From abc4c2f6ce64056d2c9c8981ab8573ecf907e927 Mon Sep 17 00:00:00 2001
From: "[VB]AWOL" <vbawol@veteranbastards.com>
Date: Sun, 27 Jul 2014 23:11:49 -0500
Subject: [PATCH] push PHP steam server list query code

Example of how to get from server list from steam works for both Arma 2
and 3 servers
Original Source:
https://developer.valvesoftware.com/wiki/User:Pizzahut/test.php
---
 Tools/ServerList/steam_list.php | 140 ++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 Tools/ServerList/steam_list.php

diff --git a/Tools/ServerList/steam_list.php b/Tools/ServerList/steam_list.php
new file mode 100644
index 000000000..ad1c16e86
--- /dev/null
+++ b/Tools/ServerList/steam_list.php
@@ -0,0 +1,140 @@
+<pre>
+	<?php
+	/*
+		Example of how to get from server list from steam works for both Arma 2 and 3 servers
+		Original Source: https://developer.valvesoftware.com/wiki/User:Pizzahut/test.php
+	*/
+
+	$master_servers = array("hl2master.steampowered.com");
+
+	define("MIN_PORT", 27010); // Range of port numbers which the master servers
+	define("MAX_PORT", 27013); // potentially use.
+	// define("FILTER", '\gamedir\arma3'); // A3
+	define("FILTER", '\gamedir\arma2arrowpc'); // A2
+	define("REGION", "\xFF"); // region = world
+	define("TIMEOUT", 2.0); // 2s timeout
+
+	function query_timeout(&$socket, $seed)
+	{
+	   echo "Sending query to master server.\n";
+	   stream_set_timeout($socket, TIMEOUT);
+	   if (!fwrite($socket, "1".REGION."$seed\0".FILTER."\0"))
+	   {
+	      fclose($socket);
+	      exit("fwrite error\n");
+	   }
+
+	   echo "Reading response header.\n";
+	   stream_set_timeout($socket, TIMEOUT);
+	   $s = bin2hex(fread($socket, 6));
+	   $info = stream_get_meta_data($socket);
+	   if ($info['timed_out'])
+	      echo "Master server timed out.\n";
+	   else
+	   {
+	      if ($s !== "ffffffff660a")
+	      {
+	         fclose($socket);
+	         if ($s == "")
+	            echo "Expected ff ff ff ff 66 0a (hex) but got nothing.\n";
+	         else
+	            echo "Expected ff ff ff ff 66 0a (hex) but got $s.\n";
+	         return True;
+	      }
+	   }
+	   return $info['timed_out'];
+	}
+
+	// Connect to master server, return timeout info.
+	// The socket is passed as reference and thus returned as well.
+
+	function master_server_timeout(&$socket, $ip)
+	{
+	   $port = MIN_PORT;
+	   do {
+	      echo "Connecting to master server \"$ip:$port\".\n";
+	      $socket = fsockopen("udp://$ip", $port, $errno, $errstr, TIMEOUT);
+	      if (!$socket) exit("Error $errno : $errstr \n");
+	      $timeout = query_timeout($socket, "0.0.0.0:0");
+	      $port = $port + 1;
+	   } while ($timeout && ($port <= MAX_PORT));
+	   return $timeout;
+	}
+
+	// Repeat until list isn't empty.
+
+	do
+	{
+
+		// Try all master servers until we find one that isn't timing out.
+
+		do
+		   foreach ($master_servers as $ip)
+			  if ($timeout=master_server_timeout($socket, $ip))
+				 fclose($socket);
+			  else
+				 break;
+		while ($timeout);
+
+		// Read list with server addresses (IP:port).
+
+		$count = 0;
+		$old_a1 = 0; $old_a2 = 0; $old_a3 = 0; $old_a4 = 0; $old_a5 = 0;
+		$max_timeouts = 6;
+		do
+		{
+		   stream_set_timeout($socket, TIMEOUT);
+		   $a1 = ord(fread($socket,1));
+		   $info = stream_get_meta_data($socket);
+		   if ($info['timed_out'])
+		   {
+			  $seed = "$old_a1.$old_a2.$old_a3.$old_a4:$old_a5";
+			  echo "Seed: $seed\n";
+			  while (query_timeout($socket, $seed));
+			  stream_set_timeout($socket, TIMEOUT);
+			  $a1 = ord(fread($socket,1));
+			  $info = stream_get_meta_data($socket);
+			  if ($info['timed_out'])
+			  {
+				 echo "Timeout occured.\n";
+				 break;
+			  }
+			  $check_for_duplicate = 1;
+		   }
+		   else
+			  $check_for_duplicate = 0;
+
+		   // Let's always read the rest of the address (even if it starts with 0) in
+		   // order to empty the master server's write buffer. This may avoid subsequent
+		   // problems, but I'm paranoid here.
+		   $a2 = ord(fread($socket,1));
+		   $a3 = ord(fread($socket,1));
+		   $a4 = ord(fread($socket,1));
+		   $a5 = ord(fread($socket,1))*256 + ord(fread($socket,1));
+
+		   if ($a1 != 0)
+		   {
+			  if (($check_for_duplicate==0)||($a1!=$old_a1)||($a2!=$old_a2)||
+			  ($a3!=$old_a3)||($a4!=$old_a4)||($a5!=$old_a5))
+			  {
+				$count++;
+				//echo "$count $a1.$a2.$a3.$a4:$a5\n";
+
+				$addy = "$a1.$a2.$a3.$a4";
+				$key = $addy.":".$a5;
+
+				echo $key."\n";
+
+
+			  }
+			  $old_a1 = $a1; $old_a2 = $a2; $old_a3 = $a3; $old_a4 = $a4; $old_a5 = $a5;
+		   }
+		} while ($a1 != 0);
+		fclose($socket);
+
+	} while ($count == 0);
+
+	echo "Retrieved $count server addresses.\n";
+
+?>
+</pre>
\ No newline at end of file