--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/steps/addressbook/groups.inc	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,154 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | program/steps/addressbook/groups.inc                                  |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2010-2013, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
+ |                                                                       |
+ | PURPOSE:                                                              |
+ |   Create/delete/rename contact groups and assign/remove contacts      |
+ |                                                                       |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ +-----------------------------------------------------------------------+
+*/
+
+$source   = rcube_utils::get_input_value('_source', rcube_utils::INPUT_GPC);
+$CONTACTS = rcmail_contact_source($source);
+
+if ($CONTACTS->readonly || !$CONTACTS->groups) {
+    $OUTPUT->show_message('sourceisreadonly', 'warning');
+    $OUTPUT->send();
+}
+
+if ($RCMAIL->action == 'group-addmembers') {
+    if (($gid = rcube_utils::get_input_value('_gid', rcube_utils::INPUT_POST)) && ($ids = rcmail_get_cids($source))) {
+        $plugin = $RCMAIL->plugins->exec_hook('group_addmembers', array(
+            'group_id' => $gid,
+            'ids'      => $ids,
+            'source'   => $source,
+        ));
+
+        $CONTACTS->set_group($gid);
+        $num2add = count($plugin['ids']);
+
+        if (!$plugin['abort']) {
+            if (($maxnum = $RCMAIL->config->get('max_group_members', 0)) && ($CONTACTS->count()->count + $num2add > $maxnum)) {
+                $OUTPUT->show_message('maxgroupmembersreached', 'warning', array('max' => $maxnum));
+                $OUTPUT->send();
+            }
+
+            $result = $CONTACTS->add_to_group($gid, $plugin['ids']);
+        }
+        else {
+            $result = $plugin['result'];
+        }
+
+        if ($result)
+            $OUTPUT->show_message('contactaddedtogroup');
+        else if ($plugin['abort'] || $CONTACTS->get_error())
+            $OUTPUT->show_message($plugin['message'] ?: 'errorsaving', 'error');
+        else
+            $OUTPUT->show_message($plugin['message'] ?: 'nogroupassignmentschanged');
+    }
+}
+else if ($RCMAIL->action == 'group-delmembers') {
+    if (($gid = rcube_utils::get_input_value('_gid', rcube_utils::INPUT_POST)) && ($ids = rcmail_get_cids($source))) {
+        $plugin = $RCMAIL->plugins->exec_hook('group_delmembers', array(
+            'group_id' => $gid,
+            'ids'      => $ids,
+            'source'   => $source,
+        ));
+
+        if (!$plugin['abort'])
+            $result = $CONTACTS->remove_from_group($gid, $plugin['ids']);
+        else
+            $result = $plugin['result'];
+
+        if ($result) {
+            $OUTPUT->show_message('contactremovedfromgroup');
+            $OUTPUT->command('remove_group_contacts',array('source' => $source, 'gid' => $gid));
+        }
+        else {
+            $OUTPUT->show_message($plugin['message'] ?: 'errorsaving', 'error');
+        }
+    }
+}
+else if ($RCMAIL->action == 'group-create') {
+    if ($name = trim(rcube_utils::get_input_value('_name', rcube_utils::INPUT_POST, true))) {
+        $plugin = $RCMAIL->plugins->exec_hook('group_create', array(
+            'name'   => $name,
+            'source' => $source,
+        ));
+
+        if (!$plugin['abort'])
+            $created = $CONTACTS->create_group($plugin['name']);
+        else
+            $created = $plugin['result'];
+    }
+
+    if ($created && $OUTPUT->ajax_call) {
+        $created['name'] = rcube::Q($created['name']);
+
+        $OUTPUT->show_message('groupcreated', 'confirmation');
+        $OUTPUT->command('insert_contact_group', array('source' => $source) + $created);
+    }
+    else if (!$created) {
+        $OUTPUT->show_message($plugin['message'] ?: 'errorsaving', 'error');
+    }
+}
+else if ($RCMAIL->action == 'group-rename') {
+    if (($gid = rcube_utils::get_input_value('_gid', rcube_utils::INPUT_POST))
+        && ($name = trim(rcube_utils::get_input_value('_name', rcube_utils::INPUT_POST, true)))
+    ) {
+        $plugin = $RCMAIL->plugins->exec_hook('group_rename', array(
+            'group_id' => $gid,
+            'name'     => $name,
+            'source'   => $source,
+        ));
+
+        if (!$plugin['abort'])
+            $newname = $CONTACTS->rename_group($gid, $plugin['name'], $newgid);
+        else
+            $newname = $plugin['result'];
+    }
+
+    if ($newname && $OUTPUT->ajax_call) {
+        $OUTPUT->show_message('grouprenamed', 'confirmation');
+        $OUTPUT->command('update_contact_group', array(
+            'source' => $source, 'id' => $gid, 'name' => rcube::Q($newname), 'newid' => $newgid));
+    }
+    else if (!$newname) {
+        $OUTPUT->show_message($plugin['message'] ?: 'errorsaving', 'error');
+    }
+}
+else if ($RCMAIL->action == 'group-delete') {
+    if ($gid = rcube_utils::get_input_value('_gid', rcube_utils::INPUT_POST)) {
+        $plugin = $RCMAIL->plugins->exec_hook('group_delete', array(
+            'group_id' => $gid,
+            'source'   => $source,
+        ));
+
+        if (!$plugin['abort'])
+            $deleted = $CONTACTS->delete_group($gid);
+        else
+            $deleted = $plugin['result'];
+    }
+
+    if ($deleted) {
+        $OUTPUT->show_message('groupdeleted', 'confirmation');
+        $OUTPUT->command('remove_group_item', array('source' => $source, 'id' => $gid));
+    }
+    else {
+        $OUTPUT->show_message($plugin['message'] ?: 'errorsaving', 'error');
+    }
+}
+
+// send response
+$OUTPUT->send();