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(Throwable $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?> 370