111 lines
3.4 KiB
Go
111 lines
3.4 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-present Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package openid
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import (
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"net/url"
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"code.vikunja.io/api/pkg/models"
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)
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// EndSessionEndpoint returns the provider's RP-Initiated Logout endpoint
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// (discovery's end_session_endpoint, cached at init), falling back to the static
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// logouturl. Never triggers discovery so logout stays responsive when the OP is
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// unreachable.
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func (p *Provider) EndSessionEndpoint() string {
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if p.EndSessionURL != "" {
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return p.EndSessionURL
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}
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return p.LogoutURL
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}
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// discoveredEndSessionEndpoint reads end_session_endpoint from the discovery
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// document already cached on the *oidc.Provider, so Claims unmarshals in memory
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// without a request.
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func (p *Provider) discoveredEndSessionEndpoint() string {
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if p.openIDProvider == nil {
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return ""
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}
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var meta struct {
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EndSessionEndpoint string `json:"end_session_endpoint"`
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}
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if err := p.openIDProvider.Claims(&meta); err != nil {
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log.Debugf("Could not read end_session_endpoint for provider %s: %v", p.Key, err)
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return ""
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}
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return meta.EndSessionEndpoint
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}
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// BuildEndSessionURL builds an OpenID Connect RP-Initiated Logout 1.0 request URL
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// (id_token_hint + post_logout_redirect_uri + client_id; see RP-Initiated Logout
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// 1.0 §2). post_logout_redirect_uri defaults to service.publicurl, and the OP
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// only honors it when id_token_hint is present. Returns "" when neither an
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// end_session_endpoint nor a static logouturl is configured.
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func BuildEndSessionURL(providerKey string, oidc *models.SessionOIDCData) (string, error) {
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// GetProvider would trigger OIDC discovery (a live HTTP GET that blocks when
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// the OP is down); the cached static fields are all logout needs.
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provider, err := getCachedProvider(providerKey)
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if err != nil {
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return "", err
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}
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if provider == nil {
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return "", nil
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}
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idToken := ""
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if oidc != nil {
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idToken = oidc.IDToken
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}
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return buildEndSessionURL(
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provider.EndSessionEndpoint(),
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provider.ClientID,
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idToken,
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config.ServicePublicURL.GetString(),
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)
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}
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// buildEndSessionURL appends the logout query params onto endpoint, omitting
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// empty ones, and returns "" for an empty endpoint.
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func buildEndSessionURL(endpoint, clientID, idToken, postLogoutRedirectURI string) (string, error) {
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if endpoint == "" {
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return "", nil
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}
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u, err := url.Parse(endpoint)
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if err != nil {
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return "", err
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}
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q := u.Query()
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if clientID != "" {
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q.Set("client_id", clientID)
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}
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if idToken != "" {
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q.Set("id_token_hint", idToken)
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}
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if postLogoutRedirectURI != "" {
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q.Set("post_logout_redirect_uri", postLogoutRedirectURI)
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}
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u.RawQuery = q.Encode()
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return u.String(), nil
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}
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