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session.php
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session.php
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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb;
use phpbb\filesystem\helper as filesystem_helper;
/**
* Session class
*/
class session
{
public $cookie_data = array();
public $page = array();
public $data = array();
public $browser = '';
public $referer = '';
public $forwarded_for = '';
public $host = '';
public $session_id = '';
public $ip = '';
public $load = 0;
public $time_now = 0;
public $update_session_page = true;
/**
* Extract current session page
*
* @param string $root_path current root path (phpbb_root_path)
* @return array
*/
static function extract_current_page($root_path)
{
global $request, $symfony_request;
$page_array = array();
// First of all, get the request uri...
$script_name = $request->escape($symfony_request->getScriptName(), true);
$args = $request->escape(explode('&', $symfony_request->getQueryString() ?? ''), true);
// If we are unable to get the script name we use REQUEST_URI as a failover and note it within the page array for easier support...
if (!$script_name)
{
$script_name = html_entity_decode($request->server('REQUEST_URI'), ENT_COMPAT);
$script_name = (($pos = strpos($script_name, '?')) !== false) ? substr($script_name, 0, $pos) : $script_name;
$page_array['failover'] = 1;
}
// Replace backslashes and doubled slashes (could happen on some proxy setups)
$script_name = str_replace(array('\\', '//'), '/', $script_name);
// Now, remove the sid and let us get a clean query string...
$use_args = [];
// Since some browser do not encode correctly we need to do this with some "special" characters...
// " -> %22, ' => %27, < -> %3C, > -> %3E
$find = ['"', "'", '<', '>', '"', '<', '>'];
$replace = ['%22', '%27', '%3C', '%3E', '%22', '%3C', '%3E'];
foreach ($args as $argument)
{
if (strpos($argument, 'sid=') === 0)
{
continue;
}
$use_args[] = (string) str_replace($find, $replace, $argument);
}
unset($args);
// The following examples given are for an request uri of {path to the phpbb directory}/adm/index.php?i=10&b=2
// The current query string
$query_string = trim(implode('&', $use_args));
// basenamed page name (for example: index.php)
$page_name = (substr($script_name, -1, 1) == '/') ? '' : basename($script_name);
$page_name = urlencode(htmlspecialchars($page_name, ENT_COMPAT));
$symfony_request_path = filesystem_helper::clean_path($symfony_request->getPathInfo());
if ($symfony_request_path !== '/')
{
$page_name .= str_replace('%2F', '/', urlencode($symfony_request_path));
}
if (substr($root_path, 0, 2) === './' && strpos($root_path, '..') === false)
{
$root_dirs = explode('/', str_replace('\\', '/', rtrim($root_path, '/')));
$page_dirs = explode('/', str_replace('\\', '/', '.'));
}
else
{
// current directory within the phpBB root (for example: adm)
$root_dirs = explode('/', str_replace('\\', '/', filesystem_helper::realpath($root_path)));
$page_dirs = explode('/', str_replace('\\', '/', filesystem_helper::realpath('./')));
}
$intersection = array_intersect_assoc($root_dirs, $page_dirs);
$root_dirs = array_diff_assoc($root_dirs, $intersection);
$page_dirs = array_diff_assoc($page_dirs, $intersection);
$page_dir = str_repeat('../', count($root_dirs)) . implode('/', $page_dirs);
if ($page_dir && substr($page_dir, -1, 1) == '/')
{
$page_dir = substr($page_dir, 0, -1);
}
// Current page from phpBB root (for example: adm/index.php?i=10&b=2)
$page = (($page_dir) ? $page_dir . '/' : '') . $page_name;
if ($query_string)
{
$page .= '?' . $query_string;
}
// The script path from the webroot to the current directory (for example: /phpBB3/adm/) : always prefixed with / and ends in /
$script_path = $symfony_request->getBasePath();
// The script path from the webroot to the phpBB root (for example: /phpBB3/)
$script_dirs = explode('/', $script_path);
array_splice($script_dirs, -count($page_dirs));
$root_script_path = implode('/', $script_dirs) . (count($root_dirs) ? '/' . implode('/', $root_dirs) : '');
// We are on the base level (phpBB root == webroot), lets adjust the variables a bit...
if (!$root_script_path)
{
$root_script_path = ($page_dir) ? str_replace($page_dir, '', $script_path) : $script_path;
}
$script_path .= (substr($script_path, -1, 1) == '/') ? '' : '/';
$root_script_path .= (substr($root_script_path, -1, 1) == '/') ? '' : '/';
$forum_id = $request->variable('f', 0);
// maximum forum id value is maximum value of mediumint unsigned column
$forum_id = ($forum_id > 0 && $forum_id < 16777215) ? $forum_id : 0;
$page_array += array(
'page_name' => $page_name,
'page_dir' => $page_dir,
'query_string' => $query_string,
'script_path' => str_replace(' ', '%20', htmlspecialchars($script_path, ENT_COMPAT)),
'root_script_path' => str_replace(' ', '%20', htmlspecialchars($root_script_path, ENT_COMPAT)),
'page' => $page,
'forum' => $forum_id,
);
return $page_array;
}
/**
* Get valid hostname/port. HTTP_HOST is used, SERVER_NAME if HTTP_HOST not present.
*/
function extract_current_hostname()
{
global $config, $request;
// Get hostname
$host = html_entity_decode($request->header('Host', $request->server('SERVER_NAME')), ENT_COMPAT);
// Should be a string and lowered
$host = (string) strtolower($host);
// If host is equal the cookie domain or the server name (if config is set), then we assume it is valid
if ((isset($config['cookie_domain']) && $host === $config['cookie_domain']) || (isset($config['server_name']) && $host === $config['server_name']))
{
return $host;
}
// Is the host actually a IP? If so, we use the IP... (IPv4)
if (long2ip(ip2long($host)) === $host)
{
return $host;
}
// Now return the hostname (this also removes any port definition). The http:// is prepended to construct a valid URL, hosts never have a scheme assigned
$host = @parse_url('http://' . $host);
$host = (!empty($host['host'])) ? $host['host'] : '';
// Remove any portions not removed by parse_url (#)
$host = str_replace('#', '', $host);
// If, by any means, the host is now empty, we will use a "best approach" way to guess one
if (empty($host))
{
if (!empty($config['server_name']))
{
$host = $config['server_name'];
}
else if (!empty($config['cookie_domain']))
{
$host = (strpos($config['cookie_domain'], '.') === 0) ? substr($config['cookie_domain'], 1) : $config['cookie_domain'];
}
else
{
// Set to OS hostname or localhost
$host = (function_exists('php_uname')) ? php_uname('n') : 'localhost';
}
}
// It may be still no valid host, but for sure only a hostname (we may further expand on the cookie domain... if set)
return $host;
}
/**
* Setup basic user-specific items (style, language, ...)
*
* @param array|string|false $lang_set Lang set(s) to include, false if none shall be included
* @param int|false $style_id Style ID to load, false to load default style
*
* @throws \RuntimeException When called on session and not user instance
*
* @return void
*/
public function setup($lang_set = false, $style_id = false)
{
throw new \RuntimeException('Calling setup on session class is not supported.');
}
/**
* Start session management
*
* This is where all session activity begins. We gather various pieces of
* information from the client and server. We test to see if a session already
* exists. If it does, fine and dandy. If it doesn't we'll go on to create a
* new one ... pretty logical heh? We also examine the system load (if we're
* running on a system which makes such information readily available) and
* halt if it's above an admin definable limit.
*
* @param bool $update_session_page if true the session page gets updated.
* This can be set to circumvent certain scripts to update the users last visited page.
*/
function session_begin($update_session_page = true)
{
global $phpEx, $SID, $_SID, $_EXTRA_URL, $db, $config, $phpbb_root_path;
global $request, $phpbb_container, $user, $phpbb_log, $phpbb_dispatcher;
// Give us some basic information
$this->time_now = time();
$this->cookie_data = array('u' => 0, 'k' => '');
$this->update_session_page = $update_session_page;
$this->browser = $request->header('User-Agent');
$this->referer = $request->header('Referer');
$this->forwarded_for = $request->header('X-Forwarded-For');
$this->host = $this->extract_current_hostname();
$this->page = $this->extract_current_page($phpbb_root_path);
// if the forwarded for header shall be checked we have to validate its contents
if ($config['forwarded_for_check'])
{
$this->forwarded_for = preg_replace('# {2,}#', ' ', str_replace(',', ' ', $this->forwarded_for));
// split the list of IPs
$ips = explode(' ', $this->forwarded_for);
foreach ($ips as $ip)
{
if (!filter_var($ip, FILTER_VALIDATE_IP))
{
// contains invalid data, don't use the forwarded for header
$this->forwarded_for = '';
break;
}
}
}
else
{
$this->forwarded_for = '';
}
if ($request->is_set($config['cookie_name'] . '_sid', \phpbb\request\request_interface::COOKIE) || $request->is_set($config['cookie_name'] . '_u', \phpbb\request\request_interface::COOKIE))
{
$this->cookie_data['u'] = $request->variable($config['cookie_name'] . '_u', 0, false, \phpbb\request\request_interface::COOKIE);
$this->cookie_data['k'] = $request->variable($config['cookie_name'] . '_k', '', false, \phpbb\request\request_interface::COOKIE);
$this->session_id = $request->variable($config['cookie_name'] . '_sid', '', false, \phpbb\request\request_interface::COOKIE);
$SID = '?sid=';
$_SID = '';
if (empty($this->session_id) && $phpbb_container->getParameter('session.force_sid'))
{
$this->session_id = $_SID = $request->variable('sid', '');
$SID = '?sid=' . $this->session_id;
$this->cookie_data = array('u' => 0, 'k' => '');
}
}
else
{
$this->session_id = $_SID = $phpbb_container->getParameter('session.force_sid') ? $request->variable('sid', '') : '';
$SID = '?sid=' . $this->session_id;
}
$_EXTRA_URL = array();
// Why no forwarded_for et al? Well, too easily spoofed. With the results of my recent requests
// it's pretty clear that in the majority of cases you'll at least be left with a proxy/cache ip.
$ip = html_entity_decode($request->server('REMOTE_ADDR'), ENT_COMPAT);
$ip = preg_replace('# {2,}#', ' ', str_replace(',', ' ', $ip));
/**
* Event to alter user IP address
*
* @event core.session_ip_after
* @var string ip REMOTE_ADDR
* @since 3.1.10-RC1
*/
$vars = array('ip');
extract($phpbb_dispatcher->trigger_event('core.session_ip_after', compact($vars)));
// split the list of IPs
$ips = explode(' ', trim($ip));
// Default IP if REMOTE_ADDR is invalid
$this->ip = '127.0.0.1';
foreach ($ips as $ip)
{
// Normalise IP address
$ip = phpbb_ip_normalise($ip);
if ($ip === false)
{
// IP address is invalid.
break;
}
// IP address is valid.
$this->ip = $ip;
}
$this->load = false;
// Load limit check (if applicable)
if ($config['limit_load'] || $config['limit_search_load'])
{
if ((function_exists('sys_getloadavg') && $load = sys_getloadavg()) || ($load = explode(' ', @file_get_contents('/proc/loadavg'))))
{
$this->load = array_slice($load, 0, 1);
$this->load = floatval($this->load[0]);
}
else
{
$config->set('limit_load', '0');
$config->set('limit_search_load', '0');
}
}
// if session id is set
if (!empty($this->session_id))
{
$sql = 'SELECT u.*, s.*
FROM ' . SESSIONS_TABLE . ' s, ' . USERS_TABLE . " u
WHERE s.session_id = '" . $db->sql_escape($this->session_id) . "'
AND u.user_id = s.session_user_id";
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
// Did the session exist in the DB?
if (isset($this->data['user_id']))
{
// Validate IP length according to admin ... enforces an IP
// check on bots if admin requires this
// $quadcheck = ($config['ip_check_bot'] && $this->data['user_type'] & USER_BOT) ? 4 : $config['ip_check'];
if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false)
{
$s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']);
$u_ip = short_ipv6($this->ip, $config['ip_check']);
}
else
{
$s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check']));
$u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check']));
}
$s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : '';
$u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : '';
$s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : '';
$u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : '';
// referer checks
// The @ before $config['referer_validation'] suppresses notices present while running the updater
$check_referer_path = (@$config['referer_validation'] == REFERER_VALIDATE_PATH);
$referer_valid = true;
// we assume HEAD and TRACE to be foul play and thus only whitelist GET
if (@$config['referer_validation'] && strtolower($request->server('REQUEST_METHOD')) !== 'get')
{
$referer_valid = $this->validate_referer($check_referer_path);
}
if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for && $referer_valid)
{
$session_expired = false;
// Check whether the session is still valid if we have one
/* @var $provider_collection \phpbb\auth\provider_collection */
$provider_collection = $phpbb_container->get('auth.provider_collection');
$provider = $provider_collection->get_provider();
if (!($provider instanceof \phpbb\auth\provider\provider_interface))
{
throw new \RuntimeException($provider . ' must implement \phpbb\auth\provider\provider_interface');
}
$ret = $provider->validate_session($this->data);
if ($ret !== null && !$ret)
{
$session_expired = true;
}
if (!$session_expired)
{
// Check the session length timeframe if autologin is not enabled.
// Else check the autologin length... and also removing those having autologin enabled but no longer allowed board-wide.
if (!$this->data['session_autologin'])
{
if ($this->data['session_time'] < $this->time_now - ((int) $config['session_length'] + 60))
{
$session_expired = true;
}
}
else if (!$config['allow_autologin'] || ($config['max_autologin_time'] && $this->data['session_time'] < $this->time_now - (86400 * (int) $config['max_autologin_time']) + 60))
{
$session_expired = true;
}
}
if (!$session_expired)
{
$this->data['is_registered'] = ($this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false;
$this->data['is_bot'] = (!$this->data['is_registered'] && $this->data['user_id'] != ANONYMOUS) ? true : false;
$this->data['user_lang'] = basename($this->data['user_lang']);
// Is user banned? Are they excluded? Won't return on ban, exists within method
$this->check_ban_for_current_session($config);
// Update user last active time accordingly, but in a minute or so
if ($this->time_now - (int) $this->data['user_last_active'] > 60)
{
$this->update_last_active_time();
}
return true;
}
}
else
{
// Added logging temporarily to help debug bugs...
if ($phpbb_container->getParameter('session.log_errors') && $this->data['user_id'] != ANONYMOUS)
{
if ($referer_valid)
{
$phpbb_log->add('critical', $user->data['user_id'], $user->ip, 'LOG_IP_BROWSER_FORWARDED_CHECK', false, array(
$u_ip,
$s_ip,
$u_browser,
$s_browser,
htmlspecialchars($u_forwarded_for, ENT_COMPAT),
htmlspecialchars($s_forwarded_for, ENT_COMPAT)
));
}
else
{
$phpbb_log->add('critical', $user->data['user_id'], $user->ip, 'LOG_REFERER_INVALID', false, array($this->referer));
}
}
}
}
}
// If we reach here then no (valid) session exists. So we'll create a new one
return $this->session_create();
}
/**
* Create a new session
*
* If upon trying to start a session we discover there is nothing existing we
* jump here. Additionally this method is called directly during login to regenerate
* the session for the specific user. In this method we carry out a number of tasks;
* garbage collection, (search)bot checking, banned user comparison. Basically
* though this method will result in a new session for a specific user.
*/
function session_create($user_id = false, $set_admin = false, $persist_login = false, $viewonline = true)
{
global $SID, $_SID, $db, $config, $cache, $phpbb_container, $phpbb_dispatcher;
$this->data = array();
/* Garbage collection ... remove old sessions updating user information
// if necessary. It means (potentially) 11 queries but only infrequently
if ($this->time_now > $config['session_last_gc'] + $config['session_gc'])
{
$this->session_gc();
}*/
// Do we allow autologin on this board? No? Then override anything
// that may be requested here
if (!$config['allow_autologin'])
{
$this->cookie_data['k'] = $persist_login = false;
}
/**
* Here we do a bot check, oh er saucy! No, not that kind of bot
* check. We loop through the list of bots defined by the admin and
* see if we have any useragent and/or IP matches. If we do, this is a
* bot, act accordingly
*/
$bot = false;
$active_bots = $cache->obtain_bots();
foreach ($active_bots as $row)
{
if ($row['bot_agent'] && preg_match('#' . str_replace('\*', '.*?', preg_quote($row['bot_agent'], '#')) . '#i', $this->browser))
{
$bot = (int) $row['user_id'];
}
// If ip is supplied, we will make sure the ip is matching too...
if ($row['bot_ip'] && ($bot || !$row['bot_agent']))
{
// Set bot to false, then we only have to set it to true if it is matching
$bot = false;
foreach (explode(',', $row['bot_ip']) as $bot_ip)
{
$bot_ip = trim($bot_ip);
if (!$bot_ip)
{
continue;
}
if (strpos($this->ip, $bot_ip) === 0)
{
$bot = (int) $row['user_id'];
break;
}
}
}
if ($bot)
{
break;
}
}
/* @var $provider_collection \phpbb\auth\provider_collection */
$provider_collection = $phpbb_container->get('auth.provider_collection');
$provider = $provider_collection->get_provider();
$this->data = $provider->autologin();
if ($user_id !== false && isset($this->data['user_id']) && $this->data['user_id'] != $user_id)
{
$this->data = array();
}
if (isset($this->data['user_id']))
{
$this->cookie_data['k'] = '';
$this->cookie_data['u'] = $this->data['user_id'];
}
// If we're presented with an autologin key we'll join against it.
// Else if we've been passed a user_id we'll grab data based on that
if (isset($this->cookie_data['k']) && $this->cookie_data['k'] && $this->cookie_data['u'] && empty($this->data))
{
$sql = 'SELECT u.*
FROM ' . USERS_TABLE . ' u, ' . SESSIONS_KEYS_TABLE . ' k
WHERE u.user_id = ' . (int) $this->cookie_data['u'] . '
AND u.user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ")
AND k.user_id = u.user_id
AND k.key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'";
$result = $db->sql_query($sql);
$user_data = $db->sql_fetchrow($result);
if ($user_id === false || (isset($user_data['user_id']) && $user_id == $user_data['user_id']))
{
$this->data = $user_data;
$bot = false;
}
$db->sql_freeresult($result);
}
if ($user_id !== false && empty($this->data))
{
$this->cookie_data['k'] = '';
$this->cookie_data['u'] = $user_id;
$sql = 'SELECT *
FROM ' . USERS_TABLE . '
WHERE user_id = ' . (int) $this->cookie_data['u'] . '
AND user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ')';
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
$bot = false;
}
// Bot user, if they have a SID in the Request URI we need to get rid of it
// otherwise they'll index this page with the SID, duplicate content oh my!
if ($bot && isset($_GET['sid']))
{
send_status_line(301, 'Moved Permanently');
redirect(build_url(array('sid')));
}
// If no data was returned one or more of the following occurred:
// Key didn't match one in the DB
// User does not exist
// User is inactive
// User is bot
if (!is_array($this->data) || !count($this->data))
{
$this->cookie_data['k'] = '';
$this->cookie_data['u'] = ($bot) ? $bot : ANONYMOUS;
if (!$bot)
{
$sql = 'SELECT *
FROM ' . USERS_TABLE . '
WHERE user_id = ' . (int) $this->cookie_data['u'];
}
else
{
// We give bots always the same session if it is not yet expired.
$sql = 'SELECT u.*, s.*
FROM ' . USERS_TABLE . ' u
LEFT JOIN ' . SESSIONS_TABLE . ' s ON (s.session_user_id = u.user_id)
WHERE u.user_id = ' . (int) $bot;
}
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
}
if ($this->data['user_id'] != ANONYMOUS && !$bot)
{
$this->data['session_last_visit'] = (isset($this->data['session_time']) && $this->data['session_time']) ? $this->data['session_time'] : (($this->data['user_lastvisit']) ? $this->data['user_lastvisit'] : time());
}
else
{
$this->data['session_last_visit'] = $this->time_now;
}
// Force user id to be integer...
$this->data['user_id'] = (int) $this->data['user_id'];
// At this stage we should have a filled data array, defined cookie u and k data.
// data array should contain recent session info if we're a real user and a recent
// session exists in which case session_id will also be set
// Is user banned? Are they excluded? Won't return on ban, exists within method
$this->check_ban_for_current_session($config);
$this->data['is_registered'] = (!$bot && $this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false;
$this->data['is_bot'] = ($bot) ? true : false;
// If our friend is a bot, we re-assign a previously assigned session
if ($this->data['is_bot'] && $bot == $this->data['user_id'] && $this->data['session_id'])
{
// Only assign the current session if the ip, browser and forwarded_for match...
if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false)
{
$s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']);
$u_ip = short_ipv6($this->ip, $config['ip_check']);
}
else
{
$s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check']));
$u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check']));
}
$s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : '';
$u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : '';
$s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : '';
$u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : '';
if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for)
{
$this->session_id = $this->data['session_id'];
// Only update session DB a minute or so after last update or if page changes
if ($this->time_now - $this->data['session_time'] > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page']))
{
// Update the last visit time
$this->update_user_lastvisit();
}
$SID = '?sid=';
$_SID = '';
return true;
}
else
{
// If the ip and browser does not match make sure we only have one bot assigned to one session
$db->sql_query('DELETE FROM ' . SESSIONS_TABLE . ' WHERE session_user_id = ' . $this->data['user_id']);
}
}
$session_autologin = (($this->cookie_data['k'] || $persist_login) && $this->data['is_registered']) ? true : false;
$set_admin = ($set_admin && $this->data['is_registered']) ? true : false;
// Create or update the session
$sql_ary = array(
'session_user_id' => (int) $this->data['user_id'],
'session_start' => (int) $this->time_now,
'session_last_visit' => (int) $this->data['session_last_visit'],
'session_time' => (int) $this->time_now,
'session_browser' => (string) trim(substr($this->browser, 0, 149)),
'session_forwarded_for' => (string) $this->forwarded_for,
'session_ip' => (string) $this->ip,
'session_autologin' => ($session_autologin) ? 1 : 0,
'session_admin' => ($set_admin) ? 1 : 0,
'session_viewonline' => ($viewonline) ? 1 : 0,
);
if ($this->update_session_page)
{
$sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199);
$sql_ary['session_forum_id'] = $this->page['forum'];
}
$db->sql_return_on_error(true);
$sql = 'DELETE
FROM ' . SESSIONS_TABLE . '
WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\'
AND session_user_id = ' . ANONYMOUS;
if (!defined('IN_ERROR_HANDLER') && (!$this->session_id || !$db->sql_query($sql) || !$db->sql_affectedrows()))
{
// Limit new sessions in 1 minute period (if required)
if (empty($this->data['session_time']) && $config['active_sessions'])
{
// $db->sql_return_on_error(false);
$sql = 'SELECT COUNT(session_id) AS sessions
FROM ' . SESSIONS_TABLE . '
WHERE session_time >= ' . ($this->time_now - 60);
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ((int) $row['sessions'] > (int) $config['active_sessions'])
{
send_status_line(503, 'Service Unavailable');
trigger_error('BOARD_UNAVAILABLE');
}
}
}
// Since we re-create the session id here, the inserted row must be unique. Therefore, we display potential errors.
// Commented out because it will not allow forums to update correctly
// $db->sql_return_on_error(false);
// Something quite important: session_page always holds the *last* page visited, except for the *first* visit.
// We are not able to simply have an empty session_page btw, therefore we need to tell phpBB how to detect this special case.
// If the session id is empty, we have a completely new one and will set an "identifier" here. This identifier is able to be checked later.
if (empty($this->data['session_id']))
{
// This is a temporary variable, only set for the very first visit
$this->data['session_created'] = true;
}
$this->session_id = $this->data['session_id'] = md5(unique_id());
$sql_ary['session_id'] = (string) $this->session_id;
$sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199);
$sql_ary['session_forum_id'] = $this->page['forum'];
$sql = 'INSERT INTO ' . SESSIONS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
$db->sql_query($sql);
$db->sql_return_on_error(false);
// Regenerate autologin/persistent login key
if ($session_autologin)
{
$this->set_login_key();
}
// refresh data
if ($phpbb_container->getParameter('session.force_sid'))
{
$SID = '?sid=' . $this->session_id;
$_SID = $this->session_id;
}
$this->data = array_merge($this->data, $sql_ary);
if (!$bot)
{
$cookie_expire = $this->time_now + (($config['max_autologin_time']) ? 86400 * (int) $config['max_autologin_time'] : 31536000);
$this->set_cookie('u', $this->cookie_data['u'], $cookie_expire);
$this->set_cookie('k', $this->cookie_data['k'], $cookie_expire);
$this->set_cookie('sid', $this->session_id, $cookie_expire);
unset($cookie_expire);
$sql = 'SELECT COUNT(session_id) AS sessions
FROM ' . SESSIONS_TABLE . '
WHERE session_user_id = ' . (int) $this->data['user_id'] . '
AND session_time >= ' . (int) ($this->time_now - (max((int) $config['session_length'], (int) $config['form_token_lifetime'])));
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ((int) $row['sessions'] <= 1 || empty($this->data['user_form_salt']))
{
$this->data['user_form_salt'] = unique_id();
// Update the form key
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_form_salt = \'' . $db->sql_escape($this->data['user_form_salt']) . '\',
user_last_active = ' . (int) $this->time_now . '
WHERE user_id = ' . (int) $this->data['user_id'];
$db->sql_query($sql);
}
else
{
$this->update_last_active_time();
}
}
else
{
$this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now;
$this->update_user_lastvisit();
if ($phpbb_container->getParameter('session.force_sid'))
{
$SID = '?sid=';
$_SID = '';
}
}
$session_data = $sql_ary;
/**
* Event to send new session data to extension
* Read-only event
*
* @event core.session_create_after
* @var array session_data Associative array of session keys to be updated
* @since 3.1.6-RC1
*/
$vars = array('session_data');
extract($phpbb_dispatcher->trigger_event('core.session_create_after', compact($vars)));
unset($session_data);
return true;
}
/**
* Kills a session
*
* This method does what it says on the tin. It will delete a pre-existing session.
* It resets cookie information (destroying any autologin key within that cookie data)
* and update the users information from the relevant session data. It will then
* grab guest user information.
*/
function session_kill($new_session = true)
{
global $SID, $_SID, $db, $phpbb_container, $phpbb_dispatcher;
$sql = 'DELETE FROM ' . SESSIONS_TABLE . "
WHERE session_id = '" . $db->sql_escape($this->session_id) . "'
AND session_user_id = " . (int) $this->data['user_id'];
$db->sql_query($sql);
$user_id = (int) $this->data['user_id'];
$session_id = $this->session_id;
/**
* Event to send session kill information to extension
* Read-only event
*
* @event core.session_kill_after
* @var int user_id user_id of the session user.
* @var string session_id current user's session_id
* @var bool new_session should we create new session for user
* @since 3.1.6-RC1
*/
$vars = array('user_id', 'session_id', 'new_session');
extract($phpbb_dispatcher->trigger_event('core.session_kill_after', compact($vars)));
unset($user_id);
unset($session_id);
// Allow connecting logout with external auth method logout
/* @var $provider_collection \phpbb\auth\provider_collection */
$provider_collection = $phpbb_container->get('auth.provider_collection');
$provider = $provider_collection->get_provider();
$provider->logout($this->data, $new_session);
if ($this->data['user_id'] != ANONYMOUS)
{
// Delete existing session, update last visit info first!
if (!isset($this->data['session_time']))
{
$this->data['session_time'] = time();
}
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_lastvisit = ' . (int) $this->data['session_time'] . '
WHERE user_id = ' . (int) $this->data['user_id'];
$db->sql_query($sql);
if ($this->cookie_data['k'])
{
$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
WHERE user_id = ' . (int) $this->data['user_id'] . "
AND key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'";
$db->sql_query($sql);
}
// Reset the data array
$this->data = array();
$sql = 'SELECT *
FROM ' . USERS_TABLE . '
WHERE user_id = ' . ANONYMOUS;
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
}
$cookie_expire = $this->time_now - 31536000;
$this->set_cookie('u', '', $cookie_expire);
$this->set_cookie('k', '', $cookie_expire);
$this->set_cookie('sid', '', $cookie_expire);
unset($cookie_expire);
$SID = '?sid=';
$this->session_id = $_SID = '';
// To make sure a valid session is created we create one for the anonymous user
if ($new_session)
{
$this->session_create(ANONYMOUS);
}
return true;
}
/**
* Session garbage collection
*
* This looks a lot more complex than it really is. Effectively we are
* deleting any sessions older than an admin definable limit. Due to the
* way in which we maintain session data we have to ensure we update user
* data before those sessions are destroyed. In addition this method
* removes autologin key information that is older than an admin defined
* limit.
*/
function session_gc()
{
global $db, $config, $phpbb_container, $phpbb_dispatcher;
if (!$this->time_now)
{
$this->time_now = time();
}
/**
* Get expired sessions for registered users, only most recent for each user
* Inner SELECT gets most recent expired sessions for unique session_user_id
* Outer SELECT gets data for them
*/
$sql_select = 'SELECT s1.session_page, s1.session_user_id, s1.session_time AS recent_time
FROM ' . SESSIONS_TABLE . ' AS s1
INNER JOIN (
SELECT session_user_id, MAX(session_time) AS recent_time
FROM ' . SESSIONS_TABLE . '
WHERE session_time < ' . ($this->time_now - (int) $config['session_length']) . '
AND session_user_id <> ' . ANONYMOUS . '
GROUP BY session_user_id
) AS s2
ON s1.session_user_id = s2.session_user_id
AND s1.session_time = s2.recent_time';
switch ($db->get_sql_layer())
{