← All changes | includes/class-mention.php +94 -61 9.2.0 → 2.6.0 View file →

		@@ -1,95 +1,128 @@
1	1	<?php
2		-/**
3		- * Mention class file.
4		- *
5		- * @package Activitypub
6		- */
	2	+namespace Activitypub;
7	3
8		-namespace Activitypub;
	4	+use WP_Error;
	5	+use Activitypub\Webfinger;
9	6
10		-use Activitypub\Collection\Remote_Actors;
	7	+use function Activitypub\object_to_uri;
11	8
12	9	/**
13		- * ActivityPub Mention Class.
	10	+ * ActivityPub Mention Class
14	11	*
15	12	* @author Alex Kirk
16	13	*/
17	14	class Mention {
18	15	/**
19		- * Initialize the class, registering WordPress hooks.
	16	+ * Initialize the class, registering WordPress hooks
20	17	*/
21	18	public static function init() {
22		- \add_filter( 'the_content', array( self::class, 'the_content' ), 99 );
23		- \add_filter( 'comment_text', array( self::class, 'the_content' ) );
24		- \add_filter( 'activitypub_extra_field_content', array( self::class, 'the_content' ) );
	19	+ \add_filter( 'the_content', array( self::class, 'the_content' ), 99, 1 );
	20	+ \add_filter( 'comment_text', array( self::class, 'the_content' ), 10, 1 );
25	21	\add_filter( 'activitypub_extract_mentions', array( self::class, 'extract_mentions' ), 99, 2 );
26		- \add_filter( 'activitypub_activity_object_array', array( self::class, 'filter_activity_object' ), 99 );
27	22	}
28	23
29	24	/**
30		- * Filter only the activity object and replace summery it with URLs
31		- * add tag to user.
	25	+ * Filter to replace the mentions in the content with links
32	26	*
33		- * @param array $object_array Array of activity.
	27	+ * @param string $the_content the post-content
34	28	*
35		- * @return array The activity object array.
	29	+ * @return string the filtered post-content
36	30	*/
37		- public static function filter_activity_object( $object_array ) {
38		- if ( ! empty( $object_array['summary'] ) ) {
39		- $object_array['summary'] = self::the_content( $object_array['summary'] );
	31	+ public static function the_content( $the_content ) {
	32	+ // small protection against execution timeouts: limit to 1 MB
	33	+ if ( mb_strlen( $the_content ) > MB_IN_BYTES ) {
	34	+ return $the_content;
40	35	}
	36	+ $tag_stack = array();
	37	+ $protected_tags = array(
	38	+ 'pre',
	39	+ 'code',
	40	+ 'textarea',
	41	+ 'style',
	42	+ 'a',
	43	+ );
	44	+ $content_with_links = '';
	45	+ $in_protected_tag = false;
	46	+ foreach ( wp_html_split( $the_content ) as $chunk ) {
	47	+ if ( preg_match( '#^<!--[\s\S]*-->$#i', $chunk, $m ) ) {
	48	+ $content_with_links .= $chunk;
	49	+ continue;
	50	+ }
41	51
42		- if ( ! empty( $object_array['content'] ) ) {
43		- $object_array['content'] = self::the_content( $object_array['content'] );
	52	+ if ( preg_match( '#^<(/)?([a-z-]+)\b[^>]*>$#i', $chunk, $m ) ) {
	53	+ $tag = strtolower( $m[2] );
	54	+ if ( '/' === $m[1] ) {
	55	+ // Closing tag.
	56	+ $i = array_search( $tag, $tag_stack );
	57	+ // We can only remove the tag from the stack if it is in the stack.
	58	+ if ( false !== $i ) {
	59	+ $tag_stack = array_slice( $tag_stack, 0, $i );
	60	+ }
	61	+ } else {
	62	+ // Opening tag, add it to the stack.
	63	+ $tag_stack[] = $tag;
	64	+ }
	65	+
	66	+ // If we're in a protected tag, the tag_stack contains at least one protected tag string.
	67	+ // The protected tag state can only change when we encounter a start or end tag.
	68	+ $in_protected_tag = array_intersect( $tag_stack, $protected_tags );
	69	+
	70	+ // Never inspect tags.
	71	+ $content_with_links .= $chunk;
	72	+ continue;
	73	+ }
	74	+
	75	+ if ( $in_protected_tag ) {
	76	+ // Don't inspect a chunk inside an inspected tag.
	77	+ $content_with_links .= $chunk;
	78	+ continue;
	79	+ }
	80	+
	81	+ // Only reachable when there is no protected tag in the stack.
	82	+ $content_with_links .= \preg_replace_callback( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/', array( self::class, 'replace_with_links' ), $chunk );
44	83	}
45	84
46		- return $object_array;
	85	+ return $content_with_links;
47	86	}
48	87
49	88	/**
50		- * Filter to replace the mentions in the content with links.
	89	+ * A callback for preg_replace to build the user links
51	90	*
52		- * @param string $the_content The post content.
	91	+ * @param array $result the preg_match results
53	92	*
54		- * @return string The filtered post-content.
	93	+ * @return string the final string
55	94	*/
56		- public static function the_content( $the_content ) {
57		- return enrich_content_data( $the_content, '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/', array( self::class, 'replace_with_links' ) );
58		- }
59		-
60		- /**
61		- * A callback for preg_replace to build the user links.
62		- *
63		- * @param array $result The preg_match results.
64		- *
65		- * @return string The final string.
66		- */
67	95	public static function replace_with_links( $result ) {
68		- $post = Remote_Actors::fetch_by_acct( $result[0] );
	96	+ $metadata = get_remote_metadata_by_actor( $result[0] );
69	97
70		- if ( \is_wp_error( $post ) ) {
71		- return $result[0];
72		- }
	98	+ if (
	99	+ ! empty( $metadata ) &&
	100	+ ! is_wp_error( $metadata ) &&
	101	+ ( ! empty( $metadata['id'] ) || ! empty( $metadata['url'] ) )
	102	+ ) {
	103	+ $username = ltrim( $result[0], '@' );
	104	+ if ( ! empty( $metadata['name'] ) ) {
	105	+ $username = $metadata['name'];
	106	+ }
	107	+ if ( ! empty( $metadata['preferredUsername'] ) ) {
	108	+ $username = $metadata['preferredUsername'];
	109	+ }
73	110
74		- $actor = Remote_Actors::get_actor( $post );
	111	+ $url = isset( $metadata['url'] ) ? object_to_uri( $metadata['url'] ) : object_to_uri( $metadata['id'] );
75	112
76		- if ( \is_wp_error( $actor ) ) {
77		- return $result[0];
	113	+ return \sprintf( '<a rel="mention" class="u-url mention" href="%s">@<span>%s</span></a>', esc_url( $url ), esc_html( $username ) );
78	114	}
79	115
80		- $username = $actor->get_preferred_username() ?: $actor->get_name() ?: Sanitize::webfinger( $result[0] );
81		- $url = object_to_uri( $actor->get_url() ?: $actor->get_id() );
82		-
83		- return \sprintf( '<a rel="mention" class="u-url mention" href="%1$s">@%2$s</a>', \esc_url( $url ), \esc_html( $username ) );
	116	+ return $result[0];
84	117	}
85	118
86	119	/**
87		- * Get the Inboxes for the mentioned Actors.
	120	+ * Get the Inboxes for the mentioned Actors
88	121	*
89		- * @param array $mentioned The list of Actors that were mentioned.
	122	+ * @param array $mentioned The list of Actors that were mentioned
90	123	*
91		- * @return array The list of Inboxes.
	124	+ * @return array The list of Inboxes
92	125	*/
93	126	public static function get_inboxes( $mentioned ) {
94	127	$inboxes = array();
95	128
		@@ -95,9 +128,9 @@
95	128
96	129	foreach ( $mentioned as $actor ) {
97	130	$inbox = self::get_inbox_by_mentioned_actor( $actor );
98	131
99		- if ( ! \is_wp_error( $inbox ) && $inbox ) {
	132	+ if ( ! is_wp_error( $inbox ) && $inbox ) {
100	133	$inboxes[] = $inbox;
101	134	}
102	135	}
103	136
		@@ -104,13 +137,13 @@
104	137	return $inboxes;
105	138	}
106	139
107	140	/**
108		- * Get the inbox from the Remote-Profile of a mentioned Actor.
	141	+ * Get the inbox from the Remote-Profile of a mentioned Actor
109	142	*
110		- * @param string $actor The Actor URL.
	143	+ * @param string $actor The Actor-URL
111	144	*
112		- * @return string|\WP_Error The Inbox-URL or WP_Error if not found.
	145	+ * @return string The Inbox-URL
113	146	*/
114	147	public static function get_inbox_by_mentioned_actor( $actor ) {
115	148	$metadata = get_remote_metadata_by_actor( $actor );
116	149
		@@ -117,9 +150,9 @@
117	150	if ( \is_wp_error( $metadata ) ) {
118	151	return $metadata;
119	152	}
120	153
121		- if ( isset( $metadata['endpoints']['sharedInbox'] ) ) {
	154	+ if ( isset( $metadata['endpoints'] ) && isset( $metadata['endpoints']['sharedInbox'] ) ) {
122	155	return $metadata['endpoints']['sharedInbox'];
123	156	}
124	157
125	158	if ( \array_key_exists( 'inbox', $metadata ) ) {
		@@ -125,26 +158,26 @@
125	158	if ( \array_key_exists( 'inbox', $metadata ) ) {
126	159	return $metadata['inbox'];
127	160	}
128	161
129		- return new \WP_Error( 'activitypub_no_inbox', \__( 'No "Inbox" found', 'activitypub' ), $metadata );
	162	+ return new WP_Error( 'activitypub_no_inbox', \__( 'No "Inbox" found', 'activitypub' ), $metadata );
130	163	}
131	164
132	165	/**
133	166	* Extract the mentions from the post_content.
134	167	*
135		- * @param array $mentions The already found mentions.
	168	+ * @param array $mentions The already found mentions.
136	169	* @param string $post_content The post content.
137	170	*
138		- * @return array The discovered mentions.
	171	+ * @return mixed The discovered mentions.
139	172	*/
140	173	public static function extract_mentions( $mentions, $post_content ) {
141	174	\preg_match_all( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/i', $post_content, $matches );
142	175	foreach ( $matches[0] as $match ) {
143	176	$link = Webfinger::resolve( $match );
144		- if ( ! \is_wp_error( $link ) ) {
	177	+ if ( ! is_wp_error( $link ) ) {
145	178	$mentions[ $match ] = $link;
146	179	}
147	180	}
148		- return \array_unique( $mentions );
	181	+ return $mentions;
149	182	}
150	183	}