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Correction LDAP validation (#342)

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* Correction LDAP username validation

As https://msdn.microsoft.com/en-us/library/aa366101(v=vs.85).aspx describe spaces should not be in start or at the end of username but they can be inside the username. So please check my solution for it.

* Check for zero length passwords in LDAP module.

According to https://tools.ietf.org/search/rfc4513#section-5.1.2 LDAP client should always check before bind whether a password is an empty value. There are at least one LDAP implementation which does not return error if you try to bind with DN set and empty password - AD.

* Clearing the login/email spaces at the [start/end]
This commit is contained in:
Denis Denisov 2016-12-12 02:46:51 +02:00 committed by Lunny Xiao
parent abcd39f7d5
commit f0a989c1d0
2 changed files with 7 additions and 2 deletions
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4
models/login_source.go
View file

@ -548,9 +548,9 @@ func ExternalUserLogin(user *User, login, password string, source *LoginSource,
func UserSignIn(username, password string) (*User, error) { func UserSignIn(username, password string) (*User, error) {
var user *User var user *User
if strings.Contains(username, "@") { if strings.Contains(username, "@") {
user = &User{Email: strings.ToLower(username)} user = &User{Email: strings.ToLower(strings.TrimSpace(username))}
} else { } else {
user = &User{LowerName: strings.ToLower(username)} user = &User{LowerName: strings.ToLower(strings.TrimSpace(username))}
} }
hasUser, err := x.Get(user) hasUser, err := x.Get(user)

5
modules/auth/ldap/ldap.go
View file

@ -151,6 +151,11 @@ func bindUser(l *ldap.Conn, userDN, passwd string) error {
// SearchEntry : search an LDAP source if an entry (name, passwd) is valid and in the specific filter // SearchEntry : search an LDAP source if an entry (name, passwd) is valid and in the specific filter
func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, string, string, string, bool, bool) { func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, string, string, string, bool, bool) {
// See https://tools.ietf.org/search/rfc4513#section-5.1.2
if len(passwd) == 0 {
log.Debug("Auth. failed for %s, password cannot be empty")
return "", "", "", "", false, false
}
l, err := dial(ls) l, err := dial(ls)
if err != nil { if err != nil {
log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err) log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err)