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<?php/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */// +-----------------------------------------------------------------------+// | Copyright (c) 2002-2003 Richard Heyes |// | Copyright (c) 2003-2005 The PHP Group |// | All rights reserved. |// | |// | Redistribution and use in source and binary forms, with or without |// | modification, are permitted provided that the following conditions |// | are met: |// | |// | o Redistributions of source code must retain the above copyright |// | notice, this list of conditions and the following disclaimer. |// | o Redistributions in binary form must reproduce the above copyright |// | notice, this list of conditions and the following disclaimer in the |// | documentation and/or other materials provided with the distribution.|// | o The names of the authors may not be used to endorse or promote |// | products derived from this software without specific prior written |// | permission. |// | |// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |// | |// +-----------------------------------------------------------------------+// | Author: Richard Heyes <richard@phpguru.org> |// +-----------------------------------------------------------------------+require_once 'PEAR.php';/*** +----------------------------- 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. |* +----------------------------------------------------------------------+** Mime Decoding class** This class will parse a raw mime email and return* the structure. Returned structure is similar to* that returned by imap_fetchstructure().** USAGE: (assume $input is your raw email)** $decode = new Mail_mimeDecode($input, "\r\n");* $structure = $decode->decode();* print_r($structure);** Or statically:** $params['input'] = $input;* $structure = Mail_mimeDecode::decode($params);* print_r($structure);** TODO:* o Implement multipart/appledouble* o UTF8: ???> 4. We have also found a solution for decoding the UTF-8> headers. Therefore I made the following function:>> function decode_utf8($txt) {> $trans=array("Å‘"=>"õ","ű"=>"û","Å"=>"Õ","Å°"=>"Û");> $txt=strtr($txt,$trans);> return(utf8_decode($txt));> }>> And I have inserted the following line to the class:>> if (strtolower($charset)=="utf-8") $text=decode_utf8($text);>> ... before the following one in the "_decodeHeader" function:>> $input = str_replace($encoded, $text, $input);>> This way from now on it can easily decode the UTF-8 headers too.** @author Richard Heyes <richard@phpguru.org>* @version $Revision: 1.1 $* @package Mail*/class Mail_mimeDecode extends PEAR{/*** The raw email to decode* @var string*/var $_input;/*** The header part of the input* @var string*/var $_header;/*** The body part of the input* @var string*/var $_body;/*** If an error occurs, this is used to store the message* @var string*/var $_error;/*** Flag to determine whether to include bodies in the* returned object.* @var boolean*/var $_include_bodies;/*** Flag to determine whether to decode bodies* @var boolean*/var $_decode_bodies;/*** Flag to determine whether to decode headers* @var boolean*/var $_decode_headers;/*** Constructor.** Sets up the object, initialise the variables, and splits and* stores the header and body of the input.** @param string The input to decode* @access public*/function Mail_mimeDecode($input){list($header, $body) = $this->_splitBodyHeader($input);$this->_input = $input;$this->_header = $header;$this->_body = $body;$this->_decode_bodies = false;$this->_include_bodies = true;}/*** Begins the decoding process. If called statically* it will create an object and call the decode() method* of it.** @param array An array of various parameters that determine* various things:* include_bodies - Whether to include the body in the returned* object.* decode_bodies - Whether to decode the bodies* of the parts. (Transfer encoding)* decode_headers - Whether to decode headers* input - If called statically, this will be treated* as the input* @return object Decoded results* @access public*/function decode($params = null){// determine if this method has been called statically$isStatic = !(isset($this) && get_class($this) == __CLASS__);// Have we been called statically?// If so, create an object and pass details to that.if ($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;$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 $value) {if (isset($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'])] = $value['value'];}}reset($headers);while (list($key, $value) = each($headers)) {$headers[$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'])) {while (list($p_name, $p_value) = each($content_type['other'])) {$return->ctype_parameters[$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'])) {while (list($p_name, $p_value) = each($content_disposition['other'])) {$return->d_parameters[$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) : $body) : null;break;case 'multipart/parallel':case 'multipart/report': // RFC1892case 'multipart/signed': // PGPcase 'multipart/digest':case 'multipart/alternative':case 'multipart/related':case 'multipart/mixed':if(!isset($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[] = $part;}break;case 'message/rfc822':$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], $match[2]);}$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", $input);$input = preg_replace("/\r\n(\t| )+/", ' ', $input);$headers = explode("\r\n", trim($input));foreach ($headers as $value) {$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' => $this->_decode_headers ? $this->_decodeHeader($hdr_value) : $hdr_value);}} else {$return = array();}return $return;}/*** Function to parse a header value,* extract first part, and any secondary* parts (after ;) This function is not as* robust as it could be. Eg. header comments* in the wrong place will probably break it.** @param string Header value to parse* @return array Contains parsed result* @access private*/function _parseHeaderValue($input){if (($pos = strpos($input, ';')) !== false) {$return['value'] = trim(substr($input, 0, $pos));$input = trim(substr($input, $pos+1));if (strlen($input) > 0) {// This splits on a semi-colon, if there's no preceeding backslash// Now works with quoted values; had to glue the \; breaks in PHP// the regex is already bordering on incomprehensible$splitRegex = '/([^;\'"]*[\'"]([^\'"]*([^\'"]*)*)[\'"][^;\'"]*|([^;]+))(;|$)/';preg_match_all($splitRegex, $input, $matches);$parameters = array();for ($i=0; $i<count($matches[0]); $i++) {$param = $matches[0][$i];while (substr($param, -2) == '\;') {$param .= $matches[0][++$i];}$parameters[] = $param;}for ($i = 0; $i < count($parameters); $i++) {$param_name = trim(substr($parameters[$i], 0, $pos = strpos($parameters[$i], '=')), "'\";\t\\ ");$param_value = trim(str_replace('\;', ';', substr($parameters[$i], $pos + 1)), "'\";\t\\ ");if ($param_value[0] == '"') {$param_value = substr($param_value, 1, -1);}$return['other'][$param_name] = $param_value;$return['other'][strtolower($param_name)] = $param_value;}}} else {$return['value'] = trim($input);}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, $boundary){$parts = array();$bs_possible = substr($boundary, 2, -2);$bs_check = '\"' . $bs_possible . '\"';if ($boundary == $bs_check) {$boundary = $bs_possible;}$tmp = explode('--' . $boundary, $input);for ($i = 1; $i < count($tmp) - 1; $i++) {$parts[] = $tmp[$i];}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){// 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)), $text);break;}$input = str_replace($encoded, $text, $input);}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/", '', $input);// Replace encoded characters$input = preg_replace('/=([a-f0-9]{2})/ie', "chr(hexdec('\\1'))", $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 sectionspreg_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 => $hdr_value) {// Multiple headers with this nameif (is_array($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('-', ' ', $hdr_name)));// Sort out any parametersif (!empty($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?>