jetpack / jetpack_vendor / automattic / jetpack-sync / src / class-json-deflate-array-codec.php

class-json-deflate-array-codec.php in Jetpack – WP Security, Backup, Speed, & Growth 16.3-a.1, at jetpack_vendor/automattic/jetpack-sync/src/class-json-deflate-array-codec.php

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1	<?php
2	/**
3	* An implementation of Automattic\Jetpack\Sync\Codec_Interface that uses gzip's DEFLATE
4	* algorithm to compress objects serialized using json_encode.
5	*
6	* @package automattic/jetpack-sync
7	*/
8
9	namespace Automattic\Jetpack\Sync;
10
11	if ( ! defined( 'ABSPATH' ) ) {
12	exit( 0 );
13	}
14
15	/**
16	* An implementation of Automattic\Jetpack\Sync\Codec_Interface that uses gzip's DEFLATE
17	* algorithm to compress objects serialized using json_encode
18	*/
19	class JSON_Deflate_Array_Codec implements Codec_Interface {
20	const CODEC_NAME = 'deflate-json-array';
21
22	/**
23	* Return the name of the codec.
24	*
25	* @return string
26	*/
27	public function name() {
28	return self::CODEC_NAME;
29	}
30
31	/**
32	* Encodes an object.
33	*
34	* @param object $object Item to encode.
35	* @return string
36	*/
37	public function encode( $object ) {
38	return base64_encode( gzdeflate( $this->json_serialize( $object ) ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
39	}
40
41	/**
42	* Decode compressed serialized value.
43	*
44	* @param string $input Item to decode.
45	* @return array\|mixed\|object
46	*/
47	public function decode( $input ) {
48	$decoded = base64_decode( $input ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
49	$inflated = @gzinflate( $decoded ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
50
51	return is_string( $inflated ) ? $this->json_unserialize( $inflated ) : null;
52	}
53
54	/**
55	* Serialize JSON
56	*
57	* @see https://gist.github.com/muhqu/820694
58	*
59	* @param mixed $any Value to serialize and wrap.
60	*
61	* @return false\|string
62	*/
63	protected function json_serialize( $any ) {
64	return wp_json_encode( Functions::json_wrap( $any ), JSON_UNESCAPED_SLASHES );
65	}
66
67	/**
68	* Unserialize JSON
69	*
70	* @param string $str JSON string.
71	* @return array\|object Unwrapped JSON.
72	*/
73	protected function json_unserialize( $str ) {
74	return $this->json_unwrap( json_decode( $str, true ) );
75	}
76
77	/**
78	* Unwraps a json_decode return.
79	*
80	* @param array\|object $any json_decode object.
81	* @return array\|object
82	*/
83	private function json_unwrap( $any ) {
84	if ( is_array( $any ) ) {
85	foreach ( $any as $k => $v ) {
86	if ( '__o' === $k ) {
87	continue;
88	}
89	$any[ $k ] = $this->json_unwrap( $v );
90	}
91
92	if ( isset( $any['__o'] ) ) {
93	unset( $any['__o'] );
94	$any = (object) $any;
95	}
96	}
97
98	return $any;
99	}
100	}
101