--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/new_user_identity/new_user_identity.php	Thu Jan 04 15:50:29 2018 -0500
@@ -0,0 +1,132 @@
+<?php
+/**
+ * New user identity
+ *
+ * Populates a new user's default identity from LDAP on their first visit.
+ *
+ * This plugin requires that a working public_ldap directory be configured.
+ *
+ * @author Kris Steinhoff
+ * @license GNU GPLv3+
+ */
+class new_user_identity extends rcube_plugin
+{
+    public $task = 'login';
+
+    private $rc;
+    private $ldap;
+
+    function init()
+    {
+        $this->rc = rcmail::get_instance();
+
+        $this->add_hook('user_create', array($this, 'lookup_user_name'));
+        $this->add_hook('login_after', array($this, 'login_after'));
+    }
+
+    function lookup_user_name($args)
+    {
+        if ($this->init_ldap($args['host'])) {
+            $results = $this->ldap->search('*', $args['user'], true);
+
+            if (count($results->records) == 1) {
+                $user_name  = is_array($results->records[0]['name']) ? $results->records[0]['name'][0] : $results->records[0]['name'];
+                $user_email = is_array($results->records[0]['email']) ? $results->records[0]['email'][0] : $results->records[0]['email'];
+
+                $args['user_name']  = $user_name;
+                $args['email_list'] = array();
+
+                if (!$args['user_email'] && strpos($user_email, '@')) {
+                    $args['user_email'] = rcube_utils::idn_to_ascii($user_email);
+                }
+
+                foreach (array_keys($results[0]) as $key) {
+                    if (!preg_match('/^email($|:)/', $key)) {
+                        continue;
+                    }
+
+                    foreach ((array) $results->records[0][$key] as $alias) {
+                        if (strpos($alias, '@')) {
+                            $args['email_list'][] = rcube_utils::idn_to_ascii($alias);
+                        }
+                    }
+                }
+
+            }
+        }
+
+        return $args;
+    }
+
+    function login_after($args)
+    {
+        $this->load_config();
+
+        if ($this->ldap || !$this->rc->config->get('new_user_identity_onlogin')) {
+            return $args;
+        }
+
+        $identities = $this->rc->user->list_emails();
+        $ldap_entry = $this->lookup_user_name(array(
+                'user' => $this->rc->user->data['username'],
+                'host' => $this->rc->user->data['mail_host'],
+        ));
+
+        foreach ((array) $ldap_entry['email_list'] as $email) {
+            foreach ($identities as $identity) {
+                if ($identity['email'] == $email) {
+                    continue 2;
+                }
+            }
+
+            $plugin = $this->rc->plugins->exec_hook('identity_create', array(
+                'login'  => true,
+                'record' => array(
+                    'user_id'  => $this->rc->user->ID,
+                    'standard' => 0,
+                    'email'    => $email,
+                    'name'     => $ldap_entry['user_name']
+                ),
+            ));
+
+            if (!$plugin['abort'] && $plugin['record']['email']) {
+                $this->rc->user->insert_identity($plugin['record']);
+            }
+        }
+        return $args;
+    }
+
+    private function init_ldap($host)
+    {
+        if ($this->ldap) {
+            return $this->ldap->ready;
+        }
+
+        $this->load_config();
+
+        $addressbook = $this->rc->config->get('new_user_identity_addressbook');
+        $ldap_config = (array)$this->rc->config->get('ldap_public');
+        $match       = $this->rc->config->get('new_user_identity_match');
+
+        if (empty($addressbook) || empty($match) || empty($ldap_config[$addressbook])) {
+            return false;
+        }
+
+        $this->ldap = new new_user_identity_ldap_backend(
+            $ldap_config[$addressbook],
+            $this->rc->config->get('ldap_debug'),
+            $this->rc->config->mail_domain($host),
+            $match);
+
+        return $this->ldap->ready;
+    }
+}
+
+class new_user_identity_ldap_backend extends rcube_ldap
+{
+    function __construct($p, $debug, $mail_domain, $search)
+    {
+        parent::__construct($p, $debug, $mail_domain);
+        $this->prop['search_fields'] = (array)$search;
+    }
+}