mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-11 10:44:41 +00:00
57a008a1e1
This change focuses on the backend log ID, which is the mostly commonly used in the client. Tests which don't seem to make use of the log ID just use the zero value. Signed-off-by: Will Norris <will@tailscale.com>
1872 lines
51 KiB
Go
1872 lines
51 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package localapi contains the HTTP server handlers for tailscaled's API server.
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package localapi
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import (
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"bytes"
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"context"
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"crypto/rand"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"net"
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"net/http"
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"net/http/httputil"
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"net/netip"
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"net/url"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"time"
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"golang.org/x/exp/slices"
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"tailscale.com/client/tailscale/apitype"
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"tailscale.com/envknob"
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"tailscale.com/health"
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"tailscale.com/hostinfo"
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"tailscale.com/ipn"
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"tailscale.com/ipn/ipnlocal"
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"tailscale.com/ipn/ipnstate"
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"tailscale.com/logtail"
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"tailscale.com/net/netutil"
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"tailscale.com/net/portmapper"
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"tailscale.com/tailcfg"
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"tailscale.com/tka"
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"tailscale.com/types/key"
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"tailscale.com/types/logger"
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"tailscale.com/types/logid"
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"tailscale.com/types/ptr"
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"tailscale.com/util/clientmetric"
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"tailscale.com/util/httpm"
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"tailscale.com/util/mak"
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"tailscale.com/version"
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"tailscale.com/wgengine/monitor"
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)
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type localAPIHandler func(*Handler, http.ResponseWriter, *http.Request)
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// handler is the set of LocalAPI handlers, keyed by the part of the
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// Request.URL.Path after "/localapi/v0/". If the key ends with a trailing slash
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// then it's a prefix match.
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var handler = map[string]localAPIHandler{
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// The prefix match handlers end with a slash:
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"cert/": (*Handler).serveCert,
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"file-put/": (*Handler).serveFilePut,
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"files/": (*Handler).serveFiles,
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"profiles/": (*Handler).serveProfiles,
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// The other /localapi/v0/NAME handlers are exact matches and contain only NAME
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// without a trailing slash:
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"bugreport": (*Handler).serveBugReport,
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"check-ip-forwarding": (*Handler).serveCheckIPForwarding,
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"check-prefs": (*Handler).serveCheckPrefs,
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"component-debug-logging": (*Handler).serveComponentDebugLogging,
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"debug": (*Handler).serveDebug,
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"debug-derp-region": (*Handler).serveDebugDERPRegion,
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"debug-packet-filter-matches": (*Handler).serveDebugPacketFilterMatches,
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"debug-packet-filter-rules": (*Handler).serveDebugPacketFilterRules,
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"debug-portmap": (*Handler).serveDebugPortmap,
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"debug-peer-endpoint-changes": (*Handler).serveDebugPeerEndpointChanges,
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"debug-capture": (*Handler).serveDebugCapture,
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"debug-log": (*Handler).serveDebugLog,
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"derpmap": (*Handler).serveDERPMap,
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"dev-set-state-store": (*Handler).serveDevSetStateStore,
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"set-push-device-token": (*Handler).serveSetPushDeviceToken,
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"dial": (*Handler).serveDial,
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"file-targets": (*Handler).serveFileTargets,
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"goroutines": (*Handler).serveGoroutines,
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"id-token": (*Handler).serveIDToken,
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"login-interactive": (*Handler).serveLoginInteractive,
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"logout": (*Handler).serveLogout,
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"logtap": (*Handler).serveLogTap,
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"metrics": (*Handler).serveMetrics,
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"ping": (*Handler).servePing,
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"prefs": (*Handler).servePrefs,
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"pprof": (*Handler).servePprof,
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"reset-auth": (*Handler).serveResetAuth,
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"serve-config": (*Handler).serveServeConfig,
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"set-dns": (*Handler).serveSetDNS,
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"set-expiry-sooner": (*Handler).serveSetExpirySooner,
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"start": (*Handler).serveStart,
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"status": (*Handler).serveStatus,
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"tka/init": (*Handler).serveTKAInit,
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"tka/log": (*Handler).serveTKALog,
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"tka/modify": (*Handler).serveTKAModify,
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"tka/sign": (*Handler).serveTKASign,
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"tka/status": (*Handler).serveTKAStatus,
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"tka/disable": (*Handler).serveTKADisable,
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"tka/force-local-disable": (*Handler).serveTKALocalDisable,
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"tka/affected-sigs": (*Handler).serveTKAAffectedSigs,
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"tka/wrap-preauth-key": (*Handler).serveTKAWrapPreauthKey,
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"upload-client-metrics": (*Handler).serveUploadClientMetrics,
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"watch-ipn-bus": (*Handler).serveWatchIPNBus,
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"whois": (*Handler).serveWhoIs,
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}
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func randHex(n int) string {
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b := make([]byte, n)
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rand.Read(b)
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return hex.EncodeToString(b)
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}
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var (
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// The clientmetrics package is stateful, but we want to expose a simple
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// imperative API to local clients, so we need to keep track of
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// clientmetric.Metric instances that we've created for them. These need to
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// be globals because we end up creating many Handler instances for the
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// lifetime of a client.
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metricsMu sync.Mutex
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metrics = map[string]*clientmetric.Metric{}
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)
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func NewHandler(b *ipnlocal.LocalBackend, logf logger.Logf, logID logid.PublicID) *Handler {
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return &Handler{b: b, logf: logf, backendLogID: logID}
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}
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type Handler struct {
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// RequiredPassword, if non-empty, forces all HTTP
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// requests to have HTTP basic auth with this password.
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// It's used by the sandboxed macOS sameuserproof GUI auth mechanism.
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RequiredPassword string
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// PermitRead is whether read-only HTTP handlers are allowed.
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PermitRead bool
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// PermitWrite is whether mutating HTTP handlers are allowed.
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// If PermitWrite is true, everything is allowed.
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// It effectively means that the user is root or the admin
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// (operator user).
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PermitWrite bool
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// PermitCert is whether the client is additionally granted
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// cert fetching access.
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PermitCert bool
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b *ipnlocal.LocalBackend
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logf logger.Logf
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backendLogID logid.PublicID
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}
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func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if h.b == nil {
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http.Error(w, "server has no local backend", http.StatusInternalServerError)
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return
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}
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if r.Referer() != "" || r.Header.Get("Origin") != "" || !h.validHost(r.Host) {
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metricInvalidRequests.Add(1)
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http.Error(w, "invalid localapi request", http.StatusForbidden)
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return
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}
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w.Header().Set("Tailscale-Version", version.Long())
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w.Header().Set("Tailscale-Cap", strconv.Itoa(int(tailcfg.CurrentCapabilityVersion)))
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w.Header().Set("Content-Security-Policy", `default-src 'none'; frame-ancestors 'none'; script-src 'none'; script-src-elem 'none'; script-src-attr 'none'`)
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w.Header().Set("X-Frame-Options", "DENY")
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w.Header().Set("X-Content-Type-Options", "nosniff")
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if h.RequiredPassword != "" {
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_, pass, ok := r.BasicAuth()
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if !ok {
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metricInvalidRequests.Add(1)
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http.Error(w, "auth required", http.StatusUnauthorized)
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return
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}
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if pass != h.RequiredPassword {
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metricInvalidRequests.Add(1)
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http.Error(w, "bad password", http.StatusForbidden)
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return
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}
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}
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if fn, ok := handlerForPath(r.URL.Path); ok {
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fn(h, w, r)
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} else {
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http.NotFound(w, r)
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}
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}
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// validLocalHostForTesting allows loopback handlers without RequiredPassword for testing.
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var validLocalHostForTesting = false
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// validHost reports whether h is a valid Host header value for a LocalAPI request.
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func (h *Handler) validHost(hostname string) bool {
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// The client code sends a hostname of "local-tailscaled.sock".
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switch hostname {
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case "", apitype.LocalAPIHost:
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return true
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}
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if !validLocalHostForTesting && h.RequiredPassword == "" {
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return false // only allow localhost with basic auth or in tests
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}
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host, _, err := net.SplitHostPort(hostname)
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if err != nil {
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return false
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}
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if host == "localhost" {
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return true
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}
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addr, err := netip.ParseAddr(host)
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if err != nil {
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return false
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}
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return addr.IsLoopback()
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}
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// handlerForPath returns the LocalAPI handler for the provided Request.URI.Path.
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// (the path doesn't include any query parameters)
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func handlerForPath(urlPath string) (h localAPIHandler, ok bool) {
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if urlPath == "/" {
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return (*Handler).serveLocalAPIRoot, true
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}
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suff, ok := strings.CutPrefix(urlPath, "/localapi/v0/")
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if !ok {
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// Currently all LocalAPI methods start with "/localapi/v0/" to signal
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// to people that they're not necessarily stable APIs. In practice we'll
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// probably need to keep them pretty stable anyway, but for now treat
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// them as an internal implementation detail.
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return nil, false
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}
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if fn, ok := handler[suff]; ok {
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// Here we match exact handler suffixes like "status" or ones with a
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// slash already in their name, like "tka/status".
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return fn, true
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}
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// Otherwise, it might be a prefix match like "files/*" which we look up
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// by the prefix including first trailing slash.
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if i := strings.IndexByte(suff, '/'); i != -1 {
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suff = suff[:i+1]
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if fn, ok := handler[suff]; ok {
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return fn, true
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}
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}
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return nil, false
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}
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func (*Handler) serveLocalAPIRoot(w http.ResponseWriter, r *http.Request) {
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io.WriteString(w, "tailscaled\n")
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}
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// serveIDToken handles requests to get an OIDC ID token.
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func (h *Handler) serveIDToken(w http.ResponseWriter, r *http.Request) {
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if !h.PermitWrite {
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http.Error(w, "id-token access denied", http.StatusForbidden)
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return
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}
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nm := h.b.NetMap()
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if nm == nil {
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http.Error(w, "no netmap", http.StatusServiceUnavailable)
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return
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}
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aud := strings.TrimSpace(r.FormValue("aud"))
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if len(aud) == 0 {
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http.Error(w, "no audience requested", http.StatusBadRequest)
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return
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}
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req := &tailcfg.TokenRequest{
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CapVersion: tailcfg.CurrentCapabilityVersion,
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Audience: aud,
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NodeKey: nm.NodeKey,
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}
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b, err := json.Marshal(req)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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httpReq, err := http.NewRequest("POST", "https://unused/machine/id-token", bytes.NewReader(b))
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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resp, err := h.b.DoNoiseRequest(httpReq)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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defer resp.Body.Close()
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w.WriteHeader(resp.StatusCode)
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if _, err := io.Copy(w, resp.Body); err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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}
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func (h *Handler) serveBugReport(w http.ResponseWriter, r *http.Request) {
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if !h.PermitRead {
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http.Error(w, "bugreport access denied", http.StatusForbidden)
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return
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}
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if r.Method != "POST" {
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http.Error(w, "only POST allowed", http.StatusMethodNotAllowed)
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return
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}
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defer h.b.TryFlushLogs() // kick off upload after bugreport's done logging
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logMarker := func() string {
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return fmt.Sprintf("BUG-%v-%v-%v", h.backendLogID, time.Now().UTC().Format("20060102150405Z"), randHex(8))
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}
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if envknob.NoLogsNoSupport() {
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logMarker = func() string { return "BUG-NO-LOGS-NO-SUPPORT-this-node-has-had-its-logging-disabled" }
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}
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startMarker := logMarker()
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h.logf("user bugreport: %s", startMarker)
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if note := r.URL.Query().Get("note"); len(note) > 0 {
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h.logf("user bugreport note: %s", note)
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}
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hi, _ := json.Marshal(hostinfo.New())
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h.logf("user bugreport hostinfo: %s", hi)
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if err := health.OverallError(); err != nil {
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h.logf("user bugreport health: %s", err.Error())
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} else {
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h.logf("user bugreport health: ok")
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}
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// Information about the current node from the netmap
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if nm := h.b.NetMap(); nm != nil {
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if self := nm.SelfNode; self != nil {
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h.logf("user bugreport node info: nodeid=%q stableid=%q expiry=%q", self.ID, self.StableID, self.KeyExpiry.Format(time.RFC3339))
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}
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h.logf("user bugreport public keys: machine=%q node=%q", nm.MachineKey, nm.NodeKey)
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} else {
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h.logf("user bugreport netmap: no active netmap")
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}
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// Print all envknobs; we otherwise only print these on startup, and
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// printing them here ensures we don't have to go spelunking through
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// logs for them.
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envknob.LogCurrent(logger.WithPrefix(h.logf, "user bugreport: "))
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if defBool(r.URL.Query().Get("diagnose"), false) {
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h.b.Doctor(r.Context(), logger.WithPrefix(h.logf, "diag: "))
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}
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w.Header().Set("Content-Type", "text/plain")
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fmt.Fprintln(w, startMarker)
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// Nothing else to do if we're not in record mode; we wrote the marker
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// above, so we can just finish our response now.
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if !defBool(r.URL.Query().Get("record"), false) {
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return
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}
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until := time.Now().Add(12 * time.Hour)
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var changed map[string]bool
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for _, component := range []string{"magicsock"} {
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if h.b.GetComponentDebugLogging(component).IsZero() {
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if err := h.b.SetComponentDebugLogging(component, until); err != nil {
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h.logf("bugreport: error setting component %q logging: %v", component, err)
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continue
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}
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mak.Set(&changed, component, true)
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}
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}
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defer func() {
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for component := range changed {
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h.b.SetComponentDebugLogging(component, time.Time{})
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}
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}()
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// NOTE(andrew): if we have anything else we want to do while recording
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// a bugreport, we can add it here.
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// Read from the client; this will also return when the client closes
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// the connection.
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var buf [1]byte
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_, err := r.Body.Read(buf[:])
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switch {
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case err == nil:
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// good
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case errors.Is(err, io.EOF):
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// good
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case errors.Is(err, io.ErrUnexpectedEOF):
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// this happens when Ctrl-C'ing the tailscale client; don't
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// bother logging an error
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default:
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// Log but continue anyway.
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h.logf("user bugreport: error reading body: %v", err)
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}
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// Generate another log marker and return it to the client.
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endMarker := logMarker()
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h.logf("user bugreport end: %s", endMarker)
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fmt.Fprintln(w, endMarker)
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}
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func (h *Handler) serveWhoIs(w http.ResponseWriter, r *http.Request) {
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if !h.PermitRead {
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http.Error(w, "whois access denied", http.StatusForbidden)
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return
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}
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b := h.b
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var ipp netip.AddrPort
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if v := r.FormValue("addr"); v != "" {
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var err error
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ipp, err = netip.ParseAddrPort(v)
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if err != nil {
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http.Error(w, "invalid 'addr' parameter", 400)
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return
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}
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} else {
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http.Error(w, "missing 'addr' parameter", 400)
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return
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}
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n, u, ok := b.WhoIs(ipp)
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if !ok {
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http.Error(w, "no match for IP:port", 404)
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return
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}
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res := &apitype.WhoIsResponse{
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Node: n,
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UserProfile: &u,
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Caps: b.PeerCaps(ipp.Addr()),
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}
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j, err := json.MarshalIndent(res, "", "\t")
|
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if err != nil {
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http.Error(w, "JSON encoding error", 500)
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return
|
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}
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w.Header().Set("Content-Type", "application/json")
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w.Write(j)
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}
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func (h *Handler) serveGoroutines(w http.ResponseWriter, r *http.Request) {
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// Require write access out of paranoia that the goroutine dump
|
|
// (at least its arguments) might contain something sensitive.
|
|
if !h.PermitWrite {
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http.Error(w, "goroutine dump access denied", http.StatusForbidden)
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return
|
|
}
|
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buf := make([]byte, 2<<20)
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|
buf = buf[:runtime.Stack(buf, true)]
|
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w.Header().Set("Content-Type", "text/plain")
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w.Write(buf)
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}
|
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|
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// serveLogTap taps into the tailscaled/logtail server output and streams
|
|
// it to the client.
|
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func (h *Handler) serveLogTap(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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|
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// Require write access (~root) as the logs could contain something
|
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// sensitive.
|
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if !h.PermitWrite {
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http.Error(w, "logtap access denied", http.StatusForbidden)
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return
|
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}
|
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if r.Method != "GET" {
|
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http.Error(w, "GET required", http.StatusMethodNotAllowed)
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return
|
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}
|
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f, ok := w.(http.Flusher)
|
|
if !ok {
|
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http.Error(w, "streaming unsupported", http.StatusInternalServerError)
|
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return
|
|
}
|
|
|
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io.WriteString(w, `{"text":"[logtap connected]\n"}`+"\n")
|
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f.Flush()
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|
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msgc := make(chan string, 16)
|
|
unreg := logtail.RegisterLogTap(msgc)
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defer unreg()
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|
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for {
|
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select {
|
|
case <-ctx.Done():
|
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return
|
|
case msg := <-msgc:
|
|
io.WriteString(w, msg)
|
|
f.Flush()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (h *Handler) serveMetrics(w http.ResponseWriter, r *http.Request) {
|
|
// Require write access out of paranoia that the metrics
|
|
// might contain something sensitive.
|
|
if !h.PermitWrite {
|
|
http.Error(w, "metric access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "text/plain")
|
|
clientmetric.WritePrometheusExpositionFormat(w)
|
|
}
|
|
|
|
func (h *Handler) serveDebug(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "POST required", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
// The action is normally in a POST form parameter, but
|
|
// some actions (like "notify") want a full JSON body, so
|
|
// permit some to have their action in a header.
|
|
var action string
|
|
switch v := r.Header.Get("Debug-Action"); v {
|
|
case "notify":
|
|
action = v
|
|
default:
|
|
action = r.FormValue("action")
|
|
}
|
|
var err error
|
|
switch action {
|
|
case "rebind":
|
|
err = h.b.DebugRebind()
|
|
case "restun":
|
|
err = h.b.DebugReSTUN()
|
|
case "enginestatus":
|
|
// serveRequestEngineStatus kicks off a call to RequestEngineStatus (via
|
|
// LocalBackend => UserspaceEngine => LocalBackend =>
|
|
// ipn.Notify{Engine}).
|
|
//
|
|
// This is a temporary (2022-11-25) measure for the Windows client's
|
|
// move to the LocalAPI HTTP interface. It was polling this over the IPN
|
|
// bus before every 2 seconds which is wasteful. We should add a bit to
|
|
// WatchIPNMask instead to let an IPN bus watcher say that it's
|
|
// interested in that info and then only send it on demand, not via
|
|
// polling. But for now we keep this interface because that's what the
|
|
// client already did. A future change will remove this, so don't depend
|
|
// on it.
|
|
h.b.RequestEngineStatus()
|
|
case "notify":
|
|
var n ipn.Notify
|
|
err = json.NewDecoder(r.Body).Decode(&n)
|
|
if err != nil {
|
|
break
|
|
}
|
|
h.b.DebugNotify(n)
|
|
|
|
case "":
|
|
err = fmt.Errorf("missing parameter 'action'")
|
|
default:
|
|
err = fmt.Errorf("unknown action %q", action)
|
|
}
|
|
if err != nil {
|
|
http.Error(w, err.Error(), 400)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "text/plain")
|
|
io.WriteString(w, "done\n")
|
|
}
|
|
|
|
func (h *Handler) serveDevSetStateStore(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "POST required", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
if err := h.b.SetDevStateStore(r.FormValue("key"), r.FormValue("value")); err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "text/plain")
|
|
io.WriteString(w, "done\n")
|
|
}
|
|
|
|
func (h *Handler) serveDebugPacketFilterRules(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
nm := h.b.NetMap()
|
|
if nm == nil {
|
|
http.Error(w, "no netmap", http.StatusNotFound)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
|
|
enc := json.NewEncoder(w)
|
|
enc.SetIndent("", "\t")
|
|
enc.Encode(nm.PacketFilterRules)
|
|
}
|
|
|
|
func (h *Handler) serveDebugPacketFilterMatches(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
nm := h.b.NetMap()
|
|
if nm == nil {
|
|
http.Error(w, "no netmap", http.StatusNotFound)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
|
|
enc := json.NewEncoder(w)
|
|
enc.SetIndent("", "\t")
|
|
enc.Encode(nm.PacketFilter)
|
|
}
|
|
|
|
func (h *Handler) serveDebugPortmap(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "text/plain")
|
|
|
|
dur, err := time.ParseDuration(r.FormValue("duration"))
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
gwSelf := r.FormValue("gateway_and_self")
|
|
|
|
// Update portmapper debug flags
|
|
debugKnobs := &portmapper.DebugKnobs{VerboseLogs: true}
|
|
switch r.FormValue("type") {
|
|
case "":
|
|
case "pmp":
|
|
debugKnobs.DisablePCP = true
|
|
debugKnobs.DisableUPnP = true
|
|
case "pcp":
|
|
debugKnobs.DisablePMP = true
|
|
debugKnobs.DisableUPnP = true
|
|
case "upnp":
|
|
debugKnobs.DisablePCP = true
|
|
debugKnobs.DisablePMP = true
|
|
default:
|
|
http.Error(w, "unknown portmap debug type", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
var (
|
|
logLock sync.Mutex
|
|
handlerDone bool
|
|
)
|
|
logf := func(format string, args ...any) {
|
|
if !strings.HasSuffix(format, "\n") {
|
|
format = format + "\n"
|
|
}
|
|
|
|
logLock.Lock()
|
|
defer logLock.Unlock()
|
|
|
|
// The portmapper can call this log function after the HTTP
|
|
// handler returns, which is not allowed and can cause a panic.
|
|
// If this happens, ignore the log lines since this typically
|
|
// occurs due to a client disconnect.
|
|
if handlerDone {
|
|
return
|
|
}
|
|
|
|
// Write and flush each line to the client so that output is streamed
|
|
fmt.Fprintf(w, format, args...)
|
|
if f, ok := w.(http.Flusher); ok {
|
|
f.Flush()
|
|
}
|
|
}
|
|
defer func() {
|
|
logLock.Lock()
|
|
handlerDone = true
|
|
logLock.Unlock()
|
|
}()
|
|
|
|
ctx, cancel := context.WithTimeout(r.Context(), dur)
|
|
defer cancel()
|
|
|
|
done := make(chan bool, 1)
|
|
|
|
var c *portmapper.Client
|
|
c = portmapper.NewClient(logger.WithPrefix(logf, "portmapper: "), debugKnobs, func() {
|
|
logf("portmapping changed.")
|
|
logf("have mapping: %v", c.HaveMapping())
|
|
|
|
if ext, ok := c.GetCachedMappingOrStartCreatingOne(); ok {
|
|
logf("cb: mapping: %v", ext)
|
|
select {
|
|
case done <- true:
|
|
default:
|
|
}
|
|
return
|
|
}
|
|
logf("cb: no mapping")
|
|
})
|
|
defer c.Close()
|
|
|
|
linkMon, err := monitor.New(logger.WithPrefix(logf, "monitor: "))
|
|
if err != nil {
|
|
logf("error creating monitor: %v", err)
|
|
return
|
|
}
|
|
|
|
gatewayAndSelfIP := func() (gw, self netip.Addr, ok bool) {
|
|
if a, b, ok := strings.Cut(gwSelf, "/"); ok {
|
|
gw = netip.MustParseAddr(a)
|
|
self = netip.MustParseAddr(b)
|
|
return gw, self, true
|
|
}
|
|
return linkMon.GatewayAndSelfIP()
|
|
}
|
|
|
|
c.SetGatewayLookupFunc(gatewayAndSelfIP)
|
|
|
|
gw, selfIP, ok := gatewayAndSelfIP()
|
|
if !ok {
|
|
logf("no gateway or self IP; %v", linkMon.InterfaceState())
|
|
return
|
|
}
|
|
logf("gw=%v; self=%v", gw, selfIP)
|
|
|
|
uc, err := net.ListenPacket("udp", "0.0.0.0:0")
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer uc.Close()
|
|
c.SetLocalPort(uint16(uc.LocalAddr().(*net.UDPAddr).Port))
|
|
|
|
res, err := c.Probe(ctx)
|
|
if err != nil {
|
|
logf("error in Probe: %v", err)
|
|
return
|
|
}
|
|
logf("Probe: %+v", res)
|
|
|
|
if !res.PCP && !res.PMP && !res.UPnP {
|
|
logf("no portmapping services available")
|
|
return
|
|
}
|
|
|
|
if ext, ok := c.GetCachedMappingOrStartCreatingOne(); ok {
|
|
logf("mapping: %v", ext)
|
|
} else {
|
|
logf("no mapping")
|
|
}
|
|
|
|
select {
|
|
case <-done:
|
|
case <-ctx.Done():
|
|
if r.Context().Err() == nil {
|
|
logf("serveDebugPortmap: context done: %v", ctx.Err())
|
|
} else {
|
|
h.logf("serveDebugPortmap: context done: %v", ctx.Err())
|
|
}
|
|
}
|
|
}
|
|
|
|
func (h *Handler) serveComponentDebugLogging(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
component := r.FormValue("component")
|
|
secs, _ := strconv.Atoi(r.FormValue("secs"))
|
|
err := h.b.SetComponentDebugLogging(component, time.Now().Add(time.Duration(secs)*time.Second))
|
|
var res struct {
|
|
Error string
|
|
}
|
|
if err != nil {
|
|
res.Error = err.Error()
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(res)
|
|
}
|
|
|
|
// servePprofFunc is the implementation of Handler.servePprof, after auth,
|
|
// for platforms where we want to link it in.
|
|
var servePprofFunc func(http.ResponseWriter, *http.Request)
|
|
|
|
func (h *Handler) servePprof(w http.ResponseWriter, r *http.Request) {
|
|
// Require write access out of paranoia that the profile dump
|
|
// might contain something sensitive.
|
|
if !h.PermitWrite {
|
|
http.Error(w, "profile access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if servePprofFunc == nil {
|
|
http.Error(w, "not implemented on this platform", http.StatusServiceUnavailable)
|
|
return
|
|
}
|
|
servePprofFunc(w, r)
|
|
}
|
|
|
|
func (h *Handler) serveResetAuth(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "reset-auth modify access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
if err := h.b.ResetAuth(); err != nil {
|
|
http.Error(w, "reset-auth failed: "+err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
}
|
|
|
|
func (h *Handler) serveServeConfig(w http.ResponseWriter, r *http.Request) {
|
|
switch r.Method {
|
|
case "GET":
|
|
if !h.PermitRead {
|
|
http.Error(w, "serve config denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
config := h.b.ServeConfig()
|
|
json.NewEncoder(w).Encode(config)
|
|
case "POST":
|
|
if !h.PermitWrite {
|
|
http.Error(w, "serve config denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
configIn := new(ipn.ServeConfig)
|
|
if err := json.NewDecoder(r.Body).Decode(configIn); err != nil {
|
|
writeErrorJSON(w, fmt.Errorf("decoding config: %w", err))
|
|
return
|
|
}
|
|
if err := h.b.SetServeConfig(configIn); err != nil {
|
|
writeErrorJSON(w, fmt.Errorf("updating config: %w", err))
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusOK)
|
|
default:
|
|
http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
|
|
}
|
|
}
|
|
|
|
func (h *Handler) serveCheckIPForwarding(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "IP forwarding check access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
var warning string
|
|
if err := h.b.CheckIPForwarding(); err != nil {
|
|
warning = err.Error()
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(struct {
|
|
Warning string
|
|
}{
|
|
Warning: warning,
|
|
})
|
|
}
|
|
|
|
func (h *Handler) serveStatus(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "status access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
var st *ipnstate.Status
|
|
if defBool(r.FormValue("peers"), true) {
|
|
st = h.b.Status()
|
|
} else {
|
|
st = h.b.StatusWithoutPeers()
|
|
}
|
|
e := json.NewEncoder(w)
|
|
e.SetIndent("", "\t")
|
|
e.Encode(st)
|
|
}
|
|
|
|
func (h *Handler) serveDebugPeerEndpointChanges(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "status access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
|
|
ipStr := r.FormValue("ip")
|
|
if ipStr == "" {
|
|
http.Error(w, "missing 'ip' parameter", 400)
|
|
return
|
|
}
|
|
ip, err := netip.ParseAddr(ipStr)
|
|
if err != nil {
|
|
http.Error(w, "invalid IP", 400)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
chs, err := h.b.GetPeerEndpointChanges(r.Context(), ip)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
|
|
e := json.NewEncoder(w)
|
|
e.SetIndent("", "\t")
|
|
e.Encode(chs)
|
|
}
|
|
|
|
// InUseOtherUserIPNStream reports whether r is a request for the watch-ipn-bus
|
|
// handler. If so, it writes an ipn.Notify InUseOtherUser message to the user
|
|
// and returns true. Otherwise it returns false, in which case it doesn't write
|
|
// to w.
|
|
//
|
|
// Unlike the regular watch-ipn-bus handler, this one doesn't block. The caller
|
|
// (in ipnserver.Server) provides the blocking until the connection is no longer
|
|
// in use.
|
|
func InUseOtherUserIPNStream(w http.ResponseWriter, r *http.Request, err error) (handled bool) {
|
|
if r.Method != "GET" || r.URL.Path != "/localapi/v0/watch-ipn-bus" {
|
|
return false
|
|
}
|
|
js, err := json.Marshal(&ipn.Notify{
|
|
Version: version.Long(),
|
|
State: ptr.To(ipn.InUseOtherUser),
|
|
ErrMessage: ptr.To(err.Error()),
|
|
})
|
|
if err != nil {
|
|
return false
|
|
}
|
|
js = append(js, '\n')
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.Write(js)
|
|
return true
|
|
}
|
|
|
|
func (h *Handler) serveWatchIPNBus(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
f, ok := w.(http.Flusher)
|
|
if !ok {
|
|
http.Error(w, "not a flusher", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
|
|
var mask ipn.NotifyWatchOpt
|
|
if s := r.FormValue("mask"); s != "" {
|
|
v, err := strconv.ParseUint(s, 10, 64)
|
|
if err != nil {
|
|
http.Error(w, "bad mask", http.StatusBadRequest)
|
|
return
|
|
}
|
|
mask = ipn.NotifyWatchOpt(v)
|
|
}
|
|
ctx := r.Context()
|
|
h.b.WatchNotifications(ctx, mask, f.Flush, func(roNotify *ipn.Notify) (keepGoing bool) {
|
|
js, err := json.Marshal(roNotify)
|
|
if err != nil {
|
|
h.logf("json.Marshal: %v", err)
|
|
return false
|
|
}
|
|
if _, err := fmt.Fprintf(w, "%s\n", js); err != nil {
|
|
return false
|
|
}
|
|
f.Flush()
|
|
return true
|
|
})
|
|
}
|
|
|
|
func (h *Handler) serveLoginInteractive(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "login access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "want POST", 400)
|
|
return
|
|
}
|
|
h.b.StartLoginInteractive()
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return
|
|
}
|
|
|
|
func (h *Handler) serveStart(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "want POST", 400)
|
|
return
|
|
}
|
|
var o ipn.Options
|
|
if err := json.NewDecoder(r.Body).Decode(&o); err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
err := h.b.Start(o)
|
|
if err != nil {
|
|
// TODO(bradfitz): map error to a good HTTP error
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
}
|
|
|
|
func (h *Handler) serveLogout(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "logout access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "want POST", 400)
|
|
return
|
|
}
|
|
err := h.b.LogoutSync(r.Context())
|
|
if err == nil {
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return
|
|
}
|
|
http.Error(w, err.Error(), 500)
|
|
}
|
|
|
|
func (h *Handler) servePrefs(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "prefs access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
var prefs ipn.PrefsView
|
|
switch r.Method {
|
|
case "PATCH":
|
|
if !h.PermitWrite {
|
|
http.Error(w, "prefs write access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
mp := new(ipn.MaskedPrefs)
|
|
if err := json.NewDecoder(r.Body).Decode(mp); err != nil {
|
|
http.Error(w, err.Error(), 400)
|
|
return
|
|
}
|
|
var err error
|
|
prefs, err = h.b.EditPrefs(mp)
|
|
if err != nil {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.WriteHeader(http.StatusBadRequest)
|
|
json.NewEncoder(w).Encode(resJSON{Error: err.Error()})
|
|
return
|
|
}
|
|
case "GET", "HEAD":
|
|
prefs = h.b.Prefs()
|
|
default:
|
|
http.Error(w, "unsupported method", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
e := json.NewEncoder(w)
|
|
e.SetIndent("", "\t")
|
|
e.Encode(prefs)
|
|
}
|
|
|
|
type resJSON struct {
|
|
Error string `json:",omitempty"`
|
|
}
|
|
|
|
func (h *Handler) serveCheckPrefs(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "checkprefs access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "unsupported method", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
p := new(ipn.Prefs)
|
|
if err := json.NewDecoder(r.Body).Decode(p); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
err := h.b.CheckPrefs(p)
|
|
var res resJSON
|
|
if err != nil {
|
|
res.Error = err.Error()
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(res)
|
|
}
|
|
|
|
func (h *Handler) serveFiles(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "file access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
suffix, ok := strings.CutPrefix(r.URL.EscapedPath(), "/localapi/v0/files/")
|
|
if !ok {
|
|
http.Error(w, "misconfigured", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
if suffix == "" {
|
|
if r.Method != "GET" {
|
|
http.Error(w, "want GET to list files", 400)
|
|
return
|
|
}
|
|
ctx := r.Context()
|
|
if s := r.FormValue("waitsec"); s != "" && s != "0" {
|
|
d, err := strconv.Atoi(s)
|
|
if err != nil {
|
|
http.Error(w, "invalid waitsec", http.StatusBadRequest)
|
|
return
|
|
}
|
|
deadline := time.Now().Add(time.Duration(d) * time.Second)
|
|
var cancel context.CancelFunc
|
|
ctx, cancel = context.WithDeadline(ctx, deadline)
|
|
defer cancel()
|
|
}
|
|
wfs, err := h.b.AwaitWaitingFiles(ctx)
|
|
if err != nil && ctx.Err() == nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(wfs)
|
|
return
|
|
}
|
|
name, err := url.PathUnescape(suffix)
|
|
if err != nil {
|
|
http.Error(w, "bad filename", 400)
|
|
return
|
|
}
|
|
if r.Method == "DELETE" {
|
|
if err := h.b.DeleteFile(name); err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return
|
|
}
|
|
rc, size, err := h.b.OpenFile(name)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
defer rc.Close()
|
|
w.Header().Set("Content-Length", fmt.Sprint(size))
|
|
w.Header().Set("Content-Type", "application/octet-stream")
|
|
io.Copy(w, rc)
|
|
}
|
|
|
|
func writeErrorJSON(w http.ResponseWriter, err error) {
|
|
if err == nil {
|
|
err = errors.New("unexpected nil error")
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.WriteHeader(500)
|
|
type E struct {
|
|
Error string `json:"error"`
|
|
}
|
|
json.NewEncoder(w).Encode(E{err.Error()})
|
|
}
|
|
|
|
func (h *Handler) serveFileTargets(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "GET" {
|
|
http.Error(w, "want GET to list targets", 400)
|
|
return
|
|
}
|
|
fts, err := h.b.FileTargets()
|
|
if err != nil {
|
|
writeErrorJSON(w, err)
|
|
return
|
|
}
|
|
mak.NonNilSliceForJSON(&fts)
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(fts)
|
|
}
|
|
|
|
// serveFilePut sends a file to another node.
|
|
//
|
|
// It's sometimes possible for clients to do this themselves, without
|
|
// tailscaled, except in the case of tailscaled running in
|
|
// userspace-networking ("netstack") mode, in which case tailscaled
|
|
// needs to a do a netstack dial out.
|
|
//
|
|
// Instead, the CLI also goes through tailscaled so it doesn't need to be
|
|
// aware of the network mode in use.
|
|
//
|
|
// macOS/iOS have always used this localapi method to simplify the GUI
|
|
// clients.
|
|
//
|
|
// The Windows client currently (2021-11-30) uses the peerapi (/v0/put/)
|
|
// directly, as the Windows GUI always runs in tun mode anyway.
|
|
//
|
|
// URL format:
|
|
//
|
|
// - PUT /localapi/v0/file-put/:stableID/:escaped-filename
|
|
func (h *Handler) serveFilePut(w http.ResponseWriter, r *http.Request) {
|
|
metricFilePutCalls.Add(1)
|
|
|
|
if !h.PermitWrite {
|
|
http.Error(w, "file access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "PUT" {
|
|
http.Error(w, "want PUT to put file", 400)
|
|
return
|
|
}
|
|
fts, err := h.b.FileTargets()
|
|
if err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
|
|
upath, ok := strings.CutPrefix(r.URL.EscapedPath(), "/localapi/v0/file-put/")
|
|
if !ok {
|
|
http.Error(w, "misconfigured", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
stableIDStr, filenameEscaped, ok := strings.Cut(upath, "/")
|
|
if !ok {
|
|
http.Error(w, "bogus URL", 400)
|
|
return
|
|
}
|
|
stableID := tailcfg.StableNodeID(stableIDStr)
|
|
|
|
var ft *apitype.FileTarget
|
|
for _, x := range fts {
|
|
if x.Node.StableID == stableID {
|
|
ft = x
|
|
break
|
|
}
|
|
}
|
|
if ft == nil {
|
|
http.Error(w, "node not found", 404)
|
|
return
|
|
}
|
|
dstURL, err := url.Parse(ft.PeerAPIURL)
|
|
if err != nil {
|
|
http.Error(w, "bogus peer URL", 500)
|
|
return
|
|
}
|
|
outReq, err := http.NewRequestWithContext(r.Context(), "PUT", "http://peer/v0/put/"+filenameEscaped, r.Body)
|
|
if err != nil {
|
|
http.Error(w, "bogus outreq", 500)
|
|
return
|
|
}
|
|
outReq.ContentLength = r.ContentLength
|
|
|
|
rp := httputil.NewSingleHostReverseProxy(dstURL)
|
|
rp.Transport = h.b.Dialer().PeerAPITransport()
|
|
rp.ServeHTTP(w, outReq)
|
|
}
|
|
|
|
func (h *Handler) serveSetDNS(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "want POST", 400)
|
|
return
|
|
}
|
|
ctx := r.Context()
|
|
err := h.b.SetDNS(ctx, r.FormValue("name"), r.FormValue("value"))
|
|
if err != nil {
|
|
writeErrorJSON(w, err)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(struct{}{})
|
|
}
|
|
|
|
func (h *Handler) serveDERPMap(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != "GET" {
|
|
http.Error(w, "want GET", 400)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
e := json.NewEncoder(w)
|
|
e.SetIndent("", "\t")
|
|
e.Encode(h.b.DERPMap())
|
|
}
|
|
|
|
// serveSetExpirySooner sets the expiry date on the current machine, specified
|
|
// by an `expiry` unix timestamp as POST or query param.
|
|
func (h *Handler) serveSetExpirySooner(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "POST required", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
var expiryTime time.Time
|
|
if v := r.FormValue("expiry"); v != "" {
|
|
expiryInt, err := strconv.ParseInt(v, 10, 64)
|
|
if err != nil {
|
|
http.Error(w, "can't parse expiry time, expects a unix timestamp", http.StatusBadRequest)
|
|
return
|
|
}
|
|
expiryTime = time.Unix(expiryInt, 0)
|
|
} else {
|
|
http.Error(w, "missing 'expiry' parameter, a unix timestamp", http.StatusBadRequest)
|
|
return
|
|
}
|
|
err := h.b.SetExpirySooner(r.Context(), expiryTime)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "text/plain")
|
|
io.WriteString(w, "done\n")
|
|
}
|
|
|
|
func (h *Handler) servePing(w http.ResponseWriter, r *http.Request) {
|
|
ctx := r.Context()
|
|
if r.Method != "POST" {
|
|
http.Error(w, "want POST", 400)
|
|
return
|
|
}
|
|
ipStr := r.FormValue("ip")
|
|
if ipStr == "" {
|
|
http.Error(w, "missing 'ip' parameter", 400)
|
|
return
|
|
}
|
|
ip, err := netip.ParseAddr(ipStr)
|
|
if err != nil {
|
|
http.Error(w, "invalid IP", 400)
|
|
return
|
|
}
|
|
pingTypeStr := r.FormValue("type")
|
|
if ipStr == "" {
|
|
http.Error(w, "missing 'type' parameter", 400)
|
|
return
|
|
}
|
|
res, err := h.b.Ping(ctx, ip, tailcfg.PingType(pingTypeStr))
|
|
if err != nil {
|
|
writeErrorJSON(w, err)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(res)
|
|
}
|
|
|
|
func (h *Handler) serveDial(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != "POST" {
|
|
http.Error(w, "POST required", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
const upgradeProto = "ts-dial"
|
|
if !strings.Contains(r.Header.Get("Connection"), "upgrade") ||
|
|
r.Header.Get("Upgrade") != upgradeProto {
|
|
http.Error(w, "bad ts-dial upgrade", http.StatusBadRequest)
|
|
return
|
|
}
|
|
hostStr, portStr := r.Header.Get("Dial-Host"), r.Header.Get("Dial-Port")
|
|
if hostStr == "" || portStr == "" {
|
|
http.Error(w, "missing Dial-Host or Dial-Port header", http.StatusBadRequest)
|
|
return
|
|
}
|
|
hijacker, ok := w.(http.Hijacker)
|
|
if !ok {
|
|
http.Error(w, "make request over HTTP/1", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
addr := net.JoinHostPort(hostStr, portStr)
|
|
outConn, err := h.b.Dialer().UserDial(r.Context(), "tcp", addr)
|
|
if err != nil {
|
|
http.Error(w, "dial failure: "+err.Error(), http.StatusBadGateway)
|
|
return
|
|
}
|
|
defer outConn.Close()
|
|
|
|
w.Header().Set("Upgrade", upgradeProto)
|
|
w.Header().Set("Connection", "upgrade")
|
|
w.WriteHeader(http.StatusSwitchingProtocols)
|
|
|
|
reqConn, brw, err := hijacker.Hijack()
|
|
if err != nil {
|
|
h.logf("localapi dial Hijack error: %v", err)
|
|
return
|
|
}
|
|
defer reqConn.Close()
|
|
if err := brw.Flush(); err != nil {
|
|
return
|
|
}
|
|
reqConn = netutil.NewDrainBufConn(reqConn, brw.Reader)
|
|
|
|
errc := make(chan error, 1)
|
|
go func() {
|
|
_, err := io.Copy(reqConn, outConn)
|
|
errc <- err
|
|
}()
|
|
go func() {
|
|
_, err := io.Copy(outConn, reqConn)
|
|
errc <- err
|
|
}()
|
|
<-errc
|
|
}
|
|
|
|
func (h *Handler) serveSetPushDeviceToken(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "set push device token access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "unsupported method", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
var params apitype.SetPushDeviceTokenRequest
|
|
if err := json.NewDecoder(r.Body).Decode(¶ms); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
hostinfo.SetPushDeviceToken(params.PushDeviceToken)
|
|
h.b.ResendHostinfoIfNeeded()
|
|
w.WriteHeader(http.StatusOK)
|
|
}
|
|
|
|
func (h *Handler) serveUploadClientMetrics(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != "POST" {
|
|
http.Error(w, "unsupported method", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
type clientMetricJSON struct {
|
|
Name string `json:"name"`
|
|
// One of "counter" or "gauge"
|
|
Type string `json:"type"`
|
|
Value int `json:"value"`
|
|
}
|
|
|
|
var clientMetrics []clientMetricJSON
|
|
if err := json.NewDecoder(r.Body).Decode(&clientMetrics); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
|
|
metricsMu.Lock()
|
|
defer metricsMu.Unlock()
|
|
|
|
for _, m := range clientMetrics {
|
|
if metric, ok := metrics[m.Name]; ok {
|
|
metric.Add(int64(m.Value))
|
|
} else {
|
|
if clientmetric.HasPublished(m.Name) {
|
|
http.Error(w, "Already have a metric named "+m.Name, 400)
|
|
return
|
|
}
|
|
var metric *clientmetric.Metric
|
|
switch m.Type {
|
|
case "counter":
|
|
metric = clientmetric.NewCounter(m.Name)
|
|
case "gauge":
|
|
metric = clientmetric.NewGauge(m.Name)
|
|
default:
|
|
http.Error(w, "Unknown metric type "+m.Type, 400)
|
|
return
|
|
}
|
|
metrics[m.Name] = metric
|
|
metric.Add(int64(m.Value))
|
|
}
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(struct{}{})
|
|
}
|
|
|
|
func (h *Handler) serveTKAStatus(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "lock status access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.GET {
|
|
http.Error(w, "use GET", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
j, err := json.MarshalIndent(h.b.NetworkLockStatus(), "", "\t")
|
|
if err != nil {
|
|
http.Error(w, "JSON encoding error", 500)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.Write(j)
|
|
}
|
|
|
|
func (h *Handler) serveTKASign(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "lock status access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
type signRequest struct {
|
|
NodeKey key.NodePublic
|
|
RotationPublic []byte
|
|
}
|
|
var req signRequest
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
http.Error(w, "invalid JSON body", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if err := h.b.NetworkLockSign(req.NodeKey, req.RotationPublic); err != nil {
|
|
http.Error(w, "signing failed: "+err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusOK)
|
|
}
|
|
|
|
func (h *Handler) serveTKAInit(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "lock init access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
type initRequest struct {
|
|
Keys []tka.Key
|
|
DisablementValues [][]byte
|
|
SupportDisablement []byte
|
|
}
|
|
var req initRequest
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
|
|
if err := h.b.NetworkLockInit(req.Keys, req.DisablementValues, req.SupportDisablement); err != nil {
|
|
http.Error(w, "initialization failed: "+err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
j, err := json.MarshalIndent(h.b.NetworkLockStatus(), "", "\t")
|
|
if err != nil {
|
|
http.Error(w, "JSON encoding error", 500)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.Write(j)
|
|
}
|
|
|
|
func (h *Handler) serveTKAModify(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "network-lock modify access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
type modifyRequest struct {
|
|
AddKeys []tka.Key
|
|
RemoveKeys []tka.Key
|
|
}
|
|
var req modifyRequest
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
|
|
if err := h.b.NetworkLockModify(req.AddKeys, req.RemoveKeys); err != nil {
|
|
http.Error(w, "network-lock modify failed: "+err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(204)
|
|
}
|
|
|
|
func (h *Handler) serveTKAWrapPreauthKey(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "network-lock modify access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
type wrapRequest struct {
|
|
TSKey string
|
|
TKAKey string // key.NLPrivate.MarshalText
|
|
}
|
|
var req wrapRequest
|
|
if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 12*1024)).Decode(&req); err != nil {
|
|
http.Error(w, "invalid JSON body", http.StatusBadRequest)
|
|
return
|
|
}
|
|
var priv key.NLPrivate
|
|
if err := priv.UnmarshalText([]byte(req.TKAKey)); err != nil {
|
|
http.Error(w, "invalid JSON body", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
wrappedKey, err := h.b.NetworkLockWrapPreauthKey(req.TSKey, priv)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(200)
|
|
w.Write([]byte(wrappedKey))
|
|
}
|
|
|
|
func (h *Handler) serveTKADisable(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "network-lock modify access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
body := io.LimitReader(r.Body, 1024*1024)
|
|
secret, err := ioutil.ReadAll(body)
|
|
if err != nil {
|
|
http.Error(w, "reading secret", 400)
|
|
return
|
|
}
|
|
|
|
if err := h.b.NetworkLockDisable(secret); err != nil {
|
|
http.Error(w, "network-lock disable failed: "+err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
w.WriteHeader(200)
|
|
}
|
|
|
|
func (h *Handler) serveTKALocalDisable(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "network-lock modify access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
// Require a JSON stanza for the body as an additional CSRF protection.
|
|
var req struct{}
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
|
|
if err := h.b.NetworkLockForceLocalDisable(); err != nil {
|
|
http.Error(w, "network-lock local disable failed: "+err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
w.WriteHeader(200)
|
|
}
|
|
|
|
func (h *Handler) serveTKALog(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != httpm.GET {
|
|
http.Error(w, "use GET", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
limit := 50
|
|
if limitStr := r.FormValue("limit"); limitStr != "" {
|
|
l, err := strconv.Atoi(limitStr)
|
|
if err != nil {
|
|
http.Error(w, "parsing 'limit' parameter: "+err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
limit = int(l)
|
|
}
|
|
|
|
updates, err := h.b.NetworkLockLog(limit)
|
|
if err != nil {
|
|
http.Error(w, "reading log failed: "+err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
j, err := json.MarshalIndent(updates, "", "\t")
|
|
if err != nil {
|
|
http.Error(w, "JSON encoding error", 500)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.Write(j)
|
|
}
|
|
|
|
func (h *Handler) serveTKAAffectedSigs(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "use POST", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
keyID, err := ioutil.ReadAll(http.MaxBytesReader(w, r.Body, 2048))
|
|
if err != nil {
|
|
http.Error(w, "reading body", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
sigs, err := h.b.NetworkLockAffectedSigs(keyID)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
j, err := json.MarshalIndent(sigs, "", "\t")
|
|
if err != nil {
|
|
http.Error(w, "JSON encoding error", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.Write(j)
|
|
}
|
|
|
|
// serveProfiles serves profile switching-related endpoints. Supported methods
|
|
// and paths are:
|
|
// - GET /profiles/: list all profiles (JSON-encoded array of ipn.LoginProfiles)
|
|
// - PUT /profiles/: add new profile (no response). A separate
|
|
// StartLoginInteractive() is needed to populate and persist the new profile.
|
|
// - GET /profiles/current: current profile (JSON-ecoded ipn.LoginProfile)
|
|
// - GET /profiles/<id>: output profile (JSON-ecoded ipn.LoginProfile)
|
|
// - POST /profiles/<id>: switch to profile (no response)
|
|
// - DELETE /profiles/<id>: delete profile (no response)
|
|
func (h *Handler) serveProfiles(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "profiles access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
suffix, ok := strings.CutPrefix(r.URL.EscapedPath(), "/localapi/v0/profiles/")
|
|
if !ok {
|
|
http.Error(w, "misconfigured", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
if suffix == "" {
|
|
switch r.Method {
|
|
case httpm.GET:
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(h.b.ListProfiles())
|
|
case httpm.PUT:
|
|
err := h.b.NewProfile()
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusCreated)
|
|
default:
|
|
http.Error(w, "use GET or PUT", http.StatusMethodNotAllowed)
|
|
}
|
|
return
|
|
}
|
|
suffix, err := url.PathUnescape(suffix)
|
|
if err != nil {
|
|
http.Error(w, "bad profile ID", http.StatusBadRequest)
|
|
return
|
|
}
|
|
if suffix == "current" {
|
|
switch r.Method {
|
|
case httpm.GET:
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(h.b.CurrentProfile())
|
|
default:
|
|
http.Error(w, "use GET", http.StatusMethodNotAllowed)
|
|
}
|
|
return
|
|
}
|
|
|
|
profileID := ipn.ProfileID(suffix)
|
|
switch r.Method {
|
|
case httpm.GET:
|
|
profiles := h.b.ListProfiles()
|
|
profileIndex := slices.IndexFunc(profiles, func(p ipn.LoginProfile) bool {
|
|
return p.ID == profileID
|
|
})
|
|
if profileIndex == -1 {
|
|
http.Error(w, "Profile not found", http.StatusNotFound)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(profiles[profileIndex])
|
|
case httpm.POST:
|
|
err := h.b.SwitchProfile(profileID)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
case httpm.DELETE:
|
|
err := h.b.DeleteProfile(profileID)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
default:
|
|
http.Error(w, "use POST or DELETE", http.StatusMethodNotAllowed)
|
|
}
|
|
}
|
|
|
|
func defBool(a string, def bool) bool {
|
|
if a == "" {
|
|
return def
|
|
}
|
|
v, err := strconv.ParseBool(a)
|
|
if err != nil {
|
|
return def
|
|
}
|
|
return v
|
|
}
|
|
|
|
func (h *Handler) serveDebugCapture(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitWrite {
|
|
http.Error(w, "debug access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != "POST" {
|
|
http.Error(w, "POST required", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(200)
|
|
w.(http.Flusher).Flush()
|
|
h.b.StreamDebugCapture(r.Context(), w)
|
|
}
|
|
|
|
func (h *Handler) serveDebugLog(w http.ResponseWriter, r *http.Request) {
|
|
if !h.PermitRead {
|
|
http.Error(w, "debug-log access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
if r.Method != httpm.POST {
|
|
http.Error(w, "only POST allowed", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
defer h.b.TryFlushLogs() // kick off upload after we're done logging
|
|
|
|
type logRequestJSON struct {
|
|
Lines []string
|
|
Prefix string
|
|
}
|
|
|
|
var logRequest logRequestJSON
|
|
if err := json.NewDecoder(r.Body).Decode(&logRequest); err != nil {
|
|
http.Error(w, "invalid JSON body", 400)
|
|
return
|
|
}
|
|
|
|
prefix := logRequest.Prefix
|
|
if prefix == "" {
|
|
prefix = "debug-log"
|
|
}
|
|
logf := logger.WithPrefix(h.logf, prefix+": ")
|
|
|
|
// We can write logs too fast for logtail to handle, even when
|
|
// opting-out of rate limits. Limit ourselves to at most one message
|
|
// per 20ms and a burst of 60 log lines, which should be fast enough to
|
|
// not block for too long but slow enough that we can upload all lines.
|
|
logf = logger.SlowLoggerWithClock(r.Context(), logf, 20*time.Millisecond, 60, time.Now)
|
|
|
|
for _, line := range logRequest.Lines {
|
|
logf("%s", line)
|
|
}
|
|
|
|
w.WriteHeader(http.StatusNoContent)
|
|
}
|
|
|
|
var (
|
|
metricInvalidRequests = clientmetric.NewCounter("localapi_invalid_requests")
|
|
|
|
// User-visible LocalAPI endpoints.
|
|
metricFilePutCalls = clientmetric.NewCounter("localapi_file_put")
|
|
)
|