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<?php
/**
* @file
* Callbacks and related functions invoked by authorize.php to update projects.
*
* We use the Batch API to actually update each individual project on the site.
* All of the code in this file is run at a low bootstrap level (modules are not
* loaded), so these functions cannot assume access to the rest of the code of
* the Update Manager module.
*/
/**
* Updates existing projects when invoked by authorize.php.
*
* Callback for system_authorized_init() in
* update_manager_update_ready_form_submit().
*
* @param $filetransfer
* The FileTransfer object created by authorize.php for use during this
* operation.
* @param $projects
* A nested array of projects to install into the live webroot, keyed by
* project name. Each subarray contains the following keys:
* - project: The canonical project short name.
* - updater_name: The name of the Updater class to use for this project.
* - local_url: The locally installed location of new code to update with.
*/
function update_authorize_run_update($filetransfer, $projects) {
$operations = array();
foreach ($projects as $project => $project_info) {
$operations[] = array(
'update_authorize_batch_copy_project',
array(
$project_info['project'],
$project_info['updater_name'],
$project_info['local_url'],
$filetransfer,
),
);
}
$batch = array(
'title' => t('Installing updates'),
'init_message' => t('Preparing to update your site'),
'operations' => $operations,
'finished' => 'update_authorize_update_batch_finished',
'file' => drupal_get_path('module', 'update') . '/update.authorize.inc',
);
batch_set($batch);
// Invoke the batch via authorize.php.
system_authorized_batch_process();
}
/**
* Installs a new project when invoked by authorize.php.
*
* Callback for system_authorized_init() in
* update_manager_install_form_submit().
*
* @param FileTransfer $filetransfer
* The FileTransfer object created by authorize.php for use during this
* operation.
* @param string $project
* The canonical project short name (e.g., {system}.name).
* @param string $updater_name
* The name of the Updater class to use for installing this project.
* @param string $local_url
* The URL to the locally installed temp directory where the project has
* already been downloaded and extracted into.
*/
function update_authorize_run_install($filetransfer, $project, $updater_name, $local_url) {
$operations[] = array(
'update_authorize_batch_copy_project',
array(
$project,
$updater_name,
$local_url,
$filetransfer,
),
);
// @todo Instantiate our Updater to set the human-readable title?
$batch = array(
'title' => t('Installing %project', array('%project' => $project)),
'init_message' => t('Preparing to install'),
'operations' => $operations,
// @todo Use a different finished callback for different messages?
'finished' => 'update_authorize_install_batch_finished',
'file' => drupal_get_path('module', 'update') . '/update.authorize.inc',
);
batch_set($batch);
// Invoke the batch via authorize.php.
system_authorized_batch_process();
}
/**
* Batch callback: Copies project to its proper place when authorized to do so.
*
* @param string $project
* The canonical short name of the project being installed.
* @param string $updater_name
* The name of the Updater class to use for installing this project.
* @param string $local_url
* The URL to the locally installed temp directory where the project has
* already been downloaded and extracted into.
* @param FileTransfer $filetransfer
* The FileTransfer object to use for performing this operation.
* @param array $context
* Reference to an array used for Batch API storage.
*/
function update_authorize_batch_copy_project($project, $updater_name, $local_url, $filetransfer, &$context) {
// Initialize some variables in the Batch API $context array.
if (!isset($context['results']['log'])) {
$context['results']['log'] = array();
}
if (!isset($context['results']['log'][$project])) {
$context['results']['log'][$project] = array();
}
if (!isset($context['results']['tasks'])) {
$context['results']['tasks'] = array();
}
// The batch API uses a session, and since all the arguments are serialized
// and unserialized between requests, although the FileTransfer object itself
// will be reconstructed, the connection pointer itself will be lost. However,
// the FileTransfer object will still have the connection variable, even
// though the connection itself is now gone. So, although it's ugly, we have
// to unset the connection variable at this point so that the FileTransfer
// object will re-initiate the actual connection.
unset($filetransfer->connection);
if (!empty($context['results']['log'][$project]['#abort'])) {
$context['finished'] = 1;
return;
}
$updater = new $updater_name($local_url);
try {
if ($updater->isInstalled()) {
// This is an update.
$tasks = $updater->update($filetransfer);
}
else {
$tasks = $updater->install($filetransfer);
}
}
catch (UpdaterException $e) {
_update_batch_create_message($context['results']['log'][$project], t('Error installing / updating'), FALSE);
_update_batch_create_message($context['results']['log'][$project], $e->getMessage(), FALSE);
$context['results']['log'][$project]['#abort'] = TRUE;
return;
}
_update_batch_create_message($context['results']['log'][$project], t('Installed %project_name successfully', array('%project_name' => $project)));
if (!empty($tasks)) {
$context['results']['tasks'] += $tasks;
}
// This particular operation is now complete, even though the batch might
// have other operations to perform.
$context['finished'] = 1;
}
/**
* Batch callback: Performs actions when the authorized update batch is done.
*
* This processes the results and stashes them into SESSION such that
* authorize.php will render a report. Also responsible for putting the site
* back online and clearing the update status cache after a successful update.
*
* @param $success
* TRUE if the batch operation was successful; FALSE if there were errors.
* @param $results
* An associative array of results from the batch operation.
*/
function update_authorize_update_batch_finished($success, $results) {
foreach ($results['log'] as $project => $messages) {
if (!empty($messages['#abort'])) {
$success = FALSE;
}
}
$offline = variable_get('maintenance_mode', FALSE);
if ($success) {
// Now that the update completed, we need to clear the cache of available
// update data and recompute our status, so prevent show bogus results.
_update_authorize_clear_update_status();
// Take the site out of maintenance mode if it was previously that way.
if ($offline && isset($_SESSION['maintenance_mode']) && $_SESSION['maintenance_mode'] == FALSE) {
variable_set('maintenance_mode', FALSE);
$page_message = array(
'message' => t('Update was completed successfully. Your site has been taken out of maintenance mode.'),
'type' => 'status',
);
}
else {
$page_message = array(
'message' => t('Update was completed successfully.'),
'type' => 'status',
);
}
}
elseif (!$offline) {
$page_message = array(
'message' => t('Update failed! See the log below for more information.'),
'type' => 'error',
);
}
else {
$page_message = array(
'message' => t('Update failed! See the log below for more information. Your site is still in maintenance mode.'),
'type' => 'error',
);
}
// Since we're doing an update of existing code, always add a task for
// running update.php.
$results['tasks'][] = t('Your modules have been downloaded and updated.');
$results['tasks'][] = t('<a href="@update">Run database updates</a>', array('@update' => base_path() . 'update.php'));
// Unset the variable since it is no longer needed.
unset($_SESSION['maintenance_mode']);
// Set all these values into the SESSION so authorize.php can display them.
$_SESSION['authorize_results']['success'] = $success;
$_SESSION['authorize_results']['page_message'] = $page_message;
$_SESSION['authorize_results']['messages'] = $results['log'];
$_SESSION['authorize_results']['tasks'] = $results['tasks'];
$_SESSION['authorize_operation']['page_title'] = t('Update manager');
}
/**
* Batch callback: Performs actions when the authorized install batch is done.
*
* This processes the results and stashes them into SESSION such that
* authorize.php will render a report. Also responsible for putting the site
* back online after a successful install if necessary.
*
* @param $success
* TRUE if the batch operation was a success; FALSE if there were errors.
* @param $results
* An associative array of results from the batch operation.
*/
function update_authorize_install_batch_finished($success, $results) {
foreach ($results['log'] as $project => $messages) {
if (!empty($messages['#abort'])) {
$success = FALSE;
}
}
$offline = variable_get('maintenance_mode', FALSE);
if ($success) {
// Take the site out of maintenance mode if it was previously that way.
if ($offline && isset($_SESSION['maintenance_mode']) && $_SESSION['maintenance_mode'] == FALSE) {
variable_set('maintenance_mode', FALSE);
$page_message = array(
'message' => t('Installation was completed successfully. Your site has been taken out of maintenance mode.'),
'type' => 'status',
);
}
else {
$page_message = array(
'message' => t('Installation was completed successfully.'),
'type' => 'status',
);
}
}
elseif (!$success && !$offline) {
$page_message = array(
'message' => t('Installation failed! See the log below for more information.'),
'type' => 'error',
);
}
else {
$page_message = array(
'message' => t('Installation failed! See the log below for more information. Your site is still in maintenance mode.'),
'type' => 'error',
);
}
// Unset the variable since it is no longer needed.
unset($_SESSION['maintenance_mode']);
// Set all these values into the SESSION so authorize.php can display them.
$_SESSION['authorize_results']['success'] = $success;
$_SESSION['authorize_results']['page_message'] = $page_message;
$_SESSION['authorize_results']['messages'] = $results['log'];
$_SESSION['authorize_results']['tasks'] = $results['tasks'];
$_SESSION['authorize_operation']['page_title'] = t('Update manager');
}
/**
* Creates a structure of log messages.
*
* @param array $project_results
* An associative array of results from the batch operation.
* @param string $message
* A string containing a log message.
* @param bool $success
* (optional) TRUE if the operation the message is about was a success, FALSE
* if there were errors. Defaults to TRUE.
*/
function _update_batch_create_message(&$project_results, $message, $success = TRUE) {
$project_results[] = array('message' => $message, 'success' => $success);
}
/**
* Clears cached available update status data.
*
* Since this function is run at such a low bootstrap level, the Update Manager
* module is not loaded. So, we can't just call _update_cache_clear(). However,
* the database is bootstrapped, so we can do a query ourselves to clear out
* what we want to clear.
*
* Note that we do not want to just truncate the table, since that would remove
* items related to currently pending fetch attempts.
*
* @see update_authorize_update_batch_finished()
* @see _update_cache_clear()
*/
function _update_authorize_clear_update_status() {
$query = db_delete('cache_update');
$query->condition(
db_or()
->condition('cid', 'update_project_%', 'LIKE')
->condition('cid', 'available_releases::%', 'LIKE')
);
$query->execute();
}