservers:
+  #   foo.bar.com:
+  #     - 1.1.1.1
+  #   darp.headscale.net:
+  #     - 1.1.1.1
+  #     - 8.8.8.8
+
+  # Search domains to inject.
+  domains: []
+
   # Whether to use [MagicDNS](https://tailscale.com/kb/1081/magicdns/).
+  # Only works if there is at least a nameserver defined.
   magic_dns: true
 
   # Defines the base domain to create the hostnames for MagicDNS.
-  # This domain _must_ be different from the server_url domain.
-  # `base_domain` must be a FQDN, without the trailing dot.
+  # `base_domain` must be a FQDNs, without the trailing dot.
   # The FQDN of the hosts will be
-  # `hostname.base_domain` (e.g., _myhost.example.com_).
+  # `hostname.namespace.base_domain` (e.g., _myhost.mynamespace.example.com_).
   base_domain: example.com
 
-  # Whether to use the local DNS settings of a node (default) or override the
-  # local DNS settings and force the use of Headscale's DNS configuration.
-  override_local_dns: false
-
-  # List of DNS servers to expose to clients.
-  nameservers:
-    global:
-      - 1.1.1.1
-      - 1.0.0.1
-      - 2606:4700:4700::1111
-      - 2606:4700:4700::1001
-
-      # NextDNS (see https://tailscale.com/kb/1218/nextdns/).
-      # "abc123" is example NextDNS ID, replace with yours.
-      # - https://dns.nextdns.io/abc123
-
-    # Split DNS (see https://tailscale.com/kb/1054/dns/),
-    # a map of domains and which DNS server to use for each.
-    split:
-      {}
-      # foo.bar.com:
-      #   - 1.1.1.1
-      # darp.headscale.net:
-      #   - 1.1.1.1
-      #   - 8.8.8.8
-
-  # Set custom DNS search domains. With MagicDNS enabled,
-  # your tailnet base_domain is always the first search domain.
-  search_domains: []
-
-  # Extra DNS records
-  # so far only A and AAAA records are supported (on the tailscale side)
-  # See: docs/ref/dns.md
-  extra_records: []
-  #   - name: "grafana.myvpn.example.com"
-  #     type: "A"
-  #     value: "100.64.0.3"
-  #
-  #   # you can also put it in one line
-  #   - { name: "prometheus.myvpn.example.com", type: "A", value: "100.64.0.3" }
-  #
-  # Alternatively, extra DNS records can be loaded from a JSON file.
-  # Headscale processes this file on each change.
-  # extra_records_path: /var/lib/headscale/extra-records.json
-
 # Unix socket used for the CLI to connect without authentication
-# Note: for production you will want to set this to something like:
-unix_socket: /var/run/headscale/headscale.sock
+# Note: for local development, you probably want to change this to:
+# unix_socket: ./headscale.sock
+unix_socket: /var/run/headscale.sock
 unix_socket_permission: "0770"
 #
 # headscale supports experimental OpenID connect support,
@@ -325,56 +216,31 @@ unix_socket_permission: "0770"
 # help us test it.
 # OpenID Connect
 # oidc:
-#   only_start_if_oidc_is_available: true
 #   issuer: "https://your-oidc.issuer.com/path"
 #   client_id: "your-oidc-client-id"
 #   client_secret: "your-oidc-client-secret"
-#   # Alternatively, set `client_secret_path` to read the secret from the file.
-#   # It resolves environment variables, making integration to systemd's
-#   # `LoadCredential` straightforward:
-#   client_secret_path: "${CREDENTIALS_DIRECTORY}/oidc_client_secret"
-#   # client_secret and client_secret_path are mutually exclusive.
 #
-#   # The amount of time from a node is authenticated with OpenID until it
-#   # expires and needs to reauthenticate.
-#   # Setting the value to "0" will mean no expiry.
-#   expiry: 180d
-#
-#   # Use the expiry from the token received from OpenID when the user logged
-#   # in, this will typically lead to frequent need to reauthenticate and should
-#   # only been enabled if you know what you are doing.
-#   # Note: enabling this will cause `oidc.expiry` to be ignored.
-#   use_expiry_from_token: false
-#
-#   # Customize the scopes used in the OIDC flow, defaults to "openid", "profile" and "email" and add custom query
-#   # parameters to the Authorize Endpoint request. Scopes default to "openid", "profile" and "email".
+#   Customize the scopes used in the OIDC flow, defaults to "openid", "profile" and "email" and add custom query
+#   parameters to the Authorize Endpoint request. Scopes default to "openid", "profile" and "email".
 #
 #   scope: ["openid", "profile", "email", "custom"]
 #   extra_params:
 #     domain_hint: example.com
 #
-#   # List allowed principal domains and/or users. If an authenticated user's domain is not in this list, the
-#   # authentication request will be rejected.
+#   List allowed principal domains and/or users. If an authenticated user's domain is not in this list, the
+#   authentication request will be rejected.
 #
 #   allowed_domains:
 #     - example.com
-#   # Note: Groups from keycloak have a leading '/'
-#   allowed_groups:
-#     - /headscale
 #   allowed_users:
 #     - alice@example.com
 #
-#   # Optional: PKCE (Proof Key for Code Exchange) configuration
-#   # PKCE adds an additional layer of security to the OAuth 2.0 authorization code flow
-#   # by preventing authorization code interception attacks
-#   # See https://datatracker.ietf.org/doc/html/rfc7636
-#   pkce:
-#     # Enable or disable PKCE support (default: false)
-#     enabled: false
-#     # PKCE method to use:
-#     # - plain: Use plain code verifier
-#     # - S256: Use SHA256 hashed code verifier (default, recommended)
-#     method: S256
+#   If `strip_email_domain` is set to `true`, the domain part of the username email address will be removed.
+#   This will transform `first-name.last-name@example.com` to the namespace `first-name.last-name`
+#   If `strip_email_domain` is set to `false` the domain part will NOT be removed resulting to the following
+#   namespace: `first-name.last-name.example.com`
+#
+#   strip_email_domain: true
 
 # Logtail configuration
 # Logtail is Tailscales logging and auditing infrastructure, it allows the control panel

config.go

@@ -0,0 +1,543 @@
+package headscale
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io/fs"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/coreos/go-oidc/v3/oidc"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/viper"
+	"inet.af/netaddr"
+	"tailscale.com/tailcfg"
+	"tailscale.com/types/dnstype"
+)
+
+const (
+	tlsALPN01ChallengeType = "TLS-ALPN-01"
+	http01ChallengeType    = "HTTP-01"
+)
+
+// Config contains the initial Headscale configuration.
+type Config struct {
+	ServerURL                      string
+	Addr                           string
+	MetricsAddr                    string
+	GRPCAddr                       string
+	GRPCAllowInsecure              bool
+	EphemeralNodeInactivityTimeout time.Duration
+	NodeUpdateCheckInterval        time.Duration
+	IPPrefixes                     []netaddr.IPPrefix
+	PrivateKeyPath                 string
+	BaseDomain                     string
+	LogLevel                       zerolog.Level
+	DisableUpdateCheck             bool
+
+	DERP DERPConfig
+
+	DBtype string
+	DBpath string
+	DBhost string
+	DBport int
+	DBname string
+	DBuser string
+	DBpass string
+
+	TLS TLSConfig
+
+	ACMEURL   string
+	ACMEEmail string
+
+	DNSConfig *tailcfg.DNSConfig
+
+	UnixSocket           string
+	UnixSocketPermission fs.FileMode
+
+	OIDC OIDCConfig
+
+	LogTail             LogTailConfig
+	RandomizeClientPort bool
+
+	CLI CLIConfig
+
+	ACL ACLConfig
+}
+
+type TLSConfig struct {
+	CertPath       string
+	KeyPath        string
+	ClientAuthMode tls.ClientAuthType
+
+	LetsEncrypt LetsEncryptConfig
+}
+
+type LetsEncryptConfig struct {
+	Listen        string
+	Hostname      string
+	CacheDir      string
+	ChallengeType string
+}
+
+type OIDCConfig struct {
+	Issuer           string
+	ClientID         string
+	ClientSecret     string
+	Scope            []string
+	ExtraParams      map[string]string
+	AllowedDomains   []string
+	AllowedUsers     []string
+	StripEmaildomain bool
+}
+
+type DERPConfig struct {
+	ServerEnabled    bool
+	ServerRegionID   int
+	ServerRegionCode string
+	ServerRegionName string
+	STUNAddr         string
+	URLs             []url.URL
+	Paths            []string
+	AutoUpdate       bool
+	UpdateFrequency  time.Duration
+}
+
+type LogTailConfig struct {
+	Enabled bool
+}
+
+type CLIConfig struct {
+	Address  string
+	APIKey   string
+	Timeout  time.Duration
+	Insecure bool
+}
+
+type ACLConfig struct {
+	PolicyPath string
+}
+
+func LoadConfig(path string, isFile bool) error {
+	if isFile {
+		viper.SetConfigFile(path)
+	} else {
+		viper.SetConfigName("config")
+		if path == "" {
+			viper.AddConfigPath("/etc/headscale/")
+			viper.AddConfigPath("$HOME/.headscale")
+			viper.AddConfigPath(".")
+		} else {
+			// For testing
+			viper.AddConfigPath(path)
+		}
+	}
+
+	viper.SetEnvPrefix("headscale")
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+	viper.AutomaticEnv()
+
+	viper.SetDefault("tls_letsencrypt_cache_dir", "/var/www/.cache")
+	viper.SetDefault("tls_letsencrypt_challenge_type", http01ChallengeType)
+	viper.SetDefault("tls_client_auth_mode", "relaxed")
+
+	viper.SetDefault("log_level", "info")
+
+	viper.SetDefault("dns_config", nil)
+
+	viper.SetDefault("derp.server.enabled", false)
+	viper.SetDefault("derp.server.stun.enabled", true)
+
+	viper.SetDefault("unix_socket", "/var/run/headscale.sock")
+	viper.SetDefault("unix_socket_permission", "0o770")
+
+	viper.SetDefault("grpc_listen_addr", ":50443")
+	viper.SetDefault("grpc_allow_insecure", false)
+
+	viper.SetDefault("cli.timeout", "5s")
+	viper.SetDefault("cli.insecure", false)
+
+	viper.SetDefault("oidc.scope", []string{oidc.ScopeOpenID, "profile", "email"})
+	viper.SetDefault("oidc.strip_email_domain", true)
+
+	viper.SetDefault("logtail.enabled", false)
+	viper.SetDefault("randomize_client_port", false)
+
+	viper.SetDefault("ephemeral_node_inactivity_timeout", "120s")
+
+	viper.SetDefault("node_update_check_interval", "10s")
+
+	if err := viper.ReadInConfig(); err != nil {
+		log.Warn().Err(err).Msg("Failed to read configuration from disk")
+
+		return fmt.Errorf("fatal error reading config file: %w", err)
+	}
+
+	// Collect any validation errors and return them all at once
+	var errorText string
+	if (viper.GetString("tls_letsencrypt_hostname") != "") &&
+		((viper.GetString("tls_cert_path") != "") || (viper.GetString("tls_key_path") != "")) {
+		errorText += "Fatal config error: set either tls_letsencrypt_hostname or tls_cert_path/tls_key_path, not both\n"
+	}
+
+	if (viper.GetString("tls_letsencrypt_hostname") != "") &&
+		(viper.GetString("tls_letsencrypt_challenge_type") == tlsALPN01ChallengeType) &&
+		(!strings.HasSuffix(viper.GetString("listen_addr"), ":443")) {
+		// this is only a warning because there could be something sitting in front of headscale that redirects the traffic (e.g. an iptables rule)
+		log.Warn().
+			Msg("Warning: when using tls_letsencrypt_hostname with TLS-ALPN-01 as challenge type, headscale must be reachable on port 443, i.e. listen_addr should probably end in :443")
+	}
+
+	if (viper.GetString("tls_letsencrypt_challenge_type") != http01ChallengeType) &&
+		(viper.GetString("tls_letsencrypt_challenge_type") != tlsALPN01ChallengeType) {
+		errorText += "Fatal config error: the only supported values for tls_letsencrypt_challenge_type are HTTP-01 and TLS-ALPN-01\n"
+	}
+
+	if !strings.HasPrefix(viper.GetString("server_url"), "http://") &&
+		!strings.HasPrefix(viper.GetString("server_url"), "https://") {
+		errorText += "Fatal config error: server_url must start with https:// or http://\n"
+	}
+
+	_, authModeValid := LookupTLSClientAuthMode(
+		viper.GetString("tls_client_auth_mode"),
+	)
+
+	if !authModeValid {
+		errorText += fmt.Sprintf(
+			"Invalid tls_client_auth_mode supplied: %s. Accepted values: %s, %s, %s.",
+			viper.GetString("tls_client_auth_mode"),
+			DisabledClientAuth,
+			RelaxedClientAuth,
+			EnforcedClientAuth)
+	}
+
+	// Minimum inactivity time out is keepalive timeout (60s) plus a few seconds
+	// to avoid races
+	minInactivityTimeout, _ := time.ParseDuration("65s")
+	if viper.GetDuration("ephemeral_node_inactivity_timeout") <= minInactivityTimeout {
+		errorText += fmt.Sprintf(
+			"Fatal config error: ephemeral_node_inactivity_timeout (%s) is set too low, must be more than %s",
+			viper.GetString("ephemeral_node_inactivity_timeout"),
+			minInactivityTimeout,
+		)
+	}
+
+	maxNodeUpdateCheckInterval, _ := time.ParseDuration("60s")
+	if viper.GetDuration("node_update_check_interval") > maxNodeUpdateCheckInterval {
+		errorText += fmt.Sprintf(
+			"Fatal config error: node_update_check_interval (%s) is set too high, must be less than %s",
+			viper.GetString("node_update_check_interval"),
+			maxNodeUpdateCheckInterval,
+		)
+	}
+
+	if errorText != "" {
+		//nolint
+		return errors.New(strings.TrimSuffix(errorText, "\n"))
+	} else {
+		return nil
+	}
+}
+
+func GetTLSConfig() TLSConfig {
+	tlsClientAuthMode, _ := LookupTLSClientAuthMode(
+		viper.GetString("tls_client_auth_mode"),
+	)
+
+	return TLSConfig{
+		LetsEncrypt: LetsEncryptConfig{
+			Hostname: viper.GetString("tls_letsencrypt_hostname"),
+			Listen:   viper.GetString("tls_letsencrypt_listen"),
+			CacheDir: AbsolutePathFromConfigPath(
+				viper.GetString("tls_letsencrypt_cache_dir"),
+			),
+			ChallengeType: viper.GetString("tls_letsencrypt_challenge_type"),
+		},
+		CertPath: AbsolutePathFromConfigPath(
+			viper.GetString("tls_cert_path"),
+		),
+		KeyPath: AbsolutePathFromConfigPath(
+			viper.GetString("tls_key_path"),
+		),
+		ClientAuthMode: tlsClientAuthMode,
+	}
+}
+
+func GetDERPConfig() DERPConfig {
+	serverEnabled := viper.GetBool("derp.server.enabled")
+	serverRegionID := viper.GetInt("derp.server.region_id")
+	serverRegionCode := viper.GetString("derp.server.region_code")
+	serverRegionName := viper.GetString("derp.server.region_name")
+	stunAddr := viper.GetString("derp.server.stun_listen_addr")
+
+	if serverEnabled && stunAddr == "" {
+		log.Fatal().
+			Msg("derp.server.stun_listen_addr must be set if derp.server.enabled is true")
+	}
+
+	urlStrs := viper.GetStringSlice("derp.urls")
+
+	urls := make([]url.URL, len(urlStrs))
+	for index, urlStr := range urlStrs {
+		urlAddr, err := url.Parse(urlStr)
+		if err != nil {
+			log.Error().
+				Str("url", urlStr).
+				Err(err).
+				Msg("Failed to parse url, ignoring...")
+		}
+
+		urls[index] = *urlAddr
+	}
+
+	paths := viper.GetStringSlice("derp.paths")
+
+	autoUpdate := viper.GetBool("derp.auto_update_enabled")
+	updateFrequency := viper.GetDuration("derp.update_frequency")
+
+	return DERPConfig{
+		ServerEnabled:    serverEnabled,
+		ServerRegionID:   serverRegionID,
+		ServerRegionCode: serverRegionCode,
+		ServerRegionName: serverRegionName,
+		STUNAddr:         stunAddr,
+		URLs:             urls,
+		Paths:            paths,
+		AutoUpdate:       autoUpdate,
+		UpdateFrequency:  updateFrequency,
+	}
+}
+
+func GetLogTailConfig() LogTailConfig {
+	enabled := viper.GetBool("logtail.enabled")
+
+	return LogTailConfig{
+		Enabled: enabled,
+	}
+}
+
+func GetACLConfig() ACLConfig {
+	policyPath := viper.GetString("acl_policy_path")
+
+	return ACLConfig{
+		PolicyPath: policyPath,
+	}
+}
+
+func GetDNSConfig() (*tailcfg.DNSConfig, string) {
+	if viper.IsSet("dns_config") {
+		dnsConfig := &tailcfg.DNSConfig{}
+
+		if viper.IsSet("dns_config.nameservers") {
+			nameserversStr := viper.GetStringSlice("dns_config.nameservers")
+
+			nameservers := make([]netaddr.IP, len(nameserversStr))
+			resolvers := make([]*dnstype.Resolver, len(nameserversStr))
+
+			for index, nameserverStr := range nameserversStr {
+				nameserver, err := netaddr.ParseIP(nameserverStr)
+				if err != nil {
+					log.Error().
+						Str("func", "getDNSConfig").
+						Err(err).
+						Msgf("Could not parse nameserver IP: %s", nameserverStr)
+				}
+
+				nameservers[index] = nameserver
+				resolvers[index] = &dnstype.Resolver{
+					Addr: nameserver.String(),
+				}
+			}
+
+			dnsConfig.Nameservers = nameservers
+			dnsConfig.Resolvers = resolvers
+		}
+
+		if viper.IsSet("dns_config.restricted_nameservers") {
+			if len(dnsConfig.Nameservers) > 0 {
+				dnsConfig.Routes = make(map[string][]*dnstype.Resolver)
+				restrictedDNS := viper.GetStringMapStringSlice(
+					"dns_config.restricted_nameservers",
+				)
+				for domain, restrictedNameservers := range restrictedDNS {
+					restrictedResolvers := make(
+						[]*dnstype.Resolver,
+						len(restrictedNameservers),
+					)
+					for index, nameserverStr := range restrictedNameservers {
+						nameserver, err := netaddr.ParseIP(nameserverStr)
+						if err != nil {
+							log.Error().
+								Str("func", "getDNSConfig").
+								Err(err).
+								Msgf("Could not parse restricted nameserver IP: %s", nameserverStr)
+						}
+						restrictedResolvers[index] = &dnstype.Resolver{
+							Addr: nameserver.String(),
+						}
+					}
+					dnsConfig.Routes[domain] = restrictedResolvers
+				}
+			} else {
+				log.Warn().
+					Msg("Warning: dns_config.restricted_nameservers is set, but no nameservers are configured. Ignoring restricted_nameservers.")
+			}
+		}
+
+		if viper.IsSet("dns_config.domains") {
+			dnsConfig.Domains = viper.GetStringSlice("dns_config.domains")
+		}
+
+		if viper.IsSet("dns_config.magic_dns") {
+			magicDNS := viper.GetBool("dns_config.magic_dns")
+			if len(dnsConfig.Nameservers) > 0 {
+				dnsConfig.Proxied = magicDNS
+			} else if magicDNS {
+				log.Warn().
+					Msg("Warning: dns_config.magic_dns is set, but no nameservers are configured. Ignoring magic_dns.")
+			}
+		}
+
+		var baseDomain string
+		if viper.IsSet("dns_config.base_domain") {
+			baseDomain = viper.GetString("dns_config.base_domain")
+		} else {
+			baseDomain = "headscale.net" // does not really matter when MagicDNS is not enabled
+		}
+
+		return dnsConfig, baseDomain
+	}
+
+	return nil, ""
+}
+
+func GetHeadscaleConfig() (*Config, error) {
+	dnsConfig, baseDomain := GetDNSConfig()
+	derpConfig := GetDERPConfig()
+	logConfig := GetLogTailConfig()
+	randomizeClientPort := viper.GetBool("randomize_client_port")
+
+	configuredPrefixes := viper.GetStringSlice("ip_prefixes")
+	parsedPrefixes := make([]netaddr.IPPrefix, 0, len(configuredPrefixes)+1)
+
+	logLevelStr := viper.GetString("log_level")
+	logLevel, err := zerolog.ParseLevel(logLevelStr)
+	if err != nil {
+		logLevel = zerolog.DebugLevel
+	}
+
+	legacyPrefixField := viper.GetString("ip_prefix")
+	if len(legacyPrefixField) > 0 {
+		log.
+			Warn().
+			Msgf(
+				"%s, %s",
+				"use of 'ip_prefix' for configuration is deprecated",
+				"please see 'ip_prefixes' in the shipped example.",
+			)
+		legacyPrefix, err := netaddr.ParseIPPrefix(legacyPrefixField)
+		if err != nil {
+			panic(fmt.Errorf("failed to parse ip_prefix: %w", err))
+		}
+		parsedPrefixes = append(parsedPrefixes, legacyPrefix)
+	}
+
+	for i, prefixInConfig := range configuredPrefixes {
+		prefix, err := netaddr.ParseIPPrefix(prefixInConfig)
+		if err != nil {
+			panic(fmt.Errorf("failed to parse ip_prefixes[%d]: %w", i, err))
+		}
+		parsedPrefixes = append(parsedPrefixes, prefix)
+	}
+
+	prefixes := make([]netaddr.IPPrefix, 0, len(parsedPrefixes))
+	{
+		// dedup
+		normalizedPrefixes := make(map[string]int, len(parsedPrefixes))
+		for i, p := range parsedPrefixes {
+			normalized, _ := p.Range().Prefix()
+			normalizedPrefixes[normalized.String()] = i
+		}
+
+		// convert back to list
+		for _, i := range normalizedPrefixes {
+			prefixes = append(prefixes, parsedPrefixes[i])
+		}
+	}
+
+	if len(prefixes) < 1 {
+		prefixes = append(prefixes, netaddr.MustParseIPPrefix("100.64.0.0/10"))
+		log.Warn().
+			Msgf("'ip_prefixes' not configured, falling back to default: %v", prefixes)
+	}
+
+	return &Config{
+		ServerURL:          viper.GetString("server_url"),
+		Addr:               viper.GetString("listen_addr"),
+		MetricsAddr:        viper.GetString("metrics_listen_addr"),
+		GRPCAddr:           viper.GetString("grpc_listen_addr"),
+		GRPCAllowInsecure:  viper.GetBool("grpc_allow_insecure"),
+		DisableUpdateCheck: viper.GetBool("disable_check_updates"),
+		LogLevel:           logLevel,
+
+		IPPrefixes: prefixes,
+		PrivateKeyPath: AbsolutePathFromConfigPath(
+			viper.GetString("private_key_path"),
+		),
+		BaseDomain: baseDomain,
+
+		DERP: derpConfig,
+
+		EphemeralNodeInactivityTimeout: viper.GetDuration(
+			"ephemeral_node_inactivity_timeout",
+		),
+
+		NodeUpdateCheckInterval: viper.GetDuration(
+			"node_update_check_interval",
+		),
+
+		DBtype: viper.GetString("db_type"),
+		DBpath: AbsolutePathFromConfigPath(viper.GetString("db_path")),
+		DBhost: viper.GetString("db_host"),
+		DBport: viper.GetInt("db_port"),
+		DBname: viper.GetString("db_name"),
+		DBuser: viper.GetString("db_user"),
+		DBpass: viper.GetString("db_pass"),
+
+		TLS: GetTLSConfig(),
+
+		DNSConfig: dnsConfig,
+
+		ACMEEmail: viper.GetString("acme_email"),
+		ACMEURL:   viper.GetString("acme_url"),
+
+		UnixSocket:           viper.GetString("unix_socket"),
+		UnixSocketPermission: GetFileMode("unix_socket_permission"),
+
+		OIDC: OIDCConfig{
+			Issuer:           viper.GetString("oidc.issuer"),
+			ClientID:         viper.GetString("oidc.client_id"),
+			ClientSecret:     viper.GetString("oidc.client_secret"),
+			Scope:            viper.GetStringSlice("oidc.scope"),
+			ExtraParams:      viper.GetStringMapString("oidc.extra_params"),
+			AllowedDomains:   viper.GetStringSlice("oidc.allowed_domains"),
+			AllowedUsers:     viper.GetStringSlice("oidc.allowed_users"),
+			StripEmaildomain: viper.GetBool("oidc.strip_email_domain"),
+		},
+
+		LogTail:             logConfig,
+		RandomizeClientPort: randomizeClientPort,
+
+		CLI: CLIConfig{
+			Address:  viper.GetString("cli.address"),
+			APIKey:   viper.GetString("cli.api_key"),
+			Timeout:  viper.GetDuration("cli.timeout"),
+			Insecure: viper.GetBool("cli.insecure"),
+		},
+
+		ACL: GetACLConfig(),
+	}, nil
+}

db.go

@@ -0,0 +1,304 @@
+package headscale
+
+import (
+	"context"
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/glebarez/sqlite"
+	"github.com/rs/zerolog/log"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+	"inet.af/netaddr"
+	"tailscale.com/tailcfg"
+)
+
+const (
+	dbVersion        = "1"
+	errValueNotFound = Error("not found")
+)
+
+// KV is a key-value store in a psql table. For future use...
+type KV struct {
+	Key   string
+	Value string
+}
+
+func (h *Headscale) initDB() error {
+	db, err := h.openDB()
+	if err != nil {
+		return err
+	}
+	h.db = db
+
+	if h.dbType == Postgres {
+		db.Exec(`create extension if not exists "uuid-ossp";`)
+	}
+
+	_ = db.Migrator().RenameColumn(&Machine{}, "ip_address", "ip_addresses")
+	_ = db.Migrator().RenameColumn(&Machine{}, "name", "hostname")
+
+	// GivenName is used as the primary source of DNS names, make sure
+	// the field is populated and normalized if it was not when the
+	// machine was registered.
+	_ = db.Migrator().RenameColumn(&Machine{}, "nickname", "given_name")
+
+	// If the Machine table has a column for registered,
+	// find all occourences of "false" and drop them. Then
+	// remove the column.
+	if db.Migrator().HasColumn(&Machine{}, "registered") {
+		log.Info().
+			Msg(`Database has legacy "registered" column in machine, removing...`)
+
+		machines := Machines{}
+		if err := h.db.Not("registered").Find(&machines).Error; err != nil {
+			log.Error().Err(err).Msg("Error accessing db")
+		}
+
+		for _, machine := range machines {
+			log.Info().
+				Str("machine", machine.Hostname).
+				Str("machine_key", machine.MachineKey).
+				Msg("Deleting unregistered machine")
+			if err := h.db.Delete(&Machine{}, machine.ID).Error; err != nil {
+				log.Error().
+					Err(err).
+					Str("machine", machine.Hostname).
+					Str("machine_key", machine.MachineKey).
+					Msg("Error deleting unregistered machine")
+			}
+		}
+
+		err := db.Migrator().DropColumn(&Machine{}, "registered")
+		if err != nil {
+			log.Error().Err(err).Msg("Error dropping registered column")
+		}
+	}
+
+	err = db.AutoMigrate(&Machine{})
+	if err != nil {
+		return err
+	}
+
+	if db.Migrator().HasColumn(&Machine{}, "given_name") {
+		machines := Machines{}
+		if err := h.db.Find(&machines).Error; err != nil {
+			log.Error().Err(err).Msg("Error accessing db")
+		}
+
+		for item, machine := range machines {
+			if machine.GivenName == "" {
+				normalizedHostname, err := NormalizeToFQDNRules(
+					machine.Hostname,
+					h.cfg.OIDC.StripEmaildomain,
+				)
+				if err != nil {
+					log.Error().
+						Caller().
+						Str("hostname", machine.Hostname).
+						Err(err).
+						Msg("Failed to normalize machine hostname in DB migration")
+				}
+
+				err = h.RenameMachine(&machines[item], normalizedHostname)
+				if err != nil {
+					log.Error().
+						Caller().
+						Str("hostname", machine.Hostname).
+						Err(err).
+						Msg("Failed to save normalized machine name in DB migration")
+				}
+			}
+		}
+	}
+
+	err = db.AutoMigrate(&KV{})
+	if err != nil {
+		return err
+	}
+
+	err = db.AutoMigrate(&Namespace{})
+	if err != nil {
+		return err
+	}
+
+	err = db.AutoMigrate(&PreAuthKey{})
+	if err != nil {
+		return err
+	}
+
+	_ = db.Migrator().DropTable("shared_machines")
+
+	err = db.AutoMigrate(&APIKey{})
+	if err != nil {
+		return err
+	}
+
+	err = h.setValue("db_version", dbVersion)
+
+	return err
+}
+
+func (h *Headscale) openDB() (*gorm.DB, error) {
+	var db *gorm.DB
+	var err error
+
+	var log logger.Interface
+	if h.dbDebug {
+		log = logger.Default
+	} else {
+		log = logger.Default.LogMode(logger.Silent)
+	}
+
+	switch h.dbType {
+	case Sqlite:
+		db, err = gorm.Open(
+			sqlite.Open(h.dbString+"?_synchronous=1&_journal_mode=WAL"),
+			&gorm.Config{
+				DisableForeignKeyConstraintWhenMigrating: true,
+				Logger:                                   log,
+			},
+		)
+
+		db.Exec("PRAGMA foreign_keys=ON")
+
+		// The pure Go SQLite library does not handle locking in
+		// the same way as the C based one and we cant use the gorm
+		// connection pool as of 2022/02/23.
+		sqlDB, _ := db.DB()
+		sqlDB.SetMaxIdleConns(1)
+		sqlDB.SetMaxOpenConns(1)
+		sqlDB.SetConnMaxIdleTime(time.Hour)
+
+	case Postgres:
+		db, err = gorm.Open(postgres.Open(h.dbString), &gorm.Config{
+			DisableForeignKeyConstraintWhenMigrating: true,
+			Logger:                                   log,
+		})
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return db, nil
+}
+
+// getValue returns the value for the given key in KV.
+func (h *Headscale) getValue(key string) (string, error) {
+	var row KV
+	if result := h.db.First(&row, "key = ?", key); errors.Is(
+		result.Error,
+		gorm.ErrRecordNotFound,
+	) {
+		return "", errValueNotFound
+	}
+
+	return row.Value, nil
+}
+
+// setValue sets value for the given key in KV.
+func (h *Headscale) setValue(key string, value string) error {
+	keyValue := KV{
+		Key:   key,
+		Value: value,
+	}
+
+	if _, err := h.getValue(key); err == nil {
+		h.db.Model(&keyValue).Where("key = ?", key).Update("value", value)
+
+		return nil
+	}
+
+	if err := h.db.Create(keyValue).Error; err != nil {
+		return fmt.Errorf("failed to create key value pair in the database: %w", err)
+	}
+
+	return nil
+}
+
+func (h *Headscale) pingDB() error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+	db, err := h.db.DB()
+	if err != nil {
+		return err
+	}
+
+	return db.PingContext(ctx)
+}
+
+// This is a "wrapper" type around tailscales
+// Hostinfo to allow us to add database "serialization"
+// methods. This allows us to use a typed values throughout
+// the code and not have to marshal/unmarshal and error
+// check all over the code.
+type HostInfo tailcfg.Hostinfo
+
+func (hi *HostInfo) Scan(destination interface{}) error {
+	switch value := destination.(type) {
+	case []byte:
+		return json.Unmarshal(value, hi)
+
+	case string:
+		return json.Unmarshal([]byte(value), hi)
+
+	default:
+		return fmt.Errorf("%w: unexpected data type %T", errMachineAddressesInvalid, destination)
+	}
+}
+
+// Value return json value, implement driver.Valuer interface.
+func (hi HostInfo) Value() (driver.Value, error) {
+	bytes, err := json.Marshal(hi)
+
+	return string(bytes), err
+}
+
+type IPPrefixes []netaddr.IPPrefix
+
+func (i *IPPrefixes) Scan(destination interface{}) error {
+	switch value := destination.(type) {
+	case []byte:
+		return json.Unmarshal(value, i)
+
+	case string:
+		return json.Unmarshal([]byte(value), i)
+
+	default:
+		return fmt.Errorf("%w: unexpected data type %T", errMachineAddressesInvalid, destination)
+	}
+}
+
+// Value return json value, implement driver.Valuer interface.
+func (i IPPrefixes) Value() (driver.Value, error) {
+	bytes, err := json.Marshal(i)
+
+	return string(bytes), err
+}
+
+type StringList []string
+
+func (i *StringList) Scan(destination interface{}) error {
+	switch value := destination.(type) {
+	case []byte:
+		return json.Unmarshal(value, i)
+
+	case string:
+		return json.Unmarshal([]byte(value), i)
+
+	default:
+		return fmt.Errorf("%w: unexpected data type %T", errMachineAddressesInvalid, destination)
+	}
+}
+
+// Value return json value, implement driver.Valuer interface.
+func (i StringList) Value() (driver.Value, error) {
+	bytes, err := json.Marshal(i)
+
+	return string(bytes), err
+}

derp.go

@@ -1,16 +1,17 @@
-package derp
+package headscale
 
 import (
 	"context"
 	"encoding/json"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"net/url"
 	"os"
+	"time"
 
-	"github.com/juanfont/headscale/hscontrol/types"
 	"github.com/rs/zerolog/log"
-	"gopkg.in/yaml.v3"
+	"gopkg.in/yaml.v2"
 	"tailscale.com/tailcfg"
 )
 
@@ -31,16 +32,16 @@ func loadDERPMapFromPath(path string) (*tailcfg.DERPMap, error) {
 }
 
 func loadDERPMapFromURL(addr url.URL) (*tailcfg.DERPMap, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), types.HTTPTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), HTTPReadTimeout)
 	defer cancel()
 
-	req, err := http.NewRequestWithContext(ctx, http.MethodGet, addr.String(), nil)
+	req, err := http.NewRequestWithContext(ctx, "GET", addr.String(), nil)
 	if err != nil {
 		return nil, err
 	}
 
 	client := http.Client{
-		Timeout: types.HTTPTimeout,
+		Timeout: HTTPReadTimeout,
 	}
 
 	resp, err := client.Do(req)
@@ -49,7 +50,7 @@ func loadDERPMapFromURL(addr url.URL) (*tailcfg.DERPMap, error) {
 	}
 
 	defer resp.Body.Close()
-	body, err := io.ReadAll(resp.Body)
+	body, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
@@ -80,11 +81,8 @@ func mergeDERPMaps(derpMaps []*tailcfg.DERPMap) *tailcfg.DERPMap {
 	return &result
 }
 
-func GetDERPMap(cfg types.DERPConfig) *tailcfg.DERPMap {
-	var derpMaps []*tailcfg.DERPMap
-	if cfg.DERPMap != nil {
-		derpMaps = append(derpMaps, cfg.DERPMap)
-	}
+func GetDERPMap(cfg DERPConfig) *tailcfg.DERPMap {
+	derpMaps := make([]*tailcfg.DERPMap, 0)
 
 	for _, path := range cfg.Paths {
 		log.Debug().
@@ -128,5 +126,33 @@ func GetDERPMap(cfg types.DERPConfig) *tailcfg.DERPMap {
 
 	log.Trace().Interface("derpMap", derpMap).Msg("DERPMap loaded")
 
+	if len(derpMap.Regions) == 0 {
+		log.Warn().
+			Msg("DERP map is empty, not a single DERP map datasource was loaded correctly or contained a region")
+	}
+
 	return derpMap
 }
+
+func (h *Headscale) scheduledDERPMapUpdateWorker(cancelChan <-chan struct{}) {
+	log.Info().
+		Dur("frequency", h.cfg.DERP.UpdateFrequency).
+		Msg("Setting up a DERPMap update worker")
+	ticker := time.NewTicker(h.cfg.DERP.UpdateFrequency)
+
+	for {
+		select {
+		case <-cancelChan:
+			return
+
+		case <-ticker.C:
+			log.Info().Msg("Fetching DERPMap updates")
+			h.DERPMap = GetDERPMap(h.cfg.DERP)
+			if h.cfg.DERP.ServerEnabled {
+				h.DERPMap.Regions[h.DERPServer.region.RegionID] = &h.DERPServer.region
+			}
+
+			h.setLastStateChangeToNow()
+		}
+	}
+}

derp_server.go

@@ -1,25 +1,19 @@
-package server
+package headscale
 
 import (
-	"bufio"
 	"context"
 	"encoding/json"
 	"fmt"
 	"net"
 	"net/http"
-	"net/netip"
 	"net/url"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/coder/websocket"
-	"github.com/juanfont/headscale/hscontrol/types"
-	"github.com/juanfont/headscale/hscontrol/util"
 	"github.com/rs/zerolog/log"
 	"tailscale.com/derp"
 	"tailscale.com/net/stun"
-	"tailscale.com/net/wsconn"
 	"tailscale.com/tailcfg"
 	"tailscale.com/types/key"
 )
@@ -31,30 +25,23 @@ import (
 const fastStartHeader = "Derp-Fast-Start"
 
 type DERPServer struct {
-	serverURL     string
-	key           key.NodePrivate
-	cfg           *types.DERPConfig
 	tailscaleDERP *derp.Server
+	region        tailcfg.DERPRegion
 }
 
-func NewDERPServer(
-	serverURL string,
-	derpKey key.NodePrivate,
-	cfg *types.DERPConfig,
-) (*DERPServer, error) {
+func (h *Headscale) NewDERPServer() (*DERPServer, error) {
 	log.Trace().Caller().Msg("Creating new embedded DERP server")
-	server := derp.NewServer(derpKey, util.TSLogfWrapper()) // nolint // zerolinter complains
+	server := derp.NewServer(key.NodePrivate(*h.privateKey), log.Info().Msgf)
+	region, err := h.generateRegionLocalDERP()
+	if err != nil {
+		return nil, err
+	}
 
-	return &DERPServer{
-		serverURL:     serverURL,
-		key:           derpKey,
-		cfg:           cfg,
-		tailscaleDERP: server,
-	}, nil
+	return &DERPServer{server, region}, nil
 }
 
-func (d *DERPServer) GenerateRegion() (tailcfg.DERPRegion, error) {
-	serverURL, err := url.Parse(d.serverURL)
+func (h *Headscale) generateRegionLocalDERP() (tailcfg.DERPRegion, error) {
+	serverURL, err := url.Parse(h.cfg.ServerURL)
 	if err != nil {
 		return tailcfg.DERPRegion{}, err
 	}
@@ -77,23 +64,21 @@ func (d *DERPServer) GenerateRegion() (tailcfg.DERPRegion, error) {
 	}
 
 	localDERPregion := tailcfg.DERPRegion{
-		RegionID:   d.cfg.ServerRegionID,
-		RegionCode: d.cfg.ServerRegionCode,
-		RegionName: d.cfg.ServerRegionName,
+		RegionID:   h.cfg.DERP.ServerRegionID,
+		RegionCode: h.cfg.DERP.ServerRegionCode,
+		RegionName: h.cfg.DERP.ServerRegionName,
 		Avoid:      false,
 		Nodes: []*tailcfg.DERPNode{
 			{
-				Name:     fmt.Sprintf("%d", d.cfg.ServerRegionID),
-				RegionID: d.cfg.ServerRegionID,
+				Name:     fmt.Sprintf("%d", h.cfg.DERP.ServerRegionID),
+				RegionID: h.cfg.DERP.ServerRegionID,
 				HostName: host,
 				DERPPort: port,
-				IPv4:     d.cfg.IPv4,
-				IPv6:     d.cfg.IPv6,
 			},
 		},
 	}
 
-	_, portSTUNStr, err := net.SplitHostPort(d.cfg.STUNAddr)
+	_, portSTUNStr, err := net.SplitHostPort(h.cfg.DERP.STUNAddr)
 	if err != nil {
 		return tailcfg.DERPRegion{}, err
 	}
@@ -104,23 +89,19 @@ func (d *DERPServer) GenerateRegion() (tailcfg.DERPRegion, error) {
 	localDERPregion.Nodes[0].STUNPort = portSTUN
 
 	log.Info().Caller().Msgf("DERP region: %+v", localDERPregion)
-	log.Info().Caller().Msgf("DERP Nodes[0]: %+v", localDERPregion.Nodes[0])
 
 	return localDERPregion, nil
 }
 
-func (d *DERPServer) DERPHandler(
+func (h *Headscale) DERPHandler(
 	writer http.ResponseWriter,
 	req *http.Request,
 ) {
 	log.Trace().Caller().Msgf("/derp request from %v", req.RemoteAddr)
-	upgrade := strings.ToLower(req.Header.Get("Upgrade"))
-
-	if upgrade != "websocket" && upgrade != "derp" {
-		if upgrade != "" {
-			log.Warn().
-				Caller().
-				Msg("No Upgrade header in DERP server request. If headscale is behind a reverse proxy, make sure it is configured to pass WebSockets through.")
+	up := strings.ToLower(req.Header.Get("Upgrade"))
+	if up != "websocket" && up != "derp" {
+		if up != "" {
+			log.Warn().Caller().Msgf("Weird websockets connection upgrade: %q", up)
 		}
 		writer.Header().Set("Content-Type", "text/plain")
 		writer.WriteHeader(http.StatusUpgradeRequired)
@@ -135,56 +116,6 @@ func (d *DERPServer) DERPHandler(
 		return
 	}
 
-	if strings.Contains(req.Header.Get("Sec-Websocket-Protocol"), "derp") {
-		d.serveWebsocket(writer, req)
-	} else {
-		d.servePlain(writer, req)
-	}
-}
-
-func (d *DERPServer) serveWebsocket(writer http.ResponseWriter, req *http.Request) {
-	websocketConn, err := websocket.Accept(writer, req, &websocket.AcceptOptions{
-		Subprotocols:   []string{"derp"},
-		OriginPatterns: []string{"*"},
-		// Disable compression because DERP transmits WireGuard messages that
-		// are not compressible.
-		// Additionally, Safari has a broken implementation of compression
-		// (see https://github.com/nhooyr/websocket/issues/218) that makes
-		// enabling it actively harmful.
-		CompressionMode: websocket.CompressionDisabled,
-	})
-	if err != nil {
-		log.Error().
-			Caller().
-			Err(err).
-			Msg("Failed to upgrade websocket request")
-
-		writer.Header().Set("Content-Type", "text/plain")
-		writer.WriteHeader(http.StatusInternalServerError)
-
-		_, err = writer.Write([]byte("Failed to upgrade websocket request"))
-		if err != nil {
-			log.Error().
-				Caller().
-				Err(err).
-				Msg("Failed to write response")
-		}
-
-		return
-	}
-	defer websocketConn.Close(websocket.StatusInternalError, "closing")
-	if websocketConn.Subprotocol() != "derp" {
-		websocketConn.Close(websocket.StatusPolicyViolation, "client must speak the derp subprotocol")
-
-		return
-	}
-
-	wc := wsconn.NetConn(req.Context(), websocketConn, websocket.MessageBinary, req.RemoteAddr)
-	brw := bufio.NewReadWriter(bufio.NewReader(wc), bufio.NewWriter(wc))
-	d.tailscaleDERP.Accept(req.Context(), wc, brw, req.RemoteAddr)
-}
-
-func (d *DERPServer) servePlain(writer http.ResponseWriter, req *http.Request) {
 	fastStart := req.Header.Get(fastStartHeader) == "1"
 
 	hijacker, ok := writer.(http.Hijacker)
@@ -221,28 +152,28 @@ func (d *DERPServer) servePlain(writer http.ResponseWriter, req *http.Request) {
 	log.Trace().Caller().Msgf("Hijacked connection from %v", req.RemoteAddr)
 
 	if !fastStart {
-		pubKey := d.key.Public()
-		pubKeyStr, _ := pubKey.MarshalText() //nolint
+		pubKey := h.privateKey.Public()
+		pubKeyStr := pubKey.UntypedHexString() // nolint
 		fmt.Fprintf(conn, "HTTP/1.1 101 Switching Protocols\r\n"+
 			"Upgrade: DERP\r\n"+
 			"Connection: Upgrade\r\n"+
 			"Derp-Version: %v\r\n"+
 			"Derp-Public-Key: %s\r\n\r\n",
 			derp.ProtocolVersion,
-			string(pubKeyStr))
+			pubKeyStr)
 	}
 
-	d.tailscaleDERP.Accept(req.Context(), netConn, conn, netConn.RemoteAddr().String())
+	h.DERPServer.tailscaleDERP.Accept(netConn, conn, netConn.RemoteAddr().String())
 }
 
 // DERPProbeHandler is the endpoint that js/wasm clients hit to measure
 // DERP latency, since they can't do UDP STUN queries.
-func DERPProbeHandler(
+func (h *Headscale) DERPProbeHandler(
 	writer http.ResponseWriter,
 	req *http.Request,
 ) {
 	switch req.Method {
-	case http.MethodHead, http.MethodGet:
+	case "HEAD", "GET":
 		writer.Header().Set("Access-Control-Allow-Origin", "*")
 		writer.WriteHeader(http.StatusOK)
 	default:
@@ -257,55 +188,50 @@ func DERPProbeHandler(
 	}
 }
 
-// DERPBootstrapDNSHandler implements the /bootstrap-dns endpoint
+// DERPBootstrapDNSHandler implements the /bootsrap-dns endpoint
 // Described in https://github.com/tailscale/tailscale/issues/1405,
 // this endpoint provides a way to help a client when it fails to start up
 // because its DNS are broken.
 // The initial implementation is here https://github.com/tailscale/tailscale/pull/1406
 // They have a cache, but not clear if that is really necessary at Headscale, uh, scale.
 // An example implementation is found here https://derp.tailscale.com/bootstrap-dns
-// Coordination server is included automatically, since local DERP is using the same DNS Name in d.serverURL.
-func DERPBootstrapDNSHandler(
-	derpMap *tailcfg.DERPMap,
-) func(http.ResponseWriter, *http.Request) {
-	return func(
-		writer http.ResponseWriter,
-		req *http.Request,
-	) {
-		dnsEntries := make(map[string][]net.IP)
+func (h *Headscale) DERPBootstrapDNSHandler(
+	writer http.ResponseWriter,
+	req *http.Request,
+) {
+	dnsEntries := make(map[string][]net.IP)
 
-		resolvCtx, cancel := context.WithTimeout(req.Context(), time.Minute)
-		defer cancel()
-		var resolver net.Resolver
-		for _, region := range derpMap.Regions {
-			for _, node := range region.Nodes { // we don't care if we override some nodes
-				addrs, err := resolver.LookupIP(resolvCtx, "ip", node.HostName)
-				if err != nil {
-					log.Trace().
-						Caller().
-						Err(err).
-						Msgf("bootstrap DNS lookup failed %q", node.HostName)
+	resolvCtx, cancel := context.WithTimeout(context.Background(), time.Minute)
+	defer cancel()
+	var resolver net.Resolver
+	for _, region := range h.DERPMap.Regions {
+		for _, node := range region.Nodes { // we don't care if we override some nodes
+			addrs, err := resolver.LookupIP(resolvCtx, "ip", node.HostName)
+			if err != nil {
+				log.Trace().
+					Caller().
+					Err(err).
+					Msgf("bootstrap DNS lookup failed %q", node.HostName)
 
-					continue
-				}
-				dnsEntries[node.HostName] = addrs
+				continue
 			}
+			dnsEntries[node.HostName] = addrs
 		}
-		writer.Header().Set("Content-Type", "application/json")
-		writer.WriteHeader(http.StatusOK)
-		err := json.NewEncoder(writer).Encode(dnsEntries)
-		if err != nil {
-			log.Error().
-				Caller().
-				Err(err).
-				Msg("Failed to write response")
-		}
+	}
+	writer.Header().Set("Content-Type", "application/json")
+	writer.WriteHeader(http.StatusOK)
+	err := json.NewEncoder(writer).Encode(dnsEntries)
+	if err != nil {
+		log.Error().
+			Caller().
+			Err(err).
+			Msg("Failed to write response")
 	}
 }
 
 // ServeSTUN starts a STUN server on the configured addr.
-func (d *DERPServer) ServeSTUN() {
-	packetConn, err := net.ListenPacket("udp", d.cfg.STUNAddr)
+func (h *Headscale) ServeSTUN() {
+	packetConn, err := net.ListenPacket("udp", h.cfg.DERP.STUNAddr)
 	if err != nil {
 		log.Fatal().Msgf("failed to open STUN listener: %v", err)
 	}
@@ -350,8 +276,7 @@ func serverSTUNListener(ctx context.Context, packetConn *net.UDPConn) {
 			continue
 		}
 
-		addr, _ := netip.AddrFromSlice(udpAddr.IP)
-		res := stun.Response(txid, netip.AddrPortFrom(addr, uint16(udpAddr.Port)))
+		res := stun.Response(txid, udpAddr.IP, uint16(udpAddr.Port))
 		_, err = packetConn.WriteTo(res, udpAddr)
 		if err != nil {
 			log.Trace().Caller().Err(err).Msgf("Issue writing to UDP")

dns.go

@@ -0,0 +1,187 @@
+package headscale
+
+import (
+	"fmt"
+	"strings"
+
+	mapset "github.com/deckarep/golang-set/v2"
+	"inet.af/netaddr"
+	"tailscale.com/tailcfg"
+	"tailscale.com/util/dnsname"
+)
+
+const (
+	ByteSize = 8
+)
+
+const (
+	ipv4AddressLength = 32
+	ipv6AddressLength = 128
+)
+
+// generateMagicDNSRootDomains generates a list of DNS entries to be included in `Routes` in `MapResponse`.
+// This list of reverse DNS entries instructs the OS on what subnets and domains the Tailscale embedded DNS
+// server (listening in 100.100.100.100 udp/53) should be used for.
+//
+// Tailscale.com includes in the list:
+// - the `BaseDomain` of the user
+// - the reverse DNS entry for IPv6 (0.e.1.a.c.5.1.1.a.7.d.f.ip6.arpa., see below more on IPv6)
+// - the reverse DNS entries for the IPv4 subnets covered by the user's `IPPrefix`.
+//   In the public SaaS this is [64-127].100.in-addr.arpa.
+//
+// The main purpose of this function is then generating the list of IPv4 entries. For the 100.64.0.0/10, this
+// is clear, and could be hardcoded. But we are allowing any range as `IPPrefix`, so we need to find out the
+// subnets when we have 172.16.0.0/16 (i.e., [0-255].16.172.in-addr.arpa.), or any other subnet.
+//
+// How IN-ADDR.ARPA domains work is defined in RFC1035 (section 3.5). Tailscale.com seems to adhere to this,
+// and do not make use of RFC2317 ("Classless IN-ADDR.ARPA delegation") - hence generating the entries for the next
+// class block only.
+
+// From the netmask we can find out the wildcard bits (the bits that are not set in the netmask).
+// This allows us to then calculate the subnets included in the subsequent class block and generate the entries.
+func generateMagicDNSRootDomains(ipPrefixes []netaddr.IPPrefix) []dnsname.FQDN {
+	fqdns := make([]dnsname.FQDN, 0, len(ipPrefixes))
+	for _, ipPrefix := range ipPrefixes {
+		var generateDNSRoot func(netaddr.IPPrefix) []dnsname.FQDN
+		switch ipPrefix.IP().BitLen() {
+		case ipv4AddressLength:
+			generateDNSRoot = generateIPv4DNSRootDomain
+
+		case ipv6AddressLength:
+			generateDNSRoot = generateIPv6DNSRootDomain
+
+		default:
+			panic(
+				fmt.Sprintf(
+					"unsupported IP version with address length %d",
+					ipPrefix.IP().BitLen(),
+				),
+			)
+		}
+
+		fqdns = append(fqdns, generateDNSRoot(ipPrefix)...)
+	}
+
+	return fqdns
+}
+
+func generateIPv4DNSRootDomain(ipPrefix netaddr.IPPrefix) []dnsname.FQDN {
+	// Conversion to the std lib net.IPnet, a bit easier to operate
+	netRange := ipPrefix.IPNet()
+	maskBits, _ := netRange.Mask.Size()
+
+	// lastOctet is the last IP byte covered by the mask
+	lastOctet := maskBits / ByteSize
+
+	// wildcardBits is the number of bits not under the mask in the lastOctet
+	wildcardBits := ByteSize - maskBits%ByteSize
+
+	// min is the value in the lastOctet byte of the IP
+	// max is basically 2^wildcardBits - i.e., the value when all the wildcardBits are set to 1
+	min := uint(netRange.IP[lastOctet])
+	max := (min + 1<<uint(wildcardBits)) - 1
+
+	// here we generate the base domain (e.g., 100.in-addr.arpa., 16.172.in-addr.arpa., etc.)
+	rdnsSlice := []string{}
+	for i := lastOctet - 1; i >= 0; i-- {
+		rdnsSlice = append(rdnsSlice, fmt.Sprintf("%d", netRange.IP[i]))
+	}
+	rdnsSlice = append(rdnsSlice, "in-addr.arpa.")
+	rdnsBase := strings.Join(rdnsSlice, ".")
+
+	fqdns := make([]dnsname.FQDN, 0, max-min+1)
+	for i := min; i <= max; i++ {
+		fqdn, err := dnsname.ToFQDN(fmt.Sprintf("%d.%s", i, rdnsBase))
+		if err != nil {
+			continue
+		}
+		fqdns = append(fqdns, fqdn)
+	}
+
+	return fqdns
+}
+
+func generateIPv6DNSRootDomain(ipPrefix netaddr.IPPrefix) []dnsname.FQDN {
+	const nibbleLen = 4
+
+	maskBits, _ := ipPrefix.IPNet().Mask.Size()
+	expanded := ipPrefix.IP().StringExpanded()
+	nibbleStr := strings.Map(func(r rune) rune {
+		if r == ':' {
+			return -1
+		}
+
+		return r
+	}, expanded)
+
+	// TODO?: that does not look the most efficient implementation,
+	// but the inputs are not so long as to cause problems,
+	// and from what I can see, the generateMagicDNSRootDomains
+	// function is called only once over the lifetime of a server process.
+	prefixConstantParts := []string{}
+	for i := 0; i < maskBits/nibbleLen; i++ {
+		prefixConstantParts = append(
+			[]string{string(nibbleStr[i])},
+			prefixConstantParts...)
+	}
+
+	makeDomain := func(variablePrefix ...string) (dnsname.FQDN, error) {
+		prefix := strings.Join(append(variablePrefix, prefixConstantParts...), ".")
+
+		return dnsname.ToFQDN(fmt.Sprintf("%s.ip6.arpa", prefix))
+	}
+
+	var fqdns []dnsname.FQDN
+	if maskBits%4 == 0 {
+		dom, _ := makeDomain()
+		fqdns = append(fqdns, dom)
+	} else {
+		domCount := 1 << (maskBits % nibbleLen)
+		fqdns = make([]dnsname.FQDN, 0, domCount)
+		for i := 0; i < domCount; i++ {
+			varNibble := fmt.Sprintf("%x", i)
+			dom, err := makeDomain(varNibble)
+			if err != nil {
+				continue
+			}
+			fqdns = append(fqdns, dom)
+		}
+	}
+
+	return fqdns
+}
+
+func getMapResponseDNSConfig(
+	dnsConfigOrig *tailcfg.DNSConfig,
+	baseDomain string,
+	machine Machine,
+	peers Machines,
+) *tailcfg.DNSConfig {
+	var dnsConfig *tailcfg.DNSConfig
+	if dnsConfigOrig != nil && dnsConfigOrig.Proxied { // if MagicDNS is enabled
+		// Only inject the Search Domain of the current namespace - shared nodes should use their full FQDN
+		dnsConfig = dnsConfigOrig.Clone()
+		dnsConfig.Domains = append(
+			dnsConfig.Domains,
+			fmt.Sprintf(
+				"%s.%s",
+				machine.Namespace.Name,
+				baseDomain,
+			),
+		)
+
+		namespaceSet := mapset.NewSet[Namespace]()
+		namespaceSet.Add(machine.Namespace)
+		for _, p := range peers {
+			namespaceSet.Add(p.Namespace)
+		}
+		for _, namespace := range namespaceSet.ToSlice() {
+			dnsRoute := fmt.Sprintf("%v.%v", namespace.Name, baseDomain)
+			dnsConfig.Routes[dnsRoute] = nil
+		}
+	} else {
+		dnsConfig = dnsConfigOrig
+	}
+
+	return dnsConfig
+}

dns_test.go

@@ -0,0 +1,386 @@
+package headscale
+
+import (
+	"fmt"
+
+	"gopkg.in/check.v1"
+	"inet.af/netaddr"
+	"tailscale.com/tailcfg"
+	"tailscale.com/types/dnstype"
+)
+
+func (s *Suite) TestMagicDNSRootDomains100(c *check.C) {
+	prefixes := []netaddr.IPPrefix{
+		netaddr.MustParseIPPrefix("100.64.0.0/10"),
+	}
+	domains := generateMagicDNSRootDomains(prefixes)
+
+	found := false
+	for _, domain := range domains {
+		if domain == "64.100.in-addr.arpa." {
+			found = true
+
+			break
+		}
+	}
+	c.Assert(found, check.Equals, true)
+
+	found = false
+	for _, domain := range domains {
+		if domain == "100.100.in-addr.arpa." {
+			found = true
+
+			break
+		}
+	}
+	c.Assert(found, check.Equals, true)
+
+	found = false
+	for _, domain := range domains {
+		if domain == "127.100.in-addr.arpa." {
+			found = true
+
+			break
+		}
+	}
+	c.Assert(found, check.Equals, true)
+}
+
+func (s *Suite) TestMagicDNSRootDomains172(c *check.C) {
+	prefixes := []netaddr.IPPrefix{
+		netaddr.MustParseIPPrefix("172.16.0.0/16"),
+	}
+	domains := generateMagicDNSRootDomains(prefixes)
+
+	found := false
+	for _, domain := range domains {
+		if domain == "0.16.172.in-addr.arpa." {
+			found = true
+
+			break
+		}
+	}
+	c.Assert(found, check.Equals, true)
+
+	found = false
+	for _, domain := range domains {
+		if domain == "255.16.172.in-addr.arpa." {
+			found = true
+
+			break
+		}
+	}
+	c.Assert(found, check.Equals, true)
+}
+
+// Happens when netmask is a multiple of 4 bits (sounds likely).
+func (s *Suite) TestMagicDNSRootDomainsIPv6Single(c *check.C) {
+	prefixes := []netaddr.IPPrefix{
+		netaddr.MustParseIPPrefix("fd7a:115c:a1e0::/48"),
+	}
+	domains := generateMagicDNSRootDomains(prefixes)
+
+	c.Assert(len(domains), check.Equals, 1)
+	c.Assert(
+		domains[0].WithTrailingDot(),
+		check.Equals,
+		"0.e.1.a.c.5.1.1.a.7.d.f.ip6.arpa.",
+	)
+}
+
+func (s *Suite) TestMagicDNSRootDomainsIPv6SingleMultiple(c *check.C) {
+	prefixes := []netaddr.IPPrefix{
+		netaddr.MustParseIPPrefix("fd7a:115c:a1e0::/50"),
+	}
+	domains := generateMagicDNSRootDomains(prefixes)
+
+	yieldsRoot := func(dom string) bool {
+		for _, candidate := range domains {
+			if candidate.WithTrailingDot() == dom {
+				return true
+			}
+		}
+
+		return false
+	}
+
+	c.Assert(len(domains), check.Equals, 4)
+	c.Assert(yieldsRoot("0.0.e.1.a.c.5.1.1.a.7.d.f.ip6.arpa."), check.Equals, true)
+	c.Assert(yieldsRoot("1.0.e.1.a.c.5.1.1.a.7.d.f.ip6.arpa."), check.Equals, true)
+	c.Assert(yieldsRoot("2.0.e.1.a.c.5.1.1.a.7.d.f.ip6.arpa."), check.Equals, true)
+	c.Assert(yieldsRoot("3.0.e.1.a.c.5.1.1.a.7.d.f.ip6.arpa."), check.Equals, true)
+}
+
+func (s *Suite) TestDNSConfigMapResponseWithMagicDNS(c *check.C) {
+	namespaceShared1, err := app.CreateNamespace("shared1")
+	c.Assert(err, check.IsNil)
+
+	namespaceShared2, err := app.CreateNamespace("shared2")
+	c.Assert(err, check.IsNil)
+
+	namespaceShared3, err := app.CreateNamespace("shared3")
+	c.Assert(err, check.IsNil)
+
+	preAuthKeyInShared1, err := app.CreatePreAuthKey(
+		namespaceShared1.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	preAuthKeyInShared2, err := app.CreatePreAuthKey(
+		namespaceShared2.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	preAuthKeyInShared3, err := app.CreatePreAuthKey(
+		namespaceShared3.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	PreAuthKey2InShared1, err := app.CreatePreAuthKey(
+		namespaceShared1.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	_, err = app.GetMachine(namespaceShared1.Name, "test_get_shared_nodes_1")
+	c.Assert(err, check.NotNil)
+
+	machineInShared1 := &Machine{
+		ID:             1,
+		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
+		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
+		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
+		Hostname:       "test_get_shared_nodes_1",
+		NamespaceID:    namespaceShared1.ID,
+		Namespace:      *namespaceShared1,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.1")},
+		AuthKeyID:      uint(preAuthKeyInShared1.ID),
+	}
+	app.db.Save(machineInShared1)
+
+	_, err = app.GetMachine(namespaceShared1.Name, machineInShared1.Hostname)
+	c.Assert(err, check.IsNil)
+
+	machineInShared2 := &Machine{
+		ID:             2,
+		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		Hostname:       "test_get_shared_nodes_2",
+		NamespaceID:    namespaceShared2.ID,
+		Namespace:      *namespaceShared2,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.2")},
+		AuthKeyID:      uint(preAuthKeyInShared2.ID),
+	}
+	app.db.Save(machineInShared2)
+
+	_, err = app.GetMachine(namespaceShared2.Name, machineInShared2.Hostname)
+	c.Assert(err, check.IsNil)
+
+	machineInShared3 := &Machine{
+		ID:             3,
+		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		Hostname:       "test_get_shared_nodes_3",
+		NamespaceID:    namespaceShared3.ID,
+		Namespace:      *namespaceShared3,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.3")},
+		AuthKeyID:      uint(preAuthKeyInShared3.ID),
+	}
+	app.db.Save(machineInShared3)
+
+	_, err = app.GetMachine(namespaceShared3.Name, machineInShared3.Hostname)
+	c.Assert(err, check.IsNil)
+
+	machine2InShared1 := &Machine{
+		ID:             4,
+		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		Hostname:       "test_get_shared_nodes_4",
+		NamespaceID:    namespaceShared1.ID,
+		Namespace:      *namespaceShared1,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.4")},
+		AuthKeyID:      uint(PreAuthKey2InShared1.ID),
+	}
+	app.db.Save(machine2InShared1)
+
+	baseDomain := "foobar.headscale.net"
+	dnsConfigOrig := tailcfg.DNSConfig{
+		Routes:  make(map[string][]*dnstype.Resolver),
+		Domains: []string{baseDomain},
+		Proxied: true,
+	}
+
+	peersOfMachineInShared1, err := app.getPeers(machineInShared1)
+	c.Assert(err, check.IsNil)
+
+	dnsConfig := getMapResponseDNSConfig(
+		&dnsConfigOrig,
+		baseDomain,
+		*machineInShared1,
+		peersOfMachineInShared1,
+	)
+	c.Assert(dnsConfig, check.NotNil)
+
+	c.Assert(len(dnsConfig.Routes), check.Equals, 3)
+
+	domainRouteShared1 := fmt.Sprintf("%s.%s", namespaceShared1.Name, baseDomain)
+	_, ok := dnsConfig.Routes[domainRouteShared1]
+	c.Assert(ok, check.Equals, true)
+
+	domainRouteShared2 := fmt.Sprintf("%s.%s", namespaceShared2.Name, baseDomain)
+	_, ok = dnsConfig.Routes[domainRouteShared2]
+	c.Assert(ok, check.Equals, true)
+
+	domainRouteShared3 := fmt.Sprintf("%s.%s", namespaceShared3.Name, baseDomain)
+	_, ok = dnsConfig.Routes[domainRouteShared3]
+	c.Assert(ok, check.Equals, true)
+}
+
+func (s *Suite) TestDNSConfigMapResponseWithoutMagicDNS(c *check.C) {
+	namespaceShared1, err := app.CreateNamespace("shared1")
+	c.Assert(err, check.IsNil)
+
+	namespaceShared2, err := app.CreateNamespace("shared2")
+	c.Assert(err, check.IsNil)
+
+	namespaceShared3, err := app.CreateNamespace("shared3")
+	c.Assert(err, check.IsNil)
+
+	preAuthKeyInShared1, err := app.CreatePreAuthKey(
+		namespaceShared1.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	preAuthKeyInShared2, err := app.CreatePreAuthKey(
+		namespaceShared2.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	preAuthKeyInShared3, err := app.CreatePreAuthKey(
+		namespaceShared3.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	preAuthKey2InShared1, err := app.CreatePreAuthKey(
+		namespaceShared1.Name,
+		false,
+		false,
+		nil,
+	)
+	c.Assert(err, check.IsNil)
+
+	_, err = app.GetMachine(namespaceShared1.Name, "test_get_shared_nodes_1")
+	c.Assert(err, check.NotNil)
+
+	machineInShared1 := &Machine{
+		ID:             1,
+		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
+		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
+		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
+		Hostname:       "test_get_shared_nodes_1",
+		NamespaceID:    namespaceShared1.ID,
+		Namespace:      *namespaceShared1,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.1")},
+		AuthKeyID:      uint(preAuthKeyInShared1.ID),
+	}
+	app.db.Save(machineInShared1)
+
+	_, err = app.GetMachine(namespaceShared1.Name, machineInShared1.Hostname)
+	c.Assert(err, check.IsNil)
+
+	machineInShared2 := &Machine{
+		ID:             2,
+		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		Hostname:       "test_get_shared_nodes_2",
+		NamespaceID:    namespaceShared2.ID,
+		Namespace:      *namespaceShared2,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.2")},
+		AuthKeyID:      uint(preAuthKeyInShared2.ID),
+	}
+	app.db.Save(machineInShared2)
+
+	_, err = app.GetMachine(namespaceShared2.Name, machineInShared2.Hostname)
+	c.Assert(err, check.IsNil)
+
+	machineInShared3 := &Machine{
+		ID:             3,
+		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		Hostname:       "test_get_shared_nodes_3",
+		NamespaceID:    namespaceShared3.ID,
+		Namespace:      *namespaceShared3,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.3")},
+		AuthKeyID:      uint(preAuthKeyInShared3.ID),
+	}
+	app.db.Save(machineInShared3)
+
+	_, err = app.GetMachine(namespaceShared3.Name, machineInShared3.Hostname)
+	c.Assert(err, check.IsNil)
+
+	machine2InShared1 := &Machine{
+		ID:             4,
+		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
+		Hostname:       "test_get_shared_nodes_4",
+		NamespaceID:    namespaceShared1.ID,
+		Namespace:      *namespaceShared1,
+		RegisterMethod: RegisterMethodAuthKey,
+		IPAddresses:    []netaddr.IP{netaddr.MustParseIP("100.64.0.4")},
+		AuthKeyID:      uint(preAuthKey2InShared1.ID),
+	}
+	app.db.Save(machine2InShared1)
+
+	baseDomain := "foobar.headscale.net"
+	dnsConfigOrig := tailcfg.DNSConfig{
+		Routes:  make(map[string][]*dnstype.Resolver),
+		Domains: []string{baseDomain},
+		Proxied: false,
+	}
+
+	peersOfMachine1Shared1, err := app.getPeers(machineInShared1)
+	c.Assert(err, check.IsNil)
+
+	dnsConfig := getMapResponseDNSConfig(
+		&dnsConfigOrig,
+		baseDomain,
+		*machineInShared1,
+		peersOfMachine1Shared1,
+	)
+	c.Assert(dnsConfig, check.NotNil)
+	c.Assert(len(dnsConfig.Routes), check.Equals, 0)
+	c.Assert(len(dnsConfig.Domains), check.Equals, 1)
+}

docs/README.md

@@ -0,0 +1,53 @@
+# headscale documentation
+
+This page contains the official and community contributed documentation for `headscale`.
+
+If you are having trouble with following the documentation or get unexpected results,
+please ask on [Discord](https://discord.gg/c84AZQhmpx) instead of opening an Issue.
+
+## Official documentation
+
+### How-to
+
+- [Running headscale on Linux](running-headscale-linux.md)
+- [Control headscale remotely](remote-cli.md)
+- [Using a Windows client with headscale](windows-client.md)
+
+### References
+
+- [Configuration](../config-example.yaml)
+- [Glossary](glossary.md)
+- [TLS](tls.md)
+
+## Community documentation
+
+Community documentation is not actively maintained by the headscale authors and is
+written by community members. It is _not_ verified by `headscale` developers.
+
+**It might be outdated and it might miss necessary steps**.
+
+- [Running headscale in a container](running-headscale-container.md)
+- [Running headscale on OpenBSD](running-headscale-openbsd.md)
+
+## Misc
+
+### Policy ACLs
+
+Headscale implements the same policy ACLs as Tailscale.com, adapted to the self-hosted environment.
+
+For instance, instead of referring to users when defining groups you must
+use namespaces (which are the equivalent to user/logins in Tailscale.com).
+
+Please check https://tailscale.com/kb/1018/acls/, and `./tests/acls/` in this repo for working examples.
+
+When using ACL's the Namespace borders are no longer applied. All machines
+whichever the Namespace have the ability to communicate with other hosts as
+long as the ACL's permits this exchange.
+
+The [ACLs](acls.md) document should help understand a fictional case of setting
+up ACLs in a small company. All concepts presented in this document could be
+applied outside of business oriented usage.
+
+### Apple devices
+
+An endpoint with information on how to connect your Apple devices (currently macOS only) is available at `/apple` on your running instance.

docs/about/clients.md

@@ -1,16 +0,0 @@
-# Client and operating system support
-
-We aim to support the [**last 10 releases** of the Tailscale client](https://tailscale.com/changelog#client) on all
-provided operating systems and platforms. Some platforms might require additional configuration to connect with
-headscale.
-
-| OS      | Supports headscale                                                                                    |
-| ------- | ----------------------------------------------------------------------------------------------------- |
-| Linux   | Yes                                                                                                   |
-| OpenBSD | Yes                                                                                                   |
-| FreeBSD | Yes                                                                                                   |
-| Windows | Yes (see [docs](../usage/connect/windows.md) and `/windows` on your headscale for more information)   |
-| Android | Yes (see [docs](../usage/connect/android.md) for more information)                                    |
-| macOS   | Yes (see [docs](../usage/connect/apple.md#macos) and `/apple` on your headscale for more information) |
-| iOS     | Yes (see [docs](../usage/connect/apple.md#ios) and `/apple` on your headscale for more information)   |
-| tvOS    | Yes (see [docs](../usage/connect/apple.md#tvos) and `/apple` on your headscale for more information)  |

docs/about/contributing.md

@@ -1,3 +0,0 @@
-{%
-    include-markdown "../../CONTRIBUTING.md"
-%}

docs/about/faq.md

@@ -1,137 +0,0 @@
-# Frequently Asked Questions
-
-## What is the design goal of headscale?
-
-Headscale aims to implement a self-hosted, open source alternative to the
-[Tailscale](https://tailscale.com/) control server. Headscale's goal is to
-provide self-hosters and hobbyists with an open-source server they can use for
-their projects and labs. It implements a narrow scope, a _single_ Tailscale
-network (tailnet), suitable for a personal use, or a small open-source
-organisation.
-
-## How can I contribute?
-
-Headscale is "Open Source, acknowledged contribution", this means that any
-contribution will have to be discussed with the Maintainers before being submitted.
-
-Please see [Contributing](contributing.md) for more information.
-
-## Why is 'acknowledged contribution' the chosen model?
-
-Both maintainers have full-time jobs and families, and we want to avoid burnout. We also want to avoid frustration from contributors when their PRs are not accepted.
-
-We are more than happy to exchange emails, or to have dedicated calls before a PR is submitted.
-
-## When/Why is Feature X going to be implemented?
-
-We don't know. We might be working on it. If you're interested in contributing, please post a feature request about it.
-
-Please be aware that there are a number of reasons why we might not accept specific contributions:
-
-- It is not possible to implement the feature in a way that makes sense in a self-hosted environment.
-- Given that we are reverse-engineering Tailscale to satisfy our own curiosity, we might be interested in implementing the feature ourselves.
-- You are not sending unit and integration tests with it.
-
-## Do you support Y method of deploying headscale?
-
-We currently support deploying headscale using our binaries and the DEB packages. Visit our [installation guide using
-official releases](../setup/install/official.md) for more information.
-
-In addition to that, you may use packages provided by the community or from distributions. Learn more in the
-[installation guide using community packages](../setup/install/community.md).
-
-For convenience, we also [build container images with headscale](../setup/install/container.md). But **please be aware that
-we don't officially support deploying headscale using Docker**. On our [Discord server](https://discord.gg/c84AZQhmpx)
-we have a "docker-issues" channel where you can ask for Docker-specific help to the community.
-
-## Scaling / How many clients does Headscale support?
-
-It depends. As often stated, Headscale is not enterprise software and our focus
-is homelabbers and self-hosters. Of course, we do not prevent people from using
-it in a commercial/professional setting and often get questions about scaling.
-
-Please note that when Headscale is developed, performance is not part of the
-consideration as the main audience is considered to be users with a moddest
-amount of devices. We focus on correctness and feature parity with Tailscale
-SaaS over time.
-
-To understand if you might be able to use Headscale for your usecase, I will
-describe two scenarios in an effort to explain what is the central bottleneck
-of Headscale:
-
-1. An environment with 1000 servers
-
-    - they rarely  "move" (change their endpoints)
-    - new nodes are added rarely
-
-2. An environment with 80 laptops/phones (end user devices)
-
-    - nodes move often, e.g. switching from home to office
-
-Headscale calculates a map of all nodes that need to talk to each other,
-creating this "world map" requires a lot of CPU time. When an event that
-requires changes to this map happens, the whole "world" is recalculated, and a
-new "world map" is created for every node in the network.
-
-This means that under certain conditions, Headscale can likely handle 100s
-of devices (maybe more), if there is _little to no change_ happening in the
-network. For example, in Scenario 1, the process of computing the world map is
-extremly demanding due to the size of the network, but when the map has been
-created and the nodes are not changing, the Headscale instance will likely
-return to a very low resource usage until the next time there is an event
-requiring the new map.
-
-In the case of Scenario 2, the process of computing the world map is less
-demanding due to the smaller size of the network, however, the type of nodes
-will likely change frequently, which would lead to a constant resource usage.
-
-Headscale will start to struggle when the two scenarios overlap, e.g. many nodes
-with frequent changes will cause the resource usage to remain constantly high.
-In the worst case scenario, the queue of nodes waiting for their map will grow
-to a point where Headscale never will be able to catch up, and nodes will never
-learn about the current state of the world.
-
-We expect that the performance will improve over time as we improve the code
-base, but it is not a focus. In general, we will never make the tradeoff to make
-things faster on the cost of less maintainable or readable code. We are a small
-team and have to optimise for maintainabillity.
-
-## Which database should I use?
-
-We recommend the use of SQLite as database for headscale:
-
-- SQLite is simple to setup and easy to use
-- It scales well for all of headscale's usecases
-- Development and testing happens primarily on SQLite
-- PostgreSQL is still supported, but is considered to be in "maintenance mode"
-
-The headscale project itself does not provide a tool to migrate from PostgreSQL to SQLite. Please have a look at [the
-related tools documentation](../ref/integration/tools.md) for migration tooling provided by the community.
-
-The choice of database has little to no impact on the performance of the server,
-see [Scaling / How many clients does Headscale support?](#scaling-how-many-clients-does-headscale-support) for understanding how Headscale spends its resources.
-
-## Why is my reverse proxy not working with headscale?
-
-We don't know. We don't use reverse proxies with headscale ourselves, so we don't have any experience with them. We have
-[community documentation](../ref/integration/reverse-proxy.md) on how to configure various reverse proxies, and a
-dedicated "reverse-proxy-issues" channel on our [Discord server](https://discord.gg/c84AZQhmpx) where you can ask for
-help to the community.
-
-## Can I use headscale and tailscale on the same machine?
-
-Running headscale on a machine that is also in the tailnet can cause problems with subnet routers, traffic relay nodes, and MagicDNS. It might work, but it is not supported.
-
-
-## Why do two nodes see each other in their status, even if an ACL allows traffic only in one direction?
-
-A frequent use case is to allow traffic only from one node to another, but not the other way around. For example, the
-workstation of an administrator should be able to connect to all nodes but the nodes themselves shouldn't be able to
-connect back to the administrator's node. Why do all nodes see the administrator's workstation in the output of
-`tailscale status`?
-
-This is essentially how Tailscale works. If traffic is allowed to flow in one direction, then both nodes see each other
-in their output of `tailscale status`. Traffic is still filtered according to the ACL, with the exception of `tailscale
-ping` which is always allowed in either direction.
-
-See also <https://tailscale.com/kb/1087/device-visibility>.

docs/about/features.md

@@ -1,38 +0,0 @@
-# Features
-
-Headscale aims to implement a self-hosted, open source alternative to the Tailscale control server. Headscale's goal is
-to provide self-hosters and hobbyists with an open-source server they can use for their projects and labs. This page
-provides on overview of Headscale's feature and compatibility with the Tailscale control server:
-
-- [x] Full "base" support of Tailscale's features
-- [x] Node registration
-    - [x] Interactive
-    - [x] Pre authenticated key
-- [x] [DNS](../ref/dns.md)
-    - [x] [MagicDNS](https://tailscale.com/kb/1081/magicdns)
-    - [x] [Global and restricted nameservers (split DNS)](https://tailscale.com/kb/1054/dns#nameservers)
-    - [x] [search domains](https://tailscale.com/kb/1054/dns#search-domains)
-    - [x] [Extra DNS records (Headscale only)](../ref/dns.md#setting-extra-dns-records)
-- [x] [Taildrop (File Sharing)](https://tailscale.com/kb/1106/taildrop)
-- [x] [Routes](../ref/routes.md)
-    - [x] [Subnet routers](../ref/routes.md#subnet-router)
-    - [x] [Exit nodes](../ref/routes.md#exit-node)
-- [x] Dual stack (IPv4 and IPv6)
-- [x] Ephemeral nodes
-- [x] Embedded [DERP server](https://tailscale.com/kb/1232/derp-servers)
-- [x] Access control lists ([GitHub label "policy"](https://github.com/juanfont/headscale/labels/policy%20%F0%9F%93%9D))
-    - [x] ACL management via API
-    - [x] Some [Autogroups](https://tailscale.com/kb/1396/targets#autogroups), currently: `autogroup:internet`,
-      `autogroup:nonroot`
-    - [x] [Auto approvers](https://tailscale.com/kb/1337/acl-syntax#auto-approvers) for [subnet
-      routers](../ref/routes.md#automatically-approve-routes-of-a-subnet-router) and [exit
-      nodes](../ref/routes.md#automatically-approve-an-exit-node-with-auto-approvers)
-    - [x] [Tailscale SSH](https://tailscale.com/kb/1193/tailscale-ssh)
-* [ ] Node registration using Single-Sign-On (OpenID Connect) ([GitHub label "OIDC"](https://github.com/juanfont/headscale/labels/OIDC))
-    - [x] Basic registration
-    - [x] Update user profile from identity provider
-    - [ ] Dynamic ACL support
-    - [ ] OIDC groups cannot be used in ACLs
-- [ ] [Funnel](https://tailscale.com/kb/1223/funnel) ([#1040](https://github.com/juanfont/headscale/issues/1040))
-- [ ] [Serve](https://tailscale.com/kb/1312/serve) ([#1234](https://github.com/juanfont/headscale/issues/1921))
-- [ ] [Network flow logs](https://tailscale.com/kb/1219/network-flow-logs) ([#1687](https://github.com/juanfont/headscale/issues/1687))

docs/about/help.md

@@ -1,5 +0,0 @@
-# Getting help
-
-Join our [Discord server](https://discord.gg/c84AZQhmpx) for announcements and community support.
-
-Please report bugs via [GitHub issues](https://github.com/juanfont/headscale/issues)

docs/about/releases.md

@@ -1,10 +0,0 @@
-# Releases
-
-All headscale releases are available on the [GitHub release page](https://github.com/juanfont/headscale/releases). Those
-releases are available as binaries for various platforms and architectures, packages for Debian based systems and source
-code archives. Container images are available on [Docker Hub](https://hub.docker.com/r/headscale/headscale) and
-[GitHub Container Registry](https://github.com/juanfont/headscale/pkgs/container/headscale).
-
-An Atom/RSS feed of headscale releases is available [here](https://github.com/juanfont/headscale/releases.atom).
-
-See the "announcements" channel on our [Discord server](https://discord.gg/c84AZQhmpx) for news about headscale.

docs/about/sponsor.md

@@ -1,4 +0,0 @@
-# Sponsor
-
-If you like to support the development of headscale, please consider a donation via
-[ko-fi.com/headscale](https://ko-fi.com/headscale). Thank you!

docs/acls.md

@@ -1,15 +1,4 @@
-Headscale implements the same policy ACLs as Tailscale.com, adapted to the self-hosted environment.
-
-For instance, instead of referring to users when defining groups you must
-use users (which are the equivalent to user/logins in Tailscale.com).
-
-Please check https://tailscale.com/kb/1018/acls/ for further information.
-
-When using ACL's the User borders are no longer applied. All machines
-whichever the User have the ability to communicate with other hosts as
-long as the ACL's permits this exchange.
-
-## ACLs use case example
+# ACLs use case example
 
 Let's build an example use case for a small business (It may be the place where
 ACL's are the most useful).
@@ -36,38 +25,34 @@ servers.
 - billing.internal
 - router.internal
 
-![ACL implementation example](../images/headscale-acl-network.png)
+![ACL implementation example](images/headscale-acl-network.png)
 
 ## ACL setup
 
-ACLs have to be written in [huJSON](https://github.com/tailscale/hujson).
+Note: Namespaces will be created automatically when users authenticate with the
+Headscale server.
 
-When [registering the servers](../usage/getting-started.md#register-a-node) we
-will need to add the flag `--advertise-tags=tag:<tag1>,tag:<tag2>`, and the user
-that is registering the server should be allowed to do it. Since anyone can add
-tags to a server they can register, the check of the tags is done on headscale
-server and only valid tags are applied. A tag is valid if the user that is
+ACLs could be written either on [huJSON](https://github.com/tailscale/hujson)
+or YAML. Check the [test ACLs](../tests/acls) for further information.
+
+When registering the servers we will need to add the flag
+`--advertised-tags=tag:<tag1>,tag:<tag2>`, and the user (namespace) that is
+registering the server should be allowed to do it. Since anyone can add tags to
+a server they can register, the check of the tags is done on headscale server
+and only valid tags are applied. A tag is valid if the namespace that is
 registering it is allowed to do it.
 
-To use ACLs in headscale, you must edit your `config.yaml` file. In there you will find a `policy.path` parameter. This
-will need to point to your ACL file. More info on how these policies are written can be found
-[here](https://tailscale.com/kb/1018/acls/).
-
-Please reload or restart Headscale after updating the ACL file. Headscale may be reloaded either via its systemd service
-(`sudo systemctl reload headscale`) or by sending a SIGHUP signal (`sudo kill -HUP $(pidof headscale)`) to the main
-process. Headscale logs the result of ACL policy processing after each reload.
-
 Here are the ACL's to implement the same permissions as above:
 
-```json title="acl.json"
+```json
 {
   // groups are collections of users having a common scope. A user can be in multiple groups
   // groups cannot be composed of groups
   "groups": {
-    "group:boss": ["boss@"],
-    "group:dev": ["dev1@", "dev2@"],
-    "group:admin": ["admin1@"],
-    "group:intern": ["intern1@"]
+    "group:boss": ["boss"],
+    "group:dev": ["dev1", "dev2"],
+    "group:admin": ["admin1"],
+    "group:intern": ["intern1"]
   },
   // tagOwners in tailscale is an association between a TAG and the people allowed to set this TAG on a server.
   // This is documented [here](https://tailscale.com/kb/1068/acl-tags#defining-a-tag)
@@ -90,7 +75,7 @@ Here are the ACL's to implement the same permissions as above:
   // to define a single host, use a /32 mask. You cannot use DNS entries here,
   // as they're prone to be hijacked by replacing their IP addresses.
   // see https://github.com/tailscale/tailscale/issues/3800 for more information.
-  "hosts": {
+  "Hosts": {
     "postgresql.internal": "10.20.0.2/32",
     "webservers.internal": "10.20.10.1/29"
   },
@@ -149,11 +134,13 @@ Here are the ACL's to implement the same permissions as above:
     },
     // developers have access to the internal network through the router.
     // the internal network is composed of HTTPS endpoints and Postgresql
-    // database servers.
+    // database servers. There's an additional rule to allow traffic to be
+    // forwarded to the internal subnet, 10.20.0.0/16. See this issue
+    // https://github.com/juanfont/headscale/issues/502
     {
       "action": "accept",
       "src": ["group:dev"],
-      "dst": ["10.20.0.0/16:443,5432"]
+      "dst": ["10.20.0.0/16:443,5432", "router.internal:0"]
     },
 
     // servers should be able to talk to database in tcp/5432. Database should not be able to initiate connections to
@@ -177,13 +164,13 @@ Here are the ACL's to implement the same permissions as above:
       "dst": ["tag:dev-app-servers:80,443"]
     },
 
-    // We still have to allow internal users communications since nothing guarantees that each user have
-    // their own users.
-    { "action": "accept", "src": ["boss@"], "dst": ["boss@:*"] },
-    { "action": "accept", "src": ["dev1@"], "dst": ["dev1@:*"] },
-    { "action": "accept", "src": ["dev2@"], "dst": ["dev2@:*"] },
-    { "action": "accept", "src": ["admin1@"], "dst": ["admin1@:*"] },
-    { "action": "accept", "src": ["intern1@"], "dst": ["intern1@:*"] }
+    // We still have to allow internal namespaces communications since nothing guarantees that each user have
+    // their own namespaces.
+    { "action": "accept", "src": ["boss"], "dst": ["boss:*"] },
+    { "action": "accept", "src": ["dev1"], "dst": ["dev1:*"] },
+    { "action": "accept", "src": ["dev2"], "dst": ["dev2:*"] },
+    { "action": "accept", "src": ["admin1"], "dst": ["admin1:*"] },
+    { "action": "accept", "src": ["intern1"], "dst": ["intern1:*"] }
   ]
 }
 ```

docs/build-headscale-container.md

@@ -0,0 +1,32 @@
+# Build docker from scratch
+
+The Dockerfiles included in the repository are using the [buildx plugin](https://docs.docker.com/buildx/working-with-buildx/). This plugin is includes in docker newer than Docker-ce CLI 19.03.2. The plugin is used to be able to build different container arches. Building the Dockerfiles without buildx is not possible.
+
+# Build native
+
+To build the container on the native arch you can just use:
+```
+$ sudo docker buildx build -t headscale:custom-arch .
+```
+
+For example: This will build a amd64(x86_64) container if your hostsystem is amd64(x86_64). Or a arm64 container on a arm64 hostsystem (raspberry pi4).
+
+# Build cross platform
+
+To build a arm64 container on a amd64 hostsystem you could use:
+```
+$ sudo docker buildx build --platform linux/arm64 -t headscale:custom-arm64 .
+
+```
+
+**Import: Currently arm32 build are not supported as there is a problem with a library used by headscale. Hopefully this will be fixed soon.**
+
+# Build multiple arches
+
+To build multiple archres you could use:
+
+```
+$ sudo docker buildx create --use
+$ sudo docker buildx build --platform linux/amd64,linux/arm64 .
+
+```

docs/examples/README.md

@@ -0,0 +1,5 @@
+# Examples
+
+This directory contains examples on how to run `headscale` on different platforms.
+
+All examples are provided by the community and they are not verified by the `headscale` authors.

docs/examples/kustomize/.gitignore

@@ -0,0 +1,2 @@
+/**/site
+/**/secrets

docs/examples/kustomize/README.md

@@ -0,0 +1,100 @@
+# Deploying headscale on Kubernetes
+
+**Note:** This is contributed by the community and not verified by the headscale authors.
+
+This directory contains [Kustomize](https://kustomize.io) templates that deploy
+headscale in various configurations.
+
+These templates currently support Rancher k3s. Other clusters may require
+adaptation, especially around volume claims and ingress.
+
+Commands below assume this directory is your current working directory.
+
+# Generate secrets and site configuration
+
+Run `./init.bash` to generate keys, passwords, and site configuration files.
+
+Edit `base/site/public.env`, changing `public-hostname` to the public DNS name
+that will be used for your headscale deployment.
+
+Set `public-proto` to "https" if you're planning to use TLS & Let's Encrypt.
+
+Configure DERP servers by editing `base/site/derp.yaml` if needed.
+
+# Add the image to the registry
+
+You'll somehow need to get `headscale:latest` into your cluster image registry.
+
+An easy way to do this with k3s:
+
+- Reconfigure k3s to use docker instead of containerd (`k3s server --docker`)
+- `docker build -t headscale:latest ..` from here
+
+# Create the namespace
+
+If it doesn't already exist, `kubectl create ns headscale`.
+
+# Deploy headscale
+
+## sqlite
+
+`kubectl -n headscale apply -k ./sqlite`
+
+## postgres
+
+`kubectl -n headscale apply -k ./postgres`
+
+# TLS & Let's Encrypt
+
+Test a staging certificate with your configured DNS name and Let's Encrypt.
+
+`kubectl -n headscale apply -k ./staging-tls`
+
+Replace with a production certificate.
+
+`kubectl -n headscale apply -k ./production-tls`
+
+## Static / custom TLS certificates
+
+Only Let's Encrypt is supported. If you need other TLS settings, modify or patch the ingress.
+
+# Administration
+
+Use the wrapper script to remotely operate headscale to perform administrative
+tasks like creating namespaces, authkeys, etc.
+
+```
+[c@nix-slate:~/Projects/headscale/k8s]$ ./headscale.bash
+
+headscale is an open source implementation of the Tailscale control server
+
+https://github.com/juanfont/headscale
+
+Usage:
+  headscale [command]
+
+Available Commands:
+  help        Help about any command
+  namespace   Manage the namespaces of headscale
+  node        Manage the nodes of headscale
+  preauthkey  Handle the preauthkeys in headscale
+  routes      Manage the routes of headscale
+  serve       Launches the headscale server
+  version     Print the version.
+
+Flags:
+  -h, --help            help for headscale
+  -o, --output string   Output format. Empty for human-readable, 'json' or 'json-line'
+
+Use "headscale [command] --help" for more information about a command.
+
+```
+
+# TODO / Ideas
+
+- Interpolate `email:` option to the ClusterIssuer from site configuration.
+  This probably needs to be done with a transformer, kustomize vars don't seem to work.
+- Add kustomize examples for cloud-native ingress, load balancer
+- CockroachDB for the backend
+- DERP server deployment
+- Tor hidden service

docs/examples/kustomize/base/configmap.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: headscale-config
+data:
+  server_url: $(PUBLIC_PROTO)://$(PUBLIC_HOSTNAME)
+  listen_addr: "0.0.0.0:8080"
+  metrics_listen_addr: "127.0.0.1:9090"
+  ephemeral_node_inactivity_timeout: "30m"

docs/examples/kustomize/base/ingress.yaml

@@ -0,0 +1,18 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: headscale
+  annotations:
+    kubernetes.io/ingress.class: traefik
+spec:
+  rules:
+    - host: $(PUBLIC_HOSTNAME)
+      http:
+        paths:
+          - backend:
+              service:
+                name: headscale
+                port:
+                  number: 8080
+            path: /
+            pathType: Prefix

docs/examples/kustomize/base/kustomization.yaml

@@ -0,0 +1,42 @@
+namespace: headscale
+resources:
+  - configmap.yaml
+  - ingress.yaml
+  - service.yaml
+generatorOptions:
+  disableNameSuffixHash: true
+configMapGenerator:
+  - name: headscale-site
+    files:
+      - derp.yaml=site/derp.yaml
+    envs:
+      - site/public.env
+  - name: headscale-etc
+    literals:
+      - config.json={}
+secretGenerator:
+  - name: headscale
+    files:
+      - secrets/private-key
+vars:
+  - name: PUBLIC_PROTO
+    objRef:
+      kind: ConfigMap
+      name: headscale-site
+      apiVersion: v1
+    fieldRef:
+      fieldPath: data.public-proto
+  - name: PUBLIC_HOSTNAME
+    objRef:
+      kind: ConfigMap
+      name: headscale-site
+      apiVersion: v1
+    fieldRef:
+      fieldPath: data.public-hostname
+  - name: CONTACT_EMAIL
+    objRef:
+      kind: ConfigMap
+      name: headscale-site
+      apiVersion: v1
+    fieldRef:
+      fieldPath: data.contact-email

docs/examples/kustomize/base/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: headscale
+  labels:
+    app: headscale
+spec:
+  selector:
+    app: headscale
+  ports:
+    - name: http
+      targetPort: http
+      port: 8080

docs/examples/kustomize/headscale.bash

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -eu
+exec kubectl -n headscale exec -ti pod/headscale-0 -- /go/bin/headscale "$@"

docs/examples/kustomize/init.bash

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -eux
+cd $(dirname $0)
+
+umask 022
+mkdir -p base/site/
+[ ! -e base/site/public.env ] && (
+    cat >base/site/public.env <<EOF
+public-hostname=localhost
+public-proto=http
+contact-email=headscale@example.com
+EOF
+)
+[ ! -e base/site/derp.yaml ] && cp ../derp.yaml base/site/derp.yaml
+
+umask 077
+mkdir -p base/secrets/
+[ ! -e base/secrets/private-key ] && (
+    wg genkey > base/secrets/private-key
+)
+mkdir -p postgres/secrets/
+[ ! -e postgres/secrets/password ] && (head -c 32 /dev/urandom | base64 -w0 > postgres/secrets/password)

docs/examples/kustomize/install-cert-manager.bash

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -eux
+kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.4.0/cert-manager.yaml

docs/examples/kustomize/postgres/deployment.yaml

@@ -0,0 +1,81 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: headscale
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: headscale
+  template:
+    metadata:
+      labels:
+        app: headscale
+    spec:
+      containers:
+        - name: headscale
+          image: "headscale:latest"
+          imagePullPolicy: IfNotPresent
+          command: ["/go/bin/headscale", "serve"]
+          env:
+            - name: SERVER_URL
+              value: $(PUBLIC_PROTO)://$(PUBLIC_HOSTNAME)
+            - name: LISTEN_ADDR
+              valueFrom:
+                configMapKeyRef:
+                  name: headscale-config
+                  key: listen_addr
+            - name: METRICS_LISTEN_ADDR
+              valueFrom:
+                configMapKeyRef:
+                  name: headscale-config
+                  key: metrics_listen_addr
+            - name: DERP_MAP_PATH
+              value: /vol/config/derp.yaml
+            - name: EPHEMERAL_NODE_INACTIVITY_TIMEOUT
+              valueFrom:
+                configMapKeyRef:
+                  name: headscale-config
+                  key: ephemeral_node_inactivity_timeout
+            - name: DB_TYPE
+              value: postgres
+            - name: DB_HOST
+              value: postgres.headscale.svc.cluster.local
+            - name: DB_PORT
+              value: "5432"
+            - name: DB_USER
+              value: headscale
+            - name: DB_PASS
+              valueFrom:
+                secretKeyRef:
+                  name: postgresql
+                  key: password
+            - name: DB_NAME
+              value: headscale
+          ports:
+            - name: http
+              protocol: TCP
+              containerPort: 8080
+          livenessProbe:
+            tcpSocket:
+              port: http
+            initialDelaySeconds: 30
+            timeoutSeconds: 5
+            periodSeconds: 15
+          volumeMounts:
+            - name: config
+              mountPath: /vol/config
+            - name: secret
+              mountPath: /vol/secret
+            - name: etc
+              mountPath: /etc/headscale
+      volumes:
+        - name: config
+          configMap:
+            name: headscale-site
+        - name: etc
+          configMap:
+            name: headscale-etc
+        - name: secret
+          secret:
+            secretName: headscale

docs/examples/kustomize/postgres/kustomization.yaml

@@ -0,0 +1,13 @@
+namespace: headscale
+bases:
+  - ../base
+resources:
+  - deployment.yaml
+  - postgres-service.yaml
+  - postgres-statefulset.yaml
+generatorOptions:
+  disableNameSuffixHash: true
+secretGenerator:
+  - name: postgresql
+    files:
+      - secrets/password

docs/examples/kustomize/postgres/postgres-service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+spec:
+  selector:
+    app: postgres
+  ports:
+    - name: postgres
+      targetPort: postgres
+      port: 5432

docs/examples/kustomize/postgres/postgres-statefulset.yaml

@@ -0,0 +1,49 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: postgres
+spec:
+  serviceName: postgres
+  replicas: 1
+  selector:
+    matchLabels:
+      app: postgres
+  template:
+    metadata:
+      labels:
+        app: postgres
+    spec:
+      containers:
+        - name: postgres
+          image: "postgres:13"
+          imagePullPolicy: IfNotPresent
+          env:
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgresql
+                  key: password
+            - name: POSTGRES_USER
+              value: headscale
+          ports:
+            - name: postgres
+              protocol: TCP
+              containerPort: 5432
+          livenessProbe:
+            tcpSocket:
+              port: 5432
+            initialDelaySeconds: 30
+            timeoutSeconds: 5
+            periodSeconds: 15
+          volumeMounts:
+            - name: pgdata
+              mountPath: /var/lib/postgresql/data
+  volumeClaimTemplates:
+    - metadata:
+        name: pgdata
+      spec:
+        storageClassName: local-path
+        accessModes: ["ReadWriteOnce"]
+        resources:
+          requests:
+            storage: 1Gi

docs/examples/kustomize/production-tls/ingress-patch.yaml

@@ -0,0 +1,11 @@
+kind: Ingress
+metadata:
+  name: headscale
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt-production
+    traefik.ingress.kubernetes.io/router.tls: "true"
+spec:
+  tls:
+    - hosts:
+        - $(PUBLIC_HOSTNAME)
+      secretName: production-cert

docs/examples/kustomize/production-tls/kustomization.yaml

@@ -0,0 +1,9 @@
+namespace: headscale
+bases:
+  - ../base
+resources:
+  - production-issuer.yaml
+patches:
+  - path: ingress-patch.yaml
+    target:
+      kind: Ingress

docs/examples/kustomize/production-tls/production-issuer.yaml

@@ -0,0 +1,16 @@
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt-production
+spec:
+  acme:
+    # TODO: figure out how to get kustomize to interpolate this, or use a transformer
+    #email: $(CONTACT_EMAIL)
+    server: https://acme-v02.api.letsencrypt.org/directory
+    privateKeySecretRef:
+      # Secret resource used to store the account's private key.
+      name: letsencrypt-production-acc-key
+    solvers:
+      - http01:
+          ingress:
+            class: traefik

docs/examples/kustomize/sqlite/kustomization.yaml

@@ -0,0 +1,5 @@
+namespace: headscale
+bases:
+  - ../base
+resources:
+  - statefulset.yaml

docs/examples/kustomize/sqlite/statefulset.yaml

@@ -0,0 +1,82 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: headscale
+spec:
+  serviceName: headscale
+  replicas: 1
+  selector:
+    matchLabels:
+      app: headscale
+  template:
+    metadata:
+      labels:
+        app: headscale
+    spec:
+      containers:
+        - name: headscale
+          image: "headscale:latest"
+          imagePullPolicy: IfNotPresent
+          command: ["/go/bin/headscale", "serve"]
+          env:
+            - name: SERVER_URL
+              value: $(PUBLIC_PROTO)://$(PUBLIC_HOSTNAME)
+            - name: LISTEN_ADDR
+              valueFrom:
+                configMapKeyRef:
+                  name: headscale-config
+                  key: listen_addr
+            - name: METRICS_LISTEN_ADDR
+              valueFrom:
+                configMapKeyRef:
+                  name: headscale-config
+                  key: metrics_listen_addr
+            - name: DERP_MAP_PATH
+              value: /vol/config/derp.yaml
+            - name: EPHEMERAL_NODE_INACTIVITY_TIMEOUT
+              valueFrom:
+                configMapKeyRef:
+                  name: headscale-config
+                  key: ephemeral_node_inactivity_timeout
+            - name: DB_TYPE
+              value: sqlite3
+            - name: DB_PATH
+              value: /vol/data/db.sqlite
+          ports:
+            - name: http
+              protocol: TCP
+              containerPort: 8080
+          livenessProbe:
+            tcpSocket:
+              port: http
+            initialDelaySeconds: 30
+            timeoutSeconds: 5
+            periodSeconds: 15
+          volumeMounts:
+            - name: config
+              mountPath: /vol/config
+            - name: data
+              mountPath: /vol/data
+            - name: secret
+              mountPath: /vol/secret
+            - name: etc
+              mountPath: /etc/headscale
+      volumes:
+        - name: config
+          configMap:
+            name: headscale-site
+        - name: etc
+          configMap:
+            name: headscale-etc
+        - name: secret
+          secret:
+            secretName: headscale
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+      spec:
+        storageClassName: local-path
+        accessModes: ["ReadWriteOnce"]
+        resources:
+          requests:
+            storage: 1Gi