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<?php /** * PEAR's Mail:: interface. * * PHP version 5 * * LICENSE: * * Copyright (c) 1997-2017, Chuck Hagenbuch & Richard Heyes * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * @category Mail * @package Mail * @author Chuck Hagenbuch <chuck@horde.org> * @copyright 1997-2017 Chuck Hagenbuch * @license http://opensource.org/licenses/BSD-3-Clause New BSD License * @version CVS: $Id$ * @link http://pear.php.net/package/Mail/ */ require_once 'PEAR.php'; /** * PEAR's Mail:: interface. Defines the interface for implementing * mailers under the PEAR hierarchy, and provides supporting functions * useful in multiple mailer backends. * * @version $Revision$ * @package Mail */ class Mail { /** * Line terminator used for separating header lines. * @var string */ public $sep = "\r\n"; /** * Provides an interface for generating Mail:: objects of various * types * * @param string $driver The kind of Mail:: object to instantiate. * @param array $params The parameters to pass to the Mail:: object. * * @return object Mail a instance of the driver class or if fails a PEAR Error */ public static function factory($driver, $params = array()) { $driver = strtolower($driver); @include_once 'Mail/' . $driver . '.php'; $class = 'Mail_' . $driver; if (class_exists($class)) { $mailer = new $class($params); return $mailer; } else { return PEAR::raiseError('Unable to find class for driver ' . $driver); } } /** * Implements Mail::send() function using php's built-in mail() * command. * * @param mixed $recipients Either a comma-seperated list of recipients * (RFC822 compliant), or an array of recipients, * each RFC822 valid. This may contain recipients not * specified in the headers, for Bcc:, resending * messages, etc. * * @param array $headers The array of headers to send with the mail, in an * associative array, where the array key is the * header name (ie, 'Subject'), and the array value * is the header value (ie, 'test'). The header * produced from those values would be 'Subject: * test'. * * @param string $body The full text of the message body, including any * Mime parts, etc. * * @return mixed Returns true on success, or a PEAR_Error * containing a descriptive error message on * failure. * * @deprecated use Mail_mail::send instead */ public function send($recipients, $headers, $body) { if (!is_array($headers)) { return PEAR::raiseError('$headers must be an array'); } $result = $this->_sanitizeHeaders($headers); if (is_a($result, 'PEAR_Error')) { return $result; } // if we're passed an array of recipients, implode it. if (is_array($recipients)) { $recipients = implode(', ', $recipients); } // get the Subject out of the headers array so that we can // pass it as a seperate argument to mail(). $subject = ''; if (isset($headers['Subject'])) { $subject = $headers['Subject']; unset($headers['Subject']); } // flatten the headers out. list(, $text_headers) = Mail::prepareHeaders($headers); return mail($recipients, $subject, $body, $text_headers); } /** * Sanitize an array of mail headers by removing any additional header * strings present in a legitimate header's value. The goal of this * filter is to prevent mail injection attacks. * * @param array $headers The associative array of headers to sanitize. */ protected function _sanitizeHeaders(&$headers) { foreach ($headers as $key => $value) { $headers[$key] = preg_replace('=((<CR>|<LF>|0x0A/%0A|0x0D/%0D|\\n|\\r)\S).*=i', null, $value); } } /** * Take an array of mail headers and return a string containing * text usable in sending a message. * * @param array $headers The array of headers to prepare, in an associative * array, where the array key is the header name (ie, * 'Subject'), and the array value is the header * value (ie, 'test'). The header produced from those * values would be 'Subject: test'. * * @return mixed Returns false if it encounters a bad address, * otherwise returns an array containing two * elements: Any From: address found in the headers, * and the plain text version of the headers. */ protected function prepareHeaders($headers) { $lines = array(); $from = null; foreach ($headers as $key => $value) { if (strcasecmp($key, 'From') === 0) { include_once 'Mail/RFC822.php'; $parser = new Mail_RFC822(); $addresses = $parser->parseAddressList($value, 'localhost', false); if (is_a($addresses, 'PEAR_Error')) { return $addresses; } $from = $addresses[0]->mailbox . '@' . $addresses[0]->host; // Reject envelope From: addresses with spaces. if (strstr($from, ' ')) { return false; } $lines[] = $key . ': ' . $value; } elseif (strcasecmp($key, 'Received') === 0) { $received = array(); if (is_array($value)) { foreach ($value as $line) { $received[] = $key . ': ' . $line; } } else { $received[] = $key . ': ' . $value; } // Put Received: headers at the top. Spam detectors often // flag messages with Received: headers after the Subject: // as spam. $lines = array_merge($received, $lines); } else { // If $value is an array (i.e., a list of addresses), convert // it to a comma-delimited string of its elements (addresses). if (is_array($value)) { $value = implode(', ', $value); } $lines[] = $key . ': ' . $value; } } return array($from, join($this->sep, $lines)); } /** * Take a set of recipients and parse them, returning an array of * bare addresses (forward paths) that can be passed to sendmail * or an smtp server with the rcpt to: command. * * @param mixed Either a comma-seperated list of recipients * (RFC822 compliant), or an array of recipients, * each RFC822 valid. * * @return mixed An array of forward paths (bare addresses) or a PEAR_Error * object if the address list could not be parsed. */ protected function parseRecipients($recipients) { include_once 'Mail/RFC822.php'; // if we're passed an array, assume addresses are valid and // implode them before parsing. if (is_array($recipients)) { $recipients = implode(', ', $recipients); } // Parse recipients, leaving out all personal info. This is // for smtp recipients, etc. All relevant personal information // should already be in the headers. $Mail_RFC822 = new Mail_RFC822(); $addresses = $Mail_RFC822->parseAddressList($recipients, 'localhost', false); // If parseAddressList() returned a PEAR_Error object, just return it. if (is_a($addresses, 'PEAR_Error')) { return $addresses; } $recipients = array(); if (is_array($addresses)) { foreach ($addresses as $ob) { $recipients[] = $ob->mailbox . '@' . $ob->host; } } return $recipients; } }
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