src/Content/Text/BBCode.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Content\Text;
  23
  24 use DOMDocument;
  25 use DOMXPath;
  26 use Exception;
  27 use Friendica\Content\ContactSelector;
  28 use Friendica\Content\Item;
  29 use Friendica\Content\OEmbed;
  30 use Friendica\Content\PageInfo;
  31 use Friendica\Content\Smilies;
  32 use Friendica\Core\Hook;
  33 use Friendica\Core\Logger;
  34 use Friendica\Core\Protocol;
  35 use Friendica\Core\Renderer;
  36 use Friendica\DI;
  37 use Friendica\Model\Contact;
  38 use Friendica\Model\Event;
  39 use Friendica\Model\Photo;
  40 use Friendica\Model\Post;
  41 use Friendica\Model\Tag;
  42 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  43 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  44 use Friendica\Object\Image;
  45 use Friendica\Protocol\Activity;
  46 use Friendica\Util\Images;
  47 use Friendica\Util\Map;
  48 use Friendica\Util\ParseUrl;
  49 use Friendica\Util\Proxy;
  50 use Friendica\Util\Strings;
  51 use Friendica\Util\XML;
  52
  53 class BBCode
  54 {
  55         // Update this value to the current date whenever changes are made to BBCode::convert
  56         const VERSION = '2021-07-28';
  57
  58         const INTERNAL = 0;
  59         const EXTERNAL = 1;
  60         const API = 2;
  61         const DIASPORA = 3;
  62         const CONNECTORS = 4;
  63         const OSTATUS = 7;
  64         const TWITTER = 8;
  65         const BACKLINK = 8;
  66         const ACTIVITYPUB = 9;
  67
  68         const TOP_ANCHOR = '<br class="top-anchor">';
  69         const BOTTOM_ANCHOR = '<br class="button-anchor">';
  70         /**
  71          * Fetches attachment data that were generated the old way
  72          *
  73          * @param string $body Message body
  74          * @return array
  75          *                     'type' -> Message type ('link', 'video', 'photo')
  76          *                     'text' -> Text before the shared message
  77          *                     'after' -> Text after the shared message
  78          *                     'image' -> Preview image of the message
  79          *                     'url' -> Url to the attached message
  80          *                     'title' -> Title of the attachment
  81          *                     'description' -> Description of the attachment
  82          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  83          */
  84         private static function getOldAttachmentData(string $body): array
  85         {
  86                 $post = [];
  87
  88                 // Simplify image codes
  89                 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
  90
  91                 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
  92                         foreach ($attached as $data) {
  93                                 if (!in_array($data[1], ['type-link', 'type-video', 'type-photo'])) {
  94                                         continue;
  95                                 }
  96
  97                                 $post['type'] = substr($data[1], 5);
  98
  99                                 $pos = strpos($body, $data[0]);
 100                                 if ($pos > 0) {
 101                                         $post['text'] = trim(substr($body, 0, $pos));
 102                                         $post['after'] = trim(substr($body, $pos + strlen($data[0])));
 103                                 } else {
 104                                         $post['text'] = trim(str_replace($data[0], '', $body));
 105                                         $post['after'] = '';
 106                                 }
 107
 108                                 $attacheddata = $data[2];
 109
 110                                 if (preg_match("/\[img\](.*?)\[\/img\]/ism", $attacheddata, $matches)) {
 111
 112                                         $picturedata = Images::getInfoFromURLCached($matches[1]);
 113
 114                                         if ($picturedata) {
 115                                                 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
 116                                                         $post['image'] = $matches[1];
 117                                                 } else {
 118                                                         $post['preview'] = $matches[1];
 119                                                 }
 120                                         }
 121                                 }
 122
 123                                 if (preg_match("/\[bookmark\=(.*?)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
 124                                         $post['url'] = $matches[1];
 125                                         $post['title'] = $matches[2];
 126                                 }
 127                                 if (!empty($post['url']) && (in_array($post['type'], ['link', 'video']))
 128                                         && preg_match("/\[url\=(.*?)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
 129                                         $post['url'] = $matches[1];
 130                                 }
 131
 132                                 // Search for description
 133                                 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
 134                                         $post['description'] = $matches[1];
 135                                 }
 136                         }
 137                 }
 138                 return $post;
 139         }
 140
 141         /**
 142          * Fetches attachment data that were generated with the "attachment" element
 143          *
 144          * @param string $body Message body
 145          * @return array
 146          *                     'type' -> Message type ('link', 'video', 'photo')
 147          *                     'text' -> Text before the shared message
 148          *                     'after' -> Text after the shared message
 149          *                     'image' -> Preview image of the message
 150          *                     'url' -> Url to the attached message
 151          *                     'title' -> Title of the attachment
 152          *                     'description' -> Description of the attachment
 153          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 154          */
 155         public static function getAttachmentData(string $body): array
 156         {
 157                 DI::profiler()->startRecording('rendering');
 158                 $data = [
 159                         'type'          => '',
 160                         'text'          => '',
 161                         'after'         => '',
 162                         'image'         => null,
 163                         'url'           => '',
 164                         'author_name'   => '',
 165                         'author_url'    => '',
 166                         'provider_name' => '',
 167                         'provider_url'  => '',
 168                         'title'         => '',
 169                         'description'   => '',
 170                 ];
 171
 172                 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
 173                         DI::profiler()->stopRecording();
 174                         return self::getOldAttachmentData($body);
 175                 }
 176
 177                 $attributes = $match[2];
 178
 179                 $data['text'] = trim($match[1]);
 180
 181                 foreach (['type', 'url', 'title', 'image', 'preview', 'publisher_name', 'publisher_url', 'author_name', 'author_url'] as $field) {
 182                         preg_match('/' . preg_quote($field, '/') . '=("|\')(.*?)\1/ism', $attributes, $matches);
 183                         $value = $matches[2] ?? '';
 184
 185                         if ($value != '') {
 186                                 switch ($field) {
 187                                         case 'publisher_name':
 188                                                 $data['provider_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 189                                                 break;
 190
 191                                         case 'publisher_url':
 192                                                 $data['provider_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 193                                                 break;
 194
 195                                         case 'author_name':
 196                                                 $data['author_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 197                                                 if ($data['provider_name'] == $data['author_name']) {
 198                                                         $data['author_name'] = '';
 199                                                 }
 200                                                 break;
 201
 202                                         case 'author_url':
 203                                                 $data['author_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 204                                                 if ($data['provider_url'] == $data['author_url']) {
 205                                                         $data['author_url'] = '';
 206                                                 }
 207                                                 break;
 208
 209                                         case 'title':
 210                                                 $value = self::convert(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), false, true);
 211                                                 $value = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 212                                                 $value = str_replace(['[', ']'], ['&#91;', '&#93;'], $value);
 213                                                 $data['title'] = $value;
 214
 215                                         default:
 216                                                 $data[$field] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 217                                                 break;
 218                                 }
 219                         }
 220                 }
 221
 222                 if (!in_array($data['type'], ['link', 'audio', 'photo', 'video'])) {
 223                         DI::profiler()->stopRecording();
 224                         return [];
 225                 }
 226
 227                 $data['description'] = trim($match[3]);
 228
 229                 $data['after'] = trim($match[4]);
 230
 231                 $parts = parse_url($data['url']);
 232                 if (!empty($parts['scheme']) && !empty($parts['host'])) {
 233                         if (empty($data['provider_name'])) {
 234                                 $data['provider_name'] = $parts['host'];
 235                         }
 236                         if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
 237                                 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
 238
 239                                 if (!empty($parts['port'])) {
 240                                         $data['provider_url'] .= ':' . $parts['port'];
 241                                 }
 242                         }
 243                 }
 244
 245                 DI::profiler()->stopRecording();
 246                 return $data;
 247         }
 248
 249         public static function getAttachedData(string $body, array $item = []): array
 250         {
 251                 /*
 252                 - text:
 253                 - type: link, video, photo
 254                 - title:
 255                 - url:
 256                 - image:
 257                 - description:
 258                 - (thumbnail)
 259                 */
 260
 261                 DI::profiler()->startRecording('rendering');
 262                 $has_title = !empty($item['title']);
 263                 $plink = $item['plink'] ?? '';
 264                 $post = self::getAttachmentData($body);
 265
 266                 // Get all linked images with alternative image description
 267                 if (preg_match_all("/\[img=(http[^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 268                         foreach ($pictures as $picture) {
 269                                 if (Photo::isLocal($picture[1])) {
 270                                         $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => $picture[2]];
 271                                 } else {
 272                                         $post['remote_images'][] = ['url' => $picture[1], 'description' => $picture[2]];
 273                                 }
 274                         }
 275                         if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
 276                                 $post['image_description'] = $post['images'][0]['description'];
 277                         }
 278                 }
 279
 280                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 281                         foreach ($pictures as $picture) {
 282                                 if (Photo::isLocal($picture[1])) {
 283                                         $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => ''];
 284                                 } else {
 285                                         $post['remote_images'][] = ['url' => $picture[1], 'description' => ''];
 286                                 }
 287                         }
 288                 }
 289
 290                 if (!isset($post['type'])) {
 291                         $post['text'] = $body;
 292                 }
 293
 294                 // Simplify image codes
 295                 $post['text'] = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $post['text']);
 296                 $post['text'] = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $post['text']);
 297
 298                 // if nothing is found, it maybe having an image.
 299                 if (!isset($post['type'])) {
 300                         if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $post['text'], $pictures, PREG_SET_ORDER)) {
 301                                 if ((count($pictures) == 1) && !$has_title) {
 302                                         if (!empty($item['object-type']) && ($item['object-type'] == Activity\ObjectType::IMAGE)) {
 303                                                 // Replace the preview picture with the real picture
 304                                                 $url = str_replace('-1.', '-0.', $pictures[0][2]);
 305                                                 $data = ['url' => $url, 'type' => 'photo'];
 306                                         } else {
 307                                                 // Checking, if the link goes to a picture
 308                                                 $data = ParseUrl::getSiteinfoCached($pictures[0][1]);
 309                                         }
 310
 311                                         // Workaround:
 312                                         // Sometimes photo posts to the own album are not detected at the start.
 313                                         // So we seem to cannot use the cache for these cases. That's strange.
 314                                         if (($data['type'] != 'photo') && strstr($pictures[0][1], '/photos/')) {
 315                                                 $data = ParseUrl::getSiteinfo($pictures[0][1]);
 316                                         }
 317
 318                                         if ($data['type'] == 'photo') {
 319                                                 $post['type'] = 'photo';
 320                                                 if (isset($data['images'][0])) {
 321                                                         $post['image'] = $data['images'][0]['src'];
 322                                                         $post['url'] = $data['url'];
 323                                                 } else {
 324                                                         $post['image'] = $data['url'];
 325                                                 }
 326
 327                                                 $post['preview'] = $pictures[0][2];
 328                                                 $post['text'] = trim(str_replace($pictures[0][0], '', $post['text']));
 329                                         } else {
 330                                                 $imgdata = Images::getInfoFromURLCached($pictures[0][1]);
 331                                                 if (($imgdata) && substr($imgdata['mime'], 0, 6) == 'image/') {
 332                                                         $post['type'] = 'photo';
 333                                                         $post['image'] = $pictures[0][1];
 334                                                         $post['preview'] = $pictures[0][2];
 335                                                         $post['text'] = trim(str_replace($pictures[0][0], '', $post['text']));
 336                                                 }
 337                                         }
 338                                 } elseif (count($pictures) > 0) {
 339                                         if (count($pictures) > 4) {
 340                                                 $post['type'] = 'link';
 341                                                 $post['url'] = $plink;
 342                                         } else {
 343                                                 $post['type'] = 'photo';
 344                                         }
 345
 346                                         $post['image'] = $pictures[0][2];
 347
 348                                         foreach ($pictures as $picture) {
 349                                                 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 350                                         }
 351                                 }
 352                         } elseif (preg_match_all("(\[img\](.*?)\[\/img\])ism", $post['text'], $pictures, PREG_SET_ORDER)) {
 353                                 if ($has_title) {
 354                                         $post['type'] = 'link';
 355                                         $post['url'] = $plink;
 356                                 } else {
 357                                         $post['type'] = 'photo';
 358                                 }
 359
 360                                 $post['image'] = $pictures[0][1];
 361                                 foreach ($pictures as $picture) {
 362                                         $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 363                                 }
 364                         }
 365
 366                         // Test for the external links
 367                         preg_match_all("(\[url\](.*?)\[\/url\])ism", $post['text'], $links1, PREG_SET_ORDER);
 368                         preg_match_all("(\[url\=(.*?)\].*?\[\/url\])ism", $post['text'], $links2, PREG_SET_ORDER);
 369
 370                         $links = array_merge($links1, $links2);
 371
 372                         // If there is only a single one, then use it.
 373                         // This should cover link posts via API.
 374                         if ((count($links) == 1) && !isset($post['preview']) && !$has_title) {
 375                                 $post['type'] = 'link';
 376                                 $post['url'] = $links[0][1];
 377                         }
 378
 379                         // Simplify "video" element
 380                         $post['text'] = preg_replace('(\[video.*?\ssrc\s?=\s?([^\s\]]+).*?\].*?\[/video\])ism', '[video]$1[/video]', $post['text']);
 381
 382                         // Now count the number of external media links
 383                         preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $post['text'], $links1, PREG_SET_ORDER);
 384                         preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $post['text'], $links2, PREG_SET_ORDER);
 385                         preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $post['text'], $links3, PREG_SET_ORDER);
 386                         preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $post['text'], $links4, PREG_SET_ORDER);
 387
 388                         // Add them to the other external links
 389                         $links = array_merge($links, $links1, $links2, $links3, $links4);
 390
 391                         // Are there more than one?
 392                         if (count($links) > 1) {
 393                                 // The post will be the type "text", which means a blog post
 394                                 unset($post['type']);
 395                                 $post['url'] = $plink;
 396                         }
 397
 398                         if (!isset($post['type'])) {
 399                                 $post['type'] = 'text';
 400                         }
 401
 402                         if (($post['type'] == 'photo') && empty($post['images']) && !empty($post['remote_images'])) {
 403                                 $post['images'] = $post['remote_images'];
 404                                 $post['image'] = $post['images'][0]['url'];
 405                                 if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
 406                                         $post['image_description'] = $post['images'][0]['description'];
 407                                 }
 408                         }
 409                         unset($post['remote_images']);
 410                 } elseif (isset($post['url']) && ($post['type'] == 'video')) {
 411                         $data = ParseUrl::getSiteinfoCached($post['url']);
 412
 413                         if (isset($data['images'][0])) {
 414                                 $post['image'] = $data['images'][0]['src'];
 415                         }
 416                 } elseif (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $post['text'], $pictures, PREG_SET_ORDER)) {
 417                         foreach ($pictures as $picture) {
 418                                 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
 419                         }
 420                 }
 421
 422                 DI::profiler()->stopRecording();
 423                 return $post;
 424         }
 425
 426         /**
 427          * Remove [attachment] BBCode and replaces it with a regular [url]
 428          *
 429          * @param string  $body
 430          * @param boolean $no_link_desc No link description
 431          * @return string with replaced body
 432          */
 433         public static function removeAttachment(string $body, bool $no_link_desc = false): string
 434         {
 435                 return preg_replace_callback("/\s*\[attachment (.*?)\](.*?)\[\/attachment\]\s*/ism",
 436                         function ($match) use ($body, $no_link_desc) {
 437                                 $attach_data = self::getAttachmentData($match[0]);
 438                                 if (empty($attach_data['url'])) {
 439                                         return $match[0];
 440                                 } elseif (strpos(str_replace($match[0], '', $body), $attach_data['url']) !== false) {
 441                                         return '';
 442                                 } elseif (empty($attach_data['title']) || $no_link_desc) {
 443                                         return " \n[url]" . $attach_data['url'] . "[/url]\n";
 444                                 } else {
 445                                         return " \n[url=" . $attach_data['url'] . ']' . $attach_data['title'] . "[/url]\n";
 446                                 }
 447                 }, $body);
 448         }
 449
 450         /**
 451          * Converts a BBCode text into plaintext
 452          *
 453          * @param string $text
 454          * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
 455          * @return string
 456          */
 457         public static function toPlaintext(string $text, bool $keep_urls = true): string
 458         {
 459                 DI::profiler()->startRecording('rendering');
 460                 // Remove pictures in advance to avoid unneeded proxy calls
 461                 $text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $2 ', $text);
 462                 $text = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $text);
 463
 464                 // Remove attachment
 465                 $text = self::removeAttachment($text);
 466
 467                 $naked_text = HTML::toPlaintext(self::convert($text, false, 0, true), 0, !$keep_urls);
 468
 469                 DI::profiler()->stopRecording();
 470                 return $naked_text;
 471         }
 472
 473         private static function proxyUrl(string $image, int $simplehtml = self::INTERNAL, int $uriid = 0, string $size = ''): string
 474         {
 475                 // Only send proxied pictures to API and for internal display
 476                 if (!in_array($simplehtml, [self::INTERNAL, self::API])) {
 477                         return $image;
 478                 } elseif ($uriid > 0) {
 479                         return Post\Link::getByLink($uriid, $image, $size);
 480                 } else {
 481                         return Proxy::proxifyUrl($image, $size);
 482                 }
 483         }
 484
 485         /**
 486          * This function changing the visual size (not the real size) of images.
 487          * The function does not work for pictures with an alternate text description.
 488          * This could only be changed by using some new "img" BBCode format.
 489          *
 490          * @param string $srctext The body with images
 491          * @return string The body with possibly scaled images
 492          */
 493         public static function scaleExternalImages(string $srctext): string
 494         {
 495                 DI::profiler()->startRecording('rendering');
 496                 $s = $srctext;
 497
 498                 // Simplify image links
 499                 $s = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $s);
 500
 501                 $matches = null;
 502                 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
 503                 if ($c) {
 504                         foreach ($matches as $mtch) {
 505                                 Logger::debug('scale_external_image', ['image' => $mtch[1]]);
 506
 507                                 $hostname = str_replace('www.', '', substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3));
 508                                 if (stristr($mtch[1], $hostname)) {
 509                                         continue;
 510                                 }
 511
 512                                 $curlResult = DI::httpClient()->get($mtch[1], HttpClientAccept::IMAGE);
 513                                 if (!$curlResult->isSuccess()) {
 514                                         continue;
 515                                 }
 516
 517                                 Logger::debug('Got picture', ['Content-Type' => $curlResult->getHeader('Content-Type'), 'url' => $mtch[1]]);
 518
 519                                 $i = $curlResult->getBody();
 520                                 $type = $curlResult->getContentType();
 521                                 $type = Images::getMimeTypeByData($i, $mtch[1], $type);
 522
 523                                 if ($i) {
 524                                         $Image = new Image($i, $type);
 525                                         if ($Image->isValid()) {
 526                                                 $orig_width = $Image->getWidth();
 527                                                 $orig_height = $Image->getHeight();
 528
 529                                                 if ($orig_width > 640 || $orig_height > 640) {
 530                                                         $Image->scaleDown(640);
 531                                                         $new_width = $Image->getWidth();
 532                                                         $new_height = $Image->getHeight();
 533                                                         Logger::debug('External images scaled', ['orig_width' => $orig_width, 'new_width' => $new_width, 'orig_height' => $orig_height, 'new_height' => $new_height, 'match' => $mtch[0]]);
 534                                                         $s = str_replace(
 535                                                                 $mtch[0],
 536                                                                 '[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
 537                                                                 . "\n",
 538                                                                 $s
 539                                                         );
 540                                                         Logger::debug('New string', ['image' => $s]);
 541                                                 }
 542                                         }
 543                                 }
 544                         }
 545                 }
 546
 547                 DI::profiler()->stopRecording();
 548                 return $s;
 549         }
 550
 551         /**
 552          * Truncates imported message body string length to max_import_size
 553          *
 554          * The purpose of this function is to apply system message length limits to
 555          * imported messages without including any embedded photos in the length
 556          *
 557          * @param string $body
 558          * @return string
 559          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 560          */
 561         public static function limitBodySize(string $body): string
 562         {
 563                 DI::profiler()->startRecording('rendering');
 564                 $maxlen = DI::config()->get('config', 'max_import_size', 0);
 565
 566                 // If the length of the body, including the embedded images, is smaller
 567                 // than the maximum, then don't waste time looking for the images
 568                 if ($maxlen && (strlen($body) > $maxlen)) {
 569
 570                         Logger::info('the total body length exceeds the limit', ['maxlen' => $maxlen, 'body_len' => strlen($body)]);
 571
 572                         $orig_body = $body;
 573                         $new_body = '';
 574                         $textlen = 0;
 575
 576                         $img_start = strpos($orig_body, '[img');
 577                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 578                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 579                         while (($img_st_close !== false) && ($img_end !== false)) {
 580
 581                                 $img_st_close++; // make it point to AFTER the closing bracket
 582                                 $img_end += $img_start;
 583                                 $img_end += strlen('[/img]');
 584
 585                                 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 586                                         // This is an embedded image
 587
 588                                         if (($textlen + $img_start) > $maxlen) {
 589                                                 if ($textlen < $maxlen) {
 590                                                         Logger::debug('the limit happens before an embedded image');
 591                                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 592                                                         $textlen = $maxlen;
 593                                                 }
 594                                         } else {
 595                                                 $new_body = $new_body . substr($orig_body, 0, $img_start);
 596                                                 $textlen += $img_start;
 597                                         }
 598
 599                                         $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 600                                 } else {
 601
 602                                         if (($textlen + $img_end) > $maxlen) {
 603                                                 if ($textlen < $maxlen) {
 604                                                         Logger::debug('the limit happens before the end of a non-embedded image');
 605                                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 606                                                         $textlen = $maxlen;
 607                                                 }
 608                                         } else {
 609                                                 $new_body = $new_body . substr($orig_body, 0, $img_end);
 610                                                 $textlen += $img_end;
 611                                         }
 612                                 }
 613                                 $orig_body = substr($orig_body, $img_end);
 614
 615                                 if ($orig_body === false) {
 616                                         // in case the body ends on a closing image tag
 617                                         $orig_body = '';
 618                                 }
 619
 620                                 $img_start = strpos($orig_body, '[img');
 621                                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 622                                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 623                         }
 624
 625                         if (($textlen + strlen($orig_body)) > $maxlen) {
 626                                 if ($textlen < $maxlen) {
 627                                         Logger::debug('the limit happens after the end of the last image');
 628                                         $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 629                                 }
 630                         } else {
 631                                 Logger::debug('the text size with embedded images extracted did not violate the limit');
 632                                 $new_body = $new_body . $orig_body;
 633                         }
 634
 635                         DI::profiler()->stopRecording();
 636                         return $new_body;
 637                 } else {
 638                         DI::profiler()->stopRecording();
 639                         return $body;
 640                 }
 641         }
 642
 643         /**
 644          * Processes [attachment] tags
 645          *
 646          * Note: Can produce a [bookmark] tag in the returned string
 647          *
 648          * @param string  $text
 649          * @param integer $simplehtml
 650          * @param bool    $tryoembed
 651          * @param array   $data
 652          * @param int     $uriid
 653          * @return string
 654          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 655          */
 656         public static function convertAttachment(string $text, int $simplehtml = self::INTERNAL, bool $tryoembed = true, array $data = [], int $uriid = 0): string
 657         {
 658                 DI::profiler()->startRecording('rendering');
 659                 $data = $data ?: self::getAttachmentData($text);
 660                 if (empty($data) || empty($data['url'])) {
 661                         DI::profiler()->stopRecording();
 662                         return $text;
 663                 }
 664
 665                 if (isset($data['title'])) {
 666                         $data['title'] = strip_tags($data['title']);
 667                         $data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
 668                 } else {
 669                         $data['title'] = '';
 670                 }
 671
 672                 if (((strpos($data['text'], '[img=') !== false) || (strpos($data['text'], '[img]') !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
 673                         $data['preview'] = $data['image'];
 674                         $data['image'] = '';
 675                 }
 676
 677                 $return = '';
 678                 try {
 679                         if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
 680                                 $return = OEmbed::getHTML($data['url'], $data['title']);
 681                         } else {
 682                                 throw new Exception('OEmbed is disabled for this attachment.');
 683                         }
 684                 } catch (Exception $e) {
 685                         $data['title'] = ($data['title'] ?? '') ?: $data['url'];
 686
 687                         if ($simplehtml != self::CONNECTORS) {
 688                                 $return = sprintf('<div class="type-%s">', $data['type']);
 689                         }
 690
 691                         if (!empty($data['title']) && !empty($data['url'])) {
 692                                 if (!empty($data['image']) && empty($data['text']) && ($data['type'] == 'photo')) {
 693                                         $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="attachment-image" /></a>', $data['url'], self::proxyUrl($data['image'], $simplehtml, $uriid), $data['title']);
 694                                 } else {
 695                                         if (!empty($data['image'])) {
 696                                                 $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="attachment-image" /></a><br>', $data['url'], self::proxyUrl($data['image'], $simplehtml, $uriid), $data['title']);
 697                                         } elseif (!empty($data['preview'])) {
 698                                                 $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="attachment-preview" /></a><br>', $data['url'], self::proxyUrl($data['preview'], $simplehtml, $uriid), $data['title']);
 699                                         }
 700                                         $return .= sprintf('<h4><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></h4>', $data['url'], $data['title']);
 701                                 }
 702                         }
 703
 704                         if (!empty($data['description']) && $data['description'] != $data['title']) {
 705                                 // Sanitize the HTML
 706                                 $return .= sprintf('<blockquote>%s</blockquote>', trim(HTML::purify($data['description'])));
 707                         }
 708
 709                         if (!empty($data['provider_url']) && !empty($data['provider_name'])) {
 710                                 if (!empty($data['author_name'])) {
 711                                         $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s (%s)</a></sup>', $data['provider_url'], $data['author_name'], $data['provider_name']);
 712                                 } else {
 713                                         $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></sup>', $data['provider_url'], $data['provider_name']);
 714                                 }
 715                         }
 716
 717                         if ($simplehtml != self::CONNECTORS) {
 718                                 $return .= '</div>';
 719                         }
 720                 }
 721
 722                 DI::profiler()->stopRecording();
 723                 return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
 724         }
 725
 726         public static function removeShareInformation(string $text, bool $plaintext = false, bool $nolink = false): string
 727         {
 728                 DI::profiler()->startRecording('rendering');
 729                 $data = self::getAttachmentData($text);
 730
 731                 if (!$data) {
 732                         DI::profiler()->stopRecording();
 733                         return $text;
 734                 } elseif ($nolink) {
 735                         DI::profiler()->stopRecording();
 736                         return $data['text'] . ($data['after'] ?? '');
 737                 }
 738
 739                 $title = htmlentities($data['title'] ?? '', ENT_QUOTES, 'UTF-8', false);
 740                 $text = htmlentities($data['text'], ENT_QUOTES, 'UTF-8', false);
 741                 if ($plaintext || (($title != '') && strstr($text, $title))) {
 742                         $data['title'] = $data['url'];
 743                 } elseif (($text != '') && strstr($title, $text)) {
 744                         $data['text'] = $data['title'];
 745                         $data['title'] = $data['url'];
 746                 }
 747
 748                 if (empty($data['text']) && !empty($data['title']) && empty($data['url'])) {
 749                         DI::profiler()->stopRecording();
 750                         return $data['title'] . $data['after'];
 751                 }
 752
 753                 // If the link already is included in the post, don't add it again
 754                 if (!empty($data['url']) && strpos($data['text'], $data['url'])) {
 755                         DI::profiler()->stopRecording();
 756                         return $data['text'] . $data['after'];
 757                 }
 758
 759                 $text = $data['text'];
 760
 761                 if (!empty($data['url']) && !empty($data['title'])) {
 762                         $text .= "\n[url=" . $data['url'] . ']' . $data['title'] . '[/url]';
 763                 } elseif (!empty($data['url'])) {
 764                         $text .= "\n[url]" . $data['url'] . '[/url]';
 765                 }
 766
 767                 DI::profiler()->stopRecording();
 768                 return $text . "\n" . $data['after'];
 769         }
 770
 771         /**
 772          * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
 773          *
 774          * @param array $match Array with the matching values
 775          * @return string reformatted link including HTML codes
 776          */
 777         private static function convertUrlForActivityPubCallback(array $match): string
 778         {
 779                 $url = $match[1];
 780
 781                 if (isset($match[2]) && ($match[1] != $match[2])) {
 782                         return $match[0];
 783                 }
 784
 785                 $parts = parse_url($url);
 786                 if (!isset($parts['scheme'])) {
 787                         return $match[0];
 788                 }
 789
 790                 return self::convertUrlForActivityPub($url);
 791         }
 792
 793         /**
 794          * Converts [url] BBCodes in a format that looks fine on ActivityPub systems.
 795          *
 796          * @param string $url URL that is about to be reformatted
 797          * @return string reformatted link including HTML codes
 798          */
 799         private static function convertUrlForActivityPub(string $url): string
 800         {
 801                 return sprintf('<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>', $url, self::getStyledURL($url));
 802         }
 803
 804         /**
 805          * Converts an URL in a nicer format (without the scheme and possibly shortened)
 806          *
 807          * @param string $url URL that is about to be reformatted
 808          * @return string reformatted link
 809          */
 810         private static function getStyledURL(string $url): string
 811         {
 812                 $parts = parse_url($url);
 813                 $scheme = $parts['scheme'] . '://';
 814                 $styled_url = str_replace($scheme, '', $url);
 815
 816                 if (strlen($styled_url) > 30) {
 817                         $styled_url = substr($styled_url, 0, 30) . "…";
 818                 }
 819
 820                 return $styled_url;
 821         }
 822
 823         /*
 824          * [noparse][i]italic[/i][/noparse] turns into
 825          * [noparse][ i ]italic[ /i ][/noparse],
 826          * to hide them from parser.
 827          *
 828          * @param array $match
 829          * @return string
 830          */
 831         private static function escapeNoparseCallback(array $match): string
 832         {
 833                 $whole_match = $match[0];
 834                 $captured = $match[1];
 835                 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
 836                 $new_str = str_replace($captured, $spacefied, $whole_match);
 837                 return $new_str;
 838         }
 839
 840         /*
 841          * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
 842          * now turns back and the [noparse] tags are trimed
 843          * returning [i]italic[/i]
 844          *
 845          * @param array $match
 846          * @return string
 847          */
 848         private static function unescapeNoparseCallback(array $match): string
 849         {
 850                 $captured = $match[1];
 851                 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
 852                 return $unspacefied;
 853         }
 854
 855         /**
 856          * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
 857          * occurrences
 858          *
 859          * @param string $text        Text to search
 860          * @param string $name        Tag name
 861          * @param int    $occurrences Number of first occurrences to skip
 862          * @return boolean|array
 863          */
 864         public static function getTagPosition(string $text, string $name, int $occurrences = 0)
 865         {
 866                 DI::profiler()->startRecording('rendering');
 867                 if ($occurrences < 0) {
 868                         $occurrences = 0;
 869                 }
 870
 871                 $start_open = -1;
 872                 for ($i = 0; $i <= $occurrences; $i++) {
 873                         if ($start_open !== false) {
 874                                 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
 875                         }
 876                 }
 877
 878                 if ($start_open === false) {
 879                         DI::profiler()->stopRecording();
 880                         return false;
 881                 }
 882
 883                 $start_equal = strpos($text, '=', $start_open);
 884                 $start_close = strpos($text, ']', $start_open);
 885
 886                 if ($start_close === false) {
 887                         DI::profiler()->stopRecording();
 888                         return false;
 889                 }
 890
 891                 $start_close++;
 892
 893                 $end_open = strpos($text, '[/' . $name . ']', $start_close);
 894
 895                 if ($end_open === false) {
 896                         DI::profiler()->stopRecording();
 897                         return false;
 898                 }
 899
 900                 $res = [
 901                         'start' => [
 902                                 'open' => $start_open,
 903                                 'close' => $start_close
 904                         ],
 905                         'end' => [
 906                                 'open' => $end_open,
 907                                 'close' => $end_open + strlen('[/' . $name . ']')
 908                         ],
 909                 ];
 910
 911                 if ($start_equal !== false) {
 912                         $res['start']['equal'] = $start_equal + 1;
 913                 }
 914
 915                 DI::profiler()->stopRecording();
 916                 return $res;
 917         }
 918
 919         /**
 920          * Performs a preg_replace within the boundaries of all named BBCode tags in a text
 921          *
 922          * @param string $pattern Preg pattern string
 923          * @param string $replace Preg replace string
 924          * @param string $name    BBCode tag name
 925          * @param string $text    Text to search
 926          * @return string
 927          */
 928         public static function pregReplaceInTag(string $pattern, string $replace, string $name, string $text): string
 929         {
 930                 DI::profiler()->startRecording('rendering');
 931                 $occurrences = 0;
 932                 $pos = self::getTagPosition($text, $name, $occurrences);
 933                 while ($pos !== false && $occurrences++ < 1000) {
 934                         $start = substr($text, 0, $pos['start']['open']);
 935                         $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
 936                         $end = substr($text, $pos['end']['close']);
 937                         if ($end === false) {
 938                                 $end = '';
 939                         }
 940
 941                         $subject = preg_replace($pattern, $replace, $subject);
 942                         $text = $start . $subject . $end;
 943
 944                         $pos = self::getTagPosition($text, $name, $occurrences);
 945                 }
 946
 947                 DI::profiler()->stopRecording();
 948                 return $text;
 949         }
 950
 951         private static function extractImagesFromItemBody(string $body): array
 952         {
 953                 $saved_image = [];
 954                 $orig_body = $body;
 955                 $new_body = '';
 956
 957                 $cnt = 0;
 958                 $img_start = strpos($orig_body, '[img');
 959                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 960                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 961                 while (($img_st_close !== false) && ($img_end !== false)) {
 962                         $img_st_close++; // make it point to AFTER the closing bracket
 963                         $img_end += $img_start;
 964
 965                         if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 966                                 // This is an embedded image
 967                                 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
 968                                 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
 969
 970                                 $cnt++;
 971                         } else {
 972                                 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
 973                         }
 974
 975                         $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
 976
 977                         if ($orig_body === false) {
 978                                 // in case the body ends on a closing image tag
 979                                 $orig_body = '';
 980                         }
 981
 982                         $img_start = strpos($orig_body, '[img');
 983                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 984                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 985                 }
 986
 987                 $new_body = $new_body . $orig_body;
 988
 989                 return ['body' => $new_body, 'images' => $saved_image];
 990         }
 991
 992         private static function interpolateSavedImagesIntoItemBody(int $uriid, string $body, array $images): string
 993         {
 994                 $newbody = $body;
 995
 996                 $cnt = 0;
 997                 foreach ($images as $image) {
 998                         // We're depending on the property of 'foreach' (specified on the PHP website) that
 999                         // it loops over the array starting from the first element and going sequentially
1000                         // to the last element
1001                         $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
1002                                 '<img src="' . self::proxyUrl($image, self::INTERNAL, $uriid) . '" alt="' . DI::l10n()->t('Image/photo') . '" />', $newbody);
1003                         $cnt++;
1004                 }
1005
1006                 return $newbody;
1007         }
1008
1009         /**
1010          * @param string $text A BBCode string
1011          * @return array Empty array if no share tag is present or the following array, missing attributes end up empty strings:
1012          *               - comment: Text before the opening share tag
1013          *               - shared : Text inside the share tags
1014          *               - author : (Optional) Display name of the shared author
1015          *               - profile: (Optional) Profile page URL of the shared author
1016          *               - avatar : (Optional) Profile picture URL of the shared author
1017          *               - link   : (Optional) Canonical URL of the shared post
1018          *               - posted : (Optional) Date the shared post was initially posted ("Y-m-d H:i:s" in GMT)
1019          *               - guid   : (Optional) Shared post GUID if any
1020          */
1021         public static function fetchShareAttributes(string $text): array
1022         {
1023                 DI::profiler()->startRecording('rendering');
1024                 if (preg_match('#(.*?)\[share](.*)\[/share]#', $text, $matches)) {
1025                         return [
1026                                 'author'     => '',
1027                                 'profile'    => '',
1028                                 'avatar'     => '',
1029                                 'link'       => '',
1030                                 'posted'     => '',
1031                                 'guid'       => '',
1032                                 'message_id' => $matches[2],
1033                                 'comment'    => trim($matches[1]),
1034                                 'shared'     => '',
1035                         ];
1036                 }
1037                 // See Issue https://github.com/friendica/friendica/issues/10454
1038                 // Hashtags in usernames are expanded to links. This here is a quick fix.
1039                 $text = preg_replace('~([@!#])\[url=.*?](.*?)\[/url]~ism', '$1$2', $text);
1040
1041                 if (!preg_match('~(.*?)\[share(.*?)](.*)\[/share]~ism', $text, $matches)) {
1042                         DI::profiler()->stopRecording();
1043                         return [];
1044                 }
1045
1046                 $attributes = self::extractShareAttributes($matches[2]);
1047
1048                 $attributes['comment'] = trim($matches[1]);
1049                 $attributes['shared'] = trim($matches[3]);
1050
1051                 DI::profiler()->stopRecording();
1052                 return $attributes;
1053         }
1054
1055         /**
1056          * @see BBCode::fetchShareAttributes()
1057          * @param string $shareString Internal opening share tag string matched by the regular expression
1058          * @return array A fixed attribute array where missing attribute are represented by empty strings
1059          */
1060         private static function extractShareAttributes(string $shareString): array
1061         {
1062                 $attributes = [];
1063                 foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid', 'message_id'] as $field) {
1064                         preg_match("/$field=(['\"])(.+?)\\1/ism", $shareString, $matches);
1065                         $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
1066                 }
1067
1068                 return $attributes;
1069         }
1070
1071         /**
1072          * This function converts a [share] block to text according to a provided callback function whose signature is:
1073          *
1074          * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
1075          *
1076          * Where:
1077          * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
1078          * data lookup
1079          * - $author_contact is a contact record array
1080          * - $content is the inner content of the [share] block
1081          * - $is_quote_share indicates whether there's any content before the [share] block
1082          * - Return value is the string that should replace the [share] block in the provided text
1083          *
1084          * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
1085          *
1086          * @param  string   $text     A BBCode string
1087          * @param  callable $callback
1088          * @return string The BBCode string with all [share] blocks replaced
1089          */
1090         public static function convertShare(string $text, callable $callback, int $uriid = 0): string
1091         {
1092                 DI::profiler()->startRecording('rendering');
1093                 $return = preg_replace_callback(
1094                         '~(.*?)\[share(.*?)](.*)\[/share]~ism',
1095                         function ($match) use ($callback, $uriid) {
1096                                 $attributes = self::extractShareAttributes($match[2]);
1097
1098                                 $author_contact = Contact::getByURL($attributes['profile'], false, ['id', 'url', 'addr', 'name', 'micro']);
1099                                 $author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
1100                                 $author_contact['addr'] = ($author_contact['addr'] ?? '');
1101
1102                                 $attributes['author']   = ($author_contact['name']  ?? '') ?: $attributes['author'];
1103                                 $attributes['avatar']   = ($author_contact['micro'] ?? '') ?: $attributes['avatar'];
1104                                 $attributes['profile']  = ($author_contact['url']   ?? '') ?: $attributes['profile'];
1105
1106                                 if (!empty($author_contact['id'])) {
1107                                         $attributes['avatar'] = Contact::getAvatarUrlForId($author_contact['id'], Proxy::SIZE_THUMB);
1108                                 } elseif ($attributes['avatar']) {
1109                                         $attributes['avatar'] = self::proxyUrl($attributes['avatar'], self::INTERNAL, $uriid, Proxy::SIZE_THUMB);
1110                                 }
1111
1112                                 $content = preg_replace(Strings::autoLinkRegEx(), '<a href="$1">$1</a>', $match[3]);
1113
1114                                 return $match[1] . $callback($attributes, $author_contact, $content, trim($match[1]) != '');
1115                         },
1116                         $text
1117                 );
1118
1119                 DI::profiler()->stopRecording();
1120                 return $return;
1121         }
1122
1123         /**
1124          * Convert complex IMG and ZMG elements
1125          *
1126          * @param [type] $text
1127          * @param integer $simplehtml
1128          * @param integer $uriid
1129          * @return string
1130          */
1131         private static function convertImages(string $text, int $simplehtml, int $uriid = 0): string
1132         {
1133                 DI::profiler()->startRecording('rendering');
1134                 $return = preg_replace_callback(
1135                         "/\[[zi]mg(.*?)\]([^\[\]]*)\[\/[zi]mg\]/ism",
1136                         function ($match) use ($simplehtml, $uriid) {
1137                                 $attribute_string = $match[1];
1138                                 $attributes = [];
1139                                 foreach (['alt', 'width', 'height'] as $field) {
1140                                         preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
1141                                         $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
1142                                 }
1143
1144                                 $img_str = '<img src="' .
1145                                 self::proxyUrl($match[2], $simplehtml, $uriid) . '"';
1146                                 foreach ($attributes as $key => $value) {
1147                                         if (!empty($value)) {
1148                                                 $img_str .= ' ' . $key . '="' . htmlspecialchars($value, ENT_COMPAT) . '"';
1149                                         }
1150                                 }
1151                                 return $img_str . '>';
1152                         },
1153                         $text
1154                 );
1155
1156                 DI::profiler()->stopRecording();
1157                 return $return;
1158         }
1159
1160         /**
1161          * Default [share] tag conversion callback
1162          *
1163          * Note: Can produce a [bookmark] tag in the output
1164          *
1165          * @see BBCode::convertShare()
1166          * @param array   $attributes     [share] block attribute values
1167          * @param array   $author_contact Contact row of the shared author
1168          * @param string  $content        Inner content of the [share] block
1169          * @param boolean $is_quote_share Whether there is content before the [share] block
1170          * @param integer $simplehtml     Mysterious integer value depending on the target network/formatting style
1171          * @return string
1172          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1173          */
1174         private static function convertShareCallback(array $attributes, array $author_contact, string $content, bool $is_quote_share, int $simplehtml): string
1175         {
1176                 DI::profiler()->startRecording('rendering');
1177                 $mention = $attributes['author'] . ' (' . ($author_contact['addr'] ?? '') . ')';
1178
1179                 switch ($simplehtml) {
1180                         case self::API:
1181                                 $text = ($is_quote_share? '<br>' : '') .
1182                                 '<b><a href="' . $attributes['link'] . '">' . html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . "</a>:</b><br>\n" .
1183                                 '<blockquote class="shared_content" dir="auto">' . $content . '</blockquote>';
1184                                 break;
1185                         case self::DIASPORA:
1186                                 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
1187                                         $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
1188                                 } else {
1189                                         $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
1190
1191                                         if (!empty($attributes['posted']) && !empty($attributes['link'])) {
1192                                                 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
1193                                         }
1194
1195                                         $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
1196
1197                                         if (empty($attributes['posted']) && !empty($attributes['link'])) {
1198                                                 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
1199                                         }
1200                                 }
1201
1202                                 break;
1203                         case self::CONNECTORS:
1204                                 $headline = '<p><b>' . html_entity_decode('&#x2672; ', ENT_QUOTES, 'UTF-8');
1205                                 $headline .= DI::l10n()->t('<a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
1206                                 $headline .= ':</b></p>' . "\n";
1207
1208                                 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content" dir="auto">' . trim($content) . '</blockquote>' . "\n";
1209
1210                                 break;
1211                         case self::OSTATUS:
1212                                 $text = ($is_quote_share? '<br>' : '') . '<p>' . html_entity_decode('&#x2672; ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
1213                                 break;
1214                         case self::ACTIVITYPUB:
1215                                 $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>';
1216                                 $text = '<div><a href="' . $attributes['link'] . '">' . html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8') . '</a> ' . $author . '<blockquote>' . $content . '</blockquote></div>' . "\n";
1217                                 break;
1218                         default:
1219                                 $text = ($is_quote_share? "\n" : '');
1220
1221                                 $contact = Contact::getByURL($attributes['profile'], false, ['network']);
1222                                 $network = $contact['network'] ?? Protocol::PHANTOM;
1223
1224                                 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
1225                                 $text .= Renderer::replaceMacros($tpl, [
1226                                         '$profile'      => $attributes['profile'],
1227                                         '$avatar'       => $attributes['avatar'],
1228                                         '$author'       => $attributes['author'],
1229                                         '$link'         => $attributes['link'],
1230                                         '$link_title'   => DI::l10n()->t('Link to source'),
1231                                         '$posted'       => $attributes['posted'],
1232                                         '$guid'         => $attributes['guid'],
1233                                         '$network_name' => ContactSelector::networkToName($network, $attributes['profile']),
1234                                         '$network_icon' => ContactSelector::networkToIcon($network, $attributes['profile']),
1235                                         '$content'      => self::TOP_ANCHOR . self::setMentions(trim($content), 0, $network) . self::BOTTOM_ANCHOR,
1236                                 ]);
1237                                 break;
1238                 }
1239
1240                 return $text;
1241         }
1242
1243         private static function removePictureLinksCallback(array $match): string
1244         {
1245                 $cache_key = 'remove:' . $match[1];
1246                 $text = DI::cache()->get($cache_key);
1247
1248                 if (is_null($text)) {
1249                         $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1250                         if ($curlResult->isSuccess()) {
1251                                 $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1252                         } else {
1253                                 $mimetype = '';
1254                         }
1255
1256                         if (substr($mimetype, 0, 6) == 'image/') {
1257                                 $text = '[url=' . $match[1] . ']' . $match[1] . '[/url]';
1258                         } else {
1259                                 $text = '[url=' . $match[2] . ']' . $match[2] . '[/url]';
1260
1261                                 // if its not a picture then look if its a page that contains a picture link
1262                                 $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1263                                 if (empty($body)) {
1264                                         DI::cache()->set($cache_key, $text);
1265                                         return $text;
1266                                 }
1267
1268                                 $doc = new DOMDocument();
1269                                 @$doc->loadHTML($body);
1270                                 $xpath = new DOMXPath($doc);
1271                                 $list = $xpath->query('//meta[@name]');
1272                                 foreach ($list as $node) {
1273                                         $attr = [];
1274
1275                                         if ($node->attributes->length) {
1276                                                 foreach ($node->attributes as $attribute) {
1277                                                         $attr[$attribute->name] = $attribute->value;
1278                                                 }
1279                                         }
1280
1281                                         if (strtolower($attr['name']) == 'twitter:image') {
1282                                                 $text = '[url=' . $attr['content'] . ']' . $attr['content'] . '[/url]';
1283                                         }
1284                                 }
1285                         }
1286                         DI::cache()->set($cache_key, $text);
1287                 }
1288
1289                 return $text;
1290         }
1291
1292         /**
1293          * Callback: Expands links from given $match array
1294          *
1295          * @param arrat $match Array with link match
1296          * @return string BBCode
1297          */
1298         private static function expandLinksCallback(array $match): string
1299         {
1300                 if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1301                         return ($match[1] . '[url]' . $match[2] . '[/url]');
1302                 } else {
1303                         return ($match[1] . $match[3] . ' [url]' . $match[2] . '[/url]');
1304                 }
1305         }
1306
1307         /**
1308          * Callback: Cleans picture links
1309          *
1310          * @param arrat $match Array with link match
1311          * @return string BBCode
1312          */
1313         private static function cleanPictureLinksCallback(array $match): string
1314         {
1315                 // When the picture link is the own photo path then we can avoid fetching the link
1316                 $own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()->get()) . '/photos/');
1317                 if (preg_match('|' . $own_photo_url . '.*?/image/|', Strings::normaliseLink($match[1]))) {
1318                         if (!empty($match[3])) {
1319                                 $text = '[img=' . str_replace('-1.', '-0.', $match[2]) . ']' . $match[3] . '[/img]';
1320                         } else {
1321                                 $text = '[img]' . str_replace('-1.', '-0.', $match[2]) . '[/img]';
1322                         }
1323                         return $text;
1324                 }
1325
1326                 $cache_key = 'clean:' . $match[1];
1327                 $text = DI::cache()->get($cache_key);
1328                 if (!is_null($text)) {
1329                         return $text;
1330                 }
1331
1332                 $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1333                 if ($curlResult->isSuccess()) {
1334                         $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1335                 } else {
1336                         $mimetype = '';
1337                 }
1338
1339                 // if its a link to a picture then embed this picture
1340                 if (substr($mimetype, 0, 6) == 'image/') {
1341                         $text = '[img]' . $match[1] . '[/img]';
1342                 } else {
1343                         if (!empty($match[3])) {
1344                                 $text = '[img=' . $match[2] . ']' . $match[3] . '[/img]';
1345                         } else {
1346                                 $text = '[img]' . $match[2] . '[/img]';
1347                         }
1348
1349                         // if its not a picture then look if its a page that contains a picture link
1350                         $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1351                         if (empty($body)) {
1352                                 DI::cache()->set($cache_key, $text);
1353                                 return $text;
1354                         }
1355
1356                         $doc = new DOMDocument();
1357                         @$doc->loadHTML($body);
1358                         $xpath = new DOMXPath($doc);
1359                         $list = $xpath->query('//meta[@name]');
1360                         foreach ($list as $node) {
1361                                 $attr = [];
1362                                 if ($node->attributes->length) {
1363                                         foreach ($node->attributes as $attribute) {
1364                                                 $attr[$attribute->name] = $attribute->value;
1365                                         }
1366                                 }
1367
1368                                 if (strtolower($attr['name']) == "twitter:image") {
1369                                         if (!empty($match[3])) {
1370                                                 $text = "[img=" . $attr['content'] . "]" . $match[3] . "[/img]";
1371                                         } else {
1372                                                 $text = "[img]" . $attr['content'] . "[/img]";
1373                                         }
1374                                 }
1375                         }
1376                 }
1377                 DI::cache()->set($cache_key, $text);
1378
1379                 return $text;
1380         }
1381
1382         /**
1383          * Cleans picture links
1384          *
1385          * @param string $text HTML/BBCode string
1386          * @return string Cleaned HTML/BBCode
1387          */
1388         public static function cleanPictureLinks(string $text): string
1389         {
1390                 DI::profiler()->startRecording('rendering');
1391                 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1392                 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $return);
1393                 DI::profiler()->stopRecording();
1394                 return $return;
1395         }
1396
1397         /**
1398          * Removes links
1399          *
1400          * @param string $text HTML/BBCode string
1401          * @return string Cleaned HTML/BBCode
1402          */
1403         public static function removeLinks(string $bbcode): string
1404         {
1405                 DI::profiler()->startRecording('rendering');
1406                 $bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
1407                 $bbcode = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $bbcode);
1408
1409                 $bbcode = preg_replace('/[@!#]\[url\=.*?\].*?\[\/url\]/ism', '', $bbcode);
1410                 $bbcode = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $bbcode);
1411                 $bbcode = preg_replace('/[@!#]?\[url.*?\[\/url\]/ism', '', $bbcode);
1412                 DI::profiler()->stopRecording();
1413                 return $bbcode;
1414         }
1415
1416         /**
1417          * Replace names in mentions with nicknames
1418          *
1419          * @param string $body HTML/BBCode
1420          * @return string Body with replaced mentions
1421          */
1422         public static function setMentionsToNicknames(string $body): string
1423         {
1424                 DI::profiler()->startRecording('rendering');
1425                 $regexp = "/([@!])\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1426                 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1427                 DI::profiler()->stopRecording();
1428                 return $body;
1429         }
1430
1431         /**
1432          * Callback function to replace a Friendica style mention in a mention with the nickname
1433          *
1434          * @param array $match Matching values for the callback
1435          * @return string Replaced mention or empty string
1436          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1437          */
1438         private static function mentionCallback(array $match): string
1439         {
1440                 if (empty($match[2])) {
1441                         return '';
1442                 }
1443
1444                 $data = Contact::getByURL($match[2], false, ['url', 'nick']);
1445                 if (empty($data['nick'])) {
1446                         return $match[0];
1447                 }
1448
1449                 return $match[1] . '[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
1450         }
1451
1452         /**
1453          * Converts a BBCode message for a given URI-ID to a HTML message
1454          *
1455          * BBcode 2 HTML was written by WAY2WEB.net
1456          * extended to work with Mistpark/Friendica - Mike Macgirvin
1457          *
1458          * Simple HTML values meaning:
1459          * - 0: Friendica display
1460          * - 1: Unused
1461          * - 2: Used for Windows Phone push, Friendica API
1462          * - 3: Used before converting to Markdown in bb2diaspora.php
1463          * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1464          * - 5: Unused
1465          * - 6: Unused
1466          * - 7: Used for dfrn, OStatus
1467          * - 8: Used for Twitter, WP backlink text setting
1468          * - 9: ActivityPub
1469          *
1470          * @param int    $uriid
1471          * @param string $text
1472          * @param int    $simple_html
1473          * @return string
1474          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1475          */
1476         public static function convertForUriId(int $uriid = null, string $text = null, int $simple_html = self::INTERNAL): string
1477         {
1478                 $try_oembed = ($simple_html == self::INTERNAL);
1479
1480                 return self::convert($text ?? '', $try_oembed, $simple_html, false, $uriid ?? 0);
1481         }
1482
1483         /**
1484          * Converts a BBCode message to HTML message
1485          *
1486          * BBcode 2 HTML was written by WAY2WEB.net
1487          * extended to work with Mistpark/Friendica - Mike Macgirvin
1488          *
1489          * Simple HTML values meaning:
1490          * - 0: Friendica display
1491          * - 1: Unused
1492          * - 2: Used for Windows Phone push, Friendica API
1493          * - 3: Used before converting to Markdown in bb2diaspora.php
1494          * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1495          * - 5: Unused
1496          * - 6: Unused
1497          * - 7: Used for dfrn, OStatus
1498          * - 8: Used for Twitter, WP backlink text setting
1499          * - 9: ActivityPub
1500          *
1501          * @param string $text
1502          * @param bool   $try_oembed
1503          * @param int    $simple_html
1504          * @param bool   $for_plaintext
1505          * @param int    $uriid
1506          * @return string Converted code or empty string
1507          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1508          */
1509         public static function convert(string $text = null, bool $try_oembed = true, int $simple_html = self::INTERNAL, bool $for_plaintext = false, int $uriid = 0): string
1510         {
1511                 // Accounting for null default column values
1512                 if (is_null($text) || $text === '') {
1513                         return '';
1514                 }
1515
1516                 DI::profiler()->startRecording('rendering');
1517
1518                 Hook::callAll('bbcode', $text);
1519
1520                 $a = DI::app();
1521
1522                 $text = self::performWithEscapedTags($text, ['code'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1523                         $text = self::performWithEscapedTags($text, ['noparse', 'nobb', 'pre'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1524                                 /*
1525                                  * preg_match_callback function to replace potential Oembed tags with Oembed content
1526                                  *
1527                                  * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1528                                  * $match[1] = $url
1529                                  * $match[2] = $title or absent
1530                                  */
1531                                 $try_oembed_callback = function (array $match)
1532                                 {
1533                                         $url = $match[1];
1534                                         $title = $match[2] ?? '';
1535
1536                                         try {
1537                                                 $return = OEmbed::getHTML($url, $title);
1538                                         } catch (Exception $ex) {
1539                                                 $return = $match[0];
1540                                         }
1541
1542                                         return $return;
1543                                 };
1544
1545                                 // Remove the abstract element. It is a non visible element.
1546                                 $text = self::stripAbstract($text);
1547
1548                                 // Line ending normalisation
1549                                 $text = str_replace("\r\n", "\n", $text);
1550
1551                                 // Move new lines outside of tags
1552                                 $text = preg_replace("#\[(\w*)](\n*)#ism", '$2[$1]', $text);
1553                                 $text = preg_replace("#(\n*)\[/(\w*)]#ism", '[/$2]$1', $text);
1554
1555                                 // Extract the private images which use data urls since preg has issues with
1556                                 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1557                                 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1558
1559                                 $extracted = self::extractImagesFromItemBody($text);
1560                                 $text = $extracted['body'];
1561                                 $saved_image = $extracted['images'];
1562
1563                                 // If we find any event code, turn it into an event.
1564                                 // After we're finished processing the bbcode we'll
1565                                 // replace all of the event code with a reformatted version.
1566
1567                                 $ev = Event::fromBBCode($text);
1568
1569                                 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1570                                 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1571
1572                                 $text = str_replace("<", "&lt;", $text);
1573                                 $text = str_replace(">", "&gt;", $text);
1574
1575                                 // remove some newlines before the general conversion
1576                                 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
1577                                 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
1578
1579                                 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1580                                 if (!$try_oembed) {
1581                                         $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1582                                 }
1583
1584                                 // Remove linefeeds inside of the table elements. See issue #6799
1585                                 $search = ["\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1586                                         "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1587                                         "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1588                                         "\n[hr]", "[hr]\n", " [hr]", "[hr] ",
1589                                         "\n[attachment ", " [attachment ", "\n[/attachment]", "[/attachment]\n", " [/attachment]", "[/attachment] ",
1590                                         "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] "];
1591                                 $replace = ["[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1592                                         "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1593                                         "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1594                                         "[hr]", "[hr]", "[hr]", "[hr]",
1595                                         "[attachment ", "[attachment ", "[/attachment]", "[/attachment]", "[/attachment]", "[/attachment]",
1596                                         "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]"];
1597                                 do {
1598                                         $oldtext = $text;
1599                                         $text = str_replace($search, $replace, $text);
1600                                 } while ($oldtext != $text);
1601
1602                                 // Replace these here only once
1603                                 $search = ["\n[table]", "[/table]\n"];
1604                                 $replace = ["[table]", "[/table]"];
1605                                 $text = str_replace($search, $replace, $text);
1606
1607                                 // Trim new lines regardless of the system.remove_multiplicated_lines config value
1608                                 $text = trim($text, "\n");
1609
1610                                 // removing multiplicated newlines
1611                                 if (DI::config()->get('system', 'remove_multiplicated_lines')) {
1612                                         $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",
1613                                                         "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1614                                         $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[*]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1615                                                         "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1616                                         do {
1617                                                 $oldtext = $text;
1618                                                 $text = str_replace($search, $replace, $text);
1619                                         } while ($oldtext != $text);
1620                                 }
1621
1622                                 /// @todo Have a closer look at the different html modes
1623                                 // Handle attached links or videos
1624                                 if (in_array($simple_html, [self::API, self::ACTIVITYPUB])) {
1625                                         $text = self::removeAttachment($text);
1626                                 } elseif (!in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::CONNECTORS])) {
1627                                         $text = self::removeAttachment($text, true);
1628                                 } else {
1629                                         $text = self::convertAttachment($text, $simple_html, $try_oembed, [], $uriid);
1630                                 }
1631
1632                                 $nosmile = strpos($text, '[nosmile]') !== false;
1633                                 $text = str_replace('[nosmile]', '', $text);
1634
1635                                 // Replace non graphical smilies for external posts
1636                                 if (!$nosmile) {
1637                                         $text = self::performWithEscapedTags($text, ['img'], function ($text) use ($simple_html, $for_plaintext) {
1638                                                 return Smilies::replace($text, ($simple_html != self::INTERNAL) || $for_plaintext);
1639                                         });
1640                                 }
1641
1642                                 // leave open the posibility of [map=something]
1643                                 // this is replaced in Item::prepareBody() which has knowledge of the item location
1644                                 if (strpos($text, '[/map]') !== false) {
1645                                         $text = preg_replace_callback(
1646                                                 "/\[map\](.*?)\[\/map\]/ism",
1647                                                 function ($match) use ($simple_html) {
1648                                                         return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1649                                                 },
1650                                                 $text
1651                                         );
1652                                 }
1653
1654                                 if (strpos($text, '[map=') !== false) {
1655                                         $text = preg_replace_callback(
1656                                                 "/\[map=(.*?)\]/ism",
1657                                                 function ($match) use ($simple_html) {
1658                                                         return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1659                                                 },
1660                                                 $text
1661                                         );
1662                                 }
1663
1664                                 if (strpos($text, '[map]') !== false) {
1665                                         $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1666                                 }
1667
1668                                 // Check for headers
1669                                 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1670                                 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1671                                 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1672                                 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1673                                 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1674                                 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
1675
1676                                 // Check for paragraph
1677                                 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1678
1679                                 // Check for bold text
1680                                 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1681
1682                                 // Check for Italics text
1683                                 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1684
1685                                 // Check for Underline text
1686                                 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1687
1688                                 // Check for strike-through text
1689                                 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1690
1691                                 // Check for over-line text
1692                                 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1693
1694                                 // Check for colored text
1695                                 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1696
1697                                 // Check for sized text
1698                                 // [size=50] --> font-size: 50px (with the unit).
1699                                 if ($simple_html != self::DIASPORA) {
1700                                         $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1px;line-height:normal;">$2</span>', $text);
1701                                         $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1;line-height:normal;">$2</span>', $text);
1702                                 } else {
1703                                         // Issue 2199: Diaspora doesn't interpret the construct above, nor the <small> or <big> element
1704                                         $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "$2", $text);
1705                                 }
1706
1707
1708                                 // Check for centered text
1709                                 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", '<div style="text-align:center;">$1</div>', $text);
1710
1711                                 // Check for list text
1712                                 $text = str_replace("[*]", "<li>", $text);
1713
1714                                 // Check for block-level custom CSS
1715                                 $text = preg_replace('#(?<=^|\n)\[style=(.*?)](.*?)\[/style](?:\n|$)#ism', '<div style="$1">$2</div>', $text);
1716
1717                                 // Check for inline custom CSS
1718                                 $text = preg_replace("(\[style=(.*?)\](.*?)\[\/style\])ism", '<span style="$1">$2</span>', $text);
1719
1720                                 // Mastodon Emoji (internal tag, do not document for users)
1721                                 $text = preg_replace("(\[emoji=(.*?)](.*?)\[/emoji])ism", '<span class="mastodon emoji"><img src="$1" alt="$2" title="$2"/></span>', $text);
1722
1723                                 // Check for CSS classes
1724                                 // @deprecated since 2021.12, left for backward-compatibility reasons
1725                                 $text = preg_replace("(\[class=(.*?)\](.*?)\[\/class\])ism", '<span class="$1">$2</span>', $text);
1726                                 // Add HTML new lines
1727                                 $text = str_replace("\n", '<br>', $text);
1728
1729                                 // handle nested lists
1730                                 $endlessloop = 0;
1731
1732                                 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1733                                                 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1734                                                 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1735                                                 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1736                                         $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1737                                         $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1738                                         $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1739                                         $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1740                                         $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1741                                         $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1742                                         $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1743                                         $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1744                                         $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1745                                         $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1746                                 }
1747
1748                                 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1749                                 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1750                                 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1751                                 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
1752
1753                                 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1754                                 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1755
1756                                 $text = str_replace('[hr]', '<hr />', $text);
1757
1758                                 if (!$for_plaintext) {
1759                                         $text = self::performWithEscapedTags($text, ['url', 'img', 'audio', 'video', 'youtube', 'vimeo', 'share', 'attachment', 'iframe', 'bookmark'], function ($text) {
1760                                                 return preg_replace(Strings::autoLinkRegEx(), '[url]$1[/url]', $text);
1761                                         });
1762                                 }
1763
1764                                 // Check for font change text
1765                                 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1766
1767                                 // Declare the format for [spoiler] layout
1768                                 $SpoilerLayout = '<details class="spoiler"><summary>' . DI::l10n()->t('Click to open/close') . '</summary>$1</details>';
1769
1770                                 // Check for [spoiler] text
1771                                 // handle nested quotes
1772                                 $endlessloop = 0;
1773                                 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1774                                         $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", $SpoilerLayout, $text);
1775                                 }
1776
1777                                 // Check for [spoiler=Title] text
1778
1779                                 // handle nested quotes
1780                                 $endlessloop = 0;
1781                                 while ((strpos($text, "[/spoiler]")!== false)  && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1782                                         $text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1783                                                 '<details class="spoiler"><summary>$1</summary>$2</details>',
1784                                                 $text);
1785                                 }
1786
1787                                 // Declare the format for [quote] layout
1788                                 $QuoteLayout = '<blockquote>$1</blockquote>';
1789
1790                                 // Check for [quote] text
1791                                 // handle nested quotes
1792                                 $endlessloop = 0;
1793                                 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1794                                         $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1795                                 }
1796
1797                                 // Check for [quote=Author] text
1798
1799                                 $t_wrote = DI::l10n()->t('$1 wrote:');
1800
1801                                 // handle nested quotes
1802                                 $endlessloop = 0;
1803                                 while ((strpos($text, "[/quote]")!== false)  && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1804                                         $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1805                                                 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1806                                                 $text);
1807                                 }
1808
1809
1810                                 // [img=widthxheight]image source[/img]
1811                                 $text = preg_replace_callback(
1812                                         "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1813                                         function ($matches) use ($simple_html, $uriid) {
1814                                                 if (strpos($matches[3], "data:image/") === 0) {
1815                                                         return $matches[0];
1816                                                 }
1817
1818                                                 $matches[3] = self::proxyUrl($matches[3], $simple_html, $uriid);
1819                                                 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1820                                         },
1821                                         $text
1822                                 );
1823
1824                                 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1825                                 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1826
1827                                 $text = preg_replace_callback("/\[img\=(.*?)\](.*?)\[\/img\]/ism",
1828                                         function ($matches) use ($simple_html, $uriid) {
1829                                                 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1830                                                 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1831                                                 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '" title="' . $matches[2] . '">';
1832                                         },
1833                                         $text);
1834
1835                                 // Images
1836                                 // [img]pathtoimage[/img]
1837                                 $text = preg_replace_callback(
1838                                         "/\[img\](.*?)\[\/img\]/ism",
1839                                         function ($matches) use ($simple_html, $uriid) {
1840                                                 if (strpos($matches[1], "data:image/") === 0) {
1841                                                         return $matches[0];
1842                                                 }
1843
1844                                                 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1845                                                 return "[img]" . $matches[1] . "[/img]";
1846                                         },
1847                                         $text
1848                                 );
1849
1850                                 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1851                                 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1852
1853                                 $text = self::convertImages($text, $simple_html, $uriid);
1854
1855                                 $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);
1856                                 $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>', $text);
1857                                 //$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);
1858
1859                                 // Simplify "video" element
1860                                 $text = preg_replace('(\[video[^\]]*?\ssrc\s?=\s?([^\s\]]+)[^\]]*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
1861
1862                                 if ($try_oembed) {
1863                                         // html5 video and audio
1864                                         $text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism",
1865                                                 '<video src="$1" controls width="100%" height="auto"><a href="$1">$1</a></video>', $text);
1866
1867                                         $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1868                                         $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1869
1870                                         $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1871                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1872                                         $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism", '<audio src="$1" controls><a href="$1">$1</a></audio>', $text);
1873                                 } else {
1874                                         $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1875                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1876                                         $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1877                                                 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1878                                 }
1879
1880                                 // Backward compatibility, [iframe] support has been removed in version 2020.12
1881                                 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1882
1883                                 // Youtube extensions
1884                                 if ($try_oembed) {
1885                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1886                                         $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1887                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/shorts\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1888                                         $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1889                                 }
1890
1891                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1892                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1893                                 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/shorts\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1894                                 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1895
1896                                 if ($try_oembed) {
1897                                         $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);
1898                                 } else {
1899                                         $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1900                                                 '<a href="https://www.youtube.com/watch?v=$1" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=$1</a>', $text);
1901                                 }
1902
1903                                 if ($try_oembed) {
1904                                         $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1905                                         $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1906                                 }
1907
1908                                 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1909                                 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1910
1911                                 if ($try_oembed) {
1912                                         $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);
1913                                 } else {
1914                                         $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1915                                                 '<a href="https://vimeo.com/$1" target="_blank" rel="noopener noreferrer">https://vimeo.com/$1</a>', $text);
1916                                 }
1917
1918                                 // oembed tag
1919                                 $text = OEmbed::BBCode2HTML($text);
1920
1921                                 // Avoid triple linefeeds through oembed
1922                                 $text = str_replace("<br style='clear:left'></span><br><br>", "<br style='clear:left'></span><br>", $text);
1923
1924                                 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1925                                 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1926                                 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1927                                 // start which is always required). Allow desc with a missing summary for compatibility.
1928
1929                                 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1930                                         $sub = Event::getHTML($ev, $simple_html, $uriid);
1931
1932                                         $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1933                                         $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1934                                         $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1935                                         $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1936                                         $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1937                                         $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1938                                 }
1939
1940                                 if (!$for_plaintext && DI::config()->get('system', 'big_emojis') && ($simple_html != self::DIASPORA)) {
1941                                         $conv = html_entity_decode(str_replace([' ', "\n", "\r"], '', $text));
1942                                         // Emojis are always 4 byte Unicode characters
1943                                         if (!empty($conv) && (strlen($conv) / mb_strlen($conv) == 4)) {
1944                                                 $text = '<span style="font-size: xx-large; line-height: normal;">' . $text . '</span>';
1945                                         }
1946                                 }
1947
1948                                 // Handle mentions and hashtag links
1949                                 if ($simple_html == self::DIASPORA) {
1950                                         // The ! is converted to @ since Diaspora only understands the @
1951                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1952                                                 '@<a href="$2">$3</a>',
1953                                                 $text);
1954                                 } elseif (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1955                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1956                                                 '<span class="h-card"><a href="$2" class="u-url mention">$1<span>$3</span></a></span>',
1957                                                 $text);
1958                                         $text = preg_replace("/([#])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1959                                                 '<a href="$2" class="mention hashtag" rel="tag">$1<span>$3</span></a>',
1960                                                 $text);
1961                                 } elseif (in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::API])) {
1962                                         $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1963                                                 '<bdi>$1<a href="$2" class="userinfo mention" title="$3">$3</a></bdi>',
1964                                                 $text);
1965                                 } else {
1966                                         $text = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $text);
1967                                 }
1968
1969                                 if (!$for_plaintext) {
1970                                         if (in_array($simple_html, [self::OSTATUS, self::API, self::ACTIVITYPUB])) {
1971                                                 $text = preg_replace_callback("/\[url\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1972                                                 $text = preg_replace_callback("/\[url\=(.*?)\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1973                                         }
1974                                 } else {
1975                                         $text = preg_replace("(\[url\](.*?)\[\/url\])ism", " $1 ", $text);
1976                                         $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
1977                                 }
1978
1979                                 // Bookmarks in red - will be converted to bookmarks in friendica
1980                                 $text = preg_replace("/#\^\[url\](.*?)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1981                                 $text = preg_replace("/#\^\[url\=(.*?)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1982                                 $text = preg_replace("/#\[url\=.*?\]\^\[\/url\]\[url\=(.*?)\](.*?)\[\/url\]/i",
1983                                                         "[bookmark=$1]$2[/bookmark]", $text);
1984
1985                                 if (in_array($simple_html, [self::OSTATUS, self::TWITTER])) {
1986                                         $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
1987                                         //$text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $text);
1988                                         $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]', $text);
1989                                 }
1990
1991                                 // Perform URL Search
1992                                 if ($try_oembed) {
1993                                         $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1994                                 }
1995
1996                                 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1997
1998                                 // Handle Diaspora posts
1999                                 $text = preg_replace_callback(
2000                                         "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
2001                                         function ($match) {
2002                                                 return "[url=" . DI::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
2003                                         }, $text
2004                                 );
2005
2006                                 $text = preg_replace_callback(
2007                                         "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
2008                                         function ($match) {
2009                                                 return "[url=" . DI::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
2010                                         }, $text
2011                                 );
2012
2013                                 // Server independent link to posts and comments
2014                                 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
2015                                 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
2016                                 $text = preg_replace($expression, DI::baseUrl()."/display/$1", $text);
2017
2018                                 /* Tag conversion
2019                                  * Supports:
2020                                  * - #[url=<anything>]<term>[/url]
2021                                  * - [url=<anything>]#<term>[/url]
2022                                  */
2023                                 self::performWithEscapedTags($text, ['url', 'share'], function ($text) use ($simple_html) {
2024                                         $text = preg_replace_callback("/(?:#\[url\=[^\[\]]*\]|\[url\=[^\[\]]*\]#)(.*?)\[\/url\]/ism", function($matches) use ($simple_html) {
2025                                                 if ($simple_html == self::ACTIVITYPUB) {
2026                                                         return '<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
2027                                                                 . '" data-tag="' . XML::escape($matches[1]) . '" rel="tag ugc">#'
2028                                                                 . XML::escape($matches[1]) . '</a>';
2029                                                 } else {
2030                                                         return '#<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
2031                                                                 . '" class="tag" rel="tag" title="' . XML::escape($matches[1]) . '">'
2032                                                                 . XML::escape($matches[1]) . '</a>';
2033                                                 }
2034                                         }, $text);
2035                                         return $text;
2036                                 });
2037
2038                                 // We need no target="_blank" rel="noopener noreferrer" for local links
2039                                 // convert links start with DI::baseUrl() as local link without the target="_blank" rel="noopener noreferrer" attribute
2040                                 $escapedBaseUrl = preg_quote(DI::baseUrl(), '/');
2041                                 $text = preg_replace("/\[url\](".$escapedBaseUrl.".*?)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
2042                                 $text = preg_replace("/\[url\=(".$escapedBaseUrl.".*?)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
2043
2044                                 $text = preg_replace("/\[url\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
2045                                 $text = preg_replace("/\[url\=(.*?)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
2046
2047                                 // Red compatibility, though the link can't be authenticated on Friendica
2048                                 $text = preg_replace("/\[zrl\=(.*?)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
2049
2050
2051                                 // we may need to restrict this further if it picks up too many strays
2052                                 // link acct:user@host to a webfinger profile redirector
2053
2054                                 $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);
2055
2056                                 // Perform MAIL Search
2057                                 $text = preg_replace("/\[mail\](.*?)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
2058                                 $text = preg_replace("/\[mail\=(.*?)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
2059
2060                                 /// @todo What is the meaning of these lines?
2061                                 $text = preg_replace('/\[\&amp\;([#a-z0-9]+)\;\]/', '&$1;', $text);
2062                                 $text = preg_replace('/\&\#039\;/', '\'', $text);
2063
2064                                 // Currently deactivated, it made problems with " inside of alt texts.
2065                                 //$text = preg_replace('/\&quot\;/', '"', $text);
2066
2067                                 // fix any escaped ampersands that may have been converted into links
2068                                 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
2069
2070                                 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
2071                                 $allowed_src_protocols = ['//', 'http://', 'https://', 'redir/', 'cid:'];
2072
2073                                 array_walk($allowed_src_protocols, function(&$value) { $value = preg_quote($value, '#');});
2074
2075                                 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
2076                                                          '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . DI::l10n()->t('Invalid source protocol') . '">', $text);
2077
2078                                 // sanitize href attributes (only allowlisted protocols URLs)
2079                                 // default value for backward compatibility
2080                                 $allowed_link_protocols = DI::config()->get('system', 'allowed_link_protocols', []);
2081
2082                                 // Always allowed protocol even if config isn't set or not including it
2083                                 $allowed_link_protocols[] = '//';
2084                                 $allowed_link_protocols[] = 'http://';
2085                                 $allowed_link_protocols[] = 'https://';
2086                                 $allowed_link_protocols[] = 'redir/';
2087
2088                                 array_walk($allowed_link_protocols, function(&$value) { $value = preg_quote($value, '#');});
2089
2090                                 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
2091                                 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . DI::l10n()->t('Invalid link protocol') . '">', $text);
2092
2093                                 // Shared content
2094                                 $text = self::convertShare(
2095                                         $text,
2096                                         function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
2097                                                 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
2098                                         }, $uriid
2099                                 );
2100
2101                                 $text = self::interpolateSavedImagesIntoItemBody($uriid, $text, $saved_image);
2102
2103                                 return $text;
2104                         }); // Escaped noparse, nobb, pre
2105
2106                         // Remove escaping tags and replace new lines that remain
2107                         $text = preg_replace_callback('/\[(noparse|nobb)](.*?)\[\/\1]/ism', function ($match) {
2108                                 return str_replace("\n", "<br>", $match[2]);
2109                         }, $text);
2110
2111                         // Additionally, [pre] tags preserve spaces
2112                         $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", function ($match) {
2113                                 return str_replace([' ', "\n"], ['&nbsp;', "<br>"], htmlentities($match[1], ENT_NOQUOTES,'UTF-8'));
2114                         }, $text);
2115
2116                         return $text;
2117                 }); // Escaped code
2118
2119                 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
2120                         function ($matches) {
2121                                 if (strpos($matches[2], "\n") !== false) {
2122                                         $return = '<pre><code class="language-' . trim($matches[1]) . '">' . htmlentities(trim($matches[2], "\n\r"), ENT_NOQUOTES, 'UTF-8') . '</code></pre>';
2123                                 } else {
2124                                         $return = '<code>' . htmlentities($matches[2], ENT_NOQUOTES, 'UTF-8') . '</code>';
2125                                 }
2126
2127                                 return $return;
2128                         },
2129                         $text
2130                 );
2131
2132                 // Default iframe allowed domains/path
2133                 $allowedIframeDomains = [
2134                         DI::baseUrl()->getHostname()
2135                         . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : '')
2136                         . '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
2137                         'www.youtube.com/embed/',
2138                         'player.vimeo.com/video/',
2139                 ];
2140
2141                 $allowedIframeDomains = array_merge(
2142                         $allowedIframeDomains,
2143                         DI::config()->get('system', 'allowed_oembed') ?
2144                                 explode(',', DI::config()->get('system', 'allowed_oembed'))
2145                                 : []
2146                 );
2147
2148                 $text = HTML::purify($text, $allowedIframeDomains);
2149                 DI::profiler()->stopRecording();
2150
2151                 return trim($text);
2152         }
2153
2154         /**
2155          * Strips the "abstract" tag from the provided text
2156          *
2157          * @param string $text The text with BBCode
2158          * @return string The same text - but without "abstract" element
2159          */
2160         public static function stripAbstract(string $text): string
2161         {
2162                 DI::profiler()->startRecording('rendering');
2163
2164                 $text = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) {
2165                         $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", ' ', $text);
2166                         $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", ' ', $text);
2167                         return $text;
2168                 });
2169
2170                 DI::profiler()->stopRecording();
2171                 return $text;
2172         }
2173
2174         /**
2175          * Returns the value of the "abstract" element
2176          *
2177          * @param string $text  The text that maybe contains the element
2178          * @param string $addon The addon for which the abstract is meant for
2179          * @return string The abstract
2180          */
2181         public static function getAbstract(string $text, string $addon = ''): string
2182         {
2183                 DI::profiler()->startRecording('rendering');
2184                 $addon = strtolower($addon);
2185
2186                 $abstract = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) use ($addon) {
2187                         if ($addon && preg_match('#\[abstract=' . preg_quote($addon, '#') . '](.*?)\[/abstract]#ism', $text, $matches)) {
2188                                 return $matches[1];
2189                         }
2190
2191                         if (preg_match("#\[abstract](.*?)\[/abstract]#ism", $text, $matches)) {
2192                                 return $matches[1];
2193                         }
2194
2195                         return '';
2196                 });
2197
2198                 DI::profiler()->stopRecording();
2199                 return $abstract;
2200         }
2201
2202         /**
2203          * Callback function to replace a Friendica style mention in a mention for Diaspora
2204          *
2205          * @param array $match Matching values for the callback
2206          *                     [1] = Mention type (! or @)
2207          *                     [2] = Name
2208          *                     [3] = Address
2209          * @return string Replaced mention
2210          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2211          * @throws \ImagickException
2212          */
2213         private static function bbCodeMention2DiasporaCallback(array $match): string
2214         {
2215                 $contact = Contact::getByURL($match[3], false, ['addr']);
2216                 if (empty($contact['addr'])) {
2217                         return $match[0];
2218                 }
2219
2220                 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
2221                 return $mention;
2222         }
2223
2224         /**
2225          * Converts a BBCode text into Markdown
2226          *
2227          * This function converts a BBCode item body to be sent to Markdown-enabled
2228          * systems like Diaspora and Libertree
2229          *
2230          * @param string $text
2231          * @param bool   $for_diaspora Diaspora requires more changes than Libertree
2232          * @return string
2233          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2234          */
2235         public static function toMarkdown(string $text, bool $for_diaspora = true): string
2236         {
2237                 DI::profiler()->startRecording('rendering');
2238                 $original_text = $text;
2239
2240                 // Since Diaspora is creating a summary for links, this function removes them before posting
2241                 if ($for_diaspora) {
2242                         $text = self::removeShareInformation($text);
2243                 }
2244
2245                 /**
2246                  * Transform #tags, strip off the [url] and replace spaces with underscore
2247                  */
2248                 $url_search_string = "^\[\]";
2249                 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
2250                         function ($matches) {
2251                                 return '#' . str_replace(' ', '_', $matches[2]);
2252                         },
2253                         $text
2254                 );
2255
2256                 // Converting images with size parameters to simple images. Markdown doesn't know it.
2257                 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
2258
2259                 // Convert it to HTML - don't try oembed
2260                 if ($for_diaspora) {
2261                         $text = self::convert($text, false, self::DIASPORA);
2262
2263                         // Add all tags that maybe were removed
2264                         if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
2265                                 $tagline = '';
2266                                 foreach ($tags[2] as $tag) {
2267                                         $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
2268                                         if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
2269                                                 $tagline .= '#' . $tag . ' ';
2270                                         }
2271                                 }
2272                                 $text = $text . ' ' . $tagline;
2273                         }
2274                 } else {
2275                         $text = self::convert($text, false, self::CONNECTORS);
2276                 }
2277
2278                 // If a link is followed by a quote then there should be a newline before it
2279                 // Maybe we should make this newline at every time before a quote.
2280                 $text = str_replace(['</a><blockquote>'], ['</a><br><blockquote>'], $text);
2281
2282                 // Now convert HTML to Markdown
2283                 $text = HTML::toMarkdown($text);
2284
2285                 // Libertree has a problem with escaped hashtags.
2286                 $text = str_replace(['\#'], ['#'], $text);
2287
2288                 // Remove any leading or trailing whitespace, as this will mess up
2289                 // the Diaspora signature verification and cause the item to disappear
2290                 $text = trim($text);
2291
2292                 if ($for_diaspora) {
2293                         $url_search_string = "^\[\]";
2294                         $text = preg_replace_callback(
2295                                 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
2296                                 ['self', 'bbCodeMention2DiasporaCallback'],
2297                                 $text
2298                         );
2299                 }
2300
2301                 Hook::callAll('bb2diaspora', $text);
2302
2303                 DI::profiler()->stopRecording();
2304                 return $text;
2305         }
2306
2307         /**
2308          * Pull out all #hashtags and @person tags from $string.
2309          *
2310          * We also get @person@domain.com - which would make
2311          * the regex quite complicated as tags can also
2312          * end a sentence. So we'll run through our results
2313          * and strip the period from any tags which end with one.
2314          * Returns array of tags found, or empty array.
2315          *
2316          * @param string $string Post content
2317          * @return array List of tag and person names
2318          */
2319         public static function getTags(string $string): array
2320         {
2321                 DI::profiler()->startRecording('rendering');
2322                 $ret = [];
2323
2324                 self::performWithEscapedTags($string, ['noparse', 'pre', 'code', 'img'], function ($string) use (&$ret) {
2325                         // Convert hashtag links to hashtags
2326                         $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
2327
2328                         // Force line feeds at bbtags
2329                         $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
2330
2331                         // ignore anything in a bbtag
2332                         $string = preg_replace('/\[(.*?)\]/sm', '', $string);
2333
2334                         // Match full names against @tags including the space between first and last
2335                         // We will look these up afterward to see if they are full names or not recognisable.
2336
2337                         if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
2338                                 foreach ($matches[1] as $match) {
2339                                         if (strstr($match, ']')) {
2340                                                 // we might be inside a bbcode color tag - leave it alone
2341                                                 continue;
2342                                         }
2343
2344                                         if (substr($match, -1, 1) === '.') {
2345                                                 $ret[] = substr($match, 0, -1);
2346                                         } else {
2347                                                 $ret[] = $match;
2348                                         }
2349                                 }
2350                         }
2351
2352                         // Otherwise pull out single word tags. These can be @nickname, @first_last
2353                         // and #hash tags.
2354
2355                         if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
2356                                 foreach ($matches[1] as $match) {
2357                                         if (strstr($match, ']')) {
2358                                                 // we might be inside a bbcode color tag - leave it alone
2359                                                 continue;
2360                                         }
2361
2362                                         // try not to catch url fragments
2363                                         if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
2364                                                 continue;
2365                                         }
2366
2367                                         $ret[] = $match;
2368                                 }
2369                         }
2370                 });
2371
2372                 DI::profiler()->stopRecording();
2373                 return array_unique($ret);
2374         }
2375
2376         /**
2377          * Expand tags to URLs, checks the tag is at the start of a line or preceded by a non-word character
2378          *
2379          * @param string $body HTML/BBCode
2380          * @return string body with expanded tags
2381          */
2382         public static function expandTags(string $body): string
2383         {
2384                 return preg_replace_callback("/(?<=\W|^)([!#@])([^\^ \x0D\x0A,;:?'\"]*[^\^ \x0D\x0A,;:?!'\".])/",
2385                         function (array $match) {
2386                                 switch ($match[1]) {
2387                                         case '!':
2388                                         case '@':
2389                                                 $contact = Contact::getByURL($match[2]);
2390                                                 if (!empty($contact)) {
2391                                                         return $match[1] . '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2392                                                 } else {
2393                                                         return $match[1] . $match[2];
2394                                                 }
2395                                                 break;
2396
2397                                         case '#':
2398                                         default:
2399                                                 return $match[1] . '[url=' . DI::baseUrl() . '/search?tag=' . $match[2] . ']' . $match[2] . '[/url]';
2400                                 }
2401                         }, $body);
2402         }
2403
2404         /**
2405          * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
2406          *
2407          * @param string   $text HTML/BBCode
2408          * @param array    $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
2409          * @param callable $callback
2410          * @return string
2411          * @see Strings::performWithEscapedBlocks
2412          */
2413         public static function performWithEscapedTags(string $text, array $tagList, callable $callback): string
2414         {
2415                 $tagList = array_map('preg_quote', $tagList);
2416
2417                 return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
2418         }
2419
2420         /**
2421          * Replaces mentions in the provided message body in BBCode links for the provided user and network if any
2422          *
2423          * @param string $body HTML/BBCode
2424          * @param int $profile_uid Profile user id
2425          * @param string $network Network name
2426          * @return string HTML/BBCode with inserted images
2427          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2428          * @throws \ImagickException
2429          */
2430         public static function setMentions(string $body, $profile_uid = 0, $network = '')
2431         {
2432                 DI::profiler()->startRecording('rendering');
2433                 $body = self::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
2434                         $tags = self::getTags($body);
2435
2436                         $tagged = [];
2437
2438                         foreach ($tags as $tag) {
2439                                 $tag_type = substr($tag, 0, 1);
2440
2441                                 if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
2442                                         continue;
2443                                 }
2444
2445                                 /*
2446                                  * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
2447                                  * Robert Johnson should be first in the $tags array
2448                                  */
2449                                 foreach ($tagged as $nextTag) {
2450                                         if (stristr($nextTag, $tag . ' ')) {
2451                                                 continue 2;
2452                                         }
2453                                 }
2454
2455                                 if (($success = Item::replaceTag($body, $profile_uid, $tag, $network)) && $success['replaced']) {
2456                                         $tagged[] = $tag;
2457                                 }
2458                         }
2459
2460                         return $body;
2461                 });
2462
2463                 DI::profiler()->stopRecording();
2464                 return $body;
2465         }
2466
2467         /**
2468          * @param string      $author  Author display name
2469          * @param string      $profile Author profile URL
2470          * @param string      $avatar  Author profile picture URL
2471          * @param string      $link    Post source URL
2472          * @param string      $posted  Post created date
2473          * @param string|null $guid    Post guid (if any)
2474          * @param string|null $uri     Post uri (if any)
2475          * @return string
2476          * @TODO Rewrite to handle over whole record array
2477          */
2478         public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null, string $uri = null): string
2479         {
2480                 DI::profiler()->startRecording('rendering');
2481                 $header = "[share author='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $author) .
2482                         "' profile='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $profile) .
2483                         "' avatar='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $avatar) .
2484                         "' link='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $link) .
2485                         "' posted='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $posted);
2486
2487                 if ($guid) {
2488                         $header .= "' guid='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $guid);
2489                 }
2490
2491                 if ($uri) {
2492                         $header .= "' message_id='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $uri);
2493                 }
2494
2495                 $header  .= "']";
2496
2497                 DI::profiler()->stopRecording();
2498                 return $header;
2499         }
2500
2501         /**
2502          * Returns the BBCode relevant to embed the provided URL in a post body.
2503          * For media type, it will return [img], [video] and [audio] tags.
2504          * For regular web pages, it will either output a [bookmark] tag if title and description were provided,
2505          * an [attachment] tag or a simple [url] tag depending on $tryAttachment.
2506          *
2507          * @param string      $url
2508          * @param bool        $tryAttachment
2509          * @param string|null $title
2510          * @param string|null $description
2511          * @param string|null $tags
2512          * @return string
2513          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2514          * @see ParseUrl::getSiteinfoCached
2515          */
2516         public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
2517         {
2518                 DI::profiler()->startRecording('rendering');
2519                 DI::logger()->info($url);
2520
2521                 // If there is already some content information submitted we don't
2522                 // need to parse the url for content.
2523                 if (!empty($title) && !empty($description)) {
2524                         $title = str_replace(["\r", "\n"], ['', ''], $title);
2525
2526                         $description = '[quote]' . trim($description) . '[/quote]' . "\n";
2527
2528                         $str_tags = '';
2529                         if (!empty($tags)) {
2530                                 $arr_tags = ParseUrl::convertTagsToArray($tags);
2531                                 if (count($arr_tags)) {
2532                                         $str_tags = "\n" . implode(' ', $arr_tags) . "\n";
2533                                 }
2534                         }
2535
2536                         $result = sprintf('[bookmark=%s]%s[/bookmark]%s', $url, ($title) ? $title : $url, $description) . $str_tags;
2537
2538                         DI::logger()->info('(unparsed): returns: ' . $result);
2539
2540                         DI::profiler()->stopRecording();
2541                         return $result;
2542                 }
2543
2544                 $siteinfo = ParseUrl::getSiteinfoCached($url);
2545
2546                 if (in_array($siteinfo['type'], ['image', 'video', 'audio'])) {
2547                         switch ($siteinfo['type']) {
2548                                 case 'video':
2549                                         $bbcode = "\n" . '[video]' . $url . '[/video]' . "\n";
2550                                         break;
2551                                 case 'audio':
2552                                         $bbcode = "\n" . '[audio]' . $url . '[/audio]' . "\n";
2553                                         break;
2554                                 default:
2555                                         $bbcode = "\n" . '[img]' . $url . '[/img]' . "\n";
2556                                         break;
2557                         }
2558
2559                         DI::profiler()->stopRecording();
2560                         return $bbcode;
2561                 }
2562
2563                 unset($siteinfo['keywords']);
2564
2565                 // Bypass attachment if parse url for a comment
2566                 if (!$tryAttachment) {
2567                         DI::profiler()->stopRecording();
2568                         return "\n" . '[url=' . $url . ']' . $siteinfo['title'] . '[/url]';
2569                 }
2570
2571                 // Format it as BBCode attachment
2572                 $bbcode = "\n" . PageInfo::getFooterFromData($siteinfo);
2573                 DI::profiler()->stopRecording();
2574                 return $bbcode;
2575         }
2576 }