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// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package validation
import (
"fmt"
"regexp"
"strings"
"code.gitea.io/gitea/modules/auth"
"code.gitea.io/gitea/modules/git"
"gitea.com/go-chi/binding"
"github.com/gobwas/glob"
)
const (
// ErrGitRefName is git reference name error
ErrGitRefName = "GitRefNameError"
// ErrGlobPattern is returned when glob pattern is invalid
ErrGlobPattern = "GlobPattern"
// ErrRegexPattern is returned when a regex pattern is invalid
ErrRegexPattern = "RegexPattern"
// ErrUsername is username error
ErrUsername = "UsernameError"
// ErrInvalidGroupTeamMap is returned when a group team mapping is invalid
ErrInvalidGroupTeamMap = "InvalidGroupTeamMap"
)
// AddBindingRules adds additional binding rules
func AddBindingRules() {
addGitRefNameBindingRule()
addValidURLBindingRule()
addValidSiteURLBindingRule()
addGlobPatternRule()
addRegexPatternRule()
addGlobOrRegexPatternRule()
addUsernamePatternRule()
addValidGroupTeamMapRule()
}
func addGitRefNameBindingRule() {
// Git refname validation rule
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return strings.HasPrefix(rule, "GitRefName")
},
IsValid: func(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := fmt.Sprintf("%v", val)
if !git.IsValidRefPattern(str) {
errs.Add([]string{name}, ErrGitRefName, "GitRefName")
return false, errs
}
return true, errs
},
})
}
func addValidURLBindingRule() {
// URL validation rule
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return strings.HasPrefix(rule, "ValidUrl")
},
IsValid: func(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := fmt.Sprintf("%v", val)
if len(str) != 0 && !IsValidURL(str) {
errs.Add([]string{name}, binding.ERR_URL, "Url")
return false, errs
}
return true, errs
},
})
}
func addValidSiteURLBindingRule() {
// URL validation rule
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return strings.HasPrefix(rule, "ValidSiteUrl")
},
IsValid: func(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := fmt.Sprintf("%v", val)
if len(str) != 0 && !IsValidSiteURL(str) {
errs.Add([]string{name}, binding.ERR_URL, "Url")
return false, errs
}
return true, errs
},
})
}
func addGlobPatternRule() {
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return rule == "GlobPattern"
},
IsValid: globPatternValidator,
})
}
func globPatternValidator(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := fmt.Sprintf("%v", val)
if len(str) != 0 {
if _, err := glob.Compile(str); err != nil {
errs.Add([]string{name}, ErrGlobPattern, err.Error())
return false, errs
}
}
return true, errs
}
func addRegexPatternRule() {
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return rule == "RegexPattern"
},
IsValid: regexPatternValidator,
})
}
func regexPatternValidator(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := fmt.Sprintf("%v", val)
if _, err := regexp.Compile(str); err != nil {
errs.Add([]string{name}, ErrRegexPattern, err.Error())
return false, errs
}
return true, errs
}
func addGlobOrRegexPatternRule() {
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return rule == "GlobOrRegexPattern"
},
IsValid: func(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := strings.TrimSpace(fmt.Sprintf("%v", val))
if len(str) >= 2 && strings.HasPrefix(str, "/") && strings.HasSuffix(str, "/") {
return regexPatternValidator(errs, name, str[1:len(str)-1])
}
return globPatternValidator(errs, name, val)
},
})
}
func addUsernamePatternRule() {
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return rule == "Username"
},
IsValid: func(errs binding.Errors, name string, val any) (bool, binding.Errors) {
str := fmt.Sprintf("%v", val)
if !IsValidUsername(str) {
errs.Add([]string{name}, ErrUsername, "invalid username")
return false, errs
}
return true, errs
},
})
}
func addValidGroupTeamMapRule() {
binding.AddRule(&binding.Rule{
IsMatch: func(rule string) bool {
return strings.HasPrefix(rule, "ValidGroupTeamMap")
},
IsValid: func(errs binding.Errors, name string, val any) (bool, binding.Errors) {
_, err := auth.UnmarshalGroupTeamMapping(fmt.Sprintf("%v", val))
if err != nil {
errs.Add([]string{name}, ErrInvalidGroupTeamMap, err.Error())
return false, errs
}
return true, errs
},
})
}
func portOnly(hostport string) string {
colon := strings.IndexByte(hostport, ':')
if colon == -1 {
return ""
}
if i := strings.Index(hostport, "]:"); i != -1 {
return hostport[i+len("]:"):]
}
if strings.Contains(hostport, "]") {
return ""
}
return hostport[colon+len(":"):]
}
func validPort(p string) bool {
for _, r := range []byte(p) {
if r < '0' || r > '9' {
return false
}
}
return true
}
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