sendmail.php
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sendmail.php
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	<?php
	/**
	* Sendmail implementation of the PEAR Mail interface.
	*
	* PHP version 5
	*
	* LICENSE:
	*
	* Copyright (c) 2010-2017, Chuck Hagenbuch & Jon Parise
	* 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 Jon Parise <jon@php.net>
	* @author Chuck Hagenbuch <chuck@horde.org>
	* @copyright 2010-2017 Chuck Hagenbuch
	* @license http://opensource.org/licenses/BSD-3-Clause New BSD License
	* @version CVS: $Id$
	* @link http://pear.php.net/package/Mail/
	*/

	/**
	* Sendmail implementation of the PEAR Mail:: interface.
	* @access public
	* @package Mail
	* @version $Revision$
	*/
	class Mail_sendmail extends Mail {

	/**
	* The location of the sendmail or sendmail wrapper binary on the
	* filesystem.
	* @var string
	*/
	var $sendmail_path = '/usr/sbin/sendmail';

	/**
	* Any extra command-line parameters to pass to the sendmail or
	* sendmail wrapper binary.
	* @var string
	*/
	var $sendmail_args = '-i';

	/**
	* Constructor.
	*
	* Instantiates a new Mail_sendmail:: object based on the parameters
	* passed in. It looks for the following parameters:
	* sendmail_path The location of the sendmail binary on the
	* filesystem. Defaults to '/usr/sbin/sendmail'.
	*
	* sendmail_args Any extra parameters to pass to the sendmail
	* or sendmail wrapper binary.
	*
	* If a parameter is present in the $params array, it replaces the
	* default.
	*
	* @param array $params Hash containing any parameters different from the
	* defaults.
	*/
	public function __construct($params)
	{
	if (isset($params['sendmail_path'])) {
	$this->sendmail_path = $params['sendmail_path'];
	}
	if (isset($params['sendmail_args'])) {
	$this->sendmail_args = $params['sendmail_args'];
	}

	/*
	* Because we need to pass message headers to the sendmail program on
	* the commandline, we can't guarantee the use of the standard "\r\n"
	* separator. Instead, we use the system's native line separator.
	*/
	if (defined('PHP_EOL')) {
	$this->sep = PHP_EOL;
	} else {
	$this->sep = (strpos(PHP_OS, 'WIN') === false) ? "\n" : "\r\n";
	}
	}

	/**
	* Implements Mail::send() function using the sendmail
	* command-line binary.
	*
	* @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 $body The full text of the message body, including any
	* Mime parts, etc.
	*
	* @return mixed Returns true on success, or a PEAR_Error
	* containing a descriptive error message on
	* failure.
	*/
	public function send($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;
	}

	$recipients = $this->parseRecipients($recipients);
	if (is_a($recipients, 'PEAR_Error')) {
	return $recipients;
	}
	$recipients = implode(' ', array_map('escapeshellarg', $recipients));

	$headerElements = $this->prepareHeaders($headers);
	if (is_a($headerElements, 'PEAR_Error')) {
	return $headerElements;
	}
	list($from, $text_headers) = $headerElements;

	/* Since few MTAs are going to allow this header to be forged
	* unless it's in the MAIL FROM: exchange, we'll use
	* Return-Path instead of From: if it's set. */
	if (!empty($headers['Return-Path'])) {
	$from = $headers['Return-Path'];
	}

	if (!isset($from)) {
	return PEAR::raiseError('No from address given.');
	} elseif (strpos($from, ' ') !== false \|\|
	strpos($from, ';') !== false \|\|
	strpos($from, '&') !== false \|\|
	strpos($from, '`') !== false) {
	return PEAR::raiseError('From address specified with dangerous characters.');
	}

	$from = escapeshellarg($from); // Security bug #16200

	$mail = @popen($this->sendmail_path . (!empty($this->sendmail_args) ? ' ' . $this->sendmail_args : '') . " -f$from -- $recipients", 'w');
	if (!$mail) {
	return PEAR::raiseError('Failed to open sendmail [' . $this->sendmail_path . '] for execution.');
	}

	// Write the headers following by two newlines: one to end the headers
	// section and a second to separate the headers block from the body.
	fputs($mail, $text_headers . $this->sep . $this->sep);

	fputs($mail, $body);
	$result = pclose($mail);
	if (version_compare(phpversion(), '4.2.3') == -1) {
	// With older php versions, we need to shift the pclose
	// result to get the exit code.
	$result = $result >> 8 & 0xFF;
	}

	if ($result != 0) {
	return PEAR::raiseError('sendmail returned error code ' . $result,
	$result);
	}

	return true;
	}

	}

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