gaas/lib/gaasdClient.php

   1 <?php
   2
   3
   4 require_once("globalLib.php");
   5 require_once("gaasClientMessages.php");
   6
   7 // I am the gaasd client.. i know all, i see all... I am the "only" way to interact with the gaasd server.
   8
   9 class GAASClient {
  10
  11         // the main send/receive functions. Communicates with gaasd
  12         // we always expect one send followed by one receive message
  13         function sendReceive($message_type, $message)
  14         {
  15                 // yeah... this is totally gunna work
  16                 global $TCP_PORT_NUMBER;
  17
  18                 $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  19                 $res = socket_connect($socket, "127.0.0.1", $TCP_PORT_NUMBER);
  20                 if(!$res) {
  21                         socket_close($socket);
  22                         return false;
  23                 }
  24
  25                 $msg["type"] = $message_type;
  26                 $msg["data"] = $message;
  27
  28                 $datacomp = base64_encode(serialize($msg));
  29                 $tosend = "AC:$datacomp:EOD";
  30
  31                 socket_send($socket, $tosend, strlen($tosend), 0);
  32
  33                 // get up to one meg of data - this is bad... i can feel this function
  34                 // hurting alot
  35                 // TODO FIX THIS - its garbage code... im not really sure how to handle this really
  36                 // we need to read back as AS:data:EOD - i think it now does.. i hope, tho we need
  37                 // timeouts now.
  38                 $recvd = "";
  39                 $continue = true;
  40                 while($continue) {
  41                         $size = socket_recv($socket, $recvd_a, 1024, 0);
  42                         $recvd .= $recvd_a;
  43                         if(preg_match("/.*\:EOD$/", $recvd)) {
  44                                 // we have a full string... break out
  45                                 $continue = false;
  46                                 break;
  47                         }
  48                 }
  49
  50
  51                 // first check we got something that makes sense
  52                 if(preg_match("/^AS:.*:EOD/", $recvd) < 1) {
  53                         socket_close($socket);
  54                         echo "Returned data is not in right format\n";
  55                         // we have a problem jim
  56                         return false;
  57                 }
  58
  59                 $xps = explode(":", $recvd);
  60
  61                 $component =  unserialize(base64_decode($xps[1]));
  62
  63                 if($component["type"] != $message_type) {
  64                         echo "Message type was not the same as original message\n";
  65                         // we have a problem jim
  66                         socket_close($socket);
  67                         return false;
  68                 }
  69
  70                 //echo "component\n";
  71                 //print_r($component);
  72
  73                 socket_close($socket);
  74
  75                 return $component["data"];
  76         }
  77
  78         // this is one thing i love about php... how truely dynamic it can be in very easy to do ways.
  79         // im not entirely sure what im doing with this bit yet
  80         function __call($func, $params)
  81         {
  82                 // im a little stuck here.
  83                 //  want messages to be defineable in terms of plugins
  84                 // but i dont think this is the way to do it
  85                 global $MESSAGES;
  86                 $st_defined = constant($func);
  87                 //echo "func is $st_defined\n";
  88                 $function_send = $MESSAGES[$st_defined]."_clientsend";
  89                 $function_recv = $MESSAGES[$st_defined]."_clientrecv";
  90                 //echo "real function is $function_send, $function_recv\n";
  91
  92                 if(function_exists($function_send) && function_exists($function_recv)) {
  93                         return $function_recv($this->sendReceive($st_defined, $function_send($params)));
  94                 } else {
  95                         error_log("Function, $function does not exist!");
  96                 }
  97         }
  98 }
  99
 100 ?>