cmd/gitbayd/main.go
446 lines · 13734 bytes
1// gitbayd is the forge server daemon. The same binary also runs in hook mode
2// (invoked by git via core.hooksPath) and hosts the host-local admin commands.
3package main
4
5import (
6 "context"
7 "fmt"
8 "io"
9 "log/slog"
10 "net"
11 "net/http"
12 "os"
13 "path/filepath"
14 "strconv"
15 "strings"
16 "time"
17
18 "github.com/spf13/cobra"
19 "golang.org/x/crypto/acme/autocert"
20
21 "gitbay.org/gitbay/internal/buildinfo"
22 "gitbay.org/gitbay/internal/ci"
23 "gitbay.org/gitbay/internal/config"
24 "gitbay.org/gitbay/internal/control"
25 "gitbay.org/gitbay/internal/deps"
26 "gitbay.org/gitbay/internal/gitd"
27 "gitbay.org/gitbay/internal/hookd"
28 "gitbay.org/gitbay/internal/httpd"
29 "gitbay.org/gitbay/internal/mirror"
30 "gitbay.org/gitbay/internal/notify"
31 "gitbay.org/gitbay/internal/sshd"
32 "gitbay.org/gitbay/internal/store"
33 "gitbay.org/gitbay/internal/webhook"
34)
35
36func openStore(cfg config.Config) (*store.Store, error) {
37 s, err := store.Open(filepath.Join(cfg.Server.Root, "gitbay.db"))
38 if err != nil {
39 return nil, err
40 }
41 // Say so when the schema moves. A restart migrates in silence otherwise,
42 // which makes an unexpected schema version hard to attribute to the deploy
43 // that caused it.
44 before, err := s.Version()
45 if err != nil {
46 s.Close()
47 return nil, err
48 }
49 if err := s.MigrateUp(); err != nil {
50 s.Close()
51 return nil, err
52 }
53 after, err := s.Version()
54 if err != nil {
55 s.Close()
56 return nil, err
57 }
58 if after != before {
59 slog.Info("schema migrated", "from", before, "to", after)
60 }
61 return s, nil
62}
63
64var configPath string
65
66func main() {
67 root := &cobra.Command{
68 Use: "gitbayd",
69 Short: "gitbay server daemon",
70 SilenceUsage: true,
71 SilenceErrors: true,
72 }
73 root.PersistentFlags().StringVar(&configPath, "config", "/etc/gitbay/config.toml", "path to config file")
74
75 root.AddCommand(
76 checkConfigCmd(),
77 serveCmd(),
78 migrateCmd(),
79 adminCmd(),
80 hookCmd(),
81 authorizedKeysCmd(),
82 shellCmd(),
83 versionCmd(),
84 )
85
86 if err := root.Execute(); err != nil {
87 fmt.Fprintln(os.Stderr, "gitbayd:", err)
88 os.Exit(1)
89 }
90}
91
92func checkConfigCmd() *cobra.Command {
93 var noHost bool
94 cmd := &cobra.Command{
95 Use: "check-config",
96 Short: "validate the configuration and exit",
97 RunE: func(cmd *cobra.Command, args []string) error {
98 cfg, err := config.Load(configPath)
99 if err != nil {
100 return err
101 }
102 if !noHost {
103 if err := cfg.CheckHost(); err != nil {
104 return err
105 }
106 }
107 fmt.Println("config ok")
108 return nil
109 },
110 }
111 cmd.Flags().BoolVar(&noHost, "no-host-checks", false, "skip host environment probes (port binding, paths)")
112 return cmd
113}
114
115func serveCmd() *cobra.Command {
116 return &cobra.Command{
117 Use: "serve",
118 Short: "run the ssh, http, and git listeners",
119 RunE: func(cmd *cobra.Command, args []string) error {
120 // First line of every run: the journal then says which commit is
121 // serving, without rebuilding the binary to find out.
122 logBuild()
123 cfg, err := config.Load(configPath)
124 if err != nil {
125 return err
126 }
127 warnIfUnmerged(cfg)
128 st, err := openStore(cfg)
129 if err != nil {
130 return err
131 }
132 defer st.Close()
133
134 // Regenerate hook scripts so a moved binary self-heals, then
135 // start the hook policy socket.
136 self, err := os.Executable()
137 if err != nil {
138 return err
139 }
140 if err := hookd.WriteHookScripts(control.HooksDir(cfg.Server.Root), self); err != nil {
141 return err
142 }
143 stopHookd, err := hookd.Serve(cfg, st)
144 if err != nil {
145 return err
146 }
147 defer stopHookd()
148
149 // Outbound webhook deliveries. The retry base is overridable
150 // for tests via GITBAY_WEBHOOK_RETRY_BASE.
151 retryBase := 30 * time.Second
152 if v := os.Getenv("GITBAY_WEBHOOK_RETRY_BASE"); v != "" {
153 if d, err := time.ParseDuration(v); err == nil {
154 retryBase = d
155 }
156 }
157 whCtx, whCancel := context.WithCancel(context.Background())
158 defer whCancel()
159 go webhook.New(st, cfg.Webhooks.AllowLocal, retryBase).Run(whCtx)
160 if cfg.Mail.SMTPHost != "" {
161 go notify.New(st, cfg, retryBase).Run(whCtx)
162 }
163 go mirror.New(st, cfg).Run(whCtx)
164 go (&ci.Scheduler{St: st, SiteURL: cfg.Server.SiteURL,
165 RepoDir: func(owner, name string) string {
166 return control.RepoDir(cfg.Server.Root, owner, name)
167 }}).Run(whCtx)
168 go deps.New(st, cfg, func(owner, name string) string {
169 return control.RepoDir(cfg.Server.Root, owner, name)
170 }, buildinfo.String()).Run(whCtx)
171
172 errCh := make(chan error, 3)
173 if cfg.SSH.Mode == "embedded" {
174 srv, err := sshd.New(cfg, st)
175 if err != nil {
176 return err
177 }
178 ln, err := net.Listen("tcp", net.JoinHostPort("", strconv.Itoa(cfg.SSH.Port)))
179 if err != nil {
180 return err
181 }
182 slog.Info("ssh listening", "addr", ln.Addr())
183 go func() { errCh <- srv.Serve(ln) }()
184 } else {
185 // system mode: the host sshd owns the SSH port and invokes
186 // this binary via AuthorizedKeysCommand + forced command.
187 slog.Info("ssh handled by host sshd (ssh.mode = system)")
188 }
189
190 web := httpd.New(cfg, st)
191 hs := &http.Server{Addr: cfg.HTTP.Addr, Handler: web.Handler()}
192 go func() {
193 slog.Info("http listening", "addr", cfg.HTTP.Addr, "tls", cfg.HTTP.TLS)
194 switch cfg.HTTP.TLS {
195 case "off":
196 errCh <- hs.ListenAndServe()
197 case "files":
198 errCh <- hs.ListenAndServeTLS(cfg.HTTP.CertFile, cfg.HTTP.KeyFile)
199 case "acme":
200 host := cfg.SiteHost()
201 stripPort := func(hp string) string {
202 if h, _, err := net.SplitHostPort(hp); err == nil {
203 return h
204 }
205 return hp
206 }
207 // Beyond the site host, allow <owner>.<pages domain>
208 // for owners that exist — certs come on demand per
209 // subdomain, no wildcard needed.
210 hostPolicy := func(ctx context.Context, h string) error {
211 if h == host {
212 return nil
213 }
214 if pd := cfg.Pages.Domain; pd != "" {
215 if h == pd {
216 return nil // apex: serves a redirect to the forge
217 }
218 if owner, ok := strings.CutSuffix(h, "."+pd); ok &&
219 !strings.Contains(owner, ".") && st.OwnerExists(owner) {
220 return nil
221 }
222 }
223 // Custom pages domains: certs only for claimed hosts.
224 if _, err := st.PageDomainRepo(h); err == nil {
225 return nil
226 }
227 return fmt.Errorf("host %q not served here", h)
228 }
229 m := &autocert.Manager{
230 Prompt: autocert.AcceptTOS,
231 Cache: autocert.DirCache(filepath.Join(cfg.Server.Root, "acme")),
232 HostPolicy: hostPolicy,
233 Email: cfg.HTTP.ACMEEmail,
234 }
235 // TLS-ALPN-01 rides the HTTPS port itself. The optional
236 // plain-HTTP listener adds HTTP-01 and a redirect; losing
237 // it (port 80 taken, no privileges) is not fatal.
238 if addr := cfg.HTTP.ACMEHTTPAddr; addr != "" && addr != "off" {
239 redirect := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
240 // Pages hosts redirect to themselves, not the
241 // forge host.
242 target := host
243 if hostPolicy(r.Context(), stripPort(r.Host)) == nil {
244 target = stripPort(r.Host)
245 }
246 http.Redirect(w, r, "https://"+target+r.URL.RequestURI(), http.StatusMovedPermanently)
247 })
248 go func() {
249 slog.Info("acme http listening", "addr", addr)
250 if err := http.ListenAndServe(addr, m.HTTPHandler(redirect)); err != nil {
251 slog.Warn("acme http listener failed; continuing with TLS-ALPN only", "err", err)
252 }
253 }()
254 }
255 hs.TLSConfig = m.TLSConfig()
256 errCh <- hs.ListenAndServeTLS("", "")
257 }
258 }()
259
260 if cfg.GitDaemon.Enabled {
261 gln, err := net.Listen("tcp", net.JoinHostPort("", strconv.Itoa(cfg.GitDaemon.Port)))
262 if err != nil {
263 return err
264 }
265 slog.Info("git-daemon listening", "addr", gln.Addr())
266 go func() { errCh <- gitd.New(cfg, st).Serve(gln) }()
267 }
268
269 return <-errCh
270 },
271 }
272}
273
274func migrateCmd() *cobra.Command {
275 var to int
276 cmd := &cobra.Command{
277 Use: "migrate",
278 Short: "apply schema migrations",
279 RunE: func(cmd *cobra.Command, args []string) error {
280 cfg, err := config.Load(configPath)
281 if err != nil {
282 return err
283 }
284 s, err := store.Open(cfg.Server.Root + "/gitbay.db")
285 if err != nil {
286 return err
287 }
288 defer s.Close()
289 if err := s.MigrateTo(to); err != nil {
290 return err
291 }
292 v, err := s.Version()
293 if err != nil {
294 return err
295 }
296 fmt.Println("schema version", v)
297 return nil
298 },
299 }
300 cmd.Flags().IntVar(&to, "to", -1, "target schema version (-1 = latest)")
301 return cmd
302}
303
304func adminCmd() *cobra.Command {
305 admin := &cobra.Command{
306 Use: "admin",
307 Short: "host-local administration",
308 }
309 userCmd := &cobra.Command{Use: "user", Short: "manage users"}
310 userCmd.AddCommand(
311 hostUserCreateCmd(),
312 hostCmd("list [--state active|pending|disabled|admin] [--limit n] [--cursor c]", "list accounts", "admin", "user", "list"),
313 hostCmd("show <username>", "show an account: keys, emails, orgs, tokens, sessions", "admin", "user", "show"),
314 hostCmd("disable <username>", "suspend an account: keys and sessions refused until re-enabled", "admin", "user", "disable"),
315 hostCmd("enable <username>", "restore a suspended account", "admin", "user", "enable"),
316 hostCmd("delete <username> --yes", "delete an account that anchors nothing (keys, emails, and sessions go with it)", "admin", "user", "delete"),
317 hostCmd("promote <username>", "make an account an instance admin", "admin", "user", "promote"),
318 hostCmd("demote <username>", "remove instance admin from an account (never the last one)", "admin", "user", "demote"),
319 )
320 emailCmd := &cobra.Command{Use: "email", Short: "manage user emails"}
321 emailCmd.AddCommand(hostCmd("verify <username> <address>", "mark an email verified by admin assertion", "admin", "email", "verify"))
322 repoCmd := &cobra.Command{Use: "repo", Short: "any repository, for moderation (audited)"}
323 repoCmd.AddCommand(
324 hostCmd("list [--owner o] [--visibility public|private] [--limit n] [--cursor c]", "every repository with size and last push", "admin", "repo", "list"),
325 hostCmd("archive <owner/name>", "archive a repository", "admin", "repo", "archive"),
326 hostCmd("unarchive <owner/name>", "unarchive a repository", "admin", "repo", "unarchive"),
327 hostCmd("visibility <owner/name> public|private", "set a repository's visibility", "admin", "repo", "visibility"),
328 hostCmd("delete <owner/name> --yes", "delete a repository", "admin", "repo", "delete"),
329 )
330 configCmd := &cobra.Command{Use: "config", Short: "the configuration in effect"}
331 configCmd.AddCommand(configShowCmd())
332 admin.AddCommand(
333 userCmd,
334 emailCmd,
335 repoCmd,
336 configCmd,
337 hostCmd("invite --email <address>", "issue a registration invite and email its code", "admin", "invite"),
338 hostCmd("stats [--json]", "instance statistics: counts and per-repository disk usage", "admin", "stats"),
339 hostCmd("audit [--limit n] [--json]", "print the security audit log, newest first", "audit"),
340 backupCmd(),
341 gcCmd(),
342 adminMigrateCommitRefsCmd(),
343 adminBackfillActivityCmd(),
344 )
345 return admin
346}
347
348// hostCmd runs a registry command as the host itself: an admin context
349// with no account behind it, so audit rows carry no actor and the source
350// "host". Arguments pass through untouched; the registry owns the flags,
351// which is what keeps this surface and an admin's SSH session from
352// drifting.
353func hostCmd(use, short string, path ...string) *cobra.Command {
354 return &cobra.Command{
355 Use: use,
356 Short: short,
357 DisableFlagParsing: true,
358 RunE: func(cmd *cobra.Command, args []string) error {
359 for _, a := range args {
360 if a == "--help" || a == "-h" {
361 return cmd.Help()
362 }
363 }
364 return runAsHost(path, args, os.Stdin)
365 },
366 }
367}
368
369// hostArgs pulls the root's --config out of args: with flag parsing off,
370// cobra hands the persistent flag through untouched.
371func hostArgs(args []string) []string {
372 var rest []string
373 for i := 0; i < len(args); i++ {
374 switch {
375 case args[i] == "--config" && i+1 < len(args):
376 configPath = args[i+1]
377 i++
378 case strings.HasPrefix(args[i], "--config="):
379 configPath = strings.TrimPrefix(args[i], "--config=")
380 default:
381 rest = append(rest, args[i])
382 }
383 }
384 return rest
385}
386
387func runAsHost(path, args []string, stdin io.Reader) error {
388 args = hostArgs(args)
389 cfg, err := config.Load(configPath)
390 if err != nil {
391 return err
392 }
393 st, err := openStore(cfg)
394 if err != nil {
395 return err
396 }
397 c := &control.Ctx{
398 User: store.User{Username: "host", IsAdmin: true},
399 Scope: "full",
400 Store: st,
401 Cfg: cfg,
402 Stdin: stdin,
403 Stdout: os.Stdout,
404 Stderr: os.Stderr,
405 Source: "host",
406 }
407 code := control.Dispatch(c, append(append([]string{}, path...), args...))
408 st.Close()
409 if code != 0 {
410 os.Exit(code)
411 }
412 return nil
413}
414
415// hostUserCreateCmd keeps --key <path>, which the registry command cannot
416// take (no file paths over SSH): the file becomes the command's stdin.
417func hostUserCreateCmd() *cobra.Command {
418 return &cobra.Command{
419 Use: "create <username> [--admin] [--email <address> [--verified]] [--key <file>]",
420 Short: "create a user (host-local bootstrap; the only path in closed mode)",
421 DisableFlagParsing: true,
422 RunE: func(cmd *cobra.Command, args []string) error {
423 var stdin io.Reader = os.Stdin
424 var rest []string
425 args = hostArgs(args)
426 for i := 0; i < len(args); i++ {
427 switch {
428 case args[i] == "--help" || args[i] == "-h":
429 return cmd.Help()
430 case args[i] == "--key" && i+1 < len(args) && args[i+1] != "-":
431 f, err := os.Open(args[i+1])
432 if err != nil {
433 return err
434 }
435 defer f.Close()
436 stdin = f
437 rest = append(rest, "--key", "-")
438 i++
439 default:
440 rest = append(rest, args[i])
441 }
442 }
443 return runAsHost([]string{"admin", "user", "create"}, rest, stdin)
444 },
445 }
446}