Платформа ЦРНП "Мирокод" для разработки проектов
https://git.mirocod.ru
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115 lines
2.5 KiB
115 lines
2.5 KiB
// Copyright 2018 The Gitea Authors. All rights reserved. |
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// Use of this source code is governed by a MIT-style |
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// license that can be found in the LICENSE file. |
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package validation |
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import ( |
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"net" |
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"net/url" |
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"regexp" |
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"strings" |
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"code.gitea.io/gitea/modules/setting" |
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) |
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var loopbackIPBlocks []*net.IPNet |
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var externalTrackerRegex = regexp.MustCompile(`({?)(?:user|repo|index)+?(}?)`) |
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func init() { |
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for _, cidr := range []string{ |
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"127.0.0.0/8", // IPv4 loopback |
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"::1/128", // IPv6 loopback |
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} { |
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if _, block, err := net.ParseCIDR(cidr); err == nil { |
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loopbackIPBlocks = append(loopbackIPBlocks, block) |
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} |
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} |
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} |
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func isLoopbackIP(ip string) bool { |
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pip := net.ParseIP(ip) |
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if pip == nil { |
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return false |
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} |
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for _, block := range loopbackIPBlocks { |
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if block.Contains(pip) { |
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return true |
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} |
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} |
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return false |
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} |
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// IsValidURL checks if URL is valid |
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func IsValidURL(uri string) bool { |
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if u, err := url.ParseRequestURI(uri); err != nil || |
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(u.Scheme != "http" && u.Scheme != "https") || |
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!validPort(portOnly(u.Host)) { |
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return false |
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} |
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return true |
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} |
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// IsValidSiteURL checks if URL is valid |
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func IsValidSiteURL(uri string) bool { |
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u, err := url.ParseRequestURI(uri) |
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if err != nil { |
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return false |
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} |
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if !validPort(portOnly(u.Host)) { |
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return false |
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} |
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for _, scheme := range setting.Service.ValidSiteURLSchemes { |
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if scheme == u.Scheme { |
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return true |
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} |
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} |
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return false |
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} |
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// IsAPIURL checks if URL is current Gitea instance API URL |
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func IsAPIURL(uri string) bool { |
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return strings.HasPrefix(strings.ToLower(uri), strings.ToLower(setting.AppURL+"api")) |
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} |
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// IsValidExternalURL checks if URL is valid external URL |
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func IsValidExternalURL(uri string) bool { |
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if !IsValidURL(uri) || IsAPIURL(uri) { |
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return false |
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} |
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u, err := url.ParseRequestURI(uri) |
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if err != nil { |
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return false |
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} |
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// Currently check only if not loopback IP is provided to keep compatibility |
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if isLoopbackIP(u.Hostname()) || strings.ToLower(u.Hostname()) == "localhost" { |
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return false |
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} |
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// TODO: Later it should be added to allow local network IP addresses |
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// only if allowed by special setting |
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return true |
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} |
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// IsValidExternalTrackerURLFormat checks if URL matches required syntax for external trackers |
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func IsValidExternalTrackerURLFormat(uri string) bool { |
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if !IsValidExternalURL(uri) { |
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return false |
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} |
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// check for typoed variables like /{index/ or /[repo} |
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for _, match := range externalTrackerRegex.FindAllStringSubmatch(uri, -1) { |
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if (match[1] == "{" || match[2] == "}") && (match[1] != "{" || match[2] != "}") { |
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return false |
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} |
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} |
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return true |
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}
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