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Correction LDAP validation (#342)
* 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]
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@ -548,9 +548,9 @@ func ExternalUserLogin(user *User, login, password string, source *LoginSource,
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func UserSignIn(username, password string) (*User, error) {
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var user *User
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if strings.Contains(username, "@") {
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user = &User{Email: strings.ToLower(username)}
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user = &User{Email: strings.ToLower(strings.TrimSpace(username))}
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} else {
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user = &User{LowerName: strings.ToLower(username)}
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user = &User{LowerName: strings.ToLower(strings.TrimSpace(username))}
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}
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hasUser, err := x.Get(user)
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@ -151,6 +151,11 @@ func bindUser(l *ldap.Conn, userDN, passwd string) error {
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// SearchEntry : search an LDAP source if an entry (name, passwd) is valid and in the specific filter
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func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, string, string, string, bool, bool) {
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// See https://tools.ietf.org/search/rfc4513#section-5.1.2
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if len(passwd) == 0 {
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log.Debug("Auth. failed for %s, password cannot be empty")
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return "", "", "", "", false, false
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}
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l, err := dial(ls)
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if err != nil {
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log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err)
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