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synced 2024-11-27 20:49:33 +08:00
Improve valid user name check (#20136)
Close https://github.com/go-gitea/gitea/issues/21640 Before: Gitea can create users like ".xxx" or "x..y", which is not ideal, it's already a consensus that dot filenames have special meanings, and `a..b` is a confusing name when doing cross repo compare. After: stricter Co-authored-by: Jason Song <i@wolfogre.com> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com> Co-authored-by: delvh <dev.lh@web.de>
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@ -29,6 +29,7 @@ import (
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"code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/timeutil"
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"code.gitea.io/gitea/modules/util"
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"code.gitea.io/gitea/modules/validation"
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"golang.org/x/crypto/argon2"
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"golang.org/x/crypto/bcrypt"
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@ -621,7 +622,7 @@ var (
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// IsUsableUsername returns an error when a username is reserved
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func IsUsableUsername(name string) error {
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// Validate username make sure it satisfies requirement.
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if db.AlphaDashDotPattern.MatchString(name) {
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if !validation.IsValidUsername(name) {
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// Note: usually this error is normally caught up earlier in the UI
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return db.ErrNameCharsNotAllowed{Name: name}
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}
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@ -10,7 +10,7 @@ type CreateUserOption struct {
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SourceID int64 `json:"source_id"`
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LoginName string `json:"login_name"`
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// required: true
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Username string `json:"username" binding:"Required;AlphaDashDot;MaxSize(40)"`
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Username string `json:"username" binding:"Required;Username;MaxSize(40)"`
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FullName string `json:"full_name" binding:"MaxSize(100)"`
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// required: true
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// swagger:strfmt email
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@ -24,6 +24,9 @@ const (
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// ErrRegexPattern is returned when a regex pattern is invalid
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ErrRegexPattern = "RegexPattern"
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// ErrUsername is username error
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ErrUsername = "UsernameError"
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)
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// AddBindingRules adds additional binding rules
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@ -34,6 +37,7 @@ func AddBindingRules() {
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addGlobPatternRule()
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addRegexPatternRule()
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addGlobOrRegexPatternRule()
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addUsernamePatternRule()
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}
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func addGitRefNameBindingRule() {
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@ -148,6 +152,22 @@ func addGlobOrRegexPatternRule() {
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})
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}
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func addUsernamePatternRule() {
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binding.AddRule(&binding.Rule{
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IsMatch: func(rule string) bool {
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return rule == "Username"
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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 !IsValidUsername(str) {
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errs.Add([]string{name}, ErrUsername, "invalid username")
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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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@ -91,3 +91,15 @@ func IsValidExternalTrackerURLFormat(uri string) bool {
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return true
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}
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var (
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validUsernamePattern = regexp.MustCompile(`^[\da-zA-Z][-.\w]*$`)
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invalidUsernamePattern = regexp.MustCompile(`[-._]{2,}|[-._]$`) // No consecutive or trailing non-alphanumeric chars
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)
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// IsValidUsername checks if username is valid
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func IsValidUsername(name string) bool {
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// It is difficult to find a single pattern that is both readable and effective,
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// but it's easier to use positive and negative checks.
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return validUsernamePattern.MatchString(name) && !invalidUsernamePattern.MatchString(name)
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}
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@ -155,3 +155,34 @@ func Test_IsValidExternalTrackerURLFormat(t *testing.T) {
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})
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}
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}
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func TestIsValidUsername(t *testing.T) {
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tests := []struct {
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arg string
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want bool
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}{
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{arg: "a", want: true},
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{arg: "abc", want: true},
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{arg: "0.b-c", want: true},
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{arg: "a.b-c_d", want: true},
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{arg: "", want: false},
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{arg: ".abc", want: false},
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{arg: "abc.", want: false},
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{arg: "a..bc", want: false},
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{arg: "a...bc", want: false},
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{arg: "a.-bc", want: false},
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{arg: "a._bc", want: false},
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{arg: "a_-bc", want: false},
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{arg: "a/bc", want: false},
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{arg: "☁️", want: false},
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{arg: "-", want: false},
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{arg: "--diff", want: false},
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{arg: "-im-here", want: false},
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{arg: "a space", want: false},
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}
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for _, tt := range tests {
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t.Run(tt.arg, func(t *testing.T) {
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assert.Equalf(t, tt.want, IsValidUsername(tt.arg), "IsValidUsername(%v)", tt.arg)
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})
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}
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}
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@ -135,6 +135,8 @@ func Validate(errs binding.Errors, data map[string]interface{}, f Form, l transl
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data["ErrorMsg"] = trName + l.Tr("form.glob_pattern_error", errs[0].Message)
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case validation.ErrRegexPattern:
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data["ErrorMsg"] = trName + l.Tr("form.regex_pattern_error", errs[0].Message)
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case validation.ErrUsername:
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data["ErrorMsg"] = trName + l.Tr("form.username_error")
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default:
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msg := errs[0].Classification
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if msg != "" && errs[0].Message != "" {
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@ -463,6 +463,7 @@ url_error = `'%s' is not a valid URL.`
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include_error = ` must contain substring '%s'.`
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glob_pattern_error = ` glob pattern is invalid: %s.`
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regex_pattern_error = ` regex pattern is invalid: %s.`
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username_error = ` can only contain alphanumeric chars ('0-9','a-z','A-Z'), dash ('-'), underscore ('_') and dot ('.'). It cannot begin or end with non-alphanumeric chars, and consecutive non-alphanumeric chars are also forbidden.`
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unknown_error = Unknown error:
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captcha_incorrect = The CAPTCHA code is incorrect.
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password_not_match = The passwords do not match.
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@ -18,7 +18,7 @@ import (
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type AdminCreateUserForm struct {
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LoginType string `binding:"Required"`
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LoginName string
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UserName string `binding:"Required;AlphaDashDot;MaxSize(40)"`
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UserName string `binding:"Required;Username;MaxSize(40)"`
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Email string `binding:"Required;Email;MaxSize(254)"`
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Password string `binding:"MaxSize(255)"`
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SendNotify bool
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@ -35,7 +35,7 @@ func (f *AdminCreateUserForm) Validate(req *http.Request, errs binding.Errors) b
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// AdminEditUserForm form for admin to create user
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type AdminEditUserForm struct {
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LoginType string `binding:"Required"`
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UserName string `binding:"AlphaDashDot;MaxSize(40)"`
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UserName string `binding:"Username;MaxSize(40)"`
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LoginName string
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FullName string `binding:"MaxSize(100)"`
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Email string `binding:"Required;Email;MaxSize(254)"`
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@ -24,7 +24,7 @@ import (
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// CreateOrgForm form for creating organization
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type CreateOrgForm struct {
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OrgName string `binding:"Required;AlphaDashDot;MaxSize(40)" locale:"org.org_name_holder"`
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OrgName string `binding:"Required;Username;MaxSize(40)" locale:"org.org_name_holder"`
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Visibility structs.VisibleType
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RepoAdminChangeTeamAccess bool
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}
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@ -37,7 +37,7 @@ func (f *CreateOrgForm) Validate(req *http.Request, errs binding.Errors) binding
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// UpdateOrgSettingForm form for updating organization settings
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type UpdateOrgSettingForm struct {
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Name string `binding:"Required;AlphaDashDot;MaxSize(40)" locale:"org.org_name_holder"`
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Name string `binding:"Required;Username;MaxSize(40)" locale:"org.org_name_holder"`
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FullName string `binding:"MaxSize(100)"`
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Description string `binding:"MaxSize(255)"`
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Website string `binding:"ValidUrl;MaxSize(255)"`
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@ -65,7 +65,7 @@ type InstallForm struct {
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PasswordAlgorithm string
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AdminName string `binding:"OmitEmpty;AlphaDashDot;MaxSize(30)" locale:"install.admin_name"`
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AdminName string `binding:"OmitEmpty;Username;MaxSize(30)" locale:"install.admin_name"`
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AdminPasswd string `binding:"OmitEmpty;MaxSize(255)" locale:"install.admin_password"`
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AdminConfirmPasswd string
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AdminEmail string `binding:"OmitEmpty;MinSize(3);MaxSize(254);Include(@)" locale:"install.admin_email"`
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@ -91,7 +91,7 @@ func (f *InstallForm) Validate(req *http.Request, errs binding.Errors) binding.E
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// RegisterForm form for registering
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type RegisterForm struct {
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UserName string `binding:"Required;AlphaDashDot;MaxSize(40)"`
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UserName string `binding:"Required;Username;MaxSize(40)"`
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Email string `binding:"Required;MaxSize(254)"`
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Password string `binding:"MaxSize(255)"`
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Retype string
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@ -243,7 +243,7 @@ func (f *IntrospectTokenForm) Validate(req *http.Request, errs binding.Errors) b
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// UpdateProfileForm form for updating profile
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type UpdateProfileForm struct {
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Name string `binding:"AlphaDashDot;MaxSize(40)"`
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Name string `binding:"Username;MaxSize(40)"`
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FullName string `binding:"MaxSize(100)"`
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KeepEmailPrivate bool
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Website string `binding:"ValidSiteUrl;MaxSize(255)"`
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@ -27,7 +27,7 @@ func (f *SignInOpenIDForm) Validate(req *http.Request, errs binding.Errors) bind
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// SignUpOpenIDForm form for signin up with OpenID
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type SignUpOpenIDForm struct {
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UserName string `binding:"Required;AlphaDashDot;MaxSize(40)"`
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UserName string `binding:"Required;Username;MaxSize(40)"`
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Email string `binding:"Required;Email;MaxSize(254)"`
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GRecaptchaResponse string `form:"g-recaptcha-response"`
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HcaptchaResponse string `form:"h-captcha-response"`
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@ -53,6 +53,22 @@ func TestRenameInvalidUsername(t *testing.T) {
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"%00",
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"thisHas ASpace",
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"p<A>tho>lo<gical",
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".",
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"..",
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".well-known",
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".abc",
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"abc.",
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"a..bc",
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"a...bc",
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"a.-bc",
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"a._bc",
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"a_-bc",
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"a/bc",
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"☁️",
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"-",
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"--diff",
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"-im-here",
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"a space",
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}
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session := loginUser(t, "user2")
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@ -68,7 +84,7 @@ func TestRenameInvalidUsername(t *testing.T) {
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htmlDoc := NewHTMLParser(t, resp.Body)
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assert.Contains(t,
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htmlDoc.doc.Find(".ui.negative.message").Text(),
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translation.NewLocale("en-US").Tr("form.alpha_dash_dot_error"),
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translation.NewLocale("en-US").Tr("form.username_error"),
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)
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unittest.AssertNotExistsBean(t, &user_model.User{Name: invalidUsername})
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@ -79,9 +95,7 @@ func TestRenameReservedUsername(t *testing.T) {
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defer tests.PrepareTestEnv(t)()
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reservedUsernames := []string{
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".",
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"..",
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".well-known",
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// ".", "..", ".well-known", // The names are not only reserved but also invalid
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"admin",
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"api",
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"assets",
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