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<?php
/**
* *** BEGIN LICENSE BLOCK *****
*
* This file is part of FirePHP (http://www.firephp.org/).
*
* Software License Agreement (New BSD License)
*
* Copyright (c) 2006-2008, Christoph Dorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of Christoph Dorn nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK *****
*
* @copyright Copyright (C) 2007-2008 Christoph Dorn
* @author Christoph Dorn <christoph@christophdorn.com>
* @license http://www.opensource.org/licenses/bsd-license.php
* @package FirePHP
*/
/**
* Sends the given data to the FirePHP Firefox Extension.
* The data can be displayed in the Firebug Console or in the
* "Server" request tab.
*
* For more information see: http://www.firephp.org/
*
* @copyright Copyright (C) 2007-2008 Christoph Dorn
* @author Christoph Dorn <christoph@christophdorn.com>
* @license http://www.opensource.org/licenses/bsd-license.php
* @package FirePHP
*/
class FirePHP {
/**
* FirePHP version
*
* @var string
*/
const VERSION = '0.2.0';
/**
* Firebug LOG level
*
* Logs a message to firebug console.
*
* @var string
*/
const LOG = 'LOG';
/**
* Firebug INFO level
*
* Logs a message to firebug console and displays an info icon before the message.
*
* @var string
*/
const INFO = 'INFO';
/**
* Firebug WARN level
*
* Logs a message to firebug console, displays an warning icon before the message and colors the line turquoise.
*
* @var string
*/
const WARN = 'WARN';
/**
* Firebug ERROR level
*
* Logs a message to firebug console, displays an error icon before the message and colors the line yellow. Also increments the firebug error count.
*
* @var string
*/
const ERROR = 'ERROR';
/**
* Dumps a variable to firebug's server panel
*
* @var string
*/
const DUMP = 'DUMP';
/**
* Displays a stack trace in firebug console
*
* @var string
*/
const TRACE = 'TRACE';
/**
* Displays an exception in firebug console
*
* Increments the firebug error count.
*
* @var string
*/
const EXCEPTION = 'EXCEPTION';
/**
* Displays an table in firebug console
*
* @var string
*/
const TABLE = 'TABLE';
/**
* Starts a group in firebug console
*
* @var string
*/
const GROUP_START = 'GROUP_START';
/**
* Ends a group in firebug console
*
* @var string
*/
const GROUP_END = 'GROUP_END';
/**
* Singleton instance of FirePHP
*
* @var FirePHP
*/
protected static $instance = null;
/**
* Wildfire protocol message index
*
* @var int
*/
protected $messageIndex = 1;
/**
* Options for the library
*
* @var array
*/
protected $options = array();
/**
* Filters used to exclude object members when encoding
*
* @var array
*/
protected $objectFilters = array();
/**
* A stack of objects used to detect recursion during object encoding
*
* @var object
*/
protected $objectStack = array();
/**
* Flag to enable/disable logging
*
* @var boolean
*/
protected $enabled = true;
/**
* The object constructor
*/
function __construct() {
$this->options['maxObjectDepth'] = 10;
$this->options['maxArrayDepth'] = 20;
$this->options['useNativeJsonEncode'] = true;
$this->options['includeLineNumbers'] = true;
}
/**
* When the object gets serialized only include specific object members.
*
* @return array
*/
public function __sleep() {
return array('options','objectFilters','enabled');
}
/**
* Gets singleton instance of FirePHP
*
* @param boolean $AutoCreate
* @return FirePHP
*/
public static function getInstance($AutoCreate=false) {
if($AutoCreate===true && !self::$instance) {
self::init();
}
return self::$instance;
}
/**
* Creates FirePHP object and stores it for singleton access
*
* @return FirePHP
*/
public static function init() {
return self::$instance = new self();
}
/**
* Enable and disable logging to Firebug
*
* @param boolean $Enabled TRUE to enable, FALSE to disable
* @return void
*/
public function setEnabled($Enabled) {
$this->enabled = $Enabled;
}
/**
* Check if logging is enabled
*
* @return boolean TRUE if enabled
*/
public function getEnabled() {
return $this->enabled;
}
/**
* Specify a filter to be used when encoding an object
*
* Filters are used to exclude object members.
*
* @param string $Class The class name of the object
* @param array $Filter An array or members to exclude
* @return void
*/
public function setObjectFilter($Class, $Filter) {
$this->objectFilters[$Class] = $Filter;
}
/**
* Set some options for the library
*
* Options:
* - maxObjectDepth: The maximum depth to traverse objects (default: 10)
* - maxArrayDepth: The maximum depth to traverse arrays (default: 20)
* - useNativeJsonEncode: If true will use json_encode() (default: true)
* - includeLineNumbers: If true will include line numbers and filenames (default: true)
*
* @param array $Options The options to be set
* @return void
*/
public function setOptions($Options) {
$this->options = array_merge($this->options,$Options);
}
/**
* Register FirePHP as your error handler
*
* Will throw exceptions for each php error.
*/
public function registerErrorHandler()
{
//NOTE: The following errors will not be caught by this error handler:
// E_ERROR, E_PARSE, E_CORE_ERROR,
// E_CORE_WARNING, E_COMPILE_ERROR,
// E_COMPILE_WARNING, E_STRICT
set_error_handler(array($this,'errorHandler'));
}
/**
* FirePHP's error handler
*
* Throws exception for each php error that will occur.
*
* @param int $errno
* @param string $errstr
* @param string $errfile
* @param int $errline
* @param array $errcontext
*/
public function errorHandler($errno, $errstr, $errfile, $errline, $errcontext)
{
// Don't throw exception if error reporting is switched off
if (error_reporting() == 0) {
return;
}
// Only throw exceptions for errors we are asking for
if (error_reporting() & $errno) {
throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
}
/**
* Register FirePHP as your exception handler
*/
public function registerExceptionHandler()
{
set_exception_handler(array($this,'exceptionHandler'));
}
/**
* FirePHP's exception handler
*
* Logs all exceptions to your firebug console and then stops the script.
*
* @param Exception $Exception
* @throws Exception
*/
function exceptionHandler($Exception) {
$this->fb($Exception);
}
/**
* Set custom processor url for FirePHP
*
* @param string $URL
*/
public function setProcessorUrl($URL)
{
$this->setHeader('X-FirePHP-ProcessorURL', $URL);
}
/**
* Set custom renderer url for FirePHP
*
* @param string $URL
*/
public function setRendererUrl($URL)
{
$this->setHeader('X-FirePHP-RendererURL', $URL);
}
/**
* Start a group for following messages
*
* @param string $Name
* @return true
* @throws Exception
*/
public function group($Name) {
return $this->fb(null, $Name, FirePHP::GROUP_START);
}
/**
* Ends a group you have started before
*
* @return true
* @throws Exception
*/
public function groupEnd() {
return $this->fb(null, null, FirePHP::GROUP_END);
}
/**
* Log object with label to firebug console
*
* @see FirePHP::LOG
* @param mixes $Object
* @param string $Label
* @return true
* @throws Exception
*/
public function log($Object, $Label=null) {
return $this->fb($Object, $Label, FirePHP::LOG);
}
/**
* Log object with label to firebug console
*
* @see FirePHP::INFO
* @param mixes $Object
* @param string $Label
* @return true
* @throws Exception
*/
public function info($Object, $Label=null) {
return $this->fb($Object, $Label, FirePHP::INFO);
}
/**
* Log object with label to firebug console
*
* @see FirePHP::WARN
* @param mixes $Object
* @param string $Label
* @return true
* @throws Exception
*/
public function warn($Object, $Label=null) {
return $this->fb($Object, $Label, FirePHP::WARN);
}
/**
* Log object with label to firebug console
*
* @see FirePHP::ERROR
* @param mixes $Object
* @param string $Label
* @return true
* @throws Exception
*/
public function error($Object, $Label=null) {
return $this->fb($Object, $Label, FirePHP::ERROR);
}
/**
* Dumps key and variable to firebug server panel
*
* @see FirePHP::DUMP
* @param string $Key
* @param mixed $Variable
* @return true
* @throws Exception
*/
public function dump($Key, $Variable) {
return $this->fb($Variable, $Key, FirePHP::DUMP);
}
/**
* Log a trace in the firebug console
*
* @see FirePHP::TRACE
* @param string $Label
* @return true
* @throws Exception
*/
public function trace($Label) {
return $this->fb($Label, FirePHP::TRACE);
}
/**
* Log a table in the firebug console
*
* @see FirePHP::TABLE
* @param string $Label
* @param string $Table
* @return true
* @throws Exception
*/
public function table($Label, $Table) {
return $this->fb($Table, $Label, FirePHP::TABLE);
}
/**
* Check if FirePHP is installed on client
*
* @return boolean
*/
public function detectClientExtension() {
/* Check if FirePHP is installed on client */
if(!@preg_match_all('/\sFirePHP\/([\.|\d]*)\s?/si',$this->getUserAgent(),$m) ||
!version_compare($m[1][0],'0.0.6','>=')) {
return false;
}
return true;
}
/**
* Log varible to Firebug
*
* @see http://www.firephp.org/Wiki/Reference/Fb
* @param mixed $Object The variable to be logged
* @return true Return TRUE if message was added to headers, FALSE otherwise
* @throws Exception
*/
public function fb($Object) {
if(!$this->enabled) {
return false;
}
if (headers_sent($filename, $linenum)) {
throw $this->newException('Headers already sent in '.$filename.' on line '.$linenum.'. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.');
}
$Type = null;
$Label = null;
if(func_num_args()==1) {
} else
if(func_num_args()==2) {
switch(func_get_arg(1)) {
case self::LOG:
case self::INFO:
case self::WARN:
case self::ERROR:
case self::DUMP:
case self::TRACE:
case self::EXCEPTION:
case self::TABLE:
case self::GROUP_START:
case self::GROUP_END:
$Type = func_get_arg(1);
break;
default:
$Label = func_get_arg(1);
break;
}
} else
if(func_num_args()==3) {
$Type = func_get_arg(2);
$Label = func_get_arg(1);
} else {
throw $this->newException('Wrong number of arguments to fb() function!');
}
if(!$this->detectClientExtension()) {
return false;
}
$meta = array();
$skipFinalObjectEncode = false;
if($Object instanceof Exception) {
$meta['file'] = $this->_escapeTraceFile($Object->getFile());
$meta['line'] = $Object->getLine();
$trace = $Object->getTrace();
if($Object instanceof ErrorException
&& isset($trace[0]['function'])
&& $trace[0]['function']=='errorHandler'
&& isset($trace[0]['class'])
&& $trace[0]['class']=='FirePHP') {
$severity = false;
switch($Object->getSeverity()) {
case E_WARNING: $severity = 'E_WARNING'; break;
case E_NOTICE: $severity = 'E_NOTICE'; break;
case E_USER_ERROR: $severity = 'E_USER_ERROR'; break;
case E_USER_WARNING: $severity = 'E_USER_WARNING'; break;
case E_USER_NOTICE: $severity = 'E_USER_NOTICE'; break;
case E_STRICT: $severity = 'E_STRICT'; break;
case E_RECOVERABLE_ERROR: $severity = 'E_RECOVERABLE_ERROR'; break;
case E_DEPRECATED: $severity = 'E_DEPRECATED'; break;
case E_USER_DEPRECATED: $severity = 'E_USER_DEPRECATED'; break;
}
$Object = array('Class'=>get_class($Object),
'Message'=>$severity.': '.$Object->getMessage(),
'File'=>$this->_escapeTraceFile($Object->getFile()),
'Line'=>$Object->getLine(),
'Type'=>'trigger',
'Trace'=>$this->_escapeTrace(array_splice($trace,2)));
$skipFinalObjectEncode = true;
} else {
$Object = array('Class'=>get_class($Object),
'Message'=>$Object->getMessage(),
'File'=>$this->_escapeTraceFile($Object->getFile()),
'Line'=>$Object->getLine(),
'Type'=>'throw',
'Trace'=>$this->_escapeTrace($trace));
$skipFinalObjectEncode = true;
}
$Type = self::EXCEPTION;
} else
if($Type==self::TRACE) {
$trace = debug_backtrace();
if(!$trace) return false;
for( $i=0 ; $i<sizeof($trace) ; $i++ ) {
if(isset($trace[$i]['class'])
&& isset($trace[$i]['file'])
&& ($trace[$i]['class']=='FirePHP'
|| $trace[$i]['class']=='FB')
&& (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
|| substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
/* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
} else
if(isset($trace[$i]['class'])
&& isset($trace[$i+1]['file'])
&& $trace[$i]['class']=='FirePHP'
&& substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
/* Skip fb() */
} else
if($trace[$i]['function']=='fb'
|| $trace[$i]['function']=='trace'
|| $trace[$i]['function']=='send') {
$Object = array('Class'=>isset($trace[$i]['class'])?$trace[$i]['class']:'',
'Type'=>isset($trace[$i]['type'])?$trace[$i]['type']:'',
'Function'=>isset($trace[$i]['function'])?$trace[$i]['function']:'',
'Message'=>$trace[$i]['args'][0],
'File'=>isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'',
'Line'=>isset($trace[$i]['line'])?$trace[$i]['line']:'',
'Args'=>isset($trace[$i]['args'])?$this->encodeObject($trace[$i]['args']):'',
'Trace'=>$this->_escapeTrace(array_splice($trace,$i+1)));
$skipFinalObjectEncode = true;
$meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
$meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
break;
}
}
} else
if($Type==self::TABLE) {
if(isset($Object[0]) && is_string($Object[0])) {
$Object[1] = $this->encodeTable($Object[1]);
} else {
$Object = $this->encodeTable($Object);
}
$skipFinalObjectEncode = true;
} else {
if($Type===null) {
$Type = self::LOG;
}
}
if($this->options['includeLineNumbers']) {
if(!isset($meta['file']) || !isset($meta['line'])) {
$trace = debug_backtrace();
for( $i=0 ; $trace && $i<sizeof($trace) ; $i++ ) {
if(isset($trace[$i]['class'])
&& isset($trace[$i]['file'])
&& ($trace[$i]['class']=='FirePHP'
|| $trace[$i]['class']=='FB')
&& (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
|| substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
/* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
} else
if(isset($trace[$i]['class'])
&& isset($trace[$i+1]['file'])
&& $trace[$i]['class']=='FirePHP'
&& substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
/* Skip fb() */
} else
if(isset($trace[$i]['file'])
&& substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php') {
/* Skip FB::fb() */
} else {
$meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
$meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
break;
}
}
}
} else {
unset($meta['file']);
unset($meta['line']);
}
$this->setHeader('X-Wf-Protocol-1','http://meta.wildfirehq.org/Protocol/JsonStream/0.2');
$this->setHeader('X-Wf-1-Plugin-1','http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/'.self::VERSION);
$structure_index = 1;
if($Type==self::DUMP) {
$structure_index = 2;
$this->setHeader('X-Wf-1-Structure-2','http://meta.firephp.org/Wildfire/Structure/FirePHP/Dump/0.1');
} else {
$this->setHeader('X-Wf-1-Structure-1','http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1');
}
if($Type==self::DUMP) {
$msg = '{"'.$Label.'":'.$this->jsonEncode($Object, $skipFinalObjectEncode).'}';
} else {
$msg_meta = array('Type'=>$Type);
if($Label!==null) {
$msg_meta['Label'] = $Label;
}
if(isset($meta['file'])) {
$msg_meta['File'] = $meta['file'];
}
if(isset($meta['line'])) {
$msg_meta['Line'] = $meta['line'];
}
$msg = '['.$this->jsonEncode($msg_meta).','.$this->jsonEncode($Object, $skipFinalObjectEncode).']';
}
$parts = explode("\n",chunk_split($msg, 5000, "\n"));
for( $i=0 ; $i<count($parts) ; $i++) {
$part = $parts[$i];
if ($part) {
if(count($parts)>2) {
// Message needs to be split into multiple parts
$this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
(($i==0)?strlen($msg):'')
. '|' . $part . '|'
. (($i<count($parts)-2)?'\\':''));
} else {
$this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
strlen($part) . '|' . $part . '|');
}
$this->messageIndex++;
if ($this->messageIndex > 99999) {
throw new Exception('Maximum number (99,999) of messages reached!');
}
}
}
$this->setHeader('X-Wf-1-Index',$this->messageIndex-1);
return true;
}
/**
* Standardizes path for windows systems.
*
* @param string $Path
* @return string
*/
protected function _standardizePath($Path) {
return preg_replace('/\\\\+/','/',$Path);
}
/**
* Escape trace path for windows systems
*
* @param array $Trace
* @return array
*/
protected function _escapeTrace($Trace) {
if(!$Trace) return $Trace;
for( $i=0 ; $i<sizeof($Trace) ; $i++ ) {
if(isset($Trace[$i]['file'])) {
$Trace[$i]['file'] = $this->_escapeTraceFile($Trace[$i]['file']);
}
if(isset($Trace[$i]['args'])) {
$Trace[$i]['args'] = $this->encodeObject($Trace[$i]['args']);
}
}
return $Trace;
}
/**
* Escape file information of trace for windows systems
*
* @param string $File
* @return string
*/
protected function _escapeTraceFile($File) {
/* Check if we have a windows filepath */
if(strpos($File,'\\')) {
/* First strip down to single \ */
$file = preg_replace('/\\\\+/','\\',$File);
return $file;
}
return $File;
}
/**
* Send header
*
* @param string $Name
* @param string_type $Value
*/
protected function setHeader($Name, $Value) {
return header($Name.': '.$Value);
}
/**
* Get user agent
*
* @return string|false
*/
protected function getUserAgent() {
if(!isset($_SERVER['HTTP_USER_AGENT'])) return false;
return $_SERVER['HTTP_USER_AGENT'];
}
/**
* Returns a new exception
*
* @param string $Message
* @return Exception
*/
protected function newException($Message) {
return new Exception($Message);
}
/**
* Encode an object into a JSON string
*
* Uses PHP's jeson_encode() if available
*
* @param object $Object The object to be encoded
* @return string The JSON string
*/
protected function jsonEncode($Object, $skipObjectEncode=false)
{
if(!$skipObjectEncode) {
$Object = $this->encodeObject($Object);
}
if(function_exists('json_encode')
&& $this->options['useNativeJsonEncode']!=false) {
return json_encode($Object);
} else {
return $this->json_encode($Object);
}
}
/**
* Encodes a table by encoding each row and column with encodeObject()
*
* @param array $Table The table to be encoded
* @return array
*/
protected function encodeTable($Table) {
if(!$Table) return $Table;
for( $i=0 ; $i<count($Table) ; $i++ ) {
if(is_array($Table[$i])) {
for( $j=0 ; $j<count($Table[$i]) ; $j++ ) {
$Table[$i][$j] = $this->encodeObject($Table[$i][$j]);
}
}
}
return $Table;
}
/**
* Encodes an object including members with
* protected and private visibility
*
* @param Object $Object The object to be encoded
* @param int $Depth The current traversal depth
* @return array All members of the object
*/
protected function encodeObject($Object, $ObjectDepth = 1, $ArrayDepth = 1)
{
$return = array();
if (is_object($Object)) {
if ($ObjectDepth > $this->options['maxObjectDepth']) {
return '** Max Object Depth ('.$this->options['maxObjectDepth'].') **';
}
foreach ($this->objectStack as $refVal) {
if ($refVal === $Object) {
return '** Recursion ('.get_class($Object).') **';
}
}
array_push($this->objectStack, $Object);
$return['__className'] = $class = get_class($Object);
$reflectionClass = new ReflectionClass($class);
$properties = array();
foreach( $reflectionClass->getProperties() as $property) {
$properties[$property->getName()] = $property;
}
$members = (array)$Object;
foreach( $properties as $raw_name => $property ) {
$name = $raw_name;
if($property->isStatic()) {
$name = 'static:'.$name;
}
if($property->isPublic()) {
$name = 'public:'.$name;
} else
if($property->isPrivate()) {
$name = 'private:'.$name;
$raw_name = "\0".$class."\0".$raw_name;
} else
if($property->isProtected()) {
$name = 'protected:'.$name;
$raw_name = "\0".'*'."\0".$raw_name;
}
if(!(isset($this->objectFilters[$class])
&& is_array($this->objectFilters[$class])
&& in_array($raw_name,$this->objectFilters[$class]))) {
if(array_key_exists($raw_name,$members)
&& !$property->isStatic()) {
$return[$name] = $this->encodeObject($members[$raw_name], $ObjectDepth + 1, 1);
} else {
if(method_exists($property,'setAccessible')) {
$property->setAccessible(true);
$return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
} else
if($property->isPublic()) {
$return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
} else {
$return[$name] = '** Need PHP 5.3 to get value **';
}
}
} else {
$return[$name] = '** Excluded by Filter **';
}
}
// Include all members that are not defined in the class
// but exist in the object
foreach( $members as $raw_name => $value ) {
$name = $raw_name;
if ($name{0} == "\0") {
$parts = explode("\0", $name);
$name = $parts[2];
}
if(!isset($properties[$name])) {
$name = 'undeclared:'.$name;
if(!(isset($this->objectFilters[$class])
&& is_array($this->objectFilters[$class])
&& in_array($raw_name,$this->objectFilters[$class]))) {
$return[$name] = $this->encodeObject($value, $ObjectDepth + 1, 1);
} else {
$return[$name] = '** Excluded by Filter **';
}
}
}
array_pop($this->objectStack);
} elseif (is_array($Object)) {
if ($ArrayDepth > $this->options['maxArrayDepth']) {
return '** Max Array Depth ('.$this->options['maxArrayDepth'].') **';
}
foreach ($Object as $key => $val) {
// Encoding the $GLOBALS PHP array causes an infinite loop
// if the recursion is not reset here as it contains
// a reference to itself. This is the only way I have come up
// with to stop infinite recursion in this case.
if($key=='GLOBALS'
&& is_array($val)
&& array_key_exists('GLOBALS',$val)) {
$val['GLOBALS'] = '** Recursion (GLOBALS) **';
}
$return[$key] = $this->encodeObject($val, 1, $ArrayDepth + 1);
}
} else {
if(self::is_utf8($Object)) {
return $Object;
} else {
return utf8_encode($Object);
}
}
return $return;
}
/**
* Returns true if $string is valid UTF-8 and false otherwise.
*
* @param mixed $str String to be tested
* @return boolean
*/
protected static function is_utf8($str) {
$c=0; $b=0;
$bits=0;
$len=strlen($str);
for($i=0; $i<$len; $i++){
$c=ord($str[$i]);
if($c > 128){
if(($c >= 254)) return false;
elseif($c >= 252) $bits=6;
elseif($c >= 248) $bits=5;
elseif($c >= 240) $bits=4;
elseif($c >= 224) $bits=3;
elseif($c >= 192) $bits=2;
else return false;
if(($i+$bits) > $len) return false;
while($bits > 1){
$i++;
$b=ord($str[$i]);
if($b < 128 || $b > 191) return false;
$bits--;
}
}
}
return true;
}
/**
* Converts to and from JSON format.
*
* JSON (JavaScript Object Notation) is a lightweight data-interchange
* format. It is easy for humans to read and write. It is easy for machines
* to parse and generate. It is based on a subset of the JavaScript
* Programming Language, Standard ECMA-262 3rd Edition - December 1999.
* This feature can also be found in Python. JSON is a text format that is
* completely language independent but uses conventions that are familiar
* to programmers of the C-family of languages, including C, C++, C#, Java,
* JavaScript, Perl, TCL, and many others. These properties make JSON an
* ideal data-interchange language.
*
* This package provides a simple encoder and decoder for JSON notation. It
* is intended for use with client-side Javascript applications that make
* use of HTTPRequest to perform server communication functions - data can
* be encoded into JSON notation for use in a client-side javascript, or
* decoded from incoming Javascript requests. JSON format is native to
* Javascript, and can be directly eval()'ed with no further parsing
* overhead
*
* All strings should be in ASCII or UTF-8 format!
*
* LICENSE: Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met: Redistributions of source code must retain the
* above copyright notice, this list of conditions and the following
* disclaimer. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* @category
* @package Services_JSON
* @author Michal Migurski <mike-json@teczno.com>
* @author Matt Knapp <mdknapp[at]gmail[dot]com>
* @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
* @author Christoph Dorn <christoph@christophdorn.com>
* @copyright 2005 Michal Migurski
* @version CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $
* @license http://www.opensource.org/licenses/bsd-license.php
* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=198
*/
/**
* Keep a list of objects as we descend into the array so we can detect recursion.
*/
private $json_objectStack = array();
/**
* convert a string from one UTF-8 char to one UTF-16 char
*
* Normally should be handled by mb_convert_encoding, but
* provides a slower PHP-only method for installations
* that lack the multibye string extension.
*
* @param string $utf8 UTF-8 character
* @return string UTF-16 character
* @access private
*/
private function json_utf82utf16($utf8)
{
// oh please oh please oh please oh please oh please
if(function_exists('mb_convert_encoding')) {
return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
}
switch(strlen($utf8)) {
case 1:
// this case should never be reached, because we are in ASCII range
// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
return $utf8;
case 2:
// return a UTF-16 character from a 2-byte UTF-8 char
// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
return chr(0x07 & (ord($utf8{0}) >> 2))
. chr((0xC0 & (ord($utf8{0}) << 6))
| (0x3F & ord($utf8{1})));
case 3:
// return a UTF-16 character from a 3-byte UTF-8 char
// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
return chr((0xF0 & (ord($utf8{0}) << 4))
| (0x0F & (ord($utf8{1}) >> 2)))
. chr((0xC0 & (ord($utf8{1}) << 6))
| (0x7F & ord($utf8{2})));
}
// ignoring UTF-32 for now, sorry
return '';
}
/**
* encodes an arbitrary variable into JSON format
*
* @param mixed $var any number, boolean, string, array, or object to be encoded.
* see argument 1 to Services_JSON() above for array-parsing behavior.
* if var is a strng, note that encode() always expects it
* to be in ASCII or UTF-8 format!
*
* @return mixed JSON string representation of input var or an error if a problem occurs
* @access public
*/
private function json_encode($var)
{
if(is_object($var)) {
if(in_array($var,$this->json_objectStack)) {
return '"** Recursion **"';
}
}
switch (gettype($var)) {
case 'boolean':
return $var ? 'true' : 'false';
case 'NULL':
return 'null';
case 'integer':
return (int) $var;
case 'double':
case 'float':
return (float) $var;
case 'string':
// STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
$ascii = '';
$strlen_var = strlen($var);
/*
* Iterate over every character in the string,
* escaping with a slash or encoding to UTF-8 where necessary
*/
for ($c = 0; $c < $strlen_var; ++$c) {
$ord_var_c = ord($var{$c});
switch (true) {
case $ord_var_c == 0x08:
$ascii .= '\b';
break;
case $ord_var_c == 0x09:
$ascii .= '\t';
break;
case $ord_var_c == 0x0A:
$ascii .= '\n';
break;
case $ord_var_c == 0x0C:
$ascii .= '\f';
break;
case $ord_var_c == 0x0D:
$ascii .= '\r';
break;
case $ord_var_c == 0x22:
case $ord_var_c == 0x2F:
case $ord_var_c == 0x5C:
// double quote, slash, slosh
$ascii .= '\\'.$var{$c};
break;
case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
// characters U-00000000 - U-0000007F (same as ASCII)
$ascii .= $var{$c};
break;
case (($ord_var_c & 0xE0) == 0xC0):
// characters U-00000080 - U-000007FF, mask 110XXXXX
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
$char = pack('C*', $ord_var_c, ord($var{$c + 1}));
$c += 1;
$utf16 = $this->json_utf82utf16($char);
$ascii .= sprintf('\u%04s', bin2hex($utf16));
break;
case (($ord_var_c & 0xF0) == 0xE0):
// characters U-00000800 - U-0000FFFF, mask 1110XXXX
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
$char = pack('C*', $ord_var_c,
ord($var{$c + 1}),
ord($var{$c + 2}));
$c += 2;
$utf16 = $this->json_utf82utf16($char);
$ascii .= sprintf('\u%04s', bin2hex($utf16));
break;
case (($ord_var_c & 0xF8) == 0xF0):
// characters U-00010000 - U-001FFFFF, mask 11110XXX
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
$char = pack('C*', $ord_var_c,
ord($var{$c + 1}),
ord($var{$c + 2}),
ord($var{$c + 3}));
$c += 3;
$utf16 = $this->json_utf82utf16($char);
$ascii .= sprintf('\u%04s', bin2hex($utf16));
break;
case (($ord_var_c & 0xFC) == 0xF8):
// characters U-00200000 - U-03FFFFFF, mask 111110XX
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
$char = pack('C*', $ord_var_c,
ord($var{$c + 1}),
ord($var{$c + 2}),
ord($var{$c + 3}),
ord($var{$c + 4}));
$c += 4;
$utf16 = $this->json_utf82utf16($char);
$ascii .= sprintf('\u%04s', bin2hex($utf16));
break;
case (($ord_var_c & 0xFE) == 0xFC):
// characters U-04000000 - U-7FFFFFFF, mask 1111110X
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
$char = pack('C*', $ord_var_c,
ord($var{$c + 1}),
ord($var{$c + 2}),
ord($var{$c + 3}),
ord($var{$c + 4}),
ord($var{$c + 5}));
$c += 5;
$utf16 = $this->json_utf82utf16($char);
$ascii .= sprintf('\u%04s', bin2hex($utf16));
break;
}
}
return '"'.$ascii.'"';
case 'array':
/*
* As per JSON spec if any array key is not an integer
* we must treat the the whole array as an object. We
* also try to catch a sparsely populated associative
* array with numeric keys here because some JS engines
* will create an array with empty indexes up to
* max_index which can cause memory issues and because
* the keys, which may be relevant, will be remapped
* otherwise.
*
* As per the ECMA and JSON specification an object may
* have any string as a property. Unfortunately due to
* a hole in the ECMA specification if the key is a
* ECMA reserved word or starts with a digit the
* parameter is only accessible using ECMAScript's
* bracket notation.
*/
// treat as a JSON object
if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
$this->json_objectStack[] = $var;
$properties = array_map(array($this, 'json_name_value'),
array_keys($var),
array_values($var));
array_pop($this->json_objectStack);
foreach($properties as $property) {
if($property instanceof Exception) {
return $property;
}
}
return '{' . join(',', $properties) . '}';
}
$this->json_objectStack[] = $var;
// treat it like a regular array
$elements = array_map(array($this, 'json_encode'), $var);
array_pop($this->json_objectStack);
foreach($elements as $element) {
if($element instanceof Exception) {
return $element;
}
}
return '[' . join(',', $elements) . ']';
case 'object':
$vars = self::encodeObject($var);
$this->json_objectStack[] = $var;
$properties = array_map(array($this, 'json_name_value'),
array_keys($vars),
array_values($vars));
array_pop($this->json_objectStack);
foreach($properties as $property) {
if($property instanceof Exception) {
return $property;
}
}
return '{' . join(',', $properties) . '}';
default:
return null;
}
}
/**
* array-walking function for use in generating JSON-formatted name-value pairs
*
* @param string $name name of key to use
* @param mixed $value reference to an array element to be encoded
*
* @return string JSON-formatted name-value pair, like '"name":value'
* @access private
*/
private function json_name_value($name, $value)
{
// Encoding the $GLOBALS PHP array causes an infinite loop
// if the recursion is not reset here as it contains
// a reference to itself. This is the only way I have come up
// with to stop infinite recursion in this case.
if($name=='GLOBALS'
&& is_array($value)
&& array_key_exists('GLOBALS',$value)) {
$value['GLOBALS'] = '** Recursion **';
}
$encoded_value = $this->json_encode($value);
if($encoded_value instanceof Exception) {
return $encoded_value;
}
return $this->json_encode(strval($name)) . ':' . $encoded_value;
}
}
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