3 * @copyright Copyright (C) 2010-2021, 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\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;
52 // Update this value to the current date whenever changes are made to BBCode::convert
53 const VERSION = '2021-04-07';
62 const ACTIVITYPUB = 9;
65 * Fetches attachment data that were generated the old way
67 * @param string $body Message body
69 * 'type' -> Message type ('link', 'video', 'photo')
70 * 'text' -> Text before the shared message
71 * 'after' -> Text after the shared message
72 * 'image' -> Preview image of the message
73 * 'url' -> Url to the attached message
74 * 'title' -> Title of the attachment
75 * 'description' -> Description of the attachment
76 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
78 private static function getOldAttachmentData($body)
82 // Simplify image codes
83 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
85 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
86 foreach ($attached as $data) {
87 if (!in_array($data[1], ['type-link', 'type-video', 'type-photo'])) {
91 $post['type'] = substr($data[1], 5);
93 $pos = strpos($body, $data[0]);
95 $post['text'] = trim(substr($body, 0, $pos));
96 $post['after'] = trim(substr($body, $pos + strlen($data[0])));
98 $post['text'] = trim(str_replace($data[0], '', $body));
102 $attacheddata = $data[2];
104 if (preg_match("/\[img\](.*?)\[\/img\]/ism", $attacheddata, $matches)) {
106 $picturedata = Images::getInfoFromURLCached($matches[1]);
109 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
110 $post['image'] = $matches[1];
112 $post['preview'] = $matches[1];
117 if (preg_match("/\[bookmark\=(.*?)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
118 $post['url'] = $matches[1];
119 $post['title'] = $matches[2];
121 if (!empty($post['url']) && (in_array($post['type'], ['link', 'video']))
122 && preg_match("/\[url\=(.*?)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
123 $post['url'] = $matches[1];
126 // Search for description
127 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
128 $post['description'] = $matches[1];
136 * Fetches attachment data that were generated with the "attachment" element
138 * @param string $body Message body
140 * 'type' -> Message type ('link', 'video', 'photo')
141 * 'text' -> Text before the shared message
142 * 'after' -> Text after the shared message
143 * 'image' -> Preview image of the message
144 * 'url' -> Url to the attached message
145 * 'title' -> Title of the attachment
146 * 'description' -> Description of the attachment
147 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
149 public static function getAttachmentData($body)
158 'provider_name' => '',
159 'provider_url' => '',
164 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
165 return self::getOldAttachmentData($body);
168 $attributes = $match[2];
170 $data['text'] = trim($match[1]);
172 foreach (['type', 'url', 'title', 'image', 'preview', 'publisher_name', 'publisher_url', 'author_name', 'author_url'] as $field) {
173 preg_match('/' . preg_quote($field, '/') . '=("|\')(.*?)\1/ism', $attributes, $matches);
174 $value = $matches[2] ?? '';
178 case 'publisher_name':
179 $data['provider_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
181 case 'publisher_url':
182 $data['provider_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
185 $data['author_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
186 if ($data['provider_name'] == $data['author_name']) {
187 $data['author_name'] = '';
191 $data['author_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
192 if ($data['provider_url'] == $data['author_url']) {
193 $data['author_url'] = '';
197 $value = self::convert(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), false, true);
198 $value = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
199 $value = str_replace(['[', ']'], ['[', ']'], $value);
200 $data['title'] = $value;
202 $data[$field] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
208 if (!in_array($data['type'], ['link', 'audio', 'photo', 'video'])) {
212 $data['description'] = trim($match[3]);
214 $data['after'] = trim($match[4]);
216 $parts = parse_url($data['url']);
217 if (!empty($parts['scheme']) && !empty($parts['host'])) {
218 if (empty($data['provider_name'])) {
219 $data['provider_name'] = $parts['host'];
221 if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
222 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
224 if (!empty($parts['port'])) {
225 $data['provider_url'] .= ':' . $parts['port'];
233 public static function getAttachedData($body, $item = [])
237 - type: link, video, photo
245 $has_title = !empty($item['title']);
246 $plink = $item['plink'] ?? '';
247 $post = self::getAttachmentData($body);
249 // Get all linked images with alternative image description
250 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
251 foreach ($pictures as $picture) {
252 if (Photo::isLocal($picture[1])) {
253 $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => $picture[2]];
255 $post['remote_images'][] = ['url' => $picture[1], 'description' => $picture[2]];
258 if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
259 $post['image_description'] = $post['images'][0]['description'];
263 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
264 foreach ($pictures as $picture) {
265 if (Photo::isLocal($picture[1])) {
266 $post['images'][] = ['url' => str_replace('-1.', '-0.', $picture[1]), 'description' => ''];
268 $post['remote_images'][] = ['url' => $picture[1], 'description' => ''];
273 // if nothing is found, it maybe having an image.
274 if (!isset($post['type'])) {
275 // Simplify image codes
276 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
277 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
278 $post['text'] = $body;
280 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
281 if ((count($pictures) == 1) && !$has_title) {
282 if (!empty($item['object-type']) && ($item['object-type'] == Activity\ObjectType::IMAGE)) {
283 // Replace the preview picture with the real picture
284 $url = str_replace('-1.', '-0.', $pictures[0][2]);
285 $data = ['url' => $url, 'type' => 'photo'];
287 // Checking, if the link goes to a picture
288 $data = ParseUrl::getSiteinfoCached($pictures[0][1]);
292 // Sometimes photo posts to the own album are not detected at the start.
293 // So we seem to cannot use the cache for these cases. That's strange.
294 if (($data['type'] != 'photo') && strstr($pictures[0][1], "/photos/")) {
295 $data = ParseUrl::getSiteinfo($pictures[0][1]);
298 if ($data['type'] == 'photo') {
299 $post['type'] = 'photo';
300 if (isset($data['images'][0])) {
301 $post['image'] = $data['images'][0]['src'];
302 $post['url'] = $data['url'];
304 $post['image'] = $data['url'];
307 $post['preview'] = $pictures[0][2];
308 $post['text'] = trim(str_replace($pictures[0][0], '', $body));
310 $imgdata = Images::getInfoFromURLCached($pictures[0][1]);
311 if ($imgdata && substr($imgdata['mime'], 0, 6) == 'image/') {
312 $post['type'] = 'photo';
313 $post['image'] = $pictures[0][1];
314 $post['preview'] = $pictures[0][2];
315 $post['text'] = trim(str_replace($pictures[0][0], '', $body));
318 } elseif (count($pictures) > 0) {
319 $post['type'] = 'link';
320 $post['url'] = $plink;
321 $post['image'] = $pictures[0][2];
322 $post['text'] = $body;
324 foreach ($pictures as $picture) {
325 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
328 } elseif (preg_match_all("(\[img\](.*?)\[\/img\])ism", $body, $pictures, PREG_SET_ORDER)) {
330 $post['type'] = 'link';
331 $post['url'] = $plink;
333 $post['type'] = 'photo';
336 $post['image'] = $pictures[0][1];
337 $post['text'] = $body;
338 foreach ($pictures as $picture) {
339 $post['text'] = trim(str_replace($picture[0], '', $post['text']));
343 // Test for the external links
344 preg_match_all("(\[url\](.*?)\[\/url\])ism", $post['text'], $links1, PREG_SET_ORDER);
345 preg_match_all("(\[url\=(.*?)\].*?\[\/url\])ism", $post['text'], $links2, PREG_SET_ORDER);
347 $links = array_merge($links1, $links2);
349 // If there is only a single one, then use it.
350 // This should cover link posts via API.
351 if ((count($links) == 1) && !isset($post['preview']) && !$has_title) {
352 $post['type'] = 'link';
353 $post['url'] = $links[0][1];
356 // Simplify "video" element
357 $post['text'] = preg_replace('(\[video.*?\ssrc\s?=\s?([^\s\]]+).*?\].*?\[/video\])ism', '[video]$1[/video]', $post['text']);
359 // Now count the number of external media links
360 preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $post['text'], $links1, PREG_SET_ORDER);
361 preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $post['text'], $links2, PREG_SET_ORDER);
362 preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $post['text'], $links3, PREG_SET_ORDER);
363 preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $post['text'], $links4, PREG_SET_ORDER);
365 // Add them to the other external links
366 $links = array_merge($links, $links1, $links2, $links3, $links4);
368 // Are there more than one?
369 if (count($links) > 1) {
370 // The post will be the type "text", which means a blog post
371 unset($post['type']);
372 $post['url'] = $plink;
375 if (!isset($post['type'])) {
376 $post['type'] = "text";
377 $post['text'] = trim($body);
380 if (($post['type'] == 'photo') && empty($post['images']) && !empty($post['remote_images'])) {
381 $post['images'] = $post['remote_images'];
382 $post['image'] = $post['images'][0]['url'];
383 if (!empty($post['images']) && !empty($post['images'][0]['description'])) {
384 $post['image_description'] = $post['images'][0]['description'];
387 unset($post['remote_images']);
388 } elseif (isset($post['url']) && ($post['type'] == 'video')) {
389 $data = ParseUrl::getSiteinfoCached($post['url']);
391 if (isset($data['images'][0])) {
392 $post['image'] = $data['images'][0]['src'];
400 * Remove [attachment] BBCode and replaces it with a regular [url]
402 * @param string $body
403 * @param boolean $no_link_desc No link description
405 * @return string with replaced body
407 public static function removeAttachment($body, $no_link_desc = false)
409 return preg_replace_callback("/\s*\[attachment (.*)\](.*?)\[\/attachment\]\s*/ism",
410 function ($match) use ($no_link_desc) {
411 $attach_data = self::getAttachmentData($match[0]);
412 if (empty($attach_data['url'])) {
414 } elseif (empty($attach_data['title']) || $no_link_desc) {
415 return "\n[url]" . $attach_data['url'] . "[/url]\n";
417 return "\n[url=" . $attach_data['url'] . ']' . $attach_data['title'] . "[/url]\n";
423 * Converts a BBCode text into plaintext
426 * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
430 public static function toPlaintext($text, $keep_urls = true)
432 $naked_text = HTML::toPlaintext(self::convert($text, false, 0, true), 0, !$keep_urls);
437 private static function proxyUrl($image, $simplehtml = self::INTERNAL)
439 // Only send proxied pictures to API and for internal display
440 if (in_array($simplehtml, [self::INTERNAL, self::API])) {
441 return ProxyUtils::proxifyUrl($image);
448 * This function changing the visual size (not the real size) of images.
449 * The function does not work for pictures with an alternate text description.
450 * This could only be changed by using some new "img" BBCode format.
452 * @param string $srctext The body with images
453 * @return string The body with possibly scaled images
455 public static function scaleExternalImages(string $srctext)
459 // Simplify image links
460 $s = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $s);
463 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
465 foreach ($matches as $mtch) {
466 Logger::info('scale_external_image', ['image' => $mtch[1]]);
468 $hostname = str_replace('www.', '', substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3));
469 if (stristr($mtch[1], $hostname)) {
473 $curlResult = DI::httpRequest()->get($mtch[1]);
474 if (!$curlResult->isSuccess()) {
478 $i = $curlResult->getBody();
479 $type = $curlResult->getContentType();
480 $type = Images::getMimeTypeByData($i, $mtch[1], $type);
483 $Image = new Image($i, $type);
484 if ($Image->isValid()) {
485 $orig_width = $Image->getWidth();
486 $orig_height = $Image->getHeight();
488 if ($orig_width > 640 || $orig_height > 640) {
489 $Image->scaleDown(640);
490 $new_width = $Image->getWidth();
491 $new_height = $Image->getHeight();
492 Logger::info('External images scaled', ['orig_width' => $orig_width, 'new_width' => $new_width, 'orig_height' => $orig_height, 'new_height' => $new_height, 'match' => $mtch[0]]);
495 '[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
499 Logger::info('New string', ['image' => $s]);
510 * Truncates imported message body string length to max_import_size
512 * The purpose of this function is to apply system message length limits to
513 * imported messages without including any embedded photos in the length
515 * @param string $body
517 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
519 public static function limitBodySize($body)
521 $maxlen = DI::config()->get('config', 'max_import_size', 0);
523 // If the length of the body, including the embedded images, is smaller
524 // than the maximum, then don't waste time looking for the images
525 if ($maxlen && (strlen($body) > $maxlen)) {
527 Logger::info('the total body length exceeds the limit', ['maxlen' => $maxlen, 'body_len' => strlen($body)]);
533 $img_start = strpos($orig_body, '[img');
534 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
535 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
536 while (($img_st_close !== false) && ($img_end !== false)) {
538 $img_st_close++; // make it point to AFTER the closing bracket
539 $img_end += $img_start;
540 $img_end += strlen('[/img]');
542 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
543 // This is an embedded image
545 if (($textlen + $img_start) > $maxlen) {
546 if ($textlen < $maxlen) {
547 Logger::info('the limit happens before an embedded image');
548 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
552 $new_body = $new_body . substr($orig_body, 0, $img_start);
553 $textlen += $img_start;
556 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
559 if (($textlen + $img_end) > $maxlen) {
560 if ($textlen < $maxlen) {
561 Logger::info('the limit happens before the end of a non-embedded image');
562 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
566 $new_body = $new_body . substr($orig_body, 0, $img_end);
567 $textlen += $img_end;
570 $orig_body = substr($orig_body, $img_end);
572 if ($orig_body === false) {
573 // in case the body ends on a closing image tag
577 $img_start = strpos($orig_body, '[img');
578 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
579 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
582 if (($textlen + strlen($orig_body)) > $maxlen) {
583 if ($textlen < $maxlen) {
584 Logger::info('the limit happens after the end of the last image');
585 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
588 Logger::info('the text size with embedded images extracted did not violate the limit');
589 $new_body = $new_body . $orig_body;
599 * Processes [attachment] tags
601 * Note: Can produce a [bookmark] tag in the returned string
603 * @param string $text
604 * @param integer $simplehtml
605 * @param bool $tryoembed
607 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
609 private static function convertAttachment($text, $simplehtml = self::INTERNAL, $tryoembed = true)
611 $data = self::getAttachmentData($text);
612 if (empty($data) || empty($data['url'])) {
616 if (isset($data['title'])) {
617 $data['title'] = strip_tags($data['title']);
618 $data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
620 $data['title'] = null;
623 if (((strpos($data['text'], "[img=") !== false) || (strpos($data['text'], "[img]") !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
624 $data['preview'] = $data['image'];
630 if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
631 $return = OEmbed::getHTML($data['url'], $data['title']);
633 throw new Exception('OEmbed is disabled for this attachment.');
635 } catch (Exception $e) {
636 $data['title'] = ($data['title'] ?? '') ?: $data['url'];
638 if ($simplehtml != self::CONNECTORS) {
639 $return = sprintf('<div class="type-%s">', $data['type']);
642 if (!empty($data['title']) && !empty($data['url'])) {
643 if (!empty($data['image']) && empty($data['text']) && ($data['type'] == 'photo')) {
644 $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), $data['title']);
646 if (!empty($data['image'])) {
647 $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), $data['title']);
648 } elseif (!empty($data['preview'])) {
649 $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']);
651 $return .= sprintf('<h4><a href="%s">%s</a></h4>', $data['url'], $data['title']);
655 if (!empty($data['description']) && $data['description'] != $data['title']) {
656 // Sanitize the HTML by converting it to BBCode
657 $bbcode = HTML::toBBCode($data['description']);
658 $return .= sprintf('<blockquote>%s</blockquote>', trim(self::convert($bbcode)));
661 if (!empty($data['provider_url']) && !empty($data['provider_name'])) {
662 if (!empty($data['author_name'])) {
663 $return .= sprintf('<sup><a href="%s">%s (%s)</a></sup>', $data['provider_url'], $data['author_name'], $data['provider_name']);
665 $return .= sprintf('<sup><a href="%s">%s</a></sup>', $data['provider_url'], $data['provider_name']);
669 if ($simplehtml != self::CONNECTORS) {
674 return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
677 public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
679 $data = self::getAttachmentData($Text);
684 return $data['text'] . ($data['after'] ?? '');
687 $title = htmlentities($data['title'] ?? '', ENT_QUOTES, 'UTF-8', false);
688 $text = htmlentities($data['text'], ENT_QUOTES, 'UTF-8', false);
689 if ($plaintext || (($title != '') && strstr($text, $title))) {
690 $data['title'] = $data['url'];
691 } elseif (($text != '') && strstr($title, $text)) {
692 $data['text'] = $data['title'];
693 $data['title'] = $data['url'];
696 if (empty($data['text']) && !empty($data['title']) && empty($data['url'])) {
697 return $data['title'] . $data['after'];
700 // If the link already is included in the post, don't add it again
701 if (!empty($data['url']) && strpos($data['text'], $data['url'])) {
702 return $data['text'] . $data['after'];
705 $text = $data['text'];
707 if (!empty($data['url']) && !empty($data['title'])) {
708 $text .= "\n[url=" . $data['url'] . ']' . $data['title'] . '[/url]';
709 } elseif (!empty($data['url'])) {
710 $text .= "\n[url]" . $data['url'] . '[/url]';
713 return $text . "\n" . $data['after'];
717 * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
719 * @param array $match Array with the matching values
720 * @return string reformatted link including HTML codes
722 private static function convertUrlForActivityPubCallback($match)
726 if (isset($match[2]) && ($match[1] != $match[2])) {
730 $parts = parse_url($url);
731 if (!isset($parts['scheme'])) {
735 return self::convertUrlForActivityPub($url);
739 * Converts [url] BBCodes in a format that looks fine on ActivityPub systems.
741 * @param string $url URL that is about to be reformatted
742 * @return string reformatted link including HTML codes
744 private static function convertUrlForActivityPub($url)
746 $html = '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>';
747 return sprintf($html, $url, self::getStyledURL($url));
751 * Converts an URL in a nicer format (without the scheme and possibly shortened)
753 * @param string $url URL that is about to be reformatted
754 * @return string reformatted link
756 private static function getStyledURL($url)
758 $parts = parse_url($url);
759 $scheme = $parts['scheme'] . '://';
760 $styled_url = str_replace($scheme, '', $url);
762 if (strlen($styled_url) > 30) {
763 $styled_url = substr($styled_url, 0, 30) . "…";
770 * [noparse][i]italic[/i][/noparse] turns into
771 * [noparse][ i ]italic[ /i ][/noparse],
772 * to hide them from parser.
774 private static function escapeNoparseCallback($match)
776 $whole_match = $match[0];
777 $captured = $match[1];
778 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
779 $new_str = str_replace($captured, $spacefied, $whole_match);
784 * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
785 * now turns back and the [noparse] tags are trimed
786 * returning [i]italic[/i]
788 private static function unescapeNoparseCallback($match)
790 $captured = $match[1];
791 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
796 * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
799 * @param string $text Text to search
800 * @param string $name Tag name
801 * @param int $occurrences Number of first occurrences to skip
802 * @return boolean|array
804 public static function getTagPosition($text, $name, $occurrences = 0)
806 if ($occurrences < 0) {
811 for ($i = 0; $i <= $occurrences; $i++) {
812 if ($start_open !== false) {
813 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
817 if ($start_open === false) {
821 $start_equal = strpos($text, '=', $start_open);
822 $start_close = strpos($text, ']', $start_open);
824 if ($start_close === false) {
830 $end_open = strpos($text, '[/' . $name . ']', $start_close);
832 if ($end_open === false) {
838 'open' => $start_open,
839 'close' => $start_close
843 'close' => $end_open + strlen('[/' . $name . ']')
847 if ($start_equal !== false) {
848 $res['start']['equal'] = $start_equal + 1;
855 * Performs a preg_replace within the boundaries of all named BBCode tags in a text
857 * @param string $pattern Preg pattern string
858 * @param string $replace Preg replace string
859 * @param string $name BBCode tag name
860 * @param string $text Text to search
863 public static function pregReplaceInTag($pattern, $replace, $name, $text)
866 $pos = self::getTagPosition($text, $name, $occurrences);
867 while ($pos !== false && $occurrences++ < 1000) {
868 $start = substr($text, 0, $pos['start']['open']);
869 $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
870 $end = substr($text, $pos['end']['close']);
871 if ($end === false) {
875 $subject = preg_replace($pattern, $replace, $subject);
876 $text = $start . $subject . $end;
878 $pos = self::getTagPosition($text, $name, $occurrences);
884 private static function extractImagesFromItemBody($body)
891 $img_start = strpos($orig_body, '[img');
892 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
893 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
894 while (($img_st_close !== false) && ($img_end !== false)) {
895 $img_st_close++; // make it point to AFTER the closing bracket
896 $img_end += $img_start;
898 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
899 // This is an embedded image
900 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
901 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
905 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
908 $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
910 if ($orig_body === false) {
911 // in case the body ends on a closing image tag
915 $img_start = strpos($orig_body, '[img');
916 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
917 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
920 $new_body = $new_body . $orig_body;
922 return ['body' => $new_body, 'images' => $saved_image];
925 private static function interpolateSavedImagesIntoItemBody($body, array $images)
930 foreach ($images as $image) {
931 // We're depending on the property of 'foreach' (specified on the PHP website) that
932 // it loops over the array starting from the first element and going sequentially
933 // to the last element
934 $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
935 '<img src="' . self::proxyUrl($image) . '" alt="' . DI::l10n()->t('Image/photo') . '" />', $newbody);
943 * This function converts a [share] block to text according to a provided callback function whose signature is:
945 * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
948 * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
950 * - $author_contact is a contact record array
951 * - $content is the inner content of the [share] block
952 * - $is_quote_share indicates whether there's any content before the [share] block
953 * - Return value is the string that should replace the [share] block in the provided text
955 * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
957 * @param string $text A BBCode string
958 * @param callable $callback
959 * @return string The BBCode string with all [share] blocks replaced
961 public static function convertShare($text, callable $callback)
963 $return = preg_replace_callback(
964 "/(.*?)\[share(.*?)\](.*)\[\/share\]/ism",
965 function ($match) use ($callback) {
966 $attribute_string = $match[2];
968 foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid'] as $field) {
969 preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
970 $attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
973 $author_contact = Contact::getByURL($attributes['profile'], false, ['url', 'addr', 'name', 'micro']);
974 $author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
975 $author_contact['addr'] = ($author_contact['addr'] ?? '') ?: Protocol::getAddrFromProfileUrl($attributes['profile']);
977 $attributes['author'] = ($author_contact['name'] ?? '') ?: $attributes['author'];
978 $attributes['avatar'] = ($author_contact['micro'] ?? '') ?: $attributes['avatar'];
979 $attributes['profile'] = ($author_contact['url'] ?? '') ?: $attributes['profile'];
981 if ($attributes['avatar']) {
982 $attributes['avatar'] = ProxyUtils::proxifyUrl($attributes['avatar'], false, ProxyUtils::SIZE_THUMB);
985 $content = preg_replace(Strings::autoLinkRegEx(), '<a href="$1">$1</a>', $match[3]);
987 return $match[1] . $callback($attributes, $author_contact, $content, trim($match[1]) != '');
996 * Default [share] tag conversion callback
998 * Note: Can produce a [bookmark] tag in the output
1000 * @see BBCode::convertShare()
1001 * @param array $attributes [share] block attribute values
1002 * @param array $author_contact Contact row of the shared author
1003 * @param string $content Inner content of the [share] block
1004 * @param boolean $is_quote_share Whether there is content before the [share] block
1005 * @param integer $simplehtml Mysterious integer value depending on the target network/formatting style
1007 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1009 private static function convertShareCallback(array $attributes, array $author_contact, $content, $is_quote_share, $simplehtml)
1011 $mention = Protocol::formatMention($attributes['profile'], $attributes['author']);
1013 switch ($simplehtml) {
1015 $text = ($is_quote_share? '<br>' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n" . $content;
1017 case self::DIASPORA:
1018 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
1019 $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
1021 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
1023 if (!empty($attributes['posted']) && !empty($attributes['link'])) {
1024 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
1027 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
1029 if (empty($attributes['posted']) && !empty($attributes['link'])) {
1030 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
1035 case self::CONNECTORS:
1036 $headline = '<p><b>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8');
1037 $headline .= DI::l10n()->t('<a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
1038 $headline .= ':</b></p>' . "\n";
1040 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content">' . trim($content) . '</blockquote>' . "\n";
1044 $text = ($is_quote_share? '<br>' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
1046 case self::ACTIVITYPUB:
1047 $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>';
1048 $text = '<div><a href="' . $attributes['link'] . '">' . html_entity_decode('♲', ENT_QUOTES, 'UTF-8') . '</a> ' . $author . '<blockquote>' . $content . '</blockquote></div>' . "\n";
1051 $text = ($is_quote_share? "\n" : '');
1053 $contact = Contact::getByURL($attributes['profile'], false, ['network']);
1054 $network = $contact['network'] ?? Protocol::PHANTOM;
1056 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
1057 $text .= Renderer::replaceMacros($tpl, [
1058 '$profile' => $attributes['profile'],
1059 '$avatar' => $attributes['avatar'],
1060 '$author' => $attributes['author'],
1061 '$link' => $attributes['link'],
1062 '$link_title' => DI::l10n()->t('link to source'),
1063 '$posted' => $attributes['posted'],
1064 '$guid' => $attributes['guid'],
1065 '$network_name' => ContactSelector::networkToName($network, $attributes['profile']),
1066 '$network_icon' => ContactSelector::networkToIcon($network, $attributes['profile']),
1067 '$content' => self::setMentions(trim($content), 0, $network),
1075 private static function removePictureLinksCallback($match)
1077 $cache_key = 'remove:' . $match[1];
1078 $text = DI::cache()->get($cache_key);
1080 if (is_null($text)) {
1083 $stamp1 = microtime(true);
1085 $ch = @curl_init($match[1]);
1086 @curl_setopt($ch, CURLOPT_NOBODY, true);
1087 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1088 @curl_setopt($ch, CURLOPT_USERAGENT, DI::httpRequest()->getUserAgent());
1090 $curl_info = @curl_getinfo($ch);
1092 DI::profiler()->saveTimestamp($stamp1, "network");
1094 if (substr($curl_info['content_type'], 0, 6) == 'image/') {
1095 $text = "[url=" . $match[1] . ']' . $match[1] . "[/url]";
1097 $text = "[url=" . $match[2] . ']' . $match[2] . "[/url]";
1099 // if its not a picture then look if its a page that contains a picture link
1100 $body = DI::httpRequest()->fetch($match[1]);
1102 DI::cache()->set($cache_key, $text);
1106 $doc = new DOMDocument();
1107 @$doc->loadHTML($body);
1108 $xpath = new DOMXPath($doc);
1109 $list = $xpath->query("//meta[@name]");
1110 foreach ($list as $node) {
1113 if ($node->attributes->length) {
1114 foreach ($node->attributes as $attribute) {
1115 $attr[$attribute->name] = $attribute->value;
1119 if (strtolower($attr['name']) == 'twitter:image') {
1120 $text = '[url=' . $attr['content'] . ']' . $attr['content'] . '[/url]';
1124 DI::cache()->set($cache_key, $text);
1130 private static function expandLinksCallback($match)
1132 if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1133 return ($match[1] . "[url]" . $match[2] . "[/url]");
1135 return ($match[1] . $match[3] . " [url]" . $match[2] . "[/url]");
1139 private static function cleanPictureLinksCallback($match)
1141 // When the picture link is the own photo path then we can avoid fetching the link
1142 $own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()->get()) . '/photos/');
1143 if (preg_match('|' . $own_photo_url . '.*?/image/|', Strings::normaliseLink($match[1]))) {
1144 if (!empty($match[3])) {
1145 $text = '[img=' . str_replace('-1.', '-0.', $match[2]) . ']' . $match[3] . '[/img]';
1147 $text = '[img]' . str_replace('-1.', '-0.', $match[2]) . '[/img]';
1152 $cache_key = 'clean:' . $match[1];
1153 $text = DI::cache()->get($cache_key);
1154 if (!is_null($text)) {
1158 // Only fetch the header, not the content
1159 $stamp1 = microtime(true);
1161 $ch = @curl_init($match[1]);
1162 @curl_setopt($ch, CURLOPT_NOBODY, true);
1163 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1164 @curl_setopt($ch, CURLOPT_USERAGENT, DI::httpRequest()->getUserAgent());
1166 $curl_info = @curl_getinfo($ch);
1168 DI::profiler()->saveTimestamp($stamp1, "network");
1170 // if its a link to a picture then embed this picture
1171 if (substr($curl_info['content_type'], 0, 6) == 'image/') {
1172 $text = '[img]' . $match[1] . '[/img]';
1174 if (!empty($match[3])) {
1175 $text = '[img=' . $match[2] . ']' . $match[3] . '[/img]';
1177 $text = '[img]' . $match[2] . '[/img]';
1180 // if its not a picture then look if its a page that contains a picture link
1181 $body = DI::httpRequest()->fetch($match[1]);
1183 DI::cache()->set($cache_key, $text);
1187 $doc = new DOMDocument();
1188 @$doc->loadHTML($body);
1189 $xpath = new DOMXPath($doc);
1190 $list = $xpath->query("//meta[@name]");
1191 foreach ($list as $node) {
1193 if ($node->attributes->length) {
1194 foreach ($node->attributes as $attribute) {
1195 $attr[$attribute->name] = $attribute->value;
1199 if (strtolower($attr['name']) == "twitter:image") {
1200 if (!empty($match[3])) {
1201 $text = "[img=" . $attr['content'] . "]" . $match[3] . "[/img]";
1203 $text = "[img]" . $attr['content'] . "[/img]";
1208 DI::cache()->set($cache_key, $text);
1213 public static function cleanPictureLinks($text)
1215 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1216 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $return);
1220 public static function removeLinks(string $bbcode)
1222 $bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
1223 $bbcode = preg_replace("/\[img.*?\[\/img\]/ism", ' ', $bbcode);
1225 $bbcode = preg_replace('/[@!#]\[url\=.*?\].*?\[\/url\]/ism', '', $bbcode);
1226 $bbcode = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $bbcode);
1227 $bbcode = preg_replace('/[@!#]?\[url.*?\[\/url\]/ism', '', $bbcode);
1232 * Converts a BBCode message to HTML message
1234 * BBcode 2 HTML was written by WAY2WEB.net
1235 * extended to work with Mistpark/Friendica - Mike Macgirvin
1237 * Simple HTML values meaning:
1238 * - 0: Friendica display
1240 * - 2: Used for Windows Phone push, Friendica API
1241 * - 3: Used before converting to Markdown in bb2diaspora.php
1242 * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1245 * - 7: Used for dfrn, OStatus
1246 * - 8: Used for Twitter, WP backlink text setting
1249 * @param string $text
1250 * @param bool $try_oembed
1251 * @param int $simple_html
1252 * @param bool $for_plaintext
1254 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1256 public static function convert(string $text = null, $try_oembed = true, $simple_html = self::INTERNAL, $for_plaintext = false)
1258 // Accounting for null default column values
1259 if (is_null($text) || $text === '') {
1263 Hook::callAll('bbcode', $text);
1267 $text = self::performWithEscapedTags($text, ['code'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a) {
1268 $text = self::performWithEscapedTags($text, ['noparse', 'nobb', 'pre'], function ($text) use ($try_oembed, $simple_html, $for_plaintext, $a) {
1270 * preg_match_callback function to replace potential Oembed tags with Oembed content
1272 * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1274 * $match[2] = $title or absent
1276 $try_oembed_callback = function ($match)
1279 $title = $match[2] ?? null;
1282 $return = OEmbed::getHTML($url, $title);
1283 } catch (Exception $ex) {
1284 $return = $match[0];
1290 // Remove the abstract element. It is a non visible element.
1291 $text = self::stripAbstract($text);
1293 // Line ending normalisation
1294 $text = str_replace("\r\n", "\n", $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 // Remove linefeeds inside of the table elements. See issue #6799
1330 $search = ["\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1331 "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1332 "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1333 "\n[hr]", "[hr]\n", " [hr]", "[hr] ",
1334 "\n[attachment ", " [attachment ", "\n[/attachment]", "[/attachment]\n", " [/attachment]", "[/attachment] ",
1335 "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] "];
1336 $replace = ["[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1337 "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1338 "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1339 "[hr]", "[hr]", "[hr]", "[hr]",
1340 "[attachment ", "[attachment ", "[/attachment]", "[/attachment]", "[/attachment]", "[/attachment]",
1341 "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]"];
1344 $text = str_replace($search, $replace, $text);
1345 } while ($oldtext != $text);
1347 // Replace these here only once
1348 $search = ["\n[table]", "[/table]\n"];
1349 $replace = ["[table]", "[/table]"];
1350 $text = str_replace($search, $replace, $text);
1352 // Trim new lines regardless of the system.remove_multiplicated_lines config value
1353 $text = trim($text, "\n");
1355 // removing multiplicated newlines
1356 if (DI::config()->get('system', 'remove_multiplicated_lines')) {
1357 $search = ["\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[*]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
1358 "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1359 $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[*]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1360 "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1363 $text = str_replace($search, $replace, $text);
1364 } while ($oldtext != $text);
1367 // Add HTML new lines
1368 $text = str_replace("\n", '<br>', $text);
1370 /// @todo Have a closer look at the different html modes
1371 // Handle attached links or videos
1372 if ($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 $nosmile = strpos($text, '[nosmile]') !== false;
1381 $text = str_replace('[nosmile]', '', $text);
1383 // Replace non graphical smilies for external posts
1384 if (!$nosmile && !$for_plaintext) {
1385 $text = self::performWithEscapedTags($text, ['img'], function ($text) {
1386 return Smilies::replace($text);
1390 // leave open the posibility of [map=something]
1391 // this is replaced in Item::prepareBody() which has knowledge of the item location
1392 if (strpos($text, '[/map]') !== false) {
1393 $text = preg_replace_callback(
1394 "/\[map\](.*?)\[\/map\]/ism",
1395 function ($match) use ($simple_html) {
1396 return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1402 if (strpos($text, '[map=') !== false) {
1403 $text = preg_replace_callback(
1404 "/\[map=(.*?)\]/ism",
1405 function ($match) use ($simple_html) {
1406 return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1412 if (strpos($text, '[map]') !== false) {
1413 $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1416 // Check for headers
1417 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1418 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1419 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1420 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1421 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1422 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
1424 // Check for paragraph
1425 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1427 // Check for bold text
1428 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1430 // Check for Italics text
1431 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1433 // Check for Underline text
1434 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1436 // Check for strike-through text
1437 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1439 // Check for over-line text
1440 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1442 // Check for colored text
1443 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1445 // Check for sized text
1446 // [size=50] --> font-size: 50px (with the unit).
1447 if ($simple_html != self::DIASPORA) {
1448 $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1px;line-height:normal;">$2</span>', $text);
1449 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", '<span style="font-size:$1;line-height:normal;">$2</span>', $text);
1451 // Issue 2199: Diaspora doesn't interpret the construct above, nor the <small> or <big> element
1452 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "$2", $text);
1456 // Check for centered text
1457 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", '<div style="text-align:center;">$1</div>', $text);
1459 // Check for list text
1460 $text = str_replace("[*]", "<li>", $text);
1462 // Check for style sheet commands
1463 $text = preg_replace("(\[style=(.*?)\](.*?)\[\/style\])ism", '<span style="$1">$2</span>', $text);
1465 // Check for CSS classes
1466 $text = preg_replace("(\[class=(.*?)\](.*?)\[\/class\])ism", '<span class="$1">$2</span>', $text);
1468 // handle nested lists
1471 while ((((strpos($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", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1476 $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1477 $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1478 $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1479 $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1480 $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1481 $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1482 $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1483 $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $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", '<table>$1</table>', $text);
1492 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1493 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1495 $text = str_replace('[hr]', '<hr />', $text);
1497 if (!$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("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1522 '<details class="spoiler"><summary>$1</summary>$2</details>',
1526 // Declare the format for [quote] layout
1527 $QuoteLayout = '<blockquote>$1</blockquote>';
1529 // Check for [quote] text
1530 // handle nested quotes
1532 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1533 $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1536 // Check for [quote=Author] text
1538 $t_wrote = DI::l10n()->t('$1 wrote:');
1540 // handle nested quotes
1542 while ((strpos($text, "[/quote]")!== false) && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1543 $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1544 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1549 // [img=widthxheight]image source[/img]
1550 $text = preg_replace_callback(
1551 "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1552 function ($matches) use ($simple_html) {
1553 if (strpos($matches[3], "data:image/") === 0) {
1557 $matches[3] = self::proxyUrl($matches[3], $simple_html);
1558 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1563 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1564 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1566 $text = preg_replace_callback("/\[img\=(.*?)\](.*?)\[\/img\]/ism",
1567 function ($matches) use ($simple_html) {
1568 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1569 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1570 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '" title="' . $matches[2] . '">';
1575 // [img]pathtoimage[/img]
1576 $text = preg_replace_callback(
1577 "/\[img\](.*?)\[\/img\]/ism",
1578 function ($matches) use ($simple_html) {
1579 if (strpos($matches[1], "data:image/") === 0) {
1583 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1584 return "[img]" . $matches[1] . "[/img]";
1589 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1590 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . DI::l10n()->t('Image/photo') . '" />', $text);
1592 $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);
1593 $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>', $text);
1594 //$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);
1596 // Simplify "video" element
1597 $text = preg_replace('(\[video[^\]]*?\ssrc\s?=\s?([^\s\]]+)[^\]]*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
1600 // html5 video and audio
1601 $text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism",
1602 '<video src="$1" controls width="100%" height="auto"><a href="$1">$1</a></video>', $text);
1604 $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1605 $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1607 $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1608 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1609 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism", '<audio src="$1" controls><a href="$1">$1</a></audio>', $text);
1611 $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1612 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1613 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1614 '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1617 // Backward compatibility, [iframe] support has been removed in version 2020.12
1618 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1620 // Youtube extensions
1622 $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1623 $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1624 $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1627 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1628 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1629 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1632 $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);
1634 $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1635 '<a href="https://www.youtube.com/watch?v=$1" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=$1</a>', $text);
1639 $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1640 $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1643 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1644 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1647 $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);
1649 $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1650 '<a href="https://vimeo.com/$1" target="_blank" rel="noopener noreferrer">https://vimeo.com/$1</a>', $text);
1654 $text = OEmbed::BBCode2HTML($text);
1656 // Avoid triple linefeeds through oembed
1657 $text = str_replace("<br style='clear:left'></span><br><br>", "<br style='clear:left'></span><br>", $text);
1659 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1660 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1661 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1662 // start which is always required). Allow desc with a missing summary for compatibility.
1664 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1665 $sub = Event::getHTML($ev, $simple_html);
1667 $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1668 $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1669 $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1670 $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1671 $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1672 $text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism", '', $text);
1673 $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1676 if (!$for_plaintext && DI::config()->get('system', 'big_emojis') && ($simple_html != self::DIASPORA)) {
1677 $conv = html_entity_decode(str_replace([' ', "\n", "\r"], '', $text));
1678 // Emojis are always 4 byte Unicode characters
1679 if (!empty($conv) && (strlen($conv) / mb_strlen($conv) == 4)) {
1680 $text = '<span style="font-size: xx-large; line-height: normal;">' . $text . '</span>';
1684 if (!$for_plaintext) {
1685 if (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1686 $text = preg_replace_callback("/\[url\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1687 $text = preg_replace_callback("/\[url\=(.*?)\](.*?)\[\/url\]/ism", 'self::convertUrlForActivityPubCallback', $text);
1690 $text = preg_replace("(\[url\](.*?)\[\/url\])ism", " $1 ", $text);
1691 $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
1694 // Remove all hashtag addresses
1695 if ($simple_html && !in_array($simple_html, [self::DIASPORA, self::OSTATUS, self::ACTIVITYPUB])) {
1696 $text = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $text);
1697 } elseif ($simple_html == self::DIASPORA) {
1698 // The ! is converted to @ since Diaspora only understands the @
1699 $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1700 '@<a href="$2">$3</a>',
1702 } elseif (in_array($simple_html, [self::OSTATUS, self::ACTIVITYPUB])) {
1703 $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1704 '$1<span class="vcard"><a href="$2" class="url u-url mention" title="$3"><span class="fn nickname mention">$3</span></a></span>',
1706 } elseif (!$simple_html) {
1707 $text = preg_replace("/([@!])\[url\=(.*?)\](.*?)\[\/url\]/ism",
1708 '$1<a href="$2" class="userinfo mention" title="$3">$3</a>',
1712 // Bookmarks in red - will be converted to bookmarks in friendica
1713 $text = preg_replace("/#\^\[url\](.*?)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1714 $text = preg_replace("/#\^\[url\=(.*?)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1715 $text = preg_replace("/#\[url\=.*?\]\^\[\/url\]\[url\=(.*?)\](.*?)\[\/url\]/i",
1716 "[bookmark=$1]$2[/bookmark]", $text);
1718 if (in_array($simple_html, [self::API, self::OSTATUS, self::TWITTER])) {
1719 $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
1720 //$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
1721 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$text);
1724 // Perform URL Search
1726 $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1729 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1731 // Handle Diaspora posts
1732 $text = preg_replace_callback(
1733 "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1735 return "[url=" . DI::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
1739 $text = preg_replace_callback(
1740 "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
1742 return "[url=" . DI::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
1746 // Server independent link to posts and comments
1747 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
1748 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1749 $text = preg_replace($expression, DI::baseUrl()."/display/$1", $text);
1753 * - #[url=<anything>]<term>[/url]
1754 * - [url=<anything>]#<term>[/url]
1756 $text = preg_replace_callback("/(?:#\[url\=[^\[\]]*\]|\[url\=[^\[\]]*\]#)(.*?)\[\/url\]/ism", function($matches) use ($simple_html) {
1757 if ($simple_html == BBCode::ACTIVITYPUB) {
1758 return '<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1759 . '" data-tag="' . XML::escape($matches[1]) . '" rel="tag ugc">#'
1760 . XML::escape($matches[1]) . '</a>';
1762 return '#<a href="' . DI::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1763 . '" class="tag" rel="tag" title="' . XML::escape($matches[1]) . '">'
1764 . XML::escape($matches[1]) . '</a>';
1768 // We need no target="_blank" rel="noopener noreferrer" for local links
1769 // convert links start with DI::baseUrl() as local link without the target="_blank" rel="noopener noreferrer" attribute
1770 $escapedBaseUrl = preg_quote(DI::baseUrl(), '/');
1771 $text = preg_replace("/\[url\](".$escapedBaseUrl.".*?)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
1772 $text = preg_replace("/\[url\=(".$escapedBaseUrl.".*?)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
1774 $text = preg_replace("/\[url\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $text);
1775 $text = preg_replace("/\[url\=(.*?)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
1777 // Red compatibility, though the link can't be authenticated on Friendica
1778 $text = preg_replace("/\[zrl\=(.*?)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank" rel="noopener noreferrer">$2</a>', $text);
1781 // we may need to restrict this further if it picks up too many strays
1782 // link acct:user@host to a webfinger profile redirector
1784 $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);
1786 // Perform MAIL Search
1787 $text = preg_replace("/\[mail\](.*?)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
1788 $text = preg_replace("/\[mail\=(.*?)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
1790 /// @todo What is the meaning of these lines?
1791 $text = preg_replace('/\[\&\;([#a-z0-9]+)\;\]/', '&$1;', $text);
1792 $text = preg_replace('/\&\#039\;/', '\'', $text);
1794 // Currently deactivated, it made problems with " inside of alt texts.
1795 //$text = preg_replace('/\"\;/', '"', $text);
1797 // fix any escaped ampersands that may have been converted into links
1798 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
1800 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
1801 $allowed_src_protocols = ['//', 'http://', 'https://', 'redir/', 'cid:'];
1803 array_walk($allowed_src_protocols, function(&$value) { $value = preg_quote($value, '#');});
1805 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
1806 '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . DI::l10n()->t('Invalid source protocol') . '">', $text);
1808 // sanitize href attributes (only allowlisted protocols URLs)
1809 // default value for backward compatibility
1810 $allowed_link_protocols = DI::config()->get('system', 'allowed_link_protocols', []);
1812 // Always allowed protocol even if config isn't set or not including it
1813 $allowed_link_protocols[] = '//';
1814 $allowed_link_protocols[] = 'http://';
1815 $allowed_link_protocols[] = 'https://';
1816 $allowed_link_protocols[] = 'redir/';
1818 array_walk($allowed_link_protocols, function(&$value) { $value = preg_quote($value, '#');});
1820 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
1821 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . DI::l10n()->t('Invalid link protocol') . '">', $text);
1824 $text = self::convertShare(
1826 function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
1827 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
1831 $text = self::interpolateSavedImagesIntoItemBody($text, $saved_image);
1834 }); // Escaped noparse, nobb, pre
1836 // Remove escaping tags and replace new lines that remain
1837 $text = preg_replace_callback('/\[(noparse|nobb)](.*?)\[\/\1]/ism', function ($match) {
1838 return str_replace("\n", "<br>", $match[2]);
1841 // Additionally, [pre] tags preserve spaces
1842 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", function ($match) {
1843 return str_replace([' ', "\n"], [' ', "<br>"], htmlentities($match[1], ENT_NOQUOTES,'UTF-8'));
1849 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
1850 function ($matches) {
1851 if (strpos($matches[2], "\n") !== false) {
1852 $return = '<pre><code class="language-' . trim($matches[1]) . '">' . htmlentities(trim($matches[2], "\n\r"), ENT_NOQUOTES, 'UTF-8') . '</code></pre>';
1854 $return = '<code>' . htmlentities($matches[2], ENT_NOQUOTES, 'UTF-8') . '</code>';
1862 // Default iframe allowed domains/path
1863 $allowedIframeDomains = [
1864 DI::baseUrl()->getHostname()
1865 . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : '')
1866 . '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
1867 'www.youtube.com/embed/',
1868 'player.vimeo.com/video/',
1871 $allowedIframeDomains = array_merge(
1872 $allowedIframeDomains,
1873 DI::config()->get('system', 'allowed_oembed') ?
1874 explode(',', DI::config()->get('system', 'allowed_oembed'))
1878 $text = HTML::purify($text, $allowedIframeDomains);
1884 * Strips the "abstract" tag from the provided text
1886 * @param string $text The text with BBCode
1887 * @return string The same text - but without "abstract" element
1889 public static function stripAbstract($text)
1891 $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", '', $text);
1892 $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", '', $text);
1898 * Returns the value of the "abstract" element
1900 * @param string $text The text that maybe contains the element
1901 * @param string $addon The addon for which the abstract is meant for
1902 * @return string The abstract
1904 public static function getAbstract($text, $addon = '')
1908 $addon = strtolower($addon);
1910 if (preg_match_all("/\[abstract=(.*?)\](.*?)\[\/abstract\]/ism", $text, $results, PREG_SET_ORDER)) {
1911 foreach ($results AS $result) {
1912 $abstracts[strtolower($result[1])] = $result[2];
1916 if (isset($abstracts[$addon])) {
1917 $abstract = $abstracts[$addon];
1920 if ($abstract == '' && preg_match("/\[abstract\](.*?)\[\/abstract\]/ism", $text, $result)) {
1921 $abstract = $result[1];
1928 * Callback function to replace a Friendica style mention in a mention for Diaspora
1930 * @param array $match Matching values for the callback
1931 * [1] = Mention type (! or @)
1934 * @return string Replaced mention
1935 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1936 * @throws \ImagickException
1938 private static function bbCodeMention2DiasporaCallback($match)
1940 $contact = Contact::getByURL($match[3], false, ['addr']);
1941 if (empty($contact['addr'])) {
1945 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
1950 * Converts a BBCode text into Markdown
1952 * This function converts a BBCode item body to be sent to Markdown-enabled
1953 * systems like Diaspora and Libertree
1955 * @param string $text
1956 * @param bool $for_diaspora Diaspora requires more changes than Libertree
1958 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1960 public static function toMarkdown($text, $for_diaspora = true)
1962 $original_text = $text;
1964 // Since Diaspora is creating a summary for links, this function removes them before posting
1965 if ($for_diaspora) {
1966 $text = self::removeShareInformation($text);
1970 * Transform #tags, strip off the [url] and replace spaces with underscore
1972 $url_search_string = "^\[\]";
1973 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
1974 function ($matches) {
1975 return '#' . str_replace(' ', '_', $matches[2]);
1980 // Converting images with size parameters to simple images. Markdown doesn't know it.
1981 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
1983 // Convert it to HTML - don't try oembed
1984 if ($for_diaspora) {
1985 $text = self::convert($text, false, self::DIASPORA);
1987 // Add all tags that maybe were removed
1988 if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
1990 foreach ($tags[2] as $tag) {
1991 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
1992 if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
1993 $tagline .= '#' . $tag . ' ';
1996 $text = $text . " " . $tagline;
1999 $text = self::convert($text, false, self::CONNECTORS);
2002 // If a link is followed by a quote then there should be a newline before it
2003 // Maybe we should make this newline at every time before a quote.
2004 $text = str_replace(['</a><blockquote>'], ['</a><br><blockquote>'], $text);
2006 $stamp1 = microtime(true);
2008 // Now convert HTML to Markdown
2009 $text = HTML::toMarkdown($text);
2011 DI::profiler()->saveTimestamp($stamp1, "parser");
2013 // Libertree has a problem with escaped hashtags.
2014 $text = str_replace(['\#'], ['#'], $text);
2016 // Remove any leading or trailing whitespace, as this will mess up
2017 // the Diaspora signature verification and cause the item to disappear
2018 $text = trim($text);
2020 if ($for_diaspora) {
2021 $url_search_string = "^\[\]";
2022 $text = preg_replace_callback(
2023 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
2024 ['self', 'bbCodeMention2DiasporaCallback'],
2029 Hook::callAll('bb2diaspora', $text);
2035 * Pull out all #hashtags and @person tags from $string.
2037 * We also get @person@domain.com - which would make
2038 * the regex quite complicated as tags can also
2039 * end a sentence. So we'll run through our results
2040 * and strip the period from any tags which end with one.
2041 * Returns array of tags found, or empty array.
2043 * @param string $string Post content
2045 * @return array List of tag and person names
2047 public static function getTags($string)
2051 BBCode::performWithEscapedTags($string, ['noparse', 'pre', 'code', 'img'], function ($string) use (&$ret) {
2052 // Convert hashtag links to hashtags
2053 $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
2055 // Force line feeds at bbtags
2056 $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
2058 // ignore anything in a bbtag
2059 $string = preg_replace('/\[(.*?)\]/sm', '', $string);
2061 // Match full names against @tags including the space between first and last
2062 // We will look these up afterward to see if they are full names or not recognisable.
2064 if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
2065 foreach ($matches[1] as $match) {
2066 if (strstr($match, ']')) {
2067 // we might be inside a bbcode color tag - leave it alone
2071 if (substr($match, -1, 1) === '.') {
2072 $ret[] = substr($match, 0, -1);
2079 // Otherwise pull out single word tags. These can be @nickname, @first_last
2082 if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
2083 foreach ($matches[1] as $match) {
2084 if (strstr($match, ']')) {
2085 // we might be inside a bbcode color tag - leave it alone
2089 // try not to catch url fragments
2090 if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
2099 return array_unique($ret);
2103 * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
2105 * @param string $text
2106 * @param array $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
2107 * @param callable $callback
2110 *@see Strings::performWithEscapedBlocks
2113 public static function performWithEscapedTags(string $text, array $tagList, callable $callback)
2115 $tagList = array_map('preg_quote', $tagList);
2117 return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
2121 * Replaces mentions in the provided message body for the provided user and network if any
2124 * @param $profile_uid
2127 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2128 * @throws \ImagickException
2130 public static function setMentions($body, $profile_uid = 0, $network = '')
2132 BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
2133 $tags = BBCode::getTags($body);
2138 foreach ($tags as $tag) {
2139 $tag_type = substr($tag, 0, 1);
2141 if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
2146 * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
2147 * Robert Johnson should be first in the $tags array
2149 foreach ($tagged as $nextTag) {
2150 if (stristr($nextTag, $tag . ' ')) {
2155 $success = Item::replaceTag($body, $inform, $profile_uid, $tag, $network);
2157 if ($success['replaced']) {
2169 * @param string $author Author display name
2170 * @param string $profile Author profile URL
2171 * @param string $avatar Author profile picture URL
2172 * @param string $link Post source URL
2173 * @param string $posted Post created date
2174 * @param string|null $guid Post guid (if any)
2176 * @TODO Rewrite to handle over whole record array
2178 public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null)
2180 $header = "[share author='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $author) .
2181 "' profile='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $profile) .
2182 "' avatar='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $avatar) .
2183 "' link='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $link) .
2184 "' posted='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $posted);
2187 $header .= "' guid='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $guid);
2196 * Returns the BBCode relevant to embed the provided URL in a post body.
2197 * For media type, it will return [img], [video] and [audio] tags.
2198 * For regular web pages, it will either output a [bookmark] tag if title and description were provided,
2199 * an [attachment] tag or a simple [url] tag depending on $tryAttachment.
2201 * @param string $url
2202 * @param bool $tryAttachment
2203 * @param string|null $title
2204 * @param string|null $description
2205 * @param string|null $tags
2207 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2208 *@see ParseUrl::getSiteinfoCached
2211 public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
2213 DI::logger()->info($url);
2215 // If there is already some content information submitted we don't
2216 // need to parse the url for content.
2217 if (!empty($title) && !empty($description)) {
2218 $title = str_replace(["\r", "\n"], ['', ''], $title);
2220 $description = '[quote]' . trim($description) . '[/quote]' . "\n";
2223 if (!empty($tags)) {
2224 $arr_tags = ParseUrl::convertTagsToArray($tags);
2225 if (count($arr_tags)) {
2226 $str_tags = "\n" . implode(' ', $arr_tags) . "\n";
2230 $result = sprintf('[bookmark=%s]%s[/bookmark]%s', $url, ($title) ? $title : $url, $description) . $str_tags;
2232 DI::logger()->info('(unparsed): returns: ' . $result);
2237 $siteinfo = ParseUrl::getSiteinfoCached($url);
2239 if (in_array($siteinfo['type'], ['image', 'video', 'audio'])) {
2240 switch ($siteinfo['type']) {
2242 $bbcode = "\n" . '[video]' . $url . '[/video]' . "\n";
2245 $bbcode = "\n" . '[audio]' . $url . '[/audio]' . "\n";
2248 $bbcode = "\n" . '[img]' . $url . '[/img]' . "\n";
2255 unset($siteinfo['keywords']);
2257 // Bypass attachment if parse url for a comment
2258 if (!$tryAttachment) {
2259 return "\n" . '[url=' . $url . ']' . $siteinfo['title'] . '[/url]';
2262 // Format it as BBCode attachment
2263 return "\n" . PageInfo::getFooterFromData($siteinfo);