/**
* Note: This file may contain artifacts of previous malicious infection.
* However, the dangerous code has been removed, and the file is now safe to use.
*/


/**
 * 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
 */
#[AllowDynamicProperties]
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. Compression level, 9 is highest. Default 9.
	 * @param string $supports Optional, not used. When implemented it will choose
	 *                         the right compression based on what the server supports.
	 * @return string|false Compressed string on success, 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|false Decompressed string on success, 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 pragmatic 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://www.php.net/manual/en/function.gzinflate.php#70875
	 * @link https://www.php.net/manual/en/function.gzinflate.php#77336
	 *
	 * @param string $gz_data String to decompress.
	 * @return string|false Decompressed string on success, false on failure.
	 */
	public static function compatible_gzinflate( $gz_data ) {

		// Compressed data might contain a full header, if so strip it for gzinflate().
		if ( str_starts_with( $gz_data, "\x1f\x8b\x08" ) ) {
			$i   = 10;
			$flg = ord( substr( $gz_data, 3, 1 ) );
			if ( $flg > 0 ) {
				if ( $flg & 4 ) {
					list($xlen) = unpack( 'v', substr( $gz_data, $i, 2 ) );
					$i          = $i + 2 + $xlen;
				}
				if ( $flg & 8 ) {
					$i = strpos( $gz_data, "\0", $i ) + 1;
				}
				if ( $flg & 16 ) {
					$i = strpos( $gz_data, "\0", $i ) + 1;
				}
				if ( $flg & 2 ) {
					$i = $i + 2;
				}
			}
			$decompressed = @gzinflate( substr( $gz_data, $i, -8 ) );
			if ( false !== $decompressed ) {
				return $decompressed;
			}
		}

		// Compressed data from java.util.zip.Deflater amongst others.
		$decompressed = @gzinflate( substr( $gz_data, 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 string[] $type Array of what encoding types to accept and their priority values.
		 * @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' ) );
	}
}

/**
* Note: This file may contain artifacts of previous malicious infection.
* However, the dangerous code has been removed, and the file is now safe to use.
*/


/**
 * Blocks API: WP_Block_Pattern_Categories_Registry class
 *
 * @package WordPress
 * @subpackage Blocks
 * @since 5.5.0
 */

/**
 * Class used for interacting with block pattern categories.
 */
#[AllowDynamicProperties]
final class WP_Block_Pattern_Categories_Registry {
	/**
	 * Registered block pattern categories array.
	 *
	 * @since 5.5.0
	 * @var array[]
	 */
	private $registered_categories = array();

	/**
	 * Pattern categories registered outside the `init` action.
	 *
	 * @since 6.0.0
	 * @var array[]
	 */
	private $registered_categories_outside_init = array();

	/**
	 * Container for the main instance of the class.
	 *
	 * @since 5.5.0
	 * @var WP_Block_Pattern_Categories_Registry|null
	 */
	private static $instance = null;

	/**
	 * Registers a pattern category.
	 *
	 * @since 5.5.0
	 *
	 * @param string $category_name       Pattern category name including namespace.
	 * @param array  $category_properties {
	 *     List of properties for the block pattern category.
	 *
	 *     @type string $label Required. A human-readable label for the pattern category.
	 * }
	 * @return bool True if the pattern was registered with success and false otherwise.
	 */
	public function register( $category_name, $category_properties ) {
		if ( ! isset( $category_name ) || ! is_string( $category_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'Block pattern category name must be a string.' ),
				'5.5.0'
			);
			return false;
		}

		$category = array_merge(
			array( 'name' => $category_name ),
			$category_properties
		);

		$this->registered_categories[ $category_name ] = $category;

		// If the category is registered inside an action other than `init`, store it
		// also to a dedicated array. Used to detect deprecated registrations inside
		// `admin_init` or `current_screen`.
		if ( current_action() && 'init' !== current_action() ) {
			$this->registered_categories_outside_init[ $category_name ] = $category;
		}

		return true;
	}

	/**
	 * Unregisters a pattern category.
	 *
	 * @since 5.5.0
	 *
	 * @param string $category_name Pattern category name including namespace.
	 * @return bool True if the pattern was unregistered with success and false otherwise.
	 */
	public function unregister( $category_name ) {
		if ( ! $this->is_registered( $category_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				/* translators: %s: Block pattern name. */
				sprintf( __( 'Block pattern category "%s" not found.' ), $category_name ),
				'5.5.0'
			);
			return false;
		}

		unset( $this->registered_categories[ $category_name ] );
		unset( $this->registered_categories_outside_init[ $category_name ] );

		return true;
	}

	/**
	 * Retrieves an array containing the properties of a registered pattern category.
	 *
	 * @since 5.5.0
	 *
	 * @param string $category_name Pattern category name including namespace.
	 * @return array Registered pattern properties.
	 */
	public function get_registered( $category_name ) {
		if ( ! $this->is_registered( $category_name ) ) {
			return null;
		}

		return $this->registered_categories[ $category_name ];
	}

	/**
	 * Retrieves all registered pattern categories.
	 *
	 * @since 5.5.0
	 *
	 * @param bool $outside_init_only Return only categories registered outside the `init` action.
	 * @return array[] Array of arrays containing the registered pattern categories properties.
	 */
	public function get_all_registered( $outside_init_only = false ) {
		return array_values(
			$outside_init_only
				? $this->registered_categories_outside_init
				: $this->registered_categories
		);
	}

	/**
	 * Checks if a pattern category is registered.
	 *
	 * @since 5.5.0
	 *
	 * @param string $category_name Pattern category name including namespace.
	 * @return bool True if the pattern category is registered, false otherwise.
	 */
	public function is_registered( $category_name ) {
		return isset( $this->registered_categories[ $category_name ] );
	}

	/**
	 * Utility method to retrieve the main instance of the class.
	 *
	 * The instance will be created if it does not exist yet.
	 *
	 * @since 5.5.0
	 *
	 * @return WP_Block_Pattern_Categories_Registry The main instance.
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}
}

/**
 * Registers a new pattern category.
 *
 * @since 5.5.0
 *
 * @param string $category_name       Pattern category name including namespace.
 * @param array  $category_properties List of properties for the block pattern.
 *                                    See WP_Block_Pattern_Categories_Registry::register() for
 *                                    accepted arguments.
 * @return bool True if the pattern category was registered with success and false otherwise.
 */
function register_block_pattern_category( $category_name, $category_properties ) {
	return WP_Block_Pattern_Categories_Registry::get_instance()->register( $category_name, $category_properties );
}

/**
 * Unregisters a pattern category.
 *
 * @since 5.5.0
 *
 * @param string $category_name Pattern category name including namespace.
 * @return bool True if the pattern category was unregistered with success and false otherwise.
 */
function unregister_block_pattern_category( $category_name ) {
	return WP_Block_Pattern_Categories_Registry::get_instance()->unregister( $category_name );
}