src/Content/Text/BBCode.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\Content\Text;
  23
  24 use DOMDocument;
  25 use DOMXPath;
  26 use Exception;
  27 use Friendica\Content\ContactSelector;
  28 use Friendica\Content\Item;
  29 use Friendica\Content\OEmbed;
  30 use Friendica\Content\PageInfo;
  31 use Friendica\Content\Smilies;
  32 use Friendica\Core\Hook;
  33 use Friendica\Core\Logger;
  34 use Friendica\Core\Protocol;
  35 use Friendica\Core\Renderer;
  36 use Friendica\DI;
  37 use Friendica\Model\Contact;
  38 use Friendica\Model\Event;
  39 use Friendica\Model\Photo;
  40 use Friendica\Model\Post;
  41 use Friendica\Model\Tag;
  42 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  43 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  44 use Friendica\Object\Image;
  45 use Friendica\Protocol\Activity;
  46 use Friendica\Util\Images;
  47 use Friendica\Util\Map;
  48 use Friendica\Util\ParseUrl;
  49 use Friendica\Util\Proxy;
  50 use Friendica\Util\Strings;
  51 use Friendica\Util\XML;
  52
  53 class BBCode
  54 {
  55         // Update this value to the current date whenever changes are made to BBCode::convert
  56         const VERSION = '2021-07-28';
  57
  58         const INTERNAL = 0;
  59         const EXTERNAL = 1;
  60         const API = 2;
  61         const DIASPORA = 3;
  62         const CONNECTORS = 4;
  63         const OSTATUS = 7;
  64         const TWITTER = 8;
  65         const BACKLINK = 8;
  66         const ACTIVITYPUB = 9;
  67
  68         const TOP_ANCHOR = '<br class="top-anchor">';
  69         const BOTTOM_ANCHOR = '<br class="button-anchor">';
  70         /**
  71          * Fetches attachment data that were generated the old way
  72          *
  73          * @param string $body Message body
  74          * @return array
  75          *                     'type' -> Message type ('link', 'video', 'photo')
  76          *                     'text' -> Text before the shared message
  77          *                     'after' -> Text after the shared message
  78          *                     'image' -> Preview image of the message
  79          *                     'url' -> Url to the attached message
  80          *                     'title' -> Title of the attachment
  81          *                     'description' -> Description of the attachment
  82          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  83          */
  84         private static function getOldAttachmentData(string $body): array
  85         {
  86                 $post = [];
  87
  88                 // Simplify image codes
  89                 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
  90
  91                 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
  92                         foreach ($attached as $data) {
  93                                 if (!in_array($data[1], ['type-link', 'type-video', 'type-photo'])) {
  94                                         continue;
  95                                 }
  96
  97                                 $post['type'] = substr($data[1], 5);
  98
  99                                 $pos = strpos($body, $data[0]);
 100                                 if ($pos > 0) {
 101                                         $post['text'] = trim(substr($body, 0, $pos));
 102                                         $post['after'] = trim(substr($body, $pos + strlen($data[0])));
 103                                 } else {
 104                                         $post['text'] = trim(str_replace($data[0], '', $body));
 105                                         $post['after'] = '';
 106                                 }
 107
 108                                 $attacheddata = $data[2];
 109
 110                                 if (preg_match("/\[img\](.*?)\[\/img\]/ism", $attacheddata, $matches)) {
 111
 112                                         $picturedata = Images::getInfoFromURLCached($matches[1]);
 113
 114                                         if ($picturedata) {
 115                                                 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
 116                                                         $post['image'] = $matches[1];
 117                                                 } else {
 118                                                         $post['preview'] = $matches[1];
 119                                                 }
 120                                         }
 121                                 }
 122
 123                                 if (preg_match("/\[bookmark\=(.*?)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
 124                                         $post['url'] = $matches[1];
 125                                         $post['title'] = $matches[2];
 126                                 }
 127                                 if (!empty($post['url']) && (in_array($post['type'], ['link', 'video']))
 128                                         && preg_match("/\[url\=(.*?)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
 129                                         $post['url'] = $matches[1];
 130                                 }
 131
 132                                 // Search for description
 133                                 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
 134                                         $post['description'] = $matches[1];
 135                                 }
 136                         }
 137                 }
 138                 return $post;
 139         }
 140
 141         /**
 142          * Fetches attachment data that were generated with the "attachment" element
 143          *
 144          * @param string $body Message body
 145          * @return array
 146          *                     'type' -> Message type ('link', 'video', 'photo')
 147          *                     'text' -> Text before the shared message
 148          *                     'after' -> Text after the shared message
 149          *                     'image' -> Preview image of the message
 150          *                     'url' -> Url to the attached message
 151          *                     'title' -> Title of the attachment
 152          *                     'description' -> Description of the attachment
 153          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 154          */
 155         public static function getAttachmentData(string $body): array
 156         {
 157                 DI::profiler()->startRecording('rendering');
 158                 $data = [
 159                         'type'          => '',
 160                         'text'          => '',
 161                         'after'         => '',
 162                         'image'         => null,
 163                         'url'           => '',
 164                         'author_name'   => '',
 165                         'author_url'    => '',
 166                         'provider_name' => '',
 167                         'provider_url'  => '',
 168                         'title'         => '',
 169                         'description'   => '',
 170                 ];
 171
 172                 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
 173                         DI::profiler()->stopRecording();
 174                         return self::getOldAttachmentData($body);
 175                 }
 176
 177                 $attributes = $match[2];
 178
 179                 $data['text'] = trim($match[1]);
 180
 181                 foreach (['type', 'url', 'title', 'image', 'preview', 'publisher_name', 'publisher_url', 'author_name', 'author_url'] as $field) {
 182                         preg_match('/' . preg_quote($field, '/') . '=("|\')(.*?)\1/ism', $attributes, $matches);
 183                         $value = $matches[2] ?? '';
 184
 185                         if ($value != '') {
 186                                 switch ($field) {
 187                                         case 'publisher_name':
 188                                                 $data['provider_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 189                                                 break;
 190
 191                                         case 'publisher_url':
 192                                                 $data['provider_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 193                                                 break;
 194
 195                                         case 'author_name':
 196                                                 $data['author_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 197                                                 if ($data['provider_name'] == $data['author_name']) {
 198                                                         $data['author_name'] = '';
 199                                                 }
 200                                                 break;
 201
 202                                         case 'author_url':
 203                                                 $data['author_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 204                                                 if ($data['provider_url'] == $data['author_url']) {
 205                                                         $data['author_url'] = '';
 206                                                 }
 207                                                 break;
 208
 209                                         case 'title':
 210                                                 $value = self::convert(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), false, true);
 211                                                 $value = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 212                                                 $value = str_replace(['[', ']'], ['&#91;', '&#93;'], $value);
 213                                                 $data['title'] = $value;
 214
 215                                         default:
 216                                                 $data[$field] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 217                                                 break;
 218                                 }
 219                         }
 220                 }
 221
 222                 if (!in_array($data['type'], ['link', 'audio', 'photo', 'video'])) {
 223                         DI::profiler()->stopRecording();
 224                         return [];
 225                 }
 226
 227                 $data['description'] = trim($match[3]);
 228
 229                 $data['after'] = trim($match[4]);
 230
 231                 $parts = parse_url($data['url']);
 232                 if (!empty($parts['scheme']) && !empty($parts['host'])) {
 233                         if (empty($data['provider_name'])) {
 234                                 $data['provider_name'] = $parts['host'];
 235                         }
 236                         if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
 237                                 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
 238
 239                                 if (!empty($parts['port'])) {
 240                                         $data['provider_url'] .= ':' . $parts['port'];
 241                                 }
 242                         }
 243                 }
 244
 245                 DI::profiler()->stopRecording();
 246                 return $data;
 247         }
 248
 249         public static function getAttachedData(string $body, array $item = []): array
 250         {
 251                 /*
 252                 - text:
 253                 - type: link, video, photo
 254                 - title:
 255                 - url:
 256                 - image:
 257                 - description:
 258                 - (thumbnail)
 259                 */
 260
 261                 DI::profiler()->startRecording('rendering');
 262                 $has_title = !empty($item['title']);
 263                 $plink = $item['plink'] ?? '';
 264                 $post = self::getAttachmentData($body);
 265
 266                 // Get all linked images with alternative image description
 267                 if (preg_match_all("/\[img=(http[^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 268                         foreach ($pictures as $picture) {
 269                                 if (Photo::isLocal($picture[1])) {
 270                                         $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => $picture[2]];
 271                                 } else {
 272                                         $post['remote_images'][] = ['url' => $picture[1], 'description' => $picture[2]];
 273                                 }
 274                         }
 275                         if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
 276                                 $post['image_description'] = $post['images'][0]['description'];
 277                         }
 278                 }
 279
 280                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 281                         foreach ($pictures as $picture) {
 282                                 if (Photo::isLocal($picture[1])) {
 283                                         $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => ''];
 284                                 } else {
 285                                         $post['remote_images'][] = ['url' => $picture[1], 'description' => ''];
 286                                 }
 287                         }
 288                 }
 289
 290                 if (!isset($post['type'])) {
 291                         $post['text'] = $body;
 292                 }
 293
 294                 // Simplify image codes
 295                 $post['text'] = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $post['text']);
 296                 $post['text'] = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $post['text']);
 297
 298                 // if nothing is found, it maybe having an image.
 299                 if (!isset($post['type'])) {
 300                         if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $post['text'], $pictures, PREG_SET_ORDER)) {
 301                                 if ((count($pictures) == 1) && !$has_title) {
 302                                         if (!empty($item['object-type']) && ($item['object-type'] == Activity\ObjectType::IMAGE)) {
 303                                                 // Replace the preview picture with the real picture
 304                                                 $url = str_replace('-1.', '-0.', $pictures[0][2]);
 305                                                 $data = ['url' => $url, 'type' => 'photo'];
 306                                         } else {
 307                                                 // Checking, if the link goes to a picture
 308                                                 $data = ParseUrl::getSiteinfoCached($pictures[0][1]);
 309                                         }
 310
 311                                         // Workaround:
 312                                         // Sometimes photo posts to the own album are not detected at the start.
 313                                         // So we seem to cannot use the cache for these cases. That's strange.
 314                                         if (($data['type'] != 'photo') && strstr($pictures[0][1], '/photos/')) {
 315                                                 $data = ParseUrl::getSiteinfo($pictures[0][1]);
 316                                         }
 317
 318                                         if ($data['type'] == 'photo') {
 319                                                 $post['type'] = 'photo';
 320                                                 if (isset($data['images'][0])) {
 321                                                         $post['image'] = $data['images'][0]['src'];
 322                                                         $post['url'] = $data['url'];
 323                                                 } else {
 324                                                         $post['image'] = $data['url'];
 325                                                 }
 326
 327                                                 $post['preview'] = $pictures[0][2];
 328                                                 $post['text'] = trim(str_replace($pictures[0][0], '', $post['text']));
 329                                         } else {
 330                                                 $imgdata = Images::getInfoFromURLCached($pictures[0][1]);
 331                                                 if (($imgdata) && substr($imgdata['mime'], 0, 6) == 'image/') {
 332                                                         $post['type'] = 'photo';
 333                                                         $post['image'] = $pictures[0][1];
 334                                                         $post['preview'] = $pictures[0][2];
 335                                                         $post['text'] = trim(str_replace($pictures[0][0], '', $post['text']));
 336                                                 }
 337                                         }
 338                                 } elseif (count($pictures) > 0) {
 339                                         if (count($pictures) > 4) {
 340                                                 $post['type'] = 'link';
 341                                                 $post['url'] = $plink;
 342                                         } else {
 343                                                 $post['type'] = 'photo';
 344                                         }
 345
 346                                         $post['image'] = $pictures[0][2];
 347
 348                                         foreach ($pictures as $picture) {
 349                                                 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 350                                         }
 351                                 }
 352                         } elseif (preg_match_all("(\[img\](.*?)\[\/img\])ism", $post['text'], $pictures, PREG_SET_ORDER)) {
 353                                 if ($has_title) {
 354                                         $post['type'] = 'link';
 355                                         $post['url'] = $plink;
 356                                 } else {
 357                                         $post['type'] = 'photo';
 358                                 }
 359
 360                                 $post['image'] = $pictures[0][1];
 361                                 foreach ($pictures as $picture) {
 362                                         $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 363                                 }
 364                         }
 365
 366                         // Test for the external links
 367                         preg_match_all("(\[url\](.*?)\[\/url\])ism", $post['text'], $links1, PREG_SET_ORDER);
 368                         preg_match_all("(\[url\=(.*?)\].*?\[\/url\])ism", $post['text'], $links2, PREG_SET_ORDER);
 369
 370                         $links = array_merge($links1, $links2);
 371
 372                         // If there is only a single one, then use it.
 373                         // This should cover link posts via API.
 374                         if ((count($links) == 1) && !isset($post['preview']) && !$has_title) {
 375                                 $post['type'] = 'link';
 376                                 $post['url'] = $links[0][1];
 377                         }
 378
 379                         // Simplify "video" element
 380                         $post['text'] = preg_replace('(\[video.*?\ssrc\s?=\s?([^\s\]]+).*?\].*?\[/video\])ism', '[video]$1[/video]', $post['text']);
 381
 382                         // Now count the number of external media links
 383                         preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $post['text'], $links1, PREG_SET_ORDER);
 384                         preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $post['text'], $links2, PREG_SET_ORDER);
 385                         preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $post['text'], $links3, PREG_SET_ORDER);
 386                         preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $post['text'], $links4, PREG_SET_ORDER);
 387
 388                         // Add them to the other external links
 389                         $links = array_merge($links, $links1, $links2, $links3, $links4);
 390
 391                         // Are there more than one?
 392                         if (count($links) > 1) {
 393                                 // The post will be the type "text", which means a blog post
 394                                 unset($post['type']);
 395                                 $post['url'] = $plink;
 396                         }
 397
 398                         if (!isset($post['type'])) {
 399                                 $post['type'] = 'text';
 400                         }
 401
 402                         if (($post['type'] == 'photo') && empty($post['images']) && !empty($post['remote_images'])) {
 403                                 $post['images'] = $post['remote_images'];
 404                                 $post['image'] = $post['images'][0]['url'];
 405                                 if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
 406                                         $post['image_description'] = $post['images'][0]['description'];
 407                                 }
 408                         }
 409                         unset($post['remote_images']);
 410                 } elseif (isset($post['url']) && ($post['type'] == 'video')) {
 411                         $data = ParseUrl::getSiteinfoCached($post['url']);
 412
 413                         if (isset($data['images'][0])) {
 414                                 $post['image'] = $data['images'][0]['src'];
 415                         }
 416                 } elseif (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $post['text'], $pictures, PREG_SET_ORDER)) {
 417                         foreach ($pictures as $picture) {
 418                                 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 419                         }
 420                 }
 421
 422                 DI::profiler()->stopRecording();
 423                 return $post;
 424         }
 425
 426         /**
 427          * Remove [attachment] BBCode and replaces it with a regular [url]
 428          *
 429          * @param string  $body
 430          * @param boolean $no_link_desc No link description
 431          * @return string with replaced body
 432          */
 433         public static function removeAttachment(string $body, bool $no_link_desc = false): string
 434         {
 435                 return preg_replace_callback("/\s*\[attachment (.*?)\](.*?)\[\/attachment\]\s*/ism",
 436                         function ($match) use ($body, $no_link_desc) {
 437                                 $attach_data = self::getAttachmentData($match[0]);
 438                                 if (empty($attach_data['url'])) {
 439                                         return $match[0];
 440                                 } elseif (strpos(str_replace($match[0], '', $body), $attach_data['url']) !== false) {
 441                                         return '';
 442                                 } elseif (empty($attach_data['title']) || $no_link_desc) {
 443                                         return " \n[url]" . $attach_data['url'] . "[/url]\n";
 444                                 } else {
 445                                         return " \n[url=" . $attach_data['url'] . ']' . $attach_data['title'] . "[/url]\n";
 446                                 }
 447                 }, $body);
 448         }
 449
 450         /**
 451          * Converts a BBCode text into plaintext
 452          *
 453          * @param string $text
 454          * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
 455          * @return string
 456          */
 457         public static function toPlaintext(string $text, bool $keep_urls = true): string
 458         {
 459                 DI::profiler()->startRecording('rendering');
 460                 // Remove pictures in advance to avoid unneeded proxy calls
 461                 $text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $2 ', $text);
 462                 $text = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $text);
 463
 464                 // Remove attachment
 465                 $text = self::removeAttachment($text);
 466
 467                 $naked_text = HTML::toPlaintext(self::convert($text, false, 0, true), 0, !$keep_urls);
 468
 469                 DI::profiler()->stopRecording();
 470                 return $naked_text;
 471         }
 472
 473         private static function proxyUrl(string $image, int $simplehtml = self::INTERNAL, int $uriid = 0, string $size = ''): string
 474         {
 475                 // Only send proxied pictures to API and for internal display
 476                 if (!in_array($simplehtml, [self::INTERNAL, self::API])) {
 477                         return $image;
 478                 } elseif ($uriid > 0) {
 479                         return Post\Link::getByLink($uriid, $image, $size);
 480                 } else {
 481                         return Proxy::proxifyUrl($image, $size);
 482                 }
 483         }
 484
 485         /**
 486          * This function changing the visual size (not the real size) of images.
 487          * The function does not work for pictures with an alternate text description.
 488          * This could only be changed by using some new "img" BBCode format.
 489          *
 490          * @param string $srctext The body with images
 491          * @return string The body with possibly scaled images
 492          */
 493         public static function scaleExternalImages(string $srctext): string
 494         {
 495                 DI::profiler()->startRecording('rendering');
 496                 $s = $srctext;
 497
 498                 // Simplify image links
 499                 $s = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $s);
 500
 501                 $matches = null;
 502                 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
 503                 if ($c) {
 504                         foreach ($matches as $mtch) {
 505                                 Logger::debug('scale_external_image', ['image' => $mtch[1]]);
 506
 507                                 $hostname = str_replace('www.', '', substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3));
 508                                 if (stristr($mtch[1], $hostname)) {
 509                                         continue;
 510                                 }
 511
 512                                 $curlResult = DI::httpClient()->get($mtch[1], HttpClientAccept::IMAGE);
 513                                 if (!$curlResult->isSuccess()) {
 514                                         continue;
 515                                 }
 516
 517                                 Logger::debug('Got picture', ['Content-Type' => $curlResult->getHeader('Content-Type'), 'url' => $mtch[1]]);
 518
 519                                 $i = $curlResult->getBody();
 520                                 $type = $curlResult->getContentType();
 521                                 $type = Images::getMimeTypeByData($i, $mtch[1], $type);
 522
 523                                 if ($i) {
 524                                         $Image = new Image($i, $type);
 525                                         if ($Image->isValid()) {
 526                                                 $orig_width = $Image->getWidth();
 527                                                 $orig_height = $Image->getHeight();
 528
 529                                                 if ($orig_width > 640 || $orig_height > 640) {
 530                                                         $Image->scaleDown(640);
 531                                                         $new_width = $Image->getWidth();
 532                                                         $new_height = $Image->getHeight();
 533                                                         Logger::debug('External images scaled', ['orig_width' => $orig_width, 'new_width' => $new_width, 'orig_height' => $orig_height, 'new_height' => $new_height, 'match' => $mtch[0]]);
 534                                                         $s = str_replace(
 535                                                                 $mtch[0],
 536                                                                 '[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
 537                                                                 . "\n",
 538                                                                 $s
 539                                                         );
 540                                                         Logger::debug('New string', ['image' => $s]);
 541                                                 }
 542                                         }
 543                                 }
 544                         }
 545                 }
 546
 547                 DI::profiler()->stopRecording();
 548                 return $s;
 549         }
 550
 551         /**
 552          * Truncates imported message body string length to max_import_size
 553          *
 554          * The purpose of this function is to apply system message length limits to
 555          * imported messages without including any embedded photos in the length
 556          *
 557          * @param string $body
 558          * @return string
 559          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 560          */
 561         public static function limitBodySize(string $body): string
 562         {
 563                 DI::profiler()->startRecording('rendering');
 564                 $maxlen = DI::config()->get('config', 'max_import_size', 0);
 565
 566                 // If the length of the body, including the embedded images, is smaller
 567                 // than the maximum, then don't waste time looking for the images
 568                 if ($maxlen && (strlen($body) > $maxlen)) {
 569
 570                         Logger::info('the total body length exceeds the limit', ['maxlen' => $maxlen, 'body_len' => strlen($body)]);
 571
 572                         $orig_body = $body;
 573                         $new_body = '';
 574                         $textlen = 0;
 575
 576                         $img_start = strpos($orig_body, '[img');
 577                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 578                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 579                         while (($img_st_close !== false) && ($img_end !== false)) {
 580
 581                                 $img_st_close++; // make it point to AFTER the closing bracket
 582                                 $img_end += $img_start;
 583                                 $img_end += strlen('[/img]');
 584
 585                                 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 586                                         // This is an embedded image
 587
 588                                         if (($textlen + $img_start) > $maxlen) {
 589                                                 if ($textlen < $maxlen) {
 590                                                         Logger::debug('the limit happens before an embedded image');
 591                                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 592                                                         $textlen = $maxlen;
 593                                                 }
 594                                         } else {
 595                                                 $new_body = $new_body . substr($orig_body, 0, $img_start);
 596                                                 $textlen += $img_start;
 597                                         }
 598
 599                                         $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 600                                 } else {
 601
 602                                         if (($textlen + $img_end) > $maxlen) {
 603                                                 if ($textlen < $maxlen) {
 604                                                         Logger::debug('the limit happens before the end of a non-embedded image');
 605                                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 606                                                         $textlen = $maxlen;
 607                                                 }
 608                                         } else {
 609                                                 $new_body = $new_body . substr($orig_body, 0, $img_end);
 610                                                 $textlen += $img_end;
 611                                         }
 612                                 }
 613                                 $orig_body = substr($orig_body, $img_end);
 614
 615                                 if ($orig_body === false) {
 616                                         // in case the body ends on a closing image tag
 617                                         $orig_body = '';
 618                                 }
 619
 620                                 $img_start = strpos($orig_body, '[img');
 621                                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 622                                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 623                         }
 624
 625                         if (($textlen + strlen($orig_body)) > $maxlen) {
 626                                 if ($textlen < $maxlen) {
 627                                         Logger::debug('the limit happens after the end of the last image');
 628                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 629                                 }
 630                         } else {
 631                                 Logger::debug('the text size with embedded images extracted did not violate the limit');
 632                                 $new_body = $new_body . $orig_body;
 633                         }
 634
 635                         DI::profiler()->stopRecording();
 636                         return $new_body;
 637                 } else {
 638                         DI::profiler()->stopRecording();
 639                         return $body;
 640                 }
 641         }
 642
 643         /**
 644          * Processes [attachment] tags
 645          *
 646          * Note: Can produce a [bookmark] tag in the returned string
 647          *
 648          * @param string  $text
 649          * @param integer $simplehtml
 650          * @param bool    $tryoembed
 651          * @param array   $data
 652          * @param int     $uriid
 653          * @return string
 654          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 655          */
 656         public static function convertAttachment(string $text, int $simplehtml = self::INTERNAL, bool $tryoembed = true, array $data = [], int $uriid = 0): string
 657         {
 658                 DI::profiler()->startRecording('rendering');
 659                 $data = $data ?: self::getAttachmentData($text);
 660                 if (empty($data) || empty($data['url'])) {
 661                         DI::profiler()->stopRecording();
 662                         return $text;
 663                 }
 664
 665                 if (isset($data['title'])) {
 666                         $data['title'] = strip_tags($data['title']);
 667                         $data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
 668                 } else {
 669                         $data['title'] = '';
 670                 }
 671
 672                 if (((strpos($data['text'], '[img=') !== false) || (strpos($data['text'], '[img]') !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
 673                         $data['preview'] = $data['image'];
 674                         $data['image'] = '';
 675                 }
 676
 677                 $return = '';
 678                 try {
 679                         if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
 680                                 $return = OEmbed::getHTML($data['url'], $data['title']);
 681                         } else {
 682                                 throw new Exception('OEmbed is disabled for this attachment.');
 683                         }
 684                 } catch (Exception $e) {
 685                         $data['title'] = ($data['title'] ?? '') ?: $data['url'];
 686
 687                         if ($simplehtml != self::CONNECTORS) {
 688                                 $return = sprintf('<div class="type-%s">', $data['type']);
 689                         }
 690
 691                         if (!empty($data['title']) && !empty($data['url'])) {
 692                                 if (!empty($data['image']) && empty($data['text']) && ($data['type'] == 'photo')) {
 693                                         $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="attachment-image" /></a>', $data['url'], self::proxyUrl($data['image'], $simplehtml, $uriid), $data['title']);
 694                                 } else {
 695                                         if (!empty($data['image'])) {
 696                                                 $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="attachment-image" /></a><br>', $data['url'], self::proxyUrl($data['image'], $simplehtml, $uriid), $data['title']);
 697                                         } elseif (!empty($data['preview'])) {
 698                                                 $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="attachment-preview" /></a><br>', $data['url'], self::proxyUrl($data['preview'], $simplehtml, $uriid), $data['title']);
 699                                         }
 700                                         $return .= sprintf('<h4><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></h4>', $data['url'], $data['title']);
 701                                 }
 702                         }
 703
 704                         if (!empty($data['description']) && $data['description'] != $data['title']) {
 705                                 // Sanitize the HTML
 706                                 $return .= sprintf('<blockquote>%s</blockquote>', trim(HTML::purify($data['description'])));
 707                         }
 708
 709                         if (!empty($data['provider_url']) && !empty($data['provider_name'])) {
 710                                 if (!empty($data['author_name'])) {
 711                                         $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s (%s)</a></sup>', $data['provider_url'], $data['author_name'], $data['provider_name']);
 712                                 } else {
 713                                         $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></sup>', $data['provider_url'], $data['provider_name']);
 714                                 }
 715                         }
 716
 717                         if ($simplehtml != self::CONNECTORS) {
 718                                 $return .= '</div>';
 719                         }
 720                 }
 721
 722                 DI::profiler()->stopRecording();
 723                 return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
 724         }
 725
 726         public static function removeShareInformation(string $text, bool $plaintext = false, bool $nolink = false): string
 727         {
 728                 DI::profiler()->startRecording('rendering');
 729                 $data = self::getAttachmentData($text);
 730
 731                 if (!$data) {
 732                         DI::profiler()->stopRecording();
 733                         return $text;
 734                 } elseif ($nolink) {
 735                         DI::profiler()->stopRecording();
 736                         return $data['text'] . ($data['after'] ?? '');
 737                 }
 738
 739                 $title = htmlentities($data['title'] ?? '', ENT_QUOTES, 'UTF-8', false);
 740                 $text = htmlentities($data['text'], ENT_QUOTES, 'UTF-8', false);
 741                 if ($plaintext || (($title != '') && strstr($text, $title))) {
 742                         $data['title'] = $data['url'];
 743                 } elseif (($text != '') && strstr($title, $text)) {
 744                         $data['text'] = $data['title'];
 745                         $data['title'] = $data['url'];
 746                 }
 747
 748                 if (empty($data['text']) && !empty($data['title']) && empty($data['url'])) {
 749                         DI::profiler()->stopRecording();
 750                         return $data['title'] . $data['after'];
 751                 }
 752
 753                 // If the link already is included in the post, don't add it again
 754                 if (!empty($data['url']) && strpos($data['text'], $data['url'])) {
 755                         DI::profiler()->stopRecording();
 756                         return $data['text'] . $data['after'];
 757                 }
 758
 759                 $text = $data['text'];
 760
 761                 if (!empty($data['url']) && !empty($data['title'])) {
 762                         $text .= "\n[url=" . $data['url'] . ']' . $data['title'] . '[/url]';
 763                 } elseif (!empty($data['url'])) {
 764                         $text .= "\n[url]" . $data['url'] . '[/url]';
 765                 }
 766
 767                 DI::profiler()->stopRecording();
 768                 return $text . "\n" . $data['after'];
 769         }
 770
 771         /**
 772          * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
 773          *
 774          * @param array $match Array with the matching values
 775          * @return string reformatted link including HTML codes
 776          */
 777         private static function convertUrlForActivityPubCallback(array $match): string
 778         {
 779                 $url = $match[1];
 780
 781                 if (isset($match[2]) && ($match[1] != $match[2])) {
 782                         return $match[0];
 783                 }
 784
 785                 $parts = parse_url($url);
 786                 if (!isset($parts['scheme'])) {
 787                         return $match[0];
 788                 }
 789
 790                 return self::convertUrlForActivityPub($url);
 791         }
 792
 793         /**
 794          * Converts [url] BBCodes in a format that looks fine on ActivityPub systems.
 795          *
 796          * @param string $url URL that is about to be reformatted
 797          * @return string reformatted link including HTML codes
 798          */
 799         private static function convertUrlForActivityPub(string $url): string
 800         {
 801                 return sprintf('<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>', $url, self::getStyledURL($url));
 802         }
 803
 804         /**
 805          * Converts an URL in a nicer format (without the scheme and possibly shortened)
 806          *
 807          * @param string $url URL that is about to be reformatted
 808          * @return string reformatted link
 809          */
 810         private static function getStyledURL(string $url): string
 811         {
 812                 $parts = parse_url($url);
 813                 $scheme = $parts['scheme'] . '://';
 814                 $styled_url = str_replace($scheme, '', $url);
 815
 816                 if (strlen($styled_url) > 30) {
 817                         $styled_url = substr($styled_url, 0, 30) . "…";
 818                 }
 819
 820                 return $styled_url;
 821         }
 822
 823         /*
 824          * [noparse][i]italic[/i][/noparse] turns into
 825          * [noparse][ i ]italic[ /i ][/noparse],
 826          * to hide them from parser.
 827          *
 828          * @param array $match
 829          * @return string
 830          */
 831         private static function escapeNoparseCallback(array $match): string
 832         {
 833                 $whole_match = $match[0];
 834                 $captured = $match[1];
 835                 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
 836                 $new_str = str_replace($captured, $spacefied, $whole_match);
 837                 return $new_str;
 838         }
 839
 840         /*
 841          * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
 842          * now turns back and the [noparse] tags are trimed
 843          * returning [i]italic[/i]
 844          *
 845          * @param array $match
 846          * @return string
 847          */
 848         private static function unescapeNoparseCallback(array $match): string
 849         {
 850                 $captured = $match[1];
 851                 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
 852                 return $unspacefied;
 853         }
 854
 855         /**
 856          * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
 857          * occurrences
 858          *
 859          * @param string $text        Text to search
 860          * @param string $name        Tag name
 861          * @param int    $occurrences Number of first occurrences to skip
 862          * @return boolean|array
 863          */
 864         public static function getTagPosition(string $text, string $name, int $occurrences = 0)
 865         {
 866                 DI::profiler()->startRecording('rendering');
 867                 if ($occurrences < 0) {
 868                         $occurrences = 0;
 869                 }
 870
 871                 $start_open = -1;
 872                 for ($i = 0; $i <= $occurrences; $i++) {
 873                         if ($start_open !== false) {
 874                                 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
 875                         }
 876                 }
 877
 878                 if ($start_open === false) {
 879                         DI::profiler()->stopRecording();
 880                         return false;
 881                 }
 882
 883                 $start_equal = strpos($text, '=', $start_open);
 884                 $start_close = strpos($text, ']', $start_open);
 885
 886                 if ($start_close === false) {
 887                         DI::profiler()->stopRecording();
 888                         return false;
 889                 }
 890
 891                 $start_close++;
 892
 893                 $end_open = strpos($text, '[/' . $name . ']', $start_close);
 894
 895                 if ($end_open === false) {
 896                         DI::profiler()->stopRecording();
 897                         return false;
 898                 }
 899
 900                 $res = [
 901                         'start' => [
 902                                 'open' => $start_open,
 903                                 'close' => $start_close
 904                         ],
 905                         'end' => [
 906                                 'open' => $end_open,
 907                                 'close' => $end_open + strlen('[/' . $name . ']')
 908                         ],
 909                 ];
 910
 911                 if ($start_equal !== false) {
 912                         $res['start']['equal'] = $start_equal + 1;
 913                 }
 914
 915                 DI::profiler()->stopRecording();
 916                 return $res;
 917         }
 918
 919         /**
 920          * Performs a preg_replace within the boundaries of all named BBCode tags in a text
 921          *
 922          * @param string $pattern Preg pattern string
 923          * @param string $replace Preg replace string
 924          * @param string $name    BBCode tag name
 925          * @param string $text    Text to search
 926          * @return string
 927          */
 928         public static function pregReplaceInTag(string $pattern, string $replace, string $name, string $text): string
 929         {
 930                 DI::profiler()->startRecording('rendering');
 931                 $occurrences = 0;
 932                 $pos = self::getTagPosition($text, $name, $occurrences);
 933                 while ($pos !== false && $occurrences++ < 1000) {
 934                         $start = substr($text, 0, $pos['start']['open']);
 935                         $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
 936                         $end = substr($text, $pos['end']['close']);
 937                         if ($end === false) {
 938                                 $end = '';
 939                         }
 940
 941                         $subject = preg_replace($pattern, $replace, $subject);
 942                         $text = $start . $subject . $end;
 943
 944                         $pos = self::getTagPosition($text, $name, $occurrences);
 945                 }
 946
 947                 DI::profiler()->stopRecording();
 948                 return $text;
 949         }
 950
 951         private static function extractImagesFromItemBody(string $body): array
 952         {
 953                 $saved_image = [];
 954                 $orig_body = $body;
 955                 $new_body = '';
 956
 957                 $cnt = 0;
 958                 $img_start = strpos($orig_body, '[img');
 959                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 960                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 961                 while (($img_st_close !== false) && ($img_end !== false)) {
 962                         $img_st_close++; // make it point to AFTER the closing bracket
 963                         $img_end += $img_start;
 964
 965                         if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 966                                 // This is an embedded image
 967                                 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
 968                                 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
 969
 970                                 $cnt++;
 971                         } else {
 972                                 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
 973                         }
 974
 975                         $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
 976
 977                         if ($orig_body === false) {
 978                                 // in case the body ends on a closing image tag
 979                                 $orig_body = '';
 980                         }
 981
 982                         $img_start = strpos($orig_body, '[img');
 983                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 984                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 985                 }
 986
 987                 $new_body = $new_body . $orig_body;
 988
 989                 return ['body' => $new_body, 'images' => $saved_image];
 990         }
 991
 992         private static function interpolateSavedImagesIntoItemBody(int $uriid, string $body, array $images): string
 993         {
 994                 $newbody = $body;
 995
 996                 $cnt = 0;
 997                 foreach ($images as $image) {
 998                         // We're depending on the property of 'foreach' (specified on the PHP website) that
 999                         // it loops over the array starting from the first element and going sequentially
1000                         // to the last element
1001                         $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
1002                                 '<img src="' . self::proxyUrl($image, self::INTERNAL, $uriid) . '" alt="' . DI::l10n()->t('Image/photo') . '" />', $newbody);
1003                         $cnt++;
1004                 }
1005
1006                 return $newbody;
1007         }
1008
1009         /**
1010          * @param string $text A BBCode string
1011          * @return array Empty array if no share tag is present or the following array, missing attributes end up empty strings:
1012          *               - comment   : Text before the opening share tag
1013          *               - shared    : Text inside the share tags
1014          *               - author    : (Optional) Display name of the shared author
1015          *               - profile   : (Optional) Profile page URL of the shared author
1016          *               - avatar    : (Optional) Profile picture URL of the shared author
1017          *               - link      : (Optional) Canonical URL of the shared post
1018          *               - posted    : (Optional) Date the shared post was initially posted ("Y-m-d H:i:s" in GMT)
1019          *               - message_id: (Optional) Shared post URI if any
1020          *               - guid      : (Optional) Shared post GUID if any
1021          */
1022         public static function fetchShareAttributes(string $text): array
1023         {
1024                 DI::profiler()->startRecording('rendering');
1025                 if (preg_match('~(.*?)\[share](.*)\[/share]~ism', $text, $matches)) {
1026                         DI::profiler()->stopRecording();
1027                         return [
1028                                 'author'     => '',
1029                                 'profile'    => '',
1030                                 'avatar'     => '',
1031                                 'link'       => '',
1032                                 'posted'     => '',
1033                                 'guid'       => '',
1034                                 'message_id' => trim($matches[2]),
1035                                 'comment'    => trim($matches[1]),
1036                                 'shared'     => '',
1037                         ];
1038                 }
1039                 // See Issue https://github.com/friendica/friendica/issues/10454
1040                 // Hashtags in usernames are expanded to links. This here is a quick fix.
1041                 $text = preg_replace('~([@!#])\[url=.*?](.*?)\[/url]~ism', '$1$2', $text);
1042
1043                 if (!preg_match('~(.*?)\[share(.*?)](.*)\[/share]~ism', $text, $matches)) {
1044                         DI::profiler()->stopRecording();
1045                         return [];
1046                 }
1047
1048                 $attributes = self::extractShareAttributes($matches[2]);
1049
1050                 $attributes['comment'] = trim($matches[1]);
1051                 $attributes['shared'] = trim($matches[3]);
1052
1053                 DI::profiler()->stopRecording();
1054                 return $attributes;
1055         }
1056
1057         /**
1058          * @see BBCode::fetchShareAttributes()
1059          * @param string $shareString Internal opening share tag string matched by the regular expression
1060          * @return array A fixed attribute array where missing attribute are represented by empty strings
1061          */
1062         private static function extractShareAttributes(string $shareString): array
1063         {
1064                 $attributes = [];
1065                 foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid', 'message_id'] as $field) {
1066                         preg_match("/$field=(['\"])(.+?)\\1/ism", $shareString, $matches);
1067                         $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
1068                 }
1069
1070                 return $attributes;
1071         }
1072
1073         /**
1074          * Checks, if the provided body contains a native reshare
1075          *
1076          * @param string $body
1077          * @return boolean
1078          */
1079         public static function isNativeReshare(string $body): bool
1080         {
1081                 $shared = BBCode::fetchShareAttributes($body);
1082                 return !empty($shared['guid'] ?? '');
1083         }
1084
1085         /**
1086          * Checks if the provided body contains a "share" element
1087          *
1088          * @param string $body
1089          * @return boolean
1090          */
1091         public static function existsShare(string $body): bool
1092         {
1093                 $shared = BBCode::fetchShareAttributes($body);
1094                 return !empty($shared['link'] ?? '');
1095         }
1096
1097         /**
1098          * Replace the share block with a link
1099          *
1100          * @param string $body
1101          * @return string
1102          */
1103         public static function replaceSharedData(string $body): string
1104         {
1105                 return BBCode::convertShare(
1106                         $body,
1107                         function (array $attributes) {
1108                                 return '♲ ' . $attributes['link'];
1109                         }
1110                 );
1111         }
1112
1113         /**
1114          * Remove the share block
1115          *
1116          * @param string $body
1117          * @return string
1118          */
1119         public static function removeSharedData(string $body): string
1120         {
1121                 return trim(preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body));
1122         }
1123
1124         /**
1125          * This function converts a [share] block to text according to a provided callback function whose signature is:
1126          *
1127          * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
1128          *
1129          * Where:
1130          * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
1131          * data lookup
1132          * - $author_contact is a contact record array
1133          * - $content is the inner content of the [share] block
1134          * - $is_quote_share indicates whether there's any content before the [share] block
1135          * - Return value is the string that should replace the [share] block in the provided text
1136          *
1137          * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
1138          *
1139          * @param  string   $text     A BBCode string
1140          * @param  callable $callback
1141          * @return string The BBCode string with all [share] blocks replaced
1142          */
1143         public static function convertShare(string $text, callable $callback, int $uriid = 0): string
1144         {
1145                 DI::profiler()->startRecording('rendering');
1146                 $return = preg_replace_callback(
1147                         '~(.*?)\[share(.*?)](.*)\[/share]~ism',
1148                         function ($match) use ($callback, $uriid) {
1149                                 $attributes = self::extractShareAttributes($match[2]);
1150
1151                                 $author_contact = Contact::getByURL($attributes['profile'], false, ['id', 'url', 'addr', 'name', 'micro']);
1152                                 $author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
1153                                 $author_contact['addr'] = ($author_contact['addr'] ?? '');
1154
1155                                 $attributes['author']   = ($author_contact['name']  ?? '') ?: $attributes['author'];
1156                                 $attributes['avatar']   = ($author_contact['micro'] ?? '') ?: $attributes['avatar'];
1157                                 $attributes['profile']  = ($author_contact['url']   ?? '') ?: $attributes['profile'];
1158
1159                                 if (!empty($author_contact['id'])) {
1160                                         $attributes['avatar'] = Contact::getAvatarUrlForId($author_contact['id'], Proxy::SIZE_THUMB);
1161                                 } elseif ($attributes['avatar']) {
1162                                         $attributes['avatar'] = self::proxyUrl($attributes['avatar'], self::INTERNAL, $uriid, Proxy::SIZE_THUMB);
1163                                 }
1164
1165                                 $content = preg_replace(Strings::autoLinkRegEx(), '<a href="$1">$1</a>', $match[3]);
1166
1167                                 return $match[1] . $callback($attributes, $author_contact, $content, trim($match[1]) != '');
1168                         },
1169                         $text
1170                 );
1171
1172                 DI::profiler()->stopRecording();
1173                 return trim($return);
1174         }
1175
1176         /**
1177          * Convert complex IMG and ZMG elements
1178          *
1179          * @param [type] $text
1180          * @param integer $simplehtml
1181          * @param integer $uriid
1182          * @return string
1183          */
1184         private static function convertImages(string $text, int $simplehtml, int $uriid = 0): string
1185         {
1186                 DI::profiler()->startRecording('rendering');
1187                 $return = preg_replace_callback(
1188                         "/\[[zi]mg(.*?)\]([^\[\]]*)\[\/[zi]mg\]/ism",
1189                         function ($match) use ($simplehtml, $uriid) {
1190                                 $attribute_string = $match[1];
1191                                 $attributes = [];
1192                                 foreach (['alt', 'width', 'height'] as $field) {
1193                                         preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
1194                                         $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
1195                                 }
1196
1197                                 $img_str = '<img src="' .
1198                                 self::proxyUrl($match[2], $simplehtml, $uriid) . '"';
1199                                 foreach ($attributes as $key => $value) {
1200                                         if (!empty($value)) {
1201                                                 $img_str .= ' ' . $key . '="' . htmlspecialchars($value, ENT_COMPAT) . '"';
1202                                         }
1203                                 }
1204                                 return $img_str . '>';
1205                         },
1206                         $text
1207                 );
1208
1209                 DI::profiler()->stopRecording();
1210                 return $return;
1211         }
1212
1213         /**
1214          * Default [share] tag conversion callback
1215          *
1216          * Note: Can produce a [bookmark] tag in the output
1217          *
1218          * @see BBCode::convertShare()
1219          * @param array   $attributes     [share] block attribute values
1220          * @param array   $author_contact Contact row of the shared author
1221          * @param string  $content        Inner content of the [share] block
1222          * @param boolean $is_quote_share Whether there is content before the [share] block
1223          * @param integer $simplehtml     Mysterious integer value depending on the target network/formatting style
1224          * @return string
1225          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1226          */
1227         private static function convertShareCallback(array $attributes, array $author_contact, string $content, bool $is_quote_share, int $simplehtml): string
1228         {
1229                 DI::profiler()->startRecording('rendering');
1230                 $mention = $attributes['author'] . ' (' . ($author_contact['addr'] ?? '') . ')';
1231
1232                 switch ($simplehtml) {
1233                         case self::API:
1234                                 $text = ($is_quote_share? '<br>' : '') .
1235                                 '<b><a href="' . $attributes['link'] . '">' . html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . "</a>:</b><br>\n" .
1236                                 '<blockquote class="shared_content" dir="auto">' . $content . '</blockquote>';
1237                                 break;
1238                         case self::DIASPORA:
1239                                 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
1240                                         $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
1241                                 } else {
1242                                         $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
1243
1244                                         if (!empty($attributes['posted']) && !empty($attributes['link'])) {
1245                                                 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
1246                                         }
1247
1248                                         $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
1249
1250                                         if (empty($attributes['posted']) && !empty($attributes['link'])) {
1251                                                 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
1252                                         }
1253                                 }
1254
1255                                 break;
1256                         case self::CONNECTORS:
1257                                 $headline = '<p><b>' . html_entity_decode('&#x2672; ', ENT_QUOTES, 'UTF-8');
1258                                 $headline .= DI::l10n()->t('<a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
1259                                 $headline .= ':</b></p>' . "\n";
1260
1261                                 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content" dir="auto">' . trim($content) . '</blockquote>' . "\n";
1262
1263                                 break;
1264                         case self::OSTATUS:
1265                                 $text = ($is_quote_share? '<br>' : '') . '<p>' . html_entity_decode('&#x2672; ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
1266                                 break;
1267                         case self::ACTIVITYPUB:
1268                                 $author = '@<span class="vcard"><a href="' . $author_contact['url'] . '" class="url u-url mention" title="' . $author_contact['addr'] . '"><span class="fn nickname mention">' . $author_contact['addr'] . '</span></a>:</span>';
1269                                 $text = '<div><a href="' . $attributes['link'] . '">' . html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8') . '</a> ' . $author . '<blockquote>' . $content . '</blockquote></div>' . "\n";
1270                                 break;
1271                         default:
1272                                 $text = ($is_quote_share? "\n" : '');
1273
1274                                 $contact = Contact::getByURL($attributes['profile'], false, ['network']);
1275                                 $network = $contact['network'] ?? Protocol::PHANTOM;
1276
1277                                 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
1278                                 $text .= Renderer::replaceMacros($tpl, [
1279                                         '$profile'      => $attributes['profile'],
1280                                         '$avatar'       => $attributes['avatar'],
1281                                         '$author'       => $attributes['author'],
1282                                         '$link'         => $attributes['link'],
1283                                         '$link_title'   => DI::l10n()->t('Link to source'),
1284                                         '$posted'       => $attributes['posted'],
1285                                         '$guid'         => $attributes['guid'],
1286                                         '$network_name' => ContactSelector::networkToName($network, $attributes['profile']),
1287                                         '$network_icon' => ContactSelector::networkToIcon($network, $attributes['profile']),
1288                                         '$content'      => self::TOP_ANCHOR . self::setMentions(trim($content), 0, $network) . self::BOTTOM_ANCHOR,
1289                                 ]);
1290                                 break;
1291                 }
1292
1293                 return $text;
1294         }
1295
1296         private static function removePictureLinksCallback(array $match): string
1297         {
1298                 $cache_key = 'remove:' . $match[1];
1299                 $text = DI::cache()->get($cache_key);
1300
1301                 if (is_null($text)) {
1302                         $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1303                         if ($curlResult->isSuccess()) {
1304                                 $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1305                         } else {
1306                                 $mimetype = '';
1307                         }
1308
1309                         if (substr($mimetype, 0, 6) == 'image/') {
1310                                 $text = '[url=' . $match[1] . ']' . $match[1] . '[/url]';
1311                         } else {
1312                                 $text = '[url=' . $match[2] . ']' . $match[2] . '[/url]';
1313
1314                                 // if its not a picture then look if its a page that contains a picture link
1315                                 $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1316                                 if (empty($body)) {
1317                                         DI::cache()->set($cache_key, $text);
1318                                         return $text;
1319                                 }
1320
1321                                 $doc = new DOMDocument();
1322                                 @$doc->loadHTML($body);
1323                                 $xpath = new DOMXPath($doc);
1324                                 $list = $xpath->query('//meta[@name]');
1325                                 foreach ($list as $node) {
1326                                         $attr = [];
1327
1328                                         if ($node->attributes->length) {
1329                                                 foreach ($node->attributes as $attribute) {
1330                                                         $attr[$attribute->name] = $attribute->value;
1331                                                 }
1332                                         }
1333
1334                                         if (strtolower($attr['name']) == 'twitter:image') {
1335                                                 $text = '[url=' . $attr['content'] . ']' . $attr['content'] . '[/url]';
1336                                         }
1337                                 }
1338                         }
1339                         DI::cache()->set($cache_key, $text);
1340                 }
1341
1342                 return $text;
1343         }
1344
1345         /**
1346          * Callback: Expands links from given $match array
1347          *
1348          * @param arrat $match Array with link match
1349          * @return string BBCode
1350          */
1351         private static function expandLinksCallback(array $match): string
1352         {
1353                 if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1354                         return ($match[1] . '[url]' . $match[2] . '[/url]');
1355                 } else {
1356                         return ($match[1] . $match[3] . ' [url]' . $match[2] . '[/url]');
1357                 }
1358         }
1359
1360         /**
1361          * Callback: Cleans picture links
1362          *
1363          * @param arrat $match Array with link match
1364          * @return string BBCode
1365          */
1366         private static function cleanPictureLinksCallback(array $match): string
1367         {
1368                 // When the picture link is the own photo path then we can avoid fetching the link
1369                 $own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()->get()) . '/photos/');
1370                 if (preg_match('|' . $own_photo_url . '.*?/image/|', Strings::normaliseLink($match[1]))) {
1371                         if (!empty($match[3])) {
1372                                 $text = '[img=' . str_replace('-1.', '-0.', $match[2]) . ']' . $match[3] . '[/img]';
1373                         } else {
1374                                 $text = '[img]' . str_replace('-1.', '-0.', $match[2]) . '[/img]';
1375                         }
1376                         return $text;
1377                 }
1378
1379                 $cache_key = 'clean:' . $match[1];
1380                 $text = DI::cache()->get($cache_key);
1381                 if (!is_null($text)) {
1382                         return $text;
1383                 }
1384
1385                 $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1386                 if ($curlResult->isSuccess()) {
1387                         $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1388                 } else {
1389                         $mimetype = '';
1390                 }
1391
1392                 // if its a link to a picture then embed this picture
1393                 if (substr($mimetype, 0, 6) == 'image/') {
1394                         $text = '[img]' . $match[1] . '[/img]';
1395                 } else {
1396                         if (!empty($match[3])) {
1397                                 $text = '[img=' . $match[2] . ']' . $match[3] . '[/img]';
1398                         } else {
1399                                 $text = '[img]' . $match[2] . '[/img]';
1400                         }
1401
1402                         // if its not a picture then look if its a page that contains a picture link
1403                         $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1404                         if (empty($body)) {
1405                                 DI::cache()->set($cache_key, $text);
1406                                 return $text;
1407                         }
1408
1409                         $doc = new DOMDocument();
1410                         @$doc->loadHTML($body);
1411                         $xpath = new DOMXPath($doc);
1412                         $list = $xpath->query('//meta[@name]');
1413                         foreach ($list as $node) {
1414                                 $attr = [];
1415                                 if ($node->attributes->length) {
1416                                         foreach ($node->attributes as $attribute) {
1417                                                 $attr[$attribute->name] = $attribute->value;
1418                                         }
1419                                 }
1420
1421                                 if (strtolower($attr['name']) == "twitter:image") {
1422                                         if (!empty($match[3])) {
1423                                                 $text = "[img=" . $attr['content'] . "]" . $match[3] . "[/img]";
1424                                         } else {
1425                                                 $text = "[img]" . $attr['content'] . "[/img]";
1426                                         }
1427                                 }
1428                         }
1429                 }
1430                 DI::cache()->set($cache_key, $text);
1431
1432                 return $text;
1433         }
1434
1435         /**
1436          * Cleans picture links
1437          *
1438          * @param string $text HTML/BBCode string
1439          * @return string Cleaned HTML/BBCode
1440          */
1441         public static function cleanPictureLinks(string $text): string
1442         {
1443                 DI::profiler()->startRecording('rendering');
1444                 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1445                 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $return);
1446                 DI::profiler()->stopRecording();
1447                 return $return;
1448         }
1449
1450         /**
1451          * Removes links
1452          *
1453          * @param string $text HTML/BBCode string
1454          * @return string Cleaned HTML/BBCode
1455          */
1456         public static function removeLinks(string $bbcode): string
1457         {
1458                 DI::profiler()->startRecording('rendering');
1459                 $bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
1460                 $bbcode = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $bbcode);
1461
1462                 $bbcode = preg_replace('/[@!#]\[url\=.*?\].*?\[\/url\]/ism', '', $bbcode);
1463                 $bbcode = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $bbcode);
1464                 $bbcode = preg_replace('/[@!#]?\[url.*?\[\/url\]/ism', '', $bbcode);
1465                 DI::profiler()->stopRecording();
1466                 return $bbcode;
1467         }
1468
1469         /**
1470          * Replace names in mentions with nicknames
1471          *
1472          * @param string $body HTML/BBCode
1473          * @return string Body with replaced mentions
1474          */
1475         public static function setMentionsToNicknames(string $body): string
1476         {
1477                 DI::profiler()->startRecording('rendering');
1478                 $regexp = "/([@!])\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1479                 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1480                 DI::profiler()->stopRecording();
1481                 return $body;
1482         }
1483
1484         /**
1485          * Callback function to replace a Friendica style mention in a mention with the nickname
1486          *
1487          * @param array $match Matching values for the callback
1488          * @return string Replaced mention or empty string
1489          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1490          */
1491         private static function mentionCallback(array $match): string
1492         {
1493                 if (empty($match[2])) {
1494                         return '';
1495                 }
1496
1497                 $data = Contact::getByURL($match[2], false, ['url', 'nick']);
1498                 if (empty($data['nick'])) {
1499                         return $match[0];
1500                 }
1501
1502                 return $match[1] . '[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
1503         }
1504
1505         /**
1506          * Converts a BBCode message for a given URI-ID to a HTML message
1507          *
1508          * BBcode 2 HTML was written by WAY2WEB.net
1509          * extended to work with Mistpark/Friendica - Mike Macgirvin
1510          *
1511          * Simple HTML values meaning:
1512          * - 0: Friendica display
1513          * - 1: Unused
1514          * - 2: Used for Windows Phone push, Friendica API
1515          * - 3: Used before converting to Markdown in bb2diaspora.php
1516          * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1517          * - 5: Unused
1518          * - 6: Unused
1519          * - 7: Used for dfrn, OStatus
1520          * - 8: Used for Twitter, WP backlink text setting
1521          * - 9: ActivityPub
1522          *
1523          * @param int    $uriid
1524          * @param string $text
1525          * @param int    $simple_html
1526          * @return string
1527          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1528          */
1529         public static function convertForUriId(int $uriid = null, string $text = null, int $simple_html = self::INTERNAL): string
1530         {
1531                 $try_oembed = ($simple_html == self::INTERNAL);
1532
1533                 return self::convert($text ?? '', $try_oembed, $simple_html, false, $uriid ?? 0);
1534         }
1535
1536         /**
1537          * Converts a BBCode message to HTML message
1538          *
1539          * BBcode 2 HTML was written by WAY2WEB.net
1540          * extended to work with Mistpark/Friendica - Mike Macgirvin
1541          *
1542          * Simple HTML values meaning:
1543          * - 0: Friendica display
1544          * - 1: Unused
1545          * - 2: Used for Windows Phone push, Friendica API
1546          * - 3: Used before converting to Markdown in bb2diaspora.php
1547          * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1548          * - 5: Unused
1549          * - 6: Unused
1550          * - 7: Used for dfrn, OStatus
1551          * - 8: Used for Twitter, WP backlink text setting
1552          * - 9: ActivityPub
1553          *
1554          * @param string $text
1555          * @param bool   $try_oembed
1556          * @param int    $simple_html
1557          * @param bool   $for_plaintext
1558          * @param int    $uriid
1559          * @return string Converted code or empty string
1560          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1561          */
1562         public static function convert(string $text = null, bool $try_oembed = true, int $simple_html = self::INTERNAL, bool $for_plaintext = false, int $uriid = 0): string
1563         {
1564                 // Accounting for null default column values
1565                 if (is_null($text) || $text === '') {
1566                         return '';
1567                 }
1568
1569                 DI::profiler()->startRecording('rendering');
1570
1571                 Hook::callAll('bbcode', $text);
1572
1573                 $a = DI::app();
1574
1575                 $text = self::performWithEscapedTags($text, ['code'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1576                         $text = self::performWithEscapedTags($text, ['noparse', 'nobb', 'pre'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1577                                 /*
1578                                  * preg_match_callback function to replace potential Oembed tags with Oembed content
1579                                  *
1580                                  * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1581                                  * $match[1] = $url
1582                                  * $match[2] = $title or absent
1583                                  */
1584                                 $try_oembed_callback = function (array $match)
1585                                 {
1586                                         $url = $match[1];
1587                                         $title = $match[2] ?? '';
1588
1589                                         try {
1590                                                 $return = OEmbed::getHTML($url, $title);
1591                                         } catch (Exception $ex) {
1592                                                 $return = $match[0];
1593                                         }
1594
1595                                         return $return;
1596                                 };
1597
1598                                 // Remove the abstract element. It is a non visible element.
1599                                 $text = self::stripAbstract($text);
1600
1601                                 // Line ending normalisation
1602                                 $text = str_replace("\r\n", "\n", $text);
1603
1604                                 // Move new lines outside of tags
1605                                 $text = preg_replace("#\[(\w*)](\n*)#ism", '$2[$1]', $text);
1606                                 $text = preg_replace("#(\n*)\[/(\w*)]#ism", '[/$2]$1', $text);
1607
1608                                 // Extract the private images which use data urls since preg has issues with
1609                                 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1610                                 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1611
1612                                 $extracted = self::extractImagesFromItemBody($text);
1613                                 $text = $extracted['body'];
1614                                 $saved_image = $extracted['images'];
1615
1616                                 // If we find any event code, turn it into an event.
1617                                 // After we're finished processing the bbcode we'll
1618                                 // replace all of the event code with a reformatted version.
1619
1620                                 $ev = Event::fromBBCode($text);
1621
1622                                 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1623                                 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1624
1625                                 $text = str_replace("<", "&lt;", $text);
1626                                 $text = str_replace(">", "&gt;", $text);
1627
1628                                 // remove some newlines before the general conversion
1629                                 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
1630                                 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
1631
1632                                 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1633                                 if (!$try_oembed) {
1634                                         $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1635                                 }
1636
1637                                 // Remove linefeeds inside of the table elements. See issue #6799
1638                                 $search = ["\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1639                                         "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1640                                         "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1641                                         "\n[hr]", "[hr]\n", " [hr]", "[hr] ",
1642                                         "\n[attachment ", " [attachment ", "\n[/attachment]", "[/attachment]\n", " [/attachment]", "[/attachment] ",
1643                                         "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] "];
1644                                 $replace = ["[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1645                                         "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1646                                         "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1647                                         "[hr]", "[hr]", "[hr]", "[hr]",
1648                                         "[attachment ", "[attachment ", "[/attachment]", "[/attachment]", "[/attachment]", "[/attachment]",
1649                                         "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]"];
1650                                 do {
1651                                         $oldtext = $text;
1652                                         $text = str_replace($search, $replace, $text);
1653                                 } while ($oldtext != $text);
1654
1655                                 // Replace these here only once
1656                                 $search = ["\n[table]", "[/table]\n"];
1657                                 $replace = ["[table]", "[/table]"];
1658                                 $text = str_replace($search, $replace, $text);
1659
1660                                 // Trim new lines regardless of the system.remove_multiplicated_lines config value
1661                                 $text = trim($text, "\n");
1662
1663                                 // removing multiplicated newlines
1664                                 if (DI::config()->get('system', 'remove_multiplicated_lines')) {
1665                                         $search = ["\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[*]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
1666                                                         "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1667                                         $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[*]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1668                                                         "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1669                                         do {
1670                                                 $oldtext = $text;
1671                                                 $text = str_replace($search, $replace, $text);
1672                                         } while ($oldtext != $text);
1673                                 }
1674
1675                                 /// @todo Have a closer look at the different html modes
1676                                 // Handle attached links or videos
1677                                 if (in_array($simple_html, [self::API, self::ACTIVITYPUB])) {
1678                                         $text = self::removeAttachment($text);
1679                                 } elseif (!in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::CONNECTORS])) {
1680                                         $text = self::removeAttachment($text, true);
1681                                 } else {
1682                                         $text = self::convertAttachment($text, $simple_html, $try_oembed, [], $uriid);
1683                                 }
1684
1685                                 $nosmile = strpos($text, '[nosmile]') !== false;
1686                                 $text = str_replace('[nosmile]', '', $text);
1687
1688                                 // Replace non graphical smilies for external posts
1689                                 if (!$nosmile) {
1690                                         $text = self::performWithEscapedTags($text, ['img'], function ($text) use ($simple_html, $for_plaintext) {
1691                                                 return Smilies::replace($text, ($simple_html != self::INTERNAL) || $for_plaintext);
1692                                         });
1693                                 }
1694
1695                                 // leave open the posibility of [map=something]
1696                                 // this is replaced in Item::prepareBody() which has knowledge of the item location
1697                                 if (strpos($text, '[/map]') !== false) {
1698                                         $text = preg_replace_callback(
1699                                                 "/\[map\](.*?)\[\/map\]/ism",
1700                                                 function ($match) use ($simple_html) {
1701                                                         return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1702                                                 },
1703                                                 $text
1704                                         );
1705                                 }
1706
1707                                 if (strpos($text, '[map=') !== false) {
1708                                         $text = preg_replace_callback(
1709                                                 "/\[map=(.*?)\]/ism",
1710                                                 function ($match) use ($simple_html) {
1711                                                         return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1712                                                 },
1713                                                 $text
1714                                         );
1715                                 }
1716
1717                                 if (strpos($text, '[map]') !== false) {
1718                                         $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1719                                 }
1720
1721                                 // Check for headers
1722                                 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1723                                 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1724                                 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1725                                 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1726                                 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1727                                 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
1728
1729                                 // Check for paragraph
1730                                 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1731
1732                                 // Check for bold text
1733                                 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1734
1735                                 // Check for Italics text
1736                                 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1737
1738                                 // Check for Underline text
1739                                 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1740
1741                                 // Check for strike-through text
1742                                 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1743
1744                                 // Check for over-line text
1745                                 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1746
1747                                 // Check for colored text
1748                                 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1749
1750                                 // Check for sized text
1751                                 // [size=50] --> font-size: 50px (with the unit).
1752                                 if ($simple_html != self::DIASPORA) {
1753                                         $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1px;line-height:normal;">$2</span>', $text);
1754                                         $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1;line-height:normal;">$2</span>', $text);
1755                                 } else {
1756                                         // Issue 2199: Diaspora doesn't interpret the construct above, nor the <small> or <big> element
1757                                         $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "$2", $text);
1758                                 }
1759
1760
1761                                 // Check for centered text
1762                                 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", '<div style="text-align:center;">$1</div>', $text);
1763
1764                                 // Check for list text
1765                                 $text = str_replace("[*]", "<li>", $text);
1766
1767                                 // Check for block-level custom CSS
1768                                 $text = preg_replace('#(?<=^|\n)\[style=(.*?)](.*?)\[/style](?:\n|$)#ism', '<div style="$1">$2</div>', $text);
1769
1770                                 // Check for inline custom CSS
1771                                 $text = preg_replace("(\[style=(.*?)\](.*?)\[\/style\])ism", '<span style="$1">$2</span>', $text);
1772
1773                                 // Mastodon Emoji (internal tag, do not document for users)
1774                                 $text = preg_replace("(\[emoji=(.*?)](.*?)\[/emoji])ism", '<span class="mastodon emoji"><img src="$1" alt="$2" title="$2"/></span>', $text);
1775
1776                                 // Check for CSS classes
1777                                 // @deprecated since 2021.12, left for backward-compatibility reasons
1778                                 $text = preg_replace("(\[class=(.*?)\](.*?)\[\/class\])ism", '<span class="$1">$2</span>', $text);
1779                                 // Add HTML new lines
1780                                 $text = str_replace("\n", '<br>', $text);
1781
1782                                 // handle nested lists
1783                                 $endlessloop = 0;
1784
1785                                 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1786                                                 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1787                                                 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1788                                                 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1789                                         $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1790                                         $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1791                                         $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1792                                         $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1793                                         $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1794                                         $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1795                                         $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1796                                         $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1797                                         $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1798                                         $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1799                                 }
1800
1801                                 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1802                                 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1803                                 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1804                                 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
1805
1806                                 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1807                                 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1808
1809                                 $text = str_replace('[hr]', '<hr />', $text);
1810
1811                                 if (!$for_plaintext) {
1812                                         $text = self::performWithEscapedTags($text, ['url', 'img', 'audio', 'video', 'youtube', 'vimeo', 'share', 'attachment', 'iframe', 'bookmark'], function ($text) {
1813                                                 return preg_replace(Strings::autoLinkRegEx(), '[url]$1[/url]', $text);
1814                                         });
1815                                 }
1816
1817                                 // Check for font change text
1818                                 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1819
1820                                 // Declare the format for [spoiler] layout
1821                                 $SpoilerLayout = '<details class="spoiler"><summary>' . DI::l10n()->t('Click to open/close') . '</summary>$1</details>';
1822
1823                                 // Check for [spoiler] text
1824                                 // handle nested quotes
1825                                 $endlessloop = 0;
1826                                 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1827                                         $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", $SpoilerLayout, $text);
1828                                 }
1829
1830                                 // Check for [spoiler=Title] text
1831
1832                                 // handle nested quotes
1833                                 $endlessloop = 0;
1834                                 while ((strpos($text, "[/spoiler]")!== false)  && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1835                                         $text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1836                                                 '<details class="spoiler"><summary>$1</summary>$2</details>',
1837                                                 $text);
1838                                 }
1839
1840                                 // Declare the format for [quote] layout
1841                                 $QuoteLayout = '<blockquote>$1</blockquote>';
1842
1843                                 // Check for [quote] text
1844                                 // handle nested quotes
1845                                 $endlessloop = 0;
1846                                 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1847                                         $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1848                                 }
1849
1850                                 // Check for [quote=Author] text
1851
1852                                 $t_wrote = DI::l10n()->t('$1 wrote:');
1853
1854                                 // handle nested quotes
1855                                 $endlessloop = 0;
1856                                 while ((strpos($text, "[/quote]")!== false)  && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1857                                         $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1858                                                 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1859                                                 $text);
1860                                 }
1861
1862
1863                                 // [img=widthxheight]image source[/img]
1864                                 $text = preg_replace_callback(
1865                                         "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1866                                         function ($matches) use ($simple_html, $uriid) {
1867                                                 if (strpos($matches[3], "data:image/") === 0) {
1868                                                         return $matches[0];
1869                                                 }
1870
1871                                                 $matches[3] = self::proxyUrl($matches[3], $simple_html, $uriid);
1872                                                 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1873                                         },
1874                                         $text
1875                                 );
1876
1877                                 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1878                                 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1879
1880                                 $text = preg_replace_callback("/\[img\=(.*?)\](.*?)\[\/img\]/ism",
1881                                         function ($matches) use ($simple_html, $uriid) {
1882                                                 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1883                                                 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1884                                                 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '" title="' . $matches[2] . '">';
1885                                         },
1886                                         $text);
1887
1888                                 // Images
1889                                 // [img]pathtoimage[/img]
1890                                 $text = preg_replace_callback(
1891                                         "/\[img\](.*?)\[\/img\]/ism",
1892                                         function ($matches) use ($simple_html, $uriid) {
1893                                                 if (strpos($matches[1], "data:image/") === 0) {
1894                                                         return $matches[0];
1895                                                 }
1896
1897                                                 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1898                                                 return "[img]" . $matches[1] . "[/img]";
1899                                         },
1900                                         $text
1901                                 );
1902
1903                                 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1904                                 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1905
1906                                 $text = self::convertImages($text, $simple_html, $uriid);
1907
1908                                 $text = preg_replace("/\[crypt\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . DI::l10n()->t('Encrypted content') . '" /><br>', $text);
1909                                 $text = preg_replace("/\[crypt(.*?)\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . '$1' . ' ' . DI::l10n()->t('Encrypted content') . '" /><br>', $text);
1910                                 //$text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . '$1' . ' ' . DI::l10n()->t('Encrypted content') . '" /><br>', $text);
1911
1912                                 // Simplify "video" element
1913                                 $text = preg_replace('(\[video[^\]]*?\ssrc\s?=\s?([^\s\]]+)[^\]]*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
1914
1915                                 if ($try_oembed) {
1916                                         // html5 video and audio
1917                                         $text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism",
1918                                                 '<video src="$1" controls width="100%" height="auto"><a href="$1">$1</a></video>', $text);
1919
1920                                         $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1921                                         $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1922
1923                                         $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1924                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1925                                         $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism", '<audio src="$1" controls><a href="$1">$1</a></audio>', $text);
1926                                 } else {
1927                                         $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1928                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1929                                         $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1930                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1931                                 }
1932
1933                                 // Backward compatibility, [iframe] support has been removed in version 2020.12
1934                                 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1935
1936                                 // Youtube extensions
1937                                 if ($try_oembed) {
1938                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1939                                         $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1940                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/shorts\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1941                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1942                                 }
1943
1944                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1945                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1946                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/shorts\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1947                                 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1948
1949                                 if ($try_oembed) {
1950                                         $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", '<iframe width="' . $a->getThemeInfoValue('videowidth') . '" height="' . $a->getThemeInfoValue('videoheight') . '" src="https://www.youtube.com/embed/$1" frameborder="0" ></iframe>', $text);
1951                                 } else {
1952                                         $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1953                                                 '<a href="https://www.youtube.com/watch?v=$1" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=$1</a>', $text);
1954                                 }
1955
1956                                 if ($try_oembed) {
1957                                         $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1958                                         $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1959                                 }
1960
1961                                 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1962                                 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1963
1964                                 if ($try_oembed) {
1965                                         $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", '<iframe width="' . $a->getThemeInfoValue('videowidth') . '" height="' . $a->getThemeInfoValue('videoheight') . '" src="https://player.vimeo.com/video/$1" frameborder="0" ></iframe>', $text);
1966                                 } else {
1967                                         $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1968                                                 '<a href="https://vimeo.com/$1" target="_blank" rel="noopener noreferrer">https://vimeo.com/$1</a>', $text);
1969                                 }
1970
1971                                 // oembed tag
1972                                 $text = OEmbed::BBCode2HTML($text);
1973
1974                                 // Avoid triple linefeeds through oembed
1975                                 $text = str_replace("<br style='clear:left'></span><br><br>", "<br style='clear:left'></span><br>", $text);
1976
1977                                 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1978                                 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1979                                 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1980                                 // start which is always required). Allow desc with a missing summary for compatibility.
1981
1982                                 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1983                                         $sub = Event::getHTML($ev, $simple_html, $uriid);
1984
1985                                         $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1986                                         $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1987                                         $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1988                                         $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1989                                         $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1990                                         $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1991                                 }
1992
1993                                 if (!$for_plaintext && DI::config()->get('system', 'big_emojis') && ($simple_html != self::DIASPORA)) {
1994                                         $conv = html_entity_decode(str_replace([' ', "\n", "\r"], '', $text));
1995                                         // Emojis are always 4 byte Unicode characters
1996                                         if (!empty($conv) && (strlen($conv) / mb_strlen($conv) == 4)) {
1997                                                 $text = '<span style="font-size: xx-large; line-height: normal;">' . $text . '</span>';
1998                                         }
1999                                 }
2000
2001                                 // Handle mentions and hashtag links
2002                                 if ($simple_html == self::DIASPORA) {
2003                                         // The ! is converted to @ since Diaspora only understands the @
2004                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
2005                                                 '@<a href="$2">$3</a>',
2006                                                 $text);
2007                                 } elseif (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
2008                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
2009                                                 '<span class="h-card"><a href="$2" class="u-url mention">$1<span>$3</span></a></span>',
2010                                                 $text);
2011                                         $text = preg_replace("/([#])\[url\=(.*?)\](.*?)\[\/url\]/ism",
2012                                                 '<a href="$2" class="mention hashtag" rel="tag">$1<span>$3</span></a>',
2013                                                 $text);
2014                                 } elseif (in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::API])) {
2015                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
2016                                                 '<bdi>$1<a href="$2" class="userinfo mention" title="$3">$3</a></bdi>',
2017                                                 $text);
2018                                 } else {
2019                                         $text = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $text);
2020                                 }
2021
2022                                 if (!$for_plaintext) {
2023                                         if (in_array($simple_html, [self::OSTATUS, self::API, self::ACTIVITYPUB])) {
2024                                                 $text = preg_replace_callback("/\[url\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
2025                                                 $text = preg_replace_callback("/\[url\=(.*?)\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
2026                                         }
2027                                 } else {
2028                                         $text = preg_replace("(\[url\](.*?)\[\/url\])ism", " $1 ", $text);
2029                                         $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
2030                                 }
2031
2032                                 // Bookmarks in red - will be converted to bookmarks in friendica
2033                                 $text = preg_replace("/#\^\[url\](.*?)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
2034                                 $text = preg_replace("/#\^\[url\=(.*?)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
2035                                 $text = preg_replace("/#\[url\=.*?\]\^\[\/url\]\[url\=(.*?)\](.*?)\[\/url\]/i",
2036                                                         "[bookmark=$1]$2[/bookmark]", $text);
2037
2038                                 if (in_array($simple_html, [self::OSTATUS, self::TWITTER])) {
2039                                         $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
2040                                         //$text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $text);
2041                                         $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]', $text);
2042                                 }
2043
2044                                 // Perform URL Search
2045                                 if ($try_oembed) {
2046                                         $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
2047                                 }
2048
2049                                 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
2050
2051                                 // Handle Diaspora posts
2052                                 $text = preg_replace_callback(
2053                                         "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
2054                                         function ($match) {
2055                                                 return "[url=" . DI::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
2056                                         }, $text
2057                                 );
2058
2059                                 $text = preg_replace_callback(
2060                                         "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
2061                                         function ($match) {
2062                                                 return "[url=" . DI::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
2063                                         }, $text
2064                                 );
2065
2066                                 // Server independent link to posts and comments
2067                                 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
2068                                 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
2069                                 $text = preg_replace($expression, DI::baseUrl()."/display/$1", $text);
2070
2071                                 /* Tag conversion
2072                                  * Supports:
2073                                  * - #[url=<anything>]<term>[/url]
2074                                  * - [url=<anything>]#<term>[/url]
2075                                  */
2076                                 self::performWithEscapedTags($text, ['url', 'share'], function ($text) use ($simple_html) {
2077                                         $text = preg_replace_callback("/(?:#\[url\=[^\[\]]*\]|\[url\=[^\[\]]*\]#)(.*?)\[\/url\]/ism", function($matches) use ($simple_html) {
2078                                                 if ($simple_html == self::ACTIVITYPUB) {
2079                                                         return '<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
2080                                                                 . '" data-tag="' . XML::escape($matches[1]) . '" rel="tag ugc">#'
2081                                                                 . XML::escape($matches[1]) . '</a>';
2082                                                 } else {
2083                                                         return '#<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
2084                                                                 . '" class="tag" rel="tag" title="' . XML::escape($matches[1]) . '">'
2085                                                                 . XML::escape($matches[1]) . '</a>';
2086                                                 }
2087                                         }, $text);
2088                                         return $text;
2089                                 });
2090
2091                                 // We need no target="_blank" rel="noopener noreferrer" for local links
2092                                 // convert links start with DI::baseUrl() as local link without the target="_blank" rel="noopener noreferrer" attribute
2093                                 $escapedBaseUrl = preg_quote(DI::baseUrl(), '/');
2094                                 $text = preg_replace("/\[url\](".$escapedBaseUrl.".*?)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
2095                                 $text = preg_replace("/\[url\=(".$escapedBaseUrl.".*?)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
2096
2097                                 $text = preg_replace("/\[url\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
2098                                 $text = preg_replace("/\[url\=(.*?)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
2099
2100                                 // Red compatibility, though the link can't be authenticated on Friendica
2101                                 $text = preg_replace("/\[zrl\=(.*?)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
2102
2103
2104                                 // we may need to restrict this further if it picks up too many strays
2105                                 // link acct:user@host to a webfinger profile redirector
2106
2107                                 $text = preg_replace('/acct:([^@]+)@((?!\-)(?:[a-zA-Z\d\-]{0,62}[a-zA-Z\d]\.){1,126}(?!\d+)[a-zA-Z\d]{1,63})/', '<a href="' . DI::baseUrl() . '/acctlink?addr=$1@$2" target="extlink">acct:$1@$2</a>', $text);
2108
2109                                 // Perform MAIL Search
2110                                 $text = preg_replace("/\[mail\](.*?)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
2111                                 $text = preg_replace("/\[mail\=(.*?)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
2112
2113                                 /// @todo What is the meaning of these lines?
2114                                 $text = preg_replace('/\[\&amp\;([#a-z0-9]+)\;\]/', '&$1;', $text);
2115                                 $text = preg_replace('/\&\#039\;/', '\'', $text);
2116
2117                                 // Currently deactivated, it made problems with " inside of alt texts.
2118                                 //$text = preg_replace('/\&quot\;/', '"', $text);
2119
2120                                 // fix any escaped ampersands that may have been converted into links
2121                                 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
2122
2123                                 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
2124                                 $allowed_src_protocols = ['//', 'http://', 'https://', 'redir/', 'cid:'];
2125
2126                                 array_walk($allowed_src_protocols, function(&$value) { $value = preg_quote($value, '#');});
2127
2128                                 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
2129                                                          '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . DI::l10n()->t('Invalid source protocol') . '">', $text);
2130
2131                                 // sanitize href attributes (only allowlisted protocols URLs)
2132                                 // default value for backward compatibility
2133                                 $allowed_link_protocols = DI::config()->get('system', 'allowed_link_protocols', []);
2134
2135                                 // Always allowed protocol even if config isn't set or not including it
2136                                 $allowed_link_protocols[] = '//';
2137                                 $allowed_link_protocols[] = 'http://';
2138                                 $allowed_link_protocols[] = 'https://';
2139                                 $allowed_link_protocols[] = 'redir/';
2140
2141                                 array_walk($allowed_link_protocols, function(&$value) { $value = preg_quote($value, '#');});
2142
2143                                 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
2144                                 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . DI::l10n()->t('Invalid link protocol') . '">', $text);
2145
2146                                 // Shared content
2147                                 $text = self::convertShare(
2148                                         $text,
2149                                         function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
2150                                                 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
2151                                         }, $uriid
2152                                 );
2153
2154                                 $text = self::interpolateSavedImagesIntoItemBody($uriid, $text, $saved_image);
2155
2156                                 return $text;
2157                         }); // Escaped noparse, nobb, pre
2158
2159                         // Remove escaping tags and replace new lines that remain
2160                         $text = preg_replace_callback('/\[(noparse|nobb)](.*?)\[\/\1]/ism', function ($match) {
2161                                 return str_replace("\n", "<br>", $match[2]);
2162                         }, $text);
2163
2164                         // Additionally, [pre] tags preserve spaces
2165                         $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", function ($match) {
2166                                 return str_replace([' ', "\n"], ['&nbsp;', "<br>"], htmlentities($match[1], ENT_NOQUOTES,'UTF-8'));
2167                         }, $text);
2168
2169                         return $text;
2170                 }); // Escaped code
2171
2172                 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
2173                         function ($matches) {
2174                                 if (strpos($matches[2], "\n") !== false) {
2175                                         $return = '<pre><code class="language-' . trim($matches[1]) . '">' . htmlentities(trim($matches[2], "\n\r"), ENT_NOQUOTES, 'UTF-8') . '</code></pre>';
2176                                 } else {
2177                                         $return = '<code>' . htmlentities($matches[2], ENT_NOQUOTES, 'UTF-8') . '</code>';
2178                                 }
2179
2180                                 return $return;
2181                         },
2182                         $text
2183                 );
2184
2185                 // Default iframe allowed domains/path
2186                 $allowedIframeDomains = [
2187                         DI::baseUrl()->getHostname()
2188                         . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : '')
2189                         . '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
2190                         'www.youtube.com/embed/',
2191                         'player.vimeo.com/video/',
2192                 ];
2193
2194                 $allowedIframeDomains = array_merge(
2195                         $allowedIframeDomains,
2196                         DI::config()->get('system', 'allowed_oembed') ?
2197                                 explode(',', DI::config()->get('system', 'allowed_oembed'))
2198                                 : []
2199                 );
2200
2201                 $text = HTML::purify($text, $allowedIframeDomains);
2202                 DI::profiler()->stopRecording();
2203
2204                 return trim($text);
2205         }
2206
2207         /**
2208          * Strips the "abstract" tag from the provided text
2209          *
2210          * @param string $text The text with BBCode
2211          * @return string The same text - but without "abstract" element
2212          */
2213         public static function stripAbstract(string $text): string
2214         {
2215                 DI::profiler()->startRecording('rendering');
2216
2217                 $text = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) {
2218                         $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", ' ', $text);
2219                         $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", ' ', $text);
2220                         return $text;
2221                 });
2222
2223                 DI::profiler()->stopRecording();
2224                 return $text;
2225         }
2226
2227         /**
2228          * Returns the value of the "abstract" element
2229          *
2230          * @param string $text  The text that maybe contains the element
2231          * @param string $addon The addon for which the abstract is meant for
2232          * @return string The abstract
2233          */
2234         public static function getAbstract(string $text, string $addon = ''): string
2235         {
2236                 DI::profiler()->startRecording('rendering');
2237                 $addon = strtolower($addon);
2238
2239                 $abstract = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) use ($addon) {
2240                         if ($addon && preg_match('#\[abstract=' . preg_quote($addon, '#') . '](.*?)\[/abstract]#ism', $text, $matches)) {
2241                                 return $matches[1];
2242                         }
2243
2244                         if (preg_match("#\[abstract](.*?)\[/abstract]#ism", $text, $matches)) {
2245                                 return $matches[1];
2246                         }
2247
2248                         return '';
2249                 });
2250
2251                 DI::profiler()->stopRecording();
2252                 return $abstract;
2253         }
2254
2255         /**
2256          * Callback function to replace a Friendica style mention in a mention for Diaspora
2257          *
2258          * @param array $match Matching values for the callback
2259          *                     [1] = Mention type (! or @)
2260          *                     [2] = Name
2261          *                     [3] = Address
2262          * @return string Replaced mention
2263          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2264          * @throws \ImagickException
2265          */
2266         private static function bbCodeMention2DiasporaCallback(array $match): string
2267         {
2268                 $contact = Contact::getByURL($match[3], false, ['addr']);
2269                 if (empty($contact['addr'])) {
2270                         return $match[0];
2271                 }
2272
2273                 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
2274                 return $mention;
2275         }
2276
2277         /**
2278          * Converts a BBCode text into Markdown
2279          *
2280          * This function converts a BBCode item body to be sent to Markdown-enabled
2281          * systems like Diaspora and Libertree
2282          *
2283          * @param string $text
2284          * @param bool   $for_diaspora Diaspora requires more changes than Libertree
2285          * @return string
2286          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2287          */
2288         public static function toMarkdown(string $text, bool $for_diaspora = true): string
2289         {
2290                 DI::profiler()->startRecording('rendering');
2291                 $original_text = $text;
2292
2293                 // Since Diaspora is creating a summary for links, this function removes them before posting
2294                 if ($for_diaspora) {
2295                         $text = self::removeShareInformation($text);
2296                 }
2297
2298                 /**
2299                  * Transform #tags, strip off the [url] and replace spaces with underscore
2300                  */
2301                 $url_search_string = "^\[\]";
2302                 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
2303                         function ($matches) {
2304                                 return '#' . str_replace(' ', '_', $matches[2]);
2305                         },
2306                         $text
2307                 );
2308
2309                 // Converting images with size parameters to simple images. Markdown doesn't know it.
2310                 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
2311
2312                 // Convert it to HTML - don't try oembed
2313                 if ($for_diaspora) {
2314                         $text = self::convert($text, false, self::DIASPORA);
2315
2316                         // Add all tags that maybe were removed
2317                         if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
2318                                 $tagline = '';
2319                                 foreach ($tags[2] as $tag) {
2320                                         $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
2321                                         if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
2322                                                 $tagline .= '#' . $tag . ' ';
2323                                         }
2324                                 }
2325                                 $text = $text . ' ' . $tagline;
2326                         }
2327                 } else {
2328                         $text = self::convert($text, false, self::CONNECTORS);
2329                 }
2330
2331                 // If a link is followed by a quote then there should be a newline before it
2332                 // Maybe we should make this newline at every time before a quote.
2333                 $text = str_replace(['</a><blockquote>'], ['</a><br><blockquote>'], $text);
2334
2335                 // Now convert HTML to Markdown
2336                 $text = HTML::toMarkdown($text);
2337
2338                 // Libertree has a problem with escaped hashtags.
2339                 $text = str_replace(['\#'], ['#'], $text);
2340
2341                 // Remove any leading or trailing whitespace, as this will mess up
2342                 // the Diaspora signature verification and cause the item to disappear
2343                 $text = trim($text);
2344
2345                 if ($for_diaspora) {
2346                         $url_search_string = "^\[\]";
2347                         $text = preg_replace_callback(
2348                                 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
2349                                 ['self', 'bbCodeMention2DiasporaCallback'],
2350                                 $text
2351                         );
2352                 }
2353
2354                 Hook::callAll('bb2diaspora', $text);
2355
2356                 DI::profiler()->stopRecording();
2357                 return $text;
2358         }
2359
2360         /**
2361          * Pull out all #hashtags and @person tags from $string.
2362          *
2363          * We also get @person@domain.com - which would make
2364          * the regex quite complicated as tags can also
2365          * end a sentence. So we'll run through our results
2366          * and strip the period from any tags which end with one.
2367          * Returns array of tags found, or empty array.
2368          *
2369          * @param string $string Post content
2370          * @return array List of tag and person names
2371          */
2372         public static function getTags(string $string): array
2373         {
2374                 DI::profiler()->startRecording('rendering');
2375                 $ret = [];
2376
2377                 self::performWithEscapedTags($string, ['noparse', 'pre', 'code', 'img'], function ($string) use (&$ret) {
2378                         // Convert hashtag links to hashtags
2379                         $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
2380
2381                         // Force line feeds at bbtags
2382                         $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
2383
2384                         // ignore anything in a bbtag
2385                         $string = preg_replace('/\[(.*?)\]/sm', '', $string);
2386
2387                         // Match full names against @tags including the space between first and last
2388                         // We will look these up afterward to see if they are full names or not recognisable.
2389
2390                         if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
2391                                 foreach ($matches[1] as $match) {
2392                                         if (strstr($match, ']')) {
2393                                                 // we might be inside a bbcode color tag - leave it alone
2394                                                 continue;
2395                                         }
2396
2397                                         if (substr($match, -1, 1) === '.') {
2398                                                 $ret[] = substr($match, 0, -1);
2399                                         } else {
2400                                                 $ret[] = $match;
2401                                         }
2402                                 }
2403                         }
2404
2405                         // Otherwise pull out single word tags. These can be @nickname, @first_last
2406                         // and #hash tags.
2407
2408                         if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
2409                                 foreach ($matches[1] as $match) {
2410                                         if (strstr($match, ']')) {
2411                                                 // we might be inside a bbcode color tag - leave it alone
2412                                                 continue;
2413                                         }
2414
2415                                         // try not to catch url fragments
2416                                         if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
2417                                                 continue;
2418                                         }
2419
2420                                         $ret[] = $match;
2421                                 }
2422                         }
2423                 });
2424
2425                 DI::profiler()->stopRecording();
2426                 return array_unique($ret);
2427         }
2428
2429         /**
2430          * Expand tags to URLs, checks the tag is at the start of a line or preceded by a non-word character
2431          *
2432          * @param string $body HTML/BBCode
2433          * @return string body with expanded tags
2434          */
2435         public static function expandTags(string $body): string
2436         {
2437                 return preg_replace_callback("/(?<=\W|^)([!#@])([^\^ \x0D\x0A,;:?'\"]*[^\^ \x0D\x0A,;:?!'\".])/",
2438                         function (array $match) {
2439                                 switch ($match[1]) {
2440                                         case '!':
2441                                         case '@':
2442                                                 $contact = Contact::getByURL($match[2]);
2443                                                 if (!empty($contact)) {
2444                                                         return $match[1] . '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2445                                                 } else {
2446                                                         return $match[1] . $match[2];
2447                                                 }
2448                                                 break;
2449
2450                                         case '#':
2451                                         default:
2452                                                 return $match[1] . '[url=' . DI::baseUrl() . '/search?tag=' . $match[2] . ']' . $match[2] . '[/url]';
2453                                 }
2454                         }, $body);
2455         }
2456
2457         /**
2458          * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
2459          *
2460          * @param string   $text HTML/BBCode
2461          * @param array    $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
2462          * @param callable $callback
2463          * @return string
2464          * @see Strings::performWithEscapedBlocks
2465          */
2466         public static function performWithEscapedTags(string $text, array $tagList, callable $callback): string
2467         {
2468                 $tagList = array_map('preg_quote', $tagList);
2469
2470                 return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
2471         }
2472
2473         /**
2474          * Replaces mentions in the provided message body in BBCode links for the provided user and network if any
2475          *
2476          * @param string $body HTML/BBCode
2477          * @param int $profile_uid Profile user id
2478          * @param string $network Network name
2479          * @return string HTML/BBCode with inserted images
2480          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2481          * @throws \ImagickException
2482          */
2483         public static function setMentions(string $body, $profile_uid = 0, $network = '')
2484         {
2485                 DI::profiler()->startRecording('rendering');
2486                 $body = self::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
2487                         $tags = self::getTags($body);
2488
2489                         $tagged = [];
2490
2491                         foreach ($tags as $tag) {
2492                                 $tag_type = substr($tag, 0, 1);
2493
2494                                 if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
2495                                         continue;
2496                                 }
2497
2498                                 /*
2499                                  * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
2500                                  * Robert Johnson should be first in the $tags array
2501                                  */
2502                                 foreach ($tagged as $nextTag) {
2503                                         if (stristr($nextTag, $tag . ' ')) {
2504                                                 continue 2;
2505                                         }
2506                                 }
2507
2508                                 if (($success = Item::replaceTag($body, $profile_uid, $tag, $network)) && $success['replaced']) {
2509                                         $tagged[] = $tag;
2510                                 }
2511                         }
2512
2513                         return $body;
2514                 });
2515
2516                 DI::profiler()->stopRecording();
2517                 return $body;
2518         }
2519
2520         /**
2521          * @param string      $author  Author display name
2522          * @param string      $profile Author profile URL
2523          * @param string      $avatar  Author profile picture URL
2524          * @param string      $link    Post source URL
2525          * @param string      $posted  Post created date
2526          * @param string|null $guid    Post guid (if any)
2527          * @param string|null $uri     Post uri (if any)
2528          * @return string
2529          * @TODO Rewrite to handle over whole record array
2530          */
2531         public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null, string $uri = null): string
2532         {
2533                 DI::profiler()->startRecording('rendering');
2534                 $header = "[share author='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $author) .
2535                         "' profile='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $profile) .
2536                         "' avatar='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $avatar) .
2537                         "' link='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $link) .
2538                         "' posted='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $posted);
2539
2540                 if ($guid) {
2541                         $header .= "' guid='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $guid);
2542                 }
2543
2544                 if ($uri) {
2545                         $header .= "' message_id='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $uri);
2546                 }
2547
2548                 $header  .= "']";
2549
2550                 DI::profiler()->stopRecording();
2551                 return $header;
2552         }
2553
2554         /**
2555          * Returns the BBCode relevant to embed the provided URL in a post body.
2556          * For media type, it will return [img], [video] and [audio] tags.
2557          * For regular web pages, it will either output a [bookmark] tag if title and description were provided,
2558          * an [attachment] tag or a simple [url] tag depending on $tryAttachment.
2559          *
2560          * @param string      $url
2561          * @param bool        $tryAttachment
2562          * @param string|null $title
2563          * @param string|null $description
2564          * @param string|null $tags
2565          * @return string
2566          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2567          * @see ParseUrl::getSiteinfoCached
2568          */
2569         public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
2570         {
2571                 DI::profiler()->startRecording('rendering');
2572                 DI::logger()->info($url);
2573
2574                 // If there is already some content information submitted we don't
2575                 // need to parse the url for content.
2576                 if (!empty($title) && !empty($description)) {
2577                         $title = str_replace(["\r", "\n"], ['', ''], $title);
2578
2579                         $description = '[quote]' . trim($description) . '[/quote]' . "\n";
2580
2581                         $str_tags = '';
2582                         if (!empty($tags)) {
2583                                 $arr_tags = ParseUrl::convertTagsToArray($tags);
2584                                 if (count($arr_tags)) {
2585                                         $str_tags = "\n" . implode(' ', $arr_tags) . "\n";
2586                                 }
2587                         }
2588
2589                         $result = sprintf('[bookmark=%s]%s[/bookmark]%s', $url, ($title) ? $title : $url, $description) . $str_tags;
2590
2591                         DI::logger()->info('(unparsed): returns: ' . $result);
2592
2593                         DI::profiler()->stopRecording();
2594                         return $result;
2595                 }
2596
2597                 $siteinfo = ParseUrl::getSiteinfoCached($url);
2598
2599                 if (in_array($siteinfo['type'], ['image', 'video', 'audio'])) {
2600                         switch ($siteinfo['type']) {
2601                                 case 'video':
2602                                         $bbcode = "\n" . '[video]' . $url . '[/video]' . "\n";
2603                                         break;
2604                                 case 'audio':
2605                                         $bbcode = "\n" . '[audio]' . $url . '[/audio]' . "\n";
2606                                         break;
2607                                 default:
2608                                         $bbcode = "\n" . '[img]' . $url . '[/img]' . "\n";
2609                                         break;
2610                         }
2611
2612                         DI::profiler()->stopRecording();
2613                         return $bbcode;
2614                 }
2615
2616                 unset($siteinfo['keywords']);
2617
2618                 // Bypass attachment if parse url for a comment
2619                 if (!$tryAttachment) {
2620                         DI::profiler()->stopRecording();
2621                         return "\n" . '[url=' . $url . ']' . $siteinfo['title'] . '[/url]';
2622                 }
2623
2624                 // Format it as BBCode attachment
2625                 $bbcode = "\n" . PageInfo::getFooterFromData($siteinfo);
2626                 DI::profiler()->stopRecording();
2627                 return $bbcode;
2628         }
2629 }