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<?php |
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namespace PhpXmlRpc\Helper; |
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use PhpXmlRpc\PhpXmlRpc; |
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use PhpXmlRpc\Value; |
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/** |
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* Deals with parsing the XML. |
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*/ |
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class XMLParser |
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{ |
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const RETURN_XMLRPCVALS = 'xmlrpcvals'; |
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const RETURN_PHP = 'phpvals'; |
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const ACCEPT_REQUEST = 1; |
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const ACCEPT_RESPONSE = 2; |
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const ACCEPT_VALUE = 4; |
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const ACCEPT_FAULT = 8; |
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// Used to store state during parsing. |
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// Quick explanation of components: |
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// private: |
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// ac - used to accumulate values |
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// stack - array with genealogy of xml elements names used to validate nesting of xmlrpc elements |
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// valuestack - array used for parsing arrays and structs |
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// lv - used to indicate "looking for a value": implements the logic to allow values with no types to be strings |
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// public: |
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// isf - used to indicate an xml parsing fault (3), invalid xmlrpc fault (2) or xmlrpc response fault (1) |
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// isf_reason - used for storing xmlrpc response fault string |
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// method - used to store method name |
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// params - used to store parameters in method calls |
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// pt - used to store the type of each received parameter. Useful if parameters are automatically decoded to php values |
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// rt - 'methodcall', 'methodresponse', 'value' or 'fault' (the last one used only in EPI emulation mode) |
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public $_xh = array( |
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'ac' => '', |
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'stack' => array(), |
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'valuestack' => array(), |
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'isf' => 0, |
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'isf_reason' => '', |
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'method' => false, |
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'params' => array(), |
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'pt' => array(), |
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'rt' => '', |
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); |
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public $xmlrpc_valid_parents = array( |
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'VALUE' => array('MEMBER', 'DATA', 'PARAM', 'FAULT'), |
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'BOOLEAN' => array('VALUE'), |
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'I4' => array('VALUE'), |
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'I8' => array('VALUE'), |
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'EX:I8' => array('VALUE'), |
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'INT' => array('VALUE'), |
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'STRING' => array('VALUE'), |
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'DOUBLE' => array('VALUE'), |
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'DATETIME.ISO8601' => array('VALUE'), |
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'BASE64' => array('VALUE'), |
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'MEMBER' => array('STRUCT'), |
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'NAME' => array('MEMBER'), |
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'DATA' => array('ARRAY'), |
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'ARRAY' => array('VALUE'), |
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'STRUCT' => array('VALUE'), |
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'PARAM' => array('PARAMS'), |
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'METHODNAME' => array('METHODCALL'), |
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'PARAMS' => array('METHODCALL', 'METHODRESPONSE'), |
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'FAULT' => array('METHODRESPONSE'), |
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'NIL' => array('VALUE'), // only used when extension activated |
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'EX:NIL' => array('VALUE'), // only used when extension activated |
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); |
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/** @var array $parsing_options */ |
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protected $parsing_options = array(); |
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/** @var int $accept self::ACCEPT_REQUEST | self::ACCEPT_RESPONSE by default */ |
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protected $accept = 3; |
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/** @var int $maxChunkLength 4 MB by default. Any value below 10MB should be good */ |
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protected $maxChunkLength = 4194304; |
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/** |
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* @param array $options passed to the xml parser |
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*/ |
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609 |
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public function __construct(array $options = array()) |
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{ |
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609 |
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$this->parsing_options = $options; |
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609 |
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} |
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/** |
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* @param string $data |
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* @param string $returnType |
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* @param int $accept a bit-combination of self::ACCEPT_REQUEST, self::ACCEPT_RESPONSE, self::ACCEPT_VALUE |
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* @return string |
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*/ |
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609 |
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public function parse($data, $returnType = self::RETURN_XMLRPCVALS, $accept = 3) |
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{ |
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609 |
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$this->_xh = array( |
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'ac' => '', |
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'stack' => array(), |
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'valuestack' => array(), |
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'isf' => 0, |
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'isf_reason' => '', |
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'method' => false, // so we can check later if we got a methodname or not |
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'params' => array(), |
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'pt' => array(), |
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'rt' => '', |
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); |
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609 |
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$len = strlen($data); |
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// we test for empty documents here to save on resource allocation and simply the chunked-parsing loop below |
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609 |
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if ($len == 0) { |
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2 |
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$this->_xh['isf'] = 3; |
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2 |
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$this->_xh['isf_reason'] = 'XML error 5: empty document'; |
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2 |
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return; |
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} |
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607 |
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$parser = xml_parser_create(); |
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607 |
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foreach ($this->parsing_options as $key => $val) { |
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xml_parser_set_option($parser, $key, $val); |
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} |
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// always set this, in case someone tries to disable it via options... |
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607 |
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xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 1); |
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xml_set_object($parser, $this); |
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607 |
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if ($returnType == self::RETURN_PHP) { |
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xml_set_element_handler($parser, 'xmlrpc_se', 'xmlrpc_ee_fast'); |
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} else { |
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xml_set_element_handler($parser, 'xmlrpc_se', 'xmlrpc_ee'); |
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} |
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607 |
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xml_set_character_data_handler($parser, 'xmlrpc_cd'); |
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xml_set_default_handler($parser, 'xmlrpc_dh'); |
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$this->accept = $accept; |
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// @see ticket #70 - we have to parse big xml docks in chunks to avoid errors |
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607 |
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for ($offset = 0; $offset < $len; $offset += $this->maxChunkLength) { |
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$chunk = substr($data, $offset, $this->maxChunkLength); |
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// error handling: xml not well formed |
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if (!xml_parse($parser, $chunk, $offset + $this->maxChunkLength >= $len)) { |
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3 |
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$errCode = xml_get_error_code($parser); |
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3 |
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$errStr = sprintf('XML error %s: %s at line %d, column %d', $errCode, xml_error_string($errCode), |
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3 |
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xml_get_current_line_number($parser), xml_get_current_column_number($parser)); |
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3 |
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$this->_xh['isf'] = 3; |
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3 |
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$this->_xh['isf_reason'] = $errStr; |
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3 |
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break; |
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} |
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} |
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xml_parser_free($parser); |
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} |
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/** |
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* xml parser handler function for opening element tags. |
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* @param resource $parser |
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* @param string $name |
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* @param $attrs |
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* @param bool $acceptSingleVals DEPRECATED use the $accept parameter instead |
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*/ |
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607 |
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public function xmlrpc_se($parser, $name, $attrs, $acceptSingleVals = false) |
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{ |
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// if invalid xmlrpc already detected, skip all processing |
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607 |
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if ($this->_xh['isf'] < 2) { |
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// check for correct element nesting |
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607 |
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if (count($this->_xh['stack']) == 0) { |
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// top level element can only be of 2 types |
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/// @todo optimization creep: save this check into a bool variable, instead of using count() every time: |
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/// there is only a single top level element in xml anyway |
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// BC |
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607 |
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if ($acceptSingleVals === false) { |
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$accept = $this->accept; |
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} else { |
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$accept = self::ACCEPT_REQUEST | self::ACCEPT_RESPONSE | self::ACCEPT_VALUE; |
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} |
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if (($name == 'METHODCALL' && ($accept & self::ACCEPT_REQUEST)) || |
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($name == 'METHODRESPONSE' && ($accept & self::ACCEPT_RESPONSE)) || |
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3 |
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($name == 'VALUE' && ($accept & self::ACCEPT_VALUE)) || |
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($name == 'FAULT' && ($accept & self::ACCEPT_FAULT))) { |
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$this->_xh['rt'] = strtolower($name); |
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} else { |
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2 |
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$this->_xh['isf'] = 2; |
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2 |
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$this->_xh['isf_reason'] = 'missing top level xmlrpc element. Found: ' . $name; |
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185
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186
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601 |
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return; |
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} |
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} else { |
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// not top level element: see if parent is OK |
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607 |
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$parent = end($this->_xh['stack']); |
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607 |
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if (!array_key_exists($name, $this->xmlrpc_valid_parents) || !in_array($parent, $this->xmlrpc_valid_parents[$name])) { |
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2 |
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$this->_xh['isf'] = 2; |
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2 |
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$this->_xh['isf_reason'] = "xmlrpc element $name cannot be child of $parent"; |
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2 |
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return; |
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} |
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} |
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199
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607 |
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switch ($name) { |
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200
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// optimize for speed switch cases: most common cases first |
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201
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607 |
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case 'VALUE': |
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/// @todo we could check for 2 VALUE elements inside a MEMBER or PARAM element |
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605 |
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$this->_xh['vt'] = 'value'; // indicator: no value found yet |
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204
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605 |
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$this->_xh['ac'] = ''; |
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605 |
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$this->_xh['lv'] = 1; |
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605 |
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$this->_xh['php_class'] = null; |
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605 |
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break; |
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607 |
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case 'I8': |
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607 |
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case 'EX:I8': |
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1 |
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if (PHP_INT_SIZE === 4) { |
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211
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// INVALID ELEMENT: RAISE ISF so that it is later recognized!!! |
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212
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$this->_xh['isf'] = 2; |
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213
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$this->_xh['isf_reason'] = "Received i8 element but php is compiled in 32 bit mode"; |
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214
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215
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return; |
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216
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} |
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217
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// fall through voluntarily |
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218
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607 |
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case 'I4': |
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219
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607 |
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case 'INT': |
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220
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607 |
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case 'STRING': |
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221
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607 |
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case 'BOOLEAN': |
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222
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607 |
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case 'DOUBLE': |
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223
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607 |
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case 'DATETIME.ISO8601': |
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224
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607 |
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case 'BASE64': |
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225
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584 |
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if ($this->_xh['vt'] != 'value') { |
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226
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// two data elements inside a value: an error occurred! |
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227
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1 |
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$this->_xh['isf'] = 2; |
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228
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1 |
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$this->_xh['isf_reason'] = "$name element following a {$this->_xh['vt']} element inside a single value"; |
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229
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230
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1 |
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return; |
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231
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} |
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232
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584 |
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$this->_xh['ac'] = ''; // reset the accumulator |
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233
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584 |
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break; |
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234
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607 |
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case 'STRUCT': |
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235
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607 |
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case 'ARRAY': |
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236
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344 |
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if ($this->_xh['vt'] != 'value') { |
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237
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// two data elements inside a value: an error occurred! |
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238
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1 |
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$this->_xh['isf'] = 2; |
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239
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1 |
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$this->_xh['isf_reason'] = "$name element following a {$this->_xh['vt']} element inside a single value"; |
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240
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241
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1 |
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return; |
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242
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} |
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243
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// create an empty array to hold child values, and push it onto appropriate stack |
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244
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343 |
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$curVal = array(); |
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245
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343 |
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$curVal['values'] = array(); |
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246
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343 |
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$curVal['type'] = $name; |
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247
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// check for out-of-band information to rebuild php objs |
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248
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// and in case it is found, save it |
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249
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343 |
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if (@isset($attrs['PHP_CLASS'])) { |
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250
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20 |
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$curVal['php_class'] = $attrs['PHP_CLASS']; |
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251
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} |
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252
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343 |
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$this->_xh['valuestack'][] = $curVal; |
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253
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343 |
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$this->_xh['vt'] = 'data'; // be prepared for a data element next |
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254
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343 |
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break; |
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255
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607 |
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case 'DATA': |
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256
|
216 |
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if ($this->_xh['vt'] != 'data') { |
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257
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// two data elements inside a value: an error occurred! |
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258
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1 |
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$this->_xh['isf'] = 2; |
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259
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1 |
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$this->_xh['isf_reason'] = "found two data elements inside an array element"; |
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260
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261
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1 |
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return; |
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262
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} |
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263
|
607 |
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case 'METHODCALL': |
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264
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607 |
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case 'METHODRESPONSE': |
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265
|
607 |
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case 'PARAMS': |
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266
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// valid elements that add little to processing |
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267
|
607 |
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break; |
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268
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607 |
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case 'METHODNAME': |
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269
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607 |
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case 'NAME': |
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270
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/// @todo we could check for 2 NAME elements inside a MEMBER element |
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271
|
541 |
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$this->_xh['ac'] = ''; |
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272
|
541 |
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break; |
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273
|
607 |
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case 'FAULT': |
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274
|
80 |
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$this->_xh['isf'] = 1; |
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275
|
80 |
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break; |
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276
|
607 |
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case 'MEMBER': |
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277
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// set member name to null, in case we do not find in the xml later on |
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278
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244 |
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$this->_xh['valuestack'][count($this->_xh['valuestack']) - 1]['name'] = ''; |
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279
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//$this->_xh['ac']=''; |
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280
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// Drop trough intentionally |
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281
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606 |
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case 'PARAM': |
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282
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// clear value type, so we can check later if no value has been passed for this param/member |
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283
|
607 |
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$this->_xh['vt'] = null; |
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284
|
607 |
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break; |
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285
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21 |
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case 'NIL': |
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286
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21 |
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case 'EX:NIL': |
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287
|
21 |
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if (PhpXmlRpc::$xmlrpc_null_extension) { |
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288
|
21 |
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if ($this->_xh['vt'] != 'value') { |
|
289
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// two data elements inside a value: an error occurred! |
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290
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$this->_xh['isf'] = 2; |
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291
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$this->_xh['isf_reason'] = "$name element following a {$this->_xh['vt']} element inside a single value"; |
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292
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|
293
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return; |
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294
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} |
|
295
|
21 |
|
$this->_xh['ac'] = ''; // reset the accumulator |
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296
|
21 |
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break; |
|
297
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|
} |
|
298
|
|
|
// we do not support the <NIL/> extension, so |
|
299
|
|
|
// drop through intentionally |
|
300
|
|
|
default: |
|
301
|
|
|
// INVALID ELEMENT: RAISE ISF so that it is later recognized!!! |
|
302
|
1 |
|
$this->_xh['isf'] = 2; |
|
303
|
1 |
|
$this->_xh['isf_reason'] = "found not-xmlrpc xml element $name"; |
|
304
|
1 |
|
break; |
|
305
|
|
|
} |
|
306
|
|
|
|
|
307
|
|
|
// Save current element name to stack, to validate nesting |
|
308
|
607 |
|
$this->_xh['stack'][] = $name; |
|
309
|
|
|
|
|
310
|
|
|
/// @todo optimization creep: move this inside the big switch() above |
|
311
|
607 |
|
if ($name != 'VALUE') { |
|
312
|
607 |
|
$this->_xh['lv'] = 0; |
|
313
|
|
|
} |
|
314
|
|
|
} |
|
315
|
607 |
|
} |
|
316
|
|
|
|
|
317
|
|
|
/** |
|
318
|
|
|
* xml parser handler function for opening element tags. |
|
319
|
|
|
* Used in decoding xml chunks that might represent single xmlrpc values as well as requests, responses. |
|
320
|
|
|
* @deprecated |
|
321
|
|
|
* @param resource $parser |
|
322
|
|
|
* @param $name |
|
323
|
|
|
* @param $attrs |
|
324
|
|
|
*/ |
|
325
|
|
|
public function xmlrpc_se_any($parser, $name, $attrs) |
|
326
|
|
|
{ |
|
327
|
|
|
$this->xmlrpc_se($parser, $name, $attrs, true); |
|
328
|
|
|
} |
|
329
|
|
|
|
|
330
|
|
|
/** |
|
331
|
|
|
* xml parser handler function for close element tags. |
|
332
|
|
|
* @param resource $parser |
|
333
|
|
|
* @param string $name |
|
334
|
|
|
* @param bool $rebuildXmlrpcvals |
|
335
|
|
|
*/ |
|
336
|
607 |
|
public function xmlrpc_ee($parser, $name, $rebuildXmlrpcvals = true) |
|
|
|
|
|
|
337
|
|
|
{ |
|
338
|
607 |
|
if ($this->_xh['isf'] < 2) { |
|
339
|
|
|
// push this element name from stack |
|
340
|
|
|
// NB: if XML validates, correct opening/closing is guaranteed and |
|
341
|
|
|
// we do not have to check for $name == $currElem. |
|
342
|
|
|
// we also checked for proper nesting at start of elements... |
|
343
|
606 |
|
$currElem = array_pop($this->_xh['stack']); |
|
|
|
|
|
|
344
|
|
|
|
|
345
|
606 |
|
switch ($name) { |
|
346
|
606 |
|
case 'VALUE': |
|
347
|
|
|
// This if() detects if no scalar was inside <VALUE></VALUE> |
|
348
|
604 |
|
if ($this->_xh['vt'] == 'value') { |
|
349
|
28 |
|
$this->_xh['value'] = $this->_xh['ac']; |
|
350
|
28 |
|
$this->_xh['vt'] = Value::$xmlrpcString; |
|
351
|
|
|
} |
|
352
|
|
|
|
|
353
|
604 |
|
if ($rebuildXmlrpcvals) { |
|
354
|
|
|
// build the xmlrpc val out of the data received, and substitute it |
|
355
|
602 |
|
$temp = new Value($this->_xh['value'], $this->_xh['vt']); |
|
356
|
|
|
// in case we got info about underlying php class, save it |
|
357
|
|
|
// in the object we're rebuilding |
|
358
|
602 |
|
if (isset($this->_xh['php_class'])) { |
|
359
|
20 |
|
$temp->_php_class = $this->_xh['php_class']; |
|
360
|
|
|
} |
|
361
|
|
|
// check if we are inside an array or struct: |
|
362
|
|
|
// if value just built is inside an array, let's move it into array on the stack |
|
363
|
602 |
|
$vscount = count($this->_xh['valuestack']); |
|
364
|
602 |
|
if ($vscount && $this->_xh['valuestack'][$vscount - 1]['type'] == 'ARRAY') { |
|
365
|
215 |
|
$this->_xh['valuestack'][$vscount - 1]['values'][] = $temp; |
|
366
|
|
|
} else { |
|
367
|
602 |
|
$this->_xh['value'] = $temp; |
|
368
|
|
|
} |
|
369
|
|
|
} else { |
|
370
|
|
|
/// @todo this needs to treat correctly php-serialized objects, |
|
371
|
|
|
/// since std deserializing is done by php_xmlrpc_decode, |
|
372
|
|
|
/// which we will not be calling... |
|
373
|
25 |
|
if (isset($this->_xh['php_class'])) { |
|
374
|
|
|
} |
|
375
|
|
|
|
|
376
|
|
|
// check if we are inside an array or struct: |
|
377
|
|
|
// if value just built is inside an array, let's move it into array on the stack |
|
378
|
25 |
|
$vscount = count($this->_xh['valuestack']); |
|
379
|
25 |
|
if ($vscount && $this->_xh['valuestack'][$vscount - 1]['type'] == 'ARRAY') { |
|
380
|
21 |
|
$this->_xh['valuestack'][$vscount - 1]['values'][] = $this->_xh['value']; |
|
381
|
|
|
} |
|
382
|
|
|
} |
|
383
|
604 |
|
break; |
|
384
|
606 |
|
case 'BOOLEAN': |
|
385
|
606 |
|
case 'I4': |
|
386
|
606 |
|
case 'I8': |
|
387
|
606 |
|
case 'EX:I8': |
|
388
|
606 |
|
case 'INT': |
|
389
|
606 |
|
case 'STRING': |
|
390
|
605 |
|
case 'DOUBLE': |
|
391
|
605 |
|
case 'DATETIME.ISO8601': |
|
392
|
605 |
|
case 'BASE64': |
|
393
|
584 |
|
$this->_xh['vt'] = strtolower($name); |
|
394
|
|
|
/// @todo: optimization creep - remove the if/elseif cycle below |
|
395
|
|
|
/// since the case() in which we are already did that |
|
396
|
584 |
|
if ($name == 'STRING') { |
|
397
|
501 |
|
$this->_xh['value'] = $this->_xh['ac']; |
|
398
|
394 |
|
} elseif ($name == 'DATETIME.ISO8601') { |
|
399
|
6 |
|
if (!preg_match('/^[0-9]{8}T[0-9]{2}:[0-9]{2}:[0-9]{2}$/', $this->_xh['ac'])) { |
|
400
|
|
|
Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': invalid value received in DATETIME: ' . $this->_xh['ac']); |
|
401
|
|
|
} |
|
402
|
6 |
|
$this->_xh['vt'] = Value::$xmlrpcDateTime; |
|
403
|
6 |
|
$this->_xh['value'] = $this->_xh['ac']; |
|
404
|
389 |
|
} elseif ($name == 'BASE64') { |
|
405
|
|
|
/// @todo check for failure of base64 decoding / catch warnings |
|
406
|
20 |
|
$this->_xh['value'] = base64_decode($this->_xh['ac']); |
|
407
|
370 |
|
} elseif ($name == 'BOOLEAN') { |
|
408
|
|
|
// special case here: we translate boolean 1 or 0 into PHP |
|
409
|
|
|
// constants true or false. |
|
410
|
|
|
// Strings 'true' and 'false' are accepted, even though the |
|
411
|
|
|
// spec never mentions them (see eg. Blogger api docs) |
|
412
|
|
|
// NB: this simple checks helps a lot sanitizing input, ie no |
|
413
|
|
|
// security problems around here |
|
414
|
41 |
|
if ($this->_xh['ac'] == '1' || strcasecmp($this->_xh['ac'], 'true') == 0) { |
|
415
|
41 |
|
$this->_xh['value'] = true; |
|
416
|
|
|
} else { |
|
417
|
|
|
// log if receiving something strange, even though we set the value to false anyway |
|
418
|
21 |
|
if ($this->_xh['ac'] != '0' && strcasecmp($this->_xh['ac'], 'false') != 0) { |
|
419
|
|
|
Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': invalid value received in BOOLEAN: ' . $this->_xh['ac']); |
|
420
|
|
|
} |
|
421
|
41 |
|
$this->_xh['value'] = false; |
|
422
|
|
|
} |
|
423
|
331 |
|
} elseif ($name == 'DOUBLE') { |
|
424
|
|
|
// we have a DOUBLE |
|
425
|
|
|
// we must check that only 0123456789-.<space> are characters here |
|
426
|
|
|
// NOTE: regexp could be much stricter than this... |
|
427
|
22 |
|
if (!preg_match('/^[+-eE0123456789 \t.]+$/', $this->_xh['ac'])) { |
|
428
|
|
|
/// @todo: find a better way of throwing an error than this! |
|
429
|
|
|
Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': non numeric value received in DOUBLE: ' . $this->_xh['ac']); |
|
430
|
|
|
$this->_xh['value'] = 'ERROR_NON_NUMERIC_FOUND'; |
|
431
|
|
|
} else { |
|
432
|
|
|
// it's ok, add it on |
|
433
|
22 |
|
$this->_xh['value'] = (double)$this->_xh['ac']; |
|
434
|
|
|
} |
|
435
|
|
|
} else { |
|
436
|
|
|
// we have an I4/I8/INT |
|
437
|
|
|
// we must check that only 0123456789-<space> are characters here |
|
438
|
312 |
|
if (!preg_match('/^[+-]?[0123456789 \t]+$/', $this->_xh['ac'])) { |
|
439
|
|
|
/// @todo find a better way of throwing an error than this! |
|
440
|
|
|
Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': non numeric value received in INT: ' . $this->_xh['ac']); |
|
441
|
|
|
$this->_xh['value'] = 'ERROR_NON_NUMERIC_FOUND'; |
|
442
|
|
|
} else { |
|
443
|
|
|
// it's ok, add it on |
|
444
|
312 |
|
$this->_xh['value'] = (int)$this->_xh['ac']; |
|
445
|
|
|
} |
|
446
|
|
|
} |
|
447
|
584 |
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
448
|
584 |
|
break; |
|
449
|
605 |
|
case 'NAME': |
|
450
|
244 |
|
$this->_xh['valuestack'][count($this->_xh['valuestack']) - 1]['name'] = $this->_xh['ac']; |
|
451
|
244 |
|
break; |
|
452
|
605 |
|
case 'MEMBER': |
|
453
|
|
|
// add to array in the stack the last element built, |
|
454
|
|
|
// unless no VALUE was found |
|
455
|
244 |
|
if ($this->_xh['vt']) { |
|
456
|
225 |
|
$vscount = count($this->_xh['valuestack']); |
|
457
|
225 |
|
$this->_xh['valuestack'][$vscount - 1]['values'][$this->_xh['valuestack'][$vscount - 1]['name']] = $this->_xh['value']; |
|
458
|
|
|
} else { |
|
459
|
20 |
|
Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': missing VALUE inside STRUCT in received xml'); |
|
460
|
|
|
} |
|
461
|
244 |
|
break; |
|
462
|
605 |
|
case 'DATA': |
|
463
|
216 |
|
$this->_xh['vt'] = null; // reset this to check for 2 data elements in a row - even if they're empty |
|
464
|
216 |
|
break; |
|
465
|
604 |
|
case 'STRUCT': |
|
466
|
604 |
|
case 'ARRAY': |
|
467
|
|
|
// fetch out of stack array of values, and promote it to current value |
|
468
|
342 |
|
$currVal = array_pop($this->_xh['valuestack']); |
|
469
|
342 |
|
$this->_xh['value'] = $currVal['values']; |
|
470
|
342 |
|
$this->_xh['vt'] = strtolower($name); |
|
471
|
342 |
|
if (isset($currVal['php_class'])) { |
|
472
|
20 |
|
$this->_xh['php_class'] = $currVal['php_class']; |
|
473
|
|
|
} |
|
474
|
342 |
|
break; |
|
475
|
604 |
|
case 'PARAM': |
|
476
|
|
|
// add to array of params the current value, |
|
477
|
|
|
// unless no VALUE was found |
|
478
|
602 |
|
if ($this->_xh['vt']) { |
|
479
|
602 |
|
$this->_xh['params'][] = $this->_xh['value']; |
|
480
|
602 |
|
$this->_xh['pt'][] = $this->_xh['vt']; |
|
481
|
|
|
} else { |
|
482
|
|
|
Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': missing VALUE inside PARAM in received xml'); |
|
483
|
|
|
} |
|
484
|
602 |
|
break; |
|
485
|
604 |
|
case 'METHODNAME': |
|
486
|
491 |
|
$this->_xh['method'] = preg_replace('/^[\n\r\t ]+/', '', $this->_xh['ac']); |
|
487
|
491 |
|
break; |
|
488
|
603 |
|
case 'NIL': |
|
489
|
603 |
|
case 'EX:NIL': |
|
490
|
21 |
|
if (PhpXmlRpc::$xmlrpc_null_extension) { |
|
491
|
21 |
|
$this->_xh['vt'] = 'null'; |
|
492
|
21 |
|
$this->_xh['value'] = null; |
|
493
|
21 |
|
$this->_xh['lv'] = 3; |
|
494
|
21 |
|
break; |
|
495
|
|
|
} |
|
496
|
|
|
// drop through intentionally if nil extension not enabled |
|
497
|
603 |
|
case 'PARAMS': |
|
498
|
603 |
|
case 'FAULT': |
|
499
|
603 |
|
case 'METHODCALL': |
|
500
|
602 |
|
case 'METHORESPONSE': |
|
501
|
603 |
|
break; |
|
502
|
|
|
default: |
|
503
|
|
|
// End of INVALID ELEMENT! |
|
504
|
|
|
// shall we add an assert here for unreachable code??? |
|
505
|
602 |
|
break; |
|
506
|
|
|
} |
|
507
|
|
|
} |
|
508
|
607 |
|
} |
|
509
|
|
|
|
|
510
|
|
|
/** |
|
511
|
|
|
* Used in decoding xmlrpc requests/responses without rebuilding xmlrpc Values. |
|
512
|
|
|
* @param resource $parser |
|
513
|
|
|
* @param string $name |
|
514
|
|
|
*/ |
|
515
|
25 |
|
public function xmlrpc_ee_fast($parser, $name) |
|
516
|
|
|
{ |
|
517
|
25 |
|
$this->xmlrpc_ee($parser, $name, false); |
|
518
|
25 |
|
} |
|
519
|
|
|
|
|
520
|
|
|
/** |
|
521
|
|
|
* xml parser handler function for character data. |
|
522
|
|
|
* @param resource $parser |
|
523
|
|
|
* @param string $data |
|
524
|
|
|
*/ |
|
525
|
607 |
|
public function xmlrpc_cd($parser, $data) |
|
|
|
|
|
|
526
|
|
|
{ |
|
527
|
|
|
// skip processing if xml fault already detected |
|
528
|
607 |
|
if ($this->_xh['isf'] < 2) { |
|
529
|
|
|
// "lookforvalue==3" means that we've found an entire value |
|
530
|
|
|
// and should discard any further character data |
|
531
|
607 |
|
if ($this->_xh['lv'] != 3) { |
|
532
|
607 |
|
$this->_xh['ac'] .= $data; |
|
533
|
|
|
} |
|
534
|
|
|
} |
|
535
|
607 |
|
} |
|
536
|
|
|
|
|
537
|
|
|
/** |
|
538
|
|
|
* xml parser handler function for 'other stuff', ie. not char data or |
|
539
|
|
|
* element start/end tag. In fact it only gets called on unknown entities... |
|
540
|
|
|
* @param $parser |
|
541
|
|
|
* @param string data |
|
|
|
|
|
|
542
|
|
|
*/ |
|
543
|
593 |
|
public function xmlrpc_dh($parser, $data) |
|
|
|
|
|
|
544
|
|
|
{ |
|
545
|
|
|
// skip processing if xml fault already detected |
|
546
|
593 |
|
if ($this->_xh['isf'] < 2) { |
|
547
|
593 |
|
if (substr($data, 0, 1) == '&' && substr($data, -1, 1) == ';') { |
|
548
|
|
|
$this->_xh['ac'] .= $data; |
|
549
|
|
|
} |
|
550
|
|
|
} |
|
551
|
|
|
|
|
552
|
|
|
//return true; |
|
553
|
593 |
|
} |
|
554
|
|
|
|
|
555
|
|
|
/** |
|
556
|
|
|
* xml charset encoding guessing helper function. |
|
557
|
|
|
* Tries to determine the charset encoding of an XML chunk received over HTTP. |
|
558
|
|
|
* NB: according to the spec (RFC 3023), if text/xml content-type is received over HTTP without a content-type, |
|
559
|
|
|
* we SHOULD assume it is strictly US-ASCII. But we try to be more tolerant of non conforming (legacy?) clients/servers, |
|
560
|
|
|
* which will be most probably using UTF-8 anyway... |
|
561
|
|
|
* In order of importance checks: |
|
562
|
|
|
* 1. http headers |
|
563
|
|
|
* 2. BOM |
|
564
|
|
|
* 3. XML declaration |
|
565
|
|
|
* 4. guesses using mb_detect_encoding() |
|
566
|
|
|
* |
|
567
|
|
|
* @param string $httpHeader the http Content-type header |
|
568
|
|
|
* @param string $xmlChunk xml content buffer |
|
569
|
|
|
* @param string $encodingPrefs comma separated list of character encodings to be used as default (when mb extension is enabled). |
|
570
|
|
|
* This can also be set globally using PhpXmlRpc::$xmlrpc_detectencodings |
|
571
|
|
|
* @return string the encoding determined. Null if it can't be determined and mbstring is enabled, |
|
572
|
|
|
* PhpXmlRpc::$xmlrpc_defencoding if it can't be determined and mbstring is not enabled |
|
573
|
|
|
* |
|
574
|
|
|
* @todo explore usage of mb_http_input(): does it detect http headers + post data? if so, use it instead of hand-detection!!! |
|
575
|
|
|
*/ |
|
576
|
608 |
|
public static function guessEncoding($httpHeader = '', $xmlChunk = '', $encodingPrefs = null) |
|
577
|
|
|
{ |
|
578
|
|
|
// discussion: see http://www.yale.edu/pclt/encoding/ |
|
579
|
|
|
// 1 - test if encoding is specified in HTTP HEADERS |
|
580
|
|
|
|
|
581
|
|
|
// Details: |
|
582
|
|
|
// LWS: (\13\10)?( |\t)+ |
|
583
|
|
|
// token: (any char but excluded stuff)+ |
|
584
|
|
|
// quoted string: " (any char but double quotes and control chars)* " |
|
585
|
|
|
// header: Content-type = ...; charset=value(; ...)* |
|
586
|
|
|
// where value is of type token, no LWS allowed between 'charset' and value |
|
587
|
|
|
// Note: we do not check for invalid chars in VALUE: |
|
588
|
|
|
// this had better be done using pure ereg as below |
|
589
|
|
|
// Note 2: we might be removing whitespace/tabs that ought to be left in if |
|
590
|
|
|
// the received charset is a quoted string. But nobody uses such charset names... |
|
591
|
|
|
|
|
592
|
|
|
/// @todo this test will pass if ANY header has charset specification, not only Content-Type. Fix it? |
|
593
|
608 |
|
$matches = array(); |
|
594
|
608 |
|
if (preg_match('/;\s*charset\s*=([^;]+)/i', $httpHeader, $matches)) { |
|
595
|
592 |
|
return strtoupper(trim($matches[1], " \t\"")); |
|
596
|
|
|
} |
|
597
|
|
|
|
|
598
|
|
|
// 2 - scan the first bytes of the data for a UTF-16 (or other) BOM pattern |
|
599
|
|
|
// (source: http://www.w3.org/TR/2000/REC-xml-20001006) |
|
600
|
|
|
// NOTE: actually, according to the spec, even if we find the BOM and determine |
|
601
|
|
|
// an encoding, we should check if there is an encoding specified |
|
602
|
|
|
// in the xml declaration, and verify if they match. |
|
603
|
|
|
/// @todo implement check as described above? |
|
604
|
|
|
/// @todo implement check for first bytes of string even without a BOM? (It sure looks harder than for cases WITH a BOM) |
|
605
|
460 |
|
if (preg_match('/^(\x00\x00\xFE\xFF|\xFF\xFE\x00\x00|\x00\x00\xFF\xFE|\xFE\xFF\x00\x00)/', $xmlChunk)) { |
|
606
|
|
|
return 'UCS-4'; |
|
607
|
460 |
|
} elseif (preg_match('/^(\xFE\xFF|\xFF\xFE)/', $xmlChunk)) { |
|
608
|
|
|
return 'UTF-16'; |
|
609
|
460 |
|
} elseif (preg_match('/^(\xEF\xBB\xBF)/', $xmlChunk)) { |
|
610
|
|
|
return 'UTF-8'; |
|
611
|
|
|
} |
|
612
|
|
|
|
|
613
|
|
|
// 3 - test if encoding is specified in the xml declaration |
|
614
|
|
|
// Details: |
|
615
|
|
|
// SPACE: (#x20 | #x9 | #xD | #xA)+ === [ \x9\xD\xA]+ |
|
616
|
|
|
// EQ: SPACE?=SPACE? === [ \x9\xD\xA]*=[ \x9\xD\xA]* |
|
617
|
460 |
|
if (preg_match('/^<\?xml\s+version\s*=\s*' . "((?:\"[a-zA-Z0-9_.:-]+\")|(?:'[a-zA-Z0-9_.:-]+'))" . |
|
618
|
460 |
|
'\s+encoding\s*=\s*' . "((?:\"[A-Za-z][A-Za-z0-9._-]*\")|(?:'[A-Za-z][A-Za-z0-9._-]*'))/", |
|
619
|
|
|
$xmlChunk, $matches)) { |
|
620
|
22 |
|
return strtoupper(substr($matches[2], 1, -1)); |
|
621
|
|
|
} |
|
622
|
|
|
|
|
623
|
|
|
// 4 - if mbstring is available, let it do the guesswork |
|
624
|
439 |
|
if (extension_loaded('mbstring')) { |
|
625
|
439 |
|
if ($encodingPrefs == null && PhpXmlRpc::$xmlrpc_detectencodings != null) { |
|
|
|
|
|
|
626
|
4 |
|
$encodingPrefs = PhpXmlRpc::$xmlrpc_detectencodings; |
|
627
|
|
|
} |
|
628
|
439 |
|
if ($encodingPrefs) { |
|
629
|
4 |
|
$enc = mb_detect_encoding($xmlChunk, $encodingPrefs); |
|
630
|
|
|
} else { |
|
631
|
435 |
|
$enc = mb_detect_encoding($xmlChunk); |
|
632
|
|
|
} |
|
633
|
|
|
// NB: mb_detect likes to call it ascii, xml parser likes to call it US_ASCII... |
|
634
|
|
|
// IANA also likes better US-ASCII, so go with it |
|
635
|
439 |
|
if ($enc == 'ASCII') { |
|
636
|
432 |
|
$enc = 'US-' . $enc; |
|
637
|
|
|
} |
|
638
|
|
|
|
|
639
|
439 |
|
return $enc; |
|
640
|
|
|
} else { |
|
641
|
|
|
// no encoding specified: as per HTTP1.1 assume it is iso-8859-1? |
|
642
|
|
|
// Both RFC 2616 (HTTP 1.1) and 1945 (HTTP 1.0) clearly state that for text/xxx content types |
|
643
|
|
|
// this should be the standard. And we should be getting text/xml as request and response. |
|
644
|
|
|
// BUT we have to be backward compatible with the lib, which always used UTF-8 as default... |
|
645
|
|
|
return PhpXmlRpc::$xmlrpc_defencoding; |
|
646
|
|
|
} |
|
647
|
|
|
} |
|
648
|
|
|
|
|
649
|
|
|
/** |
|
650
|
|
|
* Helper function: checks if an xml chunk as a charset declaration (BOM or in the xml declaration) |
|
651
|
|
|
* |
|
652
|
|
|
* @param string $xmlChunk |
|
653
|
|
|
* @return bool |
|
654
|
|
|
*/ |
|
655
|
77 |
|
public static function hasEncoding($xmlChunk) |
|
656
|
|
|
{ |
|
657
|
|
|
// scan the first bytes of the data for a UTF-16 (or other) BOM pattern |
|
658
|
|
|
// (source: http://www.w3.org/TR/2000/REC-xml-20001006) |
|
659
|
77 |
|
if (preg_match('/^(\x00\x00\xFE\xFF|\xFF\xFE\x00\x00|\x00\x00\xFF\xFE|\xFE\xFF\x00\x00)/', $xmlChunk)) { |
|
660
|
|
|
return true; |
|
661
|
77 |
|
} elseif (preg_match('/^(\xFE\xFF|\xFF\xFE)/', $xmlChunk)) { |
|
662
|
|
|
return true; |
|
663
|
77 |
|
} elseif (preg_match('/^(\xEF\xBB\xBF)/', $xmlChunk)) { |
|
664
|
|
|
return true; |
|
665
|
|
|
} |
|
666
|
|
|
|
|
667
|
|
|
// test if encoding is specified in the xml declaration |
|
668
|
|
|
// Details: |
|
669
|
|
|
// SPACE: (#x20 | #x9 | #xD | #xA)+ === [ \x9\xD\xA]+ |
|
670
|
|
|
// EQ: SPACE?=SPACE? === [ \x9\xD\xA]*=[ \x9\xD\xA]* |
|
671
|
77 |
|
if (preg_match('/^<\?xml\s+version\s*=\s*' . "((?:\"[a-zA-Z0-9_.:-]+\")|(?:'[a-zA-Z0-9_.:-]+'))" . |
|
672
|
77 |
|
'\s+encoding\s*=\s*' . "((?:\"[A-Za-z][A-Za-z0-9._-]*\")|(?:'[A-Za-z][A-Za-z0-9._-]*'))/", |
|
673
|
|
|
$xmlChunk, $matches)) { |
|
674
|
73 |
|
return true; |
|
675
|
|
|
} |
|
676
|
|
|
|
|
677
|
5 |
|
return false; |
|
678
|
|
|
} |
|
679
|
|
|
} |
|
680
|
|
|
|
gggeek /
phpxmlrpc
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.