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enigma.php
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enigma.php
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<?php
/**
+-------------------------------------------------------------------------+
| Enigma Plugin for Roundcube |
| |
| Copyright (C) 2010-2015 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. |
| |
+-------------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
+-------------------------------------------------------------------------+
*/
/**
* This class contains only hooks and action handlers.
* Most plugin logic is placed in enigma_engine and enigma_ui classes.
*/
class enigma extends rcube_plugin
{
public $task = 'mail|settings|cli';
public $rc;
public $engine;
public $ui;
private $env_loaded = false;
/**
* Plugin initialization.
*/
function init()
{
$this->rc = rcube::get_instance();
if ($this->rc->task == 'mail') {
// message parse/display hooks
$this->add_hook('message_part_structure', array($this, 'part_structure'));
$this->add_hook('message_part_body', array($this, 'part_body'));
$this->add_hook('message_body_prefix', array($this, 'status_message'));
$this->register_action('plugin.enigmaimport', array($this, 'import_file'));
$this->register_action('plugin.enigmakeys', array($this, 'preferences_ui'));
// load the Enigma plugin configuration
$this->load_config();
$enabled = $this->rc->config->get('enigma_encryption', true);
// message displaying
if ($this->rc->action == 'show' || $this->rc->action == 'preview' || $this->rc->action == 'print') {
$this->add_hook('message_load', array($this, 'message_load'));
$this->add_hook('template_object_messagebody', array($this, 'message_output'));
}
// message composing
else if ($enabled && $this->rc->action == 'compose') {
$this->add_hook('message_compose_body', array($this, 'message_compose'));
$this->load_ui();
$this->ui->init();
}
// message sending (and draft storing)
else if ($enabled && $this->rc->action == 'send') {
$this->add_hook('message_ready', array($this, 'message_ready'));
}
$this->password_handler();
}
else if ($this->rc->task == 'settings') {
// add hooks for Enigma settings
$this->add_hook('settings_actions', array($this, 'settings_actions'));
$this->add_hook('preferences_sections_list', array($this, 'preferences_sections_list'));
$this->add_hook('preferences_list', array($this, 'preferences_list'));
$this->add_hook('preferences_save', array($this, 'preferences_save'));
$this->add_hook('identity_form', array($this, 'identity_form'));
// register handler for keys/certs management
$this->register_action('plugin.enigmakeys', array($this, 'preferences_ui'));
// $this->register_action('plugin.enigmacerts', array($this, 'preferences_ui'));
$this->load_ui();
if (empty($_REQUEST['_framed']) || strpos($this->rc->action, 'plugin.enigma') === 0) {
$this->ui->add_css();
}
$this->password_handler();
}
else if ($this->rc->task == 'cli') {
$this->add_hook('user_delete_commit', array($this, 'user_delete'));
}
$this->add_hook('refresh', array($this, 'refresh'));
}
/**
* Plugin environment initialization.
*/
function load_env()
{
if ($this->env_loaded) {
return;
}
$this->env_loaded = true;
// Add include path for Enigma classes and drivers
$include_path = $this->home . '/lib' . PATH_SEPARATOR;
$include_path .= ini_get('include_path');
set_include_path($include_path);
// load the Enigma plugin configuration
$this->load_config();
// include localization (if wasn't included before)
$this->add_texts('localization/');
}
/**
* Plugin UI initialization.
*/
function load_ui($all = false)
{
if (!$this->ui) {
// load config/localization
$this->load_env();
// Load UI
$this->ui = new enigma_ui($this, $this->home);
}
if ($all) {
$this->ui->add_css();
$this->ui->add_js();
}
}
/**
* Plugin engine initialization.
*/
function load_engine()
{
if ($this->engine) {
return $this->engine;
}
// load config/localization
$this->load_env();
return $this->engine = new enigma_engine($this);
}
/**
* Handler for message_part_structure hook.
* Called for every part of the message.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function part_structure($p)
{
$this->load_engine();
return $this->engine->part_structure($p);
}
/**
* Handler for message_part_body hook.
* Called to get body of a message part.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function part_body($p)
{
$this->load_engine();
return $this->engine->part_body($p);
}
/**
* Handler for settings_actions hook.
* Adds Enigma settings section into preferences.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function settings_actions($args)
{
// add labels
$this->add_texts('localization/');
// register as settings action
$args['actions'][] = array(
'action' => 'plugin.enigmakeys',
'class' => 'enigma keys',
'label' => 'enigmakeys',
'title' => 'enigmakeys',
'domain' => 'enigma',
);
/*
$args['actions'][] = array(
'action' => 'plugin.enigmacerts',
'class' => 'enigma certs',
'label' => 'enigmacerts',
'title' => 'enigmacerts',
'domain' => 'enigma',
);
*/
return $args;
}
/**
* Handler for preferences_sections_list hook.
* Adds Encryption settings section into preferences sections list.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function preferences_sections_list($p)
{
$p['list']['enigma'] = array(
'id' => 'enigma', 'section' => $this->gettext('encryption'),
);
return $p;
}
/**
* Handler for preferences_list hook.
* Adds options blocks into Enigma settings sections in Preferences.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function preferences_list($p)
{
if ($p['section'] != 'enigma') {
return $p;
}
$no_override = array_flip((array)$this->rc->config->get('dont_override'));
$p['blocks']['main']['name'] = $this->gettext('mainoptions');
if (!isset($no_override['enigma_encryption'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_encryption';
$input = new html_checkbox(array(
'name' => '_enigma_encryption',
'id' => $field_id,
'value' => 1,
));
$p['blocks']['main']['options']['enigma_encryption'] = array(
'title' => html::label($field_id, $this->gettext('supportencryption')),
'content' => $input->show(intval($this->rc->config->get('enigma_encryption'))),
);
}
if (!isset($no_override['enigma_signatures'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_signatures';
$input = new html_checkbox(array(
'name' => '_enigma_signatures',
'id' => $field_id,
'value' => 1,
));
$p['blocks']['main']['options']['enigma_signatures'] = array(
'title' => html::label($field_id, $this->gettext('supportsignatures')),
'content' => $input->show(intval($this->rc->config->get('enigma_signatures'))),
);
}
if (!isset($no_override['enigma_decryption'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_decryption';
$input = new html_checkbox(array(
'name' => '_enigma_decryption',
'id' => $field_id,
'value' => 1,
));
$p['blocks']['main']['options']['enigma_decryption'] = array(
'title' => html::label($field_id, $this->gettext('supportdecryption')),
'content' => $input->show(intval($this->rc->config->get('enigma_decryption'))),
);
}
if (!isset($no_override['enigma_sign_all'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_sign_all';
$input = new html_checkbox(array(
'name' => '_enigma_sign_all',
'id' => $field_id,
'value' => 1,
));
$p['blocks']['main']['options']['enigma_sign_all'] = array(
'title' => html::label($field_id, $this->gettext('signdefault')),
'content' => $input->show($this->rc->config->get('enigma_sign_all') ? 1 : 0),
);
}
if (!isset($no_override['enigma_encrypt_all'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_encrypt_all';
$input = new html_checkbox(array(
'name' => '_enigma_encrypt_all',
'id' => $field_id,
'value' => 1,
));
$p['blocks']['main']['options']['enigma_encrypt_all'] = array(
'title' => html::label($field_id, $this->gettext('encryptdefault')),
'content' => $input->show($this->rc->config->get('enigma_encrypt_all') ? 1 : 0),
);
}
if (!isset($no_override['enigma_attach_pubkey'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_attach_pubkey';
$input = new html_checkbox(array(
'name' => '_enigma_attach_pubkey',
'id' => $field_id,
'value' => 1,
));
$p['blocks']['main']['options']['enigma_attach_pubkey'] = array(
'title' => html::label($field_id, $this->gettext('attachpubkeydefault')),
'content' => $input->show($this->rc->config->get('enigma_attach_pubkey') ? 1 : 0),
);
}
if (!isset($no_override['enigma_password_time'])) {
if (!$p['current']) {
$p['blocks']['main']['content'] = true;
return $p;
}
$field_id = 'rcmfd_enigma_password_time';
$select = new html_select(array('name' => '_enigma_password_time', 'id' => $field_id));
foreach (array(1, 5, 10, 15, 30) as $m) {
$label = $this->gettext(array('name' => 'nminutes', 'vars' => array('m' => $m)));
$select->add($label, $m);
}
$select->add($this->gettext('wholesession'), 0);
$p['blocks']['main']['options']['enigma_password_time'] = array(
'title' => html::label($field_id, $this->gettext('passwordtime')),
'content' => $select->show(intval($this->rc->config->get('enigma_password_time'))),
);
}
return $p;
}
/**
* Handler for preferences_save hook.
* Executed on Enigma settings form submit.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function preferences_save($p)
{
if ($p['section'] == 'enigma') {
$p['prefs'] = array(
'enigma_signatures' => (bool) rcube_utils::get_input_value('_enigma_signatures', rcube_utils::INPUT_POST),
'enigma_decryption' => (bool) rcube_utils::get_input_value('_enigma_decryption', rcube_utils::INPUT_POST),
'enigma_encryption' => (bool) rcube_utils::get_input_value('_enigma_encryption', rcube_utils::INPUT_POST),
'enigma_sign_all' => (bool) rcube_utils::get_input_value('_enigma_sign_all', rcube_utils::INPUT_POST),
'enigma_encrypt_all' => (bool) rcube_utils::get_input_value('_enigma_encrypt_all', rcube_utils::INPUT_POST),
'enigma_attach_pubkey' => (bool) rcube_utils::get_input_value('_enigma_attach_pubkey', rcube_utils::INPUT_POST),
'enigma_password_time' => intval(rcube_utils::get_input_value('_enigma_password_time', rcube_utils::INPUT_POST)),
);
}
return $p;
}
/**
* Handler for keys/certs management UI template.
*/
function preferences_ui()
{
$this->load_ui();
$this->ui->init();
}
/**
* Handler for 'identity_form' plugin hook.
*
* This will list private keys matching this identity
* and add a link to enigma key management action.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function identity_form($p)
{
if (isset($p['form']['encryption']) && !empty($p['record']['identity_id'])) {
$content = '';
// find private keys for this identity
if ($p['record']['email']) {
$listing = array();
$engine = $this->load_engine();
$keys = (array)$engine->list_keys($p['record']['email']);
foreach ($keys as $key) {
if ($key->get_type() === enigma_key::TYPE_KEYPAIR) {
$listing[] = html::tag('li', null,
html::tag('span', 'identity', html::quote($key->name)) .
' ' .
html::tag('strong', 'uid', html::quote($key->id))
);
}
}
if (count($listing)) {
$content .= html::p(null, $this->gettext(array('name' => 'identitymatchingprivkeys', 'vars' => array('nr' => count($listing)))));
$content .= html::tag('ul', 'keylist', join('\n', $listing));
} else {
$content .= html::p(null, $this->gettext('identitynoprivkeys'));
}
}
// add button linking to enigma key management
$content .= html::p(
null,
html::a(
array(
'class' => 'button',
'href' => $this->rc->url(array('action' => 'plugin.enigmakeys')),
'target' => '_parent',
),
$this->gettext('managekeys'))
);
// rename class to avoid Mailvelope key management to kick in
$p['form']['encryption']['attrs'] = array('class' => 'enigma-identity-encryption');
// fill fieldset content with our stuff
$p['form']['encryption']['content'] = html::div('identity-encryption-block', $content);
}
return $p;
}
/**
* Handler for message_body_prefix hook.
* Called for every displayed (content) part of the message.
* Adds infobox about signature verification and/or decryption
* status above the body.
*
* @param array Original parameters
*
* @return array Modified parameters
*/
function status_message($p)
{
$this->load_ui();
return $this->ui->status_message($p);
}
/**
* Handler for message_load hook.
* Check message bodies and attachments for keys/certs.
*/
function message_load($p)
{
$this->load_ui();
return $this->ui->message_load($p);
}
/**
* Handler for template_object_messagebody hook.
* This callback function adds a box below the message content
* if there is a key/cert attachment available
*/
function message_output($p)
{
$this->load_ui();
return $this->ui->message_output($p);
}
/**
* Handler for attached keys/certs import
*/
function import_file()
{
$this->load_ui();
$this->ui->import_file();
}
/**
* Handle password submissions
*/
function password_handler()
{
$this->load_engine();
$this->engine->password_handler();
}
/**
* Handle message_ready hook (encryption/signing)
*/
function message_ready($p)
{
$this->load_ui();
return $this->ui->message_ready($p);
}
/**
* Handle message_compose_body hook
*/
function message_compose($p)
{
$this->load_ui();
return $this->ui->message_compose($p);
}
/**
* Handler for refresh hook.
*/
function refresh($p)
{
// calling enigma_engine constructor to remove passwords
// stored in session after expiration time
$this->load_engine();
return $p;
}
/**
* Handle delete_user_commit hook
*/
function user_delete($p)
{
$this->load_engine();
$p['abort'] = $p['abort'] || !$this->engine->delete_user_data($p['username']);
return $p;
}
}

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