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handle_external_http_logout.go
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handle_external_http_logout.go
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// Copyright 2022 Paul Greenberg greenpau@outlook.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package authn
import (
"context"
"github.com/datamixio/lib-go-authcrunch/pkg/requests"
"net/http"
"path"
"strings"
)
func (p *Portal) handleHTTPExternalLogout(ctx context.Context, w http.ResponseWriter, r *http.Request, rr *requests.Request, authMethod string) error {
p.disableClientCache(w)
authRealm, err := getEndpoint(r.URL.Path, "/"+authMethod+"/")
if err != nil {
return p.handleHTTPError(ctx, w, r, rr, http.StatusBadRequest)
}
authRealm = strings.Split(authRealm, "/")[0]
provider := p.getIdentityProviderByRealm(authRealm)
if provider == nil {
return p.handleHTTPRedirect(ctx, w, r, rr, "/login")
}
providerIdentityTokenCookieName := provider.GetIdentityTokenCookieName()
if providerIdentityTokenCookieName != "" {
w.Header().Add("Set-Cookie", p.cookie.GetDeleteIdentityTokenCookie(providerIdentityTokenCookieName))
}
cfg := provider.GetConfig()
logoutEnabled := false
if v, exists := cfg["logout_enabled"]; exists {
logoutEnabled = v.(bool)
}
if !logoutEnabled {
return p.handleHTTPRedirect(ctx, w, r, rr, "/login")
}
providerLogoutURL := provider.GetLogoutURL()
if providerLogoutURL == "" {
return p.handleHTTPRedirect(ctx, w, r, rr, "/login")
}
switch provider.GetDriver() {
case "cognito":
// Add redirect_uri to the logout URL.
providerLogoutURL += "&logout_uri=" + rr.Upstream.BaseURL + path.Join(rr.Upstream.BasePath, "/logout")
}
return p.handleHTTPRedirectExternal(ctx, w, r, rr, providerLogoutURL)
}