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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\Traits\DeprecationLogger; |
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use PhpXmlRpc\Value; |
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/** |
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* Deals with parsing the XML. |
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* @see http://xmlrpc.com/spec.md |
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* |
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* @todo implement an interface to allow for alternative implementations |
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* - make access to $_xh protected, return more high-level data structures |
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* - move the private parts of $_xh to the internal-use parsing-options config |
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* - add parseRequest, parseResponse, parseValue methods |
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* @todo if iconv() or mb_string() are available, we could allow to convert the received xml to a custom charset encoding |
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* while parsing, which is faster than doing it later by going over the rebuilt data structure |
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* @todo rename? This is an xml-rpc parser, not a generic xml parser... |
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* |
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* @property array $xmlrpc_valid_parents deprecated - public access left in purely for BC |
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* @property int $accept deprecated - (protected) access left in purely for BC |
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*/ |
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class XMLParser |
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{ |
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use DeprecationLogger; |
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const RETURN_XMLRPCVALS = 'xmlrpcvals'; |
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const RETURN_EPIVALS = 'epivals'; |
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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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/** |
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* @var int |
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* The max length beyond which data will get truncated in error messages |
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*/ |
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protected $maxLogValueLength = 100; |
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/** |
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* @var array |
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* Used to store state during parsing and to pass parsing results to callers. |
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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 xml-rpc 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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* (values: 0=not looking, 1=looking, 3=found) |
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* public: |
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* isf - used to indicate an xml-rpc response fault (1), invalid xml-rpc fault (2), xml parsing fault (3) |
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* isf_reason - used for storing xml-rpc response fault string |
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* value - used to store the value in responses |
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* method - used to store method name in requests |
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* params - used to store parameters in requests |
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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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*/ |
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protected $_xh = array( |
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'ac' => '', |
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'stack' => array(), |
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'valuestack' => array(), |
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'lv' => 0, |
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'isf' => 0, |
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'isf_reason' => '', |
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'value' => null, |
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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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/** |
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* @var array[] |
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*/ |
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protected $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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572 |
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'ARRAY' => array('VALUE'), |
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572 |
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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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712 |
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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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/** @var array |
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* Used keys: accept, target_charset, methodname_callback, plus the ones set here. |
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* We initialize it partially to help keep BC with subclasses which might have reimplemented `parse()` but not |
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* the element handler methods |
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*/ |
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protected $current_parsing_options = array( |
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'xmlrpc_null_extension' => false, |
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'xmlrpc_return_datetimes' => false, |
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'xmlrpc_reject_invalid_values' => false |
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); |
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2 |
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2 |
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/** |
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2 |
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* @param array $options integer keys: options passed to the inner xml parser |
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* string keys: |
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* - target_charset (string) |
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* - methodname_callback (callable) |
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* - xmlrpc_null_extension (bool) |
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* - xmlrpc_return_datetimes (bool) |
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* - xmlrpc_reject_invalid_values (bool) |
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*/ |
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public function __construct(array $options = array()) |
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{ |
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$this->parsing_options = $options; |
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} |
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710 |
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/** |
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* Parses an xml-rpc xml string. Results of the parsing are found in $this->['_xh']. |
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* Logs to the error log any issues which do not cause the parsing to fail. |
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* |
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* @param string $data |
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* @param string $returnType self::RETURN_XMLRPCVALS, self::RETURN_PHP, self::RETURN_EPIVALS |
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* @param int $accept a bit-combination of self::ACCEPT_REQUEST, self::ACCEPT_RESPONSE, self::ACCEPT_VALUE |
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* @param array $options integer-key options are passed to the xml parser, string-key options are used independently. |
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* These options are added to options received in the constructor. |
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* Note that if options xmlrpc_null_extension, xmlrpc_return_datetimes and xmlrpc_reject_invalid_values |
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* are not set, the default settings from PhpXmlRpc\PhpXmlRpc are used |
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708 |
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* @return array see the definition of $this->_xh for the meaning of the results |
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* @throws \Exception this can happen if a callback function is set and it does throw (i.e. we do not catch exceptions) |
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* |
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* @todo refactor? we could 1. return the parsed data structure, and 2. move $returnType and $accept into options |
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* @todo feature-creep make it possible to pass in options overriding usage of PhpXmlRpc::$xmlrpc_XXX_format, so |
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* that parsing will be completely independent of global state. Note that it might incur a small perf hit... |
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710 |
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*/ |
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public function parse($data, $returnType = self::RETURN_XMLRPCVALS, $accept = 3, $options = array()) |
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{ |
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$this->_xh = array( |
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'ac' => '', |
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'stack' => array(), |
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710 |
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'valuestack' => array(), |
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3 |
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'lv' => 0, |
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3 |
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'isf' => 0, |
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3 |
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'isf_reason' => '', |
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'value' => null, |
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3 |
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'method' => false, // so we can check later if we got a methodname or not |
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3 |
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'params' => false, // so we can check later if we got a params tag or not |
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3 |
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'pt' => array(), |
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'rt' => '', |
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); |
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$len = strlen($data); |
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710 |
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// we test for empty documents here to save on resource allocation and simplify the chunked-parsing loop below |
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if ($len == 0) { |
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$this->_xh['isf'] = 3; |
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$this->_xh['isf_reason'] = 'XML error 5: empty document'; |
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return $this->_xh; |
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} |
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$this->current_parsing_options = array('accept' => $accept); |
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710 |
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$mergedOptions = $this->parsing_options; |
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foreach ($options as $key => $val) { |
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$mergedOptions[$key] = $val; |
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710 |
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} |
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foreach ($mergedOptions as $key => $val) { |
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710 |
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// q: can php be built without ctype? should we use a regexp? |
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if (is_string($key) && !ctype_digit($key)) { |
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/// @todo on invalid options, throw/error-out instead of logging an error message? |
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switch($key) { |
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case 'target_charset': |
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710 |
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if (function_exists('mb_convert_encoding')) { |
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710 |
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$this->current_parsing_options['target_charset'] = $val; |
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} else { |
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$this->getLogger()->error('XML-RPC: ' . __METHOD__ . ": 'target_charset' option is unsupported without mbstring"); |
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} |
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710 |
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break; |
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198
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708 |
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199
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3 |
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case 'methodname_callback': |
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200
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703 |
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if (is_callable($val)) { |
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201
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710 |
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$this->current_parsing_options['methodname_callback'] = $val; |
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} else { |
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2 |
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$this->getLogger()->error('XML-RPC: ' . __METHOD__ . ": Callback passed as 'methodname_callback' is not callable"); |
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2 |
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} |
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break; |
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206
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703 |
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207
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case 'xmlrpc_null_extension': |
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208
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case 'xmlrpc_return_datetimes': |
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209
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case 'xmlrpc_reject_invalid_values': |
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210
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710 |
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$this->current_parsing_options[$key] = $val; |
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211
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710 |
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break; |
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212
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2 |
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213
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2 |
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default: |
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$this->getLogger()->error('XML-RPC: ' . __METHOD__ . ": unsupported option: $key"); |
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215
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2 |
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} |
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216
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unset($mergedOptions[$key]); |
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217
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} |
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218
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} |
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219
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710 |
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220
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if (!isset($this->current_parsing_options['xmlrpc_null_extension'])) { |
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221
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710 |
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$this->current_parsing_options['xmlrpc_null_extension'] = PhpXmlRpc::$xmlrpc_null_extension; |
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222
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} |
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223
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708 |
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if (!isset($this->current_parsing_options['xmlrpc_return_datetimes'])) { |
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224
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708 |
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$this->current_parsing_options['xmlrpc_return_datetimes'] = PhpXmlRpc::$xmlrpc_return_datetimes; |
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225
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708 |
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} |
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226
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708 |
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if (!isset($this->current_parsing_options['xmlrpc_reject_invalid_values'])) { |
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227
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708 |
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$this->current_parsing_options['xmlrpc_reject_invalid_values'] = PhpXmlRpc::$xmlrpc_reject_invalid_values; |
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228
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710 |
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} |
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229
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710 |
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230
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1 |
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// NB: we use '' instead of null to force charset detection from the xml declaration |
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231
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$parser = xml_parser_create(''); |
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232
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233
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foreach ($mergedOptions as $key => $val) { |
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234
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xml_parser_set_option($parser, $key, $val); |
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235
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} |
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236
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237
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// always set this, in case someone tries to disable it via options... |
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238
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710 |
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xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 1); |
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239
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710 |
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240
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710 |
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switch ($returnType) { |
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241
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710 |
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case self::RETURN_PHP: |
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242
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710 |
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xml_set_element_handler($parser, array($this, 'xmlrpc_se'), array($this, 'xmlrpc_ee_fast')); |
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243
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710 |
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break; |
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244
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710 |
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case self::RETURN_EPIVALS: |
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245
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685 |
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xml_set_element_handler($parser, array($this, 'xmlrpc_se'), array($this, 'xmlrpc_ee_epi')); |
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246
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break; |
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247
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1 |
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/// @todo log an error / throw / error-out on unsupported return type |
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248
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1 |
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case XMLParser::RETURN_XMLRPCVALS: |
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249
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default: |
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250
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1 |
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xml_set_element_handler($parser, array($this, 'xmlrpc_se'), array($this, 'xmlrpc_ee')); |
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251
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} |
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252
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685 |
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253
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685 |
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xml_set_character_data_handler($parser, array($this, 'xmlrpc_cd')); |
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254
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710 |
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xml_set_default_handler($parser, array($this, 'xmlrpc_dh')); |
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255
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710 |
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256
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400 |
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try { |
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257
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// @see ticket #70 - we have to parse big xml docs in chunks to avoid errors |
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258
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1 |
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for ($offset = 0; $offset < $len; $offset += $this->maxChunkLength) { |
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259
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1 |
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$chunk = substr($data, $offset, $this->maxChunkLength); |
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260
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// error handling: xml not well formed |
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261
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1 |
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if (!@xml_parse($parser, $chunk, $offset + $this->maxChunkLength >= $len)) { |
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262
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$errCode = xml_get_error_code($parser); |
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263
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$errStr = sprintf('XML error %s: %s at line %d, column %d', $errCode, xml_error_string($errCode), |
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264
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399 |
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xml_get_current_line_number($parser), xml_get_current_column_number($parser)); |
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265
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399 |
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$this->_xh['isf'] = 3; |
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266
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399 |
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$this->_xh['isf_reason'] = $errStr; |
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267
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} |
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268
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// no need to parse further if we already have a fatal error |
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269
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399 |
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if ($this->_xh['isf'] >= 2) { |
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270
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22 |
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break; |
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271
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} |
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272
|
399 |
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} |
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273
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399 |
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/// @todo bump minimum php version to 5.5 and use a finally clause instead of doing cleanup 3 times |
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274
|
399 |
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} catch (\Exception $e) { |
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275
|
710 |
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xml_parser_free($parser); |
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276
|
239 |
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$this->current_parsing_options = array(); |
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277
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/// @todo should we set $this->_xh['isf'] and $this->_xh['isf_reason'] ? |
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278
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1 |
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throw $e; |
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279
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1 |
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} catch (\Error $e) { |
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280
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xml_parser_free($parser); |
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281
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1 |
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$this->current_parsing_options = array(); |
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282
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//$this->accept = $prevAccept; |
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283
|
710 |
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/// @todo should we set $this->_xh['isf'] and $this->_xh['isf_reason'] ? |
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284
|
710 |
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throw $e; |
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285
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710 |
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} |
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286
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|
|
|
287
|
710 |
|
xml_parser_free($parser); |
|
288
|
710 |
|
$this->current_parsing_options = array(); |
|
289
|
710 |
|
|
|
290
|
|
|
// BC |
|
291
|
637 |
|
if ($this->_xh['params'] === false) { |
|
|
|
|
|
|
292
|
637 |
|
$this->_xh['params'] = array(); |
|
293
|
710 |
|
} |
|
294
|
109 |
|
|
|
295
|
109 |
|
return $this->_xh; |
|
296
|
710 |
|
} |
|
297
|
|
|
|
|
298
|
289 |
|
/** |
|
299
|
|
|
* xml parser handler function for opening element tags. |
|
300
|
|
|
* @internal |
|
301
|
688 |
|
* |
|
302
|
|
|
* @param resource $parser |
|
303
|
710 |
|
* @param string $name |
|
304
|
710 |
|
* @param $attrs |
|
305
|
23 |
|
* @param bool $acceptSingleVals DEPRECATED use the $accept parameter instead |
|
306
|
23 |
|
* @return void |
|
307
|
23 |
|
* |
|
308
|
23 |
|
* @todo optimization creep: throw when setting $this->_xh['isf'] > 1, to completely avoid further xml parsing |
|
309
|
|
|
* and remove the checking for $this->_xh['isf'] >= 2 everywhere |
|
310
|
|
|
*/ |
|
311
|
|
|
public function xmlrpc_se($parser, $name, $attrs, $acceptSingleVals = false) |
|
312
|
|
|
{ |
|
313
|
|
|
// if invalid xml-rpc already detected, skip all processing |
|
314
|
|
|
if ($this->_xh['isf'] >= 2) { |
|
315
|
23 |
|
return; |
|
316
|
23 |
|
} |
|
317
|
|
|
|
|
318
|
|
|
// check for correct element nesting |
|
319
|
|
|
if (count($this->_xh['stack']) == 0) { |
|
320
|
|
|
// top level element can only be of 2 types |
|
321
|
|
|
/// @todo optimization creep: save this check into a bool variable, instead of using count() every time: |
|
322
|
1 |
|
/// there is only a single top level element in xml anyway |
|
323
|
1 |
|
|
|
324
|
1 |
|
// BC |
|
325
|
|
|
if ($acceptSingleVals === false) { |
|
326
|
|
|
$accept = $this->current_parsing_options['accept']; |
|
327
|
|
|
} else { |
|
328
|
710 |
|
$this->logDeprecation('Using argument $acceptSingleVals for method ' . __METHOD__ . ' is deprecated'); |
|
329
|
|
|
$accept = self::ACCEPT_REQUEST | self::ACCEPT_RESPONSE | self::ACCEPT_VALUE; |
|
330
|
|
|
} |
|
331
|
710 |
|
if (($name == 'METHODCALL' && ($accept & self::ACCEPT_REQUEST)) || |
|
332
|
710 |
|
($name == 'METHODRESPONSE' && ($accept & self::ACCEPT_RESPONSE)) || |
|
333
|
|
|
($name == 'VALUE' && ($accept & self::ACCEPT_VALUE)) || |
|
334
|
|
|
($name == 'FAULT' && ($accept & self::ACCEPT_FAULT))) { |
|
335
|
710 |
|
$this->_xh['rt'] = strtolower($name); |
|
336
|
|
|
} else { |
|
337
|
|
|
$this->_xh['isf'] = 2; |
|
338
|
|
|
$this->_xh['isf_reason'] = 'missing top level xmlrpc element. Found: ' . $name; |
|
339
|
|
|
|
|
340
|
|
|
return; |
|
341
|
|
|
} |
|
342
|
|
|
} else { |
|
343
|
|
|
// not top level element: see if parent is OK |
|
344
|
|
|
$parent = end($this->_xh['stack']); |
|
345
|
|
|
if (!array_key_exists($name, $this->xmlrpc_valid_parents) || !in_array($parent, $this->xmlrpc_valid_parents[$name])) { |
|
346
|
|
|
$this->_xh['isf'] = 2; |
|
347
|
|
|
$this->_xh['isf_reason'] = "xmlrpc element $name cannot be child of $parent"; |
|
348
|
|
|
|
|
349
|
|
|
return; |
|
350
|
|
|
} |
|
351
|
|
|
} |
|
352
|
|
|
|
|
353
|
|
|
switch ($name) { |
|
354
|
|
|
// optimize for speed switch cases: most common cases first |
|
355
|
|
|
case 'VALUE': |
|
356
|
|
|
/// @todo we could check for 2 VALUE elements inside a MEMBER or PARAM element |
|
357
|
710 |
|
$this->_xh['vt'] = 'value'; // indicator: no value found yet |
|
358
|
|
|
$this->_xh['ac'] = ''; |
|
359
|
710 |
|
$this->_xh['lv'] = 1; |
|
360
|
|
|
$this->_xh['php_class'] = null; |
|
361
|
|
|
break; |
|
362
|
|
|
|
|
363
|
|
|
case 'I8': |
|
364
|
709 |
|
case 'EX:I8': |
|
365
|
|
|
if (PHP_INT_SIZE === 4) { |
|
366
|
709 |
|
// INVALID ELEMENT: RAISE ISF so that it is later recognized!!! |
|
367
|
709 |
|
$this->_xh['isf'] = 2; |
|
368
|
|
|
$this->_xh['isf_reason'] = "Received i8 element but php is compiled in 32 bit mode"; |
|
369
|
707 |
|
|
|
370
|
30 |
|
return; |
|
371
|
30 |
|
} |
|
372
|
|
|
// fall through voluntarily |
|
373
|
|
|
|
|
374
|
707 |
|
case 'I4': |
|
375
|
|
|
case 'INT': |
|
376
|
705 |
|
case 'STRING': |
|
377
|
|
|
case 'BOOLEAN': |
|
378
|
|
|
case 'DOUBLE': |
|
379
|
705 |
|
case 'DATETIME.ISO8601': |
|
380
|
22 |
|
case 'BASE64': |
|
381
|
|
|
if ($this->_xh['vt'] != 'value') { |
|
382
|
705 |
|
// two data elements inside a value: an error occurred! |
|
383
|
27 |
|
$this->_xh['isf'] = 2; |
|
384
|
|
|
$this->_xh['isf_reason'] = "$name element following a {$this->_xh['vt']} element inside a single value"; |
|
385
|
|
|
|
|
386
|
|
|
return; |
|
387
|
|
|
} |
|
388
|
|
|
$this->_xh['ac'] = ''; // reset the accumulator |
|
389
|
|
|
break; |
|
390
|
|
|
|
|
391
|
|
|
case 'STRUCT': |
|
392
|
|
|
case 'ARRAY': |
|
393
|
|
|
if ($this->_xh['vt'] != 'value') { |
|
394
|
|
|
// two data elements inside a value: an error occurred! |
|
395
|
|
|
$this->_xh['isf'] = 2; |
|
396
|
|
|
$this->_xh['isf_reason'] = "$name element following a {$this->_xh['vt']} element inside a single value"; |
|
397
|
|
|
|
|
398
|
|
|
return; |
|
399
|
|
|
} |
|
400
|
|
|
// create an empty array to hold child values, and push it onto appropriate stack |
|
401
|
|
|
$curVal = array( |
|
402
|
|
|
'values' => array(), |
|
403
|
|
|
'type' => $name, |
|
404
|
|
|
); |
|
405
|
|
|
// check for out-of-band information to rebuild php objs and, in case it is found, save it |
|
406
|
707 |
|
if (@isset($attrs['PHP_CLASS'])) { |
|
407
|
707 |
|
$curVal['php_class'] = $attrs['PHP_CLASS']; |
|
408
|
239 |
|
} |
|
409
|
|
|
$this->_xh['valuestack'][] = $curVal; |
|
410
|
707 |
|
$this->_xh['vt'] = 'data'; // be prepared for a data element next |
|
411
|
709 |
|
break; |
|
412
|
709 |
|
|
|
413
|
709 |
|
case 'DATA': |
|
414
|
709 |
|
if ($this->_xh['vt'] != 'data') { |
|
415
|
709 |
|
// two data elements inside a value: an error occurred! |
|
416
|
709 |
|
$this->_xh['isf'] = 2; |
|
417
|
708 |
|
$this->_xh['isf_reason'] = "found two data elements inside an array element"; |
|
418
|
708 |
|
|
|
419
|
708 |
|
return; |
|
420
|
685 |
|
} |
|
421
|
|
|
|
|
422
|
|
|
case 'METHODCALL': |
|
423
|
685 |
|
case 'METHODRESPONSE': |
|
424
|
594 |
|
// valid elements that add little to processing |
|
425
|
477 |
|
break; |
|
426
|
7 |
|
|
|
427
|
|
|
case 'PARAMS': |
|
428
|
|
|
$this->_xh['params'] = array(); |
|
429
|
7 |
|
break; |
|
430
|
7 |
|
|
|
431
|
472 |
|
case 'METHODNAME': |
|
432
|
|
|
case 'NAME': |
|
433
|
22 |
|
/// @todo we could check for 2 NAME elements inside a MEMBER element |
|
434
|
451 |
|
$this->_xh['ac'] = ''; |
|
435
|
|
|
break; |
|
436
|
|
|
|
|
437
|
|
|
case 'FAULT': |
|
438
|
|
|
$this->_xh['isf'] = 1; |
|
439
|
|
|
break; |
|
440
|
|
|
|
|
441
|
46 |
|
case 'MEMBER': |
|
442
|
46 |
|
// set member name to null, in case we do not find in the xml later on |
|
443
|
|
|
$this->_xh['valuestack'][count($this->_xh['valuestack']) - 1]['name'] = null; |
|
444
|
|
|
//$this->_xh['ac']=''; |
|
445
|
24 |
|
// Drop trough intentionally |
|
446
|
|
|
|
|
447
|
|
|
case 'PARAM': |
|
448
|
46 |
|
// clear value type, so we can check later if no value has been passed for this param/member |
|
449
|
|
|
$this->_xh['vt'] = null; |
|
450
|
408 |
|
break; |
|
451
|
|
|
|
|
452
|
|
|
case 'NIL': |
|
453
|
|
|
case 'EX:NIL': |
|
454
|
25 |
|
if ($this->current_parsing_options['xmlrpc_null_extension']) { |
|
455
|
|
|
if ($this->_xh['vt'] != 'value') { |
|
456
|
|
|
// two data elements inside a value: an error occurred! |
|
457
|
|
|
$this->_xh['isf'] = 2; |
|
458
|
|
|
$this->_xh['isf_reason'] = "$name element following a {$this->_xh['vt']} element inside a single value"; |
|
459
|
|
|
|
|
460
|
25 |
|
return; |
|
461
|
|
|
} |
|
462
|
|
|
// reset the accumulator - q: is this necessary at all here? we don't use it on _ee anyway for NILs |
|
463
|
|
|
$this->_xh['ac'] = ''; |
|
464
|
|
|
|
|
465
|
387 |
|
} else { |
|
466
|
|
|
$this->_xh['isf'] = 2; |
|
467
|
|
|
$this->_xh['isf_reason'] = 'Invalid NIL value received. Support for NIL can be enabled via \\PhpXmlRpc\\PhpXmlRpc::$xmlrpc_null_extension'; |
|
468
|
|
|
|
|
469
|
|
|
return; |
|
470
|
|
|
} |
|
471
|
387 |
|
break; |
|
472
|
|
|
|
|
473
|
|
|
default: |
|
474
|
685 |
|
// INVALID ELEMENT: RAISE ISF so that it is later recognized |
|
475
|
685 |
|
/// @todo feature creep = allow a callback instead |
|
476
|
708 |
|
$this->_xh['isf'] = 2; |
|
477
|
289 |
|
$this->_xh['isf_reason'] = "found not-xmlrpc xml element $name"; |
|
478
|
289 |
|
|
|
479
|
708 |
|
return; |
|
480
|
|
|
} |
|
481
|
|
|
|
|
482
|
289 |
|
// Save current element name to stack, to validate nesting |
|
483
|
268 |
|
$this->_xh['stack'][] = $name; |
|
484
|
268 |
|
|
|
485
|
|
|
/// @todo optimization creep: move this inside the big switch() above |
|
486
|
22 |
|
if ($name != 'VALUE') { |
|
487
|
|
|
$this->_xh['lv'] = 0; |
|
488
|
289 |
|
} |
|
489
|
708 |
|
} |
|
490
|
239 |
|
|
|
491
|
239 |
|
/** |
|
492
|
707 |
|
* xml parser handler function for close element tags. |
|
493
|
707 |
|
* @internal |
|
494
|
|
|
* |
|
495
|
398 |
|
* @param resource $parser |
|
496
|
398 |
|
* @param string $name |
|
497
|
398 |
|
* @param int $rebuildXmlrpcvals >1 for rebuilding xmlrpcvals, 0 for rebuilding php values, -1 for xmlrpc-extension compatibility |
|
498
|
398 |
|
* @return void |
|
499
|
22 |
|
* @throws \Exception this can happen if a callback function is set and it does throw (i.e. we do not catch exceptions) |
|
500
|
|
|
* |
|
501
|
398 |
|
* @todo optimization creep: throw when setting $this->_xh['isf'] > 1, to completely avoid further xml parsing |
|
502
|
707 |
|
* and remove the checking for $this->_xh['isf'] >= 2 everywhere |
|
503
|
|
|
*/ |
|
504
|
|
|
public function xmlrpc_ee($parser, $name, $rebuildXmlrpcvals = 1) |
|
505
|
684 |
|
{ |
|
506
|
684 |
|
if ($this->_xh['isf'] >= 2) { |
|
507
|
684 |
|
return; |
|
508
|
|
|
} |
|
509
|
|
|
|
|
510
|
|
|
// push this element name from stack |
|
511
|
684 |
|
// NB: if XML validates, correct opening/closing is guaranteed and we do not have to check for $name == $currElem. |
|
512
|
707 |
|
// we also checked for proper nesting at start of elements... |
|
513
|
562 |
|
$currElem = array_pop($this->_xh['stack']); |
|
|
|
|
|
|
514
|
562 |
|
|
|
515
|
706 |
|
switch ($name) { |
|
516
|
706 |
|
case 'VALUE': |
|
517
|
23 |
|
// If no scalar was inside <VALUE></VALUE>, it was a string value |
|
518
|
23 |
|
if ($this->_xh['vt'] == 'value') { |
|
519
|
23 |
|
$this->_xh['value'] = $this->_xh['ac']; |
|
520
|
23 |
|
$this->_xh['vt'] = Value::$xmlrpcString; |
|
521
|
23 |
|
} |
|
522
|
|
|
|
|
523
|
|
|
// in case there is charset conversion required, do it here, to catch both cases of string values |
|
524
|
706 |
|
if (isset($this->current_parsing_options['target_charset']) && $this->_xh['vt'] === Value::$xmlrpcString) { |
|
525
|
706 |
|
$this->_xh['value'] = mb_convert_encoding($this->_xh['value'], $this->current_parsing_options['target_charset'], 'UTF-8'); |
|
526
|
706 |
|
} |
|
527
|
705 |
|
|
|
528
|
706 |
|
if ($rebuildXmlrpcvals > 0) { |
|
529
|
|
|
// build the xml-rpc val out of the data received, and substitute it |
|
530
|
|
|
$temp = new Value($this->_xh['value'], $this->_xh['vt']); |
|
531
|
|
|
// in case we got info about underlying php class, save it in the object we're rebuilding |
|
532
|
705 |
|
if (isset($this->_xh['php_class'])) { |
|
533
|
|
|
$temp->_php_class = $this->_xh['php_class']; |
|
534
|
|
|
} |
|
535
|
710 |
|
$this->_xh['value'] = $temp; |
|
536
|
|
|
} elseif ($rebuildXmlrpcvals < 0) { |
|
537
|
|
|
if ($this->_xh['vt'] == Value::$xmlrpcDateTime) { |
|
538
|
|
|
$this->_xh['value'] = (object)array( |
|
539
|
|
|
'xmlrpc_type' => 'datetime', |
|
540
|
|
|
'scalar' => $this->_xh['value'], |
|
541
|
|
|
'timestamp' => \PhpXmlRpc\Helper\Date::iso8601Decode($this->_xh['value']) |
|
542
|
|
|
); |
|
543
|
27 |
|
} elseif ($this->_xh['vt'] == Value::$xmlrpcBase64) { |
|
544
|
|
|
$this->_xh['value'] = (object)array( |
|
545
|
27 |
|
'xmlrpc_type' => 'base64', |
|
546
|
27 |
|
'scalar' => $this->_xh['value'] |
|
547
|
|
|
); |
|
548
|
|
|
} |
|
549
|
|
|
} else { |
|
550
|
|
|
/// @todo this should handle php-serialized objects, since std deserializing is done |
|
551
|
|
|
/// by php_xmlrpc_decode, which we will not be calling... |
|
552
|
|
|
//if (isset($this->_xh['php_class'])) { |
|
553
|
|
|
//} |
|
554
|
|
|
} |
|
555
|
|
|
|
|
556
|
|
|
// check if we are inside an array or struct: |
|
557
|
|
|
// if value just built is inside an array, let's move it into array on the stack |
|
558
|
|
|
$vscount = count($this->_xh['valuestack']); |
|
559
|
|
|
if ($vscount && $this->_xh['valuestack'][$vscount - 1]['type'] == 'ARRAY') { |
|
560
|
|
|
$this->_xh['valuestack'][$vscount - 1]['values'][] = $this->_xh['value']; |
|
561
|
|
|
} |
|
562
|
|
|
break; |
|
563
|
|
|
|
|
564
|
|
|
case 'STRING': |
|
565
|
710 |
|
$this->_xh['vt'] = Value::$xmlrpcString; |
|
566
|
|
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
567
|
|
|
$this->_xh['value'] = $this->_xh['ac']; |
|
568
|
710 |
|
break; |
|
569
|
|
|
|
|
570
|
|
|
case 'BOOLEAN': |
|
571
|
710 |
|
$this->_xh['vt'] = Value::$xmlrpcBoolean; |
|
572
|
710 |
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
573
|
|
|
// We translate boolean 1 or 0 into PHP constants true or false. Strings 'true' and 'false' are accepted, |
|
574
|
|
|
// even though the spec never mentions them (see e.g. Blogger api docs) |
|
575
|
710 |
|
// NB: this simple checks helps a lot sanitizing input, i.e. no security problems around here |
|
576
|
|
|
// Note the non-strict type check: it will allow ' 1 ' |
|
577
|
|
|
/// @todo feature-creep: use a flexible regexp, the same as we do with int, double and datetime. |
|
578
|
|
|
/// Note that using a regexp would also make this test less sensitive to phpunit shenanigans, and |
|
579
|
|
|
/// to changes in the way php compares strings (since 8.0, leading and trailing newlines are |
|
580
|
|
|
/// accepted when deciding if a string numeric...) |
|
581
|
|
|
if ($this->_xh['ac'] == '1' || strcasecmp($this->_xh['ac'], 'true') === 0) { |
|
582
|
|
|
$this->_xh['value'] = true; |
|
583
|
|
|
} else { |
|
584
|
696 |
|
// log if receiving something strange, even though we set the value to false anyway |
|
585
|
|
|
/// @todo to be consistent with the other types, we should return a value outside the good-value domain, e.g. NULL |
|
586
|
|
|
if ($this->_xh['ac'] != '0' && strcasecmp($this->_xh['ac'], 'false') !== 0) { |
|
587
|
696 |
|
if (!$this->handleParsingError('invalid data received in BOOLEAN value: ' . |
|
588
|
696 |
|
$this->truncateValueForLog($this->_xh['ac']), __METHOD__)) { |
|
589
|
|
|
return; |
|
590
|
|
|
} |
|
591
|
|
|
} |
|
592
|
|
|
$this->_xh['value'] = false; |
|
593
|
|
|
} |
|
594
|
696 |
|
break; |
|
595
|
|
|
|
|
596
|
|
|
case 'EX:I8': |
|
597
|
|
|
$name = 'i8'; |
|
598
|
|
|
// fall through voluntarily |
|
599
|
|
|
case 'I4': |
|
600
|
|
|
case 'I8': |
|
601
|
|
|
case 'INT': |
|
602
|
|
|
// NB: we build the Value object with the original xml element name found, except for ex:i8. The |
|
603
|
|
|
// `Value::scalarTyp()` function will do some normalization of the data |
|
604
|
|
|
$this->_xh['vt'] = strtolower($name); |
|
605
|
|
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
606
|
|
|
if (!preg_match(PhpXmlRpc::$xmlrpc_int_format, $this->_xh['ac'])) { |
|
607
|
|
|
if (!$this->handleParsingError('non numeric data received in INT value: ' . |
|
608
|
|
|
$this->truncateValueForLog($this->_xh['ac']), __METHOD__)) { |
|
609
|
|
|
return; |
|
610
|
|
|
} |
|
611
|
|
|
/// @todo: find a better way of reporting an error value than this! Use NaN? |
|
612
|
|
|
$this->_xh['value'] = 'ERROR_NON_NUMERIC_FOUND'; |
|
613
|
|
|
} else { |
|
614
|
|
|
// it's ok, add it on |
|
615
|
|
|
$this->_xh['value'] = (int)$this->_xh['ac']; |
|
616
|
|
|
} |
|
617
|
711 |
|
break; |
|
618
|
|
|
|
|
619
|
|
|
case 'DOUBLE': |
|
620
|
|
|
$this->_xh['vt'] = Value::$xmlrpcDouble; |
|
621
|
|
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
622
|
|
|
if (!preg_match(PhpXmlRpc::$xmlrpc_double_format, $this->_xh['ac'])) { |
|
623
|
|
|
if (!$this->handleParsingError('non numeric data received in DOUBLE value: ' . |
|
624
|
|
|
$this->truncateValueForLog($this->_xh['ac']), __METHOD__)) { |
|
625
|
|
|
return; |
|
626
|
|
|
} |
|
627
|
|
|
|
|
628
|
|
|
$this->_xh['value'] = 'ERROR_NON_NUMERIC_FOUND'; |
|
629
|
|
|
} else { |
|
630
|
|
|
// it's ok, add it on |
|
631
|
|
|
$this->_xh['value'] = (double)$this->_xh['ac']; |
|
632
|
|
|
} |
|
633
|
|
|
break; |
|
634
|
711 |
|
|
|
635
|
711 |
|
case 'DATETIME.ISO8601': |
|
636
|
695 |
|
$this->_xh['vt'] = Value::$xmlrpcDateTime; |
|
637
|
|
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
638
|
|
|
if (!preg_match(PhpXmlRpc::$xmlrpc_datetime_format, $this->_xh['ac'])) { |
|
639
|
|
|
if (!$this->handleParsingError('invalid data received in DATETIME value: ' . |
|
640
|
|
|
$this->truncateValueForLog($this->_xh['ac']), __METHOD__)) { |
|
641
|
|
|
return; |
|
642
|
|
|
} |
|
643
|
|
|
} |
|
644
|
|
|
if ($this->current_parsing_options['xmlrpc_return_datetimes']) { |
|
645
|
|
|
try { |
|
646
|
529 |
|
$this->_xh['value'] = new \DateTime($this->_xh['ac']); |
|
647
|
|
|
|
|
648
|
529 |
|
// the default regex used to validate the date string a few lines above should make this case impossible, |
|
649
|
|
|
// but one never knows... |
|
650
|
529 |
|
} catch(\Exception $e) { |
|
651
|
|
|
// what to do? We can not guarantee that a valid date can be created. We return null... |
|
652
|
|
|
if (!$this->handleParsingError('invalid data received in DATETIME value. Error ' . |
|
653
|
|
|
$e->getMessage(), __METHOD__)) { |
|
654
|
|
|
return; |
|
655
|
|
|
} |
|
656
|
|
|
} |
|
657
|
|
|
} else { |
|
658
|
529 |
|
$this->_xh['value'] = $this->_xh['ac']; |
|
659
|
529 |
|
} |
|
660
|
|
|
break; |
|
661
|
24 |
|
|
|
662
|
|
|
case 'BASE64': |
|
663
|
|
|
$this->_xh['vt'] = Value::$xmlrpcBase64; |
|
664
|
|
|
$this->_xh['lv'] = 3; // indicate we've found a value |
|
665
|
506 |
|
if ($this->current_parsing_options['xmlrpc_reject_invalid_values']) { |
|
666
|
506 |
|
$v = base64_decode($this->_xh['ac'], true); |
|
667
|
4 |
|
if ($v === false) { |
|
668
|
|
|
$this->_xh['isf'] = 2; |
|
669
|
506 |
|
$this->_xh['isf_reason'] = 'Invalid data received in BASE64 value: '. $this->truncateValueForLog($this->_xh['ac']); |
|
670
|
4 |
|
return; |
|
671
|
|
|
} |
|
672
|
502 |
|
} else { |
|
673
|
|
|
$v = base64_decode($this->_xh['ac']); |
|
674
|
|
|
if ($v === '' && $this->_xh['ac'] !== '') { |
|
675
|
|
|
// only the empty string should decode to the empty string |
|
676
|
506 |
|
$this->getLogger()->error('XML-RPC: ' . __METHOD__ . ': invalid data received in BASE64 value: ' . |
|
677
|
499 |
|
$this->truncateValueForLog($this->_xh['ac'])); |
|
678
|
|
|
} |
|
679
|
|
|
} |
|
680
|
506 |
|
$this->_xh['value'] = $v; |
|
681
|
|
|
break; |
|
682
|
|
|
|
|
683
|
|
|
case 'NAME': |
|
684
|
|
|
$this->_xh['valuestack'][count($this->_xh['valuestack']) - 1]['name'] = $this->_xh['ac']; |
|
685
|
|
|
break; |
|
686
|
|
|
|
|
687
|
|
|
case 'MEMBER': |
|
688
|
|
|
// add to array in the stack the last element built, unless no VALUE or no NAME were found |
|
689
|
|
|
if ($this->_xh['vt']) { |
|
690
|
|
|
$vscount = count($this->_xh['valuestack']); |
|
691
|
|
|
if ($this->_xh['valuestack'][$vscount - 1]['name'] === null) { |
|
692
|
|
|
if (!$this->handleParsingError('missing NAME inside STRUCT in received xml', __METHOD__)) { |
|
693
|
|
|
return; |
|
694
|
|
|
} |
|
695
|
|
|
$this->_xh['valuestack'][$vscount - 1]['name'] = ''; |
|
696
|
82 |
|
} |
|
697
|
|
|
$this->_xh['valuestack'][$vscount - 1]['values'][$this->_xh['valuestack'][$vscount - 1]['name']] = $this->_xh['value']; |
|
698
|
|
|
} else { |
|
699
|
|
|
if (!$this->handleParsingError('missing VALUE inside STRUCT in received xml', __METHOD__)) { |
|
700
|
82 |
|
return; |
|
701
|
|
|
} |
|
702
|
82 |
|
} |
|
703
|
|
|
break; |
|
704
|
82 |
|
|
|
705
|
|
|
case 'DATA': |
|
706
|
|
|
$this->_xh['vt'] = null; // reset this to check for 2 data elements in a row - even if they're empty |
|
707
|
|
|
break; |
|
708
|
|
|
|
|
709
|
|
|
case 'STRUCT': |
|
710
|
|
|
case 'ARRAY': |
|
711
|
|
|
// fetch out of stack array of values, and promote it to current value |
|
712
|
82 |
|
$currVal = array_pop($this->_xh['valuestack']); |
|
713
|
82 |
|
$this->_xh['value'] = $currVal['values']; |
|
714
|
|
|
$this->_xh['vt'] = strtolower($name); |
|
715
|
78 |
|
if (isset($currVal['php_class'])) { |
|
716
|
|
|
$this->_xh['php_class'] = $currVal['php_class']; |
|
717
|
|
|
} |
|
718
|
5 |
|
break; |
|
719
|
|
|
|
|
720
|
|
|
case 'PARAM': |
|
721
|
|
|
// add to array of params the current value, unless no VALUE was found |
|
722
|
|
|
/// @todo should we also check if there were two VALUE inside the PARAM? |
|
723
|
|
|
if ($this->_xh['vt']) { |
|
724
|
|
|
$this->_xh['params'][] = $this->_xh['value']; |
|
725
|
|
|
$this->_xh['pt'][] = $this->_xh['vt']; |
|
726
|
|
|
} else { |
|
727
|
|
|
if (!$this->handleParsingError('missing VALUE inside PARAM in received xml', __METHOD__)) { |
|
728
|
|
|
return; |
|
729
|
|
|
} |
|
730
|
|
|
} |
|
731
|
|
|
break; |
|
732
|
|
|
|
|
733
|
|
|
case 'METHODNAME': |
|
734
|
|
|
if (!preg_match(PhpXmlRpc::$xmlrpc_methodname_format, $this->_xh['ac'])) { |
|
735
|
|
|
if (!$this->handleParsingError('invalid data received in METHODNAME: '. |
|
736
|
|
|
$this->truncateValueForLog($this->_xh['ac']), __METHOD__)) { |
|
737
|
|
|
return; |
|
738
|
|
|
} |
|
739
|
|
|
} |
|
740
|
|
|
$methodName = trim($this->_xh['ac']); |
|
741
|
|
|
$this->_xh['method'] = $methodName; |
|
742
|
|
|
// we allow the callback to f.e. give us back a mangled method name by manipulating $this |
|
743
|
|
|
if (isset($this->current_parsing_options['methodname_callback'])) { |
|
744
|
|
|
call_user_func($this->current_parsing_options['methodname_callback'], $methodName, $this, $parser); |
|
745
|
|
|
} |
|
746
|
|
|
break; |
|
747
|
|
|
|
|
748
|
|
|
case 'NIL': |
|
749
|
|
|
case 'EX:NIL': |
|
750
|
|
|
// NB: if NIL support is not enabled, parsing stops at element start. So this If is redundant |
|
751
|
|
|
//if ($this->current_parsing_options['xmlrpc_null_extension']) { |
|
752
|
|
|
$this->_xh['vt'] = 'null'; |
|
753
|
|
|
$this->_xh['value'] = null; |
|
754
|
|
|
$this->_xh['lv'] = 3; |
|
755
|
|
|
//} |
|
756
|
|
|
break; |
|
757
|
|
|
|
|
758
|
|
|
/// @todo add extra checking: |
|
759
|
|
|
/// - FAULT should contain a single struct with the 2 expected members (check their name and type) |
|
760
|
|
|
case 'PARAMS': |
|
761
|
|
|
case 'FAULT': |
|
762
|
|
|
break; |
|
763
|
|
|
|
|
764
|
|
|
case 'METHODCALL': |
|
765
|
|
|
/// @todo should we allow to accept this case via a call to handleParsingError ? |
|
766
|
|
|
if ($this->_xh['method'] === false) { |
|
767
|
|
|
$this->_xh['isf'] = 2; |
|
768
|
|
|
$this->_xh['isf_reason'] = "missing METHODNAME element inside METHODCALL"; |
|
769
|
|
|
} |
|
770
|
|
|
break; |
|
771
|
|
|
|
|
772
|
|
|
case 'METHODRESPONSE': |
|
773
|
|
|
/// @todo should we allow to accept these cases via a call to handleParsingError ? |
|
774
|
|
|
if ($this->_xh['isf'] != 1 && $this->_xh['params'] === false) { |
|
775
|
|
|
$this->_xh['isf'] = 2; |
|
776
|
|
|
$this->_xh['isf_reason'] = "missing both FAULT and PARAMS elements inside METHODRESPONSE"; |
|
777
|
|
|
} elseif ($this->_xh['isf'] == 0 && count($this->_xh['params']) !== 1) { |
|
778
|
|
|
$this->_xh['isf'] = 2; |
|
779
|
|
|
$this->_xh['isf_reason'] = "PARAMS element inside METHODRESPONSE should have exactly 1 PARAM"; |
|
780
|
|
|
} elseif ($this->_xh['isf'] == 1 && $this->_xh['params'] !== false) { |
|
781
|
|
|
$this->_xh['isf'] = 2; |
|
782
|
|
|
$this->_xh['isf_reason'] = "both FAULT and PARAMS elements found inside METHODRESPONSE"; |
|
783
|
|
|
} |
|
784
|
|
|
break; |
|
785
|
|
|
|
|
786
|
|
|
default: |
|
787
|
|
|
// End of INVALID ELEMENT |
|
788
|
|
|
// Should we add an assert here for unreachable code? When an invalid element is found in xmlrpc_se, |
|
789
|
|
|
// $this->_xh['isf'] is set to 2... |
|
790
|
|
|
break; |
|
791
|
|
|
} |
|
792
|
|
|
} |
|
793
|
|
|
|
|
794
|
|
|
/** |
|
795
|
|
|
* Used in decoding xml-rpc requests/responses without rebuilding xml-rpc Values. |
|
796
|
|
|
* @internal |
|
797
|
|
|
* |
|
798
|
|
|
* @param resource $parser |
|
799
|
|
|
* @param string $name |
|
800
|
|
|
* @return void |
|
801
|
|
|
*/ |
|
802
|
|
|
public function xmlrpc_ee_fast($parser, $name) |
|
803
|
|
|
{ |
|
804
|
|
|
$this->xmlrpc_ee($parser, $name, 0); |
|
805
|
|
|
} |
|
806
|
|
|
|
|
807
|
|
|
/** |
|
808
|
|
|
* Used in decoding xml-rpc requests/responses while building xmlrpc-extension Values (plain php for all but base64 and datetime). |
|
809
|
|
|
* @internal |
|
810
|
|
|
* |
|
811
|
|
|
* @param resource $parser |
|
812
|
|
|
* @param string $name |
|
813
|
|
|
* @return void |
|
814
|
|
|
*/ |
|
815
|
|
|
public function xmlrpc_ee_epi($parser, $name) |
|
816
|
|
|
{ |
|
817
|
|
|
$this->xmlrpc_ee($parser, $name, -1); |
|
818
|
|
|
} |
|
819
|
|
|
|
|
820
|
|
|
/** |
|
821
|
|
|
* xml parser handler function for character data. |
|
822
|
|
|
* @internal |
|
823
|
|
|
* |
|
824
|
|
|
* @param resource $parser |
|
825
|
|
|
* @param string $data |
|
826
|
|
|
* @return void |
|
827
|
|
|
*/ |
|
828
|
|
|
public function xmlrpc_cd($parser, $data) |
|
829
|
|
|
{ |
|
830
|
|
|
// skip processing if xml fault already detected |
|
831
|
|
|
if ($this->_xh['isf'] >= 2) { |
|
832
|
|
|
return; |
|
833
|
|
|
} |
|
834
|
|
|
|
|
835
|
|
|
// "lookforvalue == 3" means that we've found an entire value and should discard any further character data |
|
836
|
|
|
if ($this->_xh['lv'] != 3) { |
|
837
|
|
|
$this->_xh['ac'] .= $data; |
|
838
|
|
|
} |
|
839
|
|
|
} |
|
840
|
|
|
|
|
841
|
|
|
/** |
|
842
|
|
|
* xml parser handler function for 'other stuff', i.e. not char data or element start/end tag. |
|
843
|
|
|
* In fact, it only gets called on unknown entities... |
|
844
|
|
|
* @internal |
|
845
|
|
|
* |
|
846
|
|
|
* @param $parser |
|
847
|
|
|
* @param string data |
|
|
|
|
|
|
848
|
|
|
* @return void |
|
849
|
|
|
*/ |
|
850
|
|
|
public function xmlrpc_dh($parser, $data) |
|
851
|
|
|
{ |
|
852
|
|
|
// skip processing if xml fault already detected |
|
853
|
|
|
if ($this->_xh['isf'] >= 2) { |
|
854
|
|
|
return; |
|
855
|
|
|
} |
|
856
|
|
|
|
|
857
|
|
|
if (substr($data, 0, 1) == '&' && substr($data, -1, 1) == ';') { |
|
858
|
|
|
$this->_xh['ac'] .= $data; |
|
859
|
|
|
} |
|
860
|
|
|
} |
|
861
|
|
|
|
|
862
|
|
|
/** |
|
863
|
|
|
* xml charset encoding guessing helper function. |
|
864
|
|
|
* Tries to determine the charset encoding of an XML chunk received over HTTP. |
|
865
|
|
|
* |
|
866
|
|
|
* NB: according to the spec (RFC 3023), if text/xml content-type is received over HTTP without a content-type, |
|
867
|
|
|
* we SHOULD assume it is strictly US-ASCII. But we try to be more tolerant of non-conforming (legacy?) clients/servers, |
|
868
|
|
|
* which will be most probably using UTF-8 anyway... |
|
869
|
|
|
* In order of importance checks: |
|
870
|
|
|
* 1. http headers |
|
871
|
|
|
* 2. BOM |
|
872
|
|
|
* 3. XML declaration |
|
873
|
|
|
* 4. guesses using mb_detect_encoding() |
|
874
|
|
|
* |
|
875
|
|
|
* @param string $httpHeader the http Content-type header |
|
876
|
|
|
* @param string $xmlChunk xml content buffer |
|
877
|
|
|
* @param string $encodingPrefs comma separated list of character encodings to be used as default (when mb extension is enabled). |
|
878
|
|
|
* This can also be set globally using PhpXmlRpc::$xmlrpc_detectencodings |
|
879
|
|
|
* @return string the encoding determined. Null if it can't be determined and mbstring is enabled, |
|
880
|
|
|
* PhpXmlRpc::$xmlrpc_defencoding if it can't be determined and mbstring is not enabled |
|
881
|
|
|
* |
|
882
|
|
|
* @todo as of 2023, the relevant RFC for XML Media Types is now 7303, and for HTTP it is 9110. Check if the order of |
|
883
|
|
|
* precedence implemented here is still correct |
|
884
|
|
|
* @todo explore usage of mb_http_input(): does it detect http headers + post data? if so, use it instead of hand-detection!!! |
|
885
|
|
|
* @todo feature-creep make it possible to pass in options overriding usage of PhpXmlRpc static variables, to make |
|
886
|
|
|
* the method independent of global state |
|
887
|
|
|
*/ |
|
888
|
|
|
public static function guessEncoding($httpHeader = '', $xmlChunk = '', $encodingPrefs = null) |
|
889
|
|
|
{ |
|
890
|
|
|
// discussion: see http://www.yale.edu/pclt/encoding/ |
|
891
|
|
|
// 1 - test if encoding is specified in HTTP HEADERS |
|
892
|
|
|
|
|
893
|
|
|
// Details: |
|
894
|
|
|
// LWS: (\13\10)?( |\t)+ |
|
895
|
|
|
// token: (any char but excluded stuff)+ |
|
896
|
|
|
// quoted string: " (any char but double quotes and control chars)* " |
|
897
|
|
|
// header: Content-type = ...; charset=value(; ...)* |
|
898
|
|
|
// where value is of type token, no LWS allowed between 'charset' and value |
|
899
|
|
|
// Note: we do not check for invalid chars in VALUE: |
|
900
|
|
|
// this had better be done using pure ereg as below |
|
901
|
|
|
// Note 2: we might be removing whitespace/tabs that ought to be left in if |
|
902
|
|
|
// the received charset is a quoted string. But nobody uses such charset names... |
|
903
|
|
|
|
|
904
|
|
|
/// @todo this test will pass if ANY header has charset specification, not only Content-Type. Fix it? |
|
905
|
|
|
$matches = array(); |
|
906
|
|
|
if (preg_match('/;\s*charset\s*=([^;]+)/i', $httpHeader, $matches)) { |
|
907
|
|
|
return strtoupper(trim($matches[1], " \t\"")); |
|
908
|
|
|
} |
|
909
|
|
|
|
|
910
|
|
|
// 2 - scan the first bytes of the data for a UTF-16 (or other) BOM pattern |
|
911
|
|
|
// (source: http://www.w3.org/TR/2000/REC-xml-20001006) |
|
912
|
|
|
// NOTE: actually, according to the spec, even if we find the BOM and determine |
|
913
|
|
|
// an encoding, we should check if there is an encoding specified |
|
914
|
|
|
// in the xml declaration, and verify if they match. |
|
915
|
|
|
/// @todo implement check as described above? |
|
916
|
|
|
/// @todo implement check for first bytes of string even without a BOM? (It sure looks harder than for cases WITH a BOM) |
|
917
|
|
|
if (preg_match('/^(?:\x00\x00\xFE\xFF|\xFF\xFE\x00\x00|\x00\x00\xFF\xFE|\xFE\xFF\x00\x00)/', $xmlChunk)) { |
|
918
|
|
|
return 'UCS-4'; |
|
919
|
|
|
} elseif (preg_match('/^(?:\xFE\xFF|\xFF\xFE)/', $xmlChunk)) { |
|
920
|
|
|
return 'UTF-16'; |
|
921
|
|
|
} elseif (preg_match('/^(?:\xEF\xBB\xBF)/', $xmlChunk)) { |
|
922
|
|
|
return 'UTF-8'; |
|
923
|
|
|
} |
|
924
|
|
|
|
|
925
|
|
|
// 3 - test if encoding is specified in the xml declaration |
|
926
|
|
|
/// @todo this regexp will fail if $xmlChunk uses UTF-32/UCS-4, and most likely UTF-16/UCS-2 as well. In that |
|
927
|
|
|
/// case we leave the guesswork up to mbstring - which seems to be able to detect it, starting with php 5.6. |
|
928
|
|
|
/// For lower versions, we could attempt usage of mb_ereg... |
|
929
|
|
|
// Details: |
|
930
|
|
|
// SPACE: (#x20 | #x9 | #xD | #xA)+ === [ \x9\xD\xA]+ |
|
931
|
|
|
// EQ: SPACE?=SPACE? === [ \x9\xD\xA]*=[ \x9\xD\xA]* |
|
932
|
|
|
// We could be stricter on version number: VersionNum ::= '1.' [0-9]+ |
|
933
|
|
|
if (preg_match('/^<\?xml\s+version\s*=\s*' . "((?:\"[a-zA-Z0-9_.:-]+\")|(?:'[a-zA-Z0-9_.:-]+'))" . |
|
934
|
|
|
'\s+encoding\s*=\s*' . "((?:\"[A-Za-z][A-Za-z0-9._-]*\")|(?:'[A-Za-z][A-Za-z0-9._-]*'))/", |
|
935
|
|
|
$xmlChunk, $matches)) { |
|
936
|
|
|
return strtoupper(substr($matches[2], 1, -1)); |
|
937
|
|
|
} |
|
938
|
|
|
|
|
939
|
|
|
// 4 - if mbstring is available, let it do the guesswork |
|
940
|
|
|
if (function_exists('mb_detect_encoding')) { |
|
941
|
|
|
if ($encodingPrefs == null && PhpXmlRpc::$xmlrpc_detectencodings != null) { |
|
|
|
|
|
|
942
|
|
|
$encodingPrefs = PhpXmlRpc::$xmlrpc_detectencodings; |
|
943
|
|
|
} |
|
944
|
|
|
if ($encodingPrefs) { |
|
945
|
|
|
$enc = mb_detect_encoding($xmlChunk, $encodingPrefs); |
|
946
|
|
|
} else { |
|
947
|
|
|
$enc = mb_detect_encoding($xmlChunk); |
|
948
|
|
|
} |
|
949
|
|
|
// NB: mb_detect likes to call it ascii, xml parser likes to call it US_ASCII... |
|
950
|
|
|
// IANA also likes better US-ASCII, so go with it |
|
951
|
|
|
if ($enc == 'ASCII') { |
|
952
|
|
|
$enc = 'US-' . $enc; |
|
953
|
|
|
} |
|
954
|
|
|
|
|
955
|
|
|
return $enc; |
|
956
|
|
|
} else { |
|
957
|
|
|
// No encoding specified: assume it is iso-8859-1, as per HTTP1.1? |
|
958
|
|
|
// Both RFC 2616 (HTTP 1.1) and RFC 1945 (HTTP 1.0) clearly state that for text/xxx content types |
|
959
|
|
|
// this should be the standard. And we should be getting text/xml as request and response. |
|
960
|
|
|
// BUT we have to be backward compatible with the lib, which always used UTF-8 as default. Moreover, |
|
961
|
|
|
// RFC 7231, which obsoletes the two RFC mentioned above, has changed the rules. It says: |
|
962
|
|
|
// "The default charset of ISO-8859-1 for text media types has been removed; the default is now whatever |
|
963
|
|
|
// the media type definition says." |
|
964
|
|
|
return PhpXmlRpc::$xmlrpc_defencoding; |
|
965
|
|
|
} |
|
966
|
|
|
} |
|
967
|
|
|
|
|
968
|
|
|
/** |
|
969
|
|
|
* Helper function: checks if an xml chunk has a charset declaration (BOM or in the xml declaration). |
|
970
|
|
|
* |
|
971
|
|
|
* @param string $xmlChunk |
|
972
|
|
|
* @return bool |
|
973
|
|
|
* |
|
974
|
|
|
* @todo rename to hasEncodingDeclaration |
|
975
|
|
|
*/ |
|
976
|
|
|
public static function hasEncoding($xmlChunk) |
|
977
|
|
|
{ |
|
978
|
|
|
// scan the first bytes of the data for a UTF-16 (or other) BOM pattern |
|
979
|
|
|
// (source: http://www.w3.org/TR/2000/REC-xml-20001006) |
|
980
|
|
|
if (preg_match('/^(?:\x00\x00\xFE\xFF|\xFF\xFE\x00\x00|\x00\x00\xFF\xFE|\xFE\xFF\x00\x00)/', $xmlChunk)) { |
|
981
|
|
|
return true; |
|
982
|
|
|
} elseif (preg_match('/^(?:\xFE\xFF|\xFF\xFE)/', $xmlChunk)) { |
|
983
|
|
|
return true; |
|
984
|
|
|
} elseif (preg_match('/^(?:\xEF\xBB\xBF)/', $xmlChunk)) { |
|
985
|
|
|
return true; |
|
986
|
|
|
} |
|
987
|
|
|
|
|
988
|
|
|
// test if encoding is specified in the xml declaration |
|
989
|
|
|
// Details: |
|
990
|
|
|
// SPACE: (#x20 | #x9 | #xD | #xA)+ === [ \x9\xD\xA]+ |
|
991
|
|
|
// EQ: SPACE?=SPACE? === [ \x9\xD\xA]*=[ \x9\xD\xA]* |
|
992
|
|
|
// We could be stricter on version number: VersionNum ::= '1.' [0-9]+ |
|
993
|
|
|
if (preg_match('/^<\?xml\s+version\s*=\s*' . "((?:\"[a-zA-Z0-9_.:-]+\")|(?:'[a-zA-Z0-9_.:-]+'))" . |
|
994
|
|
|
'\s+encoding\s*=\s*' . "((?:\"[A-Za-z][A-Za-z0-9._-]*\")|(?:'[A-Za-z][A-Za-z0-9._-]*'))/", |
|
995
|
|
|
$xmlChunk)) { |
|
996
|
|
|
return true; |
|
997
|
|
|
} |
|
998
|
|
|
|
|
999
|
|
|
return false; |
|
1000
|
|
|
} |
|
1001
|
|
|
|
|
1002
|
|
|
/** |
|
1003
|
|
|
* @param string $message |
|
1004
|
|
|
* @param string $method method/file/line info |
|
1005
|
|
|
* @return bool false if the caller has to stop parsing |
|
1006
|
|
|
*/ |
|
1007
|
|
|
protected function handleParsingError($message, $method = '') |
|
1008
|
|
|
{ |
|
1009
|
|
|
if ($this->current_parsing_options['xmlrpc_reject_invalid_values']) { |
|
1010
|
|
|
$this->_xh['isf'] = 2; |
|
1011
|
|
|
$this->_xh['isf_reason'] = ucfirst($message); |
|
1012
|
|
|
return false; |
|
1013
|
|
|
} else { |
|
1014
|
|
|
$this->getLogger()->error('XML-RPC: ' . ($method != '' ? $method . ': ' : '') . $message); |
|
1015
|
|
|
return true; |
|
1016
|
|
|
} |
|
1017
|
|
|
} |
|
1018
|
|
|
|
|
1019
|
|
|
/** |
|
1020
|
|
|
* Truncates unsafe data |
|
1021
|
|
|
* @param string $data |
|
1022
|
|
|
* @return string |
|
1023
|
|
|
*/ |
|
1024
|
|
|
protected function truncateValueForLog($data) |
|
1025
|
|
|
{ |
|
1026
|
|
|
if (strlen($data) > $this->maxLogValueLength) { |
|
1027
|
|
|
return substr($data, 0, $this->maxLogValueLength - 3) . '...'; |
|
1028
|
|
|
} |
|
1029
|
|
|
|
|
1030
|
|
|
return $data; |
|
1031
|
|
|
} |
|
1032
|
|
|
|
|
1033
|
|
|
// *** BC layer *** |
|
1034
|
|
|
|
|
1035
|
|
|
/** |
|
1036
|
|
|
* xml parser handler function for opening element tags. |
|
1037
|
|
|
* Used in decoding xml chunks that might represent single xml-rpc values as well as requests, responses. |
|
1038
|
|
|
* @deprecated |
|
1039
|
|
|
* |
|
1040
|
|
|
* @param resource $parser |
|
1041
|
|
|
* @param $name |
|
1042
|
|
|
* @param $attrs |
|
1043
|
|
|
* @return void |
|
1044
|
|
|
*/ |
|
1045
|
|
|
public function xmlrpc_se_any($parser, $name, $attrs) |
|
1046
|
|
|
{ |
|
1047
|
|
|
// this will be spamming the log if this method is in use... |
|
1048
|
|
|
$this->logDeprecation('Method ' . __METHOD__ . ' is deprecated'); |
|
1049
|
|
|
|
|
1050
|
|
|
$this->xmlrpc_se($parser, $name, $attrs, true); |
|
1051
|
|
|
} |
|
1052
|
|
|
|
|
1053
|
|
|
public function &__get($name) |
|
1054
|
|
|
{ |
|
1055
|
|
|
switch ($name) { |
|
1056
|
|
|
case '_xh': |
|
1057
|
|
|
case 'xmlrpc_valid_parents': |
|
1058
|
|
|
$this->logDeprecation('Getting property XMLParser::' . $name . ' is deprecated'); |
|
1059
|
|
|
return $this->$name; |
|
1060
|
|
|
default: |
|
1061
|
|
|
/// @todo throw instead? There are very few other places where the lib trigger errors which can potentially reach stdout... |
|
1062
|
|
|
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1); |
|
1063
|
|
|
trigger_error('Undefined property via __get(): ' . $name . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'], E_USER_WARNING); |
|
1064
|
|
|
$result = null; |
|
1065
|
|
|
return $result; |
|
1066
|
|
|
} |
|
1067
|
|
|
} |
|
1068
|
|
|
|
|
1069
|
|
|
public function __set($name, $value) |
|
1070
|
|
|
{ |
|
1071
|
|
|
switch ($name) { |
|
1072
|
|
|
// this should only ever be called by subclasses which overtook `parse()` |
|
1073
|
|
|
case 'accept': |
|
1074
|
|
|
$this->logDeprecation('Setting property XMLParser::' . $name . ' is deprecated'); |
|
1075
|
|
|
$this->current_parsing_options['accept'] = $value; |
|
1076
|
|
|
break; |
|
1077
|
|
|
case '_xh': |
|
1078
|
|
|
case 'xmlrpc_valid_parents': |
|
1079
|
|
|
$this->logDeprecation('Setting property XMLParser::' . $name . ' is deprecated'); |
|
1080
|
|
|
$this->$name = $value; |
|
1081
|
|
|
break; |
|
1082
|
|
|
default: |
|
1083
|
|
|
/// @todo throw instead? There are very few other places where the lib trigger errors which can potentially reach stdout... |
|
1084
|
|
|
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1); |
|
1085
|
|
|
trigger_error('Undefined property via __set(): ' . $name . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'], E_USER_WARNING); |
|
1086
|
|
|
} |
|
1087
|
|
|
} |
|
1088
|
|
|
|
|
1089
|
|
|
public function __isset($name) |
|
1090
|
|
|
{ |
|
1091
|
|
|
switch ($name) { |
|
1092
|
|
|
case 'accept': |
|
1093
|
|
|
$this->logDeprecation('Checking property XMLParser::' . $name . ' is deprecated'); |
|
1094
|
|
|
return isset($this->current_parsing_options['accept']); |
|
1095
|
|
|
case '_xh': |
|
1096
|
|
|
case 'xmlrpc_valid_parents': |
|
1097
|
|
|
$this->logDeprecation('Checking property XMLParser::' . $name . ' is deprecated'); |
|
1098
|
|
|
return isset($this->$name); |
|
1099
|
|
|
default: |
|
1100
|
|
|
return false; |
|
1101
|
|
|
} |
|
1102
|
|
|
} |
|
1103
|
|
|
|
|
1104
|
|
|
public function __unset($name) |
|
1105
|
|
|
{ |
|
1106
|
|
|
switch ($name) { |
|
1107
|
|
|
// q: does this make sense at all? |
|
1108
|
|
|
case 'accept': |
|
1109
|
|
|
$this->logDeprecation('Unsetting property XMLParser::' . $name . ' is deprecated'); |
|
1110
|
|
|
unset($this->current_parsing_options['accept']); |
|
1111
|
|
|
break; |
|
1112
|
|
|
case '_xh': |
|
1113
|
|
|
case 'xmlrpc_valid_parents': |
|
1114
|
|
|
$this->logDeprecation('Unsetting property XMLParser::' . $name . ' is deprecated'); |
|
1115
|
|
|
unset($this->$name); |
|
1116
|
|
|
break; |
|
1117
|
|
|
default: |
|
1118
|
|
|
/// @todo throw instead? There are very few other places where the lib trigger errors which can potentially reach stdout... |
|
1119
|
|
|
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1); |
|
1120
|
|
|
trigger_error('Undefined property via __unset(): ' . $name . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'], E_USER_WARNING); |
|
1121
|
|
|
} |
|
1122
|
|
|
} |
|
1123
|
|
|
} |
|
1124
|
|
|
|
gggeek /
phpxmlrpc
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