sforkowany z mirror/friendica
Remove implicit mentions from incoming ActivityPub messages
- Add Processor::getImplicitMentionList and Processor::removeImplicitMentionsFromBody methods - Rename Processor::constructTagList to Processor::constructTagString - Add implicit mention skip in Processor::constructTagString - Invert parameter order in Processor::replaceEmojis2022.09-rc
Hypolite Petovan
rodzic
6577b1abb0
commit
e352408876
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@ -13,6 +13,7 @@ use Friendica\Model\Contact;
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use Friendica\Model\APContact;
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use Friendica\Model\Item;
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use Friendica\Model\Event;
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use Friendica\Model\Term;
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use Friendica\Model\User;
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use Friendica\Protocol\ActivityPub;
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use Friendica\Util\DateTimeFormat;
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@ -47,7 +48,7 @@ class Processor
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*
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* @return string with replaced emojis
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*/
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public static function replaceEmojis($emojis, $body)
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public static function replaceEmojis($body, array $emojis)
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{
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foreach ($emojis as $emoji) {
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$replace = '[class=emoji mastodon][img=' . $emoji['href'] . ']' . $emoji['name'] . '[/img][/class]';
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@ -59,12 +60,12 @@ class Processor
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/**
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* Constructs a string with tags for a given tag array
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*
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* @param array $tags
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* @param array $tags
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* @param boolean $sensitive
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*
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* @param array $implicit_mentions List of profile URLs to skip
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* @return string with tags
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*/
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private static function constructTagList($tags, $sensitive)
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private static function constructTagString($tags, $sensitive, array $implicit_mentions)
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{
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if (empty($tags)) {
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return '';
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@ -72,7 +73,7 @@ class Processor
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$tag_text = '';
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foreach ($tags as $tag) {
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if (in_array(defaults($tag, 'type', ''), ['Mention', 'Hashtag'])) {
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if (in_array(defaults($tag, 'type', ''), ['Mention', 'Hashtag']) && !in_array($tag['href'], $implicit_mentions)) {
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if (!empty($tag_text)) {
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$tag_text .= ',';
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}
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@ -128,14 +129,35 @@ class Processor
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*/
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public static function updateItem($activity)
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{
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$item = [];
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$item = Item::selectFirst(['uri', 'parent-uri', 'gravity'], ['uri' => $activity['id']]);
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if (!DBA::isResult($item)) {
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Logger::warning('Unknown item with uri: ' . $activity['id']);
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return;
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}
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$item['changed'] = DateTimeFormat::utcNow();
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$item['edited'] = $activity['updated'];
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$item['title'] = HTML::toBBCode($activity['name']);
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$item['content-warning'] = HTML::toBBCode($activity['summary']);
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$content = self::replaceEmojis($activity['emojis'], HTML::toBBCode($activity['content']));
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$item['body'] = self::convertMentions($content);
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$item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']);
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$content = HTML::toBBCode($activity['content']);
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$content = self::replaceEmojis($content, $activity['emojis']);
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$content = self::convertMentions($content);
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$implicit_mentions = [];
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if (($item['parent-uri'] != $item['uri']) && ($item['gravity'] == GRAVITY_COMMENT)) {
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$parent = Item::selectFirst(['id', 'author-link', 'alias'], ['uri' => $item['parent-uri']]);
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if (!DBA::isResult($parent)) {
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Logger::warning('Unknown item parent with uri: ' . $item['parent-uri']);
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return;
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}
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$implicit_mentions = self::getImplicitMentionList($parent);
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$content = self::removeImplicitMentionsFromBody($content, $implicit_mentions);
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}
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$item['body'] = $content;
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$item['tag'] = self::constructTagString($activity['tags'], $activity['sensitive'], $implicit_mentions);
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Item::update($item, ['uri' => $activity['id']]);
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}
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@ -273,10 +295,15 @@ class Processor
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}
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$item['uri'] = $activity['id'];
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$content = HTML::toBBCode($activity['content']);
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$content = self::replaceEmojis($content, $activity['emojis']);
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$content = self::convertMentions($content);
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$implicit_mentions = [];
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if (($item['parent-uri'] != $item['uri']) && ($item['gravity'] == GRAVITY_COMMENT)) {
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$item_private = !in_array(0, $activity['item_receiver']);
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$parent = Item::selectFirst(['private'], ['uri' => $item['parent-uri']]);
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$parent = Item::selectFirst(['id', 'private', 'author-link', 'alias'], ['uri' => $item['parent-uri']]);
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if (!DBA::isResult($parent)) {
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return;
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}
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@ -284,6 +311,9 @@ class Processor
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Logger::log('Item ' . $item['uri'] . ' is private but the parent ' . $item['parent-uri'] . ' is not. So we drop it.');
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return;
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}
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$implicit_mentions = self::getImplicitMentionList($parent);
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$content = self::removeImplicitMentionsFromBody($content, $implicit_mentions);
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}
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$item['created'] = $activity['published'];
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@ -291,8 +321,7 @@ class Processor
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$item['guid'] = $activity['diaspora:guid'];
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$item['title'] = HTML::toBBCode($activity['name']);
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$item['content-warning'] = HTML::toBBCode($activity['summary']);
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$content = self::replaceEmojis($activity['emojis'], HTML::toBBCode($activity['content']));
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$item['body'] = self::convertMentions($content);
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$item['body'] = $content;
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if (($activity['object_type'] == 'as:Video') && !empty($activity['alternate-url'])) {
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$item['body'] .= "\n[video]" . $activity['alternate-url'] . '[/video]';
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@ -304,7 +333,7 @@ class Processor
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$item['coord'] = $item['latitude'] . ' ' . $item['longitude'];
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}
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$item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']);
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$item['tag'] = self::constructTagString($activity['tags'], $activity['sensitive'], $implicit_mentions);
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$item['app'] = $activity['generator'];
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$item['plink'] = defaults($activity, 'alternate-url', $item['uri']);
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@ -610,4 +639,62 @@ class Processor
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Logger::log('Change existing contact ' . $cid . ' from ' . $contact['network'] . ' to ActivityPub.');
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Contact::updateFromProbe($cid, Protocol::ACTIVITYPUB);
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}
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/**
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* Collects implicit mentions like:
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* - the author of the parent item
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* - all the mentioned conversants in the parent item
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*
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* @param array $parent Item array with at least ['id', 'author-link', 'alias']
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* @return array
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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private static function getImplicitMentionList(array $parent)
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{
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$parent_terms = Term::tagArrayFromItemId($parent['id'], [TERM_MENTION]);
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$implicit_mentions = [
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$parent['author-link']
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];
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if ($parent['alias']) {
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$implicit_mentions[] = $parent['alias'];
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}
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foreach ($parent_terms as $term) {
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$contact = Contact::getDetailsByURL($term['url']);
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$implicit_mentions[] = $contact['url'];
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$implicit_mentions[] = $contact['nurl'];
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$implicit_mentions[] = $contact['alias'];
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}
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return $implicit_mentions;
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}
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/**
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* Strips from the body prepended implicit mentions
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*
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* @param string $body
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* @param array $implicit_mentions List of profile URLs
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* @return string
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*/
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private static function removeImplicitMentionsFromBody($body, array $implicit_mentions)
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{
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$kept_mentions = [];
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// Extract one prepended mention at a time from the body
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while(preg_match('#^(@\[url=([^\]]+)].*?\[\/url]\s)(.*)#mi', $body, $matches)) {
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if (!in_array($matches[2], $implicit_mentions) ) {
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$kept_mentions[] = $matches[1];
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}
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$body = $matches[3];
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}
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// Re-appending the kept mentions to the body after extraction
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$kept_mentions[] = $body;
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return implode('', $kept_mentions);
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}
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}
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