231 lines
		
	
	
		
			6.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			231 lines
		
	
	
		
			6.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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namespace W3TC;
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/**
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 * Rules generation for OpenLiteSpeed
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 */
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class BrowserCache_Environment_LiteSpeed {
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	private $c;
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	public function __construct( $config ) {
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		$this->c = $config;
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	}
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	public function get_required_rules( $mime_types ) {
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		$rewrite_rules = array();
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		$rewrite_rules[] = array(
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			'filename' => Util_Rule::get_litespeed_rules_path(),
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			'content' => $this->generate( $mime_types )
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		);
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		if ( $this->c->get_boolean( 'browsercache.rewrite' ) ||
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				$this->c->get_boolean( 'browsercache.no404wp' ) ) {
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			$g = new BrowserCache_Environment_Apache( $this->c );
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			$rewrite_rules[] = array(
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				'filename' => Util_Rule::get_apache_rules_path(),
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				'content' =>
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					W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE . "\n" .
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					$g->rules_rewrite() .
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					$g->rules_no404wp( $mime_types ) .
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					W3TC_MARKER_END_BROWSERCACHE_CACHE . "\n"
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			);
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		}
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		return $rewrite_rules;
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	}
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	/**
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	 * Returns cache rules
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	 */
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	public function generate( $mime_types, $cdnftp = false ) {
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		$cssjs_types = $mime_types['cssjs'];
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		$cssjs_types = array_unique( $cssjs_types );
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		$html_types = $mime_types['html'];
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		$other_types = $mime_types['other'];
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		$other_compression_types = $mime_types['other_compression'];
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		$rules = '';
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		$rules .= W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE . "\n";
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		$this->generate_section( $rules, $mime_types['cssjs'], 'cssjs' );
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		$this->generate_section( $rules, $mime_types['html'], 'html' );
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		$this->generate_section( $rules, $mime_types['other'], 'other' );
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		if ( $this->c->get_boolean( 'browsercache.rewrite' ) ) {
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			$core = Dispatcher::component( 'BrowserCache_Core' );
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			$extensions = $core->get_replace_extensions( $this->c );
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			$rules .= "<IfModule mod_rewrite.c>\n";
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			$rules .= "    RewriteCond %{REQUEST_FILENAME} !-f\n";
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			$rules .= '    RewriteRule ^(.+)\.(x[0-9]{5})\.(' .
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				implode( '|', $extensions ) . ')$ $1.$3 [L]' . "\n";
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			$rules .= "</IfModule>\n";
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		}
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		$rules .= W3TC_MARKER_END_BROWSERCACHE_CACHE . "\n";
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		return $rules;
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	}
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	/**
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	 * Adds cache rules for type to &$rules.
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	 *
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	 * @param string $rules      Rules.
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	 * @param array  $mime_types MIME types.
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	 * @param string $section    Section.
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	 * @return void
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	 */
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	private function generate_section( &$rules, $mime_types, $section ) {
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		$expires       = $this->c->get_boolean( 'browsercache.' . $section . '.expires' );
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		$cache_control = $this->c->get_boolean( 'browsercache.' . $section . '.cache.control' );
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		$w3tc          = $this->c->get_boolean( 'browsercache.' . $section . '.w3tc' );
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		$last_modified = $this->c->get_boolean( 'browsercache.' . $section . '.last_modified' );
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		if ( $expires || $cache_control || $w3tc || ! $last_modified ) {
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			$mime_types2 = apply_filters(
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				'w3tc_browsercache_rules_section_extensions',
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				$mime_types,
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				$this->c,
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				$section
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			);
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			$extensions  = array_keys( $mime_types2 );
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			// Remove ext from filesmatch if its the same as permalink extension.
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			$pext = strtolower( pathinfo( get_option( 'permalink_structure' ), PATHINFO_EXTENSION ) );
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			if ( $pext ) {
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				$extensions = Util_Rule::remove_extension_from_list( $extensions, $pext );
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			}
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			$extensions_string = implode( '|', $extensions );
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			$section_rules = self::section_rules( $section );
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			$section_rules = apply_filters( 'w3tc_browsercache_rules_section',
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				$section_rules, $this->c, $section );
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			$context_rules = $section_rules['other'];
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			if ( !empty( $section_rules['add_header'] ) ) {
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				$context_rules[] = "    extraHeaders <<<END_extraHeaders";
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				foreach ( $section_rules['add_header'] as $line ) {
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					$context_rules[] = '        ' . $line;
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				}
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				$context_rules[] = "    END_extraHeaders";
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			}
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			if ( $section_rules['rewrite'] ) {
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				$context_rules[] = '    rewrite {';
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				$context_rules[] = '        RewriteFile .htaccess';
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				$context_rules[] = '    }';
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			}
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			$rules .= "context exp:^.*($extensions_string)\$ {\n";
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			$rules .= "    location \$DOC_ROOT/\$0\n";
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			$rules .= "    allowBrowse 1\n";
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			$rules .= implode( "\n", $context_rules ) . "\n";
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			$rules .= "}\n";
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		}
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	}
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	/**
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	 * Returns directives plugin applies to files of specific section
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	 * Without location
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	 */
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	public function section_rules( $section ) {
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		$rules = [];
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		$expires = $this->c->get_boolean( "browsercache.$section.expires" );
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		$lifetime = $this->c->get_integer( "browsercache.$section.lifetime" );
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		if ( $expires ) {
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			$rules[] = '    enableExpires 1';
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			$rules[] = "    expiresDefault A$lifetime";
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			$rules[] = "    ExpiresByType */*=A$lifetime";
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		} else {
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			$rules[] = '    enableExpires 0';
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		}
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		/*
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		if ( $this->c->get_boolean( "browsercache.$section.last_modified" ) )
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		lastmod support not implemented
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		*/
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		$add_header_rules = array();
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		if ( $this->c->get_boolean( "browsercache.$section.cache.control" ) ) {
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			$cache_policy = $this->c->get_string( "browsercache.$section.cache.policy" );
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			switch ( $cache_policy ) {
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			case 'cache':
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				$add_header_rules[] = 'unset Pragma';
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				$add_header_rules[] = 'set Pragma public';
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				$add_header_rules[] = 'set Cache-Control public';
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				break;
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			case 'cache_public_maxage':
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				$add_header_rules[] = 'unset Pragma';
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				$add_header_rules[] = 'set Pragma public';
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				break;
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			case 'cache_validation':
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				$add_header_rules[] = 'unset Pragma';
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				$add_header_rules[] = 'set Pragma public';
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				$add_header_rules[] = 'unset Cache-Control';
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				$add_header_rules[] = 'set Cache-Control "public, must-revalidate, proxy-revalidate"';
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				break;
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			case 'cache_noproxy':
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				$add_header_rules[] = 'unset Pragma';
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				$add_header_rules[] = 'set Pragma public';
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				$add_header_rules[] = 'unset Cache-Control';
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				$add_header_rules[] = 'set Cache-Control "private, must-revalidate"';
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				break;
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			case 'cache_maxage':
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				$add_header_rules[] = 'unset Pragma';
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				$add_header_rules[] = 'set Pragma "public"';
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				$add_header_rules[] = 'unset Cache-Control';
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				if ( $expires ) {
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					$add_header_rules[] = 'set Cache-Control "public, must-revalidate, proxy-revalidate"';
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				} else {
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					$add_header_rules[] = "set Cache-Control \"max-age=$lifetime, public, must-revalidate, proxy-revalidate\"";
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				}
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				break;
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			case 'no_cache':
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				$add_header_rules[] = 'unset Pragma';
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				$add_header_rules[] = 'set Pragma "no-cache";';
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				$add_header_rules[] = 'unset Cache-Control';
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				$add_header_rules[] = 'set Cache-Control "max-age=0, private, no-store, no-cache, must-revalidate"';
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				break;
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			}
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		}
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		// need htaccess for rewrites
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		$rewrite = $this->c->get_boolean( 'browsercache.rewrite' );
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		return array( 'add_header' => $add_header_rules, 'other' => $rules, 'rewrite' => $rewrite );
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	}
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	public function w3tc_cdn_rules_section( $section_rules ) {
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		$section_rules_bc = $this->section_rules( 'other' );
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		$section_rules['other'] = array_merge( $section_rules['other'], $section_rules_bc['other'] );
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		$section_rules['add_header'] = array_merge(
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			$section_rules['add_header'], $section_rules_bc['add_header'] );
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		return $section_rules;
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	}
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}
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