mirror of
https://github.com/go-gitea/gitea.git
synced 2024-10-30 08:27:32 -04:00
94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
// Copyright 2018 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 validation
|
|
|
|
import (
|
|
"net"
|
|
"net/url"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/setting"
|
|
)
|
|
|
|
var externalTrackerRegex = regexp.MustCompile(`({?)(?:user|repo|index)+?(}?)`)
|
|
|
|
func isLoopbackIP(ip string) bool {
|
|
return net.ParseIP(ip).IsLoopback()
|
|
}
|
|
|
|
// IsValidURL checks if URL is valid
|
|
func IsValidURL(uri string) bool {
|
|
if u, err := url.ParseRequestURI(uri); err != nil ||
|
|
(u.Scheme != "http" && u.Scheme != "https") ||
|
|
!validPort(portOnly(u.Host)) {
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// IsValidSiteURL checks if URL is valid
|
|
func IsValidSiteURL(uri string) bool {
|
|
u, err := url.ParseRequestURI(uri)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
if !validPort(portOnly(u.Host)) {
|
|
return false
|
|
}
|
|
|
|
for _, scheme := range setting.Service.ValidSiteURLSchemes {
|
|
if scheme == u.Scheme {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// IsAPIURL checks if URL is current Gitea instance API URL
|
|
func IsAPIURL(uri string) bool {
|
|
return strings.HasPrefix(strings.ToLower(uri), strings.ToLower(setting.AppURL+"api"))
|
|
}
|
|
|
|
// IsValidExternalURL checks if URL is valid external URL
|
|
func IsValidExternalURL(uri string) bool {
|
|
if !IsValidURL(uri) || IsAPIURL(uri) {
|
|
return false
|
|
}
|
|
|
|
u, err := url.ParseRequestURI(uri)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
// Currently check only if not loopback IP is provided to keep compatibility
|
|
if isLoopbackIP(u.Hostname()) || strings.ToLower(u.Hostname()) == "localhost" {
|
|
return false
|
|
}
|
|
|
|
// TODO: Later it should be added to allow local network IP addresses
|
|
// only if allowed by special setting
|
|
|
|
return true
|
|
}
|
|
|
|
// IsValidExternalTrackerURLFormat checks if URL matches required syntax for external trackers
|
|
func IsValidExternalTrackerURLFormat(uri string) bool {
|
|
if !IsValidExternalURL(uri) {
|
|
return false
|
|
}
|
|
|
|
// check for typoed variables like /{index/ or /[repo}
|
|
for _, match := range externalTrackerRegex.FindAllStringSubmatch(uri, -1) {
|
|
if (match[1] == "{" || match[2] == "}") && (match[1] != "{" || match[2] != "}") {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|