1 files changed, 136 insertions, 0 deletions
diff --git a/plugins/jetpack/vendor/automattic/jetpack-sync/src/class-json-deflate-array-codec.php b/plugins/jetpack/vendor/automattic/jetpack-sync/src/class-json-deflate-array-codec.php
new file mode 100644
index 00000000..f13e5dcb
--- /dev/null
+++ b/plugins/jetpack/vendor/automattic/jetpack-sync/src/class-json-deflate-array-codec.php
@@ -0,0 +1,136 @@
+<?php
+/**
+ * An implementation of Automattic\Jetpack\Sync\Codec_Interface that uses gzip's DEFLATE
+ * algorithm to compress objects serialized using json_encode.
+ *
+ * @package automattic/jetpack-sync
+ */
+
+namespace Automattic\Jetpack\Sync;
+
+use Automattic\Jetpack\Sync\Codec_Interface;
+
+/**
+ * An implementation of Automattic\Jetpack\Sync\Codec_Interface that uses gzip's DEFLATE
+ * algorithm to compress objects serialized using json_encode
+ */
+class JSON_Deflate_Array_Codec implements Codec_Interface {
+	const CODEC_NAME = 'deflate-json-array';
+
+	/**
+	 * Return the name of the codec.
+	 *
+	 * @return string
+	 */
+	public function name() {
+		return self::CODEC_NAME;
+	}
+
+	/**
+	 * Encodes an object.
+	 *
+	 * @param object $object Item to encode.
+	 * @return string
+	 */
+	public function encode( $object ) {
+		return base64_encode( gzdeflate( $this->json_serialize( $object ) ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
+	}
+
+	/**
+	 * Decode compressed serialized value.
+	 *
+	 * @param string $input Item to decode.
+	 * @return array|mixed|object
+	 */
+	public function decode( $input ) {
+		return $this->json_unserialize( gzinflate( base64_decode( $input ) ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
+	}
+
+	/**
+	 * Serialize JSON
+	 *
+	 * @see https://gist.github.com/muhqu/820694
+	 *
+	 * @param string $any Value to serialize and wrap.
+	 *
+	 * @return false|string
+	 */
+	protected function json_serialize( $any ) {
+		if ( function_exists( 'jetpack_json_wrap' ) ) {
+			return wp_json_encode( jetpack_json_wrap( $any ) );
+		}
+		// This prevents fatal error when updating pre 6.0 via the cli command.
+		return wp_json_encode( $this->json_wrap( $any ) );
+	}
+
+	/**
+	 * Unserialize JSON
+	 *
+	 * @param string $str JSON string.
+	 * @return array|object Unwrapped JSON.
+	 */
+	protected function json_unserialize( $str ) {
+		return $this->json_unwrap( json_decode( $str, true ) );
+	}
+
+	/**
+	 * Wraps JSON
+	 *
+	 * @param object|array $any Wrapping value.
+	 * @param array        $seen_nodes Seen nodes.
+	 * @return array
+	 */
+	private function json_wrap( &$any, $seen_nodes = array() ) {
+		if ( is_object( $any ) ) {
+			$input        = get_object_vars( $any );
+			$input['__o'] = 1;
+		} else {
+			$input = &$any;
+		}
+
+		if ( is_array( $input ) ) {
+			$seen_nodes[] = &$any;
+
+			$return = array();
+
+			foreach ( $input as $k => &$v ) {
+				if ( ( is_array( $v ) || is_object( $v ) ) ) {
+					if ( in_array( $v, $seen_nodes, true ) ) {
+						continue;
+					}
+					$return[ $k ] = $this->json_wrap( $v, $seen_nodes );
+				} else {
+					$return[ $k ] = $v;
+				}
+			}
+
+			return $return;
+		}
+
+		return $any;
+	}
+
+	/**
+	 * Unwraps a json_decode return.
+	 *
+	 * @param array|object $any json_decode object.
+	 * @return array|object
+	 */
+	private function json_unwrap( $any ) {
+		if ( is_array( $any ) ) {
+			foreach ( $any as $k => $v ) {
+				if ( '__o' === $k ) {
+					continue;
+				}
+				$any[ $k ] = $this->json_unwrap( $v );
+			}
+
+			if ( isset( $any['__o'] ) ) {
+				unset( $any['__o'] );
+				$any = (object) $any;
+			}
+		}
+
+		return $any;
+	}
+}