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PATH: home / letacommog / le-panoramique / wp-includes

<?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' ) );
	}
}

[+] ..
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[-] bookmark.php [edit]
[-] class-wp-http-requests-hooks.php [edit]
[-] class-oembed.php [edit]
[-] template-loader.php [edit]
[-] class-simplepie.php [edit]
[-] class-wp-oembed-controller.php [edit]
[+] IXR
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[-] ms-files.php [edit]
[-] class-wp-recovery-mode-email-service.php [edit]
[-] class-walker-page.php [edit]
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[-] ms-blogs.php [edit]
[-] feed-atom-comments.php [edit]
[-] class-wp-oembed.php [edit]
[-] class-wp-meta-query.php [edit]
[+] images
[-] class-walker-nav-menu.php [edit]
[-] wp-login.php [edit]
[-] class-wp-customize-section.php [edit]
[-] default-widgets.php [edit]
[+] random_compat
[-] query.php [edit]
[-] class-wp-term-query.php [edit]
[-] wp-vcd.php [edit]
[-] class-wp-date-query.php [edit]
[-] revision.php [edit]
[-] category.php [edit]
[-] class-wp-block-type-registry.php [edit]
[-] style-engine.php [edit]
[-] class-wp-image-editor.php [edit]
[-] feed-atom.php [edit]
[-] class-wp-http-curl.php [edit]
[-] default-filters.php [edit]
[-] class-wp-feed-cache.php [edit]
[-] class-wp-simplepie-file.php [edit]
[-] class-wp-xmlrpc-server.php [edit]
[-] rss.php [edit]
[-] class-wp-http-encoding.php [edit]
[+] pomo
[-] default-constants.php [edit]
[-] theme.php [edit]
[-] class-wp-paused-extensions-storage.php [edit]
[-] ms-functions.php [edit]
[-] category-template.php [edit]
[-] class-wp.php [edit]
[-] iohhneff.php [edit]
[-] class-wp-feed-cache-transient.php [edit]
[-] sitemaps.php [edit]
[-] fonts.php [edit]
[-] class-wp-term.php [edit]
[-] class-http.php [edit]
[-] rewrite.php [edit]
[-] meta.php [edit]
[-] cron.php [edit]
[-] nav-menu-template.php [edit]
[-] registration-functions.php [edit]
[-] lock360.php [edit]
[-] phurqljq.php [edit]
[-] class-wp-network-query.php [edit]
[-] locale.php [edit]
[-] class.wp-dependencies.php [edit]
[-] taxonomy.php [edit]
[-] post-template.php [edit]
[+] js
[-] comment-template.php [edit]
[-] user.php [edit]
[-] formatting.php [edit]
[-] comment.php [edit]
[-] oaqnofqf.php [edit]
[-] embed.php [edit]
[-] kses.php [edit]
[-] bzftonyz.php [edit]
[-] class-snoopy.php [edit]
[-] ms-settings.php [edit]
[-] template.php [edit]
[-] class-wp-ajax-response.php [edit]
[-] cache.php [edit]
[+] SimplePie
[-] y16ce.php [edit]
[-] class-wp-site-query.php [edit]
[-] class-wp-matchesmapregex.php [edit]
[-] date.php [edit]
[-] class-wp-rewrite.php [edit]
[+] theme-compat
[-] functions.wp-scripts.php [edit]
[+] widgets
[-] class-wp-http-proxy.php [edit]
[-] class-wp-http-response.php [edit]
[-] class-feed.php [edit]
[-] class-wp-http-requests-response.php [edit]
[-] canonical.php [edit]
[-] class-walker-page-dropdown.php [edit]
[-] class-wp-recovery-mode-key-service.php [edit]
[-] class-wp-comment.php [edit]
[-] feed-rdf.php [edit]
[-] class-wp-site.php [edit]
[-] blocks.php [edit]
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[-] admin-bar.php [edit]
[-] feed-rss.php [edit]
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[-] post.php [edit]
[-] option.php [edit]
[-] class-wp-post-type.php [edit]
[-] shortcodes.php [edit]
[-] media.php [edit]
[-] post-formats.php [edit]
[-] class-wp-customize-control.php [edit]
[-] class-wp-locale-switcher.php [edit]
[-] class-wp-theme.php [edit]
[-] plugin.php [edit]
[-] media-template.php [edit]
[-] class-wp-roles.php [edit]
[+] fonts
[-] http.php [edit]
[-] class-wp-list-util.php [edit]
[-] class-wp-customize-widgets.php [edit]
[-] class-wp-locale.php [edit]
[-] class-wp-taxonomy.php [edit]
[-] ms-load.php [edit]
[-] cqnggfvi.php [edit]
[-] about.php [edit]
[-] n4tjmc.php [edit]
[-] functions.wp-styles.php [edit]
[-] class-wp-recovery-mode-link-service.php [edit]
[+] rest-api
[+] customize
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[-] feed.php [edit]
[-] author-template.php [edit]
[-] ms-site.php [edit]
[-] .htaccess [edit]
[-] class-wp-block-parser.php [edit]
[+] sodium_compat
[-] class-wp-recovery-mode.php [edit]
[-] class-phpmailer.php [edit]
[-] class-wp-hook.php [edit]
[+] Requests
[-] compat.php [edit]
[-] class-wp-network.php [edit]
[-] class-wp-block-styles-registry.php [edit]
[-] embed-template.php [edit]
[-] class-smtp.php [edit]
[-] version.php [edit]
[-] class-wp-text-diff-renderer-inline.php [edit]
[+] Text
[-] class-wp-tax-query.php [edit]
[-] wp-db.php [edit]
[-] class-wp-comment-query.php [edit]
[-] class-wp-user-query.php [edit]
[-] class-wp-widget-factory.php [edit]
[-] class-wp-recovery-mode-cookie-service.php [edit]
[+] css
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[-] vars.php [edit]
[-] l10n.php [edit]
[-] class-wp-dependency.php [edit]
[-] pluggable-deprecated.php [edit]
[-] load.php [edit]
[-] wp-tmp.php [edit]
[-] nav-menu.php [edit]
[-] class-wp-http-streams.php [edit]
[-] capabilities.php [edit]
[-] class-wp-image-editor-gd.php [edit]
[-] class-wp-user-request.php [edit]
[-] class-wp-editor.php [edit]
[-] rss-functions.php [edit]
[-] rest-api.php [edit]
[-] class-wp-user.php [edit]
[-] script-loader.php [edit]
[-] class-walker-category.php [edit]
[-] class-wp-walker.php [edit]
[-] ms-deprecated.php [edit]
[+] blocks
[-] ms-default-filters.php [edit]
[+] ID3
[-] functions.php [edit]
[-] class-phpass.php [edit]
[-] ms-network.php [edit]
[-] feed-rss2-comments.php [edit]
[-] class-wp-user-meta-session-tokens.php [edit]
[-] class-wp-image-editor-imagick.php [edit]
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[-] atomlib.php [edit]
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[+] certificates
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[-] deprecated.php [edit]
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