// $Id: bootstrap.inc,v 1.145.2.8 2008/01/10 22:14:24 drumm Exp $ /** * @file * Functions that need to be loaded on every Drupal request. */ /** * Indicates that the item should never be removed unless explicitly told to * using cache_clear_all() with a cache ID. */ define('CACHE_PERMANENT', 0); /** * Indicates that the item should be removed at the next general cache wipe. */ define('CACHE_TEMPORARY', -1); /** * Indicates that page caching is disabled. */ define('CACHE_DISABLED', 0); /** * Indicates that page caching is enabled, using "normal" mode. */ define('CACHE_NORMAL', 1); /** * Indicates that page caching is using "aggressive" mode. This bypasses * loading any modules for additional speed, which may break functionality in * modules that expect to be run on each page load. */ define('CACHE_AGGRESSIVE', 2); /** * Indicates a notice-level watchdog event; these are normally notifications * of normal system events that have occurred and can usually be safely ignored. */ define('WATCHDOG_NOTICE', 0); /** * Indicates a warning-level watchdog event; this can be triggered by an error * in a module that does not impact the overall functionality of the site. */ define('WATCHDOG_WARNING', 1); /** * Indicates an error-level watchdog event; could be indicative of an attempt * to compromise the security of the site, or a serious system error. */ define('WATCHDOG_ERROR', 2); /** * First bootstrap phase: initialize configuration. */ define('DRUPAL_BOOTSTRAP_CONFIGURATION', 0); /** * Second bootstrap phase: try to call a non-database cache * fetch routine. */ define('DRUPAL_BOOTSTRAP_EARLY_PAGE_CACHE', 1); /** * Third bootstrap phase: initialize database layer. */ define('DRUPAL_BOOTSTRAP_DATABASE', 2); /** * Fourth bootstrap phase: identify and reject banned hosts. */ define('DRUPAL_BOOTSTRAP_ACCESS', 3); /** * Fifth bootstrap phase: initialize session handling. */ define('DRUPAL_BOOTSTRAP_SESSION', 4); /** * Sixth bootstrap phase: load bootstrap.inc and module.inc, start * the variable system and try to serve a page from the cache. */ define('DRUPAL_BOOTSTRAP_LATE_PAGE_CACHE', 5); /** * Seventh bootstrap phase: set $_GET['q'] to Drupal path of request. */ define('DRUPAL_BOOTSTRAP_PATH', 6); /** * Final bootstrap phase: Drupal is fully loaded; validate and fix * input data. */ define('DRUPAL_BOOTSTRAP_FULL', 7); /** * Role ID for anonymous users; should match what's in the "role" table. */ define('DRUPAL_ANONYMOUS_RID', 1); /** * Role ID for authenticated users; should match what's in the "role" table. */ define('DRUPAL_AUTHENTICATED_RID', 2); /** * Start the timer with the specified name. If you start and stop * the same timer multiple times, the measured intervals will be * accumulated. * * @param name * The name of the timer. */ function timer_start($name) { global $timers; list($usec, $sec) = explode(' ', microtime()); $timers[$name]['start'] = (float)$usec + (float)$sec; $timers[$name]['count'] = isset($timers[$name]['count']) ? ++$timers[$name]['count'] : 1; } /** * Read the current timer value without stopping the timer. * * @param name * The name of the timer. * @return * The current timer value in ms. */ function timer_read($name) { global $timers; if (isset($timers[$name]['start'])) { list($usec, $sec) = explode(' ', microtime()); $stop = (float)$usec + (float)$sec; $diff = round(($stop - $timers[$name]['start']) * 1000, 2); if (isset($timers[$name]['time'])) { $diff += $timers[$name]['time']; } return $diff; } } /** * Stop the timer with the specified name. * * @param name * The name of the timer. * @return * A timer array. The array contains the number of times the * timer has been started and stopped (count) and the accumulated * timer value in ms (time). */ function timer_stop($name) { global $timers; $timers[$name]['time'] = timer_read($name); unset($timers[$name]['start']); return $timers[$name]; } /** * Find the appropriate configuration directory. * * Try finding a matching configuration directory by stripping the website's * hostname from left to right and pathname from right to left. The first * configuration file found will be used; the remaining will ignored. If no * configuration file is found, return a default value '$confdir/default'. * * Example for a fictitious site installed at * http://www.drupal.org:8080/mysite/test/ the 'settings.php' is searched in * the following directories: * * 1. $confdir/8080.www.drupal.org.mysite.test * 2. $confdir/www.drupal.org.mysite.test * 3. $confdir/drupal.org.mysite.test * 4. $confdir/org.mysite.test * * 5. $confdir/8080.www.drupal.org.mysite * 6. $confdir/www.drupal.org.mysite * 7. $confdir/drupal.org.mysite * 8. $confdir/org.mysite * * 9. $confdir/8080.www.drupal.org * 10. $confdir/www.drupal.org * 11. $confdir/drupal.org * 12. $confdir/org * * 13. $confdir/default */ function conf_path() { static $conf = ''; if ($conf) { return $conf; } $confdir = 'sites'; $uri = explode('/', $_SERVER['SCRIPT_NAME'] ? $_SERVER['SCRIPT_NAME'] : $_SERVER['SCRIPT_FILENAME']); $server = explode('.', implode('.', array_reverse(explode(':', rtrim($_SERVER['HTTP_HOST'], '.'))))); for ($i = count($uri) - 1; $i > 0; $i--) { for ($j = count($server); $j > 0; $j--) { $dir = implode('.', array_slice($server, -$j)) . implode('.', array_slice($uri, 0, $i)); if (file_exists("$confdir/$dir/settings.php")) { $conf = "$confdir/$dir"; return $conf; } } } $conf = "$confdir/default"; return $conf; } /** * Unsets all disallowed global variables. See $allowed for what's allowed. */ function drupal_unset_globals() { if (ini_get('register_globals')) { $allowed = array('_ENV' => 1, '_GET' => 1, '_POST' => 1, '_COOKIE' => 1, '_FILES' => 1, '_SERVER' => 1, '_REQUEST' => 1, 'access_check' => 1, 'GLOBALS' => 1); foreach ($GLOBALS as $key => $value) { if (!isset($allowed[$key])) { unset($GLOBALS[$key]); } } } } /** * Loads the configuration and sets the base URL, cookie domain, and * session name correctly. */ function conf_init() { global $base_url, $base_path, $base_root; // Export the following settings.php variables to the global namespace global $db_url, $db_prefix, $cookie_domain, $conf, $installed_profile; $conf = array(); include_once './'. conf_path() .'/settings.php'; if (isset($base_url)) { // Parse fixed base URL from settings.php. $parts = parse_url($base_url); if (!isset($parts['path'])) { $parts['path'] = ''; } $base_path = $parts['path'] . '/'; // Build $base_root (everything until first slash after "scheme://"). $base_root = substr($base_url, 0, strlen($base_url) - strlen($parts['path'])); } else { // Create base URL $base_root = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https' : 'http'; // As $_SERVER['HTTP_HOST'] is user input, ensure it only contains // characters allowed in hostnames. $base_url = $base_root .= '://'. preg_replace('/[^a-z0-9-:._]/i', '', $_SERVER['HTTP_HOST']); // $_SERVER['SCRIPT_NAME'] can, in contrast to $_SERVER['PHP_SELF'], not // be modified by a visitor. if ($dir = trim(dirname($_SERVER['SCRIPT_NAME']), '\,/')) { $base_path = "/$dir"; $base_url .= $base_path; $base_path .= '/'; } else { $base_path = '/'; } } if (!$cookie_domain) { // If the $cookie_domain is empty, try to use the session.cookie_domain. $cookie_domain = ini_get('session.cookie_domain'); } if ($cookie_domain) { // If the user specifies the cookie domain, also use it for session name. $session_name = $cookie_domain; } else { // Otherwise use $base_url as session name, without the protocol // to use the same session identifiers across http and https. list( , $session_name) = explode('://', $base_url, 2); // We try to set the cookie domain to the hostname. // We escape the hostname because it can be modified by a visitor. if (!empty($_SERVER['HTTP_HOST'])) { $cookie_domain = check_plain($_SERVER['HTTP_HOST']); } } // Strip leading periods, www., and port numbers from cookie domain. $cookie_domain = ltrim($cookie_domain, '.'); if (strpos($cookie_domain, 'www.') === 0) { $cookie_domain = substr($cookie_domain, 4); } $cookie_domain = explode(':', $cookie_domain); $cookie_domain = '.'. $cookie_domain[0]; // Per RFC 2109, cookie domains must contain at least one dot other than the // first. For hosts such as 'localhost' or IP Addresses we don't set a cookie domain. if (count(explode('.', $cookie_domain)) > 2 && !is_numeric(str_replace('.', '', $cookie_domain))) { ini_set('session.cookie_domain', $cookie_domain); } session_name('SESS'. md5($session_name)); } /** * Returns and optionally sets the filename for a system item (module, * theme, etc.). The filename, whether provided, cached, or retrieved * from the database, is only returned if the file exists. * * This function plays a key role in allowing Drupal's resources (modules * and themes) to be located in different places depending on a site's * configuration. For example, a module 'foo' may legally be be located * in any of these three places: * * modules/foo/foo.module * sites/all/modules/foo/foo.module * sites/example.com/modules/foo/foo.module * * Calling drupal_get_filename('module', 'foo') will give you one of * the above, depending on where the module is located. * * @param $type * The type of the item (i.e. theme, theme_engine, module). * @param $name * The name of the item for which the filename is requested. * @param $filename * The filename of the item if it is to be set explicitly rather * than by consulting the database. * * @return * The filename of the requested item. */ function drupal_get_filename($type, $name, $filename = NULL) { static $files = array(); global $active_db; if (!isset($files[$type])) { $files[$type] = array(); } if (!empty($filename) && file_exists($filename)) { $files[$type][$name] = $filename; } elseif (isset($files[$type][$name])) { // nothing } // Verify that we have an active database connection, before querying // the database. This is required because this function is called both // before we have a database connection (i.e. during installation) and // when a database connection fails. elseif ($active_db && (($file = db_result(db_query("SELECT filename FROM {system} WHERE name = '%s' AND type = '%s'", $name, $type))) && file_exists($file))) { $files[$type][$name] = $file; } else { // Fallback to searching the filesystem if the database connection is // not established or the requested file is not found. $config = conf_path(); $dir = (($type == 'theme_engine') ? 'themes/engines' : "${type}s"); $file = (($type == 'theme_engine') ? "$name.engine" : "$name.$type"); foreach (array("$config/$dir/$file", "$config/$dir/$name/$file", "$dir/$file", "$dir/$name/$file") as $file) { if (file_exists($file)) { $files[$type][$name] = $file; break; } } } return $files[$type][$name]; } /** * Load the persistent variable table. * * The variable table is composed of values that have been saved in the table * with variable_set() as well as those explicitly specified in the configuration * file. */ function variable_init($conf = array()) { // NOTE: caching the variables improves performance by 20% when serving cached pages. if ($cached = cache_get('variables', 'cache')) { $variables = unserialize($cached->data); } else { $result = db_query('SELECT * FROM {variable}'); while ($variable = db_fetch_object($result)) { $variables[$variable->name] = unserialize($variable->value); } cache_set('variables', 'cache', serialize($variables)); } foreach ($conf as $name => $value) { $variables[$name] = $value; } return $variables; } /** * Return a persistent variable. * * @param $name * The name of the variable to return. * @param $default * The default value to use if this variable has never been set. * @return * The value of the variable. */ function variable_get($name, $default) { global $conf; return isset($conf[$name]) ? $conf[$name] : $default; } /** * Set a persistent variable. * * @param $name * The name of the variable to set. * @param $value * The value to set. This can be any PHP data type; these functions take care * of serialization as necessary. */ function variable_set($name, $value) { global $conf; db_lock_table('variable'); db_query("DELETE FROM {variable} WHERE name = '%s'", $name); db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", $name, serialize($value)); db_unlock_tables(); cache_clear_all('variables', 'cache'); $conf[$name] = $value; } /** * Unset a persistent variable. * * @param $name * The name of the variable to undefine. */ function variable_del($name) { global $conf; db_query("DELETE FROM {variable} WHERE name = '%s'", $name); cache_clear_all('variables', 'cache'); unset($conf[$name]); } /** * Retrieve the current page from the cache. * * Note: we do not serve cached pages when status messages are waiting (from * a redirected form submission which was completed). */ function page_get_cache() { global $user, $base_root; $cache = NULL; if (!$user->uid && $_SERVER['REQUEST_METHOD'] == 'GET' && count(drupal_set_message()) == 0) { $cache = cache_get($base_root . request_uri(), 'cache_page'); if (empty($cache)) { ob_start(); } } return $cache; } /** * Call all init or exit hooks without including all modules. * * @param $hook * The name of the bootstrap hook we wish to invoke. */ function bootstrap_invoke_all($hook) { foreach (module_list(TRUE, TRUE) as $module) { drupal_load('module', $module); module_invoke($module, $hook); } } /** * Includes a file with the provided type and name. This prevents * including a theme, engine, module, etc., more than once. * * @param $type * The type of item to load (i.e. theme, theme_engine, module). * @param $name * The name of the item to load. * * @return * TRUE if the item is loaded or has already been loaded. */ function drupal_load($type, $name) { static $files = array(); if (isset($files[$type][$name])) { return TRUE; } $filename = drupal_get_filename($type, $name); if ($filename) { include_once "./$filename"; $files[$type][$name] = TRUE; return TRUE; } return FALSE; } /** * Set HTTP headers in preparation for a page response. * * Authenticated users are always given a 'no-cache' header, and will * fetch a fresh page on every request. This prevents authenticated * users seeing locally cached pages that show them as logged out. * * @see page_set_cache */ function drupal_page_header() { header("Expires: Sun, 19 Nov 1978 05:00:00 GMT"); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); header("Cache-Control: store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", FALSE); } /** * Set HTTP headers in preparation for a cached page response. * * The general approach here is that anonymous users can keep a local * cache of the page, but must revalidate it on every request. Then, * they are given a '304 Not Modified' response as long as they stay * logged out and the page has not been modified. * */ function drupal_page_cache_header($cache) { // Set default values: $last_modified = gmdate('D, d M Y H:i:s', $cache->created) .' GMT'; $etag = '"'.md5($last_modified).'"'; // See if the client has provided the required HTTP headers: $if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) : FALSE; $if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) : FALSE; if ($if_modified_since && $if_none_match && $if_none_match == $etag // etag must match && $if_modified_since == $last_modified) { // if-modified-since must match header('HTTP/1.1 304 Not Modified'); // All 304 responses must send an etag if the 200 response for the same object contained an etag header("Etag: $etag"); exit(); } // Send appropriate response: header("Last-Modified: $last_modified"); header("ETag: $etag"); // The following headers force validation of cache: header("Expires: Sun, 19 Nov 1978 05:00:00 GMT"); header("Cache-Control: must-revalidate"); // Determine if the browser accepts gzipped data. if (@strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') === FALSE && function_exists('gzencode')) { // Strip the gzip header and run uncompress. $cache->data = gzinflate(substr(substr($cache->data, 10), 0, -8)); } elseif (function_exists('gzencode')) { header('Content-Encoding: gzip'); } // Send the original request's headers. We send them one after // another so PHP's header() function can deal with duplicate // headers. $headers = explode("\n", $cache->headers); foreach ($headers as $header) { header($header); } print $cache->data; } /** * Define the critical hooks that force modules to always be loaded. */ function bootstrap_hooks() { return array('init', 'exit'); } /** * Unserializes and appends elements from a serialized string. * * @param $obj * The object to which the elements are appended. * @param $field * The attribute of $obj whose value should be unserialized. */ function drupal_unpack($obj, $field = 'data') { if ($obj->$field && $data = unserialize($obj->$field)) { foreach ($data as $key => $value) { if (!isset($obj->$key)) { $obj->$key = $value; } } } return $obj; } /** * Return the URI of the referring page. */ function referer_uri() { if (isset($_SERVER['HTTP_REFERER'])) { return $_SERVER['HTTP_REFERER']; } } /** * Encode special characters in a plain-text string for display as HTML. * * Uses drupal_validate_utf8 to prevent cross site scripting attacks on * Internet Explorer 6. */ function check_plain($text) { return drupal_validate_utf8($text) ? htmlspecialchars($text, ENT_QUOTES) : ''; } /** * Checks whether a string is valid UTF-8. * * All functions designed to filter input should use drupal_validate_utf8 * to ensure they operate on valid UTF-8 strings to prevent bypass of the * filter. * * When text containing an invalid UTF-8 lead byte (0xC0 - 0xFF) is presented * as UTF-8 to Internet Explorer 6, the program may misinterpret subsequent * bytes. When these subsequent bytes are HTML control characters such as * quotes or angle brackets, parts of the text that were deemed safe by filters * end up in locations that are potentially unsafe; An onerror attribute that * is outside of a tag, and thus deemed safe by a filter, can be interpreted * by the browser as if it were inside the tag. * * This function exploits preg_match behaviour (since PHP 4.3.5) when used * with the u modifier, as a fast way to find invalid UTF-8. When the matched * string contains an invalid byte sequence, it will fail silently. * * preg_match may not fail on 4 and 5 octet sequences, even though they * are not supported by the specification. * * The specific preg_match behaviour is present since PHP 4.3.5. * * @param $text * The text to check. * @return * TRUE if the text is valid UTF-8, FALSE if not. */ function drupal_validate_utf8($text) { if (strlen($text) == 0) { return TRUE; } return (preg_match('/^./us', $text) == 1); } /** * Since $_SERVER['REQUEST_URI'] is only available on Apache, we * generate an equivalent using other environment variables. */ function request_uri() { if (isset($_SERVER['REQUEST_URI'])) { $uri = $_SERVER['REQUEST_URI']; } else { if (isset($_SERVER['argv'])) { $uri = $_SERVER['SCRIPT_NAME'] .'?'. $_SERVER['argv'][0]; } else { $uri = $_SERVER['SCRIPT_NAME'] .'?'. $_SERVER['QUERY_STRING']; } } return $uri; } /** * Log a system message. * * @param $type * The category to which this message belongs. * @param $message * The message to store in the log. * @param $severity * The severity of the message. One of the following values: * - WATCHDOG_NOTICE * - WATCHDOG_WARNING * - WATCHDOG_ERROR * @param $link * A link to associate with the message. */ function watchdog($type, $message, $severity = WATCHDOG_NOTICE, $link = NULL) { global $user, $base_root; $current_db = db_set_active(); // Note: log the exact, entire absolute URL. $request_uri = $base_root . request_uri(); db_query("INSERT INTO {watchdog} (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (%d, '%s', '%s', %d, '%s', '%s', '%s', '%s', %d)", $user->uid, $type, $message, $severity, $link, $request_uri, referer_uri(), $_SERVER['REMOTE_ADDR'], time()); if ($current_db) { db_set_active($current_db); } } /** * Set a message which reflects the status of the performed operation. * * If the function is called with no arguments, this function returns all set * messages without clearing them. * * @param $message * The message should begin with a capital letter and always ends with a * period '.'. * @param $type * The type of the message. One of the following values are possible: * - 'status' * - 'error' */ function drupal_set_message($message = NULL, $type = 'status') { if ($message) { if (!isset($_SESSION['messages'])) { $_SESSION['messages'] = array(); } if (!isset($_SESSION['messages'][$type])) { $_SESSION['messages'][$type] = array(); } $_SESSION['messages'][$type][] = $message; } // messages not set when DB connection fails return isset($_SESSION['messages']) ? $_SESSION['messages'] : NULL; } /** * Return all messages that have been set. * * @param $type * (optional) Only return messages of this type. * @param $clear_queue * (optional) Set to FALSE if you do not want to clear the messages queue * @return * An associative array, the key is the message type, the value an array * of messages. If the $type parameter is passed, you get only that type, * or an empty array if there are no such messages. If $type is not passed, * all message types are returned, or an empty array if none exist. */ function drupal_get_messages($type = NULL, $clear_queue = TRUE) { if ($messages = drupal_set_message()) { if ($type) { if ($clear_queue) { unset($_SESSION['messages'][$type]); } if (isset($messages[$type])) { return array($type => $messages[$type]); } } else { if ($clear_queue) { unset($_SESSION['messages']); } return $messages; } } return array(); } /** * Perform an access check for a given mask and rule type. Rules are usually * created via admin/user/rules page. * * If any allow rule matches, access is allowed. Otherwise, if any deny rule * matches, access is denied. If no rule matches, access is allowed. * * @param $type string * Type of access to check: Allowed values are: * - 'host': host name or IP address * - 'mail': e-mail address * - 'user': username * @param $mask string * String or mask to test: '_' matches any character, '%' matches any * number of characters. * @return bool * TRUE if access is denied, FALSE if access is allowed. */ function drupal_is_denied($type, $mask) { // Because this function is called for every page request, both cached // and non-cached pages, we tried to optimize it as much as possible. // We deny access if the only matching records in the {access} table have // status 0. If any have status 1, or if there are no matching records, // we allow access. So, select matching records in decreasing order of // 'status', returning NOT(status) for the first. If any have status 1, // they come first, and we return NOT(status) = 0 (allowed). Otherwise, // if we have some with status 0, we return 1 (denied). If no matching // records, we get no return from db_result, so we return (bool)NULL = 0 // (allowed). // The use of ORDER BY / LIMIT is more efficient than "MAX(status) = 0" // in PostgreSQL <= 8.0. return (bool) db_result(db_query_range("SELECT CASE WHEN status=1 THEN 0 ELSE 1 END FROM {access} WHERE type = '%s' AND LOWER('%s') LIKE LOWER(mask) ORDER BY status DESC", $type, $mask, 0, 1)); } /** * Generates a default anonymous $user object. * * @return Object - the user object. */ function drupal_anonymous_user($session = '') { $user = new stdClass(); $user->uid = 0; $user->hostname = $_SERVER['REMOTE_ADDR']; $user->roles = array(); $user->roles[DRUPAL_ANONYMOUS_RID] = 'anonymous user'; $user->session = $session; $user->cache = 0; return $user; } /** * A string describing a phase of Drupal to load. Each phase adds to the * previous one, so invoking a later phase automatically runs the earlier * phases too. The most important usage is that if you want to access the * Drupal database from a script without loading anything else, you can * include bootstrap.inc, and call drupal_bootstrap(DRUPAL_BOOTSTRAP_DATABASE). * * @param $phase * A constant. Allowed values are: * DRUPAL_BOOTSTRAP_CONFIGURATION: initialize configuration. * DRUPAL_BOOTSTRAP_EARLY_PAGE_CACHE: try to call a non-database cache fetch routine. * DRUPAL_BOOTSTRAP_DATABASE: initialize database layer. * DRUPAL_BOOTSTRAP_ACCESS: identify and reject banned hosts. * DRUPAL_BOOTSTRAP_SESSION: initialize session handling. * DRUPAL_BOOTSTRAP_LATE_PAGE_CACHE: load bootstrap.inc and module.inc, start * the variable system and try to serve a page from the cache. * DRUPAL_BOOTSTRAP_PATH: set $_GET['q'] to Drupal path of request. * DRUPAL_BOOTSTRAP_FULL: Drupal is fully loaded, validate and fix input data. */ function drupal_bootstrap($phase) { static $phases = array(DRUPAL_BOOTSTRAP_CONFIGURATION, DRUPAL_BOOTSTRAP_EARLY_PAGE_CACHE, DRUPAL_BOOTSTRAP_DATABASE, DRUPAL_BOOTSTRAP_ACCESS, DRUPAL_BOOTSTRAP_SESSION, DRUPAL_BOOTSTRAP_LATE_PAGE_CACHE, DRUPAL_BOOTSTRAP_PATH, DRUPAL_BOOTSTRAP_FULL); while (!empty($phases) && $phase >= $phases[0]) { $current_phase = array_shift($phases); _drupal_bootstrap($current_phase); } } function _drupal_bootstrap($phase) { global $conf; switch ($phase) { case DRUPAL_BOOTSTRAP_CONFIGURATION: drupal_unset_globals(); // Initialize the configuration conf_init(); break; case DRUPAL_BOOTSTRAP_EARLY_PAGE_CACHE: _drupal_cache_init($phase); break; case DRUPAL_BOOTSTRAP_DATABASE: // Initialize the default database. require_once './includes/database.inc'; db_set_active(); break; case DRUPAL_BOOTSTRAP_ACCESS: // Deny access to hosts which were banned - t() is not yet available. if (drupal_is_denied('host', $_SERVER['REMOTE_ADDR'])) { header('HTTP/1.1 403 Forbidden'); print 'Sorry, '. $_SERVER['REMOTE_ADDR']. ' has been banned.'; exit(); } break; case DRUPAL_BOOTSTRAP_SESSION: require_once variable_get('session_inc', './includes/session.inc'); session_set_save_handler('sess_open', 'sess_close', 'sess_read', 'sess_write', 'sess_destroy_sid', 'sess_gc'); session_start(); break; case DRUPAL_BOOTSTRAP_LATE_PAGE_CACHE: // Initialize configuration variables, using values from settings.php if available. $conf = variable_init(isset($conf) ? $conf : array()); _drupal_cache_init($phase); // Start a page timer: timer_start('page'); drupal_page_header(); break; case DRUPAL_BOOTSTRAP_PATH: require_once './includes/path.inc'; // Initialize $_GET['q'] prior to loading modules and invoking hook_init(). drupal_init_path(); break; case DRUPAL_BOOTSTRAP_FULL: require_once './includes/common.inc'; _drupal_bootstrap_full(); break; } } /** * Initialize the caching strategy, which loads at different stages within * Drupal's bootstrap process. */ function _drupal_cache_init($phase) { require_once variable_get('cache_inc', './includes/cache.inc'); if ($phase == DRUPAL_BOOTSTRAP_EARLY_PAGE_CACHE && variable_get('page_cache_fastpath', 0)) { if (page_cache_fastpath()) { exit(); } } elseif ($phase == DRUPAL_BOOTSTRAP_LATE_PAGE_CACHE) { if ($cache = page_get_cache()) { if (variable_get('cache', CACHE_DISABLED) == CACHE_AGGRESSIVE) { drupal_page_cache_header($cache); exit(); } elseif (variable_get('cache', CACHE_DISABLED) == CACHE_NORMAL) { require_once './includes/module.inc'; bootstrap_invoke_all('init'); drupal_page_cache_header($cache); bootstrap_invoke_all('exit'); exit(); } } require_once './includes/module.inc'; } } /** * Enables use of the theme system without requiring database access. Since * there is not database access no theme will be enabled and the default * themeable functions will be called. Some themeable functions can not be used * without the full Drupal API loaded. For example, theme_page() is * unavailable and theme_maintenance_page() must be used in its place. */ function drupal_maintenance_theme() { global $theme; require_once './includes/path.inc'; require_once './includes/theme.inc'; require_once './includes/common.inc'; require_once './includes/unicode.inc'; require_once './modules/filter/filter.module'; unicode_check(); drupal_add_css(drupal_get_path('module', 'system') .'/defaults.css', 'module'); drupal_add_css(drupal_get_path('module', 'system') .'/system.css', 'module'); $theme = ''; } /** * Return the name of the localisation function. Use in code that needs to * run both during installation and normal operation. */ function get_t() { static $t; if (is_null($t)) { $t = function_exists('install_main') ? 'st' : 't'; } return $t; }
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