internal/httpd/routes.go
236 lines · 12362 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: "/healthz", Handler: s.healthz},
45 Route{Method: "GET", Pattern: "/privacy", Handler: s.privacy},
46 Route{Method: "GET", Pattern: "/static/style.css", Handler: s.stylesheet},
47 )
48 // One literal route per embedded font file: a {name} wildcard is
49 // ambiguous against /{owner}/{repo}/... patterns in ServeMux precedence,
50 // and hand-typed names drifted from the files once (#102).
51 fonts, _ := fs.ReadDir(web.FontFS, "static/fonts")
52 for _, f := range fonts {
53 routes = append(routes, Route{Method: "GET", Pattern: "/static/fonts/" + f.Name(), Handler: s.font})
54 }
55 routes = append(routes,
56 Route{Method: "GET", Pattern: "/favicon.svg", Handler: s.favicon},
57 Route{Method: "GET", Pattern: "/{owner}", Handler: s.ownerPage},
58 Route{Method: "GET", Pattern: "/{owner}/{repo}", Handler: s.repoHome},
59 Route{Method: "GET", Pattern: "/{owner}/{repo}/tree/{ref}/{path...}", Handler: s.tree},
60 Route{Method: "GET", Pattern: "/{owner}/{repo}/blob/{ref}/{path...}", Handler: s.blob},
61 Route{Method: "GET", Pattern: "/{owner}/{repo}/blame/{ref}/{path...}", Handler: s.blame},
62 Route{Method: "GET", Pattern: "/{owner}/{repo}/search", Handler: s.search},
63 Route{Method: "GET", Pattern: "/{owner}/{repo}/milestones", Handler: s.milestones},
64 Route{Method: "GET", Pattern: "/{owner}/{repo}/wiki", Handler: s.wiki},
65 Route{Method: "GET", Pattern: "/{owner}/{repo}/wiki/_raw/{path...}", Handler: s.wikiRaw},
66 Route{Method: "GET", Pattern: "/{owner}/{repo}/wiki/{page}", Handler: s.wiki},
67 Route{Method: "GET", Pattern: "/{owner}/{repo}/releases", Handler: s.releases},
68 Route{Method: "GET", Pattern: "/{owner}/{repo}/builds", Handler: s.builds},
69 Route{Method: "GET", Pattern: "/{owner}/{repo}/badge/build.svg", Handler: s.buildBadge},
70 Route{Method: "GET", Pattern: "/{owner}/{repo}/badge/build.png", Handler: s.buildBadgePNG},
71 Route{Method: "GET", Pattern: "/{owner}/{repo}/builds/{n}", Handler: s.build},
72 Route{Method: "GET", Pattern: "/{owner}/{repo}/releases/download/{tag}/{name}", Handler: s.releaseAsset},
73 Route{Method: "GET", Pattern: "/{owner}/{repo}/raw/{ref}/{path...}", Handler: s.raw},
74 Route{Method: "GET", Pattern: "/{owner}/{repo}/log", Handler: s.log},
75 Route{Method: "GET", Pattern: "/{owner}/{repo}/log/{ref}", Handler: s.log},
76 Route{Method: "GET", Pattern: "/{owner}/{repo}/commit/{sha}", Handler: s.commit},
77 Route{Method: "GET", Pattern: "/{owner}/{repo}/refs", Handler: s.refs},
78 Route{Method: "GET", Pattern: "/{owner}/{repo}/archive/{file}", Handler: s.archive},
79 Route{Method: "GET", Pattern: "/{owner}/{repo}/issues", Handler: s.issues},
80 Route{Method: "GET", Pattern: "/{owner}/{repo}/issues/{n}", Handler: s.issue},
81 Route{Method: "GET", Pattern: "/{owner}/{repo}/mrs", Handler: s.mrs},
82 Route{Method: "GET", Pattern: "/{owner}/{repo}/mrs/{n}", Handler: s.mr},
83 )
84
85 // The JSON API is its own opt-in surface, independent of web.mode.
86 if s.cfg.API.Enabled {
87 routes = append(routes,
88 Route{Method: "POST", Pattern: "/api/v1/cmd", Mutating: true, Handler: s.apiCmd},
89 Route{Method: "GET", Pattern: "/api/v1/read", Handler: s.apiRead},
90 )
91 }
92
93 // Account-mode routes exist only when web.mode = "accounts". In
94 // view_only they are never registered — the structural guarantee.
95 if s.cfg.Web.Mode == "accounts" {
96 routes = append(routes,
97 Route{Method: "GET", Pattern: "/login", Handler: s.login, Mutating: true}, // consumes a one-time token
98 Route{Method: "POST", Pattern: "/logout", Mutating: true,
99 Handler: s.checkOrigin(s.logout)},
100 Route{Method: "GET", Pattern: "/new", Handler: s.requireUser(s.newRepoForm)},
101 Route{Method: "GET", Pattern: "/settings", Handler: s.requireUser(s.accountForm)},
102 Route{Method: "GET", Pattern: "/admin", Handler: s.requireUser(s.adminPage)},
103 Route{Method: "POST", Pattern: "/{owner}", Mutating: true,
104 Handler: s.checkOrigin(s.requireUser(s.orgSubmit))},
105 Route{Method: "POST", Pattern: "/settings", Mutating: true,
106 Handler: s.checkOrigin(s.requireUser(s.accountSubmit))},
107 )
108 // Web signup fronts the same registration path as SSH register,
109 // so it exists only when registration is open or invite.
110 if s.cfg.Registration.Mode != "closed" {
111 routes = append(routes,
112 Route{Method: "GET", Pattern: "/register", Handler: s.signupForm},
113 Route{Method: "POST", Pattern: "/register", Mutating: true,
114 Handler: s.checkOrigin(s.signupSubmit)},
115 )
116 }
117 routes = append(routes,
118 Route{Method: "POST", Pattern: "/new", Mutating: true,
119 Handler: s.checkOrigin(s.requireUser(s.newRepoSubmit))},
120 Route{Method: "POST", Pattern: "/{owner}/{repo}/pin", Mutating: true,
121 Handler: s.checkOrigin(s.requireUser(s.pinToggle))},
122 Route{Method: "GET", Pattern: "/{owner}/{repo}/issues/new",
123 Handler: s.requireUser(s.issueCreateForm)},
124 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/new", Mutating: true,
125 Handler: s.checkOrigin(s.requireUser(s.issueCreateSubmit))},
126 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/comment", Mutating: true,
127 Handler: s.checkOrigin(s.requireUser(s.issueCommentSubmit))},
128 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/edit", Mutating: true,
129 Handler: s.checkOrigin(s.requireUser(s.issueEditSubmit))},
130 // Triage: each runs the matching issue command.
131 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/state", Mutating: true,
132 Handler: s.checkOrigin(s.requireUser(s.issueStateSubmit))},
133 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/label", Mutating: true,
134 Handler: s.checkOrigin(s.requireUser(s.issueLabelSubmit))},
135 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/assign", Mutating: true,
136 Handler: s.checkOrigin(s.requireUser(s.issueAssignSubmit))},
137 Route{Method: "POST", Pattern: "/{owner}/{repo}/issues/{n}/milestone", Mutating: true,
138 Handler: s.checkOrigin(s.requireUser(s.issueMilestoneSubmit))},
139 Route{Method: "POST", Pattern: "/{owner}/{repo}/releases", Mutating: true,
140 Handler: s.checkOrigin(s.requireUser(s.releaseSubmit))},
141 Route{Method: "POST", Pattern: "/{owner}/{repo}/builds", Mutating: true,
142 Handler: s.checkOrigin(s.requireUser(s.buildTriggerSubmit))},
143 Route{Method: "GET", Pattern: "/{owner}/{repo}/settings",
144 Handler: s.requireUser(s.settingsForm)},
145 Route{Method: "POST", Pattern: "/{owner}/{repo}/settings", Mutating: true,
146 Handler: s.checkOrigin(s.requireUser(s.settingsSubmit))},
147 Route{Method: "GET", Pattern: "/{owner}/{repo}/mrs/new",
148 Handler: s.requireUser(s.mrCreateForm)},
149 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/new", Mutating: true,
150 Handler: s.checkOrigin(s.requireUser(s.mrCreateSubmit))},
151 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/edit", Mutating: true,
152 Handler: s.checkOrigin(s.requireUser(s.mrEditSubmit))},
153 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/comment", Mutating: true,
154 Handler: s.checkOrigin(s.requireUser(s.mrCommentSubmit))},
155 // Review loop: each runs the matching mr command.
156 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/review", Mutating: true,
157 Handler: s.checkOrigin(s.requireUser(s.mrReviewSubmit))},
158 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/merge", Mutating: true,
159 Handler: s.checkOrigin(s.requireUser(s.mrMergeSubmit))},
160 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/close", Mutating: true,
161 Handler: s.checkOrigin(s.requireUser(s.mrCloseSubmit))},
162 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/retarget", Mutating: true,
163 Handler: s.checkOrigin(s.requireUser(s.mrRetargetSubmit))},
164 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/thread", Mutating: true,
165 Handler: s.checkOrigin(s.requireUser(s.mrThreadSubmit))},
166 Route{Method: "POST", Pattern: "/{owner}/{repo}/mrs/{n}/diff-comment", Mutating: true,
167 Handler: s.checkOrigin(s.requireUser(s.mrDiffCommentSubmit))},
168 Route{Method: "GET", Pattern: "/{owner}/{repo}/edit/{ref}/{path...}",
169 Handler: s.requireUser(s.editForm)},
170 Route{Method: "POST", Pattern: "/{owner}/{repo}/edit/{ref}/{path...}", Mutating: true,
171 Handler: s.checkOrigin(s.requireUser(s.editSubmit))},
172 )
173 }
174 return routes
175}
176
177func (s *Server) Handler() http.Handler {
178 mux := http.NewServeMux()
179 for _, r := range s.Routes() {
180 mux.HandleFunc(r.Method+" "+r.Pattern, r.Handler)
181 }
182 var h http.Handler = mux
183 if len(s.cfg.GoImport) > 0 {
184 h = s.goImportHandler(mux)
185 }
186 // Always wrapped: custom pages domains work with or without the
187 // built-in [pages] domain.
188 return s.pagesRouter(s.securityHeaders(h))
189}
190
191// securityHeaders sets defensive response headers on every reply. The CSP
192// is strict where it can be: no scripts at all (the UI needs none), no
193// plugins, no embedding. Inline styles are allowed because label chips
194// carry their color inline (chroma is class-based so the syntax palette
195// can follow the color scheme). Images may load from anywhere so external README images
196// still render; they are the one thing a reader-facing forge can't police
197// without a proxy.
198func (s *Server) securityHeaders(next http.Handler) http.Handler {
199 const csp = "default-src 'self'; script-src 'none'; style-src 'self' 'unsafe-inline'; " +
200 "img-src * data:; object-src 'none'; base-uri 'none'; form-action 'self'; frame-ancestors 'none'"
201 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
202 hd := w.Header()
203 hd.Set("Content-Security-Policy", csp)
204 hd.Set("X-Frame-Options", "DENY")
205 hd.Set("X-Content-Type-Options", "nosniff")
206 hd.Set("Referrer-Policy", "no-referrer")
207 hd.Set("Cross-Origin-Opener-Policy", "same-origin")
208 if s.cfg.HTTP.TLS != "off" {
209 hd.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains")
210 }
211 next.ServeHTTP(w, r)
212 })
213}
214
215func (s *Server) goImportHandler(mux http.Handler) http.Handler {
216 // Vanity Go modules: ?go-get=1 requests under a configured module
217 // path answer with the go-import meta tag before normal routing.
218 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
219 if r.URL.Query().Get("go-get") == "1" {
220 host := r.Host
221 if h, _, err := net.SplitHostPort(host); err == nil {
222 host = h
223 }
224 requested := host + strings.TrimSuffix(r.URL.Path, "/")
225 for module, repo := range s.cfg.GoImport {
226 if requested == module || strings.HasPrefix(requested, module+"/") {
227 w.Header().Set("Content-Type", "text/html; charset=utf-8")
228 fmt.Fprintf(w, `<!DOCTYPE html><html><head><meta name="go-import" content="%s git %s/%s.git"></head><body>%s</body></html>`,
229 module, s.cfg.Server.SiteURL, repo, module)
230 return
231 }
232 }
233 }
234 mux.ServeHTTP(w, r)
235 })
236}