3 * @copyright Copyright (C) 2010-2023, the Friendica project
5 * @license GNU AGPL version 3 or any later version
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.
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.
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/>.
22 namespace Friendica\Content\Text;
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;
37 use Friendica\Model\Contact;
38 use Friendica\Model\Event;
39 use Friendica\Model\Post;
40 use Friendica\Model\Tag;
41 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
42 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
43 use Friendica\Util\Map;
44 use Friendica\Util\ParseUrl;
45 use Friendica\Util\Proxy;
46 use Friendica\Util\Strings;
47 use Friendica\Util\XML;
51 // Update this value to the current date whenever changes are made to BBCode::convert
52 const VERSION = '2021-07-28';
56 const MASTODON_API = 2;
59 const TWITTER_API = 5;
64 const ACTIVITYPUB = 9;
66 const TOP_ANCHOR = '<br class="top-anchor">';
67 const BOTTOM_ANCHOR = '<br class="button-anchor">';
69 const PREVIEW_NONE = 0;
70 const PREVIEW_NO_IMAGE = 1;
71 const PREVIEW_LARGE = 2;
72 const PREVIEW_SMALL = 3;
75 * Fetches attachment data that were generated with the "attachment" element
77 * @param string $body Message body
79 * 'type' -> Message type ('link', 'video', 'photo')
80 * 'text' -> Text before the shared message
81 * 'after' -> Text after the shared message
82 * 'image' -> Preview image of the message
83 * 'url' -> Url to the attached message
84 * 'title' -> Title of the attachment
85 * 'description' -> Description of the attachment
86 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
88 public static function getAttachmentData(string $body): array
90 DI::profiler()->startRecording('rendering');
99 'provider_name' => '',
100 'provider_url' => '',
105 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
106 DI::profiler()->stopRecording();
110 $attributes = $match[2];
112 $data['text'] = trim($match[1]);
114 foreach (['type', 'url', 'title', 'image', 'preview', 'publisher_name', 'publisher_url', 'author_name', 'author_url'] as $field) {
115 preg_match('/' . preg_quote($field, '/') . '=("|\')(.*?)\1/ism', $attributes, $matches);
116 $value = $matches[2] ?? '';
120 case 'publisher_name':
121 $data['provider_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
124 case 'publisher_url':
125 $data['provider_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
129 $data['author_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
130 if ($data['provider_name'] == $data['author_name']) {
131 $data['author_name'] = '';
136 $data['author_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
137 if ($data['provider_url'] == $data['author_url']) {
138 $data['author_url'] = '';
143 $value = self::convert(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), false, true);
144 $value = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
145 $value = str_replace(['[', ']'], ['[', ']'], $value);
146 $data['title'] = $value;
149 $data[$field] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
155 if (!in_array($data['type'], ['link', 'audio', 'photo', 'video'])) {
156 DI::profiler()->stopRecording();
160 $data['description'] = trim($match[3]);
162 $data['after'] = trim($match[4]);
164 $parts = parse_url($data['url']);
165 if (!empty($parts['scheme']) && !empty($parts['host'])) {
166 if (empty($data['provider_name'])) {
167 $data['provider_name'] = $parts['host'];
169 if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
170 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
172 if (!empty($parts['port'])) {
173 $data['provider_url'] .= ':' . $parts['port'];
178 DI::profiler()->stopRecording();
183 * Remove [attachment] BBCode and replaces it with a regular [url]
185 * @param string $body
186 * @param boolean $no_link_desc No link description
187 * @return string with replaced body
189 public static function replaceAttachment(string $body, bool $no_link_desc = false): string
191 return preg_replace_callback(
192 "/\s*\[attachment (.*?)\](.*?)\[\/attachment\]\s*/ism",
193 function ($match) use ($body, $no_link_desc) {
194 $attach_data = self::getAttachmentData($match[0]);
195 if (empty($attach_data['url'])) {
197 } elseif (strpos(str_replace($match[0], '', $body), $attach_data['url']) !== false) {
199 } elseif (empty($attach_data['title']) || $no_link_desc) {
200 return " \n[url]" . $attach_data['url'] . "[/url]\n";
202 return " \n[url=" . $attach_data['url'] . ']' . $attach_data['title'] . "[/url]\n";
210 * Remove [attachment] BBCode
212 * @param string $body
213 * @return string with removed attachment
215 public static function removeAttachment(string $body): string
217 return trim(preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body));
221 * Converts a BBCode text into plaintext
223 * @param string $text
224 * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
227 public static function toPlaintext(string $text, bool $keep_urls = true): string
229 DI::profiler()->startRecording('rendering');
230 // Remove pictures in advance to avoid unneeded proxy calls
231 $text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $2 ', $text);
232 $text = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $text);
235 $text = self::replaceAttachment($text);
237 $naked_text = HTML::toPlaintext(self::convert($text, false, 0, true), 0, !$keep_urls);
239 DI::profiler()->stopRecording();
243 private static function proxyUrl(string $image, int $simplehtml = self::INTERNAL, int $uriid = 0, string $size = ''): string
245 // Only send proxied pictures to API and for internal display
246 if (!in_array($simplehtml, [self::INTERNAL, self::MASTODON_API, self::TWITTER_API])) {
248 } elseif ($uriid > 0) {
249 return Post\Link::getByLink($uriid, $image, $size);
251 return Proxy::proxifyUrl($image, $size);
256 * Truncates imported message body string length to max_import_size
258 * The purpose of this function is to apply system message length limits to
259 * imported messages without including any embedded photos in the length
261 * @param string $body
263 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
265 public static function limitBodySize(string $body): string
267 DI::profiler()->startRecording('rendering');
268 $maxlen = DI::config()->get('config', 'max_import_size', 0);
270 // If the length of the body, including the embedded images, is smaller
271 // than the maximum, then don't waste time looking for the images
272 if ($maxlen && (strlen($body) > $maxlen)) {
274 Logger::info('the total body length exceeds the limit', ['maxlen' => $maxlen, 'body_len' => strlen($body)]);
280 $img_start = strpos($orig_body, '[img');
281 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
282 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
283 while (($img_st_close !== false) && ($img_end !== false)) {
285 $img_st_close++; // make it point to AFTER the closing bracket
286 $img_end += $img_start;
287 $img_end += strlen('[/img]');
289 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
290 // This is an embedded image
292 if (($textlen + $img_start) > $maxlen) {
293 if ($textlen < $maxlen) {
294 Logger::debug('the limit happens before an embedded image');
295 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
299 $new_body = $new_body . substr($orig_body, 0, $img_start);
300 $textlen += $img_start;
303 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
306 if (($textlen + $img_end) > $maxlen) {
307 if ($textlen < $maxlen) {
308 Logger::debug('the limit happens before the end of a non-embedded image');
309 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
313 $new_body = $new_body . substr($orig_body, 0, $img_end);
314 $textlen += $img_end;
317 $orig_body = substr($orig_body, $img_end);
319 if ($orig_body === false) {
320 // in case the body ends on a closing image tag
324 $img_start = strpos($orig_body, '[img');
325 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
326 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
329 if (($textlen + strlen($orig_body)) > $maxlen) {
330 if ($textlen < $maxlen) {
331 Logger::debug('the limit happens after the end of the last image');
332 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
335 Logger::debug('the text size with embedded images extracted did not violate the limit');
336 $new_body = $new_body . $orig_body;
339 DI::profiler()->stopRecording();
342 DI::profiler()->stopRecording();
348 * Processes [attachment] tags
350 * Note: Can produce a [bookmark] tag in the returned string
352 * @param string $text
353 * @param integer $simplehtml
354 * @param bool $tryoembed
358 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
360 public static function convertAttachment(string $text, int $simplehtml = self::INTERNAL, bool $tryoembed = true, array $data = [], int $uriid = 0, int $preview_mode = self::PREVIEW_LARGE): string
362 DI::profiler()->startRecording('rendering');
363 $data = $data ?: self::getAttachmentData($text);
364 if (empty($data) || empty($data['url'])) {
365 DI::profiler()->stopRecording();
369 if (isset($data['title'])) {
370 $data['title'] = strip_tags($data['title']);
371 $data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
376 if (((strpos($data['text'], '[img=') !== false) || (strpos($data['text'], '[img]') !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
377 $data['preview'] = $data['image'];
383 if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
384 $return = OEmbed::getHTML($data['url'], $data['title']);
386 throw new Exception('OEmbed is disabled for this attachment.');
388 } catch (Exception $e) {
389 $data['title'] = ($data['title'] ?? '') ?: $data['url'];
391 if ($simplehtml != self::CONNECTORS) {
392 $return = sprintf('<div class="type-%s">', $data['type']);
395 if ($preview_mode == self::PREVIEW_NO_IMAGE) {
396 unset($data['image']);
397 unset($data['preview']);
400 if (!empty($data['title']) && !empty($data['url'])) {
401 $preview_class = $preview_mode == self::PREVIEW_LARGE ? 'attachment-image' : 'attachment-preview';
402 if (!empty($data['image']) && empty($data['text']) && ($data['type'] == 'photo')) {
403 $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="' . $preview_class . '" /></a>', $data['url'], self::proxyUrl($data['image'], $simplehtml, $uriid), $data['title']);
405 if (!empty($data['image'])) {
406 $return .= sprintf('<a href="%s" target="_blank" rel="noopener noreferrer"><img src="%s" alt="" title="%s" class="' . $preview_class . '" /></a><br>', $data['url'], self::proxyUrl($data['image'], $simplehtml, $uriid), $data['title']);
407 } elseif (!empty($data['preview'])) {
408 $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']);
410 $return .= sprintf('<h4><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></h4>', $data['url'], $data['title']);
414 if (!empty($data['description']) && $data['description'] != $data['title']) {
416 $return .= sprintf('<blockquote>%s</blockquote>', trim(HTML::purify($data['description'])));
419 if (!empty($data['provider_url']) && !empty($data['provider_name'])) {
420 if (!empty($data['author_name'])) {
421 $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s (%s)</a></sup>', $data['provider_url'], $data['author_name'], $data['provider_name']);
423 $return .= sprintf('<sup><a href="%s" target="_blank" rel="noopener noreferrer">%s</a></sup>', $data['provider_url'], $data['provider_name']);
427 if ($simplehtml != self::CONNECTORS) {
432 DI::profiler()->stopRecording();
433 return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
436 public static function removeShareInformation(string $text, bool $plaintext = false, bool $nolink = false): string
438 DI::profiler()->startRecording('rendering');
439 $data = self::getAttachmentData($text);
442 DI::profiler()->stopRecording();
445 DI::profiler()->stopRecording();
446 return $data['text'] . ($data['after'] ?? '');
449 $title = htmlentities($data['title'] ?? '', ENT_QUOTES, 'UTF-8', false);
450 $text = htmlentities($data['text'], ENT_QUOTES, 'UTF-8', false);
451 if ($plaintext || (($title != '') && strstr($text, $title))) {
452 $data['title'] = $data['url'];
453 } elseif (($text != '') && strstr($title, $text)) {
454 $data['text'] = $data['title'];
455 $data['title'] = $data['url'];
458 if (empty($data['text']) && !empty($data['title']) && empty($data['url'])) {
459 DI::profiler()->stopRecording();
460 return $data['title'] . $data['after'];
463 // If the link already is included in the post, don't add it again
464 if (!empty($data['url']) && strpos($data['text'], $data['url'])) {
465 DI::profiler()->stopRecording();
466 return $data['text'] . $data['after'];
469 $text = $data['text'];
471 if (!empty($data['url']) && !empty($data['title'])) {
472 $text .= "\n[url=" . $data['url'] . ']' . $data['title'] . '[/url]';
473 } elseif (!empty($data['url'])) {
474 $text .= "\n[url]" . $data['url'] . '[/url]';
477 DI::profiler()->stopRecording();
478 return $text . "\n" . $data['after'];
482 * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
484 * @param array $match Array with the matching values
485 * @return string reformatted link including HTML codes
487 private static function convertUrlForActivityPubCallback(array $match): string
491 if (isset($match[2]) && ($match[1] != $match[2])) {
495 $parts = parse_url($url);
496 if (!isset($parts['scheme'])) {
500 return self::convertUrlForActivityPub($url);
504 * Converts [url] BBCodes in a format that looks fine on ActivityPub systems.
506 * @param string $url URL that is about to be reformatted
507 * @return string reformatted link including HTML codes
509 private static function convertUrlForActivityPub(string $url): string
511 return sprintf('<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>', $url, Strings::getStyledURL($url));
515 * [noparse][i]italic[/i][/noparse] turns into
516 * [noparse][ i ]italic[ /i ][/noparse],
517 * to hide them from parser.
519 * @param array $match
522 private static function escapeNoparseCallback(array $match): string
524 $whole_match = $match[0];
525 $captured = $match[1];
526 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
527 $new_str = str_replace($captured, $spacefied, $whole_match);
532 * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
533 * now turns back and the [noparse] tags are trimmed
534 * returning [i]italic[/i]
536 * @param array $match
539 private static function unescapeNoparseCallback(array $match): string
541 $captured = $match[1];
542 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
547 * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
550 * @param string $text Text to search
551 * @param string $name Tag name
552 * @param int $occurrences Number of first occurrences to skip
553 * @return boolean|array
555 public static function getTagPosition(string $text, string $name, int $occurrences = 0)
557 DI::profiler()->startRecording('rendering');
558 if ($occurrences < 0) {
563 for ($i = 0; $i <= $occurrences; $i++) {
564 if ($start_open !== false) {
565 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
569 if ($start_open === false) {
570 DI::profiler()->stopRecording();
574 $start_equal = strpos($text, '=', $start_open);
575 $start_close = strpos($text, ']', $start_open);
577 if ($start_close === false) {
578 DI::profiler()->stopRecording();
584 $end_open = strpos($text, '[/' . $name . ']', $start_close);
586 if ($end_open === false) {
587 DI::profiler()->stopRecording();
593 'open' => $start_open,
594 'close' => $start_close
598 'close' => $end_open + strlen('[/' . $name . ']')
602 if ($start_equal !== false) {
603 $res['start']['equal'] = $start_equal + 1;
606 DI::profiler()->stopRecording();
611 * Performs a preg_replace within the boundaries of all named BBCode tags in a text
613 * @param string $pattern Preg pattern string
614 * @param string $replace Preg replace string
615 * @param string $name BBCode tag name
616 * @param string $text Text to search
619 public static function pregReplaceInTag(string $pattern, string $replace, string $name, string $text): string
621 DI::profiler()->startRecording('rendering');
623 $pos = self::getTagPosition($text, $name, $occurrences);
624 while ($pos !== false && $occurrences++ < 1000) {
625 $start = substr($text, 0, $pos['start']['open']);
626 $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
627 $end = substr($text, $pos['end']['close']);
628 if ($end === false) {
632 $subject = preg_replace($pattern, $replace, $subject);
633 $text = $start . $subject . $end;
635 $pos = self::getTagPosition($text, $name, $occurrences);
638 DI::profiler()->stopRecording();
642 private static function extractImagesFromItemBody(string $body): array
649 $img_start = strpos($orig_body, '[img');
650 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
651 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
652 while (($img_st_close !== false) && ($img_end !== false)) {
653 $img_st_close++; // make it point to AFTER the closing bracket
654 $img_end += $img_start;
656 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
657 // This is an embedded image
658 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
659 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
663 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
666 $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
668 if ($orig_body === false) {
669 // in case the body ends on a closing image tag
673 $img_start = strpos($orig_body, '[img');
674 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
675 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
678 $new_body = $new_body . $orig_body;
680 return ['body' => $new_body, 'images' => $saved_image];
683 private static function interpolateSavedImagesIntoItemBody(int $uriid, string $body, array $images): string
688 foreach ($images as $image) {
689 // We're depending on the property of 'foreach' (specified on the PHP website) that
690 // it loops over the array starting from the first element and going sequentially
691 // to the last element
692 $newbody = str_replace(
693 '[$#saved_image' . $cnt . '#$]',
694 '<img src="' . self::proxyUrl($image, self::INTERNAL, $uriid) . '" alt="' . DI::l10n()->t('Image/photo') . '" />',
704 * @param string $text A BBCode string
705 * @return array Empty array if no share tag is present or the following array, missing attributes end up empty strings:
706 * - comment : Text before the opening share tag
707 * - shared : Text inside the share tags
708 * - author : (Optional) Display name of the shared author
709 * - profile : (Optional) Profile page URL of the shared author
710 * - avatar : (Optional) Profile picture URL of the shared author
711 * - link : (Optional) Canonical URL of the shared post
712 * - posted : (Optional) Date the shared post was initially posted ("Y-m-d H:i:s" in GMT)
713 * - message_id: (Optional) Shared post URI if any
714 * - guid : (Optional) Shared post GUID if any
716 public static function fetchShareAttributes(string $text): array
718 DI::profiler()->startRecording('rendering');
719 if (preg_match('~(.*?)\[share](.*)\[/share]~ism', $text, $matches)) {
720 DI::profiler()->stopRecording();
728 'message_id' => trim($matches[2]),
729 'comment' => trim($matches[1]),
733 // See Issue https://github.com/friendica/friendica/issues/10454
734 // Hashtags in usernames are expanded to links. This here is a quick fix.
735 $text = preg_replace('~([@!#])\[url=.*?](.*?)\[/url]~ism', '$1$2', $text);
737 if (!preg_match('~(.*?)\[share(.*?)](.*)\[/share]~ism', $text, $matches)) {
738 DI::profiler()->stopRecording();
742 $attributes = self::extractShareAttributes($matches[2]);
744 $attributes['comment'] = trim($matches[1]);
745 $attributes['shared'] = trim($matches[3]);
747 DI::profiler()->stopRecording();
752 * @see BBCode::fetchShareAttributes()
753 * @param string $shareString Internal opening share tag string matched by the regular expression
754 * @return array A fixed attribute array where missing attribute are represented by empty strings
756 private static function extractShareAttributes(string $shareString): array
759 foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid', 'message_id'] as $field) {
760 preg_match("/$field=(['\"])(.+?)\\1/ism", $shareString, $matches);
761 $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
768 * Remove the share block
770 * @param string $body
773 public static function removeSharedData(string $body): string
775 return trim(preg_replace("/\s*\[share.*?\].*?\[\/share\]\s*/ism", '', $body));
779 * This function converts a [share] block to text according to a provided callback function whose signature is:
781 * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
784 * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
786 * - $author_contact is a contact record array
787 * - $content is the inner content of the [share] block
788 * - $is_quote_share indicates whether there's any content before the [share] block
789 * - Return value is the string that should replace the [share] block in the provided text
791 * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
793 * @param string $text A BBCode string
794 * @param callable $callback
795 * @return string The BBCode string with all [share] blocks replaced
797 public static function convertShare(string $text, callable $callback, int $uriid = 0): string
799 DI::profiler()->startRecording('rendering');
800 $return = preg_replace_callback(
801 '~(.*?)\[share(.*?)](.*)\[/share]~ism',
802 function ($match) use ($callback, $uriid) {
803 $attributes = self::extractShareAttributes($match[2]);
805 $author_contact = Contact::getByURL($attributes['profile'], false, ['id', 'url', 'addr', 'name', 'micro']);
806 $author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
807 $author_contact['addr'] = ($author_contact['addr'] ?? '');
809 $attributes['author'] = ($author_contact['name'] ?? '') ?: $attributes['author'];
810 $attributes['avatar'] = ($author_contact['micro'] ?? '') ?: $attributes['avatar'];
811 $attributes['profile'] = ($author_contact['url'] ?? '') ?: $attributes['profile'];
813 if (!empty($author_contact['id'])) {
814 $attributes['avatar'] = Contact::getAvatarUrlForId($author_contact['id'], Proxy::SIZE_THUMB);
815 } elseif ($attributes['avatar']) {
816 $attributes['avatar'] = self::proxyUrl($attributes['avatar'], self::INTERNAL, $uriid, Proxy::SIZE_THUMB);
819 $content = preg_replace(Strings::autoLinkRegEx(), '<a href="$1">$1</a>', $match[3]);
821 return $match[1] . $callback($attributes, $author_contact, $content, trim($match[1]) != '');
826 DI::profiler()->stopRecording();
827 return trim($return);
831 * Convert complex IMG and ZMG elements
833 * @param [type] $text
834 * @param integer $simplehtml
835 * @param integer $uriid
838 private static function convertImages(string $text, int $simplehtml, int $uriid = 0): string
840 DI::profiler()->startRecording('rendering');
841 $return = preg_replace_callback(
842 "/\[[zi]mg(.*?)\]([^\[\]]*)\[\/[zi]mg\]/ism",
843 function ($match) use ($simplehtml, $uriid) {
844 $attribute_string = $match[1];
846 foreach (['alt', 'width', 'height'] as $field) {
847 preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
848 $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
851 $img_str = '<img src="' . self::proxyUrl($match[2], $simplehtml, $uriid) . '"';
852 foreach ($attributes as $key => $value) {
853 if (!empty($value)) {
854 $img_str .= ' ' . $key . '="' . htmlspecialchars($value, ENT_COMPAT) . '"';
857 return $img_str . '>';
862 DI::profiler()->stopRecording();
867 * Default [share] tag conversion callback
869 * Note: Can produce a [bookmark] tag in the output
871 * @see BBCode::convertShare()
872 * @param array $attributes [share] block attribute values
873 * @param array $author_contact Contact row of the shared author
874 * @param string $content Inner content of the [share] block
875 * @param boolean $is_quote_share Whether there is content before the [share] block
876 * @param integer $simplehtml Mysterious integer value depending on the target network/formatting style
878 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
880 private static function convertShareCallback(array $attributes, array $author_contact, string $content, bool $is_quote_share, int $simplehtml): string
882 DI::profiler()->startRecording('rendering');
883 $mention = $attributes['author'] . ' (' . ($author_contact['addr'] ?? '') . ')';
885 switch ($simplehtml) {
886 case self::MASTODON_API:
887 case self::TWITTER_API:
888 $text = ($is_quote_share ? '<br>' : '') .
889 '<b><a href="' . $attributes['link'] . '">' . html_entity_decode('♲', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . "</a>:</b><br>\n" .
890 '<blockquote class="shared_content" dir="auto">' . $content . '</blockquote>';
893 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
894 $text = ($is_quote_share ? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
896 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
898 if (!empty($attributes['posted']) && !empty($attributes['link'])) {
899 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
902 $text = ($is_quote_share ? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
904 if (empty($attributes['posted']) && !empty($attributes['link'])) {
905 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
910 case self::CONNECTORS:
911 $headline = '<p><b>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8');
912 $headline .= DI::l10n()->t('<a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
913 $headline .= ':</b></p>' . "\n";
915 $text = ($is_quote_share ? '<hr />' : '') . $headline . '<blockquote class="shared_content" dir="auto">' . trim($content) . '</blockquote>' . "\n";
919 $text = ($is_quote_share ? '<br>' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
921 case self::ACTIVITYPUB:
922 $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>';
923 $text = '<div><a href="' . $attributes['link'] . '">' . html_entity_decode('♲', ENT_QUOTES, 'UTF-8') . '</a> ' . $author . '<blockquote>' . $content . '</blockquote></div>' . "\n";
926 $text = ($is_quote_share ? "\n" : '');
928 $contact = Contact::getByURL($attributes['profile'], false, ['network']);
929 $network = $contact['network'] ?? Protocol::PHANTOM;
931 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
932 $text .= Renderer::replaceMacros($tpl, [
933 '$profile' => $attributes['profile'],
934 '$avatar' => $attributes['avatar'],
935 '$author' => $attributes['author'],
936 '$link' => $attributes['link'],
937 '$link_title' => DI::l10n()->t('Link to source'),
938 '$posted' => $attributes['posted'],
939 '$guid' => $attributes['guid'],
940 '$network_name' => ContactSelector::networkToName($network, $attributes['profile']),
941 '$network_icon' => ContactSelector::networkToIcon($network, $attributes['profile']),
942 '$content' => self::TOP_ANCHOR . self::setMentions(trim($content), 0, $network) . self::BOTTOM_ANCHOR,
950 private static function removePictureLinksCallback(array $match): string
952 $cache_key = 'remove:' . $match[1];
953 $text = DI::cache()->get($cache_key);
955 if (is_null($text)) {
956 $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
957 if ($curlResult->isSuccess()) {
958 $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
963 if (substr($mimetype, 0, 6) == 'image/') {
964 $text = '[url=' . $match[1] . ']' . $match[1] . '[/url]';
966 $text = '[url=' . $match[2] . ']' . $match[2] . '[/url]';
968 // if its not a picture then look if its a page that contains a picture link
969 $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
971 DI::cache()->set($cache_key, $text);
975 $doc = new DOMDocument();
976 @$doc->loadHTML($body);
977 $xpath = new DOMXPath($doc);
978 $list = $xpath->query('//meta[@name]');
979 foreach ($list as $node) {
982 if ($node->attributes->length) {
983 foreach ($node->attributes as $attribute) {
984 $attr[$attribute->name] = $attribute->value;
988 if (strtolower($attr['name']) == 'twitter:image') {
989 $text = '[url=' . $attr['content'] . ']' . $attr['content'] . '[/url]';
993 DI::cache()->set($cache_key, $text);
1000 * Callback: Expands links from given $match array
1002 * @param array $match Array with link match
1003 * @return string BBCode
1005 private static function expandLinksCallback(array $match): string
1007 if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1008 return ($match[1] . '[url]' . $match[2] . '[/url]');
1010 return ($match[1] . $match[3] . ' [url]' . $match[2] . '[/url]');
1015 * Callback: Cleans picture links
1017 * @param array $match Array with link match
1018 * @return string BBCode
1020 private static function cleanPictureLinksCallback(array $match): string
1022 // When the picture link is the own photo path then we can avoid fetching the link
1023 $own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()) . '/photos/');
1024 if (preg_match('|' . $own_photo_url . '.*?/image/|', Strings::normaliseLink($match[1]))) {
1025 if (!empty($match[3])) {
1026 $text = '[img=' . str_replace('-1.', '-0.', $match[2]) . ']' . $match[3] . '[/img]';
1028 $text = '[img]' . str_replace('-1.', '-0.', $match[2]) . '[/img]';
1033 $cache_key = 'clean:' . $match[1];
1034 $text = DI::cache()->get($cache_key);
1035 if (!is_null($text)) {
1039 $curlResult = DI::httpClient()->head($match[1], [HttpClientOptions::TIMEOUT => DI::config()->get('system', 'xrd_timeout')]);
1040 if ($curlResult->isSuccess()) {
1041 $mimetype = $curlResult->getHeader('Content-Type')[0] ?? '';
1046 // if its a link to a picture then embed this picture
1047 if (substr($mimetype, 0, 6) == 'image/') {
1048 $text = '[img]' . $match[1] . '[/img]';
1050 if (!empty($match[3])) {
1051 $text = '[img=' . $match[2] . ']' . $match[3] . '[/img]';
1053 $text = '[img]' . $match[2] . '[/img]';
1056 // if its not a picture then look if its a page that contains a picture link
1057 $body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
1059 DI::cache()->set($cache_key, $text);
1063 $doc = new DOMDocument();
1064 @$doc->loadHTML($body);
1065 $xpath = new DOMXPath($doc);
1066 $list = $xpath->query('//meta[@name]');
1067 foreach ($list as $node) {
1069 if ($node->attributes->length) {
1070 foreach ($node->attributes as $attribute) {
1071 $attr[$attribute->name] = $attribute->value;
1075 if (strtolower($attr['name']) == "twitter:image") {
1076 if (!empty($match[3])) {
1077 $text = "[img=" . $attr['content'] . "]" . $match[3] . "[/img]";
1079 $text = "[img]" . $attr['content'] . "[/img]";
1084 DI::cache()->set($cache_key, $text);
1090 * Cleans picture links
1092 * @param string $text HTML/BBCode string
1093 * @return string Cleaned HTML/BBCode
1095 public static function cleanPictureLinks(string $text): string
1097 DI::profiler()->startRecording('rendering');
1098 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", [self::class, 'cleanPictureLinksCallback'], $text);
1099 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", [self::class, 'cleanPictureLinksCallback'], $return);
1100 DI::profiler()->stopRecording();
1107 * @param string $text HTML/BBCode string
1108 * @return string Cleaned HTML/BBCode
1110 public static function removeLinks(string $bbcode): string
1112 DI::profiler()->startRecording('rendering');
1113 $bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
1114 $bbcode = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $bbcode);
1116 $bbcode = preg_replace('/[@!#]\[url\=.*?\].*?\[\/url\]/ism', '', $bbcode);
1117 $bbcode = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $bbcode);
1118 $bbcode = preg_replace('/[@!#]?\[url.*?\[\/url\]/ism', '', $bbcode);
1119 DI::profiler()->stopRecording();
1124 * Replace names in mentions with nicknames
1126 * @param string $body HTML/BBCode
1127 * @return string Body with replaced mentions
1129 public static function setMentionsToNicknames(string $body): string
1131 DI::profiler()->startRecording('rendering');
1132 $regexp = "/([@!])\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1133 $body = preg_replace_callback($regexp, [self::class, 'mentionCallback'], $body);
1134 DI::profiler()->stopRecording();
1139 * Callback function to replace a Friendica style mention in a mention with the nickname
1141 * @param array $match Matching values for the callback
1142 * @return string Replaced mention or empty string
1143 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1145 private static function mentionCallback(array $match): string
1147 if (empty($match[2])) {
1151 $data = Contact::getByURL($match[2], false, ['url', 'nick']);
1152 if (empty($data['nick'])) {
1156 return $match[1] . '[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
1160 * Converts a BBCode message for a given URI-ID to a HTML message
1162 * BBcode 2 HTML was written by WAY2WEB.net
1163 * extended to work with Mistpark/Friendica - Mike Macgirvin
1165 * Simple HTML values meaning:
1166 * - 0: Friendica display
1168 * - 2: Used for Windows Phone push, Friendica API
1169 * - 3: Used before converting to Markdown in bb2diaspora.php
1170 * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1173 * - 7: Used for dfrn, OStatus
1174 * - 8: Used for Twitter, WP backlink text setting
1178 * @param string $text
1179 * @param int $simple_html
1181 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1183 public static function convertForUriId(int $uriid = null, string $text = null, int $simple_html = self::INTERNAL): string
1185 $try_oembed = ($simple_html == self::INTERNAL);
1187 return self::convert($text ?? '', $try_oembed, $simple_html, false, $uriid ?? 0);
1191 * Converts a BBCode message to HTML message
1193 * BBcode 2 HTML was written by WAY2WEB.net
1194 * extended to work with Mistpark/Friendica - Mike Macgirvin
1196 * Simple HTML values meaning:
1197 * - 0: Friendica display
1199 * - 2: Used for Windows Phone push, Friendica API
1200 * - 3: Used before converting to Markdown in bb2diaspora.php
1201 * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1204 * - 7: Used for dfrn, OStatus
1205 * - 8: Used for Twitter, WP backlink text setting
1208 * @param string $text
1209 * @param bool $try_oembed
1210 * @param int $simple_html
1211 * @param bool $for_plaintext
1213 * @return string Converted code or empty string
1214 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1216 public static function convert(string $text = null, bool $try_oembed = true, int $simple_html = self::INTERNAL, bool $for_plaintext = false, int $uriid = 0): string
1218 // Accounting for null default column values
1219 if (is_null($text) || $text === '') {
1223 DI::profiler()->startRecording('rendering');
1225 Hook::callAll('bbcode', $text);
1229 $text = self::performWithEscapedTags($text, ['code'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1230 $text = self::performWithEscapedTags($text, ['noparse', 'nobb', 'pre'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a, $uriid) {
1232 * preg_match_callback function to replace potential Oembed tags with Oembed content
1234 * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1236 * $match[2] = $title or absent
1238 $try_oembed_callback = function (array $match) {
1240 $title = $match[2] ?? '';
1243 $return = OEmbed::getHTML($url, $title);
1244 } catch (Exception $ex) {
1245 $return = $match[0];
1251 // Remove the abstract element. It is a non visible element.
1252 $text = self::stripAbstract($text);
1254 // Line ending normalisation
1255 $text = str_replace("\r\n", "\n", $text);
1257 // Move new lines outside of tags
1258 $text = preg_replace("#\[(\w*)](\n*)#ism", '$2[$1]', $text);
1259 $text = preg_replace("#(\n*)\[/(\w*)]#ism", '[/$2]$1', $text);
1261 // Extract the private images which use data urls since preg has issues with
1262 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1263 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1265 $extracted = self::extractImagesFromItemBody($text);
1266 $text = $extracted['body'];
1267 $saved_image = $extracted['images'];
1269 // If we find any event code, turn it into an event.
1270 // After we're finished processing the bbcode we'll
1271 // replace all of the event code with a reformatted version.
1273 $ev = Event::fromBBCode($text);
1275 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1276 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1278 $text = str_replace("<", "<", $text);
1279 $text = str_replace(">", ">", $text);
1281 // remove some newlines before the general conversion
1282 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1]$2[/share]\n", $text);
1283 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "\n[quote$1]$2[/quote]\n", $text);
1285 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1287 $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1290 // Remove linefeeds inside of the table elements. See issue #6799
1292 "\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1293 "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1294 "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1295 "\n[hr]", "[hr]\n", " [hr]", "[hr] ",
1296 "\n[attachment ", " [attachment ", "\n[/attachment]", "[/attachment]\n", " [/attachment]", "[/attachment] ",
1297 "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] ",
1298 " \n", "\t\n", "[/li]\n", "\n[li]", "\n[*]",
1301 "[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1302 "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1303 "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1304 "[hr]", "[hr]", "[hr]", "[hr]",
1305 "[attachment ", "[attachment ", "[/attachment]", "[/attachment]", "[/attachment]", "[/attachment]",
1306 "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]",
1307 "\n", "\n", "[/li]", "[li]", "[*]",
1311 $text = str_replace($search, $replace, $text);
1312 } while ($oldtext != $text);
1314 // Replace these here only once
1315 $search = ["\n[table]", "[/table]\n"];
1316 $replace = ["[table]", "[/table]"];
1317 $text = str_replace($search, $replace, $text);
1319 // Trim new lines regardless of the system.remove_multiplicated_lines config value
1320 $text = trim($text, "\n");
1322 // removing multiplicated newlines
1323 if (DI::config()->get('system', 'remove_multiplicated_lines')) {
1325 "\n\n\n", "[/quote]\n\n", "\n[/quote]", "\n[ul]", "[/ul]\n", "\n[ol]", "[/ol]\n", "\n\n[share ", "[/attachment]\n",
1326 "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"
1329 "\n\n", "[/quote]\n", "[/quote]", "[ul]", "[/ul]", "[ol]", "[/ol]", "\n[share ", "[/attachment]",
1330 "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"
1334 $text = str_replace($search, $replace, $text);
1335 } while ($oldtext != $text);
1338 /// @todo Have a closer look at the different html modes
1339 // Handle attached links or videos
1340 if ($simple_html == self::NPF) {
1341 $text = self::removeAttachment($text);
1342 } elseif (in_array($simple_html, [self::MASTODON_API, self::TWITTER_API, self::ACTIVITYPUB])) {
1343 $text = self::replaceAttachment($text);
1344 } elseif (!in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::CONNECTORS])) {
1345 $text = self::replaceAttachment($text, true);
1347 $text = self::convertAttachment($text, $simple_html, $try_oembed, [], $uriid);
1350 $nosmile = strpos($text, '[nosmile]') !== false;
1351 $text = str_replace('[nosmile]', '', $text);
1353 // Replace non graphical smilies for external posts
1355 $text = self::performWithEscapedTags($text, ['img'], function ($text) use ($simple_html, $for_plaintext) {
1356 return Smilies::replace($text, ($simple_html != self::INTERNAL) || $for_plaintext);
1360 // leave open the possibility of [map=something]
1361 // this is replaced in Item::prepareBody() which has knowledge of the item location
1362 if (strpos($text, '[/map]') !== false) {
1363 $text = preg_replace_callback(
1364 "/\[map\](.*?)\[\/map\]/ism",
1365 function ($match) use ($simple_html) {
1366 return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1372 if (strpos($text, '[map=') !== false) {
1373 $text = preg_replace_callback(
1374 "/\[map=(.*?)\]/ism",
1375 function ($match) use ($simple_html) {
1376 return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1382 if (strpos($text, '[map]') !== false) {
1383 $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1386 // Check for headers
1388 if ($simple_html == self::INTERNAL) {
1389 //Ensure to always start with <h4> if possible
1391 for ($level = 6; $level > 0; $level--) {
1392 if (preg_match("(\[h$level\].*?\[\/h$level\])ism", $text)) {
1396 if ($heading_count > 0) {
1397 $heading = min($heading_count + 3, 6);
1398 for ($level = 6; $level > 0; $level--) {
1399 if (preg_match("(\[h$level\].*?\[\/h$level\])ism", $text)) {
1400 $text = preg_replace("(\[h$level\](.*?)\[\/h$level\])ism", "</p><h$heading>$1</h$heading><p>", $text);
1406 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '</p><h1>$1</h1><p>', $text);
1407 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '</p><h2>$1</h2><p>', $text);
1408 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '</p><h3>$1</h3><p>', $text);
1409 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '</p><h4>$1</h4><p>', $text);
1410 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '</p><h5>$1</h5><p>', $text);
1411 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '</p><h6>$1</h6><p>', $text);
1414 // Check for paragraph
1415 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1417 // Check for bold text
1418 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1420 // Check for Italics text
1421 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1423 // Check for Underline text
1424 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1426 // Check for strike-through text
1427 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1429 // Check for over-line text
1430 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1432 // Check for colored text
1433 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1435 // Check for sized text
1436 // [size=50] --> font-size: 50px (with the unit).
1437 if ($simple_html != self::DIASPORA) {
1438 $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1px;line-height:normal;">$2</span>', $text);
1439 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1;line-height:normal;">$2</span>', $text);
1441 // Issue 2199: Diaspora doesn't interpret the construct above, nor the <small> or <big> element
1442 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "$2", $text);
1446 // Check for centered text
1447 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", '<div style="text-align:center;">$1</div>', $text);
1449 // Check for list text
1450 $text = str_replace("[*]", "<li>", $text);
1452 // Check for block-level custom CSS
1453 $text = preg_replace('#(?<=^|\n)\[style=(.*?)](.*?)\[/style](?:\n|$)#ism', '<div style="$1">$2</div>', $text);
1455 // Check for inline custom CSS
1456 $text = preg_replace("(\[style=(.*?)\](.*?)\[\/style\])ism", '<span style="$1">$2</span>', $text);
1458 // Mastodon Emoji (internal tag, do not document for users)
1459 $text = preg_replace("(\[emoji=(.*?)](.*?)\[/emoji])ism", '<span class="mastodon emoji"><img src="$1" alt="$2" title="$2"/></span>', $text);
1461 // Check for CSS classes
1462 // @deprecated since 2021.12, left for backward-compatibility reasons
1463 $text = preg_replace("(\[class=(.*?)\](.*?)\[\/class\])ism", '<span class="$1">$2</span>', $text);
1464 // Add HTML new lines
1465 $text = str_replace("\n\n", '</p><p>', $text);
1466 $text = str_replace("\n", '<br>', $text);
1468 // handle nested lists
1471 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1472 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1473 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1474 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1475 $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '</p><ul class="listbullet" style="list-style-type: circle;">$1</ul><p>', $text);
1476 $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '</p><ul class="listnone" style="list-style-type: none;">$1</ul><p>', $text);
1477 $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '</p><ul class="listdecimal" style="list-style-type: decimal;">$1</ul><p>', $text);
1478 $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '</p><ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul><p>', $text);
1479 $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '</p><ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul><p>', $text);
1480 $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '</p><ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul><p>', $text);
1481 $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '</p><ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul><p>', $text);
1482 $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '</p><ul>$1</ul><p>', $text);
1483 $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '</p><ol>$1</ol><p>', $text);
1484 $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1487 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1488 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1489 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1490 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '</p><table>$1</table><p>', $text);
1492 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '</p><table border="1" >$1</table><p>', $text);
1493 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '</p><table border="0" >$1</table><p>', $text);
1495 $text = str_replace('[hr]', '</p><hr /><p>', $text);
1497 if (!$for_plaintext) {
1498 $text = self::performWithEscapedTags($text, ['url', 'img', 'audio', 'video', 'youtube', 'vimeo', 'share', 'attachment', 'iframe', 'bookmark'], function ($text) {
1499 return preg_replace(Strings::autoLinkRegEx(), '[url]$1[/url]', $text);
1503 // Check for font change text
1504 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1506 // Declare the format for [spoiler] layout
1507 $SpoilerLayout = '<details class="spoiler"><summary>' . DI::l10n()->t('Click to open/close') . '</summary>$1</details>';
1509 // Check for [spoiler] text
1510 // handle nested quotes
1512 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1513 $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", $SpoilerLayout, $text);
1516 // Check for [spoiler=Title] text
1518 // handle nested quotes
1520 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1521 $text = preg_replace(
1522 "/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1523 '<details class="spoiler"><summary>$1</summary>$2</details>',
1528 // Declare the format for [quote] layout
1529 $QuoteLayout = '</p><blockquote>$1</blockquote><p>';
1531 // Check for [quote] text
1532 // handle nested quotes
1534 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1535 $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1538 // Check for [quote=Author] text
1540 $t_wrote = DI::l10n()->t('$1 wrote:');
1542 // handle nested quotes
1544 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1545 $text = preg_replace(
1546 "/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1547 "<p><strong class=" . '"author"' . ">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1553 // [img=widthxheight]image source[/img]
1554 $text = preg_replace_callback(
1555 "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1556 function ($matches) use ($simple_html, $uriid) {
1557 if (strpos($matches[3], "data:image/") === 0) {
1561 $matches[3] = self::proxyUrl($matches[3], $simple_html, $uriid);
1562 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1567 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1568 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1570 $text = preg_replace_callback(
1571 "/\[[iz]mg\=(.*?)\](.*?)\[\/[iz]mg\]/ism",
1572 function ($matches) use ($simple_html, $uriid) {
1573 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1574 $alt = htmlspecialchars($matches[2], ENT_COMPAT);
1575 // Fix for Markdown problems with Diaspora, see issue #12701
1576 if (($simple_html != self::DIASPORA) || strpos($matches[2], '"') === false) {
1577 return '<img src="' . $matches[1] . '" alt="' . $alt . '" title="' . $alt . '">';
1579 return '<img src="' . $matches[1] . '" alt="' . $alt . '">';
1586 // [img]pathtoimage[/img]
1587 $text = preg_replace_callback(
1588 "/\[[iz]mg\](.*?)\[\/[iz]mg\]/ism",
1589 function ($matches) use ($simple_html, $uriid) {
1590 if (strpos($matches[1], "data:image/") === 0) {
1594 $matches[1] = self::proxyUrl($matches[1], $simple_html, $uriid);
1595 return "[img]" . $matches[1] . "[/img]";
1600 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1601 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1603 $text = self::convertImages($text, $simple_html, $uriid);
1605 $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);
1606 $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>', $text);
1607 //$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);
1609 // Simplify "video" element
1610 $text = preg_replace('(\[video[^\]]*?\ssrc\s?=\s?([^\s\]]+)[^\]]*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
1612 if ($simple_html == self::NPF) {
1613 $text = preg_replace(
1614 "/\[video\](.*?)\[\/video\]/ism",
1615 '</p><video src="$1" controls width="100%" height="auto">$1</video><p>',
1618 $text = preg_replace(
1619 "/\[audio\](.*?)\[\/audio\]/ism",
1620 '</p><audio src="$1" controls>$1">$1</audio><p>',
1623 } elseif ($try_oembed) {
1624 // html5 video and audio
1625 $text = preg_replace(
1626 "/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism",
1627 '<video src="$1" controls width="100%" height="auto"><a href="$1">$1</a></video>',
1631 $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1632 $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1634 $text = preg_replace(
1635 "/\[video\](.*?)\[\/video\]/ism",
1636 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>',
1639 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism", '<audio src="$1" controls><a href="$1">$1</a></audio>', $text);
1641 $text = preg_replace(
1642 "/\[video\](.*?)\[\/video\]/ism",
1643 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>',
1646 $text = preg_replace(
1647 "/\[audio\](.*?)\[\/audio\]/ism",
1648 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>',
1653 // Backward compatibility, [iframe] support has been removed in version 2020.12
1654 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1656 // Youtube extensions
1657 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1658 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1659 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/shorts\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1660 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1663 $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);
1665 $text = preg_replace(
1666 "/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1667 '<a href="https://www.youtube.com/watch?v=$1" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=$1</a>',
1672 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1673 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1676 $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);
1678 $text = preg_replace(
1679 "/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1680 '<a href="https://vimeo.com/$1" target="_blank" rel="noopener noreferrer">https://vimeo.com/$1</a>',
1686 $text = OEmbed::BBCode2HTML($text);
1688 // Avoid triple linefeeds through oembed
1689 $text = str_replace("<br style='clear:left'></span><br><br>", "<br style='clear:left'></span><br>", $text);
1691 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1692 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1693 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1694 // start which is always required). Allow desc with a missing summary for compatibility.
1696 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1697 $sub = Event::getHTML($ev, $simple_html, $uriid);
1699 $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1700 $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1701 $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1702 $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1703 $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1704 $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1707 if (!$for_plaintext && DI::config()->get('system', 'big_emojis') && ($simple_html != self::DIASPORA)) {
1708 $conv = html_entity_decode(str_replace([' ', "\n", "\r"], '', $text));
1709 // Emojis are always 4 byte Unicode characters
1710 if (!empty($conv) && (strlen($conv) / mb_strlen($conv) == 4)) {
1711 $text = '<span style="font-size: xx-large; line-height: normal;">' . $text . '</span>';
1715 // Handle mentions and hashtag links
1716 if ($simple_html == self::DIASPORA) {
1717 // The ! is converted to @ since Diaspora only understands the @
1718 $text = preg_replace(
1719 "/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1720 '@<a href="$2">$3</a>',
1723 } elseif (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1724 $text = preg_replace(
1725 "/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1726 '<span class="h-card"><a href="$2" class="u-url mention">$1<span>$3</span></a></span>',
1729 $text = preg_replace(
1730 "/([#])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1731 '<a href="$2" class="mention hashtag" rel="tag">$1<span>$3</span></a>',
1734 } elseif (in_array($simple_html, [self::INTERNAL, self::EXTERNAL, self::TWITTER_API])) {
1735 $text = preg_replace(
1736 "/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1737 '<bdi>$1<a href="$2" class="userinfo mention" title="$3">$3</a></bdi>',
1740 } elseif ($simple_html == self::MASTODON_API) {
1741 $text = preg_replace(
1742 "/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1743 '<a class="u-url mention status-link" href="$2" rel="nofollow noopener noreferrer" target="_blank" title="$3">$1<span>$3</span></a>',
1746 $text = preg_replace(
1747 "/([#])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1748 '<a class="mention hashtag status-link" href="$2" rel="tag">$1<span>$3</span></a>',
1752 $text = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $text);
1755 if (!$for_plaintext) {
1756 if (in_array($simple_html, [self::OSTATUS, self::MASTODON_API, self::TWITTER_API, self::ACTIVITYPUB])) {
1757 $text = preg_replace_callback("/\[url\](.*?)\[\/url\]/ism", [self::class, 'convertUrlForActivityPubCallback'], $text);
1758 $text = preg_replace_callback("/\[url\=(.*?)\](.*?)\[\/url\]/ism", [self::class, 'convertUrlForActivityPubCallback'], $text);
1761 $text = preg_replace("(\[url\](.*?)\[\/url\])ism", " $1 ", $text);
1762 $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", [self::class, 'removePictureLinksCallback'], $text);
1765 // Bookmarks in red - will be converted to bookmarks in friendica
1766 $text = preg_replace("/#\^\[url\](.*?)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1767 $text = preg_replace("/#\^\[url\=(.*?)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1768 $text = preg_replace(
1769 "/#\[url\=.*?\]\^\[\/url\]\[url\=(.*?)\](.*?)\[\/url\]/i",
1770 "[bookmark=$1]$2[/bookmark]",
1774 if (in_array($simple_html, [self::OSTATUS, self::TWITTER])) {
1775 $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", [self::class, 'expandLinksCallback'], $text);
1776 //$text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $text);
1777 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]', $text);
1780 // Perform URL Search
1782 $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1785 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1787 // Handle Diaspora posts
1788 $text = preg_replace_callback(
1789 "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1791 return "[url=" . DI::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
1796 $text = preg_replace_callback(
1797 "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
1799 return "[url=" . DI::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
1804 // Server independent link to posts and comments
1805 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
1806 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1807 $text = preg_replace($expression, DI::baseUrl() . "/display/$1", $text);
1811 * - #[url=<anything>]<term>[/url]
1812 * - [url=<anything>]#<term>[/url]
1814 self::performWithEscapedTags($text, ['url', 'share'], function ($text) use ($simple_html) {
1815 $text = preg_replace_callback("/(?:#\[url\=[^\[\]]*\]|\[url\=[^\[\]]*\]#)(.*?)\[\/url\]/ism", function ($matches) use ($simple_html) {
1816 if ($simple_html == self::ACTIVITYPUB) {
1817 return '<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1818 . '" data-tag="' . XML::escape($matches[1]) . '" rel="tag ugc">#'
1819 . XML::escape($matches[1]) . '</a>';
1821 return '#<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1822 . '" class="tag" rel="tag" title="' . XML::escape($matches[1]) . '">'
1823 . XML::escape($matches[1]) . '</a>';
1829 // We need no target="_blank" rel="noopener noreferrer" for local links
1830 // convert links start with DI::baseUrl() as local link without the target="_blank" rel="noopener noreferrer" attribute
1831 $escapedBaseUrl = preg_quote(DI::baseUrl(), '/');
1832 $text = preg_replace("/\[url\](" . $escapedBaseUrl . ".*?)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
1833 $text = preg_replace("/\[url\=(" . $escapedBaseUrl . ".*?)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
1835 $text = preg_replace("/\[url\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1836 $text = preg_replace("/\[url\=(.*?)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
1838 // Red compatibility, though the link can't be authenticated on Friendica
1839 $text = preg_replace("/\[zrl\=(.*?)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
1842 // we may need to restrict this further if it picks up too many strays
1843 // link acct:user@host to a webfinger profile redirector
1845 $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);
1847 // Perform MAIL Search
1848 $text = preg_replace("/\[mail\](.*?)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
1849 $text = preg_replace("/\[mail\=(.*?)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
1851 /// @todo What is the meaning of these lines?
1852 $text = preg_replace('/\[\&\;([#a-z0-9]+)\;\]/', '&$1;', $text);
1853 $text = preg_replace('/\&\#039\;/', '\'', $text);
1855 // Currently deactivated, it made problems with " inside of alt texts.
1856 //$text = preg_replace('/\"\;/', '"', $text);
1858 // fix any escaped ampersands that may have been converted into links
1859 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
1861 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
1862 $allowed_src_protocols = ['//', 'http://', 'https://', 'contact/redir/', 'cid:'];
1864 array_walk($allowed_src_protocols, function (&$value) {
1865 $value = preg_quote($value, '#');
1868 $text = preg_replace(
1869 '#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
1870 '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . DI::l10n()->t('Invalid source protocol') . '">',
1874 // sanitize href attributes (only allowlisted protocols URLs)
1875 // default value for backward compatibility
1876 $allowed_link_protocols = DI::config()->get('system', 'allowed_link_protocols', []);
1878 // Always allowed protocol even if config isn't set or not including it
1879 $allowed_link_protocols[] = '//';
1880 $allowed_link_protocols[] = 'http://';
1881 $allowed_link_protocols[] = 'https://';
1882 $allowed_link_protocols[] = 'contact/redir/';
1884 array_walk($allowed_link_protocols, function (&$value) {
1885 $value = preg_quote($value, '#');
1888 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
1889 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . DI::l10n()->t('Invalid link protocol') . '">', $text);
1892 $text = self::convertShare(
1894 function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
1895 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
1900 $text = self::interpolateSavedImagesIntoItemBody($uriid, $text, $saved_image);
1903 }); // Escaped noparse, nobb, pre
1905 // Remove escaping tags and replace new lines that remain
1906 $text = preg_replace_callback('/\[(noparse|nobb)](.*?)\[\/\1]/ism', function ($match) {
1907 return str_replace("\n", "<br>", $match[2]);
1910 // Additionally, [pre] tags preserve spaces
1911 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", function ($match) {
1912 return str_replace([' ', "\n"], [' ', "<br>"], htmlentities($match[1], ENT_NOQUOTES, 'UTF-8'));
1918 $text = preg_replace_callback(
1919 "#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
1920 function ($matches) {
1921 if (strpos($matches[2], "\n") !== false) {
1922 $return = '<pre><code class="language-' . trim($matches[1]) . '">' . htmlentities(trim($matches[2], "\n\r"), ENT_NOQUOTES, 'UTF-8') . '</code></pre>';
1924 $return = '<code>' . htmlentities($matches[2], ENT_NOQUOTES, 'UTF-8') . '</code>';
1932 // Default iframe allowed domains/path
1933 $allowedIframeDomains = [
1934 DI::baseUrl()->getHost()
1935 . (DI::baseUrl()->getPath() ? '/' . DI::baseUrl()->getPath() : '')
1936 . '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
1937 'www.youtube.com/embed/',
1938 'player.vimeo.com/video/',
1941 $allowedIframeDomains = array_merge(
1942 $allowedIframeDomains,
1943 DI::config()->get('system', 'allowed_oembed') ?
1944 explode(',', DI::config()->get('system', 'allowed_oembed'))
1948 if (strpos($text, '<p>') !== false || strpos($text, '</p>') !== false) {
1949 $text = '<p>' . $text . '</p>';
1952 $text = HTML::purify($text, $allowedIframeDomains);
1953 DI::profiler()->stopRecording();
1959 * Strips the "abstract" tag from the provided text
1961 * @param string $text The text with BBCode
1962 * @return string The same text - but without "abstract" element
1964 public static function stripAbstract(string $text): string
1966 DI::profiler()->startRecording('rendering');
1968 $text = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) {
1969 $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", ' ', $text);
1970 $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", ' ', $text);
1974 DI::profiler()->stopRecording();
1979 * Returns the value of the "abstract" element
1981 * @param string $text The text that maybe contains the element
1982 * @param string $addon The addon for which the abstract is meant for
1983 * @return string The abstract
1985 public static function getAbstract(string $text, string $addon = ''): string
1987 DI::profiler()->startRecording('rendering');
1988 $addon = strtolower($addon);
1990 $abstract = BBCode::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) use ($addon) {
1991 if ($addon && preg_match('#\[abstract=' . preg_quote($addon, '#') . '](.*?)\[/abstract]#ism', $text, $matches)) {
1995 if (preg_match("#\[abstract](.*?)\[/abstract]#ism", $text, $matches)) {
2002 DI::profiler()->stopRecording();
2007 * Callback function to replace a Friendica style mention in a mention for Diaspora
2009 * @param array $match Matching values for the callback
2010 * [1] = Mention type (! or @)
2013 * @return string Replaced mention
2014 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2015 * @throws \ImagickException
2017 private static function bbCodeMention2DiasporaCallback(array $match): string
2019 $contact = Contact::getByURL($match[3], false, ['addr']);
2020 if (empty($contact['addr'])) {
2024 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
2029 * Converts a BBCode text into Markdown
2031 * This function converts a BBCode item body to be sent to Markdown-enabled
2032 * systems like Diaspora and Libertree
2034 * @param string $text
2035 * @param bool $for_diaspora Diaspora requires more changes than Libertree
2037 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2039 public static function toMarkdown(string $text, bool $for_diaspora = true): string
2041 DI::profiler()->startRecording('rendering');
2042 $original_text = $text;
2044 // Since Diaspora is creating a summary for links, this function removes them before posting
2045 if ($for_diaspora) {
2046 $text = self::removeShareInformation($text);
2050 * Transform #tags, strip off the [url] and replace spaces with underscore
2052 $url_search_string = "^\[\]";
2053 $text = preg_replace_callback(
2054 "/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
2055 function ($matches) {
2056 return '#' . str_replace(' ', '_', $matches[2]);
2061 // Converting images with size parameters to simple images. Markdown doesn't know it.
2062 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
2064 // Convert it to HTML - don't try oembed
2065 if ($for_diaspora) {
2066 $text = self::convert($text, false, self::DIASPORA);
2068 // Add all tags that maybe were removed
2069 if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
2071 foreach ($tags[2] as $tag) {
2072 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
2073 if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
2074 $tagline .= '#' . $tag . ' ';
2077 $text = $text . ' ' . $tagline;
2080 $text = self::convert($text, false, self::CONNECTORS);
2083 // If a link is followed by a quote then there should be a newline before it
2084 // Maybe we should make this newline at every time before a quote.
2085 $text = str_replace(['</a><blockquote>'], ['</a><br><blockquote>'], $text);
2087 // Now convert HTML to Markdown
2088 $text = HTML::toMarkdown($text);
2090 // Libertree has a problem with escaped hashtags.
2091 $text = str_replace(['\#'], ['#'], $text);
2093 // Remove any leading or trailing whitespace, as this will mess up
2094 // the Diaspora signature verification and cause the item to disappear
2095 $text = trim($text);
2097 if ($for_diaspora) {
2098 $url_search_string = "^\[\]";
2099 $text = preg_replace_callback(
2100 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
2101 [self::class, 'bbCodeMention2DiasporaCallback'],
2106 Hook::callAll('bb2diaspora', $text);
2108 DI::profiler()->stopRecording();
2113 * Pull out all #hashtags and @person tags from $string.
2115 * We also get @person@domain.com - which would make
2116 * the regex quite complicated as tags can also
2117 * end a sentence. So we'll run through our results
2118 * and strip the period from any tags which end with one.
2119 * Returns array of tags found, or empty array.
2121 * @param string $string Post content
2122 * @return array List of tag and person names
2124 public static function getTags(string $string): array
2126 DI::profiler()->startRecording('rendering');
2129 self::performWithEscapedTags($string, ['noparse', 'pre', 'code', 'img', 'attachment'], function ($string) use (&$ret) {
2130 // Convert hashtag links to hashtags
2131 $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
2133 // Force line feeds at bbtags
2134 $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
2136 // ignore anything in a bbtag
2137 $string = preg_replace('/\[(.*?)\]/sm', '', $string);
2139 // Match full names against @tags including the space between first and last
2140 // We will look these up afterward to see if they are full names or not recognisable.
2142 if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
2143 foreach ($matches[1] as $match) {
2144 if (strstr($match, ']')) {
2145 // we might be inside a bbcode color tag - leave it alone
2149 if (substr($match, -1, 1) === '.') {
2150 $ret[] = substr($match, 0, -1);
2157 // Otherwise pull out single word tags. These can be @nickname, @first_last
2160 if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
2161 foreach ($matches[1] as $match) {
2162 if (strstr($match, ']')) {
2163 // we might be inside a bbcode color tag - leave it alone
2167 // try not to catch url fragments
2168 if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
2177 DI::profiler()->stopRecording();
2178 return array_unique($ret);
2182 * Expand tags to URLs, checks the tag is at the start of a line or preceded by a non-word character
2184 * @param string $body HTML/BBCode
2185 * @return string body with expanded tags
2187 public static function expandTags(string $body): string
2189 return preg_replace_callback(
2190 "/(?<=\W|^)([!#@])([^\^ \x0D\x0A,;:?'\"]*[^\^ \x0D\x0A,;:?!'\".])/",
2191 function (array $match) {
2192 switch ($match[1]) {
2195 $contact = Contact::getByURL($match[2]);
2196 if (!empty($contact)) {
2197 return $match[1] . '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2199 return $match[1] . $match[2];
2205 return $match[1] . '[url=' . DI::baseUrl() . '/search?tag=' . $match[2] . ']' . $match[2] . '[/url]';
2213 * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
2215 * @param string $text HTML/BBCode
2216 * @param array $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
2217 * @param callable $callback
2219 * @see Strings::performWithEscapedBlocks
2221 public static function performWithEscapedTags(string $text, array $tagList, callable $callback): string
2223 $tagList = array_map('preg_quote', $tagList);
2225 return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
2229 * Replaces mentions in the provided message body in BBCode links for the provided user and network if any
2231 * @param string $body HTML/BBCode
2232 * @param int $profile_uid Profile user id
2233 * @param string $network Network name
2234 * @return string HTML/BBCode with inserted images
2235 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2236 * @throws \ImagickException
2238 public static function setMentions(string $body, $profile_uid = 0, $network = '')
2240 DI::profiler()->startRecording('rendering');
2241 $body = self::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
2242 $tags = self::getTags($body);
2246 foreach ($tags as $tag) {
2247 $tag_type = substr($tag, 0, 1);
2249 if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
2254 * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
2255 * Robert Johnson should be first in the $tags array
2257 foreach ($tagged as $nextTag) {
2258 if (stristr($nextTag, $tag . ' ')) {
2263 if (($success = Item::replaceTag($body, $profile_uid, $tag, $network)) && $success['replaced']) {
2271 DI::profiler()->stopRecording();
2276 * @param string $author Author display name
2277 * @param string $profile Author profile URL
2278 * @param string $avatar Author profile picture URL
2279 * @param string $link Post source URL
2280 * @param string $posted Post created date
2281 * @param string|null $guid Post guid (if any)
2282 * @param string|null $uri Post uri (if any)
2284 * @TODO Rewrite to handle over whole record array
2286 public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null, string $uri = null): string
2288 DI::profiler()->startRecording('rendering');
2289 $header = "[share author='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $author) .
2290 "' profile='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $profile) .
2291 "' avatar='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $avatar) .
2292 "' link='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $link) .
2293 "' posted='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $posted);
2296 $header .= "' guid='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $guid);
2300 $header .= "' message_id='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $uri);
2305 DI::profiler()->stopRecording();
2310 * Returns the BBCode relevant to embed the provided URL in a post body.
2311 * For media type, it will return [img], [video] and [audio] tags.
2312 * For regular web pages, it will either output a [bookmark] tag if title and description were provided,
2313 * an [attachment] tag or a simple [url] tag depending on $tryAttachment.
2315 * @param string $url
2316 * @param bool $tryAttachment
2317 * @param string|null $title
2318 * @param string|null $description
2319 * @param string|null $tags
2321 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2322 * @see ParseUrl::getSiteinfoCached
2324 public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
2326 DI::profiler()->startRecording('rendering');
2327 DI::logger()->info($url);
2329 // If there is already some content information submitted we don't
2330 // need to parse the url for content.
2331 if (!empty($title) && !empty($description)) {
2332 $title = str_replace(["\r", "\n"], ['', ''], $title);
2334 $description = '[quote]' . trim($description) . '[/quote]' . "\n";
2337 if (!empty($tags)) {
2338 $arr_tags = ParseUrl::convertTagsToArray($tags);
2339 if (count($arr_tags)) {
2340 $str_tags = "\n" . implode(' ', $arr_tags) . "\n";
2344 $result = sprintf('[bookmark=%s]%s[/bookmark]%s', $url, ($title) ? $title : $url, $description) . $str_tags;
2346 DI::logger()->info('(unparsed): returns: ' . $result);
2348 DI::profiler()->stopRecording();
2352 $siteinfo = ParseUrl::getSiteinfoCached($url);
2354 if (in_array($siteinfo['type'], ['image', 'video', 'audio'])) {
2355 switch ($siteinfo['type']) {
2357 $bbcode = "\n" . '[video]' . $url . '[/video]' . "\n";
2360 $bbcode = "\n" . '[audio]' . $url . '[/audio]' . "\n";
2363 $bbcode = "\n" . '[img]' . $url . '[/img]' . "\n";
2367 DI::profiler()->stopRecording();
2371 unset($siteinfo['keywords']);
2373 // Bypass attachment if parse url for a comment
2374 if (!$tryAttachment) {
2375 DI::profiler()->stopRecording();
2376 return "\n" . '[url=' . $url . ']' . ($siteinfo['title'] ?? $url) . '[/url]';
2379 // Format it as BBCode attachment
2380 $bbcode = "\n" . PageInfo::getFooterFromData($siteinfo);
2381 DI::profiler()->stopRecording();