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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; | |
| /** | |
| * 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)); | |
| } | |
| 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('\\', '/', $phpbb_filesystem->realpath($root_path))); | |
| $page_dirs = explode('/', str_replace('\\', '/', $phpbb_filesystem->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)), | |
| '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, $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 $ip) | |
| { | |
| // check IPv4 first, the IPv6 is hopefully only going to be used very seldomly | |
| if (!empty($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'] = $request->variable($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 = (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->variable('sid', ''); | |
| $SID = '?sid=' . $this->session_id; | |
| $this->cookie_data = array('u' => 0, 'k' => ''); | |
| } | |
| } | |
| else | |
| { | |
| $this->session_id = $_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. | |
| $ip = htmlspecialchars_decode($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 | |
| { | |
| $config->set('limit_load', '0'); | |
| $config->set('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 | |
| /* @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'] < $this->time_now - ($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) | |
| { | |
| $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), | |
| htmlspecialchars($s_forwarded_for) | |
| )); | |
| } | |
| 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 = $row['user_id']; | |
| } | |
| // If ip is supplied, we will make sure the ip is matching too... | |
| if ($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 | |
| $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((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']) . '\' | |
| 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, $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; | |
| $batch_size = 10; | |
| if (!$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 (count($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 | |
| $config->set('session_last_gc', $this->time_now, false); | |
| if ($config['max_autologin_time']) | |
| { | |
| $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' | |
| WHERE last_login < ' . ( |