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sites/all/modules/civicrm/packages/Mail.php
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276
sites/all/modules/civicrm/packages/Mail.php
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<?php
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/**
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* PEAR's Mail:: interface.
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*
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* PHP versions 4 and 5
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*
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* LICENSE:
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*
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* Copyright (c) 2002-2007, Richard Heyes
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* o Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* o Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* o The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @category Mail
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* @package Mail
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* @author Chuck Hagenbuch <chuck@horde.org>
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* @copyright 1997-2010 Chuck Hagenbuch
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* @license http://opensource.org/licenses/bsd-license.php New BSD License
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* @version CVS: $Id: Mail.php 294747 2010-02-08 08:18:33Z clockwerx $
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* @link http://pear.php.net/package/Mail/
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*/
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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: 294747 $
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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 $params The parameters to pass to the Mail:: object.
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* @return object Mail a instance of the driver class or if fails a PEAR Error
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* @access public
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*/
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static function &factory($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 $body The full text of the message body, including any
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* Mime parts, etc.
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*
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* @return mixed Returns true on success, or a PEAR_Error
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* containing a descriptive error message on
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* failure.
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*
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* @access public
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* @deprecated use Mail_mail::send instead
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*/
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function send($recipients, $headers, $body)
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{
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if (!is_array($headers)) {
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return PEAR::raiseError('$headers must be an array');
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}
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$result = $this->_sanitizeHeaders($headers);
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if (is_a($result, 'PEAR_Error')) {
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return $result;
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}
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// if we're passed an array of recipients, implode it.
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if (is_array($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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// fix for CRM-1367
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if (!array_key_exists('Date', $headers)) {
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$headers['Date'] = date('r');
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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 (is_a($addresses, 'PEAR_Error')) {
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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(', ', $recipients);
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}
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// Parse recipients, leaving out all personal info. This is
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// for smtp recipients, etc. All relevant personal information
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// should already be in the headers.
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$mail_object = new Mail_RFC822($recipients, 'localhost', false);
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$addresses = $mail_object->parseAddressList();
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// If parseAddressList() returned a PEAR_Error object, just return it.
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if (is_a($addresses, 'PEAR_Error')) {
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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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