130 lines
3.0 KiB
Go
130 lines
3.0 KiB
Go
// Copyright 2018 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package validation
|
|
|
|
import (
|
|
"net"
|
|
"net/url"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/setting"
|
|
|
|
"github.com/gobwas/glob"
|
|
)
|
|
|
|
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
|
|
}
|
|
|
|
// IsEmailDomainListed checks whether the domain of an email address
|
|
// matches a list of domains
|
|
func IsEmailDomainListed(globs []glob.Glob, email string) bool {
|
|
if len(globs) == 0 {
|
|
return false
|
|
}
|
|
|
|
n := strings.LastIndex(email, "@")
|
|
if n <= 0 {
|
|
return false
|
|
}
|
|
|
|
domain := strings.ToLower(email[n+1:])
|
|
|
|
for _, g := range globs {
|
|
if g.Match(domain) {
|
|
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
|
|
}
|
|
|
|
var (
|
|
validUsernamePattern = regexp.MustCompile(`^[\da-zA-Z][-.\w]*$`)
|
|
invalidUsernamePattern = regexp.MustCompile(`[-._]{2,}|[-._]$`) // No consecutive or trailing non-alphanumeric chars
|
|
)
|
|
|
|
// IsValidUsername checks if username is valid
|
|
func IsValidUsername(name string) bool {
|
|
// It is difficult to find a single pattern that is both readable and effective,
|
|
// but it's easier to use positive and negative checks.
|
|
return validUsernamePattern.MatchString(name) && !invalidUsernamePattern.MatchString(name)
|
|
}
|