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authorCharles Cabergs <me@cacharle.xyz>2020-07-27 10:05:23 +0200
committerCharles Cabergs <me@cacharle.xyz>2020-07-27 10:05:23 +0200
commit5bf66662a9bdd62c5bccab15e607cd95cfb8fcab (patch)
tree39a1a4629749056191c05dfd899f931701b7acf3 /srcs/wordpress/wp-includes/class-wp-http-encoding.php
parent5afd237bbd22028b85532b8c0b3fcead49a00764 (diff)
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Removed wordpress and phpmyadmin, my server doesn't handle it well and it brings shame on my famillyHEADmaster
Diffstat (limited to 'srcs/wordpress/wp-includes/class-wp-http-encoding.php')
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-<?php
-/**
- * HTTP API: WP_Http_Encoding class
- *
- * @package WordPress
- * @subpackage HTTP
- * @since 4.4.0
- */
-
-/**
- * Core class used to implement deflate and gzip transfer encoding support for HTTP requests.
- *
- * Includes RFC 1950, RFC 1951, and RFC 1952.
- *
- * @since 2.8.0
- */
-class WP_Http_Encoding {
-
- /**
- * Compress raw string using the deflate format.
- *
- * Supports the RFC 1951 standard.
- *
- * @since 2.8.0
- *
- * @param string $raw String to compress.
- * @param int $level Optional, default is 9. Compression level, 9 is highest.
- * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
- * @return string|false False on failure.
- */
- public static function compress( $raw, $level = 9, $supports = null ) {
- return gzdeflate( $raw, $level );
- }
-
- /**
- * Decompression of deflated string.
- *
- * Will attempt to decompress using the RFC 1950 standard, and if that fails
- * then the RFC 1951 standard deflate will be attempted. Finally, the RFC
- * 1952 standard gzip decode will be attempted. If all fail, then the
- * original compressed string will be returned.
- *
- * @since 2.8.0
- *
- * @param string $compressed String to decompress.
- * @param int $length The optional length of the compressed data.
- * @return string|bool False on failure.
- */
- public static function decompress( $compressed, $length = null ) {
-
- if ( empty( $compressed ) ) {
- return $compressed;
- }
-
- $decompressed = @gzinflate( $compressed );
- if ( false !== $decompressed ) {
- return $decompressed;
- }
-
- $decompressed = self::compatible_gzinflate( $compressed );
- if ( false !== $decompressed ) {
- return $decompressed;
- }
-
- $decompressed = @gzuncompress( $compressed );
- if ( false !== $decompressed ) {
- return $decompressed;
- }
-
- if ( function_exists( 'gzdecode' ) ) {
- $decompressed = @gzdecode( $compressed );
-
- if ( false !== $decompressed ) {
- return $decompressed;
- }
- }
-
- return $compressed;
- }
-
- /**
- * Decompression of deflated string while staying compatible with the majority of servers.
- *
- * Certain Servers will return deflated data with headers which PHP's gzinflate()
- * function cannot handle out of the box. The following function has been created from
- * various snippets on the gzinflate() PHP documentation.
- *
- * Warning: Magic numbers within. Due to the potential different formats that the compressed
- * data may be returned in, some "magic offsets" are needed to ensure proper decompression
- * takes place. For a simple progmatic way to determine the magic offset in use, see:
- * https://core.trac.wordpress.org/ticket/18273
- *
- * @since 2.8.1
- * @link https://core.trac.wordpress.org/ticket/18273
- * @link https://secure.php.net/manual/en/function.gzinflate.php#70875
- * @link https://secure.php.net/manual/en/function.gzinflate.php#77336
- *
- * @param string $gzData String to decompress.
- * @return string|bool False on failure.
- */
- public static function compatible_gzinflate( $gzData ) {
-
- // Compressed data might contain a full header, if so strip it for gzinflate().
- if ( substr( $gzData, 0, 3 ) == "\x1f\x8b\x08" ) {
- $i = 10;
- $flg = ord( substr( $gzData, 3, 1 ) );
- if ( $flg > 0 ) {
- if ( $flg & 4 ) {
- list($xlen) = unpack( 'v', substr( $gzData, $i, 2 ) );
- $i = $i + 2 + $xlen;
- }
- if ( $flg & 8 ) {
- $i = strpos( $gzData, "\0", $i ) + 1;
- }
- if ( $flg & 16 ) {
- $i = strpos( $gzData, "\0", $i ) + 1;
- }
- if ( $flg & 2 ) {
- $i = $i + 2;
- }
- }
- $decompressed = @gzinflate( substr( $gzData, $i, -8 ) );
- if ( false !== $decompressed ) {
- return $decompressed;
- }
- }
-
- // Compressed data from java.util.zip.Deflater amongst others.
- $decompressed = @gzinflate( substr( $gzData, 2 ) );
- if ( false !== $decompressed ) {
- return $decompressed;
- }
-
- return false;
- }
-
- /**
- * What encoding types to accept and their priority values.
- *
- * @since 2.8.0
- *
- * @param string $url
- * @param array $args
- * @return string Types of encoding to accept.
- */
- public static function accept_encoding( $url, $args ) {
- $type = array();
- $compression_enabled = self::is_available();
-
- if ( ! $args['decompress'] ) { // Decompression specifically disabled.
- $compression_enabled = false;
- } elseif ( $args['stream'] ) { // Disable when streaming to file.
- $compression_enabled = false;
- } elseif ( isset( $args['limit_response_size'] ) ) { // If only partial content is being requested, we won't be able to decompress it.
- $compression_enabled = false;
- }
-
- if ( $compression_enabled ) {
- if ( function_exists( 'gzinflate' ) ) {
- $type[] = 'deflate;q=1.0';
- }
-
- if ( function_exists( 'gzuncompress' ) ) {
- $type[] = 'compress;q=0.5';
- }
-
- if ( function_exists( 'gzdecode' ) ) {
- $type[] = 'gzip;q=0.5';
- }
- }
-
- /**
- * Filters the allowed encoding types.
- *
- * @since 3.6.0
- *
- * @param array $type Encoding types allowed. Accepts 'gzinflate',
- * 'gzuncompress', 'gzdecode'.
- * @param string $url URL of the HTTP request.
- * @param array $args HTTP request arguments.
- */
- $type = apply_filters( 'wp_http_accept_encoding', $type, $url, $args );
-
- return implode( ', ', $type );
- }
-
- /**
- * What encoding the content used when it was compressed to send in the headers.
- *
- * @since 2.8.0
- *
- * @return string Content-Encoding string to send in the header.
- */
- public static function content_encoding() {
- return 'deflate';
- }
-
- /**
- * Whether the content be decoded based on the headers.
- *
- * @since 2.8.0
- *
- * @param array|string $headers All of the available headers.
- * @return bool
- */
- public static function should_decode( $headers ) {
- if ( is_array( $headers ) ) {
- if ( array_key_exists( 'content-encoding', $headers ) && ! empty( $headers['content-encoding'] ) ) {
- return true;
- }
- } elseif ( is_string( $headers ) ) {
- return ( stripos( $headers, 'content-encoding:' ) !== false );
- }
-
- return false;
- }
-
- /**
- * Whether decompression and compression are supported by the PHP version.
- *
- * Each function is tested instead of checking for the zlib extension, to
- * ensure that the functions all exist in the PHP version and aren't
- * disabled.
- *
- * @since 2.8.0
- *
- * @return bool
- */
- public static function is_available() {
- return ( function_exists( 'gzuncompress' ) || function_exists( 'gzdeflate' ) || function_exists( 'gzinflate' ) );
- }
-}