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PK\1[�{��null.phpnu�[���<?php
/**
 * Null implementation of the PEAR Mail interface
 *
 * PHP version 5
 *
 * LICENSE:
 *
 * Copyright (c) 2010-2017, Phil Kernick
 * 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      Phil Kernick <philk@rotfl.com.au>
 * @copyright   2010-2017 Phil Kernick
 * @license     http://opensource.org/licenses/BSD-3-Clause New BSD License
 * @version     CVS: $Id$
 * @link        http://pear.php.net/package/Mail/
 */

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

    /**
     * Implements Mail_null::send() function. Silently discards all
     * mail.
     *
     * @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)
    {
        return true;
    }

}
PK\1[E@�%>>sendmail.phpnu�[���<?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;
    }

}
PK\1[��A~�{�{
RFC822.phpnu�[���<?php
/**
 * RFC 822 Email address list validation Utility
 *
 * PHP version 5
 *
 * LICENSE:
 *
 * Copyright (c) 2001-2017, Chuck Hagenbuch & 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:
 *
 * 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      Richard Heyes <richard@phpguru.org>
 * @author      Chuck Hagenbuch <chuck@horde.org
 * @copyright   2001-2017 Richard Heyes
 * @license     http://opensource.org/licenses/BSD-3-Clause New BSD License
 * @version     CVS: $Id$
 * @link        http://pear.php.net/package/Mail/
 */

/**
 * RFC 822 Email address list validation Utility
 *
 * What is it?
 *
 * This class will take an address string, and parse it into it's consituent
 * parts, be that either addresses, groups, or combinations. Nested groups
 * are not supported. The structure it returns is pretty straight forward,
 * and is similar to that provided by the imap_rfc822_parse_adrlist(). Use
 * print_r() to view the structure.
 *
 * How do I use it?
 *
 * $address_string = 'My Group: "Richard" <richard@localhost> (A comment), ted@example.com (Ted Bloggs), Barney;';
 * $structure = Mail_RFC822::parseAddressList($address_string, 'example.com', true)
 * print_r($structure);
 *
 * @author  Richard Heyes <richard@phpguru.org>
 * @author  Chuck Hagenbuch <chuck@horde.org>
 * @version $Revision$
 * @license BSD
 * @package Mail
 */
class Mail_RFC822 {

    /**
     * The address being parsed by the RFC822 object.
     * @var string $address
     */
    var $address = '';

    /**
     * The default domain to use for unqualified addresses.
     * @var string $default_domain
     */
    var $default_domain = 'localhost';

    /**
     * Should we return a nested array showing groups, or flatten everything?
     * @var boolean $nestGroups
     */
    var $nestGroups = true;

    /**
     * Whether or not to validate atoms for non-ascii characters.
     * @var boolean $validate
     */
    var $validate = true;

    /**
     * The array of raw addresses built up as we parse.
     * @var array $addresses
     */
    var $addresses = array();

    /**
     * The final array of parsed address information that we build up.
     * @var array $structure
     */
    var $structure = array();

    /**
     * The current error message, if any.
     * @var string $error
     */
    var $error = null;

    /**
     * An internal counter/pointer.
     * @var integer $index
     */
    var $index = null;

    /**
     * The number of groups that have been found in the address list.
     * @var integer $num_groups
     * @access public
     */
    var $num_groups = 0;

    /**
     * A variable so that we can tell whether or not we're inside a
     * Mail_RFC822 object.
     * @var boolean $mailRFC822
     */
    var $mailRFC822 = true;

    /**
    * A limit after which processing stops
    * @var int $limit
    */
    var $limit = null;

    /**
     * Sets up the object. The address must either be set here or when
     * calling parseAddressList(). One or the other.
     *
     * @param string  $address         The address(es) to validate.
     * @param string  $default_domain  Default domain/host etc. If not supplied, will be set to localhost.
     * @param boolean $nest_groups     Whether to return the structure with groups nested for easier viewing.
     * @param boolean $validate        Whether to validate atoms. Turn this off if you need to run addresses through before encoding the personal names, for instance.
     *
     * @return object Mail_RFC822 A new Mail_RFC822 object.
     */
    public function __construct($address = null, $default_domain = null, $nest_groups = null, $validate = null, $limit = null)
    {
        if (isset($address))        $this->address        = $address;
        if (isset($default_domain)) $this->default_domain = $default_domain;
        if (isset($nest_groups))    $this->nestGroups     = $nest_groups;
        if (isset($validate))       $this->validate       = $validate;
        if (isset($limit))          $this->limit          = $limit;
    }

    /**
     * Starts the whole process. The address must either be set here
     * or when creating the object. One or the other.
     *
     * @param string  $address         The address(es) to validate.
     * @param string  $default_domain  Default domain/host etc.
     * @param boolean $nest_groups     Whether to return the structure with groups nested for easier viewing.
     * @param boolean $validate        Whether to validate atoms. Turn this off if you need to run addresses through before encoding the personal names, for instance.
     *
     * @return array A structured array of addresses.
     */
    public function parseAddressList($address = null, $default_domain = null, $nest_groups = null, $validate = null, $limit = null)
    {
        if (!isset($this) || !isset($this->mailRFC822)) {
            $obj = new Mail_RFC822($address, $default_domain, $nest_groups, $validate, $limit);
            return $obj->parseAddressList();
        }

        if (isset($address))        $this->address        = $address;
        if (isset($default_domain)) $this->default_domain = $default_domain;
        if (isset($nest_groups))    $this->nestGroups     = $nest_groups;
        if (isset($validate))       $this->validate       = $validate;
        if (isset($limit))          $this->limit          = $limit;

        $this->structure  = array();
        $this->addresses  = array();
        $this->error      = null;
        $this->index      = null;

        // Unfold any long lines in $this->address.
        $this->address = preg_replace('/\r?\n/', "\r\n", $this->address);
        $this->address = preg_replace('/\r\n(\t| )+/', ' ', $this->address);

        while ($this->address = $this->_splitAddresses($this->address));

        if ($this->address === false || isset($this->error)) {
            require_once 'PEAR.php';
            return PEAR::raiseError($this->error);
        }

        // Validate each address individually.  If we encounter an invalid
        // address, stop iterating and return an error immediately.
        foreach ($this->addresses as $address) {
            $valid = $this->_validateAddress($address);

            if ($valid === false || isset($this->error)) {
                require_once 'PEAR.php';
                return PEAR::raiseError($this->error);
            }

            if (!$this->nestGroups) {
                $this->structure = array_merge($this->structure, $valid);
            } else {
                $this->structure[] = $valid;
            }
        }

        return $this->structure;
    }

    /**
     * Splits an address into separate addresses.
     *
     * @param string $address The addresses to split.
     * @return boolean Success or failure.
     */
    protected function _splitAddresses($address)
    {
        if (!empty($this->limit) && count($this->addresses) == $this->limit) {
            return '';
        }

        if ($this->_isGroup($address) && !isset($this->error)) {
            $split_char = ';';
            $is_group   = true;
        } elseif (!isset($this->error)) {
            $split_char = ',';
            $is_group   = false;
        } elseif (isset($this->error)) {
            return false;
        }

        // Split the string based on the above ten or so lines.
        $parts  = explode($split_char, $address);
        $string = $this->_splitCheck($parts, $split_char);

        // If a group...
        if ($is_group) {
            // If $string does not contain a colon outside of
            // brackets/quotes etc then something's fubar.

            // First check there's a colon at all:
            if (strpos($string, ':') === false) {
                $this->error = 'Invalid address: ' . $string;
                return false;
            }

            // Now check it's outside of brackets/quotes:
            if (!$this->_splitCheck(explode(':', $string), ':')) {
                return false;
            }

            // We must have a group at this point, so increase the counter:
            $this->num_groups++;
        }

        // $string now contains the first full address/group.
        // Add to the addresses array.
        $this->addresses[] = array(
                                   'address' => trim($string),
                                   'group'   => $is_group
                                   );

        // Remove the now stored address from the initial line, the +1
        // is to account for the explode character.
        $address = trim(substr($address, strlen($string) + 1));

        // If the next char is a comma and this was a group, then
        // there are more addresses, otherwise, if there are any more
        // chars, then there is another address.
        if ($is_group && substr($address, 0, 1) == ','){
            $address = trim(substr($address, 1));
            return $address;

        } elseif (strlen($address) > 0) {
            return $address;

        } else {
            return '';
        }

        // If you got here then something's off
        return false;
    }

    /**
     * Checks for a group at the start of the string.
     *
     * @param string $address The address to check.
     * @return boolean Whether or not there is a group at the start of the string.
     */
    protected function _isGroup($address)
    {
        // First comma not in quotes, angles or escaped:
        $parts  = explode(',', $address);
        $string = $this->_splitCheck($parts, ',');

        // Now we have the first address, we can reliably check for a
        // group by searching for a colon that's not escaped or in
        // quotes or angle brackets.
        if (count($parts = explode(':', $string)) > 1) {
            $string2 = $this->_splitCheck($parts, ':');
            return ($string2 !== $string);
        } else {
            return false;
        }
    }

    /**
     * A common function that will check an exploded string.
     *
     * @param array $parts The exloded string.
     * @param string $char  The char that was exploded on.
     * @return mixed False if the string contains unclosed quotes/brackets, or the string on success.
     */
    protected function _splitCheck($parts, $char)
    {
        $string = $parts[0];

        for ($i = 0; $i < count($parts); $i++) {
            if ($this->_hasUnclosedQuotes($string)
                || $this->_hasUnclosedBrackets($string, '<>')
                || $this->_hasUnclosedBrackets($string, '[]')
                || $this->_hasUnclosedBrackets($string, '()')
                || substr($string, -1) == '\\') {
                if (isset($parts[$i + 1])) {
                    $string = $string . $char . $parts[$i + 1];
                } else {
                    $this->error = 'Invalid address spec. Unclosed bracket or quotes';
                    return false;
                }
            } else {
                $this->index = $i;
                break;
            }
        }

        return $string;
    }

    /**
     * Checks if a string has unclosed quotes or not.
     *
     * @param string $string  The string to check.
     * @return boolean  True if there are unclosed quotes inside the string,
     *                  false otherwise.
     */
    protected function _hasUnclosedQuotes($string)
    {
        $string = trim($string);
        $iMax = strlen($string);
        $in_quote = false;
        $i = $slashes = 0;

        for (; $i < $iMax; ++$i) {
            switch ($string[$i]) {
            case '\\':
                ++$slashes;
                break;

            case '"':
                if ($slashes % 2 == 0) {
                    $in_quote = !$in_quote;
                }
                // Fall through to default action below.

            default:
                $slashes = 0;
                break;
            }
        }

        return $in_quote;
    }

    /**
     * Checks if a string has an unclosed brackets or not. IMPORTANT:
     * This function handles both angle brackets and square brackets;
     *
     * @param string $string The string to check.
     * @param string $chars  The characters to check for.
     * @return boolean True if there are unclosed brackets inside the string, false otherwise.
     */
    protected function _hasUnclosedBrackets($string, $chars)
    {
        $num_angle_start = substr_count($string, $chars[0]);
        $num_angle_end   = substr_count($string, $chars[1]);

        $this->_hasUnclosedBracketsSub($string, $num_angle_start, $chars[0]);
        $this->_hasUnclosedBracketsSub($string, $num_angle_end, $chars[1]);

        if ($num_angle_start < $num_angle_end) {
            $this->error = 'Invalid address spec. Unmatched quote or bracket (' . $chars . ')';
            return false;
        } else {
            return ($num_angle_start > $num_angle_end);
        }
    }

    /**
     * Sub function that is used only by hasUnclosedBrackets().
     *
     * @param string $string The string to check.
     * @param integer &$num    The number of occurences.
     * @param string $char   The character to count.
     * @return integer The number of occurences of $char in $string, adjusted for backslashes.
     */
    protected function _hasUnclosedBracketsSub($string, &$num, $char)
    {
        $parts = explode($char, $string);
        for ($i = 0; $i < count($parts); $i++){
            if (substr($parts[$i], -1) == '\\' || $this->_hasUnclosedQuotes($parts[$i]))
                $num--;
            if (isset($parts[$i + 1]))
                $parts[$i + 1] = $parts[$i] . $char . $parts[$i + 1];
        }

        return $num;
    }

    /**
     * Function to begin checking the address.
     *
     * @param string $address The address to validate.
     * @return mixed False on failure, or a structured array of address information on success.
     */
    protected function _validateAddress($address)
    {
        $is_group = false;
        $addresses = array();

        if ($address['group']) {
            $is_group = true;

            // Get the group part of the name
            $parts     = explode(':', $address['address']);
            $groupname = $this->_splitCheck($parts, ':');
            $structure = array();

            // And validate the group part of the name.
            if (!$this->_validatePhrase($groupname)){
                $this->error = 'Group name did not validate.';
                return false;
            } else {
                // Don't include groups if we are not nesting
                // them. This avoids returning invalid addresses.
                if ($this->nestGroups) {
                    $structure = new stdClass;
                    $structure->groupname = $groupname;
                }
            }

            $address['address'] = ltrim(substr($address['address'], strlen($groupname . ':')));
        }

        // If a group then split on comma and put into an array.
        // Otherwise, Just put the whole address in an array.
        if ($is_group) {
            while (strlen($address['address']) > 0) {
                $parts       = explode(',', $address['address']);
                $addresses[] = $this->_splitCheck($parts, ',');
                $address['address'] = trim(substr($address['address'], strlen(end($addresses) . ',')));
            }
        } else {
            $addresses[] = $address['address'];
        }

        // Trim the whitespace from all of the address strings.
        array_map('trim', $addresses);

        // Validate each mailbox.
        // Format could be one of: name <geezer@domain.com>
        //                         geezer@domain.com
        //                         geezer
        // ... or any other format valid by RFC 822.
        for ($i = 0; $i < count($addresses); $i++) {
            if (!$this->validateMailbox($addresses[$i])) {
                if (empty($this->error)) {
                    $this->error = 'Validation failed for: ' . $addresses[$i];
                }
                return false;
            }
        }

        // Nested format
        if ($this->nestGroups) {
            if ($is_group) {
                $structure->addresses = $addresses;
            } else {
                $structure = $addresses[0];
            }

        // Flat format
        } else {
            if ($is_group) {
                $structure = array_merge($structure, $addresses);
            } else {
                $structure = $addresses;
            }
        }

        return $structure;
    }

    /**
     * Function to validate a phrase.
     *
     * @param string $phrase The phrase to check.
     * @return boolean Success or failure.
     */
    protected function _validatePhrase($phrase)
    {
        // Splits on one or more Tab or space.
        $parts = preg_split('/[ \\x09]+/', $phrase, -1, PREG_SPLIT_NO_EMPTY);

        $phrase_parts = array();
        while (count($parts) > 0){
            $phrase_parts[] = $this->_splitCheck($parts, ' ');
            for ($i = 0; $i < $this->index + 1; $i++)
                array_shift($parts);
        }

        foreach ($phrase_parts as $part) {
            // If quoted string:
            if (substr($part, 0, 1) == '"') {
                if (!$this->_validateQuotedString($part)) {
                    return false;
                }
                continue;
            }

            // Otherwise it's an atom:
            if (!$this->_validateAtom($part)) return false;
        }

        return true;
    }

    /**
     * Function to validate an atom which from rfc822 is:
     * atom = 1*<any CHAR except specials, SPACE and CTLs>
     *
     * If validation ($this->validate) has been turned off, then
     * validateAtom() doesn't actually check anything. This is so that you
     * can split a list of addresses up before encoding personal names
     * (umlauts, etc.), for example.
     *
     * @param string $atom The string to check.
     * @return boolean Success or failure.
     */
    protected function _validateAtom($atom)
    {
        if (!$this->validate) {
            // Validation has been turned off; assume the atom is okay.
            return true;
        }

        // Check for any char from ASCII 0 - ASCII 127
        if (!preg_match('/^[\\x00-\\x7E]+$/i', $atom, $matches)) {
            return false;
        }

        // Check for specials:
        if (preg_match('/[][()<>@,;\\:". ]/', $atom)) {
            return false;
        }

        // Check for control characters (ASCII 0-31):
        if (preg_match('/[\\x00-\\x1F]+/', $atom)) {
            return false;
        }

        return true;
    }

    /**
     * Function to validate quoted string, which is:
     * quoted-string = <"> *(qtext/quoted-pair) <">
     *
     * @param string $qstring The string to check
     * @return boolean Success or failure.
     */
    protected function _validateQuotedString($qstring)
    {
        // Leading and trailing "
        $qstring = substr($qstring, 1, -1);

        // Perform check, removing quoted characters first.
        return !preg_match('/[\x0D\\\\"]/', preg_replace('/\\\\./', '', $qstring));
    }

    /**
     * Function to validate a mailbox, which is:
     * mailbox =   addr-spec         ; simple address
     *           / phrase route-addr ; name and route-addr
     *
     * @param string &$mailbox The string to check.
     * @return boolean Success or failure.
     */
    public function validateMailbox(&$mailbox)
    {
        // A couple of defaults.
        $phrase  = '';
        $comment = '';
        $comments = array();

        // Catch any RFC822 comments and store them separately.
        $_mailbox = $mailbox;
        while (strlen(trim($_mailbox)) > 0) {
            $parts = explode('(', $_mailbox);
            $before_comment = $this->_splitCheck($parts, '(');
            if ($before_comment != $_mailbox) {
                // First char should be a (.
                $comment    = substr(str_replace($before_comment, '', $_mailbox), 1);
                $parts      = explode(')', $comment);
                $comment    = $this->_splitCheck($parts, ')');
                $comments[] = $comment;

                // +2 is for the brackets
                $_mailbox = substr($_mailbox, strpos($_mailbox, '('.$comment)+strlen($comment)+2);
            } else {
                break;
            }
        }

        foreach ($comments as $comment) {
            $mailbox = str_replace("($comment)", '', $mailbox);
        }

        $mailbox = trim($mailbox);

        // Check for name + route-addr
        if (substr($mailbox, -1) == '>' && substr($mailbox, 0, 1) != '<') {
            $parts  = explode('<', $mailbox);
            $name   = $this->_splitCheck($parts, '<');

            $phrase     = trim($name);
            $route_addr = trim(substr($mailbox, strlen($name.'<'), -1));

            if ($this->_validatePhrase($phrase) === false || ($route_addr = $this->_validateRouteAddr($route_addr)) === false) {
                return false;
            }

        // Only got addr-spec
        } else {
            // First snip angle brackets if present.
            if (substr($mailbox, 0, 1) == '<' && substr($mailbox, -1) == '>') {
                $addr_spec = substr($mailbox, 1, -1);
            } else {
                $addr_spec = $mailbox;
            }

            if (($addr_spec = $this->_validateAddrSpec($addr_spec)) === false) {
                return false;
            }
        }

        // Construct the object that will be returned.
        $mbox = new stdClass();

        // Add the phrase (even if empty) and comments
        $mbox->personal = $phrase;
        $mbox->comment  = isset($comments) ? $comments : array();

        if (isset($route_addr)) {
            $mbox->mailbox = $route_addr['local_part'];
            $mbox->host    = $route_addr['domain'];
            $route_addr['adl'] !== '' ? $mbox->adl = $route_addr['adl'] : '';
        } else {
            $mbox->mailbox = $addr_spec['local_part'];
            $mbox->host    = $addr_spec['domain'];
        }

        $mailbox = $mbox;
        return true;
    }

    /**
     * This function validates a route-addr which is:
     * route-addr = "<" [route] addr-spec ">"
     *
     * Angle brackets have already been removed at the point of
     * getting to this function.
     *
     * @param string $route_addr The string to check.
     * @return mixed False on failure, or an array containing validated address/route information on success.
     */
    protected function _validateRouteAddr($route_addr)
    {
        // Check for colon.
        if (strpos($route_addr, ':') !== false) {
            $parts = explode(':', $route_addr);
            $route = $this->_splitCheck($parts, ':');
        } else {
            $route = $route_addr;
        }

        // If $route is same as $route_addr then the colon was in
        // quotes or brackets or, of course, non existent.
        if ($route === $route_addr){
            unset($route);
            $addr_spec = $route_addr;
            if (($addr_spec = $this->_validateAddrSpec($addr_spec)) === false) {
                return false;
            }
        } else {
            // Validate route part.
            if (($route = $this->_validateRoute($route)) === false) {
                return false;
            }

            $addr_spec = substr($route_addr, strlen($route . ':'));

            // Validate addr-spec part.
            if (($addr_spec = $this->_validateAddrSpec($addr_spec)) === false) {
                return false;
            }
        }

        if (isset($route)) {
            $return['adl'] = $route;
        } else {
            $return['adl'] = '';
        }

        $return = array_merge($return, $addr_spec);
        return $return;
    }

    /**
     * Function to validate a route, which is:
     * route = 1#("@" domain) ":"
     *
     * @param string $route The string to check.
     * @return mixed False on failure, or the validated $route on success.
     */
    protected function _validateRoute($route)
    {
        // Split on comma.
        $domains = explode(',', trim($route));

        foreach ($domains as $domain) {
            $domain = str_replace('@', '', trim($domain));
            if (!$this->_validateDomain($domain)) return false;
        }

        return $route;
    }

    /**
     * Function to validate a domain, though this is not quite what
     * you expect of a strict internet domain.
     *
     * domain = sub-domain *("." sub-domain)
     *
     * @param string $domain The string to check.
     * @return mixed False on failure, or the validated domain on success.
     */
    protected function _validateDomain($domain)
    {
        // Note the different use of $subdomains and $sub_domains
        $subdomains = explode('.', $domain);

        while (count($subdomains) > 0) {
            $sub_domains[] = $this->_splitCheck($subdomains, '.');
            for ($i = 0; $i < $this->index + 1; $i++)
                array_shift($subdomains);
        }

        foreach ($sub_domains as $sub_domain) {
            if (!$this->_validateSubdomain(trim($sub_domain)))
                return false;
        }

        // Managed to get here, so return input.
        return $domain;
    }

    /**
     * Function to validate a subdomain:
     *   subdomain = domain-ref / domain-literal
     *
     * @param string $subdomain The string to check.
     * @return boolean Success or failure.
     */
    protected function _validateSubdomain($subdomain)
    {
        if (preg_match('|^\[(.*)]$|', $subdomain, $arr)){
            if (!$this->_validateDliteral($arr[1])) return false;
        } else {
            if (!$this->_validateAtom($subdomain)) return false;
        }

        // Got here, so return successful.
        return true;
    }

    /**
     * Function to validate a domain literal:
     *   domain-literal =  "[" *(dtext / quoted-pair) "]"
     *
     * @param string $dliteral The string to check.
     * @return boolean Success or failure.
     */
    protected function _validateDliteral($dliteral)
    {
        return !preg_match('/(.)[][\x0D\\\\]/', $dliteral, $matches) && ((! isset($matches[1])) || $matches[1] != '\\');
    }

    /**
     * Function to validate an addr-spec.
     *
     * addr-spec = local-part "@" domain
     *
     * @param string $addr_spec The string to check.
     * @return mixed False on failure, or the validated addr-spec on success.
     */
    protected function _validateAddrSpec($addr_spec)
    {
        $addr_spec = trim($addr_spec);

        // Split on @ sign if there is one.
        if (strpos($addr_spec, '@') !== false) {
            $parts      = explode('@', $addr_spec);
            $local_part = $this->_splitCheck($parts, '@');
            $domain     = substr($addr_spec, strlen($local_part . '@'));

        // No @ sign so assume the default domain.
        } else {
            $local_part = $addr_spec;
            $domain     = $this->default_domain;
        }

        if (($local_part = $this->_validateLocalPart($local_part)) === false) return false;
        if (($domain     = $this->_validateDomain($domain)) === false) return false;

        // Got here so return successful.
        return array('local_part' => $local_part, 'domain' => $domain);
    }

    /**
     * Function to validate the local part of an address:
     *   local-part = word *("." word)
     *
     * @param string $local_part
     * @return mixed False on failure, or the validated local part on success.
     */
    protected function _validateLocalPart($local_part)
    {
        $parts = explode('.', $local_part);
        $words = array();

        // Split the local_part into words.
        while (count($parts) > 0) {
            $words[] = $this->_splitCheck($parts, '.');
            for ($i = 0; $i < $this->index + 1; $i++) {
                array_shift($parts);
            }
        }

        // Validate each word.
        foreach ($words as $word) {
            // word cannot be empty (#17317)
            if ($word === '') {
                return false;
            }
            // If this word contains an unquoted space, it is invalid. (6.2.4)
            if (strpos($word, ' ') && $word[0] !== '"')
            {
                return false;
            }

            if ($this->_validatePhrase(trim($word)) === false) return false;
        }

        // Managed to get here, so return the input.
        return $local_part;
    }

    /**
     * Returns an approximate count of how many addresses are in the
     * given string. This is APPROXIMATE as it only splits based on a
     * comma which has no preceding backslash. Could be useful as
     * large amounts of addresses will end up producing *large*
     * structures when used with parseAddressList().
     *
     * @param  string $data Addresses to count
     * @return int          Approximate count
     */
    public function approximateCount($data)
    {
        return count(preg_split('/(?<!\\\\),/', $data));
    }

    /**
     * This is a email validating function separate to the rest of the
     * class. It simply validates whether an email is of the common
     * internet form: <user>@<domain>. This can be sufficient for most
     * people. Optional stricter mode can be utilised which restricts
     * mailbox characters allowed to alphanumeric, full stop, hyphen
     * and underscore.
     *
     * @param  string  $data   Address to check
     * @param  boolean $strict Optional stricter mode
     * @return mixed           False if it fails, an indexed array
     *                         username/domain if it matches
     */
    public function isValidInetAddress($data, $strict = false)
    {
        $regex = $strict ? '/^([.0-9a-z_+-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})$/i' : '/^([*+!.&#$|\'\\%\/0-9a-z^_`{}=?~:-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})$/i';
        if (preg_match($regex, trim($data), $matches)) {
            return array($matches[1], $matches[2]);
        } else {
            return false;
        }
    }

}
PK\1[�+V����mime.phpnu�[���<?php

/**
 * The Mail_Mime class is used to create MIME E-mail messages
 *
 * The Mail_Mime class provides an OO interface to create MIME
 * enabled email messages. This way you can create emails that
 * contain plain-text bodies, HTML bodies, attachments, inline
 * images and specific headers.
 *
 * Compatible with PHP version 5, 7 and 8
 *
 * LICENSE: This LICENSE is in the BSD license style.
 * Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
 * Copyright (c) 2003-2006, PEAR <pear-group@php.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - Neither the name of the authors, 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 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_Mime
 * @author    Richard Heyes  <richard@phpguru.org>
 * @author    Tomas V.V. Cox <cox@idecnet.com>
 * @author    Cipriano Groenendal <cipri@php.net>
 * @author    Sean Coates <sean@php.net>
 * @author    Aleksander Machniak <alec@php.net>
 * @copyright 2003-2006 PEAR <pear-group@php.net>
 * @license   http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version   Release: @package_version@
 * @link      http://pear.php.net/package/Mail_mime
 *
 *            This class is based on HTML Mime Mail class from
 *            Richard Heyes <richard@phpguru.org> which was based also
 *            in the mime_mail.class by Tobias Ratschiller <tobias@dnet.it>
 *            and Sascha Schumann <sascha@schumann.cx>
 */


require_once 'PEAR.php';
require_once 'Mail/mimePart.php';


/**
 * The Mail_Mime class provides an OO interface to create MIME
 * enabled email messages. This way you can create emails that
 * contain plain-text bodies, HTML bodies, attachments, inline
 * images and specific headers.
 *
 * @category  Mail
 * @package   Mail_Mime
 * @author    Richard Heyes  <richard@phpguru.org>
 * @author    Tomas V.V. Cox <cox@idecnet.com>
 * @author    Cipriano Groenendal <cipri@php.net>
 * @author    Sean Coates <sean@php.net>
 * @copyright 2003-2006 PEAR <pear-group@php.net>
 * @license   http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version   Release: @package_version@
 * @link      http://pear.php.net/package/Mail_mime
 */
class Mail_mime
{
    /**
     * Contains the plain text part of the email
     *
     * @var string
     */
    protected $txtbody = '';

    /**
     * Contains the html part of the email
     *
     * @var string
     */
    protected $htmlbody = '';

    /**
     * Contains the text/calendar part of the email
     *
     * @var string
     */
    protected $calbody = '';

    /**
     * List of the attached images
     *
     * @var array
     */
    protected $html_images = array();

    /**
     * List of the attachements
     *
     * @var array
     */
    protected $parts = array();

    /**
     * Headers for the mail
     *
     * @var array
     */
    protected $headers = array();

    /**
     * Build parameters
     *
     * @var array
     */
    protected $build_params = array(
        // What encoding to use for the headers
        // Options: quoted-printable or base64
        'head_encoding' => 'quoted-printable',
        // What encoding to use for plain text
        // Options: 7bit, 8bit, base64, or quoted-printable
        'text_encoding' => 'quoted-printable',
        // What encoding to use for html
        // Options: 7bit, 8bit, base64, or quoted-printable
        'html_encoding' => 'quoted-printable',
        // What encoding to use for calendar part
        // Options: 7bit, 8bit, base64, or quoted-printable
        'calendar_encoding' => 'quoted-printable',
        // The character set to use for html
        'html_charset'  => 'ISO-8859-1',
        // The character set to use for text
        'text_charset'  => 'ISO-8859-1',
        // The character set to use for calendar part
        'calendar_charset'  => 'UTF-8',
        // The character set to use for headers
        'head_charset'  => 'ISO-8859-1',
        // End-of-line sequence
        'eol'           => "\r\n",
        // Delay attachment files IO until building the message
        'delay_file_io' => false,
        // Default calendar method
        'calendar_method' => 'request',
        // multipart part preamble (RFC2046 5.1.1)
        'preamble' => '',
    );


    /**
     * Constructor function
     *
     * @param mixed $params Build parameters that change the way the email
     *                      is built. Should be an associative array.
     *                      See $_build_params.
     *
     * @return void
     */
    public function __construct($params = array())
    {
        // Backward-compatible EOL setting
        if (is_string($params)) {
            $this->build_params['eol'] = $params;
        } else if (defined('MAIL_MIME_CRLF') && !isset($params['eol'])) {
            $this->build_params['eol'] = MAIL_MIME_CRLF;
        }

        // Update build parameters
        if (!empty($params) && is_array($params)) {
            $this->build_params = array_merge($this->build_params, $params);
        }
    }

    /**
     * Set build parameter value
     *
     * @param string $name  Parameter name
     * @param string $value Parameter value
     *
     * @return void
     * @since  1.6.0
     */
    public function setParam($name, $value)
    {
        $this->build_params[$name] = $value;
    }

    /**
     * Get build parameter value
     *
     * @param string $name Parameter name
     *
     * @return mixed Parameter value
     * @since  1.6.0
     */
    public function getParam($name)
    {
        return isset($this->build_params[$name]) ? $this->build_params[$name] : null;
    }

    /**
     * Accessor function to set the body text. Body text is used if
     * it's not an html mail being sent or else is used to fill the
     * text/plain part that emails clients who don't support
     * html should show.
     *
     * @param string $data   Either a string or the file name with the contents
     * @param bool   $isfile If true the first param should be treated
     *                       as a file name, else as a string (default)
     * @param bool   $append If true the text or file is appended to
     *                       the existing body, else the old body is
     *                       overwritten
     *
     * @return mixed True on success or PEAR_Error object
     */
    public function setTXTBody($data, $isfile = false, $append = false)
    {
        return $this->setBody('txtbody', $data, $isfile, $append);
    }

    /**
     * Get message text body
     *
     * @return string Text body
     * @since  1.6.0
     */
    public function getTXTBody()
    {
        return $this->txtbody;
    }

    /**
     * Adds a html part to the mail.
     *
     * @param string $data   Either a string or the file name with the contents
     * @param bool   $isfile A flag that determines whether $data is a
     *                       filename, or a string(false, default)
     *
     * @return bool True on success or PEAR_Error object
     */
    public function setHTMLBody($data, $isfile = false)
    {
        return $this->setBody('htmlbody', $data, $isfile);
    }

    /**
     * Get message HTML body
     *
     * @return string HTML body
     * @since  1.6.0
     */
    public function getHTMLBody()
    {
        return $this->htmlbody;
    }

    /**
     * Function to set a body of text/calendar part (not attachment)
     *
     * @param string $data     Either a string or the file name with the contents
     * @param bool   $isfile   If true the first param should be treated
     *                         as a file name, else as a string (default)
     * @param bool   $append   If true the text or file is appended to
     *                         the existing body, else the old body is
     *                         overwritten
     * @param string $method   iCalendar object method
     * @param string $charset  iCalendar character set
     * @param string $encoding Transfer encoding
     *
     * @return mixed True on success or PEAR_Error object
     * @since  1.9.0
     */
    public function setCalendarBody($data, $isfile = false, $append = false,
        $method = 'request', $charset = 'UTF-8', $encoding = 'quoted-printable'
    ) {
        $result = $this->setBody('calbody', $data, $isfile, $append);

        if ($result === true) {
            $this->build_params['calendar_method']  = $method;
            $this->build_params['calendar_charset'] = $charset;
            $this->build_params['calendar_encoding'] = $encoding;
        }
    }

    /**
     * Get body of calendar part
     *
     * @return string Calendar part body
     * @since  1.9.0
     */
    public function getCalendarBody()
    {
        return $this->calbody;
    }

    /**
     * Adds an image to the list of embedded images.
     * Images added this way will be added as related parts of the HTML message.
     *
     * To correctly match the HTML image with the related attachment
     * HTML should refer to it by a filename (specified in $file or $name
     * arguments) or by cid:<content-id> (specified in $content_id arg).
     *
     * @param string $file       The image file name OR image data itself
     * @param string $c_type     The content type
     * @param string $name       The filename of the image. Used to find
     *                           the image in HTML content.
     * @param bool   $isfile     Whether $file is a filename or not.
     *                           Defaults to true
     * @param string $content_id Desired Content-ID of MIME part
     *                           Defaults to generated unique ID
     *
     * @return bool True on success
     */
    public function addHTMLImage($file,
        $c_type = 'application/octet-stream',
        $name = '',
        $isfile = true,
        $content_id = null
    ) {
        $bodyfile = null;

        if ($isfile) {
            // Don't load file into memory
            if ($this->build_params['delay_file_io']) {
                $filedata = null;
                $bodyfile = $file;
            } else {
                if (self::isError($filedata = $this->file2str($file))) {
                    return $filedata;
                }
            }

            $filename = $name ? $name : $file;
        } else {
            $filedata = $file;
            $filename = $name;
        }

        if (!$content_id) {
            $content_id = preg_replace('/[^0-9a-zA-Z]/', '', uniqid(time(), true));
        }

        $this->html_images[] = array(
            'body'      => $filedata,
            'body_file' => $bodyfile,
            'name'      => $filename,
            'c_type'    => $c_type,
            'cid'       => $content_id
        );

        return true;
    }

    /**
     * Adds a file to the list of attachments.
     *
     * @param mixed  $file        The file name or the file contents itself,
     *                            it can be also Mail_mimePart object
     * @param string $c_type      The content type
     * @param string $name        The filename of the attachment
     *                            Only use if $file is the contents
     * @param bool   $isfile      Whether $file is a filename or not. Defaults to true
     * @param string $encoding    The type of encoding to use. Defaults to base64.
     *                            Possible values: 7bit, 8bit, base64 or quoted-printable.
     * @param string $disposition The content-disposition of this file
     *                            Defaults to attachment.
     *                            Possible values: attachment, inline.
     * @param string $charset     The character set of attachment's content.
     * @param string $language    The language of the attachment
     * @param string $location    The RFC 2557.4 location of the attachment
     * @param string $n_encoding  Encoding of the attachment's name in Content-Type
     *                            By default filenames are encoded using RFC2231 method
     *                            Here you can set RFC2047 encoding (quoted-printable
     *                            or base64) instead
     * @param string $f_encoding  Encoding of the attachment's filename
     *                            in Content-Disposition header.
     * @param string $description Content-Description header
     * @param string $h_charset   The character set of the headers e.g. filename
     *                            If not specified, $charset will be used
     * @param array  $add_headers Additional part headers. Array keys can be in form
     *                            of <header_name>:<parameter_name>
     *
     * @return mixed True on success or PEAR_Error object
     */
    public function addAttachment($file,
        $c_type      = 'application/octet-stream',
        $name        = '',
        $isfile      = true,
        $encoding    = 'base64',
        $disposition = 'attachment',
        $charset     = '',
        $language    = '',
        $location    = '',
        $n_encoding  = null,
        $f_encoding  = null,
        $description = '',
        $h_charset   = null,
        $add_headers = array()
    ) {
        if ($file instanceof Mail_mimePart) {
            $this->parts[] = $file;
            return true;
        }

        $bodyfile = null;

        if ($isfile) {
            // Don't load file into memory
            if ($this->build_params['delay_file_io']) {
                $filedata = null;
                $bodyfile = $file;
            } else {
                if (self::isError($filedata = $this->file2str($file))) {
                    return $filedata;
                }
            }
            // Force the name the user supplied, otherwise use $file
            $filename = ($name ? $name : $this->basename($file));
        } else {
            $filedata = $file;
            $filename = $name;
        }

        if (!strlen($filename)) {
            $msg = "The supplied filename for the attachment can't be empty";
            return self::raiseError($msg);
        }

        $this->parts[] = array(
            'body'        => $filedata,
            'body_file'   => $bodyfile,
            'name'        => $filename,
            'c_type'      => $c_type,
            'charset'     => $charset,
            'encoding'    => $encoding,
            'language'    => $language,
            'location'    => $location,
            'disposition' => $disposition,
            'description' => $description,
            'add_headers' => $add_headers,
            'name_encoding'     => $n_encoding,
            'filename_encoding' => $f_encoding,
            'headers_charset'   => $h_charset,
        );

        return true;
    }

    /**
     * Checks if the current message has many parts
     *
     * @return bool True if the message has many parts, False otherwise.
     * @since  1.9.0
     */
    public function isMultipart()
    {
        return count($this->parts) > 0 || count($this->html_images) > 0
            || (strlen($this->htmlbody) > 0 && strlen($this->txtbody) > 0);
    }

    /**
     * Get the contents of the given file name as string
     *
     * @param string $file_name Path of file to process
     *
     * @return string Contents of $file_name
     */
    protected function file2str($file_name)
    {
        // Check state of file and raise an error properly
        if (!file_exists($file_name)) {
            return self::raiseError('File not found: ' . $file_name);
        }
        if (!is_file($file_name)) {
            return self::raiseError('Not a regular file: ' . $file_name);
        }
        if (!is_readable($file_name)) {
            return self::raiseError('File is not readable: ' . $file_name);
        }

        // Temporarily reset magic_quotes_runtime and read file contents
        if (version_compare(PHP_VERSION, '5.4.0', '<')) {
            $magic_quotes = @ini_set('magic_quotes_runtime', 0);
        }

        $cont = file_get_contents($file_name);

        if (isset($magic_quotes)) {
            @ini_set('magic_quotes_runtime', $magic_quotes);
        }

        return $cont;
    }

    /**
     * Adds a text subpart to the mimePart object and
     * returns it during the build process.
     *
     * @param mixed $obj The object to add the part to, or
     *                   anything else if a new object is to be created.
     *
     * @return object The text mimePart object
     */
    protected function addTextPart($obj = null)
    {
        return $this->addBodyPart($obj, $this->txtbody, 'text/plain', 'text');
    }

    /**
     * Adds a html subpart to the mimePart object and
     * returns it during the build process.
     *
     * @param mixed $obj The object to add the part to, or
     *                   anything else if a new object is to be created.
     *
     * @return object The html mimePart object
     */
    protected function addHtmlPart($obj = null)
    {
        return $this->addBodyPart($obj, $this->htmlbody, 'text/html', 'html');
    }

    /**
     * Adds a calendar subpart to the mimePart object and
     * returns it during the build process.
     *
     * @param mixed $obj The object to add the part to, or
     *                   anything else if a new object is to be created.
     *
     * @return object The text mimePart object
     */
    protected function addCalendarPart($obj = null)
    {
        $ctype = 'text/calendar; method='. $this->build_params['calendar_method'];

        return $this->addBodyPart($obj, $this->calbody, $ctype, 'calendar');
    }

    /**
     * Creates a new mimePart object, using multipart/mixed as
     * the initial content-type and returns it during the
     * build process.
     *
     * @param array $params Additional part parameters
     *
     * @return object The multipart/mixed mimePart object
     */
    protected function addMixedPart($params = array())
    {
        $params['content_type'] = 'multipart/mixed';
        $params['eol']          = $this->build_params['eol'];

        // Create empty multipart/mixed Mail_mimePart object to return
        return new Mail_mimePart('', $params);
    }

    /**
     * Adds a multipart/alternative part to a mimePart
     * object (or creates one), and returns it during
     * the build process.
     *
     * @param mixed $obj The object to add the part to, or
     *                   anything else if a new object is to be created.
     *
     * @return object The multipart/mixed mimePart object
     */
    protected function addAlternativePart($obj = null)
    {
        $params['content_type'] = 'multipart/alternative';
        $params['eol']          = $this->build_params['eol'];

        if (is_object($obj)) {
            $ret = $obj->addSubpart('', $params);
        } else {
            $ret = new Mail_mimePart('', $params);
        }

        return $ret;
    }

    /**
     * Adds a multipart/related part to a mimePart
     * object (or creates one), and returns it during
     * the build process.
     *
     * @param mixed $obj The object to add the part to, or
     *                   anything else if a new object is to be created
     *
     * @return object The multipart/mixed mimePart object
     */
    protected function addRelatedPart($obj = null)
    {
        $params['content_type'] = 'multipart/related';
        $params['eol']          = $this->build_params['eol'];

        if (is_object($obj)) {
            $ret = $obj->addSubpart('', $params);
        } else {
            $ret = new Mail_mimePart('', $params);
        }

        return $ret;
    }

    /**
     * Adds an html image subpart to a mimePart object
     * and returns it during the build process.
     *
     * @param object $obj   The mimePart to add the image to
     * @param array  $value The image information
     *
     * @return object The image mimePart object
     */
    protected function addHtmlImagePart($obj, $value)
    {
        $params['content_type'] = $value['c_type'];
        $params['encoding']     = 'base64';
        $params['disposition']  = 'inline';
        $params['filename']     = $value['name'];
        $params['cid']          = $value['cid'];
        $params['body_file']    = $value['body_file'];
        $params['eol']          = $this->build_params['eol'];

        if (!empty($value['name_encoding'])) {
            $params['name_encoding'] = $value['name_encoding'];
        }
        if (!empty($value['filename_encoding'])) {
            $params['filename_encoding'] = $value['filename_encoding'];
        }

        return $obj->addSubpart($value['body'], $params);
    }

    /**
     * Adds an attachment subpart to a mimePart object
     * and returns it during the build process.
     *
     * @param object $obj   The mimePart to add the image to
     * @param mixed  $value The attachment information array or Mail_mimePart object
     *
     * @return object The image mimePart object
     */
    protected function addAttachmentPart($obj, $value)
    {
        if ($value instanceof Mail_mimePart) {
            return $obj->addSubpart($value);
        }

        $params['eol']          = $this->build_params['eol'];
        $params['filename']     = $value['name'];
        $params['encoding']     = $value['encoding'];
        $params['content_type'] = $value['c_type'];
        $params['body_file']    = $value['body_file'];
        $params['disposition']  = isset($value['disposition']) ?
                                  $value['disposition'] : 'attachment';

        // content charset
        if (!empty($value['charset'])) {
            $params['charset'] = $value['charset'];
        }
        // headers charset (filename, description)
        if (!empty($value['headers_charset'])) {
            $params['headers_charset'] = $value['headers_charset'];
        }
        if (!empty($value['language'])) {
            $params['language'] = $value['language'];
        }
        if (!empty($value['location'])) {
            $params['location'] = $value['location'];
        }
        if (!empty($value['name_encoding'])) {
            $params['name_encoding'] = $value['name_encoding'];
        }
        if (!empty($value['filename_encoding'])) {
            $params['filename_encoding'] = $value['filename_encoding'];
        }
        if (!empty($value['description'])) {
            $params['description'] = $value['description'];
        }
        if (is_array($value['add_headers'])) {
            $params['headers'] = $value['add_headers'];
        }

        return $obj->addSubpart($value['body'], $params);
    }

    /**
     * Returns the complete e-mail, ready to send using an alternative
     * mail delivery method. Note that only the mailpart that is made
     * with Mail_Mime is created. This means that,
     * YOU WILL HAVE NO TO: HEADERS UNLESS YOU SET IT YOURSELF
     * using the $headers parameter!
     *
     * @param string $separation The separation between these two parts.
     * @param array  $params     The Build parameters passed to the
     *                           get() function. See get() for more info.
     * @param array  $headers    The extra headers that should be passed
     *                           to the headers() method.
     *                           See that function for more info.
     * @param bool   $overwrite  Overwrite the existing headers with new.
     *
     * @return mixed The complete e-mail or PEAR error object
     */
    public function getMessage($separation = null, $params = null, $headers = null,
        $overwrite = false
    ) {
        if ($separation === null) {
            $separation = $this->build_params['eol'];
        }

        $body = $this->get($params);

        if (self::isError($body)) {
            return $body;
        }

        return $this->txtHeaders($headers, $overwrite) . $separation . $body;
    }

    /**
     * Returns the complete e-mail body, ready to send using an alternative
     * mail delivery method.
     *
     * @param array $params The Build parameters passed to the
     *                      get() method. See get() for more info.
     *
     * @return mixed The e-mail body or PEAR error object
     * @since  1.6.0
     */
    public function getMessageBody($params = null)
    {
        return $this->get($params, null, true);
    }

    /**
     * Writes (appends) the complete e-mail into file.
     *
     * @param string $filename  Output file location
     * @param array  $params    The Build parameters passed to the
     *                          get() method. See get() for more info.
     * @param array  $headers   The extra headers that should be passed
     *                          to the headers() function.
     *                          See that function for more info.
     * @param bool   $overwrite Overwrite the existing headers with new.
     *
     * @return mixed True or PEAR error object
     * @since  1.6.0
     */
    public function saveMessage($filename, $params = null, $headers = null, $overwrite = false)
    {
        // Check state of file and raise an error properly
        if (file_exists($filename) && !is_writable($filename)) {
            return self::raiseError('File is not writable: ' . $filename);
        }

        // Temporarily reset magic_quotes_runtime and read file contents
        if (version_compare(PHP_VERSION, '5.4.0', '<')) {
            $magic_quotes = @ini_set('magic_quotes_runtime', 0);
        }

        if (!($fh = fopen($filename, 'ab'))) {
            return self::raiseError('Unable to open file: ' . $filename);
        }

        // Write message headers into file (skipping Content-* headers)
        $head = $this->txtHeaders($headers, $overwrite, true);
        if (fwrite($fh, $head) === false) {
            return self::raiseError('Error writing to file: ' . $filename);
        }

        fclose($fh);

        if (isset($magic_quotes)) {
            @ini_set('magic_quotes_runtime', $magic_quotes);
        }

        // Write the rest of the message into file
        $res = $this->get($params, $filename);

        return $res ? $res : true;
    }

    /**
     * Writes (appends) the complete e-mail body into file or stream.
     *
     * @param mixed $filename Output filename or file pointer where to save
     *                        the message instead of returning it
     * @param array $params   The Build parameters passed to the
     *                        get() method. See get() for more info.
     *
     * @return mixed True or PEAR error object
     * @since  1.6.0
     */
    public function saveMessageBody($filename, $params = null)
    {
        if (!is_resource($filename)) {
            // Check state of file and raise an error properly
            if (!file_exists($filename) || !is_writable($filename)) {
                return self::raiseError('File is not writable: ' . $filename);
            }

            if (!($fh = fopen($filename, 'ab'))) {
                return self::raiseError('Unable to open file: ' . $filename);
            }
        } else {
            $fh = $filename;
        }

        // Temporarily reset magic_quotes_runtime and read file contents
        if (version_compare(PHP_VERSION, '5.4.0', '<')) {
            $magic_quotes = @ini_set('magic_quotes_runtime', 0);
        }

        // Write the rest of the message into file
        $res = $this->get($params, $fh, true);

        if (!is_resource($filename)) {
            fclose($fh);
        }

        if (isset($magic_quotes)) {
            @ini_set('magic_quotes_runtime', $magic_quotes);
        }

        return $res ? $res : true;
    }

    /**
     * Builds the multipart message from the list ($this->parts) and
     * returns the mime content.
     *
     * @param array   $params    Build parameters that change the way the email
     *                           is built. Should be associative. See $_build_params.
     * @param mixed   $filename  Output filename or file pointer where to save
     *                           the message instead of returning it
     * @param boolean $skip_head True if you want to return/save only the message
     *                           without headers
     *
     * @return mixed The MIME message content string, null or PEAR error object
     */
    public function get($params = null, $filename = null, $skip_head = false)
    {
        if (!empty($params) && is_array($params)) {
            $this->build_params = array_merge($this->build_params, $params);
        }

        if (isset($this->headers['From'])) {
            // Bug #11381: Illegal characters in domain ID
            if (preg_match('#(@[0-9a-zA-Z\-\.]+)#', $this->headers['From'], $matches)) {
                $domainID = $matches[1];
            } else {
                $domainID = '@localhost';
            }

            foreach ($this->html_images as $i => $img) {
                $cid = $this->html_images[$i]['cid'];
                if (!preg_match('#'.preg_quote($domainID).'$#', $cid)) {
                    $this->html_images[$i]['cid'] = $cid . $domainID;
                }
            }
        }

        if (count($this->html_images) && strlen($this->htmlbody) > 0) {
            foreach ($this->html_images as $key => $value) {
                $rval  = preg_quote($value['name'], '#');
                $regex = array(
                    '#(\s)((?i)src|background|href(?-i))\s*=\s*(["\']?)' . $rval . '\3#',
                    '#(?i)url(?-i)\(\s*(["\']?)' . $rval . '\1\s*\)#',
                );

                $rep = array(
                    '\1\2=\3cid:' . $value['cid'] .'\3',
                    'url(\1cid:' . $value['cid'] . '\1)',
                );

                $this->htmlbody = preg_replace($regex, $rep, $this->htmlbody);
                $this->html_images[$key]['name']
                    = $this->basename($this->html_images[$key]['name']);
            }
        }

        $this->checkParams();

        $message = $this->buildBodyPart();

        if (!isset($message)) {
            return null;
        }

        // Use saved boundary
        if (!empty($this->build_params['boundary'])) {
            $boundary = $this->build_params['boundary'];
        } else {
            $boundary = null;
        }

        // Write output to file
        if ($filename) {
            // Append mimePart message headers and body into file
            $headers = $message->encodeToFile($filename, $boundary, $skip_head);
            if (self::isError($headers)) {
                return $headers;
            }
            $this->headers = array_merge($this->headers, $headers);
        } else {
            $output = $message->encode($boundary, $skip_head);
            if (self::isError($output)) {
                return $output;
            }
            $this->headers = array_merge($this->headers, $output['headers']);
        }

        // remember the boundary used, in case we'd handle headers() call later
        if (empty($boundary) && !empty($this->headers['Content-Type'])) {
            if (preg_match('/boundary="([^"]+)/', $this->headers['Content-Type'], $m)) {
                $this->build_params['boundary'] = $m[1];
            }
        }

        return $filename ? null : $output['body'];
    }

    /**
     * Builds the main body MIME part for the email body. It will add a mixed part
     * if attachments are found.  If no attachments are found  it will return an
     * alternative part if several body texts are found (text, html, calendar),
     * or a single part if only one body text is found.
     *
     * @return Mail_mimePart|null The corresponding part for the body or null.
     *
     * @see buildAlternativeParts
     * @see buildHtmlParts
     */
    protected function buildBodyPart()
    {
        $parts_count  = count($this->parts);
        $mixed_params = array('preamble' => $this->build_params['preamble']);
        $message      = null;

        if ($parts_count > 0) {
            $message = $this->addMixedPart($mixed_params);
            $this->buildAlternativeParts($message, null);
            for ($i = 0; $i < $parts_count; $i++) {
                $this->addAttachmentPart($message, $this->parts[$i]);
            }
        } else {
            $message = $this->buildAlternativeParts(null, $mixed_params);
        }

        return $message;
    }

    /**
     * Builds a single text, html, or calendar part only if one of them is found.
     * If two or more parts are found, then an alternative part containing them is built.
     *
     * @param Mail_mimePart|null $parent_part  The parent mime part to add
     *                                         the part or null
     * @param array              $mixed_params The needed params to create the
     *                                         part when no parent_part is
     *                                         received.
     *
     * @return null|object The main part built inside the method. It will be an
     *                     alternative part or text, html, or calendar part.
     *                     Null if no body texts are found.
     */
    protected function buildAlternativeParts($parent_part, $mixed_params = null)
    {
        $html               = strlen($this->htmlbody) > 0;
        $calendar           = strlen($this->calbody) > 0;
        $has_text           = strlen($this->txtbody) > 0;
        $alternatives_count = $html + $calendar + $has_text;

        if ($alternatives_count > 1) {
            $alt_part = $this->addAlternativePart($parent_part ? $parent_part : $mixed_params);
        } else {
            $alt_part = null;
        }

        $dest_part = $alt_part ? $alt_part : $parent_part;
        $part = null;

        if ($has_text) {
            $part = $this->addTextPart($dest_part);
        }

        if ($html) {
            $part = $this->buildHtmlParts($dest_part);
        }

        if ($calendar) {
            $part = $this->addCalendarPart($dest_part);
        }

        return $dest_part ? $dest_part : $part;
    }

    /**
     * Builds html part as a single part or inside a related part with the html
     * images thar were found.
     *
     * @param Mail_mimePart|null $parent_part The object to add the part to,
     *                                        or anything else if a new object
     *                                        is to be created.
     *
     * @return Mail_mimePart|null The created part or null if no htmlbody found.
     */
    protected function buildHtmlParts($parent_part)
    {
        if (!strlen($this->htmlbody)) {
            return null;
        }

        $count_html_images = count($this->html_images);

        if ($count_html_images > 0) {
            $part = $this->addRelatedPart($parent_part);
            $this->addHtmlPart($part);
        } else {
            $part = $this->addHtmlPart($parent_part);
        }

        for ($i = 0; $i < $count_html_images; $i++) {
            $this->addHtmlImagePart($part, $this->html_images[$i]);
        }

        return $part;
    }

    /**
     * Returns an array with the headers needed to prepend to the email
     * (MIME-Version and Content-Type). Format of argument is:
     * $array['header-name'] = 'header-value';
     *
     * @param array $xtra_headers Assoc array with any extra headers (optional)
     *                            (Don't set Content-Type for multipart messages here!)
     * @param bool  $overwrite    Overwrite already existing headers.
     * @param bool  $skip_content Don't return content headers: Content-Type,
     *                            Content-Disposition and Content-Transfer-Encoding
     *
     * @return array Assoc array with the mime headers
     */
    public function headers($xtra_headers = null, $overwrite = false, $skip_content = false)
    {
        // Add mime version header
        $headers['MIME-Version'] = '1.0';

        if (!empty($xtra_headers)) {
            $headers = array_merge($headers, $xtra_headers);
        }

        if ($overwrite) {
            $this->headers = array_merge($this->headers, $headers);
        } else {
            $this->headers = array_merge($headers, $this->headers);
        }

        // Always reset Content-Type/Content-Transfer-Encoding headers
        // In case the message structure changed in meantime
        unset($this->headers['Content-Type']);
        unset($this->headers['Content-Transfer-Encoding']);
        unset($this->headers['Content-Disposition']);

        $this->headers = array_merge($this->headers, $this->contentHeaders());

        $headers = $this->headers;

        if ($skip_content) {
            unset($headers['Content-Type']);
            unset($headers['Content-Transfer-Encoding']);
            unset($headers['Content-Disposition']);
        } else if (!empty($this->build_params['ctype'])) {
            $headers['Content-Type'] = $this->build_params['ctype'];
        }

        return $this->encodeHeaders($headers);
    }

    /**
     * Get the text version of the headers
     * (usefull if you want to use the PHP mail() function)
     *
     * @param array $xtra_headers Assoc array with any extra headers (optional)
     *                            (Don't set Content-Type for multipart messages here!)
     * @param bool  $overwrite    Overwrite the existing headers with new.
     * @param bool  $skip_content Don't return content headers: Content-Type,
     *                            Content-Disposition and Content-Transfer-Encoding
     *
     * @return string Plain text headers
     */
    public function txtHeaders($xtra_headers = null, $overwrite = false, $skip_content = false)
    {
        $headers = $this->headers($xtra_headers, $overwrite, $skip_content);

        // Place Received: headers at the beginning of the message
        // Spam detectors often flag messages with it after the Subject: as spam
        if (isset($headers['Received'])) {
            $received = $headers['Received'];
            unset($headers['Received']);
            $headers = array('Received' => $received) + $headers;
        }

        $ret = '';
        $eol = $this->build_params['eol'];

        foreach ($headers as $key => $val) {
            if (is_array($val)) {
                foreach ($val as $value) {
                    $ret .= "$key: $value" . $eol;
                }
            } else {
                $ret .= "$key: $val" . $eol;
            }
        }

        return $ret;
    }

    /**
     * Sets message Content-Type header.
     * Use it to build messages with various content-types e.g. miltipart/raport
     * not supported by contentHeaders() function.
     *
     * @param string $type   Type name
     * @param array  $params Hash array of header parameters
     *
     * @return void
     * @since  1.7.0
     */
    public function setContentType($type, $params = array())
    {
        $header = $type;

        $eol = !empty($this->build_params['eol']) ? $this->build_params['eol'] : "\r\n";

        // add parameters
        $token_regexp = '#([^\x21\x23-\x27\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E])#';

        if (is_array($params)) {
            foreach ($params as $name => $value) {
                if ($name == 'boundary') {
                    $this->build_params['boundary'] = $value;
                } else if (!preg_match($token_regexp, $value)) {
                    $header .= ";$eol $name=$value";
                } else {
                    $value = addcslashes($value, '\\"');
                    $header .= ";$eol $name=\"$value\"";
                }
            }
        }

        // add required boundary parameter if not defined
        if (stripos($type, 'multipart/') === 0) {
            if (empty($this->build_params['boundary'])) {
                $this->build_params['boundary'] = '=_' . md5(rand() . microtime());
            }

            $header .= ";$eol boundary=\"".$this->build_params['boundary']."\"";
        }

        $this->build_params['ctype'] = $header;
    }

    /**
     * Sets the Subject header
     *
     * @param string $subject String to set the subject to.
     *
     * @return void
     */
    public function setSubject($subject)
    {
        $this->headers['Subject'] = $subject;
    }

    /**
     * Set an email to the From (the sender) header
     *
     * @param string $email The email address to use
     *
     * @return void
     */
    public function setFrom($email)
    {
        $this->headers['From'] = $email;
    }

    /**
     * Add an email to the To header
     * (multiple calls to this method are allowed)
     *
     * @param string $email The email direction to add
     *
     * @return void
     */
    public function addTo($email)
    {
        if (isset($this->headers['To'])) {
            $this->headers['To'] .= ", $email";
        } else {
            $this->headers['To'] = $email;
        }
    }

    /**
     * Add an email to the Cc (carbon copy) header
     * (multiple calls to this method are allowed)
     *
     * @param string $email The email direction to add
     *
     * @return void
     */
    public function addCc($email)
    {
        if (isset($this->headers['Cc'])) {
            $this->headers['Cc'] .= ", $email";
        } else {
            $this->headers['Cc'] = $email;
        }
    }

    /**
     * Add an email to the Bcc (blank carbon copy) header
     * (multiple calls to this method are allowed)
     *
     * @param string $email The email direction to add
     *
     * @return void
     */
    public function addBcc($email)
    {
        if (isset($this->headers['Bcc'])) {
            $this->headers['Bcc'] .= ", $email";
        } else {
            $this->headers['Bcc'] = $email;
        }
    }

    /**
     * Since the PHP send function requires you to specify
     * recipients (To: header) separately from the other
     * headers, the To: header is not properly encoded.
     * To fix this, you can use this public method to encode
     * your recipients before sending to the send function.
     *
     * @param string $recipients A comma-delimited list of recipients
     *
     * @return string Encoded data
     */
    public function encodeRecipients($recipients)
    {
        $input  = array('To' => $recipients);
        $retval = $this->encodeHeaders($input);

        return $retval['To'] ;
    }

    /**
     * Encodes headers as per RFC2047
     *
     * @param array $input  The header data to encode
     * @param array $params Extra build parameters
     *
     * @return array Encoded data
     */
    protected function encodeHeaders($input, $params = array())
    {
        $build_params = $this->build_params;

        if (!empty($params)) {
            $build_params = array_merge($build_params, $params);
        }

        foreach ($input as $hdr_name => $hdr_value) {
            if (is_array($hdr_value)) {
                foreach ($hdr_value as $idx => $value) {
                    $input[$hdr_name][$idx] = $this->encodeHeader(
                        $hdr_name, $value,
                        $build_params['head_charset'], $build_params['head_encoding']
                    );
                }
            } else if ($hdr_value !== null) {
                $input[$hdr_name] = $this->encodeHeader(
                    $hdr_name, $hdr_value,
                    $build_params['head_charset'], $build_params['head_encoding']
                );
            } else {
                unset($input[$hdr_name]);
            }
        }

        return $input;
    }

    /**
     * Encodes a header as per RFC2047
     *
     * @param string $name     The header name
     * @param string $value    The header data to encode
     * @param string $charset  Character set name
     * @param string $encoding Encoding name (base64 or quoted-printable)
     *
     * @return string Encoded header data (without a name)
     * @since  1.5.3
     */
    public function encodeHeader($name, $value, $charset, $encoding)
    {
        return Mail_mimePart::encodeHeader(
            $name, $value, $charset, $encoding, $this->build_params['eol']
        );
    }

    /**
     * Get file's basename (locale independent)
     *
     * @param string $filename Filename
     *
     * @return string Basename
     */
    protected function basename($filename)
    {
        // basename() is not unicode safe and locale dependent
        if (stristr(PHP_OS, 'win') || stristr(PHP_OS, 'netware')) {
            return preg_replace('/^.*[\\\\\\/]/', '', $filename);
        } else {
            return preg_replace('/^.*[\/]/', '', $filename);
        }
    }

    /**
     * Get Content-Type and Content-Transfer-Encoding headers of the message
     *
     * @return array Headers array
     */
    protected function contentHeaders()
    {
        $attachments      = count($this->parts) > 0;
        $html_images      = count($this->html_images) > 0;
        $html             = strlen($this->htmlbody) > 0;
        $calendar         = strlen($this->calbody) > 0;
        $has_text         = strlen($this->txtbody) > 0;
        $has_alternatives = ($html + $calendar + $has_text) > 1;
        $headers          = array();

        // See get()
        switch (true) {
        case $has_text && !$attachments && !$has_alternatives:
            $headers['Content-Type'] = 'text/plain';
            break;

        case $html && !$html_images && !$attachments && !$has_alternatives:
            $headers['Content-Type'] = 'text/html';
            break;

        case $html && $html_images && !$attachments && !$has_alternatives:
            $headers['Content-Type'] = 'multipart/related';
            break;

        case $calendar && !$attachments && !$has_alternatives:
            $headers['Content-Type'] = 'text/calendar';
            break;

        case $has_alternatives && !$attachments:
            $headers['Content-Type'] = 'multipart/alternative';
            break;

        case $attachments:
            $headers['Content-Type'] = 'multipart/mixed';
            break;
        }

        // Note: This is outside of the above switch construct to workaround
        // opcache bug: https://bugzilla.opensuse.org/show_bug.cgi?id=1166235
        if (empty($headers)) {
            return $headers;
        }

        $this->checkParams();

        $eol = !empty($this->build_params['eol'])
            ? $this->build_params['eol'] : "\r\n";

        if ($headers['Content-Type'] == 'text/plain') {
            // single-part message: add charset and encoding
            if ($this->build_params['text_charset']) {
                $charset = 'charset=' . $this->build_params['text_charset'];
                // place charset parameter in the same line, if possible
                // 26 = strlen("Content-Type: text/plain; ")
                $headers['Content-Type']
                    .= (strlen($charset) + 26 <= 76) ? "; $charset" : ";$eol $charset";
            }

            $headers['Content-Transfer-Encoding']
                = $this->build_params['text_encoding'];
        } else if ($headers['Content-Type'] == 'text/html') {
            // single-part message: add charset and encoding
            if ($this->build_params['html_charset']) {
                $charset = 'charset=' . $this->build_params['html_charset'];
                // place charset parameter in the same line, if possible
                $headers['Content-Type']
                    .= (strlen($charset) + 25 <= 76) ? "; $charset" : ";$eol $charset";
            }
            $headers['Content-Transfer-Encoding']
                = $this->build_params['html_encoding'];
        } else if ($headers['Content-Type'] == 'text/calendar') {
            // single-part message: add charset and encoding
            if ($this->build_params['calendar_charset']) {
                $charset = 'charset=' . $this->build_params['calendar_charset'];
                $headers['Content-Type'] .= "; $charset";
            }

            if ($this->build_params['calendar_method']) {
                $method = 'method=' . $this->build_params['calendar_method'];
                $headers['Content-Type'] .= "; $method";
            }

            $headers['Content-Transfer-Encoding']
                = $this->build_params['calendar_encoding'];
        } else {
            // multipart message: and boundary
            if (!empty($this->build_params['boundary'])) {
                $boundary = $this->build_params['boundary'];
            } else if (!empty($this->headers['Content-Type'])
                && preg_match('/boundary="([^"]+)"/', $this->headers['Content-Type'], $m)
            ) {
                $boundary = $m[1];
            } else {
                $boundary = '=_' . md5(rand() . microtime());
            }

            $this->build_params['boundary'] = $boundary;
            $headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";
        }

        return $headers;
    }

    /**
     * Validate and set build parameters
     *
     * @return void
     */
    protected function checkParams()
    {
        $encodings = array('7bit', '8bit', 'base64', 'quoted-printable');

        $this->build_params['text_encoding']
            = strtolower($this->build_params['text_encoding']);
        $this->build_params['html_encoding']
            = strtolower($this->build_params['html_encoding']);
        $this->build_params['calendar_encoding']
            = strtolower($this->build_params['calendar_encoding']);

        if (!in_array($this->build_params['text_encoding'], $encodings)) {
            $this->build_params['text_encoding'] = '7bit';
        }
        if (!in_array($this->build_params['html_encoding'], $encodings)) {
            $this->build_params['html_encoding'] = '7bit';
        }
        if (!in_array($this->build_params['calendar_encoding'], $encodings)) {
            $this->build_params['calendar_encoding'] = '7bit';
        }

        // text body
        if ($this->build_params['text_encoding'] == '7bit'
            && !preg_match('/ascii/i', $this->build_params['text_charset'])
            && preg_match('/[^\x00-\x7F]/', $this->txtbody)
        ) {
            $this->build_params['text_encoding'] = 'quoted-printable';
        }
        // html body
        if ($this->build_params['html_encoding'] == '7bit'
            && !preg_match('/ascii/i', $this->build_params['html_charset'])
            && preg_match('/[^\x00-\x7F]/', $this->htmlbody)
        ) {
            $this->build_params['html_encoding'] = 'quoted-printable';
        }
        // calendar body
        if ($this->build_params['calendar_encoding'] == '7bit'
            && !preg_match('/ascii/i', $this->build_params['calendar_charset'])
            && preg_match('/[^\x00-\x7F]/', $this->calbody)
        ) {
            $this->build_params['calendar_encoding'] = 'quoted-printable';
        }
    }

    /**
     * Set body of specified message part
     *
     * @param string $type   One of: txtbody, calbody, htmlbody
     * @param string $data   Either a string or the file name with the contents
     * @param bool   $isfile If true the first param should be treated
     *                       as a file name, else as a string (default)
     * @param bool   $append If true the text or file is appended to
     *                       the existing body, else the old body is
     *                       overwritten
     *
     * @return mixed True on success or PEAR_Error object
     */
    protected function setBody($type, $data, $isfile = false, $append = false)
    {
        if ($isfile) {
            $data = $this->file2str($data);
            if (self::isError($data)) {
                return $data;
            }
        }

        if (!$append) {
            $this->{$type} = $data;
        } else {
            $this->{$type} .= $data;
        }

        return true;
    }

    /**
     * Adds a subpart to the mimePart object and
     * returns it during the build process.
     *
     * @param mixed  $obj   The object to add the part to, or
     *                      anything else if a new object is to be created.
     * @param string $body  Part body
     * @param string $ctype Part content type
     * @param string $type  Internal part type
     *
     * @return object The mimePart object
     */
    protected function addBodyPart($obj, $body, $ctype, $type)
    {
        $params['content_type'] = $ctype;
        $params['encoding']     = $this->build_params[$type . '_encoding'];
        $params['charset']      = $this->build_params[$type . '_charset'];
        $params['eol']          = $this->build_params['eol'];

        if (is_object($obj)) {
            $ret = $obj->addSubpart($body, $params);
        } else {
            $ret = new Mail_mimePart($body, $params);
        }

        return $ret;
    }

    /**
     * PEAR::isError implementation
     *
     * @param mixed $data Object
     *
     * @return bool True if object is an instance of PEAR_Error
     */
    public static function isError($data)
    {
        // PEAR::isError() is not PHP 5.4 compatible (see Bug #19473)
        if (is_a($data, 'PEAR_Error')) {
            return true;
        }

        return false;
    }

    /**
     * PEAR::raiseError implementation
     *
     * @param string $message A text error message
     *
     * @return PEAR_Error Instance of PEAR_Error
     */
    public static function raiseError($message)
    {
        // PEAR::raiseError() is not PHP 5.4 compatible
        return new PEAR_Error($message);
    }
}
PK\1[x�ع���mimeDecode.phpnu�[���<?php
/**
 * The Mail_mimeDecode class is used to decode mail/mime messages
 *
 * This class will parse a raw mime email and return
 * the structure. Returned structure is similar to
 * that returned by imap_fetchstructure().
 *
 *  +----------------------------- IMPORTANT ------------------------------+
 *  | Usage of this class compared to native php extensions such as        |
 *  | mailparse or imap, is slow and may be feature deficient. If available|
 *  | you are STRONGLY recommended to use the php extensions.              |
 *  +----------------------------------------------------------------------+
 *
 * Compatible with PHP versions 4 and 5
 *
 * LICENSE: This LICENSE is in the BSD license style.
 * Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
 * Copyright (c) 2003-2006, PEAR <pear-group@php.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - Neither the name of the authors, 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 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_Mime
 * @author     Richard Heyes  <richard@phpguru.org>
 * @author     George Schlossnagle <george@omniti.com>
 * @author     Cipriano Groenendal <cipri@php.net>
 * @author     Sean Coates <sean@php.net>
 * @copyright  2003-2006 PEAR <pear-group@php.net>
 * @license    http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version    CVS: $Id: mimeDecode.php 337165 2015-07-15 09:42:08Z alan_k $
 * @link       http://pear.php.net/package/Mail_mime
 */


/**
 * require PEAR
 *
 * This package depends on PEAR to raise errors.
 */
require_once 'PEAR.php';


/**
 * The Mail_mimeDecode class is used to decode mail/mime messages
 *
 * This class will parse a raw mime email and return the structure.
 * Returned structure is similar to that returned by imap_fetchstructure().
 *
 *  +----------------------------- IMPORTANT ------------------------------+
 *  | Usage of this class compared to native php extensions such as        |
 *  | mailparse or imap, is slow and may be feature deficient. If available|
 *  | you are STRONGLY recommended to use the php extensions.              |
 *  +----------------------------------------------------------------------+
 *
 * @category   Mail
 * @package    Mail_Mime
 * @author     Richard Heyes  <richard@phpguru.org>
 * @author     George Schlossnagle <george@omniti.com>
 * @author     Cipriano Groenendal <cipri@php.net>
 * @author     Sean Coates <sean@php.net>
 * @copyright  2003-2006 PEAR <pear-group@php.net>
 * @license    http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version    Release: @package_version@
 * @link       http://pear.php.net/package/Mail_mime
 */
class Mail_mimeDecode extends PEAR
{
    /**
     * The raw email to decode
     *
     * @var    string
     * @access private
     */
    var $_input;

    /**
     * The header part of the input
     *
     * @var    string
     * @access private
     */
    var $_header;

    /**
     * The body part of the input
     *
     * @var    string
     * @access private
     */
    var $_body;

    /**
     * If an error occurs, this is used to store the message
     *
     * @var    string
     * @access private
     */
    var $_error;

    /**
     * Flag to determine whether to include bodies in the
     * returned object.
     *
     * @var    boolean
     * @access private
     */
    var $_include_bodies;

    /**
     * Flag to determine whether to decode bodies
     *
     * @var    boolean
     * @access private
     */
    var $_decode_bodies;

    /**
     * Flag to determine whether to decode headers
     * (set to UTF8 to iconv convert headers)
     * @var    mixed 
     * @access private
     */
    var $_decode_headers;
  

    /**
     * Flag to determine whether to include attached messages
     * as body in the returned object. Depends on $_include_bodies
     *
     * @var    boolean
     * @access private
     */
    var $_rfc822_bodies;

    /**
     * Constructor.
     *
     * Sets up the object, initialise the variables, and splits and
     * stores the header and body of the input.
     *
     * @param string The input to decode
     * @access public
     */
    function __construct($input)
    {
        list($header, $body)   = $this->_splitBodyHeader($input);

        $this->_input          = $input;
        $this->_header         = $header;
        $this->_body           = $body;
        $this->_decode_bodies  = false;
        $this->_include_bodies = true;
        $this->_rfc822_bodies  = false;
    }
    // BC
    function Mail_mimeDecode($input)
    {
        $this->__construct($input);
    }
    

    /**
     * Begins the decoding process. If called statically
     * it will create an object and call the decode() method
     * of it.
     *
     * @param array An array of various parameters that determine
     *              various things:
     *              include_bodies - Whether to include the body in the returned
     *                               object.
     *              decode_bodies  - Whether to decode the bodies
     *                               of the parts. (Transfer encoding)
     *              decode_headers - Whether to decode headers,
     *                             - use "UTF8//IGNORE" to convert charset.
     *              
     *              input          - If called statically, this will be treated
     *                               as the input
     * @return object Decoded results
     * @access public
     */
    function decode($params = null)
    {
        // determine if this method has been called statically
        $isStatic = empty($this) || !is_a($this, __CLASS__);

        // Have we been called statically?
	// If so, create an object and pass details to that.
        if ($isStatic AND isset($params['input'])) {

            $obj = new Mail_mimeDecode($params['input']);
            $structure = $obj->decode($params);

        // Called statically but no input
        } elseif ($isStatic) {
            return PEAR::raiseError('Called statically and no input given');

        // Called via an object
        } else {
            $this->_include_bodies = isset($params['include_bodies']) ?
	                             $params['include_bodies'] : false;
            $this->_decode_bodies  = isset($params['decode_bodies']) ?
	                             $params['decode_bodies']  : false;
            $this->_decode_headers = isset($params['decode_headers']) ?
	                             $params['decode_headers'] : false;
            $this->_rfc822_bodies  = isset($params['rfc_822bodies']) ?
	                             $params['rfc_822bodies']  : false;
                                 
            if (is_string($this->_decode_headers) && !function_exists('iconv')) {
                 PEAR::raiseError('header decode conversion requested, however iconv is missing');
            }
                                 
            $structure = $this->_decode($this->_header, $this->_body);
            if ($structure === false) {
                $structure = $this->raiseError($this->_error);
            }
        }
    
        return $structure;
    }

    /**
     * Performs the decoding. Decodes the body string passed to it
     * If it finds certain content-types it will call itself in a
     * recursive fashion
     *
     * @param string Header section
     * @param string Body section
     * @return object Results of decoding process
     * @access private
     */
    function _decode($headers, $body, $default_ctype = 'text/plain')
    {
        $return = new stdClass;
        $return->headers = array();
        $headers = $this->_parseHeaders($headers);

        foreach ($headers as $value) {
            $value['value'] =  $this->_decodeHeader($value['value']);
            if (isset($return->headers[strtolower($value['name'])]) AND !is_array($return->headers[strtolower($value['name'])])) {
                $return->headers[strtolower($value['name'])]   = array($return->headers[strtolower($value['name'])]);
                $return->headers[strtolower($value['name'])][] = $value['value'];

            } elseif (isset($return->headers[strtolower($value['name'])])) {
                $return->headers[strtolower($value['name'])][] = $value['value'];

            } else {
                $return->headers[strtolower($value['name'])] = $value['value'];
            }
        }


        foreach ($headers as $key => $value) {
            $headers[$key]['name'] = strtolower($headers[$key]['name']);
            switch ($headers[$key]['name']) {

                case 'content-type':
                    $content_type = $this->_parseHeaderValue($headers[$key]['value']);

                    if (preg_match('/([0-9a-z+.-]+)\/([0-9a-z+.-]+)/i', $content_type['value'], $regs)) {
                        $return->ctype_primary   = $regs[1];
                        $return->ctype_secondary = $regs[2];
                    }

                    if (isset($content_type['other'])) {
                        foreach($content_type['other'] as $p_name => $p_value) {
                            $return->ctype_parameters[$p_name] = $p_value;
                        }
                    }
                    break;

                case 'content-disposition':
                    $content_disposition = $this->_parseHeaderValue($headers[$key]['value']);
                    $return->disposition   = $content_disposition['value'];
                    if (isset($content_disposition['other'])) {
                        foreach($content_disposition['other'] as $p_name => $p_value) {
                            $return->d_parameters[$p_name] = $p_value;
                        }
                    }
                    break;

                case 'content-transfer-encoding':
                    $content_transfer_encoding = $this->_parseHeaderValue($headers[$key]['value']);
                    break;
            }
        }

        if (isset($content_type)) {
            switch (strtolower($content_type['value'])) {
                case 'text/plain':
                    $encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
                    $this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body) : null;
                    break;

                case 'text/html':
                    $encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
                    $this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body) : null;
                    break;
                
                case 'multipart/signed': // PGP
                    $parts = $this->_boundarySplit($body, $content_type['other']['boundary'], true);
                    $return->parts['msg_body'] = $parts[0]; 
                    list($part_header, $part_body) = $this->_splitBodyHeader($parts[1]);
                    $return->parts['sig_hdr'] = $part_header;
                    $return->parts['sig_body'] = $part_body;
                    break;

                case 'multipart/parallel':
                case 'multipart/appledouble': // Appledouble mail
                case 'multipart/report': // RFC1892
                case 'multipart/signed': // PGP
                case 'multipart/digest':
                case 'multipart/alternative':
                case 'multipart/related':
                case 'multipart/relative': //#20431 - android
                case 'multipart/mixed':
                case 'application/vnd.wap.multipart.related':
                    if(!isset($content_type['other']['boundary'])){
                        $this->_error = 'No boundary found for ' . $content_type['value'] . ' part';
                        return false;
                    }

                    $default_ctype = (strtolower($content_type['value']) === 'multipart/digest') ? 'message/rfc822' : 'text/plain';

                    $parts = $this->_boundarySplit($body, $content_type['other']['boundary']);
                    for ($i = 0; $i < count($parts); $i++) {
                        list($part_header, $part_body) = $this->_splitBodyHeader($parts[$i]);
                        $part = $this->_decode($part_header, $part_body, $default_ctype);
                        if($part === false)
                            $part = $this->raiseError($this->_error);
                        $return->parts[] = $part;
                    }
                    break;

                case 'message/rfc822':
                case 'message/delivery-status': // #bug #18693
					if ($this->_rfc822_bodies) {
						$encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
						$return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body);
					}
                    $obj = new Mail_mimeDecode($body);
                    $return->parts[] = $obj->decode(array('include_bodies' => $this->_include_bodies,
					                                      'decode_bodies'  => $this->_decode_bodies,
														  'decode_headers' => $this->_decode_headers));
                    unset($obj);
                    break;

                default:
                    if(!isset($content_transfer_encoding['value']))
                        $content_transfer_encoding['value'] = '7bit';
                    $this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $content_transfer_encoding['value']) : $body) : null;
                    break;
            }

        } else {
            $ctype = explode('/', $default_ctype);
            $return->ctype_primary   = $ctype[0];
            $return->ctype_secondary = $ctype[1];
            $this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body) : $body) : null;
        }

        return $return;
    }

    /**
     * Given the output of the above function, this will return an
     * array of references to the parts, indexed by mime number.
     *
     * @param  object $structure   The structure to go through
     * @param  string $mime_number Internal use only.
     * @return array               Mime numbers
     */
    function &getMimeNumbers(&$structure, $no_refs = false, $mime_number = '', $prepend = '')
    {
        $return = array();
        if (!empty($structure->parts)) {
            if ($mime_number != '') {
                $structure->mime_id = $prepend . $mime_number;
                $return[$prepend . $mime_number] = &$structure;
            }
            for ($i = 0; $i < count($structure->parts); $i++) {

            
                if (!empty($structure->headers['content-type']) AND substr(strtolower($structure->headers['content-type']), 0, 8) == 'message/') {
                    $prepend      = $prepend . $mime_number . '.';
                    $_mime_number = '';
                } else {
                    $_mime_number = ($mime_number == '' ? $i + 1 : sprintf('%s.%s', $mime_number, $i + 1));
                }

                $arr = &Mail_mimeDecode::getMimeNumbers($structure->parts[$i], $no_refs, $_mime_number, $prepend);
                foreach ($arr as $key => $val) {
                    $no_refs ? $return[$key] = '' : $return[$key] = &$arr[$key];
                }
            }
        } else {
            if ($mime_number == '') {
                $mime_number = '1';
            }
            $structure->mime_id = $prepend . $mime_number;
            $no_refs ? $return[$prepend . $mime_number] = '' : $return[$prepend . $mime_number] = &$structure;
        }
        
        return $return;
    }

    /**
     * Given a string containing a header and body
     * section, this function will split them (at the first
     * blank line) and return them.
     *
     * @param string Input to split apart
     * @return array Contains header and body section
     * @access private
     */
    function _splitBodyHeader($input)
    {
        if (preg_match("/^(.*?)\r?\n\r?\n(.*)/s", $input, $match)) {
            return array($match[1], $match[2]);
        }
        // bug #17325 - empty bodies are allowed. - we just check that at least one line 
        // of headers exist..
        if (count(explode("\n",$input))) {
            return array($input, '');
        }
        $this->_error = 'Could not split header and body';
        return false;
    }

    /**
     * Parse headers given in $input and return
     * as assoc array.
     *
     * @param string Headers to parse
     * @return array Contains parsed headers
     * @access private
     */
    function _parseHeaders($input)
    {

        if ($input !== '') {
            // Unfold the input
            $input   = preg_replace("/\r?\n/", "\r\n", $input);
            //#7065 - wrapping.. with encoded stuff.. - probably not needed,
            // wrapping space should only get removed if the trailing item on previous line is a 
            // encoded character
            $input   = preg_replace("/=\r\n(\t| )+/", '=', $input);
            $input   = preg_replace("/\r\n(\t| )+/", ' ', $input);
            
            $headers = explode("\r\n", trim($input));
            $got_start = false;
            foreach ($headers as $value) {
                if (!$got_start) {
                    // munge headers for mbox style from
                    if ($value[0] == '>') {
                        $value = substring($value, 1); // remove mbox >
                    }
                    if (substr($value,0,5) == 'From ') {
                        $value = 'Return-Path: ' . substr($value, 5);
                    } else {
                        $got_start = true;
                    }
                }
                
                $hdr_name = substr($value, 0, $pos = strpos($value, ':'));
                $hdr_value = substr($value, $pos+1);
                if($hdr_value[0] == ' ') {
                    $hdr_value = substr($hdr_value, 1);
                }

                $return[] = array(
                                  'name'  => $hdr_name,
                                  'value' =>  $hdr_value
                                 );
            }
        } else {
            $return = array();
        }

        return $return;
    }

    /**
     * Function to parse a header value,
     * extract first part, and any secondary
     * parts (after ;) This function is not as
     * robust as it could be. Eg. header comments
     * in the wrong place will probably break it.
     *
     * Extra things this can handle
     *   filename*0=......
     *   filename*1=......
     *
     *  This is where lines are broken in, and need merging.
     *
     *   filename*0*=ENC'lang'urlencoded data.
     *   filename*1*=ENC'lang'urlencoded data.
     *
     * 
     *
     * @param string Header value to parse
     * @return array Contains parsed result
     * @access private
     */
    function _parseHeaderValue($input)
    {
         if (($pos = strpos($input, ';')) === false) {
            $input = $this->_decodeHeader($input);
            $return['value'] = trim($input);
            return $return;
        }



        $value = substr($input, 0, $pos);
        $value = $this->_decodeHeader($value);
        $return['value'] = trim($value);
        $input = trim(substr($input, $pos+1));

        if (!strlen($input) > 0) {
            return $return;
        }
        // at this point input contains xxxx=".....";zzzz="...."
        // since we are dealing with quoted strings, we need to handle this properly..
        $i = 0;
        $l = strlen($input);
        $key = '';
        $val = false; // our string - including quotes..
        $q = false; // in quote..
        $lq = ''; // last quote..

        while ($i < $l) {
            
            $c = $input[$i];
            //var_dump(array('i'=>$i,'c'=>$c,'q'=>$q, 'lq'=>$lq, 'key'=>$key, 'val' =>$val));

            $escaped = false;
            if ($c == '\\') {
                $i++;
                if ($i == $l-1) { // end of string.
                    break;
                }
                $escaped = true;
                $c = $input[$i];
            }            


            // state - in key..
            if ($val === false) {
                if (!$escaped && $c == '=') {
                    $val = '';
                    $key = trim($key);
                    $i++;
                    continue;
                }
                if (!$escaped && $c == ';') {
                    if ($key) { // a key without a value..
                        $key= trim($key);
                        $return['other'][$key] = '';
                    }
                    $key = '';
                }
                $key .= $c;
                $i++;
                continue;
            }
                     
            // state - in value.. (as $val is set..)

            if ($q === false) {
                // not in quote yet.
                if ((!strlen($val) || $lq !== false) && $c == ' ' ||  $c == "\t") {
                    $i++;
                    continue; // skip leading spaces after '=' or after '"'
                }
                
                // do not de-quote 'xxx*= itesm.. 
                $key_is_trans = $key[strlen($key)-1] == '*';
                
                if (!$key_is_trans && !$escaped && ($c == '"' || $c == "'")) {
                    // start quoted area..
                    $q = $c;
                    // in theory should not happen raw text in value part..
                    // but we will handle it as a merged part of the string..
                    $val = !strlen(trim($val)) ? '' : trim($val);
                    $i++;
                    continue;
                }
                // got end....
                if (!$escaped && $c == ';') {
                     
                    $return['other'][$key] = trim($val);
                    $val = false;
                    $key = '';
                    $lq = false;
                    $i++;
                    continue;
                }

                $val .= $c;
                $i++;
                continue;
            }
            
            // state - in quote..
            if (!$escaped && $c == $q) {  // potential exit state..
                
                // end of quoted string..
                $lq = $q;
                $q = false;
                $i++;
                continue;
            }
                
            // normal char inside of quoted string..
            $val.= $c;
            $i++;
        }
        
        // do we have anything left..
        if (strlen(trim($key)) || $val !== false) {
           
            $val = trim($val);
          
            $return['other'][$key] = $val;
        }
       
        
        $clean_others = array();
        // merge added values. eg. *1[*]
        foreach($return['other'] as $key =>$val) {
            if (preg_match('/\*[0-9]+\**$/', $key)) {
                $key = preg_replace('/(.*)\*[0-9]+(\**)$/', '\1\2', $key);
                if (isset($clean_others[$key])) {
                    $clean_others[$key] .= $val;
                    continue;
                }
                
            }
            $clean_others[$key] = $val;
            
        }
         
        // handle language translation of '*' ending others.
        foreach( $clean_others as $key =>$val) {
            if ( $key[strlen($key)-1] != '*') {
                $clean_others[strtolower($key)] = $val;
                continue;
            }
            unset($clean_others[$key]);
            $key = substr($key,0,-1);
            //extended-initial-value := [charset] "'" [language] "'"
            //              extended-other-values
            $match = array();
            $info = preg_match("/^([^']+)'([^']*)'(.*)$/", $val, $match);
             
            $clean_others[$key] = urldecode($match[3]);
            $clean_others[strtolower($key)] = $clean_others[$key];
            $clean_others[strtolower($key).'-charset'] = $match[1];
            $clean_others[strtolower($key).'-language'] = $match[2];
            
            
        }
        
        
        $return['other'] = $clean_others;
        
        // decode values.
        foreach($return['other'] as $key =>$val) {
            $charset = isset($return['other'][$key . '-charset']) ?
                $return['other'][$key . '-charset']  : false;
            
            $return['other'][$key] = $this->_decodeHeader($val, $charset);
        }
        
        return $return;
    }

    /**
     * This function splits the input based
     * on the given boundary
     *
     * @param string Input to parse
     * @return array Contains array of resulting mime parts
     * @access private
     */
    function _boundarySplit($input, $boundary, $eatline = false)
    {
        $parts = array();

        $bs_possible = substr($boundary, 2, -2);
        $bs_check = '\"' . $bs_possible . '\"';

        if ($boundary == $bs_check) {
            $boundary = $bs_possible;
        }
        // eatline is used by multipart/signed.
        $tmp = $eatline ?
            preg_split("/\r?\n--".preg_quote($boundary, '/')."(|--)\n/", $input) :
            preg_split("/--".preg_quote($boundary, '/')."((?=\s)|--)/", $input);

        $len = count($tmp) -1;
        for ($i = 1; $i < $len; $i++) {
            if (strlen(trim($tmp[$i]))) {
                $parts[] = $tmp[$i];
            }
        }
        
        // add the last part on if it does not end with the 'closing indicator'
        if (!empty($tmp[$len]) && strlen(trim($tmp[$len])) && $tmp[$len][0] != '-') {
            $parts[] = $tmp[$len];
        }
        return $parts;
    }

    /**
     * Given a header, this function will decode it
     * according to RFC2047. Probably not *exactly*
     * conformant, but it does pass all the given
     * examples (in RFC2047).
     *
     * @param string Input header value to decode
     * @return string Decoded header value
     * @access private
     */
    function _decodeHeader($input, $default_charset=false)
    {
        if (!$this->_decode_headers) {
            return $input;
        }
        // Remove white space between encoded-words
        $input = preg_replace('/(=\?[^?]+\?(q|b)\?[^?]*\?=)(\s)+=\?/i', '\1=?', $input);

        // For each encoded-word...
        while (preg_match('/(=\?([^?]+)\?(q|b)\?([^?]*)\?=)/i', $input, $matches)) {

            $encoded  = $matches[1];
            $charset  = $matches[2];
            $encoding = $matches[3];
            $text     = $matches[4];

            switch (strtolower($encoding)) {
                case 'b':
                    $text = base64_decode($text);
                    break;

                case 'q':
                    $text = str_replace('_', ' ', $text);
                    preg_match_all('/=([a-f0-9]{2})/i', $text, $matches);
                    foreach($matches[1] as $value)
                        $text = str_replace('='.$value, chr(hexdec($value)), $text);
                    break;
            }
            if (is_string($this->_decode_headers)) {
                $conv = @iconv($charset, $this->_decode_headers, $text);
                $text = ($conv === false) ? $text : $conv;
            }
            $input = str_replace($encoded, $text, $input);
        }
        
        if ($default_charset  && is_string($this->_decode_headers)) {
            $conv = @iconv($charset, $this->_decode_headers, $input);
            $input = ($conv === false) ? $input : $conv;
        }
        
        return $input;
    }

    /**
     * Given a body string and an encoding type,
     * this function will decode and return it.
     *
     * @param  string Input body to decode
     * @param  string Encoding type to use.
     * @return string Decoded body
     * @access private
     */
    function _decodeBody($input, $encoding = '7bit')
    {
        switch (strtolower($encoding)) {
            case '7bit':
                return $input;
                break;

            case 'quoted-printable':
                return $this->_quotedPrintableDecode($input);
                break;

            case 'base64':
                return base64_decode($input);
                break;

            default:
                return $input;
        }
    }

    /**
     * Given a quoted-printable string, this
     * function will decode and return it.
     *
     * @param  string Input body to decode
     * @return string Decoded body
     * @access private
     */
    function _quotedPrintableDecode($input)
    {
        // Remove soft line breaks
        $input = preg_replace("/=\r?\n/", '', $input);

        // Replace encoded characters
		 
        $cb = create_function('$matches',  ' return chr(hexdec($matches[0]));');
         
        $input = preg_replace_callback( '/=([a-f0-9]{2})/i', $cb, $input);

        return $input;
    }

    /**
     * Checks the input for uuencoded files and returns
     * an array of them. Can be called statically, eg:
     *
     * $files =& Mail_mimeDecode::uudecode($some_text);
     *
     * It will check for the begin 666 ... end syntax
     * however and won't just blindly decode whatever you
     * pass it.
     *
     * @param  string Input body to look for attahcments in
     * @return array  Decoded bodies, filenames and permissions
     * @access public
     * @author Unknown
     */
    function &uudecode($input)
    {
        // Find all uuencoded sections
        preg_match_all("/begin ([0-7]{3}) (.+)\r?\n(.+)\r?\nend/Us", $input, $matches);

        for ($j = 0; $j < count($matches[3]); $j++) {

            $str      = $matches[3][$j];
            $filename = $matches[2][$j];
            $fileperm = $matches[1][$j];

            $file = '';
            $str = preg_split("/\r?\n/", trim($str));
            $strlen = count($str);

            for ($i = 0; $i < $strlen; $i++) {
                $pos = 1;
                $d = 0;
                $len=(int)(((ord(substr($str[$i],0,1)) -32) - ' ') & 077);

                while (($d + 3 <= $len) AND ($pos + 4 <= strlen($str[$i]))) {
                    $c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
                    $c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
                    $c2 = (ord(substr($str[$i],$pos+2,1)) ^ 0x20);
                    $c3 = (ord(substr($str[$i],$pos+3,1)) ^ 0x20);
                    $file .= chr(((($c0 - ' ') & 077) << 2) | ((($c1 - ' ') & 077) >> 4));

                    $file .= chr(((($c1 - ' ') & 077) << 4) | ((($c2 - ' ') & 077) >> 2));

                    $file .= chr(((($c2 - ' ') & 077) << 6) |  (($c3 - ' ') & 077));

                    $pos += 4;
                    $d += 3;
                }

                if (($d + 2 <= $len) && ($pos + 3 <= strlen($str[$i]))) {
                    $c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
                    $c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
                    $c2 = (ord(substr($str[$i],$pos+2,1)) ^ 0x20);
                    $file .= chr(((($c0 - ' ') & 077) << 2) | ((($c1 - ' ') & 077) >> 4));

                    $file .= chr(((($c1 - ' ') & 077) << 4) | ((($c2 - ' ') & 077) >> 2));

                    $pos += 3;
                    $d += 2;
                }

                if (($d + 1 <= $len) && ($pos + 2 <= strlen($str[$i]))) {
                    $c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
                    $c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
                    $file .= chr(((($c0 - ' ') & 077) << 2) | ((($c1 - ' ') & 077) >> 4));

                }
            }
            $files[] = array('filename' => $filename, 'fileperm' => $fileperm, 'filedata' => $file);
        }

        return $files;
    }

    /**
     * getSendArray() returns the arguments required for Mail::send()
     * used to build the arguments for a mail::send() call 
     *
     * Usage:
     * $mailtext = Full email (for example generated by a template)
     * $decoder = new Mail_mimeDecode($mailtext);
     * $parts =  $decoder->getSendArray();
     * if (!PEAR::isError($parts) {
     *     list($recipents,$headers,$body) = $parts;
     *     $mail = Mail::factory('smtp');
     *     $mail->send($recipents,$headers,$body);
     * } else {
     *     echo $parts->message;
     * }
     * @return mixed   array of recipeint, headers,body or Pear_Error
     * @access public
     * @author Alan Knowles <alan@akbkhome.com>
     */
    function getSendArray()
    {
        // prevent warning if this is not set
        $this->_decode_headers = FALSE;
        $headerlist =$this->_parseHeaders($this->_header);
        $to = "";
        if (!$headerlist) {
            return $this->raiseError("Message did not contain headers");
        }
        foreach($headerlist as $item) {
            $header[$item['name']] = $item['value'];
            switch (strtolower($item['name'])) {
                case "to":
                case "cc":
                case "bcc":
                    $to .= ",".$item['value'];
                default:
                   break;
            }
        }
        if ($to == "") {
            return $this->raiseError("Message did not contain any recipents");
        }
        $to = substr($to,1);
        return array($to,$header,$this->_body);
    } 

    /**
     * Returns a xml copy of the output of
     * Mail_mimeDecode::decode. Pass the output in as the
     * argument. This function can be called statically. Eg:
     *
     * $output = $obj->decode();
     * $xml    = Mail_mimeDecode::getXML($output);
     *
     * The DTD used for this should have been in the package. Or
     * alternatively you can get it from cvs, or here:
     * http://www.phpguru.org/xmail/xmail.dtd.
     *
     * @param  object Input to convert to xml. This should be the
     *                output of the Mail_mimeDecode::decode function
     * @return string XML version of input
     * @access public
     */
    function getXML($input)
    {
        $crlf    =  "\r\n";
        $output  = '<?xml version=\'1.0\'?>' . $crlf .
                   '<!DOCTYPE email SYSTEM "http://www.phpguru.org/xmail/xmail.dtd">' . $crlf .
                   '<email>' . $crlf .
                   Mail_mimeDecode::_getXML($input) .
                   '</email>';

        return $output;
    }

    /**
     * Function that does the actual conversion to xml. Does a single
     * mimepart at a time.
     *
     * @param  object  Input to convert to xml. This is a mimepart object.
     *                 It may or may not contain subparts.
     * @param  integer Number of tabs to indent
     * @return string  XML version of input
     * @access private
     */
    function _getXML($input, $indent = 1)
    {
        $htab    =  "\t";
        $crlf    =  "\r\n";
        $output  =  '';
        $headers = @(array)$input->headers;

        foreach ($headers as $hdr_name => $hdr_value) {

            // Multiple headers with this name
            if (is_array($headers[$hdr_name])) {
                for ($i = 0; $i < count($hdr_value); $i++) {
                    $output .= Mail_mimeDecode::_getXML_helper($hdr_name, $hdr_value[$i], $indent);
                }

            // Only one header of this sort
            } else {
                $output .= Mail_mimeDecode::_getXML_helper($hdr_name, $hdr_value, $indent);
            }
        }

        if (!empty($input->parts)) {
            for ($i = 0; $i < count($input->parts); $i++) {
                $output .= $crlf . str_repeat($htab, $indent) . '<mimepart>' . $crlf .
                           Mail_mimeDecode::_getXML($input->parts[$i], $indent+1) .
                           str_repeat($htab, $indent) . '</mimepart>' . $crlf;
            }
        } elseif (isset($input->body)) {
            $output .= $crlf . str_repeat($htab, $indent) . '<body><![CDATA[' .
                       $input->body . ']]></body>' . $crlf;
        }

        return $output;
    }

    /**
     * Helper function to _getXML(). Returns xml of a header.
     *
     * @param  string  Name of header
     * @param  string  Value of header
     * @param  integer Number of tabs to indent
     * @return string  XML version of input
     * @access private
     */
    function _getXML_helper($hdr_name, $hdr_value, $indent)
    {
        $htab   = "\t";
        $crlf   = "\r\n";
        $return = '';

        $new_hdr_value = ($hdr_name != 'received') ? Mail_mimeDecode::_parseHeaderValue($hdr_value) : array('value' => $hdr_value);
        $new_hdr_name  = str_replace(' ', '-', ucwords(str_replace('-', ' ', $hdr_name)));

        // Sort out any parameters
        if (!empty($new_hdr_value['other'])) {
            foreach ($new_hdr_value['other'] as $paramname => $paramvalue) {
                $params[] = str_repeat($htab, $indent) . $htab . '<parameter>' . $crlf .
                            str_repeat($htab, $indent) . $htab . $htab . '<paramname>' . htmlspecialchars($paramname) . '</paramname>' . $crlf .
                            str_repeat($htab, $indent) . $htab . $htab . '<paramvalue>' . htmlspecialchars($paramvalue) . '</paramvalue>' . $crlf .
                            str_repeat($htab, $indent) . $htab . '</parameter>' . $crlf;
            }

            $params = implode('', $params);
        } else {
            $params = '';
        }

        $return = str_repeat($htab, $indent) . '<header>' . $crlf .
                  str_repeat($htab, $indent) . $htab . '<headername>' . htmlspecialchars($new_hdr_name) . '</headername>' . $crlf .
                  str_repeat($htab, $indent) . $htab . '<headervalue>' . htmlspecialchars($new_hdr_value['value']) . '</headervalue>' . $crlf .
                  $params .
                  str_repeat($htab, $indent) . '</header>' . $crlf;

        return $return;
    }

} // End of class
PK\1[B�_Ǭ=�=smtp.phpnu�[���<?php
/**
 * SMTP implementation of the PEAR Mail interface. Requires the Net_SMTP class.
 *
 * 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    HTTP
 * @package     HTTP_Request
 * @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/
 */

/** Error: Failed to create a Net_SMTP object */
define('PEAR_MAIL_SMTP_ERROR_CREATE', 10000);

/** Error: Failed to connect to SMTP server */
define('PEAR_MAIL_SMTP_ERROR_CONNECT', 10001);

/** Error: SMTP authentication failure */
define('PEAR_MAIL_SMTP_ERROR_AUTH', 10002);

/** Error: No From: address has been provided */
define('PEAR_MAIL_SMTP_ERROR_FROM', 10003);

/** Error: Failed to set sender */
define('PEAR_MAIL_SMTP_ERROR_SENDER', 10004);

/** Error: Failed to add recipient */
define('PEAR_MAIL_SMTP_ERROR_RECIPIENT', 10005);

/** Error: Failed to send data */
define('PEAR_MAIL_SMTP_ERROR_DATA', 10006);

/**
 * SMTP implementation of the PEAR Mail interface. Requires the Net_SMTP class.
 * @access public
 * @package Mail
 * @version $Revision$
 */
class Mail_smtp extends Mail {

    /**
     * SMTP connection object.
     *
     * @var object
     * @access private
     */
    var $_smtp = null;

    /**
     * The list of service extension parameters to pass to the Net_SMTP
     * mailFrom() command.
     *
     * @var array
     */
    var $_extparams = array();

    /**
     * The SMTP host to connect to.
     *
     * @var string
     */
    var $host = 'localhost';

    /**
     * The port the SMTP server is on.
     *
     * @var integer
     */
    var $port = 25;

    /**
     * Should SMTP authentication be used?
     *
     * This value may be set to true, false or the name of a specific
     * authentication method.
     *
     * If the value is set to true, the Net_SMTP package will attempt to use
     * the best authentication method advertised by the remote SMTP server.
     *
     * @var mixed
     */
    var $auth = false;

    /**
     * The username to use if the SMTP server requires authentication.
     *
     * @var string
     */
    var $username = '';

    /**
     * The password to use if the SMTP server requires authentication.
     *
     * @var string
     */
    var $password = '';

    /**
     * Hostname or domain that will be sent to the remote SMTP server in the
     * HELO / EHLO message.
     *
     * @var string
     */
    var $localhost = 'localhost';

    /**
     * SMTP connection timeout value.  NULL indicates no timeout.
     *
     * @var integer
     */
    var $timeout = null;

    /**
     * Turn on Net_SMTP debugging?
     *
     * @var boolean $debug
     */
    var $debug = false;

    /**
     * Indicates whether or not the SMTP connection should persist over
     * multiple calls to the send() method.
     *
     * @var boolean
     */
    var $persist = false;

    /**
     * Use SMTP command pipelining (specified in RFC 2920) if the SMTP server
     * supports it. This speeds up delivery over high-latency connections. By
     * default, use the default value supplied by Net_SMTP.
     *
     * @var boolean
     */
    var $pipelining;

    /**
     * The list of socket options
     *
     * @var array
     */
    var $socket_options = array();

    /**
     * Constructor.
     *
     * Instantiates a new Mail_smtp:: object based on the parameters
     * passed in. It looks for the following parameters:
     *     host        The server to connect to. Defaults to localhost.
     *     port        The port to connect to. Defaults to 25.
     *     auth        SMTP authentication.  Defaults to none.
     *     username    The username to use for SMTP auth. No default.
     *     password    The password to use for SMTP auth. No default.
     *     localhost   The local hostname / domain. Defaults to localhost.
     *     timeout     The SMTP connection timeout. Defaults to none.
     *     verp        Whether to use VERP or not. Defaults to false.
     *                 DEPRECATED as of 1.2.0 (use setMailParams()).
     *     debug       Activate SMTP debug mode? Defaults to false.
     *     persist     Should the SMTP connection persist?
     *     pipelining  Use SMTP command pipelining
     *
     * If a parameter is present in the $params array, it replaces the
     * default.
     *
     * @param array Hash containing any parameters different from the
     *              defaults.
     */
    public function __construct($params)
    {
        if (isset($params['host'])) $this->host = $params['host'];
        if (isset($params['port'])) $this->port = $params['port'];
        if (isset($params['auth'])) $this->auth = $params['auth'];
        if (isset($params['username'])) $this->username = $params['username'];
        if (isset($params['password'])) $this->password = $params['password'];
        if (isset($params['localhost'])) $this->localhost = $params['localhost'];
        if (isset($params['timeout'])) $this->timeout = $params['timeout'];
        if (isset($params['debug'])) $this->debug = (bool)$params['debug'];
        if (isset($params['persist'])) $this->persist = (bool)$params['persist'];
        if (isset($params['pipelining'])) $this->pipelining = (bool)$params['pipelining'];
        if (isset($params['socket_options'])) $this->socket_options = $params['socket_options'];
        // Deprecated options
        if (isset($params['verp'])) {
            $this->addServiceExtensionParameter('XVERP', is_bool($params['verp']) ? null : $params['verp']);
        }
    }

    /**
     * Destructor implementation to ensure that we disconnect from any
     * potentially-alive persistent SMTP connections.
     */
    public function __destruct()
    {
        $this->disconnect();
    }

    /**
     * Implements Mail::send() function using SMTP.
     *
     * @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 (e.g., 'Subject'), and the array value
     *              is the header value (e.g., '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)
    {
        $result = $this->send_or_fail($recipients, $headers, $body);

        /* If persistent connections are disabled, destroy our SMTP object. */
        if ($this->persist === false) {
            $this->disconnect();
        }

        return $result;
    }

    protected function send_or_fail($recipients, $headers, $body)
    {
        /* If we don't already have an SMTP object, create one. */
        $result = $this->getSMTPObject();
        if (PEAR::isError($result)) {
            return $result;
        }

        if (!is_array($headers)) {
            return PEAR::raiseError('$headers must be an array');
        }

        $this->_sanitizeHeaders($headers);

        $headerElements = $this->prepareHeaders($headers);
        if (is_a($headerElements, 'PEAR_Error')) {
            $this->_smtp->rset();
            return $headerElements;
        }
        list($from, $textHeaders) = $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)) {
            $this->_smtp->rset();
            return PEAR::raiseError('No From: address has been provided',
                                    PEAR_MAIL_SMTP_ERROR_FROM);
        }

        $params = null;
        if (!empty($this->_extparams)) {
            foreach ($this->_extparams as $key => $val) {
                $params .= ' ' . $key . (is_null($val) ? '' : '=' . $val);
            }
        }
        if (PEAR::isError($res = $this->_smtp->mailFrom($from, ltrim($params)))) {
            $error = $this->_error("Failed to set sender: $from", $res);
            $this->_smtp->rset();
            return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_SENDER);
        }

        $recipients = $this->parseRecipients($recipients);
        if (is_a($recipients, 'PEAR_Error')) {
            $this->_smtp->rset();
            return $recipients;
        }

        foreach ($recipients as $recipient) {
            $res = $this->_smtp->rcptTo($recipient);
            if (is_a($res, 'PEAR_Error')) {
                $error = $this->_error("Failed to add recipient: $recipient", $res);
                $this->_smtp->rset();
                return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_RECIPIENT);
            }
        }

        /* Send the message's headers and the body as SMTP data. */
        $res = $this->_smtp->data($body, $textHeaders);
        list(,$args) = $this->_smtp->getResponse();

        if (preg_match("/ queued as (.*)/", $args, $queued)) {
            $this->queued_as = $queued[1];
        }

        /* we need the greeting; from it we can extract the authorative name of the mail server we've really connected to.
         * ideal if we're connecting to a round-robin of relay servers and need to track which exact one took the email */
        $this->greeting = $this->_smtp->getGreeting();

        if (is_a($res, 'PEAR_Error')) {
            $error = $this->_error('Failed to send data', $res);
            $this->_smtp->rset();
            return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_DATA);
        }

        return true;
    }

    /**
     * Connect to the SMTP server by instantiating a Net_SMTP object.
     *
     * @return mixed Returns a reference to the Net_SMTP object on success, or
     *               a PEAR_Error containing a descriptive error message on
     *               failure.
     *
     * @since  1.2.0
     */
    public function getSMTPObject()
    {
        if (is_object($this->_smtp) !== false) {
            return $this->_smtp;
        }

        include_once 'Net/SMTP.php';
        $this->_smtp = new Net_SMTP($this->host,
                                     $this->port,
                                     $this->localhost,
                                     $this->pipelining,
                                     0,
                                     $this->socket_options);

        /* If we still don't have an SMTP object at this point, fail. */
        if (is_object($this->_smtp) === false) {
            return PEAR::raiseError('Failed to create a Net_SMTP object',
                                    PEAR_MAIL_SMTP_ERROR_CREATE);
        }

        /* Configure the SMTP connection. */
        if ($this->debug) {
            $this->_smtp->setDebug(true);
        }

        /* Attempt to connect to the configured SMTP server. */
        if (PEAR::isError($res = $this->_smtp->connect($this->timeout))) {
            $error = $this->_error('Failed to connect to ' .
                                   $this->host . ':' . $this->port,
                                   $res);
            return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_CONNECT);
        }

        /* Attempt to authenticate if authentication has been enabled. */
        if ($this->auth) {
            $method = is_string($this->auth) ? $this->auth : '';

            if (PEAR::isError($res = $this->_smtp->auth($this->username,
                                                        $this->password,
                                                        $method))) {
                $error = $this->_error("$method authentication failure",
                                       $res);
                $this->_smtp->rset();
                return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_AUTH);
            }
        }

        return $this->_smtp;
    }

    /**
     * Add parameter associated with a SMTP service extension.
     *
     * @param string Extension keyword.
     * @param string Any value the keyword needs.
     *
     * @since 1.2.0
     */
    public function addServiceExtensionParameter($keyword, $value = null)
    {
        $this->_extparams[$keyword] = $value;
    }

    /**
     * Disconnect and destroy the current SMTP connection.
     *
     * @return boolean True if the SMTP connection no longer exists.
     *
     * @since  1.1.9
     */
    public function disconnect()
    {
        /* If we have an SMTP object, disconnect and destroy it. */
        if (is_object($this->_smtp) && $this->_smtp->disconnect()) {
            $this->_smtp = null;
        }

        /* We are disconnected if we no longer have an SMTP object. */
        return ($this->_smtp === null);
    }

    /**
     * Build a standardized string describing the current SMTP error.
     *
     * @param string $text  Custom string describing the error context.
     * @param object $error Reference to the current PEAR_Error object.
     *
     * @return string       A string describing the current SMTP error.
     *
     * @since  1.1.7
     */
    protected function _error($text, $error)
    {
        /* Split the SMTP response into a code and a response string. */
        list($code, $response) = $this->_smtp->getResponse();

        /* Build our standardized error string. */
        return $text
            . ' [SMTP: ' . $error->getMessage()
            . " (code: $code, response: $response)]";
    }

}
PK\1[wԐE;E;
smtpmx.phpnu�[���<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/**
 * SMTP MX
 *
 * SMTP MX implementation of the PEAR Mail interface. Requires the Net_SMTP class.
 *
 * PHP version 5
 *
 * LICENSE:
 *
 * Copyright (c) 2010-2017 gERD Schaufelberger
 * 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_smtpmx
 * @author     gERD Schaufelberger <gerd@php-tools.net>
 * @copyright  2010-2017 gERD Schaufelberger
 * @license    http://opensource.org/licenses/BSD-3-Clause New BSD License
 * @version    CVS: $Id$
 * @link       http://pear.php.net/package/Mail/
 */

require_once 'Net/SMTP.php';

/**
 * SMTP MX implementation of the PEAR Mail interface. Requires the Net_SMTP class.
 *
 *
 * @access public
 * @author  gERD Schaufelberger <gerd@php-tools.net>
 * @package Mail
 * @version $Revision$
 */
class Mail_smtpmx extends Mail {

    /**
     * SMTP connection object.
     *
     * @var object
     * @access private
     */
    var $_smtp = null;

    /**
     * The port the SMTP server is on.
     * @var integer
     * @see getservicebyname()
     */
    var $port = 25;

    /**
     * Hostname or domain that will be sent to the remote SMTP server in the
     * HELO / EHLO message.
     *
     * @var string
     * @see posix_uname()
     */
    var $mailname = 'localhost';

    /**
     * SMTP connection timeout value.  NULL indicates no timeout.
     *
     * @var integer
     */
    var $timeout = 10;

    /**
     * use either PEAR:Net_DNS or getmxrr
     *
     * @var boolean
     */
    var $withNetDns = true;

    /**
     * PEAR:Net_DNS_Resolver
     *
     * @var object
     */
    var $resolver;

    /**
     * Whether to use VERP or not. If not a boolean, the string value
     * will be used as the VERP separators.
     *
     * @var mixed boolean or string
     */
    var $verp = false;

    /**
     * Whether to use VRFY or not.
     *
     * @var boolean $vrfy
     */
    var $vrfy = false;

    /**
     * Switch to test mode - don't send emails for real
     *
     * @var boolean $debug
     */
    var $test = false;

    /**
     * Turn on Net_SMTP debugging?
     *
     * @var boolean $peardebug
     */
    var $debug = false;

    /**
     * internal error codes
     *
     * translate internal error identifier to PEAR-Error codes and human
     * readable messages.
     *
     * @var boolean $debug
     * @todo as I need unique error-codes to identify what exactly went wrond
     *       I did not use intergers as it should be. Instead I added a "namespace"
     *       for each code. This avoids conflicts with error codes from different
     *       classes. How can I use unique error codes and stay conform with PEAR?
     */
    var $errorCode = array(
        'not_connected' => array(
            'code'  => 1,
            'msg'   => 'Could not connect to any mail server ({HOST}) at port {PORT} to send mail to {RCPT}.'
        ),
        'failed_vrfy_rcpt' => array(
            'code'  => 2,
            'msg'   => 'Recipient "{RCPT}" could not be veryfied.'
        ),
        'failed_set_from' => array(
            'code'  => 3,
            'msg'   => 'Failed to set sender: {FROM}.'
        ),
        'failed_set_rcpt' => array(
            'code'  => 4,
            'msg'   => 'Failed to set recipient: {RCPT}.'
        ),
        'failed_send_data' => array(
            'code'  => 5,
            'msg'   => 'Failed to send mail to: {RCPT}.'
        ),
        'no_from' => array(
            'code'  => 5,
            'msg'   => 'No from address has be provided.'
        ),
        'send_data' => array(
            'code'  => 7,
            'msg'   => 'Failed to create Net_SMTP object.'
        ),
        'no_mx' => array(
            'code'  => 8,
            'msg'   => 'No MX-record for {RCPT} found.'
        ),
        'no_resolver' => array(
            'code'  => 9,
            'msg'   => 'Could not start resolver! Install PEAR:Net_DNS or switch off "netdns"'
        ),
        'failed_rset' => array(
            'code'  => 10,
            'msg'   => 'RSET command failed, SMTP-connection corrupt.'
        ),
    );

    /**
     * Constructor.
     *
     * Instantiates a new Mail_smtp:: object based on the parameters
     * passed in. It looks for the following parameters:
     *     mailname    The name of the local mail system (a valid hostname which matches the reverse lookup)
     *     port        smtp-port - the default comes from getservicebyname() and should work fine
     *     timeout     The SMTP connection timeout. Defaults to 30 seconds.
     *     vrfy        Whether to use VRFY or not. Defaults to false.
     *     verp        Whether to use VERP or not. Defaults to false.
     *     test        Activate test mode? Defaults to false.
     *     debug       Activate SMTP and Net_DNS debug mode? Defaults to false.
     *     netdns      whether to use PEAR:Net_DNS or the PHP build in function getmxrr, default is true
     *
     * If a parameter is present in the $params array, it replaces the
     * default.
     *
     * @access public
     * @param array Hash containing any parameters different from the
     *              defaults.
     * @see _Mail_smtpmx()
     */
    function __construct($params)
    {
        if (isset($params['mailname'])) {
            $this->mailname = $params['mailname'];
        } else {
            // try to find a valid mailname
            if (function_exists('posix_uname')) {
                $uname = posix_uname();
                $this->mailname = $uname['nodename'];
            }
        }

        // port number
        if (isset($params['port'])) {
            $this->_port = $params['port'];
        } else {
            $this->_port = getservbyname('smtp', 'tcp');
        }

        if (isset($params['timeout'])) $this->timeout = $params['timeout'];
        if (isset($params['verp'])) $this->verp = $params['verp'];
        if (isset($params['test'])) $this->test = $params['test'];
        if (isset($params['peardebug'])) $this->test = $params['peardebug'];
        if (isset($params['netdns'])) $this->withNetDns = $params['netdns'];
    }

    /**
     * Constructor wrapper for PHP4
     *
     * @access public
     * @param array Hash containing any parameters different from the defaults
     * @see __construct()
     */
    function Mail_smtpmx($params)
    {
        $this->__construct($params);
        register_shutdown_function(array(&$this, '__destruct'));
    }

    /**
     * Destructor implementation to ensure that we disconnect from any
     * potentially-alive persistent SMTP connections.
     */
    function __destruct()
    {
        if (is_object($this->_smtp)) {
            $this->_smtp->disconnect();
            $this->_smtp = null;
        }
    }

    /**
     * Implements Mail::send() function using SMTP direct delivery
     *
     * @access public
     * @param mixed $recipients in RFC822 style or array
     * @param array $headers The array of headers to send with the mail.
     * @param string $body The full text of the message body,
     * @return mixed Returns true on success, or a PEAR_Error
     */
    function send($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;
        }

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

        // use 'Return-Path' if possible
        if (!empty($headers['Return-Path'])) {
            $from = $headers['Return-Path'];
        }
        if (!isset($from)) {
            return $this->_raiseError('no_from');
        }

        // Prepare recipients
        $recipients = $this->parseRecipients($recipients);
        if (is_a($recipients, 'PEAR_Error')) {
            return $recipients;
        }

        foreach ($recipients as $rcpt) {
            list($user, $host) = explode('@', $rcpt);

            $mx = $this->_getMx($host);
            if (is_a($mx, 'PEAR_Error')) {
                return $mx;
            }

            if (empty($mx)) {
                $info = array('rcpt' => $rcpt);
                return $this->_raiseError('no_mx', $info);
            }

            $connected = false;
            foreach ($mx as $mserver => $mpriority) {
                $this->_smtp = new Net_SMTP($mserver, $this->port, $this->mailname);

                // configure the SMTP connection.
                if ($this->debug) {
                    $this->_smtp->setDebug(true);
                }

                // attempt to connect to the configured SMTP server.
                $res = $this->_smtp->connect($this->timeout);
                if (is_a($res, 'PEAR_Error')) {
                    $this->_smtp = null;
                    continue;
                }

                // connection established
                if ($res) {
                    $connected = true;
                    break;
                }
            }

            if (!$connected) {
                $info = array(
                    'host' => implode(', ', array_keys($mx)),
                    'port' => $this->port,
                    'rcpt' => $rcpt,
                );
                return $this->_raiseError('not_connected', $info);
            }

            // Verify recipient
            if ($this->vrfy) {
                $res = $this->_smtp->vrfy($rcpt);
                if (is_a($res, 'PEAR_Error')) {
                    $info = array('rcpt' => $rcpt);
                    return $this->_raiseError('failed_vrfy_rcpt', $info);
                }
            }

            // mail from:
            $args['verp'] = $this->verp;
            $res = $this->_smtp->mailFrom($from, $args);
            if (is_a($res, 'PEAR_Error')) {
                $info = array('from' => $from);
                return $this->_raiseError('failed_set_from', $info);
            }

            // rcpt to:
            $res = $this->_smtp->rcptTo($rcpt);
            if (is_a($res, 'PEAR_Error')) {
                $info = array('rcpt' => $rcpt);
                return $this->_raiseError('failed_set_rcpt', $info);
            }

            // Don't send anything in test mode
            if ($this->test) {
                $result = $this->_smtp->rset();
                $res = $this->_smtp->rset();
                if (is_a($res, 'PEAR_Error')) {
                    return $this->_raiseError('failed_rset');
                }

                $this->_smtp->disconnect();
                $this->_smtp = null;
                return true;
            }

            // Send data
            $res = $this->_smtp->data($body, $textHeaders);
            if (is_a($res, 'PEAR_Error')) {
                $info = array('rcpt' => $rcpt);
                return $this->_raiseError('failed_send_data', $info);
            }

            $this->_smtp->disconnect();
            $this->_smtp = null;
        }

        return true;
    }

    /**
     * Recieve mx rexords for a spciefied host
     *
     * The MX records
     *
     * @access private
     * @param string $host mail host
     * @return mixed sorted
     */
    function _getMx($host)
    {
        $mx = array();

        if ($this->withNetDns) {
            $res = $this->_loadNetDns();
            if (is_a($res, 'PEAR_Error')) {
                return $res;
            }

            $response = $this->resolver->query($host, 'MX');
            if (!$response) {
                return false;
            }

            foreach ($response->answer as $rr) {
                if ($rr->type == 'MX') {
                    $mx[$rr->exchange] = $rr->preference;
                }
            }
        } else {
            $mxHost = array();
            $mxWeight = array();

            if (!getmxrr($host, $mxHost, $mxWeight)) {
                return false;
            }
            for ($i = 0; $i < count($mxHost); ++$i) {
                $mx[$mxHost[$i]] = $mxWeight[$i];
            }
        }

        asort($mx);
        return $mx;
    }

    /**
     * initialize PEAR:Net_DNS_Resolver
     *
     * @access private
     * @return boolean true on success
     */
    function _loadNetDns()
    {
        if (is_object($this->resolver)) {
            return true;
        }

        if (!include_once 'Net/DNS.php') {
            return $this->_raiseError('no_resolver');
        }

        $this->resolver = new Net_DNS_Resolver();
        if ($this->debug) {
            $this->resolver->test = 1;
        }

        return true;
    }

    /**
     * raise standardized error
     *
     * include additional information in error message
     *
     * @access private
     * @param string $id maps error ids to codes and message
     * @param array $info optional information in associative array
     * @see _errorCode
     */
    function _raiseError($id, $info = array())
    {
        $code = $this->errorCode[$id]['code'];
        $msg = $this->errorCode[$id]['msg'];

        // include info to messages
        if (!empty($info)) {
            $search = array();
            $replace = array();

            foreach ($info as $key => $value) {
                array_push($search, '{' . strtoupper($key) . '}');
                array_push($replace, $value);
            }

            $msg = str_replace($search, $replace, $msg);
        }

        return PEAR::raiseError($msg, $code);
    }

}
PK\1[�؛�J�J�mimePart.phpnu�[���<?php
/**
 * The Mail_mimePart class is used to create MIME E-mail messages
 *
 * This class enables you to manipulate and build a mime email
 * from the ground up. The Mail_Mime class is a userfriendly api
 * to this class for people who aren't interested in the internals
 * of mime mail.
 * This class however allows full control over the email.
 *
 * Compatible with PHP version 5, 7 and 8
 *
 * LICENSE: This LICENSE is in the BSD license style.
 * Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
 * Copyright (c) 2003-2006, PEAR <pear-group@php.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - Neither the name of the authors, 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 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_Mime
 * @author    Richard Heyes  <richard@phpguru.org>
 * @author    Cipriano Groenendal <cipri@php.net>
 * @author    Sean Coates <sean@php.net>
 * @author    Aleksander Machniak <alec@php.net>
 * @copyright 2003-2006 PEAR <pear-group@php.net>
 * @license   http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version   Release: @package_version@
 * @link      http://pear.php.net/package/Mail_mime
 */

/**
 * Require PEAR
 *
 * This package depends on PEAR to raise errors.
 */
require_once 'PEAR.php';

/**
 * The Mail_mimePart class is used to create MIME E-mail messages
 *
 * This class enables you to manipulate and build a mime email
 * from the ground up. The Mail_Mime class is a userfriendly api
 * to this class for people who aren't interested in the internals
 * of mime mail.
 * This class however allows full control over the email.
 *
 * @category  Mail
 * @package   Mail_Mime
 * @author    Richard Heyes  <richard@phpguru.org>
 * @author    Cipriano Groenendal <cipri@php.net>
 * @author    Sean Coates <sean@php.net>
 * @author    Aleksander Machniak <alec@php.net>
 * @copyright 2003-2006 PEAR <pear-group@php.net>
 * @license   http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version   Release: @package_version@
 * @link      http://pear.php.net/package/Mail_mime
 */
class Mail_mimePart
{
    /**
     * The encoding type of this part
     *
     * @var string
     */
    protected $encoding;

    /**
     * An array of subparts
     *
     * @var array
     */
    protected $subparts = array();

    /**
     * The output of this part after being built
     *
     * @var string
     */
    protected $encoded;

    /**
     * Headers for this part
     *
     * @var array
     */
    protected $headers = array();

    /**
     * The body of this part (not encoded)
     *
     * @var string
     */
    protected $body;

    /**
     * The location of file with body of this part (not encoded)
     *
     * @var string
     */
    protected $body_file;

    /**
     * The short text of multipart part preamble (RFC2046 5.1.1)
     *
     * @var string
     */
    protected $preamble;

    /**
     * The end-of-line sequence
     *
     * @var string
     */
    protected $eol = "\r\n";


    /**
     * Constructor.
     *
     * Sets up the object.
     *
     * @param string $body   The body of the mime part if any.
     * @param array  $params An associative array of optional parameters:
     *                       - content_type: The content type for this part eg multipart/mixed
     *                       - encoding:  The encoding to use, 7bit, 8bit, base64, or quoted-printable
     *                       - charset: Content character set
     *                       - cid: Content ID to apply
     *                       - disposition: Content disposition, inline or attachment
     *                       - filename: Filename parameter for content disposition
     *                       - description: Content description
     *                       - name_encoding: Encoding of the attachment name (Content-Type)
     *                       By default filenames are encoded using RFC2231
     *                       Here you can set RFC2047 encoding (quoted-printable
     *                       or base64) instead
     *                       - filename_encoding: Encoding of the attachment filename (Content-Disposition)
     *                       See 'name_encoding'
     *                       - headers_charset: Charset of the headers e.g. filename, description.
     *                       If not set, 'charset' will be used
     *                       - eol: End of line sequence. Default: "\r\n"
     *                       - headers: Hash array with additional part headers. Array keys
     *                       can be in form of <header_name>:<parameter_name>
     *                       - body_file: Location of file with part's body (instead of $body)
     *                       - preamble: short text of multipart part preamble (RFC2046 5.1.1)
     */
    public function __construct($body = '', $params = array())
    {
        if (!empty($params['eol'])) {
            $this->eol = $params['eol'];
        } else if (defined('MAIL_MIMEPART_CRLF')) { // backward-copat.
            $this->eol = MAIL_MIMEPART_CRLF;
        }

        // Additional part headers
        if (!empty($params['headers']) && is_array($params['headers'])) {
            $headers = $params['headers'];
        }

        foreach ($params as $key => $value) {
            switch ($key) {
            case 'encoding':
                $this->encoding = $value;
                $headers['Content-Transfer-Encoding'] = $value;
                break;

            case 'cid':
                $headers['Content-ID'] = '<' . $value . '>';
                break;

            case 'location':
                $headers['Content-Location'] = $value;
                break;

            case 'body_file':
                $this->body_file = $value;
                break;

            case 'preamble':
                $this->preamble = $value;
                break;

            // for backward compatibility
            case 'dfilename':
                $params['filename'] = $value;
                break;
            }
        }

        // Default content-type
        if (empty($params['content_type'])) {
            $params['content_type'] = 'text/plain';
        }

        // Content-Type
        $headers['Content-Type'] = $params['content_type'];
        if (!empty($params['charset'])) {
            $charset = "charset={$params['charset']}";
            // place charset parameter in the same line, if possible
            if ((strlen($headers['Content-Type']) + strlen($charset) + 16) <= 76) {
                $headers['Content-Type'] .= '; ';
            } else {
                $headers['Content-Type'] .= ';' . $this->eol . ' ';
            }
            $headers['Content-Type'] .= $charset;

            // Default headers charset
            if (!isset($params['headers_charset'])) {
                $params['headers_charset'] = $params['charset'];
            }
        }

        // header values encoding parameters
        $h_charset  = !empty($params['headers_charset']) ? $params['headers_charset'] : 'US-ASCII';
        $h_language = !empty($params['language']) ? $params['language'] : null;
        $h_encoding = !empty($params['name_encoding']) ? $params['name_encoding'] : null;

        if (!empty($params['filename'])) {
            $headers['Content-Type'] .= ';' . $this->eol;
            $headers['Content-Type'] .= $this->buildHeaderParam(
                'name', $params['filename'], $h_charset, $h_language, $h_encoding
            );
        }

        // Content-Disposition
        if (!empty($params['disposition'])) {
            $headers['Content-Disposition'] = $params['disposition'];
            if (!empty($params['filename'])) {
                $headers['Content-Disposition'] .= ';' . $this->eol;
                $headers['Content-Disposition'] .= $this->buildHeaderParam(
                    'filename', $params['filename'], $h_charset, $h_language,
                    !empty($params['filename_encoding']) ? $params['filename_encoding'] : null
                );
            }

            // add attachment size
            $size = $this->body_file ? filesize($this->body_file) : strlen($body);
            if ($size) {
                $headers['Content-Disposition'] .= ';' . $this->eol . ' size=' . $size;
            }
        }

        if (!empty($params['description'])) {
            $headers['Content-Description'] = $this->encodeHeader(
                'Content-Description', $params['description'], $h_charset, $h_encoding,
                $this->eol
            );
        }

        // Search and add existing headers' parameters
        foreach ($headers as $key => $value) {
            $items = explode(':', $key);
            if (count($items) == 2) {
                $header = $items[0];
                $param  = $items[1];
                if (isset($headers[$header])) {
                    $headers[$header] .= ';' . $this->eol;
                }
                $headers[$header] .= $this->buildHeaderParam(
                    $param, $value, $h_charset, $h_language, $h_encoding
                );
                unset($headers[$key]);
            }
        }

        // Default encoding
        if (!isset($this->encoding)) {
            $this->encoding = '7bit';
        }

        // Assign stuff to member variables
        $this->encoded  = array();
        $this->headers  = $headers;
        $this->body     = $body;
    }

    /**
     * Encodes and returns the email. Also stores
     * it in the encoded member variable
     *
     * @param string $boundary Pre-defined boundary string
     *
     * @return An associative array containing two elements,
     *         body and headers. The headers element is itself
     *         an indexed array. On error returns PEAR error object.
     */
    public function encode($boundary=null)
    {
        $encoded =& $this->encoded;

        if (count($this->subparts)) {
            $boundary = $boundary ? $boundary : '=_' . md5(rand() . microtime());
            $eol = $this->eol;

            $this->headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";

            $encoded['body'] = '';

            if ($this->preamble) {
                $encoded['body'] .= $this->preamble . $eol . $eol;
            }

            for ($i = 0; $i < count($this->subparts); $i++) {
                $encoded['body'] .= '--' . $boundary . $eol;
                $tmp = $this->subparts[$i]->encode();
                if (is_a($tmp, 'PEAR_Error')) {
                    return $tmp;
                }
                foreach ($tmp['headers'] as $key => $value) {
                    $encoded['body'] .= $key . ': ' . $value . $eol;
                }
                $encoded['body'] .= $eol . $tmp['body'] . $eol;
            }

            $encoded['body'] .= '--' . $boundary . '--' . $eol;
        } else if ($this->body) {
            $encoded['body'] = $this->getEncodedData($this->body, $this->encoding);
        } else if ($this->body_file) {
            // Temporarily reset magic_quotes_runtime for file reads and writes
            if (version_compare(PHP_VERSION, '5.4.0', '<')) {
                $magic_quotes = @ini_set('magic_quotes_runtime', 0);
            }
            $body = $this->getEncodedDataFromFile($this->body_file, $this->encoding);
            if (isset($magic_quotes)) {
                @ini_set('magic_quotes_runtime', $magic_quotes);
            }

            if (is_a($body, 'PEAR_Error')) {
                return $body;
            }
            $encoded['body'] = $body;
        } else {
            $encoded['body'] = '';
        }

        // Add headers to $encoded
        $encoded['headers'] =& $this->headers;

        return $encoded;
    }

    /**
     * Encodes and saves the email into file or stream.
     * Data will be appended to the file/stream.
     *
     * @param mixed   $filename  Existing file location
     *                           or file pointer resource
     * @param string  $boundary  Pre-defined boundary string
     * @param boolean $skip_head True if you don't want to save headers
     *
     * @return array An associative array containing message headers
     *               or PEAR error object
     * @since  1.6.0
     */
    public function encodeToFile($filename, $boundary = null, $skip_head = false)
    {
        if (!is_resource($filename)) {
            if (file_exists($filename) && !is_writable($filename)) {
                $err = self::raiseError('File is not writeable: ' . $filename);
                return $err;
            }

            if (!($fh = fopen($filename, 'ab'))) {
                $err = self::raiseError('Unable to open file: ' . $filename);
                return $err;
            }
        } else {
            $fh = $filename;
        }

        // Temporarily reset magic_quotes_runtime for file reads and writes
        if (version_compare(PHP_VERSION, '5.4.0', '<')) {
            $magic_quotes = @ini_set('magic_quotes_runtime', 0);
        }

        $res = $this->encodePartToFile($fh, $boundary, $skip_head);

        if (!is_resource($filename)) {
            fclose($fh);
        }

        if (isset($magic_quotes)) {
            @ini_set('magic_quotes_runtime', $magic_quotes);
        }

        return is_a($res, 'PEAR_Error') ? $res : $this->headers;
    }

    /**
     * Encodes given email part into file
     *
     * @param string  $fh        Output file handle
     * @param string  $boundary  Pre-defined boundary string
     * @param boolean $skip_head True if you don't want to save headers
     *
     * @return array True on sucess or PEAR error object
     */
    protected function encodePartToFile($fh, $boundary = null, $skip_head = false)
    {
        $eol = $this->eol;

        if (count($this->subparts)) {
            $boundary = $boundary ? $boundary : '=_' . md5(rand() . microtime());
            $this->headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";
        }

        if (!$skip_head) {
            foreach ($this->headers as $key => $value) {
                fwrite($fh, $key . ': ' . $value . $eol);
            }
            $f_eol = $eol;
        } else {
            $f_eol = '';
        }

        if (count($this->subparts)) {
            if ($this->preamble) {
                fwrite($fh, $f_eol . $this->preamble . $eol);
                $f_eol = $eol;
            }

            for ($i = 0; $i < count($this->subparts); $i++) {
                fwrite($fh, $f_eol . '--' . $boundary . $eol);
                $res = $this->subparts[$i]->encodePartToFile($fh);
                if (is_a($res, 'PEAR_Error')) {
                    return $res;
                }
                $f_eol = $eol;
            }

            fwrite($fh, $eol . '--' . $boundary . '--' . $eol);
        } else if ($this->body) {
            fwrite($fh, $f_eol);
            fwrite($fh, $this->getEncodedData($this->body, $this->encoding));
        } else if ($this->body_file) {
            fwrite($fh, $f_eol);
            $res = $this->getEncodedDataFromFile(
                $this->body_file, $this->encoding, $fh
            );
            if (is_a($res, 'PEAR_Error')) {
                return $res;
            }
        }

        return true;
    }

    /**
     * Adds a subpart to current mime part and returns
     * a reference to it
     *
     * @param mixed $body   The body of the subpart or Mail_mimePart object
     * @param array $params The parameters for the subpart, same
     *                      as the $params argument for constructor
     *
     * @return Mail_mimePart A reference to the part you just added.
     */
    public function addSubpart($body, $params = null)
    {
        if ($body instanceof Mail_mimePart) {
            $part = $body;
        } else {
            $part = new Mail_mimePart($body, $params);
        }

        $this->subparts[] = $part;

        return $part;
    }

    /**
     * Returns encoded data based upon encoding passed to it
     *
     * @param string $data     The data to encode.
     * @param string $encoding The encoding type to use, 7bit, base64,
     *                         or quoted-printable.
     *
     * @return string Encoded data string
     */
    protected function getEncodedData($data, $encoding)
    {
        switch ($encoding) {
        case 'quoted-printable':
            return self::quotedPrintableEncode($data, 76, $this->eol);
            break;

        case 'base64':
            return rtrim(chunk_split(base64_encode($data), 76, $this->eol));
            break;

        case '8bit':
        case '7bit':
        default:
            return $data;
        }
    }

    /**
     * Returns encoded data based upon encoding passed to it
     *
     * @param string   $filename Data file location
     * @param string   $encoding The encoding type to use, 7bit, base64,
     *                           or quoted-printable.
     * @param resource $fh       Output file handle. If set, data will be
     *                           stored into it instead of returning it
     *
     * @return string Encoded data or PEAR error object
     */
    protected function getEncodedDataFromFile($filename, $encoding, $fh = null)
    {
        if (!is_readable($filename)) {
            $err = self::raiseError('Unable to read file: ' . $filename);
            return $err;
        }

        if (!($fd = fopen($filename, 'rb'))) {
            $err = self::raiseError('Could not open file: ' . $filename);
            return $err;
        }

        $data = '';

        switch ($encoding) {
        case 'quoted-printable':
            while (!feof($fd)) {
                $buffer = self::quotedPrintableEncode(fgets($fd), 76, $this->eol);
                if ($fh) {
                    fwrite($fh, $buffer);
                } else {
                    $data .= $buffer;
                }
            }
            break;

        case 'base64':
            while (!feof($fd)) {
                // Should read in a multiple of 57 bytes so that
                // the output is 76 bytes per line. Don't use big chunks
                // because base64 encoding is memory expensive
                $buffer = fread($fd, 57 * 9198); // ca. 0.5 MB
                $buffer = base64_encode($buffer);
                $buffer = chunk_split($buffer, 76, $this->eol);
                if (feof($fd)) {
                    $buffer = rtrim($buffer);
                }

                if ($fh) {
                    fwrite($fh, $buffer);
                } else {
                    $data .= $buffer;
                }
            }
            break;

        case '8bit':
        case '7bit':
        default:
            while (!feof($fd)) {
                $buffer = fread($fd, 1048576); // 1 MB
                if ($fh) {
                    fwrite($fh, $buffer);
                } else {
                    $data .= $buffer;
                }
            }
        }

        fclose($fd);

        if (!$fh) {
            return $data;
        }
    }

    /**
     * Encodes data to quoted-printable standard.
     *
     * @param string $input    The data to encode
     * @param int    $line_max Optional max line length. Should
     *                         not be more than 76 chars
     * @param string $eol      End-of-line sequence. Default: "\r\n"
     *
     * @return string Encoded data
     */
    public static function quotedPrintableEncode($input , $line_max = 76, $eol = "\r\n")
    {
        /*
        // imap_8bit() is extremely fast, but doesn't handle properly some characters
        if (function_exists('imap_8bit') && $line_max == 76) {
            $input = preg_replace('/\r?\n/', "\r\n", $input);
            $input = imap_8bit($input);
            if ($eol != "\r\n") {
                $input = str_replace("\r\n", $eol, $input);
            }
            return $input;
        }
        */
        $lines  = preg_split("/\r?\n/", $input);
        $escape = '=';
        $output = '';

        foreach ($lines as $idx => $line) {
            $newline = '';
            $i = 0;

            while (isset($line[$i])) {
                $char = $line[$i];
                $dec  = ord($char);
                $i++;

                if (($dec == 32) && (!isset($line[$i]))) {
                    // convert space at eol only
                    $char = '=20';
                } elseif ($dec == 9 && isset($line[$i])) {
                    ; // Do nothing if a TAB is not on eol
                } elseif (($dec == 61) || ($dec < 32) || ($dec > 126)) {
                    // Escape unprintable chars
                    $char = $escape . sprintf('%02X', $dec);
                } elseif (($dec == 46) && (($newline == '')
                    || ((strlen($newline) + strlen(".=")) > $line_max
                    && isset($line[$i])))
                ) {
                    // Bug #9722: convert full-stop at bol,
                    // some Windows servers need this, won't break anything (cipri)
                    // Bug #11731: full-stop at bol also needs to be encoded
                    // if this line would push us over the line_max limit.
                    $char = '=2E';
                }

                // EOL is not counted
                if ((strlen($newline) + strlen($char) == $line_max)
                    && !isset($line[$i])
                ) {
                    ; // no soft break is needed if we're the last char
                } elseif ((strlen($newline) + strlen($char)) >= $line_max) {
                    // soft line break; " =\r\n" is okay
                    $output  .= $newline . $escape . $eol;
                    $newline  = '';
                }

                $newline .= $char;
            } // end of for

            $output .= $newline . $eol;
            unset($lines[$idx]);
        }

        // Don't want last crlf
        $output = substr($output, 0, -1 * strlen($eol));

        return $output;
    }

    /**
     * Encodes the parameter of a header.
     *
     * @param string $name      The name of the header-parameter
     * @param string $value     The value of the paramter
     * @param string $charset   The characterset of $value
     * @param string $language  The language used in $value
     * @param string $encoding  Parameter encoding. If not set, parameter value
     *                          is encoded according to RFC2231
     * @param int    $maxLength The maximum length of a line. Defauls to 75
     *
     * @return string
     */
    protected function buildHeaderParam($name, $value, $charset = null,
        $language = null, $encoding = null, $maxLength = 75
    ) {
        // RFC 2045:
        // value needs encoding if contains non-ASCII chars or is longer than 78 chars
        if (!preg_match('#[^\x20-\x7E]#', $value)) {
            $token_regexp = '#([^\x21\x23-\x27\x2A\x2B\x2D'
                . '\x2E\x30-\x39\x41-\x5A\x5E-\x7E])#';
            if (!preg_match($token_regexp, $value)) {
                // token
                if (strlen($name) + strlen($value) + 3 <= $maxLength) {
                    return " {$name}={$value}";
                }
            } else {
                // quoted-string
                $quoted = addcslashes($value, '\\"');
                if (strlen($name) + strlen($quoted) + 5 <= $maxLength) {
                    return " {$name}=\"{$quoted}\"";
                }
            }
        }

        // RFC2047: use quoted-printable/base64 encoding
        if ($encoding == 'quoted-printable' || $encoding == 'base64') {
            return $this->buildRFC2047Param($name, $value, $charset, $encoding);
        }

        // RFC2231:
        $encValue = preg_replace_callback(
            '/([^\x21\x23\x24\x26\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E])/',
            array($this, 'encodeReplaceCallback'), $value
        );
        $value = "$charset'$language'$encValue";

        $header = " {$name}*={$value}";
        if (strlen($header) <= $maxLength) {
            return $header;
        }

        $preLength = strlen(" {$name}*0*=");
        $maxLength = max(16, $maxLength - $preLength - 3);
        $maxLengthReg = "|(.{0,$maxLength}[^\%][^\%])|";

        $headers = array();
        $headCount = 0;
        while ($value) {
            $matches = array();
            $found = preg_match($maxLengthReg, $value, $matches);
            if ($found) {
                $headers[] = " {$name}*{$headCount}*={$matches[0]}";
                $value = substr($value, strlen($matches[0]));
            } else {
                $headers[] = " {$name}*{$headCount}*={$value}";
                $value = '';
            }
            $headCount++;
        }

        $headers = implode(';' . $this->eol, $headers);
        return $headers;
    }

    /**
     * Encodes header parameter as per RFC2047 if needed
     *
     * @param string $name      The parameter name
     * @param string $value     The parameter value
     * @param string $charset   The parameter charset
     * @param string $encoding  Encoding type (quoted-printable or base64)
     * @param int    $maxLength Encoded parameter max length. Default: 76
     *
     * @return string Parameter line
     */
    protected function buildRFC2047Param($name, $value, $charset,
        $encoding = 'quoted-printable', $maxLength = 76
    ) {
        // WARNING: RFC 2047 says: "An 'encoded-word' MUST NOT be used in
        // parameter of a MIME Content-Type or Content-Disposition field",
        // but... it's supported by many clients/servers
        $quoted = '';

        if ($encoding == 'base64') {
            $value = base64_encode($value);
            $prefix = '=?' . $charset . '?B?';
            $suffix = '?=';

            // 2 x SPACE, 2 x '"', '=', ';'
            $add_len = strlen($prefix . $suffix) + strlen($name) + 6;
            $len = $add_len + strlen($value);

            while ($len > $maxLength) { 
                // We can cut base64-encoded string every 4 characters
                $real_len = floor(($maxLength - $add_len) / 4) * 4;
                $_quote = substr($value, 0, $real_len);
                $value = substr($value, $real_len);

                $quoted .= $prefix . $_quote . $suffix . $this->eol . ' ';
                $add_len = strlen($prefix . $suffix) + 4; // 2 x SPACE, '"', ';'
                $len = strlen($value) + $add_len;
            }
            $quoted .= $prefix . $value . $suffix;

        } else {
            // quoted-printable
            $value = $this->encodeQP($value);
            $prefix = '=?' . $charset . '?Q?';
            $suffix = '?=';

            // 2 x SPACE, 2 x '"', '=', ';'
            $add_len = strlen($prefix . $suffix) + strlen($name) + 6;
            $len = $add_len + strlen($value);

            while ($len > $maxLength) {
                $length = $maxLength - $add_len;
                // don't break any encoded letters
                if (preg_match("/^(.{0,$length}[^\=][^\=])/", $value, $matches)) {
                    $_quote = $matches[1];
                }

                $quoted .= $prefix . $_quote . $suffix . $this->eol . ' ';
                $value = substr($value, strlen($_quote));
                $add_len = strlen($prefix . $suffix) + 4; // 2 x SPACE, '"', ';'
                $len = strlen($value) + $add_len;
            }

            $quoted .= $prefix . $value . $suffix;
        }

        return " {$name}=\"{$quoted}\"";
    }

    /**
     * Return charset for mbstring functions.
     * Replace ISO-2022-JP with ISO-2022-JP-MS to convert Windows dependent
     * characters.
     *
     * @param string $charset A original charset
     *
     * @return string A charset for mbstring
     * @since  1.10.8
     */
    protected static function mbstringCharset($charset)
    {
        $mb_charset = $charset;

        if ($charset == 'ISO-2022-JP') {
            $mb_charset = 'ISO-2022-JP-MS';
        }

        return $mb_charset;
    }

    /**
     * Encodes a header as per RFC2047
     *
     * @param string $name     The header name
     * @param string $value    The header data to encode
     * @param string $charset  Character set name
     * @param string $encoding Encoding name (base64 or quoted-printable)
     * @param string $eol      End-of-line sequence. Default: "\r\n"
     *
     * @return string Encoded header data (without a name)
     * @since  1.6.1
     */
    public static function encodeHeader($name, $value, $charset = 'ISO-8859-1',
        $encoding = 'quoted-printable', $eol = "\r\n"
    ) {
        // Structured headers
        $comma_headers = array(
            'from', 'to', 'cc', 'bcc', 'sender', 'reply-to',
            'resent-from', 'resent-to', 'resent-cc', 'resent-bcc',
            'resent-sender', 'resent-reply-to',
            'mail-reply-to', 'mail-followup-to',
            'return-receipt-to', 'disposition-notification-to',
        );
        $other_headers = array(
            'references', 'in-reply-to', 'message-id', 'resent-message-id',
        );

        $name = strtolower($name);

        if (in_array($name, $comma_headers)) {
            $separator = ',';
        } else if (in_array($name, $other_headers)) {
            $separator = ' ';
        }

        if (!$charset) {
            $charset = 'ISO-8859-1';
        }

        // exploding quoted strings as well as some regexes below do not
        // work properly with some charset e.g. ISO-2022-JP, we'll use UTF-8
        $mb = $charset != 'UTF-8' && function_exists('mb_convert_encoding');
        $mb_charset = Mail_mimePart::mbstringCharset($charset);

        // Structured header (make sure addr-spec inside is not encoded)
        if (!empty($separator)) {
            // Simple e-mail address regexp
            $email_regexp = '([^\s<]+|("[^\r\n"]+"))@[^\s"]+';

            if ($mb) {
                $value = mb_convert_encoding($value, 'UTF-8', $mb_charset);
            }

            $parts = Mail_mimePart::explodeQuotedString("[\t$separator]", $value);
            $value = '';

            foreach ($parts as $part) {
                $part = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $part);
                $part = trim($part);

                if (!$part) {
                    continue;
                }
                if ($value) {
                    $value .= $separator == ',' ? $separator . ' ' : ' ';
                } else {
                    $value = $name . ': ';
                }

                // let's find phrase (name) and/or addr-spec
                if (preg_match('/^<' . $email_regexp . '>$/', $part)) {
                    $value .= $part;
                } else if (preg_match('/^' . $email_regexp . '$/', $part)) {
                    // address without brackets and without name
                    $value .= $part;
                } else if (preg_match('/<*' . $email_regexp . '>*$/', $part, $matches)) {
                    // address with name (handle name)
                    $address = $matches[0];
                    $word    = str_replace($address, '', $part);
                    $word    = trim($word);

                    // check if phrase requires quoting
                    if ($word) {
                        // non-ASCII: require encoding
                        if (preg_match('#([^\s\x21-\x7E]){1}#', $word)) {
                            if ($word[0] == '"' && $word[strlen($word)-1] == '"') {
                                // de-quote quoted-string, encoding changes
                                // string to atom
                                $word = substr($word, 1, -1);
                                $word = preg_replace('/\\\\([\\\\"])/', '$1', $word);
                            }
                            if ($mb) {
                                $word = mb_convert_encoding($word, $mb_charset, 'UTF-8');
                            }

                            // find length of last line
                            if (($pos = strrpos($value, $eol)) !== false) {
                                $last_len = strlen($value) - $pos;
                            } else {
                                $last_len = strlen($value);
                            }

                            $word = Mail_mimePart::encodeHeaderValue(
                                $word, $charset, $encoding, $last_len, $eol
                            );
                        } else if (($word[0] != '"' || $word[strlen($word)-1] != '"')
                            && preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $word)
                        ) {
                            // ASCII: quote string if needed
                            $word = '"'.addcslashes($word, '\\"').'"';
                        }
                    }

                    $value .= $word.' '.$address;
                } else {
                    if ($mb) {
                        $part = mb_convert_encoding($part, $mb_charset, 'UTF-8');
                    }
                    // addr-spec not found, don't encode (?)
                    $value .= $part;
                }

                // RFC2822 recommends 78 characters limit, use 76 from RFC2047
                $value = wordwrap($value, 76, $eol . ' ');
            }

            // remove header name prefix (there could be EOL too)
            $value = preg_replace(
                '/^'.$name.':('.preg_quote($eol, '/').')* /', '', $value
            );
        } else {
            // Unstructured header
            // non-ASCII: require encoding
            if (preg_match('#([^\s\x21-\x7E]){1}#', $value)) {
                if ($value[0] == '"' && $value[strlen($value)-1] == '"') {
                    if ($mb) {
                        $value = mb_convert_encoding($value, 'UTF-8', $mb_charset);
                    }
                    // de-quote quoted-string, encoding changes
                    // string to atom
                    $value = substr($value, 1, -1);
                    $value = preg_replace('/\\\\([\\\\"])/', '$1', $value);
                    if ($mb) {
                        $value = mb_convert_encoding($value, $mb_charset, 'UTF-8');
                    }
                }

                $value = Mail_mimePart::encodeHeaderValue(
                    $value, $charset, $encoding, strlen($name) + 2, $eol
                );
            } else if (strlen($name.': '.$value) > 78) {
                // ASCII: check if header line isn't too long and use folding
                $value = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $value);
                $tmp   = wordwrap($name . ': ' . $value, 78, $eol . ' ');
                $value = preg_replace('/^' . $name . ':\s*/', '', $tmp);
                // hard limit 998 (RFC2822)
                $value = wordwrap($value, 998, $eol . ' ', true);
            }
        }

        return $value;
    }

    /**
     * Explode quoted string
     *
     * @param string $delimiter Delimiter expression string for preg_match()
     * @param string $string    Input string
     *
     * @return array String tokens array
     */
    protected static function explodeQuotedString($delimiter, $string)
    {
        $result = array();
        $strlen = strlen($string);
        $quoted_string = '"(?:[^"\\\\]|\\\\.)*"';

        for ($p=$i=0; $i < $strlen; $i++) {
            if ($string[$i] === '"') {
                $r = preg_match("/$quoted_string/", $string, $matches, 0, $i);
                if (!$r || empty($matches[0])) {
                    break;
                }
                $i += strlen($matches[0]) - 1;
            } else if (preg_match("/$delimiter/", $string[$i])) {
                $result[] = substr($string, $p, $i - $p);
                $p = $i + 1;
            }
        }
        $result[] = substr($string, $p);
        return $result;
    }

    /**
     * Encodes a header value as per RFC2047
     *
     * @param string $value      The header data to encode
     * @param string $charset    Character set name
     * @param string $encoding   Encoding name (base64 or quoted-printable)
     * @param int    $prefix_len Prefix length. Default: 0
     * @param string $eol        End-of-line sequence. Default: "\r\n"
     *
     * @return string Encoded header data
     * @since  1.6.1
     */
    public static function encodeHeaderValue($value, $charset, $encoding, $prefix_len = 0, $eol = "\r\n")
    {
        // #17311: Use multibyte aware method (requires mbstring extension)
        if ($result = Mail_mimePart::encodeMB($value, $charset, $encoding, $prefix_len, $eol)) {
            return $result;
        }

        // Generate the header using the specified params and dynamicly
        // determine the maximum length of such strings.
        // 75 is the value specified in the RFC.
        $encoding = $encoding == 'base64' ? 'B' : 'Q';
        $prefix = '=?' . $charset . '?' . $encoding .'?';
        $suffix = '?=';
        $maxLength = 75 - strlen($prefix . $suffix);
        $maxLength1stLine = $maxLength - $prefix_len;

        if ($encoding == 'B') {
            // Base64 encode the entire string
            $value = base64_encode($value);

            // We can cut base64 every 4 characters, so the real max
            // we can get must be rounded down.
            $maxLength = $maxLength - ($maxLength % 4);
            $maxLength1stLine = $maxLength1stLine - ($maxLength1stLine % 4);

            $cutpoint = $maxLength1stLine;
            $output = '';

            while ($value) {
                // Split translated string at every $maxLength
                $part = substr($value, 0, $cutpoint);
                $value = substr($value, $cutpoint);
                $cutpoint = $maxLength;
                // RFC 2047 specifies that any split header should
                // be separated by a CRLF SPACE.
                if ($output) {
                    $output .= $eol . ' ';
                }
                $output .= $prefix . $part . $suffix;
            }
            $value = $output;
        } else {
            // quoted-printable encoding has been selected
            $value = Mail_mimePart::encodeQP($value);

            // This regexp will break QP-encoded text at every $maxLength
            // but will not break any encoded letters.
            $reg1st = "|(.{0,$maxLength1stLine}[^\=][^\=])|";
            $reg2nd = "|(.{0,$maxLength}[^\=][^\=])|";

            if (strlen($value) > $maxLength1stLine) {
                // Begin with the regexp for the first line.
                $reg = $reg1st;
                $output = '';
                while ($value) {
                    // Split translated string at every $maxLength
                    // But make sure not to break any translated chars.
                    $found = preg_match($reg, $value, $matches);

                    // After this first line, we need to use a different
                    // regexp for the first line.
                    $reg = $reg2nd;

                    // Save the found part and encapsulate it in the
                    // prefix & suffix. Then remove the part from the
                    // $value_out variable.
                    if ($found) {
                        $part = $matches[0];
                        $len = strlen($matches[0]);
                        $value = substr($value, $len);
                    } else {
                        $part = $value;
                        $value = '';
                    }

                    // RFC 2047 specifies that any split header should
                    // be separated by a CRLF SPACE
                    if ($output) {
                        $output .= $eol . ' ';
                    }
                    $output .= $prefix . $part . $suffix;
                }
                $value = $output;
            } else {
                $value = $prefix . $value . $suffix;
            }
        }

        return $value;
    }

    /**
     * Encodes the given string using quoted-printable
     *
     * @param string $str String to encode
     *
     * @return string Encoded string
     * @since  1.6.0
     */
    public static function encodeQP($str)
    {
        // Bug #17226 RFC 2047 restricts some characters
        // if the word is inside a phrase, permitted chars are only:
        // ASCII letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"

        // "=",  "_",  "?" must be encoded
        $regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/';
        $str = preg_replace_callback(
            $regexp, array('Mail_mimePart', 'qpReplaceCallback'), $str
        );

        return str_replace(' ', '_', $str);
    }

    /**
     * Encodes the given string using base64 or quoted-printable.
     * This method makes sure that encoded-word represents an integral
     * number of characters as per RFC2047.
     *
     * @param string $str        String to encode
     * @param string $charset    Character set name
     * @param string $encoding   Encoding name (base64 or quoted-printable)
     * @param int    $prefix_len Prefix length. Default: 0
     * @param string $eol        End-of-line sequence. Default: "\r\n"
     *
     * @return string Encoded string
     * @since  1.8.0
     */
    public static function encodeMB($str, $charset, $encoding, $prefix_len=0, $eol="\r\n")
    {
        if (!function_exists('mb_substr') || !function_exists('mb_strlen')) {
            return;
        }

        $encoding = $encoding == 'base64' ? 'B' : 'Q';
        // 75 is the value specified in the RFC
        $prefix = '=?' . $charset . '?'.$encoding.'?';
        $suffix = '?=';
        $maxLength = 75 - strlen($prefix . $suffix);
        $mb_charset = Mail_mimePart::mbstringCharset($charset);

        // A multi-octet character may not be split across adjacent encoded-words
        // So, we'll loop over each character
        // mb_stlen() with wrong charset will generate a warning here and return null
        $length      = mb_strlen($str, $mb_charset);
        $result      = '';
        $line_length = $prefix_len;

        if ($encoding == 'B') {
            // base64
            $start = 0;
            $prev  = '';

            for ($i=1; $i<=$length; $i++) {
                // See #17311
                $chunk = mb_substr($str, $start, $i-$start, $mb_charset);
                $chunk = base64_encode($chunk);
                $chunk_len = strlen($chunk);

                if ($line_length + $chunk_len == $maxLength || $i == $length) {
                    if ($result) {
                        $result .= "\n";
                    }
                    $result .= $chunk;
                    $line_length = 0;
                    $start = $i;
                } else if ($line_length + $chunk_len > $maxLength) {
                    if ($result) {
                        $result .= "\n";
                    }
                    if ($prev) {
                        $result .= $prev;
                    }
                    $line_length = 0;
                    $start = $i - 1;
                } else {
                    $prev = $chunk;
                }
            }
        } else {
            // quoted-printable
            // see encodeQP()
            $regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/';

            for ($i=0; $i<=$length; $i++) {
                $char = mb_substr($str, $i, 1, $mb_charset);
                // RFC recommends underline (instead of =20) in place of the space
                // that's one of the reasons why we're not using iconv_mime_encode()
                if ($char == ' ') {
                    $char = '_';
                    $char_len = 1;
                } else {
                    $char = preg_replace_callback(
                        $regexp, array('Mail_mimePart', 'qpReplaceCallback'), $char
                    );
                    $char_len = strlen($char);
                }

                if ($line_length + $char_len > $maxLength) {
                    if ($result) {
                        $result .= "\n";
                    }
                    $line_length = 0;
                }

                $result      .= $char;
                $line_length += $char_len;
            }
        }

        if ($result) {
            $result = $prefix
                .str_replace("\n", $suffix.$eol.' '.$prefix, $result).$suffix;
        }

        return $result;
    }

    /**
     * Callback function to replace extended characters (\x80-xFF) with their
     * ASCII values (RFC2047: quoted-printable)
     *
     * @param array $matches Preg_replace's matches array
     *
     * @return string Encoded character string
     */
    protected static function qpReplaceCallback($matches)
    {
        return sprintf('=%02X', ord($matches[1]));
    }

    /**
     * Callback function to replace extended characters (\x80-xFF) with their
     * ASCII values (RFC2231)
     *
     * @param array $matches Preg_replace's matches array
     *
     * @return string Encoded character string
     */
    protected static function encodeReplaceCallback($matches)
    {
        return sprintf('%%%02X', ord($matches[1]));
    }

    /**
     * PEAR::raiseError implementation
     *
     * @param string $message A text error message
     *
     * @return PEAR_Error Instance of PEAR_Error
     */
    public static function raiseError($message)
    {
        // PEAR::raiseError() is not PHP 5.4 compatible
        return new PEAR_Error($message);
    }
}
PK\1[B��shhmock.phpnu�[���<?php
/**
 * Mock implementation
 *
 * PHP version 5
 *
 * LICENSE:
 *
 * Copyright (c) 2010-2017, Chuck Hagenbuch
 * 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      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/
 */

/**
 * Mock implementation of the PEAR Mail:: interface for testing.
 * @access public
 * @package Mail
 * @version $Revision$
 */
class Mail_mock extends Mail {

    /**
     * Array of messages that have been sent with the mock.
     *
     * @var array
     */
    public $sentMessages = array();

    /**
     * Callback before sending mail.
     *
     * @var callback
     */
    protected $_preSendCallback;

    /**
     * Callback after sending mai.
     *
     * @var callback
     */
    protected $_postSendCallback;

    /**
     * Constructor.
     *
     * Instantiates a new Mail_mock:: object based on the parameters
     * passed in. It looks for the following parameters, both optional:
     *     preSendCallback   Called before an email would be sent.
     *     postSendCallback  Called after an email would have been sent.
     *
     * @param array Hash containing any parameters.
     */
    public function __construct($params)
    {
        if (isset($params['preSendCallback']) &&
            is_callable($params['preSendCallback'])) {
            $this->_preSendCallback = $params['preSendCallback'];
        }

        if (isset($params['postSendCallback']) &&
            is_callable($params['postSendCallback'])) {
            $this->_postSendCallback = $params['postSendCallback'];
        }
    }

    /**
     * Implements Mail_mock::send() function. Silently discards all
     * mail.
     *
     * @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, $body)
    {
        if ($this->_preSendCallback) {
            call_user_func_array($this->_preSendCallback,
                                 array(&$this, $recipients, $headers, $body));
        }

        $entry = array('recipients' => $recipients, 'headers' => $headers, 'body' => $body);
        $this->sentMessages[] = $entry;

        if ($this->_postSendCallback) {
            call_user_func_array($this->_postSendCallback,
                                 array(&$this, $recipients, $headers, $body));
        }

        return true;
    }

}
PK\1[@iE�\\mail.phpnu�[���<?php
/**
 * internal PHP-mail() implementation of the PEAR Mail:: interface.
 *
 * PHP version 5
 *
 * LICENSE:
 *
 * Copyright (c) 2010-2017, Chuck Hagenbuch
 * 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      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/
 */

/**
 * internal PHP-mail() implementation of the PEAR Mail:: interface.
 * @package Mail
 * @version $Revision$
 */
class Mail_mail extends Mail {

    /**
     * Any arguments to pass to the mail() function.
     * @var string
     */
    var $_params = '';

    /**
     * Constructor.
     *
     * Instantiates a new Mail_mail:: object based on the parameters
     * passed in.
     *
     * @param array $params Extra arguments for the mail() function.
     */
    public function __construct($params = null)
    {
        // The other mail implementations accept parameters as arrays.
        // In the interest of being consistent, explode an array into
        // a string of parameter arguments.
        if (is_array($params)) {
            $this->_params = join(' ', $params);
        } else {
            $this->_params = $params;
        }

        /* Because the mail() function may pass headers as command
         * line arguments, 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_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 $body The full text of the message body, including any
     *               Mime parts, etc.
     *
     * @return mixed Returns true on success, or a PEAR_Error
     *               containing a descriptive error message on
     *               failure.
     */
    public function send($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;
        }

        // 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']);
        }

        // Also remove the To: header.  The mail() function will add its own
        // To: header based on the contents of $recipients.
        unset($headers['To']);

        // Flatten the headers out.
        $headerElements = $this->prepareHeaders($headers);
        if (is_a($headerElements, 'PEAR_Error')) {
            return $headerElements;
        }
        list(, $text_headers) = $headerElements;

        // We only use mail()'s optional fifth parameter if the additional
        // parameters have been provided and we're not running in safe mode.
        if (empty($this->_params) || ini_get('safe_mode')) {
            $result = mail($recipients, $subject, $body, $text_headers);
        } else {
            $result = mail($recipients, $subject, $body, $text_headers,
                           $this->_params);
        }

        // If the mail() function returned failure, we need to create a
        // PEAR_Error object and return it instead of the boolean result.
        if ($result === false) {
            $result = PEAR::raiseError('mail() returned failure');
        }

        return $result;
    }

}
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