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/wp-includes/IXR/ -> class-IXR-introspectionserver.php (source)

   1  <?php
   2  
   3  /**
   4   * IXR_IntrospectionServer
   5   *
   6   * @package IXR
   7   * @since 1.5.0
   8   */
   9  class IXR_IntrospectionServer extends IXR_Server
  10  {
  11      var $signatures;
  12      var $help;
  13  
  14      /**
  15       * PHP5 constructor.
  16       */
  17      function __construct()
  18      {
  19          $this->setCallbacks();
  20          $this->setCapabilities();
  21          $this->capabilities['introspection'] = array(
  22              'specUrl' => 'http://xmlrpc.usefulinc.com/doc/reserved.html',
  23              'specVersion' => 1
  24          );
  25          $this->addCallback(
  26              'system.methodSignature',
  27              'this:methodSignature',
  28              array('array', 'string'),
  29              'Returns an array describing the return type and required parameters of a method'
  30          );
  31          $this->addCallback(
  32              'system.getCapabilities',
  33              'this:getCapabilities',
  34              array('struct'),
  35              'Returns a struct describing the XML-RPC specifications supported by this server'
  36          );
  37          $this->addCallback(
  38              'system.listMethods',
  39              'this:listMethods',
  40              array('array'),
  41              'Returns an array of available methods on this server'
  42          );
  43          $this->addCallback(
  44              'system.methodHelp',
  45              'this:methodHelp',
  46              array('string', 'string'),
  47              'Returns a documentation string for the specified method'
  48          );
  49      }
  50  
  51      /**
  52       * PHP4 constructor.
  53       */
  54  	public function IXR_IntrospectionServer() {
  55          self::__construct();
  56      }
  57  
  58      function addCallback($method, $callback, $args, $help)
  59      {
  60          $this->callbacks[$method] = $callback;
  61          $this->signatures[$method] = $args;
  62          $this->help[$method] = $help;
  63      }
  64  
  65      function call($methodname, $args)
  66      {
  67          // Make sure it's in an array
  68          if ($args && !is_array($args)) {
  69              $args = array($args);
  70          }
  71  
  72          // Over-rides default call method, adds signature check
  73          if (!$this->hasMethod($methodname)) {
  74              return new IXR_Error(-32601, 'server error. requested method "'.$this->message->methodName.'" not specified.');
  75          }
  76          $method = $this->callbacks[$methodname];
  77          $signature = $this->signatures[$methodname];
  78          $returnType = array_shift($signature);
  79  
  80          // Check the number of arguments
  81          if (count($args) != count($signature)) {
  82              return new IXR_Error(-32602, 'server error. wrong number of method parameters');
  83          }
  84  
  85          // Check the argument types
  86          $ok = true;
  87          $argsbackup = $args;
  88          for ($i = 0, $j = count($args); $i < $j; $i++) {
  89              $arg = array_shift($args);
  90              $type = array_shift($signature);
  91              switch ($type) {
  92                  case 'int':
  93                  case 'i4':
  94                      if (is_array($arg) || !is_int($arg)) {
  95                          $ok = false;
  96                      }
  97                      break;
  98                  case 'base64':
  99                  case 'string':
 100                      if (!is_string($arg)) {
 101                          $ok = false;
 102                      }
 103                      break;
 104                  case 'boolean':
 105                      if ($arg !== false && $arg !== true) {
 106                          $ok = false;
 107                      }
 108                      break;
 109                  case 'float':
 110                  case 'double':
 111                      if (!is_float($arg)) {
 112                          $ok = false;
 113                      }
 114                      break;
 115                  case 'date':
 116                  case 'dateTime.iso8601':
 117                      if (!is_a($arg, 'IXR_Date')) {
 118                          $ok = false;
 119                      }
 120                      break;
 121              }
 122              if (!$ok) {
 123                  return new IXR_Error(-32602, 'server error. invalid method parameters');
 124              }
 125          }
 126          // It passed the test - run the "real" method call
 127          return parent::call($methodname, $argsbackup);
 128      }
 129  
 130      function methodSignature($method)
 131      {
 132          if (!$this->hasMethod($method)) {
 133              return new IXR_Error(-32601, 'server error. requested method "'.$method.'" not specified.');
 134          }
 135          // We should be returning an array of types
 136          $types = $this->signatures[$method];
 137          $return = array();
 138          foreach ($types as $type) {
 139              switch ($type) {
 140                  case 'string':
 141                      $return[] = 'string';
 142                      break;
 143                  case 'int':
 144                  case 'i4':
 145                      $return[] = 42;
 146                      break;
 147                  case 'double':
 148                      $return[] = 3.1415;
 149                      break;
 150                  case 'dateTime.iso8601':
 151                      $return[] = new IXR_Date(time());
 152                      break;
 153                  case 'boolean':
 154                      $return[] = true;
 155                      break;
 156                  case 'base64':
 157                      $return[] = new IXR_Base64('base64');
 158                      break;
 159                  case 'array':
 160                      $return[] = array('array');
 161                      break;
 162                  case 'struct':
 163                      $return[] = array('struct' => 'struct');
 164                      break;
 165              }
 166          }
 167          return $return;
 168      }
 169  
 170      function methodHelp($method)
 171      {
 172          return $this->help[$method];
 173      }
 174  }


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