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libkolab.php
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libkolab.php
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<?php
/**
* Kolab core library
*
* Plugin to setup a basic environment for the interaction with a Kolab server.
* Other Kolab-related plugins will depend on it and can use the library classes
*
* @version @package_version@
* @author Thomas Bruederli <bruederli@kolabsys.com>
*
* Copyright (C) 2012-2015, Kolab Systems AG <contact@kolabsys.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class libkolab extends rcube_plugin
{
static $http_requests = array();
static $bonnie_api = false;
/**
* Required startup method of a Roundcube plugin
*/
public function init()
{
// load local config
$this->load_config();
// extend include path to load bundled lib classes
$include_path = $this->home . '/lib' . PATH_SEPARATOR . ini_get('include_path');
set_include_path($include_path);
$this->add_hook('storage_init', array($this, 'storage_init'));
$this->add_hook('user_delete', array('kolab_storage', 'delete_user_folders'));
$rcmail = rcube::get_instance();
try {
kolab_format::$timezone = new DateTimeZone($rcmail->config->get('timezone', 'GMT'));
}
catch (Exception $e) {
rcube::raise_error($e, true);
kolab_format::$timezone = new DateTimeZone('GMT');
}
$this->add_texts('localization/', false);
// embed scripts and templates for email message audit trail
if ($rcmail->task == 'mail' && self::get_bonnie_api()) {
if ($rcmail->output->type == 'html') {
$this->add_hook('render_page', array($this, 'bonnie_render_page'));
$this->include_script('js/audittrail.js');
$this->include_stylesheet($this->local_skin_path() . '/libkolab.css');
// add 'Show history' item to message menu
$this->api->add_content(html::tag('li', null,
$this->api->output->button(array(
'command' => 'kolab-mail-history',
'label' => 'libkolab.showhistory',
'type' => 'link',
'classact' => 'icon history active',
'class' => 'icon history',
'innerclass' => 'icon history',
))),
'messagemenu');
}
$this->register_action('plugin.message-changelog', array($this, 'message_changelog'));
}
}
/**
* Hook into IMAP FETCH HEADER.FIELDS command and request Kolab-specific headers
*/
function storage_init($p)
{
$p['fetch_headers'] = trim($p['fetch_headers'] .' X-KOLAB-TYPE X-KOLAB-MIME-VERSION');
return $p;
}
/**
* Getter for a singleton instance of the Bonnie API
*
* @return mixed kolab_bonnie_api instance if configured, false otherwise
*/
public static function get_bonnie_api()
{
// get configuration for the Bonnie API
if (!self::$bonnie_api && ($bonnie_config = rcube::get_instance()->config->get('kolab_bonnie_api', false))) {
self::$bonnie_api = new kolab_bonnie_api($bonnie_config);
}
return self::$bonnie_api;
}
/**
* Hook to append the message history dialog template to the mail view
*/
function bonnie_render_page($p)
{
if (($p['template'] === 'mail' || $p['template'] === 'message') && !$p['kolab-audittrail']) {
// append a template for the audit trail dialog
$this->api->output->add_footer(
html::div(array('id' => 'mailmessagehistory', 'class' => 'uidialog', 'aria-hidden' => 'true', 'style' => 'display:none'),
self::object_changelog_table(array('class' => 'records-table changelog-table'))
)
);
$this->api->output->set_env('kolab_audit_trail', true);
$p['kolab-audittrail'] = true;
}
return $p;
}
/**
* Handler for message audit trail changelog requests
*/
public function message_changelog()
{
if (!self::$bonnie_api) {
return false;
}
$rcmail = rcube::get_instance();
$msguid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST, true);
$mailbox = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
$result = $msguid && $mailbox ? self::$bonnie_api->changelog('mail', null, $mailbox, $msguid) : null;
if (is_array($result)) {
if (is_array($result['changes'])) {
$dtformat = $rcmail->config->get('date_format') . ' ' . $rcmail->config->get('time_format');
array_walk($result['changes'], function(&$change) use ($dtformat, $rcmail) {
if ($change['date']) {
$dt = rcube_utils::anytodatetime($change['date']);
if ($dt instanceof DateTime) {
$change['date'] = $rcmail->format_date($dt, $dtformat);
}
}
});
}
$this->api->output->command('plugin.message_render_changelog', $result['changes']);
}
else {
$this->api->output->command('plugin.message_render_changelog', false);
}
$this->api->output->send();
}
/**
* Wrapper function to load and initalize the HTTP_Request2 Object
*
* @param string|Net_Url2 Request URL
* @param string Request method ('OPTIONS','GET','HEAD','POST','PUT','DELETE','TRACE','CONNECT')
* @param array Configuration for this Request instance, that will be merged
* with default configuration
*
* @return HTTP_Request2 Request object
*/
public static function http_request($url = '', $method = 'GET', $config = array())
{
$rcube = rcube::get_instance();
$http_config = (array) $rcube->config->get('kolab_http_request');
// deprecated configuration options
if (empty($http_config)) {
foreach (array('ssl_verify_peer', 'ssl_verify_host') as $option) {
$value = $rcube->config->get('kolab_' . $option, true);
if (is_bool($value)) {
$http_config[$option] = $value;
}
}
}
if (!empty($config)) {
$http_config = array_merge($http_config, $config);
}
// force CURL adapter, this allows to handle correctly
// compressed responses with SplObserver registered (kolab_files) (#4507)
$http_config['adapter'] = 'HTTP_Request2_Adapter_Curl';
$key = md5(serialize($http_config));
if (!($request = self::$http_requests[$key])) {
// load HTTP_Request2
require_once 'HTTP/Request2.php';
try {
$request = new HTTP_Request2();
$request->setConfig($http_config);
}
catch (Exception $e) {
rcube::raise_error($e, true, true);
}
// proxy User-Agent string
$request->setHeader('user-agent', $_SERVER['HTTP_USER_AGENT']);
self::$http_requests[$key] = $request;
}
// cleanup
try {
$request->setBody('');
$request->setUrl($url);
$request->setMethod($method);
}
catch (Exception $e) {
rcube::raise_error($e, true, true);
}
return $request;
}
/**
* Table oultine for object changelog display
*/
public static function object_changelog_table($attrib = array())
{
$rcube = rcube::get_instance();
$attrib += array('domain' => 'libkolab');
$table = new html_table(array('cols' => 5, 'border' => 0, 'cellspacing' => 0));
$table->add_header('diff', '');
$table->add_header('revision', $rcube->gettext('revision', $attrib['domain']));
$table->add_header('date', $rcube->gettext('date', $attrib['domain']));
$table->add_header('user', $rcube->gettext('user', $attrib['domain']));
$table->add_header('operation', $rcube->gettext('operation', $attrib['domain']));
$table->add_header('actions', '&nbsp;');
$rcube->output->add_label(
'libkolab.showrevision',
'libkolab.actionreceive',
'libkolab.actionappend',
'libkolab.actionmove',
'libkolab.actiondelete',
'libkolab.actionread',
'libkolab.actionflagset',
'libkolab.actionflagclear',
'libkolab.objectchangelog',
'close'
);
return $table->show($attrib);
}
/**
* Wrapper function for generating a html diff using the FineDiff class by Raymond Hill
*/
public static function html_diff($from, $to, $is_html = null)
{
// auto-detect text/html format
if ($is_html === null) {
$from_html = (preg_match('/<(html|body)(\s+[a-z]|>)/', $from, $m) && strpos($from, '</'.$m[1].'>') > 0);
$to_html = (preg_match('/<(html|body)(\s+[a-z]|>)/', $to, $m) && strpos($to, '</'.$m[1].'>') > 0);
$is_html = $from_html || $to_html;
// ensure both parts are of the same format
if ($is_html && !$from_html) {
$converter = new rcube_text2html($from, false, array('wrap' => true));
$from = $converter->get_html();
}
if ($is_html && !$to_html) {
$converter = new rcube_text2html($to, false, array('wrap' => true));
$to = $converter->get_html();
}
}
// compute diff from HTML
if ($is_html) {
include_once __dir__ . '/vendor/Caxy/HtmlDiff/Match.php';
include_once __dir__ . '/vendor/Caxy/HtmlDiff/Operation.php';
include_once __dir__ . '/vendor/Caxy/HtmlDiff/HtmlDiff.php';
// replace data: urls with a transparent image to avoid memory problems
$from = preg_replace('/src="data:image[^"]+/', 'src="data:image/gif;base64,R0lGODlhAQABAPAAAOjq6gAAACH/C1hNUCBEYXRhWE1QAT8AIfkEBQAAAAAsAAAAAAEAAQAAAgJEAQA7', $from);
$to = preg_replace('/src="data:image[^"]+/', 'src="data:image/gif;base64,R0lGODlhAQABAPAAAOjq6gAAACH/C1hNUCBEYXRhWE1QAT8AIfkEBQAAAAAsAAAAAAEAAQAAAgJEAQA7', $to);
$diff = new Caxy\HtmlDiff\HtmlDiff($from, $to);
$diffhtml = $diff->build();
// remove empty inserts (from tables)
return preg_replace('!<ins class="diff\w+">\s*</ins>!Uims', '', $diffhtml);
}
else {
include_once __dir__ . '/vendor/finediff.php';
$diff = new FineDiff($from, $to, FineDiff::$wordGranularity);
return $diff->renderDiffToHTML();
}
}
/**
* Return a date() format string to render identifiers for recurrence instances
*
* @param array Hash array with event properties
* @return string Format string
*/
public static function recurrence_id_format($event)
{
return $event['allday'] ? 'Ymd' : 'Ymd\THis';
}
}

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