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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Customised version of phpmailer for Moodle
 *
 * @package    core
 * @author     Dan Poltawski <talktodan@gmail.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

// PLEASE NOTE: we use the phpmailer class _unmodified_
// through the joys of OO. Distros are free to use their stock
// version of this file.

/**
 * Moodle Customised version of the PHPMailer class
 *
 * This class extends the stock PHPMailer class
 * in order to make sensible configuration choices,
 * and behave in a way which is friendly to moodle.
 *
 * @copyright 2009 Dan Poltawski <talktodan@gmail.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since     Moodle 2.0
 */
class moodle_phpmailer extends \PHPMailer\PHPMailer\PHPMailer {

    /**
     * Constructor - creates an instance of the PHPMailer class
     * with Moodle defaults.
     */
    public function __construct(){
        global $CFG;
< $this->Version = 'Moodle '.$CFG->version; // mailer version
$this->CharSet = 'UTF-8'; // MDL-52637: Disable the automatic TLS encryption added in v5.2.10 (9da56fc1328a72aa124b35b738966315c41ef5c6). $this->SMTPAutoTLS = false; if (!empty($CFG->smtpauthtype)) { $this->AuthType = $CFG->smtpauthtype;
> } > if ($this->AuthType == 'XOAUTH2') { > $this->process_oauth(); // Some MTAs may do double conversion of LF if CRLF used, CRLF is required line ending in RFC 822bis. > }
if (isset($CFG->mailnewline) and $CFG->mailnewline == 'CRLF') { parent::setLE("\r\n"); } else { parent::setLE("\n"); } } /** * Extended AddCustomHeader function in order to stop duplicate * message-ids * http://tracker.moodle.org/browse/MDL-3681 */ public function addCustomHeader($custom_header, $value = null) { if ($value === null and preg_match('/message-id:(.*)/i', $custom_header, $matches)) { $this->MessageID = trim($matches[1]); return true; } else if ($value !== null and strcasecmp($custom_header, 'message-id') === 0) { $this->MessageID = trim($value); return true; } else { return parent::addCustomHeader($custom_header, $value); } } /** * Use internal moodles own core_text to encode mimeheaders. * Fall back to phpmailers inbuilt functions if not */ public function encodeHeader($str, $position = 'text') { $encoded = core_text::encode_mimeheader($str, $this->CharSet); if ($encoded !== false) { if ($position === 'phrase') { // Escape special symbols in each line in the encoded string, join back together and enclose in quotes. $chunks = preg_split("/\\n/", $encoded); $chunks = array_map(function($chunk) { return addcslashes($chunk, "\0..\37\177\\\""); }, $chunks); return '"' . join(parent::getLE(), $chunks) . '"'; } return str_replace("\n", parent::getLE(), $encoded); } return parent::encodeHeader($str, $position); } /** * Replaced function to fix tz bug: * http://tracker.moodle.org/browse/MDL-12596 */ public static function rfcDate() { $tz = date('Z'); $tzs = ($tz < 0) ? '-' : '+'; $tz = abs($tz); $tz = (($tz - ($tz%3600) )/3600)*100 + ($tz%3600)/60; // fixed tz bug $result = sprintf("%s %s%04d", date('D, j M Y H:i:s'), $tzs, $tz); return $result; } /** * Sends this mail. * * This function has been overridden to facilitate unit testing. * * @return bool */ public function postSend() { // Now ask phpunit if it wants to catch this message. if (PHPUNIT_TEST) { if (!phpunit_util::is_redirecting_phpmailer()) { debugging('Unit tests must not send real emails! Use $this->redirectEmails()'); return true; } $mail = new stdClass(); $mail->header = $this->MIMEHeader; $mail->body = $this->MIMEBody; $mail->subject = $this->Subject; $mail->from = $this->From; $mail->to = $this->to[0][0]; phpunit_util::phpmailer_sent($mail); return true; } else { return parent::postSend();
> } } > } } > } > /** > * Config the PHPMailer to use OAUTH if necessary. > */ > private function process_oauth(): void { > global $CFG; > > require_once($CFG->libdir . '/phpmailer/moodle_phpmailer_oauth.php'); > if (!empty($CFG->smtpoauthservice)) { > // Get the issuer. > $issuer = \core\oauth2\api::get_issuer($CFG->smtpoauthservice); > // Validate the issuer and check if it is enabled or not. > if ($issuer && $issuer->get('enabled')) { > // Get the OAuth Client. > if ($oauthclient = \core\oauth2\api::get_system_oauth_client($issuer)) { > $oauth = new moodle_phpmailer_oauth([ > 'provider' => $oauthclient, > 'clientId' => $oauthclient->get_clientid(), > 'clientSecret' => $oauthclient->get_clientsecret(), > 'refreshToken' => $oauthclient->get_refresh_token(), > 'userName' => $CFG->smtpuser, > ]); > // Set the OAuth. > $this->setOAuth($oauth); > } > }