forked from Shiloh/githaven
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
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"
|
|
"code.gitea.io/gitea/modules/util"
|
|
)
|
|
|
|
func urlIsRelative(s string, u *url.URL) 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 false
|
|
}
|
|
return u != nil && u.Scheme == "" && u.Host == ""
|
|
}
|
|
|
|
// IsRelativeURL detects if a URL is relative (no scheme or host)
|
|
func IsRelativeURL(s string) bool {
|
|
u, err := url.Parse(s)
|
|
return err == nil && urlIsRelative(s, u)
|
|
}
|
|
|
|
func IsCurrentGiteaSiteURL(s string) bool {
|
|
u, err := url.Parse(s)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
if u.Path != "" {
|
|
u.Path = "/" + util.PathJoinRelX(u.Path)
|
|
if !strings.HasSuffix(u.Path, "/") {
|
|
u.Path += "/"
|
|
}
|
|
}
|
|
if urlIsRelative(s, u) {
|
|
return u.Path == "" || strings.HasPrefix(strings.ToLower(u.Path), strings.ToLower(setting.AppSubURL+"/"))
|
|
}
|
|
if u.Path == "" {
|
|
u.Path = "/"
|
|
}
|
|
return strings.HasPrefix(strings.ToLower(u.String()), strings.ToLower(setting.AppURL))
|
|
}
|