src/Content/Text/BBCode.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Content\Text;
  23
  24 use DOMDocument;
  25 use DOMXPath;
  26 use Exception;
  27 use Friendica\Content\ContactSelector;
  28 use Friendica\Content\Item;
  29 use Friendica\Content\OEmbed;
  30 use Friendica\Content\PageInfo;
  31 use Friendica\Content\Smilies;
  32 use Friendica\Core\Hook;
  33 use Friendica\Core\Logger;
  34 use Friendica\Core\Protocol;
  35 use Friendica\Core\Renderer;
  36 use Friendica\DI;
  37 use Friendica\Model\Contact;
  38 use Friendica\Model\Event;
  39 use Friendica\Model\Photo;
  40 use Friendica\Model\Post;
  41 use Friendica\Model\Tag;
  42 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  43 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  44 use Friendica\Object\Image;
  45 use Friendica\Protocol\Activity;
  46 use Friendica\Util\Images;
  47 use Friendica\Util\Map;
  48 use Friendica\Util\ParseUrl;
  49 use Friendica\Util\Proxy;
  50 use Friendica\Util\Strings;
  51 use Friendica\Util\XML;
  52
  53 class BBCode
  54 {
  55         // Update this value to the current date whenever changes are made to BBCode::convert
  56         const VERSION = '2021-07-28';
  57
  58         const INTERNAL = 0;
  59         const EXTERNAL = 1;
  60         const API = 2;
  61         const DIASPORA = 3;
  62         const CONNECTORS = 4;
  63         const OSTATUS = 7;
  64         const TWITTER = 8;
  65         const BACKLINK = 8;
  66         const ACTIVITYPUB = 9;
  67
  68         const TOP_ANCHOR = '<br class="top-anchor">';
  69         const BOTTOM_ANCHOR = '<br class="button-anchor">';
  70         /**
  71          * Fetches attachment data that were generated the old way
  72          *
  73          * @param string $body Message body
  74          * @return array
  75          *                     'type' -> Message type ('link', 'video', 'photo')
  76          *                     'text' -> Text before the shared message
  77          *                     'after' -> Text after the shared message
  78          *                     'image' -> Preview image of the message
  79          *                     'url' -> Url to the attached message
  80          *                     'title' -> Title of the attachment
  81          *                     'description' -> Description of the attachment
  82          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  83          */
  84         private static function getOldAttachmentData($body)
  85         {
  86                 $post = [];
  87
  88                 // Simplify image codes
  89                 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
  90
  91                 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
  92                         foreach ($attached as $data) {
  93                                 if (!in_array($data[1], ['type-link', 'type-video', 'type-photo'])) {
  94                                         continue;
  95                                 }
  96
  97                                 $post['type'] = substr($data[1], 5);
  98
  99                                 $pos = strpos($body, $data[0]);
 100                                 if ($pos > 0) {
 101                                         $post['text'] = trim(substr($body, 0, $pos));
 102                                         $post['after'] = trim(substr($body, $pos + strlen($data[0])));
 103                                 } else {
 104                                         $post['text'] = trim(str_replace($data[0], '', $body));
 105                                         $post['after'] = '';
 106                                 }
 107
 108                                 $attacheddata = $data[2];
 109
 110                                 if (preg_match("/\[img\](.*?)\[\/img\]/ism", $attacheddata, $matches)) {
 111
 112                                         $picturedata = Images::getInfoFromURLCached($matches[1]);
 113
 114                                         if ($picturedata) {
 115                                                 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
 116                                                         $post['image'] = $matches[1];
 117                                                 } else {
 118                                                         $post['preview'] = $matches[1];
 119                                                 }
 120                                         }
 121                                 }
 122
 123                                 if (preg_match("/\[bookmark\=(.*?)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
 124                                         $post['url'] = $matches[1];
 125                                         $post['title'] = $matches[2];
 126                                 }
 127                                 if (!empty($post['url']) && (in_array($post['type'], ['link', 'video']))
 128                                         && preg_match("/\[url\=(.*?)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
 129                                         $post['url'] = $matches[1];
 130                                 }
 131
 132                                 // Search for description
 133                                 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
 134                                         $post['description'] = $matches[1];
 135                                 }
 136                         }
 137                 }
 138                 return $post;
 139         }
 140
 141         /**
 142          * Fetches attachment data that were generated with the "attachment" element
 143          *
 144          * @param string $body Message body
 145          * @return array
 146          *                     'type' -> Message type ('link', 'video', 'photo')
 147          *                     'text' -> Text before the shared message
 148          *                     'after' -> Text after the shared message
 149          *                     'image' -> Preview image of the message
 150          *                     'url' -> Url to the attached message
 151          *                     'title' -> Title of the attachment
 152          *                     'description' -> Description of the attachment
 153          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 154          */
 155         public static function getAttachmentData($body)
 156         {
 157                 DI::profiler()->startRecording('rendering');
 158                 $data = [
 159                         'type'          => '',
 160                         'text'          => '',
 161                         'after'         => '',
 162                         'image'         => null,
 163                         'url'           => '',
 164                         'author_name'   => '',
 165                         'author_url'    => '',
 166                         'provider_name' => '',
 167                         'provider_url'  => '',
 168                         'title'         => '',
 169                         'description'   => '',
 170                 ];
 171
 172                 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
 173                         DI::profiler()->stopRecording();
 174                         return self::getOldAttachmentData($body);
 175                 }
 176
 177                 $attributes = $match[2];
 178
 179                 $data['text'] = trim($match[1]);
 180
 181                 foreach (['type', 'url', 'title', 'image', 'preview', 'publisher_name', 'publisher_url', 'author_name', 'author_url'] as $field) {
 182                         preg_match('/' . preg_quote($field, '/') . '=("|\')(.*?)\1/ism', $attributes, $matches);
 183                         $value = $matches[2] ?? '';
 184
 185                         if ($value != '') {
 186                                 switch ($field) {
 187                                         case 'publisher_name':
 188                                                 $data['provider_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 189                                                 break;
 190                                         case 'publisher_url':
 191                                                 $data['provider_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 192                                                 break;
 193                                         case 'author_name':
 194                                                 $data['author_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 195                                                 if ($data['provider_name'] == $data['author_name']) {
 196                                                         $data['author_name'] = '';
 197                                                 }
 198                                                 break;
 199                                         case 'author_url':
 200                                                 $data['author_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 201                                                 if ($data['provider_url'] == $data['author_url']) {
 202                                                         $data['author_url'] = '';
 203                                                 }
 204                                                 break;
 205                                         case 'title':
 206                                                 $value = self::convert(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), false, true);
 207                                                 $value = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 208                                                 $value = str_replace(['[', ']'], ['&#91;', '&#93;'], $value);
 209                                                 $data['title'] = $value;
 210                                         default:
 211                                                 $data[$field] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 212                                                 break;
 213                                 }
 214                         }
 215                 }
 216
 217                 if (!in_array($data['type'], ['link', 'audio', 'photo', 'video'])) {
 218                         DI::profiler()->stopRecording();
 219                         return [];
 220                 }
 221
 222                 $data['description'] = trim($match[3]);
 223
 224                 $data['after'] = trim($match[4]);
 225
 226                 $parts = parse_url($data['url']);
 227                 if (!empty($parts['scheme']) && !empty($parts['host'])) {
 228                         if (empty($data['provider_name'])) {
 229                                 $data['provider_name'] = $parts['host'];
 230                         }
 231                         if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
 232                                 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
 233
 234                                 if (!empty($parts['port'])) {
 235                                         $data['provider_url'] .= ':' . $parts['port'];
 236                                 }
 237                         }
 238                 }
 239
 240                 DI::profiler()->stopRecording();
 241                 return $data;
 242         }
 243
 244         public static function getAttachedData($body, $item = [])
 245         {
 246                 /*
 247                 - text:
 248                 - type: link, video, photo
 249                 - title:
 250                 - url:
 251                 - image:
 252                 - description:
 253                 - (thumbnail)
 254                 */
 255
 256                 DI::profiler()->startRecording('rendering');
 257                 $has_title = !empty($item['title']);
 258                 $plink = $item['plink'] ?? '';
 259                 $post = self::getAttachmentData($body);
 260
 261                 // Get all linked images with alternative image description
 262                 if (preg_match_all("/\[img=(http[^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 263                         foreach ($pictures as $picture) {
 264                                 if (Photo::isLocal($picture[1])) {
 265                                         $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => $picture[2]];
 266                                 } else {
 267                                         $post['remote_images'][] = ['url' => $picture[1], 'description' => $picture[2]];
 268                                 }
 269                         }
 270                         if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
 271                                 $post['image_description'] = $post['images'][0]['description'];
 272                         }
 273                 }
 274
 275                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 276                         foreach ($pictures as $picture) {
 277                                 if (Photo::isLocal($picture[1])) {
 278                                         $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => ''];
 279                                 } else {
 280                                         $post['remote_images'][] = ['url' => $picture[1], 'description' => ''];
 281                                 }
 282                         }
 283                 }
 284
 285                 // if nothing is found, it maybe having an image.
 286                 if (!isset($post['type'])) {
 287                         // Simplify image codes
 288                         $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 289                         $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
 290                         $post['text'] = $body;
 291
 292                         if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 293                                 if ((count($pictures) == 1) && !$has_title) {
 294                                         if (!empty($item['object-type']) && ($item['object-type'] == Activity\ObjectType::IMAGE)) {
 295                                                 // Replace the preview picture with the real picture
 296                                                 $url = str_replace('-1.', '-0.', $pictures[0][2]);
 297                                                 $data = ['url' => $url, 'type' => 'photo'];
 298                                         } else {
 299                                                 // Checking, if the link goes to a picture
 300                                                 $data = ParseUrl::getSiteinfoCached($pictures[0][1]);
 301                                         }
 302
 303                                         // Workaround:
 304                                         // Sometimes photo posts to the own album are not detected at the start.
 305                                         // So we seem to cannot use the cache for these cases. That's strange.
 306                                         if (($data['type'] != 'photo') && strstr($pictures[0][1], "/photos/")) {
 307                                                 $data = ParseUrl::getSiteinfo($pictures[0][1]);
 308                                         }
 309
 310                                         if ($data['type'] == 'photo') {
 311                                                 $post['type'] = 'photo';
 312                                                 if (isset($data['images'][0])) {
 313                                                         $post['image'] = $data['images'][0]['src'];
 314                                                         $post['url'] = $data['url'];
 315                                                 } else {
 316                                                         $post['image'] = $data['url'];
 317                                                 }
 318
 319                                                 $post['preview'] = $pictures[0][2];
 320                                                 $post['text'] = trim(str_replace($pictures[0][0], '', $body));
 321                                         } else {
 322                                                 $imgdata = Images::getInfoFromURLCached($pictures[0][1]);
 323                                                 if (($imgdata) && substr($imgdata['mime'], 0, 6) == 'image/') {
 324                                                         $post['type'] = 'photo';
 325                                                         $post['image'] = $pictures[0][1];
 326                                                         $post['preview'] = $pictures[0][2];
 327                                                         $post['text'] = trim(str_replace($pictures[0][0], '', $body));
 328                                                 }
 329                                         }
 330                                 } elseif (count($pictures) > 0) {
 331                                         if (count($pictures) > 4) {
 332                                                 $post['type'] = 'link';
 333                                                 $post['url'] = $plink;
 334                                         } else {
 335                                                 $post['type'] = 'photo';
 336                                         }
 337
 338                                         $post['image'] = $pictures[0][2];
 339                                         $post['text'] = $body;
 340
 341                                         foreach ($pictures as $picture) {
 342                                                 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 343                                         }
 344                                 }
 345                         } elseif (preg_match_all("(\[img\](.*?)\[\/img\])ism", $body, $pictures, PREG_SET_ORDER)) {
 346                                 if ($has_title) {
 347                                         $post['type'] = 'link';
 348                                         $post['url'] = $plink;
 349                                 } else {
 350                                         $post['type'] = 'photo';
 351                                 }
 352
 353                                 $post['image'] = $pictures[0][1];
 354                                 $post['text'] = $body;
 355                                 foreach ($pictures as $picture) {
 356                                         $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 357                                 }
 358                         }
 359
 360                         // Test for the external links
 361                         preg_match_all("(\[url\](.*?)\[\/url\])ism", $post['text'], $links1, PREG_SET_ORDER);
 362                         preg_match_all("(\[url\=(.*?)\].*?\[\/url\])ism", $post['text'], $links2, PREG_SET_ORDER);
 363
 364                         $links = array_merge($links1, $links2);
 365
 366                         // If there is only a single one, then use it.
 367                         // This should cover link posts via API.
 368                         if ((count($links) == 1) && !isset($post['preview']) && !$has_title) {
 369                                 $post['type'] = 'link';
 370                                 $post['url'] = $links[0][1];
 371                         }
 372
 373                         // Simplify "video" element
 374                         $post['text'] = preg_replace('(\[video.*?\ssrc\s?=\s?([^\s\]]+).*?\].*?\[/video\])ism', '[video]$1[/video]', $post['text']);
 375
 376                         // Now count the number of external media links
 377                         preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $post['text'], $links1, PREG_SET_ORDER);
 378                         preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $post['text'], $links2, PREG_SET_ORDER);
 379                         preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $post['text'], $links3, PREG_SET_ORDER);
 380                         preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $post['text'], $links4, PREG_SET_ORDER);
 381
 382                         // Add them to the other external links
 383                         $links = array_merge($links, $links1, $links2, $links3, $links4);
 384
 385                         // Are there more than one?
 386                         if (count($links) > 1) {
 387                                 // The post will be the type "text", which means a blog post
 388                                 unset($post['type']);
 389                                 $post['url'] = $plink;
 390                         }
 391
 392                         if (!isset($post['type'])) {
 393                                 $post['type'] = "text";
 394                                 $post['text'] = trim($body);
 395                         }
 396
 397                         if (($post['type'] == 'photo') && empty($post['images']) && !empty($post['remote_images'])) {
 398                                 $post['images'] = $post['remote_images'];
 399                                 $post['image'] = $post['images'][0]['url'];
 400                                 if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
 401                                         $post['image_description'] = $post['images'][0]['description'];
 402                                 }
 403                         }
 404                         unset($post['remote_images']);
 405                 } elseif (isset($post['url']) && ($post['type'] == 'video')) {
 406                         $data = ParseUrl::getSiteinfoCached($post['url']);
 407
 408                         if (isset($data['images'][0])) {
 409                                 $post['image'] = $data['images'][0]['src'];
 410                         }
 411                 }
 412
 413                 DI::profiler()->stopRecording();
 414                 return $post;
 415         }
 416
 417         /**
 418          * Remove [attachment] BBCode and replaces it with a regular [url]
 419          *
 420          * @param string  $body
 421          * @param boolean $no_link_desc No link description
 422          *
 423          * @return string with replaced body
 424          */
 425         public static function removeAttachment($body, $no_link_desc = false)
 426         {
 427                 return preg_replace_callback("/\s*\[attachment (.*?)\](.*?)\[\/attachment\]\s*/ism",
 428                         function ($match) use ($body, $no_link_desc) {
 429                                 $attach_data = self::getAttachmentData($match[0]);
 430                                 if (empty($attach_data['url'])) {
 431                                         return $match[0];
 432                                 } elseif (strpos(str_replace($match[0], '', $body), $attach_data['url']) !== false) {
 433                                         return '';
 434                                 } elseif (empty($attach_data['title']) || $no_link_desc) {
 435                                         return " \n[url]" . $attach_data['url'] . "[/url]\n";
 436                                 } else {
 437                                         return " \n[url=" . $attach_data['url'] . ']' . $attach_data['title'] . "[/url]\n";
 438                                 }
 439                 }, $body);
 440         }
 441
 442         /**
 443          * Converts a BBCode text into plaintext
 444          *
 445          * @param      $text
 446          * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
 447          *
 448          * @return string
 449          */
 450         public static function toPlaintext($text, $keep_urls = true)
 451         {
 452                 DI::profiler()->startRecording('rendering');
 453                 // Remove pictures in advance to avoid unneeded proxy calls
 454                 $text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $2 ', $text);
 455                 $text = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $text);
 456
 457                 // Remove attachment
 458                 $text = self::removeAttachment($text);
 459
 460                 $naked_text = HTML::toPlaintext(self::convert($text, false, 0, true), 0, !$keep_urls);
 461
 462                 DI::profiler()->stopRecording();
 463                 return $naked_text;
 464         }
 465
 466         private static function proxyUrl($image, $simplehtml = self::INTERNAL, $uriid = 0, $size = '')
 467         {
 468                 // Only send proxied pictures to API and for internal display
 469                 if (!in_array($simplehtml, [self::INTERNAL, self::API])) {
 470                         return $image;
 471                 } elseif ($uriid > 0) {
 472                         return Post\Link::getByLink($uriid, $image, $size);
 473                 } else {
 474                         return Proxy::proxifyUrl($image, $size);
 475                 }
 476         }
 477
 478         /**
 479          * This function changing the visual size (not the real size) of images.
 480          * The function does not work for pictures with an alternate text description.
 481          * This could only be changed by using some new "img" BBCode format.
 482          *
 483          * @param string $srctext The body with images
 484          * @return string The body with possibly scaled images
 485          */
 486         public static function scaleExternalImages(string $srctext)
 487         {
 488                 DI::profiler()->startRecording('rendering');
 489                 $s = $srctext;
 490
 491                 // Simplify image links
 492                 $s = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $s);
 493
 494                 $matches = null;
 495                 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
 496                 if ($c) {
 497                         foreach ($matches as $mtch) {
 498                                 Logger::info('scale_external_image', ['image' => $mtch[1]]);
 499
 500                                 $hostname = str_replace('www.', '', substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3));
 501                                 if (stristr($mtch[1], $hostname)) {
 502                                         continue;
 503                                 }
 504
 505                                 $curlResult = DI::httpClient()->get($mtch[1], HttpClientAccept::IMAGE);
 506                                 if (!$curlResult->isSuccess()) {
 507                                         continue;
 508                                 }
 509
 510                                 Logger::debug('Got picture', ['Content-Type' => $curlResult->getHeader('Content-Type'), 'url' => $mtch[1]]);
 511
 512                                 $i = $curlResult->getBody();
 513                                 $type = $curlResult->getContentType();
 514                                 $type = Images::getMimeTypeByData($i, $mtch[1], $type);
 515
 516                                 if ($i) {
 517                                         $Image = new Image($i, $type);
 518                                         if ($Image->isValid()) {
 519                                                 $orig_width = $Image->getWidth();
 520                                                 $orig_height = $Image->getHeight();
 521
 522                                                 if ($orig_width > 640 || $orig_height > 640) {
 523                                                         $Image->scaleDown(640);
 524                                                         $new_width = $Image->getWidth();
 525                                                         $new_height = $Image->getHeight();
 526                                                         Logger::info('External images scaled', ['orig_width' => $orig_width, 'new_width' => $new_width, 'orig_height' => $orig_height, 'new_height' => $new_height, 'match' => $mtch[0]]);
 527                                                         $s = str_replace(
 528                                                                 $mtch[0],
 529                                                                 '[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
 530                                                                 . "\n",
 531                                                                 $s
 532                                                         );
 533                                                         Logger::info('New string', ['image' => $s]);
 534                                                 }
 535                                         }
 536                                 }
 537                         }
 538                 }
 539
 540                 DI::profiler()->stopRecording();
 541                 return $s;
 542         }
 543
 544         /**
 545          * Truncates imported message body string length to max_import_size
 546          *
 547          * The purpose of this function is to apply system message length limits to
 548          * imported messages without including any embedded photos in the length
 549          *
 550          * @param string $body
 551          * @return string
 552          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 553          */
 554         public static function limitBodySize($body)
 555         {
 556                 DI::profiler()->startRecording('rendering');
 557                 $maxlen = DI::config()->get('config', 'max_import_size', 0);
 558
 559                 // If the length of the body, including the embedded images, is smaller
 560                 // than the maximum, then don't waste time looking for the images
 561                 if ($maxlen && (strlen($body) > $maxlen)) {
 562
 563                         Logger::info('the total body length exceeds the limit', ['maxlen' => $maxlen, 'body_len' => strlen($body)]);
 564
 565                         $orig_body = $body;
 566                         $new_body = '';
 567                         $textlen = 0;
 568
 569                         $img_start = strpos($orig_body, '[img');
 570                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 571                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 572                         while (($img_st_close !== false) && ($img_end !== false)) {
 573
 574                                 $img_st_close++; // make it point to AFTER the closing bracket
 575                                 $img_end += $img_start;
 576                                 $img_end += strlen('[/img]');
 577
 578                                 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 579                                         // This is an embedded image
 580
 581                                         if (($textlen + $img_start) > $maxlen) {
 582                                                 if ($textlen < $maxlen) {
 583                                                         Logger::info('the limit happens before an embedded image');
 584                                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 585                                                         $textlen = $maxlen;
 586                                                 }
 587                                         } else {
 588                                                 $new_body = $new_body . substr($orig_body, 0, $img_start);
 589                                                 $textlen += $img_start;
 590                                         }
 591
 592                                         $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 593                                 } else {
 594
 595                                         if (($textlen + $img_end) > $maxlen) {
 596                                                 if ($textlen < $maxlen) {
 597                                                         Logger::info('the limit happens before the end of a non-embedded image');
 598                                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 599                                                         $textlen = $maxlen;
 600                                                 }
 601                                         } else {
 602                                                 $new_body = $new_body . substr($orig_body, 0, $img_end);
 603                                                 $textlen += $img_end;
 604                                         }
 605                                 }
 606                                 $orig_body = substr($orig_body, $img_end);
 607
 608                                 if ($orig_body === false) {
 609                                         // in case the body ends on a closing image tag
 610                                         $orig_body = '';
 611                                 }
 612
 613                                 $img_start = strpos($orig_body, '[img');
 614                                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 615                                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 616                         }
 617
 618                         if (($textlen + strlen($orig_body)) > $maxlen) {
 619                                 if ($textlen < $maxlen) {
 620                                         Logger::info('the limit happens after the end of the last image');
 621                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 622                                 }
 623                         } else {
 624                                 Logger::info('the text size with embedded images extracted did not violate the limit');
 625                                 $new_body = $new_body . $orig_body;
 626                         }
 627
 628                         DI::profiler()->stopRecording();
 629                         return $new_body;
 630                 } else {
 631                         DI::profiler()->stopRecording();
 632                         return $body;
 633                 }
 634         }
 635
 636         /**
 637          * Processes [attachment] tags
 638          *
 639          * Note: Can produce a [bookmark] tag in the returned string
 640          *
 641          * @param string  $text
 642          * @param integer $simplehtml
 643          * @param bool    $tryoembed
 644          * @param array   $data
 645          * @param int     $uriid
 646          * @return string
 647          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 648          */
 649         public static function convertAttachment($text, $simplehtml = self::INTERNAL, $tryoembed = true, array $data = [], $uriid = 0)
 650         {
 651                 DI::profiler()->startRecording('rendering');
 652                 $data = $data ?: self::getAttachmentData($text);
 653                 if (empty($data) || empty($data['url'])) {
 654                         DI::profiler()->stopRecording();
 655                         return $text;
 656                 }
 657
 658                 if (isset($data['title'])) {
 659                         $data['title'] = strip_tags($data['title']);
 660                         $data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
 661                 } else {
 662                         $data['title'] = null;
 663                 }
 664
 665                 if (((strpos($data['text'], "[img=") !== false) || (strpos($data['text'], "[img]") !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
 666                         $data['preview'] = $data['image'];
 667                         $data['image'] = '';
 668                 }
 669
 670                 $return = '';
 671                 try {
 672                         if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
 673                                 $return = OEmbed::getHTML($data['url'], $data['title']);
 674                         } else {
 675                                 throw new Exception('OEmbed is disabled for this attachment.');
 676                         }
 677                 } catch (Exception $e) {
 678                         $data['title'] = ($data['title'] ?? '') ?: $data['url'];
 679
 680                         if ($simplehtml != self::CONNECTORS) {
 681                                 $return = sprintf('<div class="type-%s">', $data['type']);
 682                         }
 683
 684                         if (!empty($data['title']) && !empty($data['url'])) {
 685                                 if (!empty($data['image']) && empty($data['text']) && ($data['type'] == 'photo')) {
 686                                         $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), $data['title']);
 687                                 } else {
 688                                         if (!empty($data['image'])) {
 689                                                 $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), $data['title']);
 690                                         } elseif (!empty($data['preview'])) {
 691                                                 $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']);
 692                                         }
 693                                         $return .= sprintf('<h4><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></h4>', $data['url'], $data['title']);
 694                                 }
 695                         }
 696
 697                         if (!empty($data['description']) && $data['description'] != $data['title']) {
 698                                 // Sanitize the HTML
 699                                 $return .= sprintf('<blockquote>%s</blockquote>', trim(HTML::purify($data['description'])));
 700                         }
 701
 702                         if (!empty($data['provider_url']) && !empty($data['provider_name'])) {
 703                                 if (!empty($data['author_name'])) {
 704                                         $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s (%s)</a></sup>', $data['provider_url'], $data['author_name'], $data['provider_name']);
 705                                 } else {
 706                                         $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></sup>', $data['provider_url'], $data['provider_name']);
 707                                 }
 708                         }
 709
 710                         if ($simplehtml != self::CONNECTORS) {
 711                                 $return .= '</div>';
 712                         }
 713                 }
 714
 715                 DI::profiler()->stopRecording();
 716                 return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
 717         }
 718
 719         public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
 720         {
 721                 DI::profiler()->startRecording('rendering');
 722                 $data = self::getAttachmentData($Text);
 723
 724                 if (!$data) {
 725                         DI::profiler()->stopRecording();
 726                         return $Text;
 727                 } elseif ($nolink) {
 728                         DI::profiler()->stopRecording();
 729                         return $data['text'] . ($data['after'] ?? '');
 730                 }
 731
 732                 $title = htmlentities($data['title'] ?? '', ENT_QUOTES, 'UTF-8', false);
 733                 $text = htmlentities($data['text'], ENT_QUOTES, 'UTF-8', false);
 734                 if ($plaintext || (($title != '') && strstr($text, $title))) {
 735                         $data['title'] = $data['url'];
 736                 } elseif (($text != '') && strstr($title, $text)) {
 737                         $data['text'] = $data['title'];
 738                         $data['title'] = $data['url'];
 739                 }
 740
 741                 if (empty($data['text']) && !empty($data['title']) && empty($data['url'])) {
 742                         DI::profiler()->stopRecording();
 743                         return $data['title'] . $data['after'];
 744                 }
 745
 746                 // If the link already is included in the post, don't add it again
 747                 if (!empty($data['url']) && strpos($data['text'], $data['url'])) {
 748                         DI::profiler()->stopRecording();
 749                         return $data['text'] . $data['after'];
 750                 }
 751
 752                 $text = $data['text'];
 753
 754                 if (!empty($data['url']) && !empty($data['title'])) {
 755                         $text .= "\n[url=" . $data['url'] . ']' . $data['title'] . '[/url]';
 756                 } elseif (!empty($data['url'])) {
 757                         $text .= "\n[url]" . $data['url'] . '[/url]';
 758                 }
 759
 760                 DI::profiler()->stopRecording();
 761                 return $text . "\n" . $data['after'];
 762         }
 763
 764         /**
 765          * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
 766          *
 767          * @param array $match Array with the matching values
 768          * @return string reformatted link including HTML codes
 769          */
 770         private static function convertUrlForActivityPubCallback($match)
 771         {
 772                 $url = $match[1];
 773
 774                 if (isset($match[2]) && ($match[1] != $match[2])) {
 775                         return $match[0];
 776                 }
 777
 778                 $parts = parse_url($url);
 779                 if (!isset($parts['scheme'])) {
 780                         return $match[0];
 781                 }
 782
 783                 return self::convertUrlForActivityPub($url);
 784         }
 785
 786         /**
 787          * Converts [url] BBCodes in a format that looks fine on ActivityPub systems.
 788          *
 789          * @param string $url URL that is about to be reformatted
 790          * @return string reformatted link including HTML codes
 791          */
 792         private static function convertUrlForActivityPub($url)
 793         {
 794                 $html = '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>';
 795                 return sprintf($html, $url, self::getStyledURL($url));
 796         }
 797
 798         /**
 799          * Converts an URL in a nicer format (without the scheme and possibly shortened)
 800          *
 801          * @param string $url URL that is about to be reformatted
 802          * @return string reformatted link
 803          */
 804         private static function getStyledURL($url)
 805         {
 806                 $parts = parse_url($url);
 807                 $scheme = $parts['scheme'] . '://';
 808                 $styled_url = str_replace($scheme, '', $url);
 809
 810                 if (strlen($styled_url) > 30) {
 811                         $styled_url = substr($styled_url, 0, 30) . "…";
 812                 }
 813
 814                 return $styled_url;
 815         }
 816
 817         /*
 818          * [noparse][i]italic[/i][/noparse] turns into
 819          * [noparse][ i ]italic[ /i ][/noparse],
 820          * to hide them from parser.
 821          */
 822         private static function escapeNoparseCallback($match)
 823         {
 824                 $whole_match = $match[0];
 825                 $captured = $match[1];
 826                 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
 827                 $new_str = str_replace($captured, $spacefied, $whole_match);
 828                 return $new_str;
 829         }
 830
 831         /*
 832          * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
 833          * now turns back and the [noparse] tags are trimed
 834          * returning [i]italic[/i]
 835          */
 836         private static function unescapeNoparseCallback($match)
 837         {
 838                 $captured = $match[1];
 839                 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
 840                 return $unspacefied;
 841         }
 842
 843         /**
 844          * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
 845          * occurrences
 846          *
 847          * @param string $text        Text to search
 848          * @param string $name        Tag name
 849          * @param int    $occurrences Number of first occurrences to skip
 850          * @return boolean|array
 851          */
 852         public static function getTagPosition($text, $name, $occurrences = 0)
 853         {
 854                 DI::profiler()->startRecording('rendering');
 855                 if ($occurrences < 0) {
 856                         $occurrences = 0;
 857                 }
 858
 859                 $start_open = -1;
 860                 for ($i = 0; $i <= $occurrences; $i++) {
 861                         if ($start_open !== false) {
 862                                 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
 863                         }
 864                 }
 865
 866                 if ($start_open === false) {
 867                         DI::profiler()->stopRecording();
 868                         return false;
 869                 }
 870
 871                 $start_equal = strpos($text, '=', $start_open);
 872                 $start_close = strpos($text, ']', $start_open);
 873
 874                 if ($start_close === false) {
 875                         DI::profiler()->stopRecording();
 876                         return false;
 877                 }
 878
 879                 $start_close++;
 880
 881                 $end_open = strpos($text, '[/' . $name . ']', $start_close);
 882
 883                 if ($end_open === false) {
 884                         DI::profiler()->stopRecording();
 885                         return false;
 886                 }
 887
 888                 $res = [
 889                         'start' => [
 890                                 'open' => $start_open,
 891                                 'close' => $start_close
 892                         ],
 893                         'end' => [
 894                                 'open' => $end_open,
 895                                 'close' => $end_open + strlen('[/' . $name . ']')
 896                         ],
 897                 ];
 898
 899                 if ($start_equal !== false) {
 900                         $res['start']['equal'] = $start_equal + 1;
 901                 }
 902
 903                 DI::profiler()->stopRecording();
 904                 return $res;
 905         }
 906
 907         /**
 908          * Performs a preg_replace within the boundaries of all named BBCode tags in a text
 909          *
 910          * @param string $pattern Preg pattern string
 911          * @param string $replace Preg replace string
 912          * @param string $name    BBCode tag name
 913          * @param string $text    Text to search
 914          * @return string
 915          */
 916         public static function pregReplaceInTag($pattern, $replace, $name, $text)
 917         {
 918                 DI::profiler()->startRecording('rendering');
 919                 $occurrences = 0;
 920                 $pos = self::getTagPosition($text, $name, $occurrences);
 921                 while ($pos !== false && $occurrences++ < 1000) {
 922                         $start = substr($text, 0, $pos['start']['open']);
 923                         $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
 924                         $end = substr($text, $pos['end']['close']);
 925                         if ($end === false) {
 926                                 $end = '';
 927                         }
 928
 929                         $subject = preg_replace($pattern, $replace, $subject);
 930                         $text = $start . $subject . $end;
 931
 932                         $pos = self::getTagPosition($text, $name, $occurrences);
 933                 }
 934
 935                 DI::profiler()->stopRecording();
 936                 return $text;
 937         }
 938
 939         private static function extractImagesFromItemBody($body)
 940         {
 941                 $saved_image = [];
 942                 $orig_body = $body;
 943                 $new_body = '';
 944
 945                 $cnt = 0;
 946                 $img_start = strpos($orig_body, '[img');
 947                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 948                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 949                 while (($img_st_close !== false) && ($img_end !== false)) {
 950                         $img_st_close++; // make it point to AFTER the closing bracket
 951                         $img_end += $img_start;
 952
 953                         if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 954                                 // This is an embedded image
 955                                 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
 956                                 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
 957
 958                                 $cnt++;
 959                         } else {
 960                                 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
 961                         }
 962
 963                         $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
 964
 965                         if ($orig_body === false) {
 966                                 // in case the body ends on a closing image tag
 967                                 $orig_body = '';
 968                         }
 969
 970                         $img_start = strpos($orig_body, '[img');
 971                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 972                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 973                 }
 974
 975                 $new_body = $new_body . $orig_body;
 976
 977                 return ['body' => $new_body, 'images' => $saved_image];
 978         }
 979
 980         private static function interpolateSavedImagesIntoItemBody($uriid, $body, array $images)
 981         {
 982                 $newbody = $body;
 983
 984                 $cnt = 0;
 985                 foreach ($images as $image) {
 986                         // We're depending on the property of 'foreach' (specified on the PHP website) that
 987                         // it loops over the array starting from the first element and going sequentially
 988                         // to the last element
 989                         $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
 990                                 '<img src="' . self::proxyUrl($image, self::INTERNAL, $uriid) . '" alt="' . DI::l10n()->t('Image/photo') . '" />', $newbody);
 991                         $cnt++;
 992                 }
 993
 994                 return $newbody;
 995         }
 996
 997         /**
 998          * @param string $text A BBCode string
 999          * @return array Empty array if no share tag is present or the following array, missing attributes end up empty strings:
1000          *               - comment: Text before the opening share tag
1001          *               - shared : Text inside the share tags
1002          *               - author : (Optional) Display name of the shared author
1003          *               - profile: (Optional) Profile page URL of the shared author
1004          *               - avatar : (Optional) Profile picture URL of the shared author
1005          *               - link   : (Optional) Canonical URL of the shared post
1006          *               - posted : (Optional) Date the shared post was initially posted ("Y-m-d H:i:s" in GMT)
1007          *               - guid   : (Optional) Shared post GUID if any
1008          */
1009         public static function fetchShareAttributes(string $text): array
1010         {
1011                 DI::profiler()->startRecording('rendering');
1012                 // See Issue https://github.com/friendica/friendica/issues/10454
1013                 // Hashtags in usernames are expanded to links. This here is a quick fix.
1014                 $text = preg_replace('~([@!#])\[url=.*?](.*?)\[/url]~ism', '$1$2', $text);
1015
1016                 if (!preg_match('~(.*?)\[share(.*?)](.*)\[/share]~ism', $text, $matches)) {
1017                         DI::profiler()->stopRecording();
1018                         return [];
1019                 }
1020
1021                 $attributes = self::extractShareAttributes($matches[2]);
1022
1023                 $attributes['comment'] = trim($matches[1]);
1024                 $attributes['shared'] = trim($matches[3]);
1025
1026                 DI::profiler()->stopRecording();
1027                 return $attributes;
1028         }
1029
1030         /**
1031          * @see BBCode::fetchShareAttributes()
1032          * @param string $shareString Internal opening share tag string matched by the regular expression
1033          * @return array A fixed attribute array where missing attribute are represented by empty strings
1034          */
1035         private static function extractShareAttributes(string $shareString): array
1036         {
1037                 $attributes = [];
1038                 foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid'] as $field) {
1039                         preg_match("/$field=(['\"])(.+?)\\1/ism", $shareString, $matches);
1040                         $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
1041                 }
1042
1043                 return $attributes;
1044         }
1045
1046         /**
1047          * This function converts a [share] block to text according to a provided callback function whose signature is:
1048          *
1049          * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
1050          *
1051          * Where:
1052          * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
1053          * data lookup
1054          * - $author_contact is a contact record array
1055          * - $content is the inner content of the [share] block
1056          * - $is_quote_share indicates whether there's any content before the [share] block
1057          * - Return value is the string that should replace the [share] block in the provided text
1058          *
1059          * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
1060          *
1061          * @param  string   $text     A BBCode string
1062          * @param  callable $callback
1063          * @return string The BBCode string with all [share] blocks replaced
1064          */
1065         public static function convertShare($text, callable $callback, int $uriid = 0)
1066         {
1067                 DI::profiler()->startRecording('rendering');
1068                 $return = preg_replace_callback(
1069                         '~(.*?)\[share(.*?)](.*)\[/share]~ism',
1070                         function ($match) use ($callback, $uriid) {
1071                                 $attributes = self::extractShareAttributes($match[2]);
1072
1073                                 $author_contact = Contact::getByURL($attributes['profile'], false, ['id', 'url', 'addr', 'name', 'micro']);
1074                                 $author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
1075                                 $author_contact['addr'] = ($author_contact['addr'] ?? '');
1076
1077                                 $attributes['author']   = ($author_contact['name']  ?? '') ?: $attributes['author'];
1078                                 $attributes['avatar']   = ($author_contact['micro'] ?? '') ?: $attributes['avatar'];
1079                                 $attributes['profile']  = ($author_contact['url']   ?? '') ?: $attributes['profile'];
1080
1081                                 if (!empty($author_contact['id'])) {
1082                                         $attributes['avatar'] = Contact::getAvatarUrlForId($author_contact['id'], Proxy::SIZE_THUMB);
1083                                 } elseif ($attributes['avatar']) {
1084                                         $attributes['avatar'] = self::proxyUrl($attributes['avatar'], self::INTERNAL, $uriid, Proxy::SIZE_THUMB);
1085                                 }
1086
1087                                 $content = preg_replace(Strings::autoLinkRegEx(), '<a href="$1">$1</a>', $match[3]);
1088
1089                                 return $match[1] . $callback($attributes, $author_contact, $content, trim($match[1]) != '');
1090                         },
1091                         $text
1092                 );
1093
1094                 DI::profiler()->stopRecording();
1095                 return $return;
1096         }
1097
1098         /**
1099          * Convert complex IMG and ZMG elements
1100          *
1101          * @param [type] $text
1102          * @param integer $simplehtml
1103          * @param integer $uriid
1104          * @return string
1105          */
1106         private static function convertImages(string $text, int $simplehtml, int $uriid = 0): string
1107         {
1108                 DI::profiler()->startRecording('rendering');
1109                 $return = preg_replace_callback(
1110                         "/\[[zi]mg(.*?)\]([^\[\]]*)\[\/[zi]mg\]/ism",
1111                         function ($match) use ($simplehtml, $uriid) {
1112                                 $attribute_string = $match[1];
1113                                 $attributes = [];
1114                                 foreach (['alt', 'width', 'height'] as $field) {
1115                                         preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
1116                                         $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
1117                                 }
1118
1119                                 $img_str = '<img src="' .
1120                                 self::proxyUrl($match[2], $simplehtml, $uriid) . '"';
1121                                 foreach ($attributes as $key => $value) {
1122                                         if (!empty($value)) {
1123                                                 $img_str .= ' ' . $key . '="' . htmlspecialchars($value, ENT_COMPAT) . '"';
1124                                         }
1125                                 }
1126                                 return $img_str . '>';
1127                         },
1128                         $text
1129                 );
1130
1131                 DI::profiler()->stopRecording();
1132                 return $return;
1133         }
1134
1135         /**
1136          * Default [share] tag conversion callback
1137          *
1138          * Note: Can produce a [bookmark] tag in the output
1139          *
1140          * @see BBCode::convertShare()
1141          * @param array   $attributes     [share] block attribute values
1142          * @param array   $author_contact Contact row of the shared author
1143          * @param string  $content        Inner content of the [share] block
1144          * @param boolean $is_quote_share Whether there is content before the [share] block
1145          * @param integer $simplehtml     Mysterious integer value depending on the target network/formatting style
1146          * @return string
1147          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1148          */
1149         private static function convertShareCallback(array $attributes, array $author_contact, $content, $is_quote_share, $simplehtml)
1150         {
1151                 DI::profiler()->startRecording('rendering');
1152                 $mention = $attributes['author'] . ' (' . ($author_contact['addr'] ?? '') . ')';
1153
1154                 switch ($simplehtml) {
1155                         case self::API:
1156                                 $text = ($is_quote_share? '<br>' : '') .
1157                                 '<b><a href="' . $attributes['link'] . '">' . html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . "</a>:</b><br>\n" .
1158                                 '<blockquote class="shared_content" dir="auto">' . $content . '</blockquote>';
1159                                 break;
1160                         case self::DIASPORA:
1161                                 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
1162                                         $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
1163                                 } else {
1164                                         $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
1165
1166                                         if (!empty($attributes['posted']) && !empty($attributes['link'])) {
1167                                                 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
1168                                         }
1169
1170                                         $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
1171
1172                                         if (empty($attributes['posted']) && !empty($attributes['link'])) {
1173                                                 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
1174                                         }
1175                                 }
1176
1177                                 break;
1178                         case self::CONNECTORS:
1179                                 $headline = '<p><b>' . html_entity_decode('&#x2672; ', ENT_QUOTES, 'UTF-8');
1180                                 $headline .= DI::l10n()->t('<a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
1181                                 $headline .= ':</b></p>' . "\n";
1182
1183                                 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content" dir="auto">' . trim($content) . '</blockquote>' . "\n";
1184
1185                                 break;
1186                         case self::OSTATUS:
1187                                 $text = ($is_quote_share? '<br>' : '') . '<p>' . html_entity_decode('&#x2672; ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
1188                                 break;
1189                         case self::ACTIVITYPUB:
1190                                 $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>';
1191                                 $text = '<div><a href="' . $attributes['link'] . '">' . html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8') . '</a> ' . $author . '<blockquote>' . $content . '</blockquote></div>' . "\n";
1192                                 break;
1193                         default:
1194                                 $text = ($is_quote_share? "\n" : '');
1195
1196                                 $contact = Contact::getByURL($attributes['profile'], false, ['network']);
1197                                 $network = $contact['network'] ?? Protocol::PHANTOM;
1198
1199                                 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
1200                                 $text .= Renderer::replaceMacros($tpl, [
1201                                         '$profile'      => $attributes['profile'],
1202                                         '$avatar'       => $attributes['avatar'],
1203                                         '$author'       => $attributes['author'],
1204                                         '$link'         => $attributes['link'],
1205                                         '$link_title'   => DI::l10n()->t('Link to source'),
1206                                         '$posted'       => $attributes['posted'],
1207                                         '$guid'         => $attributes['guid'],
1208                                         '$network_name' => ContactSelector::networkToName($network, $attributes['profile']),
1209                                         '$network_icon' => ContactSelector::networkToIcon($network, $attributes['profile']),
1210                                         '$content'      => self::TOP_ANCHOR . self::setMentions(trim($content), 0, $network) . self::BOTTOM_ANCHOR,
1211                                 ]);
1212                                 break;
1213                 }
1214
1215                 return $text;
1216         }
1217
1218         private static function removePictureLinksCallback($match)
1219         {
1220                 $cache_key = 'remove:' . $match[1];
1221                 $text = DI::cache()->get($cache_key);
1222
1223                 if (is_null($text)) {
1224                         $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1225                         if ($curlResult->isSuccess()) {
1226                                 $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1227                         } else {
1228                                 $mimetype = '';
1229                         }
1230
1231                         if (substr($mimetype, 0, 6) == 'image/') {
1232                                 $text = "[url=" . $match[1] . ']' . $match[1] . "[/url]";
1233                         } else {
1234                                 $text = "[url=" . $match[2] . ']' . $match[2] . "[/url]";
1235
1236                                 // if its not a picture then look if its a page that contains a picture link
1237                                 $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1238                                 if (empty($body)) {
1239                                         DI::cache()->set($cache_key, $text);
1240                                         return $text;
1241                                 }
1242
1243                                 $doc = new DOMDocument();
1244                                 @$doc->loadHTML($body);
1245                                 $xpath = new DOMXPath($doc);
1246                                 $list = $xpath->query("//meta[@name]");
1247                                 foreach ($list as $node) {
1248                                         $attr = [];
1249
1250                                         if ($node->attributes->length) {
1251                                                 foreach ($node->attributes as $attribute) {
1252                                                         $attr[$attribute->name] = $attribute->value;
1253                                                 }
1254                                         }
1255
1256                                         if (strtolower($attr['name']) == 'twitter:image') {
1257                                                 $text = '[url=' . $attr['content'] . ']' . $attr['content'] . '[/url]';
1258                                         }
1259                                 }
1260                         }
1261                         DI::cache()->set($cache_key, $text);
1262                 }
1263
1264                 return $text;
1265         }
1266
1267         /**
1268          * Callback: Expands links from given $match array
1269          *
1270          * @param arrat $match Array with link match
1271          * @return string BBCode
1272          */
1273         private static function expandLinksCallback(array $match): string
1274         {
1275                 if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1276                         return ($match[1] . '[url]' . $match[2] . '[/url]');
1277                 } else {
1278                         return ($match[1] . $match[3] . ' [url]' . $match[2] . '[/url]');
1279                 }
1280         }
1281
1282         /**
1283          * Callback: Cleans picture links
1284          *
1285          * @param arrat $match Array with link match
1286          * @return string BBCode
1287          */
1288         private static function cleanPictureLinksCallback(array $match): string
1289         {
1290                 // When the picture link is the own photo path then we can avoid fetching the link
1291                 $own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()->get()) . '/photos/');
1292                 if (preg_match('|' . $own_photo_url . '.*?/image/|', Strings::normaliseLink($match[1]))) {
1293                         if (!empty($match[3])) {
1294                                 $text = '[img=' . str_replace('-1.', '-0.', $match[2]) . ']' . $match[3] . '[/img]';
1295                         } else {
1296                                 $text = '[img]' . str_replace('-1.', '-0.', $match[2]) . '[/img]';
1297                         }
1298                         return $text;
1299                 }
1300
1301                 $cache_key = 'clean:' . $match[1];
1302                 $text = DI::cache()->get($cache_key);
1303                 if (!is_null($text)) {
1304                         return $text;
1305                 }
1306
1307                 $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1308                 if ($curlResult->isSuccess()) {
1309                         $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1310                 } else {
1311                         $mimetype = '';
1312                 }
1313
1314                 // if its a link to a picture then embed this picture
1315                 if (substr($mimetype, 0, 6) == 'image/') {
1316                         $text = '[img]' . $match[1] . '[/img]';
1317                 } else {
1318                         if (!empty($match[3])) {
1319                                 $text = '[img=' . $match[2] . ']' . $match[3] . '[/img]';
1320                         } else {
1321                                 $text = '[img]' . $match[2] . '[/img]';
1322                         }
1323
1324                         // if its not a picture then look if its a page that contains a picture link
1325                         $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1326                         if (empty($body)) {
1327                                 DI::cache()->set($cache_key, $text);
1328                                 return $text;
1329                         }
1330
1331                         $doc = new DOMDocument();
1332                         @$doc->loadHTML($body);
1333                         $xpath = new DOMXPath($doc);
1334                         $list = $xpath->query("//meta[@name]");
1335                         foreach ($list as $node) {
1336                                 $attr = [];
1337                                 if ($node->attributes->length) {
1338                                         foreach ($node->attributes as $attribute) {
1339                                                 $attr[$attribute->name] = $attribute->value;
1340                                         }
1341                                 }
1342
1343                                 if (strtolower($attr['name']) == "twitter:image") {
1344                                         if (!empty($match[3])) {
1345                                                 $text = "[img=" . $attr['content'] . "]" . $match[3] . "[/img]";
1346                                         } else {
1347                                                 $text = "[img]" . $attr['content'] . "[/img]";
1348                                         }
1349                                 }
1350                         }
1351                 }
1352                 DI::cache()->set($cache_key, $text);
1353
1354                 return $text;
1355         }
1356
1357         /**
1358          * Cleans picture links
1359          *
1360          * @param string $text HTML/BBCode string
1361          * @return string Cleaned HTML/BBCode
1362          */
1363         public static function cleanPictureLinks(string $text): string
1364         {
1365                 DI::profiler()->startRecording('rendering');
1366                 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1367                 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $return);
1368                 DI::profiler()->stopRecording();
1369                 return $return;
1370         }
1371
1372         /**
1373          * Removes links
1374          *
1375          * @param string $text HTML/BBCode string
1376          * @return string Cleaned HTML/BBCode
1377          */
1378         public static function removeLinks(string $bbcode): string
1379         {
1380                 DI::profiler()->startRecording('rendering');
1381                 $bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
1382                 $bbcode = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $bbcode);
1383
1384                 $bbcode = preg_replace('/[@!#]\[url\=.*?\].*?\[\/url\]/ism', '', $bbcode);
1385                 $bbcode = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $bbcode);
1386                 $bbcode = preg_replace('/[@!#]?\[url.*?\[\/url\]/ism', '', $bbcode);
1387                 DI::profiler()->stopRecording();
1388                 return $bbcode;
1389         }
1390
1391         /**
1392          * Replace names in mentions with nicknames
1393          *
1394          * @param string $body HTML/BBCode
1395          * @return string Body with replaced mentions
1396          */
1397         public static function setMentionsToNicknames(string $body): string
1398         {
1399                 DI::profiler()->startRecording('rendering');
1400                 $regexp = "/([@!])\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1401                 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1402                 DI::profiler()->stopRecording();
1403                 return $body;
1404         }
1405
1406         /**
1407          * Callback function to replace a Friendica style mention in a mention with the nickname
1408          *
1409          * @param array $match Matching values for the callback
1410          * @return string Replaced mention or empty string
1411          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1412          */
1413         private static function mentionCallback(array $match): string
1414         {
1415                 if (empty($match[2])) {
1416                         return '';
1417                 }
1418
1419                 $data = Contact::getByURL($match[2], false, ['url', 'nick']);
1420                 if (empty($data['nick'])) {
1421                         return $match[0];
1422                 }
1423
1424                 return $match[1] . '[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
1425         }
1426
1427         /**
1428          * Converts a BBCode message for a given URI-ID to a HTML message
1429          *
1430          * BBcode 2 HTML was written by WAY2WEB.net
1431          * extended to work with Mistpark/Friendica - Mike Macgirvin
1432          *
1433          * Simple HTML values meaning:
1434          * - 0: Friendica display
1435          * - 1: Unused
1436          * - 2: Used for Windows Phone push, Friendica API
1437          * - 3: Used before converting to Markdown in bb2diaspora.php
1438          * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1439          * - 5: Unused
1440          * - 6: Unused
1441          * - 7: Used for dfrn, OStatus
1442          * - 8: Used for Twitter, WP backlink text setting
1443          * - 9: ActivityPub
1444          *
1445          * @param int    $uriid
1446          * @param string $text
1447          * @param int    $simple_html
1448          * @return string
1449          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1450          */
1451         public static function convertForUriId(int $uriid = null, string $text = null, int $simple_html = self::INTERNAL): string
1452         {
1453                 $try_oembed = ($simple_html == self::INTERNAL);
1454
1455                 return self::convert($text ?? '', $try_oembed, $simple_html, false, $uriid ?? 0);
1456         }
1457
1458         /**
1459          * Converts a BBCode message to HTML message
1460          *
1461          * BBcode 2 HTML was written by WAY2WEB.net
1462          * extended to work with Mistpark/Friendica - Mike Macgirvin
1463          *
1464          * Simple HTML values meaning:
1465          * - 0: Friendica display
1466          * - 1: Unused
1467          * - 2: Used for Windows Phone push, Friendica API
1468          * - 3: Used before converting to Markdown in bb2diaspora.php
1469          * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1470          * - 5: Unused
1471          * - 6: Unused
1472          * - 7: Used for dfrn, OStatus
1473          * - 8: Used for Twitter, WP backlink text setting
1474          * - 9: ActivityPub
1475          *
1476          * @param string $text
1477          * @param bool   $try_oembed
1478          * @param int    $simple_html
1479          * @param bool   $for_plaintext
1480          * @param int    $uriid
1481          * @return string Converted code or empty string
1482          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1483          */
1484         public static function convert(string $text = null, bool $try_oembed = true, int $simple_html = self::INTERNAL, bool $for_plaintext = false, int $uriid = 0): string
1485         {
1486                 // Accounting for null default column values
1487                 if (is_null($text) || $text === '') {
1488                         return '';
1489                 }
1490
1491                 DI::profiler()->startRecording('rendering');
1492
1493                 Hook::callAll('bbcode', $text);
1494
1495                 $a = DI::app();
1496
1497                 $text = self::performWithEscapedTags($text, ['code'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1498                         $text = self::performWithEscapedTags($text, ['noparse', 'nobb', 'pre'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1499                                 /*
1500                                  * preg_match_callback function to replace potential Oembed tags with Oembed content
1501                                  *
1502                                  * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1503                                  * $match[1] = $url
1504                                  * $match[2] = $title or absent
1505                                  */
1506                                 $try_oembed_callback = function ($match)
1507                                 {
1508                                         $url = $match[1];
1509                                         $title = $match[2] ?? null;
1510
1511                                         try {
1512                                                 $return = OEmbed::getHTML($url, $title);
1513                                         } catch (Exception $ex) {
1514                                                 $return = $match[0];
1515                                         }
1516
1517                                         return $return;
1518                                 };
1519
1520                                 // Remove the abstract element. It is a non visible element.
1521                                 $text = self::stripAbstract($text);
1522
1523                                 // Line ending normalisation
1524                                 $text = str_replace("\r\n", "\n", $text);
1525
1526                                 // Move new lines outside of tags
1527                                 $text = preg_replace("#\[(\w*)](\n*)#ism", '$2[$1]', $text);
1528                                 $text = preg_replace("#(\n*)\[/(\w*)]#ism", '[/$2]$1', $text);
1529
1530                                 // Extract the private images which use data urls since preg has issues with
1531                                 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1532                                 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1533
1534                                 $extracted = self::extractImagesFromItemBody($text);
1535                                 $text = $extracted['body'];
1536                                 $saved_image = $extracted['images'];
1537
1538                                 // If we find any event code, turn it into an event.
1539                                 // After we're finished processing the bbcode we'll
1540                                 // replace all of the event code with a reformatted version.
1541
1542                                 $ev = Event::fromBBCode($text);
1543
1544                                 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1545                                 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1546
1547                                 $text = str_replace("<", "&lt;", $text);
1548                                 $text = str_replace(">", "&gt;", $text);
1549
1550                                 // remove some newlines before the general conversion
1551                                 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
1552                                 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
1553
1554                                 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1555                                 if (!$try_oembed) {
1556                                         $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1557                                 }
1558
1559                                 // Remove linefeeds inside of the table elements. See issue #6799
1560                                 $search = ["\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1561                                         "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1562                                         "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1563                                         "\n[hr]", "[hr]\n", " [hr]", "[hr] ",
1564                                         "\n[attachment ", " [attachment ", "\n[/attachment]", "[/attachment]\n", " [/attachment]", "[/attachment] ",
1565                                         "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] "];
1566                                 $replace = ["[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1567                                         "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1568                                         "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1569                                         "[hr]", "[hr]", "[hr]", "[hr]",
1570                                         "[attachment ", "[attachment ", "[/attachment]", "[/attachment]", "[/attachment]", "[/attachment]",
1571                                         "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]"];
1572                                 do {
1573                                         $oldtext = $text;
1574                                         $text = str_replace($search, $replace, $text);
1575                                 } while ($oldtext != $text);
1576
1577                                 // Replace these here only once
1578                                 $search = ["\n[table]", "[/table]\n"];
1579                                 $replace = ["[table]", "[/table]"];
1580                                 $text = str_replace($search, $replace, $text);
1581
1582                                 // Trim new lines regardless of the system.remove_multiplicated_lines config value
1583                                 $text = trim($text, "\n");
1584
1585                                 // removing multiplicated newlines
1586                                 if (DI::config()->get('system', 'remove_multiplicated_lines')) {
1587                                         $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",
1588                                                         "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1589                                         $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[*]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1590                                                         "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1591                                         do {
1592                                                 $oldtext = $text;
1593                                                 $text = str_replace($search, $replace, $text);
1594                                         } while ($oldtext != $text);
1595                                 }
1596
1597                                 /// @todo Have a closer look at the different html modes
1598                                 // Handle attached links or videos
1599                                 if (in_array($simple_html, [self::API, self::ACTIVITYPUB])) {
1600                                         $text = self::removeAttachment($text);
1601                                 } elseif (!in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::CONNECTORS])) {
1602                                         $text = self::removeAttachment($text, true);
1603                                 } else {
1604                                         $text = self::convertAttachment($text, $simple_html, $try_oembed, [], $uriid);
1605                                 }
1606
1607                                 $nosmile = strpos($text, '[nosmile]') !== false;
1608                                 $text = str_replace('[nosmile]', '', $text);
1609
1610                                 // Replace non graphical smilies for external posts
1611                                 if (!$nosmile) {
1612                                         $text = self::performWithEscapedTags($text, ['img'], function ($text) use ($simple_html, $for_plaintext) {
1613                                                 return Smilies::replace($text, ($simple_html != self::INTERNAL) || $for_plaintext);
1614                                         });
1615                                 }
1616
1617                                 // leave open the posibility of [map=something]
1618                                 // this is replaced in Item::prepareBody() which has knowledge of the item location
1619                                 if (strpos($text, '[/map]') !== false) {
1620                                         $text = preg_replace_callback(
1621                                                 "/\[map\](.*?)\[\/map\]/ism",
1622                                                 function ($match) use ($simple_html) {
1623                                                         return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1624                                                 },
1625                                                 $text
1626                                         );
1627                                 }
1628
1629                                 if (strpos($text, '[map=') !== false) {
1630                                         $text = preg_replace_callback(
1631                                                 "/\[map=(.*?)\]/ism",
1632                                                 function ($match) use ($simple_html) {
1633                                                         return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1634                                                 },
1635                                                 $text
1636                                         );
1637                                 }
1638
1639                                 if (strpos($text, '[map]') !== false) {
1640                                         $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1641                                 }
1642
1643                                 // Check for headers
1644                                 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1645                                 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1646                                 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1647                                 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1648                                 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1649                                 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
1650
1651                                 // Check for paragraph
1652                                 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1653
1654                                 // Check for bold text
1655                                 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1656
1657                                 // Check for Italics text
1658                                 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1659
1660                                 // Check for Underline text
1661                                 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1662
1663                                 // Check for strike-through text
1664                                 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1665
1666                                 // Check for over-line text
1667                                 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1668
1669                                 // Check for colored text
1670                                 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1671
1672                                 // Check for sized text
1673                                 // [size=50] --> font-size: 50px (with the unit).
1674                                 if ($simple_html != self::DIASPORA) {
1675                                         $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1px;line-height:normal;">$2</span>', $text);
1676                                         $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1;line-height:normal;">$2</span>', $text);
1677                                 } else {
1678                                         // Issue 2199: Diaspora doesn't interpret the construct above, nor the <small> or <big> element
1679                                         $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "$2", $text);
1680                                 }
1681
1682
1683                                 // Check for centered text
1684                                 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", '<div style="text-align:center;">$1</div>', $text);
1685
1686                                 // Check for list text
1687                                 $text = str_replace("[*]", "<li>", $text);
1688
1689                                 // Check for block-level custom CSS
1690                                 $text = preg_replace('#(?<=^|\n)\[style=(.*?)](.*?)\[/style](?:\n|$)#ism', '<div style="$1">$2</div>', $text);
1691
1692                                 // Check for inline custom CSS
1693                                 $text = preg_replace("(\[style=(.*?)\](.*?)\[\/style\])ism", '<span style="$1">$2</span>', $text);
1694
1695                                 // Mastodon Emoji (internal tag, do not document for users)
1696                                 $text = preg_replace("(\[emoji=(.*?)](.*?)\[/emoji])ism", '<span class="mastodon emoji"><img src="$1" alt="$2" title="$2"/></span>', $text);
1697
1698                                 // Check for CSS classes
1699                                 // @deprecated since 2021.12, left for backward-compatibility reasons
1700                                 $text = preg_replace("(\[class=(.*?)\](.*?)\[\/class\])ism", '<span class="$1">$2</span>', $text);
1701                                 // Add HTML new lines
1702                                 $text = str_replace("\n", '<br>', $text);
1703
1704                                 // handle nested lists
1705                                 $endlessloop = 0;
1706
1707                                 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1708                                                 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1709                                                 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1710                                                 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1711                                         $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1712                                         $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1713                                         $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1714                                         $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1715                                         $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1716                                         $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1717                                         $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1718                                         $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1719                                         $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1720                                         $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1721                                 }
1722
1723                                 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1724                                 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1725                                 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1726                                 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
1727
1728                                 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1729                                 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1730
1731                                 $text = str_replace('[hr]', '<hr />', $text);
1732
1733                                 if (!$for_plaintext) {
1734                                         $text = self::performWithEscapedTags($text, ['url', 'img', 'audio', 'video', 'youtube', 'vimeo', 'share', 'attachment', 'iframe', 'bookmark'], function ($text) {
1735                                                 return preg_replace(Strings::autoLinkRegEx(), '[url]$1[/url]', $text);
1736                                         });
1737                                 }
1738
1739                                 // Check for font change text
1740                                 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1741
1742                                 // Declare the format for [spoiler] layout
1743                                 $SpoilerLayout = '<details class="spoiler"><summary>' . DI::l10n()->t('Click to open/close') . '</summary>$1</details>';
1744
1745                                 // Check for [spoiler] text
1746                                 // handle nested quotes
1747                                 $endlessloop = 0;
1748                                 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1749                                         $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", $SpoilerLayout, $text);
1750                                 }
1751
1752                                 // Check for [spoiler=Title] text
1753
1754                                 // handle nested quotes
1755                                 $endlessloop = 0;
1756                                 while ((strpos($text, "[/spoiler]")!== false)  && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1757                                         $text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1758                                                 '<details class="spoiler"><summary>$1</summary>$2</details>',
1759                                                 $text);
1760                                 }
1761
1762                                 // Declare the format for [quote] layout
1763                                 $QuoteLayout = '<blockquote>$1</blockquote>';
1764
1765                                 // Check for [quote] text
1766                                 // handle nested quotes
1767                                 $endlessloop = 0;
1768                                 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1769                                         $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1770                                 }
1771
1772                                 // Check for [quote=Author] text
1773
1774                                 $t_wrote = DI::l10n()->t('$1 wrote:');
1775
1776                                 // handle nested quotes
1777                                 $endlessloop = 0;
1778                                 while ((strpos($text, "[/quote]")!== false)  && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1779                                         $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1780                                                 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1781                                                 $text);
1782                                 }
1783
1784
1785                                 // [img=widthxheight]image source[/img]
1786                                 $text = preg_replace_callback(
1787                                         "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1788                                         function ($matches) use ($simple_html, $uriid) {
1789                                                 if (strpos($matches[3], "data:image/") === 0) {
1790                                                         return $matches[0];
1791                                                 }
1792
1793                                                 $matches[3] = self::proxyUrl($matches[3], $simple_html, $uriid);
1794                                                 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1795                                         },
1796                                         $text
1797                                 );
1798
1799                                 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1800                                 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1801
1802                                 $text = preg_replace_callback("/\[img\=(.*?)\](.*?)\[\/img\]/ism",
1803                                         function ($matches) use ($simple_html, $uriid) {
1804                                                 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1805                                                 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1806                                                 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '" title="' . $matches[2] . '">';
1807                                         },
1808                                         $text);
1809
1810                                 // Images
1811                                 // [img]pathtoimage[/img]
1812                                 $text = preg_replace_callback(
1813                                         "/\[img\](.*?)\[\/img\]/ism",
1814                                         function ($matches) use ($simple_html, $uriid) {
1815                                                 if (strpos($matches[1], "data:image/") === 0) {
1816                                                         return $matches[0];
1817                                                 }
1818
1819                                                 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1820                                                 return "[img]" . $matches[1] . "[/img]";
1821                                         },
1822                                         $text
1823                                 );
1824
1825                                 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1826                                 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1827
1828                                 $text = self::convertImages($text, $simple_html, $uriid);
1829
1830                                 $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);
1831                                 $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>', $text);
1832                                 //$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);
1833
1834                                 // Simplify "video" element
1835                                 $text = preg_replace('(\[video[^\]]*?\ssrc\s?=\s?([^\s\]]+)[^\]]*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
1836
1837                                 if ($try_oembed) {
1838                                         // html5 video and audio
1839                                         $text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism",
1840                                                 '<video src="$1" controls width="100%" height="auto"><a href="$1">$1</a></video>', $text);
1841
1842                                         $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1843                                         $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1844
1845                                         $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1846                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1847                                         $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism", '<audio src="$1" controls><a href="$1">$1</a></audio>', $text);
1848                                 } else {
1849                                         $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1850                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1851                                         $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1852                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1853                                 }
1854
1855                                 // Backward compatibility, [iframe] support has been removed in version 2020.12
1856                                 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1857
1858                                 // Youtube extensions
1859                                 if ($try_oembed) {
1860                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1861                                         $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1862                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1863                                 }
1864
1865                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1866                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1867                                 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1868
1869                                 if ($try_oembed) {
1870                                         $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);
1871                                 } else {
1872                                         $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1873                                                 '<a href="https://www.youtube.com/watch?v=$1" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=$1</a>', $text);
1874                                 }
1875
1876                                 if ($try_oembed) {
1877                                         $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1878                                         $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1879                                 }
1880
1881                                 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1882                                 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1883
1884                                 if ($try_oembed) {
1885                                         $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);
1886                                 } else {
1887                                         $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1888                                                 '<a href="https://vimeo.com/$1" target="_blank" rel="noopener noreferrer">https://vimeo.com/$1</a>', $text);
1889                                 }
1890
1891                                 // oembed tag
1892                                 $text = OEmbed::BBCode2HTML($text);
1893
1894                                 // Avoid triple linefeeds through oembed
1895                                 $text = str_replace("<br style='clear:left'></span><br><br>", "<br style='clear:left'></span><br>", $text);
1896
1897                                 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1898                                 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1899                                 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1900                                 // start which is always required). Allow desc with a missing summary for compatibility.
1901
1902                                 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1903                                         $sub = Event::getHTML($ev, $simple_html, $uriid);
1904
1905                                         $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1906                                         $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1907                                         $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1908                                         $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1909                                         $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1910                                         $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1911                                 }
1912
1913                                 if (!$for_plaintext && DI::config()->get('system', 'big_emojis') && ($simple_html != self::DIASPORA)) {
1914                                         $conv = html_entity_decode(str_replace([' ', "\n", "\r"], '', $text));
1915                                         // Emojis are always 4 byte Unicode characters
1916                                         if (!empty($conv) && (strlen($conv) / mb_strlen($conv) == 4)) {
1917                                                 $text = '<span style="font-size: xx-large; line-height: normal;">' . $text . '</span>';
1918                                         }
1919                                 }
1920
1921                                 // Handle mentions and hashtag links
1922                                 if ($simple_html == self::DIASPORA) {
1923                                         // The ! is converted to @ since Diaspora only understands the @
1924                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1925                                                 '@<a href="$2">$3</a>',
1926                                                 $text);
1927                                 } elseif (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1928                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1929                                                 '<span class="h-card"><a href="$2" class="u-url mention">$1<span>$3</span></a></span>',
1930                                                 $text);
1931                                         $text = preg_replace("/([#])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1932                                                 '<a href="$2" class="mention hashtag" rel="tag">$1<span>$3</span></a>',
1933                                                 $text);
1934                                 } elseif (in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::API])) {
1935                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1936                                                 '<bdi>$1<a href="$2" class="userinfo mention" title="$3">$3</a></bdi>',
1937                                                 $text);
1938                                 } else {
1939                                         $text = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $text);
1940                                 }
1941
1942                                 if (!$for_plaintext) {
1943                                         if (in_array($simple_html, [self::OSTATUS, self::API, self::ACTIVITYPUB])) {
1944                                                 $text = preg_replace_callback("/\[url\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1945                                                 $text = preg_replace_callback("/\[url\=(.*?)\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1946                                         }
1947                                 } else {
1948                                         $text = preg_replace("(\[url\](.*?)\[\/url\])ism", " $1 ", $text);
1949                                         $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
1950                                 }
1951
1952                                 // Bookmarks in red - will be converted to bookmarks in friendica
1953                                 $text = preg_replace("/#\^\[url\](.*?)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1954                                 $text = preg_replace("/#\^\[url\=(.*?)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1955                                 $text = preg_replace("/#\[url\=.*?\]\^\[\/url\]\[url\=(.*?)\](.*?)\[\/url\]/i",
1956                                                         "[bookmark=$1]$2[/bookmark]", $text);
1957
1958                                 if (in_array($simple_html, [self::OSTATUS, self::TWITTER])) {
1959                                         $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
1960                                         //$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
1961                                         $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$text);
1962                                 }
1963
1964                                 // Perform URL Search
1965                                 if ($try_oembed) {
1966                                         $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1967                                 }
1968
1969                                 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1970
1971                                 // Handle Diaspora posts
1972                                 $text = preg_replace_callback(
1973                                         "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1974                                         function ($match) {
1975                                                 return "[url=" . DI::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
1976                                         }, $text
1977                                 );
1978
1979                                 $text = preg_replace_callback(
1980                                         "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
1981                                         function ($match) {
1982                                                 return "[url=" . DI::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
1983                                         }, $text
1984                                 );
1985
1986                                 // Server independent link to posts and comments
1987                                 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
1988                                 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1989                                 $text = preg_replace($expression, DI::baseUrl()."/display/$1", $text);
1990
1991                                 /* Tag conversion
1992                                  * Supports:
1993                                  * - #[url=<anything>]<term>[/url]
1994                                  * - [url=<anything>]#<term>[/url]
1995                                  */
1996                                 self::performWithEscapedTags($text, ['url', 'share'], function ($text) use ($simple_html) {
1997                                         $text = preg_replace_callback("/(?:#\[url\=[^\[\]]*\]|\[url\=[^\[\]]*\]#)(.*?)\[\/url\]/ism", function($matches) use ($simple_html) {
1998                                                 if ($simple_html == self::ACTIVITYPUB) {
1999                                                         return '<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
2000                                                                 . '" data-tag="' . XML::escape($matches[1]) . '" rel="tag ugc">#'
2001                                                                 . XML::escape($matches[1]) . '</a>';
2002                                                 } else {
2003                                                         return '#<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
2004                                                                 . '" class="tag" rel="tag" title="' . XML::escape($matches[1]) . '">'
2005                                                                 . XML::escape($matches[1]) . '</a>';
2006                                                 }
2007                                         }, $text);
2008                                         return $text;
2009                                 });
2010
2011                                 // We need no target="_blank" rel="noopener noreferrer" for local links
2012                                 // convert links start with DI::baseUrl() as local link without the target="_blank" rel="noopener noreferrer" attribute
2013                                 $escapedBaseUrl = preg_quote(DI::baseUrl(), '/');
2014                                 $text = preg_replace("/\[url\](".$escapedBaseUrl.".*?)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
2015                                 $text = preg_replace("/\[url\=(".$escapedBaseUrl.".*?)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
2016
2017                                 $text = preg_replace("/\[url\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
2018                                 $text = preg_replace("/\[url\=(.*?)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
2019
2020                                 // Red compatibility, though the link can't be authenticated on Friendica
2021                                 $text = preg_replace("/\[zrl\=(.*?)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
2022
2023
2024                                 // we may need to restrict this further if it picks up too many strays
2025                                 // link acct:user@host to a webfinger profile redirector
2026
2027                                 $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);
2028
2029                                 // Perform MAIL Search
2030                                 $text = preg_replace("/\[mail\](.*?)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
2031                                 $text = preg_replace("/\[mail\=(.*?)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
2032
2033                                 /// @todo What is the meaning of these lines?
2034                                 $text = preg_replace('/\[\&amp\;([#a-z0-9]+)\;\]/', '&$1;', $text);
2035                                 $text = preg_replace('/\&\#039\;/', '\'', $text);
2036
2037                                 // Currently deactivated, it made problems with " inside of alt texts.
2038                                 //$text = preg_replace('/\&quot\;/', '"', $text);
2039
2040                                 // fix any escaped ampersands that may have been converted into links
2041                                 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
2042
2043                                 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
2044                                 $allowed_src_protocols = ['//', 'http://', 'https://', 'redir/', 'cid:'];
2045
2046                                 array_walk($allowed_src_protocols, function(&$value) { $value = preg_quote($value, '#');});
2047
2048                                 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
2049                                                          '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . DI::l10n()->t('Invalid source protocol') . '">', $text);
2050
2051                                 // sanitize href attributes (only allowlisted protocols URLs)
2052                                 // default value for backward compatibility
2053                                 $allowed_link_protocols = DI::config()->get('system', 'allowed_link_protocols', []);
2054
2055                                 // Always allowed protocol even if config isn't set or not including it
2056                                 $allowed_link_protocols[] = '//';
2057                                 $allowed_link_protocols[] = 'http://';
2058                                 $allowed_link_protocols[] = 'https://';
2059                                 $allowed_link_protocols[] = 'redir/';
2060
2061                                 array_walk($allowed_link_protocols, function(&$value) { $value = preg_quote($value, '#');});
2062
2063                                 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
2064                                 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . DI::l10n()->t('Invalid link protocol') . '">', $text);
2065
2066                                 // Shared content
2067                                 $text = self::convertShare(
2068                                         $text,
2069                                         function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
2070                                                 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
2071                                         }, $uriid
2072                                 );
2073
2074                                 $text = self::interpolateSavedImagesIntoItemBody($uriid, $text, $saved_image);
2075
2076                                 return $text;
2077                         }); // Escaped noparse, nobb, pre
2078
2079                         // Remove escaping tags and replace new lines that remain
2080                         $text = preg_replace_callback('/\[(noparse|nobb)](.*?)\[\/\1]/ism', function ($match) {
2081                                 return str_replace("\n", "<br>", $match[2]);
2082                         }, $text);
2083
2084                         // Additionally, [pre] tags preserve spaces
2085                         $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", function ($match) {
2086                                 return str_replace([' ', "\n"], ['&nbsp;', "<br>"], htmlentities($match[1], ENT_NOQUOTES,'UTF-8'));
2087                         }, $text);
2088
2089                         return $text;
2090                 }); // Escaped code
2091
2092                 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
2093                         function ($matches) {
2094                                 if (strpos($matches[2], "\n") !== false) {
2095                                         $return = '<pre><code class="language-' . trim($matches[1]) . '">' . htmlentities(trim($matches[2], "\n\r"), ENT_NOQUOTES, 'UTF-8') . '</code></pre>';
2096                                 } else {
2097                                         $return = '<code>' . htmlentities($matches[2], ENT_NOQUOTES, 'UTF-8') . '</code>';
2098                                 }
2099
2100                                 return $return;
2101                         },
2102                         $text
2103                 );
2104
2105                 // Default iframe allowed domains/path
2106                 $allowedIframeDomains = [
2107                         DI::baseUrl()->getHostname()
2108                         . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : '')
2109                         . '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
2110                         'www.youtube.com/embed/',
2111                         'player.vimeo.com/video/',
2112                 ];
2113
2114                 $allowedIframeDomains = array_merge(
2115                         $allowedIframeDomains,
2116                         DI::config()->get('system', 'allowed_oembed') ?
2117                                 explode(',', DI::config()->get('system', 'allowed_oembed'))
2118                                 : []
2119                 );
2120
2121                 $text = HTML::purify($text, $allowedIframeDomains);
2122                 DI::profiler()->stopRecording();
2123
2124                 return trim($text);
2125         }
2126
2127         /**
2128          * Strips the "abstract" tag from the provided text
2129          *
2130          * @param string $text The text with BBCode
2131          * @return string The same text - but without "abstract" element
2132          */
2133         public static function stripAbstract(string $text): string
2134         {
2135                 DI::profiler()->startRecording('rendering');
2136
2137                 $text = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) {
2138                         $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", ' ', $text);
2139                         $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", ' ', $text);
2140                         return $text;
2141                 });
2142
2143                 DI::profiler()->stopRecording();
2144                 return $text;
2145         }
2146
2147         /**
2148          * Returns the value of the "abstract" element
2149          *
2150          * @param string $text  The text that maybe contains the element
2151          * @param string $addon The addon for which the abstract is meant for
2152          * @return string The abstract
2153          */
2154         public static function getAbstract(string $text, string $addon = ''): string
2155         {
2156                 DI::profiler()->startRecording('rendering');
2157                 $addon = strtolower($addon);
2158
2159                 $abstract = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) use ($addon) {
2160                         if ($addon && preg_match('#\[abstract=' . preg_quote($addon, '#') . '](.*?)\[/abstract]#ism', $text, $matches)) {
2161                                 return $matches[1];
2162                         }
2163
2164                         if (preg_match("#\[abstract](.*?)\[/abstract]#ism", $text, $matches)) {
2165                                 return $matches[1];
2166                         }
2167
2168                         return '';
2169                 });
2170
2171                 DI::profiler()->stopRecording();
2172                 return $abstract;
2173         }
2174
2175         /**
2176          * Callback function to replace a Friendica style mention in a mention for Diaspora
2177          *
2178          * @param array $match Matching values for the callback
2179          *                     [1] = Mention type (! or @)
2180          *                     [2] = Name
2181          *                     [3] = Address
2182          * @return string Replaced mention
2183          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2184          * @throws \ImagickException
2185          */
2186         private static function bbCodeMention2DiasporaCallback(array $match): string
2187         {
2188                 $contact = Contact::getByURL($match[3], false, ['addr']);
2189                 if (empty($contact['addr'])) {
2190                         return $match[0];
2191                 }
2192
2193                 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
2194                 return $mention;
2195         }
2196
2197         /**
2198          * Converts a BBCode text into Markdown
2199          *
2200          * This function converts a BBCode item body to be sent to Markdown-enabled
2201          * systems like Diaspora and Libertree
2202          *
2203          * @param string $text
2204          * @param bool   $for_diaspora Diaspora requires more changes than Libertree
2205          * @return string
2206          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2207          */
2208         public static function toMarkdown(string $text, bool $for_diaspora = true): string
2209         {
2210                 DI::profiler()->startRecording('rendering');
2211                 $original_text = $text;
2212
2213                 // Since Diaspora is creating a summary for links, this function removes them before posting
2214                 if ($for_diaspora) {
2215                         $text = self::removeShareInformation($text);
2216                 }
2217
2218                 /**
2219                  * Transform #tags, strip off the [url] and replace spaces with underscore
2220                  */
2221                 $url_search_string = "^\[\]";
2222                 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
2223                         function ($matches) {
2224                                 return '#' . str_replace(' ', '_', $matches[2]);
2225                         },
2226                         $text
2227                 );
2228
2229                 // Converting images with size parameters to simple images. Markdown doesn't know it.
2230                 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
2231
2232                 // Convert it to HTML - don't try oembed
2233                 if ($for_diaspora) {
2234                         $text = self::convert($text, false, self::DIASPORA);
2235
2236                         // Add all tags that maybe were removed
2237                         if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
2238                                 $tagline = '';
2239                                 foreach ($tags[2] as $tag) {
2240                                         $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
2241                                         if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
2242                                                 $tagline .= '#' . $tag . ' ';
2243                                         }
2244                                 }
2245                                 $text = $text . " " . $tagline;
2246                         }
2247                 } else {
2248                         $text = self::convert($text, false, self::CONNECTORS);
2249                 }
2250
2251                 // If a link is followed by a quote then there should be a newline before it
2252                 // Maybe we should make this newline at every time before a quote.
2253                 $text = str_replace(['</a><blockquote>'], ['</a><br><blockquote>'], $text);
2254
2255                 // Now convert HTML to Markdown
2256                 $text = HTML::toMarkdown($text);
2257
2258                 // Libertree has a problem with escaped hashtags.
2259                 $text = str_replace(['\#'], ['#'], $text);
2260
2261                 // Remove any leading or trailing whitespace, as this will mess up
2262                 // the Diaspora signature verification and cause the item to disappear
2263                 $text = trim($text);
2264
2265                 if ($for_diaspora) {
2266                         $url_search_string = "^\[\]";
2267                         $text = preg_replace_callback(
2268                                 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
2269                                 ['self', 'bbCodeMention2DiasporaCallback'],
2270                                 $text
2271                         );
2272                 }
2273
2274                 Hook::callAll('bb2diaspora', $text);
2275
2276                 DI::profiler()->stopRecording();
2277                 return $text;
2278         }
2279
2280         /**
2281          * Pull out all #hashtags and @person tags from $string.
2282          *
2283          * We also get @person@domain.com - which would make
2284          * the regex quite complicated as tags can also
2285          * end a sentence. So we'll run through our results
2286          * and strip the period from any tags which end with one.
2287          * Returns array of tags found, or empty array.
2288          *
2289          * @param string $string Post content
2290          *
2291          * @return array List of tag and person names
2292          */
2293         public static function getTags(string $string): array
2294         {
2295                 DI::profiler()->startRecording('rendering');
2296                 $ret = [];
2297
2298                 self::performWithEscapedTags($string, ['noparse', 'pre', 'code', 'img'], function ($string) use (&$ret) {
2299                         // Convert hashtag links to hashtags
2300                         $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
2301
2302                         // Force line feeds at bbtags
2303                         $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
2304
2305                         // ignore anything in a bbtag
2306                         $string = preg_replace('/\[(.*?)\]/sm', '', $string);
2307
2308                         // Match full names against @tags including the space between first and last
2309                         // We will look these up afterward to see if they are full names or not recognisable.
2310
2311                         if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
2312                                 foreach ($matches[1] as $match) {
2313                                         if (strstr($match, ']')) {
2314                                                 // we might be inside a bbcode color tag - leave it alone
2315                                                 continue;
2316                                         }
2317
2318                                         if (substr($match, -1, 1) === '.') {
2319                                                 $ret[] = substr($match, 0, -1);
2320                                         } else {
2321                                                 $ret[] = $match;
2322                                         }
2323                                 }
2324                         }
2325
2326                         // Otherwise pull out single word tags. These can be @nickname, @first_last
2327                         // and #hash tags.
2328
2329                         if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
2330                                 foreach ($matches[1] as $match) {
2331                                         if (strstr($match, ']')) {
2332                                                 // we might be inside a bbcode color tag - leave it alone
2333                                                 continue;
2334                                         }
2335
2336                                         // try not to catch url fragments
2337                                         if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
2338                                                 continue;
2339                                         }
2340
2341                                         $ret[] = $match;
2342                                 }
2343                         }
2344                 });
2345
2346                 DI::profiler()->stopRecording();
2347                 return array_unique($ret);
2348         }
2349
2350         /**
2351          * Expand tags to URLs, checks the tag is at the start of a line or preceded by a non-word character
2352          *
2353          * @param string $body HTML/BBCode
2354          * @return string body with expanded tags
2355          */
2356         public static function expandTags(string $body): string
2357         {
2358                 return preg_replace_callback("/(?<=\W|^)([!#@])([^\^ \x0D\x0A,;:?'\"]*[^\^ \x0D\x0A,;:?!'\".])/",
2359                         function ($match) {
2360                                 switch ($match[1]) {
2361                                         case '!':
2362                                         case '@':
2363                                                 $contact = Contact::getByURL($match[2]);
2364                                                 if (!empty($contact)) {
2365                                                         return $match[1] . '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2366                                                 } else {
2367                                                         return $match[1] . $match[2];
2368                                                 }
2369                                                 break;
2370                                         case '#':
2371                                         default:
2372                                                 return $match[1] . '[url=' . DI::baseUrl() . '/search?tag=' . $match[2] . ']' . $match[2] . '[/url]';
2373                                 }
2374                         }, $body);
2375         }
2376
2377         /**
2378          * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
2379          *
2380          * @param string   $text HTML/BBCode
2381          * @param array    $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
2382          * @param callable $callback
2383          * @return string
2384          * @see Strings::performWithEscapedBlocks
2385          */
2386         public static function performWithEscapedTags(string $text, array $tagList, callable $callback): string
2387         {
2388                 $tagList = array_map('preg_quote', $tagList);
2389
2390                 return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
2391         }
2392
2393         /**
2394          * Replaces mentions in the provided message body in BBCode links for the provided user and network if any
2395          *
2396          * @param string $body HTML/BBCode
2397          * @param int $profile_uid Profile user id
2398          * @param string $network Network name
2399          * @return string HTML/BBCode with inserted images
2400          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2401          * @throws \ImagickException
2402          */
2403         public static function setMentions(string $body, $profile_uid = 0, $network = '')
2404         {
2405                 DI::profiler()->startRecording('rendering');
2406                 $body = self::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
2407                         $tags = self::getTags($body);
2408
2409                         $tagged = [];
2410
2411                         foreach ($tags as $tag) {
2412                                 $tag_type = substr($tag, 0, 1);
2413
2414                                 if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
2415                                         continue;
2416                                 }
2417
2418                                 /*
2419                                  * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
2420                                  * Robert Johnson should be first in the $tags array
2421                                  */
2422                                 foreach ($tagged as $nextTag) {
2423                                         if (stristr($nextTag, $tag . ' ')) {
2424                                                 continue 2;
2425                                         }
2426                                 }
2427
2428                                 if (($success = Item::replaceTag($body, $profile_uid, $tag, $network)) && $success['replaced']) {
2429                                         $tagged[] = $tag;
2430                                 }
2431                         }
2432
2433                         return $body;
2434                 });
2435
2436                 DI::profiler()->stopRecording();
2437                 return $body;
2438         }
2439
2440         /**
2441          * @param string      $author  Author display name
2442          * @param string      $profile Author profile URL
2443          * @param string      $avatar  Author profile picture URL
2444          * @param string      $link    Post source URL
2445          * @param string      $posted  Post created date
2446          * @param string|null $guid    Post guid (if any)
2447          * @return string
2448          * @TODO Rewrite to handle over whole record array
2449          */
2450         public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null): string
2451         {
2452                 DI::profiler()->startRecording('rendering');
2453                 $header = "[share author='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $author) .
2454                         "' profile='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $profile) .
2455                         "' avatar='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $avatar) .
2456                         "' link='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $link) .
2457                         "' posted='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $posted);
2458
2459                 if ($guid) {
2460                         $header .= "' guid='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $guid);
2461                 }
2462
2463                 $header  .= "']";
2464
2465                 DI::profiler()->stopRecording();
2466                 return $header;
2467         }
2468
2469         /**
2470          * Returns the BBCode relevant to embed the provided URL in a post body.
2471          * For media type, it will return [img], [video] and [audio] tags.
2472          * For regular web pages, it will either output a [bookmark] tag if title and description were provided,
2473          * an [attachment] tag or a simple [url] tag depending on $tryAttachment.
2474          *
2475          * @param string      $url
2476          * @param bool        $tryAttachment
2477          * @param string|null $title
2478          * @param string|null $description
2479          * @param string|null $tags
2480          * @return string
2481          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2482          *@see ParseUrl::getSiteinfoCached
2483          *
2484          */
2485         public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
2486         {
2487                 DI::profiler()->startRecording('rendering');
2488                 DI::logger()->info($url);
2489
2490                 // If there is already some content information submitted we don't
2491                 // need to parse the url for content.
2492                 if (!empty($title) && !empty($description)) {
2493                         $title = str_replace(["\r", "\n"], ['', ''], $title);
2494
2495                         $description = '[quote]' . trim($description) . '[/quote]' . "\n";
2496
2497                         $str_tags = '';
2498                         if (!empty($tags)) {
2499                                 $arr_tags = ParseUrl::convertTagsToArray($tags);
2500                                 if (count($arr_tags)) {
2501                                         $str_tags = "\n" . implode(' ', $arr_tags) . "\n";
2502                                 }
2503                         }
2504
2505                         $result = sprintf('[bookmark=%s]%s[/bookmark]%s', $url, ($title) ? $title : $url, $description) . $str_tags;
2506
2507                         DI::logger()->info('(unparsed): returns: ' . $result);
2508
2509                         DI::profiler()->stopRecording();
2510                         return $result;
2511                 }
2512
2513                 $siteinfo = ParseUrl::getSiteinfoCached($url);
2514
2515                 if (in_array($siteinfo['type'], ['image', 'video', 'audio'])) {
2516                         switch ($siteinfo['type']) {
2517                                 case 'video':
2518                                         $bbcode = "\n" . '[video]' . $url . '[/video]' . "\n";
2519                                         break;
2520                                 case 'audio':
2521                                         $bbcode = "\n" . '[audio]' . $url . '[/audio]' . "\n";
2522                                         break;
2523                                 default:
2524                                         $bbcode = "\n" . '[img]' . $url . '[/img]' . "\n";
2525                                         break;
2526                         }
2527
2528                         DI::profiler()->stopRecording();
2529                         return $bbcode;
2530                 }
2531
2532                 unset($siteinfo['keywords']);
2533
2534                 // Bypass attachment if parse url for a comment
2535                 if (!$tryAttachment) {
2536                         DI::profiler()->stopRecording();
2537                         return "\n" . '[url=' . $url . ']' . $siteinfo['title'] . '[/url]';
2538                 }
2539
2540                 // Format it as BBCode attachment
2541                 $bbcode = "\n" . PageInfo::getFooterFromData($siteinfo);
2542                 DI::profiler()->stopRecording();
2543                 return $bbcode;
2544         }
2545 }