1: <?php // tests.inc.php
  2: /* -------------------------------------------------------------
  3: This file is part of FreeNATS
  4: 
  5: FreeNATS is (C) Copyright 2008 PurplePixie Systems
  6: 
  7: FreeNATS is free software: you can redistribute it and/or modify
  8: it under the terms of the GNU General Public License as published by
  9: the Free Software Foundation, either version 3 of the License, or
 10: (at your option) any later version.
 11: 
 12: FreeNATS is distributed in the hope that it will be useful,
 13: but WITHOUT ANY WARRANTY; without even the implied warranty of
 14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15: GNU General Public License for more details.
 16: 
 17: You should have received a copy of the GNU General Public License
 18: along with FreeNATS.  If not, see www.gnu.org/licenses
 19: 
 20: For more information see www.purplepixie.org/freenats
 21: -------------------------------------------------------------- */
 22: 
 23: 
 24: 
 25:  function icmpChecksum($data)
 26:     {
 27:     if (strlen($data)%2)
 28:     $data .= "\x00";
 29:     
 30:     $bit = unpack('n*', $data);
 31:     $sum = array_sum($bit);
 32:     
 33:     while ($sum >> 16)
 34:     $sum = ($sum >> 16) + ($sum & 0xffff);
 35:     
 36:     return pack('n*', ~$sum);
 37:     }
 38:    
 39: function PingTest($host,$ctimeout=-1)
 40: 	{
 41: 	global $NATS;
 42: 	$FreeNATS_Timer=new TFNTimer();
 43:     // Make Package
 44:     $type= "\x08";
 45:     $code= "\x00";
 46:     $checksum= "\x00\x00";
 47:     $identifier = "\x00\x00";
 48:     $seqNumber = "\x00\x00";
 49:     $data= "FreeNATS";
 50:     $package = $type.$code.$checksum.$identifier.$seqNumber.$data;
 51:     $checksum = icmpChecksum($package); // Calculate the checksum
 52:     $package = $type.$code.$checksum.$identifier.$seqNumber.$data;
 53:     
 54:     // Return s or ms(s*1000)
 55:     $returnsecs=true;
 56:     if (isset($NATS))
 57:     	{
 58: 	    if ($NATS->Cfg->Get("test.icmp.returnms",0)==1) $returnsecs=false;
 59:     	}
 60: 
 61: 	// Timeout Values
 62:     if (isset($NATS)) $timeout=$NATS->Cfg->Get("test.icmp.timeout",10);
 63:     else $timeout=10;
 64:     if ($ctimeout>0) $timeout=$ctimeout; // use custom timeout if passed
 65:     if ($timeout<=0) $timeout=10; // catch-all for defaults bug
 66:     
 67:     // Create Socket
 68:     $socket = @socket_create(AF_INET, SOCK_RAW, 1);
 69:     	//or die(socket_strerror(socket_last_error()));
 70:     if (!$socket) return 0;
 71:     
 72:     // Set Non-Blocking
 73:     @socket_set_nonblock($socket);
 74:     	
 75:     // Connect Socket
 76:     $sconn=@socket_connect($socket, $host, null);
 77:     if (!$sconn) return 0;
 78:     
 79:     // Send Data
 80:     @socket_send($socket, $package, strLen($package), 0);
 81:         
 82:     // Start Timer
 83:     $FreeNATS_Timer->Start();
 84:     $startTime = microtime(true); // need this for the looping section
 85:     
 86: 
 87:     // Read Data
 88:     $keepon=true;
 89: 
 90:     while( (!(@socket_read($socket, 255))) && $keepon)
 91:     	{ // basically just kill time
 92:     	// consider putting some sort of sleepy thing here to lower load but would f* with figures!
 93:     	
 94:     	if ( (microtime(true) - $startTime) > $timeout )
 95:     		$keepon=false;
 96: 		}
 97:     	
 98: 	if ($keepon) // didn't time out - read data
 99:     	{
100: 	    $elapsed=$FreeNATS_Timer->Stop();
101: 	    if ($returnsecs) $elapsed=round($elapsed,4);
102: 	    else $elapsed=round( ($elapsed*1000),4 );
103: 	    @socket_close($socket);
104:     	// $ret=round(microtime(true) - $startTime, 4); -- old method
105:     	if ($elapsed<=0) $elapsed="0.0001"; // safety catch-all
106:     	return $elapsed;
107:     	/*
108:     	if ($ret==0) return "0.0001";
109:     	else 
110:     		{
111: 	    	if ($ret<=0) return "0.0001";
112: 	    	else return $ret;
113:     		}
114:     	*/
115:     	}
116:     	
117:     // Socket timed out
118:     @socket_close($socket);
119:     return 0;
120: 	}
121: 
122: function WebTest($url,$timeout=-1)
123: 	{
124: 	global $NATS;
125: 	if ($timeout<=0) // use NATS or env
126: 		{
127: 		if (isset($NATS))
128: 			{
129: 			$nto=$NATS->Cfg->Get("test.http.timeout",-1);
130: 			if ($nto>0) $timeout=$nto; // use NATS timeout
131: 			}
132: 		}
133: 	if ($timeout>0) // use the set timeout
134: 		$oldtimeout=ini_set("default_socket_timeout",$timeout);
135: 	$fp=@fopen($url,"r");
136: 	if ($fp<=0)
137: 		{
138: 		if ($timeout>0) ini_set("default_socket_timeout",$oldtimeout);
139: 		return -1;
140: 		}
141: 	$ctr=0;
142: 	while ($body=@fgets($fp,1024)) $ctr+=sizeof($body);
143: 	@fclose($fp);
144: 	if ($timeout>0) ini_set("default_socket_timeout",$oldtimeout);
145: 	return $ctr;
146: 	}
147: 	
148: function DoTest($test,$param,$hostname="",$timeout=-1)
149: {
150: switch ($test)
151: 	{
152: 	case "web":
153: 		return WebTest($param,$timeout);
154: 		break;
155: 	case "tcp": // nb TCP does not support timeouts currently
156: 		$fp=@fsockopen($hostname,$param);
157: 		if ($fp<=0) return 0;
158: 		@fclose($fp);
159: 		return 1;
160: 		break;
161: 	case "wtime":
162: 		$startTime=microtime(true);
163: 		$r=WebTest($param,$timeout);
164: 		$elapsedTime=round(microtime(true)-$startTime,4);
165: 		if ($r<0) return -1; // fopen failed
166: 		if ($r==0) return -2; // no chars shown as returned
167: 		if ($elapsedTime<=0) return 0.0001;
168: 		return $elapsedTime;
169: 		break;
170: 	case "testloop":
171: 		return $param;
172: 		break;
173: 		
174: 	case "testrand":
175: 		mt_srand(microtime()*1000000);
176: 		if ( ($param=="") || ($param==0) ) $param=100;
177: 		return mt_rand(0,$param);
178: 		break;
179: 		
180: 	case "ping":
181: 		return PingTest($param,$timeout);
182: 		break;
183: 	}
184: return -1;
185: }
186: 
187: function SimpleEval($test,$result)
188: {
189: switch($test)
190: 	{
191: 	case "ping": // handles both types of simple evaluation (inbuilt ICMP and remote ping)
192: 		if ($result<=0) return 2;
193: 		return 0;
194: 	case "web":
195: 		if ($result<=0) return 2;
196: 		return 0;
197: 	case "tcp":
198: 		if ($result==1) return 0;
199: 		return 2;
200: 	case "wtime":
201: 		if ($result<0) return 2;
202: 		return 0;
203: 	case "testloop":
204: 		return 0;
205: 	case "testrand":
206: 		return 0;
207: 	}
208: return -1;
209: }
210: 
211: function aText($al)
212: {
213: switch($al)
214: 	{
215: 	case -1: return "Untested";
216: 	case 0: return "Passed";
217: 	case 1: return "Warning";
218: 	case 2: return "Failed";
219: 	default: return "Unknown";
220: 	}
221: }
222: ?>