forked from mirror/gitea
ca4107dc96
Follow #29960, `IsExternalURL` is not needed anymore. Add some tests for `RedirectToCurrentSite`
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package httplib
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import (
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"net/url"
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"strings"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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)
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func urlIsRelative(s string, u *url.URL) bool {
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// Unfortunately browsers consider a redirect Location with preceding "//", "\\", "/\" and "\/" as meaning redirect to "http(s)://REST_OF_PATH"
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// Therefore we should ignore these redirect locations to prevent open redirects
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if len(s) > 1 && (s[0] == '/' || s[0] == '\\') && (s[1] == '/' || s[1] == '\\') {
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return false
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}
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return u != nil && u.Scheme == "" && u.Host == ""
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}
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// IsRelativeURL detects if a URL is relative (no scheme or host)
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func IsRelativeURL(s string) bool {
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u, err := url.Parse(s)
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return err == nil && urlIsRelative(s, u)
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}
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func IsCurrentGiteaSiteURL(s string) bool {
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u, err := url.Parse(s)
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if err != nil {
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return false
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}
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if u.Path != "" {
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cleanedPath := util.PathJoinRelX(u.Path)
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if cleanedPath == "" || cleanedPath == "." {
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u.Path = "/"
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} else {
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u.Path += "/" + cleanedPath + "/"
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}
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}
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if urlIsRelative(s, u) {
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return u.Path == "" || strings.HasPrefix(strings.ToLower(u.Path), strings.ToLower(setting.AppSubURL+"/"))
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}
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if u.Path == "" {
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u.Path = "/"
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}
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return strings.HasPrefix(strings.ToLower(u.String()), strings.ToLower(setting.AppURL))
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}
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