Lemmy support added
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2 changed files with 47 additions and 1 deletions
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@ -56,7 +56,7 @@ class Receiver
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{
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const PUBLIC_COLLECTION = 'as:Public';
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const ACCOUNT_TYPES = ['as:Person', 'as:Organization', 'as:Service', 'as:Group', 'as:Application'];
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const CONTENT_TYPES = ['as:Note', 'as:Article', 'as:Video', 'as:Image', 'as:Event', 'as:Audio'];
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const CONTENT_TYPES = ['as:Note', 'as:Article', 'as:Video', 'as:Image', 'as:Event', 'as:Audio', 'as:Page'];
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const ACTIVITY_TYPES = ['as:Like', 'as:Dislike', 'as:Accept', 'as:Reject', 'as:TentativeAccept'];
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const TARGET_UNKNOWN = 0;
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@ -321,6 +321,20 @@ class Receiver
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$object_type = self::fetchObjectType($activity, $object_id, $uid);
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// Fetch the activity on Lemmy "Announce" messages (announces of activities)
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if (($type == 'as:Announce') && in_array($object_type, self::ACTIVITY_TYPES)) {
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$data = ActivityPub::fetchContent($object_id, $uid);
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if (!empty($data)) {
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$type = $object_type;
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$activity = JsonLD::compact($data);
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// Some variables need to be refetched since the activity changed
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$actor = JsonLD::fetchElement($activity, 'as:actor', '@id');
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$object_id = JsonLD::fetchElement($activity, 'as:object', '@id');
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$object_type = self::fetchObjectType($activity, $object_id, $uid);
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}
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}
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// Fetch the content only on activities where this matters
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// We can receive "#emojiReaction" when fetching content from Hubzilla systems
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if (in_array($type, ['as:Create', 'as:Update', 'as:Announce']) || strpos($type, '#emojiReaction')) {
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@ -473,6 +487,12 @@ class Receiver
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return;
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}
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// Lemmy is announcing activities.
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// We are changing the announces into regular activities.
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if (($type == 'as:Announce') && in_array($object_data['type'] ?? '', self::ACTIVITY_TYPES)) {
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$type = $object_data['type'];
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}
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if (!$trust_source) {
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Logger::info('Activity trust could not be achieved.', ['id' => $object_data['object_id'], 'type' => $type, 'signer' => $signer, 'actor' => $actor, 'attributedTo' => $attributed_to]);
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return;
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@ -955,6 +975,18 @@ class Receiver
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return false;
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}
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// Lemmy is resharing "create" activities instead of content
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// We fetch the content from the activity.
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if (in_array($type, ['as:Create'])) {
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$object = $object['as:object'];
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$type = JsonLD::fetchElement($object, '@type');
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if (empty($type)) {
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Logger::info('Empty type');
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return false;
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}
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$object_data = self::processObject($object);
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}
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// We currently don't handle 'pt:CacheFile', but with this step we avoid logging
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if (in_array($type, self::CONTENT_TYPES) || ($type == 'pt:CacheFile')) {
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$object_data = self::processObject($object);
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@ -1329,6 +1361,14 @@ class Receiver
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// An empty "id" field is translated to "./" by the compactor, so we have to check for this content
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if (empty($object_data['reply-to-id']) || ($object_data['reply-to-id'] == './')) {
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$object_data['reply-to-id'] = $object_data['id'];
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// On activities the "reply to" is the id of the object it refers to
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if (in_array($object_data['object_type'], self::ACTIVITY_TYPES)) {
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$object_id = JsonLD::fetchElement($object, 'as:object', '@id');
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if (!empty($object_id)) {
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$object_data['reply-to-id'] = $object_id;
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}
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}
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} else {
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// Some systems (e.g. GNU Social) don't reply to the "id" field but the "uri" field.
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$replyToId = Item::getURIByLink($object_data['reply-to-id']);
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@ -60,6 +60,12 @@ class ParseUrl
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public static function getContentType(string $url)
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{
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$curlResult = DI::httpClient()->head($url);
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// Workaround for systems that can't handle a HEAD request
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if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() == 405)) {
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$curlResult = DI::httpClient()->get($url, [HttpClientOptions::CONTENT_LENGTH => 1000000]);
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}
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if (!$curlResult->isSuccess()) {
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return [];
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}
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