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PHP class for parsing HTTP multipart/form-data request body
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| <?php | |
| class HttpMultipartParser | |
| { | |
| public function parse_multipart($stream, $boundary = null) | |
| { | |
| $return = array('variables' => array(), 'files' => array()); | |
| $partInfo = null; | |
| while(($lineN = fgets($stream)) !== false) | |
| { | |
| if(strpos($lineN, '--') === 0) | |
| { | |
| if(!isSet($boundary) || $boundary == null) | |
| { | |
| $boundary = rtrim($lineN); | |
| } | |
| continue; | |
| } | |
| $line = rtrim($lineN); | |
| if($line == '') | |
| { | |
| if(!empty($partInfo['Content-Disposition']['filename'])) | |
| { | |
| $this->parse_file($stream, $boundary, $partInfo, $return['files']); | |
| } | |
| elseif($partInfo != null) | |
| { | |
| $this->parse_variable($stream, $boundary, $partInfo['Content-Disposition']['name'], $return['variables']); | |
| } | |
| $partInfo = null; | |
| continue; | |
| } | |
| $delim = strpos($line, ':'); | |
| $headerKey = substr($line, 0, $delim); | |
| $headerVal = ltrim($line, $delim + 1); | |
| $partInfo[$headerKey] = $this->parse_header_value($headerVal, $headerKey); | |
| } | |
| fclose($stream); | |
| return $return; | |
| } | |
| public function parse_header_value($line, $header = '') | |
| { | |
| $retval = array(); | |
| $regex = '/(^|;)\s*(?P<name>[^=:,;\s"]*):?(=("(?P<quotedValue>[^"]*(\\.[^"]*)*)")|(\s*(?P<value>[^=,;\s"]*)))?/mx'; | |
| $matches = null; | |
| preg_match_all($regex, $line, $matches, PREG_SET_ORDER); | |
| for($i = 0; $i < count($matches); $i++) | |
| { | |
| $match = $matches[$i]; | |
| $name = $match['name']; | |
| $quotedValue = $match['quotedValue']; | |
| if(empty($quotedValue)) | |
| { | |
| $value = $match['value']; | |
| } | |
| else { | |
| $value = stripcslashes($quotedValue); | |
| } | |
| if($name == $header && $i == 0) | |
| { | |
| $name = 'value'; | |
| } | |
| $retval[$name] = $value; | |
| } | |
| return $retval; | |
| } | |
| public function parse_variable($stream, $boundary, $name, &$array) | |
| { | |
| $fullValue = ''; | |
| $lastLine = null; | |
| while(($lineN = fgets($stream)) !== false && strpos($lineN, $boundary) !== 0) | |
| { | |
| if($lastLine != null) | |
| { | |
| $fullValue .= $lastLine; | |
| } | |
| $lastLine = $lineN; | |
| } | |
| if($lastLine != null) | |
| { | |
| $fullValue .= rtrim($lastLine, '\r\n'); | |
| } | |
| $array[$name] = $fullValue; | |
| } | |
| public function parse_file($stream, $boundary, $info, &$array) | |
| { | |
| $tempdir = sys_get_temp_dir(); | |
| $name = $info['Content-Disposition']['name']; | |
| $fileStruct['name'] = $info['Content-Disposition']['filename']; | |
| $fileStruct['type'] = $info['Content-Type']['value']; | |
| $array[$name] = &$fileStruct; | |
| if(empty($tempdir)) | |
| { | |
| $fileStruct['error'] = UPLOAD_ERR_NO_TMP_DIR; | |
| return; | |
| } | |
| $tempname = tempnam($tempdir, 'php_upl'); | |
| $outFP = fopen($tempname, 'wb'); | |
| if($outFP === false) | |
| { | |
| $fileStruct['error'] = UPLOAD_ERR_CANT_WRITE; | |
| return; | |
| } | |
| $lastLine = null; | |
| while(($lineN = fgets($stream, 4096)) !== false) | |
| { | |
| if($lastLine != null) | |
| { | |
| if(strpos($lineN, $boundary) === 0) break; | |
| if(fwrite($outFP, $lastLine) === false) | |
| { | |
| $fileStruct = UPLOAD_ERR_CANT_WRITE; | |
| return; | |
| } | |
| } | |
| $lastLine = $lineN; | |
| } | |
| if($lastLine != null) | |
| { | |
| if(fwrite($outFP, rtrim($lastLine, '\r\n')) === false) | |
| { | |
| $fileStruct['error'] = UPLOAD_ERR_CANT_WRITE; | |
| return; | |
| } | |
| } | |
| $fileStruct['error'] = UPLOAD_ERR_OK; | |
| $fileStruct['size'] = filesize($tempname); | |
| $fileStruct['tmp_name'] = $tempname; | |
| } | |
| } |
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Fixed double negative on line 30