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Validate /websocket requests from browser dialer page (#3295)

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Fixes https://github.com/XTLS/Xray-core/issues/3236

---------

Co-authored-by: RPRX <63339210+RPRX@users.noreply.github.com>
This commit is contained in:
mmmray 2024-04-26 05:19:25 +02:00 committed by GitHub
parent 61800fcc66
commit 8ce2a0e245
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GPG key ID: B5690EEEBB952194
2 changed files with 12 additions and 5 deletions
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15
transport/internet/websocket/dialer.go
View file

@ -1,6 +1,7 @@
package websocket
import (
"bytes"
"context"
_ "embed"
"encoding/base64"
@ -14,6 +15,7 @@ import (
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/platform"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/common/uuid"
"github.com/xtls/xray-core/transport/internet"
"github.com/xtls/xray-core/transport/internet/stat"
"github.com/xtls/xray-core/transport/internet/tls"
@ -27,13 +29,18 @@ var conns chan *websocket.Conn
func init() {
addr := platform.NewEnvFlag(platform.BrowserDialerAddress).GetValue(func() string { return "" })
if addr != "" {
token := uuid.New()
csrfToken := token.String()
webpage = bytes.ReplaceAll(webpage, []byte("csrfToken"), []byte(csrfToken))
conns = make(chan *websocket.Conn, 256)
go http.ListenAndServe(addr, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/websocket" {
if conn, err := upgrader.Upgrade(w, r, nil); err == nil {
conns <- conn
} else {
newError("Browser dialer http upgrade unexpected error").AtError().WriteToLog()
if r.URL.Query().Get("token") == csrfToken {
if conn, err := upgrader.Upgrade(w, r, nil); err == nil {
conns <- conn
} else {
newError("Browser dialer http upgrade unexpected error").AtError().WriteToLog()
}
}
} else {
w.Write(webpage)

2
transport/internet/websocket/dialer.html
View file

@ -6,7 +6,7 @@
<body>
<script>
// Copyright (c) 2021 XRAY. Mozilla Public License 2.0.
var url = "ws://" + window.location.host + "/websocket"
var url = "ws://" + window.location.host + "/websocket?token=csrfToken"
var count = 0
setInterval(check, 1000)
function check() {