--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/drupal/includes/session.inc Fri Aug 21 16:26:26 2009 +0000
@@ -0,0 +1,171 @@
+<?php
+// $Id: session.inc,v 1.44.2.6 2008/12/11 00:29:34 goba Exp $
+
+/**
+ * @file
+ * User session handling functions.
+ */
+
+function sess_open($save_path, $session_name) {
+ return TRUE;
+}
+
+function sess_close() {
+ return TRUE;
+}
+
+function sess_read($key) {
+ global $user;
+
+ // Write and Close handlers are called after destructing objects since PHP 5.0.5
+ // Thus destructors can use sessions but session handler can't use objects.
+ // So we are moving session closure before destructing objects.
+ register_shutdown_function('session_write_close');
+
+ // Handle the case of first time visitors and clients that don't store cookies (eg. web crawlers).
+ if (!isset($_COOKIE[session_name()])) {
+ $user = drupal_anonymous_user();
+ return '';
+ }
+
+ // Otherwise, if the session is still active, we have a record of the client's session in the database.
+ $user = db_fetch_object(db_query("SELECT u.*, s.* FROM {users} u INNER JOIN {sessions} s ON u.uid = s.uid WHERE s.sid = '%s'", $key));
+
+ // We found the client's session record and they are an authenticated user
+ if ($user && $user->uid > 0) {
+ // This is done to unserialize the data member of $user
+ $user = drupal_unpack($user);
+
+ // Add roles element to $user
+ $user->roles = array();
+ $user->roles[DRUPAL_AUTHENTICATED_RID] = 'authenticated user';
+ $result = db_query("SELECT r.rid, r.name FROM {role} r INNER JOIN {users_roles} ur ON ur.rid = r.rid WHERE ur.uid = %d", $user->uid);
+ while ($role = db_fetch_object($result)) {
+ $user->roles[$role->rid] = $role->name;
+ }
+ }
+ // We didn't find the client's record (session has expired), or they are an anonymous user.
+ else {
+ $session = isset($user->session) ? $user->session : '';
+ $user = drupal_anonymous_user($session);
+ }
+
+ return $user->session;
+}
+
+function sess_write($key, $value) {
+ global $user;
+
+ // If saving of session data is disabled or if the client doesn't have a session,
+ // and one isn't being created ($value), do nothing. This keeps crawlers out of
+ // the session table. This reduces memory and server load, and gives more useful
+ // statistics. We can't eliminate anonymous session table rows without breaking
+ // the throttle module and the "Who's Online" block.
+ if (!session_save_session() || ($user->uid == 0 && empty($_COOKIE[session_name()]) && empty($value))) {
+ return TRUE;
+ }
+
+ db_query("UPDATE {sessions} SET uid = %d, cache = %d, hostname = '%s', session = '%s', timestamp = %d WHERE sid = '%s'", $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time(), $key);
+ if (db_affected_rows()) {
+ // Last access time is updated no more frequently than once every 180 seconds.
+ // This reduces contention in the users table.
+ if ($user->uid && time() - $user->access > variable_get('session_write_interval', 180)) {
+ db_query("UPDATE {users} SET access = %d WHERE uid = %d", time(), $user->uid);
+ }
+ }
+ else {
+ // If this query fails, another parallel request probably got here first.
+ // In that case, any session data generated in this request is discarded.
+ @db_query("INSERT INTO {sessions} (sid, uid, cache, hostname, session, timestamp) VALUES ('%s', %d, %d, '%s', '%s', %d)", $key, $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time());
+ }
+
+ return TRUE;
+}
+
+/**
+ * Called when an anonymous user becomes authenticated or vice-versa.
+ */
+function sess_regenerate() {
+ $old_session_id = session_id();
+
+ // We code around http://bugs.php.net/bug.php?id=32802 by destroying
+ // the session cookie by setting expiration in the past (a negative
+ // value). This issue only arises in PHP versions before 4.4.0,
+ // regardless of the Drupal configuration.
+ // TODO: remove this when we require at least PHP 4.4.0
+ if (isset($_COOKIE[session_name()])) {
+ setcookie(session_name(), '', time() - 42000, '/');
+ }
+
+ session_regenerate_id();
+
+ db_query("UPDATE {sessions} SET sid = '%s' WHERE sid = '%s'", session_id(), $old_session_id);
+}
+
+/**
+ * Counts how many users have sessions. Can count either anonymous sessions or authenticated sessions.
+ *
+ * @param int $timestamp
+ * A Unix timestamp representing a point of time in the past.
+ * The default is 0, which counts all existing sessions.
+ * @param boolean $anonymous
+ * TRUE counts only anonymous users.
+ * FALSE counts only authenticated users.
+ * @return int
+ * The number of users with sessions.
+ */
+function sess_count($timestamp = 0, $anonymous = true) {
+ $query = $anonymous ? ' AND uid = 0' : ' AND uid > 0';
+ return db_result(db_query('SELECT COUNT(sid) AS count FROM {sessions} WHERE timestamp >= %d'. $query, $timestamp));
+}
+
+/**
+ * Called by PHP session handling with the PHP session ID to end a user's session.
+ *
+ * @param string $sid
+ * the session id
+ */
+function sess_destroy_sid($sid) {
+ db_query("DELETE FROM {sessions} WHERE sid = '%s'", $sid);
+}
+
+/**
+ * End a specific user's session
+ *
+ * @param string $uid
+ * the user id
+ */
+function sess_destroy_uid($uid) {
+ db_query('DELETE FROM {sessions} WHERE uid = %d', $uid);
+}
+
+function sess_gc($lifetime) {
+ // Be sure to adjust 'php_value session.gc_maxlifetime' to a large enough
+ // value. For example, if you want user sessions to stay in your database
+ // for three weeks before deleting them, you need to set gc_maxlifetime
+ // to '1814400'. At that value, only after a user doesn't log in after
+ // three weeks (1814400 seconds) will his/her session be removed.
+ db_query("DELETE FROM {sessions} WHERE timestamp < %d", time() - $lifetime);
+
+ return TRUE;
+}
+
+/**
+ * Determine whether to save session data of the current request.
+ *
+ * This function allows the caller to temporarily disable writing of session data,
+ * should the request end while performing potentially dangerous operations, such as
+ * manipulating the global $user object. See http://drupal.org/node/218104 for usage
+ *
+ * @param $status
+ * Disables writing of session data when FALSE, (re-)enables writing when TRUE.
+ * @return
+ * FALSE if writing session data has been disabled. Otherwise, TRUE.
+ */
+function session_save_session($status = NULL) {
+ static $save_session = TRUE;
+ if (isset($status)) {
+ $save_session = $status;
+ }
+ return ($save_session);
+}