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<?php
namespace W3TC;
define( 'W3TC_MARKER_BEGIN_FEEDBURNER', '# BEGIN W3TC FeedBurner' );
define( 'W3TC_MARKER_END_FEEDBURNER', '# END W3TC FeedBurner' );
/**
* adds rules when needed
*/
class Extension_FeedBurner_Environment {
/**
* Fixes environment in each wp-admin request
*
* @param Config $config
* @param bool $force_all_checks
*
* @throws Util_Environment_Exceptions
*/
static public function fix_on_wpadmin_request( $config, $force_all_checks ) {
$exs = new Util_Environment_Exceptions();
if ( $config->get_boolean( 'config.check' ) || $force_all_checks ) {
$need_rules =
$config->is_extension_active( 'feedburner' ) &&
$config->is_extension_active( 'cloudflare' );
if ( $need_rules ) {
self::rules_add( $config, $exs );
} else {
self::rules_remove( $exs );
}
}
if ( count( $exs->exceptions() ) > 0 )
throw $exs;
}
static public function deactivate_extension() {
$exs = new Util_Environment_Exceptions();
self::rules_remove( $exs );
}
/**
* Fixes environment after plugin deactivation
*
* @throws Util_Environment_Exceptions
*/
static public function fix_after_deactivation() {
$exs = new Util_Environment_Exceptions();
self::rules_remove( $exs );
if ( count( $exs->exceptions() ) > 0 )
throw $exs;
}
/**
* Returns required rules for module
*
* @param Config $config
* @return array
*/
static public function get_required_rules( $rewrite_rules, $config ) {
if ( !$config->get_boolean( 'pgcache.enabled' ) ||
$config->get_string( 'pgcache.engine' ) != 'file_generic' )
return $rewrite_rules;
$pgcache_rules_core_path = Util_Rule::get_pgcache_rules_core_path();
$rewrite_rules[] = array(
'filename' => $pgcache_rules_core_path,
'content' => self::rules_generate( $config ),
'priority' => 1000
);
return $rewrite_rules;
}
/*
* rules modification
*/
/**
* Writes directives to WP .htaccess
*
* @param Config $config
* @param Util_Environment_Exceptions $exs
* @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
*/
static private function rules_add( $config, $exs ) {
return Util_Rule::add_rules( $exs,
Util_Rule::get_pgcache_rules_core_path(),
self::rules_generate( $config ),
W3TC_MARKER_BEGIN_FEEDBURNER,
W3TC_MARKER_END_FEEDBURNER,
array(
W3TC_MARKER_BEGIN_WORDPRESS => 0,
W3TC_MARKER_END_PGCACHE_CORE =>
strlen( W3TC_MARKER_END_PGCACHE_CORE ) + 1
)
);
}
/**
* Removes Page Cache core directives
*
* @param Util_Environment_Exceptions $exs
* @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
*/
static private function rules_remove( $exs ) {
Util_Rule::remove_rules( $exs, Util_Rule::get_pgcache_rules_core_path(),
W3TC_MARKER_BEGIN_FEEDBURNER,
W3TC_MARKER_END_FEEDBURNER
);
}
/**
* Generates rules for WP dir
*
* @param Config $config
* @return string
*/
static private function rules_generate( $config ) {
switch ( true ) {
case Util_Environment::is_apache():
case Util_Environment::is_litespeed():
return self::rules_generate_apache( $config );
case Util_Environment::is_nginx():
return self::rules_generate_nginx( $config );
}
return '';
}
/**
* Generates rules for WP dir
*
* @param Config $config
* @return string
*/
static private function rules_generate_apache( $config ) {
$rewrite_base = Util_Environment::network_home_url_uri();
$a = Util_Environment::wp_upload_dir();
$parse_url = @parse_url( $a['baseurl'] );
if ( empty( $parse_url['path'] ) )
return '';
$uploads_path = $parse_url['path'];
// cut off rewrite base since its already specified by rules
if ( substr( $uploads_path, 0, strlen( $rewrite_base ) ) == $rewrite_base )
$uploads_path_nobase = substr( $uploads_path, strlen( $rewrite_base ) );
else
$uploads_path_nobase = $uploads_path;
$rules = W3TC_MARKER_BEGIN_FEEDBURNER . "\n";
$rules .= "<IfModule mod_rewrite.c>\n";
$rules .= " RewriteCond %{HTTP_USER_AGENT} FeedBurner\n";
$rules .= " RewriteRule ^$uploads_path_nobase/([0-9]+)/([0-9]+)/hotlink-ok/(.*)$ $uploads_path/$1/$2/$3 [L]\n";
$rules .= "</IfModule>\n";
$rules .= W3TC_MARKER_END_FEEDBURNER . "\n";
return $rules;
}
/**
* Generates rules for WP dir
*
* @param Config $config
* @return string
*/
static private function rules_generate_nginx( $config ) {
$a = Util_Environment::wp_upload_dir();
$parse_url = @parse_url( $a['baseurl'] );
if ( empty( $parse_url['path'] ) )
return '';
$uploads_path = $parse_url['path'];
$rules = W3TC_MARKER_BEGIN_FEEDBURNER . "\n";
$rules .= "if (\$http_user_agent ~* \"(FeedBurner)\") {\n";
$rules .= " rewrite ^$uploads_path/([0-9]+)/([0-9]+)/hotlink-ok/(.*)$ $uploads_path/$1/$2/$3 last;\n";
$rules .= "}\n";
$rules .= W3TC_MARKER_END_FEEDBURNER . "\n";
return $rules;
}
}