hpdl
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<?php
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/*
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mattice
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$Id: session.php 757 2006-08-23 12:22:54Z hpdl $
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hpdl
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osCommerce, Open Source E-Commerce Solutions
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http://www.oscommerce.com
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hpdl
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Copyright (c) 2005 osCommerce
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hpdl
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Released under the GNU General Public License
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*/
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class osC_Session {
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/* Private variables */
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var $_cookie_parameters,
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$_is_started = false,
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$_id,
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$_name,
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$_save_path;
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// class constructor
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function osC_Session($name = 'sid') {
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$this->setName($name);
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$this->setSavePath(DIR_FS_WORK);
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$this->setCookieParameters();
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if (STORE_SESSIONS == 'mysql') {
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session_set_save_handler(array(&$this, '_open'),
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array(&$this, '_close'),
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array(&$this, '_read'),
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array(&$this, '_write'),
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array(&$this, '_destroy'),
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array(&$this, '_gc'));
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}
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}
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// class methods
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function start() {
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$sane_session_id = true;
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if (isset($_GET[$this->_name]) && (empty($_GET[$this->_name]) || (ctype_alnum($_GET[$this->_name]) === false))) {
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$sane_session_id = false;
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} elseif (isset($_POST[$this->_name]) && (empty($_POST[$this->_name]) || (ctype_alnum($_POST[$this->_name]) === false))) {
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$sane_session_id = false;
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} elseif (isset($_COOKIE[$this->_name]) && (empty($_COOKIE[$this->_name]) || (ctype_alnum($_COOKIE[$this->_name]) === false))) {
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$sane_session_id = false;
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}
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if ($sane_session_id === false) {
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if (isset($_COOKIE[$this->_name])) {
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setcookie($this->getName(), '', time()-42000, $this->getCookieParameters('path'), $this->getCookieParameters('domain'));
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}
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osc_redirect(osc_href_link(FILENAME_DEFAULT, null, 'NONSSL', false));
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} elseif (session_start()) {
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$this->setStarted(true);
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$this->setID();
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return true;
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}
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return false;
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}
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function hasStarted() {
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return $this->_is_started;
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}
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function close() {
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return session_write_close();
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}
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function destroy() {
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if (isset($_COOKIE[$this->_name])) {
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unset($_COOKIE[$this->_name]);
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}
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if (STORE_SESSIONS == '') {
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if (file_exists($this->_save_path . $this->_id)) {
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@unlink($this->_save_path . $this->_id);
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}
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}
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return session_destroy();
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}
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function recreate() {
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$session_backup = $_SESSION;
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$this->destroy();
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$this->osC_Session();
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$this->start();
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$_SESSION = $session_backup;
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unset($session_backup);
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}
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function getSavePath() {
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return $this->_save_path;
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}
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function getID() {
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return $this->_id;
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}
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function getName() {
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return $this->_name;
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}
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function setName($name) {
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session_name($name);
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$this->_name = session_name();
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}
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function setID() {
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$this->_id = session_id();
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}
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function setSavePath($path) {
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if (substr($path, -1) == '/') {
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$path = substr($path, 0, -1);
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}
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session_save_path($path);
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$this->_save_path = session_save_path();
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}
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function setStarted($state) {
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if ($state === true) {
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$this->_is_started = true;
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} else {
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$this->_is_started = false;
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}
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}
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function setCookieParameters($lifetime = 0, $path = false, $domain = false, $secure = false) {
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global $request_type;
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if ($path === false) {
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$path = (($request_type == 'NONSSL') ? HTTP_COOKIE_PATH : HTTPS_COOKIE_PATH);
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}
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if ($domain === false) {
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$domain = (($request_type == 'NONSSL') ? HTTP_COOKIE_DOMAIN : HTTPS_COOKIE_DOMAIN);
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}
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return session_set_cookie_params($lifetime, $path, $domain, $secure);
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}
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function getCookieParameters($key = '') {
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if (isset($this->_cookie_parameters) === false) {
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$this->_cookie_parameters = session_get_cookie_params();
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}
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if (isset($this->_cookie_parameters[$key])) {
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return $this->_cookie_parameters[$key];
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}
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return $this->_cookie_parameters;
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}
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function _open() {
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return true;
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}
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function _close() {
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return true;
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}
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function _read($key) {
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global $osC_Database;
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$Qsession = $osC_Database->query('select value from :table_sessions where sesskey = :sesskey and expiry > :expiry');
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$Qsession->bindRaw(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->bindRaw(':expiry', time());
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$Qsession->execute();
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if ($Qsession->numberOfRows() > 0) {
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$value = $Qsession->value('value');
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$Qsession->freeResult();
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return $value;
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}
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return false;
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}
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function _write($key, $value) {
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global $osC_Database;
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if (!$SESS_LIFE = get_cfg_var('session.gc_maxlifetime')) {
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$SESS_LIFE = 1440;
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}
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$expiry = time() + $SESS_LIFE;
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$Qsession = $osC_Database->query('select count(*) as total from :table_sessions where sesskey = :sesskey');
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$Qsession->bindRaw(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->execute();
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if ($Qsession->valueInt('total') > 0) {
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$Qsession = $osC_Database->query('update :table_sessions set expiry = :expiry, value = :value where sesskey = :sesskey');
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} else {
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$Qsession = $osC_Database->query('insert into :table_sessions values (:sesskey, :expiry, :value)');
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}
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$Qsession->bindRaw(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->bindValue(':expiry', $expiry);
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$Qsession->bindValue(':value', $value);
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if ($Qsession->execute()) {
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$write = true;
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} else {
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$write = false;
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}
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$Qsession->freeResult();
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return $write;
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}
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function _destroy($key) {
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global $osC_Database;
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$Qsession = $osC_Database->query('delete from :table_sessions where sesskey = :sesskey');
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$Qsession->bindRaw(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->execute();
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$Qsession->freeResult();
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}
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function _gc($maxlifetime) {
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global $osC_Database;
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$Qsession = $osC_Database->query('delete from :table_sessions where expiry < :expiry');
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$Qsession->bindRaw(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':expiry', time());
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$Qsession->execute();
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$Qsession->freeResult();
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}
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}
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?>
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