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<?php
namespace W3TC;
class Generic_Environment {
/**
* Fixes environment
*
* @param Config $config
* @param bool $force_all_checks
* @throws Util_Environment_Exceptions
*/
function fix_on_wpadmin_request( $config, $force_all_checks ) {
$exs = new Util_Environment_Exceptions();
// create add-ins
$this->create_required_files( $config, $exs );
// create folders
$this->create_required_folders( $exs );
$this->add_index_to_folders();
if ( count( $exs->exceptions() ) <= 0 ) {
// save actual version of config is it's built on legacy configs
$f = ConfigUtil::is_item_exists( 0, false );
$f2 = file_exists( Config::util_config_filename_legacy_v2( 0, false ) );
$c = Dispatcher::config_master();
if ( ( $f || $f2 ) && $c->is_compiled() ) {
$c->save();
$f = ConfigUtil::is_item_exists( 0, false );
}
if ( $f && $f2 )
@unlink( Config::util_config_filename_legacy_v2( 0, false ) );
}
if ( count( $exs->exceptions() ) > 0 )
throw $exs;
}
/**
* Fixes environment once event occurs
*
* @throws Util_Environment_Exceptions
*/
public function fix_on_event( $config, $event, $old_config = null ) {
}
/**
* Fixes environment after plugin deactivation
*
* @throws Util_Environment_Exceptions
* @return array
*/
public function fix_after_deactivation() {
$exs = new Util_Environment_Exceptions();
$this->delete_required_files( $exs );
if ( count( $exs->exceptions() ) > 0 )
throw $exs;
}
/**
* Returns required rules for module
*
* @var Config $config
* @return array
*/
function get_required_rules( $config ) {
return null;
}
/**
* Checks if addins in wp-content is available and correct version.
*
* @param unknown $config
* @param Util_Environment_Exceptions $exs
*/
private function create_required_files( $config, $exs ) {
$src = W3TC_INSTALL_FILE_ADVANCED_CACHE;
$dst = W3TC_ADDIN_FILE_ADVANCED_CACHE;
if ( $this->advanced_cache_installed() ) {
if ( $this->is_advanced_cache_add_in() ) {
$script_data = @file_get_contents( $dst );
if ( $script_data == @file_get_contents( $src ) )
return;
} else if ( get_transient( 'w3tc_remove_add_in_pgcache' ) == 'yes' ) {
// user already manually asked to remove another plugin's add in,
// we should try to apply ours
// (in case of missing permissions deletion could fail)
} else if ( !$this->advanced_cache_check_old_add_in() ) {
$remove_url = Util_Ui::admin_url( 'admin.php?page=w3tc_dashboard&w3tc_default_remove_add_in=pgcache' );
$exs->push( new Util_WpFile_FilesystemOperationException(
sprintf( __( 'The Page Cache add-in file advanced-cache.php is not a W3 Total Cache drop-in.
It should be removed. %s', 'w3-total-cache' ),
Util_Ui::button_link( __( 'Yes, remove it for me', 'w3-total-cache' ), wp_nonce_url( $remove_url, 'w3tc' ) ) ) ) );
return;
}
}
try {
Util_WpFile::copy_file( $src, $dst );
} catch ( Util_WpFile_FilesystemOperationException $ex ) {
$exs->push( $ex );
}
}
/**
* Checks if addins in wp-content are available and deletes them.
*
* @param Util_Environment_Exceptions $exs
*/
private function delete_required_files( $exs ) {
try {
if ( $this->is_advanced_cache_add_in() )
Util_WpFile::delete_file( W3TC_ADDIN_FILE_ADVANCED_CACHE );
} catch ( Util_WpFile_FilesystemOperationException $ex ) {
$exs->push( $ex );
}
}
/**
* Checks if addins in wp-content is available and correct version.
*
* @param Util_Environment_Exceptions $exs
*/
private function create_required_folders( $exs ) {
// folders that we create if not exists
$directories = array(
W3TC_CACHE_DIR
);
if ( !(defined( 'W3TC_CONFIG_DATABASE' ) && W3TC_CONFIG_DATABASE ) ) {
$directories[] = W3TC_CONFIG_DIR;
}
foreach ( $directories as $directory ) {
try{
Util_WpFile::create_writeable_folder( $directory, WP_CONTENT_DIR );
} catch ( Util_WpFile_FilesystemOperationException $ex ) {
$exs->push( $ex );
}
}
// folders that we delete if exists and not writeable
$directories = array(
W3TC_CACHE_TMP_DIR,
W3TC_CACHE_BLOGMAP_FILENAME,
W3TC_CACHE_DIR . '/object',
W3TC_CACHE_DIR . '/db'
);
foreach ( $directories as $directory ) {
try{
if ( file_exists( $directory ) && !is_writeable( $directory ) )
Util_WpFile::delete_folder( $directory );
} catch ( Util_WpFile_FilesystemRmdirException $ex ) {
$exs->push( $ex );
}
}
}
/**
* Adds index files
*/
private function add_index_to_folders() {
$directories = array(
W3TC_CACHE_DIR,
W3TC_CONFIG_DIR );
$add_files = array();
foreach ( $directories as $dir ) {
if ( is_dir( $dir ) && !file_exists( $dir . '/index.html' ) )
@file_put_contents( $dir . '/index.html', '' );
}
}
/**
* Returns true if advanced-cache.php is installed
*
* @return boolean
*/
public function advanced_cache_installed() {
return file_exists( W3TC_ADDIN_FILE_ADVANCED_CACHE );
}
/**
* Returns true if advanced-cache.php is old version.
*
* @return boolean
*/
public function advanced_cache_check_old_add_in() {
return ( ( $script_data = @file_get_contents( W3TC_ADDIN_FILE_ADVANCED_CACHE ) )
&& strstr( $script_data, 'w3_instance' ) !== false );
}
/**
* Checks if advanced-cache.php exists
*
* @return boolean
*/
public function is_advanced_cache_add_in() {
return ( ( $script_data = @file_get_contents( W3TC_ADDIN_FILE_ADVANCED_CACHE ) )
&& strstr( $script_data, 'PgCache_ContentGrabber' ) !== false );
}
}