forked from GNUsocial/gnu-social
239 lines
8.7 KiB
PHP
239 lines
8.7 KiB
PHP
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<?php
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2003 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.02 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/2_02.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Author: Chuck Hagenbuch <chuck@horde.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id: Mail.php,v 1.17 2006/09/15 03:41:18 jon Exp $
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require_once 'PEAR.php';
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/**
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* PEAR's Mail:: interface. Defines the interface for implementing
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* mailers under the PEAR hierarchy, and provides supporting functions
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* useful in multiple mailer backends.
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*
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* @access public
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* @version $Revision: 1.17 $
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* @package Mail
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*/
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class Mail
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{
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/**
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* Line terminator used for separating header lines.
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* @var string
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*/
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var $sep = "\r\n";
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/**
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* Provides an interface for generating Mail:: objects of various
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* types
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*
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* @param string $driver The kind of Mail:: object to instantiate.
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* @param array $params The parameters to pass to the Mail:: object.
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* @return object Mail a instance of the driver class or if fails a PEAR Error
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* @access public
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*/
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function &factory($driver, $params = array())
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{
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$driver = strtolower($driver);
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@include_once 'Mail/' . $driver . '.php';
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$class = 'Mail_' . $driver;
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if (class_exists($class)) {
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$mailer = new $class($params);
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return $mailer;
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} else {
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return PEAR::raiseError('Unable to find class for driver ' . $driver);
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}
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}
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/**
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* Implements Mail::send() function using php's built-in mail()
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* command.
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*
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* @param mixed $recipients Either a comma-seperated list of recipients
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* (RFC822 compliant), or an array of recipients,
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* each RFC822 valid. This may contain recipients not
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* specified in the headers, for Bcc:, resending
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* messages, etc.
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*
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* @param array $headers The array of headers to send with the mail, in an
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* associative array, where the array key is the
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* header name (ie, 'Subject'), and the array value
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* is the header value (ie, 'test'). The header
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* produced from those values would be 'Subject:
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* test'.
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*
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* @param string $body The full text of the message body, including any
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* Mime parts, etc.
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*
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* @return mixed Returns true on success, or a PEAR_Error
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* containing a descriptive error message on
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* failure.
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* @access public
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* @deprecated use Mail_mail::send instead
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*/
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function send($recipients, $headers, $body)
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{
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$this->_sanitizeHeaders($headers);
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// if we're passed an array of recipients, implode it.
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if (is_array($recipients)) {
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$recipients = implode(', ', $recipients);
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}
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// get the Subject out of the headers array so that we can
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// pass it as a seperate argument to mail().
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$subject = '';
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if (isset($headers['Subject'])) {
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$subject = $headers['Subject'];
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unset($headers['Subject']);
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}
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// flatten the headers out.
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list(,$text_headers) = Mail::prepareHeaders($headers);
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return mail($recipients, $subject, $body, $text_headers);
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}
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/**
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* Sanitize an array of mail headers by removing any additional header
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* strings present in a legitimate header's value. The goal of this
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* filter is to prevent mail injection attacks.
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*
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* @param array $headers The associative array of headers to sanitize.
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*
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* @access private
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*/
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function _sanitizeHeaders(&$headers)
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{
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foreach ($headers as $key => $value) {
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$headers[$key] =
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preg_replace('=((<CR>|<LF>|0x0A/%0A|0x0D/%0D|\\n|\\r)\S).*=i',
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null, $value);
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}
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}
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/**
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* Take an array of mail headers and return a string containing
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* text usable in sending a message.
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*
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* @param array $headers The array of headers to prepare, in an associative
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* array, where the array key is the header name (ie,
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* 'Subject'), and the array value is the header
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* value (ie, 'test'). The header produced from those
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* values would be 'Subject: test'.
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*
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* @return mixed Returns false if it encounters a bad address,
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* otherwise returns an array containing two
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* elements: Any From: address found in the headers,
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* and the plain text version of the headers.
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* @access private
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*/
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function prepareHeaders($headers)
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{
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$lines = array();
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$from = null;
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foreach ($headers as $key => $value) {
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if (strcasecmp($key, 'From') === 0) {
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include_once 'Mail/RFC822.php';
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$parser = &new Mail_RFC822();
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$addresses = $parser->parseAddressList($value, 'localhost', false);
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if (PEAR::isError($addresses)) {
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return $addresses;
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}
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$from = $addresses[0]->mailbox . '@' . $addresses[0]->host;
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// Reject envelope From: addresses with spaces.
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if (strstr($from, ' ')) {
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return false;
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}
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$lines[] = $key . ': ' . $value;
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} elseif (strcasecmp($key, 'Received') === 0) {
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$received = array();
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if (is_array($value)) {
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foreach ($value as $line) {
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$received[] = $key . ': ' . $line;
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}
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}
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else {
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$received[] = $key . ': ' . $value;
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}
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// Put Received: headers at the top. Spam detectors often
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// flag messages with Received: headers after the Subject:
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// as spam.
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$lines = array_merge($received, $lines);
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} else {
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// If $value is an array (i.e., a list of addresses), convert
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// it to a comma-delimited string of its elements (addresses).
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if (is_array($value)) {
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$value = implode(', ', $value);
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}
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$lines[] = $key . ': ' . $value;
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}
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}
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return array($from, join($this->sep, $lines));
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}
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/**
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* Take a set of recipients and parse them, returning an array of
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* bare addresses (forward paths) that can be passed to sendmail
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* or an smtp server with the rcpt to: command.
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*
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* @param mixed Either a comma-seperated list of recipients
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* (RFC822 compliant), or an array of recipients,
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* each RFC822 valid.
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*
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* @return mixed An array of forward paths (bare addresses) or a PEAR_Error
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* object if the address list could not be parsed.
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* @access private
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*/
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function parseRecipients($recipients)
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{
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include_once 'Mail/RFC822.php';
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// if we're passed an array, assume addresses are valid and
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// implode them before parsing.
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if (is_array($recipients)) {
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$recipients = implode(', ', $recipients);
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}
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// Parse recipients, leaving out all personal info. This is
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// for smtp recipients, etc. All relevant personal information
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// should already be in the headers.
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$addresses = Mail_RFC822::parseAddressList($recipients, 'localhost', false);
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// If parseAddressList() returned a PEAR_Error object, just return it.
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if (PEAR::isError($addresses)) {
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return $addresses;
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}
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$recipients = array();
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if (is_array($addresses)) {
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foreach ($addresses as $ob) {
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$recipients[] = $ob->mailbox . '@' . $ob->host;
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}
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}
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return $recipients;
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}
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}
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