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| author | Marc Alexander <admin@m-a-styles.de> | 2019-12-15 20:26:01 +0100 |
|---|---|---|
| committer | Marc Alexander <admin@m-a-styles.de> | 2019-12-15 20:26:01 +0100 |
| commit | bcc90133a88a4d9536ae715c40f0b5d08dbd659d (patch) | |
| tree | 8ff0e66344fb9e5bb7f6d9d5ccf445874812946c /phpBB | |
| parent | 611b3c4e4641d42ebe5d3225aaa8f7305a3380f9 (diff) | |
| parent | 7ea063100e23234bf0d6a79fd0411e956a1b6668 (diff) | |
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Merge pull request #5728 from rxu/ticket/15294
[ticket/15294] Fix session_gc() selecting expired sessions for unique users
Diffstat (limited to 'phpBB')
| -rw-r--r-- | phpBB/phpbb/session.php | 124 |
1 files changed, 74 insertions, 50 deletions
diff --git a/phpBB/phpbb/session.php b/phpBB/phpbb/session.php index 7c76c08b73..6851bc8188 100644 --- a/phpBB/phpbb/session.php +++ b/phpBB/phpbb/session.php @@ -954,72 +954,96 @@ class session { 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 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()) + { + case 'sqlite3': + if (phpbb_version_compare($db->sql_server_info(true), '3.8.3', '>=')) + { + // For SQLite versions 3.8.3+ which support Common Table Expressions (CTE) + $sql = "WITH s3 (session_page, session_user_id, session_time) AS ($sql_select) + UPDATE " . USERS_TABLE . ' + SET (user_lastpage, user_lastvisit) = (SELECT session_page, session_time FROM s3 WHERE session_user_id = user_id) + WHERE EXISTS (SELECT session_user_id FROM s3 WHERE session_user_id = user_id)'; + $db->sql_query($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); + break; + } - $del_user_id = array(); - $del_sessions = 0; + // No break, for SQLite versions prior to 3.8.3 and Oracle + case 'oracle': + $result = $db->sql_query($sql_select); + 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); + } + $db->sql_freeresult($result); + break; - 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); + case 'mysqli': + $sql = 'UPDATE ' . USERS_TABLE . " u, + ($sql_select) s3 + SET u.user_lastvisit = s3.recent_time, u.user_lastpage = s3.session_page + WHERE u.user_id = s3.session_user_id"; + $db->sql_query($sql); + break; - $del_user_id[] = (int) $row['session_user_id']; - $del_sessions++; + default: + $sql = 'UPDATE ' . USERS_TABLE . " + SET user_lastvisit = s3.recent_time, user_lastpage = s3.session_page + FROM ($sql_select) s3 + WHERE user_id = s3.session_user_id"; + $db->sql_query($sql); + break; } - $db->sql_freeresult($result); - if (count($del_user_id)) + // Delete all expired sessions + $sql = 'DELETE FROM ' . SESSIONS_TABLE . ' + WHERE session_time < ' . ($this->time_now - (int) $config['session_length']); + $db->sql_query($sql); + + // Update gc timer + $config->set('session_last_gc', $this->time_now, false); + + if ($config['max_autologin_time']) { - // 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']); + $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' + WHERE last_login < ' . (time() - (86400 * (int) $config['max_autologin_time'])); $db->sql_query($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); + // only called from CRON; should be a safe workaround until the infrastructure gets going + /* @var \phpbb\captcha\factory $captcha_factory */ + $captcha_factory = $phpbb_container->get('captcha.factory'); + $captcha_factory->garbage_collect($config['captcha_plugin']); - 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 - /* @var $captcha_factory \phpbb\captcha\factory */ - $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); - } + $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 |