Rene Nochebuena
34c5fa7ded
Rename package from httpauth to httpauthfirebase to follow ecosystem convention (repo name = package name, hyphens removed). Bump httpauth dependency from v0.1.0 to v1.0.0 and rbac indirect dependency from v0.9.0 to v1.0.0. BREAKING CHANGE: import path unchanged (code.nochebuena.dev/go/httpauth-firebase) but package identifier changes from httpauth to httpauthfirebase — remove any import alias previously used to disambiguate from code.nochebuena.dev/go/httpauth.
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
package httpauthfirebase
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import (
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"context"
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"net/http"
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"path"
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"strings"
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"firebase.google.com/go/v4/auth"
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httpauthmw "code.nochebuena.dev/go/httpauth"
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)
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// TokenVerifier abstracts Firebase JWT verification.
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// *auth.Client satisfies this interface directly — no adapter needed in production.
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// Retained solely for unit-test mockability.
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type TokenVerifier interface {
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VerifyIDTokenAndCheckRevoked(ctx context.Context, idToken string) (*auth.Token, error)
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}
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// AuthMiddleware verifies the Bearer token and injects uid + claims into the
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// request context via httpauth.SetTokenData. Requests to publicPaths are skipped
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// without token verification (wildcards supported via path.Match).
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// Returns 401 on missing or invalid tokens.
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func AuthMiddleware(verifier TokenVerifier, publicPaths []string) func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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for _, pattern := range publicPaths {
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if matched, _ := path.Match(pattern, r.URL.Path); matched {
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next.ServeHTTP(w, r)
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return
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}
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}
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authHeader := r.Header.Get("Authorization")
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if !strings.HasPrefix(authHeader, "Bearer ") {
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http.Error(w, "unauthorized", http.StatusUnauthorized)
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return
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}
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token := strings.TrimPrefix(authHeader, "Bearer ")
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decoded, err := verifier.VerifyIDTokenAndCheckRevoked(r.Context(), token)
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if err != nil {
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http.Error(w, "unauthorized", http.StatusUnauthorized)
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return
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}
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ctx := httpauthmw.SetTokenData(r.Context(), decoded.UID, decoded.Claims)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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}
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