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Code Editor : update.inc
<?php /** * @file * Drupal database update API. * * This file contains functions to perform database updates for a Drupal * installation. It is included and used extensively by update.php. */ /** * Minimum schema version of Drupal 6 required for upgrade to Drupal 7. * * Upgrades from Drupal 6 to Drupal 7 require that Drupal 6 be running * the most recent version, or the upgrade could fail. We can't easily * check the Drupal 6 version once the update process has begun, so instead * we check the schema version of system.module in the system table. */ define('REQUIRED_D6_SCHEMA_VERSION', '6055'); /** * Disable any items in the {system} table that are not core compatible. */ function update_fix_compatibility() { $incompatible = array(); $result = db_query("SELECT name, type, status FROM {system} WHERE status = 1 AND type IN ('module','theme')"); foreach ($result as $row) { if (update_check_incompatibility($row->name, $row->type)) { $incompatible[] = $row->name; } } if (!empty($incompatible)) { db_update('system') ->fields(array('status' => 0)) ->condition('name', $incompatible, 'IN') ->execute(); } } /** * Tests the compatibility of a module or theme. */ function update_check_incompatibility($name, $type = 'module') { static $themes, $modules; // Store values of expensive functions for future use. if (empty($themes) || empty($modules)) { // We need to do a full rebuild here to make sure the database reflects any // code changes that were made in the filesystem before the update script // was initiated. $themes = system_rebuild_theme_data(); $modules = system_rebuild_module_data(); } if ($type == 'module' && isset($modules[$name])) { $file = $modules[$name]; } elseif ($type == 'theme' && isset($themes[$name])) { $file = $themes[$name]; } if (!isset($file) || !isset($file->info['core']) || $file->info['core'] != DRUPAL_CORE_COMPATIBILITY || version_compare(phpversion(), $file->info['php']) < 0) { return TRUE; } return FALSE; } /** * Performs extra steps required to bootstrap when using a Drupal 6 database. * * Users who still have a Drupal 6 database (and are in the process of * updating to Drupal 7) need extra help before a full bootstrap can be * achieved. This function does the necessary preliminary work that allows * the bootstrap to be successful. * * No access check has been performed when this function is called, so no * irreversible changes to the database are made here. */ function update_prepare_d7_bootstrap() { // Allow the bootstrap to proceed even if a Drupal 6 settings.php file is // still being used. include_once DRUPAL_ROOT . '/includes/install.inc'; drupal_bootstrap(DRUPAL_BOOTSTRAP_CONFIGURATION); global $databases, $db_url, $db_prefix, $update_rewrite_settings; if (empty($databases) && !empty($db_url)) { $databases = update_parse_db_url($db_url, $db_prefix); // Record the fact that the settings.php file will need to be rewritten. $update_rewrite_settings = TRUE; $settings_file = conf_path() . '/settings.php'; $writable = drupal_verify_install_file($settings_file, FILE_EXIST|FILE_READABLE|FILE_WRITABLE); $requirements = array( 'settings file' => array( 'title' => 'Settings file', 'value' => $writable ? 'The settings file is writable.' : 'The settings file is not writable.', 'severity' => $writable ? REQUIREMENT_OK : REQUIREMENT_ERROR, 'description' => $writable ? '' : 'Drupal requires write permissions to <em>' . $settings_file . '</em> during the update process. If you are unsure how to grant file permissions, consult the <a href="http://drupal.org/server-permissions">online handbook</a>.', ), ); update_extra_requirements($requirements); } // The new {blocked_ips} table is used in Drupal 7 to store a list of // banned IP addresses. If this table doesn't exist then we are still // running on a Drupal 6 database, so we suppress the unavoidable errors // that occur by creating a static list. $GLOBALS['conf']['blocked_ips'] = array(); // Check that PDO is available and that the correct PDO database driver is // loaded. Bootstrapping to DRUPAL_BOOTSTRAP_DATABASE will result in a fatal // error otherwise. $message = ''; $pdo_link = 'http://drupal.org/requirements/pdo'; // Check that PDO is loaded. if (!extension_loaded('pdo')) { $message = '<h2>PDO is required!</h2><p>Drupal 7 requires PHP ' . DRUPAL_MINIMUM_PHP . ' or higher with the PHP Data Objects (PDO) extension enabled.</p>'; } // The PDO::ATTR_DEFAULT_FETCH_MODE constant is not available in the PECL // version of PDO. elseif (!defined('PDO::ATTR_DEFAULT_FETCH_MODE')) { $message = '<h2>The wrong version of PDO is installed!</h2><p>Drupal 7 requires the PHP Data Objects (PDO) extension from PHP core to be enabled. This system has the older PECL version installed.'; $pdo_link = 'http://drupal.org/requirements/pdo#pecl'; } // Check that the correct driver is loaded for the database being updated. // If we have no driver information (for example, if someone tried to create // the Drupal 7 $databases array themselves but did not do it correctly), // this message will be confusing, so do not perform the check; instead, just // let the database connection fail in the code that follows. elseif (isset($databases['default']['default']['driver']) && !in_array($databases['default']['default']['driver'], PDO::getAvailableDrivers())) { $message = '<h2>A PDO database driver is required!</h2><p>You need to enable the PDO_' . strtoupper($databases['default']['default']['driver']) . ' database driver for PHP ' . DRUPAL_MINIMUM_PHP . ' or higher so that Drupal 7 can access the database.</p>'; } if ($message) { print $message . '<p>See the <a href="' . $pdo_link . '">system requirements page</a> for more information.</p>'; exit(); } // Allow the database system to work even if the registry has not been // created yet. drupal_bootstrap(DRUPAL_BOOTSTRAP_DATABASE); // If the site has not updated to Drupal 7 yet, check to make sure that it is // running an up-to-date version of Drupal 6 before proceeding. Note this has // to happen AFTER the database bootstraps because of // drupal_get_installed_schema_version(). $system_schema = drupal_get_installed_schema_version('system'); if ($system_schema < 7000) { $has_required_schema = $system_schema >= REQUIRED_D6_SCHEMA_VERSION; $requirements = array( 'drupal 6 version' => array( 'title' => 'Drupal 6 version', 'value' => $has_required_schema ? 'You are running a current version of Drupal 6.' : 'You are not running a current version of Drupal 6', 'severity' => $has_required_schema ? REQUIREMENT_OK : REQUIREMENT_ERROR, 'description' => $has_required_schema ? '' : 'Please update your Drupal 6 installation to the most recent version before attempting to upgrade to Drupal 7', ), ); // Make sure that the database environment is properly set up. try { db_run_tasks(db_driver()); } catch (DatabaseTaskException $e) { $requirements['database tasks'] = array( 'title' => 'Database environment', 'value' => 'There is a problem with your database environment', 'severity' => REQUIREMENT_ERROR, 'description' => $e->getMessage(), ); } update_extra_requirements($requirements); // Allow a D6 session to work, since the upgrade has not been performed yet. $d6_session_name = update_get_d6_session_name(); if (!empty($_COOKIE[$d6_session_name])) { // Set the current sid to the one found in the D6 cookie. $sid = $_COOKIE[$d6_session_name]; $_COOKIE[session_name()] = $sid; session_id($sid); } // Upgrading from D6 to D7.{0,1,2,3,4,8,...} is different than upgrading // from D6 to D7.{5,6,7} which should be considered broken. To be able to // properly handle this difference in node_update_7012 we need to keep track // of whether a D6 > D7 upgrade or a D7 > D7 update is running. // Since variable_set() is not available here, the D6 status is being saved // in a local variable to be able to store it later. $update_d6 = TRUE; } // Create the registry tables. if (!db_table_exists('registry')) { $schema['registry'] = array( 'fields' => array( 'name' => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''), 'type' => array('type' => 'varchar', 'length' => 9, 'not null' => TRUE, 'default' => ''), 'filename' => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''), 'module' => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''), 'weight' => array('type' => 'int', 'not null' => TRUE, 'default' => 0), ), 'primary key' => array('name', 'type'), 'indexes' => array( 'hook' => array('type', 'weight', 'module'), ), ); db_create_table('registry', $schema['registry']); } if (!db_table_exists('registry_file')) { $schema['registry_file'] = array( 'fields' => array( 'filename' => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE), 'hash' => array('type' => 'varchar', 'length' => 64, 'not null' => TRUE), ), 'primary key' => array('filename'), ); db_create_table('registry_file', $schema['registry_file']); } // Older versions of Drupal 6 do not include the semaphore table, which is // required to bootstrap, so we add it now so that we can bootstrap and // provide a reasonable error message. if (!db_table_exists('semaphore')) { $semaphore = array( 'description' => 'Table for holding semaphores, locks, flags, etc. that cannot be stored as Drupal variables since they must not be cached.', 'fields' => array( 'name' => array( 'description' => 'Primary Key: Unique name.', 'type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '' ), 'value' => array( 'description' => 'A value for the semaphore.', 'type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '' ), 'expire' => array( 'description' => 'A Unix timestamp with microseconds indicating when the semaphore should expire.', 'type' => 'float', 'size' => 'big', 'not null' => TRUE ), ), 'indexes' => array( 'value' => array('value'), 'expire' => array('expire'), ), 'primary key' => array('name'), ); db_create_table('semaphore', $semaphore); } // The new cache_bootstrap bin is required to bootstrap to // DRUPAL_BOOTSTRAP_SESSION, so create it here rather than in // update_fix_d7_requirements(). if (!db_table_exists('cache_bootstrap')) { $cache_bootstrap = array( 'description' => 'Cache table for data required to bootstrap Drupal, may be routed to a shared memory cache.', 'fields' => array( 'cid' => array( 'description' => 'Primary Key: Unique cache ID.', 'type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '', ), 'data' => array( 'description' => 'A collection of data to cache.', 'type' => 'blob', 'not null' => FALSE, 'size' => 'big', ), 'expire' => array( 'description' => 'A Unix timestamp indicating when the cache entry should expire, or 0 for never.', 'type' => 'int', 'not null' => TRUE, 'default' => 0, ), 'created' => array( 'description' => 'A Unix timestamp indicating when the cache entry was created.', 'type' => 'int', 'not null' => TRUE, 'default' => 0, ), 'serialized' => array( 'description' => 'A flag to indicate whether content is serialized (1) or not (0).', 'type' => 'int', 'size' => 'small', 'not null' => TRUE, 'default' => 0, ), ), 'indexes' => array( 'expire' => array('expire'), ), 'primary key' => array('cid'), ); db_create_table('cache_bootstrap', $cache_bootstrap); } // Set a valid timezone for 6 -> 7 upgrade process. drupal_bootstrap(DRUPAL_BOOTSTRAP_VARIABLES); $timezone_offset = variable_get('date_default_timezone', 0); if (is_numeric($timezone_offset)) { // Save the original offset. variable_set('date_temporary_timezone', $timezone_offset); // Set the timezone for this request only. $GLOBALS['conf']['date_default_timezone'] = 'UTC'; } // This allows update functions to tell if an upgrade from D6 is running. if (!empty($update_d6)) { variable_set('update_d6', TRUE); } } /** * A helper function that modules can use to assist with the transformation * from numeric block deltas to string block deltas during the 6.x -> 7.x * upgrade. * * @todo This function should be removed in 8.x. * * @param $sandbox * An array holding data for the batch process. * @param $renamed_deltas * An associative array. Keys are module names, values an associative array * mapping the old block deltas to the new block deltas for the module. * Example: * @code * $renamed_deltas = array( * 'mymodule' => * array( * 0 => 'mymodule-block-1', * 1 => 'mymodule-block-2', * ), * ); * @endcode * @param $moved_deltas * An associative array. Keys are source module names, values an associative * array mapping the (possibly renamed) block name to the new module name. * Example: * @code * $moved_deltas = array( * 'user' => * array( * 'navigation' => 'system', * ), * ); * @endcode */ function update_fix_d7_block_deltas(&$sandbox, $renamed_deltas, $moved_deltas) { // Loop through each block and make changes to the block tables. // Only run this the first time through the batch update. if (!isset($sandbox['progress'])) { // Determine whether to use the old or new block table names. $block_tables = db_table_exists('blocks') ? array('blocks', 'blocks_roles') : array('block', 'block_role'); foreach ($block_tables as $table) { foreach ($renamed_deltas as $module => $deltas) { foreach ($deltas as $old_delta => $new_delta) { // Only do the update if the old block actually exists. $block_exists = db_query("SELECT COUNT(*) FROM {" . $table . "} WHERE module = :module AND delta = :delta", array( ':module' => $module, ':delta' => $old_delta, )) ->fetchField(); if ($block_exists) { // Delete any existing blocks with the new module+delta. db_delete($table) ->condition('module', $module) ->condition('delta', $new_delta) ->execute(); // Rename the old block to the new module+delta. db_update($table) ->fields(array('delta' => $new_delta)) ->condition('module', $module) ->condition('delta', $old_delta) ->execute(); } } } foreach ($moved_deltas as $old_module => $deltas) { foreach ($deltas as $delta => $new_module) { // Only do the update if the old block actually exists. $block_exists = db_query("SELECT COUNT(*) FROM {" . $table . "} WHERE module = :module AND delta = :delta", array( ':module' => $old_module, ':delta' => $delta, )) ->fetchField(); if ($block_exists) { // Delete any existing blocks with the new module+delta. db_delete($table) ->condition('module', $new_module) ->condition('delta', $delta) ->execute(); // Rename the old block to the new module+delta. db_update($table) ->fields(array('module' => $new_module)) ->condition('module', $old_module) ->condition('delta', $delta) ->execute(); } } } } // Initialize batch update information. $sandbox['progress'] = 0; $sandbox['last_user_processed'] = -1; $sandbox['max'] = db_query("SELECT COUNT(*) FROM {users} WHERE data LIKE :block", array( ':block' => '%' . db_like(serialize('block')) . '%', )) ->fetchField(); } // Now do the batch update of the user-specific block visibility settings. $limit = 100; $result = db_select('users', 'u') ->fields('u', array('uid', 'data')) ->condition('uid', $sandbox['last_user_processed'], '>') ->condition('data', '%' . db_like(serialize('block')) . '%', 'LIKE') ->orderBy('uid', 'ASC') ->range(0, $limit) ->execute(); foreach ($result as $row) { $data = unserialize($row->data); $user_needs_update = FALSE; foreach ($renamed_deltas as $module => $deltas) { foreach ($deltas as $old_delta => $new_delta) { if (isset($data['block'][$module][$old_delta])) { // Transfer the old block visibility settings to the newly-renamed // block, and mark this user for a database update. $data['block'][$module][$new_delta] = $data['block'][$module][$old_delta]; unset($data['block'][$module][$old_delta]); $user_needs_update = TRUE; } } } foreach ($moved_deltas as $old_module => $deltas) { foreach ($deltas as $delta => $new_module) { if (isset($data['block'][$old_module][$delta])) { // Transfer the old block visibility settings to the moved // block, and mark this user for a database update. $data['block'][$new_module][$delta] = $data['block'][$old_module][$delta]; unset($data['block'][$old_module][$delta]); $user_needs_update = TRUE; } } } // Update the current user. if ($user_needs_update) { db_update('users') ->fields(array('data' => serialize($data))) ->condition('uid', $row->uid) ->execute(); } // Update our progress information for the batch update. $sandbox['progress']++; $sandbox['last_user_processed'] = $row->uid; } // Indicate our current progress to the batch update system. if ($sandbox['progress'] < $sandbox['max']) { $sandbox['#finished'] = $sandbox['progress'] / $sandbox['max']; } } /** * Perform Drupal 6.x to 7.x updates that are required for update.php * to function properly. * * This function runs when update.php is run the first time for 7.x, * even before updates are selected or performed. It is important * that if updates are not ultimately performed that no changes are * made which make it impossible to continue using the prior version. */ function update_fix_d7_requirements() { global $conf; // Rewrite the settings.php file if necessary, see // update_prepare_d7_bootstrap(). global $update_rewrite_settings, $db_url, $db_prefix; if (!empty($update_rewrite_settings)) { $databases = update_parse_db_url($db_url, $db_prefix); $salt = drupal_hash_base64(drupal_random_bytes(55)); file_put_contents(conf_path() . '/settings.php', "\n" . '$databases = ' . var_export($databases, TRUE) . ";\n\$drupal_hash_salt = '$salt';", FILE_APPEND); } if (drupal_get_installed_schema_version('system') < 7000 && !variable_get('update_d7_requirements', FALSE)) { // Change 6.x system table field values to 7.x equivalent. // Change field values. db_change_field('system', 'schema_version', 'schema_version', array( 'type' => 'int', 'size' => 'small', 'not null' => TRUE, 'default' => -1) ); db_change_field('system', 'status', 'status', array( 'type' => 'int', 'not null' => TRUE, 'default' => 0)); db_change_field('system', 'weight', 'weight', array( 'type' => 'int', 'not null' => TRUE, 'default' => 0)); db_change_field('system', 'bootstrap', 'bootstrap', array( 'type' => 'int', 'not null' => TRUE, 'default' => 0)); // Drop and recreate 6.x indexes. db_drop_index('system', 'bootstrap'); db_add_index('system', 'bootstrap', array( 'status', 'bootstrap', array('type', 12), 'weight', 'name')); db_drop_index('system' ,'modules'); db_add_index('system', 'modules', array(array( 'type', 12), 'status', 'weight', 'name')); db_drop_index('system', 'type_name'); db_add_index('system', 'type_name', array(array('type', 12), 'name')); // Add 7.x indexes. db_add_index('system', 'system_list', array('weight', 'name')); // Add the cache_path table. if (db_table_exists('cache_path')) { db_drop_table('cache_path'); } require_once('./modules/system/system.install'); $schema['cache_path'] = system_schema_cache_7054(); $schema['cache_path']['description'] = 'Cache table used for path alias lookups.'; db_create_table('cache_path', $schema['cache_path']); // system_update_7042() renames columns, but these are needed to bootstrap. // Add empty columns for now. db_add_field('url_alias', 'source', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')); db_add_field('url_alias', 'alias', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')); // Add new columns to {menu_router}. db_add_field('menu_router', 'delivery_callback', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')); db_add_field('menu_router', 'context', array( 'description' => 'Only for local tasks (tabs) - the context of a local task to control its placement.', 'type' => 'int', 'not null' => TRUE, 'default' => 0, )); db_drop_index('menu_router', 'tab_parent'); db_add_index('menu_router', 'tab_parent', array(array('tab_parent', 64), 'weight', 'title')); db_add_field('menu_router', 'theme_callback', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')); db_add_field('menu_router', 'theme_arguments', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')); // Add the role_permission table. $schema['role_permission'] = array( 'fields' => array( 'rid' => array( 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, ), 'permission' => array( 'type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => '', ), ), 'primary key' => array('rid', 'permission'), 'indexes' => array( 'permission' => array('permission'), ), ); db_create_table('role_permission', $schema['role_permission']); // Drops and recreates semaphore value index. db_drop_index('semaphore', 'value'); db_add_index('semaphore', 'value', array('value')); $schema['date_format_type'] = array( 'description' => 'Stores configured date format types.', 'fields' => array( 'type' => array( 'description' => 'The date format type, e.g. medium.', 'type' => 'varchar', 'length' => 64, 'not null' => TRUE, ), 'title' => array( 'description' => 'The human readable name of the format type.', 'type' => 'varchar', 'length' => 255, 'not null' => TRUE, ), 'locked' => array( 'description' => 'Whether or not this is a system provided format.', 'type' => 'int', 'size' => 'tiny', 'default' => 0, 'not null' => TRUE, ), ), 'primary key' => array('type'), ); $schema['date_formats'] = array( 'description' => 'Stores configured date formats.', 'fields' => array( 'dfid' => array( 'description' => 'The date format identifier.', 'type' => 'serial', 'not null' => TRUE, 'unsigned' => TRUE, ), 'format' => array( 'description' => 'The date format string.', 'type' => 'varchar', 'length' => 100, 'not null' => TRUE, ), 'type' => array( 'description' => 'The date format type, e.g. medium.', 'type' => 'varchar', 'length' => 64, 'not null' => TRUE, ), 'locked' => array( 'description' => 'Whether or not this format can be modified.', 'type' => 'int', 'size' => 'tiny', 'default' => 0, 'not null' => TRUE, ), ), 'primary key' => array('dfid'), 'unique keys' => array('formats' => array('format', 'type')), ); $schema['date_format_locale'] = array( 'description' => 'Stores configured date formats for each locale.', 'fields' => array( 'format' => array( 'description' => 'The date format string.', 'type' => 'varchar', 'length' => 100, 'not null' => TRUE, ), 'type' => array( 'description' => 'The date format type, e.g. medium.', 'type' => 'varchar', 'length' => 64, 'not null' => TRUE, ), 'language' => array( 'description' => 'A {languages}.language for this format to be used with.', 'type' => 'varchar', 'length' => 12, 'not null' => TRUE, ), ), 'primary key' => array('type', 'language'), ); db_create_table('date_format_type', $schema['date_format_type']); // Sites that have the Drupal 6 Date module installed already have the // following tables. if (db_table_exists('date_formats')) { db_rename_table('date_formats', 'd6_date_formats'); } db_create_table('date_formats', $schema['date_formats']); if (db_table_exists('date_format_locale')) { db_rename_table('date_format_locale', 'd6_date_format_locale'); } db_create_table('date_format_locale', $schema['date_format_locale']); // Add the queue table. $schema['queue'] = array( 'description' => 'Stores items in queues.', 'fields' => array( 'item_id' => array( 'type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE, 'description' => 'Primary Key: Unique item ID.', ), 'name' => array( 'type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '', 'description' => 'The queue name.', ), 'data' => array( 'type' => 'blob', 'not null' => FALSE, 'size' => 'big', 'serialize' => TRUE, 'description' => 'The arbitrary data for the item.', ), 'expire' => array( 'type' => 'int', 'not null' => TRUE, 'default' => 0, 'description' => 'Timestamp when the claim lease expires on the item.', ), 'created' => array( 'type' => 'int', 'not null' => TRUE, 'default' => 0, 'description' => 'Timestamp when the item was created.', ), ), 'primary key' => array('item_id'), 'indexes' => array( 'name_created' => array('name', 'created'), 'expire' => array('expire'), ), ); // Check for queue table that may remain from D5 or D6, if found //drop it. if (db_table_exists('queue')) { db_drop_table('queue'); } db_create_table('queue', $schema['queue']); // Create the sequences table. $schema['sequences'] = array( 'description' => 'Stores IDs.', 'fields' => array( 'value' => array( 'description' => 'The value of the sequence.', 'type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE, ), ), 'primary key' => array('value'), ); // Check for sequences table that may remain from D5 or D6, if found //drop it. if (db_table_exists('sequences')) { db_drop_table('sequences'); } db_create_table('sequences', $schema['sequences']); // Initialize the table with the maximum current increment of the tables // that will rely on it for their ids. $max_aid = db_query('SELECT MAX(aid) FROM {actions_aid}')->fetchField(); $max_uid = db_query('SELECT MAX(uid) FROM {users}')->fetchField(); $max_batch_id = db_query('SELECT MAX(bid) FROM {batch}')->fetchField(); db_insert('sequences')->fields(array('value' => max($max_aid, $max_uid, $max_batch_id)))->execute(); // Add column for locale context. if (db_table_exists('locales_source')) { db_add_field('locales_source', 'context', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '', 'description' => 'The context this string applies to.')); } // Rename 'site_offline_message' variable to 'maintenance_mode_message' // and 'site_offline' variable to 'maintenance_mode'. // Old variable is removed in update for system.module, see // system_update_7072(). if ($message = variable_get('site_offline_message', NULL)) { variable_set('maintenance_mode_message', $message); } // Old variable is removed in update for system.module, see // system_update_7069(). $site_offline = variable_get('site_offline', -1); if ($site_offline != -1) { variable_set('maintenance_mode', $site_offline); } // Add ssid column and index. db_add_field('sessions', 'ssid', array('description' => "Secure session ID. The value is generated by Drupal's session handlers.", 'type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => '')); db_add_index('sessions', 'ssid', array('ssid')); // Drop existing primary key. db_drop_primary_key('sessions'); // Add new primary key. db_add_primary_key('sessions', array('sid', 'ssid')); // Allow longer javascript file names. if (db_table_exists('languages')) { db_change_field('languages', 'javascript', 'javascript', array('type' => 'varchar', 'length' => 64, 'not null' => TRUE, 'default' => '')); } // Rename action description to label. db_change_field('actions', 'description', 'label', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '0')); variable_set('update_d7_requirements', TRUE); } update_fix_d7_install_profile(); } /** * Register the currently installed profile in the system table. * * Installation profiles are now treated as modules by Drupal, and have an * upgrade path based on their schema version in the system table. * * The installation profile will be set to schema_version 0, as it has already * been installed. Any other hook_update_N functions provided by the * installation profile will be run by update.php. */ function update_fix_d7_install_profile() { $profile = drupal_get_profile(); $results = db_select('system', 's') ->fields('s', array('name', 'schema_version')) ->condition('name', $profile) ->condition('type', 'module') ->execute() ->fetchAll(); if (empty($results)) { $filename = 'profiles/' . $profile . '/' . $profile . '.profile'; // Read profile info file $info = drupal_parse_info_file(dirname($filename) . '/' . $profile . '.info'); // Merge in defaults. $info = $info + array( 'dependencies' => array(), 'description' => '', 'package' => 'Other', 'version' => NULL, 'php' => DRUPAL_MINIMUM_PHP, 'files' => array(), ); $values = array( 'filename' => $filename, 'name' => $profile, 'info' => serialize($info), 'schema_version' => 0, 'type' => 'module', 'status' => 1, 'owner' => '', ); // Installation profile hooks are always executed last by the module system $values['weight'] = 1000; // Initializing the system table entry for the installation profile db_insert('system') ->fields(array_keys($values)) ->values($values) ->execute(); // Reset the cached schema version. drupal_get_installed_schema_version($profile, TRUE); // Load the updates again to make sure the installation profile updates // are loaded. drupal_load_updates(); } } /** * Parse pre-Drupal 7 database connection URLs and return D7 compatible array. * * @return * Drupal 7 DBTNG compatible array of database connection information. */ function update_parse_db_url($db_url, $db_prefix) { $databases = array(); if (!is_array($db_url)) { $db_url = array('default' => $db_url); } foreach ($db_url as $database => $url) { $url = parse_url($url); $databases[$database]['default'] = array( // MySQLi uses the mysql driver. 'driver' => $url['scheme'] == 'mysqli' ? 'mysql' : $url['scheme'], // Remove the leading slash to get the database name. 'database' => substr(urldecode($url['path']), 1), 'username' => urldecode($url['user']), 'password' => isset($url['pass']) ? urldecode($url['pass']) : '', 'host' => urldecode($url['host']), 'port' => isset($url['port']) ? urldecode($url['port']) : '', ); if (isset($db_prefix)) { $databases[$database]['default']['prefix'] = $db_prefix; } } return $databases; } /** * Constructs a session name compatible with a D6 environment. * * @return * D6-compatible session name string. * * @see drupal_settings_initialize() */ function update_get_d6_session_name() { global $base_url, $cookie_domain; $cookie_secure = ini_get('session.cookie_secure'); // If a custom cookie domain is set in settings.php, that variable forms // the basis of the session name. Re-compute the D7 hashing method to find // out if $cookie_domain was used as the session name. if (($cookie_secure ? 'SSESS' : 'SESS') . substr(hash('sha256', $cookie_domain), 0, 32) == 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('://', $base_url, 2); } if ($cookie_secure) { $session_name .= 'SSL'; } return 'SESS' . md5($session_name); } /** * Performs one update and stores the results for display on the results page. * * If an update function completes successfully, it should return a message * as a string indicating success, for example: * @code * return t('New index added successfully.'); * @endcode * * Alternatively, it may return nothing. In that case, no message * will be displayed at all. * * If it fails for whatever reason, it should throw an instance of * DrupalUpdateException with an appropriate error message, for example: * @code * throw new DrupalUpdateException(t('Description of what went wrong')); * @endcode * * If an exception is thrown, the current update and all updates that depend on * it will be aborted. The schema version will not be updated in this case, and * all the aborted updates will continue to appear on update.php as updates * that have not yet been run. * * If an update function needs to be re-run as part of a batch process, it * should accept the $sandbox array by reference as its first parameter * and set the #finished property to the percentage completed that it is, as a * fraction of 1. * * @param $module * The module whose update will be run. * @param $number * The update number to run. * @param $dependency_map * An array whose keys are the names of all update functions that will be * performed during this batch process, and whose values are arrays of other * update functions that each one depends on. * @param $context * The batch context array. * * @see update_resolve_dependencies() */ function update_do_one($module, $number, $dependency_map, &$context) { $function = $module . '_update_' . $number; // If this update was aborted in a previous step, or has a dependency that // was aborted in a previous step, go no further. if (!empty($context['results']['#abort']) && array_intersect($context['results']['#abort'], array_merge($dependency_map, array($function)))) { return; } $ret = array(); if (function_exists($function)) { try { $ret['results']['query'] = $function($context['sandbox']); $ret['results']['success'] = TRUE; } // @TODO We may want to do different error handling for different // exception types, but for now we'll just log the exception and // return the message for printing. catch (Exception $e) { watchdog_exception('update', $e); require_once DRUPAL_ROOT . '/includes/errors.inc'; $variables = _drupal_decode_exception($e); // The exception message is run through check_plain() by _drupal_decode_exception(). $ret['#abort'] = array('success' => FALSE, 'query' => t('%type: !message in %function (line %line of %file).', $variables)); } } if (isset($context['sandbox']['#finished'])) { $context['finished'] = $context['sandbox']['#finished']; unset($context['sandbox']['#finished']); } if (!isset($context['results'][$module])) { $context['results'][$module] = array(); } if (!isset($context['results'][$module][$number])) { $context['results'][$module][$number] = array(); } $context['results'][$module][$number] = array_merge($context['results'][$module][$number], $ret); if (!empty($ret['#abort'])) { // Record this function in the list of updates that were aborted. $context['results']['#abort'][] = $function; } // Record the schema update if it was completed successfully. if ($context['finished'] == 1 && empty($ret['#abort'])) { drupal_set_installed_schema_version($module, $number); } $context['message'] = 'Updating ' . check_plain($module) . ' module'; } /** * @class Exception class used to throw error if a module update fails. */ class DrupalUpdateException extends Exception { } /** * Starts the database update batch process. * * @param $start * An array whose keys contain the names of modules to be updated during the * current batch process, and whose values contain the number of the first * requested update for that module. The actual updates that are run (and the * order they are run in) will depend on the results of passing this data * through the update dependency system. * @param $redirect * Path to redirect to when the batch has finished processing. * @param $url * URL of the batch processing page (should only be used for separate * scripts like update.php). * @param $batch * Optional parameters to pass into the batch API. * @param $redirect_callback * (optional) Specify a function to be called to redirect to the progressive * processing page. * * @see update_resolve_dependencies() */ function update_batch($start, $redirect = NULL, $url = NULL, $batch = array(), $redirect_callback = 'drupal_goto') { // During the update, bring the site offline so that schema changes do not // affect visiting users. $_SESSION['maintenance_mode'] = variable_get('maintenance_mode', FALSE); if ($_SESSION['maintenance_mode'] == FALSE) { variable_set('maintenance_mode', TRUE); } // Resolve any update dependencies to determine the actual updates that will // be run and the order they will be run in. $updates = update_resolve_dependencies($start); // Store the dependencies for each update function in an array which the // batch API can pass in to the batch operation each time it is called. (We // do not store the entire update dependency array here because it is // potentially very large.) $dependency_map = array(); foreach ($updates as $function => $update) { $dependency_map[$function] = !empty($update['reverse_paths']) ? array_keys($update['reverse_paths']) : array(); } $operations = array(); foreach ($updates as $update) { if ($update['allowed']) { // Set the installed version of each module so updates will start at the // correct place. (The updates are already sorted, so we can simply base // this on the first one we come across in the above foreach loop.) if (isset($start[$update['module']])) { drupal_set_installed_schema_version($update['module'], $update['number'] - 1); unset($start[$update['module']]); } // Add this update function to the batch. $function = $update['module'] . '_update_' . $update['number']; $operations[] = array('update_do_one', array($update['module'], $update['number'], $dependency_map[$function])); } } $batch['operations'] = $operations; $batch += array( 'title' => 'Updating', 'init_message' => 'Starting updates', 'error_message' => 'An unrecoverable error has occurred. You can find the error message below. It is advised to copy it to the clipboard for reference.', 'finished' => 'update_finished', 'file' => 'includes/update.inc', ); batch_set($batch); batch_process($redirect, $url, $redirect_callback); } /** * Finishes the update process and stores the results for eventual display. * * After the updates run, all caches are flushed. The update results are * stored into the session (for example, to be displayed on the update results * page in update.php). Additionally, if the site was off-line, now that the * update process is completed, the site is set back online. * * @param $success * Indicate that the batch API tasks were all completed successfully. * @param $results * An array of all the results that were updated in update_do_one(). * @param $operations * A list of all the operations that had not been completed by the batch API. * * @see update_batch() */ function update_finished($success, $results, $operations) { // Remove the D6 upgrade flag variable so that subsequent update runs do not // get the wrong context. variable_del('update_d6'); // Clear the caches in case the data has been updated. drupal_flush_all_caches(); $_SESSION['update_results'] = $results; $_SESSION['update_success'] = $success; $_SESSION['updates_remaining'] = $operations; // Now that the update is done, we can put the site back online if it was // previously in maintenance mode. if (isset($_SESSION['maintenance_mode']) && $_SESSION['maintenance_mode'] == FALSE) { variable_set('maintenance_mode', FALSE); unset($_SESSION['maintenance_mode']); } } /** * Returns a list of all the pending database updates. * * @return * An associative array keyed by module name which contains all information * about database updates that need to be run, and any updates that are not * going to proceed due to missing requirements. The system module will * always be listed first. * * The subarray for each module can contain the following keys: * - start: The starting update that is to be processed. If this does not * exist then do not process any updates for this module as there are * other requirements that need to be resolved. * - warning: Any warnings about why this module can not be updated. * - pending: An array of all the pending updates for the module including * the update number and the description from source code comment for * each update function. This array is keyed by the update number. */ function update_get_update_list() { // Make sure that the system module is first in the list of updates. $ret = array('system' => array()); $modules = drupal_get_installed_schema_version(NULL, FALSE, TRUE); foreach ($modules as $module => $schema_version) { // Skip uninstalled and incompatible modules. if ($schema_version == SCHEMA_UNINSTALLED || update_check_incompatibility($module)) { continue; } // Otherwise, get the list of updates defined by this module. $updates = drupal_get_schema_versions($module); if ($updates !== FALSE) { // module_invoke returns NULL for nonexisting hooks, so if no updates // are removed, it will == 0. $last_removed = module_invoke($module, 'update_last_removed'); if ($schema_version < $last_removed) { $ret[$module]['warning'] = '<em>' . $module . '</em> module can not be updated. Its schema version is ' . $schema_version . '. Updates up to and including ' . $last_removed . ' have been removed in this release. In order to update <em>' . $module . '</em> module, you will first <a href="http://drupal.org/upgrade">need to upgrade</a> to the last version in which these updates were available.'; continue; } $updates = drupal_map_assoc($updates); foreach (array_keys($updates) as $update) { if ($update > $schema_version) { // The description for an update comes from its Doxygen. $func = new ReflectionFunction($module . '_update_' . $update); $description = str_replace(array("\n", '*', '/'), '', $func->getDocComment()); $ret[$module]['pending'][$update] = "$update - $description"; if (!isset($ret[$module]['start'])) { $ret[$module]['start'] = $update; } } } if (!isset($ret[$module]['start']) && isset($ret[$module]['pending'])) { $ret[$module]['start'] = $schema_version; } } } if (empty($ret['system'])) { unset($ret['system']); } return $ret; } /** * Resolves dependencies in a set of module updates, and orders them correctly. * * This function receives a list of requested module updates and determines an * appropriate order to run them in such that all update dependencies are met. * Any updates whose dependencies cannot be met are included in the returned * array but have the key 'allowed' set to FALSE; the calling function should * take responsibility for ensuring that these updates are ultimately not * performed. * * In addition, the returned array also includes detailed information about the * dependency chain for each update, as provided by the depth-first search * algorithm in drupal_depth_first_search(). * * @param $starting_updates * An array whose keys contain the names of modules with updates to be run * and whose values contain the number of the first requested update for that * module. * * @return * An array whose keys are the names of all update functions within the * provided modules that would need to be run in order to fulfill the * request, arranged in the order in which the update functions should be * run. (This includes the provided starting update for each module and all * subsequent updates that are available.) The values are themselves arrays * containing all the keys provided by the drupal_depth_first_search() * algorithm, which encode detailed information about the dependency chain * for this update function (for example: 'paths', 'reverse_paths', 'weight', * and 'component'), as well as the following additional keys: * - 'allowed': A boolean which is TRUE when the update function's * dependencies are met, and FALSE otherwise. Calling functions should * inspect this value before running the update. * - 'missing_dependencies': An array containing the names of any other * update functions that are required by this one but that are unavailable * to be run. This array will be empty when 'allowed' is TRUE. * - 'module': The name of the module that this update function belongs to. * - 'number': The number of this update function within that module. * * @see drupal_depth_first_search() */ function update_resolve_dependencies($starting_updates) { // Obtain a dependency graph for the requested update functions. $update_functions = update_get_update_function_list($starting_updates); $graph = update_build_dependency_graph($update_functions); // Perform the depth-first search and sort the results. require_once DRUPAL_ROOT . '/includes/graph.inc'; drupal_depth_first_search($graph); uasort($graph, 'drupal_sort_weight'); foreach ($graph as $function => &$data) { $module = $data['module']; $number = $data['number']; // If the update function is missing and has not yet been performed, mark // it and everything that ultimately depends on it as disallowed. if (update_is_missing($module, $number, $update_functions) && !update_already_performed($module, $number)) { $data['allowed'] = FALSE; foreach (array_keys($data['paths']) as $dependent) { $graph[$dependent]['allowed'] = FALSE; $graph[$dependent]['missing_dependencies'][] = $function; } } elseif (!isset($data['allowed'])) { $data['allowed'] = TRUE; $data['missing_dependencies'] = array(); } // Now that we have finished processing this function, remove it from the // graph if it was not part of the original list. This ensures that we // never try to run any updates that were not specifically requested. if (!isset($update_functions[$module][$number])) { unset($graph[$function]); } } return $graph; } /** * Returns an organized list of update functions for a set of modules. * * @param $starting_updates * An array whose keys contain the names of modules and whose values contain * the number of the first requested update for that module. * * @return * An array containing all the update functions that should be run for each * module, including the provided starting update and all subsequent updates * that are available. The keys of the array contain the module names, and * each value is an ordered array of update functions, keyed by the update * number. * * @see update_resolve_dependencies() */ function update_get_update_function_list($starting_updates) { // Go through each module and find all updates that we need (including the // first update that was requested and any updates that run after it). $update_functions = array(); foreach ($starting_updates as $module => $version) { $update_functions[$module] = array(); $updates = drupal_get_schema_versions($module); if ($updates !== FALSE) { $max_version = max($updates); if ($version <= $max_version) { foreach ($updates as $update) { if ($update >= $version) { $update_functions[$module][$update] = $module . '_update_' . $update; } } } } } return $update_functions; } /** * Constructs a graph which encodes the dependencies between module updates. * * This function returns an associative array which contains a "directed graph" * representation of the dependencies between a provided list of update * functions, as well as any outside update functions that they directly depend * on but that were not in the provided list. The vertices of the graph * represent the update functions themselves, and each edge represents a * requirement that the first update function needs to run before the second. * For example, consider this graph: * * system_update_7000 ---> system_update_7001 ---> system_update_7002 * * Visually, this indicates that system_update_7000() must run before * system_update_7001(), which in turn must run before system_update_7002(). * * The function takes into account standard dependencies within each module, as * shown above (i.e., the fact that each module's updates must run in numerical * order), but also finds any cross-module dependencies that are defined by * modules which implement hook_update_dependencies(), and builds them into the * graph as well. * * @param $update_functions * An organized array of update functions, in the format returned by * update_get_update_function_list(). * * @return * A multidimensional array representing the dependency graph, suitable for * passing in to drupal_depth_first_search(), but with extra information * about each update function also included. Each array key contains the name * of an update function, including all update functions from the provided * list as well as any outside update functions which they directly depend * on. Each value is an associative array containing the following keys: * - 'edges': A representation of any other update functions that immediately * depend on this one. See drupal_depth_first_search() for more details on * the format. * - 'module': The name of the module that this update function belongs to. * - 'number': The number of this update function within that module. * * @see drupal_depth_first_search() * @see update_resolve_dependencies() */ function update_build_dependency_graph($update_functions) { // Initialize an array that will define a directed graph representing the // dependencies between update functions. $graph = array(); // Go through each update function and build an initial list of dependencies. foreach ($update_functions as $module => $functions) { $previous_function = NULL; foreach ($functions as $number => $function) { // Add an edge to the directed graph representing the fact that each // update function in a given module must run after the update that // numerically precedes it. if ($previous_function) { $graph[$previous_function]['edges'][$function] = TRUE; } $previous_function = $function; // Define the module and update number associated with this function. $graph[$function]['module'] = $module; $graph[$function]['number'] = $number; } } // Now add any explicit update dependencies declared by modules. $update_dependencies = update_retrieve_dependencies(); foreach ($graph as $function => $data) { if (!empty($update_dependencies[$data['module']][$data['number']])) { foreach ($update_dependencies[$data['module']][$data['number']] as $module => $number) { $dependency = $module . '_update_' . $number; $graph[$dependency]['edges'][$function] = TRUE; $graph[$dependency]['module'] = $module; $graph[$dependency]['number'] = $number; } } } return $graph; } /** * Determines if a module update is missing or unavailable. * * @param $module * The name of the module. * @param $number * The number of the update within that module. * @param $update_functions * An organized array of update functions, in the format returned by * update_get_update_function_list(). This should represent all module * updates that are requested to run at the time this function is called. * * @return * TRUE if the provided module update is not installed or is not in the * provided list of updates to run; FALSE otherwise. */ function update_is_missing($module, $number, $update_functions) { return !isset($update_functions[$module][$number]) || !function_exists($update_functions[$module][$number]); } /** * Determines if a module update has already been performed. * * @param $module * The name of the module. * @param $number * The number of the update within that module. * * @return * TRUE if the database schema indicates that the update has already been * performed; FALSE otherwise. */ function update_already_performed($module, $number) { return $number <= drupal_get_installed_schema_version($module); } /** * Invokes hook_update_dependencies() in all installed modules. * * This function is similar to module_invoke_all(), with the main difference * that it does not require that a module be enabled to invoke its hook, only * that it be installed. This allows the update system to properly perform * updates even on modules that are currently disabled. * * @return * An array of return values obtained by merging the results of the * hook_update_dependencies() implementations in all installed modules. * * @see module_invoke_all() * @see hook_update_dependencies() */ function update_retrieve_dependencies() { $return = array(); // Get a list of installed modules, arranged so that we invoke their hooks in // the same order that module_invoke_all() does. $modules = db_query("SELECT name FROM {system} WHERE type = 'module' AND schema_version <> :schema ORDER BY weight ASC, name ASC", array(':schema' => SCHEMA_UNINSTALLED))->fetchCol(); foreach ($modules as $module) { $function = $module . '_update_dependencies'; if (function_exists($function)) { $result = $function(); // Each implementation of hook_update_dependencies() returns a // multidimensional, associative array containing some keys that // represent module names (which are strings) and other keys that // represent update function numbers (which are integers). We cannot use // array_merge_recursive() to properly merge these results, since it // treats strings and integers differently. Therefore, we have to // explicitly loop through the expected array structure here and perform // the merge manually. if (isset($result) && is_array($result)) { foreach ($result as $module => $module_data) { foreach ($module_data as $update => $update_data) { foreach ($update_data as $module_dependency => $update_dependency) { // If there are redundant dependencies declared for the same // update function (so that it is declared to depend on more than // one update from a particular module), record the dependency on // the highest numbered update here, since that automatically // implies the previous ones. For example, if one module's // implementation of hook_update_dependencies() required this // ordering: // // system_update_7001 ---> user_update_7000 // // but another module's implementation of the hook required this // one: // // system_update_7002 ---> user_update_7000 // // we record the second one, since system_update_7001() is always // guaranteed to run before system_update_7002() anyway (within // an individual module, updates are always run in numerical // order). if (!isset($return[$module][$update][$module_dependency]) || $update_dependency > $return[$module][$update][$module_dependency]) { $return[$module][$update][$module_dependency] = $update_dependency; } } } } } } } return $return; }
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