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<?php
/**
* Gzip compression module.
*
* @package Hummingbird
*/
namespace Hummingbird\Core\Modules;
use Hummingbird\Core\Module_Server;
use Hummingbird\Core\Utils;
use SimplePie_File;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Class GZip
*/
class Gzip extends Module_Server {
/**
* Module slug.
*
* @var string
*/
protected $transient_slug = 'gzip';
/**
* Module status.
*
* @var array $status
*/
public $status;
/**
* Analyze data. Overwrites parent method.
*
* @param bool $check_api If set to true, the api can be checked.
*
* @return array
*/
public function analyze_data( $check_api = false ) {
$files = array(
'HTML' => add_query_arg( 'avoid-minify', 'true', get_home_url() ),
'JavaScript' => WPHB_DIR_URL . 'core/modules/dummy/dummy-js.js',
'CSS' => WPHB_DIR_URL . 'core/modules/dummy/dummy-style.css',
);
$results = array();
$try_api = false;
foreach ( $files as $type => $file ) {
// We don't use wp_remote, getting the content-encoding is not working.
if ( ! class_exists( 'SimplePie' ) ) {
require_once ABSPATH . WPINC . '/class-simplepie.php';
}
$headers = array(
'Content-Type' => 'text/plain',
);
$useragent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36';
$result = new SimplePie_File( $file, 10, 5, $headers, $useragent );
$headers = $result->headers;
$results[ $type ] = false;
if ( ! empty( $headers ) && 401 === $result->status_code ) {
$results[ $type ] = 'privacy';
} elseif ( ! empty( $headers ) && isset( $headers['content-encoding'] ) && 'gzip' === $headers['content-encoding'] ) {
$results[ $type ] = true;
} else {
$try_api = true;
}
}
// Will only trigger on 're-check status' button click and there are some false values.
if ( $try_api && $check_api ) {
// Get the API results.
$api = Utils::get_api();
$api_results = $api->performance->check_gzip();
// This will prevent errors on local hosts and when API is not reachable.
if ( ! is_wp_error( $api_results ) ) {
$api_results = get_object_vars( $api_results );
foreach ( $files as $type => $file ) {
// If already true, do not overwrite with check.
if ( true === $results[ $type ] ) {
continue;
}
$index = strtolower( $type );
if ( ! isset( $api_results[ $index ]->response_error )
&& ( isset( $api_results[ $index ] ) && true === $api_results[ $index ] )
) {
$results[ $type ] = true;
}
}
}
}
return $results;
}
/**
* Code to use on Nginx servers.
*
* @return string
*/
public function get_nginx_code() {
return '# Enable Gzip compression
gzip on;
# Compression level (1-9)
gzip_comp_level 5;
# Don\'t compress anything under 256 bytes
gzip_min_length 256;
# Compress output of these MIME-types
gzip_types
application/atom+xml
application/javascript
application/json
application/rss+xml
application/vnd.ms-fontobject
application/x-font-ttf
application/x-font-opentype
application/x-font-truetype
application/x-javascript
application/x-web-app-manifest+json
application/xhtml+xml
application/xml
font/eot
font/opentype
font/otf
image/svg+xml
image/x-icon
image/vnd.microsoft.icon
text/css
text/plain
text/javascript
text/x-component;
# Disable gzip for bad browsers
gzip_disable "MSIE [1-6]\.(?!.*SV1)";';
}
/**
* Code to use on Apache servers.
*
* @return string
*/
public function get_apache_code() {
return '<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s*,?\s*)+|[X~-]{4,13}$ HAVE_Accept-Encoding
RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
</IfModule>
</IfModule>
<IfModule mod_filter.c>
AddOutputFilterByType DEFLATE "application/atom+xml" \
"application/javascript" \
"application/json" \
"application/ld+json" \
"application/manifest+json" \
"application/rdf+xml" \
"application/rss+xml" \
"application/schema+json" \
"application/vnd.geo+json" \
"application/vnd.ms-fontobject" \
"application/x-font-ttf" \
"application/x-font-opentype" \
"application/x-font-truetype" \
"application/x-javascript" \
"application/x-web-app-manifest+json" \
"application/xhtml+xml" \
"application/xml" \
"font/eot" \
"font/opentype" \
"font/otf" \
"image/bmp" \
"image/svg+xml" \
"image/vnd.microsoft.icon" \
"image/x-icon" \
"text/cache-manifest" \
"text/css" \
"text/html" \
"text/javascript" \
"text/plain" \
"text/vcard" \
"text/vnd.rim.location.xloc" \
"text/vtt" \
"text/x-component" \
"text/x-cross-domain-policy" \
"text/xml"
</IfModule>
<IfModule mod_mime.c>
AddEncoding gzip svgz
</IfModule>
</IfModule>';
}
/**
* IIS code.
*
* @return string
*/
public function get_iis_code() {
return '';
}
/**
* IIS 7 code.
*
* @return string
*/
public function get_iis_7_code() {
return '';
}
}
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