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<?php // phpcs:ignore
/**
* Authenticated AJAX action controller
*/
class Snapshot_Controller_Full_Ajax extends Snapshot_Controller_Full {
const OPTIONS_FLAG = 'snapshot_ajax_backup_run';
/**
* Internal instance reference
*
* @var object Snapshot_Controller_Full_Ajax instance
*/
private static $_instance;
/**
* Singleton instance getter
*
* @return object Snapshot_Controller_Full_Ajax instance
*/
public static function get() {
if ( empty( self::$_instance ) ) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Dispatch AJAX actions handling.
*/
public function run() {
add_action( 'wp_ajax_snapshot-full_backup-check_requirements', array( $this, 'json_check_requirements' ) );
add_action( 'wp_ajax_snapshot-full_backup-download', array( $this, 'json_download_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-delete', array( $this, 'json_delete_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-get_log', array( $this, 'json_get_log' ) );
add_action( 'wp_ajax_snapshot-full_backup-reload', array( $this, 'json_reload_backups' ) );
add_action( 'wp_ajax_snapshot-full_backup-reset_api', array( $this, 'json_reset_api' ) );
add_action( 'wp_ajax_snapshot-full_backup-start', array( $this, 'json_start_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-estimate', array( $this, 'json_estimate_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-process', array( $this, 'json_process_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-finish', array( $this, 'json_finish_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-abort', array( $this, 'json_finish_backup' ) );
add_action( 'wp_ajax_snapshot-full_backup-restore', array( $this, 'json_start_restore' ) );
add_action( 'wp_ajax_snapshot-full_backup-upload', array( $this, 'json_start_upload' ) );
add_action( 'wp_ajax_snapshot-full_backup-abort-upload', array( $this, 'json_abort_upload' ) );
add_action( 'wp_ajax_snapshot-full_backup-abort-processing', array( $this, 'json_abort_backup_processing' ) );
add_action( 'wp_ajax_snapshot-full_backup-exchange_key', array( $this, 'json_remote_key_exchange' ) );
add_action( 'wp_ajax_snapshot-full_backup-deactivate', array( $this, 'json_deactivate' ) );
add_site_option( self::OPTIONS_FLAG, '' );
}
/**
* Deactivate
*/
public function json_deactivate() {
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can reload */
}
return wp_send_json_success( Snapshot_Controller_Full_Admin::get()->deactivate() );
}
/**
* Runs on deactivation
*/
public function deactivate() {
delete_site_option( self::OPTIONS_FLAG );
}
/**
* Outputs log file content
*/
public function json_get_log() {
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can reload */
}
$response = __( 'Your log file is empty', SNAPSHOT_I18N_DOMAIN );
$content = Snapshot_Helper_Log::get()->get_log();
if ( ! empty( $content ) ) {
$response = '<textarea readonly style="width:100%; height:100%">' . esc_textarea( $content ) . '</textarea>';
}
die( wp_kses_post( $response ) );
}
/**
* Sets up backup key exchange
*/
public function json_remote_key_exchange() {
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can reload */
}
$rmt = Snapshot_Model_Full_Remote_Key::get();
$token = $rmt->get_remote_key();
if ( empty( $token ) ) {
return wp_send_json_error( __( 'Unable to get exchange token', SNAPSHOT_I18N_DOMAIN ) );
}
$key = $rmt->get_remote_key( $token );
if ( empty( $key ) ) {
return wp_send_json_error( __( 'Unable to exchange key', SNAPSHOT_I18N_DOMAIN ) );
}
$status = $rmt->set_key( $key );
if ( $status ) {
$this->_model->set_config( 'active', true ); /* Also activate */
}
return wp_send_json_success( $status );
}
/**
* Forces backup list reloads
*/
public function json_reload_backups() {
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can reload */
}
$status = $this->_model->remote()->reset_backups_cache( true );
wp_send_json(array(
'status' => $status,
));
}
/**
* Forces S3 API info refresh
*
* @since v3.0.5-BETA-6
*/
public function json_reset_api() {
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can do this */
}
$hub = Snapshot_Controller_Full_Hub::get();
$status = $hub->clear_api_cache();
$status = is_wp_error( $status )
? $status->get_error_message()
: 0
;
wp_send_json(array(
'status' => $status,
));
}
/**
* Prepare backup for download
*/
public function json_download_backup() {
check_admin_referer( 'snapshot_download_backup' );
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can restore */
}
if ( ! $this->_is_backup_processing_ready() ) {
die;
}
$data = stripslashes_deep( $_POST );
$timestamp = ! empty( $data['idx'] ) && is_numeric( $data['idx'] )
? $data['idx']
: false
;
if ( ! $timestamp ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
));
}
$archive_path = $this->_model->local()->get_backup( $timestamp );
if ( empty( $archive_path ) || ! file_exists( $archive_path ) ) {
// No local backup, try and get the remote URL instead.
$archive_path = $this->_model->remote()->get_backup_link( $timestamp );
if ( empty( $archive_path ) ) {
// Something went wrong with determining the remote URL.
wp_send_json(array(
'task' => 'fetching',
'error' => ! ! $this->_model->has_errors(),
'status' => false,
));
} else {
// All good.
wp_send_json(array(
'task' => 'clearing',
'status' => true,
'nonce' => wp_create_nonce( 'snapshot-full_backups-download' ),
));
}
} else {
// If we don't have the full archive path yet, we're still fetching the file.
if ( ! file_exists( $archive_path ) ) {
wp_send_json(array(
'task' => 'fetching',
'error' => ! ! $this->_model->has_errors(),
'status' => false,
));
} else {
wp_send_json(array(
'task' => 'clearing',
'status' => true,
'nonce' => wp_create_nonce( 'snapshot-full_backups-download' ),
));
}
}
// We shouldn't be getting here but oh well.
die;
}
/**
* Delete remote backup and force cache cleanup.
*/
public function json_delete_backup() {
check_admin_referer( 'snapshot_delete_backup' );
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can restore */
}
if ( ! $this->_is_backup_processing_ready() ) {
die;
}
$data = stripslashes_deep( $_POST );
$timestamp = ! empty( $data['idx'] ) && is_numeric( $data['idx'] )
? $data['idx']
: false
;
if ( ! $timestamp ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
));
}
$status = $this->_model->delete_backup( $timestamp );
if ( ! empty( $status ) ) {
// Update all settings, new list included.
$this->_model->update_remote_schedule();
}
wp_send_json(array(
'task' => 'clearing',
'status' => $status,
));
}
/**
* Check requirements
*/
public function json_check_requirements() {
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die;
}
$minimum_exec_time = 150;
// Check WP version.
wp_version_check();
$wp_state_response = get_site_transient( 'update_core' );
$wp_state = ! empty( $wp_state_response->updates[0]->response )
? ('latest' === $wp_state_response->updates[0]->response)
: false
;
if ( ! $wp_state ) {
Snapshot_Helper_Log::note( 'There has been an issue with determining WordPress state' );
}
// Fileset.
$set = Snapshot_Model_Fileset::get_source( 'full' );
$location = $set->get_root();
if ( empty( $location ) || ! file_exists( $location ) ) {
Snapshot_Helper_Log::note( 'There has been an issue with determining location' );
}
// Tables.
$tables = Snapshot_Model_Queue_Tableset::get_all_tables();
if ( empty( $tables ) ) {
Snapshot_Helper_Log::note( 'There has been an issue with determining your database setup' );
}
$open_basedir = ini_get( 'open_basedir' );
if ( $open_basedir ) {
Snapshot_Helper_Log::note( 'It seems that open_basedir is in effect' );
}
$exec_time = ini_get( 'max_execution_time' );
$runtime = (int) $exec_time >= $minimum_exec_time;
if ( ! $runtime ) {
Snapshot_Helper_Log::note( "Run time might not be enough: {$exec_time}" );
}
$mysqli = (bool) function_exists( 'mysqli_connect' );
if ( ! $mysqli ) {
Snapshot_Helper_Log::note( 'We do not seem to have mysqli available' );
}
wp_send_json(array(
'webserver' => array(
'system' => array(
'value' => $_SERVER['SERVER_SOFTWARE'],
'result' => true,
),
),
'php' => array(
'basedir' => array(
'value' => $open_basedir ? __( 'Enabled', SNAPSHOT_I18N_DOMAIN ) : __( 'Disabled', SNAPSHOT_I18N_DOMAIN ),
'result' => ! $open_basedir,
),
'maxtime' => array(
'value' => $exec_time,
'result' => $runtime,
),
'mysqli' => array(
'value' => (int) $mysqli,
'result' => (bool) $mysqli,
),
),
'wordpress' => array(
'version' => array(
'value' => get_bloginfo( 'version' ),
'result' => (bool) $wp_state,
),
),
'fileset' => array(
'location' => array(
'value' => basename( $location ),
'result' => file_exists( $location ),
),
),
'tableset' => array(
'quantity' => array(
'value' => count( $tables ),
'result' => (bool) count( $tables ),
),
),
));
}
/**
* Process restore requests
*/
public function json_start_restore() {
check_ajax_referer( 'snapshot-ajax-nonce', 'security' );
if ( ! current_user_can( Snapshot_View_Full_Backup::get()->get_page_role() ) ) {
die; /* Only some users can restore. */
}
if ( ! $this->_is_backup_processing_ready() ) {
die;
}
$data = stripslashes_deep( $_POST );
$archive = ! empty( $data['archive'] ) && is_numeric( $data['archive'] )
? $data['archive']
: false
;
if ( stripos( $data['restore'], 'phar://' ) !== false ) {
throw new \Exception('Potential Phar PHP Object Injection detected.');
}
$restore_path = ! empty( $data['restore'] ) && file_exists( $data['restore'] ) ? $data['restore'] : false;
$credentials = ! empty( $data['credentials'] )
? stripslashes_deep( $data['credentials'] )
: true
;
// Signal intent - starting action.
Snapshot_Helper_Log::start();
if ( ! WP_Filesystem( $credentials ) ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
));
}
if ( empty( $archive ) ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
));
}
if ( empty( $restore_path ) ) {
$restore_path = apply_filters( 'snapshot_home_path', get_home_path() );
}
if ( empty( $restore_path ) || ! file_exists( $restore_path ) ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
));
}
$archive_path = $this->_model->get_backup( $archive );
if ( isset( $data['initial_callback'] ) && $data['initial_callback'] ) {
// If we don't have the full archive path yet, we're still fetching the file.
if ( ! file_exists( $archive_path ) ) {
$error = ( ( ! ! $this->_model->has_errors() ) ) ? true : false;
$error = apply_filters( 'snapshot_manage_backup_init_error_restore', $error );
wp_send_json(array(
'task' => 'fetching',
'action' => 'init',
'errors' => $error,
'status' => false,
));
} else {
$error = apply_filters( 'snapshot_manage_backup_init_error_restore', false );
$initial_response = array(
'task' => 'fetching',
'action' => 'init',
'errors' => $error,
'status' => true,
);
}
}
$restore = Snapshot_Helper_Restore::from( $archive_path );
$rqueues = $restore->get_current_queues();
if ( empty( $rqueues ) ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
));
}
$restore->to( $restore_path );
// If it's the first time coming into this restore processing method, make sure to delete all session residuals.
if ( isset( $data['initial_callback'] ) && $data['initial_callback'] ) {
$post_cleanup = false;
$restore->clear( $post_cleanup );
wp_send_json($initial_response);
}
$task = $restore->is_done()
? 'clearing'
: 'restoring'
;
if ( 'clearing' === $task ) {
$status = $restore->clear();
$process_file['action'] = 'finalize';
$process_file['progress'] = '50';
} else {
$process_file = $restore->process_files();
$status = $process_file['status'];
}
if ( ! $status && $restore->get_copy_warning() ) {
wp_send_json(array(
'task' => 'clearing',
'status' => false,
'action' => $process_file['action'],
));
}
// TODO: this should be handled separately.
if ( 'clearing' === $task ) {
unlink( $archive_path );
}
Snapshot_Model_Full_Remote_Storage::get()->purge_backups_cache();
$response = array(
'task' => $task,
'status' => $status,
'action' => $process_file['action'],
'progress' => $process_file['progress'],
);
/**
* Filter Manage backup restore
*
* @since 3.2.1.2
*
* @param array $response
*/
$response = apply_filters('snapshot_manage_backup_restore', $response );
wp_send_json( $response );
}
/**
* Sends back backup size estimate
*/
public function json_estimate_backup() {
if ( ! $this->_is_backup_processing_ready() ) {
die;
}
$idx = $this->_get_backup_type();
$backup = Snapshot_Helper_Backup::load( $idx );
$total = $backup
? $backup->get_total_steps_estimate()
: 0
;
wp_send_json(array(
'total' => $total,
));
}
public function json_abort_backup_processing() {
$idx = $this->_get_backup_type();
$backup = Snapshot_Helper_Backup::load( $idx );
if ( ! empty( $backup ) ) {
// Let's remove the intermediate files and the session data
$backup->stop_and_remove();
} else {
Snapshot_Helper_Log::error( "Could not lookup backup to abort processing." );
}
delete_site_option( self::OPTIONS_FLAG );
wp_send_json_success();
}
/**
* When a backup file has already been partially uploaded, this endpoint calls Amazon S3 to remove the uploaded parts
*/
public function json_abort_upload() {
check_ajax_referer( 'snapshot-ajax-nonce', 'security' );
$data = stripslashes_deep( $_POST );
$archive = ! empty( $data['archive'] ) && is_numeric( $data['archive'] )
? $data['archive']
: false;
if ( empty( $archive ) ) {
// Scenario - unable to load backup directly (see also Snapshot_Controller_Full->_finish_backup)
// We are creating a new managed backup
// Backup preparation has completed
// Backup upload has started (there has been at least one call to json_finish_backup)
// Since there has been a finish call, post processing has already been done
// Data for the backup needs to be fetched from the session like so:
$session = Snapshot_Helper_Backup::get_session( $this->_get_backup_type() );
$archive = ! empty( $session->data['timestamp'] )
? $session->data['timestamp']
: false;
}
if ( ! $this->_is_backup_processing_ready() || empty( $archive ) ) {
$error = esc_html__( 'Error aborting upload: invalid request' );
Snapshot_Helper_Log::error( $error );
wp_send_json( array( 'error' => $error ) );
die;
}
$file_path = $this->_model->get_backup( $archive );
$status = Snapshot_Model_Full_Remote_Storage::get()->abort_file_upload( $file_path );
if ( $status ) {
// Remove temporary storage since all the previous parts
// should have been deleted at this point
delete_site_option( md5( $file_path ) );
}
wp_send_json( array(
'is_done' => $status,
'error' => $status
? esc_html__( 'Upload has been aborted. You can retry uploading the backup or go back to managed backups listing page.', SNAPSHOT_I18N_DOMAIN )
: esc_html__( 'Failed to abort upload. Please view logs.', SNAPSHOT_I18N_DOMAIN ),
) );
}
public function json_start_upload() {
check_ajax_referer( 'snapshot-ajax-nonce', 'security' );
$data = stripslashes_deep( $_POST );
$archive = ! empty( $data['archive'] ) && is_numeric( $data['archive'] )
? $data['archive']
: false;
if ( ! $this->_is_backup_processing_ready() || empty( $archive ) ) {
$error = esc_html__( 'Error reuploading file: invalid request' );
Snapshot_Helper_Log::error( $error );
wp_send_json( array( 'error' => $error ) );
die;
}
$error_response = array( 'error' => esc_html__( 'Your backup failed to upload to the Hub. This can happen for a number of reasons, we recommend checking the error logs to see if you can uncover the issue, or try resetting your Snapshot API Key to see if that fixes the issue. If you get stuck, please contact our support team for help.', 'snapshot' ) );
if ( ! Snapshot_Model_Full_Remote_Api::get()->connect() ) {
wp_send_json( $error_response );
die;
}
$file_path = $this->_model->get_backup( $archive );
try {
$status = Snapshot_Model_Full_Remote_Storage::get()->send_backup_file( $file_path );
} catch ( Exception $e ) {
$upload = Snapshot_Model_Full_Remote_Storage::get()->get_initialized_upload( $file_path );
$upload->complete();
wp_send_json( $error_response );
die;
}
$upload = new Snapshot_Model_Transfer_Upload( $file_path );
$file_parts = $upload->get_parts();
$completed = 0;
foreach ( $file_parts as $file_part ) {
if ( $file_part->is_done() ) {
$completed ++;
}
}
wp_send_json( array(
'is_done' => $status,
'completed' => $completed,
'total' => count( $file_parts ),
) );
}
/**
* Backup start JSON handler
*
* First in the cascade of requests actually performing the backup
*/
public function json_start_backup() {
if ( ! $this->_is_backup_processing_ready() ) {
die;
}
// Signal intent - starting action.
Snapshot_Helper_Log::start();
$idx = $this->_get_backup_type();
$this->_start_backup( $idx );
update_site_option( self::OPTIONS_FLAG, true );
wp_send_json(array(
'id' => $idx,
));
}
/**
* Backup processing JSON handler
*
* This will get called repeatedly, as long as the backup isn't ready
*/
public function json_process_backup() {
check_ajax_referer( 'snapshot-ajax-nonce', 'security' );
$data = stripslashes_deep( $_POST );
$idx = ! empty( $data['idx'] ) ? $data['idx'] : $this->_get_backup_type();
$status = false;
try {
$status = $this->_process_backup( $idx );
} catch (Snapshot_Exception $e) {
$key = $e->get_error_key();
$msg = Snapshot_Model_Full_Error::get_human_description( $key );
Snapshot_Helper_Log::error( "Error processing manual backup: {$key}" );
Snapshot_Helper_Log::note( $msg );
delete_site_option( self::OPTIONS_FLAG );
/**
* Automatic backup processing encountered too many errors
*
* @since 3.0-beta-12
*
* @param string Action type indicator (process or finish).
* @param string $key Error message key.
* @param string $msg Human-friendly message description.
*/
do_action( $this->get_filter( 'ajax_error_stop' ), 'process', $key, $msg ); // Notify anyone interested.
die( esc_js( $msg ) );
}
wp_send_json(array(
'done' => $status,
));
}
/**
* Backup end JSON handler
*
* The last in the cascade of requests actually performing the backup
*/
public function json_finish_backup() {
check_ajax_referer( 'snapshot-ajax-nonce', 'security' );
$data = stripslashes_deep( $_POST );
$idx = ! empty( $data['idx'] ) ? $data['idx'] : $this->_get_backup_type();
try {
$status = $this->_finish_backup( $idx );
} catch (Snapshot_Exception $e) {
$key = $e->get_error_key();
$msg = Snapshot_Model_Full_Error::get_human_description( $key );
Snapshot_Helper_Log::error( "Error finalizing manual backup: {$key}" );
Snapshot_Helper_Log::note( $msg );
delete_site_option( self::OPTIONS_FLAG );
/**
* Automatic backup processing encountered too many errors
*
* @since 3.0-beta-12
*
* @param string Action type indicator (process or finish).
* @param string $key Error message key.
* @param string $msg Human-friendly message description.
*/
do_action( $this->get_filter( 'ajax_error_stop' ), 'finish', $key, $msg ); // Notify anyone interested.
die( esc_js( $msg ) );
}
delete_site_option( self::OPTIONS_FLAG );
if ( ! $status && ! $this->_model->has_api_info() ) {
$response = array(
'status' => true,
'msg' => __( 'Could not communicate with remote service', SNAPSHOT_I18N_DOMAIN ),
);
} else {
$response = array(
'status' => $status,
);
}
wp_send_json( $response );
}
}