kernel.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # Iris Studios Shared Object Framework [#]version[#]
   5 || # Copyright ©2002-[#]year[#] Iris Studios, Inc.
   6 || #
   7 || # This program 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; version [#]gpl[#] of the License.
  10 || #
  11 || # This program is distributed in the hope that it will be useful, but
  12 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14 || # more details.
  15 || #
  16 || # You should have received a copy of the GNU General Public License along
  17 || # with this program; if not, write to the Free Software Foundation, Inc.,
  18 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  19 || ###################################################################
  20 \*=====================================================================*/
  21
  22 /**
  23 * Iris Studios Shared Object Framework Kernel
  24 * kernel.php
  25 *
  26 * @package      ISSO
  27 */
  28
  29 if (!function_exists('version_compare'))
  30 {
  31         trigger_error('You need PHP version 4.1.0 or newer to run ISSO', E_USER_ERROR);
  32         exit;
  33 }
  34
  35 if (version_compare(PHP_VERSION, '5.0.0', '>='))
  36 {
  37         if (ini_get('error_reporting') & E_NOTICE)
  38         {
  39                 error_reporting(ini_get('error_reporting') - E_NOTICE);
  40         }
  41         if (ini_get('error_reporting') & E_USER_NOTICE)
  42         {
  43                 error_reporting(ini_get('error_reporting') - E_USER_NOTICE);
  44         }
  45 }
  46
  47 $oldlevel = ini_get('error_reporting');
  48 $newlevel = $oldlevel;
  49 $levels = array(E_ERROR => E_USER_ERROR, E_WARNING => E_USER_WARNING, E_NOTICE => E_USER_NOTICE);
  50 foreach ($levels AS $php => $isso)
  51 {
  52         if ($oldlevel & $php)
  53         {
  54                 if (!($oldlevel & $isso))
  55                 {
  56                         $newlevel += $isso;
  57                 }
  58         }
  59         else
  60         {
  61                 if ($oldlevel & $isso)
  62                 {
  63                         $newlevel -= $isso;
  64                 }
  65         }
  66 }
  67 error_reporting($newlevel);
  68
  69 if ((bool)ini_get('register_globals') === true)
  70 {
  71         $superglobals = array('_GET', '_COOKIE', '_FILES', '_POST', '_SERVER', '_ENV');
  72         foreach ($superglobals AS $global)
  73         {
  74                 if (is_array(${$global}))
  75                 {
  76                         foreach (${$global} AS $_key => $_val)
  77                         {
  78                                 if (isset(${$_key}))
  79                                 {
  80                                         unset(${$_key});
  81                                 }
  82                         }
  83                 }
  84         }
  85 }
  86
  87 /**#@+
  88 * Input cleaning type constant
  89 */
  90 /**
  91 * Integer type
  92 */
  93 define('TYPE_INT', 1);
  94
  95 /**
  96 * Unsigned integer
  97 */
  98 define('TYPE_UINT', 2);
  99
 100 /**
 101 * Float type
 102 */
 103 define('TYPE_FLOAT', 4);
 104
 105 /**
 106 * Boolean type
 107 */
 108 define('TYPE_BOOL', 8);
 109
 110 /**
 111 * String - cleaned
 112 */
 113 define('TYPE_STR', 16);
 114
 115 /**
 116 * String - deliberate unclean
 117 */
 118 define('TYPE_STRUN', 32);
 119
 120 /**
 121 * No cleaning - here for use in API
 122 */
 123 define('TYPE_NOCLEAN', 64);
 124 /**#@-*/
 125
 126 /**
 127 * Yes, required
 128 */
 129 define('REQ_YES', 1);
 130
 131 /**
 132 * No, not required
 133 */
 134 define('REQ_NO', 0);
 135
 136 /**
 137 * Iris Studios Shared Object Framework (ISSO)
 138 *
 139 * This framework allows a common backend to be used amongst all Iris
 140 * Studios applications and is built to be abstract and flexible.
 141 * The base framework handles all loading and module management.
 142 *
 143 * Constants:
 144 *               ISSO_NO_INPUT_SANITIZE - Disables the automatic input sanitizer
 145 *               ISSO_CHECK_POST_REFERER - Will check to make sure that on POSTed
 146 *                                                                       data, the referer matches the host
 147 *
 148 * @author               Iris Studios, Inc.
 149 * @copyright    Copyright ©2002 - [#]year[#], Iris Studios, Inc.
 150 * @version              $Revision$
 151 * @package              ISSO
 152 *
 153 */
 154 class Shared_Object_Framework
 155 {
 156         /**
 157         * ISSO version
 158         * @var  string
 159         * @access       private
 160         */
 161         var $version = '[#]version[#]';
 162
 163         /**
 164         * Location of ISSO, used for internal linking
 165         * @var  string
 166         * @access       private
 167         */
 168         var $sourcepath = '';
 169
 170         /**
 171         * Path of the current application
 172         * @var  string
 173         * @access       private
 174         */
 175         var $apppath = '';
 176
 177         /**
 178         * Web path used to get the web location of the installation of ISSO; only used for Printer module
 179         * @var  string
 180         * @access       private
 181         */
 182         var $webpath = '';
 183
 184         /**
 185         * Name of the current application
 186         * @var  string
 187         * @access       private
 188         */
 189         var $application = '';
 190
 191         /**
 192         * Version of the current application
 193         * @var  string
 194         * @access       private
 195         */
 196         var $appversion = '';
 197
 198         /**
 199         * Whether debug mode is on or off
 200         * @var  bool
 201         * @access       private
 202         */
 203         var $debug = false;
 204
 205         /**
 206         * List of all active debug messages
 207         * @var  array
 208         * @access       private
 209         */
 210         var $debuginfo = array();
 211
 212         /**
 213         * List of loaded modules
 214         * @var  array
 215         * @access       private
 216         */
 217         var $modules = array();
 218
 219         /**
 220         * An array of sanitized variables that have been cleaned for HTML tag openers and double quotes
 221         * @var  array
 222         * @access       public
 223         */
 224         var $in = array();
 225
 226         /**
 227         * If we are running with magic_quotes_gpc on or off
 228         * @var  int
 229         * @access       private
 230         */
 231         var $magicquotes = 0;
 232
 233         /**
 234         * Array of user-specified fields that are required for ISSO initialization
 235         * fieldname => array(REQUIRED, CALLBACK PARSER, SET)
 236         * @var  array
 237         * @access       private
 238         */
 239         var $fields = array(
 240                 'sourcepath'    => array(REQ_YES,       'fetch_sourcepath', false),
 241                 'apppath'               => array(REQ_YES,       'fetch_sourcepath',     false),
 242                 'webpath'               => array(REQ_NO,        'fetch_sourcepath',     false),
 243                 'application'   => array(REQ_YES,       null,                           false),
 244                 'appversion'    => array(REQ_NO,        null,                           false),
 245                 'debug'                 => array(REQ_NO,        null,                           false)
 246         );
 247
 248         // ###################################################################
 249         /**
 250         * Constructor
 251         */
 252         function __construct()
 253         {
 254                 $GLOBALS['isso:null-framework'] = null;
 255
 256                 // error reporting
 257                 set_error_handler(array(&$this, '_error_handler'));
 258
 259                 // magic quotes
 260                 $this->magicquotes = get_magic_quotes_gpc();
 261                 set_magic_quotes_runtime(0);
 262
 263                 // start input sanitize using variable_order GPC
 264                 if (!defined('ISSO_NO_INPUT_SANITIZE'))
 265                 {
 266                         $this->exec_sanitize_data();
 267                 }
 268
 269                 if (defined('ISSO_CHECK_POST_REFERER'))
 270                 {
 271                         $this->exec_referer_check();
 272                 }
 273         }
 274
 275         // ###################################################################
 276         /**
 277         * (PHP 4) Constructor
 278         */
 279         function Shared_Object_Framework()
 280         {
 281                 $this->__construct();
 282         }
 283
 284         // ###################################################################
 285         /**
 286         * Sets a specified field in the ISSO. This is used to set all the
 287         * required fields that ISSO uses for linking. It replaces the old
 288         * method of setting the instance variables directly.
 289         *
 290         * @access       public
 291         *
 292         * @param        string  Field name
 293         * @param        mixed   Value of the field
 294         */
 295         function set($fieldname, $value)
 296         {
 297                 if (is_array($this->fields["$fieldname"]))
 298                 {
 299                         if (method_exists($this, $this->fields["$fieldname"][1]))
 300                         {
 301                                 $value = $this->{$this->fields["$fieldname"][1]}($value);
 302                         }
 303
 304                         $this->$fieldname = $value;
 305
 306                         $this->fields["$fieldname"][2] = true;
 307                 }
 308                 else
 309                 {
 310                         trigger_error('Invalid field `' . $fieldname . '` specified in ISSO->set()', E_USER_ERROR);
 311                 }
 312         }
 313
 314         // ###################################################################
 315         /**
 316         * Returns the value of an ISSO field. You should not access any instance
 317         * variables directly, use this instead.
 318         *
 319         * @access       public
 320         *
 321         * @param        string  Field name
 322         *
 323         * @return       mixed   Value of the field
 324         */
 325         function get($fieldname)
 326         {
 327                 if (is_array($this->fields["$fieldname"]))
 328                 {
 329                         if ($this->fields["$fieldname"][2] == false)
 330                         {
 331                                 trigger_error('Field `' . $fieldname . '` is not set and therefore cannot ISSO->get()', E_USER_ERROR);
 332                         }
 333
 334                         return $this->$fieldname;
 335                 }
 336                 else
 337                 {
 338                         trigger_error('Invalid field `' . $fieldname . '` specified in ISSO->get()', E_USER_ERROR);
 339                 }
 340         }
 341
 342         // ###################################################################
 343         /**
 344         * Makes sure that all of the required fields in ISSO are set before
 345         * any action is done. This will throw an error block describing
 346         * the fields that need to be set if any are missing.
 347         *
 348         * @access       public
 349         *
 350         * @param        bool    Is this a non-error environment that should display all fields?
 351         */
 352         function check_isso_fields($called = false)
 353         {
 354                 $missing = array();
 355                 foreach ($this->fields AS $name => $field)
 356                 {
 357                         if ($field[0] == REQ_YES AND $field[2] == false)
 358                         {
 359                                 $missing[] = $name;
 360                         }
 361                         else if ($called == true AND $field[2] == false)
 362                         {
 363                                 $missing[] = $name . ($field[0] == REQ_YES ? ' (REQUIRED)' : '');
 364                         }
 365                 }
 366
 367                 if (count($missing) > 0)
 368                 {
 369                         $error = ($called ? 'The following fields are not set:' : 'You are missing required ISSO fields. Please make sure you have set:');
 370                         $error .= "\n";
 371                         $error .= '<ul>';
 372
 373                         foreach ($missing AS $field)
 374                         {
 375                                 $error .= "\n\t" . '<li>' . $field . '</li>';
 376                         }
 377
 378                         $error .= "\n" . '</ul>';
 379
 380                         $this->message(($called ? '' : 'Missing ') . 'Fields', $error, ($called ? 1 : 3));
 381                         exit;
 382                 }
 383         }
 384
 385         // ###################################################################
 386         /**
 387         * Prepares a path for being set as the sourcepath
 388         *
 389         * @access       public
 390         *
 391         * @param        string  Source path or URL
 392         *
 393         * @return       string  Prepared source path
 394         */
 395         function fetch_sourcepath($source)
 396         {
 397                 if (substr($source, strlen($source) - 1) != DIRECTORY_SEPARATOR)
 398                 {
 399                         $source .= DIRECTORY_SEPARATOR;
 400                 }
 401                 return $source;
 402         }
 403
 404         // ###################################################################
 405         /**
 406         * Loads a framework module
 407         *
 408         * @access       public
 409         *
 410         * @param        string  Name of the framework file to load
 411         * @param        string  Internal variable to initialize as; to not instantiate (just require) leave it as NULL
 412         * @param        bool    Globalize the internal variable?
 413         *
 414         * @return       object  Instantiated instance
 415         */
 416         function &load($framework, $asobject, $globalize = false)
 417         {
 418                 $this->check_isso_fields();
 419
 420                 // set the object interlock
 421                 if (!method_exists($GLOBALS['isso:null-framework'], 'load'))
 422                 {
 423                         $GLOBALS['isso:null-framework'] =& $this;
 424                 }
 425
 426                 if ($this->is_loaded($framework))
 427                 {
 428                         return $this->modules["$framework"];
 429                 }
 430
 431                 if ($this->sourcepath == '')
 432                 {
 433                         trigger_error('Invalid sourcepath specified', E_USER_ERROR);
 434                 }
 435
 436                 if (file_exists($this->sourcepath . $framework . '.php'))
 437                 {
 438                         require_once($this->sourcepath . $framework . '.php');
 439                 }
 440                 else
 441                 {
 442                         trigger_error('Could not find the framework ' . $this->sourcepath . $framework . '.php', E_USER_ERROR);
 443                 }
 444
 445                 if ($asobject === null)
 446                 {
 447                         return;
 448                 }
 449
 450                 if (isset($this->$asobject))
 451                 {
 452                         trigger_error('Cannot instantiate framework `' . $framework . '` into `' . $asobject . '`', E_USER_ERROR);
 453                 }
 454
 455                 $this->$asobject = new $framework($this);
 456
 457                 $this->modules["$framework"] =& $this->$asobject;
 458
 459                 if ($globalize)
 460                 {
 461                         $GLOBALS["$asobject"] =& $this->$asobject;
 462                 }
 463
 464                 return $this->$asobject;
 465         }
 466
 467         // ###################################################################
 468         /**
 469         * Prints a list of all currently loaded framework modules
 470         *
 471         * @access       public
 472         *
 473         * @param        bool    Return the data as an array?
 474         *
 475         * @return       mixed   HTML output or an array of loaded modules
 476         */
 477         function show_modules($return = false)
 478         {
 479                 foreach ($this->modules AS $object)
 480                 {
 481                         $modules[] = get_class($object);
 482                 }
 483
 484                 if ($return)
 485                 {
 486                         return $modules;
 487                 }
 488                 else
 489                 {
 490                         $output = "\n\n<ul>\n\t<li>";
 491                         $output .= implode("</li>\n\t<li>", $modules);
 492                         $output .= "</li>\n</ul>\n\n";
 493                         $this->message('Loaded Modules', $output, 1);
 494                 }
 495         }
 496
 497         // ###################################################################
 498         /**
 499         * Verifies to see if a framework has been loaded
 500         *
 501         * @access       public
 502         *
 503         * @param        string  Framework name
 504         *
 505         * @return       bool    Whether or not the framework has been loaded
 506         */
 507         function is_loaded($framework)
 508         {
 509                 if (isset($this->modules["$framework"]))
 510                 {
 511                         return true;
 512                 }
 513                 else
 514                 {
 515                         return false;
 516                 }
 517         }
 518
 519         // ###################################################################
 520         /**
 521         * Prints an ISSO message
 522         *
 523         * @access       public
 524         *
 525         * @param        string  The title of the message
 526         * @param        string  The content of the message
 527         * @param        integer Type of message to be printed
 528         * @param        bool    Return the output?
 529         * @param        bool    Show the debug stack?
 530         *
 531         * @return       mixed   Output or null
 532         */
 533         function message($title, $message, $type, $return = false, $stack = true)
 534         {
 535                 switch ($type)
 536                 {
 537                         // Message
 538                         case 1:
 539                                 $prefix = 'Message';
 540                                 $color = '#669900';
 541                                 $font = '#000000';
 542                         break;
 543
 544                         // Warning
 545                         case 2:
 546                                 $prefix = 'Warning';
 547                                 $color = '#003399';
 548                                 $font = '#FFFFFF';
 549                         break;
 550
 551                         case 3:
 552                                 $prefix = 'Error';
 553                                 $color = '#990000';
 554                                 $font = '#EFEFEF';
 555                         break;
 556                 }
 557
 558                 $backtrace = debug_backtrace();
 559                 unset($backtrace[0]);
 560
 561                 $output = "\n<br />\n<table cellpadding=\"4\" cellspacing=\"1\" border=\"0\" width=\"500\" style=\"background-color: $color; color: black; font-family: Verdana, sans-serif; font-size: 12px;\">";
 562                 $output .= "\n<tr style=\"color: $font; text-align: left\">\n\t<td><strong>$prefix: $title</strong></td>\n</tr>";
 563                 $output .= "\n<tr style=\"background-color: #FFFFFF; text-align: left\">\n\t<td>$message</td>\n</tr>";
 564                 $output .= (($stack AND $GLOBALS['isso:null-framework']->debug) ? "\n<tr style=\"background-color: #FFFFFF; text-align: left\">\n\t<td><strong>Debug Stack:</strong> <pre>" . print_r($backtrace, true) . "</pre></td>\n</tr>" : '');
 565                 $output .= "\n</table>\n<br />\n";
 566
 567                 if ($return)
 568                 {
 569                         return $output;
 570                 }
 571                 else
 572                 {
 573                         print($output);
 574                 }
 575         }
 576
 577         // ###################################################################
 578         /**
 579         * Custom error handler for ISSO; only handle E_WARNING, E_NOTICE,
 580         * E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE
 581         *
 582         * @access       private
 583         *
 584         * @param        integer Error number
 585         * @param        string  Error message string
 586         * @param        string  File that contains the error
 587         * @param        string  The line number of the error
 588         * @param        string  The active symbol table at which point the error occurred
 589         */
 590         function _error_handler($errno, $errstr, $errfile, $errline)
 591         {
 592                 switch ($errno)
 593                 {
 594                         // Fatal
 595                         case E_USER_ERROR:
 596                                 $title = 'Fatal';
 597                                 $level = 3;
 598                                 if (!(ini_get('error_reporting') & E_USER_ERROR))
 599                                 {
 600                                         return;
 601                                 }
 602                         break;
 603
 604                         // Error
 605                         case E_USER_WARNING:
 606                                 $title = 'Warning';
 607                                 $level = 2;
 608                                 if (!(ini_get('error_reporting') & E_USER_WARNING) AND !(ini_get('error_reporting') & E_WARNING))
 609                                 {
 610                                         return;
 611                                 }
 612                         break;
 613
 614                         // Warning
 615                         case E_USER_NOTICE:
 616                         default:
 617                                 $title = 'Notice';
 618                                 $level = 1;
 619                                 if (!(ini_get('error_reporting') & E_USER_NOTICE) AND !(ini_get('error_reporting') & E_NOTICE))
 620                                 {
 621                                         return;
 622                                 }
 623                         break;
 624                 }
 625
 626                 $errstr .= " in <strong>$errfile</strong> on line <strong>$errline</strong>";
 627
 628                 $errstr = str_replace(array(getcwd(), dirname(getcwd())), '', $errstr);
 629
 630                 $this->message($title, $errstr, $level);
 631
 632                 if ($errno == E_USER_ERROR)
 633                 {
 634                         exit;
 635                 }
 636         }
 637
 638         // ###################################################################
 639         /**
 640         * Creates a table that explains the error reporting levels and their
 641         * state
 642         *
 643         * @access       public
 644         */
 645         function explain_error_reporting()
 646         {
 647                 $levels = array(
 648                         'E_ERROR'                       => E_ERROR,
 649                         'E_WARNING'                     => E_WARNING,
 650                         'E_PARSE'                       => E_PARSE,
 651                         'E_NOTICE'                      => E_NOTICE,
 652                         'E_CORE_ERROR'          => E_CORE_ERROR,
 653                         'E_CORE_WARNING'        => E_CORE_WARNING,
 654                         'E_COMPILE_ERROR'       => 64,
 655                         'E_COMPILE_WARNING'     => 128,
 656                         'E_USER_ERROR'          => E_USER_ERROR,
 657                         'E_USER_WARNING'        => E_USER_WARNING,
 658                         'E_USER_NOTICE'         => E_USER_NOTICE,
 659                         'E_ALL'                         => E_ALL,
 660                         'E_STRICT'                      => 2048
 661                 );
 662
 663                 $table = '<table cellspacing="0" cellpadding="2" border="0">';
 664
 665                 foreach ($levels AS $name => $value)
 666                 {
 667                         $table .= '
 668                         <tr>
 669                                 <td>' . $name . '</td>
 670                                 <td>' . (ini_get('error_reporting') & $value) . '</td>
 671                         </tr>';
 672                 }
 673
 674                 $table .= '
 675                 </table>';
 676
 677                 $this->message('Error Reporting', $table, 1);
 678         }
 679
 680         // ###################################################################
 681         /**
 682         * Logs a debug message for verbose output
 683         *
 684         * @access       public
 685         *
 686         * @param        string  Message
 687         */
 688         function debug($message)
 689         {
 690                 $this->debuginfo[] = $message;
 691         }
 692
 693         // ###################################################################
 694         /**
 695         * Recursive XSS cleaner
 696         *
 697         * @access       private
 698         *
 699         * @param        mixed   Unsanitized REQUEST data
 700         *
 701         * @return       mixed   Sanitized data
 702         */
 703         function _sanitize_input_recursive($data)
 704         {
 705                 foreach ($data AS $key => $value)
 706                 {
 707                         if (is_array($value))
 708                         {
 709                                 $data["$key"] = $this->_sanitize_input_recursive($value);
 710                         }
 711                         else
 712                         {
 713                                 $data["$key"] = $this->sanitize($value);
 714                         }
 715                 }
 716                 return $data;
 717         }
 718
 719         // ###################################################################
 720         /**
 721         * Simple way to protect against HTML attacks with Unicode support
 722         *
 723         * @access       public
 724         *
 725         * @param        string  Unsanitzed text
 726         *
 727         * @return       string  Properly protected text that only encodes potential threats
 728         */
 729         function sanitize($text)
 730         {
 731                 if ($this->magicquotes)
 732                 {
 733                         return str_replace(array('<', '>', '\"', '"'), array('&lt;', '&gt;', '&quot;', '&quot;'), $text);
 734                 }
 735                 else
 736                 {
 737                         return str_replace(array('<', '>', '"'), array('&lt;', '&gt;', '&quot;'), $text);
 738                 }
 739         }
 740
 741         // ###################################################################
 742         /**
 743         * Unicode-safe entity encoding system; similar to sanitize()
 744         *
 745         * @access       public
 746         *
 747         * @param        string  Unsanitized text
 748         *
 749         * @return       string  Unicode-safe sanitized text with entities preserved
 750         */
 751         function entity_encode($text)
 752         {
 753                 $text = str_replace('&', '&amp;', $text);
 754                 $text = $this->sanitize($text);
 755                 return $text;
 756         }
 757
 758         // ###################################################################
 759         /**
 760         * Takes text that has been processed for HTML and unsanitizes it
 761         *
 762         * @access       public
 763         *
 764         * @param        string  Text that needs to be turned back into HTML
 765         *
 766         * @return       string  Unsanitized text
 767         */
 768         function unsanitize($text)
 769         {
 770                 return str_replace(array('&lt;', '&gt;', '&quot;'), array('<', '>', '"'), $text);
 771         }
 772
 773         // ###################################################################
 774         /**
 775         * Smart addslashes() that only applies itself it the Magic Quotes GPC
 776         * is off. This should only be run on database query values.
 777         *
 778         * @access       public
 779         *
 780         * @param        string  Some string
 781         * @param        bool    If the data is binary; if so it'll be run through DB::escape_stringing()
 782         * @param        bool    Force magic quotes to be off
 783         *
 784         * @return       string  String that has slashes added
 785         */
 786         function escape($str, $binary = false, $force = true)
 787         {
 788                 if ($this->magicquotes AND !$force)
 789                 {
 790                         if (isset($this->modules[ISSO_DB_LAYER]) AND $binary)
 791                         {
 792                                 return $this->modules[ISSO_DB_LAYER]->escape_string(str_replace(array("\'", '\"'), array("'", '"'), $str));
 793                         }
 794                         return $str;
 795                 }
 796                 else
 797                 {
 798                         if (isset($this->modules[ISSO_DB_LAYER]) AND $binary)
 799                         {
 800                                 return $this->modules[ISSO_DB_LAYER]->escape_string($str);
 801                         }
 802                         return addslashes($str);
 803                 }
 804         }
 805
 806         // ###################################################################
 807         /**
 808         * Runs through all of the input data and sanitizes it.
 809         *
 810         * @access       public
 811         */
 812         function exec_sanitize_data()
 813         {
 814                 $this->in = $this->_sanitize_input_recursive(array_merge($_GET, $_POST, $_COOKIE));
 815         }
 816
 817         // ###################################################################
 818         /**
 819         * Sanitize function for something other than a string (which
 820         * everything is sanitized for if you use exec_sanitize_data(). Cleaned
 821         * data is placed back into $isso->in; this makes it so you don't have
 822         * to constantly intval() [etc.] data.
 823         *
 824         * @access       public
 825         *
 826         * @param        array   Array of elements to clean as varname => type
 827         */
 828         function input_clean_array($vars)
 829         {
 830                 foreach ($vars AS $varname => $type)
 831                 {
 832                         $this->input_clean($varname, $type);
 833                 }
 834         }
 835
 836         // ###################################################################
 837         /**
 838         * Sanitize function that does a single variable as oppoesd to an array
 839         * (see input_clean_array() for more details)
 840         *
 841         * @access       public
 842         *
 843         * @param        string  Variable name in $isso->in[]
 844         * @param        integer Sanitization type constant
 845         */
 846         function input_clean($varname, $type)
 847         {
 848                 if (isset($this->in["$varname"]))
 849                 {
 850                         $this->in["$varname"] = $this->clean($this->in["$varname"], $type);
 851                 }
 852                 else
 853                 {
 854                         $this->in["$varname"] = null;
 855                 }
 856
 857                 return $this->in["$varname"];
 858         }
 859
 860         // ###################################################################
 861         /**
 862         * Cleaning function that does the work for input_clean(); this is
 863         * moved here so it can be used to clean things that aren't in
 864         * $isso->in[]
 865         *
 866         * @access       public
 867         *
 868         * @param        mixed   Data
 869         * @param        integer Sanitization type constant
 870         *
 871         * @return       mixed   Cleaned data
 872         */
 873         function clean($value, $type)
 874         {
 875                 if ($type == TYPE_INT)
 876                 {
 877                         $value = intval($value);
 878                 }
 879                 else if ($type == TYPE_UINT)
 880                 {
 881                         $value = abs(intval($value));
 882                 }
 883                 else if ($type == TYPE_FLOAT)
 884                 {
 885                         $value = floatval($value);
 886                 }
 887                 else if ($type == TYPE_BOOL)
 888                 {
 889                         $value = (bool)$value;
 890                 }
 891                 else if ($type == TYPE_STR)
 892                 {
 893                         $value = $value;
 894                 }
 895                 else if ($type == TYPE_STRUN)
 896                 {
 897                         $value = $this->unsanitize($value);
 898                 }
 899                 else if ($type == TYPE_NOCLEAN)
 900                 {
 901                         $value = $value;
 902                 }
 903                 else
 904                 {
 905                         trigger_error('Invalid clean type `' . $type . '` specified', E_USER_ERROR);
 906                 }
 907
 908                 return $value;
 909         }
 910
 911         // ###################################################################
 912         /**
 913         * Checks to see if a POST refer is actually from us
 914         *
 915         * @access       public
 916         */
 917         function exec_referer_check()
 918         {
 919                 if ($_SERVER['REQUEST_METHOD'] == 'POST')
 920                 {
 921                         $host = ($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_ENV['HTTP_HOST'];
 922
 923                         if ($host AND $_SERVER['HTTP_REFERER'])
 924                         {
 925                                 $parts = parse_url($_SERVER['HTTP_REFERER']);
 926                                 $ourhost = $parts['host'] . (isset($parts['port']) ? ":$parts[port]" : '');
 927
 928                                 if ($ourhost != $host)
 929                                 {
 930                                         trigger_error('No external hosts are allowed to POST to this application', E_USER_ERROR);
 931                                 }
 932                                 $this->debug('remote post check = ok');
 933                         }
 934                         else
 935                         {
 936                                 $this->debug('remote post check = FAILED');
 937                         }
 938                 }
 939         }
 940
 941         // ###################################################################
 942         /**
 943         * Constructs a debug information box that contains various debugging
 944         * information points
 945         *
 946         * @access       public
 947         *
 948         * @param        bool    Show template information?
 949         *
 950         * @return       string  Debugging block
 951         */
 952         function construct_debug_block($dotemplates)
 953         {
 954                 $debug = '';
 955
 956                 if ($this->debug)
 957                 {
 958                         $debug = "\n<ul>";
 959
 960                         // templates
 961                         if ($dotemplates)
 962                         {
 963                                 // both template and template_fs are viable, so we need to determine the right one
 964                                 if ($this->is_loaded('template'))
 965                                 {
 966                                         $tpl_obj =& $this->modules['template'];
 967                                 }
 968                                 else if ($this->is_loaded('template_fs'))
 969                                 {
 970                                         $tpl_obj =& $this->modules['template_fs'];
 971                                 }
 972                                 else
 973                                 {
 974                                         $tpl_obj = null;
 975                                 }
 976
 977                                 $optlist = array();
 978                                 $usage = array();
 979                                 foreach ($tpl_obj->usage AS $name => $count)
 980                                 {
 981                                         if (in_array($name, $tpl_obj->uncached))
 982                                         {
 983                                                 $optlist[] = $name . '[' . $count . ']';
 984                                         }
 985                                         $usage[] = $name . " ($count)";
 986                                 }
 987
 988                                 $sizeof = sizeof($tpl_obj->uncached);
 989                                 if ($sizeof > 0)
 990                                 {
 991                                         $debug .= "\n\t<li><strong style=\"color: red\">Uncached Template(s):</strong> $sizeof ( " . implode(' &nbsp; ', $optlist) . " )</li>";
 992                                 }
 993                         }
 994
 995                         // source control
 996                         $scinfo = 'Not Under Source Control';
 997                         if (defined('SVN'))
 998                         {
 999                                 $scinfo = constant('SVN');
1000
1001                                 if (preg_match('#\$Id:?\s*\$#', $scinfo))
1002                                 {
1003                                         $scinfo = 'Not Under Source Control';
1004                                 }
1005                                 else
1006                                 {
1007                                         $scinfo = preg_replace('#\$' . '(Head)?URL: (.+?) \$#e', "end(explode('/', '\\2'))", $scinfo);
1008                                         $scinfo = preg_replace('#\$' . '(LastModified)?Revision: (.+?) \$#', 'SVN \\2', $scinfo);
1009                                         $scinfo = preg_replace('#\$' . 'Id: (.+?) ([0-9].+?) [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}(.+?) (.+?) \$#', '\\1 - SVN \\2', $scinfo);
1010                                 }
1011                         }
1012
1013                         $scinfo = trim($scinfo);
1014                         $debug .= "\n\t<li><strong>Source Control:</strong> $scinfo</li>";
1015
1016                         // query information
1017                         if (is_object($this->modules[ISSO_DB_LAYER]))
1018                         {
1019                                 $debug .= "\n\t<li><strong>Total Queries:</strong> " . sizeof($this->modules[ISSO_DB_LAYER]->history) . " (<a href=\"" . $this->sanitize($_SERVER['REQUEST_URI']) . ((strpos($_SERVER['REQUEST_URI'], '?') !== false) ? '&amp;query=1' : '?query=1') . "\">?</a>)</li>";
1020                         }
1021
1022                         // total execution time
1023                         if (defined('ISSO_MT_START'))
1024                         {
1025                                 $this->load('functions', 'functions');
1026                                 $debug .= "\n\t<li><strong>Total Execution Time:</strong> " . round($this->modules['functions']->fetch_microtime_diff(ISSO_MT_START), 10) . "</li>";
1027                         }
1028
1029                         // debug notices
1030                         $debug .= "\n\t<li>\n\t\t<select>\n\t\t\t<option>Debug Notices (" . sizeof($this->debuginfo) . ")</option>";
1031                         foreach ((array)$this->debuginfo AS $msg)
1032                         {
1033                                 $debug .= "\n\t\t\t<option>--- $msg</option>";
1034                         }
1035                         $debug .= "\n\t\t</select>\n\t</li>";
1036
1037                         // loaded modules
1038                         $modules = $this->show_modules(true);
1039                         $debug .= "\n\t<li>\n\t\t<select>\n\t\t\t<option>Loaded Modules (" . sizeof($modules) . ")</option>";
1040                         foreach ($modules AS $mod)
1041                         {
1042                                 $debug .= "\n\t\t\t<option>--- $mod</option>";
1043                         }
1044                         $debug .= "\n\t\t</select>\n\t</li>";
1045
1046                         // template usage
1047                         if ($dotemplates)
1048                         {
1049                                 $debug .= "\n\t<li>\n\t\t<select>\n\t\t\t<option>Template Usage (" . array_sum($tpl_obj->usage) . ")</option>";
1050                                 foreach ($usage AS $tpl)
1051                                 {
1052                                         $debug .= "\n\t\t\t<option>--- $tpl</option>";
1053                                 }
1054                                 $debug .= "\n\t\t</select>\n\t</li>";
1055                         }
1056
1057                         $debug .= "\n</ul>";
1058
1059                         $debug = "\n\n<!-- dev debug -->\n<div align=\"center\">\n\n<hr />\n" . $this->message('Debug Information', $debug, 1, true, false) . "\n</div>\n<!-- / dev debug -->\n\n";
1060                 }
1061
1062                 return $debug;
1063         }
1064 }
1065
1066 /*=====================================================================*\
1067 || ###################################################################
1068 || # $HeadURL$
1069 || # $Id$
1070 || ###################################################################
1071 \*=====================================================================*/
1072 ?>