Subversion-Projekte lars-tiefland.php_share

<?php

/**

 *  PEAR's Mail:: interface.

 *

 * PHP versions 4 and 5

 *

 * LICENSE:

 *

 * Copyright (c) 2002-2007, 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:

 *

 * o Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * o 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.

 * o The names of the authors may not 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

 * OWNER 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   1997-2010 Chuck Hagenbuch

 * @license     http://opensource.org/licenses/bsd-license.php New BSD License

 * @version     CVS: $Id: Mail.php 294747 2010-02-08 08:18:33Z clockwerx $

 * @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.

 *

 * @access public

 * @version $Revision: 294747 $

 * @package Mail

 */

class Mail

{

    /**

     * Line terminator used for separating header lines.

     * @var string

     */

    var $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

     * @access public

     */

    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.

     *

     * @access public

     * @deprecated use Mail_mail::send instead

     */

    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.

     *

     * @access private

     */

    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.

     * @access private

     */

    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.

     * @access private

     */

    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.

        $addresses = Mail_RFC822::parseAddressList($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;

    }

}