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