forgejo-federation/modules/util/url.go

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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package util
import (
"net/url"
"path"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
// PathEscapeSegments escapes segments of a path while not escaping forward slash
func PathEscapeSegments(path string) string {
slice := strings.Split(path, "/")
for index := range slice {
slice[index] = url.PathEscape(slice[index])
}
escapedPath := strings.Join(slice, "/")
return escapedPath
}
// URLJoin joins url components, like path.Join, but preserving contents
func URLJoin(base string, elems ...string) string {
if !strings.HasSuffix(base, "/") {
base += "/"
}
baseURL, err := url.Parse(base)
if err != nil {
log.Error(4, "URLJoin: Invalid base URL %s", base)
return ""
}
joinedPath := path.Join(elems...)
argURL, err := url.Parse(joinedPath)
if err != nil {
log.Error(4, "URLJoin: Invalid arg %s", joinedPath)
return ""
}
joinedURL := baseURL.ResolveReference(argURL).String()
if !baseURL.IsAbs() && !strings.HasPrefix(base, "/") {
return joinedURL[1:] // Removing leading '/' if needed
}
return joinedURL
}
// IsExternalURL checks if rawURL points to an external URL like http://example.com
func IsExternalURL(rawURL string) bool {
parsed, err := url.Parse(rawURL)
if err != nil {
return true
}
if len(parsed.Host) != 0 && strings.Replace(parsed.Host, "www.", "", 1) != strings.Replace(setting.Domain, "www.", "", 1) {
return true
}
return false
}