--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/steps/addressbook/export.inc	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,176 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | program/steps/addressbook/export.inc                                  |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2008-2013, The Roundcube Dev Team                       |
+ | Copyright (C) 2011-2013, Kolab Systems AG                             |
+ |                                                                       |
+ | 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:                                                              |
+ |   Export the selected address book as vCard file                      |
+ |                                                                       |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ | Author: Aleksander Machniak <machniak@kolabsys.com>                   |
+ +-----------------------------------------------------------------------+
+*/
+
+$RCMAIL->request_security_check(rcube_utils::INPUT_GET);
+
+// Use search result
+if (!empty($_REQUEST['_search']) && isset($_SESSION['search'][$_REQUEST['_search']])) {
+    $sort_col = $RCMAIL->config->get('addressbook_sort_col', 'name');
+    $search  = (array)$_SESSION['search'][$_REQUEST['_search']];
+    $records = array();
+
+    // Get records from all sources
+    foreach ($search as $s => $set) {
+        $source = $RCMAIL->get_address_book($s);
+
+        // reset page
+        $source->set_page(1);
+        $source->set_pagesize(99999);
+        $source->set_search_set($set);
+
+        // get records
+        $result = $source->list_records();
+
+        while ($record = $result->next()) {
+            // because vcard_map is per-source we need to create vcard here
+            prepare_for_export($record, $source);
+
+            $record['sourceid'] = $s;
+            $key = rcube_addressbook::compose_contact_key($record, $sort_col);
+            $records[$key] = $record;
+        }
+
+        unset($result);
+    }
+
+    // sort the records
+    ksort($records, SORT_LOCALE_STRING);
+
+    // create resultset object
+    $count  = count($records);
+    $result = new rcube_result_set($count);
+    $result->records = array_values($records);
+}
+// selected contacts
+else if (!empty($_REQUEST['_cid'])) {
+    $sort_col = $RCMAIL->config->get('addressbook_sort_col', 'name');
+    $records  = array();
+
+    // Selected contact IDs (with multi-source support)
+    $cids = rcmail_get_cids();
+
+    foreach ($cids as $s => $ids) {
+        $source = $RCMAIL->get_address_book($s);
+        $result = $source->search('ID', $ids, 1, true, true);
+
+        while ($record = $result->next()) {
+            // because vcard_map is per-source we need to create vcard here
+            prepare_for_export($record, $source);
+
+            $record['sourceid'] = $s;
+            $key = rcube_addressbook::compose_contact_key($record, $sort_col);
+            $records[$key] = $record;
+        }
+    }
+
+    ksort($records, SORT_LOCALE_STRING);
+
+    // create resultset object
+    $count  = count($records);
+    $result = new rcube_result_set($count);
+    $result->records = array_values($records);
+}
+// selected directory/group
+else {
+    $CONTACTS = rcmail_contact_source(null, true);
+
+    // get contacts for this user
+    $CONTACTS->set_page(1);
+    $CONTACTS->set_pagesize(99999);
+    $result = $CONTACTS->list_records(null, 0, true);
+}
+
+// Give plugins a possibility to implement other output formats or modify the result
+$plugin = $RCMAIL->plugins->exec_hook('addressbook_export', array('result' => $result));
+$result = $plugin['result'];
+
+if ($plugin['abort']) {
+    exit;
+}
+
+// send downlaod headers
+header('Content-Type: text/vcard; charset=' . RCUBE_CHARSET);
+header('Content-Disposition: attachment; filename="contacts.vcf"');
+
+while ($result && ($row = $result->next())) {
+    if ($CONTACTS) {
+        prepare_for_export($row, $CONTACTS);
+    }
+
+    // fix folding and end-of-line chars
+    $row['vcard'] = preg_replace('/\r|\n\s+/', '', $row['vcard']);
+    $row['vcard'] = preg_replace('/\n/', rcube_vcard::$eol, $row['vcard']);
+    echo rcube_vcard::rfc2425_fold($row['vcard']) . rcube_vcard::$eol;
+}
+
+exit;
+
+
+/**
+ * Copy contact record properties into a vcard object
+ */
+function prepare_for_export(&$record, $source = null)
+{
+    $groups   = $source && $source->groups && $source->export_groups ? $source->get_record_groups($record['ID']) : null;
+    $fieldmap = $source ? $source->vcard_map : null;
+
+    if (empty($record['vcard'])) {
+        $vcard = new rcube_vcard($record['vcard'], RCUBE_CHARSET, false, $fieldmap);
+        $vcard->reset();
+
+        foreach ($record as $key => $values) {
+            list($field, $section) = explode(':', $key);
+            // avoid unwanted casting of DateTime objects to an array
+            // (same as in rcube_contacts::convert_save_data())
+            if (is_object($values) && is_a($values, 'DateTime')) {
+                $values = array($values);
+            }
+
+            foreach ((array) $values as $value) {
+                if (is_array($value) || is_a($value, 'DateTime') || @strlen($value)) {
+                    $vcard->set($field, $value, strtoupper($section));
+                }
+            }
+        }
+
+        // append group names
+        if ($groups) {
+            $vcard->set('groups', join(',', $groups), null);
+        }
+
+        $record['vcard'] = $vcard->export();
+    }
+    // patch categories to alread existing vcard block
+    else if ($record['vcard']) {
+        $vcard = new rcube_vcard($record['vcard'], RCUBE_CHARSET, false, $fieldmap);
+
+        // unset CATEGORIES entry, it might be not up-to-date (#1490277)
+        $vcard->set('groups', null);
+        $record['vcard'] = $vcard->export();
+
+        if (!empty($groups)) {
+            $vgroups = 'CATEGORIES:' . rcube_vcard::vcard_quote($groups, ',');
+            $record['vcard'] = str_replace('END:VCARD', $vgroups . rcube_vcard::$eol . 'END:VCARD', $record['vcard']);
+        }
+    }
+}