2020-09-12 00:59:53 +02:00
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// gomuks - A terminal Matrix client written in Go.
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// Copyright (C) 2020 Tulir Asokan
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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 matrix
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import (
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"context"
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"errors"
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"net/http"
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"net/url"
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"time"
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"maunium.net/go/mautrix"
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"maunium.net/go/gomuks/debug"
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"maunium.net/go/gomuks/lib/open"
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)
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const uiaFallbackPage = `<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>gomuks user-interactive auth</title>
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<meta charset="utf-8"/>
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<style>
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body {
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text-align: center;
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}
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</style>
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</head>
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<body>
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<h2>Please complete the login in the popup window</h2>
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2020-09-12 01:47:10 +02:00
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<p>Keep this page open while logging in, it will close automatically after the login finishes.</p>
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2020-09-12 00:59:53 +02:00
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<button onclick="openPopup()">Open popup</button>
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<button onclick="finish(false)">Cancel</button>
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<script>
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const url = location.hash.substr(1)
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let popupWindow
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function finish(success) {
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if (popupWindow) {
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popupWindow.close()
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}
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fetch("", {method: success ? "POST" : "DELETE"}).then(() => window.close())
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}
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function openPopup() {
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popupWindow = window.open(url)
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}
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window.addEventListener("message", evt => evt.data === "authDone" && finish(true))
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</script>
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</body>
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</html>
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`
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func (c *Container) UIAFallback(loginType mautrix.AuthType, sessionID string) error {
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errChan := make(chan error, 1)
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server := &http.Server{Addr: ":29325"}
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server.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method == "GET" {
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w.Header().Add("Content-Type", "text/html")
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte(uiaFallbackPage))
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} else if r.Method == "POST" || r.Method == "DELETE" {
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w.Header().Add("Content-Type", "text/html")
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w.WriteHeader(http.StatusOK)
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go func() {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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err := server.Shutdown(ctx)
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if err != nil {
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debug.Printf("Failed to shut down SSO server: %v\n", err)
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}
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if r.Method == "DELETE" {
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errChan <- errors.New("login cancelled")
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} else {
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errChan <- nil
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}
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}()
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} else {
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w.WriteHeader(http.StatusMethodNotAllowed)
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}
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})
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go server.ListenAndServe()
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defer server.Close()
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2022-04-17 12:16:47 +02:00
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authURL := c.client.BuildURLWithQuery(mautrix.ClientURLPath{"v3", "auth", loginType, "fallback", "web"}, map[string]string{
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2020-09-12 00:59:53 +02:00
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"session": sessionID,
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})
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link := url.URL{
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Scheme: "http",
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Host: "localhost:29325",
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Path: "/",
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Fragment: authURL,
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}
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err := open.Open(link.String())
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if err != nil {
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return err
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}
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err = <-errChan
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return err
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}
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