internal/httpd/routes.go
328 lines · 18189 bytes
1package httpd
2
3import (
4 "fmt"
5 "io/fs"
6 "net"
7 "net/http"
8 "strings"
9
10 "gitbay.org/gitbay/internal/web"
11)
12
13// Route is one entry in the explicit route table. The view-only guarantee is
14// structural: Handler() consults web.mode when building the table, and the
15// route test asserts no mutating route exists in view_only mode.
16type Route struct {
17 Method string
18 Pattern string // without method prefix
19 // Mutating marks routes that can change server state. The git transport
20 // POSTs are not mutating: upload-pack is a pure read, and the
21 // receive-pack endpoint is a static refusal that writes nothing.
22 Mutating bool
23 Handler http.HandlerFunc
24}
25
26// Routes returns the route table for the configured web.mode.
27func (s *Server) Routes() []Route {
28 // Git smart transport (anonymous, public repos only).
29 routes := []Route{
30 {Method: "GET", Pattern: "/{owner}/{repo}/info/refs", Handler: s.infoRefs},
31 {Method: "POST", Pattern: "/{owner}/{repo}/git-upload-pack", Handler: s.uploadPack},
32 {Method: "POST", Pattern: "/{owner}/{repo}/git-receive-pack", Handler: s.receivePackRefusal},
33 // Git LFS: token-authenticated transport (minted over SSH), not
34 // web-session routes — anonymous download for public repos only.
35 {Method: "POST", Pattern: "/{owner}/{repo}/info/lfs/objects/batch", Handler: s.lfsBatch},
36 {Method: "GET", Pattern: "/{owner}/{repo}/info/lfs/objects/{oid}", Handler: s.lfsDownload},
37 {Method: "PUT", Pattern: "/{owner}/{repo}/info/lfs/objects/{oid}", Handler: s.lfsUpload},
38 }
39
40 // Web UI, read-only. These exist in every mode.
41 routes = append(routes,
42 Route{Method: "GET", Pattern: "/{$}", Handler: s.index},
43 Route{Method: "GET", Pattern: "/explore", Handler: s.explore},
44 Route{Method: "GET", Pattern: "/search", Handler: s.globalSearch},
45 Route{Method: "GET", Pattern: "/healthz", Handler: s.healthz},
46 Route{Method: "GET", Pattern: "/privacy", Handler: s.privacy},
47 Route{Method: "GET", Pattern: "/static/style.css", Handler: s.stylesheet},
48 )
49 // One literal route per embedded font file: a {name} wildcard is
50 // ambiguous against /{owner}/{repo}/... patterns in ServeMux precedence,
51 // and hand-typed names drifted from the files once (#102).
52 fonts, _ := fs.ReadDir(web.FontFS, "static/fonts")
53 for _, f := range fonts {
54 routes = append(routes, Route{Method: "GET", Pattern: "/static/fonts/" + f.Name(), Handler: s.font})
55 }
56 images, _ := fs.ReadDir(web.ImageFS, "static/img")
57 for _, f := range images {
58 routes = append(routes, Route{Method: "GET", Pattern: "/static/img/" + f.Name(), Handler: s.image})
59 }
60 routes = append(routes,
61 Route{Method: "GET", Pattern: "/favicon.svg", Handler: s.favicon},
62 Route{Method: "GET", Pattern: "/{owner}", Handler: s.ownerProfile},
63 Route{Method: "GET", Pattern: "/{owner}/{repo}", Handler: s.repoHome},
64 Route{Method: "GET", Pattern: "/{owner}/{repo}/tree/{ref}/{path...}", Handler: s.tree},
65 Route{Method: "GET", Pattern: "/{owner}/{repo}/blob/{ref}/{path...}", Handler: s.blob},
66 Route{Method: "GET", Pattern: "/{owner}/{repo}/blame/{ref}/{path...}", Handler: s.blame},
67 Route{Method: "GET", Pattern: "/{owner}/{repo}/search", Handler: s.search},
68 Route{Method: "GET", Pattern: "/{owner}/{repo}/milestones", Handler: s.milestones},
69 Route{Method: "GET", Pattern: "/{owner}/{repo}/labels", Handler: s.labels},
70 Route{Method: "GET", Pattern: "/{owner}/{repo}/wiki", Handler: s.wiki},
71 Route{Method: "GET", Pattern: "/{owner}/{repo}/wiki/_raw/{path...}", Handler: s.wikiRaw},
72 Route{Method: "GET", Pattern: "/{owner}/{repo}/wiki/{page...}", Handler: s.wiki},
73 Route{Method: "GET", Pattern: "/{owner}/{repo}/releases", Handler: s.releases},
74 Route{Method: "GET", Pattern: "/{owner}/{repo}/releases.atom", Handler: s.releasesAtom},
75 Route{Method: "GET", Pattern: "/{owner}/{repo}/log.atom", Handler: s.logAtom},
76 Route{Method: "GET", Pattern: "/{owner}/{repo}/log.atom/{ref...}", Handler: s.logAtom},
77 Route{Method: "GET", Pattern: "/{owner}/activity.atom", Handler: s.ownerAtom},
78 Route{Method: "GET", Pattern: "/{owner}/-/repositories", Handler: s.ownerProfile},
79 Route{Method: "GET", Pattern: "/{owner}/-/bookmarks", Handler: s.ownerProfile},
80 Route{Method: "GET", Pattern: "/{owner}/-/people", Handler: s.ownerProfile},
81 Route{Method: "GET", Pattern: "/{owner}/-/labels", Handler: s.orgLabels},
82 Route{Method: "GET", Pattern: "/{owner}/-/milestones", Handler: s.orgMilestones},
83 Route{Method: "GET", Pattern: "/{owner}/-/snippets", Handler: s.ownerProfile},
84 Route{Method: "GET", Pattern: "/{owner}/-/snippets/{id}", Handler: s.snippetPage},
85 Route{Method: "GET", Pattern: "/{owner}/-/snippets/{id}/raw/{name}", Handler: s.snippetRaw},
86 Route{Method: "GET", Pattern: "/{owner}/{repo}/builds", Handler: s.builds},
87 Route{Method: "GET", Pattern: "/{owner}/{repo}/badge/build.svg", Handler: s.buildBadge},
88 Route{Method: "GET", Pattern: "/{owner}/{repo}/badge/build.png", Handler: s.buildBadgePNG},
89 Route{Method: "GET", Pattern: "/{owner}/{repo}/builds/{n}", Handler: s.build},
90 Route{Method: "GET", Pattern: "/{owner}/{repo}/releases/download/{tag}/{name}", Handler: s.releaseAsset},
91 Route{Method: "GET", Pattern: "/{owner}/{repo}/raw/{ref}/{path...}", Handler: s.raw},
92 Route{Method: "GET", Pattern: "/{owner}/{repo}/log", Handler: s.log},
93 Route{Method: "GET", Pattern: "/{owner}/{repo}/log/{ref}", Handler: s.log},
94 Route{Method: "GET", Pattern: "/{owner}/{repo}/commit/{sha}", Handler: s.commit},
95 Route{Method: "GET", Pattern: "/{owner}/{repo}/compare", Handler: s.compare},
96 Route{Method: "GET", Pattern: "/{owner}/{repo}/compare/{range}", Handler: s.compare},
97 Route{Method: "GET", Pattern: "/{owner}/{repo}/refs", Handler: s.refs},
98 Route{Method: "GET", Pattern: "/{owner}/{repo}/archive/{file}", Handler: s.archive},
99 Route{Method: "GET", Pattern: "/{owner}/{repo}/issues", Handler: s.issues},
100 Route{Method: "GET", Pattern: "/{owner}/{repo}/issues/{n}", Handler: s.issue},
101 Route{Method: "GET", Pattern: "/{owner}/{repo}/mrs", Handler: s.mrs},
102 Route{Method: "GET", Pattern: "/{owner}/{repo}/mrs/{n}", Handler: s.mr},
103 )
104
105 // The JSON API is its own opt-in surface, independent of web.mode.
106 if s.cfg.API.Enabled {
107 routes = append(routes,
108 Route{Method: "POST", Pattern: "/api/v1/cmd", Mutating: true, Handler: s.apiCmd},
109 Route{Method: "GET", Pattern: "/api/v1/read", Handler: s.apiRead},
110 )
111 }
112
113 // Account-mode routes exist only when web.mode = "accounts". In
114 // view_only they are never registered — the structural guarantee.
115 if s.cfg.Web.Mode == "accounts" {
116 routes = append(routes,
117 Route{Method: "GET", Pattern: "/login", Handler: s.login, Mutating: true}, // consumes a one-time token
118 Route{Method: "POST", Pattern: "/login", Mutating: true,
119 Handler: s.checkOrigin(s.loginSubmit)},
120 Route{Method: "GET", Pattern: "/logout", Handler: s.requireUser(s.logoutForm)},
121 Route{Method: "POST", Pattern: "/logout", Mutating: true,
122 Handler: s.checkOrigin(s.logout)},
123 Route{Method: "GET", Pattern: "/new", Handler: s.requireUser(s.newRepoForm)},
124 Route{Method: "GET", Pattern: "/settings", Handler: s.requireUser(s.accountForm)},
125 Route{Method: "GET", Pattern: "/settings/export", Handler: s.requireUser(s.accountExport)},
126 Route{Method: "GET", Pattern: "/notifications", Handler: s.requireUser(s.notifications)},
127 Route{Method: "POST", Pattern: "/notifications", Mutating: true,
128 Handler: s.checkOrigin(s.requireUser(s.notificationsRead))},
129 Route{Method: "GET", Pattern: "/admin", Handler: s.requireUser(s.adminPage)},
130 Route{Method: "GET", Pattern: "/admin/users", Handler: s.requireUser(s.adminUsers)},
131 Route{Method: "POST", Pattern: "/admin/users", Mutating: true,
132 Handler: s.checkOrigin(s.requireUser(s.adminUsersSubmit))},
133 Route{Method: "POST", Pattern: "/{owner}", Mutating: true,
134 Handler: s.checkOrigin(s.requireUser(s.orgSubmit))},
135 Route{Method: "POST", Pattern: "/settings", Mutating: true,
136 Handler: s.checkOrigin(s.requireUser(s.accountSubmit))},
137 )
138 // Web signup fronts the same registration path as SSH register,
139 // so it exists only when registration is open or invite.
140 if s.cfg.Registration.Mode != "closed" {
141 routes = append(routes,
142 Route{Method: "GET", Pattern: "/register", Handler: s.signupForm},
143 Route{Method: "POST", Pattern: "/register", Mutating: true,
144 Handler: s.checkOrigin(s.signupSubmit)},
145 )
146 }
147 routes = append(routes,
148 Route{Method: "POST", Pattern: "/new", Mutating: true,
149 Handler: s.checkOrigin(s.requireUser(s.newSubmit))},
150 Route{Method: "POST", Pattern: "/{owner}/{repo}/pin", Mutating: true,
151 Handler: s.checkOrigin(s.requireUser(s.pinToggle))},
152 Route{Method: "POST", Pattern: "/{owner}/{repo}/watch", Mutating: true,
153 Handler: s.checkOrigin(s.requireUser(s.watchToggle))},
154 Route{Method: "GET", Pattern: "/{owner}/{repo}/issues/new",
155 Handler: s.requireUser(s.issueCreateForm)},
156 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/new", Mutating: true,
157 Handler: s.checkOrigin(s.requireUser(s.issueCreateSubmit))},
158 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/comment", Mutating: true,
159 Handler: s.checkOrigin(s.requireUser(s.issueCommentSubmit))},
160 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/edit", Mutating: true,
161 Handler: s.checkOrigin(s.requireUser(s.issueEditSubmit))},
162 // Triage: each runs the matching issue command.
163 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/state", Mutating: true,
164 Handler: s.checkOrigin(s.requireUser(s.issueStateSubmit))},
165 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/label", Mutating: true,
166 Handler: s.checkOrigin(s.requireUser(s.issueLabelSubmit))},
167 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/assign", Mutating: true,
168 Handler: s.checkOrigin(s.requireUser(s.issueAssignSubmit))},
169 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/milestone", Mutating: true,
170 Handler: s.checkOrigin(s.requireUser(s.issueMilestoneSubmit))},
171 Route{Method: "POST", Pattern: "/{owner}/{repo}/releases", Mutating: true,
172 Handler: s.checkOrigin(s.requireUser(s.releaseSubmit))},
173 Route{Method: "POST", Pattern: "/{owner}/{repo}/labels", Mutating: true,
174 Handler: s.checkOrigin(s.requireUser(s.labelSubmit))},
175 Route{Method: "GET", Pattern: "/bookmarks", Handler: s.requireUser(s.bookmarksPage)},
176 Route{Method: "GET", Pattern: "/{owner}/-/snippets/new", Handler: s.requireUser(s.snippetNewForm)},
177 Route{Method: "POST", Pattern: "/{owner}/-/snippets/new", Mutating: true,
178 Handler: s.checkOrigin(s.requireUser(s.snippetNewSubmit))},
179 Route{Method: "POST", Pattern: "/{owner}/-/snippets/{id}/edit", Mutating: true,
180 Handler: s.checkOrigin(s.requireUser(s.snippetEditSubmit))},
181 Route{Method: "POST", Pattern: "/{owner}/-/snippets/{id}/delete", Mutating: true,
182 Handler: s.checkOrigin(s.requireUser(s.snippetDeleteSubmit))},
183 Route{Method: "POST", Pattern: "/{owner}/-/snippets/{id}/file", Mutating: true,
184 Handler: s.checkOrigin(s.requireUser(s.snippetFileSubmit))},
185 Route{Method: "POST", Pattern: "/{owner}/-/snippets/{id}/file/remove", Mutating: true,
186 Handler: s.checkOrigin(s.requireUser(s.snippetFileRemoveSubmit))},
187 Route{Method: "POST", Pattern: "/{owner}/{repo}/bookmark", Mutating: true,
188 Handler: s.checkOrigin(s.requireUser(s.bookmarkToggle))},
189 Route{Method: "GET", Pattern: "/{owner}/{repo}/fork", Handler: s.requireUser(s.forkForm)},
190 Route{Method: "POST", Pattern: "/{owner}/{repo}/fork", Mutating: true,
191 Handler: s.checkOrigin(s.requireUser(s.forkSubmit))},
192 Route{Method: "POST", Pattern: "/{owner}/{repo}/builds", Mutating: true,
193 Handler: s.checkOrigin(s.requireUser(s.buildTriggerSubmit))},
194 Route{Method: "POST", Pattern: "/{owner}/{repo}/builds/{n}/cancel", Mutating: true,
195 Handler: s.checkOrigin(s.requireUser(s.buildCancelSubmit))},
196 Route{Method: "GET", Pattern: "/{owner}/{repo}/settings",
197 Handler: s.requireUser(s.settingsForm)},
198 Route{Method: "POST", Pattern: "/{owner}/{repo}/settings", Mutating: true,
199 Handler: s.checkOrigin(s.requireUser(s.settingsSubmit))},
200 Route{Method: "GET", Pattern: "/{owner}/{repo}/mrs/new",
201 Handler: s.requireUser(s.mrCreateForm)},
202 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/new", Mutating: true,
203 Handler: s.checkOrigin(s.requireUser(s.mrCreateSubmit))},
204 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/edit", Mutating: true,
205 Handler: s.checkOrigin(s.requireUser(s.mrEditSubmit))},
206 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/comment", Mutating: true,
207 Handler: s.checkOrigin(s.requireUser(s.mrCommentSubmit))},
208 // Review loop: each runs the matching mr command.
209 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/review", Mutating: true,
210 Handler: s.checkOrigin(s.requireUser(s.mrReviewSubmit))},
211 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/review-request", Mutating: true,
212 Handler: s.checkOrigin(s.requireUser(s.mrReviewRequestSubmit))},
213 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/label", Mutating: true,
214 Handler: s.checkOrigin(s.requireUser(s.mrLabelSubmit))},
215 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/merge", Mutating: true,
216 Handler: s.checkOrigin(s.requireUser(s.mrMergeSubmit))},
217 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/close", Mutating: true,
218 Handler: s.checkOrigin(s.requireUser(s.mrCloseSubmit))},
219 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/draft", Mutating: true,
220 Handler: s.checkOrigin(s.requireUser(s.mrDraftSubmit))},
221 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/retarget", Mutating: true,
222 Handler: s.checkOrigin(s.requireUser(s.mrRetargetSubmit))},
223 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/thread", Mutating: true,
224 Handler: s.checkOrigin(s.requireUser(s.mrThreadSubmit))},
225 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/diff-comment", Mutating: true,
226 Handler: s.checkOrigin(s.requireUser(s.mrDiffCommentSubmit))},
227 Route{Method: "GET", Pattern: "/{owner}/{repo}/edit/{ref}/{path...}",
228 Handler: s.requireUser(s.editForm)},
229 Route{Method: "POST", Pattern: "/{owner}/{repo}/edit/{ref}/{path...}", Mutating: true,
230 Handler: s.checkOrigin(s.requireUser(s.editSubmit))},
231 )
232 }
233 return routes
234}
235
236func (s *Server) Handler() http.Handler {
237 mux := http.NewServeMux()
238 for _, r := range s.Routes() {
239 mux.HandleFunc(r.Method+" "+r.Pattern, r.Handler)
240 }
241 // A path no pattern matches gets the 404 page, not net/http's
242 // plain-text body (#232), unless dropping a trailing slash makes it
243 // match (#233).
244 mux.HandleFunc("/", s.unmatched(mux))
245 var h http.Handler = mux
246 if len(s.cfg.GoImport) > 0 {
247 h = s.goImportHandler(mux)
248 }
249 // Always wrapped: custom pages domains work with or without the
250 // built-in [pages] domain.
251 return compressed(s.pagesRouter(s.securityHeaders(h)))
252}
253
254// unmatched answers a path no pattern matched. A GET whose path ends in
255// a slash and resolves without it redirects there, so /cmc/ reaches /cmc
256// and /cmc/-/snippets/ reaches /cmc/-/snippets (#233). Everything else is
257// the 404 page. Patterns ending in a {path...} wildcard already accept
258// the slash and never arrive here.
259func (s *Server) unmatched(mux *http.ServeMux) http.HandlerFunc {
260 return func(w http.ResponseWriter, r *http.Request) {
261 p := r.URL.Path
262 if len(p) > 1 && strings.HasSuffix(p, "/") && (r.Method == "GET" || r.Method == "HEAD") {
263 trimmed := r.Clone(r.Context())
264 u := *r.URL
265 u.Path = strings.TrimRight(p, "/")
266 trimmed.URL = &u
267 // The fallback itself is registered at "/", so a miss
268 // reports that pattern; a real route reports its own.
269 if _, pattern := mux.Handler(trimmed); pattern != "" && pattern != "/" {
270 // net/http fills Scheme and Host from an
271 // absolute-form request line, which RFC 7230
272 // requires a server to accept; carrying them
273 // into Location sends the reader off-site.
274 u.Scheme, u.Host, u.User = "", "", nil
275 http.Redirect(w, r, u.String(), http.StatusMovedPermanently)
276 return
277 }
278 }
279 s.notFound(w, r)
280 }
281}
282
283// securityHeaders sets defensive response headers on every reply. The CSP
284// is strict where it can be: no scripts at all (the UI needs none), no
285// plugins, no embedding. Inline styles are allowed because label chips
286// carry their color inline (chroma is class-based so the syntax palette
287// can follow the color scheme). Images may load from anywhere so external README images
288// still render; they are the one thing a reader-facing forge can't police
289// without a proxy.
290func (s *Server) securityHeaders(next http.Handler) http.Handler {
291 const csp = "default-src 'self'; script-src 'none'; style-src 'self' 'unsafe-inline'; " +
292 "img-src * data:; object-src 'none'; base-uri 'none'; form-action 'self'; frame-ancestors 'none'"
293 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
294 hd := w.Header()
295 hd.Set("Content-Security-Policy", csp)
296 hd.Set("X-Frame-Options", "DENY")
297 hd.Set("X-Content-Type-Options", "nosniff")
298 hd.Set("Referrer-Policy", "no-referrer")
299 hd.Set("Cross-Origin-Opener-Policy", "same-origin")
300 if s.cfg.HTTP.TLS != "off" {
301 hd.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains")
302 }
303 next.ServeHTTP(w, r)
304 })
305}
306
307func (s *Server) goImportHandler(mux http.Handler) http.Handler {
308 // Vanity Go modules: ?go-get=1 requests under a configured module
309 // path answer with the go-import meta tag before normal routing.
310 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
311 if r.URL.Query().Get("go-get") == "1" {
312 host := r.Host
313 if h, _, err := net.SplitHostPort(host); err == nil {
314 host = h
315 }
316 requested := host + strings.TrimSuffix(r.URL.Path, "/")
317 for module, repo := range s.cfg.GoImport {
318 if requested == module || strings.HasPrefix(requested, module+"/") {
319 w.Header().Set("Content-Type", "text/html; charset=utf-8")
320 fmt.Fprintf(w, `<!DOCTYPE html><html><head><meta name="go-import" content="%s git %s/%s.git"></head><body>%s</body></html>`,
321 module, s.cfg.Server.SiteURL, repo, module)
322 return
323 }
324 }
325 }
326 mux.ServeHTTP(w, r)
327 })
328}