feat(authn-oidc): allow for dynamic post-logout redirection
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commit
132bf1e642
@ -7,6 +7,8 @@ import (
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"fmt"
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"net/http"
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"net/url"
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"slices"
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"strings"
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"text/template"
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"time"
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@ -35,9 +37,7 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
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return errors.WithStack(err)
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}
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baseURL := originalURL.Scheme + "://" + originalURL.Host
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options, err := fromStoreOptions(layer.Options, baseURL)
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options, err := fromStoreOptions(layer.Options)
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if err != nil {
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return errors.WithStack(err)
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}
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@ -47,7 +47,7 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
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logger.Error(ctx, "could not retrieve session", logger.E(errors.WithStack(err)))
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}
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loginCallbackURL, err := a.getLoginCallbackURL(layer.Proxy, layer.Name, options)
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loginCallbackURL, err := a.getLoginCallbackURL(originalURL, layer.Proxy, layer.Name, options)
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if err != nil {
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return errors.WithStack(err)
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}
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@ -57,20 +57,20 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
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return errors.WithStack(err)
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}
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loginCallbackURLPattern, err := a.templatize(options.OIDC.MatchLoginCallbackURL, layer.Proxy, layer.Name)
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loginCallbackPathPattern, err := a.templatize(options.OIDC.MatchLoginCallbackPath, layer.Proxy, layer.Name)
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if err != nil {
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return errors.WithStack(err)
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}
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logoutURLPattern, err := a.templatize(options.OIDC.MatchLogoutURL, layer.Proxy, layer.Name)
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logoutPathPattern, err := a.templatize(options.OIDC.MatchLogoutPath, layer.Proxy, layer.Name)
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if err != nil {
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return errors.WithStack(err)
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}
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logger.Debug(ctx, "checking url", logger.F("loginCallbackURLPattern", loginCallbackURLPattern), logger.F("logoutURLPattern", logoutURLPattern))
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logger.Debug(ctx, "checking url", logger.F("loginCallbackPathPattern", loginCallbackPathPattern), logger.F("logoutPathPattern", logoutPathPattern))
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switch {
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case wildcard.Match(originalURL.String(), loginCallbackURLPattern):
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case wildcard.Match(originalURL.Path, loginCallbackPathPattern):
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if err := client.HandleCallback(w, r, sess); err != nil {
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return errors.WithStack(err)
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}
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@ -80,10 +80,23 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
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metricLabelProxy: string(layer.Proxy),
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}).Add(1)
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case wildcard.Match(originalURL.String(), logoutURLPattern):
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postLogoutRedirectURL := options.OIDC.PostLogoutRedirectURL
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if options.OIDC.PostLogoutRedirectURL == "" {
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postLogoutRedirectURL = originalURL.Scheme + "://" + originalURL.Host
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case wildcard.Match(originalURL.Path, logoutPathPattern):
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postLogoutRedirectURL := r.URL.Query().Get("redirect")
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if postLogoutRedirectURL != "" {
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isAuthorized := slices.Contains(options.OIDC.PostLogoutRedirectURLs, postLogoutRedirectURL)
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if !isAuthorized {
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http.Error(w, "unauthorized post-logout redirect", http.StatusBadRequest)
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return errors.WithStack(authn.ErrSkipRequest)
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}
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}
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if postLogoutRedirectURL == "" {
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if options.OIDC.PublicBaseURL != "" {
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postLogoutRedirectURL = options.OIDC.PublicBaseURL
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} else {
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postLogoutRedirectURL = originalURL.Scheme + "://" + originalURL.Host
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}
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}
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if err := client.HandleLogout(w, r, sess, postLogoutRedirectURL); err != nil {
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@ -103,14 +116,7 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
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func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, layer *store.Layer) (*authn.User, error) {
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ctx := r.Context()
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originalURL, err := director.OriginalURL(ctx)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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baseURL := originalURL.Scheme + "://" + originalURL.Host
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options, err := fromStoreOptions(layer.Options, baseURL)
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options, err := fromStoreOptions(layer.Options)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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@ -142,7 +148,12 @@ func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, lay
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sess.Options.SameSite = http.SameSiteDefaultMode
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}
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loginCallbackURL, err := a.getLoginCallbackURL(layer.Proxy, layer.Name, options)
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originalURL, err := director.OriginalURL(ctx)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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loginCallbackURL, err := a.getLoginCallbackURL(originalURL, layer.Proxy, layer.Name, options)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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@ -152,7 +163,12 @@ func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, lay
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return nil, errors.WithStack(err)
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}
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idToken, err := client.Authenticate(w, r, sess)
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postLoginRedirectURL, err := a.mergeURL(originalURL, originalURL.Path, options.OIDC.PublicBaseURL, true)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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idToken, err := client.Authenticate(w, r, sess, postLoginRedirectURL.String())
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if err != nil {
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if errors.Is(err, ErrLoginRequired) {
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metricLoginRequestsTotal.With(prometheus.Labels{
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@ -166,7 +182,7 @@ func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, lay
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return nil, errors.WithStack(err)
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}
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user, err := a.toUser(idToken, layer.Proxy, layer.Name, options, sess)
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user, err := a.toUser(originalURL, idToken, layer.Proxy, layer.Name, options, sess)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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@ -224,7 +240,7 @@ func (c claims) AsAttrs() map[string]any {
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return attrs
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}
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func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions, sess *sessions.Session) (*authn.User, error) {
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func (a *Authenticator) toUser(originalURL *url.URL, idToken *oidc.IDToken, proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions, sess *sessions.Session) (*authn.User, error) {
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var claims claims
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if err := idToken.Claims(&claims); err != nil {
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@ -237,7 +253,7 @@ func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName,
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attrs := claims.AsAttrs()
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logoutURL, err := a.getLogoutURL(proxyName, layerName, options)
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logoutURL, err := a.getLogoutURL(originalURL, proxyName, layerName, options)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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@ -261,36 +277,65 @@ func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName,
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return user, nil
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}
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func (a *Authenticator) getLoginCallbackURL(proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) (*url.URL, error) {
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url, err := a.generateURL(options.OIDC.LoginCallbackURL, proxyName, layerName)
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func (a *Authenticator) getLoginCallbackURL(originalURL *url.URL, proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) (*url.URL, error) {
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path, err := a.templatize(options.OIDC.LoginCallbackPath, proxyName, layerName)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return url, nil
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merged, err := a.mergeURL(originalURL, path, options.OIDC.PublicBaseURL, false)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return merged, nil
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}
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func (a *Authenticator) getLogoutURL(proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) (*url.URL, error) {
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url, err := a.generateURL(options.OIDC.LogoutURL, proxyName, layerName)
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func (a *Authenticator) getLogoutURL(originalURL *url.URL, proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) (*url.URL, error) {
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path, err := a.templatize(options.OIDC.LogoutPath, proxyName, layerName)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return url, nil
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merged, err := a.mergeURL(originalURL, path, options.OIDC.PublicBaseURL, true)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return merged, nil
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}
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func (a *Authenticator) generateURL(rawURLTemplate string, proxyName store.ProxyName, layerName store.LayerName) (*url.URL, error) {
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rawURL, err := a.templatize(rawURLTemplate, proxyName, layerName)
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if err != nil {
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return nil, errors.WithStack(err)
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func (a *Authenticator) mergeURL(base *url.URL, path string, overlay string, withQuery bool) (*url.URL, error) {
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merged := &url.URL{
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Scheme: base.Scheme,
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Host: base.Host,
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Path: path,
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}
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url, err := url.Parse(rawURL)
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if err != nil {
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return nil, errors.WithStack(err)
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if withQuery {
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merged.RawQuery = base.RawQuery
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}
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return url, nil
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if overlay != "" {
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overlayURL, err := url.Parse(overlay)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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merged.Scheme = overlayURL.Scheme
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merged.Host = overlayURL.Host
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merged.Path = overlayURL.Path + strings.TrimPrefix(path, "/")
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for key, values := range overlayURL.Query() {
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query := merged.Query()
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for _, v := range values {
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query.Add(key, v)
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}
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merged.RawQuery = query.Encode()
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}
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}
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return merged, nil
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}
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func (a *Authenticator) templatize(rawTemplate string, proxyName store.ProxyName, layerName store.LayerName) (string, error) {
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@ -2,12 +2,10 @@ package oidc
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import (
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"bytes"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
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"github.com/coreos/go-oidc/v3/oidc"
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"github.com/dchest/uniuri"
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"github.com/gorilla/sessions"
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@ -46,12 +44,12 @@ func (c *Client) Provider() *oidc.Provider {
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return c.provider
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}
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func (c *Client) Authenticate(w http.ResponseWriter, r *http.Request, sess *sessions.Session) (*oidc.IDToken, error) {
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func (c *Client) Authenticate(w http.ResponseWriter, r *http.Request, sess *sessions.Session, postLoginRedirectURL string) (*oidc.IDToken, error) {
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idToken, err := c.getIDToken(r, sess)
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if err != nil {
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logger.Error(r.Context(), "could not retrieve idtoken", logger.E(errors.WithStack(err)))
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logger.Warn(r.Context(), "could not retrieve idtoken", logger.E(errors.WithStack(err)))
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c.login(w, r, sess)
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c.login(w, r, sess, postLoginRedirectURL)
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return nil, errors.WithStack(ErrLoginRequired)
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}
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@ -59,23 +57,15 @@ func (c *Client) Authenticate(w http.ResponseWriter, r *http.Request, sess *sess
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return idToken, nil
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}
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func (c *Client) login(w http.ResponseWriter, r *http.Request, sess *sessions.Session) {
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func (c *Client) login(w http.ResponseWriter, r *http.Request, sess *sessions.Session, postLoginRedirectURL string) {
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ctx := r.Context()
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state := uniuri.New()
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nonce := uniuri.New()
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originalURL, err := director.OriginalURL(ctx)
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if err != nil {
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logger.Error(ctx, "could not retrieve original url", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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sess.Values[sessionKeyLoginState] = state
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sess.Values[sessionKeyLoginNonce] = nonce
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sess.Values[sessionKeyPostLoginRedirectURL] = fmt.Sprintf("%s?%s", originalURL.Path, originalURL.Query().Encode())
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sess.Values[sessionKeyPostLoginRedirectURL] = postLoginRedirectURL
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if err := sess.Save(r, w); err != nil {
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logger.Error(ctx, "could not save session", logger.E(errors.WithStack(err)))
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@ -249,7 +239,7 @@ func (c *Client) validate(r *http.Request, sess *sessions.Session) (*oauth2.Toke
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func (c *Client) getRawIDToken(sess *sessions.Session) (string, error) {
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rawIDToken, ok := sess.Values[sessionKeyIDToken].(string)
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if !ok || rawIDToken == "" {
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return "", errors.New("invalid id token")
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return "", errors.New("id token not found")
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}
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return rawIDToken, nil
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@ -17,9 +17,13 @@
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"title": "URL de base du fournisseur OpenID Connect (racine du .well-known/openid-configuration)",
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"type": "string"
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},
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"postLogoutRedirectURL": {
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"title": "URL de redirection après déconnexion",
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"type": "string"
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"postLogoutRedirectURLs": {
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"title": "URLs de redirection après déconnexion autorisées",
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"description": "La variable d'URL 'redirect=<url>' peut être utilisée pour spécifier une redirection après déconnexion.",
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"type": "array",
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"item": {
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"type": "string"
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}
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},
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"scopes": {
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"title": "Scopes associés au client OpenID Connect",
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@ -42,27 +46,33 @@
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}
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}
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},
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"loginCallbackURL": {
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"loginCallbackPath": {
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"title": "Chemin associé à l'URL de callback OpenID Connect",
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"default": "<scheme>://<host>/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback",
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"default": "/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback",
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"description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}' peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
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"type": "string"
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},
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"matchLoginCallbackURL": {
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"title": "Patron de correspondance de l'URL interne de callback OpenID Connect",
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"default": "*/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback",
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"matchLoginCallbackPath": {
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"title": "Patron de correspondance du chemin interne de callback OpenID Connect",
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"default": "*.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback",
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"description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}' peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
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"type": "string"
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},
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"logoutURL": {
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"logoutPath": {
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"title": "Chemin associé à l'URL de déconnexion",
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"default": "<scheme>://<host>/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout",
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"default": "/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout",
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"description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}' peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
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"type": "string"
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},
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"matchLogoutURL": {
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"title": "Patron de correspondance l'URL interne de déconnexion",
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"default": "*/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout",
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"publicBaseURL": {
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"title": "URL publique de base associée au service distant",
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"default": "",
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"description": "Peut être utilisé par exemple si il y a discordance de nom d'hôte ou de chemin sur les URLs publiques/internes.",
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"type": "string"
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},
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"matchLogoutPath": {
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"title": "Patron de correspondance du chemin interne de déconnexion",
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"default": "*.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout",
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"description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}' peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
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"type": "string"
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},
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@ -19,13 +19,14 @@ type LayerOptions struct {
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type OIDCOptions struct {
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ClientID string `mapstructure:"clientId"`
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ClientSecret string `mapstructure:"clientSecret"`
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LoginCallbackURL string `mapstructure:"loginCallbackURL"`
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MatchLoginCallbackURL string `mapstructure:"matchLoginCallbackURL"`
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LogoutURL string `mapstructure:"logoutURL"`
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MatchLogoutURL string `mapstructure:"matchLogoutURL"`
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PublicBaseURL string `mapstructure:"publicBaseURL"`
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LoginCallbackPath string `mapstructure:"loginCallbackPath"`
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MatchLoginCallbackPath string `mapstructure:"matchLoginCallbackPath"`
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LogoutPath string `mapstructure:"logoutPath"`
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MatchLogoutPath string `mapstructure:"matchLogoutPath"`
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IssuerURL string `mapstructure:"issuerURL"`
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SkipIssuerVerification bool `mapstructure:"skipIssuerVerification"`
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PostLogoutRedirectURL string `mapstructure:"postLogoutRedirectURL"`
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PostLogoutRedirectURLs []string `mapstructure:"postLogoutRedirectURLs"`
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TLSInsecureSkipVerify bool `mapstructure:"tlsInsecureSkipVerify"`
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Scopes []string `mapstructure:"scopes"`
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AuthParams map[string]string `mapstructure:"authParams"`
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@ -41,18 +42,19 @@ type CookieOptions struct {
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MaxAge time.Duration `mapstructure:"maxAge"`
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}
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func fromStoreOptions(storeOptions store.LayerOptions, baseURL string) (*LayerOptions, error) {
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loginCallbackPath := "/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback"
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logoutPath := "/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout"
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func fromStoreOptions(storeOptions store.LayerOptions) (*LayerOptions, error) {
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loginCallbackPath := ".bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback"
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logoutPath := ".bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout"
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layerOptions := LayerOptions{
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LayerOptions: authn.DefaultLayerOptions(),
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OIDC: OIDCOptions{
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||||
LoginCallbackURL: baseURL + loginCallbackPath,
|
||||
MatchLoginCallbackURL: "*" + loginCallbackPath + "*",
|
||||
LogoutURL: baseURL + logoutPath,
|
||||
MatchLogoutURL: "*" + logoutPath + "*",
|
||||
Scopes: []string{"openid"},
|
||||
PublicBaseURL: "",
|
||||
LoginCallbackPath: loginCallbackPath,
|
||||
MatchLoginCallbackPath: "*" + loginCallbackPath,
|
||||
LogoutPath: logoutPath,
|
||||
MatchLogoutPath: "*" + logoutPath,
|
||||
Scopes: []string{"openid"},
|
||||
},
|
||||
Cookie: CookieOptions{
|
||||
Name: defaultCookieName,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user