<?php
/**
 * Send mail using mail() function
 *
 * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 * @link          https://cakephp.org CakePHP(tm) Project
 * @package       Cake.Network.Email
 * @since         CakePHP(tm) v 2.0.0
 * @license       https://opensource.org/licenses/mit-license.php MIT License
 */
App::uses('AbstractTransport', 'Network/Email');

/**
 * Send mail using mail() function
 *
 * @package       Cake.Network.Email
 */
class MailTransport extends AbstractTransport {

/**
 * Send mail
 *
 * @param CakeEmail $email CakeEmail
 * @return array
 * @throws SocketException When mail cannot be sent.
 */
	public function send(CakeEmail $email) {
		// https://github.com/cakephp/cakephp/issues/2209
		// https://bugs.php.net/bug.php?id=47983
		$eol = "\r\n";
		if (isset($this->_config['eol'])) {
			$eol = $this->_config['eol'];
		}
		$headers = $email->getHeaders(array('from', 'sender', 'replyTo', 'readReceipt', 'returnPath', 'to', 'cc', 'bcc'));
		$to = $headers['To'];
		unset($headers['To']);
		foreach ($headers as $key => $header) {
			$headers[$key] = str_replace("\r\n", '', $header);
		}
		$headers = $this->_headersToString($headers, $eol);
		$subject = str_replace("\r\n", '', $email->subject());
		$to = str_replace("\r\n", '', $to);

		$message = implode($eol, $email->message());

		$params = isset($this->_config['additionalParameters']) ? $this->_config['additionalParameters'] : null;
		$this->_mail($to, $subject, $message, $headers, $params);

		$headers .= $eol . 'Subject: ' . $subject;
		$headers .= $eol . 'To: ' . $to;
		return array('headers' => $headers, 'message' => $message);
	}

/**
 * Wraps internal function mail() and throws exception instead of errors if anything goes wrong
 *
 * @param string $to email's recipient
 * @param string $subject email's subject
 * @param string $message email's body
 * @param string $headers email's custom headers
 * @param string $params additional params for sending email, will be ignored when in safe_mode
 * @throws SocketException if mail could not be sent
 * @return void
 */
	protected function _mail($to, $subject, $message, $headers, $params = null) {
		if (ini_get('safe_mode')) {
			//@codingStandardsIgnoreStart
			if (!@mail($to, $subject, $message, $headers)) {
				$error = error_get_last();
				$msg = 'Could not send email: ' . (isset($error['message']) ? $error['message'] : 'unknown');
				throw new SocketException($msg);
			}
		} elseif (!@mail($to, $subject, $message, $headers, $params)) {
			$error = error_get_last();
			$msg = 'Could not send email: ' . (isset($error['message']) ? $error['message'] : 'unknown');
			//@codingStandardsIgnoreEnd
			throw new SocketException($msg);
		}
	}

}