Add an option to force getUser before LDAP password change (#714)

lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Password/AD.pm

@@ -30,6 +30,12 @@ sub confirm {
 
 sub modifyPassword {
     my ( $self, $req, $pwd, $useMail ) = @_;
+
+    # If the password change is done in a different backend,
+    # we need to reload the correct DN
+    $self->getUser( $req, useMail => $useMail )
+      if $self->conf->{ldapGetUserBeforePasswordChange};
+
     my $dn = $req->data->{dn} || $req->sessionInfo->{_dn};
     unless ($dn) {
         $self->logger->error('"dn" is not set, abort password modification');

lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Password/LDAP.pm

@@ -32,6 +32,11 @@ sub modifyPassword {
     my $dn;
     my $requireOldPassword;
 
+    # If the password change is done in a different backend,
+    # we need to reload the correct DN
+    $self->getUser( $req, useMail => $useMail )
+      if $self->conf->{ldapGetUserBeforePasswordChange};
+
     if ( $req->data->{dn} ) {
         $dn                 = $req->data->{dn};
         $requireOldPassword = $self->requireOldPwdRule->( $req, $req->userData );