/home/arranoyd/rg2solis/wp-content/plugins/autoptimize/classes/autoptimizeUtils.php
<?php
/**
* General helpers.
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
class autoptimizeUtils
{
/**
* Returns true when mbstring is available.
*
* @param bool|null $override Allows overriding the decision.
*
* @return bool
*/
public static function mbstring_available( $override = null )
{
static $available = null;
if ( null === $available ) {
$available = \extension_loaded( 'mbstring' );
}
if ( null !== $override ) {
$available = $override;
}
return $available;
}
/**
* Multibyte-capable strpos() if support is available on the server.
* If not, it falls back to using \strpos().
*
* @param string $haystack Haystack.
* @param string $needle Needle.
* @param int $offset Offset.
* @param string|null $encoding Encoding. Default null.
*
* @return int|false
*/
public static function strpos( $haystack, $needle, $offset = 0, $encoding = null )
{
if ( self::mbstring_available() ) {
return ( null === $encoding ) ? \mb_strpos( $haystack, $needle, $offset ) : \mb_strpos( $haystack, $needle, $offset, $encoding );
} else {
return \strpos( $haystack, $needle, $offset );
}
}
/**
* Attempts to return the number of characters in the given $string if
* mbstring is available. Returns the number of bytes
* (instead of characters) as fallback.
*
* @param string $string String.
* @param string|null $encoding Encoding.
*
* @return int Number of characters or bytes in given $string
* (characters if/when supported, bytes otherwise).
*/
public static function strlen( $string, $encoding = null )
{
if ( self::mbstring_available() ) {
return ( null === $encoding ) ? \mb_strlen( $string ) : \mb_strlen( $string, $encoding );
} else {
return \strlen( $string );
}
}
/**
* Our wrapper around implementations of \substr_replace()
* that attempts to not break things horribly if at all possible.
* Uses mbstring if available, before falling back to regular
* substr_replace() (which works just fine in the majority of cases).
*
* @param string $string String.
* @param string $replacement Replacement.
* @param int $start Start offset.
* @param int|null $length Length.
* @param string|null $encoding Encoding.
*
* @return string
*/
public static function substr_replace( $string, $replacement, $start, $length = null, $encoding = null )
{
if ( self::mbstring_available() ) {
$strlen = self::strlen( $string, $encoding );
if ( $start < 0 ) {
if ( -$start < $strlen ) {
$start = $strlen + $start;
} else {
$start = 0;
}
} elseif ( $start > $strlen ) {
$start = $strlen;
}
if ( null === $length || '' === $length ) {
$start2 = $strlen;
} elseif ( $length < 0 ) {
$start2 = $strlen + $length;
if ( $start2 < $start ) {
$start2 = $start;
}
} else {
$start2 = $start + $length;
}
if ( null === $encoding ) {
$leader = $start ? \mb_substr( $string, 0, $start ) : '';
$trailer = ( $start2 < $strlen ) ? \mb_substr( $string, $start2, null ) : '';
} else {
$leader = $start ? \mb_substr( $string, 0, $start, $encoding ) : '';
$trailer = ( $start2 < $strlen ) ? \mb_substr( $string, $start2, null, $encoding ) : '';
}
return "{$leader}{$replacement}{$trailer}";
}
return ( null === $length ) ? \substr_replace( $string, $replacement, $start ) : \substr_replace( $string, $replacement, $start, $length );
}
/**
* Decides whether this is a "subdirectory site" or not.
*
* @param bool $override Allows overriding the decision when needed.
*
* @return bool
*/
public static function siteurl_not_root( $override = null )
{
static $subdir = null;
if ( null === $subdir ) {
$parts = self::get_ao_wp_site_url_parts();
$subdir = ( isset( $parts['path'] ) && ( '/' !== $parts['path'] ) );
}
if ( null !== $override ) {
$subdir = $override;
}
return $subdir;
}
/**
* Parse AUTOPTIMIZE_WP_SITE_URL into components using \parse_url(), but do
* so only once per request/lifecycle.
*
* @return array
*/
public static function get_ao_wp_site_url_parts()
{
static $parts = array();
if ( empty( $parts ) ) {
$parts = \parse_url( AUTOPTIMIZE_WP_SITE_URL );
}
return $parts;
}
/**
* Modify given $cdn_url to include the site path when needed.
*
* @param string $cdn_url CDN URL to tweak.
* @param bool $force_cache_miss Force a cache miss in order to be able
* to re-run the filter.
*
* @return string
*/
public static function tweak_cdn_url_if_needed( $cdn_url, $force_cache_miss = false )
{
static $results = array();
if ( ! isset( $results[ $cdn_url ] ) || $force_cache_miss ) {
// In order to return unmodified input when there's no need to tweak.
$results[ $cdn_url ] = $cdn_url;
// Behind a default true filter for backcompat, and only for sites
// in a subfolder/subdirectory, but still easily turned off if
// not wanted/needed...
if ( autoptimizeUtils::siteurl_not_root() ) {
$check = apply_filters( 'autoptimize_filter_cdn_magic_path_check', true, $cdn_url );
if ( $check ) {
$site_url_parts = autoptimizeUtils::get_ao_wp_site_url_parts();
$cdn_url_parts = \parse_url( $cdn_url );
$schemeless = self::is_protocol_relative( $cdn_url );
$cdn_url_parts = self::maybe_replace_cdn_path( $site_url_parts, $cdn_url_parts );
if ( false !== $cdn_url_parts ) {
$results[ $cdn_url ] = self::assemble_parsed_url( $cdn_url_parts, $schemeless );
}
}
}
}
return $results[ $cdn_url ];
}
/**
* When siteurl contains a path other than '/' and the CDN URL does not have
* a path or it's path is '/', this will modify the CDN URL's path component
* to match that of the siteurl.
* This is to support "magic" CDN urls that worked that way before v2.4...
*
* @param array $site_url_parts Site URL components array.
* @param array $cdn_url_parts CDN URL components array.
*
* @return array|false
*/
public static function maybe_replace_cdn_path( array $site_url_parts, array $cdn_url_parts )
{
if ( isset( $site_url_parts['path'] ) && '/' !== $site_url_parts['path'] ) {
if ( ! isset( $cdn_url_parts['path'] ) || '/' === $cdn_url_parts['path'] ) {
$cdn_url_parts['path'] = $site_url_parts['path'];
return $cdn_url_parts;
}
}
return false;
}
/**
* Given an array or components returned from \parse_url(), assembles back
* the complete URL.
* If optional
*
* @param array $parsed_url URL components array.
* @param bool $schemeless Whether the assembled URL should be
* protocol-relative (schemeless) or not.
*
* @return string
*/
public static function assemble_parsed_url( array $parsed_url, $schemeless = false )
{
$scheme = isset( $parsed_url['scheme'] ) ? $parsed_url['scheme'] . '://' : '';
if ( $schemeless ) {
$scheme = '//';
}
$host = isset( $parsed_url['host'] ) ? $parsed_url['host'] : '';
$port = isset( $parsed_url['port'] ) ? ':' . $parsed_url['port'] : '';
$user = isset( $parsed_url['user'] ) ? $parsed_url['user'] : '';
$pass = isset( $parsed_url['pass'] ) ? ':' . $parsed_url['pass'] : '';
$pass = ( $user || $pass ) ? "$pass@" : '';
$path = isset( $parsed_url['path'] ) ? $parsed_url['path'] : '';
$query = isset( $parsed_url['query'] ) ? '?' . $parsed_url['query'] : '';
$fragment = isset( $parsed_url['fragment'] ) ? '#' . $parsed_url['fragment'] : '';
return "$scheme$user$pass$host$port$path$query$fragment";
}
/**
* Returns true if given $url is protocol-relative.
*
* @param string $url URL to check.
*
* @return bool
*/
public static function is_protocol_relative( $url )
{
$result = false;
if ( ! empty( $url ) ) {
$result = ( 0 === strpos( $url, '//' ) );
}
return $result;
}
/**
* Canonicalizes the given path regardless of it existing or not.
*
* @param string $path Path to normalize.
*
* @return string
*/
public static function path_canonicalize( $path )
{
$patterns = array(
'~/{2,}~',
'~/(\./)+~',
'~([^/\.]+/(?R)*\.{2,}/)~',
'~\.\./~',
);
$replacements = array(
'/',
'/',
'',
'',
);
return preg_replace( $patterns, $replacements, $path );
}
/**
* Checks to see if 3rd party services are available and stores result in option
*
* TODO This should be two separate methods.
*
* @param string $return_result should we return resulting service status array (default no).
*
* @return null|array Service status or null.
*/
public static function check_service_availability( $return_result = false )
{
$service_availability_resp = wp_remote_get( 'https://misc.optimizingmatters.com/api/autoptimize_service_availablity.json?from=aomain&ver=' . AUTOPTIMIZE_PLUGIN_VERSION );
if ( ! is_wp_error( $service_availability_resp ) ) {
if ( '200' == wp_remote_retrieve_response_code( $service_availability_resp ) ) {
$availabilities = json_decode( wp_remote_retrieve_body( $service_availability_resp ), true );
if ( is_array( $availabilities ) ) {
autoptimizeOptionWrapper::update_option( 'autoptimize_service_availablity', $availabilities );
if ( $return_result ) {
return $availabilities;
}
}
}
}
return null;
}
/**
* Returns true if the string is a valid regex.
*
* @param string $string String, duh.
*
* @return bool
*/
public static function str_is_valid_regex( $string )
{
set_error_handler( function() {}, E_WARNING );
$is_regex = ( false !== preg_match( $string, '' ) );
restore_error_handler();
return $is_regex;
}
/**
* Returns true if a certain WP plugin is active/loaded.
*
* @param string $plugin_file Main plugin file.
*
* @return bool
*/
public static function is_plugin_active( $plugin_file )
{
static $ipa_exists = null;
if ( null === $ipa_exists ) {
if ( ! function_exists( '\is_plugin_active' ) ) {
require_once ABSPATH . 'wp-admin/includes/plugin.php';
}
$ipa_exists = function_exists( '\is_plugin_active' );
}
return $ipa_exists && \is_plugin_active( $plugin_file );
}
/**
* Returns a node without ID attrib for use in noscript tags
*
* @param string $node an html tag.
*
* @return string
*/
public static function remove_id_from_node( $node ) {
if ( strpos( $node, 'id=' ) === false || apply_filters( 'autoptimize_filter_utils_keep_ids', false ) ) {
return $node;
} else {
return preg_replace( '#(.*) id=[\'|"].*[\'|"] (.*)#Um', '$1 $2', $node );
}
}
/**
* Returns true if given $str ends with given $test.
*
* @param string $str String to check.
* @param string $test Ending to match.
*
* @return bool
*/
public static function str_ends_in( $str, $test )
{
// @codingStandardsIgnoreStart
// substr_compare() is bugged on 5.5.11: https://3v4l.org/qGYBH
// return ( 0 === substr_compare( $str, $test, -strlen( $test ) ) );
// @codingStandardsIgnoreEnd
$length = strlen( $test );
return ( substr( $str, -$length, $length ) === $test );
}
}