use Friendica\Model\Item;
use Friendica\Model\ItemURI;
use Friendica\Model\Mail;
+use Friendica\Model\Search;
use Friendica\Model\Tag;
use Friendica\Model\User;
use Friendica\Protocol\Activity;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\JsonLD;
use Friendica\Util\Strings;
+use Text_LanguageDetect;
/**
* ActivityPub Processor Protocol class
$item['isForum'] = false;
if (!empty($activity['thread-completion'])) {
- // Store the original actor in the "causer" fields to enable the check for ignored or blocked contacts
- $item['causer-link'] = $item['owner-link'];
- $item['causer-id'] = $item['owner-id'];
+ if ($activity['thread-completion'] != $item['owner-id']) {
+ $actor = Contact::getById($activity['thread-completion'], ['url']);
+ $item['causer-link'] = $actor['url'];
+ $item['causer-id'] = $activity['thread-completion'];
+ Logger::info('Use inherited actor as causer.', ['id' => $item['owner-id'], 'activity' => $activity['thread-completion'], 'owner' => $item['owner-link'], 'actor' => $actor['url']]);
+ } else {
+ // Store the original actor in the "causer" fields to enable the check for ignored or blocked contacts
+ $item['causer-link'] = $item['owner-link'];
+ $item['causer-id'] = $item['owner-id'];
+ Logger::info('Use actor as causer.', ['id' => $item['owner-id'], 'actor' => $item['owner-link']]);
+ }
- Logger::info('Ignoring actor because of thread completion.', ['actor' => $item['owner-link']]);
$item['owner-link'] = $item['author-link'];
$item['owner-id'] = $item['author-id'];
} else {
}
$stored = false;
+ ksort($activity['receiver']);
foreach ($activity['receiver'] as $receiver) {
if ($receiver == -1) {
$item['post-type'] = Item::PT_ARTICLE;
}
- if (in_array($item['post-type'], [Item::PT_COMMENT, Item::PT_GLOBAL, Item::PT_ARTICLE])) {
- if (!empty($activity['from-relay'])) {
- $item['post-type'] = Item::PT_RELAY;
- } elseif (!empty($activity['thread-completion'])) {
- $item['post-type'] = Item::PT_FETCHED;
- }
- }
-
if (!empty($activity['from-relay'])) {
- $item['causer-id'] = $activity['from-relay'];
+ $item['post-type'] = Item::PT_RELAY;
+ } elseif (!empty($activity['thread-completion'])) {
+ $item['post-type'] = Item::PT_FETCHED;
}
if ($item['isForum'] ?? false) {
$ldactivity = JsonLD::compact($activity);
- $ldactivity['thread-completion'] = true;
- $ldactivity['from-relay'] = Contact::getIdForURL($relay_actor);
+ if (!empty($relay_actor)) {
+ $ldactivity['thread-completion'] = $ldactivity['from-relay'] = Contact::getIdForURL($relay_actor);
+ } elseif (!empty($child['thread-completion'])) {
+ $ldactivity['thread-completion'] = $child['thread-completion'];
+ } else {
+ $ldactivity['thread-completion'] = Contact::getIdForURL($actor);
+ }
+
+ if (!empty($relay_actor) && !self::acceptIncomingMessage($ldactivity, $object['id'])) {
+ return '';
+ }
ActivityPub\Receiver::processActivity($ldactivity, json_encode($activity), $uid, true, false, $signer);
return $activity['id'];
}
+ /**
+ * Test if incoming relay messages should be accepted
+ *
+ * @param array $activity activity array
+ * @param string $id object ID
+ * @return boolean true if message is accepted
+ */
+ private static function acceptIncomingMessage(array $activity, string $id)
+ {
+ if (empty($activity['as:object'])) {
+ Logger::info('No object field in activity - accepted', ['id' => $id]);
+ return true;
+ }
+
+ $config = DI::config();
+
+ $subscribe = $config->get('system', 'relay_subscribe', false);
+ if ($subscribe) {
+ $scope = $config->get('system', 'relay_scope', SR_SCOPE_ALL);
+ } else {
+ $scope = SR_SCOPE_NONE;
+ }
+
+ if ($scope == SR_SCOPE_ALL) {
+ Logger::info('Server accept all posts - accepted', ['id' => $id]);
+ return true;
+ }
+
+ $replyto = JsonLD::fetchElement($activity['as:object'], 'as:inReplyTo', '@id');
+ if (Item::exists(['uri' => $replyto])) {
+ Logger::info('Post is a reply to an existing post - accepted', ['id' => $id, 'replyto' => $replyto]);
+ return true;
+ }
+
+ if ($scope == SR_SCOPE_NONE) {
+ Logger::info('Server does not accept relay posts - rejected', ['id' => $id]);
+ return false;
+ }
+
+ $messageTags = [];
+ $tags = Receiver::processTags(JsonLD::fetchElementArray($activity['as:object'], 'as:tag') ?? []);
+ if (!empty($tags)) {
+ foreach ($tags as $tag) {
+ if ($tag['type'] != 'Hashtag') {
+ continue;
+ }
+ $messageTags[] = ltrim(mb_strtolower($tag['name']), '#');
+ }
+ }
+
+ $systemTags = [];
+ $userTags = [];
+
+ if ($scope == SR_SCOPE_TAGS) {
+ $server_tags = $config->get('system', 'relay_server_tags', []);
+ $tagitems = explode(',', mb_strtolower($server_tags));
+
+ foreach ($tagitems AS $tag) {
+ $systemTags[] = trim($tag, '# ');
+ }
+
+ if ($config->get('system', 'relay_user_tags')) {
+ $userTags = Search::getUserTags();
+ }
+ }
+
+ $content = mb_strtolower(BBCode::toPlaintext(HTML::toBBCode(JsonLD::fetchElement($activity['as:object'], 'as:content', '@value')), false));
+
+ $tagList = array_unique(array_merge($systemTags, $userTags));
+ foreach ($messageTags as $tag) {
+ if (in_array($tag, $tagList)) {
+ Logger::info('Subscribed hashtag found - accepted', ['id' => $id, 'hashtag' => $tag]);
+ return true;
+ }
+ // We check with "strpos" for performance issues. Only when this is true, the regular expression check is used
+ // RegExp is taken from here: https://medium.com/@shiba1014/regex-word-boundaries-with-unicode-207794f6e7ed
+ if ((strpos($content, $tag) !== false) && preg_match('/(?<=[\s,.:;"\']|^)' . preg_quote($tag, '/') . '(?=[\s,.:;"\']|$)/', $content)) {
+ Logger::info('Subscribed hashtag found in content - accepted', ['id' => $id, 'hashtag' => $tag]);
+ return true;
+ }
+ }
+
+ Logger::info('No matching hashtags found - rejected', ['id' => $id]);
+ return false;
+ }
+
/**
* perform a "follow" request
*
projects / friendica.git / blobdiff