11770b4058
Implement a full OAuth2 2.0 and OpenID Connect 1.0 authorization server with support for authorization code flow (with PKCE), refresh token rotation, device authorization grant, dynamic client registration, token introspection, and token revocation. Includes database schema, coredata layer, service logic, HTTP handlers, OIDC discovery endpoint, and JWKS publishing. Signed-off-by: Bryan Frimin <bryan@getprobo.com>
272 lines
8.2 KiB
Go
272 lines
8.2 KiB
Go
// Copyright (c) 2025-2026 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 api
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"time"
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"github.com/go-chi/chi/v5"
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"github.com/go-chi/cors"
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"go.gearno.de/kit/httpserver"
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"go.gearno.de/kit/log"
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"go.probo.inc/probo/pkg/accessreview"
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"go.probo.inc/probo/pkg/baseurl"
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"go.probo.inc/probo/pkg/connector"
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"go.probo.inc/probo/pkg/cookiebanner"
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"go.probo.inc/probo/pkg/esign"
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"go.probo.inc/probo/pkg/file"
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"go.probo.inc/probo/pkg/iam"
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"go.probo.inc/probo/pkg/mailman"
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"go.probo.inc/probo/pkg/probo"
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"go.probo.inc/probo/pkg/securecookie"
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connect_v1 "go.probo.inc/probo/pkg/server/api/connect/v1"
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console_v1 "go.probo.inc/probo/pkg/server/api/console/v1"
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cookiebanner_v1 "go.probo.inc/probo/pkg/server/api/cookiebanner/v1"
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files_v1 "go.probo.inc/probo/pkg/server/api/files/v1"
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mcp_v1 "go.probo.inc/probo/pkg/server/api/mcp/v1"
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slack_v1 "go.probo.inc/probo/pkg/server/api/slack/v1"
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trust_v1 "go.probo.inc/probo/pkg/server/api/trust/v1"
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"go.probo.inc/probo/pkg/slack"
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"go.probo.inc/probo/pkg/trust"
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)
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type (
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Config struct {
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BaseURL *baseurl.BaseURL
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AllowedOrigins []string
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Probo *probo.Service
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File *file.Service
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IAM *iam.Service
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Trust *trust.Service
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ESign *esign.Service
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AccessReview *accessreview.Service
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Slack *slack.Service
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Mailman *mailman.Service
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CookieBanner *cookiebanner.Service
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Cookie securecookie.Config
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TokenSecret string
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ConnectorRegistry *connector.ConnectorRegistry
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CustomDomainCname string
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Logger *log.Logger
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}
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MCPConfig struct {
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Version string
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RequestTimeout time.Duration
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MaxRequestSize int64
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}
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Server struct {
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cfg Config
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csrf *http.CrossOriginProtection
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compliancePageHandler http.Handler
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consoleHandler http.Handler
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cookieBannerHandler http.Handler
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filesHandler http.Handler
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mcpHandler http.Handler
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slackHandler http.Handler
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connectHandler http.Handler
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}
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)
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var (
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ErrMissingProboService = errors.New("server configuration requires a valid probo.Service instance")
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ErrMissingIAMService = errors.New("server configuration requires a valid iam.Service instance")
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ErrMissingSlackService = errors.New("server configuration requires a valid slack.Service instance")
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)
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func methodNotAllowed(w http.ResponseWriter, r *http.Request) {
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defer func() { _ = r.Body.Close() }()
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httpserver.RenderJSON(
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w,
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http.StatusMethodNotAllowed,
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map[string]string{
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"error": "method not allowed",
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},
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)
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}
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func notFound(w http.ResponseWriter, r *http.Request) {
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defer func() { _ = r.Body.Close() }()
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httpserver.RenderJSON(
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w,
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http.StatusNotFound,
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map[string]string{
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"error": "not found",
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},
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)
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}
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func NewServer(cfg Config) (*Server, error) {
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if cfg.Probo == nil {
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return nil, ErrMissingProboService
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}
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if cfg.IAM == nil {
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return nil, ErrMissingIAMService
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}
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if cfg.Slack == nil {
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return nil, ErrMissingSlackService
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}
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csrf := http.NewCrossOriginProtection()
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for _, origin := range cfg.AllowedOrigins {
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if err := csrf.AddTrustedOrigin(origin); err != nil {
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return nil, fmt.Errorf("cannot add trusted origin %q: %w", origin, err)
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}
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}
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// The SAML Assertion Consumer Service endpoint receives cross-origin
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// POSTs from external identity providers by design.
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csrf.AddInsecureBypassPattern("POST /connect/v1/saml/2.0/consume")
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// The cookie banner API is called cross-origin from customer websites
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// by the JS SDK. CORS is handled by the cookie banner middleware.
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csrf.AddInsecureBypassPattern("GET /cookie-banner/v1/*")
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csrf.AddInsecureBypassPattern("POST /cookie-banner/v1/*")
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csrf.AddInsecureBypassPattern("OPTIONS /cookie-banner/v1/*")
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// OAuth2 token, introspection, revocation, and device authorization
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// endpoints receive cross-origin POSTs from external clients.
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csrf.AddInsecureBypassPattern("POST /connect/v1/oauth2/token")
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csrf.AddInsecureBypassPattern("POST /connect/v1/oauth2/introspect")
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csrf.AddInsecureBypassPattern("POST /connect/v1/oauth2/revoke")
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csrf.AddInsecureBypassPattern("POST /connect/v1/oauth2/device")
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csrf.SetDenyHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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httpserver.RenderJSON(
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w,
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http.StatusForbidden,
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map[string]string{
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"error": "cross-origin request denied",
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},
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)
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}))
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return &Server{
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cfg: cfg,
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csrf: csrf,
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compliancePageHandler: trust_v1.NewMux(
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cfg.Logger.Named("trust.v1"),
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cfg.IAM,
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cfg.Trust,
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cfg.ESign,
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cfg.Mailman,
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cfg.Cookie,
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cfg.TokenSecret,
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cfg.BaseURL,
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),
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consoleHandler: console_v1.NewMux(
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cfg.Logger.Named("console.v1"),
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cfg.Probo,
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cfg.IAM,
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cfg.ESign,
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cfg.AccessReview,
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cfg.Mailman,
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cfg.Cookie,
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cfg.TokenSecret,
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cfg.ConnectorRegistry,
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cfg.BaseURL,
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cfg.CustomDomainCname,
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),
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cookieBannerHandler: cookiebanner_v1.NewMux(
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cfg.Logger.Named("cookiebanner.v1"),
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cfg.CookieBanner,
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),
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filesHandler: files_v1.NewMux(
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cfg.Logger.Named("files.v1"),
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cfg.File,
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),
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mcpHandler: mcp_v1.NewMux(
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cfg.Logger.Named("mcp.v1"),
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cfg.Probo,
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cfg.IAM,
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cfg.AccessReview,
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cfg.TokenSecret,
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),
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slackHandler: slack_v1.NewMux(
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cfg.Logger.Named("slack.v1"),
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cfg.Slack,
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cfg.Trust,
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),
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connectHandler: connect_v1.NewMux(
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cfg.Logger.Named("connect.v1"),
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cfg.IAM,
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cfg.Cookie,
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cfg.TokenSecret,
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cfg.BaseURL,
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func(ctx context.Context, host string) bool {
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if host == cfg.BaseURL.Host() {
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return true
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}
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_, err := cfg.Trust.GetByDomainName(ctx, host)
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return err == nil
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},
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func(ctx context.Context, host string) bool {
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_, err := cfg.Trust.GetByDomainName(ctx, host)
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return err == nil
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},
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),
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}, nil
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}
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func (s *Server) CompliancePageHandler() http.Handler {
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return s.compliancePageHandler
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}
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func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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corsOpts := cors.Options{
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AllowedOrigins: s.cfg.AllowedOrigins,
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AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "HEAD"},
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AllowedHeaders: []string{"content-type", "traceparent", "authorization"},
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ExposedHeaders: []string{"x-request-id"},
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AllowCredentials: true,
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MaxAge: 600, // 10 minutes (chrome >= 76 maximum value c.f. https://source.chromium.org/chromium/chromium/src/+/main:services/network/public/cpp/cors/preflight_result.cc;drc=52002151773d8cd9ffc5f557cd7cc880fddcae3e;l=36)
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OptionsPassthrough: false,
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Debug: false,
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}
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w.Header().Set("X-Frame-Options", "DENY")
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w.Header().Set("X-XSS-Protection", "0")
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w.Header().Set("X-Content-Type-Options", "nosniff")
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w.Header().Set("Referrer-Policy", "no-referrer")
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w.Header().Set("Content-Security-Policy", "default-src 'self'")
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w.Header().Set("Permissions-Policy", "microphone=(), camera=(), geolocation=()")
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router := chi.NewRouter()
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router.MethodNotAllowed(methodNotAllowed)
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router.NotFound(notFound)
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router.Use(cors.Handler(corsOpts))
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router.Mount("/console/v1", http.StripPrefix("/console/v1", s.consoleHandler))
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router.Mount("/connect/v1", http.StripPrefix("/connect/v1", s.connectHandler))
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router.Mount("/cookie-banner/v1", http.StripPrefix("/cookie-banner/v1", s.cookieBannerHandler))
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router.Mount("/files/v1", http.StripPrefix("/files/v1", s.filesHandler))
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router.Mount("/trust/v1", http.StripPrefix("/trust/v1", s.compliancePageHandler))
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router.Mount("/mcp/v1", http.StripPrefix("/mcp/v1", s.mcpHandler))
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router.Mount("/slack/v1", http.StripPrefix("/slack/v1", s.slackHandler))
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s.csrf.Handler(router).ServeHTTP(w, r)
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}
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