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1 <?php 2 /* vim: set expandtab tabstop=4 shiftwidth=4: */ 3 // +----------------------------------------------------------------------+ 4 // | PHP Version 4 | 5 // +----------------------------------------------------------------------+ 6 // | Copyright (c) 1997-2003 The PHP Group | 7 // +----------------------------------------------------------------------+ 8 // | This source file is subject to version 2.02 of the PHP license, | 9 // | that is bundled with this package in the file LICENSE, and is | 10 // | available at through the world-wide-web at | 11 // | http://www.php.net/license/2_02.txt. | 12 // | If you did not receive a copy of the PHP license and are unable to | 13 // | obtain it through the world-wide-web, please send a note to | 14 // | license@php.net so we can mail you a copy immediately. | 15 // +----------------------------------------------------------------------+ 16 // | Authors: Martin Jansen <mj@php.net> | 17 // +----------------------------------------------------------------------+ 18 // 19 // $Id: Auth.php 8603 2007-05-02 08:48:55Z chregu $ 20 // 21 22 require_once 'PEAR.php'; 23 24 define('AUTH_IDLED', -1); 25 define('AUTH_EXPIRED', -2); 26 define('AUTH_WRONG_LOGIN', -3); 27 define('AUTH_SECURITY_BREACH', -4); 28 29 /** 30 * PEAR::Auth 31 * 32 * The PEAR::Auth class provides methods for creating an 33 * authentication system using PHP. 34 * 35 * @author Martin Jansen <mj@php.net> 36 * @package Auth 37 * @version $Revision: 1.77 $ 38 */ 39 class Auth { 40 41 /** 42 * Auth lifetime in seconds 43 * 44 * If this variable is set to 0, auth never expires 45 * 46 * @var integer 47 * @see setExpire(), checkAuth() 48 */ 49 var $expire = 0; 50 51 /** 52 * Has the auth session expired? 53 * 54 * @var bool 55 * @see checkAuth(), drawLogin() 56 */ 57 var $expired = false; 58 59 /** 60 * Maximum idletime in seconds 61 * 62 * The difference to $expire is, that the idletime gets 63 * refreshed each time checkAuth() is called. If this 64 * variable is set to 0, idletime is never checked. 65 * 66 * @var integer 67 * @see setIdle(), checkAuth() 68 */ 69 var $idle = 0; 70 71 /** 72 * Is the maximum idletime over? 73 * 74 * @var boolean 75 * @see checkAuth(), drawLogin(); 76 */ 77 var $idled = false; 78 79 /** 80 * Storage object 81 * 82 * @var object 83 * @see Auth(), validateLogin() 84 */ 85 var $storage = ''; 86 87 /** 88 * User-defined function that creates the login screen 89 * 90 * @var string 91 */ 92 var $loginFunction = ''; 93 94 /** 95 * Should the login form be displayed, and are users allowed to authenticate via this page? 96 * 97 * @var bool 98 * @see setShowlogin() 99 */ 100 var $showLogin = true; 101 102 /** 103 * Current authentication status 104 * 105 * @var string 106 */ 107 var $status = ''; 108 109 /** 110 * Username 111 * 112 * @var string 113 */ 114 var $username = ''; 115 116 /** 117 * Password 118 * 119 * @var string 120 */ 121 var $password = ''; 122 123 /** 124 * Login callback function name 125 * 126 * @var string 127 * @see setLoginCallback() 128 */ 129 var $loginCallback = ''; 130 131 /** 132 * Failed Login callback function name 133 * 134 * @var string 135 * @see setLoginFailedCallback() 136 */ 137 var $loginFailedCallback = ''; 138 139 /** 140 * Logout callback function name 141 * 142 * @var string 143 * @see setLogoutCallback() 144 */ 145 var $logoutCallback = ''; 146 147 /** 148 * Auth session-array name 149 * 150 * @var string 151 */ 152 var $_sessionName = '_authsession'; 153 154 /** 155 * Package Version 156 * 157 * @var string 158 */ 159 var $version = "1.3.0"; 160 161 /** 162 * Flag to use advanced security 163 * When set extra checks will be made to see if the 164 * user's IP or useragent have changed across requests. 165 * Turned off by default to preserve BC. 166 * 167 * @var boolean 168 */ 169 var $advancedsecurity = false; 170 171 /** 172 * Username key in POST array 173 * 174 * @var string 175 */ 176 var $_postUsername = 'username'; 177 178 /** 179 * Password key in POST array 180 * 181 * @var string 182 */ 183 var $_postPassword = 'password'; 184 185 /** 186 * A hash to hold various superglobals as reference 187 * @var array 188 */ 189 var $authdata; 190 191 var $idcol = 'id'; 192 193 // {{{ Constructor 194 195 /** 196 * Constructor 197 * 198 * Set up the storage driver. 199 * 200 * @param string Type of the storage driver 201 * @param mixed Additional options for the storage driver 202 * (example: if you are using DB as the storage 203 * driver, you have to pass the dsn string here) 204 * 205 * @param string Name of the function that creates the login form 206 * @param boolean Should the login form be displayed if neccessary? 207 * @return void 208 */ 209 function Auth($storageDriver, $options = '', $loginFunction = '', $showLogin = true) 210 { 211 if (!empty($options['sessionName'])) { 212 $this->_sessionName = $options['sessionName']; 213 unset($options['sessionName']); 214 } 215 216 if (!empty($options['postUsername'])) { 217 $this->_postUsername = $options['postUsername']; 218 unset($options['postUsername']); 219 } 220 221 if (!empty($options['postPassword'])) { 222 $this->_postPassword = $options['postPassword']; 223 unset($options['postPassword']); 224 } 225 226 if (!empty($options['idcol'])) { 227 $this->idcol = $options['idcol']; 228 } 229 230 if ($loginFunction != '' && is_callable($loginFunction)) { 231 $this->loginFunction = $loginFunction; 232 } 233 234 if (is_bool($showLogin)) { 235 $this->showLogin = $showLogin; 236 } 237 238 if (is_object($storageDriver)) { 239 $this->storage =& $storageDriver; 240 } else { 241 $this->storage = $this->_factory($storageDriver, $options); 242 } 243 // Pass a reference to auth to the container, ugly but works 244 // this is used by the DB container to use method setAuthData not staticaly. 245 $this->storage->_auth_obj =& $this; 246 247 } 248 249 // }}} 250 // {{{ _factory() 251 252 /** 253 * Return a storage driver based on $driver and $options 254 * 255 * @access private 256 * @static 257 * @param string $driver Type of storage class to return 258 * @param string $options Optional parameters for the storage class 259 * @return object Object Storage object 260 */ 261 function _factory($driver, $options = '') 262 { 263 $storage_path = 'Auth/Container/' . $driver . '.php'; 264 $storage_class = 'Auth_Container_' . $driver; 265 266 //require_once $storage_path; 267 return new $storage_class($options); 268 } 269 270 // }}} 271 // {{{ assignData() 272 273 /** 274 * Assign data from login form to internal values 275 * 276 * This function takes the values for username and password 277 * from $HTTP_POST_VARS/$_POST and assigns them to internal variables. 278 * If you wish to use another source apart from $HTTP_POST_VARS/$_POST, 279 * you have to derive this function. 280 * 281 * @access private 282 * @global $HTTP_POST_VARS, $_POST 283 * @see Auth 284 * @return void 285 */ 286 function assignData() 287 { 288 $post = &$this->_importGlobalVariable('post'); 289 290 if (isset($post[$this->_postUsername]) && $post[$this->_postUsername] != '') { 291 $this->username = (get_magic_quotes_gpc() == 1 ? stripslashes($post[$this->_postUsername]) : $post[$this->_postUsername]); 292 } 293 294 if (isset($post[$this->_postPassword]) && $post[$this->_postPassword] != '') { 295 $this->password = (get_magic_quotes_gpc() == 1 ? stripslashes($post[$this->_postPassword]) : $post[$this->_postPassword] ); 296 } 297 298 } 299 300 // }}} 301 // {{{ start() 302 303 /** 304 * Start new auth session 305 * 306 * @access public 307 * @return void 308 */ 309 function start() 310 { 311 312 $this->assignData(); 313 @session_start(); 314 315 if (!$this->checkAuth() && $this->showLogin) { 316 $this->login(); 317 } 318 } 319 320 // }}} 321 // {{{ login() 322 323 /** 324 * Login function 325 * 326 * @access private 327 * @return void 328 */ 329 function login() 330 { 331 $login_ok = false; 332 333 /** 334 * When the user has already entered a username, 335 * we have to validate it. 336 */ 337 if (!empty($this->username)) { 338 if (true === $this->storage->fetchData($this->username, $this->password)) { 339 $login_ok = true; 340 } 341 } 342 343 if (!empty($this->username) && $login_ok) { 344 $this->setAuth($this->username); 345 if (is_callable($this->loginCallback)) { 346 call_user_func($this->loginCallback,$this->username, @$this); 347 #call_user_func_array($this->loginFailedCallback, array($this->username, &$this)); 348 } 349 } 350 351 /** 352 * If the login failed or the user entered no username, 353 * output the login screen again. 354 */ 355 if (!empty($this->username) && !$login_ok) { 356 $this->status = AUTH_WRONG_LOGIN; 357 if (is_callable($this->loginFailedCallback)) { 358 call_user_func($this->loginFailedCallback,$this->username, @$this); 359 #call_user_func_array($this->loginFailedCallback, array($this->username, &$this)); 360 } 361 } 362 363 if ((empty($this->username) || !$login_ok) && $this->showLogin) { 364 $this->drawLogin($this->storage->activeUser); 365 return; 366 } 367 } 368 369 // }}} 370 // {{{ setExpire() 371 372 /** 373 * Set the maximum expire time 374 * 375 * @access public 376 * @param integer time in seconds 377 * @param bool add time to current expire time or not 378 * @return void 379 */ 380 function setExpire($time, $add = false) 381 { 382 if ($add) { 383 $this->expire += $time; 384 } else { 385 $this->expire = $time; 386 } 387 } 388 389 // }}} 390 // {{{ setIdle() 391 392 /** 393 * Set the maximum idle time 394 * 395 * @access public 396 * @param integer time in seconds 397 * @param bool add time to current maximum idle time or not 398 * @return void 399 */ 400 function setIdle($time, $add = false) 401 { 402 if ($add) { 403 $this->idle += $time; 404 } else { 405 $this->idle = $time; 406 } 407 } 408 409 // }}} 410 // {{{ setSessionname() 411 412 /** 413 * Set name of the session to a customized value. 414 * 415 * If you are using multiple instances of PEAR::Auth 416 * on the same domain, you can change the name of 417 * session per application via this function. 418 * 419 * @access public 420 * @param string New name for the session 421 * @return void 422 */ 423 function setSessionname($name = 'PHPSESSID') 424 { 425 @session_name($name); 426 } 427 428 // }}} 429 // {{{ setShowLogin() 430 431 /** 432 * Should the login form be displayed if neccessary? 433 * 434 * @access public 435 * @param bool show login form or not 436 * @return void 437 */ 438 function setShowLogin($showLogin = true) 439 { 440 $this->showLogin = $showLogin; 441 } 442 443 /** 444 * Register a callback function to be called on user login. 445 * The function will receive two parameters, the username and a reference to the auth object. 446 * 447 * @access public 448 * @param string callback function name 449 * @return void 450 * @see setLogoutCallback() 451 */ 452 function setLoginCallback($loginCallback) 453 { 454 $this->loginCallback = $loginCallback; 455 } 456 457 /** 458 * Register a callback function to be called on failed user login. 459 * The function will receive a single parameter, the username and a reference to the auth object. 460 * 461 * @access public 462 * @param string callback function name 463 * @return void 464 */ 465 function setFailedLoginCallback($loginFailedCallback) 466 { 467 $this->loginFailedCallback = $loginFailedCallback; 468 } 469 470 /** 471 * Register a callback function to be called on user logout. 472 * The function will receive three parameters, the username and a reference to the auth object. 473 * 474 * @access public 475 * @param string callback function name 476 * @return void 477 * @see setLoginCallback() 478 */ 479 function setLogoutCallback($logoutCallback) 480 { 481 $this->logoutCallback = $logoutCallback; 482 } 483 484 // }}} 485 // {{{ setAuthData() 486 487 /** 488 * Register additional information that is to be stored 489 * in the session. 490 * 491 * @access public 492 * @param string Name of the data field 493 * @param mixed Value of the data field 494 * @param boolean Should existing data be overwritten? (default 495 * is true) 496 * @return void 497 */ 498 function setAuthData($name, $value, $overwrite = true) 499 { 500 $session = &Auth::_importGlobalVariable('session'); 501 502 if (!empty($session[$this->_sessionName]['data'][$name]) && $overwrite == false) { 503 return; 504 } 505 $session[$this->_sessionName]['data'][$name] = $value; 506 } 507 508 // }}} 509 // {{{ getAuthData() 510 511 /** 512 * Get additional information that is stored in the session. 513 * 514 * If no value for the first parameter is passed, the method will 515 * return all data that is currently stored. 516 * 517 * @access public 518 * @param string Name of the data field 519 * @return mixed Value of the data field. 520 */ 521 function getAuthData($name = null) 522 { 523 $session = &Auth::_importGlobalVariable('session'); 524 if (!isset($session[$this->_sessionName]['data'])) { 525 return null; 526 } 527 528 if (is_null($name)) { 529 if (isset($session[$this->_sessionName]['data'])) { 530 return $session[$this->_sessionName]['data']; 531 } else { 532 return null; 533 } 534 } 535 if (isset($session[$this->_sessionName]['data'][$name])) { 536 return $session[$this->_sessionName]['data'][$name]; 537 } else { 538 return null; 539 } 540 } 541 542 // }}} 543 // {{{ setAuth() 544 545 /** 546 * Register variable in a session telling that the user 547 * has logged in successfully 548 * 549 * @access public 550 * @param string Username 551 * @return void 552 */ 553 function setAuth($username) 554 { 555 $session = &Auth::_importGlobalVariable('session'); 556 $server = &$this->_importGlobalVariable('server'); 557 558 if (!isset($session[$this->_sessionName]) && !isset($_SESSION)) { 559 session_register($this->_sessionName); 560 } 561 562 if (!isset($session[$this->_sessionName]) || !is_array($session[$this->_sessionName])) { 563 $session[$this->_sessionName] = array(); 564 } 565 566 if (!isset($session[$this->_sessionName]['data'])) { 567 $session[$this->_sessionName]['data'] = array(); 568 } 569 570 $session[$this->_sessionName]['sessionip'] = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : ''; 571 $session[$this->_sessionName]['sessionuseragent'] = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : ''; 572 573 $session[$this->_sessionName]['registered'] = true; 574 $session[$this->_sessionName]['username'] = $username; 575 $session[$this->_sessionName]['timestamp'] = time(); 576 $session[$this->_sessionName]['idle'] = time(); 577 } 578 579 function setAdvancedSecurity($flag=true) { 580 $this->advancedsecurity = $flag; 581 } 582 583 // }}} 584 // {{{ checkAuth() 585 586 /** 587 * Checks if there is a session with valid auth information. 588 * 589 * @access private 590 * @return boolean Whether or not the user is authenticated. 591 */ 592 function checkAuth() 593 { 594 $session = &$this->_importGlobalVariable('session'); 595 if ($this->advancedsecurity) { 596 // Check for ip change 597 if (isset($session[$this->_sessionName]['sessionip']) && isset($_SERVER['REMOTE_ADDR']) && $session[$this->_sessionName]['sessionip'] != $_SERVER['REMOTE_ADDR']) { 598 // Check if the IP of the user has changed, if so we assume a man in the middle attack and log him out 599 $this->expired = true; 600 $this->status = AUTH_SECURITY_BREACH; 601 $this->logout(); 602 return false; 603 } 604 605 // Check for useragent change 606 if (isset($session[$this->_sessionName]['sessionuseragent']) && isset($_SERVER['HTTP_USER_AGENT']) && $session[$this->_sessionName]['sessionuseragent'] != $_SERVER['HTTP_USER_AGENT']) { 607 // Check if the User-Agent of the user has changed, if so we assume a man in the middle attack and log him out 608 609 $this->expired = true; 610 $this->status = AUTH_SECURITY_BREACH; 611 return false; 612 $this->logout(); 613 } 614 615 } 616 617 if (isset($session[$this->_sessionName])) { 618 // Check if authentication session is expired 619 if ($this->expire > 0 && 620 isset($session[$this->_sessionName]['timestamp']) && 621 ($session[$this->_sessionName]['timestamp'] + $this->expire) < time()) { 622 $this->expired = true; 623 $this->status = AUTH_EXPIRED; 624 $this->logout(); 625 return false; 626 } 627 628 // Check if maximum idle time is reached 629 if ($this->idle > 0 && 630 isset($session[$this->_sessionName]['idle']) && 631 ($session[$this->_sessionName]['idle'] + $this->idle) < time()) { 632 633 634 $this->idled = true; 635 $this->status = AUTH_IDLED; 636 $this->logout(); 637 return false; 638 } 639 640 if (isset($session[$this->_sessionName]['registered']) && 641 isset($session[$this->_sessionName]['username']) && 642 $session[$this->_sessionName]['registered'] == true && 643 $session[$this->_sessionName]['username'] != '') { 644 645 Auth::updateIdle(); 646 647 return true; 648 } 649 } 650 651 return false; 652 } 653 654 // }}} 655 // {{{ getAuth() 656 657 /** 658 * Has the user been authenticated? 659 * 660 * @access public 661 * @return bool True if the user is logged in, otherwise false. 662 */ 663 function getAuth() 664 { 665 $session = &$this->_importGlobalVariable('session'); 666 if (!empty($session) && 667 (isset($session[$this->_sessionName]['registered']) && 668 $session[$this->_sessionName]['registered'] === true)) 669 { 670 return true; 671 } else { 672 return false; 673 } 674 } 675 676 // }}} 677 // {{{ drawLogin() 678 679 /** 680 * Draw the login form 681 * 682 * Normally you will not use this output in your application, 683 * because you can pass a different function name to the 684 * constructor. For more information on this, please 685 * consult the documentation. 686 * 687 * @access private 688 * @param string Username if already entered 689 * @return void 690 */ 691 function drawLogin($username = '') 692 { 693 if (is_callable($this->loginFunction)) { 694 call_user_func($this->loginFunction, $username, $this->status, @$this); 695 #call_user_func_array($this->loginFailedCallback, array($this->username, &$this)); 696 } else { 697 $server = &$this->_importGlobalVariable('server'); 698 699 echo '<center>'."\n"; 700 701 if (!empty($this->status) && $this->status == AUTH_EXPIRED) { 702 echo '<i>Your session has expired. Please login again!</i>'."\n"; 703 } else if (!empty($this->status) && $this->status == AUTH_IDLED) { 704 echo '<i>You have been idle for too long. Please login again!</i>'."\n"; 705 } else if (!empty ($this->status) && $this->status == AUTH_WRONG_LOGIN) { 706 echo '<i>Wrong login data!</i>'."\n"; 707 } else if (!empty ($this->status) && $this->status == AUTH_SECURITY_BREACH) { 708 echo '<i>Security problem. Either your IP or your User-Agent(Browser) has changed!</i>'."\n"; 709 } 710 PEAR::raiseError('You are using the built-in login screen of PEAR::Auth.<br />See the <a href="http://pear.php.net/manual/">manual</a> for details on how to create your own login function.', null); 711 712 echo '<form method="post" action="' . $server['PHP_SELF'] . '">'."\n"; 713 echo '<table border="0" cellpadding="2" cellspacing="0" summary="login form">'."\n"; 714 echo '<tr>'."\n"; 715 echo ' <td colspan="2" bgcolor="#eeeeee"><b>Login:</b></td>'."\n"; 716 echo '</tr>'."\n"; 717 echo '<tr>'."\n"; 718 echo ' <td>Username:</td>'."\n"; 719 echo ' <td><input type="text" name="username" value="' . $username . '" /></td>'."\n"; 720 echo '</tr>'."\n"; 721 echo '<tr>'."\n"; 722 echo ' <td>Password:</td>'."\n"; 723 echo ' <td><input type="password" name="password" /></td>'."\n"; 724 echo '</tr>'."\n"; 725 echo '<tr>'."\n"; 726 echo ' <td colspan="2" bgcolor="#eeeeee"><input type="submit" /></td>'."\n"; 727 echo '</tr>'."\n"; 728 echo '</table>'."\n"; 729 echo '</form>'."\n"; 730 echo '</center>'."\n\n"; 731 } 732 } 733 734 // }}} 735 // {{{ logout() 736 737 /** 738 * Logout function 739 * 740 * This function clears any auth tokens in the currently 741 * active session and executes the logout callback function, 742 * if any 743 * 744 * @access public 745 * @return void 746 */ 747 function logout() 748 { 749 $session = &$this->_importGlobalVariable('session'); 750 751 if (is_callable($this->logoutCallback)) { 752 call_user_func($this->logoutCallback, $session[$this->_sessionName]['username'], @$this); 753 #call_user_func_array($this->loginFailedCallback, array($this->username, &$this)); 754 } 755 756 $this->username = ''; 757 $this->password = ''; 758 759 $session[$this->_sessionName] = array(); 760 if (isset($_SESSION)) { 761 unset($session[$this->_sessionName]); 762 } else { 763 session_unregister($this->_sessionName); 764 } 765 } 766 767 // }}} 768 // {{{ updateIdle() 769 770 /** 771 * Update the idletime 772 * 773 * @access private 774 * @return void 775 */ 776 function updateIdle() 777 { 778 $session = &$this->_importGlobalVariable('session'); 779 $session[$this->_sessionName]['idle'] = time(); 780 } 781 782 // }}} 783 // {{{ getUsername() 784 785 /** 786 * Get the username 787 * 788 * @access public 789 * @return string 790 */ 791 function getUsername() 792 { 793 $session = &$this->_importGlobalVariable('session'); 794 if (!isset($session[$this->_sessionName]['username'])) { 795 return ''; 796 } 797 return $session[$this->_sessionName]['username']; 798 } 799 800 function getUserId() 801 { 802 $session = &$this->_importGlobalVariable('session'); 803 if (!isset($session[$this->_sessionName]['username'])) { 804 return ''; 805 } 806 return $session[$this->_sessionName]['data'][$this->idcol]; 807 } 808 809 // }}} 810 // {{{ getStatus() 811 812 /** 813 * Get the current status 814 * 815 * @access public 816 * @return string 817 */ 818 function getStatus() 819 { 820 return $this->status; 821 } 822 823 // }}} 824 // {{{ sessionValidThru() 825 826 /** 827 * Returns the time up to the session is valid 828 * 829 * @access public 830 * @return integer 831 */ 832 function sessionValidThru() 833 { 834 $session = &$this->_importGlobalVariable('session'); 835 if (!isset($session[$this->_sessionName]['idle'])) { 836 return 0; 837 } 838 return ($session[$this->_sessionName]['idle'] + $this->idle); 839 } 840 841 // }}} 842 // {{{ listUsers() 843 844 /** 845 * List all users that are currently available in the storage 846 * container 847 * 848 * @access public 849 * @return array 850 */ 851 function listUsers() 852 { 853 return $this->storage->listUsers(); 854 } 855 856 // }}} 857 // {{{ addUser() 858 859 /** 860 * Add user to the storage container 861 * 862 * @access public 863 * @param string Username 864 * @param string Password 865 * @param mixed Additional parameters 866 * @return mixed True on success, PEAR error object on error 867 * and AUTH_METHOD_NOT_SUPPORTED otherwise. 868 */ 869 function addUser($username, $password, $additional = '') 870 { 871 return $this->storage->addUser($username, $password, $additional); 872 } 873 874 // }}} 875 // {{{ removeUser() 876 877 /** 878 * Remove user from the storage container 879 * 880 * @access public 881 * @param string Username 882 * @return mixed True on success, PEAR error object on error 883 * and AUTH_METHOD_NOT_SUPPORTED otherwise. 884 */ 885 function removeUser($username) 886 { 887 return $this->storage->removeUser($username); 888 } 889 890 // }}} 891 // {{{ changePassword() 892 893 /** 894 * Change password for user in the storage container 895 * 896 * @access public 897 * @param string Username 898 * @param string The new password 899 * @return mixed True on success, PEAR error object on error 900 * and AUTH_METHOD_NOT_SUPPORTED otherwise. 901 */ 902 function changePassword($username, $password) 903 { 904 return $this->storage->changePassword($username, $password); 905 } 906 907 // }}} 908 // {{{ _importGlobalVariable() 909 910 /** 911 * Import variables from special namespaces. 912 * 913 * @access private 914 * @param string Type of variable (server, session, post) 915 * @return array 916 */ 917 function &_importGlobalVariable($variable) 918 { 919 $var = null; 920 921 switch (strtolower($variable)) { 922 case 'session' : 923 isset($_SESSION) ? $var = &$_SESSION : $var = &$GLOBALS['HTTP_SESSION_VARS'] ; 924 break; 925 926 case 'server' : 927 isset($_SERVER) ? $var = &$_SERVER : $var = &$GLOBALS['HTTP_SERVER_VARS']; 928 break; 929 930 case 'post' : 931 isset($_POST) ? $var = &$_POST : $var = &$GLOBALS['HTTP_POST_VARS']; 932 break; 933 934 case 'cookie' : 935 isset($_COOKIE) ? $var = &$_COOKIE : $var = &$GLOBALS['HTTP_COOKIE_VARS']; 936 break; 937 938 case 'get' : 939 isset($_GET) ? $var = &$_GET : $var = &$GLOBALS['HTTP_GET_VARS']; 940 break; 941 942 default: 943 break; 944 945 } 946 947 return $var; 948 } 949 950 // }}} 951 } 952 ?>
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| Généré le : Wed Nov 21 13:08:55 2007 | par Balluche grâce à PHPXref 0.7 |
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