src/Model/Post/Media.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Model\Post;
  23
  24 use Friendica\Content\Text\BBCode;
  25 use Friendica\Core\Logger;
  26 use Friendica\Core\Protocol;
  27 use Friendica\Core\System;
  28 use Friendica\Database\Database;
  29 use Friendica\Database\DBA;
  30 use Friendica\DI;
  31 use Friendica\Model\Contact;
  32 use Friendica\Model\Item;
  33 use Friendica\Model\Photo;
  34 use Friendica\Model\Post;
  35 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  36 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  37 use Friendica\Util\Images;
  38 use Friendica\Util\Network;
  39 use Friendica\Util\ParseUrl;
  40 use Friendica\Util\Proxy;
  41 use Friendica\Util\Strings;
  42
  43 /**
  44  * Class Media
  45  *
  46  * This Model class handles media interactions.
  47  * This tables stores medias (images, videos, audio files) related to posts.
  48  */
  49 class Media
  50 {
  51         const UNKNOWN     = 0;
  52         const IMAGE       = 1;
  53         const VIDEO       = 2;
  54         const AUDIO       = 3;
  55         const TEXT        = 4;
  56         const APPLICATION = 5;
  57         const TORRENT     = 16;
  58         const HTML        = 17;
  59         const XML         = 18;
  60         const PLAIN       = 19;
  61         const ACTIVITY    = 20;
  62         const ACCOUNT     = 21;
  63         const DOCUMENT    = 128;
  64
  65         /**
  66          * Insert a post-media record
  67          *
  68          * @param array $media
  69          * @return void
  70          */
  71         public static function insert(array $media, bool $force = false)
  72         {
  73                 if (empty($media['url']) || empty($media['uri-id']) || !isset($media['type'])) {
  74                         Logger::warning('Incomplete media data', ['media' => $media]);
  75                         return;
  76                 }
  77
  78                 if (DBA::exists('post-media', ['uri-id' => $media['uri-id'], 'preview' => $media['url']])) {
  79                         Logger::info('Media already exists as preview', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  80                         return;
  81                 }
  82
  83                 // "document" has got the lowest priority. So when the same file is both attached as document
  84                 // and embedded as picture then we only store the picture or replace the document
  85                 $found = DBA::selectFirst('post-media', ['type'], ['uri-id' => $media['uri-id'], 'url' => $media['url']]);
  86                 if (!$force && !empty($found) && (($found['type'] != self::DOCUMENT) || ($media['type'] == self::DOCUMENT))) {
  87                         Logger::info('Media already exists', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  88                         return;
  89                 }
  90
  91                 $media = self::unsetEmptyFields($media);
  92                 $media = DI::dbaDefinition()->truncateFieldsForTable('post-media', $media);
  93
  94                 // We are storing as fast as possible to avoid duplicated network requests
  95                 // when fetching additional information for pictures and other content.
  96                 $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  97                 Logger::info('Stored media', ['result' => $result, 'media' => $media, 'callstack' => System::callstack()]);
  98                 $stored = $media;
  99
 100                 $media = self::fetchAdditionalData($media);
 101                 $media = self::unsetEmptyFields($media);
 102                 $media = DI::dbaDefinition()->truncateFieldsForTable('post-media', $media);
 103
 104                 if (array_diff_assoc($media, $stored)) {
 105                         $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
 106                         Logger::info('Updated media', ['result' => $result, 'media' => $media]);
 107                 } else {
 108                         Logger::info('Nothing to update', ['media' => $media]);
 109                 }
 110         }
 111
 112         /**
 113          * Remove empty media fields
 114          *
 115          * @param array $media
 116          * @return array cleaned media array
 117          */
 118         private static function unsetEmptyFields(array $media): array
 119         {
 120                 $fields = ['mimetype', 'height', 'width', 'size', 'preview', 'preview-height', 'preview-width', 'blurhash', 'description'];
 121                 foreach ($fields as $field) {
 122                         if (empty($media[$field])) {
 123                                 unset($media[$field]);
 124                         }
 125                 }
 126                 return $media;
 127         }
 128
 129         /**
 130          * Copy attachments from one uri-id to another
 131          *
 132          * @param integer $from_uri_id
 133          * @param integer $to_uri_id
 134          * @return void
 135          */
 136         public static function copy(int $from_uri_id, int $to_uri_id)
 137         {
 138                 $attachments = self::getByURIId($from_uri_id);
 139                 foreach ($attachments as $attachment) {
 140                         $attachment['uri-id'] = $to_uri_id;
 141                         self::insert($attachment);
 142                 }
 143         }
 144
 145         /**
 146          * Creates the "[attach]" element from the given attributes
 147          *
 148          * @param string $href
 149          * @param integer $length
 150          * @param string $type
 151          * @param string $title
 152          * @return string "[attach]" element
 153          */
 154         public static function getAttachElement(string $href, int $length, string $type, string $title = ''): string
 155         {
 156                 $media = self::fetchAdditionalData(['type' => self::DOCUMENT, 'url' => $href,
 157                         'size' => $length, 'mimetype' => $type, 'description' => $title]);
 158
 159                 return '[attach]href="' . $media['url'] . '" length="' . $media['size'] .
 160                         '" type="' . $media['mimetype'] . '" title="' . $media['description'] . '"[/attach]';
 161         }
 162
 163         /**
 164          * Fetch additional data for the provided media array
 165          *
 166          * @param array $media
 167          * @return array media array with additional data
 168          */
 169         public static function fetchAdditionalData(array $media): array
 170         {
 171                 if (Network::isLocalLink($media['url'])) {
 172                         $media = self::fetchLocalData($media);
 173                 }
 174
 175                 // Fetch the mimetype or size if missing.
 176                 if (empty($media['mimetype']) || empty($media['size'])) {
 177                         $timeout = DI::config()->get('system', 'xrd_timeout');
 178                         $curlResult = DI::httpClient()->head($media['url'], [HttpClientOptions::TIMEOUT => $timeout]);
 179
 180                         // Workaround for systems that can't handle a HEAD request
 181                         if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() == 405)) {
 182                                 $curlResult = DI::httpClient()->get($media['url'], HttpClientAccept::DEFAULT, [HttpClientOptions::TIMEOUT => $timeout]);
 183                         }
 184
 185                         if ($curlResult->isSuccess()) {
 186                                 if (empty($media['mimetype'])) {
 187                                         $media['mimetype'] = $curlResult->getHeader('Content-Type')[0] ?? '';
 188                                 }
 189                                 if (empty($media['size'])) {
 190                                         $media['size'] = (int)($curlResult->getHeader('Content-Length')[0] ?? 0);
 191                                 }
 192                         } else {
 193                                 Logger::notice('Could not fetch head', ['media' => $media]);
 194                         }
 195                 }
 196
 197                 $filetype = !empty($media['mimetype']) ? strtolower(current(explode('/', $media['mimetype']))) : '';
 198
 199                 if (($media['type'] == self::IMAGE) || ($filetype == 'image')) {
 200                         $imagedata = Images::getInfoFromURLCached($media['url']);
 201                         if ($imagedata) {
 202                                 $media['mimetype'] = $imagedata['mime'];
 203                                 $media['size'] = $imagedata['size'];
 204                                 $media['width'] = $imagedata[0];
 205                                 $media['height'] = $imagedata[1];
 206                                 $media['blurhash'] = $imagedata['blurhash'] ?? null;
 207                         } else {
 208                                 Logger::notice('No image data', ['media' => $media]);
 209                         }
 210                         if (!empty($media['preview'])) {
 211                                 $imagedata = Images::getInfoFromURLCached($media['preview']);
 212                                 if ($imagedata) {
 213                                         $media['preview-width'] = $imagedata[0];
 214                                         $media['preview-height'] = $imagedata[1];
 215                                 }
 216                         }
 217                 }
 218
 219                 if ($media['type'] != self::DOCUMENT) {
 220                         $media = self::addType($media);
 221                 }
 222
 223                 if (in_array($media['type'], [self::TEXT, self::APPLICATION, self::HTML, self::XML, self::PLAIN])) {
 224                         $media = self::addActivity($media);
 225                 }
 226
 227                 if (in_array($media['type'], [self::TEXT, self::APPLICATION, self::HTML, self::XML, self::PLAIN])) {
 228                         $media = self::addAccount($media);
 229                 }
 230
 231                 if ($media['type'] == self::HTML) {
 232                         $data = ParseUrl::getSiteinfoCached($media['url'], false);
 233                         $media['preview'] = $data['images'][0]['src'] ?? null;
 234                         $media['preview-height'] = $data['images'][0]['height'] ?? null;
 235                         $media['preview-width'] = $data['images'][0]['width'] ?? null;
 236                         $media['blurhash'] = $data['images'][0]['blurhash'] ?? null;
 237                         $media['description'] = $data['text'] ?? null;
 238                         $media['name'] = $data['title'] ?? null;
 239                         $media['author-url'] = $data['author_url'] ?? null;
 240                         $media['author-name'] = $data['author_name'] ?? null;
 241                         $media['author-image'] = $data['author_img'] ?? null;
 242                         $media['publisher-url'] = $data['publisher_url'] ?? null;
 243                         $media['publisher-name'] = $data['publisher_name'] ?? null;
 244                         $media['publisher-image'] = $data['publisher_img'] ?? null;
 245                 }
 246                 return $media;
 247         }
 248
 249         /**
 250          * Adds the activity type if the media entry is linked to an activity
 251          *
 252          * @param array $media
 253          * @return array
 254          */
 255         private static function addActivity(array $media): array
 256         {
 257                 $id = Item::fetchByLink($media['url']);
 258                 if (empty($id)) {
 259                         return $media;
 260                 }
 261
 262                 $item = Post::selectFirst([], ['id' => $id, 'network' => Protocol::FEDERATED]);
 263                 if (empty($item['id'])) {
 264                         Logger::debug('Not a federated activity', ['id' => $id, 'uri-id' => $media['uri-id'], 'url' => $media['url']]);
 265                         return $media;
 266                 }
 267
 268                 if (!empty($item['plink']) && Strings::compareLink($item['plink'], $media['url']) &&
 269                         parse_url($item['plink'], PHP_URL_HOST) != parse_url($item['uri'], PHP_URL_HOST)) {
 270                         Logger::debug('Not a link to an activity', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'plink' => $item['plink'], 'uri' => $item['uri']]);
 271                         return $media;
 272                 }
 273
 274                 if (in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
 275                         $media['mimetype'] = 'application/activity+json';
 276                 } elseif ($item['network'] == Protocol::DIASPORA) {
 277                         $media['mimetype'] = 'application/xml';
 278                 }
 279
 280                 $contact = Contact::getById($item['author-id'], ['avatar', 'gsid']);
 281                 if (!empty($contact['gsid'])) {
 282                         $gserver = DBA::selectFirst('gserver', ['url', 'site_name'], ['id' => $contact['gsid']]);
 283                 }
 284
 285                 $media['type'] = self::ACTIVITY;
 286                 $media['media-uri-id'] = $item['uri-id'];
 287                 $media['height'] = null;
 288                 $media['width'] = null;
 289                 $media['preview'] = null;
 290                 $media['preview-height'] = null;
 291                 $media['preview-width'] = null;
 292                 $media['blurhash'] = null;
 293                 $media['description'] = $item['body'];
 294                 $media['name'] = $item['title'];
 295                 $media['author-url'] = $item['author-link'];
 296                 $media['author-name'] = $item['author-name'];
 297                 $media['author-image'] = $contact['avatar'] ?? $item['author-avatar'];
 298                 $media['publisher-url'] = $gserver['url'] ?? null;
 299                 $media['publisher-name'] = $gserver['site_name'] ?? null;
 300                 $media['publisher-image'] = null;
 301
 302                 Logger::debug('Activity detected', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'plink' => $item['plink'], 'uri' => $item['uri']]);
 303                 return $media;
 304         }
 305
 306         /**
 307          * Adds the account type if the media entry is linked to an account
 308          *
 309          * @param array $media
 310          * @return array
 311          */
 312         private static function addAccount(array $media): array
 313         {
 314                 $contact = Contact::getByURL($media['url'], false);
 315                 if (empty($contact) || ($contact['network'] == Protocol::PHANTOM)) {
 316                         return $media;
 317                 }
 318
 319                 if (in_array($contact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
 320                         $media['mimetype'] = 'application/activity+json';
 321                 }
 322
 323                 if (!empty($contact['gsid'])) {
 324                         $gserver = DBA::selectFirst('gserver', ['url', 'site_name'], ['id' => $contact['gsid']]);
 325                 }
 326
 327                 $media['type'] = self::ACCOUNT;
 328                 $media['media-uri-id'] = $contact['uri-id'];
 329                 $media['height'] = null;
 330                 $media['width'] = null;
 331                 $media['preview'] = null;
 332                 $media['preview-height'] = null;
 333                 $media['preview-width'] = null;
 334                 $media['blurhash'] = null;
 335                 $media['description'] = $contact['about'];
 336                 $media['name'] = $contact['name'];
 337                 $media['author-url'] = $contact['url'];
 338                 $media['author-name'] = $contact['name'];
 339                 $media['author-image'] = $contact['avatar'];
 340                 $media['publisher-url'] = $gserver['url'] ?? null;
 341                 $media['publisher-name'] = $gserver['site_name'] ?? null;
 342                 $media['publisher-image'] = null;
 343
 344                 Logger::debug('Account detected', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'uri' => $contact['url']]);
 345                 return $media;
 346         }
 347
 348         /**
 349          * Fetch media data from local resources
 350          * @param array $media
 351          * @return array media with added data
 352          */
 353         private static function fetchLocalData(array $media): array
 354         {
 355                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'] ?? '', $matches)) {
 356                         return $media;
 357                 }
 358                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 359                 if (!empty($photo)) {
 360                         $media['mimetype'] = $photo['type'];
 361                         $media['size'] = $photo['datasize'];
 362                         $media['width'] = $photo['width'];
 363                         $media['height'] = $photo['height'];
 364                         $media['blurhash'] = $photo['blurhash'];
 365                 }
 366
 367                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['preview'] ?? '', $matches)) {
 368                         return $media;
 369                 }
 370                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 371                 if (!empty($photo)) {
 372                         $media['preview-width'] = $photo['width'];
 373                         $media['preview-height'] = $photo['height'];
 374                 }
 375
 376                 return $media;
 377         }
 378
 379         /**
 380          * Add the detected type to the media array
 381          *
 382          * @param array $data
 383          * @return array data array with the detected type
 384          */
 385         public static function addType(array $data): array
 386         {
 387                 if (empty($data['mimetype'])) {
 388                         Logger::info('No MimeType provided', ['media' => $data]);
 389                         return $data;
 390                 }
 391
 392                 $type = explode('/', current(explode(';', $data['mimetype'])));
 393                 if (count($type) < 2) {
 394                         Logger::info('Unknown MimeType', ['type' => $type, 'media' => $data]);
 395                         $data['type'] = self::UNKNOWN;
 396                         return $data;
 397                 }
 398
 399                 $filetype = strtolower($type[0]);
 400                 $subtype = strtolower($type[1]);
 401
 402                 if ($filetype == 'image') {
 403                         $data['type'] = self::IMAGE;
 404                 } elseif ($filetype == 'video') {
 405                         $data['type'] = self::VIDEO;
 406                 } elseif ($filetype == 'audio') {
 407                         $data['type'] = self::AUDIO;
 408                 } elseif (($filetype == 'text') && ($subtype == 'html')) {
 409                         $data['type'] = self::HTML;
 410                 } elseif (($filetype == 'text') && ($subtype == 'xml')) {
 411                         $data['type'] = self::XML;
 412                 } elseif (($filetype == 'text') && ($subtype == 'plain')) {
 413                         $data['type'] = self::PLAIN;
 414                 } elseif ($filetype == 'text') {
 415                         $data['type'] = self::TEXT;
 416                 } elseif (($filetype == 'application') && ($subtype == 'x-bittorrent')) {
 417                         $data['type'] = self::TORRENT;
 418                 } elseif ($filetype == 'application') {
 419                         $data['type'] = self::APPLICATION;
 420                 } else {
 421                         $data['type'] = self::UNKNOWN;
 422                         Logger::info('Unknown type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 423                         return $data;
 424                 }
 425
 426                 Logger::debug('Detected type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 427                 return $data;
 428         }
 429
 430         /**
 431          * Tests for path patterns that are usef for picture links in Friendica
 432          *
 433          * @param string $page    Link to the image page
 434          * @param string $preview Preview picture
 435          * @return boolean
 436          */
 437         private static function isPictureLink(string $page, string $preview): bool
 438         {
 439                 return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
 440         }
 441
 442         /**
 443          * Add media links and remove them from the body
 444          *
 445          * @param integer $uriid
 446          * @param string $body
 447          * @return string Body without media links
 448          */
 449         public static function insertFromBody(int $uriid, string $body): string
 450         {
 451                 // Simplify image codes
 452                 $unshared_body = $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 453
 454                 $attachments = [];
 455                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 456                         foreach ($pictures as $picture) {
 457                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 458                                         continue;
 459                                 }
 460                                 $body = str_replace($picture[0], '', $body);
 461                                 $image = str_replace('-1.', '-0.', $picture[2]);
 462                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 463                                         'preview' => $picture[2], 'description' => $picture[3]];
 464                         }
 465                 }
 466
 467                 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 468                         foreach ($pictures as $picture) {
 469                                 $body = str_replace($picture[0], '', $body);
 470                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
 471                         }
 472                 }
 473
 474                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 475                         foreach ($pictures as $picture) {
 476                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 477                                         continue;
 478                                 }
 479                                 $body = str_replace($picture[0], '', $body);
 480                                 $image = str_replace('-1.', '-0.', $picture[2]);
 481                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 482                                         'preview' => $picture[2], 'description' => null];
 483                         }
 484                 }
 485
 486                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
 487                         foreach ($pictures as $picture) {
 488                                 $body = str_replace($picture[0], '', $body);
 489                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
 490                         }
 491                 }
 492
 493                 if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
 494                         foreach ($audios as $audio) {
 495                                 $body = str_replace($audio[0], '', $body);
 496                                 $attachments[$audio[1]] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
 497                         }
 498                 }
 499
 500                 if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
 501                         foreach ($videos as $video) {
 502                                 $body = str_replace($video[0], '', $body);
 503                                 $attachments[$video[1]] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
 504                         }
 505                 }
 506
 507                 foreach ($attachments as $attachment) {
 508                         if (Post\Link::exists($uriid, $attachment['preview'] ?? $attachment['url'])) {
 509                                 continue;
 510                         }
 511
 512                         // Only store attachments that are part of the unshared body
 513                         if (Item::containsLink($unshared_body, $attachment['preview'] ?? $attachment['url'], $attachment['type'])) {
 514                                 self::insert($attachment);
 515                         }
 516                 }
 517
 518                 return trim($body);
 519         }
 520
 521         /**
 522          * Add media links from a relevant url in the body
 523          *
 524          * @param integer $uriid
 525          * @param string $body
 526          * @return void
 527          */
 528         public static function insertFromRelevantUrl(int $uriid, string $body)
 529         {
 530                 // Remove all hashtags and mentions
 531                 $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '', $body);
 532
 533                 // Search for pure links
 534                 if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches)) {
 535                         foreach ($matches[1] as $url) {
 536                                 Logger::info('Got page url (link without description)', ['uri-id' => $uriid, 'url' => $url]);
 537                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 538                         }
 539                 }
 540
 541                 // Search for links with descriptions
 542                 if (preg_match_all("/\[url\=(https?:.*?)\].*?\[\/url\]/ism", $body, $matches)) {
 543                         foreach ($matches[1] as $url) {
 544                                 Logger::info('Got page url (link with description)', ['uri-id' => $uriid, 'url' => $url]);
 545                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 546                         }
 547                 }
 548         }
 549
 550         /**
 551          * Add media links from the attachment field
 552          *
 553          * @param integer $uriid
 554          * @param string $body
 555          * @return void
 556          */
 557         public static function insertFromAttachmentData(int $uriid, string $body)
 558         {
 559                 $data = BBCode::getAttachmentData($body);
 560                 if (empty($data))  {
 561                         return;
 562                 }
 563
 564                 Logger::info('Adding attachment data', ['data' => $data]);
 565                 $attachment = [
 566                         'uri-id' => $uriid,
 567                         'type' => self::HTML,
 568                         'url' => $data['url'],
 569                         'preview' => $data['preview'] ?? null,
 570                         'description' => $data['description'] ?? null,
 571                         'name' => $data['title'] ?? null,
 572                         'author-url' => $data['author_url'] ?? null,
 573                         'author-name' => $data['author_name'] ?? null,
 574                         'publisher-url' => $data['provider_url'] ?? null,
 575                         'publisher-name' => $data['provider_name'] ?? null,
 576                 ];
 577                 if (!empty($data['image'])) {
 578                         $attachment['preview'] = $data['image'];
 579                 }
 580                 self::insert($attachment);
 581         }
 582
 583         /**
 584          * Add media links from the attach field
 585          *
 586          * @param integer $uriid
 587          * @param string $attach
 588          * @return void
 589          */
 590         public static function insertFromAttachment(int $uriid, string $attach)
 591         {
 592                 if (!preg_match_all('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\"(?: title=\"(.*?)\")?|', $attach, $matches, PREG_SET_ORDER)) {
 593                         return;
 594                 }
 595
 596                 foreach ($matches as $attachment) {
 597                         $media['type'] = self::DOCUMENT;
 598                         $media['uri-id'] = $uriid;
 599                         $media['url'] = $attachment[1];
 600                         $media['size'] = $attachment[2];
 601                         $media['mimetype'] = $attachment[3];
 602                         $media['description'] = $attachment[4] ?? '';
 603
 604                         self::insert($media);
 605                 }
 606         }
 607
 608         /**
 609          * Retrieves the media attachments associated with the provided item ID.
 610          *
 611          * @param int $uri_id URI id
 612          * @param array $types Media types
 613          * @return array|bool Array on success, false on error
 614          * @throws \Exception
 615          */
 616         public static function getByURIId(int $uri_id, array $types = [])
 617         {
 618                 $condition = ['uri-id' => $uri_id];
 619
 620                 if (!empty($types)) {
 621                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 622                 }
 623
 624                 return DBA::selectToArray('post-media', [], $condition, ['order' => ['id']]);
 625         }
 626
 627         /**
 628          * Checks if media attachments are associated with the provided item ID.
 629          *
 630          * @param int $uri_id URI id
 631          * @param array $types Media types
 632          * @return bool Whether media attachment exists
 633          * @throws \Exception
 634          */
 635         public static function existsByURIId(int $uri_id, array $types = []): bool
 636         {
 637                 $condition = ['uri-id' => $uri_id];
 638
 639                 if (!empty($types)) {
 640                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 641                 }
 642
 643                 return DBA::exists('post-media', $condition);
 644         }
 645
 646         /**
 647          * Split the attachment media in the three segments "visual", "link" and "additional"
 648          *
 649          * @param int    $uri_id URI id
 650          * @param array  $links list of links that shouldn't be added
 651          * @param bool   $has_media
 652          * @return array attachments
 653          */
 654         public static function splitAttachments(int $uri_id, array $links = [], bool $has_media = true): array
 655         {
 656                 $attachments = ['visual' => [], 'link' => [], 'additional' => []];
 657
 658                 if (!$has_media) {
 659                         return $attachments;
 660                 }
 661
 662                 $media = self::getByURIId($uri_id);
 663                 if (empty($media)) {
 664                         return $attachments;
 665                 }
 666
 667                 $heights = [];
 668                 $selected = '';
 669                 $previews = [];
 670
 671                 foreach ($media as $medium) {
 672                         foreach ($links as $link) {
 673                                 if (Strings::compareLink($link, $medium['url'])) {
 674                                         continue 2;
 675                                 }
 676                         }
 677
 678                         // Avoid adding separate media entries for previews
 679                         foreach ($previews as $preview) {
 680                                 if (Strings::compareLink($preview, $medium['url'])) {
 681                                         continue 2;
 682                                 }
 683                         }
 684
 685                         // Currently these two types are ignored here.
 686                         // Posts are added differently and contacts are not displayed as attachments.
 687                         if (in_array($medium['type'], [self::ACCOUNT, self::ACTIVITY])) {
 688                                 continue;
 689                         }
 690
 691                         if (!empty($medium['preview'])) {
 692                                 $previews[] = $medium['preview'];
 693                         }
 694
 695                         $type = explode('/', explode(';', $medium['mimetype'] ?? '')[0]);
 696                         if (count($type) < 2) {
 697                                 Logger::info('Unknown MimeType', ['type' => $type, 'media' => $medium]);
 698                                 $filetype = 'unkn';
 699                                 $subtype = 'unkn';
 700                         } else {
 701                                 $filetype = strtolower($type[0]);
 702                                 $subtype = strtolower($type[1]);
 703                         }
 704
 705                         $medium['filetype'] = $filetype;
 706                         $medium['subtype'] = $subtype;
 707
 708                         if ($medium['type'] == self::HTML || (($filetype == 'text') && ($subtype == 'html'))) {
 709                                 $attachments['link'][] = $medium;
 710                                 continue;
 711                         }
 712
 713                         if (in_array($medium['type'], [self::AUDIO, self::IMAGE]) ||
 714                                 in_array($filetype, ['audio', 'image'])) {
 715                                 $attachments['visual'][] = $medium;
 716                         } elseif (($medium['type'] == self::VIDEO) || ($filetype == 'video')) {
 717                                 if (!empty($medium['height'])) {
 718                                         // Peertube videos are delivered in many different resolutions. We pick a moderate one.
 719                                         // Since only Peertube provides a "height" parameter, this wouldn't be executed
 720                                         // when someone for example on Mastodon was sharing multiple videos in a single post.
 721                                         $heights[$medium['height']] = $medium['url'];
 722                                         $video[$medium['url']] = $medium;
 723                                 } else {
 724                                         $attachments['visual'][] = $medium;
 725                                 }
 726                         } else {
 727                                 $attachments['additional'][] = $medium;
 728                         }
 729                 }
 730
 731                 if (!empty($heights)) {
 732                         ksort($heights);
 733                         foreach ($heights as $height => $url) {
 734                                 if (empty($selected) || $height <= 480) {
 735                                         $selected = $url;
 736                                 }
 737                         }
 738
 739                         if (!empty($selected)) {
 740                                 $attachments['visual'][] = $video[$selected];
 741                                 unset($video[$selected]);
 742                                 foreach ($video as $element) {
 743                                         $attachments['additional'][] = $element;
 744                                 }
 745                         }
 746                 }
 747
 748                 return $attachments;
 749         }
 750
 751         /**
 752          * Add media attachments to the body
 753          *
 754          * @param int    $uriid
 755          * @param string $body
 756          * @param array  $types
 757          *
 758          * @return string body
 759          */
 760         public static function addAttachmentsToBody(int $uriid, string $body = '', array $types = [self::IMAGE, self::AUDIO, self::VIDEO]): string
 761         {
 762                 if (empty($body)) {
 763                         $item = Post::selectFirst(['body'], ['uri-id' => $uriid]);
 764                         if (!DBA::isResult($item)) {
 765                                 return '';
 766                         }
 767                         $body = $item['body'];
 768                 }
 769                 $original_body = $body;
 770
 771                 $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
 772
 773                 foreach (self::getByURIId($uriid, $types) as $media) {
 774                         if (Item::containsLink($body, $media['preview'] ?? $media['url'], $media['type'])) {
 775                                 continue;
 776                         }
 777
 778                         if ($media['type'] == self::IMAGE) {
 779                                 if (!empty($media['preview'])) {
 780                                         if (!empty($media['description'])) {
 781                                                 $body .= "\n[url=" . $media['url'] . "][img=" . $media['preview'] . ']' . $media['description'] .'[/img][/url]';
 782                                         } else {
 783                                                 $body .= "\n[url=" . $media['url'] . "][img]" . $media['preview'] .'[/img][/url]';
 784                                         }
 785                                 } else {
 786                                         if (!empty($media['description'])) {
 787                                                 $body .= "\n[img=" . $media['url'] . ']' . $media['description'] .'[/img]';
 788                                         } else {
 789                                                 $body .= "\n[img]" . $media['url'] .'[/img]';
 790                                         }
 791                                 }
 792                         } elseif ($media['type'] == self::AUDIO) {
 793                                 $body .= "\n[audio]" . $media['url'] . "[/audio]\n";
 794                         } elseif ($media['type'] == self::VIDEO) {
 795                                 $body .= "\n[video]" . $media['url'] . "[/video]\n";
 796                         }
 797                 }
 798
 799                 if (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $original_body, $match)) {
 800                         $body .= "\n" . $match[1];
 801                 }
 802
 803                 return $body;
 804         }
 805
 806         /**
 807          * Get preview link for given media id
 808          *
 809          * @param integer $id   media id
 810          * @param string  $size One of the Proxy::SIZE_* constants
 811          * @return string preview link
 812          */
 813         public static function getPreviewUrlForId(int $id, string $size = ''): string
 814         {
 815                 $url = DI::baseUrl() . '/photo/preview/';
 816                 switch ($size) {
 817                         case Proxy::SIZE_MICRO:
 818                                 $url .= Proxy::PIXEL_MICRO . '/';
 819                                 break;
 820                         case Proxy::SIZE_THUMB:
 821                                 $url .= Proxy::PIXEL_THUMB . '/';
 822                                 break;
 823                         case Proxy::SIZE_SMALL:
 824                                 $url .= Proxy::PIXEL_SMALL . '/';
 825                                 break;
 826                         case Proxy::SIZE_MEDIUM:
 827                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 828                                 break;
 829                         case Proxy::SIZE_LARGE:
 830                                 $url .= Proxy::PIXEL_LARGE . '/';
 831                                 break;
 832                 }
 833                 return $url . $id;
 834         }
 835
 836         /**
 837          * Get media link for given media id
 838          *
 839          * @param integer $id   media id
 840          * @param string  $size One of the Proxy::SIZE_* constants
 841          * @return string media link
 842          */
 843         public static function getUrlForId(int $id, string $size = ''): string
 844         {
 845                 $url = DI::baseUrl() . '/photo/media/';
 846                 switch ($size) {
 847                         case Proxy::SIZE_MICRO:
 848                                 $url .= Proxy::PIXEL_MICRO . '/';
 849                                 break;
 850                         case Proxy::SIZE_THUMB:
 851                                 $url .= Proxy::PIXEL_THUMB . '/';
 852                                 break;
 853                         case Proxy::SIZE_SMALL:
 854                                 $url .= Proxy::PIXEL_SMALL . '/';
 855                                 break;
 856                         case Proxy::SIZE_MEDIUM:
 857                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 858                                 break;
 859                         case Proxy::SIZE_LARGE:
 860                                 $url .= Proxy::PIXEL_LARGE . '/';
 861                                 break;
 862                 }
 863                 return $url . $id;
 864         }
 865 }