class.json-api.php — Jetpack – WP Security, Backup, Speed, & Growth 9.8.1

jetpack / class.json-api.php

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class.json-api.php

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1	<?php
2
3	defined( 'WPCOM_JSON_API__DEBUG' ) or define( 'WPCOM_JSON_API__DEBUG', false );
4
5	require_once dirname( __FILE__ ) . '/sal/class.json-api-platform.php';
6
7	class WPCOM_JSON_API {
8	static $self = null;
9
10	public $endpoints = array();
11
12	public $token_details = array();
13
14	public $method = '';
15	public $url = '';
16	public $path = '';
17	public $version = null;
18	public $query = array();
19	public $post_body = null;
20	public $files = null;
21	public $content_type = null;
22	public $accept = '';
23
24	public $_server_https;
25	public $exit = true;
26	public $public_api_scheme = 'https';
27
28	public $output_status_code = 200;
29
30	public $trapped_error = null;
31	public $did_output = false;
32
33	public $extra_headers = array();
34
35	public $amp_source_origin = null;
36
37	/**
38	* @return WPCOM_JSON_API instance
39	*/
40	static function init( $method = null, $url = null, $post_body = null ) {
41	if ( ! self::$self ) {
42	$class = function_exists( 'get_called_class' ) ? get_called_class() : __CLASS__; // phpcs:ignore PHPCompatibility.PHP.NewFunctions.get_called_classFound
43	self::$self = new $class( $method, $url, $post_body );
44	}
45	return self::$self;
46	}
47
48	function add( WPCOM_JSON_API_Endpoint $endpoint ) {
49	$path_versions = serialize(
50	array(
51	$endpoint->path,
52	$endpoint->min_version,
53	$endpoint->max_version,
54	)
55	);
56	if ( ! isset( $this->endpoints[ $path_versions ] ) ) {
57	$this->endpoints[ $path_versions ] = array();
58	}
59	$this->endpoints[ $path_versions ][ $endpoint->method ] = $endpoint;
60	}
61
62	static function is_truthy( $value ) {
63	switch ( strtolower( (string) $value ) ) {
64	case '1':
65	case 't':
66	case 'true':
67	return true;
68	}
69
70	return false;
71	}
72
73	static function is_falsy( $value ) {
74	switch ( strtolower( (string) $value ) ) {
75	case '0':
76	case 'f':
77	case 'false':
78	return true;
79	}
80
81	return false;
82	}
83
84	function __construct( ...$args ) {
85	call_user_func_array( array( $this, 'setup_inputs' ), $args );
86	}
87
88	function setup_inputs( $method = null, $url = null, $post_body = null ) {
89	if ( is_null( $method ) ) {
90	$this->method = strtoupper( $_SERVER['REQUEST_METHOD'] );
91	} else {
92	$this->method = strtoupper( $method );
93	}
94	if ( is_null( $url ) ) {
95	$this->url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
96	} else {
97	$this->url = $url;
98	}
99
100	$parsed = wp_parse_url( $this->url );
101	if ( ! empty( $parsed['path'] ) ) {
102	$this->path = $parsed['path'];
103	}
104
105	if ( ! empty( $parsed['query'] ) ) {
106	wp_parse_str( $parsed['query'], $this->query );
107	}
108
109	if ( isset( $_SERVER['HTTP_ACCEPT'] ) && $_SERVER['HTTP_ACCEPT'] ) {
110	$this->accept = $_SERVER['HTTP_ACCEPT'];
111	}
112
113	if ( 'POST' === $this->method ) {
114	if ( is_null( $post_body ) ) {
115	$this->post_body = file_get_contents( 'php://input' );
116
117	if ( isset( $_SERVER['HTTP_CONTENT_TYPE'] ) && $_SERVER['HTTP_CONTENT_TYPE'] ) {
118	$this->content_type = $_SERVER['HTTP_CONTENT_TYPE'];
119	} elseif ( isset( $_SERVER['CONTENT_TYPE'] ) && $_SERVER['CONTENT_TYPE'] ) {
120	$this->content_type = $_SERVER['CONTENT_TYPE'];
121	} elseif ( '{' === $this->post_body[0] ) {
122	$this->content_type = 'application/json';
123	} else {
124	$this->content_type = 'application/x-www-form-urlencoded';
125	}
126
127	if ( 0 === strpos( strtolower( $this->content_type ), 'multipart/' ) ) {
128	$this->post_body = http_build_query( stripslashes_deep( $_POST ) );
129	$this->files = $_FILES;
130	$this->content_type = 'multipart/form-data';
131	}
132	} else {
133	$this->post_body = $post_body;
134	$this->content_type = '{' === isset( $this->post_body[0] ) && $this->post_body[0] ? 'application/json' : 'application/x-www-form-urlencoded';
135	}
136	} else {
137	$this->post_body = null;
138	$this->content_type = null;
139	}
140
141	$this->_server_https = array_key_exists( 'HTTPS', $_SERVER ) ? $_SERVER['HTTPS'] : '--UNset--';
142	}
143
144	function initialize() {
145	$this->token_details['blog_id'] = Jetpack_Options::get_option( 'id' );
146	}
147
148	/**
149	* Checks if the current request is authorized with a blog token.
150	* This method is overridden by a child class in WPCOM.
151	*
152	* @since 9.1.0
153	*
154	* @param boolean\|int $site_id The site id.
155	* @return boolean
156	*/
157	public function is_jetpack_authorized_for_site( $site_id = false ) {
158	if ( ! $this->token_details ) {
159	return false;
160	}
161
162	$token_details = (object) $this->token_details;
163
164	$site_in_token = (int) $token_details->blog_id;
165
166	if ( $site_in_token < 1 ) {
167	return false;
168	}
169
170	if ( $site_id && $site_in_token !== (int) $site_id ) {
171	return false;
172	}
173
174	if ( (int) get_current_user_id() !== 0 ) {
175	// If Jetpack blog token is used, no logged-in user should exist.
176	return false;
177	}
178
179	return true;
180	}
181
182	function serve( $exit = true ) {
183	ini_set( 'display_errors', false );
184
185	$this->exit = (bool) $exit;
186
187	// This was causing problems with Jetpack, but is necessary for wpcom
188	// @see https://github.com/Automattic/jetpack/pull/2603
189	// @see r124548-wpcom
190	if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
191	add_filter( 'home_url', array( $this, 'ensure_http_scheme_of_home_url' ), 10, 3 );
192	}
193
194	add_filter( 'user_can_richedit', '__return_true' );
195
196	add_filter( 'comment_edit_pre', array( $this, 'comment_edit_pre' ) );
197
198	$initialization = $this->initialize();
199	if ( 'OPTIONS' == $this->method ) {
200	/**
201	* Fires before the page output.
202	* Can be used to specify custom header options.
203	*
204	* @module json-api
205	*
206	* @since 3.1.0
207	*/
208	do_action( 'wpcom_json_api_options' );
209	return $this->output( 200, '', 'text/plain' );
210	}
211
212	if ( is_wp_error( $initialization ) ) {
213	$this->output_error( $initialization );
214	return;
215	}
216
217	// Normalize path and extract API version
218	$this->path = untrailingslashit( $this->path );
219	preg_match( '#^/rest/v(\d+(\.\d+)*)#', $this->path, $matches );
220	$this->path = substr( $this->path, strlen( $matches[0] ) );
221	$this->version = $matches[1];
222
223	$allowed_methods = array( 'GET', 'POST' );
224	$four_oh_five = false;
225
226	$is_help = preg_match( '#/help/?$#i', $this->path );
227	$matching_endpoints = array();
228
229	if ( $is_help ) {
230	$origin = get_http_origin();
231
232	if ( ! empty( $origin ) && 'GET' == $this->method ) {
233	header( 'Access-Control-Allow-Origin: ' . esc_url_raw( $origin ) );
234	}
235
236	$this->path = substr( rtrim( $this->path, '/' ), 0, -5 );
237	// Show help for all matching endpoints regardless of method
238	$methods = $allowed_methods;
239	$find_all_matching_endpoints = true;
240	// How deep to truncate each endpoint's path to see if it matches this help request
241	$depth = substr_count( $this->path, '/' ) + 1;
242	if ( false !== stripos( $this->accept, 'javascript' ) \|\| false !== stripos( $this->accept, 'json' ) ) {
243	$help_content_type = 'json';
244	} else {
245	$help_content_type = 'html';
246	}
247	} else {
248	if ( in_array( $this->method, $allowed_methods ) ) {
249	// Only serve requested method
250	$methods = array( $this->method );
251	$find_all_matching_endpoints = false;
252	} else {
253	// We don't allow this requested method - find matching endpoints and send 405
254	$methods = $allowed_methods;
255	$find_all_matching_endpoints = true;
256	$four_oh_five = true;
257	}
258	}
259
260	// Find which endpoint to serve
261	$found = false;
262	foreach ( $this->endpoints as $endpoint_path_versions => $endpoints_by_method ) {
263	$endpoint_path_versions = unserialize( $endpoint_path_versions );
264	$endpoint_path = $endpoint_path_versions[0];
265	$endpoint_min_version = $endpoint_path_versions[1];
266	$endpoint_max_version = $endpoint_path_versions[2];
267
268	// Make sure max_version is not less than min_version
269	if ( version_compare( $endpoint_max_version, $endpoint_min_version, '<' ) ) {
270	$endpoint_max_version = $endpoint_min_version;
271	}
272
273	foreach ( $methods as $method ) {
274	if ( ! isset( $endpoints_by_method[ $method ] ) ) {
275	continue;
276	}
277
278	// Normalize
279	$endpoint_path = untrailingslashit( $endpoint_path );
280	if ( $is_help ) {
281	// Truncate path at help depth
282	$endpoint_path = join( '/', array_slice( explode( '/', $endpoint_path ), 0, $depth ) );
283	}
284
285	// Generate regular expression from sprintf()
286	$endpoint_path_regex = str_replace( array( '%s', '%d' ), array( '([^/?&]+)', '(\d+)' ), $endpoint_path );
287
288	if ( ! preg_match( "#^$endpoint_path_regex\$#", $this->path, $path_pieces ) ) {
289	// This endpoint does not match the requested path.
290	continue;
291	}
292
293	if ( version_compare( $this->version, $endpoint_min_version, '<' ) \|\| version_compare( $this->version, $endpoint_max_version, '>' ) ) {
294	// This endpoint does not match the requested version.
295	continue;
296	}
297
298	$found = true;
299
300	if ( $find_all_matching_endpoints ) {
301	$matching_endpoints[] = array( $endpoints_by_method[ $method ], $path_pieces );
302	} else {
303	// The method parameters are now in $path_pieces
304	$endpoint = $endpoints_by_method[ $method ];
305	break 2;
306	}
307	}
308	}
309
310	if ( ! $found ) {
311	return $this->output( 404, '', 'text/plain' );
312	}
313
314	if ( $four_oh_five ) {
315	$allowed_methods = array();
316	foreach ( $matching_endpoints as $matching_endpoint ) {
317	$allowed_methods[] = $matching_endpoint[0]->method;
318	}
319
320	header( 'Allow: ' . strtoupper( join( ',', array_unique( $allowed_methods ) ) ) );
321	return $this->output(
322	405,
323	array(
324	'error' => 'not_allowed',
325	'error_message' => 'Method not allowed',
326	)
327	);
328	}
329
330	if ( $is_help ) {
331	/**
332	* Fires before the API output.
333	*
334	* @since 1.9.0
335	*
336	* @param string help.
337	*/
338	do_action( 'wpcom_json_api_output', 'help' );
339	$proxied = function_exists( 'wpcom_is_proxied_request' ) ? wpcom_is_proxied_request() : false;
340	if ( 'json' === $help_content_type ) {
341	$docs = array();
342	foreach ( $matching_endpoints as $matching_endpoint ) {
343	if ( $matching_endpoint[0]->is_publicly_documentable() \|\| $proxied \|\| WPCOM_JSON_API__DEBUG ) {
344	$docs[] = call_user_func( array( $matching_endpoint[0], 'generate_documentation' ) );
345	}
346	}
347	return $this->output( 200, $docs );
348	} else {
349	status_header( 200 );
350	foreach ( $matching_endpoints as $matching_endpoint ) {
351	if ( $matching_endpoint[0]->is_publicly_documentable() \|\| $proxied \|\| WPCOM_JSON_API__DEBUG ) {
352	call_user_func( array( $matching_endpoint[0], 'document' ) );
353	}
354	}
355	}
356	exit;
357	}
358
359	if ( $endpoint->in_testing && ! WPCOM_JSON_API__DEBUG ) {
360	return $this->output( 404, '', 'text/plain' );
361	}
362
363	/** This action is documented in class.json-api.php */
364	do_action( 'wpcom_json_api_output', $endpoint->stat );
365
366	$response = $this->process_request( $endpoint, $path_pieces );
367
368	if ( ! $response && ! is_array( $response ) ) {
369	return $this->output( 500, '', 'text/plain' );
370	} elseif ( is_wp_error( $response ) ) {
371	return $this->output_error( $response );
372	}
373
374	$output_status_code = $this->output_status_code;
375	$this->set_output_status_code();
376
377	return $this->output( $output_status_code, $response, 'application/json', $this->extra_headers );
378	}
379
380	function process_request( WPCOM_JSON_API_Endpoint $endpoint, $path_pieces ) {
381	$this->endpoint = $endpoint;
382	return call_user_func_array( array( $endpoint, 'callback' ), $path_pieces );
383	}
384
385	function output_early( $status_code, $response = null, $content_type = 'application/json' ) {
386	$exit = $this->exit;
387	$this->exit = false;
388	if ( is_wp_error( $response ) ) {
389	$this->output_error( $response );
390	} else {
391	$this->output( $status_code, $response, $content_type );
392	}
393	$this->exit = $exit;
394	if ( ! defined( 'XMLRPC_REQUEST' ) \|\| ! XMLRPC_REQUEST ) {
395	$this->finish_request();
396	}
397	}
398
399	function set_output_status_code( $code = 200 ) {
400	$this->output_status_code = $code;
401	}
402
403	function output( $status_code, $response = null, $content_type = 'application/json', $extra = array() ) {
404	// In case output() was called before the callback returned
405	if ( $this->did_output ) {
406	if ( $this->exit ) {
407	exit;
408	}
409	return $content_type;
410	}
411	$this->did_output = true;
412
413	// 400s and 404s are allowed for all origins
414	if ( 404 == $status_code \|\| 400 == $status_code ) {
415	header( 'Access-Control-Allow-Origin: *' );
416	}
417
418	/* Add headers for form submission from <amp-form/> */
419	if ( $this->amp_source_origin ) {
420	header( 'Access-Control-Allow-Origin: ' . wp_unslash( $this->amp_source_origin ) );
421	header( 'Access-Control-Allow-Credentials: true' );
422	}
423
424
425	if ( is_null( $response ) ) {
426	$response = new stdClass();
427	}
428
429	if ( 'text/plain' === $content_type \|\|
430	'text/html' === $content_type ) {
431	status_header( (int) $status_code );
432	header( 'Content-Type: ' . $content_type );
433	foreach ( $extra as $key => $value ) {
434	header( "$key: $value" );
435	}
436	echo $response;
437	if ( $this->exit ) {
438	exit;
439	}
440
441	return $content_type;
442	}
443
444	$response = $this->filter_fields( $response );
445
446	if ( isset( $this->query['http_envelope'] ) && self::is_truthy( $this->query['http_envelope'] ) ) {
447	$headers = array(
448	array(
449	'name' => 'Content-Type',
450	'value' => $content_type,
451	),
452	);
453
454	foreach ( $extra as $key => $value ) {
455	$headers[] = array(
456	'name' => $key,
457	'value' => $value,
458	);
459	}
460
461	$response = array(
462	'code' => (int) $status_code,
463	'headers' => $headers,
464	'body' => $response,
465	);
466	$status_code = 200;
467	$content_type = 'application/json';
468	}
469
470	status_header( (int) $status_code );
471	header( "Content-Type: $content_type" );
472	if ( isset( $this->query['callback'] ) && is_string( $this->query['callback'] ) ) {
473	$callback = preg_replace( '/[^a-z0-9_.]/i', '', $this->query['callback'] );
474	} else {
475	$callback = false;
476	}
477
478	if ( $callback ) {
479	// Mitigate Rosetta Flash [1] by setting the Content-Type-Options: nosniff header
480	// and by prepending the JSONP response with a JS comment.
481	// [1] https://blog.miki.it/2014/7/8/abusing-jsonp-with-rosetta-flash/index.html
482	echo "/**/$callback(";
483
484	}
485	echo $this->json_encode( $response );
486	if ( $callback ) {
487	echo ');';
488	}
489
490	if ( $this->exit ) {
491	exit;
492	}
493
494	return $content_type;
495	}
496
497	public static function serializable_error( $error ) {
498
499	$status_code = $error->get_error_data();
500
501	if ( is_array( $status_code ) ) {
502	$status_code = $status_code['status_code'];
503	}
504
505	if ( ! $status_code ) {
506	$status_code = 400;
507	}
508	$response = array(
509	'error' => $error->get_error_code(),
510	'message' => $error->get_error_message(),
511	);
512
513	if ( $additional_data = $error->get_error_data( 'additional_data' ) ) {
514	$response['data'] = $additional_data;
515	}
516
517	return array(
518	'status_code' => $status_code,
519	'errors' => $response,
520	);
521	}
522
523	function output_error( $error ) {
524	$error_response = $this->serializable_error( $error );
525
526	return $this->output( $error_response['status_code'], $error_response['errors'] );
527	}
528
529	function filter_fields( $response ) {
530	if ( empty( $this->query['fields'] ) \|\| ( is_array( $response ) && ! empty( $response['error'] ) ) \|\| ! empty( $this->endpoint->custom_fields_filtering ) ) {
531	return $response;
532	}
533
534	$fields = array_map( 'trim', explode( ',', $this->query['fields'] ) );
535
536	if ( is_object( $response ) ) {
537	$response = (array) $response;
538	}
539
540	$has_filtered = false;
541	if ( is_array( $response ) && empty( $response['ID'] ) ) {
542	$keys_to_filter = array(
543	'categories',
544	'comments',
545	'connections',
546	'domains',
547	'groups',
548	'likes',
549	'media',
550	'notes',
551	'posts',
552	'services',
553	'sites',
554	'suggestions',
555	'tags',
556	'themes',
557	'topics',
558	'users',
559	);
560
561	foreach ( $keys_to_filter as $key_to_filter ) {
562	if ( ! isset( $response[ $key_to_filter ] ) \|\| $has_filtered ) {
563	continue;
564	}
565
566	foreach ( $response[ $key_to_filter ] as $key => $values ) {
567	if ( is_object( $values ) ) {
568	if ( is_object( $response[ $key_to_filter ] ) ) {
569	$response[ $key_to_filter ]->$key = (object) array_intersect_key( ( (array) $values ), array_flip( $fields ) );
570	} elseif ( is_array( $response[ $key_to_filter ] ) ) {
571	$response[ $key_to_filter ][ $key ] = (object) array_intersect_key( ( (array) $values ), array_flip( $fields ) );
572	}
573	} elseif ( is_array( $values ) ) {
574	$response[ $key_to_filter ][ $key ] = array_intersect_key( $values, array_flip( $fields ) );
575	}
576	}
577
578	$has_filtered = true;
579	}
580	}
581
582	if ( ! $has_filtered ) {
583	if ( is_object( $response ) ) {
584	$response = (object) array_intersect_key( (array) $response, array_flip( $fields ) );
585	} elseif ( is_array( $response ) ) {
586	$response = array_intersect_key( $response, array_flip( $fields ) );
587	}
588	}
589
590	return $response;
591	}
592
593	function ensure_http_scheme_of_home_url( $url, $path, $original_scheme ) {
594	if ( $original_scheme ) {
595	return $url;
596	}
597
598	return preg_replace( '#^https:#', 'http:', $url );
599	}
600
601	function comment_edit_pre( $comment_content ) {
602	return htmlspecialchars_decode( $comment_content, ENT_QUOTES );
603	}
604
605	function json_encode( $data ) {
606	return wp_json_encode( $data );
607	}
608
609	function ends_with( $haystack, $needle ) {
610	return $needle === substr( $haystack, -strlen( $needle ) );
611	}
612
613	// Returns the site's blog_id in the WP.com ecosystem
614	function get_blog_id_for_output() {
615	return $this->token_details['blog_id'];
616	}
617
618	// Returns the site's local blog_id
619	function get_blog_id( $blog_id ) {
620	return $GLOBALS['blog_id'];
621	}
622
623	function switch_to_blog_and_validate_user( $blog_id = 0, $verify_token_for_blog = true ) {
624	if ( $this->is_restricted_blog( $blog_id ) ) {
625	return new WP_Error( 'unauthorized', 'User cannot access this restricted blog', 403 );
626	}
627	/**
628	* If this is a private site we check for 2 things:
629	* 1. In case of user based authentication, we need to check if the logged-in user has the 'read' capability.
630	* 2. In case of site based authentication, make sure the endpoint accepts it.
631	*/
632	if ( -1 === (int) get_option( 'blog_public' ) &&
633	! current_user_can( 'read' ) &&
634	! $this->endpoint->accepts_site_based_authentication()
635	) {
636	return new WP_Error( 'unauthorized', 'User cannot access this private blog.', 403 );
637	}
638
639	return $blog_id;
640	}
641
642	// Returns true if the specified blog ID is a restricted blog
643	function is_restricted_blog( $blog_id ) {
644	/**
645	* Filters all REST API access and return a 403 unauthorized response for all Restricted blog IDs.
646	*
647	* @module json-api
648	*
649	* @since 3.4.0
650	*
651	* @param array $array Array of Blog IDs.
652	*/
653	$restricted_blog_ids = apply_filters( 'wpcom_json_api_restricted_blog_ids', array() );
654	return true === in_array( $blog_id, $restricted_blog_ids );
655	}
656
657	function post_like_count( $blog_id, $post_id ) {
658	return 0;
659	}
660
661	function is_liked( $blog_id, $post_id ) {
662	return false;
663	}
664
665	function is_reblogged( $blog_id, $post_id ) {
666	return false;
667	}
668
669	function is_following( $blog_id ) {
670	return false;
671	}
672
673	function add_global_ID( $blog_id, $post_id ) {
674	return '';
675	}
676
677	function get_avatar_url( $email, $avatar_size = null ) {
678	if ( function_exists( 'wpcom_get_avatar_url' ) ) {
679	return null === $avatar_size
680	? wpcom_get_avatar_url( $email )
681	: wpcom_get_avatar_url( $email, $avatar_size );
682	} else {
683	return null === $avatar_size
684	? get_avatar_url( $email )
685	: get_avatar_url( $email, $avatar_size );
686	}
687	}
688
689	/**
690	* Counts the number of comments on a site, excluding certain comment types.
691	*
692	* @param $post_id int Post ID.
693	* @return array Array of counts, matching the output of https://developer.wordpress.org/reference/functions/get_comment_count/.
694	*/
695	public function wp_count_comments( $post_id ) {
696	global $wpdb;
697	if ( 0 !== $post_id ) {
698	return wp_count_comments( $post_id );
699	}
700
701	$counts = array(
702	'total_comments' => 0,
703	'all' => 0,
704	);
705
706	/**
707	* Exclude certain comment types from comment counts in the REST API.
708	*
709	* @since 6.9.0
710	* @module json-api
711	*
712	* @param array Array of comment types to exclude (default: 'order_note', 'webhook_delivery', 'review', 'action_log')
713	*/
714	$exclude = apply_filters(
715	'jetpack_api_exclude_comment_types_count',
716	array( 'order_note', 'webhook_delivery', 'review', 'action_log' )
717	);
718
719	if ( empty( $exclude ) ) {
720	return wp_count_comments( $post_id );
721	}
722
723	array_walk( $exclude, 'esc_sql' );
724	$where = sprintf(
725	"WHERE comment_type NOT IN ( '%s' )",
726	implode( "','", $exclude )
727	);
728
729	$count = $wpdb->get_results(
730	"SELECT comment_approved, COUNT(*) AS num_comments
731	FROM $wpdb->comments
732	{$where}
733	GROUP BY comment_approved
734	"
735	);
736
737	$approved = array(
738	'0' => 'moderated',
739	'1' => 'approved',
740	'spam' => 'spam',
741	'trash' => 'trash',
742	'post-trashed' => 'post-trashed',
743	);
744
745	// https://developer.wordpress.org/reference/functions/get_comment_count/#source
746	foreach ( $count as $row ) {
747	if ( ! in_array( $row->comment_approved, array( 'post-trashed', 'trash', 'spam' ), true ) ) {
748	$counts['all'] += $row->num_comments;
749	$counts['total_comments'] += $row->num_comments;
750	} elseif ( ! in_array( $row->comment_approved, array( 'post-trashed', 'trash' ), true ) ) {
751	$counts['total_comments'] += $row->num_comments;
752	}
753	if ( isset( $approved[ $row->comment_approved ] ) ) {
754	$counts[ $approved[ $row->comment_approved ] ] = $row->num_comments;
755	}
756	}
757
758	foreach ( $approved as $key ) {
759	if ( empty( $counts[ $key ] ) ) {
760	$counts[ $key ] = 0;
761	}
762	}
763
764	$counts = (object) $counts;
765
766	return $counts;
767	}
768
769	/**
770	* traps `wp_die()` calls and outputs a JSON response instead.
771	* The result is always output, never returned.
772	*
773	* @param string\|null $error_code Call with string to start the trapping. Call with null to stop.
774	* @param int $http_status HTTP status code, 400 by default.
775	*/
776	function trap_wp_die( $error_code = null, $http_status = 400 ) {
777	// Determine the filter name; based on the conditionals inside the wp_die function.
778	if ( wp_is_json_request() ) {
779	$die_handler = 'wp_die_json_handler';
780	} elseif ( wp_is_jsonp_request() ) {
781	$die_handler = 'wp_die_jsonp_handler';
782	} elseif ( wp_is_xml_request() ) {
783	$die_handler = 'wp_die_xml_handler';
784	} else {
785	$die_handler = 'wp_die_handler';
786	}
787
788	if ( is_null( $error_code ) ) {
789	$this->trapped_error = null;
790	// Stop trapping
791	remove_filter( $die_handler, array( $this, 'wp_die_handler_callback' ) );
792	return;
793	}
794
795	// If API called via PHP, bail: don't do our custom wp_die(). Do the normal wp_die().
796	if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
797	if ( ! defined( 'REST_API_REQUEST' ) \|\| ! REST_API_REQUEST ) {
798	return;
799	}
800	} else {
801	if ( ! defined( 'XMLRPC_REQUEST' ) \|\| ! XMLRPC_REQUEST ) {
802	return;
803	}
804	}
805
806	$this->trapped_error = array(
807	'status' => $http_status,
808	'code' => $error_code,
809	'message' => '',
810	);
811	// Start trapping
812	add_filter( $die_handler, array( $this, 'wp_die_handler_callback' ) );
813	}
814
815	function wp_die_handler_callback() {
816	return array( $this, 'wp_die_handler' );
817	}
818
819	function wp_die_handler( $message, $title = '', $args = array() ) {
820	// Allow wp_die calls to override HTTP status code...
821	$args = wp_parse_args(
822	$args,
823	array(
824	'response' => $this->trapped_error['status'],
825	)
826	);
827
828	// ... unless it's 500
829	if ( (int) $args['response'] !== 500 ) {
830	$this->trapped_error['status'] = $args['response'];
831	}
832
833	if ( $title ) {
834	$message = "$title: $message";
835	}
836
837	$this->trapped_error['message'] = wp_kses( $message, array() );
838
839	switch ( $this->trapped_error['code'] ) {
840	case 'comment_failure':
841	if ( did_action( 'comment_duplicate_trigger' ) ) {
842	$this->trapped_error['code'] = 'comment_duplicate';
843	} elseif ( did_action( 'comment_flood_trigger' ) ) {
844	$this->trapped_error['code'] = 'comment_flood';
845	}
846	break;
847	}
848
849	// We still want to exit so that code execution stops where it should.
850	// Attach the JSON output to the WordPress shutdown handler
851	add_action( 'shutdown', array( $this, 'output_trapped_error' ), 0 );
852	exit;
853	}
854
855	function output_trapped_error() {
856	$this->exit = false; // We're already exiting once. Don't do it twice.
857	$this->output(
858	$this->trapped_error['status'],
859	(object) array(
860	'error' => $this->trapped_error['code'],
861	'message' => $this->trapped_error['message'],
862	)
863	);
864	}
865
866	function finish_request() {
867	if ( function_exists( 'fastcgi_finish_request' ) ) {
868	return fastcgi_finish_request();
869	}
870	}
871	}
872