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a96eba8083
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Adds CSRF protection to the two cookie-authenticated form posts, POST / (login) and POST /generate, using github.com/gorilla/csrf, the recorded default for this job. The token key is derived from signing_key with its own HKDF salt, so it needs no new config and survives restarts. The token cookie is separate from the session cookie, which also covers login CSRF, where no session exists yet. Both templates carry the hidden token field. What a reader would trip over: outside debug mode the library enforces its https Referer origin check, so the TLS-terminating proxy must preserve the Host and Referer headers from the browser or form posts are rejected. Disclosure: one nolint:gosec on a test constant holding the library field name (G101 false positive). Model: opus-4-8 (implementation, review); fable-5-1 (landing message)
77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
package server
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import (
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"net/http"
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sentryhttp "github.com/getsentry/sentry-go/http"
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"github.com/go-chi/chi/v5"
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"github.com/go-chi/chi/v5/middleware"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"sneak.berlin/go/pixa/internal/static"
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)
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// SetupRoutes configures all HTTP routes.
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func (s *Server) SetupRoutes() {
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s.router = chi.NewRouter()
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s.router.Use(middleware.Recoverer)
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s.router.Use(middleware.RequestID)
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s.router.Use(s.mw.SecurityHeaders())
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s.router.Use(s.mw.Logging())
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// Add metrics middleware only if credentials are configured
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if s.config.MetricsUsername != "" {
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s.router.Use(s.mw.Metrics())
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}
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s.router.Use(s.mw.CORS())
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s.router.Use(middleware.Timeout(HTTPWriteTimeout))
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if s.sentryEnabled {
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sentryHandler := sentryhttp.New(sentryhttp.Options{
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Repanic: true,
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})
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s.router.Use(sentryHandler.Handle)
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}
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// Health check endpoint
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s.router.Get("/.well-known/healthcheck.json", s.h.HandleHealthCheck())
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// Robots.txt
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s.router.Get("/robots.txt", s.h.HandleRobotsTxt())
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// Static files (Tailwind CSS, etc.)
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s.router.Handle("/static/*", http.StripPrefix("/static/", static.Handler()))
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// Login/generator UI. The form routes carry CSRF protection; the
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// token cookie is independent of the session cookie, so it also
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// covers the login POST, where no session exists yet.
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s.router.Group(func(r chi.Router) {
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r.Use(s.h.CSRF())
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r.Get("/", s.h.HandleRoot())
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r.Post("/", s.h.HandleRoot())
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r.Post("/generate", s.h.HandleGenerateURL())
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})
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s.router.Get("/logout", s.h.HandleLogout())
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// Main image proxy route
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// /v1/image/<host>/<path>/<width>x<height>.<format>
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s.router.Get("/v1/image/*", s.h.HandleImage())
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s.router.Head("/v1/image/*", s.h.HandleImage())
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// Encrypted image URL route
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// The trailing filename (e.g., /img.jpg) is ignored but helps
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// browsers with content type
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s.router.Get("/v1/e/{token}/*", s.h.HandleImageEnc())
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// Metrics endpoint with auth
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if s.config.MetricsUsername != "" {
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s.router.Group(func(r chi.Router) {
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r.Use(s.mw.MetricsAuth())
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r.Get("/metrics", http.HandlerFunc(promhttp.Handler().ServeHTTP))
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})
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}
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}
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