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handle_http_portal.go
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handle_http_portal.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/andrewsonpradeep/go-authcrunch/pkg/requests"
"github.com/andrewsonpradeep/go-authcrunch/pkg/user"
addrutil "github.com/andrewsonpradeep/go-authcrunch/pkg/util/addr"
"go.uber.org/zap"
"net/http"
"net/url"
)
func (p *Portal) handleHTTPPortal(ctx context.Context, w http.ResponseWriter, r *http.Request, rr *requests.Request, parsedUser *user.User) error {
p.disableClientCache(w)
p.injectRedirectURL(ctx, w, r, rr)
if parsedUser == nil {
return p.handleHTTPRedirect(ctx, w, r, rr, "/login")
}
usr, err := p.sessions.Get(parsedUser.Claims.ID)
if err != nil {
p.deleteAuthCookies(w, r)
p.logger.Debug(
"User session not found, redirect to login",
zap.String("session_id", rr.Upstream.SessionID),
zap.String("request_id", rr.ID),
zap.Any("user", parsedUser.Claims),
zap.Error(err),
)
return p.handleHTTPRedirect(ctx, w, r, rr, "/login")
}
return p.handleHTTPPortalScreen(ctx, w, r, rr, usr)
}
func (p *Portal) handleHTTPPortalScreen(ctx context.Context, w http.ResponseWriter, r *http.Request, rr *requests.Request, usr *user.User) error {
if cookie, err := r.Cookie(p.cookie.Referer); err == nil {
redirectURL, err := url.Parse(cookie.Value)
if err == nil {
p.logger.Debug(
"Cookie-based redirect",
zap.String("session_id", rr.Upstream.SessionID),
zap.String("request_id", rr.ID),
zap.String("redirect_url", redirectURL.String()),
)
w.Header().Set("Location", redirectURL.String())
w.Header().Add("Set-Cookie", p.cookie.GetDeleteCookie(addrutil.GetSourceHost(r), p.cookie.Referer))
w.WriteHeader(http.StatusSeeOther)
return nil
}
}
resp := p.ui.GetArgs()
resp.BaseURL(rr.Upstream.BasePath)
resp.PageTitle = "Applications"
if len(usr.FrontendLinks) > 0 {
// Add additional frontend links.
resp.AddFrontendLinks(usr.FrontendLinks)
}
content, err := p.ui.Render("portal", resp)
if err != nil {
return p.handleHTTPRenderError(ctx, w, r, rr, err)
}
return p.handleHTTPRenderHTML(ctx, w, http.StatusOK, content.Bytes())
}