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