';
} else {
$return = '' . htmlentities($matches[2], ENT_NOQUOTES, 'UTF-8') . '';
}
return $return;
},
$text
);
// Default iframe allowed domains/path
$allowedIframeDomains = [
DI::baseUrl()->getHost()
. (DI::baseUrl()->getPath() ? '/' . DI::baseUrl()->getPath() : '')
. '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
'www.youtube.com/embed/',
'player.vimeo.com/video/',
];
$allowedIframeDomains = array_merge(
$allowedIframeDomains,
DI::config()->get('system', 'allowed_oembed') ?
explode(',', DI::config()->get('system', 'allowed_oembed'))
: []
);
if (strpos($text, '
') !== false || strpos($text, '
') !== false) {
$text = '
' . $text . '
';
}
$text = HTML::purify($text, $allowedIframeDomains);
DI::profiler()->stopRecording();
return trim($text);
}
/**
* Strips the "abstract" tag from the provided text
*
* @param string $text The text with BBCode
* @return string The same text - but without "abstract" element
*/
public static function stripAbstract(string $text): string
{
DI::profiler()->startRecording('rendering');
$text = self::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) {
$text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", ' ', $text);
$text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", ' ', $text);
return $text;
});
DI::profiler()->stopRecording();
return $text;
}
/**
* Returns the value of the "abstract" element
*
* @param string $text The text that maybe contains the element
* @param string $addon The addon for which the abstract is meant for
* @return string The abstract
*/
public static function getAbstract(string $text, string $addon = ''): string
{
DI::profiler()->startRecording('rendering');
$addon = strtolower($addon);
$abstract = self::performWithEscapedTags($text, ['code', 'noparse', 'nobb', 'pre'], function ($text) use ($addon) {
if ($addon && preg_match('#\[abstract=' . preg_quote($addon, '#') . '](.*?)\[/abstract]#ism', $text, $matches)) {
return $matches[1];
}
if (preg_match("#\[abstract](.*?)\[/abstract]#ism", $text, $matches)) {
return $matches[1];
}
return '';
});
DI::profiler()->stopRecording();
return $abstract;
}
/**
* Callback function to replace a Friendica style mention in a mention for Diaspora
*
* @param array $match Matching values for the callback
* [1] = Mention type (! or @)
* [2] = Name
* [3] = Address
* @return string Replaced mention
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function bbCodeMention2DiasporaCallback(array $match): string
{
$contact = Contact::getByURL($match[3], false, ['addr']);
if (empty($contact['addr'])) {
return $match[0];
}
$mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
return $mention;
}
/**
* Converts a BBCode text into Markdown
*
* This function converts a BBCode item body to be sent to Markdown-enabled
* systems like Diaspora and Libertree
*
* @param string $text
* @param bool $for_diaspora Diaspora requires more changes than Libertree
* @return string
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function toMarkdown(string $text, bool $for_diaspora = true): string
{
DI::profiler()->startRecording('rendering');
$original_text = $text;
// Since Diaspora is creating a summary for links, this function removes them before posting
if ($for_diaspora) {
$text = self::removeShareInformation($text);
}
/**
* Transform #tags, strip off the [url] and replace spaces with underscore
*/
$url_search_string = "^\[\]";
$text = preg_replace_callback(
"/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
function ($matches) {
return '#' . str_replace(' ', '_', $matches[2]);
},
$text
);
// Converting images with size parameters to simple images. Markdown doesn't know it.
$text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
// Convert it to HTML - don't try oembed
if ($for_diaspora) {
$text = self::convertForUriId(0, $text, self::DIASPORA);
// Add all tags that maybe were removed
if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
$tagline = '';
foreach ($tags[2] as $tag) {
$tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
$tagline .= '#' . $tag . ' ';
}
}
$text = $text . ' ' . $tagline;
}
} else {
$text = self::convertForUriId(0, $text, self::CONNECTORS);
}
// If a link is followed by a quote then there should be a newline before it
// Maybe we should make this newline at every time before a quote.
$text = str_replace(['
'], ['
'], $text);
// The converter doesn't convert these elements
$text = str_replace(['
', '
'], ['
', '
'], $text);
// Now convert HTML to Markdown
$text = HTML::toMarkdown($text);
// Libertree has a problem with escaped hashtags.
$text = str_replace(['\#'], ['#'], $text);
// Remove any leading or trailing whitespace, as this will mess up
// the Diaspora signature verification and cause the item to disappear
$text = trim($text);
if ($for_diaspora) {
$url_search_string = "^\[\]";
$text = preg_replace_callback(
"/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
[self::class, 'bbCodeMention2DiasporaCallback'],
$text
);
}
Hook::callAll('bb2diaspora', $text);
DI::profiler()->stopRecording();
return $text;
}
/**
* Pull out all #hashtags and @person tags from $string.
*
* We also get @person@domain.com - which would make
* the regex quite complicated as tags can also
* end a sentence. So we'll run through our results
* and strip the period from any tags which end with one.
* Returns array of tags found, or empty array.
*
* @param string $string Post content
* @return array List of tag and person names
*/
public static function getTags(string $string): array
{
DI::profiler()->startRecording('rendering');
$ret = [];
self::performWithEscapedTags($string, ['noparse', 'pre', 'code', 'img', 'attachment'], function ($string) use (&$ret) {
// Convert hashtag links to hashtags
$string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2 ', $string);
// Force line feeds at bbtags
$string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
// ignore anything in a bbtag
$string = preg_replace('/\[(.*?)\]/sm', '', $string);
// Match full names against @tags including the space between first and last
// We will look these up afterward to see if they are full names or not recognisable.
if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
foreach ($matches[1] as $match) {
if (strstr($match, ']')) {
// we might be inside a bbcode color tag - leave it alone
continue;
}
if (substr($match, -1, 1) === '.') {
$ret[] = substr($match, 0, -1);
} else {
$ret[] = $match;
}
}
}
// Otherwise pull out single word tags. These can be @nickname, @first_last
// and #hash tags.
if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?\']*[^\^ \x0D\x0A,;:?!\'.])/', $string, $matches)) {
foreach ($matches[1] as $match) {
if (strstr($match, ']')) {
// we might be inside a bbcode color tag - leave it alone
continue;
}
// try not to catch url fragments
if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
continue;
}
$ret[] = $match;
}
}
});
DI::profiler()->stopRecording();
return array_unique($ret);
}
/**
* Expand tags to URLs, checks the tag is at the start of a line or preceded by a non-word character
*
* @param string $body HTML/BBCode
* @return string body with expanded tags
*/
public static function expandTags(string $body): string
{
return preg_replace_callback(
"/(?<=\W|^)([!#@])([^\^ \x0D\x0A,;:?'\"]*[^\^ \x0D\x0A,;:?!'\".])/",
function (array $match) {
switch ($match[1]) {
case '!':
case '@':
$contact = Contact::getByURL($match[2]);
if (!empty($contact)) {
return $match[1] . '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
} else {
return $match[1] . $match[2];
}
break;
case '#':
default:
return $match[1] . '[url=' . DI::baseUrl() . '/search?tag=' . urlencode($match[2]) . ']' . $match[2] . '[/url]';
}
},
$body
);
}
/**
* Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
*
* @param string $text HTML/BBCode
* @param array $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
* @param callable $callback
* @return string
* @see Strings::performWithEscapedBlocks
*/
public static function performWithEscapedTags(string $text, array $tagList, callable $callback): string
{
$tagList = array_map('preg_quote', $tagList);
return Strings::performWithEscapedBlocks($text, '#\[(?:' . implode('|', $tagList) . ').*?\[/(?:' . implode('|', $tagList) . ')]#ism', $callback);
}
/**
* Replaces mentions in the provided message body in BBCode links for the provided user and network if any
*
* @param string $body HTML/BBCode
* @param int $profile_uid Profile user id
* @param string $network Network name
* @return string HTML/BBCode with inserted images
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function setMentions(string $body, $profile_uid = 0, $network = '')
{
DI::profiler()->startRecording('rendering');
$body = self::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
$tags = self::getTags($body);
$tagged = [];
foreach ($tags as $tag) {
$tag_type = substr($tag, 0, 1);
if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
continue;
}
/*
* If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
* Robert Johnson should be first in the $tags array
*/
foreach ($tagged as $nextTag) {
if (stristr($nextTag, $tag . ' ')) {
continue 2;
}
}
if (($success = Item::replaceTag($body, $profile_uid, $tag, $network)) && $success['replaced']) {
$tagged[] = $tag;
}
}
return $body;
});
DI::profiler()->stopRecording();
return $body;
}
/**
* @param string $author Author display name
* @param string $profile Author profile URL
* @param string $avatar Author profile picture URL
* @param string $link Post source URL
* @param string $posted Post created date
* @param string|null $guid Post guid (if any)
* @param string|null $uri Post uri (if any)
* @return string
* @TODO Rewrite to handle over whole record array
*/
public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null, string $uri = null): string
{
DI::profiler()->startRecording('rendering');
$header = "[share author='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $author) .
"' profile='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $profile) .
"' avatar='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $avatar) .
"' link='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $link) .
"' posted='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $posted);
if ($guid) {
$header .= "' guid='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $guid);
}
if ($uri) {
$header .= "' message_id='" . str_replace(["'", "[", "]"], ["'", "[", "]"], $uri);
}
$header .= "']";
DI::profiler()->stopRecording();
return $header;
}
/**
* Returns the BBCode relevant to embed the provided URL in a post body.
* For media type, it will return [img], [video] and [audio] tags.
* For regular web pages, it will either output a [bookmark] tag if title and description were provided,
* an [attachment] tag or a simple [url] tag depending on $tryAttachment.
*
* @param string $url
* @param bool $tryAttachment
* @param string|null $title
* @param string|null $description
* @param string|null $tags
* @return string
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @see ParseUrl::getSiteinfoCached
*/
public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
{
DI::profiler()->startRecording('rendering');
DI::logger()->info($url);
// If there is already some content information submitted we don't
// need to parse the url for content.
if (!empty($title) && !empty($description)) {
$title = str_replace(["\r", "\n"], ['', ''], $title);
$description = '[quote]' . trim($description) . '[/quote]' . "\n";
$str_tags = '';
if (!empty($tags)) {
$arr_tags = ParseUrl::convertTagsToArray($tags);
if (count($arr_tags)) {
$str_tags = "\n" . implode(' ', $arr_tags) . "\n";
}
}
$result = sprintf('[bookmark=%s]%s[/bookmark]%s', $url, ($title) ? $title : $url, $description) . $str_tags;
DI::logger()->info('(unparsed): returns: ' . $result);
DI::profiler()->stopRecording();
return $result;
}
$siteinfo = ParseUrl::getSiteinfoCached($url);
if (in_array($siteinfo['type'], ['image', 'video', 'audio'])) {
switch ($siteinfo['type']) {
case 'video':
$bbcode = "\n" . '[video]' . $url . '[/video]' . "\n";
break;
case 'audio':
$bbcode = "\n" . '[audio]' . $url . '[/audio]' . "\n";
break;
default:
$bbcode = "\n" . '[img]' . $url . '[/img]' . "\n";
break;
}
DI::profiler()->stopRecording();
return $bbcode;
}
unset($siteinfo['keywords']);
// Bypass attachment if parse url for a comment
if (!$tryAttachment) {
DI::profiler()->stopRecording();
return "\n" . '[url=' . $url . ']' . ($siteinfo['title'] ?? $url) . '[/url]';
}
// Format it as BBCode attachment
$bbcode = "\n" . PageInfo::getFooterFromData($siteinfo);
DI::profiler()->stopRecording();
return $bbcode;
}
}
 . '/images/lock_icon.gif "' . DI::l10n()->t('Encrypted content') . '"){kind=icon}
 . '/images/lock_icon.gif "' . '$1' . ' ' . DI::l10n()->t('Encrypted content') . '"){kind=icon}