kernel.php

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