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release/dist/synology: build synology packages with cmd/dist
Updates #8217 Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson
committed by
Dave Anderson
Dave Anderson
parent
399a80785e
commit
32e0ba5e68
306
release/dist/synology/pkgs.go
vendored
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306
release/dist/synology/pkgs.go
vendored
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@@ -0,0 +1,306 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package synology contains dist Targets for building Synology Tailscale packages.
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package synology
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import (
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"archive/tar"
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"bytes"
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"compress/gzip"
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"embed"
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"fmt"
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"io"
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"io/fs"
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"log"
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"os"
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"path/filepath"
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"time"
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"tailscale.com/release/dist"
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)
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type target struct {
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filenameArch string
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dsmMajorVersion int
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goenv map[string]string
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packageCenter bool
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}
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func (t *target) String() string {
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return fmt.Sprintf("synology/dsm%d/%s", t.dsmMajorVersion, t.filenameArch)
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}
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func (t *target) Build(b *dist.Build) ([]string, error) {
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inner, err := getSynologyBuilds(b).buildInnerPackage(b, t.dsmMajorVersion, t.goenv)
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if err != nil {
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return nil, err
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}
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out, err := t.buildSPK(b, inner)
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if err != nil {
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return nil, err
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}
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return []string{out}, nil
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}
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func (t *target) buildSPK(b *dist.Build, inner *innerPkg) (string, error) {
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filename := fmt.Sprintf("tailscale-%s-%s-%d-dsm%d.spk", t.filenameArch, b.Version.Short, b.Version.Synology[t.dsmMajorVersion], t.dsmMajorVersion)
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out := filepath.Join(b.Out, filename)
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log.Printf("Building %s", filename)
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privFile := fmt.Sprintf("privilege-dsm%d", t.dsmMajorVersion)
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if t.packageCenter && t.dsmMajorVersion == 7 {
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privFile += ".for-package-center"
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}
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f, err := os.Create(out)
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if err != nil {
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return "", err
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}
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defer f.Close()
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tw := tar.NewWriter(f)
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defer tw.Close()
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err = writeTar(tw, b.Time,
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memFile("INFO", t.mkInfo(b, inner.uncompressedSz), 0644),
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static("PACKAGE_ICON.PNG", "PACKAGE_ICON.PNG", 0644),
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static("PACKAGE_ICON_256.PNG", "PACKAGE_ICON_256.PNG", 0644),
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static("Tailscale.sc", "Tailscale.sc", 0644),
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dir("conf"),
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static("resource", "conf/resource", 0644),
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static(privFile, "conf/privilege", 0644),
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file(inner.path, "package.tgz", 0644),
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dir("scripts"),
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static("scripts/start-stop-status", "scripts/start-stop-status", 0644),
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static("scripts/postupgrade", "scripts/postupgrade", 0644),
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static("scripts/preupgrade", "scripts/preupgrade", 0644),
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)
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if err != nil {
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return "", err
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}
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if err := tw.Close(); err != nil {
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return "", err
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}
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if err := f.Close(); err != nil {
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return "", err
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}
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return out, nil
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}
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func (t *target) mkInfo(b *dist.Build, uncompressedSz int64) []byte {
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var ret bytes.Buffer
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f := func(k, v string) {
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fmt.Fprintf(&ret, "%s=%q\n", k, v)
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}
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f("package", "Tailscale")
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f("version", fmt.Sprintf("%s-%d", b.Version.Short, b.Version.Synology[t.dsmMajorVersion]))
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f("arch", t.filenameArch)
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f("description", "Connect all your devices using WireGuard, without the hassle.")
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f("displayname", "Tailscale")
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f("maintainer", "Tailscale, Inc.")
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f("maintainer_url", "https://github.com/tailscale/tailscale")
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f("create_time", b.Time.Format("20060102-15:04:05"))
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f("dsmuidir", "ui")
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f("dsmappname", "SYNO.SDS.Tailscale")
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f("startstop_restart_services", "nginx")
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switch t.dsmMajorVersion {
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case 6:
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f("os_min_ver", "6.0.1-7445")
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f("os_max_ver", "7.0-40000")
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case 7:
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f("os_min_ver", "7.0-40000")
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f("os_max_ver", "")
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default:
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panic(fmt.Sprintf("unsupported DSM major version %d", t.dsmMajorVersion))
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}
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f("extractsize", fmt.Sprintf("%v", uncompressedSz>>10)) // in KiB
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return ret.Bytes()
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}
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type synologyBuildsMemoizeKey struct{}
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type innerPkg struct {
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path string
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uncompressedSz int64
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}
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// synologyBuilds is extra build context shared by all synology builds.
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type synologyBuilds struct {
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innerPkgs dist.Memoize[*innerPkg]
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}
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// getSynologyBuilds returns the synologyBuilds for b, creating one if needed.
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func getSynologyBuilds(b *dist.Build) *synologyBuilds {
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return b.Extra(synologyBuildsMemoizeKey{}, func() any { return new(synologyBuilds) }).(*synologyBuilds)
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}
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// buildInnerPackage builds the inner tarball for synology packages,
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// which contains the files to unpack to disk on installation (as
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// opposed to the outer tarball, which contains package metadata)
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func (m *synologyBuilds) buildInnerPackage(b *dist.Build, dsmVersion int, goenv map[string]string) (*innerPkg, error) {
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key := []any{dsmVersion, goenv}
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return m.innerPkgs.Do(key, func() (*innerPkg, error) {
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ts, err := b.BuildGoBinary("tailscale.com/cmd/tailscale", goenv)
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if err != nil {
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return nil, err
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}
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tsd, err := b.BuildGoBinary("tailscale.com/cmd/tailscaled", goenv)
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if err != nil {
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return nil, err
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}
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tmp := b.TmpDir()
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out := filepath.Join(tmp, "package.tgz")
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f, err := os.Create(out)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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gw := gzip.NewWriter(f)
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defer gw.Close()
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cw := &countingWriter{gw, 0}
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tw := tar.NewWriter(cw)
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defer tw.Close()
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err = writeTar(tw, b.Time,
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dir("bin"),
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file(tsd, "bin/tailscaled", 0755),
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file(ts, "bin/tailscale", 0755),
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dir("conf"),
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static("Tailscale.sc", "conf/Tailscale.sc", 0644),
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static(fmt.Sprintf("logrotate-dsm%d", dsmVersion), "conf/logrotate.conf", 0644),
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dir("ui"),
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static("PACKAGE_ICON_256.PNG", "ui/PACKAGE_ICON_256.PNG", 0644),
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static("config", "ui/config", 0644), // TODO: this has "1.8.3" hard-coded in it; why? what is it? bug?
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static("index.cgi", "ui/index.cgi", 0755))
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if err != nil {
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return nil, err
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}
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if err := tw.Close(); err != nil {
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return nil, err
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}
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if err := gw.Close(); err != nil {
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return nil, err
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}
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if err := f.Close(); err != nil {
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return nil, err
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}
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return &innerPkg{out, cw.n}, nil
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})
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}
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// writeTar writes ents to tw.
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func writeTar(tw *tar.Writer, modTime time.Time, ents ...tarEntry) error {
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for _, ent := range ents {
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if err := ent(tw, modTime); err != nil {
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return err
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}
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}
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return nil
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}
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// tarEntry is a function that writes tar entries (files or
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// directories) to a tar.Writer.
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type tarEntry func(*tar.Writer, time.Time) error
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// fsFile returns a tarEntry that writes src in fsys to dst in the tar
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// file, with mode.
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func fsFile(fsys fs.FS, src, dst string, mode int64) tarEntry {
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return func(tw *tar.Writer, modTime time.Time) error {
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f, err := fsys.Open(src)
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if err != nil {
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return err
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}
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defer f.Close()
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fi, err := f.Stat()
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if err != nil {
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return err
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}
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hdr := &tar.Header{
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Name: dst,
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Size: fi.Size(),
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Mode: mode,
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ModTime: modTime,
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}
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if err := tw.WriteHeader(hdr); err != nil {
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return err
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}
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if _, err = io.Copy(tw, f); err != nil {
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return err
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}
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return nil
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}
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}
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// file returns a tarEntry that writes src on disk into the tar file as
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// dst, with mode.
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func file(src, dst string, mode int64) tarEntry {
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return fsFile(os.DirFS(filepath.Dir(src)), filepath.Base(src), dst, mode)
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}
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//go:embed files/*
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var files embed.FS
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// static returns a tarEntry that writes src in files/ into the tar
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// file as dst, with mode.
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func static(src, dst string, mode int64) tarEntry {
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fsys, err := fs.Sub(files, "files")
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if err != nil {
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panic(err)
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}
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return fsFile(fsys, src, dst, mode)
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}
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// memFile returns a tarEntry that writes bs to dst in the tar file,
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// with mode.
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func memFile(dst string, bs []byte, mode int64) tarEntry {
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return func(tw *tar.Writer, modTime time.Time) error {
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hdr := &tar.Header{
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Name: dst,
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Size: int64(len(bs)),
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Mode: mode,
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ModTime: modTime,
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}
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if err := tw.WriteHeader(hdr); err != nil {
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return err
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}
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if _, err := tw.Write(bs); err != nil {
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return err
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}
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return nil
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}
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}
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// dir returns a tarEntry that creates a world-readable directory in
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// the tar file.
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func dir(name string) tarEntry {
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return func(tw *tar.Writer, modTime time.Time) error {
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return tw.WriteHeader(&tar.Header{
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Typeflag: tar.TypeDir,
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Name: name + "/",
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Mode: 0755,
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ModTime: modTime,
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// TODO: why tailscale? Files are being written as owned by root.
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Uname: "tailscale",
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Gname: "tailscale",
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})
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}
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}
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type countingWriter struct {
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w io.Writer
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n int64
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}
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func (cw *countingWriter) Write(bs []byte) (int, error) {
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n, err := cw.w.Write(bs)
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cw.n += int64(n)
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return n, err
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}
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