晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /proc/self/root/home/stando/www/wp-content/plugins/w3-total-cache/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //proc/self/root/home/stando/www/wp-content/plugins/w3-total-cache/ObjectCache_Environment.php
<?php
namespace W3TC;

/**
 * W3 Object Cache plugin - administrative interface
 */

/**
 * class ObjectCache_Environment
 */
class ObjectCache_Environment {
	/**
	 * Fixes environment in each wp-admin request
	 *
	 * @param Config  $config
	 * @param bool    $force_all_checks
	 *
	 * @throws Util_Environment_Exceptions
	 */
	public function fix_on_wpadmin_request( $config, $force_all_checks ) {
		$exs = new Util_Environment_Exceptions();

		try {
			$addin_required = $config->get_boolean( 'objectcache.enabled' );
			$addin_required = apply_filters( 'w3tc_objectcache_addin_required',
				$addin_required );

			if ( $addin_required )
				$this->create_addin();
			else
				$this->delete_addin();
		} catch ( Util_WpFile_FilesystemOperationException $ex ) {
			$exs->push( $ex );
		}

		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 ) {
		if ( $config->get_boolean( 'objectcache.enabled' ) &&
			$config->get_string( 'objectcache.engine' ) == 'file' ) {
			if ( !wp_next_scheduled( 'w3_objectcache_cleanup' ) ) {
				wp_schedule_event( time(),
					'w3_objectcache_cleanup', 'w3_objectcache_cleanup' );
			}
		} else {
			$this->unschedule();
		}
	}

	/**
	 * Fixes environment after plugin deactivation
	 *
	 * @return array
	 */
	public function fix_after_deactivation() {
		$exs = new Util_Environment_Exceptions();

		try {
			$this->delete_addin();
		} catch ( Util_WpFile_FilesystemOperationException $ex ) {
			$exs->push( $ex );
		}

		$this->unschedule();

		if ( count( $exs->exceptions() ) > 0 )
			throw $exs;
	}

	/**
	 * Returns required rules for module
	 *
	 * @var Config $config
	 * @return array
	 */
	function get_required_rules( $config ) {
		return null;
	}

	/**
	 * scheduling stuff
	 */
	private function unschedule() {
		if ( wp_next_scheduled( 'w3_objectcache_cleanup' ) ) {
			wp_clear_scheduled_hook( 'w3_objectcache_cleanup' );
		}
	}

	/**
	 * Creates add-in
	 *
	 * @throws Util_WpFile_FilesystemOperationException
	 */
	private function create_addin() {
		$src = W3TC_INSTALL_FILE_OBJECT_CACHE;
		$dst = W3TC_ADDIN_FILE_OBJECT_CACHE;

		if ( $this->objectcache_installed() ) {
			if ( $this->is_objectcache_add_in() ) {
				$script_data = @file_get_contents( $dst );
				if ( $script_data == @file_get_contents( $src ) )
					return;
			} else if ( get_transient( 'w3tc_remove_add_in_objectcache' ) == 'yes' ) {
					// user already manually asked to remove another plugin's add in,
					// we should try to apply ours
					// (in case of missing permissions deletion could fail)
				} else if ( !$this->is_objectcache_old_add_in() ) {
					if ( isset( $_GET['page'] ) )
						$url = 'admin.php?page=' . $_GET['page'] . '&amp;';
					else
						$url = basename( Util_Environment::remove_query_all(
								$_SERVER['REQUEST_URI'] ) ) . '?page=w3tc_dashboard&amp;';
					$remove_url = Util_Ui::admin_url( $url .
						'w3tc_default_remove_add_in=objectcache' );

					throw new Util_WpFile_FilesystemOperationException(
						sprintf( __( 'The Object Cache add-in file object-cache.php is not a W3 Total Cache drop-in.
                    Remove it or disable Object Caching. %s', 'w3-total-cache' ),
							Util_Ui::button_link( __( 'Yes, remove it for me', 'w3-total-cache' ), wp_nonce_url( $remove_url, 'w3tc' ) ) ) );
				}
		}

		Util_WpFile::copy_file( $src, $dst );
	}

	/**
	 * Deletes add-in
	 *
	 * @throws Util_WpFile_FilesystemOperationException
	 */
	private function delete_addin() {
		if ( $this->is_objectcache_add_in() )
			Util_WpFile::delete_file( W3TC_ADDIN_FILE_OBJECT_CACHE );
	}

	/**
	 * Returns true if object-cache.php is installed
	 *
	 * @return boolean
	 */
	public function objectcache_installed() {
		return file_exists( W3TC_ADDIN_FILE_OBJECT_CACHE );
	}

	/**
	 * Returns true if object-cache.php is old version.
	 *
	 * @return boolean
	 */
	public function is_objectcache_old_add_in() {
		if ( !$this->objectcache_installed() )
			return false;

		return ( ( $script_data = @file_get_contents( W3TC_ADDIN_FILE_OBJECT_CACHE ) )
			&& ( ( strstr( $script_data, 'W3 Total Cache Object Cache' ) !== false ) ||
				strstr( $script_data, 'w3_instance' ) !== false ) );
	}

	/**
	 * Checks if object-cache.php is latest version
	 *
	 * @return boolean
	 */
	public function is_objectcache_add_in() {
		if ( !$this->objectcache_installed() )
			return false;

		return ( ( $script_data = @file_get_contents( W3TC_ADDIN_FILE_OBJECT_CACHE ) )
			&& strstr( $script_data, '//ObjectCache Version: 1.4' ) !== false );
	}
}

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