2023-10-22 22:21:44 +00:00
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<?php
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namespace W3TC;
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/**
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* W3 PgCache plugin - administrative interface
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*/
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/**
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* class DbCache_Environment
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*/
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class DbCache_Environment {
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/**
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* Fixes environment in each wp-admin request
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*
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* @param Config $config
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* @param bool $force_all_checks
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*
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* @throws Util_Environment_Exceptions
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*/
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public function fix_on_wpadmin_request( $config, $force_all_checks ) {
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$exs = new Util_Environment_Exceptions();
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try {
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if ( $config->get_boolean( 'dbcache.enabled' ) ||
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2023-12-08 23:23:36 +00:00
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Util_Environment::is_dbcluster( $config ) ) {
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2023-10-22 22:21:44 +00:00
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$this->create_addin();
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} else {
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$this->delete_addin();
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}
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} catch ( Util_WpFile_FilesystemOperationException $ex ) {
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$exs->push( $ex );
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}
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if ( count( $exs->exceptions() ) > 0 )
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throw $exs;
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}
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/**
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* Fixes environment once event occurs
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*
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* @throws Util_Environment_Exceptions
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*/
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public function fix_on_event( $config, $event, $old_config = null ) {
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if ( $config->get_boolean( 'dbcache.enabled' ) &&
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$config->get_string( 'dbcache.engine' ) == 'file' ) {
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if ( !wp_next_scheduled( 'w3_dbcache_cleanup' ) ) {
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wp_schedule_event( time(),
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'w3_dbcache_cleanup', 'w3_dbcache_cleanup' );
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}
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} else {
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$this->unschedule();
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}
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}
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/**
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* Fixes environment after plugin deactivation
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*
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* @throws Util_Environment_Exceptions
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* @return array
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*/
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public function fix_after_deactivation() {
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$exs = new Util_Environment_Exceptions();
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try {
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$this->delete_addin();
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} catch ( Util_WpFile_FilesystemOperationException $ex ) {
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$exs->push( $ex );
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}
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$this->unschedule();
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if ( count( $exs->exceptions() ) > 0 )
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throw $exs;
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}
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/**
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* Returns required rules for module
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*
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* @var Config $config
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* @return array
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*/
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function get_required_rules( $config ) {
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return null;
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}
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/**
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* scheduling stuff
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*/
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private function unschedule() {
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if ( wp_next_scheduled( 'w3_dbcache_cleanup' ) ) {
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wp_clear_scheduled_hook( 'w3_dbcache_cleanup' );
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}
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}
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/**
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* Creates add-in
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*
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* @throws Util_WpFile_FilesystemOperationException
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*/
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private function create_addin() {
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$src = W3TC_INSTALL_FILE_DB;
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$dst = W3TC_ADDIN_FILE_DB;
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if ( $this->db_installed() ) {
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if ( $this->is_dbcache_add_in() ) {
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$script_data = @file_get_contents( $dst );
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if ( $script_data == @file_get_contents( $src ) )
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return;
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} else if ( get_transient( 'w3tc_remove_add_in_dbcache' ) == 'yes' ) {
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// user already manually asked to remove another plugin's add in,
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// we should try to apply ours
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// (in case of missing permissions deletion could fail)
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} else if ( !$this->db_check_old_add_in() ) {
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$page_val = Util_Request::get_string( 'page' );
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if ( isset( $page_val ) ) {
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$url = 'admin.php?page=' . $page_val . '&';
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} else {
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$url = basename( Util_Environment::remove_query_all( isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '' ) ) . '?page=w3tc_dashboard&';
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}
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$remove_url = Util_Ui::admin_url( $url . 'w3tc_default_remove_add_in=dbcache' );
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throw new Util_WpFile_FilesystemOperationException(
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sprintf( __( 'The Database add-in file db.php is not a W3 Total Cache drop-in.
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Remove it or disable Database Caching. %s', 'w3-total-cache' ),
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Util_Ui::button_link( __( 'Remove it for me', 'w3-total-cache' ), wp_nonce_url( $remove_url, 'w3tc' ) ) ) );
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}
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}
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Util_WpFile::copy_file( $src, $dst );
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}
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/**
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* Deletes add-in
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*
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* @throws Util_WpFile_FilesystemOperationException
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*/
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private function delete_addin() {
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if ( $this->is_dbcache_add_in() )
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Util_WpFile::delete_file( W3TC_ADDIN_FILE_DB );
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}
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/**
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* Returns true if db.php is installed
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*
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* @return boolean
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*/
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public function db_installed() {
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return file_exists( W3TC_ADDIN_FILE_DB );
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}
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/**
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* Returns true if db.php is old version.
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*
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* @return boolean
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*/
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public function db_check_old_add_in() {
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if ( !$this->db_installed() )
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return false;
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return ( ( $script_data = @file_get_contents( W3TC_ADDIN_FILE_DB ) )
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&& strstr( $script_data, 'w3_instance' ) !== false );
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}
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/**
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* Checks if db.php is W3TC drop in
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*
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* @return boolean
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*/
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public function is_dbcache_add_in() {
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if ( !$this->db_installed() )
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return false;
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return ( ( $script_data = @file_get_contents( W3TC_ADDIN_FILE_DB ) )
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&& strstr( $script_data, 'DbCache_Wpdb' ) !== false );
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}
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}
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