<?php
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/*
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Copyright (c) 2012, Marius Cramer, pixcept KG
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of ISPConfig nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* email class
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*
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* @package pxFramework
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*
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*/
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class ispcmail {
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/**#@+
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* @access private
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*/
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private $html_part;
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private $text_part;
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private $headers;
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private $_logged_in = false;
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private $_smtp_conn = null;
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private $_crlf = "\n";
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private $attach_type = 'application/octet-stream';
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private $attachments;
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private $mime_boundary;
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private $body = '';
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private $_mail_sender = '';
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private $_sent_mails = 0;
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private $user_agent = 'ISPConfig/3 (Mailer Class)';
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/**#@-*/
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/**
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* set the mail charset
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*/
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private $mail_charset = 'UTF-8';//'ISO-8859-1';
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/**#@+
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* Provide smtp credentials for smtp mail sending
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*
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* @access public
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*/
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/**
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* if set to true smtp is used instead of mail() to send emails
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* @see mail
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*/
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private $use_smtp = false;
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/**
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* the smtp helo string - use the mail server name here!
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*/
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private $smtp_helo = '';
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/**
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* the smtp server to send mails
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*/
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private $smtp_host = '';
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/**
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* the smtp port
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*/
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private $smtp_port = 25;
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/**
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* if the smtp server needs authentication you can set the smtp user here
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*/
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private $smtp_user = '';
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/**
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* if the smtp server needs authentication you can set the smtp password here
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*/
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private $smtp_pass = '';
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/**
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* If you want to use tls/ssl specify it here
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*/
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private $smtp_crypt = ''; // tls or ssl
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/**
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* How many mails should be sent via one single smtp connection
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*/
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private $smtp_max_mails = 20;
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/**
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* Should the mail be signed
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*/
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private $sign_email = false;
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/**
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* The cert and key to use for email signing
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*/
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private $sign_key = '';
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private $sign_key_pass = '';
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private $sign_cert = '';
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private $sign_bundle = '';
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private $_is_signed = false;
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/**
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* get disposition notification
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*/
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private $notification = false;
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/**#@-*/
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public function __construct($options = array()) {
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$rand = md5(microtime());
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$this->mime_boundary = '==Multipart_Boundary_x' . $rand . 'x';
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$this->headers = array();
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$this->attachments = array();
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$this->headers['MIME-Version'] = '1.0';
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$this->headers['User-Agent'] = $this->user_agent;
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if(is_array($options) && count($options) > 0) $this->setOptions($options);
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}
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public function __destruct() {
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$this->finish();
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}
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/**
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* Set option
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*
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* @param string $key the option to set
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* @param string $value the option value to set
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*/
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public function setOption($key, $value) {
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switch($key) {
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case 'smtp_helo':
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$this->smtp_helo = $value;
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break;
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case 'smtp_host':
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$this->smtp_host = $value;
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break;
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case 'smtp_server':
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$this->smtp_host = $value;
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break;
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case 'smtp_port':
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$this->smtp_port = $value;
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break;
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case 'smtp_user':
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$this->smtp_user = $value;
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break;
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case 'smtp_pass':
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$this->smtp_pass = $value;
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break;
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case 'smtp_max_mails':
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$this->smtp_max_mails = intval($value);
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if($this->smtp_max_mails < 1) $this->smtp_max_mails = 1;
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break;
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case 'use_smtp':
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$this->use_smtp = ($value == true ? true : false);
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if($value == true) $this->_crlf = "\r\n";
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break;
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case 'smtp_crypt':
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if($value != 'ssl' && $value != 'tls') $value = '';
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$this->smtp_crypt = $value;
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break;
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case 'sign_email':
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$this->sign_email = ($value == true ? true : false);
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break;
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case 'sign_key':
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$this->sign_key = $value;
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break;
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case 'sign_key_pass':
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$this->sign_key_pass = $value;
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break;
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case 'sign_cert':
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$this->sign_cert = $value;
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break;
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case 'sign_bundle':
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$this->sign_bundle = $value;
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break;
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case 'mail_charset':
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$this->mail_charset = $value;
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break;
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case 'notify':
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$this->notification = ($value == true ? true : false);
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break;
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}
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}
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/** Detect the helo string if none given
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*
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*/
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private function detectHelo() {
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if(isset($_SERVER['HTTP_HOST'])) $this->smtp_helo = $_SERVER['HTTP_HOST'];
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elseif(isset($_SERVER['SERVER_NAME'])) $this->smtp_helo = $_SERVER['SERVER_NAME'];
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else $this->smtp_helo = php_uname('n');
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if($this->smtp_helo == '') $this->smtp_helo = 'localhost';
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}
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/**
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* Set options
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*
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* @param array $options the options to set as an associative array key => value
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*/
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public function setOptions($options) {
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foreach($options as $key => $value) $this->setOption($key, $value);
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}
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/**
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* Read a file's contents
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*
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* Simply gets the file's content
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*
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* @access public
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* @param string $filename name and path of file to read
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* @return string file content (can be binary)
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*/
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public function read_File($filename) {
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$content = '';
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$fp = fopen($filename, 'r');
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if(!$fp) return false;
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while(!feof($fp)) {
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$content .= fread($fp, 1024);
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}
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fclose($fp);
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return $content;
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}
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/**
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* set smtp connection encryption
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*
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* @access public
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* @param string $mode encryption mode (tls, ssl or empty string)
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*/
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public function setSMTPEncryption($mode = '') {
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if($mode != 'ssl' && $mode != 'tls') $mode = '';
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$this->smtp_crypt = $mode;
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}
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/**
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* set a mail header
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*
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* Sets a single mail header to a given value
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*
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* @access public
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* @param string $header header name to set
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* @param string $value value to set in header field
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*/
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public function setHeader($header, $value) {
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if(strtolower($header) == 'bcc') $header = 'Bcc';
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elseif(strtolower($header) == 'cc') $header = 'Cc';
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elseif(strtolower($header) == 'from') $header = 'From';
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$this->headers["$header"] = $value;
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}
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/**
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* get a mail header value
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*
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* Returns a value of a single mail header
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*
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* @access public
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* @param string $header header name to get
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* @return string header value
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*/
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public function getHeader($header) {
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if(strtolower($header) == 'bcc') $header = 'Bcc';
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elseif(strtolower($header) == 'cc') $header = 'Cc';
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elseif(strtolower($header) == 'from') $header = 'From';
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return isset($this->headers["$header"]) ? $this->headers["$header"] : '';
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}
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/**
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* Set email sender
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*
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* Sets the email sender and optionally the sender's name
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*
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* @access public
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* @param string $email sender email address
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* @param string $name sender name
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*/
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public function setSender($email, $name = '') {
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if($name) $header = '"' . $name . '" <' . $email . '>';
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else $header = '<' . $email . '>';
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$this->_mail_sender = $email;
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$this->setHeader('From', $header);
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}
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/**
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* Set mail subject
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*
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* @access public
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* @param string $subject the mail subject
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* @return string where-string for db query
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*/
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public function setSubject($subject) {
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$this->setHeader('Subject', $subject);
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}
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/**
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* Get current mail subject
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*
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* @access public
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* @return string mail subject
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*/
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public function getSubject() {
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return $this->headers['Subject'];
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}
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/**
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* Set mail content
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*
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* Sets the mail html and plain text content
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*
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* @access public
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* @param string $text plain text mail content (can be empty)
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* @param string $html html mail content
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*/
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public function setMailText($text, $html = '') {
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$this->text_part = $text;
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$this->html_part = $html;
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}
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/**
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* Read and attach a file
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*
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* Reads a file and attaches it to the current email
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*
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* @access public
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* @param string $filename the file to read and attach
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* @param string $display_name the name that will be displayed in the mail
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* @see read_File
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*/
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public function readAttachFile($filename, $display_name = '') {
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if($display_name == '') {
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$path_parts = pathinfo($filename);
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$display_name = $path_parts["basename"];
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unset($path_parts);
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}
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$this->attachFile($this->read_File($filename), $display_name);
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}
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/**
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* Attach a file
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*
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* Attaches a string (can be binary) as a file to the mail
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*
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* @access public
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* @param string $content attachment data string
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* @param string $filename name for file attachment
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*/
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public function attachFile($content, $filename) {
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$attachment = array('content' => $content,
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'filename' => $filename,
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'type' => 'application/octet-stream',
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'encoding' => 'base64'
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);
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$this->attachments[] = $attachment;
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}
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/**
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* @access private
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*/
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private function create() {
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$attach = false;
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$html = false;
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$text = false;
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if($this->html_part) $html = true;
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if($this->text_part) $text = true;
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if(count($this->attachments) > 0) $attach = true;
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$textonly = false;
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$htmlonly = false;
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if($text == true && $html == false && $attach == false) {
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// only text
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$content_type = 'text/plain; charset="' . strtolower($this->mail_charset) . '"';
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$textonly = true;
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} elseif($text == true && $html == false && $attach == true) {
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// text and attachment
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$content_type = 'multipart/mixed;';
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$content_type .= "\n" . ' boundary="' . $this->mime_boundary . '"';
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} elseif($html == true && $text == true && $attach == false) {
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// html only (or text too)
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$content_type = 'multipart/alternative;';
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$content_type .= "\n" . ' boundary="' . $this->mime_boundary . '"';
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} elseif($html == true && $text == false && $attach == false) {
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// html only (or text too)
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$content_type = 'text/html; charset="' . strtolower($this->mail_charset) . '"';
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$htmlonly = true;
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} elseif($html == true && $attach == true) {
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// html and attachments
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$content_type = 'multipart/mixed;';
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$content_type .= "\n" . ' boundary="' . $this->mime_boundary . '"';
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}
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$this->headers['Content-Type'] = $content_type;
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if($textonly == false && $htmlonly == false) {
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$this->body = "This is a multi-part message in MIME format.\n\n";
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if($text) {
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/*$this->body .= "--{$this->mime_boundary}\n" .
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"Content-Type:text/plain; charset=\"" . strtolower($this->mail_charset) . "\"\n" .
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"Content-Transfer-Encoding: 7bit\n\n" . $this->text_part . "\n\n";*/
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$this->body .= "--{$this->mime_boundary}\n" .
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"Content-Type:text/plain; charset=\"UTF-8\"\n" .
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"Content-Transfer-Encoding: 8bit\n\n" . $this->text_part . "\n\n";
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}
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if($html) {
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/*$this->body .= "--{$this->mime_boundary}\n" .
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"Content-Type:text/html; charset=\"" . strtolower($this->mail_charset) . "\"\n" .
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"Content-Transfer-Encoding: 7bit\n\n" . $this->html_part . "\n\n";*/
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$this->body .= "--{$this->mime_boundary}\n" .
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"Content-Type:text/html; charset=\"UTF-8\"\n" .
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"Content-Transfer-Encoding: 8bit\n\n" . $this->html_part . "\n\n";
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}
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if($attach) {
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foreach($this->attachments as $att) {
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$this->body .= "--{$this->mime_boundary}\n" .
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"Content-Type: " . $att['type'] . ";\n" .
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" name=\"" . $att['filename'] . "\"\n" .
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"Content-Transfer-Encoding: base64\n" .
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"Content-Disposition: attachment;\n\n" .
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chunk_split(base64_encode($att['content'])) . "\n\n";
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}
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}
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$this->body .= "--{$this->mime_boundary}--\n";
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} elseif($htmlonly == true) {
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$this->body = $this->html_part;
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} else {
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$this->body = $this->text_part;
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}
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if (isset($this->body)) {
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// Add message ID header
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$message_id = sprintf('<%s.%s@%s>', base_convert(time(), 10, 36), base_convert(rand(), 10, 36), $this->smtp_helo != '' ? $this->smtp_helo : $this->detectHelo());
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$this->headers['Message-ID'] = $message_id;
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return true;
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} else {
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return false;
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}
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}
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/**
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* Function to sign an email body
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*/
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private function sign() {
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if($this->sign_email == false || $this->sign_key == '' || $this->sign_cert == '') return false;
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if(function_exists('openssl_pkcs7_sign') == false) return false;
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$tmpin = tempnam(sys_get_temp_dir(), 'sign');
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$tmpout = tempnam(sys_get_temp_dir(), 'sign');
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if(!file_exists($tmpin) || !is_writable($tmpin)) return false;
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file_put_contents($tmpin, 'Content-Type: ' . $this->getHeader('Content-Type') . "\n\n" . $this->body);
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$tmpf_key = tempnam(sys_get_temp_dir(), 'sign');
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file_put_contents($tmpf_key, $this->sign_key);
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$tmpf_cert = tempnam(sys_get_temp_dir(), 'sign');
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file_put_contents($tmpf_cert, $this->sign_cert);
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if($this->sign_bundle != '') {
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$tmpf_bundle = tempnam(sys_get_temp_dir(), 'sign');
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file_put_contents($tmpf_bundle, $this->sign_bundle);
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openssl_pkcs7_sign($tmpin, $tmpout, 'file://' . realpath($tmpf_cert), array('file://' . realpath($tmpf_key), $this->sign_key_pass), array(), PKCS7_DETACHED, realpath($tmpf_bundle));
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} else {
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openssl_pkcs7_sign($tmpin, $tmpout, 'file://' . realpath($tmpf_cert), array('file://' . realpath($tmpf_key), $this->sign_key_pass), array());
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}
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unlink($tmpin);
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unlink($tmpf_cert);
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unlink($tmpf_key);
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if(file_exists($tmpf_bundle)) unlink($tmpf_bundle);
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if(!file_exists($tmpout) || !is_readable($tmpout)) return false;
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$this->body = file_get_contents($tmpout);
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unlink($tmpout);
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unset($this->headers['Content-Type']);
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unset($this->headers['MIME-Version']);
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$this->_is_signed = true;
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}
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private function _char_to_hex($matches) {
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return '=' . strtoupper(dechex(ord($matches[1])));
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}
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/**
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* Function to encode a header if necessary
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* according to RFC2047
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* @access private
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*/
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private function _encodeHeader($input, $charset = 'ISO-8859-1') {
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preg_match_all('/(\s?\w*[\x80-\xFF]+\w*\s?)/', $input, $matches);
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foreach ($matches[1] as $value) {
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$replacement = preg_replace_callback('/([\x20\x80-\xFF])/', array($this, '_char_to_hex'), $value);
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$input = str_replace($value, '=?' . $charset . '?Q?' . $replacement . '?=', $input);
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}
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return $input;
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}
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|
|
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/**
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* Function to encode the subject if necessary
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* according to RFC2047
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* @access private
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*/
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private function _encodeSubject($input, $charset = 'ISO-8859-1') {
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/*
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if($charset == 'UTF-8' && function_exists('imap_8bit')) {
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$input = "=?utf-8?Q?" . imap_8bit($input) . "?=";
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} else {
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preg_match_all('/(\s?\w*[\x80-\xFF]+\w*\s?)/', $input, $matches);
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foreach ($matches[1] as $value) {
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$replacement = preg_replace('/([\x20\x80-\xFF])/e', '"=" . strtoupper(dechex(ord("\1")))', $value);
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$input = str_replace($value, '=?' . $charset . '?Q?' . $replacement . '?=', $input);
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}
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}*/
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$input='=?UTF-8?B?'.base64_encode($input).'?=';
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return $input;
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}
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|
|
|
/**
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* @access private
|
*/
|
private function _smtp_login() {
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$this->_smtp_conn = fsockopen(($this->smtp_crypt == 'ssl' ? 'ssl://' : '') . $this->smtp_host, $this->smtp_port, $errno, $errstr, 30);
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$response = fgets($this->_smtp_conn, 515);
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if(empty($this->_smtp_conn)) return false;
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// ENCRYPTED?
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if($this->smtp_crypt == 'tls') {
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fputs($this->_smtp_conn, 'STARTTLS' . $this->_crlf);
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fgets($this->_smtp_conn, 515);
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stream_socket_enable_crypto($this->_smtp_conn, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
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}
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//Say Hello to SMTP
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if($this->smtp_helo == '') $this->detectHelo();
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fputs($this->_smtp_conn, 'HELO ' . $this->smtp_helo . $this->_crlf);
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$response = fgets($this->_smtp_conn, 515);
|
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//AUTH LOGIN
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fputs($this->_smtp_conn, 'AUTH LOGIN' . $this->_crlf);
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$response = fgets($this->_smtp_conn, 515);
|
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//Send username
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fputs($this->_smtp_conn, base64_encode($this->smtp_user) . $this->_crlf);
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$response = fgets($this->_smtp_conn, 515);
|
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//Send password
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fputs($this->_smtp_conn, base64_encode($this->smtp_pass) . $this->_crlf);
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$response = fgets($this->_smtp_conn, 515);
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$this->_logged_in = true;
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return true;
|
}
|
|
|
|
/**
|
* @access private
|
*/
|
private function _smtp_close() {
|
$this->_logged_in = false;
|
|
if(empty($this->_smtp_conn)) {
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return false;
|
}
|
|
fputs($this->_smtp_conn, 'QUIT' . $this->_crlf);
|
$response = @fgets($this->_smtp_conn, 515);
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return true;
|
}
|
|
|
|
/**
|
* Send the mail to one or more recipients
|
*
|
* The recipients can be either a string (1 recipient email without name) or an associative array of recipients with names as keys and email addresses as values.
|
*
|
* @access public
|
* @param mixed $recipients one email address or array of recipients with names as keys and email addresses as values
|
*/
|
public function send($recipients) {
|
if(!is_array($recipients)) $recipients = array($recipients);
|
|
if($this->use_smtp == true) $this->_crlf = "\r\n";
|
else $this->_crlf = "\n";
|
|
$this->create();
|
if($this->sign_email == true) $this->sign();
|
|
$subject = '';
|
if (!empty($this->headers['Subject'])) {
|
//$subject = $this->_encodeHeader($this->headers['Subject'], $this->mail_charset);
|
$subject = $this->headers['Subject'];
|
|
//$enc_subject = $this->_encodeHeader($subject, $this->mail_charset);
|
$enc_subject = $this->_encodeSubject($subject, $this->mail_charset);
|
unset($this->headers['Subject']);
|
}
|
|
if($this->notification == true) $this->setHeader('Disposition-Notification-To', $this->getHeader('From'));
|
|
unset($this->headers['To']); // always reset the To header to prevent from sending to multiple users at once
|
$this->headers['Date'] = date('r'); //date('D, d M Y H:i:s O');
|
|
// Get flat representation of headers
|
foreach ($this->headers as $name => $value) {
|
if(strtolower($name) == 'to' || strtolower($name) == 'cc' || strtolower($name) == 'bcc') continue; // never add the To header
|
$headers[] = $name . ': ' . $this->_encodeHeader($value, $this->mail_charset);
|
}
|
|
if($this->use_smtp == true) {
|
if(!$this->_logged_in || !$this->_smtp_conn) {
|
$result = $this->_smtp_login();
|
if(!$result) return false;
|
}
|
foreach($recipients as $recipname => $recip) {
|
if($this->_sent_mails >= $this->smtp_max_mails) {
|
// close connection to smtp and reconnect
|
$this->_sent_mails = 0;
|
$this->_smtp_close();
|
$result = $this->_smtp_login();
|
if(!$result) return false;
|
}
|
$this->_sent_mails += 1;
|
|
$recipname = trim(str_replace('"', '', $recipname));
|
$recip = $this->_encodeHeader($recip, $this->mail_charset);
|
$recipname = $this->_encodeHeader($recipname, $this->mail_charset);
|
|
//Email From
|
fputs($this->_smtp_conn, 'MAIL FROM: ' . $this->_mail_sender . $this->_crlf);
|
$response = fgets($this->_smtp_conn, 515);
|
|
//Email To
|
fputs($this->_smtp_conn, 'RCPT TO: ' . $recip . $this->_crlf);
|
$response = fgets($this->_smtp_conn, 515);
|
|
//The Email
|
fputs($this->_smtp_conn, 'DATA' . $this->_crlf);
|
$response = fgets($this->_smtp_conn, 515);
|
|
//Construct Headers
|
if($recipname && !is_numeric($recipname)) $this->setHeader('To', $recipname . ' <' . $recip . '>');
|
else $this->setHeader('To', $recip);
|
|
$mail_content = 'Subject: ' . $enc_subject . $this->_crlf;
|
$mail_content .= 'To: ' . $this->getHeader('To') . $this->_crlf;
|
if($this->getHeader('Bcc') != '') $mail_content .= 'Bcc: ' . $this->_encodeHeader($this->getHeader('Bcc'), $this->mail_charset) . $this->_crlf;
|
if($this->getHeader('Cc') != '') $mail_content .= 'Cc: ' . $this->_encodeHeader($this->getHeader('Cc'), $this->mail_charset) . $this->_crlf;
|
$mail_content .= implode($this->_crlf, $headers) . $this->_crlf . ($this->_is_signed == false ? $this->_crlf : '') . $this->body;
|
|
fputs($this->_smtp_conn, $mail_content . $this->_crlf . '.' . $this->_crlf);
|
$response = fgets($this->_smtp_conn, 515);
|
|
// hopefully message was correctly sent now
|
$result = true;
|
}
|
} else {
|
if($this->getHeader('Bcc') != '') $headers[] = 'Bcc: ' . $this->_encodeHeader($this->getHeader('Bcc'), $this->mail_charset);
|
if($this->getHeader('Cc') != '') $headers[] = 'Cc: ' . $this->_encodeHeader($this->getHeader('Cc'), $this->mail_charset);
|
$rec_string = '';
|
foreach($recipients as $recipname => $recip) {
|
$recipname = trim(str_replace('"', '', $recipname));
|
|
if($rec_string != '') $rec_string .= ', ';
|
if($recipname && !is_numeric($recipname)) $rec_string .= $recipname . '<' . $recip . '>';
|
else $rec_string .= $recip;
|
}
|
$to = $this->_encodeHeader($rec_string, $this->mail_charset);
|
//$result = mail($to, $subject, $this->body, implode($this->_crlf, $headers));
|
$result = mail($to, $enc_subject, $this->body, implode($this->_crlf, $headers));
|
}
|
|
// Reset the subject in case mail is resent
|
if ($subject !== '') {
|
$this->headers['Subject'] = $subject;
|
}
|
|
// Return
|
return $result;
|
}
|
|
|
|
/**
|
* Close mail connections
|
*
|
* This closes an open smtp connection so you should always call this function in your script if you have finished sending all emails
|
*
|
* @access public
|
*/
|
public function finish() {
|
if($this->use_smtp == true) $this->_smtp_close();
|
|
$rand = md5(microtime());
|
$this->mime_boundary = '==Multipart_Boundary_x' . $rand . 'x';
|
|
$this->headers = array();
|
$this->attachments = array();
|
$this->text_part = '';
|
$this->html_part = '';
|
|
$this->headers['MIME-Version'] = '1.0';
|
$this->headers['User-Agent'] = $this->user_agent;
|
|
$this->smtp_helo = '';
|
$this->smtp_host = '';
|
$this->smtp_port = '';
|
$this->smtp_user = '';
|
$this->smtp_pass = '';
|
$this->use_smtp = false;
|
$this->smtp_crypt = false;
|
$this->mail_charset = 'UTF-8';
|
$this->_sent_mails = 0;
|
|
return;
|
}
|
|
}
|
|
?>
|
