+ if (!empty($aliasstring)) {
+ $aliases = array_map('common_canonical_nickname', array_unique(preg_split('/[\s,]+/', $aliasstring)));
+ } else {
+ $aliases = array();
+ }
+
+ if (count($aliases) > common_config('group', 'maxaliases')) {
+ $this->showForm(sprintf(_('Too many aliases! Maximum %d.'),
+ common_config('group', 'maxaliases')));
+ return;
+ }
+
+ foreach ($aliases as $alias) {
+ if (!Validate::string($alias, array('min_length' => 1,
+ 'max_length' => 64,
+ 'format' => NICKNAME_FMT))) {
+ $this->showForm(sprintf(_('Invalid alias: "%s"'), $alias));
+ return;
+ }
+ if ($this->nicknameExists($alias)) {
+ $this->showForm(sprintf(_('Alias "%s" already in use. Try another one.'),
+ $alias));
+ return;
+ }
+ // XXX assumes alphanum nicknames
+ if (strcmp($alias, $nickname) == 0) {
+ $this->showForm(_('Alias can\'t be the same as nickname.'));
+ return;
+ }
+ }
+
+ $this->group->query('BEGIN');
+