066515429f
* Improve URL validation for external wiki and external issues * Do not allow also localhost address for external URLs
103 lines
2.5 KiB
Go
103 lines
2.5 KiB
Go
// Copyright 2017 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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"fmt"
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"regexp"
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"strings"
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"github.com/go-macaron/binding"
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)
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const (
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// ErrGitRefName is git reference name error
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ErrGitRefName = "GitRefNameError"
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)
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var (
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// GitRefNamePattern is regular expression with unallowed characters in git reference name
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GitRefNamePattern = regexp.MustCompile("[^\\d\\w-_\\./]")
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)
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// AddBindingRules adds additional binding rules
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func AddBindingRules() {
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addGitRefNameBindingRule()
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addValidURLBindingRule()
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}
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func addGitRefNameBindingRule() {
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// Git refname validation rule
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binding.AddRule(&binding.Rule{
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IsMatch: func(rule string) bool {
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return strings.HasPrefix(rule, "GitRefName")
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},
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IsValid: func(errs binding.Errors, name string, val interface{}) (bool, binding.Errors) {
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str := fmt.Sprintf("%v", val)
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if GitRefNamePattern.MatchString(str) {
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errs.Add([]string{name}, ErrGitRefName, "GitRefName")
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return false, errs
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}
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// Additional rules as described at https://www.kernel.org/pub/software/scm/git/docs/git-check-ref-format.html
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if strings.HasPrefix(str, "/") || strings.HasSuffix(str, "/") ||
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strings.HasSuffix(str, ".") || strings.Contains(str, "..") ||
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strings.Contains(str, "//") {
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errs.Add([]string{name}, ErrGitRefName, "GitRefName")
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return false, errs
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}
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parts := strings.Split(str, "/")
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for _, part := range parts {
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if strings.HasSuffix(part, ".lock") || strings.HasPrefix(part, ".") {
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errs.Add([]string{name}, ErrGitRefName, "GitRefName")
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return false, errs
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}
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}
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return true, errs
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},
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})
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}
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func addValidURLBindingRule() {
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// URL validation rule
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binding.AddRule(&binding.Rule{
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IsMatch: func(rule string) bool {
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return strings.HasPrefix(rule, "ValidUrl")
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},
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IsValid: func(errs binding.Errors, name string, val interface{}) (bool, binding.Errors) {
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str := fmt.Sprintf("%v", val)
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if len(str) != 0 && !IsValidURL(str) {
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errs.Add([]string{name}, binding.ERR_URL, "Url")
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return false, errs
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}
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return true, errs
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},
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})
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}
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func portOnly(hostport string) string {
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colon := strings.IndexByte(hostport, ':')
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if colon == -1 {
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return ""
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}
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if i := strings.Index(hostport, "]:"); i != -1 {
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return hostport[i+len("]:"):]
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}
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if strings.Contains(hostport, "]") {
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return ""
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}
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return hostport[colon+len(":"):]
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}
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func validPort(p string) bool {
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for _, r := range []byte(p) {
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if r < '0' || r > '9' {
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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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