| 1 |
<?php |
| 2 |
namespace Activitypub\Transformer; |
| 3 |
|
| 4 |
use WP_Post; |
| 5 |
use Activitypub\Shortcodes; |
| 6 |
use Activitypub\Model\Blog; |
| 7 |
use Activitypub\Transformer\Base; |
| 8 |
use Activitypub\Collection\Users; |
| 9 |
|
| 10 |
use function Activitypub\esc_hashtag; |
| 11 |
use function Activitypub\is_single_user; |
| 12 |
use function Activitypub\get_enclosures; |
| 13 |
use function Activitypub\get_rest_url_by_path; |
| 14 |
use function Activitypub\site_supports_blocks; |
| 15 |
|
| 16 |
/** |
| 17 |
* WordPress Post Transformer |
| 18 |
* |
| 19 |
* The Post Transformer is responsible for transforming a WP_Post object into different other |
| 20 |
* Object-Types. |
| 21 |
* |
| 22 |
* Currently supported are: |
| 23 |
* |
| 24 |
* - Activitypub\Activity\Base_Object |
| 25 |
*/ |
| 26 |
class Post extends Base { |
| 27 |
/** |
| 28 |
* Returns the ID of the WordPress Post. |
| 29 |
* |
| 30 |
* @return int The ID of the WordPress Post |
| 31 |
*/ |
| 32 |
public function get_wp_user_id() { |
| 33 |
return $this->wp_object->post_author; |
| 34 |
} |
| 35 |
|
| 36 |
/** |
| 37 |
* Change the User-ID of the WordPress Post. |
| 38 |
* |
| 39 |
* @return int The User-ID of the WordPress Post |
| 40 |
*/ |
| 41 |
public function change_wp_user_id( $user_id ) { |
| 42 |
$this->wp_object->post_author = $user_id; |
| 43 |
|
| 44 |
return $this; |
| 45 |
} |
| 46 |
|
| 47 |
/** |
| 48 |
* Transforms the WP_Post object to an ActivityPub Object |
| 49 |
* |
| 50 |
* @see \Activitypub\Activity\Base_Object |
| 51 |
* |
| 52 |
* @return \Activitypub\Activity\Base_Object The ActivityPub Object |
| 53 |
*/ |
| 54 |
public function to_object() { |
| 55 |
$post = $this->wp_object; |
| 56 |
$object = parent::to_object(); |
| 57 |
|
| 58 |
$published = \strtotime( $post->post_date_gmt ); |
| 59 |
|
| 60 |
$object->set_published( \gmdate( 'Y-m-d\TH:i:s\Z', $published ) ); |
| 61 |
|
| 62 |
$updated = \strtotime( $post->post_modified_gmt ); |
| 63 |
|
| 64 |
if ( $updated > $published ) { |
| 65 |
$object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', $updated ) ); |
| 66 |
} |
| 67 |
|
| 68 |
$object->set_content_map( |
| 69 |
array( |
| 70 |
$this->get_locale() => $this->get_content(), |
| 71 |
) |
| 72 |
); |
| 73 |
$path = sprintf( 'actors/%d/followers', intval( $post->post_author ) ); |
| 74 |
|
| 75 |
$object->set_to( |
| 76 |
array( |
| 77 |
'https://www.w3.org/ns/activitystreams#Public', |
| 78 |
get_rest_url_by_path( $path ), |
| 79 |
) |
| 80 |
); |
| 81 |
|
| 82 |
return $object; |
| 83 |
} |
| 84 |
|
| 85 |
/** |
| 86 |
* Returns the ID of the Post. |
| 87 |
* |
| 88 |
* @return string The Posts ID. |
| 89 |
*/ |
| 90 |
public function get_id() { |
| 91 |
return $this->get_url(); |
| 92 |
} |
| 93 |
|
| 94 |
/** |
| 95 |
* Returns the URL of the Post. |
| 96 |
* |
| 97 |
* @return string The Posts URL. |
| 98 |
*/ |
| 99 |
public function get_url() { |
| 100 |
$post = $this->wp_object; |
| 101 |
|
| 102 |
if ( 'trash' === get_post_status( $post ) ) { |
| 103 |
$permalink = \get_post_meta( $post->ID, 'activitypub_canonical_url', true ); |
| 104 |
} else { |
| 105 |
$permalink = \get_permalink( $post ); |
| 106 |
} |
| 107 |
|
| 108 |
return \esc_url( $permalink ); |
| 109 |
} |
| 110 |
|
| 111 |
/** |
| 112 |
* Returns the User-URL of the Author of the Post. |
| 113 |
* |
| 114 |
* If `single_user` mode is enabled, the URL of the Blog-User is returned. |
| 115 |
* |
| 116 |
* @return string The User-URL. |
| 117 |
*/ |
| 118 |
protected function get_attributed_to() { |
| 119 |
$blog_user = new Blog(); |
| 120 |
|
| 121 |
if ( is_single_user() ) { |
| 122 |
return $blog_user->get_url(); |
| 123 |
} |
| 124 |
|
| 125 |
$user = Users::get_by_id( $this->wp_object->post_author ); |
| 126 |
|
| 127 |
if ( $user && ! is_wp_error( $user ) ) { |
| 128 |
return $user->get_url(); |
| 129 |
} |
| 130 |
|
| 131 |
return $blog_user->get_url(); |
| 132 |
} |
| 133 |
|
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/** |
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* Generates all Media Attachments for a Post. |
| 136 |
* |
| 137 |
* @return array The Attachments. |
| 138 |
*/ |
| 139 |
protected function get_attachment() { |
| 140 |
// Once upon a time we only supported images, but we now support audio/video as well. |
| 141 |
// We maintain the image-centric naming for backwards compatibility. |
| 142 |
$max_media = \intval( |
| 143 |
\apply_filters( |
| 144 |
'activitypub_max_image_attachments', |
| 145 |
\get_option( 'activitypub_max_image_attachments', ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS ) |
| 146 |
) |
| 147 |
); |
| 148 |
|
| 149 |
$media = array( |
| 150 |
'audio' => array(), |
| 151 |
'video' => array(), |
| 152 |
'image' => array(), |
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); |
| 154 |
$id = $this->wp_object->ID; |
| 155 |
|
| 156 |
// list post thumbnail first if this post has one |
| 157 |
if ( \function_exists( 'has_post_thumbnail' ) && \has_post_thumbnail( $id ) ) { |
| 158 |
$media['image'][] = array( 'id' => \get_post_thumbnail_id( $id ) ); |
| 159 |
} |
| 160 |
|
| 161 |
$media = $this->get_enclosures( $media ); |
| 162 |
|
| 163 |
if ( site_supports_blocks() && \has_blocks( $this->wp_object->post_content ) ) { |
| 164 |
$media = $this->get_block_attachments( $media, $max_media ); |
| 165 |
} else { |
| 166 |
$media = $this->get_classic_editor_images( $media, $max_media ); |
| 167 |
} |
| 168 |
|
| 169 |
$media = self::filter_media_by_object_type( $media, \get_post_format( $this->wp_object ), $this->wp_object ); |
| 170 |
$unique_ids = \array_unique( \array_column( $media, 'id' ) ); |
| 171 |
$media = \array_intersect_key( $media, $unique_ids ); |
| 172 |
$media = \array_slice( $media, 0, $max_media ); |
| 173 |
|
| 174 |
return \array_filter( \array_map( array( self::class, 'wp_attachment_to_activity_attachment' ), $media ) ); |
| 175 |
} |
| 176 |
|
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/** |
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* Get media attachments from blocks. They will be formatted as ActivityPub attachments, not as WP attachments. |
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* |
| 180 |
* @param array $media The media array grouped by type. |
| 181 |
* @param int $max_media The maximum number of attachments to return. |
| 182 |
* |
| 183 |
* @return array The attachments. |
| 184 |
*/ |
| 185 |
protected function get_block_attachments( $media, $max_media ) { |
| 186 |
// max media can't be negative or zero |
| 187 |
if ( $max_media <= 0 ) { |
| 188 |
return array(); |
| 189 |
} |
| 190 |
|
| 191 |
$blocks = \parse_blocks( $this->wp_object->post_content ); |
| 192 |
$media = self::get_media_from_blocks( $blocks, $media ); |
| 193 |
|
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return $media; |
| 195 |
} |
| 196 |
|
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/** |
| 198 |
* Get image attachments from the classic editor. |
| 199 |
* This is imperfect as the contained images aren't necessarily the |
| 200 |
* same as the attachments. |
| 201 |
* |
| 202 |
* @param int $max_images The maximum number of images to return. |
| 203 |
* |
| 204 |
* @return array The attachment IDs. |
| 205 |
*/ |
| 206 |
protected function get_classic_editor_image_attachments( $max_images ) { |
| 207 |
// max images can't be negative or zero |
| 208 |
if ( $max_images <= 0 ) { |
| 209 |
return array(); |
| 210 |
} |
| 211 |
|
| 212 |
$images = array(); |
| 213 |
$query = new \WP_Query( |
| 214 |
array( |
| 215 |
'post_parent' => $this->wp_object->ID, |
| 216 |
'post_status' => 'inherit', |
| 217 |
'post_type' => 'attachment', |
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'post_mime_type' => 'image', |
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'order' => 'ASC', |
| 220 |
'orderby' => 'menu_order ID', |
| 221 |
'posts_per_page' => $max_images, |
| 222 |
) |
| 223 |
); |
| 224 |
|
| 225 |
foreach ( $query->get_posts() as $attachment ) { |
| 226 |
if ( ! \in_array( $attachment->ID, $images, true ) ) { |
| 227 |
$images[] = array( 'id' => $attachment->ID ); |
| 228 |
} |
| 229 |
} |
| 230 |
|
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return $images; |
| 232 |
} |
| 233 |
|
| 234 |
/** |
| 235 |
* Get image embeds from the classic editor by parsing HTML. |
| 236 |
* |
| 237 |
* @param int $max_images The maximum number of images to return. |
| 238 |
* |
| 239 |
* @return array The attachments. |
| 240 |
*/ |
| 241 |
protected function get_classic_editor_image_embeds( $max_images ) { |
| 242 |
// if someone calls that function directly, bail |
| 243 |
if ( ! \class_exists( '\WP_HTML_Tag_Processor' ) ) { |
| 244 |
return array(); |
| 245 |
} |
| 246 |
|
| 247 |
// max images can't be negative or zero |
| 248 |
if ( $max_images <= 0 ) { |
| 249 |
return array(); |
| 250 |
} |
| 251 |
|
| 252 |
$images = array(); |
| 253 |
$base = \wp_get_upload_dir()['baseurl']; |
| 254 |
$content = \get_post_field( 'post_content', $this->wp_object ); |
| 255 |
$tags = new \WP_HTML_Tag_Processor( $content ); |
| 256 |
|
| 257 |
// This linter warning is a false positive - we have to |
| 258 |
// re-count each time here as we modify $images. |
| 259 |
// phpcs:ignore Squiz.PHP.DisallowSizeFunctionsInLoops.Found |
| 260 |
while ( $tags->next_tag( 'img' ) && ( \count( $images ) <= $max_images ) ) { |
| 261 |
$src = $tags->get_attribute( 'src' ); |
| 262 |
|
| 263 |
// If the img source is in our uploads dir, get the |
| 264 |
// associated ID. Note: if there's a -500x500 |
| 265 |
// type suffix, we remove it, but we try the original |
| 266 |
// first in case the original image is actually called |
| 267 |
// that. Likewise, we try adding the -scaled suffix for |
| 268 |
// the case that this is a small version of an image |
| 269 |
// that was big enough to get scaled down on upload: |
| 270 |
// https://make.wordpress.org/core/2019/10/09/introducing-handling-of-big-images-in-wordpress-5-3/ |
| 271 |
if ( null !== $src && \str_starts_with( $src, $base ) ) { |
| 272 |
$img_id = \attachment_url_to_postid( $src ); |
| 273 |
|
| 274 |
if ( 0 === $img_id ) { |
| 275 |
$count = 0; |
| 276 |
$src = preg_replace( '/-(?:\d+x\d+)(\.[a-zA-Z]+)$/', '$1', $src, 1, $count ); |
| 277 |
if ( $count > 0 ) { |
| 278 |
$img_id = \attachment_url_to_postid( $src ); |
| 279 |
} |
| 280 |
} |
| 281 |
|
| 282 |
if ( 0 === $img_id ) { |
| 283 |
$src = preg_replace( '/(\.[a-zA-Z]+)$/', '-scaled$1', $src ); |
| 284 |
$img_id = \attachment_url_to_postid( $src ); |
| 285 |
} |
| 286 |
|
| 287 |
if ( 0 !== $img_id ) { |
| 288 |
$images[] = array( |
| 289 |
'id' => $img_id, |
| 290 |
'alt' => $tags->get_attribute( 'alt' ), |
| 291 |
); |
| 292 |
} |
| 293 |
} |
| 294 |
} |
| 295 |
|
| 296 |
return $images; |
| 297 |
} |
| 298 |
|
| 299 |
/** |
| 300 |
* Get post images from the classic editor. |
| 301 |
* Note that audio/video attachments are only supported in the block editor. |
| 302 |
* |
| 303 |
* @param array $media The media array grouped by type. |
| 304 |
* @param int $max_images The maximum number of images to return. |
| 305 |
* |
| 306 |
* @return array The attachments. |
| 307 |
*/ |
| 308 |
protected function get_classic_editor_images( $media, $max_images ) { |
| 309 |
// max images can't be negative or zero |
| 310 |
if ( $max_images <= 0 ) { |
| 311 |
return array(); |
| 312 |
} |
| 313 |
|
| 314 |
if ( \count( $media['image'] ) <= $max_images ) { |
| 315 |
if ( \class_exists( '\WP_HTML_Tag_Processor' ) ) { |
| 316 |
$media['image'] = \array_merge( $media['image'], $this->get_classic_editor_image_embeds( $max_images ) ); |
| 317 |
} else { |
| 318 |
$media['image'] = \array_merge( $media['image'], $this->get_classic_editor_image_attachments( $max_images ) ); |
| 319 |
} |
| 320 |
} |
| 321 |
|
| 322 |
return $media; |
| 323 |
} |
| 324 |
|
| 325 |
/** |
| 326 |
* Get enclosures for a post. |
| 327 |
* |
| 328 |
* @param array $media The media array grouped by type. |
| 329 |
* |
| 330 |
* @return array The media array extended with enclosures. |
| 331 |
*/ |
| 332 |
public function get_enclosures( $media ) { |
| 333 |
$enclosures = get_enclosures( $this->wp_object->ID ); |
| 334 |
|
| 335 |
if ( ! $enclosures ) { |
| 336 |
return $media; |
| 337 |
} |
| 338 |
|
| 339 |
foreach ( $enclosures as $enclosure ) { |
| 340 |
// check if URL is an attachment |
| 341 |
$attachment_id = \attachment_url_to_postid( $enclosure['url'] ); |
| 342 |
if ( $attachment_id ) { |
| 343 |
$enclosure['id'] = $attachment_id; |
| 344 |
$enclosure['url'] = \wp_get_attachment_url( $attachment_id ); |
| 345 |
$enclosure['mediaType'] = \get_post_mime_type( $attachment_id ); |
| 346 |
} |
| 347 |
|
| 348 |
$mime_type = $enclosure['mediaType']; |
| 349 |
$mime_type_parts = \explode( '/', $mime_type ); |
| 350 |
|
| 351 |
switch ( $mime_type_parts[0] ) { |
| 352 |
case 'image': |
| 353 |
$media['image'][] = $enclosure; |
| 354 |
break; |
| 355 |
case 'audio': |
| 356 |
$media['audio'][] = $enclosure; |
| 357 |
break; |
| 358 |
case 'video': |
| 359 |
$media['video'][] = $enclosure; |
| 360 |
break; |
| 361 |
} |
| 362 |
} |
| 363 |
|
| 364 |
return $media; |
| 365 |
} |
| 366 |
|
| 367 |
/** |
| 368 |
* Recursively get media IDs from blocks. |
| 369 |
* @param array $blocks The blocks to search for media IDs |
| 370 |
* @param array $media The media IDs to append new IDs to |
| 371 |
* @param int $max_media The maximum number of media to return. |
| 372 |
* |
| 373 |
* @return array The image IDs. |
| 374 |
*/ |
| 375 |
protected static function get_media_from_blocks( $blocks, $media ) { |
| 376 |
foreach ( $blocks as $block ) { |
| 377 |
// recurse into inner blocks |
| 378 |
if ( ! empty( $block['innerBlocks'] ) ) { |
| 379 |
$media = self::get_media_from_blocks( $block['innerBlocks'], $media ); |
| 380 |
} |
| 381 |
|
| 382 |
switch ( $block['blockName'] ) { |
| 383 |
case 'core/image': |
| 384 |
case 'core/cover': |
| 385 |
if ( ! empty( $block['attrs']['id'] ) ) { |
| 386 |
$alt = ''; |
| 387 |
$check = preg_match( '/<img.*?alt\s*=\s*([\"\'])(.*?)\1.*>/i', $block['innerHTML'], $match ); |
| 388 |
|
| 389 |
if ( $check ) { |
| 390 |
$alt = $match[2]; |
| 391 |
} |
| 392 |
|
| 393 |
$media['image'][] = array( |
| 394 |
'id' => $block['attrs']['id'], |
| 395 |
'alt' => $alt, |
| 396 |
); |
| 397 |
} |
| 398 |
break; |
| 399 |
case 'core/audio': |
| 400 |
if ( ! empty( $block['attrs']['id'] ) ) { |
| 401 |
$media['audio'][] = array( 'id' => $block['attrs']['id'] ); |
| 402 |
} |
| 403 |
break; |
| 404 |
case 'core/video': |
| 405 |
case 'videopress/video': |
| 406 |
if ( ! empty( $block['attrs']['id'] ) ) { |
| 407 |
$media['video'][] = array( 'id' => $block['attrs']['id'] ); |
| 408 |
} |
| 409 |
break; |
| 410 |
case 'jetpack/slideshow': |
| 411 |
case 'jetpack/tiled-gallery': |
| 412 |
if ( ! empty( $block['attrs']['ids'] ) ) { |
| 413 |
$media['image'] = array_merge( |
| 414 |
$media['image'], |
| 415 |
array_map( |
| 416 |
function ( $id ) { |
| 417 |
return array( 'id' => $id ); |
| 418 |
}, |
| 419 |
$block['attrs']['ids'] |
| 420 |
) |
| 421 |
); |
| 422 |
} |
| 423 |
break; |
| 424 |
case 'jetpack/image-compare': |
| 425 |
if ( ! empty( $block['attrs']['beforeImageId'] ) ) { |
| 426 |
$media['image'][] = array( 'id' => $block['attrs']['beforeImageId'] ); |
| 427 |
} |
| 428 |
if ( ! empty( $block['attrs']['afterImageId'] ) ) { |
| 429 |
$media['image'][] = array( 'id' => $block['attrs']['afterImageId'] ); |
| 430 |
} |
| 431 |
break; |
| 432 |
} |
| 433 |
} |
| 434 |
|
| 435 |
return $media; |
| 436 |
} |
| 437 |
|
| 438 |
/** |
| 439 |
* Filter media IDs by object type. |
| 440 |
* |
| 441 |
* @param array $media The media array grouped by type. |
| 442 |
* @param string $type The object type. |
| 443 |
* |
| 444 |
* @return array The filtered media IDs. |
| 445 |
*/ |
| 446 |
protected static function filter_media_by_object_type( $media, $type, $wp_object ) { |
| 447 |
$type = \apply_filters( 'filter_media_by_object_type', \strtolower( $type ), $wp_object ); |
| 448 |
|
| 449 |
if ( ! empty( $media[ $type ] ) ) { |
| 450 |
return $media[ $type ]; |
| 451 |
} |
| 452 |
|
| 453 |
return array_filter( array_merge( array(), ...array_values( $media ) ) ); |
| 454 |
} |
| 455 |
|
| 456 |
/** |
| 457 |
* Converts a WordPress Attachment to an ActivityPub Attachment. |
| 458 |
* |
| 459 |
* @param array $media The Attachment array. |
| 460 |
* |
| 461 |
* @return array The ActivityPub Attachment. |
| 462 |
*/ |
| 463 |
public static function wp_attachment_to_activity_attachment( $media ) { |
| 464 |
if ( ! isset( $media['id'] ) ) { |
| 465 |
return $media; |
| 466 |
} |
| 467 |
|
| 468 |
$id = $media['id']; |
| 469 |
$attachment = array(); |
| 470 |
$mime_type = \get_post_mime_type( $id ); |
| 471 |
$mime_type_parts = \explode( '/', $mime_type ); |
| 472 |
// switching on image/audio/video |
| 473 |
switch ( $mime_type_parts[0] ) { |
| 474 |
case 'image': |
| 475 |
$image_size = 'large'; |
| 476 |
|
| 477 |
/** |
| 478 |
* Filter the image URL returned for each post. |
| 479 |
* |
| 480 |
* @param array|false $thumbnail The image URL, or false if no image is available. |
| 481 |
* @param int $id The attachment ID. |
| 482 |
* @param string $image_size The image size to retrieve. Set to 'large' by default. |
| 483 |
*/ |
| 484 |
$thumbnail = apply_filters( |
| 485 |
'activitypub_get_image', |
| 486 |
self::get_wordpress_attachment( $id, $image_size ), |
| 487 |
$id, |
| 488 |
$image_size |
| 489 |
); |
| 490 |
|
| 491 |
if ( $thumbnail ) { |
| 492 |
$image = array( |
| 493 |
'type' => 'Image', |
| 494 |
'url' => \esc_url( $thumbnail[0] ), |
| 495 |
'mediaType' => \esc_attr( $mime_type ), |
| 496 |
); |
| 497 |
|
| 498 |
if ( ! empty( $media['alt'] ) ) { |
| 499 |
$image['name'] = \wp_strip_all_tags( \html_entity_decode( $media['alt'] ) ); |
| 500 |
} else { |
| 501 |
$alt = \get_post_meta( $id, '_wp_attachment_image_alt', true ); |
| 502 |
if ( $alt ) { |
| 503 |
$image['name'] = \wp_strip_all_tags( \html_entity_decode( $alt ) ); |
| 504 |
} |
| 505 |
} |
| 506 |
|
| 507 |
$attachment = $image; |
| 508 |
} |
| 509 |
break; |
| 510 |
|
| 511 |
case 'audio': |
| 512 |
case 'video': |
| 513 |
$attachment = array( |
| 514 |
'type' => 'Document', |
| 515 |
'mediaType' => \esc_attr( $mime_type ), |
| 516 |
'url' => \esc_url( \wp_get_attachment_url( $id ) ), |
| 517 |
'name' => \esc_attr( \get_the_title( $id ) ), |
| 518 |
); |
| 519 |
$meta = wp_get_attachment_metadata( $id ); |
| 520 |
// height and width for videos |
| 521 |
if ( isset( $meta['width'] ) && isset( $meta['height'] ) ) { |
| 522 |
$attachment['width'] = \esc_attr( $meta['width'] ); |
| 523 |
$attachment['height'] = \esc_attr( $meta['height'] ); |
| 524 |
} |
| 525 |
// @todo: add `icon` support for audio/video attachments. Maybe use post thumbnail? |
| 526 |
break; |
| 527 |
} |
| 528 |
|
| 529 |
return \apply_filters( 'activitypub_attachment', $attachment, $id ); |
| 530 |
} |
| 531 |
|
| 532 |
/** |
| 533 |
* Return details about an image attachment. |
| 534 |
* |
| 535 |
* @param int $id The attachment ID. |
| 536 |
* @param string $image_size The image size to retrieve. Set to 'large' by default. |
| 537 |
* |
| 538 |
* @return array|false Array of image data, or boolean false if no image is available. |
| 539 |
*/ |
| 540 |
protected static function get_wordpress_attachment( $id, $image_size = 'large' ) { |
| 541 |
/** |
| 542 |
* Hook into the image retrieval process. Before image retrieval. |
| 543 |
* |
| 544 |
* @param int $id The attachment ID. |
| 545 |
* @param string $image_size The image size to retrieve. Set to 'large' by default. |
| 546 |
*/ |
| 547 |
do_action( 'activitypub_get_image_pre', $id, $image_size ); |
| 548 |
|
| 549 |
$image = \wp_get_attachment_image_src( $id, $image_size ); |
| 550 |
|
| 551 |
/** |
| 552 |
* Hook into the image retrieval process. After image retrieval. |
| 553 |
* |
| 554 |
* @param int $id The attachment ID. |
| 555 |
* @param string $image_size The image size to retrieve. Set to 'large' by default. |
| 556 |
*/ |
| 557 |
do_action( 'activitypub_get_image_post', $id, $image_size ); |
| 558 |
|
| 559 |
return $image; |
| 560 |
} |
| 561 |
|
| 562 |
/** |
| 563 |
* Returns the ActivityStreams 2.0 Object-Type for a Post based on the |
| 564 |
* settings and the Post-Type. |
| 565 |
* |
| 566 |
* @see https://www.w3.org/TR/activitystreams-vocabulary/#activity-types |
| 567 |
* |
| 568 |
* @return string The Object-Type. |
| 569 |
*/ |
| 570 |
protected function get_type() { |
| 571 |
$post_format_setting = \get_option( 'activitypub_object_type', ACTIVITYPUB_DEFAULT_OBJECT_TYPE ); |
| 572 |
|
| 573 |
if ( 'wordpress-post-format' !== $post_format_setting ) { |
| 574 |
return \ucfirst( $post_format_setting ); |
| 575 |
} |
| 576 |
|
| 577 |
$has_title = post_type_supports( $this->wp_object->post_type, 'title' ); |
| 578 |
|
| 579 |
if ( ! $has_title ) { |
| 580 |
return 'Note'; |
| 581 |
} |
| 582 |
|
| 583 |
// Default to Article. |
| 584 |
$object_type = 'Note'; |
| 585 |
$post_format = 'standard'; |
| 586 |
|
| 587 |
if ( \get_theme_support( 'post-formats' ) ) { |
| 588 |
$post_format = \get_post_format( $this->wp_object ); |
| 589 |
} |
| 590 |
|
| 591 |
$post_type = \get_post_type( $this->wp_object ); |
| 592 |
switch ( $post_type ) { |
| 593 |
case 'post': |
| 594 |
switch ( $post_format ) { |
| 595 |
case 'standard': |
| 596 |
case '': |
| 597 |
$object_type = 'Article'; |
| 598 |
break; |
| 599 |
default: |
| 600 |
$object_type = 'Note'; |
| 601 |
break; |
| 602 |
} |
| 603 |
break; |
| 604 |
case 'page': |
| 605 |
$object_type = 'Page'; |
| 606 |
break; |
| 607 |
default: |
| 608 |
$object_type = 'Note'; |
| 609 |
break; |
| 610 |
} |
| 611 |
|
| 612 |
return $object_type; |
| 613 |
} |
| 614 |
|
| 615 |
/** |
| 616 |
* Returns a list of Mentions, used in the Post. |
| 617 |
* |
| 618 |
* @see https://docs.joinmastodon.org/spec/activitypub/#Mention |
| 619 |
* |
| 620 |
* @return array The list of Mentions. |
| 621 |
*/ |
| 622 |
protected function get_cc() { |
| 623 |
$cc = array(); |
| 624 |
|
| 625 |
$mentions = $this->get_mentions(); |
| 626 |
if ( $mentions ) { |
| 627 |
foreach ( $mentions as $url ) { |
| 628 |
$cc[] = $url; |
| 629 |
} |
| 630 |
} |
| 631 |
|
| 632 |
return $cc; |
| 633 |
} |
| 634 |
|
| 635 |
|
| 636 |
public function get_audience() { |
| 637 |
if ( is_single_user() ) { |
| 638 |
return null; |
| 639 |
} else { |
| 640 |
$blog = new Blog(); |
| 641 |
return $blog->get_id(); |
| 642 |
} |
| 643 |
} |
| 644 |
|
| 645 |
/** |
| 646 |
* Returns a list of Tags, used in the Post. |
| 647 |
* |
| 648 |
* This includes Hash-Tags and Mentions. |
| 649 |
* |
| 650 |
* @return array The list of Tags. |
| 651 |
*/ |
| 652 |
protected function get_tag() { |
| 653 |
$tags = array(); |
| 654 |
|
| 655 |
$post_tags = \get_the_tags( $this->wp_object->ID ); |
| 656 |
if ( $post_tags ) { |
| 657 |
foreach ( $post_tags as $post_tag ) { |
| 658 |
$tag = array( |
| 659 |
'type' => 'Hashtag', |
| 660 |
'href' => \esc_url( \get_tag_link( $post_tag->term_id ) ), |
| 661 |
'name' => esc_hashtag( $post_tag->name ), |
| 662 |
); |
| 663 |
$tags[] = $tag; |
| 664 |
} |
| 665 |
} |
| 666 |
|
| 667 |
$mentions = $this->get_mentions(); |
| 668 |
if ( $mentions ) { |
| 669 |
foreach ( $mentions as $mention => $url ) { |
| 670 |
$tag = array( |
| 671 |
'type' => 'Mention', |
| 672 |
'href' => \esc_url( $url ), |
| 673 |
'name' => \esc_html( $mention ), |
| 674 |
); |
| 675 |
$tags[] = $tag; |
| 676 |
} |
| 677 |
} |
| 678 |
|
| 679 |
return $tags; |
| 680 |
} |
| 681 |
|
| 682 |
/** |
| 683 |
* Returns the summary for the ActivityPub Item. |
| 684 |
* |
| 685 |
* The summary will be generated based on the user settings and only if the |
| 686 |
* object type is not set to `note`. |
| 687 |
* |
| 688 |
* @return string|null The summary or null if the object type is `note`. |
| 689 |
*/ |
| 690 |
protected function get_summary() { |
| 691 |
if ( 'Note' === $this->get_type() ) { |
| 692 |
return null; |
| 693 |
} |
| 694 |
|
| 695 |
$content = \get_post_field( 'post_content', $this->wp_object->ID ); |
| 696 |
$content = \html_entity_decode( $content ); |
| 697 |
$content = \wp_strip_all_tags( $content ); |
| 698 |
$content = \trim( $content ); |
| 699 |
$content = \preg_replace( '/\R+/m', "\n\n", $content ); |
| 700 |
$content = \preg_replace( '/[\r\t]/', '', $content ); |
| 701 |
|
| 702 |
$excerpt_more = \apply_filters( 'activitypub_excerpt_more', '[...]' ); |
| 703 |
$length = 500; |
| 704 |
$length = $length - strlen( $excerpt_more ); |
| 705 |
|
| 706 |
if ( \strlen( $content ) > $length ) { |
| 707 |
$content = \wordwrap( $content, $length, '</activitypub-summary>' ); |
| 708 |
$content = \explode( '</activitypub-summary>', $content, 2 ); |
| 709 |
$content = $content[0]; |
| 710 |
} |
| 711 |
|
| 712 |
return $content . ' ' . $excerpt_more; |
| 713 |
} |
| 714 |
|
| 715 |
/** |
| 716 |
* Returns the title for the ActivityPub Item. |
| 717 |
* |
| 718 |
* The title will be generated based on the user settings and only if the |
| 719 |
* object type is not set to `note`. |
| 720 |
* |
| 721 |
* @return string|null The title or null if the object type is `note`. |
| 722 |
*/ |
| 723 |
protected function get_name() { |
| 724 |
if ( 'Note' === $this->get_type() ) { |
| 725 |
return null; |
| 726 |
} |
| 727 |
|
| 728 |
$title = \get_the_title( $this->wp_object->ID ); |
| 729 |
|
| 730 |
if ( $title ) { |
| 731 |
return \wp_strip_all_tags( |
| 732 |
\html_entity_decode( |
| 733 |
$title |
| 734 |
) |
| 735 |
); |
| 736 |
} |
| 737 |
|
| 738 |
return null; |
| 739 |
} |
| 740 |
|
| 741 |
/** |
| 742 |
* Returns the content for the ActivityPub Item. |
| 743 |
* |
| 744 |
* The content will be generated based on the user settings. |
| 745 |
* |
| 746 |
* @return string The content. |
| 747 |
*/ |
| 748 |
protected function get_content() { |
| 749 |
global $post; |
| 750 |
|
| 751 |
/** |
| 752 |
* Provides an action hook so plugins can add their own hooks/filters before AP content is generated. |
| 753 |
* |
| 754 |
* Example: if a plugin adds a filter to `the_content` to add a button to the end of posts, it can also remove that filter here. |
| 755 |
* |
| 756 |
* @param WP_Post $post The post object. |
| 757 |
*/ |
| 758 |
do_action( 'activitypub_before_get_content', $post ); |
| 759 |
|
| 760 |
add_filter( 'render_block_core/embed', array( self::class, 'revert_embed_links' ), 10, 2 ); |
| 761 |
|
| 762 |
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited |
| 763 |
$post = $this->wp_object; |
| 764 |
$content = $this->get_post_content_template(); |
| 765 |
|
| 766 |
// Register our shortcodes just in time. |
| 767 |
Shortcodes::register(); |
| 768 |
// Fill in the shortcodes. |
| 769 |
setup_postdata( $post ); |
| 770 |
$content = do_shortcode( $content ); |
| 771 |
wp_reset_postdata(); |
| 772 |
|
| 773 |
$content = \wpautop( $content ); |
| 774 |
$content = \preg_replace( '/[\n\r\t]/', '', $content ); |
| 775 |
$content = \trim( $content ); |
| 776 |
|
| 777 |
$content = \apply_filters( 'activitypub_the_content', $content, $post ); |
| 778 |
|
| 779 |
// Don't need these any more, should never appear in a post. |
| 780 |
Shortcodes::unregister(); |
| 781 |
|
| 782 |
return $content; |
| 783 |
} |
| 784 |
|
| 785 |
/** |
| 786 |
* Gets the template to use to generate the content of the activitypub item. |
| 787 |
* |
| 788 |
* @return string The Template. |
| 789 |
*/ |
| 790 |
protected function get_post_content_template() { |
| 791 |
$type = \get_option( 'activitypub_post_content_type', 'content' ); |
| 792 |
|
| 793 |
switch ( $type ) { |
| 794 |
case 'excerpt': |
| 795 |
$template = "[ap_excerpt]\n\n[ap_permalink type=\"html\"]"; |
| 796 |
break; |
| 797 |
case 'title': |
| 798 |
$template = "<h2>[ap_title]</h2>\n\n[ap_permalink type=\"html\"]"; |
| 799 |
break; |
| 800 |
case 'content': |
| 801 |
$template = "[ap_content]\n\n[ap_permalink type=\"html\"]\n\n[ap_hashtags]"; |
| 802 |
break; |
| 803 |
default: |
| 804 |
$template = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT ); |
| 805 |
break; |
| 806 |
} |
| 807 |
|
| 808 |
$post_format_setting = \get_option( 'activitypub_object_type', ACTIVITYPUB_DEFAULT_OBJECT_TYPE ); |
| 809 |
|
| 810 |
if ( 'wordpress-post-format' === $post_format_setting ) { |
| 811 |
$template = '[ap_content]'; |
| 812 |
} |
| 813 |
|
| 814 |
return apply_filters( 'activitypub_object_content_template', $template, $this->wp_object ); |
| 815 |
} |
| 816 |
|
| 817 |
/** |
| 818 |
* Helper function to get the @-Mentions from the post content. |
| 819 |
* |
| 820 |
* @return array The list of @-Mentions. |
| 821 |
*/ |
| 822 |
protected function get_mentions() { |
| 823 |
return apply_filters( 'activitypub_extract_mentions', array(), $this->wp_object->post_content, $this->wp_object ); |
| 824 |
} |
| 825 |
|
| 826 |
/** |
| 827 |
* Returns the locale of the post. |
| 828 |
* |
| 829 |
* @return string The locale of the post. |
| 830 |
*/ |
| 831 |
public function get_locale() { |
| 832 |
$post_id = $this->wp_object->ID; |
| 833 |
$lang = \strtolower( \strtok( \get_locale(), '_-' ) ); |
| 834 |
|
| 835 |
/** |
| 836 |
* Filter the locale of the post. |
| 837 |
* |
| 838 |
* @param string $lang The locale of the post. |
| 839 |
* @param int $post_id The post ID. |
| 840 |
* @param WP_Post $post The post object. |
| 841 |
* |
| 842 |
* @return string The filtered locale of the post. |
| 843 |
*/ |
| 844 |
return apply_filters( 'activitypub_post_locale', $lang, $post_id, $this->wp_object ); |
| 845 |
} |
| 846 |
|
| 847 |
/** |
| 848 |
* Transform Embed blocks to block level link. |
| 849 |
* |
| 850 |
* Remote servers will simply drop iframe elements, rendering incomplete content. |
| 851 |
* |
| 852 |
* @see https://www.w3.org/TR/activitypub/#security-sanitizing-content |
| 853 |
* @see https://www.w3.org/wiki/ActivityPub/Primer/HTML |
| 854 |
* |
| 855 |
* @param string $block_content The block content (html) |
| 856 |
* @param object $block The block object |
| 857 |
* |
| 858 |
* @return string A block level link |
| 859 |
*/ |
| 860 |
public static function revert_embed_links( $block_content, $block ) { |
| 861 |
return '<p><a href="' . esc_url( $block['attrs']['url'] ) . '">' . $block['attrs']['url'] . '</a></p>'; |
| 862 |
} |
| 863 |
} |
| 864 |
|
