source: trunk/client/modules/Elezioni/grafici/jpgraph_errhandler.inc.php@ 284

Last change on this file since 284 was 284, checked in by roby, 6 years ago
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1<?php
2//=======================================================================
3// File: JPGRAPH_ERRHANDLER.PHP
4// Description: Error handler class together with handling of localized
5// error messages. All localized error messages are stored
6// in a separate file under the "lang/" subdirectory.
7// Created: 2006-09-24
8// Ver: $Id: jpgraph_errhandler.inc.php 1920 2009-12-08 10:02:26Z ljp $
9//
10// Copyright 2006 (c) Aditus Consulting. All rights reserved.
11//========================================================================
12
13if( !defined('DEFAULT_ERR_LOCALE') ) {
14 define('DEFAULT_ERR_LOCALE','en');
15}
16
17if( !defined('USE_IMAGE_ERROR_HANDLER') ) {
18 define('USE_IMAGE_ERROR_HANDLER',true);
19}
20
21GLOBAL $__jpg_err_locale ;
22$__jpg_err_locale = DEFAULT_ERR_LOCALE;
23
24class ErrMsgText {
25 private $lt=NULL;
26 function __construct() {
27 GLOBAL $__jpg_err_locale;
28 $file = 'lang/'.$__jpg_err_locale.'.inc.php';
29
30 // If the chosen locale doesn't exist try english
31 if( !file_exists(dirname(__FILE__).'/'.$file) ) {
32 $__jpg_err_locale = 'en';
33 }
34
35 $file = 'lang/'.$__jpg_err_locale.'.inc.php';
36 if( !file_exists(dirname(__FILE__).'/'.$file) ) {
37 die('Chosen locale file ("'.$file.'") for error messages does not exist or is not readable for the PHP process. Please make sure that the file exists and that the file permissions are such that the PHP process is allowed to read this file.');
38 }
39 require($file);
40 $this->lt = $_jpg_messages;
41 }
42
43 function Get($errnbr,$a1=null,$a2=null,$a3=null,$a4=null,$a5=null) {
44 GLOBAL $__jpg_err_locale;
45 if( !isset($this->lt[$errnbr]) ) {
46 return 'Internal error: The specified error message ('.$errnbr.') does not exist in the chosen locale ('.$__jpg_err_locale.')';
47 }
48 $ea = $this->lt[$errnbr];
49 $j=0;
50 if( $a1 !== null ) {
51 $argv[$j++] = $a1;
52 if( $a2 !== null ) {
53 $argv[$j++] = $a2;
54 if( $a3 !== null ) {
55 $argv[$j++] = $a3;
56 if( $a4 !== null ) {
57 $argv[$j++] = $a4;
58 if( $a5 !== null ) {
59 $argv[$j++] = $a5;
60 }
61 }
62 }
63 }
64 }
65 $numargs = $j;
66 if( $ea[1] != $numargs ) {
67 // Error message argument count do not match.
68 // Just return the error message without arguments.
69 return $ea[0];
70 }
71 switch( $numargs ) {
72 case 1:
73 $msg = sprintf($ea[0],$argv[0]);
74 break;
75 case 2:
76 $msg = sprintf($ea[0],$argv[0],$argv[1]);
77 break;
78 case 3:
79 $msg = sprintf($ea[0],$argv[0],$argv[1],$argv[2]);
80 break;
81 case 4:
82 $msg = sprintf($ea[0],$argv[0],$argv[1],$argv[2],$argv[3]);
83 break;
84 case 5:
85 $msg = sprintf($ea[0],$argv[0],$argv[1],$argv[2],$argv[3],$argv[4]);
86 break;
87 case 0:
88 default:
89 $msg = sprintf($ea[0]);
90 break;
91 }
92 return $msg;
93 }
94}
95
96//
97// A wrapper class that is used to access the specified error object
98// (to hide the global error parameter and avoid having a GLOBAL directive
99// in all methods.
100//
101class JpGraphError {
102 private static $__iImgFlg = true;
103 private static $__iLogFile = '';
104 private static $__iTitle = 'JpGraph Error: ';
105 public static function Raise($aMsg,$aHalt=true){
106 throw new JpGraphException($aMsg);
107 }
108 public static function SetErrLocale($aLoc) {
109 GLOBAL $__jpg_err_locale ;
110 $__jpg_err_locale = $aLoc;
111 }
112 public static function RaiseL($errnbr,$a1=null,$a2=null,$a3=null,$a4=null,$a5=null) {
113 throw new JpGraphExceptionL($errnbr,$a1,$a2,$a3,$a4,$a5);
114 }
115 public static function SetImageFlag($aFlg=true) {
116 self::$__iImgFlg = $aFlg;
117 }
118 public static function GetImageFlag() {
119 return self::$__iImgFlg;
120 }
121 public static function SetLogFile($aFile) {
122 self::$__iLogFile = $aFile;
123 }
124 public static function GetLogFile() {
125 return self::$__iLogFile;
126 }
127 public static function SetTitle($aTitle) {
128 self::$__iTitle = $aTitle;
129 }
130 public static function GetTitle() {
131 return self::$__iTitle;
132 }
133}
134
135class JpGraphException extends Exception {
136 // Redefine the exception so message isn't optional
137 public function __construct($message, $code = 0) {
138 // make sure everything is assigned properly
139 parent::__construct($message, $code);
140 }
141 // custom string representation of object
142 public function _toString() {
143 return __CLASS__ . ": [{$this->code}]: {$this->message} at " . basename($this->getFile()) . ":" . $this->getLine() . "\n" . $this->getTraceAsString() . "\n";
144 }
145 // custom representation of error as an image
146 public function Stroke() {
147 if( JpGraphError::GetImageFlag() ) {
148 $errobj = new JpGraphErrObjectImg();
149 $errobj->SetTitle(JpGraphError::GetTitle());
150 }
151 else {
152 $errobj = new JpGraphErrObject();
153 $errobj->SetTitle(JpGraphError::GetTitle());
154 $errobj->SetStrokeDest(JpGraphError::GetLogFile());
155 }
156 $errobj->Raise($this->getMessage());
157 }
158 static public function defaultHandler(Exception $exception) {
159 global $__jpg_OldHandler;
160 if( $exception instanceof JpGraphException ) {
161 $exception->Stroke();
162 }
163 else {
164 // Restore old handler
165 if( $__jpg_OldHandler !== NULL ) {
166 set_exception_handler($__jpg_OldHandler);
167 }
168 throw $exception;
169 }
170 }
171}
172
173class JpGraphExceptionL extends JpGraphException {
174 // Redefine the exception so message isn't optional
175 public function __construct($errcode,$a1=null,$a2=null,$a3=null,$a4=null,$a5=null) {
176 // make sure everything is assigned properly
177 $errtxt = new ErrMsgText();
178 JpGraphError::SetTitle('JpGraph Error: '.$errcode);
179 parent::__construct($errtxt->Get($errcode,$a1,$a2,$a3,$a4,$a5), 0);
180 }
181}
182
183// Setup the default handler
184global $__jpg_OldHandler;
185$__jpg_OldHandler = set_exception_handler(array('JpGraphException','defaultHandler'));
186
187//
188// First of all set up a default error handler
189//
190
191//=============================================================
192// The default trivial text error handler.
193//=============================================================
194class JpGraphErrObject {
195
196 protected $iTitle = "JpGraph error: ";
197 protected $iDest = false;
198
199
200 function __construct() {
201 // Empty. Reserved for future use
202 }
203
204 function SetTitle($aTitle) {
205 $this->iTitle = $aTitle;
206 }
207
208 function SetStrokeDest($aDest) {
209 $this->iDest = $aDest;
210 }
211
212 // If aHalt is true then execution can't continue. Typical used for fatal errors
213 function Raise($aMsg,$aHalt=false) {
214 if( $this->iDest != '' ) {
215 if( $this->iDest == 'syslog' ) {
216 error_log($this->iTitle.$aMsg);
217 }
218 else {
219 $str = '['.date('r').'] '.$this->iTitle.$aMsg."\n";
220 $f = @fopen($this->iDest,'a');
221 if( $f ) {
222 @fwrite($f,$str);
223 @fclose($f);
224 }
225 }
226 }
227 else {
228 $aMsg = $this->iTitle.$aMsg;
229 // Check SAPI and if we are called from the command line
230 // send the error to STDERR instead
231 if( PHP_SAPI == 'cli' ) {
232 fwrite(STDERR,$aMsg);
233 }
234 else {
235 echo $aMsg;
236 }
237 }
238 if( $aHalt )
239 exit(1);
240 }
241}
242
243//==============================================================
244// An image based error handler
245//==============================================================
246class JpGraphErrObjectImg extends JpGraphErrObject {
247
248 function __construct() {
249 parent::__construct();
250 // Empty. Reserved for future use
251 }
252
253 function Raise($aMsg,$aHalt=true) {
254 $img_iconerror =
255 'iVBORw0KGgoAAAANSUhEUgAAACgAAAAoCAMAAAC7IEhfAAAAaV'.
256 'BMVEX//////2Xy8mLl5V/Z2VvMzFi/v1WyslKlpU+ZmUyMjEh/'.
257 'f0VyckJlZT9YWDxMTDjAwMDy8sLl5bnY2K/MzKW/v5yyspKlpY'.
258 'iYmH+MjHY/PzV/f2xycmJlZVlZWU9MTEXY2Ms/PzwyMjLFTjea'.
259 'AAAAAXRSTlMAQObYZgAAAAFiS0dEAIgFHUgAAAAJcEhZcwAACx'.
260 'IAAAsSAdLdfvwAAAAHdElNRQfTBgISOCqusfs5AAABLUlEQVR4'.
261 '2tWV3XKCMBBGWfkranCIVClKLd/7P2Q3QsgCxjDTq+6FE2cPH+'.
262 'xJ0Ogn2lQbsT+Wrs+buAZAV4W5T6Bs0YXBBwpKgEuIu+JERAX6'.
263 'wM2rHjmDdEITmsQEEmWADgZm6rAjhXsoMGY9B/NZBwJzBvn+e3'.
264 'wHntCAJdGu9SviwIwoZVDxPB9+Rc0TSEbQr0j3SA1gwdSn6Db0'.
265 '6Tm1KfV6yzWGQO7zdpvyKLKBDmRFjzeB3LYgK7r6A/noDAfjtS'.
266 'IXaIzbJSv6WgUebTMV4EoRB8a2mQiQjgtF91HdKDKZ1gtFtQjk'.
267 'YcWaR5OKOhkYt+ZsTFdJRfPAApOpQYJTNHvCRSJR6SJngQadfc'.
268 'vd69OLMddVOPCGVnmrFD8bVYd3JXfxXPtLR/+mtv59/ALWiiMx'.
269 'qL72fwAAAABJRU5ErkJggg==' ;
270
271
272 if( function_exists("imagetypes") ) {
273 $supported = imagetypes();
274 } else {
275 $supported = 0;
276 }
277
278 if( !function_exists('imagecreatefromstring') ) {
279 $supported = 0;
280 }
281
282 if( ob_get_length() || headers_sent() || !($supported & IMG_PNG) ) {
283 // Special case for headers already sent or that the installation doesn't support
284 // the PNG format (which the error icon is encoded in).
285 // Dont return an image since it can't be displayed
286 die($this->iTitle.' '.$aMsg);
287 }
288
289 $aMsg = wordwrap($aMsg,55);
290 $lines = substr_count($aMsg,"\n");
291
292 // Create the error icon GD
293 $erricon = Image::CreateFromString(base64_decode($img_iconerror));
294
295 // Create an image that contains the error text.
296 $w=400;
297 $h=100 + 15*max(0,$lines-3);
298
299 $img = new Image($w,$h);
300
301
302 // Drop shadow
303 $img->SetColor("gray");
304 $img->FilledRectangle(5,5,$w-1,$h-1,10);
305 $img->SetColor("gray:0.7");
306 $img->FilledRectangle(5,5,$w-3,$h-3,10);
307
308 // Window background
309 $img->SetColor("lightblue");
310 $img->FilledRectangle(1,1,$w-5,$h-5);
311 $img->CopyCanvasH($img->img,$erricon,5,30,0,0,40,40);
312
313 // Window border
314 $img->SetColor("black");
315 $img->Rectangle(1,1,$w-5,$h-5);
316 $img->Rectangle(0,0,$w-4,$h-4);
317
318 // Window top row
319 $img->SetColor("darkred");
320 for($y=3; $y < 18; $y += 2 )
321 $img->Line(1,$y,$w-6,$y);
322
323 // "White shadow"
324 $img->SetColor("white");
325
326 // Left window edge
327 $img->Line(2,2,2,$h-5);
328 $img->Line(2,2,$w-6,2);
329
330 // "Gray button shadow"
331 $img->SetColor("darkgray");
332
333 // Gray window shadow
334 $img->Line(2,$h-6,$w-5,$h-6);
335 $img->Line(3,$h-7,$w-5,$h-7);
336
337 // Window title
338 $m = floor($w/2-5);
339 $l = 110;
340 $img->SetColor("lightgray:1.3");
341 $img->FilledRectangle($m-$l,2,$m+$l,16);
342
343 // Stroke text
344 $img->SetColor("darkred");
345 $img->SetFont(FF_FONT2,FS_BOLD);
346 $img->StrokeText($m-90,15,$this->iTitle);
347 $img->SetColor("black");
348 $img->SetFont(FF_FONT1,FS_NORMAL);
349 $txt = new Text($aMsg,52,25);
350 $txt->SetFont(FF_FONT1);
351 $txt->Align("left","top");
352 $txt->Stroke($img);
353 if ($this->iDest) {
354 $img->Stream($this->iDest);
355 } else {
356 $img->Headers();
357 $img->Stream();
358 }
359 if( $aHalt )
360 die();
361 }
362}
363
364
365
366if( ! USE_IMAGE_ERROR_HANDLER ) {
367 JpGraphError::SetImageFlag(false);
368}
369?>
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