enigma_ui.php
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enigma_ui.php
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	<?php
	/*
	+-------------------------------------------------------------------------+
	\| User Interface for the Enigma Plugin \|
	\| \|
	\| This program is free software; you can redistribute it and/or modify \|
	\| it under the terms of the GNU General Public License version 2 \|
	\| as published by the Free Software Foundation. \|
	\| \|
	\| 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 General Public License for more details. \|
	\| \|
	\| You should have received a copy of the GNU General Public License along \|
	\| with this program; if not, write to the Free Software Foundation, Inc., \|
	\| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. \|
	\| \|
	+-------------------------------------------------------------------------+
	\| Author: Aleksander Machniak <alec@alec.pl> \|
	+-------------------------------------------------------------------------+
	*/

	class enigma_ui
	{
	private $rc;
	private $enigma;
	private $home;
	private $css_added;
	private $data;


	function __construct($enigma_plugin, $home='')
	{
	$this->enigma = $enigma_plugin;
	$this->rc = $enigma_plugin->rc;
	// we cannot use $enigma_plugin->home here
	$this->home = $home;
	}

	/**
	* UI initialization and requests handlers.
	*
	* @param string Preferences section
	*/
	function init($section='')
	{
	$this->enigma->include_script('enigma.js');

	// Enigma actions
	if ($this->rc->action == 'plugin.enigma') {
	$action = rcube_utils::get_input_value('_a', rcube_utils::INPUT_GPC);

	switch ($action) {
	case 'keyedit':
	$this->key_edit();
	break;
	case 'keyimport':
	$this->key_import();
	break;
	case 'keysearch':
	case 'keylist':
	$this->key_list();
	break;
	case 'keyinfo':
	default:
	$this->key_info();
	}
	}
	// Message composing UI
	else if ($this->rc->action == 'compose') {
	$this->compose_ui();
	}
	// Preferences UI
	else { // if ($this->rc->action == 'edit-prefs') {
	if ($section == 'enigmacerts') {
	$this->rc->output->add_handlers(array(
	'keyslist' => array($this, 'tpl_certs_list'),
	'keyframe' => array($this, 'tpl_cert_frame'),
	'countdisplay' => array($this, 'tpl_certs_rowcount'),
	'searchform' => array($this->rc->output, 'search_form'),
	));
	$this->rc->output->set_pagetitle($this->enigma->gettext('enigmacerts'));
	$this->rc->output->send('enigma.certs');
	}
	else {
	$this->rc->output->add_handlers(array(
	'keyslist' => array($this, 'tpl_keys_list'),
	'keyframe' => array($this, 'tpl_key_frame'),
	'countdisplay' => array($this, 'tpl_keys_rowcount'),
	'searchform' => array($this->rc->output, 'search_form'),
	));
	$this->rc->output->set_pagetitle($this->enigma->gettext('enigmakeys'));
	$this->rc->output->send('enigma.keys');
	}
	}
	}

	/**
	* Adds CSS style file to the page header.
	*/
	function add_css()
	{
	if ($this->css_loaded)
	return;

	$skin = $this->rc->config->get('skin');
	if (!file_exists($this->home . "/skins/$skin/enigma.css"))
	$skin = 'default';

	$this->enigma->include_stylesheet("skins/$skin/enigma.css");
	$this->css_added = true;
	}

	/**
	* Template object for key info/edit frame.
	*
	* @param array Object attributes
	*
	* @return string HTML output
	*/
	function tpl_key_frame($attrib)
	{
	if (!$attrib['id']) {
	$attrib['id'] = 'rcmkeysframe';
	}

	$attrib['name'] = $attrib['id'];

	$this->rc->output->set_env('contentframe', $attrib['name']);
	$this->rc->output->set_env('blankpage', $attrib['src'] ?
	$this->rc->output->abs_url($attrib['src']) : 'program/resources/blank.gif');

	return $this->rc->output->frame($attrib);
	}

	/**
	* Template object for list of keys.
	*
	* @param array Object attributes
	*
	* @return string HTML content
	*/
	function tpl_keys_list($attrib)
	{
	// add id to message list table if not specified
	if (!strlen($attrib['id'])) {
	$attrib['id'] = 'rcmenigmakeyslist';
	}

	// define list of cols to be displayed
	$a_show_cols = array('name');

	// create XHTML table
	$out = $this->rc->table_output($attrib, array(), $a_show_cols, 'id');

	// set client env
	$this->rc->output->add_gui_object('keyslist', $attrib['id']);
	$this->rc->output->include_script('list.js');

	// add some labels to client
	$this->rc->output->add_label('enigma.keyconfirmdelete');

	return $out;
	}

	/**
	* Key listing (and searching) request handler
	*/
	private function key_list()
	{
	$this->enigma->load_engine();

	$pagesize = $this->rc->config->get('pagesize', 100);
	$page = max(intval(rcube_utils::get_input_value('_p', rcube_utils::INPUT_GPC)), 1);
	$search = rcube_utils::get_input_value('_q', rcube_utils::INPUT_GPC);

	// define list of cols to be displayed
	// $a_show_cols = array('name');

	// Get the list
	$list = $this->enigma->engine->list_keys($search);

	if ($list && ($list instanceof enigma_error))
	$this->rc->output->show_message('enigma.keylisterror', 'error');
	else if (empty($list))
	$this->rc->output->show_message('enigma.nokeysfound', 'notice');
	else {
	if (is_array($list)) {
	// Save the size
	$listsize = count($list);

	// Sort the list by key (user) name
	usort($list, array('enigma_key', 'cmp'));

	// Slice current page
	$list = array_slice($list, ($page - 1) * $pagesize, $pagesize);

	$size = count($list);

	// Add rows
	foreach ($list as $key) {
	$this->rc->output->command('enigma_add_list_row',
	array('name' => rcube::Q($key->name), 'id' => $key->id));
	}
	}
	}

	$this->rc->output->set_env('search_request', $search);
	$this->rc->output->set_env('pagecount', ceil($listsize/$pagesize));
	$this->rc->output->set_env('current_page', $page);
	$this->rc->output->command('set_rowcount',
	$this->get_rowcount_text($listsize, $size, $page));

	$this->rc->output->send();
	}

	/**
	* Template object for list records counter.
	*
	* @param array Object attributes
	*
	* @return string HTML output
	*/
	function tpl_keys_rowcount($attrib)
	{
	if (!$attrib['id'])
	$attrib['id'] = 'rcmcountdisplay';

	$this->rc->output->add_gui_object('countdisplay', $attrib['id']);

	return html::span($attrib, $this->get_rowcount_text());
	}

	/**
	* Returns text representation of list records counter
	*/
	private function get_rowcount_text($all=0, $curr_count=0, $page=1)
	{
	if (!$curr_count)
	$out = $this->enigma->gettext('nokeysfound');
	else {
	$pagesize = $this->rc->config->get('pagesize', 100);
	$first = ($page - 1) * $pagesize;

	$out = $this->enigma->gettext(array(
	'name' => 'keysfromto',
	'vars' => array(
	'from' => $first + 1,
	'to' => $first + $curr_count,
	'count' => $all)
	));
	}

	return $out;
	}

	/**
	* Key information page handler
	*/
	private function key_info()
	{
	$id = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GET);

	$this->enigma->load_engine();
	$res = $this->enigma->engine->get_key($id);

	if ($res instanceof enigma_key)
	$this->data = $res;
	else { // error
	$this->rc->output->show_message('enigma.keyopenerror', 'error');
	$this->rc->output->command('parent.enigma_loadframe');
	$this->rc->output->send('iframe');
	}

	$this->rc->output->add_handlers(array(
	'keyname' => array($this, 'tpl_key_name'),
	'keydata' => array($this, 'tpl_key_data'),
	));

	$this->rc->output->set_pagetitle($this->enigma->gettext('keyinfo'));
	$this->rc->output->send('enigma.keyinfo');
	}

	/**
	* Template object for key name
	*/
	function tpl_key_name($attrib)
	{
	return rcube::Q($this->data->name);
	}

	/**
	* Template object for key information page content
	*/
	function tpl_key_data($attrib)
	{
	$out = '';
	$table = new html_table(array('cols' => 2));

	// Key user ID
	$table->add('title', $this->enigma->gettext('keyuserid'));
	$table->add(null, rcube::Q($this->data->name));
	// Key ID
	$table->add('title', $this->enigma->gettext('keyid'));
	$table->add(null, $this->data->subkeys[0]->get_short_id());
	// Key type
	$keytype = $this->data->get_type();
	if ($keytype == enigma_key::TYPE_KEYPAIR)
	$type = $this->enigma->gettext('typekeypair');
	else if ($keytype == enigma_key::TYPE_PUBLIC)
	$type = $this->enigma->gettext('typepublickey');
	$table->add('title', $this->enigma->gettext('keytype'));
	$table->add(null, $type);
	// Key fingerprint
	$table->add('title', $this->enigma->gettext('fingerprint'));
	$table->add(null, $this->data->subkeys[0]->get_fingerprint());

	$out .= html::tag('fieldset', null,
	html::tag('legend', null,
	$this->enigma->gettext('basicinfo')) . $table->show($attrib));

	// Subkeys
	$table = new html_table(array('cols' => 6));
	// Columns: Type, ID, Algorithm, Size, Created, Expires

	$out .= html::tag('fieldset', null,
	html::tag('legend', null,
	$this->enigma->gettext('subkeys')) . $table->show($attrib));

	// Additional user IDs
	$table = new html_table(array('cols' => 2));
	// Columns: User ID, Validity

	$out .= html::tag('fieldset', null,
	html::tag('legend', null,
	$this->enigma->gettext('userids')) . $table->show($attrib));

	return $out;
	}

	/**
	* Key import page handler
	*/
	private function key_import()
	{
	// Import process
	if ($_FILES['_file']['tmp_name'] && is_uploaded_file($_FILES['_file']['tmp_name'])) {
	$this->enigma->load_engine();
	$result = $this->enigma->engine->import_key($_FILES['_file']['tmp_name'], true);

	if (is_array($result)) {
	// reload list if any keys has been added
	if ($result['imported']) {
	$this->rc->output->command('parent.enigma_list', 1);
	}
	else
	$this->rc->output->command('parent.enigma_loadframe');

	$this->rc->output->show_message('enigma.keysimportsuccess', 'confirmation',
	array('new' => $result['imported'], 'old' => $result['unchanged']));

	$this->rc->output->send('iframe');
	}
	else
	$this->rc->output->show_message('enigma.keysimportfailed', 'error');
	}
	else if ($err = $_FILES['_file']['error']) {
	if ($err == UPLOAD_ERR_INI_SIZE \|\| $err == UPLOAD_ERR_FORM_SIZE) {
	$this->rc->output->show_message('filesizeerror', 'error',
	array('size' => $this->rc->show_bytes(parse_bytes(ini_get('upload_max_filesize')))));
	} else {
	$this->rc->output->show_message('fileuploaderror', 'error');
	}
	}

	$this->rc->output->add_handlers(array(
	'importform' => array($this, 'tpl_key_import_form'),
	));

	$this->rc->output->set_pagetitle($this->enigma->gettext('keyimport'));
	$this->rc->output->send('enigma.keyimport');
	}

	/**
	* Template object for key import (upload) form
	*/
	function tpl_key_import_form($attrib)
	{
	$attrib += array('id' => 'rcmKeyImportForm');

	$upload = new html_inputfield(array('type' => 'file', 'name' => '_file',
	'id' => 'rcmimportfile', 'size' => 30));

	$form = html::p(null,
	rcube::Q($this->enigma->gettext('keyimporttext'), 'show')
	. html::br() . html::br() . $upload->show()
	);

	$this->rc->output->add_label('selectimportfile', 'importwait');
	$this->rc->output->add_gui_object('importform', $attrib['id']);

	$out = $this->rc->output->form_tag(array(
	'action' => $this->rc->url(array('action' => 'plugin.enigma', 'a' => 'keyimport')),
	'method' => 'post',
	'enctype' => 'multipart/form-data') + $attrib,
	$form);

	return $out;
	}

	private function compose_ui()
	{
	// Options menu button
	// @TODO: make this work with non-default skins
	$this->enigma->add_button(array(
	'name' => 'enigmamenu',
	'imagepas' => 'skins/default/enigma.png',
	'imageact' => 'skins/default/enigma.png',
	'onclick' => "rcmail_ui.show_popup('enigmamenu', true); return false",
	'title' => 'securityoptions',
	'domain' => 'enigma',
	), 'toolbar');

	// Options menu contents
	$this->enigma->add_hook('render_page', array($this, 'compose_menu'));
	}

	function compose_menu($p)
	{
	$menu = new html_table(array('cols' => 2));
	$chbox = new html_checkbox(array('value' => 1));

	$menu->add(null, html::label(array('for' => 'enigmadefaultopt'),
	rcube::Q($this->enigma->gettext('identdefault'))));
	$menu->add(null, $chbox->show(1, array('name' => '_enigma_default', 'id' => 'enigmadefaultopt')));

	$menu->add(null, html::label(array('for' => 'enigmasignopt'),
	rcube::Q($this->enigma->gettext('signmsg'))));
	$menu->add(null, $chbox->show(1, array('name' => '_enigma_sign', 'id' => 'enigmasignopt')));

	$menu->add(null, html::label(array('for' => 'enigmacryptopt'),
	rcube::Q($this->enigma->gettext('encryptmsg'))));
	$menu->add(null, $chbox->show(1, array('name' => '_enigma_crypt', 'id' => 'enigmacryptopt')));

	$menu = html::div(array('id' => 'enigmamenu', 'class' => 'popupmenu'),
	$menu->show());

	$p['content'] = preg_replace('/(<form name="form"[^>]+>)/i', '\\1'."\n$menu", $p['content']);

	return $p;

	}

	}

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