Initial commit. Working login, example UI with prototype and demo, connections to DB and DAV, local and prod setups.

backend/mw/auth.go

@@ -0,0 +1,91 @@
+package mw
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"crussell/auth"
+)
+
+type contextKey string
+
+const (
+	UserIDKey   contextKey = "user_id"
+	UserRoleKey contextKey = "user_role"
+)
+
+// RequireAuth middleware - validates JWT and adds user info to context
+func RequireAuth(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		authHeader := r.Header.Get("Authorization")
+		if authHeader == "" || !strings.HasPrefix(authHeader, "Bearer ") {
+			http.Error(w, "missing or invalid authorization header", http.StatusUnauthorized)
+			return
+		}
+
+		tokenString := strings.TrimPrefix(authHeader, "Bearer ")
+
+		userID, role, err := auth.VerifyToken(tokenString, r.Context())
+		if err != nil {
+			http.Error(w, "invalid token", http.StatusUnauthorized)
+			return
+		}
+
+		// Add user info to context
+		ctx := context.WithValue(r.Context(), UserIDKey, userID)
+		ctx = context.WithValue(ctx, UserRoleKey, role)
+
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+// RequireRole middleware - checks if user has required role(s)
+func RequireRole(allowedRoles ...string) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			role, ok := r.Context().Value(UserRoleKey).(string)
+			if !ok {
+				http.Error(w, "unauthorized", http.StatusUnauthorized)
+				return
+			}
+
+			// Check if user has one of the allowed roles
+			hasRole := false
+			for _, allowedRole := range allowedRoles {
+				if role == allowedRole {
+					hasRole = true
+					break
+				}
+			}
+
+			if !hasRole {
+				http.Error(w, "forbidden", http.StatusForbidden)
+				return
+			}
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
+// RequireVerified middleware - only allows verified_email and admin
+func RequireVerified(next http.Handler) http.Handler {
+	return RequireRole("verified_email", "admin")(next)
+}
+
+// RequireAdmin middleware - only allows admin
+func RequireAdmin(next http.Handler) http.Handler {
+	return RequireRole("admin")(next)
+}
+
+// Helper functions to get user info from context
+func GetUserID(ctx context.Context) (string, bool) {
+	userID, ok := ctx.Value(UserIDKey).(string)
+	return userID, ok
+}
+
+func GetUserRole(ctx context.Context) (string, bool) {
+	role, ok := ctx.Value(UserRoleKey).(string)
+	return role, ok
+}