152 lines
4.4 KiB
PHP
152 lines
4.4 KiB
PHP
<?php
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/**
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* Name: Secure Mail
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* Description: Send notification mail encrypted with user-defined public GPG key
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* Version: 2.0
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* Author: Fabio Comuni <http://kirgroup.com/profile/fabrixxm>
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*/
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use Friendica\Addon\securemail\SecureTestEmail;
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use Friendica\App;
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use Friendica\Core\Hook;
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use Friendica\Core\Logger;
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use Friendica\Core\Renderer;
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use Friendica\DI;
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require_once __DIR__ . '/vendor/autoload.php';
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function securemail_install()
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{
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Hook::register('addon_settings', 'addon/securemail/securemail.php', 'securemail_settings');
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Hook::register('addon_settings_post', 'addon/securemail/securemail.php', 'securemail_settings_post');
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Hook::register('emailer_send_prepare', 'addon/securemail/securemail.php', 'securemail_emailer_send_prepare');
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Logger::log('installed securemail');
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}
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function securemail_uninstall()
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{
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Hook::unregister('addon_settings', 'addon/securemail/securemail.php', 'securemail_settings');
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Hook::unregister('addon_settings_post', 'addon/securemail/securemail.php', 'securemail_settings_post');
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Hook::unregister('emailer_send_prepare', 'addon/securemail/securemail.php', 'securemail_emailer_send_prepare');
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Logger::log('removed securemail');
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}
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/**
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* @brief Build user settings form
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*
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* @link https://github.com/friendica/friendica/blob/develop/doc/Addons.md#addon_settings 'addon_settings' hook
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*
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* @param App $a App instance
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* @param string $s output html
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*
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* @see App
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*/
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function securemail_settings(App &$a, &$s)
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{
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if (!local_user()) {
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return;
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}
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$enable = intval(DI::pConfig()->get(local_user(), 'securemail', 'enable'));
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$publickey = DI::pConfig()->get(local_user(), 'securemail', 'pkey');
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$t = Renderer::getMarkupTemplate('admin.tpl', 'addon/securemail/');
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$s .= Renderer::replaceMacros($t, [
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'$title' => DI::l10n()->t('"Secure Mail" Settings'),
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'$submit' => DI::l10n()->t('Save Settings'),
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'$test' => DI::l10n()->t('Save and send test'), //NOTE: update also in 'post'
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'$enable' => ['securemail-enable', DI::l10n()->t('Enable Secure Mail'), $enable, ''],
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'$publickey' => ['securemail-pkey', DI::l10n()->t('Public key'), $publickey, DI::l10n()->t('Your public PGP key, ascii armored format'), 'rows="10"']
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]);
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}
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/**
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* @brief Handle data from user settings form
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*
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* @link https://github.com/friendica/friendica/blob/develop/doc/Addons.md#addon_settings_post 'addon_settings_post' hook
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*
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* @param App $a App instance
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* @param array $b hook data
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*
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* @see App
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*/
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function securemail_settings_post(App &$a, array &$b)
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{
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if (!local_user()) {
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return;
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}
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if ($_POST['securemail-submit']) {
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DI::pConfig()->set(local_user(), 'securemail', 'pkey', trim($_POST['securemail-pkey']));
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$enable = (!empty($_POST['securemail-enable']) ? 1 : 0);
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DI::pConfig()->set(local_user(), 'securemail', 'enable', $enable);
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info(DI::l10n()->t('Secure Mail Settings saved.') . EOL);
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if ($_POST['securemail-submit'] == DI::l10n()->t('Save and send test')) {
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$res = DI::emailer()->send(new SecureTestEmail(DI::app(), DI::config(), DI::pConfig(), DI::baseUrl()));
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// revert to saved value
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DI::pConfig()->set(local_user(), 'securemail', 'enable', $enable);
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if ($res) {
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info(DI::l10n()->t('Test email sent') . EOL);
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} else {
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notice(DI::l10n()->t('There was an error sending the test email') . EOL);
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}
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}
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}
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}
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/**
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* @brief Encrypt notification emails text
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*
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* @link https://github.com/friendica/friendica/blob/develop/doc/Addons.md#emailer_send_prepare 'emailer_send_prepare' hook
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*
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* @param App $a App instance
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* @param array $b hook data
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*
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* @see App
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*/
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function securemail_emailer_send_prepare(App &$a, array &$b)
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{
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if (empty($b['uid'])) {
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return;
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}
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$uid = $b['uid'];
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$enable_checked = DI::pConfig()->get($uid, 'securemail', 'enable');
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if (!$enable_checked) {
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return;
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}
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$public_key_ascii = DI::pConfig()->get($uid, 'securemail', 'pkey');
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preg_match('/-----BEGIN ([A-Za-z ]+)-----/', $public_key_ascii, $matches);
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$marker = empty($matches[1]) ? 'MESSAGE' : $matches[1];
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$public_key = OpenPGP::unarmor($public_key_ascii, $marker);
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$key = OpenPGP_Message::parse($public_key);
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$data = new OpenPGP_LiteralDataPacket($b['textVersion'], [
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'format' => 'u',
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'filename' => 'encrypted.gpg'
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]);
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$encrypted = OpenPGP_Crypt_Symmetric::encrypt($key, new OpenPGP_Message([$data]));
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$armored_encrypted = wordwrap(
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OpenPGP::enarmor($encrypted->to_bytes(), 'PGP MESSAGE'),
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64,
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"\n",
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true
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);
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$b['textVersion'] = $armored_encrypted;
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$b['htmlVersion'] = null;
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}
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