Add role management

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/server/authz/authz.go

@@ -0,0 +1,121 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package authz
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"go.gearno.de/kit/httpserver"
+	"go.gearno.de/kit/log"
+	authsvc "go.probo.inc/probo/pkg/auth"
+	"go.probo.inc/probo/pkg/authz"
+	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/server/session"
+)
+
+type Config struct {
+	Auth         *authsvc.Service
+	Authz        *authz.Service
+	Logger       *log.Logger
+	CookieName   string
+	CookieSecret string
+	CookieSecure bool
+}
+
+type Server struct {
+	router *chi.Mux
+}
+
+type ctxKey struct{ name string }
+
+var (
+	userContextKey = &ctxKey{name: "user"}
+)
+
+func NewServer(cfg Config) (*Server, error) {
+	router := chi.NewRouter()
+
+	// Apply authentication middleware to all routes
+	router.Use(requireAuth(cfg.Auth, cfg.Authz, cfg.CookieName, cfg.CookieSecret, cfg.CookieSecure))
+
+	router.Get("/{organizationID}/permissions", PermissionsHandler(cfg.Authz, UserFromContext, cfg.Logger))
+
+	return &Server{
+		router: router,
+	}, nil
+}
+
+func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	s.router.ServeHTTP(w, r)
+}
+
+// requireAuth is a middleware that requires authentication
+func requireAuth(
+	authService *authsvc.Service,
+	authzService *authz.Service,
+	cookieName string,
+	cookieSecret string,
+	cookieSecure bool,
+) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := r.Context()
+
+			sessionAuthCfg := session.AuthConfig{
+				CookieName:   cookieName,
+				CookieSecret: cookieSecret,
+				CookieSecure: cookieSecure,
+			}
+
+			errorHandler := session.ErrorHandler{
+				OnCookieError: func(err error) {
+					httpserver.RenderError(w, http.StatusUnauthorized, fmt.Errorf("invalid session"))
+				},
+				OnParseError: func(w http.ResponseWriter, authCfg session.AuthConfig) {
+					session.ClearCookie(w, authCfg)
+					httpserver.RenderError(w, http.StatusUnauthorized, fmt.Errorf("invalid session"))
+				},
+				OnSessionError: func(w http.ResponseWriter, authCfg session.AuthConfig) {
+					session.ClearCookie(w, authCfg)
+					httpserver.RenderError(w, http.StatusUnauthorized, fmt.Errorf("session expired"))
+				},
+				OnUserError: func(w http.ResponseWriter, authCfg session.AuthConfig) {
+					session.ClearCookie(w, authCfg)
+					httpserver.RenderError(w, http.StatusUnauthorized, fmt.Errorf("user not found"))
+				},
+				OnTenantError: func(err error) {
+					panic(fmt.Errorf("cannot list tenants for user: %w", err))
+				},
+			}
+
+			authResult := session.TryAuth(ctx, w, r, authService, authzService, sessionAuthCfg, errorHandler)
+			if authResult == nil {
+				httpserver.RenderError(w, http.StatusUnauthorized, fmt.Errorf("authentication required"))
+				return
+			}
+
+			ctx = context.WithValue(ctx, userContextKey, authResult.User)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func UserFromContext(ctx context.Context) *coredata.User {
+	user, _ := ctx.Value(userContextKey).(*coredata.User)
+	return user
+}

pkg/server/authz/permissions_handler.go

@@ -0,0 +1,76 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package authz
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"go.gearno.de/kit/httpserver"
+	"go.gearno.de/kit/log"
+	"go.probo.inc/probo/pkg/authz"
+	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/gid"
+)
+
+// PermissionsHandler returns permissions for the current user's role in an organization
+// It uses the centralized permissions map
+func PermissionsHandler(
+	authzService *authz.Service,
+	userFromContext func(ctx context.Context) *coredata.User,
+	logger *log.Logger,
+) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		ctx := r.Context()
+
+		orgIDStr := chi.URLParam(r, "organizationID")
+		if orgIDStr == "" {
+			http.Error(w, "organizationID parameter required", http.StatusBadRequest)
+			return
+		}
+
+		orgID, err := gid.ParseGID(orgIDStr)
+		if err != nil {
+			http.Error(w, "invalid organizationID", http.StatusBadRequest)
+			return
+		}
+
+		user := userFromContext(ctx)
+		if user == nil {
+			http.Error(w, "Unauthorized", http.StatusUnauthorized)
+			return
+		}
+
+		tenantAuthzSvc := authzService.WithTenant(orgID.TenantID())
+
+		memberRole, err := tenantAuthzSvc.GetUserRoleInOrganization(ctx, user.ID, orgID)
+		if err != nil {
+			http.Error(w, fmt.Sprintf("cannot get user role: %v", err), http.StatusInternalServerError)
+			return
+		}
+		userRole := authz.Role(memberRole.String())
+
+		permissions := authz.GetPermissionsByRole(userRole)
+
+		response := map[string]any{
+			"permissions": permissions,
+			"role":        memberRole.String(),
+		}
+
+		httpserver.RenderJSON(w, http.StatusOK, response)
+	}
+}