1: <?php // test.graph.php
  2: ob_start();
  3: /* -------------------------------------------------------------
  4: This file is part of FreeNATS
  5: 
  6: FreeNATS is (C) Copyright 2008 PurplePixie Systems
  7: 
  8: FreeNATS is free software: you can redistribute it and/or modify
  9: it under the terms of the GNU General Public License as published by
 10: the Free Software Foundation, either version 3 of the License, or
 11: (at your option) any later version.
 12: 
 13: FreeNATS is distributed in the hope that it will be useful,
 14: but WITHOUT ANY WARRANTY; without even the implied warranty of
 15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16: GNU General Public License for more details.
 17: 
 18: You should have received a copy of the GNU General Public License
 19: along with FreeNATS.  If not, see www.gnu.org/licenses
 20: 
 21: For more information see www.purplepixie.org/freenats
 22: -------------------------------------------------------------- */
 23: 
 24: require("include.php");
 25: $NATS->Start();
 26: 
 27: 
 28: 
 29: 
 30: function ty($y)
 31: {
 32: global $height;
 33: return $height-$y;
 34: }
 35: 
 36: //if (!isset($_REQUEST['testid'])) $_REQUEST['testid']="L26";
 37: 
 38: // width height suid startx finishx
 39: 
 40: if (isset($_REQUEST['width'])) $width=$_REQUEST['width'];
 41: else $width=700;
 42: if (isset($_REQUEST['height'])) $height=$_REQUEST['height'];
 43: else $height=150;
 44: 
 45: // other incoming stuff
 46: if (isset($_REQUEST['draw_spike'])) $draw_spike=$_REQUEST['draw_spike'];
 47: else $draw_spike=1;
 48: if (isset($_REQUEST['draw_track'])) $draw_track=$_REQUEST['draw_track'];
 49: else $draw_track=1;
 50: if (isset($_REQUEST['draw_under'])) $draw_under=$_REQUEST['draw_under'];
 51: else $draw_under=1;
 52: if (isset($_REQUEST['draw_under_pass'])) $draw_under=$_REQUEST['draw_under_pass'];
 53: else $draw_under_pass=0;
 54: 
 55: 
 56: // start image
 57: $im=@imagecreate($width,$height)
 58: 	or die("Cannot create image");
 59: 
 60: // setup colours
 61: $col=array();
 62: $col['white']=imagecolorallocate($im,255,255,255);
 63: $col['black']=imagecolorallocate($im,0,0,0);
 64: $col['red']=imagecolorallocate($im,250,50,50);
 65: $col['lightgrey']=imagecolorallocate($im,200,200,200);
 66: $col['blue']=imagecolorallocate($im,150,150,255);
 67: $col['green']=imagecolorallocate($im,0,200,0);
 68: $col['lightgreen']=imagecolorallocate($im,150,250,150);
 69: $col['grey']=imagecolorallocate($im,150,150,150);
 70: $col['orange']=imagecolorallocate($im,200,200,0);
 71: 
 72: if (isset($_REQUEST['bgcol'])) $c_bg=$col[$_REQUEST['bgcol']];
 73: else $c_bg=$col['white'];
 74: 
 75: if (isset($_REQUEST['txtcol'])) $c_txt=$col[$_REQUEST['txtcol']];
 76: else $c_txt=$col['black'];
 77: 
 78: if (isset($_REQUEST['axescol'])) $c_axes=$col[$_REQUEST['axescol']];
 79: else $c_axes=$col['lightgrey'];
 80: 
 81: if (isset($_REQUEST['trackcol'])) $c_track=$col[$_REQUEST['trackcol']];
 82: else $c_track=$col['blue'];
 83: 
 84: // fill background
 85: imagefill($im,1,1,$c_bg);
 86: 	
 87: function ierror($t)
 88: {
 89: global $im,$width,$height,$col;
 90: header("Content-type: image/png");
 91: imagestring($im,2,($width/2)-20,$height/2,"ERROR: ".$t,$col['red']);
 92: imagepng($im);
 93: imagedestroy($im);
 94: exit();
 95: }
 96: 
 97: //ierror("Test");
 98: 
 99: if ( $NATS->Cfg->Get("site.graph.public",0)!=1 )	// private so must authenticate
100: 	{
101: 	if (!$NATS_Session->Check($NATS->DB))
102: 		{
103: 		ierror("Authorisation Failure");
104: 		exit();
105: 		}
106: 	if ($NATS_Session->userlevel<1) ierror("User Disabled");
107: 	}
108: else	// public so use site.graph.key if set
109: 	{
110: 	$key=$NATS->Cfg->Get("site.graph.key","");
111: 	if ( ($key!="") && ( (!isset($_REQUEST['graphkey'])) || ($_REQUEST['graphkey']!=$key) ) )
112: 		{	// there IS a key AND either graphkey is not provided or doesn't match
113: 		ierror("Graph Key Failure");
114: 		exit();
115: 		}
116: 	}
117: 
118: if (!isset($_REQUEST['nodeid'])) $nodeid="";
119: else $nodeid=$_REQUEST['nodeid'];
120: 
121: if (!isset($_REQUEST['testid'])) ierror("No test ID");
122: 
123: $day=date("d");
124: $month=date("m");
125: $year=date("Y");
126: 
127: if (isset($_REQUEST['startx'])) $startx=$_REQUEST['startx'];
128: else
129: 	{ // 0:00 today    HMS mo da yr
130: 	$startx=mktime(0,0,0,$month,$day,$year);
131: 	//$startx=1203451396;
132: 	}
133: 	
134: if (isset($_REQUEST['finishx'])) $finishx=$_REQUEST['finishx'];
135: else $finishx=mktime(23,59,59,$month,$day,$year);
136: 
137: if ($startx<=0) $startx=time()+$startx;
138: if ($finishx<=0) $finishx=time()+$finishx;
139: 
140: //$finishx=1203454996;
141: $periodx=$finishx-$startx;
142: $startt=date("H:i:s d/m/y",$startx);
143: $finisht=date("H:i:s d/m/y",$finishx);
144: 
145: 
146: // titles and stuff
147: imagestring($im,2,2,2,$startt,$c_txt);
148: // -90 for size 1
149: imagestring($im,2,$width-108,2,$finisht,$c_txt);
150: 
151: if (isset($_REQUEST['title'])) $title=$_REQUEST['title'];
152: else $title=$nodeid;
153: $len=strlen($title)*4;
154: imagestring($im,4,($width/2)-$len,2,$title,$c_txt);
155: 
156: // offsets and lengths
157: $xoff=50+1;
158: $xlen=$width-$xoff-5;
159: 
160: $yoff=1;
161: $ylen=$height-$yoff-20;
162: 
163: 
164: // v-axes
165: imageline($im,50,ty(1),50,ty($height-20),$c_axes);
166: imageline($im,$width-5,ty(1),$width-5,ty($height-20),$c_axes);
167: // y-axes
168: imageline($im,50,ty(1),$width-5,ty(1),$c_axes);
169: imageline($im,$width-5,ty($height-20),50,ty($height-20),$c_axes);
170: //ierror("hello");
171: 
172: 
173: // range data
174: 
175: // Lowest
176: 
177: if (isset($_REQUEST['rangemin'])) $dlow=$_REQUEST['rangemin'];
178: else
179: 	{
180: 	$q="SELECT testvalue FROM fnrecord WHERE testid=\"".ss($_REQUEST['testid'])."\"";
181: 	$q.=" AND recordx>=".ss($startx)." AND recordx<=".ss($finishx)." ";
182: 	$q.="ORDER BY testvalue ASC LIMIT 0,1"; // lowest
183: 	$r=$NATS->DB->Query($q);
184: 	//ierror($q);
185: 	if (!$row=$NATS->DB->Fetch_Array($r)) ierror("No data for test");
186: 	$lowest=$row['testvalue'];
187: 	$dlow=$lowest;
188: 	if ($dlow>0) $dlow=0;
189: 	$NATS->DB->Free($r);
190: 	}
191: 
192: 
193: // Highest
194: 
195: if (isset($_REQUEST['rangemax'])) $dhigh=$_REQUEST['rangemax'];
196: else
197: {
198: 	$q="SELECT testvalue FROM fnrecord WHERE testid=\"".ss($_REQUEST['testid'])."\"";
199: 	$q.=" AND recordx>=".ss($startx)." AND recordx<=".ss($finishx)." ";
200: 	$q.= "ORDER BY testvalue DESC LIMIT 0,1"; //highest
201: 	
202: 	$r=$NATS->DB->Query($q);
203: 	$row=$NATS->DB->Fetch_Array($r);
204: 	$highest=$row['testvalue'];
205: 	$dhigh=$highest;
206: 	$NATS->DB->Free($r);
207: 	if (isset($_REQUEST['rangemaxmin']))
208: 		{
209: 		if ($dhigh<$_REQUEST['rangemaxmin']) $dhigh=$_REQUEST['rangemaxmin'];
210: 		}
211: }
212: 
213: $drange=$dhigh-$dlow;
214: 
215: // calculate scales
216: $xscale=$xlen/$periodx;
217: if ($drange>0) $yscale=$ylen/$drange;
218: else $yscale=1; // doesn't display but no change!
219: 
220: function posx($time) // timex
221: {
222: global $xscale,$startx,$xoff;
223: $drawx=$xscale*($time-$startx);
224: $screenx=$drawx+$xoff;
225: return $screenx;
226: }
227: 
228: function posy($value) 
229: {
230: global $yscale,$dlow,$yoff,$dhigh;
231: if ($value>$dhigh) $value=$dhigh;
232: $drawy=$yscale*($value-$dlow);
233: $screeny=$drawy+$yoff;
234: return $screeny;
235: }
236: 
237: 
238: 
239: // show axes scales
240: imagestring($im,1,2,ty(10),$dlow,$c_txt);
241: imagestring($im,1,2,ty($height-18),$dhigh,$c_txt);
242: 
243: 
244: if (isset($_REQUEST['units'])) 
245: 	{
246: 	if (strpos($_REQUEST['units'],"/")===false)
247: 		imagestring($im,1,2,ty($height-28),$_REQUEST['units'],$c_txt);
248: 	
249: 
250: 	else
251: 		{
252: 		$unit_array=explode("/",$_REQUEST['units']);
253: 		$a=0;
254: 		foreach($unit_array as $unit_string)
255: 			{
256: 			imagestring($im,1,2,ty($height-28-($a*8)),$unit_string,$c_txt);
257: 			$a++;
258: 			}
259: 		}
260: 	}	
261: 
262: 
263: // get data and draw
264: $q="SELECT testvalue,alertlevel,recordx FROM fnrecord WHERE testid=\"".ss($_REQUEST['testid'])."\" ";
265: $q.="AND recordx>=".ss($startx)." AND recordx<=".ss($finishx)." ORDER BY recordx ASC";
266: //$q.="LIMIT 0,100";
267: $r=$NATS->DB->Query($q);
268: $lastx=0;
269: $lasty=0;
270: 
271: $startval=0;
272: $finishval=0;
273: 
274: while ($row=mysql_fetch_array($r))
275: 	{
276: 	$x=posx($row['recordx']);
277: 	$y=posy($row['testvalue']);
278: 	
279: 	if ($row['alertlevel']==-1) $c=$col['grey'];
280: 	else if ($row['alertlevel']==0) $c=$col['lightgreen'];
281: 	else if ($row['alertlevel']==1) $c=$col['orange'];
282: 	else if ($row['alertlevel']==2) $c=$col['red'];
283: 	else $c=$col['black'];
284: 	
285: 	// up lines
286: 	if ($draw_spike==1) imageline($im,$x,ty(0),$x,ty($y),$c);
287: 
288: 	
289: 		
290: 	if ($lastx!=0)
291: 		{
292: 			
293: 		// join-the-dots
294: 		if ($draw_track==1) imageline($im,$lastx,ty($lasty),$x,ty($y),$c_track);
295: 		
296: 		// fill -- DOES NOT WORK
297: 		//if (($draw_fill==1)&&($draw_spike==1)&&($draw_track==1))
298: 			//imagefill($im,$x-1,ty(1),$c);
299: 		
300: 		// bottom line
301: 		if ($draw_under==1)
302: 			{
303: 			if (($row['alertlevel']>0)||
304: 				 (($row['alertlevel']==0)&&($draw_under_pass==1)) )
305: 				{
306: 				imageline($im,$lastx,ty(1),$x,ty(1),$c);
307: 				imageline($im,$lastx,ty(2),$x,ty(2),$c);
308: 				}
309: 			}
310: 		}	
311: 	
312: 	//imageellipse($im,$x,ty($y),1,1,$c_red);
313: 	
314: 	$lastx=$x;
315: 	$lasty=$y;
316: 	
317: 	}
318: mysql_free_result($r);
319: 
320: 	
321: 
322: // output image
323: header("Content-type: image/png");
324: imagepng($im);
325: imagedestroy($im);
326: exit(); // just in case
327: 
328: ?>
329: