jetpack / modules / shortlinks.php

shortlinks.php in Jetpack – WP Security, Backup, Speed, & Growth 13.7.1, at modules/shortlinks.php

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1	<?php
2	/**
3	* Module Name: WP.me Shortlinks
4	* Module Description: Generates shorter links using the wp.me domain.
5	* Sort Order: 8
6	* First Introduced: 1.1
7	* Requires Connection: Yes
8	* Auto Activate: No
9	* Module Tags: Social
10	* Feature: Writing
11	* Additional Search Queries: shortlinks, wp.me
12	*
13	* @package automattic/jetpack
14	*/
15
16	add_filter( 'pre_get_shortlink', 'wpme_get_shortlink_handler', 1, 4 );
17
18	if ( ! function_exists( 'wpme_dec2sixtwo' ) ) {
19	/**
20	* Converts number to base 62.
21	*
22	* @param int $num Number.
23	*
24	* @return string Value in base 62.
25	*/
26	function wpme_dec2sixtwo( $num ) {
27	$index = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
28	$out = '';
29
30	if ( $num < 0 ) {
31	$out = '-';
32	$num = abs( $num );
33	}
34
35	for ( $t = floor( log10( $num ) / log10( 62 ) ); $t >= 0; $t-- ) {
36	$a = floor( $num / pow( 62, $t ) );
37	$out = $out . substr( $index, $a, 1 );
38	$num = $num - ( $a * pow( 62, $t ) );
39	}
40
41	return $out;
42	}
43	}
44
45	/**
46	* Returns the WP.me shortlink.
47	*
48	* @param int $id Post ID, or 0 for the current post.
49	* @param string $context The context for the link. One of 'post' or 'query'.
50	* @param bool $allow_slugs Whether to allow post slugs in the shortlink.
51	*
52	* @return string
53	*/
54	function wpme_get_shortlink( $id = 0, $context = 'post', $allow_slugs = true ) {
55	global $wp_query;
56
57	$blog_id = Jetpack_Options::get_option( 'id' );
58
59	if ( 'query' === $context ) {
60	if ( is_singular() ) {
61	$id = $wp_query->get_queried_object_id();
62	$context = 'post';
63	} elseif ( is_front_page() ) {
64	$context = 'blog';
65	} else {
66	return '';
67	}
68	}
69
70	if ( 'blog' === $context ) {
71	if ( empty( $id ) ) {
72	$id = $blog_id;
73	}
74
75	return 'https://wp.me/' . wpme_dec2sixtwo( $id );
76	}
77
78	$post = get_post( $id );
79
80	if ( empty( $post ) ) {
81	return '';
82	}
83
84	$post_id = $post->ID;
85	$type = '';
86
87	if ( $allow_slugs && 'publish' === $post->post_status && 'post' === $post->post_type && strlen( $post->post_name ) <= 8 && ! str_contains( $post->post_name, '%' )
88	&& ! str_contains( $post->post_name, '-' ) ) {
89	$id = $post->post_name;
90	$type = 's';
91	} else {
92	$id = wpme_dec2sixtwo( $post_id );
93	if ( 'page' === $post->post_type ) {
94	$type = 'P';
95	} elseif ( 'post' === $post->post_type \|\| post_type_supports( $post->post_type, 'shortlinks' ) ) {
96	$type = 'p';
97	} elseif ( 'attachment' === $post->post_type ) {
98	$type = 'a';
99	}
100	}
101
102	if ( empty( $type ) ) {
103	return '';
104	}
105
106	return 'https://wp.me/' . $type . wpme_dec2sixtwo( $blog_id ) . '-' . $id;
107	}
108
109	/**
110	* Get the shortlink handler.
111	*
112	* Used with the Core pre_get_shortlink hook.
113	*
114	* @param string $shortlink Shortlink value from the action. Ignored.
115	* @param int $id Post ID (0 for the current post).
116	* @param string $context The context for the link. One of 'post' or 'query'.
117	* @param bool $allow_slugs Whether to allow post slugs in the shortlink.
118	*
119	* @return string
120	*/
121	function wpme_get_shortlink_handler( $shortlink, $id, $context, $allow_slugs ) {
122	return wpme_get_shortlink( $id, $context, $allow_slugs );
123	}
124
125	/**
126	* Add Shortlinks to the REST API responses.
127	*
128	* @since 6.9.0
129	*
130	* @action rest_api_init
131	* @uses register_rest_field, wpme_rest_get_shortlink
132	*/
133	function wpme_rest_register_shortlinks() {
134	// Post types that support shortlinks by default.
135	$supported_post_types = array(
136	'attachment',
137	'page',
138	'post',
139	);
140
141	// Add any CPT that may have declared support for shortlinks.
142	foreach ( get_post_types() as $post_type ) {
143	if (
144	post_type_supports( $post_type, 'shortlinks' )
145	&& post_type_supports( $post_type, 'editor' )
146	) {
147	$supported_post_types[] = $post_type;
148	}
149	}
150
151	register_rest_field(
152	$supported_post_types,
153	'jetpack_shortlink',
154	array(
155	'get_callback' => 'wpme_rest_get_shortlink',
156	'update_callback' => null,
157	'schema' => null,
158	)
159	);
160	}
161
162	/**
163	* Get the shortlink of a post.
164	*
165	* @since 6.9.0
166	*
167	* @param array $object Details of current post.
168	*
169	* @uses wpme_get_shortlink
170	*
171	* @return string
172	*/
173	function wpme_rest_get_shortlink( $object ) {
174	$object_id = $object['id'] ?? 0;
175	return wpme_get_shortlink( $object_id, array() );
176	}
177
178	// Add shortlinks to the REST API Post response.
179	add_action( 'rest_api_init', 'wpme_rest_register_shortlinks' );
180
181	/**
182	* Set the Shortlink Gutenberg extension as available.
183	*/
184	function wpme_set_extension_available() {
185	Jetpack_Gutenberg::set_extension_available( 'jetpack/shortlinks' );
186	}
187
188	add_action( 'init', 'wpme_set_extension_available' );
189