2294 lines
66 KiB
PHP
2294 lines
66 KiB
PHP
<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2019 - 2022, CodeIgniter Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @copyright Copyright (c) 2019 - 2022, CodeIgniter Foundation (https://codeigniter.com/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') or exit('No direct script access allowed');
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/**
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* CodeIgniter Email Class
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*
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* Permits email to be sent using Mail, Sendmail, or SMTP.
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*
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* @package CodeIgniter
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* @subpackage Libraries
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* @category Libraries
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* @author EllisLab Dev Team
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* @link https://codeigniter.com/userguide3/libraries/email.html
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*/
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class CI_Email
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{
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/**
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* Used as the User-Agent and X-Mailer headers' value.
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*
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* @var string
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*/
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public $useragent = 'CodeIgniter';
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/**
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* Path to the Sendmail binary.
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*
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* @var string
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*/
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public $mailpath = '/usr/sbin/sendmail'; // Sendmail path
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/**
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* Which method to use for sending e-mails.
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*
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* @var string 'mail', 'sendmail' or 'smtp'
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*/
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public $protocol = 'mail'; // mail/sendmail/smtp
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/**
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* STMP Server host
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*
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* @var string
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*/
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public $smtp_host = '';
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/**
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* SMTP Username
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*
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* @var string
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*/
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public $smtp_user = '';
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/**
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* SMTP Password
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*
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* @var string
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*/
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public $smtp_pass = '';
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/**
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* SMTP Server port
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*
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* @var int
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*/
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public $smtp_port = 25;
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/**
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* SMTP connection timeout in seconds
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*
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* @var int
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*/
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public $smtp_timeout = 5;
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/**
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* SMTP persistent connection
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*
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* @var bool
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*/
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public $smtp_keepalive = false;
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/**
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* SMTP Encryption
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*
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* @var string empty, 'tls' or 'ssl'
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*/
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public $smtp_crypto = '';
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/**
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* Whether to apply word-wrapping to the message body.
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*
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* @var bool
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*/
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public $wordwrap = true;
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/**
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* Number of characters to wrap at.
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*
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* @see CI_Email::$wordwrap
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* @var int
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*/
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public $wrapchars = 76;
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/**
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* Message format.
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*
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* @var string 'text' or 'html'
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*/
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public $mailtype = 'text';
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/**
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* Character set (default: utf-8)
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*
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* @var string
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*/
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public $charset = 'UTF-8';
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/**
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* Alternative message (for HTML messages only)
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*
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* @var string
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*/
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public $alt_message = '';
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/**
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* Whether to validate e-mail addresses.
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*
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* @var bool
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*/
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public $validate = false;
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/**
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* X-Priority header value.
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*
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* @var int 1-5
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*/
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public $priority = 3; // Default priority (1 - 5)
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/**
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* Newline character sequence.
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* Use "\r\n" to comply with RFC 822.
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*
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* @link http://www.ietf.org/rfc/rfc822.txt
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* @var string "\r\n" or "\n"
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*/
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public $newline = "\n"; // Default newline. "\r\n" or "\n" (Use "\r\n" to comply with RFC 822)
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/**
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* CRLF character sequence
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*
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* RFC 2045 specifies that for 'quoted-printable' encoding,
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* "\r\n" must be used. However, it appears that some servers
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* (even on the receiving end) don't handle it properly and
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* switching to "\n", while improper, is the only solution
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* that seems to work for all environments.
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*
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* @link http://www.ietf.org/rfc/rfc822.txt
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* @var string
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*/
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public $crlf = "\n";
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/**
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* Whether to use Delivery Status Notification.
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*
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* @var bool
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*/
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public $dsn = false;
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/**
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* Whether to send multipart alternatives.
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* Yahoo! doesn't seem to like these.
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*
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* @var bool
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*/
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public $send_multipart = true;
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/**
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* Whether to send messages to BCC recipients in batches.
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*
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* @var bool
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*/
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public $bcc_batch_mode = false;
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/**
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* BCC Batch max number size.
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*
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* @see CI_Email::$bcc_batch_mode
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* @var int
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*/
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public $bcc_batch_size = 200;
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// --------------------------------------------------------------------
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/**
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* Whether PHP is running in safe mode. Initialized by the class constructor.
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*
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* @var bool
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*/
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protected $_safe_mode = false;
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/**
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* Subject header
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*
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* @var string
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*/
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protected $_subject = '';
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/**
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* Message body
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*
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* @var string
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*/
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protected $_body = '';
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/**
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* Final message body to be sent.
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*
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* @var string
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*/
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protected $_finalbody = '';
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/**
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* Final headers to send
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*
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* @var string
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*/
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protected $_header_str = '';
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/**
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* SMTP Connection socket placeholder
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*
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* @var resource
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*/
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protected $_smtp_connect = '';
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/**
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* Mail encoding
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*
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* @var string '8bit' or '7bit'
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*/
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protected $_encoding = '8bit';
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/**
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* Whether to perform SMTP authentication
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*
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* @var bool
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*/
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protected $_smtp_auth = false;
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/**
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* Whether to send a Reply-To header
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*
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* @var bool
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*/
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protected $_replyto_flag = false;
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/**
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* Debug messages
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*
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* @see CI_Email::print_debugger()
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* @var string
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*/
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protected $_debug_msg = array();
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/**
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* Recipients
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*
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* @var string[]
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*/
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protected $_recipients = array();
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/**
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* CC Recipients
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*
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* @var string[]
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*/
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protected $_cc_array = array();
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/**
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* BCC Recipients
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*
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* @var string[]
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*/
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protected $_bcc_array = array();
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/**
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* Message headers
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*
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* @var string[]
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*/
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protected $_headers = array();
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/**
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* Attachment data
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*
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* @var array
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*/
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protected $_attachments = array();
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/**
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* Valid $protocol values
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*
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* @see CI_Email::$protocol
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* @var string[]
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*/
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protected $_protocols = array('mail', 'sendmail', 'smtp');
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/**
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* Base charsets
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*
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* Character sets valid for 7-bit encoding,
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* excluding language suffix.
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*
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* @var string[]
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*/
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protected $_base_charsets = array('us-ascii', 'iso-2022-');
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/**
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* Bit depths
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*
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* Valid mail encodings
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*
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* @see CI_Email::$_encoding
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* @var string[]
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*/
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protected $_bit_depths = array('7bit', '8bit');
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/**
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* $priority translations
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*
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* Actual values to send with the X-Priority header
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*
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* @var string[]
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*/
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protected $_priorities = array(
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1 => '1 (Highest)',
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2 => '2 (High)',
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3 => '3 (Normal)',
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4 => '4 (Low)',
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5 => '5 (Lowest)'
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);
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/**
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* mbstring.func_overload flag
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*
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* @var bool
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*/
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protected static $func_overload;
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// --------------------------------------------------------------------
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/**
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* Constructor - Sets Email Preferences
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*
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* The constructor can be passed an array of config values
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*
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* @param array $config = array()
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* @return void
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*/
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public function __construct(array $config = array())
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{
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$this->charset = config_item('charset');
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$this->initialize($config);
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$this->_safe_mode = (! is_php('5.4') && ini_get('safe_mode'));
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isset(self::$func_overload) or self::$func_overload = (! is_php('8.0') && extension_loaded('mbstring') && @ini_get('mbstring.func_overload'));
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log_message('info', 'Email Class Initialized');
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}
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// --------------------------------------------------------------------
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/**
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* Initialize preferences
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*
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* @param array $config
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* @return CI_Email
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*/
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public function initialize(array $config = array())
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{
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$this->clear();
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foreach ($config as $key => $val) {
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if (isset($this->$key)) {
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$method = 'set_' . $key;
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if (method_exists($this, $method)) {
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$this->$method($val);
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} else {
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$this->$key = $val;
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}
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}
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}
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$this->charset = strtoupper($this->charset);
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$this->_smtp_auth = isset($this->smtp_user[0], $this->smtp_pass[0]);
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Initialize the Email Data
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*
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* @param bool
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* @return CI_Email
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*/
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public function clear($clear_attachments = false)
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{
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$this->_subject = '';
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$this->_body = '';
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$this->_finalbody = '';
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$this->_header_str = '';
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$this->_replyto_flag = false;
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$this->_recipients = array();
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$this->_cc_array = array();
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$this->_bcc_array = array();
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$this->_headers = array();
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$this->_debug_msg = array();
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$this->set_header('Date', $this->_set_date());
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if ($clear_attachments !== false) {
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$this->_attachments = array();
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set FROM
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*
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* @param string $from
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* @param string $name
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* @param string $return_path = NULL Return-Path
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* @return CI_Email
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*/
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public function from($from, $name = '', $return_path = null)
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{
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if (preg_match('/\<(.*)\>/', $from, $match)) {
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$from = $match[1];
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}
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if ($this->validate) {
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$this->validate_email($this->_str_to_array($from));
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if ($return_path) {
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$this->validate_email($this->_str_to_array($return_path));
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}
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}
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// prepare the display name
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if ($name !== '') {
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// only use Q encoding if there are characters that would require it
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if (! preg_match('/[\200-\377]/', $name)) {
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// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
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$name = '"' . addcslashes($name, "\0..\37\177'\"\\") . '"';
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} else {
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$name = $this->_prep_q_encoding($name);
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}
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}
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$this->set_header('From', $name . ' <' . $from . '>');
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isset($return_path) or $return_path = $from;
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$this->set_header('Return-Path', '<' . $return_path . '>');
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set Reply-to
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*
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* @param string
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* @param string
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* @return CI_Email
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*/
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public function reply_to($replyto, $name = '')
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{
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if (preg_match('/\<(.*)\>/', $replyto, $match)) {
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$replyto = $match[1];
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}
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if ($this->validate) {
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$this->validate_email($this->_str_to_array($replyto));
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}
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if ($name !== '') {
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// only use Q encoding if there are characters that would require it
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if (! preg_match('/[\200-\377]/', $name)) {
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// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
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$name = '"' . addcslashes($name, "\0..\37\177'\"\\") . '"';
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} else {
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$name = $this->_prep_q_encoding($name);
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}
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}
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$this->set_header('Reply-To', $name . ' <' . $replyto . '>');
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$this->_replyto_flag = true;
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set Recipients
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*
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* @param string
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* @return CI_Email
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*/
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public function to($to)
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{
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$to = $this->_str_to_array($to);
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$to = $this->clean_email($to);
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if ($this->validate) {
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$this->validate_email($to);
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}
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if ($this->_get_protocol() !== 'mail') {
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$this->set_header('To', implode(', ', $to));
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}
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$this->_recipients = $to;
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set CC
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*
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* @param string
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* @return CI_Email
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*/
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public function cc($cc)
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{
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$cc = $this->clean_email($this->_str_to_array($cc));
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if ($this->validate) {
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$this->validate_email($cc);
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}
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$this->set_header('Cc', implode(', ', $cc));
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if ($this->_get_protocol() === 'smtp') {
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$this->_cc_array = $cc;
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set BCC
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*
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* @param string
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* @param string
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* @return CI_Email
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*/
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public function bcc($bcc, $limit = '')
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{
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if ($limit !== '' && is_numeric($limit)) {
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$this->bcc_batch_mode = true;
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$this->bcc_batch_size = $limit;
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}
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$bcc = $this->clean_email($this->_str_to_array($bcc));
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if ($this->validate) {
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$this->validate_email($bcc);
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}
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if ($this->_get_protocol() === 'smtp' or ($this->bcc_batch_mode && count($bcc) > $this->bcc_batch_size)) {
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$this->_bcc_array = $bcc;
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} else {
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$this->set_header('Bcc', implode(', ', $bcc));
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set Email Subject
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*
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* @param string
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* @return CI_Email
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*/
|
|
public function subject($subject)
|
|
{
|
|
$subject = $this->_prep_q_encoding($subject);
|
|
$this->set_header('Subject', $subject);
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Body
|
|
*
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function message($body)
|
|
{
|
|
$this->_body = rtrim(str_replace("\r", '', $body));
|
|
|
|
/* strip slashes only if magic quotes is ON
|
|
if we do it with magic quotes OFF, it strips real, user-inputted chars.
|
|
|
|
NOTE: In PHP 5.4 get_magic_quotes_gpc() will always return 0 and
|
|
it will probably not exist in future versions at all.
|
|
*/
|
|
if (! is_php('5.4') && get_magic_quotes_gpc()) {
|
|
$this->_body = stripslashes($this->_body);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Assign file attachments
|
|
*
|
|
* @param string $file Can be local path, URL or buffered content
|
|
* @param string $disposition = 'attachment'
|
|
* @param string $newname = NULL
|
|
* @param string $mime = ''
|
|
* @return CI_Email
|
|
*/
|
|
public function attach($file, $disposition = '', $newname = null, $mime = '')
|
|
{
|
|
if ($mime === '') {
|
|
if (strpos($file, '://') === false && ! file_exists($file)) {
|
|
$this->_set_error_message('lang:email_attachment_missing', $file);
|
|
return false;
|
|
}
|
|
|
|
if (! $fp = @fopen($file, 'rb')) {
|
|
$this->_set_error_message('lang:email_attachment_unreadable', $file);
|
|
return false;
|
|
}
|
|
|
|
$file_content = stream_get_contents($fp);
|
|
$mime = $this->_mime_types(pathinfo($file, PATHINFO_EXTENSION));
|
|
fclose($fp);
|
|
} else {
|
|
$file_content = & $file; // buffered file
|
|
}
|
|
|
|
$this->_attachments[] = array(
|
|
'name' => array($file, $newname),
|
|
'disposition' => empty($disposition) ? 'attachment' : $disposition, // Can also be 'inline' Not sure if it matters
|
|
'type' => $mime,
|
|
'content' => chunk_split(base64_encode($file_content)),
|
|
'multipart' => 'mixed'
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set and return attachment Content-ID
|
|
*
|
|
* Useful for attached inline pictures
|
|
*
|
|
* @param string $filename
|
|
* @return string
|
|
*/
|
|
public function attachment_cid($filename)
|
|
{
|
|
for ($i = 0, $c = count($this->_attachments); $i < $c; $i++) {
|
|
if ($this->_attachments[$i]['name'][0] === $filename) {
|
|
$this->_attachments[$i]['multipart'] = 'related';
|
|
$this->_attachments[$i]['cid'] = uniqid(basename($this->_attachments[$i]['name'][0]) . '@');
|
|
return $this->_attachments[$i]['cid'];
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Add a Header Item
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function set_header($header, $value)
|
|
{
|
|
$this->_headers[$header] = str_replace(array("\n", "\r"), '', $value);
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Convert a String to an Array
|
|
*
|
|
* @param string
|
|
* @return array
|
|
*/
|
|
protected function _str_to_array($email)
|
|
{
|
|
if (! is_array($email)) {
|
|
return (strpos($email, ',') !== false)
|
|
? preg_split('/[\s,]/', $email, -1, PREG_SPLIT_NO_EMPTY)
|
|
: (array) trim($email);
|
|
}
|
|
|
|
return $email;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Multipart Value
|
|
*
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function set_alt_message($str)
|
|
{
|
|
$this->alt_message = (string) $str;
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Mailtype
|
|
*
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function set_mailtype($type = 'text')
|
|
{
|
|
$this->mailtype = ($type === 'html') ? 'html' : 'text';
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Wordwrap
|
|
*
|
|
* @param bool
|
|
* @return CI_Email
|
|
*/
|
|
public function set_wordwrap($wordwrap = true)
|
|
{
|
|
$this->wordwrap = (bool) $wordwrap;
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Protocol
|
|
*
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function set_protocol($protocol = 'mail')
|
|
{
|
|
$this->protocol = in_array($protocol, $this->_protocols, true) ? strtolower($protocol) : 'mail';
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Priority
|
|
*
|
|
* @param int
|
|
* @return CI_Email
|
|
*/
|
|
public function set_priority($n = 3)
|
|
{
|
|
$this->priority = preg_match('/^[1-5]$/', $n) ? (int) $n : 3;
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Newline Character
|
|
*
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function set_newline($newline = "\n")
|
|
{
|
|
$this->newline = in_array($newline, array("\n", "\r\n", "\r")) ? $newline : "\n";
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set CRLF
|
|
*
|
|
* @param string
|
|
* @return CI_Email
|
|
*/
|
|
public function set_crlf($crlf = "\n")
|
|
{
|
|
$this->crlf = ($crlf !== "\n" && $crlf !== "\r\n" && $crlf !== "\r") ? "\n" : $crlf;
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get the Message ID
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _get_message_id()
|
|
{
|
|
$from = str_replace(array('>', '<'), '', $this->_headers['Return-Path']);
|
|
return '<' . uniqid('') . strstr($from, '@') . '>';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get Mail Protocol
|
|
*
|
|
* @return mixed
|
|
*/
|
|
protected function _get_protocol()
|
|
{
|
|
$this->protocol = strtolower($this->protocol);
|
|
in_array($this->protocol, $this->_protocols, true) or $this->protocol = 'mail';
|
|
return $this->protocol;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get Mail Encoding
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _get_encoding()
|
|
{
|
|
in_array($this->_encoding, $this->_bit_depths) or $this->_encoding = '8bit';
|
|
|
|
foreach ($this->_base_charsets as $charset) {
|
|
if (strpos($this->charset, $charset) === 0) {
|
|
$this->_encoding = '7bit';
|
|
}
|
|
}
|
|
|
|
return $this->_encoding;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get content type (text/html/attachment)
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _get_content_type()
|
|
{
|
|
if ($this->mailtype === 'html') {
|
|
return empty($this->_attachments) ? 'html' : 'html-attach';
|
|
} elseif ($this->mailtype === 'text' && ! empty($this->_attachments)) {
|
|
return 'plain-attach';
|
|
}
|
|
|
|
return 'plain';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set RFC 822 Date
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _set_date()
|
|
{
|
|
$timezone = date('Z');
|
|
$operator = ($timezone[0] === '-') ? '-' : '+';
|
|
$timezone = abs($timezone);
|
|
$timezone = floor($timezone / 3600) * 100 + ($timezone % 3600) / 60;
|
|
|
|
return sprintf('%s %s%04d', date('D, j M Y H:i:s'), $operator, $timezone);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Mime message
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _get_mime_message()
|
|
{
|
|
return 'This is a multi-part message in MIME format.' . $this->newline . 'Your email application may not support this format.';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Validate Email Address
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function validate_email($email)
|
|
{
|
|
if (! is_array($email)) {
|
|
$this->_set_error_message('lang:email_must_be_array');
|
|
return false;
|
|
}
|
|
|
|
foreach ($email as $val) {
|
|
if (! $this->valid_email($val)) {
|
|
$this->_set_error_message('lang:email_invalid_address', $val);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Email Validation
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function valid_email($email)
|
|
{
|
|
if (function_exists('idn_to_ascii') && strpos($email, '@')) {
|
|
list($account, $domain) = explode('@', $email, 2);
|
|
$domain = defined('INTL_IDNA_VARIANT_UTS46')
|
|
? idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46)
|
|
: idn_to_ascii($domain);
|
|
|
|
if ($domain !== false) {
|
|
$email = $account . '@' . $domain;
|
|
}
|
|
}
|
|
|
|
return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Clean Extended Email Address: Joe Smith <joe@smith.com>
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
public function clean_email($email)
|
|
{
|
|
if (! is_array($email)) {
|
|
return preg_match('/\<(.*)\>/', $email, $match) ? $match[1] : $email;
|
|
}
|
|
|
|
$clean_email = array();
|
|
|
|
foreach ($email as $addy) {
|
|
$clean_email[] = preg_match('/\<(.*)\>/', $addy, $match) ? $match[1] : $addy;
|
|
}
|
|
|
|
return $clean_email;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Build alternative plain text message
|
|
*
|
|
* Provides the raw message for use in plain-text headers of
|
|
* HTML-formatted emails.
|
|
* If the user hasn't specified his own alternative message
|
|
* it creates one by stripping the HTML
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _get_alt_message()
|
|
{
|
|
if (! empty($this->alt_message)) {
|
|
return ($this->wordwrap)
|
|
? $this->word_wrap($this->alt_message, 76)
|
|
: $this->alt_message;
|
|
}
|
|
|
|
$body = preg_match('/\<body.*?\>(.*)\<\/body\>/si', $this->_body, $match) ? $match[1] : $this->_body;
|
|
$body = str_replace("\t", '', preg_replace('#<!--(.*)--\>#', '', trim(strip_tags($body))));
|
|
|
|
for ($i = 20; $i >= 3; $i--) {
|
|
$body = str_replace(str_repeat("\n", $i), "\n\n", $body);
|
|
}
|
|
|
|
// Reduce multiple spaces
|
|
$body = preg_replace('| +|', ' ', $body);
|
|
|
|
return ($this->wordwrap)
|
|
? $this->word_wrap($body, 76)
|
|
: $body;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Word Wrap
|
|
*
|
|
* @param string
|
|
* @param int line-length limit
|
|
* @return string
|
|
*/
|
|
public function word_wrap($str, $charlim = null)
|
|
{
|
|
// Set the character limit, if not already present
|
|
if (empty($charlim)) {
|
|
$charlim = empty($this->wrapchars) ? 76 : $this->wrapchars;
|
|
}
|
|
|
|
// Standardize newlines
|
|
if (strpos($str, "\r") !== false) {
|
|
$str = str_replace(array("\r\n", "\r"), "\n", $str);
|
|
}
|
|
|
|
// Reduce multiple spaces at end of line
|
|
$str = preg_replace('| +\n|', "\n", $str);
|
|
|
|
// If the current word is surrounded by {unwrap} tags we'll
|
|
// strip the entire chunk and replace it with a marker.
|
|
$unwrap = array();
|
|
if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $str, $matches)) {
|
|
for ($i = 0, $c = count($matches[0]); $i < $c; $i++) {
|
|
$unwrap[] = $matches[1][$i];
|
|
$str = str_replace($matches[0][$i], '{{unwrapped' . $i . '}}', $str);
|
|
}
|
|
}
|
|
|
|
// Use PHP's native function to do the initial wordwrap.
|
|
// We set the cut flag to FALSE so that any individual words that are
|
|
// too long get left alone. In the next step we'll deal with them.
|
|
$str = wordwrap($str, $charlim, "\n", false);
|
|
|
|
// Split the string into individual lines of text and cycle through them
|
|
$output = '';
|
|
foreach (explode("\n", $str) as $line) {
|
|
// Is the line within the allowed character count?
|
|
// If so we'll join it to the output and continue
|
|
if (self::strlen($line) <= $charlim) {
|
|
$output .= $line . $this->newline;
|
|
continue;
|
|
}
|
|
|
|
$temp = '';
|
|
do {
|
|
// If the over-length word is a URL we won't wrap it
|
|
if (preg_match('!\[url.+\]|://|www\.!', $line)) {
|
|
break;
|
|
}
|
|
|
|
// Trim the word down
|
|
$temp .= self::substr($line, 0, $charlim - 1);
|
|
$line = self::substr($line, $charlim - 1);
|
|
} while (self::strlen($line) > $charlim);
|
|
|
|
// If $temp contains data it means we had to split up an over-length
|
|
// word into smaller chunks so we'll add it back to our current line
|
|
if ($temp !== '') {
|
|
$output .= $temp . $this->newline;
|
|
}
|
|
|
|
$output .= $line . $this->newline;
|
|
}
|
|
|
|
// Put our markers back
|
|
if (count($unwrap) > 0) {
|
|
foreach ($unwrap as $key => $val) {
|
|
$output = str_replace('{{unwrapped' . $key . '}}', $val, $output);
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Build final headers
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _build_headers()
|
|
{
|
|
$this->set_header('User-Agent', $this->useragent);
|
|
$this->set_header('X-Sender', $this->clean_email($this->_headers['From']));
|
|
$this->set_header('X-Mailer', $this->useragent);
|
|
$this->set_header('X-Priority', $this->_priorities[$this->priority]);
|
|
$this->set_header('Message-ID', $this->_get_message_id());
|
|
$this->set_header('Mime-Version', '1.0');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Write Headers as a string
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _write_headers()
|
|
{
|
|
if ($this->protocol === 'mail') {
|
|
if (isset($this->_headers['Subject'])) {
|
|
$this->_subject = $this->_headers['Subject'];
|
|
unset($this->_headers['Subject']);
|
|
}
|
|
}
|
|
|
|
reset($this->_headers);
|
|
$this->_header_str = '';
|
|
|
|
foreach ($this->_headers as $key => $val) {
|
|
$val = trim($val);
|
|
|
|
if ($val !== '') {
|
|
$this->_header_str .= $key . ': ' . $val . $this->newline;
|
|
}
|
|
}
|
|
|
|
if ($this->_get_protocol() === 'mail') {
|
|
$this->_header_str = rtrim($this->_header_str);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Build Final Body and attachments
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _build_message()
|
|
{
|
|
if ($this->wordwrap === true && $this->mailtype !== 'html') {
|
|
$this->_body = $this->word_wrap($this->_body);
|
|
}
|
|
|
|
$this->_write_headers();
|
|
|
|
$hdr = ($this->_get_protocol() === 'mail') ? $this->newline : '';
|
|
$body = '';
|
|
|
|
switch ($this->_get_content_type()) {
|
|
case 'plain':
|
|
$hdr .= 'Content-Type: text/plain; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: ' . $this->_get_encoding();
|
|
|
|
if ($this->_get_protocol() === 'mail') {
|
|
$this->_header_str .= $hdr;
|
|
$this->_finalbody = $this->_body;
|
|
} else {
|
|
$this->_finalbody = $hdr . $this->newline . $this->newline . $this->_body;
|
|
}
|
|
|
|
return;
|
|
|
|
case 'html':
|
|
if ($this->send_multipart === false) {
|
|
$hdr .= 'Content-Type: text/html; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: quoted-printable';
|
|
} else {
|
|
$boundary = uniqid('B_ALT_');
|
|
$hdr .= 'Content-Type: multipart/alternative; boundary="' . $boundary . '"';
|
|
|
|
$body .= $this->_get_mime_message() . $this->newline . $this->newline
|
|
. '--' . $boundary . $this->newline
|
|
|
|
. 'Content-Type: text/plain; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: ' . $this->_get_encoding() . $this->newline . $this->newline
|
|
. $this->_get_alt_message() . $this->newline . $this->newline
|
|
. '--' . $boundary . $this->newline
|
|
|
|
. 'Content-Type: text/html; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: quoted-printable' . $this->newline . $this->newline;
|
|
}
|
|
|
|
$this->_finalbody = $body . $this->_prep_quoted_printable($this->_body) . $this->newline . $this->newline;
|
|
|
|
if ($this->_get_protocol() === 'mail') {
|
|
$this->_header_str .= $hdr;
|
|
} else {
|
|
$this->_finalbody = $hdr . $this->newline . $this->newline . $this->_finalbody;
|
|
}
|
|
|
|
if ($this->send_multipart !== false) {
|
|
$this->_finalbody .= '--' . $boundary . '--';
|
|
}
|
|
|
|
return;
|
|
|
|
case 'plain-attach':
|
|
$boundary = uniqid('B_ATC_');
|
|
$hdr .= 'Content-Type: multipart/mixed; boundary="' . $boundary . '"';
|
|
|
|
if ($this->_get_protocol() === 'mail') {
|
|
$this->_header_str .= $hdr;
|
|
}
|
|
|
|
$body .= $this->_get_mime_message() . $this->newline
|
|
. $this->newline
|
|
. '--' . $boundary . $this->newline
|
|
. 'Content-Type: text/plain; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: ' . $this->_get_encoding() . $this->newline
|
|
. $this->newline
|
|
. $this->_body . $this->newline . $this->newline;
|
|
|
|
$this->_append_attachments($body, $boundary);
|
|
|
|
break;
|
|
case 'html-attach':
|
|
$alt_boundary = uniqid('B_ALT_');
|
|
$last_boundary = null;
|
|
|
|
if ($this->_attachments_have_multipart('mixed')) {
|
|
$atc_boundary = uniqid('B_ATC_');
|
|
$hdr .= 'Content-Type: multipart/mixed; boundary="' . $atc_boundary . '"';
|
|
$last_boundary = $atc_boundary;
|
|
}
|
|
|
|
if ($this->_attachments_have_multipart('related')) {
|
|
$rel_boundary = uniqid('B_REL_');
|
|
$rel_boundary_header = 'Content-Type: multipart/related; boundary="' . $rel_boundary . '"';
|
|
|
|
if (isset($last_boundary)) {
|
|
$body .= '--' . $last_boundary . $this->newline . $rel_boundary_header;
|
|
} else {
|
|
$hdr .= $rel_boundary_header;
|
|
}
|
|
|
|
$last_boundary = $rel_boundary;
|
|
}
|
|
|
|
if ($this->_get_protocol() === 'mail') {
|
|
$this->_header_str .= $hdr;
|
|
}
|
|
|
|
self::strlen($body) && $body .= $this->newline . $this->newline;
|
|
$body .= $this->_get_mime_message() . $this->newline . $this->newline
|
|
. '--' . $last_boundary . $this->newline
|
|
|
|
. 'Content-Type: multipart/alternative; boundary="' . $alt_boundary . '"' . $this->newline . $this->newline
|
|
. '--' . $alt_boundary . $this->newline
|
|
|
|
. 'Content-Type: text/plain; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: ' . $this->_get_encoding() . $this->newline . $this->newline
|
|
. $this->_get_alt_message() . $this->newline . $this->newline
|
|
. '--' . $alt_boundary . $this->newline
|
|
|
|
. 'Content-Type: text/html; charset=' . $this->charset . $this->newline
|
|
. 'Content-Transfer-Encoding: quoted-printable' . $this->newline . $this->newline
|
|
|
|
. $this->_prep_quoted_printable($this->_body) . $this->newline . $this->newline
|
|
. '--' . $alt_boundary . '--' . $this->newline . $this->newline;
|
|
|
|
if (! empty($rel_boundary)) {
|
|
$body .= $this->newline . $this->newline;
|
|
$this->_append_attachments($body, $rel_boundary, 'related');
|
|
}
|
|
|
|
// multipart/mixed attachments
|
|
if (! empty($atc_boundary)) {
|
|
$body .= $this->newline . $this->newline;
|
|
$this->_append_attachments($body, $atc_boundary, 'mixed');
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
$this->_finalbody = ($this->_get_protocol() === 'mail')
|
|
? $body
|
|
: $hdr . $this->newline . $this->newline . $body;
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
protected function _attachments_have_multipart($type)
|
|
{
|
|
foreach ($this->_attachments as &$attachment) {
|
|
if ($attachment['multipart'] === $type) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Prepares attachment string
|
|
*
|
|
* @param string $body Message body to append to
|
|
* @param string $boundary Multipart boundary
|
|
* @param string $multipart When provided, only attachments of this type will be processed
|
|
* @return string
|
|
*/
|
|
protected function _append_attachments(&$body, $boundary, $multipart = null)
|
|
{
|
|
for ($i = 0, $c = count($this->_attachments); $i < $c; $i++) {
|
|
if (isset($multipart) && $this->_attachments[$i]['multipart'] !== $multipart) {
|
|
continue;
|
|
}
|
|
|
|
$name = isset($this->_attachments[$i]['name'][1])
|
|
? $this->_attachments[$i]['name'][1]
|
|
: basename($this->_attachments[$i]['name'][0]);
|
|
|
|
$body .= '--' . $boundary . $this->newline
|
|
. 'Content-Type: ' . $this->_attachments[$i]['type'] . '; name="' . $name . '"' . $this->newline
|
|
. 'Content-Disposition: ' . $this->_attachments[$i]['disposition'] . ';' . $this->newline
|
|
. 'Content-Transfer-Encoding: base64' . $this->newline
|
|
. (empty($this->_attachments[$i]['cid']) ? '' : 'Content-ID: <' . $this->_attachments[$i]['cid'] . '>' . $this->newline)
|
|
. $this->newline
|
|
. $this->_attachments[$i]['content'] . $this->newline;
|
|
}
|
|
|
|
// $name won't be set if no attachments were appended,
|
|
// and therefore a boundary wouldn't be necessary
|
|
empty($name) or $body .= '--' . $boundary . '--';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Prep Quoted Printable
|
|
*
|
|
* Prepares string for Quoted-Printable Content-Transfer-Encoding
|
|
* Refer to RFC 2045 http://www.ietf.org/rfc/rfc2045.txt
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
protected function _prep_quoted_printable($str)
|
|
{
|
|
// ASCII code numbers for "safe" characters that can always be
|
|
// used literally, without encoding, as described in RFC 2049.
|
|
// http://www.ietf.org/rfc/rfc2049.txt
|
|
static $ascii_safe_chars = array(
|
|
// ' ( ) + , - . / : = ?
|
|
39, 40, 41, 43, 44, 45, 46, 47, 58, 61, 63,
|
|
// numbers
|
|
48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
|
|
// upper-case letters
|
|
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
|
|
// lower-case letters
|
|
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122
|
|
);
|
|
|
|
// We are intentionally wrapping so mail servers will encode characters
|
|
// properly and MUAs will behave, so {unwrap} must go!
|
|
$str = str_replace(array('{unwrap}', '{/unwrap}'), '', $str);
|
|
|
|
// RFC 2045 specifies CRLF as "\r\n".
|
|
// However, many developers choose to override that and violate
|
|
// the RFC rules due to (apparently) a bug in MS Exchange,
|
|
// which only works with "\n".
|
|
if ($this->crlf === "\r\n") {
|
|
return quoted_printable_encode($str);
|
|
}
|
|
|
|
// Reduce multiple spaces & remove nulls
|
|
$str = preg_replace(array('| +|', '/\x00+/'), array(' ', ''), $str);
|
|
|
|
// Standardize newlines
|
|
if (strpos($str, "\r") !== false) {
|
|
$str = str_replace(array("\r\n", "\r"), "\n", $str);
|
|
}
|
|
|
|
$escape = '=';
|
|
$output = '';
|
|
|
|
foreach (explode("\n", $str) as $line) {
|
|
$length = self::strlen($line);
|
|
$temp = '';
|
|
|
|
// Loop through each character in the line to add soft-wrap
|
|
// characters at the end of a line " =\r\n" and add the newly
|
|
// processed line(s) to the output (see comment on $crlf class property)
|
|
for ($i = 0; $i < $length; $i++) {
|
|
// Grab the next character
|
|
$char = $line[$i];
|
|
$ascii = ord($char);
|
|
|
|
// Convert spaces and tabs but only if it's the end of the line
|
|
if ($ascii === 32 or $ascii === 9) {
|
|
if ($i === ($length - 1)) {
|
|
$char = $escape . sprintf('%02s', dechex($ascii));
|
|
}
|
|
}
|
|
// DO NOT move this below the $ascii_safe_chars line!
|
|
//
|
|
// = (equals) signs are allowed by RFC2049, but must be encoded
|
|
// as they are the encoding delimiter!
|
|
elseif ($ascii === 61) {
|
|
$char = $escape . strtoupper(sprintf('%02s', dechex($ascii))); // =3D
|
|
} elseif (! in_array($ascii, $ascii_safe_chars, true)) {
|
|
$char = $escape . strtoupper(sprintf('%02s', dechex($ascii)));
|
|
}
|
|
|
|
// If we're at the character limit, add the line to the output,
|
|
// reset our temp variable, and keep on chuggin'
|
|
if ((self::strlen($temp) + self::strlen($char)) >= 76) {
|
|
$output .= $temp . $escape . $this->crlf;
|
|
$temp = '';
|
|
}
|
|
|
|
// Add the character to our temporary line
|
|
$temp .= $char;
|
|
}
|
|
|
|
// Add our completed line to the output
|
|
$output .= $temp . $this->crlf;
|
|
}
|
|
|
|
// get rid of extra CRLF tacked onto the end
|
|
return self::substr($output, 0, self::strlen($this->crlf) * -1);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Prep Q Encoding
|
|
*
|
|
* Performs "Q Encoding" on a string for use in email headers.
|
|
* It's related but not identical to quoted-printable, so it has its
|
|
* own method.
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
protected function _prep_q_encoding($str)
|
|
{
|
|
$str = str_replace(array("\r", "\n"), '', $str);
|
|
|
|
if ($this->charset === 'UTF-8') {
|
|
// Note: We used to have mb_encode_mimeheader() as the first choice
|
|
// here, but it turned out to be buggy and unreliable. DO NOT
|
|
// re-add it! -- Narf
|
|
if (ICONV_ENABLED === true) {
|
|
$output = @iconv_mime_encode(
|
|
'',
|
|
$str,
|
|
array(
|
|
'scheme' => 'Q',
|
|
'line-length' => 76,
|
|
'input-charset' => $this->charset,
|
|
'output-charset' => $this->charset,
|
|
'line-break-chars' => $this->crlf
|
|
)
|
|
);
|
|
|
|
// There are reports that iconv_mime_encode() might fail and return FALSE
|
|
if ($output !== false) {
|
|
// iconv_mime_encode() will always put a header field name.
|
|
// We've passed it an empty one, but it still prepends our
|
|
// encoded string with ': ', so we need to strip it.
|
|
return self::substr($output, 2);
|
|
}
|
|
|
|
$chars = iconv_strlen($str, 'UTF-8');
|
|
} elseif (MB_ENABLED === true) {
|
|
$chars = mb_strlen($str, 'UTF-8');
|
|
}
|
|
}
|
|
|
|
// We might already have this set for UTF-8
|
|
isset($chars) or $chars = self::strlen($str);
|
|
|
|
$output = '=?' . $this->charset . '?Q?';
|
|
for ($i = 0, $length = self::strlen($output); $i < $chars; $i++) {
|
|
$chr = ($this->charset === 'UTF-8' && ICONV_ENABLED === true)
|
|
? '=' . implode('=', str_split(strtoupper(bin2hex(iconv_substr($str, $i, 1, $this->charset))), 2))
|
|
: '=' . strtoupper(bin2hex($str[$i]));
|
|
|
|
// RFC 2045 sets a limit of 76 characters per line.
|
|
// We'll append ?= to the end of each line though.
|
|
if ($length + ($l = self::strlen($chr)) > 74) {
|
|
$output .= '?=' . $this->crlf // EOL
|
|
. ' =?' . $this->charset . '?Q?' . $chr; // New line
|
|
$length = 6 + self::strlen($this->charset) + $l; // Reset the length for the new line
|
|
} else {
|
|
$output .= $chr;
|
|
$length += $l;
|
|
}
|
|
}
|
|
|
|
// End the header
|
|
return $output . '?=';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Send Email
|
|
*
|
|
* @param bool $auto_clear = TRUE
|
|
* @return bool
|
|
*/
|
|
public function send($auto_clear = true)
|
|
{
|
|
if (! isset($this->_headers['From'])) {
|
|
$this->_set_error_message('lang:email_no_from');
|
|
return false;
|
|
}
|
|
|
|
if ($this->_replyto_flag === false) {
|
|
$this->reply_to($this->_headers['From']);
|
|
}
|
|
|
|
if (
|
|
! isset($this->_recipients) && ! isset($this->_headers['To'])
|
|
&& ! isset($this->_bcc_array) && ! isset($this->_headers['Bcc'])
|
|
&& ! isset($this->_headers['Cc'])
|
|
) {
|
|
$this->_set_error_message('lang:email_no_recipients');
|
|
return false;
|
|
}
|
|
|
|
$this->_build_headers();
|
|
|
|
if ($this->bcc_batch_mode && count($this->_bcc_array) > $this->bcc_batch_size) {
|
|
$result = $this->batch_bcc_send();
|
|
|
|
if ($result && $auto_clear) {
|
|
$this->clear();
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
if ($this->_build_message() === false) {
|
|
return false;
|
|
}
|
|
|
|
$result = $this->_spool_email();
|
|
|
|
if ($result && $auto_clear) {
|
|
$this->clear();
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Batch Bcc Send. Sends groups of BCCs in batches
|
|
*
|
|
* @return void
|
|
*/
|
|
public function batch_bcc_send()
|
|
{
|
|
$float = $this->bcc_batch_size - 1;
|
|
$set = '';
|
|
$chunk = array();
|
|
|
|
for ($i = 0, $c = count($this->_bcc_array); $i < $c; $i++) {
|
|
if (isset($this->_bcc_array[$i])) {
|
|
$set .= ', ' . $this->_bcc_array[$i];
|
|
}
|
|
|
|
if ($i === $float) {
|
|
$chunk[] = self::substr($set, 1);
|
|
$float += $this->bcc_batch_size;
|
|
$set = '';
|
|
}
|
|
|
|
if ($i === $c - 1) {
|
|
$chunk[] = self::substr($set, 1);
|
|
}
|
|
}
|
|
|
|
for ($i = 0, $c = count($chunk); $i < $c; $i++) {
|
|
unset($this->_headers['Bcc']);
|
|
|
|
$bcc = $this->clean_email($this->_str_to_array($chunk[$i]));
|
|
|
|
if ($this->protocol !== 'smtp') {
|
|
$this->set_header('Bcc', implode(', ', $bcc));
|
|
} else {
|
|
$this->_bcc_array = $bcc;
|
|
}
|
|
|
|
if ($this->_build_message() === false) {
|
|
return false;
|
|
}
|
|
|
|
$this->_spool_email();
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Unwrap special elements
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _unwrap_specials()
|
|
{
|
|
$this->_finalbody = preg_replace_callback('/\{unwrap\}(.*?)\{\/unwrap\}/si', array($this, '_remove_nl_callback'), $this->_finalbody);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Strip line-breaks via callback
|
|
*
|
|
* @param string $matches
|
|
* @return string
|
|
*/
|
|
protected function _remove_nl_callback($matches)
|
|
{
|
|
if (strpos($matches[1], "\r") !== false or strpos($matches[1], "\n") !== false) {
|
|
$matches[1] = str_replace(array("\r\n", "\r", "\n"), '', $matches[1]);
|
|
}
|
|
|
|
return $matches[1];
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Spool mail to the mail server
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _spool_email()
|
|
{
|
|
$this->_unwrap_specials();
|
|
|
|
$protocol = $this->_get_protocol();
|
|
$method = '_send_with_' . $protocol;
|
|
if (! $this->$method()) {
|
|
$this->_set_error_message('lang:email_send_failure_' . ($protocol === 'mail' ? 'phpmail' : $protocol));
|
|
return false;
|
|
}
|
|
|
|
$this->_set_error_message('lang:email_sent', $protocol);
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Validate email for shell
|
|
*
|
|
* Applies stricter, shell-safe validation to email addresses.
|
|
* Introduced to prevent RCE via sendmail's -f option.
|
|
*
|
|
* @see https://github.com/bcit-ci/CodeIgniter/issues/4963
|
|
* @see https://gist.github.com/Zenexer/40d02da5e07f151adeaeeaa11af9ab36
|
|
* @license https://creativecommons.org/publicdomain/zero/1.0/ CC0 1.0, Public Domain
|
|
*
|
|
* Credits for the base concept go to Paul Buonopane <paul@namepros.com>
|
|
*
|
|
* @param string $email
|
|
* @return bool
|
|
*/
|
|
protected function _validate_email_for_shell(&$email)
|
|
{
|
|
if (function_exists('idn_to_ascii') && strpos($email, '@')) {
|
|
list($account, $domain) = explode('@', $email, 2);
|
|
$domain = defined('INTL_IDNA_VARIANT_UTS46')
|
|
? idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46)
|
|
: idn_to_ascii($domain);
|
|
|
|
if ($domain !== false) {
|
|
$email = $account . '@' . $domain;
|
|
}
|
|
}
|
|
|
|
return (filter_var($email, FILTER_VALIDATE_EMAIL) === $email && preg_match('#\A[a-z0-9._+-]+@[a-z0-9.-]{1,253}\z#i', $email));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Send using mail()
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _send_with_mail()
|
|
{
|
|
if (is_array($this->_recipients)) {
|
|
$this->_recipients = implode(', ', $this->_recipients);
|
|
}
|
|
|
|
// _validate_email_for_shell() below accepts by reference,
|
|
// so this needs to be assigned to a variable
|
|
$from = $this->clean_email($this->_headers['Return-Path']);
|
|
|
|
if ($this->_safe_mode === true || ! $this->_validate_email_for_shell($from)) {
|
|
return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str);
|
|
} else {
|
|
// most documentation of sendmail using the "-f" flag lacks a space after it, however
|
|
// we've encountered servers that seem to require it to be in place.
|
|
return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, '-f ' . $from);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Send using Sendmail
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _send_with_sendmail()
|
|
{
|
|
// _validate_email_for_shell() below accepts by reference,
|
|
// so this needs to be assigned to a variable
|
|
$from = $this->clean_email($this->_headers['From']);
|
|
if ($this->_validate_email_for_shell($from)) {
|
|
$from = '-f ' . $from;
|
|
} else {
|
|
$from = '';
|
|
}
|
|
|
|
// is popen() enabled?
|
|
if (! function_usable('popen') or false === ($fp = @popen($this->mailpath . ' -oi ' . $from . ' -t', 'w'))) {
|
|
// server probably has popen disabled, so nothing we can do to get a verbose error.
|
|
return false;
|
|
}
|
|
|
|
fputs($fp, $this->_header_str);
|
|
fputs($fp, $this->_finalbody);
|
|
|
|
$status = pclose($fp);
|
|
|
|
if ($status !== 0) {
|
|
$this->_set_error_message('lang:email_exit_status', $status);
|
|
$this->_set_error_message('lang:email_no_socket');
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Send using SMTP
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _send_with_smtp()
|
|
{
|
|
if ($this->smtp_host === '') {
|
|
$this->_set_error_message('lang:email_no_hostname');
|
|
return false;
|
|
}
|
|
|
|
if (! $this->_smtp_connect() or ! $this->_smtp_authenticate()) {
|
|
return false;
|
|
}
|
|
|
|
if (! $this->_send_command('from', $this->clean_email($this->_headers['From']))) {
|
|
$this->_smtp_end();
|
|
return false;
|
|
}
|
|
|
|
foreach ($this->_recipients as $val) {
|
|
if (! $this->_send_command('to', $val)) {
|
|
$this->_smtp_end();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (count($this->_cc_array) > 0) {
|
|
foreach ($this->_cc_array as $val) {
|
|
if ($val !== '' && ! $this->_send_command('to', $val)) {
|
|
$this->_smtp_end();
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (count($this->_bcc_array) > 0) {
|
|
foreach ($this->_bcc_array as $val) {
|
|
if ($val !== '' && ! $this->_send_command('to', $val)) {
|
|
$this->_smtp_end();
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (! $this->_send_command('data')) {
|
|
$this->_smtp_end();
|
|
return false;
|
|
}
|
|
|
|
// perform dot transformation on any lines that begin with a dot
|
|
$this->_send_data($this->_header_str . preg_replace('/^\./m', '..$1', $this->_finalbody));
|
|
|
|
$this->_send_data('.');
|
|
|
|
$reply = $this->_get_smtp_data();
|
|
$this->_set_error_message($reply);
|
|
|
|
$this->_smtp_end();
|
|
|
|
if (strpos($reply, '250') !== 0) {
|
|
$this->_set_error_message('lang:email_smtp_error', $reply);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* SMTP End
|
|
*
|
|
* Shortcut to send RSET or QUIT depending on keep-alive
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _smtp_end()
|
|
{
|
|
($this->smtp_keepalive)
|
|
? $this->_send_command('reset')
|
|
: $this->_send_command('quit');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* SMTP Connect
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _smtp_connect()
|
|
{
|
|
if (is_resource($this->_smtp_connect)) {
|
|
return true;
|
|
}
|
|
|
|
$ssl = ($this->smtp_crypto === 'ssl') ? 'ssl://' : '';
|
|
|
|
$this->_smtp_connect = fsockopen(
|
|
$ssl . $this->smtp_host,
|
|
$this->smtp_port,
|
|
$errno,
|
|
$errstr,
|
|
$this->smtp_timeout
|
|
);
|
|
|
|
if (! is_resource($this->_smtp_connect)) {
|
|
$this->_set_error_message('lang:email_smtp_error', $errno . ' ' . $errstr);
|
|
return false;
|
|
}
|
|
|
|
stream_set_timeout($this->_smtp_connect, $this->smtp_timeout);
|
|
$this->_set_error_message($this->_get_smtp_data());
|
|
|
|
if ($this->smtp_crypto === 'tls') {
|
|
$this->_send_command('hello');
|
|
$this->_send_command('starttls');
|
|
|
|
/**
|
|
* STREAM_CRYPTO_METHOD_TLS_CLIENT is quite the mess ...
|
|
*
|
|
* - On PHP <5.6 it doesn't even mean TLS, but SSL 2.0, and there's no option to use actual TLS
|
|
* - On PHP 5.6.0-5.6.6, >=7.2 it means negotiation with any of TLS 1.0, 1.1, 1.2
|
|
* - On PHP 5.6.7-7.1.* it means only TLS 1.0
|
|
*
|
|
* We want the negotiation, so we'll force it below ...
|
|
*/
|
|
$method = is_php('5.6')
|
|
? STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
|
|
: STREAM_CRYPTO_METHOD_TLS_CLIENT;
|
|
$crypto = stream_socket_enable_crypto($this->_smtp_connect, true, $method);
|
|
|
|
if ($crypto !== true) {
|
|
$this->_set_error_message('lang:email_smtp_error', $this->_get_smtp_data());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return $this->_send_command('hello');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Send SMTP command
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
protected function _send_command($cmd, $data = '')
|
|
{
|
|
switch ($cmd) {
|
|
case 'hello':
|
|
if ($this->_smtp_auth or $this->_get_encoding() === '8bit') {
|
|
$this->_send_data('EHLO ' . $this->_get_hostname());
|
|
} else {
|
|
$this->_send_data('HELO ' . $this->_get_hostname());
|
|
}
|
|
|
|
$resp = 250;
|
|
break;
|
|
case 'starttls':
|
|
$this->_send_data('STARTTLS');
|
|
$resp = 220;
|
|
break;
|
|
case 'from':
|
|
$this->_send_data('MAIL FROM:<' . $data . '>');
|
|
$resp = 250;
|
|
break;
|
|
case 'to':
|
|
if ($this->dsn) {
|
|
$this->_send_data('RCPT TO:<' . $data . '> NOTIFY=SUCCESS,DELAY,FAILURE ORCPT=rfc822;' . $data);
|
|
} else {
|
|
$this->_send_data('RCPT TO:<' . $data . '>');
|
|
}
|
|
|
|
$resp = 250;
|
|
break;
|
|
case 'data':
|
|
$this->_send_data('DATA');
|
|
$resp = 354;
|
|
break;
|
|
case 'reset':
|
|
$this->_send_data('RSET');
|
|
$resp = 250;
|
|
break;
|
|
case 'quit':
|
|
$this->_send_data('QUIT');
|
|
$resp = 221;
|
|
break;
|
|
}
|
|
|
|
$reply = $this->_get_smtp_data();
|
|
|
|
$this->_debug_msg[] = '<pre>' . $cmd . ': ' . $reply . '</pre>';
|
|
|
|
if ((int) self::substr($reply, 0, 3) !== $resp) {
|
|
$this->_set_error_message('lang:email_smtp_error', $reply);
|
|
return false;
|
|
}
|
|
|
|
if ($cmd === 'quit') {
|
|
fclose($this->_smtp_connect);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* SMTP Authenticate
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _smtp_authenticate()
|
|
{
|
|
if (! $this->_smtp_auth) {
|
|
return true;
|
|
}
|
|
|
|
if ($this->smtp_user === '' && $this->smtp_pass === '') {
|
|
$this->_set_error_message('lang:email_no_smtp_unpw');
|
|
return false;
|
|
}
|
|
|
|
$this->_send_data('AUTH LOGIN');
|
|
|
|
$reply = $this->_get_smtp_data();
|
|
|
|
if (strpos($reply, '503') === 0) { // Already authenticated
|
|
return true;
|
|
} elseif (strpos($reply, '334') !== 0) {
|
|
$this->_set_error_message('lang:email_failed_smtp_login', $reply);
|
|
return false;
|
|
}
|
|
|
|
$this->_send_data(base64_encode($this->smtp_user));
|
|
|
|
$reply = $this->_get_smtp_data();
|
|
|
|
if (strpos($reply, '334') !== 0) {
|
|
$this->_set_error_message('lang:email_smtp_auth_un', $reply);
|
|
return false;
|
|
}
|
|
|
|
$this->_send_data(base64_encode($this->smtp_pass));
|
|
|
|
$reply = $this->_get_smtp_data();
|
|
|
|
if (strpos($reply, '235') !== 0) {
|
|
$this->_set_error_message('lang:email_smtp_auth_pw', $reply);
|
|
return false;
|
|
}
|
|
|
|
if ($this->smtp_keepalive) {
|
|
$this->_smtp_auth = false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Send SMTP data
|
|
*
|
|
* @param string $data
|
|
* @return bool
|
|
*/
|
|
protected function _send_data($data)
|
|
{
|
|
$data .= $this->newline;
|
|
for ($written = $timestamp = 0, $length = self::strlen($data); $written < $length; $written += $result) {
|
|
if (($result = fwrite($this->_smtp_connect, self::substr($data, $written))) === false) {
|
|
break;
|
|
}
|
|
// See https://bugs.php.net/bug.php?id=39598 and http://php.net/manual/en/function.fwrite.php#96951
|
|
elseif ($result === 0) {
|
|
if ($timestamp === 0) {
|
|
$timestamp = time();
|
|
} elseif ($timestamp < (time() - $this->smtp_timeout)) {
|
|
$result = false;
|
|
break;
|
|
}
|
|
|
|
usleep(250000);
|
|
continue;
|
|
}
|
|
|
|
$timestamp = 0;
|
|
}
|
|
|
|
if ($result === false) {
|
|
$this->_set_error_message('lang:email_smtp_data_failure', $data);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get SMTP data
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function _get_smtp_data()
|
|
{
|
|
$data = '';
|
|
|
|
while ($str = fgets($this->_smtp_connect, 512)) {
|
|
$data .= $str;
|
|
|
|
if ($str[3] === ' ') {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $data;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get Hostname
|
|
*
|
|
* There are only two legal types of hostname - either a fully
|
|
* qualified domain name (eg: "mail.example.com") or an IP literal
|
|
* (eg: "[1.2.3.4]").
|
|
*
|
|
* @link https://tools.ietf.org/html/rfc5321#section-2.3.5
|
|
* @link http://cbl.abuseat.org/namingproblems.html
|
|
* @return string
|
|
*/
|
|
protected function _get_hostname()
|
|
{
|
|
if (isset($_SERVER['SERVER_NAME'])) {
|
|
return $_SERVER['SERVER_NAME'];
|
|
}
|
|
|
|
return isset($_SERVER['SERVER_ADDR']) ? '[' . $_SERVER['SERVER_ADDR'] . ']' : '[127.0.0.1]';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get Debug Message
|
|
*
|
|
* @param array $include List of raw data chunks to include in the output
|
|
* Valid options are: 'headers', 'subject', 'body'
|
|
* @return string
|
|
*/
|
|
public function print_debugger($include = array('headers', 'subject', 'body'))
|
|
{
|
|
$msg = '';
|
|
|
|
if (count($this->_debug_msg) > 0) {
|
|
foreach ($this->_debug_msg as $val) {
|
|
$msg .= $val;
|
|
}
|
|
}
|
|
|
|
// Determine which parts of our raw data needs to be printed
|
|
$raw_data = '';
|
|
is_array($include) or $include = array($include);
|
|
|
|
if (in_array('headers', $include, true)) {
|
|
$raw_data = htmlspecialchars($this->_header_str) . "\n";
|
|
}
|
|
|
|
if (in_array('subject', $include, true)) {
|
|
$raw_data .= htmlspecialchars($this->_subject) . "\n";
|
|
}
|
|
|
|
if (in_array('body', $include, true)) {
|
|
$raw_data .= htmlspecialchars($this->_finalbody);
|
|
}
|
|
|
|
return $msg . ($raw_data === '' ? '' : '<pre>' . $raw_data . '</pre>');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Message
|
|
*
|
|
* @param string $msg
|
|
* @param string $val = ''
|
|
* @return void
|
|
*/
|
|
protected function _set_error_message($msg, $val = '')
|
|
{
|
|
$CI = & get_instance();
|
|
$CI->lang->load('email');
|
|
|
|
if (sscanf($msg, 'lang:%s', $line) !== 1 or false === ($line = $CI->lang->line($line))) {
|
|
$this->_debug_msg[] = str_replace('%s', $val, $msg) . '<br />';
|
|
} else {
|
|
$this->_debug_msg[] = str_replace('%s', $val, $line) . '<br />';
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Mime Types
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
protected function _mime_types($ext = '')
|
|
{
|
|
$ext = strtolower($ext);
|
|
|
|
$mimes = & get_mimes();
|
|
|
|
if (isset($mimes[$ext])) {
|
|
return is_array($mimes[$ext])
|
|
? current($mimes[$ext])
|
|
: $mimes[$ext];
|
|
}
|
|
|
|
return 'application/x-unknown-content-type';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Destructor
|
|
*
|
|
* @return void
|
|
*/
|
|
public function __destruct()
|
|
{
|
|
is_resource($this->_smtp_connect) && $this->_send_command('quit');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Byte-safe strlen()
|
|
*
|
|
* @param string $str
|
|
* @return int
|
|
*/
|
|
protected static function strlen($str)
|
|
{
|
|
return (self::$func_overload)
|
|
? mb_strlen($str, '8bit')
|
|
: strlen($str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Byte-safe substr()
|
|
*
|
|
* @param string $str
|
|
* @param int $start
|
|
* @param int $length
|
|
* @return string
|
|
*/
|
|
protected static function substr($str, $start, $length = null)
|
|
{
|
|
if (self::$func_overload) {
|
|
// mb_substr($str, $start, null, '8bit') returns an empty
|
|
// string on PHP 5.3
|
|
isset($length) or $length = ($start >= 0 ? self::strlen($str) - $start : -$start);
|
|
return mb_substr($str, $start, $length, '8bit');
|
|
}
|
|
|
|
return isset($length)
|
|
? substr($str, $start, $length)
|
|
: substr($str, $start);
|
|
}
|
|
}
|