diff options
Diffstat (limited to 'phpBB/phpbb/session.php')
| -rw-r--r-- | phpBB/phpbb/session.php | 1617 |
1 files changed, 1617 insertions, 0 deletions
diff --git a/phpBB/phpbb/session.php b/phpBB/phpbb/session.php new file mode 100644 index 0000000000..45e82df591 --- /dev/null +++ b/phpBB/phpbb/session.php @@ -0,0 +1,1617 @@ +<?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; + +/** +* Session class +*/ +class session +{ + var $cookie_data = array(); + var $page = array(); + var $data = array(); + var $browser = ''; + var $forwarded_for = ''; + var $host = ''; + var $session_id = ''; + var $ip = ''; + var $load = 0; + var $time_now = 0; + var $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, $phpbb_filesystem; + + $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) + { + $script_name = htmlspecialchars_decode($request->server('REQUEST_URI')); + $script_name = (($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 = array(); + + // Since some browser do not encode correctly we need to do this with some "special" characters... + // " -> %22, ' => %27, < -> %3C, > -> %3E + $find = array('"', "'", '<', '>', '"', '<', '>'); + $replace = array('%22', '%27', '%3C', '%3E', '%22', '%3C', '%3E'); + + foreach ($args as $key => $argument) + { + if (strpos($argument, 'sid=') === 0) + { + continue; + } + + $use_args[] = str_replace($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)); + + $symfony_request_path = $phpbb_filesystem->clean_path($symfony_request->getPathInfo()); + if ($symfony_request_path !== '/') + { + $page_name .= str_replace('%2F', '/', urlencode($symfony_request_path)); + } + + // current directory within the phpBB root (for example: adm) + $root_dirs = explode('/', str_replace('\\', '/', phpbb_realpath($root_path))); + $page_dirs = explode('/', str_replace('\\', '/', phpbb_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); + + $page_dir = str_repeat('../', sizeof($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, -sizeof($page_dirs)); + $root_script_path = implode('/', $script_dirs) . (sizeof($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)), + 'root_script_path' => str_replace(' ', '%20', htmlspecialchars($root_script_path)), + + '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 + $host = htmlspecialchars_decode($request->header('Host', $request->server('SERVER_NAME'))); + + // 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; + } + + /** + * 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, $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 $ip) + { + // check IPv4 first, the IPv6 is hopefully only going to be used very seldomly + if (!empty($ip) && !preg_match(get_preg_expression('ipv4'), $ip) && !preg_match(get_preg_expression('ipv6'), $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)) + { + $this->cookie_data['u'] = request_var($config['cookie_name'] . '_u', 0, false, true); + $this->cookie_data['k'] = request_var($config['cookie_name'] . '_k', '', false, true); + $this->session_id = request_var($config['cookie_name'] . '_sid', '', false, true); + + $SID = (defined('NEED_SID')) ? '?sid=' . $this->session_id : '?sid='; + $_SID = (defined('NEED_SID')) ? $this->session_id : ''; + + if (empty($this->session_id)) + { + $this->session_id = $_SID = request_var('sid', ''); + $SID = '?sid=' . $this->session_id; + $this->cookie_data = array('u' => 0, 'k' => ''); + } + } + else + { + $this->session_id = $_SID = request_var('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. + $ip = htmlspecialchars_decode($request->server('REMOTE_ADDR')); + $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) + { + if (function_exists('phpbb_ip_normalise')) + { + // Normalise IP address + $ip = phpbb_ip_normalise($ip); + + if (empty($ip)) + { + // IP address is invalid. + break; + } + + // IP address is valid. + $this->ip = $ip; + + // Skip legacy code. + continue; + } + + if (preg_match(get_preg_expression('ipv4'), $ip)) + { + $this->ip = $ip; + } + else if (preg_match(get_preg_expression('ipv6'), $ip)) + { + // Quick check for IPv4-mapped address in IPv6 + if (stripos($ip, '::ffff:') === 0) + { + $ipv4 = substr($ip, 7); + + if (preg_match(get_preg_expression('ipv4'), $ipv4)) + { + $ip = $ipv4; + } + } + + $this->ip = $ip; + } + else + { + // We want to use the last valid address in the chain + // Leave foreach loop when address is invalid + break; + } + } + + $this->load = false; + + // Load limit check (if applicable) + if ($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 + { + set_config('limit_load', '0'); + set_config('limit_search_load', '0'); + } + } + + // if no session id is set, redirect to index.php + $session_id = $request->variable('sid', ''); + if (defined('NEED_SID') && (empty($session_id) || $this->session_id !== $session_id)) + { + send_status_line(401, 'Unauthorized'); + redirect(append_sid("{$phpbb_root_path}index.$phpEx")); + } + + // if session id is set + if (!empty($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 + $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'] < $this->time_now - ($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); + + return true; + } + } + else + { + // Added logging temporarly to help debug bugs... + if (defined('DEBUG') && $this->data['user_id'] != ANONYMOUS) + { + if ($referer_valid) + { + add_log('critical', 'LOG_IP_BROWSER_FORWARDED_CHECK', $u_ip, $s_ip, $u_browser, $s_browser, htmlspecialchars($u_forwarded_for), htmlspecialchars($s_forwarded_for)); + } + else + { + add_log('critical', 'LOG_REFERER_INVALID', $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_root_path, $phpEx, $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 = $row['user_id']; + } + + // If ip is supplied, we will make sure the ip is matching too... + if ($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; + } + } + + $provider_collection = $phpbb_container->get('auth.provider_collection'); + $provider = $provider_collection->get_provider(); + $this->data = $provider->autologin(); + + if ($user_id !== false && sizeof($this->data) && $this->data['user_id'] != $user_id) + { + $this->data = array(); + } + + if (sizeof($this->data)) + { + $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'] && $this->cookie_data['u'] && !sizeof($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 ($user_id !== false && !sizeof($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($_GET['sid'])) + { + send_status_line(301, 'Moved Permanently'); + redirect(build_url(array('sid'))); + } + + // If no data was returned one or more of the following occurred: + // Key didn't match one in the DB + // User does not exist + // User is inactive + // User is bot + if (!sizeof($this->data) || !is_array($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 + $sql = 'UPDATE ' . USERS_TABLE . ' + SET user_lastvisit = ' . (int) $this->data['session_time'] . ' + WHERE user_id = ' . (int) $this->data['user_id']; + $db->sql_query($sql); + } + + $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 + $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($config['session_length'], $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']) . '\' + WHERE user_id = ' . (int) $this->data['user_id']; + $db->sql_query($sql); + } + } + else + { + $this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now; + + // Update the last visit 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); + + $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, $config, $phpbb_root_path, $phpEx, $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 + $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_root_path, $phpEx, $phpbb_container, $phpbb_dispatcher; + + $batch_size = 10; + + if (!$this->time_now) + { + $this->time_now = time(); + } + + // Firstly, delete guest sessions + $sql = 'DELETE FROM ' . SESSIONS_TABLE . ' + WHERE session_user_id = ' . ANONYMOUS . ' + AND session_time < ' . (int) ($this->time_now - $config['session_length']); + $db->sql_query($sql); + + // Get expired sessions, only most recent for each user + $sql = 'SELECT session_user_id, session_page, MAX(session_time) AS recent_time + FROM ' . SESSIONS_TABLE . ' + WHERE session_time < ' . ($this->time_now - $config['session_length']) . ' + GROUP BY session_user_id, session_page'; + $result = $db->sql_query_limit($sql, $batch_size); + + $del_user_id = array(); + $del_sessions = 0; + + while ($row = $db->sql_fetchrow($result)) + { + $sql = 'UPDATE ' . USERS_TABLE . ' + SET user_lastvisit = ' . (int) $row['recent_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "' + WHERE user_id = " . (int) $row['session_user_id']; + $db->sql_query($sql); + + $del_user_id[] = (int) $row['session_user_id']; + $del_sessions++; + } + $db->sql_freeresult($result); + + if (sizeof($del_user_id)) + { + // Delete expired sessions + $sql = 'DELETE FROM ' . SESSIONS_TABLE . ' + WHERE ' . $db->sql_in_set('session_user_id', $del_user_id) . ' + AND session_time < ' . ($this->time_now - $config['session_length']); + $db->sql_query($sql); + } + + if ($del_sessions < $batch_size) + { + // Less than 10 users, update gc timer ... else we want gc + // called again to delete other sessions + set_config('session_last_gc', $this->time_now, true); + + if ($config['max_autologin_time']) + { + $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' + WHERE last_login < ' . (time() - (86400 * (int) $config['max_autologin_time'])); + $db->sql_query($sql); + } + + // only called from CRON; should be a safe workaround until the infrastructure gets going + $captcha_factory = $phpbb_container->get('captcha.factory'); + $captcha_factory->garbage_collect($config['captcha_plugin']); + + $sql = 'DELETE FROM ' . LOGIN_ATTEMPT_TABLE . ' + WHERE attempt_time < ' . (time() - (int) $config['ip_login_limit_time']); + $db->sql_query($sql); + } + + /** + * Event to trigger extension on session_gc + * + * @event core.session_gc_after + * @since 3.1.6-RC1 + */ + $phpbb_dispatcher->dispatch('core.session_gc_after'); + + return; + } + + /** + * Sets a cookie + * + * Sets a cookie of the given name with the specified data for the given length of time. If no time is specified, a session cookie will be set. + * + * @param string $name Name of the cookie, will be automatically prefixed with the phpBB cookie name. track becomes [cookie_name]_track then. + * @param string $cookiedata The data to hold within the cookie + * @param int $cookietime The expiration time as UNIX timestamp. If 0 is provided, a session cookie is set. + * @param bool $httponly Use HttpOnly. Defaults to true. Use false to make cookie accessible by client-side scripts. + */ + function set_cookie($name, $cookiedata, $cookietime, $httponly = true) + { + global $config; + + $name_data = rawurlencode($config['cookie_name'] . '_' . $name) . '=' . rawurlencode($cookiedata); + $expire = gmdate('D, d-M-Y H:i:s \\G\\M\\T', $cookietime); + $domain = (!$config['cookie_domain'] || $config['cookie_domain'] == '127.0.0.1' || strpos($config['cookie_domain'], '.') === false) ? '' : '; domain=' . $config['cookie_domain']; + + header('Set-Cookie: ' . $name_data . (($cookietime) ? '; expires=' . $expire : '') . '; path=' . $config['cookie_path'] . $domain . ((!$config['cookie_secure']) ? '' : '; secure') . ';' . (($httponly) ? ' HttpOnly' : ''), false); + } + + /** + * Check for banned user + * + * Checks whether the supplied user is banned by id, ip or email. If no parameters + * are passed to the method pre-existing session data is used. + * + * @param int|false $user_id The user id + * @param mixed $user_ips Can contain a string with one IP or an array of multiple IPs + * @param string|false $user_email The user email + * @param bool $return If $return is false this routine does not return on finding a banned user, + * it outputs a relevant message and stops execution. + */ + function check_ban($user_id = false, $user_ips = false, $user_email = false, $return = false) + { + global $config, $db, $phpbb_dispatcher; + + if (defined('IN_CHECK_BAN') || defined('SKIP_CHECK_BAN')) + { + return; + } + + $banned = false; + $cache_ttl = 3600; + $where_sql = array(); + + $sql = 'SELECT ban_ip, ban_userid, ban_email, ban_exclude, ban_give_reason, ban_end + FROM ' . BANLIST_TABLE . ' + WHERE '; + + // Determine which entries to check, only return those + if ($user_email === false) + { + $where_sql[] = "ban_email = ''"; + } + + if ($user_ips === false) + { + $where_sql[] = "(ban_ip = '' OR ban_exclude = 1)"; + } + + if ($user_id === false) + { + $where_sql[] = '(ban_userid = 0 OR ban_exclude = 1)'; + } + else + { + $cache_ttl = ($user_id == ANONYMOUS) ? 3600 : 0; + $_sql = '(ban_userid = ' . $user_id; + + if ($user_email !== false) + { + $_sql .= " OR ban_email <> ''"; + } + + if ($user_ips !== false) + { + $_sql .= " OR ban_ip <> ''"; + } + + $_sql .= ')'; + + $where_sql[] = $_sql; + } + + $sql .= (sizeof($where_sql)) ? implode(' AND ', $where_sql) : ''; + $result = $db->sql_query($sql, $cache_ttl); + + $ban_triggered_by = 'user'; + while ($row = $db->sql_fetchrow($result)) + { + if ($row['ban_end'] && $row['ban_end'] < time()) + { + continue; + } + + $ip_banned = false; + if (!empty($row['ban_ip'])) + { + if (!is_array($user_ips)) + { + $ip_banned = preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ips); + } + else + { + foreach ($user_ips as $user_ip) + { + if (preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ip)) + { + $ip_banned = true; + break; + } + } + } + } + + if ((!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id) || + $ip_banned || + (!empty($row['ban_email']) && preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_email'], '#')) . '$#i', $user_email))) + { + if (!empty($row['ban_exclude'])) + { + $banned = false; + break; + } + else + { + $banned = true; + $ban_row = $row; + + if (!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id) + { + $ban_triggered_by = 'user'; + } + else if ($ip_banned) + { + $ban_triggered_by = 'ip'; + } + else + { + $ban_triggered_by = 'email'; + } + + // Don't break. Check if there is an exclude rule for this user + } + } + } + $db->sql_freeresult($result); + + /** + * Event to set custom ban type + * + * @event core.session_set_custom_ban + * @var bool return If $return is false this routine does not return on finding a banned user, it outputs a relevant message and stops execution + * @var bool banned Check if user already banned + * @var array|false ban_row Ban data + * @var string ban_triggered_by Method that caused ban, can be your custom method + * @since 3.1.3-RC1 + */ + $ban_row = isset($ban_row) ? $ban_row : false; + $vars = array('return', 'banned', 'ban_row', 'ban_triggered_by'); + extract($phpbb_dispatcher->trigger_event('core.session_set_custom_ban', compact($vars))); + + if ($banned && !$return) + { + global $template, $phpbb_root_path, $phpEx; + + // If the session is empty we need to create a valid one... + if (empty($this->session_id)) + { + // This seems to be no longer needed? - #14971 +// $this->session_create(ANONYMOUS); + } + + // Initiate environment ... since it won't be set at this stage + $this->setup(); + + // Logout the user, banned users are unable to use the normal 'logout' link + if ($this->data['user_id'] != ANONYMOUS) + { + $this->session_kill(); + } + + // We show a login box here to allow founders accessing the board if banned by IP + if (defined('IN_LOGIN') && $this->data['user_id'] == ANONYMOUS) + { + $this->setup('ucp'); + $this->data['is_registered'] = $this->data['is_bot'] = false; + + // Set as a precaution to allow login_box() handling this case correctly as well as this function not being executed again. + define('IN_CHECK_BAN', 1); + + login_box("index.$phpEx"); + + // The false here is needed, else the user is able to circumvent the ban. + $this->session_kill(false); + } + + // Ok, we catch the case of an empty session id for the anonymous user... + // This can happen if the user is logging in, banned by username and the login_box() being called "again". + if (empty($this->session_id) && defined('IN_CHECK_BAN')) + { + $this->session_create(ANONYMOUS); + } + + // Determine which message to output + $till_date = ($ban_row['ban_end']) ? $this->format_date($ban_row['ban_end']) : ''; + $message = ($ban_row['ban_end']) ? 'BOARD_BAN_TIME' : 'BOARD_BAN_PERM'; + + $contact_link = phpbb_get_board_contact_link($config, $phpbb_root_path, $phpEx); + $message = sprintf($this->lang[$message], $till_date, '<a href="' . $contact_link . '">', '</a>'); + $message .= ($ban_row['ban_give_reason']) ? '<br /><br />' . sprintf($this->lang['BOARD_BAN_REASON'], $ban_row['ban_give_reason']) : ''; + $message .= '<br /><br /><em>' . $this->lang['BAN_TRIGGERED_BY_' . strtoupper($ban_triggered_by)] . '</em>'; + + // A very special case... we are within the cron script which is not supposed to print out the ban message... show blank page + if (defined('IN_CRON')) + { + garbage_collection(); + exit_handler(); + exit; + } + + // To circumvent session_begin returning a valid value and the check_ban() not called on second page view, we kill the session again + $this->session_kill(false); + + trigger_error($message); + } + + return ($banned && $ban_row['ban_give_reason']) ? $ban_row['ban_give_reason'] : $banned; + } + + /** + * Check the current session for bans + * + * @return true if session user is banned. + */ + protected function check_ban_for_current_session($config) + { + if (!defined('SKIP_CHECK_BAN') && $this->data['user_type'] != USER_FOUNDER) + { + if (!$config['forwarded_for_check']) + { + $this->check_ban($this->data['user_id'], $this->ip); + } + else + { + $ips = explode(' ', $this->forwarded_for); + $ips[] = $this->ip; + $this->check_ban($this->data['user_id'], $ips); + } + } + } + + /** + * Check if ip is blacklisted + * This should be called only where absolutely necessary + * + * Only IPv4 (rbldns does not support AAAA records/IPv6 lookups) + * + * @author satmd (from the php manual) + * @param string $mode register/post - spamcop for example is ommitted for posting + * @param string|false $ip the IPv4 address to check + * + * @return false if ip is not blacklisted, else an array([checked server], [lookup]) + */ + function check_dnsbl($mode, $ip = false) + { + if ($ip === false) + { + $ip = $this->ip; + } + + // Neither Spamhaus nor Spamcop supports IPv6 addresses. + if (strpos($ip, ':') !== false) + { + return false; + } + + $dnsbl_check = array( + 'sbl.spamhaus.org' => 'http://www.spamhaus.org/query/bl?ip=', + ); + + if ($mode == 'register') + { + $dnsbl_check['bl.spamcop.net'] = 'http://spamcop.net/bl.shtml?'; + } + + if ($ip) + { + $quads = explode('.', $ip); + $reverse_ip = $quads[3] . '.' . $quads[2] . '.' . $quads[1] . '.' . $quads[0]; + + // Need to be listed on all servers... + $listed = true; + $info = array(); + + foreach ($dnsbl_check as $dnsbl => $lookup) + { + if (phpbb_checkdnsrr($reverse_ip . '.' . $dnsbl . '.', 'A') === true) + { + $info = array($dnsbl, $lookup . $ip); + } + else + { + $listed = false; + } + } + + if ($listed) + { + return $info; + } + } + + return false; + } + + /** + * Check if URI is blacklisted + * This should be called only where absolutly necessary, for example on the submitted website field + * This function is not in use at the moment and is only included for testing purposes, it may not work at all! + * This means it is untested at the moment and therefore commented out + * + * @param string $uri URI to check + * @return true if uri is on blacklist, else false. Only blacklist is checked (~zero FP), no grey lists + function check_uribl($uri) + { + // Normally parse_url() is not intended to parse uris + // We need to get the top-level domain name anyway... change. + $uri = parse_url($uri); + + if ($uri === false || empty($uri['host'])) + { + return false; + } + + $uri = trim($uri['host']); + + if ($uri) + { + // One problem here... the return parameter for the "windows" method is different from what + // we expect... this may render this check useless... + if (phpbb_checkdnsrr($uri . '.multi.uribl.com.', 'A') === true) + { + return true; + } + } + + return false; + } + */ + + /** + * Set/Update a persistent login key + * + * This method creates or updates a persistent session key. When a user makes + * use of persistent (formerly auto-) logins a key is generated and stored in the + * DB. When they revisit with the same key it's automatically updated in both the + * DB and cookie. Multiple keys may exist for each user representing different + * browsers or locations. As with _any_ non-secure-socket no passphrase login this + * remains vulnerable to exploit. + */ + function set_login_key($user_id = false, $key = false, $user_ip = false) + { + global $config, $db; + + $user_id = ($user_id === false) ? $this->data['user_id'] : $user_id; + $user_ip = ($user_ip === false) ? $this->ip : $user_ip; + $key = ($key === false) ? (($this->cookie_data['k']) ? $this->cookie_data['k'] : false) : $key; + + $key_id = unique_id(hexdec(substr($this->session_id, 0, 8))); + + $sql_ary = array( + 'key_id' => (string) md5($key_id), + 'last_ip' => (string) $this->ip, + 'last_login' => (int) time() + ); + + if (!$key) + { + $sql_ary += array( + 'user_id' => (int) $user_id + ); + } + + if ($key) + { + $sql = 'UPDATE ' . SESSIONS_KEYS_TABLE . ' + SET ' . $db->sql_build_array('UPDATE', $sql_ary) . ' + WHERE user_id = ' . (int) $user_id . " + AND key_id = '" . $db->sql_escape(md5($key)) . "'"; + } + else + { + $sql = 'INSERT INTO ' . SESSIONS_KEYS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary); + } + $db->sql_query($sql); + + $this->cookie_data['k'] = $key_id; + + return false; + } + + /** + * Reset all login keys for the specified user + * + * This method removes all current login keys for a specified (or the current) + * user. It will be called on password change to render old keys unusable + */ + function reset_login_keys($user_id = false) + { + global $config, $db; + + $user_id = ($user_id === false) ? (int) $this->data['user_id'] : (int) $user_id; + + $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' + WHERE user_id = ' . (int) $user_id; + $db->sql_query($sql); + + // If the user is logged in, update last visit info first before deleting sessions + $sql = 'SELECT session_time, session_page + FROM ' . SESSIONS_TABLE . ' + WHERE session_user_id = ' . (int) $user_id . ' + ORDER BY session_time DESC'; + $result = $db->sql_query_limit($sql, 1); + $row = $db->sql_fetchrow($result); + $db->sql_freeresult($result); + + if ($row) + { + $sql = 'UPDATE ' . USERS_TABLE . ' + SET user_lastvisit = ' . (int) $row['session_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "' + WHERE user_id = " . (int) $user_id; + $db->sql_query($sql); + } + + // Let's also clear any current sessions for the specified user_id + // If it's the current user then we'll leave this session intact + $sql_where = 'session_user_id = ' . (int) $user_id; + $sql_where .= ($user_id === (int) $this->data['user_id']) ? " AND session_id <> '" . $db->sql_escape($this->session_id) . "'" : ''; + + $sql = 'DELETE FROM ' . SESSIONS_TABLE . " + WHERE $sql_where"; + $db->sql_query($sql); + + // We're changing the password of the current user and they have a key + // Lets regenerate it to be safe + if ($user_id === (int) $this->data['user_id'] && $this->cookie_data['k']) + { + $this->set_login_key($user_id); + } + } + + + /** + * Check if the request originated from the same page. + * @param bool $check_script_path If true, the path will be checked as well + */ + function validate_referer($check_script_path = false) + { + global $config, $request; + + // no referer - nothing to validate, user's fault for turning it off (we only check on POST; so meta can't be the reason) + if (empty($this->referer) || empty($this->host)) + { + return true; + } + + $host = htmlspecialchars($this->host); + $ref = substr($this->referer, strpos($this->referer, '://') + 3); + + if (!(stripos($ref, $host) === 0) && (!$config['force_server_vars'] || !(stripos($ref, $config['server_name']) === 0))) + { + return false; + } + else if ($check_script_path && rtrim($this->page['root_script_path'], '/') !== '') + { + $ref = substr($ref, strlen($host)); + $server_port = $request->server('SERVER_PORT', 0); + + if ($server_port !== 80 && $server_port !== 443 && stripos($ref, ":$server_port") === 0) + { + $ref = substr($ref, strlen(":$server_port")); + } + + if (!(stripos(rtrim($ref, '/'), rtrim($this->page['root_script_path'], '/')) === 0)) + { + return false; + } + } + + return true; + } + + + function unset_admin() + { + global $db; + $sql = 'UPDATE ' . SESSIONS_TABLE . ' + SET session_admin = 0 + WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\''; + $db->sql_query($sql); + } + + /** + * Update the session data + * + * @param array $session_data associative array of session keys to be updated + * @param string $session_id optional session_id, defaults to current user's session_id + */ + public function update_session($session_data, $session_id = null) + { + global $db, $phpbb_dispatcher; + + $session_id = ($session_id) ? $session_id : $this->session_id; + + $sql = 'UPDATE ' . SESSIONS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $session_data) . " + WHERE session_id = '" . $db->sql_escape($session_id) . "'"; + $db->sql_query($sql); + + /** + * Event to send update session information to extension + * Read-only event + * + * @event core.update_session_after + * @var array session_data Associative array of session keys to be updated + * @var string session_id current user's session_id + * @since 3.1.6-RC1 + */ + $vars = array('session_data', 'session_id'); + extract($phpbb_dispatcher->trigger_event('core.update_session_after', compact($vars))); + } + + public function update_session_infos() + { + global $config, $db, $request; + + // No need to update if it's a new session. Informations are already inserted by session_create() + if (isset($this->data['session_created']) && $this->data['session_created']) + { + return; + } + + // Only update session DB a minute or so after last update or if page changes + if ($this->time_now - ((isset($this->data['session_time'])) ? $this->data['session_time'] : 0) > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page'])) + { + $sql_ary = array('session_time' => $this->time_now); + + // Do not update the session page for ajax requests, so the view online still works as intended + if ($this->update_session_page && !$request->is_ajax()) + { + $sql_ary['session_page'] = substr($this->page['page'], 0, 199); + $sql_ary['session_forum_id'] = $this->page['forum']; + } + + $db->sql_return_on_error(true); + + $this->update_session($sql_ary); + + $db->sql_return_on_error(false); + + $this->data = array_merge($this->data, $sql_ary); + + if ($this->data['user_id'] != ANONYMOUS && isset($config['new_member_post_limit']) && $this->data['user_new'] && $config['new_member_post_limit'] <= $this->data['user_posts']) + { + $this->leave_newly_registered(); + } + } + } +} |