3 * @copyright Copyright (C) 2020, Friendica
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\Smilies;
31 use Friendica\Core\Hook;
32 use Friendica\Core\Logger;
33 use Friendica\Core\Protocol;
34 use Friendica\Core\Renderer;
35 use Friendica\Core\System;
37 use Friendica\Model\Contact;
38 use Friendica\Model\Event;
39 use Friendica\Model\Photo;
40 use Friendica\Model\Tag;
41 use Friendica\Object\Image;
42 use Friendica\Protocol\Activity;
43 use Friendica\Util\Images;
44 use Friendica\Util\Map;
45 use Friendica\Util\ParseUrl;
46 use Friendica\Util\Proxy as ProxyUtils;
47 use Friendica\Util\Strings;
48 use Friendica\Util\XML;
59 const ACTIVITYPUB = 9;
62 * Fetches attachment data that were generated the old way
64 * @param string $body Message body
66 * 'type' -> Message type ('link', 'video', 'photo')
67 * 'text' -> Text before the shared message
68 * 'after' -> Text after the shared message
69 * 'image' -> Preview image of the message
70 * 'url' -> Url to the attached message
71 * 'title' -> Title of the attachment
72 * 'description' -> Description of the attachment
73 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
75 private static function getOldAttachmentData($body)
79 // Simplify image codes
80 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
82 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
83 foreach ($attached as $data) {
84 if (!in_array($data[1], ['type-link', 'type-video', 'type-photo'])) {
88 $post['type'] = substr($data[1], 5);
90 $pos = strpos($body, $data[0]);
92 $post['text'] = trim(substr($body, 0, $pos));
93 $post['after'] = trim(substr($body, $pos + strlen($data[0])));
95 $post['text'] = trim(str_replace($data[0], '', $body));
99 $attacheddata = $data[2];
101 if (preg_match("/\[img\](.*?)\[\/img\]/ism", $attacheddata, $matches)) {
103 $picturedata = Images::getInfoFromURLCached($matches[1]);
106 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
107 $post['image'] = $matches[1];
109 $post['preview'] = $matches[1];
114 if (preg_match("/\[bookmark\=(.*?)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
115 $post['url'] = $matches[1];
116 $post['title'] = $matches[2];
118 if (!empty($post['url']) && (in_array($post['type'], ['link', 'video']))
119 && preg_match("/\[url\=(.*?)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
120 $post['url'] = $matches[1];
123 // Search for description
124 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
125 $post['description'] = $matches[1];
133 * Fetches attachment data that were generated with the "attachment" element
135 * @param string $body Message body
137 * 'type' -> Message type ('link', 'video', 'photo')
138 * 'text' -> Text before the shared message
139 * 'after' -> Text after the shared message
140 * 'image' -> Preview image of the message
141 * 'url' -> Url to the attached message
142 * 'title' -> Title of the attachment
143 * 'description' -> Description of the attachment
144 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
146 public static function getAttachmentData($body)
158 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
159 return self::getOldAttachmentData($body);
162 $attributes = $match[2];
164 $data['text'] = trim($match[1]);
167 preg_match("/type='(.*?)'/ism", $attributes, $matches);
168 if (!empty($matches[1])) {
169 $type = strtolower($matches[1]);
172 preg_match('/type="(.*?)"/ism', $attributes, $matches);
173 if (!empty($matches[1])) {
174 $type = strtolower($matches[1]);
181 if (!in_array($type, ['link', 'audio', 'photo', 'video'])) {
186 $data['type'] = $type;
190 preg_match("/url='(.*?)'/ism", $attributes, $matches);
191 if (!empty($matches[1])) {
195 preg_match('/url="(.*?)"/ism', $attributes, $matches);
196 if (!empty($matches[1])) {
201 $data['url'] = html_entity_decode($url, ENT_QUOTES, 'UTF-8');
205 preg_match("/title='(.*?)'/ism", $attributes, $matches);
206 if (!empty($matches[1])) {
207 $title = $matches[1];
210 preg_match('/title="(.*?)"/ism', $attributes, $matches);
211 if (!empty($matches[1])) {
212 $title = $matches[1];
216 $title = self::convert(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, true);
217 $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
218 $title = str_replace(['[', ']'], ['[', ']'], $title);
219 $data['title'] = $title;
223 preg_match("/image='(.*?)'/ism", $attributes, $matches);
224 if (!empty($matches[1])) {
225 $image = $matches[1];
228 preg_match('/image="(.*?)"/ism', $attributes, $matches);
229 if (!empty($matches[1])) {
230 $image = $matches[1];
234 $data['image'] = html_entity_decode($image, ENT_QUOTES, 'UTF-8');
238 preg_match("/preview='(.*?)'/ism", $attributes, $matches);
239 if (!empty($matches[1])) {
240 $preview = $matches[1];
243 preg_match('/preview="(.*?)"/ism', $attributes, $matches);
244 if (!empty($matches[1])) {
245 $preview = $matches[1];
248 if ($preview != '') {
249 $data['preview'] = html_entity_decode($preview, ENT_QUOTES, 'UTF-8');
252 $data['description'] = trim($match[3]);
254 $data['after'] = trim($match[4]);
259 public static function getAttachedData($body, $item = [])
263 - type: link, video, photo
271 $has_title = !empty($item['title']);
272 $plink = $item['plink'] ?? '';
273 $post = self::getAttachmentData($body);
275 // Get all linked images with alternative image description
276 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
277 foreach ($pictures as $picture) {
278 if (Photo::isLocal($picture[1])) {
279 $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => $picture[2]];
282 if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
283 $post['image_description'] = $post['images'][0]['description'];
287 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
288 foreach ($pictures as $picture) {
289 if (Photo::isLocal($picture[1])) {
290 $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => ''];
295 // if nothing is found, it maybe having an image.
296 if (!isset($post['type'])) {
297 // Simplify image codes
298 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
299 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
300 $post['text'] = $body;
302 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
303 if ((count($pictures) == 1) && !$has_title) {
304 if (!empty($item['object-type']) && ($item['object-type'] == Activity\ObjectType::IMAGE)) {
305 // Replace the preview picture with the real picture
306 $url = str_replace('-1.', '-0.', $pictures[0][2]);
307 $data = ['url' => $url, 'type' => 'photo'];
309 // Checking, if the link goes to a picture
310 $data = ParseUrl::getSiteinfoCached($pictures[0][1], true);
314 // Sometimes photo posts to the own album are not detected at the start.
315 // So we seem to cannot use the cache for these cases. That's strange.
316 if (($data['type'] != 'photo') && strstr($pictures[0][1], "/photos/")) {
317 $data = ParseUrl::getSiteinfo($pictures[0][1], true);
320 if ($data['type'] == 'photo') {
321 $post['type'] = 'photo';
322 if (isset($data['images'][0])) {
323 $post['image'] = $data['images'][0]['src'];
324 $post['url'] = $data['url'];
326 $post['image'] = $data['url'];
329 $post['preview'] = $pictures[0][2];
330 $post['text'] = trim(str_replace($pictures[0][0], '', $body));
332 $imgdata = Images::getInfoFromURLCached($pictures[0][1]);
333 if ($imgdata && substr($imgdata['mime'], 0, 6) == 'image/') {
334 $post['type'] = 'photo';
335 $post['image'] = $pictures[0][1];
336 $post['preview'] = $pictures[0][2];
337 $post['text'] = trim(str_replace($pictures[0][0], '', $body));
340 } elseif (count($pictures) > 0) {
341 $post['type'] = 'link';
342 $post['url'] = $plink;
343 $post['image'] = $pictures[0][2];
344 $post['text'] = $body;
346 foreach ($pictures as $picture) {
347 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
350 } elseif (preg_match_all("(\[img\](.*?)\[\/img\])ism", $body, $pictures, PREG_SET_ORDER)) {
351 if ((count($pictures) == 1) && !$has_title) {
352 $post['type'] = 'photo';
353 $post['image'] = $pictures[0][1];
354 $post['text'] = str_replace($pictures[0][0], '', $body);
355 } elseif (count($pictures) > 0) {
356 $post['type'] = 'link';
357 $post['url'] = $plink;
358 $post['image'] = $pictures[0][1];
359 $post['text'] = $body;
361 foreach ($pictures as $picture) {
362 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
367 // Test for the external links
368 preg_match_all("(\[url\](.*?)\[\/url\])ism", $post['text'], $links1, PREG_SET_ORDER);
369 preg_match_all("(\[url\=(.*?)\].*?\[\/url\])ism", $post['text'], $links2, PREG_SET_ORDER);
371 $links = array_merge($links1, $links2);
373 // If there is only a single one, then use it.
374 // This should cover link posts via API.
375 if ((count($links) == 1) && !isset($post['preview']) && !$has_title) {
376 $post['type'] = 'link';
377 $post['url'] = $links[0][1];
380 // Simplify "video" element
381 $post['text'] = preg_replace('(\[video.*?\ssrc\s?=\s?([^\s\]]+).*?\].*?\[/video\])ism', '[video]$1[/video]', $post['text']);
383 // Now count the number of external media links
384 preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $post['text'], $links1, PREG_SET_ORDER);
385 preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $post['text'], $links2, PREG_SET_ORDER);
386 preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $post['text'], $links3, PREG_SET_ORDER);
387 preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $post['text'], $links4, PREG_SET_ORDER);
389 // Add them to the other external links
390 $links = array_merge($links, $links1, $links2, $links3, $links4);
392 // Are there more than one?
393 if (count($links) > 1) {
394 // The post will be the type "text", which means a blog post
395 unset($post['type']);
396 $post['url'] = $plink;
399 if (!isset($post['type'])) {
400 $post['type'] = "text";
401 $post['text'] = trim($body);
403 } elseif (isset($post['url']) && ($post['type'] == 'video')) {
404 $data = ParseUrl::getSiteinfoCached($post['url'], true);
406 if (isset($data['images'][0])) {
407 $post['image'] = $data['images'][0]['src'];
415 * Remove [attachment] BBCode and replaces it with a regular [url]
417 * @param string $body
418 * @param boolean $no_link_desc No link description
420 * @return string with replaced body
422 public static function removeAttachment($body, $no_link_desc = false)
424 return preg_replace_callback("/\s*\[attachment (.*)\](.*?)\[\/attachment\]\s*/ism",
425 function ($match) use ($no_link_desc) {
426 $attach_data = self::getAttachmentData($match[0]);
427 if (empty($attach_data['url'])) {
429 } elseif (empty($attach_data['title']) || $no_link_desc) {
430 return "\n[url]" . $attach_data['url'] . "[/url]\n";
432 return "\n[url=" . $attach_data['url'] . ']' . $attach_data['title'] . "[/url]\n";
438 * Converts a BBCode text into plaintext
441 * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
445 public static function toPlaintext($text, $keep_urls = true)
447 $naked_text = HTML::toPlaintext(self::convert($text, false, 0, true), 0, !$keep_urls);
452 private static function proxyUrl($image, $simplehtml = self::INTERNAL)
454 // Only send proxied pictures to API and for internal display
455 if (in_array($simplehtml, [self::INTERNAL, self::API])) {
456 return ProxyUtils::proxifyUrl($image);
463 * This function changing the visual size (not the real size) of images.
464 * The function does not work for pictures with an alternate text description.
465 * This could only be changed by using some new "img" BBCode format.
467 * @param string $srctext The body with images
468 * @return string The body with possibly scaled images
470 public static function scaleExternalImages(string $srctext)
474 // Simplify image links
475 $s = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $s);
478 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
480 foreach ($matches as $mtch) {
481 Logger::log('scale_external_image: ' . $mtch[1]);
483 $hostname = str_replace('www.', '', substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3));
484 if (stristr($mtch[1], $hostname)) {
488 $curlResult = DI::httpRequest()->get($mtch[1]);
489 if (!$curlResult->isSuccess()) {
493 $i = $curlResult->getBody();
494 $type = $curlResult->getContentType();
495 $type = Images::getMimeTypeByData($i, $mtch[1], $type);
498 $Image = new Image($i, $type);
499 if ($Image->isValid()) {
500 $orig_width = $Image->getWidth();
501 $orig_height = $Image->getHeight();
503 if ($orig_width > 640 || $orig_height > 640) {
504 $Image->scaleDown(640);
505 $new_width = $Image->getWidth();
506 $new_height = $Image->getHeight();
507 Logger::info('External images scaled', ['orig_width' => $orig_width, 'new_width' => $new_width, 'orig_height' => $orig_height, 'new_height' => $new_height, 'match' => $mtch[0]]);
510 '[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
514 Logger::info('New string', ['image' => $s]);
525 * Truncates imported message body string length to max_import_size
527 * The purpose of this function is to apply system message length limits to
528 * imported messages without including any embedded photos in the length
530 * @param string $body
532 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
534 public static function limitBodySize($body)
536 $maxlen = DI::config()->get('config', 'max_import_size', 0);
538 // If the length of the body, including the embedded images, is smaller
539 // than the maximum, then don't waste time looking for the images
540 if ($maxlen && (strlen($body) > $maxlen)) {
542 Logger::info('the total body length exceeds the limit', ['maxlen' => $maxlen, 'body_len' => strlen($body)]);
548 $img_start = strpos($orig_body, '[img');
549 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
550 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
551 while (($img_st_close !== false) && ($img_end !== false)) {
553 $img_st_close++; // make it point to AFTER the closing bracket
554 $img_end += $img_start;
555 $img_end += strlen('[/img]');
557 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
558 // This is an embedded image
560 if (($textlen + $img_start) > $maxlen) {
561 if ($textlen < $maxlen) {
562 Logger::info('the limit happens before an embedded image');
563 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
567 $new_body = $new_body . substr($orig_body, 0, $img_start);
568 $textlen += $img_start;
571 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
574 if (($textlen + $img_end) > $maxlen) {
575 if ($textlen < $maxlen) {
576 Logger::info('the limit happens before the end of a non-embedded image');
577 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
581 $new_body = $new_body . substr($orig_body, 0, $img_end);
582 $textlen += $img_end;
585 $orig_body = substr($orig_body, $img_end);
587 if ($orig_body === false) {
588 // in case the body ends on a closing image tag
592 $img_start = strpos($orig_body, '[img');
593 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
594 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
597 if (($textlen + strlen($orig_body)) > $maxlen) {
598 if ($textlen < $maxlen) {
599 Logger::info('the limit happens after the end of the last image');
600 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
603 Logger::info('the text size with embedded images extracted did not violate the limit');
604 $new_body = $new_body . $orig_body;
614 * Processes [attachment] tags
616 * Note: Can produce a [bookmark] tag in the returned string
618 * @param string $text
619 * @param integer $simplehtml
620 * @param bool $tryoembed
622 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
624 private static function convertAttachment($text, $simplehtml = self::INTERNAL, $tryoembed = true)
626 $data = self::getAttachmentData($text);
627 if (empty($data) || empty($data['url'])) {
631 if (isset($data['title'])) {
632 $data['title'] = strip_tags($data['title']);
633 $data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
635 $data['title'] = null;
638 if (((strpos($data['text'], "[img=") !== false) || (strpos($data['text'], "[img]") !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
639 $data['preview'] = $data['image'];
645 if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
646 $return = OEmbed::getHTML($data['url'], $data['title']);
648 throw new Exception('OEmbed is disabled for this attachment.');
650 } catch (Exception $e) {
651 $data['title'] = ($data['title'] ?? '') ?: $data['url'];
653 if ($simplehtml != self::CONNECTORS) {
654 $return = sprintf('<div class="type-%s">', $data['type']);
657 if (!empty($data['title']) && !empty($data['url'])) {
658 if (!empty($data['image']) && empty($data['text']) && ($data['type'] == 'photo')) {
659 $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), $data['title']);
661 if (!empty($data['image'])) {
662 $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), $data['title']);
663 } elseif (!empty($data['preview'])) {
664 $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), $data['title']);
666 $return .= sprintf('<h4><a href="%s">%s</a></h4>', $data['url'], $data['title']);
670 if (!empty($data['description']) && $data['description'] != $data['title']) {
671 // Sanitize the HTML by converting it to BBCode
672 $bbcode = HTML::toBBCode($data['description']);
673 $return .= sprintf('<blockquote>%s</blockquote>', trim(self::convert($bbcode)));
676 if (!empty($data['url'])) {
677 $return .= sprintf('<sup><a href="%s">%s</a></sup>', $data['url'], parse_url($data['url'], PHP_URL_HOST));
680 if ($simplehtml != self::CONNECTORS) {
685 return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
688 public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
690 $data = self::getAttachmentData($Text);
695 return $data['text'] . ($data['after'] ?? '');
698 $title = htmlentities($data['title'] ?? '', ENT_QUOTES, 'UTF-8', false);
699 $text = htmlentities($data['text'], ENT_QUOTES, 'UTF-8', false);
700 if ($plaintext || (($title != '') && strstr($text, $title))) {
701 $data['title'] = $data['url'];
702 } elseif (($text != '') && strstr($title, $text)) {
703 $data['text'] = $data['title'];
704 $data['title'] = $data['url'];
707 if (empty($data['text']) && !empty($data['title']) && empty($data['url'])) {
708 return $data['title'] . $data['after'];
711 // If the link already is included in the post, don't add it again
712 if (!empty($data['url']) && strpos($data['text'], $data['url'])) {
713 return $data['text'] . $data['after'];
716 $text = $data['text'];
718 if (!empty($data['url']) && !empty($data['title'])) {
719 $text .= "\n[url=" . $data['url'] . ']' . $data['title'] . '[/url]';
720 } elseif (!empty($data['url'])) {
721 $text .= "\n[url]" . $data['url'] . '[/url]';
724 return $text . "\n" . $data['after'];
728 * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
730 * @param array $match Array with the matching values
731 * @return string reformatted link including HTML codes
733 private static function convertUrlForActivityPubCallback($match)
737 if (isset($match[2]) && ($match[1] != $match[2])) {
741 $parts = parse_url($url);
742 if (!isset($parts['scheme'])) {
746 return self::convertUrlForActivityPub($url);
750 * Converts [url] BBCodes in a format that looks fine on ActivityPub systems.
752 * @param string $url URL that is about to be reformatted
753 * @return string reformatted link including HTML codes
755 private static function convertUrlForActivityPub($url)
757 $html = '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>';
758 return sprintf($html, $url, self::getStyledURL($url));
762 * Converts an URL in a nicer format (without the scheme and possibly shortened)
764 * @param string $url URL that is about to be reformatted
765 * @return string reformatted link
767 private static function getStyledURL($url)
769 $parts = parse_url($url);
770 $scheme = $parts['scheme'] . '://';
771 $styled_url = str_replace($scheme, '', $url);
773 if (strlen($styled_url) > 30) {
774 $styled_url = substr($styled_url, 0, 30) . "…";
781 * [noparse][i]italic[/i][/noparse] turns into
782 * [noparse][ i ]italic[ /i ][/noparse],
783 * to hide them from parser.
785 private static function escapeNoparseCallback($match)
787 $whole_match = $match[0];
788 $captured = $match[1];
789 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
790 $new_str = str_replace($captured, $spacefied, $whole_match);
795 * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
796 * now turns back and the [noparse] tags are trimed
797 * returning [i]italic[/i]
799 private static function unescapeNoparseCallback($match)
801 $captured = $match[1];
802 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
807 * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
810 * @param string $text Text to search
811 * @param string $name Tag name
812 * @param int $occurrences Number of first occurrences to skip
813 * @return boolean|array
815 public static function getTagPosition($text, $name, $occurrences = 0)
817 if ($occurrences < 0) {
822 for ($i = 0; $i <= $occurrences; $i++) {
823 if ($start_open !== false) {
824 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
828 if ($start_open === false) {
832 $start_equal = strpos($text, '=', $start_open);
833 $start_close = strpos($text, ']', $start_open);
835 if ($start_close === false) {
841 $end_open = strpos($text, '[/' . $name . ']', $start_close);
843 if ($end_open === false) {
849 'open' => $start_open,
850 'close' => $start_close
854 'close' => $end_open + strlen('[/' . $name . ']')
858 if ($start_equal !== false) {
859 $res['start']['equal'] = $start_equal + 1;
866 * Performs a preg_replace within the boundaries of all named BBCode tags in a text
868 * @param string $pattern Preg pattern string
869 * @param string $replace Preg replace string
870 * @param string $name BBCode tag name
871 * @param string $text Text to search
874 public static function pregReplaceInTag($pattern, $replace, $name, $text)
877 $pos = self::getTagPosition($text, $name, $occurrences);
878 while ($pos !== false && $occurrences++ < 1000) {
879 $start = substr($text, 0, $pos['start']['open']);
880 $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
881 $end = substr($text, $pos['end']['close']);
882 if ($end === false) {
886 $subject = preg_replace($pattern, $replace, $subject);
887 $text = $start . $subject . $end;
889 $pos = self::getTagPosition($text, $name, $occurrences);
895 private static function extractImagesFromItemBody($body)
902 $img_start = strpos($orig_body, '[img');
903 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
904 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
905 while (($img_st_close !== false) && ($img_end !== false)) {
906 $img_st_close++; // make it point to AFTER the closing bracket
907 $img_end += $img_start;
909 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
910 // This is an embedded image
911 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
912 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
916 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
919 $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
921 if ($orig_body === false) {
922 // in case the body ends on a closing image tag
926 $img_start = strpos($orig_body, '[img');
927 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
928 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
931 $new_body = $new_body . $orig_body;
933 return ['body' => $new_body, 'images' => $saved_image];
936 private static function interpolateSavedImagesIntoItemBody($body, array $images)
941 foreach ($images as $image) {
942 // We're depending on the property of 'foreach' (specified on the PHP website) that
943 // it loops over the array starting from the first element and going sequentially
944 // to the last element
945 $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
946 '<img src="' . self::proxyUrl($image) . '" alt="' . DI::l10n()->t('Image/photo') . '" />', $newbody);
954 * This function converts a [share] block to text according to a provided callback function whose signature is:
956 * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
959 * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
961 * - $author_contact is a contact record array
962 * - $content is the inner content of the [share] block
963 * - $is_quote_share indicates whether there's any content before the [share] block
964 * - Return value is the string that should replace the [share] block in the provided text
966 * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
968 * @param string $text A BBCode string
969 * @param callable $callback
970 * @return string The BBCode string with all [share] blocks replaced
972 public static function convertShare($text, callable $callback)
974 $return = preg_replace_callback(
975 "/(.*?)\[share(.*?)\](.*)\[\/share\]/ism",
976 function ($match) use ($callback) {
977 $attribute_string = $match[2];
979 foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid'] as $field) {
980 preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
981 $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
984 $author_contact = Contact::getByURL($attributes['profile'], false, ['url', 'addr', 'name', 'micro']);
985 $author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
986 $author_contact['addr'] = ($author_contact['addr'] ?? '') ?: Protocol::getAddrFromProfileUrl($attributes['profile']);
988 $attributes['author'] = ($author_contact['name'] ?? '') ?: $attributes['author'];
989 $attributes['avatar'] = ($author_contact['micro'] ?? '') ?: $attributes['avatar'];
990 $attributes['profile'] = ($author_contact['url'] ?? '') ?: $attributes['profile'];
992 if ($attributes['avatar']) {
993 $attributes['avatar'] = ProxyUtils::proxifyUrl($attributes['avatar'], false, ProxyUtils::SIZE_THUMB);
996 return $match[1] . $callback($attributes, $author_contact, $match[3], trim($match[1]) != '');
1005 * Default [share] tag conversion callback
1007 * Note: Can produce a [bookmark] tag in the output
1009 * @see BBCode::convertShare()
1010 * @param array $attributes [share] block attribute values
1011 * @param array $author_contact Contact row of the shared author
1012 * @param string $content Inner content of the [share] block
1013 * @param boolean $is_quote_share Whether there is content before the [share] block
1014 * @param integer $simplehtml Mysterious integer value depending on the target network/formatting style
1016 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1018 private static function convertShareCallback(array $attributes, array $author_contact, $content, $is_quote_share, $simplehtml)
1020 $mention = Protocol::formatMention($attributes['profile'], $attributes['author']);
1022 switch ($simplehtml) {
1024 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n" . $content;
1026 case self::DIASPORA:
1027 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
1028 $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
1030 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
1032 if (!empty($attributes['posted']) && !empty($attributes['link'])) {
1033 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
1036 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
1038 if (empty($attributes['posted']) && !empty($attributes['link'])) {
1039 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
1044 case self::CONNECTORS:
1045 $headline = '<p><b>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8');
1046 $headline .= DI::l10n()->t('<a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
1047 $headline .= ':</b></p>' . "\n";
1049 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content">' . trim($content) . '</blockquote>' . "\n";
1053 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
1055 case self::ACTIVITYPUB:
1056 $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>';
1057 $text = '<div><a href="' . $attributes['link'] . '">' . html_entity_decode('♲', ENT_QUOTES, 'UTF-8') . '</a> ' . $author . '<blockquote>' . $content . '</blockquote></div>' . "\n";
1060 $text = ($is_quote_share? "\n" : '');
1062 $contact = Contact::getByURL($attributes['profile'], false, ['network']);
1063 $network = $contact['network'] ?? Protocol::PHANTOM;
1065 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
1066 $text .= Renderer::replaceMacros($tpl, [
1067 '$profile' => $attributes['profile'],
1068 '$avatar' => $attributes['avatar'],
1069 '$author' => $attributes['author'],
1070 '$link' => $attributes['link'],
1071 '$link_title' => DI::l10n()->t('link to source'),
1072 '$posted' => $attributes['posted'],
1073 '$guid' => $attributes['guid'],
1074 '$network_name' => ContactSelector::networkToName($network, $attributes['profile']),
1075 '$network_icon' => ContactSelector::networkToIcon($network, $attributes['profile']),
1076 '$content' => self::setMentions(trim($content), 0, $network),
1084 private static function removePictureLinksCallback($match)
1086 $cache_key = 'remove:' . $match[1];
1087 $text = DI::cache()->get($cache_key);
1089 if (is_null($text)) {
1092 $stamp1 = microtime(true);
1094 $ch = @curl_init($match[1]);
1095 @curl_setopt($ch, CURLOPT_NOBODY, true);
1096 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1097 @curl_setopt($ch, CURLOPT_USERAGENT, DI::httpRequest()->getUserAgent());
1099 $curl_info = @curl_getinfo($ch);
1101 DI::profiler()->saveTimestamp($stamp1, "network");
1103 if (substr($curl_info['content_type'], 0, 6) == 'image/') {
1104 $text = "[url=" . $match[1] . ']' . $match[1] . "[/url]";
1106 $text = "[url=" . $match[2] . ']' . $match[2] . "[/url]";
1108 // if its not a picture then look if its a page that contains a picture link
1109 $body = DI::httpRequest()->fetch($match[1]);
1111 $doc = new DOMDocument();
1112 @$doc->loadHTML($body);
1113 $xpath = new DOMXPath($doc);
1114 $list = $xpath->query("//meta[@name]");
1115 foreach ($list as $node) {
1118 if ($node->attributes->length) {
1119 foreach ($node->attributes as $attribute) {
1120 $attr[$attribute->name] = $attribute->value;
1124 if (strtolower($attr['name']) == 'twitter:image') {
1125 $text = '[url=' . $attr['content'] . ']' . $attr['content'] . '[/url]';
1129 DI::cache()->set($cache_key, $text);
1135 private static function expandLinksCallback($match)
1137 if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1138 return ($match[1] . "[url]" . $match[2] . "[/url]");
1140 return ($match[1] . $match[3] . " [url]" . $match[2] . "[/url]");
1144 private static function cleanPictureLinksCallback($match)
1148 // When the picture link is the own photo path then we can avoid fetching the link
1149 $own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()->get()) . '/photos/');
1150 if (preg_match('|' . $own_photo_url . '.*?/image/|', Strings::normaliseLink($match[1]))) {
1151 if (!empty($match[3])) {
1152 $text = '[img=' . str_replace('-1.', '-0.', $match[2]) . ']' . $match[3] . '[/img]';
1154 $text = '[img]' . str_replace('-1.', '-0.', $match[2]) . '[/img]';
1159 $cache_key = 'clean:' . $match[1];
1160 $text = DI::cache()->get($cache_key);
1161 if (!is_null($text)) {
1165 // Only fetch the header, not the content
1166 $stamp1 = microtime(true);
1168 $ch = @curl_init($match[1]);
1169 @curl_setopt($ch, CURLOPT_NOBODY, true);
1170 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1171 @curl_setopt($ch, CURLOPT_USERAGENT, DI::httpRequest()->getUserAgent());
1173 $curl_info = @curl_getinfo($ch);
1175 DI::profiler()->saveTimestamp($stamp1, "network");
1177 // if its a link to a picture then embed this picture
1178 if (substr($curl_info['content_type'], 0, 6) == 'image/') {
1179 $text = '[img]' . $match[1] . '[/img]';
1181 if (!empty($match[3])) {
1182 $text = '[img=' . $match[2] . ']' . $match[3] . '[/img]';
1184 $text = '[img]' . $match[2] . '[/img]';
1187 // if its not a picture then look if its a page that contains a picture link
1188 $body = DI::httpRequest()->fetch($match[1]);
1190 $doc = new DOMDocument();
1191 @$doc->loadHTML($body);
1192 $xpath = new DOMXPath($doc);
1193 $list = $xpath->query("//meta[@name]");
1194 foreach ($list as $node) {
1196 if ($node->attributes->length) {
1197 foreach ($node->attributes as $attribute) {
1198 $attr[$attribute->name] = $attribute->value;
1202 if (strtolower($attr['name']) == "twitter:image") {
1203 if (!empty($match[3])) {
1204 $text = "[img=" . $attr['content'] . "]" . $match[3] . "[/img]";
1206 $text = "[img]" . $attr['content'] . "[/img]";
1211 DI::cache()->set($cache_key, $text);
1216 public static function cleanPictureLinks($text)
1218 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1219 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $return);
1223 public static function removeLinks(string $bbcode)
1225 $bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
1226 $bbcode = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $bbcode);
1228 $bbcode = preg_replace('/[@!#]\[url\=.*?\].*?\[\/url\]/ism', '', $bbcode);
1229 $bbcode = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $bbcode);
1230 $bbcode = preg_replace('/[@!#]?\[url.*?\[\/url\]/ism', '', $bbcode);
1235 * Converts a BBCode message to HTML message
1237 * BBcode 2 HTML was written by WAY2WEB.net
1238 * extended to work with Mistpark/Friendica - Mike Macgirvin
1240 * Simple HTML values meaning:
1241 * - 0: Friendica display
1243 * - 2: Used for Windows Phone push, Friendica API
1244 * - 3: Used before converting to Markdown in bb2diaspora.php
1245 * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1248 * - 7: Used for dfrn, OStatus
1249 * - 8: Used for Twitter, WP backlink text setting
1252 * @param string $text
1253 * @param bool $try_oembed
1254 * @param int $simple_html
1255 * @param bool $for_plaintext
1257 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1259 public static function convert(string $text = null, $try_oembed = true, $simple_html = self::INTERNAL, $for_plaintext = false)
1261 // Accounting for null default column values
1262 if (is_null($text) || $text === '') {
1268 $text = self::performWithEscapedTags($text, ['code'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a) {
1269 $text = self::performWithEscapedTags($text, ['noparse', 'nobb', 'pre'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a) {
1271 * preg_match_callback function to replace potential Oembed tags with Oembed content
1273 * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1275 * $match[2] = $title or absent
1277 $try_oembed_callback = function ($match)
1280 $title = $match[2] ?? null;
1283 $return = OEmbed::getHTML($url, $title);
1284 } catch (Exception $ex) {
1285 $return = $match[0];
1293 // Remove the abstract element. It is a non visible element.
1294 $text = self::stripAbstract($text);
1296 // Move new lines outside of tags
1297 $text = preg_replace("#\[(\w*)](\n*)#ism", '$2[$1]', $text);
1298 $text = preg_replace("#(\n*)\[/(\w*)]#ism", '[/$2]$1', $text);
1300 // Extract the private images which use data urls since preg has issues with
1301 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1302 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1304 $extracted = self::extractImagesFromItemBody($text);
1305 $text = $extracted['body'];
1306 $saved_image = $extracted['images'];
1308 // If we find any event code, turn it into an event.
1309 // After we're finished processing the bbcode we'll
1310 // replace all of the event code with a reformatted version.
1312 $ev = Event::fromBBCode($text);
1314 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1315 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1317 $text = str_replace("<", "<", $text);
1318 $text = str_replace(">", ">", $text);
1320 // remove some newlines before the general conversion
1321 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
1322 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
1324 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1326 $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1329 // Convert new line chars to html <br /> tags
1331 // nlbr seems to be hopelessly messed up
1332 // $Text = nl2br($Text);
1334 // We'll emulate it.
1336 $text = trim($text);
1337 $text = str_replace("\r\n", "\n", $text);
1339 // Remove linefeeds inside of the table elements. See issue #6799
1340 $search = ["\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1341 "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1342 "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1343 "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] "];
1344 $replace = ["[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1345 "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1346 "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1347 "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]"];
1350 $text = str_replace($search, $replace, $text);
1351 } while ($oldtext != $text);
1353 // Replace these here only once
1354 $search = ["\n[table]", "[/table]\n"];
1355 $replace = ["[table]", "[/table]"];
1356 $text = str_replace($search, $replace, $text);
1358 // removing multiplicated newlines
1359 if (DI::config()->get('system', 'remove_multiplicated_lines')) {
1360 $search = ["\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
1361 "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1362 $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1363 "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1366 $text = str_replace($search, $replace, $text);
1367 } while ($oldtext != $text);
1370 /// @todo Have a closer look at the different html modes
1371 // Handle attached links or videos
1372 if ($simple_html == self::ACTIVITYPUB) {
1373 $text = self::removeAttachment($text);
1374 } elseif (!in_array($simple_html, [self::INTERNAL, self::CONNECTORS])) {
1375 $text = self::removeAttachment($text, true);
1377 $text = self::convertAttachment($text, $simple_html, $try_oembed);
1380 // leave open the posibility of [map=something]
1381 // this is replaced in Item::prepareBody() which has knowledge of the item location
1382 if (strpos($text, '[/map]') !== false) {
1383 $text = preg_replace_callback(
1384 "/\[map\](.*?)\[\/map\]/ism",
1385 function ($match) use ($simple_html) {
1386 return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1392 if (strpos($text, '[map=') !== false) {
1393 $text = preg_replace_callback(
1394 "/\[map=(.*?)\]/ism",
1395 function ($match) use ($simple_html) {
1396 return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1402 if (strpos($text, '[map]') !== false) {
1403 $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1406 // Check for headers
1407 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1408 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1409 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1410 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1411 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1412 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $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: initial;\">$2</span>", $text);
1439 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1; line-height: initial;\">$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 style sheet commands
1453 $text = preg_replace_callback(
1454 "(\[style=(.*?)\](.*?)\[\/style\])ism",
1456 return "<span style=\"" . HTML::sanitizeCSS($match[1]) . ";\">" . $match[2] . "</span>";
1461 // Check for CSS classes
1462 $text = preg_replace_callback(
1463 "(\[class=(.*?)\](.*?)\[\/class\])ism",
1465 return "<span class=\"" . HTML::sanitizeCSS($match[1]) . "\">" . $match[2] . "</span>";
1470 // handle nested lists
1473 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1474 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1475 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1476 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1477 $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1478 $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1479 $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1480 $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1481 $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1482 $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1483 $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1484 $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1485 $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1486 $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1489 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1490 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1491 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1492 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
1494 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1495 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1497 $text = str_replace('[hr]', '<hr />', $text);
1499 if (!$for_plaintext) {
1502 // Escaping BBCodes susceptible to contain rogue URL we don'' want the autolinker to catch
1503 $text = preg_replace_callback('#\[(url|img|audio|video|youtube|vimeo|share|attachment|iframe|bookmark).+?\[/\1\]#ism',
1504 function ($matches) use (&$escaped) {
1505 $return = '{escaped-' . count($escaped) . '}';
1506 $escaped[] = $matches[0];
1513 // Autolinker for isolated URLs
1514 $text = preg_replace(Strings::autoLinkRegEx(), '[url]$1[/url]', $text);
1516 // Restoring escaped blocks
1517 $text = preg_replace_callback('/{escaped-([0-9]+)}/iU',
1518 function ($matches) use ($escaped) {
1519 return $escaped[intval($matches[1])] ?? $matches[0];
1525 // This is actually executed in Item::prepareBody()
1527 $nosmile = strpos($text, '[nosmile]') !== false;
1528 $text = str_replace('[nosmile]', '', $text);
1530 // Check for font change text
1531 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1533 // Declare the format for [spoiler] layout
1534 $SpoilerLayout = '<details class="spoiler"><summary>' . DI::l10n()->t('Click to open/close') . '</summary>$1</details>';
1536 // Check for [spoiler] text
1537 // handle nested quotes
1539 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1540 $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", $SpoilerLayout, $text);
1543 // Check for [spoiler=Title] text
1545 // handle nested quotes
1547 while ((strpos($text, "[/spoiler]")!== false) && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1548 $text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1549 '<details class="spoiler"><summary>$1</summary>$2</details>',
1553 // Declare the format for [quote] layout
1554 $QuoteLayout = '<blockquote>$1</blockquote>';
1556 // Check for [quote] text
1557 // handle nested quotes
1559 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1560 $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1563 // Check for [quote=Author] text
1565 $t_wrote = DI::l10n()->t('$1 wrote:');
1567 // handle nested quotes
1569 while ((strpos($text, "[/quote]")!== false) && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1570 $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1571 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1576 // [img=widthxheight]image source[/img]
1577 $text = preg_replace_callback(
1578 "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1579 function ($matches) use ($simple_html) {
1580 if (strpos($matches[3], "data:image/") === 0) {
1584 $matches[3] = self::proxyUrl($matches[3], $simple_html);
1585 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1590 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1591 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1593 $text = preg_replace_callback("/\[img\=(.*?)\](.*?)\[\/img\]/ism",
1594 function ($matches) use ($simple_html) {
1595 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1596 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1597 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '" title="' . $matches[2] . '">';
1602 // [img]pathtoimage[/img]
1603 $text = preg_replace_callback(
1604 "/\[img\](.*?)\[\/img\]/ism",
1605 function ($matches) use ($simple_html) {
1606 if (strpos($matches[1], "data:image/") === 0) {
1610 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1611 return "[img]" . $matches[1] . "[/img]";
1616 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1617 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1619 $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);
1620 $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 />', $text);
1621 //$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);
1623 // Simplify "video" element
1624 $text = preg_replace('(\[video.*?\ssrc\s?=\s?([^\s\]]+).*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
1628 $text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism", '<video src="$1" controls="controls" width="' . $a->videowidth . '" height="' . $a->videoheight . '" loop="true"><a href="$1">$1</a></video>', $text);
1629 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $text);
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("/\[video\](.*?)\[\/video\]/ism",
1635 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1636 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1637 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1640 // html5 video and audio
1644 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<iframe src="$1" width="' . $a->videowidth . '" height="' . $a->videoheight . '"><a href="$1">$1</a></iframe>', $text);
1646 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1649 // Youtube extensions
1651 $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1652 $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1653 $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1656 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1657 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1658 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1661 $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://www.youtube.com/embed/$1" frameborder="0" ></iframe>', $text);
1663 $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1664 '<a href="https://www.youtube.com/watch?v=$1" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=$1</a>', $text);
1668 $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1669 $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
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->videowidth . '" height="' . $a->videoheight . '" src="https://player.vimeo.com/video/$1" frameborder="0" ></iframe>', $text);
1678 $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1679 '<a href="https://vimeo.com/$1" target="_blank" rel="noopener noreferrer">https://vimeo.com/$1</a>', $text);
1683 $text = OEmbed::BBCode2HTML($text);
1685 // Avoid triple linefeeds through oembed
1686 $text = str_replace("<br style='clear:left'></span><br /><br />", "<br style='clear:left'></span><br />", $text);
1688 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1689 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1690 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1691 // start which is always required). Allow desc with a missing summary for compatibility.
1693 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1694 $sub = Event::getHTML($ev, $simple_html);
1696 $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1697 $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1698 $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1699 $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1700 $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1701 $text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism", '', $text);
1702 $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1705 // Replace non graphical smilies for external posts
1706 if (!$nosmile && !$for_plaintext) {
1707 $text = Smilies::replace($text);
1710 if (!$for_plaintext && DI::config()->get('system', 'big_emojis') && ($simple_html != self::DIASPORA)) {
1711 $conv = html_entity_decode(str_replace([' ', "\n", "\r"], '', $text));
1712 // Emojis are always 4 byte Unicode characters
1713 if (!empty($conv) && (strlen($conv) / mb_strlen($conv) == 4)) {
1714 $text = '<span style="font-size: xx-large; line-height: initial;">' . $text . '</span>';
1718 if (!$for_plaintext) {
1719 if (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1720 $text = preg_replace_callback("/\[url\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1721 $text = preg_replace_callback("/\[url\=(.*?)\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1724 $text = preg_replace("(\[url\](.*?)\[\/url\])ism", " $1 ", $text);
1725 $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
1728 $text = str_replace(["\r","\n"], ['<br />', '<br />'], $text);
1730 // Remove all hashtag addresses
1731 if ($simple_html && !in_array($simple_html, [self::DIASPORA, self::OSTATUS, self::ACTIVITYPUB])) {
1732 $text = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $text);
1733 } elseif ($simple_html == self::DIASPORA) {
1734 // The ! is converted to @ since Diaspora only understands the @
1735 $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1736 '@<a href="$2">$3</a>',
1738 } elseif (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1739 $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1740 '$1<span class="vcard"><a href="$2" class="url u-url mention" title="$3"><span class="fn nickname mention">$3</span></a></span>',
1742 } elseif (!$simple_html) {
1743 $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1744 '$1<a href="$2" class="userinfo mention" title="$3">$3</a>',
1748 // Bookmarks in red - will be converted to bookmarks in friendica
1749 $text = preg_replace("/#\^\[url\](.*?)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1750 $text = preg_replace("/#\^\[url\=(.*?)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1751 $text = preg_replace("/#\[url\=.*?\]\^\[\/url\]\[url\=(.*?)\](.*?)\[\/url\]/i",
1752 "[bookmark=$1]$2[/bookmark]", $text);
1754 if (in_array($simple_html, [self::API, self::OSTATUS, self::TWITTER])) {
1755 $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
1756 //$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
1757 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$text);
1760 // Perform URL Search
1762 $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1765 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1767 // Handle Diaspora posts
1768 $text = preg_replace_callback(
1769 "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1771 return "[url=" . DI::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
1775 $text = preg_replace_callback(
1776 "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
1778 return "[url=" . DI::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
1782 // Server independent link to posts and comments
1783 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
1784 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1785 $text = preg_replace($expression, DI::baseUrl()."/display/$1", $text);
1789 * - #[url=<anything>]<term>[/url]
1790 * - [url=<anything>]#<term>[/url]
1792 $text = preg_replace_callback("/(?:#\[url\=[^\[\]]*\]|\[url\=[^\[\]]*\]#)(.*?)\[\/url\]/ism", function($matches) use ($simple_html) {
1793 if ($simple_html == BBCode::ACTIVITYPUB) {
1794 return '<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1795 . '" data-tag="' . XML::escape($matches[1]) . '" rel="tag ugc">#'
1796 . XML::escape($matches[1]) . '</a>';
1798 return '#<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1799 . '" class="tag" rel="tag" title="' . XML::escape($matches[1]) . '">'
1800 . XML::escape($matches[1]) . '</a>';
1804 // We need no target="_blank" rel="noopener noreferrer" for local links
1805 // convert links start with DI::baseUrl() as local link without the target="_blank" rel="noopener noreferrer" attribute
1806 $escapedBaseUrl = preg_quote(DI::baseUrl(), '/');
1807 $text = preg_replace("/\[url\](".$escapedBaseUrl.".*?)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
1808 $text = preg_replace("/\[url\=(".$escapedBaseUrl.".*?)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
1810 $text = preg_replace("/\[url\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1811 $text = preg_replace("/\[url\=(.*?)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
1813 // Red compatibility, though the link can't be authenticated on Friendica
1814 $text = preg_replace("/\[zrl\=(.*?)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
1817 // we may need to restrict this further if it picks up too many strays
1818 // link acct:user@host to a webfinger profile redirector
1820 $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);
1822 // Perform MAIL Search
1823 $text = preg_replace("/\[mail\](.*?)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
1824 $text = preg_replace("/\[mail\=(.*?)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
1826 /// @todo What is the meaning of these lines?
1827 $text = preg_replace('/\[\&\;([#a-z0-9]+)\;\]/', '&$1;', $text);
1828 $text = preg_replace('/\&\#039\;/', '\'', $text);
1830 // Currently deactivated, it made problems with " inside of alt texts.
1831 //$text = preg_replace('/\"\;/', '"', $text);
1833 // fix any escaped ampersands that may have been converted into links
1834 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
1836 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
1837 $allowed_src_protocols = ['//', 'http://', 'https://', 'redir/', 'cid:'];
1839 array_walk($allowed_src_protocols, function(&$value) { $value = preg_quote($value, '#');});
1841 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
1842 '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . DI::l10n()->t('Invalid source protocol') . '">', $text);
1844 // sanitize href attributes (only allowlisted protocols URLs)
1845 // default value for backward compatibility
1846 $allowed_link_protocols = DI::config()->get('system', 'allowed_link_protocols', []);
1848 // Always allowed protocol even if config isn't set or not including it
1849 $allowed_link_protocols[] = '//';
1850 $allowed_link_protocols[] = 'http://';
1851 $allowed_link_protocols[] = 'https://';
1852 $allowed_link_protocols[] = 'redir/';
1854 array_walk($allowed_link_protocols, function(&$value) { $value = preg_quote($value, '#');});
1856 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
1857 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . DI::l10n()->t('Invalid link protocol') . '">', $text);
1860 $text = self::convertShare(
1862 function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
1863 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
1867 $text = self::interpolateSavedImagesIntoItemBody($text, $saved_image);
1870 }); // Escaped noparse, nobb, pre
1872 // Remove escaping tags
1873 $text = preg_replace("/\[noparse\](.*?)\[\/noparse\]/ism", '\1', $text);
1874 $text = preg_replace("/\[nobb\](.*?)\[\/nobb\]/ism", '\1', $text);
1876 // Additionally, [pre] tags preserve spaces
1877 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", function ($match) {
1878 return str_replace(' ', ' ', $match[1]);
1884 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
1885 function ($matches) {
1886 if (strpos($matches[2], "\n") !== false) {
1887 $return = '<pre><code class="language-' . trim($matches[1]) . '">' . htmlspecialchars(trim($matches[2], "\n\r"), ENT_NOQUOTES, 'UTF-8') . '</code></pre>';
1889 $return = '<code>' . htmlspecialchars($matches[2], ENT_NOQUOTES, 'UTF-8') . '</code>';
1897 // Clean up the HTML by loading and saving the HTML with the DOM.
1898 // Bad structured html can break a whole page.
1899 // For performance reasons do it only with activated item cache or at export.
1900 if (!$try_oembed || (get_itemcachepath() != '')) {
1901 $doc = new DOMDocument();
1902 $doc->preserveWhiteSpace = false;
1904 $text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
1906 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
1907 $encoding = '<?xml encoding="UTF-8">';
1908 @$doc->loadHTML($encoding . $doctype . '<html><body>' . $text . '</body></html>');
1909 $doc->encoding = 'UTF-8';
1910 $text = $doc->saveHTML();
1911 $text = str_replace(['<html><body>', '</body></html>', $doctype, $encoding], ['', '', '', ''], $text);
1913 $text = str_replace('<br></li>', '</li>', $text);
1915 //$Text = mb_convert_encoding($Text, "UTF-8", 'HTML-ENTITIES');
1918 // Clean up some useless linebreaks in lists
1919 //$Text = str_replace('<br /><ul', '<ul ', $Text);
1920 //$Text = str_replace('</ul><br />', '</ul>', $Text);
1921 //$Text = str_replace('</li><br />', '</li>', $Text);
1922 //$Text = str_replace('<br /><li>', '<li>', $Text);
1923 //$Text = str_replace('<br /><ul', '<ul ', $Text);
1925 Hook::callAll('bbcode', $text);
1931 * Strips the "abstract" tag from the provided text
1933 * @param string $text The text with BBCode
1934 * @return string The same text - but without "abstract" element
1936 public static function stripAbstract($text)
1938 $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", '', $text);
1939 $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", '', $text);
1945 * Returns the value of the "abstract" element
1947 * @param string $text The text that maybe contains the element
1948 * @param string $addon The addon for which the abstract is meant for
1949 * @return string The abstract
1951 public static function getAbstract($text, $addon = '')
1955 $addon = strtolower($addon);
1957 if (preg_match_all("/\[abstract=(.*?)\](.*?)\[\/abstract\]/ism", $text, $results, PREG_SET_ORDER)) {
1958 foreach ($results AS $result) {
1959 $abstracts[strtolower($result[1])] = $result[2];
1963 if (isset($abstracts[$addon])) {
1964 $abstract = $abstracts[$addon];
1967 if ($abstract == '' && preg_match("/\[abstract\](.*?)\[\/abstract\]/ism", $text, $result)) {
1968 $abstract = $result[1];
1975 * Callback function to replace a Friendica style mention in a mention for Diaspora
1977 * @param array $match Matching values for the callback
1978 * [1] = Mention type (! or @)
1981 * @return string Replaced mention
1982 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1983 * @throws \ImagickException
1985 private static function bbCodeMention2DiasporaCallback($match)
1987 $contact = Contact::getByURL($match[3], false, ['addr']);
1988 if (empty($contact['addr'])) {
1992 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
1997 * Converts a BBCode text into Markdown
1999 * This function converts a BBCode item body to be sent to Markdown-enabled
2000 * systems like Diaspora and Libertree
2002 * @param string $text
2003 * @param bool $for_diaspora Diaspora requires more changes than Libertree
2005 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2007 public static function toMarkdown($text, $for_diaspora = true)
2009 $original_text = $text;
2011 // Since Diaspora is creating a summary for links, this function removes them before posting
2012 if ($for_diaspora) {
2013 $text = self::removeShareInformation($text);
2017 * Transform #tags, strip off the [url] and replace spaces with underscore
2019 $url_search_string = "^\[\]";
2020 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
2021 function ($matches) {
2022 return '#' . str_replace(' ', '_', $matches[2]);
2027 // Converting images with size parameters to simple images. Markdown doesn't know it.
2028 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
2030 // Convert it to HTML - don't try oembed
2031 if ($for_diaspora) {
2032 $text = self::convert($text, false, self::DIASPORA);
2034 // Add all tags that maybe were removed
2035 if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
2037 foreach ($tags[2] as $tag) {
2038 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
2039 if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
2040 $tagline .= '#' . $tag . ' ';
2043 $text = $text . " " . $tagline;
2046 $text = self::convert($text, false, self::CONNECTORS);
2049 // If a link is followed by a quote then there should be a newline before it
2050 // Maybe we should make this newline at every time before a quote.
2051 $text = str_replace(['</a><blockquote>'], ['</a><br><blockquote>'], $text);
2053 $stamp1 = microtime(true);
2055 // Now convert HTML to Markdown
2056 $text = HTML::toMarkdown($text);
2058 DI::profiler()->saveTimestamp($stamp1, "parser");
2060 // Libertree has a problem with escaped hashtags.
2061 $text = str_replace(['\#'], ['#'], $text);
2063 // Remove any leading or trailing whitespace, as this will mess up
2064 // the Diaspora signature verification and cause the item to disappear
2065 $text = trim($text);
2067 if ($for_diaspora) {
2068 $url_search_string = "^\[\]";
2069 $text = preg_replace_callback(
2070 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
2071 ['self', 'bbCodeMention2DiasporaCallback'],
2076 Hook::callAll('bb2diaspora', $text);
2082 * Pull out all #hashtags and @person tags from $string.
2084 * We also get @person@domain.com - which would make
2085 * the regex quite complicated as tags can also
2086 * end a sentence. So we'll run through our results
2087 * and strip the period from any tags which end with one.
2088 * Returns array of tags found, or empty array.
2090 * @param string $string Post content
2092 * @return array List of tag and person names
2094 public static function getTags($string)
2098 BBCode::performWithEscapedTags($string, ['noparse', 'pre', 'code'], function ($string) use (&$ret) {
2099 // Convert hashtag links to hashtags
2100 $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
2102 // Force line feeds at bbtags
2103 $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
2105 // ignore anything in a bbtag
2106 $string = preg_replace('/\[(.*?)\]/sm', '', $string);
2108 // Match full names against @tags including the space between first and last
2109 // We will look these up afterward to see if they are full names or not recognisable.
2111 if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
2112 foreach ($matches[1] as $match) {
2113 if (strstr($match, ']')) {
2114 // we might be inside a bbcode color tag - leave it alone
2118 if (substr($match, -1, 1) === '.') {
2119 $ret[] = substr($match, 0, -1);
2126 // Otherwise pull out single word tags. These can be @nickname, @first_last
2129 if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
2130 foreach ($matches[1] as $match) {
2131 if (strstr($match, ']')) {
2132 // we might be inside a bbcode color tag - leave it alone
2136 // ignore strictly numeric tags like #1
2137 if ((strpos($match, '#') === 0) && ctype_digit(substr($match, 1))) {
2141 // try not to catch url fragments
2142 if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
2151 return array_unique($ret);
2155 * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
2157 * @param string $text
2158 * @param array $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
2159 * @param callable $callback
2162 *@see Strings::performWithEscapedBlocks
2165 public static function performWithEscapedTags(string $text, array $tagList, callable $callback)
2167 $tagList = array_map('preg_quote', $tagList);
2169 return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
2173 * Replaces mentions in the provided message body for the provided user and network if any
2176 * @param $profile_uid
2179 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2180 * @throws \ImagickException
2182 public static function setMentions($body, $profile_uid = 0, $network = '')
2184 BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
2185 $tags = BBCode::getTags($body);
2190 foreach ($tags as $tag) {
2191 $tag_type = substr($tag, 0, 1);
2193 if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
2198 * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
2199 * Robert Johnson should be first in the $tags array
2201 foreach ($tagged as $nextTag) {
2202 if (stristr($nextTag, $tag . ' ')) {
2207 $success = Item::replaceTag($body, $inform, $profile_uid, $tag, $network);
2209 if ($success['replaced']) {
2221 * @param string $author Author display name
2222 * @param string $profile Author profile URL
2223 * @param string $avatar Author profile picture URL
2224 * @param string $link Post source URL
2225 * @param string $posted Post created date
2226 * @param string|null $guid Post guid (if any)
2228 * @TODO Rewrite to handle over whole record array
2230 public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null)
2232 $header = "[share author='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $author) .
2233 "' profile='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $profile) .
2234 "' avatar='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $avatar) .
2235 "' link='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $link) .
2236 "' posted='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $posted);
2239 $header .= "' guid='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $guid);