friendica-addons/securemail/securemail.php

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<?php
/**
* Name: Secure Mail
* Description: Send notification mail encrypted with user-defined public GPG key
* Version: 2.0
* Author: Fabio Comuni <http://kirgroup.com/profile/fabrixxm>
*/
require_once "include/Emailer.php";
/* because the fraking openpgp-php is in composer, require libs in composer
* and then don't use autoloader to load classes... */
$path = __DIR__."/vendor/phpseclib/phpseclib/phpseclib/";
set_include_path(get_include_path() . PATH_SEPARATOR . $path);
/* so, we don't use the autoloader and include what we need */
$path = __DIR__."/vendor/singpolyma/openpgp-php/lib";
set_include_path(get_include_path() . PATH_SEPARATOR . $path);
require_once "openpgp.php";
require_once "openpgp_crypt_symmetric.php";
function securemail_install() {
register_hook('plugin_settings', 'addon/securemail/securemail.php', 'securemail_settings');
register_hook('plugin_settings_post', 'addon/securemail/securemail.php', 'securemail_settings_post');
register_hook('emailer_send_prepare', 'addon/securemail/securemail.php', 'securemail_emailer_send_prepare');
logger("installed securemail");
}
function securemail_uninstall() {
unregister_hook('plugin_settings', 'addon/securemail/securemail.php', 'securemail_settings');
unregister_hook('plugin_settings_post', 'addon/securemail/securemail.php', 'securemail_settings_post');
unregister_hook('emailer_send_prepare', 'addon/securemail/securemail.php', 'securemail_emailer_send_prepare');
logger("removed securemail");
}
function securemail_settings(&$a,&$s){
if(! local_user()) {
return;
}
$enable = intval(get_pconfig(local_user(),'securemail','enable'));
$publickey = get_pconfig(local_user(),'securemail','pkey');
$t = get_markup_template( "admin.tpl", "addon/securemail/" );
$s = replace_macros($t, array(
'$title' => t('"Secure Mail" Settings'),
'$submit' => t('Save Settings'),
'$test' => t('Save and send test'), //NOTE: update also in 'post'
'$enable' => array('securemail-enable', t('Enable Secure Mail'), $enable, ""),
'$publickey' => array('securemail-pkey', t('Public key'), $publickey, t("Your public PGP key, ascii armored format"), "rows='10'")
));
return;
}
function securemail_settings_post(&$a, &$b){
if(! local_user()) {
return;
}
if($_POST['securemail-submit']) {
set_pconfig(local_user(),'securemail','pkey',trim($_POST['securemail-pkey']));
$enable = ((x($_POST,'securemail-enable')) ? 1 : 0);
set_pconfig(local_user(),'securemail','enable', $enable);
info( t('Secure Mail Settings saved.') . EOL);
if ($_POST['securemail-submit'] == t('Save and send test')) {
$sitename = $a->config['sitename'];
$hostname = $a->get_hostname();
if (strpos($hostname, ':')){
$hostname = substr($hostname, 0, strpos($hostname, ':'));
}
$sender_email = $a->config['sender_email'];
if (empty($sender_email)){
$sender_email = 'noreply@'.$hostname;
}
$subject = "Friendica - Secure Mail - Test";
$message = "This is a test message from your Friendica Secure Mail addon.\n\nBye!";
$params = array(
'uid' => local_user(),
'fromName' => $sitename,
'fromEmail' => $sender_email,
'toEmail' => $a->user['email'],
'messageSubject' => $subject,
'htmlVersion' => "<p>{$message}</p>",
'textVersion' => $message,
);
// enable addon for test
set_pconfig(local_user(),'securemail','enable', 1);
$res = Emailer::send($params);
// revert to saved value
set_pconfig(local_user(),'securemail','enable', $enable);
if ($res) {
info( t("Test email sent") . EOL);
} else {
notice( t("There was an error sending the test email") .EOL);
}
}
}
}
function securemail_emailer_send_prepare(&$a, &$b) {
if (!x($b,'uid')) {
return;
}
$uid = $b['uid'];
$enable_checked = get_pconfig($uid,'securemail','enable');
if (!$enable_checked) {
return;
}
$public_key_ascii = get_pconfig($uid,'securemail','pkey');
preg_match('/-----BEGIN ([A-Za-z ]+)-----/', $public_key_ascii, $matches);
$marker = (empty($matches[1])) ? 'MESSAGE' : $matches[1];
$public_key = OpenPGP::unarmor($public_key_ascii, $marker);
$key = OpenPGP_Message::parse($public_key);
$data = new OpenPGP_LiteralDataPacket($b['textVersion'], array(
'format' => 'u',
'filename' => 'encrypted.gpg'
));
$encrypted = OpenPGP_Crypt_Symmetric::encrypt($key, new OpenPGP_Message(array($data)));
$armored_encrypted = wordwrap(OpenPGP::enarmor($encrypted->to_bytes(), "PGP MESSAGE"), 64, "\n", true);
$b['textVersion'] = $armored_encrypted;
$b['htmlVersion'] = null;
}
/**
* add addon composer autoloader maps to system autoloader
function securemail_autoloader() {
$loader = require dirname(dirname(__DIR__))."/vendor/autoload.php";
$map = require __DIR__ . '/vendor/composer/autoload_namespaces.php';
foreach ($map as $namespace => $path) {
$loader->set($namespace, $path);
}
$map = require __DIR__ . '/vendor/composer/autoload_psr4.php';
foreach ($map as $namespace => $path) {
$loader->setPsr4($namespace, $path);
}
$classMap = require __DIR__ . '/vendor/composer/autoload_classmap.php';
if ($classMap) {
$loader->addClassMap($classMap);
}
}
securemail_autoloader();
*/