mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-16 14:56:16 +01:00
28 lines
819 B
Go
28 lines
819 B
Go
|
// Copyright 2023 The Gitea Authors. All rights reserved.
|
||
|
|
// SPDX-License-Identifier: MIT
|
||
|
|
|
||
|
|
package httplib
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net/url"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"code.gitea.io/gitea/modules/setting"
|
||
|
|
)
|
||
|
|
|
||
|
|
// IsRiskyRedirectURL returns true if the URL is considered risky for redirects
|
||
|
|
func IsRiskyRedirectURL(s string) bool {
|
||
|
|
// Unfortunately browsers consider a redirect Location with preceding "//", "\\", "/\" and "\/" as meaning redirect to "http(s)://REST_OF_PATH"
|
||
|
|
// Therefore we should ignore these redirect locations to prevent open redirects
|
||
|
|
if len(s) > 1 && (s[0] == '/' || s[0] == '\\') && (s[1] == '/' || s[1] == '\\') {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
u, err := url.Parse(s)
|
||
|
|
if err != nil || ((u.Scheme != "" || u.Host != "") && !strings.HasPrefix(strings.ToLower(s), strings.ToLower(setting.AppURL))) {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
return false
|
||
|
|
}
|