internal/httpd/accounts.go
658 lines · 22217 bytes
1package httpd
2
3import (
4 "fmt"
5 "html/template"
6 "log"
7 "net/http"
8 "path"
9 "slices"
10 "strconv"
11 "strings"
12 "time"
13
14 gossh "golang.org/x/crypto/ssh"
15
16 "gitbay.org/gitbay/internal/control"
17 "gitbay.org/gitbay/internal/gitutil"
18 "gitbay.org/gitbay/internal/policy"
19 "gitbay.org/gitbay/internal/protocol"
20 "gitbay.org/gitbay/internal/store"
21)
22
23const sessionCookie = "gitbay_session"
24
25// sessionSameSite is Lax so a login link followed from a mail client keeps
26// its session through the redirect. Cross-site POSTs are refused by
27// checkOrigin and carry no Lax cookie anyway.
28const sessionSameSite = http.SameSiteLaxMode
29
30// badLoginToken is what every refused /login?token= gets, whatever the
31// reason. The reasons differ in whether the account exists.
32const badLoginToken = "that login link is invalid, expired, or already used — mint a new one"
33
34// viewer returns the logged-in user, or a zero User for anonymous visitors.
35// Only meaningful in accounts mode; in view_only no session route exists so
36// every request is anonymous.
37func (s *Server) viewer(r *http.Request) store.User {
38 ck, err := r.Cookie(sessionCookie)
39 if err != nil {
40 return store.User{}
41 }
42 u, err := s.st.WebSessionUser(store.HashToken(ck.Value))
43 if err != nil {
44 return store.User{}
45 }
46 return u
47}
48
49// requireUser wraps a handler that needs a session.
50func (s *Server) requireUser(h func(http.ResponseWriter, *http.Request, store.User)) http.HandlerFunc {
51 return func(w http.ResponseWriter, r *http.Request) {
52 u := s.viewer(r)
53 if u.ID == 0 {
54 if r.Method == http.MethodGet {
55 s.setNext(w, r.URL.RequestURI())
56 }
57 http.Redirect(w, r, "/login", http.StatusSeeOther)
58 return
59 }
60 h(w, r, u)
61 }
62}
63
64// checkOrigin rejects cross-site POSTs. It is the primary CSRF defense:
65// sessions use SameSite=Lax, which withholds the cookie from a cross-site
66// POST but not from a cross-site top-level GET.
67func (s *Server) checkOrigin(h http.HandlerFunc) http.HandlerFunc {
68 return func(w http.ResponseWriter, r *http.Request) {
69 if origin := r.Header.Get("Origin"); origin != "" && origin != "null" {
70 host := strings.TrimPrefix(strings.TrimPrefix(origin, "https://"), "http://")
71 if host != r.Host {
72 http.Error(w, "cross-origin request refused", http.StatusForbidden)
73 return
74 }
75 }
76 h(w, r)
77 }
78}
79
80// renderLogin draws the login page. Mode carries the registration mode so
81// the page can tell a brand-new visitor how to get an account. EmailLogin
82// says whether this instance can mail a link; Sent switches the page to the
83// confirmation that follows a request.
84func (s *Server) renderLogin(w http.ResponseWriter, errMsg string, sent bool, next string) {
85 s.render(w, "login.html", struct {
86 basePage
87 Mode string // closed | invite | open
88 Error string
89 EmailLogin bool
90 Sent bool
91 Next string
92 }{basePage{Site: s.siteName(), Host: s.cfg.SiteHost()},
93 s.cfg.Registration.Mode, errMsg, s.emailLoginEnabled(), sent, next})
94}
95
96// emailLoginEnabled reports whether a link can be mailed at all. There is no
97// separate switch: the capability is exactly the SMTP the instance already
98// configured for verification and notification mail.
99func (s *Server) emailLoginEnabled() bool {
100 return s.cfg.Web.Mode == "accounts" && s.cfg.Mail.SMTPHost != ""
101}
102
103// loginSubmit mails a one-time login link. The response is the same page
104// whatever happened, including when nothing happened.
105func (s *Server) loginSubmit(w http.ResponseWriter, r *http.Request) {
106 if !s.emailLoginEnabled() {
107 s.notFound(w, r)
108 return
109 }
110 // The per-account bound lives in the store and survives a restart; this
111 // one stops a single source from spending every account's budget.
112 if allowed, wait := s.apiLimit.allow("login"+s.clientIP(r), true); !allowed {
113 w.Header().Set("Retry-After", strconv.Itoa(int(wait.Seconds())+1))
114 http.Error(w, "too many login requests; wait a moment", http.StatusTooManyRequests)
115 return
116 }
117 if err := control.RequestLoginLink(s.cfg, s.st, r.FormValue("identifier")); err != nil {
118 log.Printf("login link: %v", err)
119 }
120 s.renderLogin(w, "", true, "")
121}
122
123func (s *Server) login(w http.ResponseWriter, r *http.Request) {
124 token := r.URL.Query().Get("token")
125 if token == "" {
126 s.renderLogin(w, "", false, s.peekNext(r))
127 return
128 }
129 userID, err := s.st.ConsumeLoginToken(store.HashToken(token))
130 if err != nil {
131 s.renderLogin(w, badLoginToken, false, "")
132 return
133 }
134 // A token minted before the account was suspended is still consumable,
135 // and the session it would create renders every page the account can
136 // read. Checking here covers every mint path. The message is the one a
137 // bad token gets: a distinct one would confirm the account exists.
138 if u, err := s.st.UserByID(userID); err != nil || u.Disabled {
139 s.renderLogin(w, badLoginToken, false, "")
140 return
141 }
142 sessTok, sessHash, err := store.NewToken()
143 if err != nil {
144 http.Error(w, "internal error", http.StatusInternalServerError)
145 return
146 }
147 if err := s.st.CreateWebSession(sessHash, userID, 7*24*time.Hour); err != nil {
148 http.Error(w, "internal error", http.StatusInternalServerError)
149 return
150 }
151 http.SetCookie(w, s.sessionCookieFor(sessTok))
152 dest := s.takeNext(w, r)
153 if dest == "" {
154 dest = "/"
155 }
156 http.Redirect(w, r, dest, http.StatusSeeOther)
157}
158
159// sessionCookieFor is the cookie a new session ships in. Secure follows TLS
160// the way clearCookie does, so a plain-HTTP deployment still works.
161func (s *Server) sessionCookieFor(tok string) *http.Cookie {
162 return &http.Cookie{
163 Name: sessionCookie, Value: tok, Path: "/",
164 HttpOnly: true, SameSite: sessionSameSite,
165 Secure: s.cfg.HTTP.TLS != "off",
166 MaxAge: 7 * 24 * 3600,
167 }
168}
169
170// logoutForm is GET /logout: the confirmation the rail's signout square
171// and the More menu link to, so the session does not end on one stray
172// click. The button posts to the same path.
173func (s *Server) logoutForm(w http.ResponseWriter, r *http.Request, u store.User) {
174 s.render(w, "logout.html", struct {
175 basePage
176 }{s.baseFor(u)})
177}
178
179func (s *Server) logout(w http.ResponseWriter, r *http.Request) {
180 if ck, err := r.Cookie(sessionCookie); err == nil {
181 s.st.DeleteWebSession(store.HashToken(ck.Value))
182 }
183 http.SetCookie(w, s.clearCookie(sessionCookie, sessionSameSite))
184 http.Redirect(w, r, "/", http.StatusSeeOther)
185}
186
187// adminOrgs lists organizations the user administers, for owner pickers.
188func (s *Server) adminOrgs(u store.User) []string {
189 var out []string
190 if orgs, err := s.st.ListOrgsForUser(u.ID); err == nil {
191 for _, o := range orgs {
192 if o.Role == "admin" {
193 out = append(out, o.Username)
194 }
195 }
196 }
197 return out
198}
199
200func (s *Server) renderNewRepo(w http.ResponseWriter, u store.User, errMsg string) {
201 s.render(w, "new.html", struct {
202 basePage
203 Orgs []string
204 Error string
205 }{s.baseFor(u), s.adminOrgs(u), errMsg})
206}
207
208func (s *Server) newRepoForm(w http.ResponseWriter, r *http.Request, u store.User) {
209 s.renderNewRepo(w, u, "")
210}
211
212// newSubmit creates a repository or an organization: /new carries both
213// forms, told apart by the org form's field. An organization's page is
214// the redirect, the same as org-create from anywhere else.
215func (s *Server) newSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
216 if r.FormValue("field") == "org-create" {
217 name := strings.TrimSpace(r.FormValue("name"))
218 if _, msg, ok := s.runControl(u, []string{"org", "create", name}); !ok {
219 s.renderNewRepo(w, u, msg)
220 return
221 }
222 http.Redirect(w, r, "/"+name, http.StatusSeeOther)
223 return
224 }
225 owner := r.FormValue("owner")
226 if owner == "" {
227 owner = u.Username
228 }
229 name := r.FormValue("name")
230 argv := []string{"repo", "create", owner + "/" + name}
231 if r.FormValue("visibility") == "private" {
232 argv = append(argv, "--private")
233 }
234 if _, msg, ok := s.runControl(u, argv); !ok {
235 s.renderNewRepo(w, u, msg)
236 return
237 }
238 http.Redirect(w, r, "/"+owner+"/"+name, http.StatusSeeOther)
239}
240
241// pinToggle pins or unpins the repo for the logged-in viewer.
242func (s *Server) pinToggle(w http.ResponseWriter, r *http.Request, u store.User) {
243 repo, ok := s.repoForUser(w, r, u, policy.CanRead)
244 if !ok {
245 return
246 }
247 if s.st.IsPinned(u.ID, repo.ID) {
248 s.st.UnpinRepo(u.ID, repo.ID)
249 } else {
250 s.st.PinRepo(u.ID, repo.ID)
251 }
252 http.Redirect(w, r, "/"+repo.Path(), http.StatusSeeOther)
253}
254
255// bookmarkToggle saves or unsaves a repository for the viewer. Read
256// access is all a bookmark needs — it is something you do to someone
257// else's repository — and repoForUser 404s a private one either way.
258func (s *Server) bookmarkToggle(w http.ResponseWriter, r *http.Request, u store.User) {
259 repo, ok := s.repoForUser(w, r, u, policy.CanRead)
260 if !ok {
261 return
262 }
263 verb := "bookmark"
264 if s.st.IsBookmarked(u.ID, repo.ID) {
265 verb = "unbookmark"
266 }
267 if _, msg, ok := s.runControl(u, []string{"repo", verb, repo.Path()}); !ok {
268 s.setFlash(w, msg)
269 }
270 http.Redirect(w, r, "/"+repo.Path(), http.StatusSeeOther)
271}
272
273// bookmarksPage lists what the viewer has saved.
274// bookmarksPage keeps /bookmarks working: the list is a tab on the
275// viewer's own profile now, so there is one page of it rather than two
276// showing the same rows.
277func (s *Server) bookmarksPage(w http.ResponseWriter, r *http.Request, u store.User) {
278 http.Redirect(w, r, "/"+u.Username+"/-/bookmarks", http.StatusSeeOther)
279}
280
281// renderFork draws the fork form: where the copy lands and what it is
282// called. owner and name are what the field should hold, which after a
283// refusal is what was submitted.
284func (s *Server) renderFork(w http.ResponseWriter, u store.User, repo store.Repo, owner, name, errMsg string) {
285 s.render(w, "fork.html", struct {
286 basePage
287 Repo store.Repo
288 Orgs []string
289 Owner string
290 Name string
291 Error string
292 }{s.baseFor(u), repo, s.adminOrgs(u), owner, name, errMsg})
293}
294
295func (s *Server) forkForm(w http.ResponseWriter, r *http.Request, u store.User) {
296 repo, ok := s.repoForUser(w, r, u, policy.CanRead)
297 if !ok {
298 return
299 }
300 s.renderFork(w, u, repo, u.Username, repo.Name, "")
301}
302
303// forkSubmit forks the repository to the owner the form picked and sends
304// them to it. The command decides everything that matters — read access,
305// the right to create under that owner, quota, name collisions — so a
306// refusal comes back as its own message on the form (#174).
307func (s *Server) forkSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
308 repo, ok := s.repoForUser(w, r, u, policy.CanRead)
309 if !ok {
310 return
311 }
312 owner, name := r.FormValue("owner"), r.FormValue("name")
313 if owner == "" {
314 owner = u.Username
315 }
316 if name == "" {
317 name = repo.Name
318 }
319 var fork control.ForkOut
320 argv := []string{"repo", "fork", repo.Path(), "--owner", owner, "--name", name}
321 if msg, ok := s.runControlInto(u, argv, &fork); !ok {
322 s.renderFork(w, u, repo, owner, name, msg)
323 return
324 }
325 http.Redirect(w, r, "/"+fork.Path, http.StatusSeeOther)
326}
327
328// repoForUser is repoFor with a write/read permission requirement for a
329// logged-in user.
330func (s *Server) repoForUser(w http.ResponseWriter, r *http.Request, u store.User,
331 perm func(store.User, store.Repo, string) bool) (store.Repo, bool) {
332 repo, err := s.st.RepoByPath(r.PathValue("owner") + "/" + r.PathValue("repo"))
333 if err != nil {
334 http.NotFound(w, r)
335 return store.Repo{}, false
336 }
337 grant, err := s.st.AccessRole(repo.ID, u.ID)
338 if err != nil {
339 http.Error(w, "internal error", http.StatusInternalServerError)
340 return store.Repo{}, false
341 }
342 if !policy.CanRead(u, repo, grant) {
343 http.NotFound(w, r) // invisible: same as nonexistent
344 return store.Repo{}, false
345 }
346 if !perm(u, repo, grant) {
347 http.Error(w, "permission denied", http.StatusForbidden)
348 return store.Repo{}, false
349 }
350 return repo, true
351}
352
353// signupForm and signupSubmit front the SSH registration path for open
354// and invite instances: same store transactions, same rules, a pasted
355// public key instead of the connecting one.
356func (s *Server) signupForm(w http.ResponseWriter, r *http.Request) {
357 s.renderSignup(w, "", "")
358}
359
360func (s *Server) renderSignup(w http.ResponseWriter, errMsg, username string) {
361 s.render(w, "register.html", struct {
362 basePage
363 Host string
364 Mode string // open | invite
365 Error string
366 Username string
367 }{basePage{Site: s.siteName(), Host: s.cfg.SiteHost()}, s.cfg.SiteHost(), s.cfg.Registration.Mode, errMsg, username})
368}
369
370func (s *Server) signupSubmit(w http.ResponseWriter, r *http.Request) {
371 username := strings.TrimSpace(r.FormValue("username"))
372 keyText := strings.TrimSpace(r.FormValue("key"))
373 pub, _, _, _, err := gossh.ParseAuthorizedKey([]byte(keyText))
374 if err != nil {
375 s.renderSignup(w, "that does not parse as an SSH public key (expected e.g. \"ssh-ed25519 AAAA... comment\")", username)
376 return
377 }
378 msg, errMsg, code := control.RegisterAccount(s.cfg, s.st, pub, username,
379 strings.TrimSpace(r.FormValue("email")), strings.TrimSpace(r.FormValue("invite")))
380 if code != 0 {
381 s.renderSignup(w, errMsg, username)
382 return
383 }
384 s.render(w, "registered.html", struct {
385 basePage
386 Username string
387 Message string
388 Host string
389 }{basePage{Site: s.siteName(), Host: s.cfg.SiteHost()}, username, msg, s.cfg.SiteHost()})
390}
391
392// issueCreateForm renders the new-issue form, prefilled from the repo's
393// default issue template when one exists. A Preview submit comes back
394// here with the draft in the form, so the page returns with everything
395// still typed and the rendering above the textarea (#235).
396func (s *Server) issueCreateForm(w http.ResponseWriter, r *http.Request, u store.User) {
397 p, ok := s.repoFor(w, r, "")
398 if !ok {
399 return
400 }
401 p.Tab = "issues"
402 if wantsPreview(r) {
403 d := s.draftFor(r, p.Repo, "body", "body", bodyFormat(r))
404 s.render(w, "issuenew.html", struct {
405 repoPage
406 Body string
407 Format string
408 Title string
409 Labels string
410 Template string
411 Templates []control.IssueTemplate
412 Draft *draft
413 }{p, d.Body, d.Format, r.FormValue("title"), r.FormValue("labels"),
414 "", control.IssueTemplates(p.Dir, p.Repo.DefaultBranch), d})
415 return
416 }
417 templates := control.IssueTemplates(p.Dir, p.Repo.DefaultBranch)
418 body, tplName := "", ""
419 if want := r.URL.Query().Get("template"); want != "" {
420 for _, t := range templates {
421 if t.Name == want {
422 body, tplName = t.Body, t.Name
423 }
424 }
425 } else {
426 for _, t := range templates {
427 if t.Name == "issue-template.md" || body == "" {
428 body, tplName = t.Body, t.Name
429 }
430 if t.Name == "issue-template.md" {
431 break
432 }
433 }
434 }
435 format := r.URL.Query().Get("format")
436 if format != "org" {
437 format = "md"
438 }
439 s.render(w, "issuenew.html", struct {
440 repoPage
441 Body string
442 Format string
443 Title string
444 Labels string
445 Template string
446 Templates []control.IssueTemplate
447 Draft *draft
448 }{p, body, format, "", "", tplName, templates, nil})
449}
450
451// Issue and merge request writes run the command the CLI runs, so the
452// archived check, notifications, body format and the audit entry have one
453// implementation. Bodies travel on stdin, the way --file - does.
454
455func (s *Server) issueCreateSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
456 repoPath := r.PathValue("owner") + "/" + r.PathValue("repo")
457 title := strings.TrimSpace(r.FormValue("title"))
458 format := bodyFormat(r)
459 if wantsPreview(r) {
460 s.issueCreateForm(w, r, u)
461 return
462 }
463 var created control.Created
464 argv := []string{"issue", "create", repoPath, "--title", title, "--format", format, "--file", "-"}
465 code, msg := s.dispatchIntoStdin(u, argv, r.FormValue("body"), &created)
466 if code != protocol.ExitOK {
467 http.Error(w, msg, statusForExit(code))
468 return
469 }
470 n := created.Number
471 // Labels need write access, matching the SSH rule; the command refuses
472 // otherwise and the issue stands without them.
473 if args := fieldArgs("--add", r.FormValue("labels")); len(args) > 0 {
474 s.runControl(u, append([]string{"issue", "label", repoPath, fmt.Sprint(n)}, args...))
475 }
476 http.Redirect(w, r, fmt.Sprintf("/%s/issues/%d", repoPath, n), http.StatusSeeOther)
477}
478
479// issueEditSubmit edits title/body (author or write) and, with write
480// access, replaces the label set.
481func (s *Server) issueEditSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
482 repoPath := r.PathValue("owner") + "/" + r.PathValue("repo")
483 n := r.PathValue("n")
484 if wantsPreview(r) {
485 s.issuePage(w, r, "edit")
486 return
487 }
488 title := strings.TrimSpace(r.FormValue("title"))
489 code, msg := s.dispatchJSON(u, []string{"issue", "edit", repoPath, n, "--title", title, "--file", "-"}, r.FormValue("body"))
490 if code != protocol.ExitOK {
491 http.Error(w, msg, statusForExit(code))
492 return
493 }
494 var cur struct {
495 Labels []string `json:"labels"`
496 }
497 if _, ok := s.runControlInto(u, []string{"issue", "show", repoPath, n}, &cur); ok {
498 want := strings.Fields(r.FormValue("labels"))
499 var args []string
500 for _, l := range cur.Labels {
501 if !slices.Contains(want, l) {
502 args = append(args, "--remove", l)
503 }
504 }
505 for _, l := range want {
506 if !slices.Contains(cur.Labels, l) {
507 args = append(args, "--add", l)
508 }
509 }
510 if len(args) > 0 {
511 s.runControl(u, append([]string{"issue", "label", repoPath, n}, args...))
512 }
513 }
514 http.Redirect(w, r, fmt.Sprintf("/%s/issues/%s", repoPath, n), http.StatusSeeOther)
515}
516
517// mrEditSubmit edits an MR's title/body (author or write).
518func (s *Server) mrEditSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
519 repoPath := r.PathValue("owner") + "/" + r.PathValue("repo")
520 n := r.PathValue("n")
521 if wantsPreview(r) {
522 s.mrPage(w, r, "edit")
523 return
524 }
525 title := strings.TrimSpace(r.FormValue("title"))
526 code, msg := s.dispatchJSON(u, []string{"mr", "edit", repoPath, n, "--title", title, "--file", "-"}, r.FormValue("body"))
527 if code != protocol.ExitOK {
528 http.Error(w, msg, statusForExit(code))
529 return
530 }
531 http.Redirect(w, r, fmt.Sprintf("/%s/mrs/%s", repoPath, n), http.StatusSeeOther)
532}
533
534func (s *Server) issueCommentSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
535 if wantsPreview(r) {
536 s.issuePage(w, r, "comment")
537 return
538 }
539 s.commentSubmit(w, r, u, "issue", "issues")
540}
541
542func (s *Server) mrCommentSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
543 if wantsPreview(r) {
544 s.mrPage(w, r, "comment")
545 return
546 }
547 s.commentSubmit(w, r, u, "mr", "mrs")
548}
549
550func (s *Server) commentSubmit(w http.ResponseWriter, r *http.Request, u store.User, noun, segment string) {
551 repoPath := r.PathValue("owner") + "/" + r.PathValue("repo")
552 n := r.PathValue("n")
553 code, msg := s.dispatchJSON(u, []string{noun, "comment", repoPath, n, "--file", "-"}, strings.TrimSpace(r.FormValue("body")))
554 if code != protocol.ExitOK {
555 http.Error(w, msg, statusForExit(code))
556 return
557 }
558 http.Redirect(w, r, fmt.Sprintf("/%s/%s/%s", repoPath, segment, n), http.StatusSeeOther)
559}
560
561type editPage struct {
562 basePage
563 Repo store.Repo
564 Ref string
565 Path string
566 Content string
567 Error string
568 Blocked string
569 // Creating marks a path the branch does not have yet.
570 Creating bool
571 // Markup is set for a path the forge renders, which is where a
572 // Preview button makes sense; Draft holds one when asked for (#235).
573 Markup bool
574 Draft *draft
575 Nav fileNav
576}
577
578func (s *Server) editForm(w http.ResponseWriter, r *http.Request, u store.User) {
579 repo, ok := s.repoForUser(w, r, u, policy.CanWrite)
580 if !ok {
581 return
582 }
583 ref := r.PathValue("ref")
584 filePath := strings.Trim(r.PathValue("path"), "/")
585
586 blocked := ""
587 switch {
588 case repo.Settings.RequireSignedCommits:
589 blocked = repo.Path() + " requires signed commits and the web editor cannot sign; edit locally and push a signed commit."
590 case repo.Settings.RequireMR && slices.Contains(repo.Settings.ProtectedBranches, ref):
591 blocked = "branch " + ref + " accepts changes through merge requests only; edit on another branch and open one."
592 }
593
594 dir := control.RepoDir(s.cfg.Server.Root, repo.OwnerName, repo.Name)
595 // A branch that does not exist has nothing to edit. A path that does
596 // not exist on a real branch is a new file: commit-file creates it.
597 if _, err := gitutil.ResolveRef(dir, "refs/heads/"+ref); err != nil {
598 s.notFound(w, r)
599 return
600 }
601 content, err := gitutil.ReadBlob(dir, "refs/heads/"+ref, filePath, maxRenderBytes)
602 creating := err != nil
603 if creating {
604 content = nil
605 }
606 if gitutil.IsBinary(content) {
607 http.Error(w, "binary files cannot be edited in the browser", http.StatusBadRequest)
608 return
609 }
610 navEntries, _ := gitutil.ListTree(dir, "refs/heads/"+ref, navDir(filePath))
611 nav := fileNavFor(repo.Path(), ref, filePath, navEntries)
612 s.render(w, "edit.html", editPage{
613 basePage: s.baseFor(u), Repo: repo,
614 Ref: ref, Path: filePath, Content: string(content), Blocked: blocked, Creating: creating,
615 Markup: markupFile(filePath),
616 Nav: nav,
617 })
618}
619
620func (s *Server) editSubmit(w http.ResponseWriter, r *http.Request, u store.User) {
621 repo, ok := s.repoForUser(w, r, u, policy.CanWrite)
622 if !ok {
623 return
624 }
625 ref := r.PathValue("ref")
626 filePath := strings.Trim(r.PathValue("path"), "/")
627
628 // Preview: the file as the blob page will render it, above the
629 // editor, with nothing committed. Only for paths the forge renders.
630 if wantsPreview(r) && markupFile(filePath) {
631 content := r.FormValue("content")
632 d := s.draftWith(r, "content", "", content, func(raw, _ string) template.HTML {
633 return renderReadme(path.Base(filePath), []byte(raw))
634 })
635 s.render(w, "edit.html", editPage{
636 basePage: s.baseFor(u), Repo: repo,
637 Ref: ref, Path: filePath, Content: content, Markup: true, Draft: d,
638 })
639 return
640 }
641
642 // Editing is a control command; the web supplies the form and lets
643 // the registry enforce the rules — signed-commit policy, verified
644 // identity, archived repositories — so every surface agrees on them.
645 argv := []string{"repo", "commit-file", repo.Path(), filePath, "--ref", ref, "--file", "-"}
646 if message := strings.TrimSpace(r.FormValue("message")); message != "" {
647 argv = append(argv, "--message", message)
648 }
649 if msg, ok := s.runControlStdin(u, argv, r.FormValue("content")); !ok {
650 s.render(w, "edit.html", editPage{
651 basePage: s.baseFor(u), Repo: repo,
652 Ref: ref, Path: filePath, Content: r.FormValue("content"), Error: msg,
653 Markup: markupFile(filePath),
654 })
655 return
656 }
657 http.Redirect(w, r, fmt.Sprintf("/%s/blob/%s/%s", repo.Path(), ref, filePath), http.StatusSeeOther)
658}