port some functions from osada

1 files changed, 272 insertions, 15 deletions

diff --git a/Zotlabs/Lib/Activity.php b/Zotlabs/Lib/Activity.php
index 931238a25..701e19d37 100644
--- a/Zotlabs/Lib/Activity.php
+++ b/Zotlabs/Lib/Activity.php
@@ -1844,7 +1844,8 @@ class Activity {
 			$s['item_private'] = 1;
 
 		set_iconfig($s,'activitypub','recips',$act->raw_recips);
-		// @FIXME: $parent is not defined
+
+		$parent = (($s['parent_mid'] && $s['parent_mid'] === $s['mid']) ? true : false);
 		if($parent) {
 			set_iconfig($s,'activitypub','rawmsg',$act->raw,1);
 		}
@@ -1853,6 +1854,266 @@ class Activity {
 
 	}
 
+	static function store($channel,$observer_hash,$act,$item,$fetch_parents = true) {
+
+		$is_sys_channel = is_sys_channel($channel['channel_id']);
+
+		// Mastodon only allows visibility in public timelines if the public inbox is listed in the 'to' field.
+		// They are hidden in the public timeline if the public inbox is listed in the 'cc' field.
+		// This is not part of the activitypub protocol - we might change this to show all public posts in pubstream at some point.
+
+		$pubstream = ((is_array($act->obj) && array_key_exists('to', $act->obj) && in_array(ACTIVITY_PUBLIC_INBOX, $act->obj['to'])) ? true : false);
+
+		if(! perm_is_allowed($channel['channel_id'],$observer_hash,'send_stream') && ! ($is_sys_channel && $pubstream)) {
+			logger('no permission');
+			return;
+		}
+
+		if(is_array($act->obj)) {
+			$content = self::get_content($act->obj);
+		}
+		if(! $content) {
+			logger('no content');
+			return;
+		}
+
+		$item['aid'] = $channel['channel_account_id'];
+		$item['uid'] = $channel['channel_id'];
+		$s['uuid'] = '';
+
+		// Friendica sends the diaspora guid in a nonstandard field via AP
+		if($act->obj['diaspora:guid'])
+			$s['uuid'] = $act->obj['diaspora:guid'];
+
+		if(! ( $item['author_xchan'] && $item['owner_xchan'])) {
+			logger('owner or author missing.');
+			return;
+		}
+
+		if($channel['channel_system']) {
+			if(! MessageFilter::evaluate($item,get_config('system','pubstream_incl'),get_config('system','pubstream_excl'))) {
+				logger('post is filtered');
+				return;
+			}
+		}
+
+		$abook = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
+			dbesc($observer_hash),
+			intval($channel['channel_id'])
+		);
+
+		if($abook) {
+			if(! post_is_importable($item,$abook[0])) {
+				logger('post is filtered');
+				return;
+			}
+		}
+
+
+		if($act->obj['conversation']) {
+			set_iconfig($item,'ostatus','conversation',$act->obj['conversation'],1);
+		}
+
+		// This isn't perfect but the best we can do for now.
+
+		$item['comment_policy'] = 'authenticated';
+
+		set_iconfig($item,'activitypub','recips',$act->raw_recips);
+
+		$parent = (($item['parent_mid'] && $item['parent_mid'] === $item['mid']) ? true : false);
+
+		if(! $parent) {
+			$p = q("select parent_mid from item where mid = '%s' and uid = %d limit 1",
+				dbesc($item['parent_mid']),
+				intval($item['uid'])
+			);
+			if(! $p) {
+				$a = (($fetch_parents) ? self::fetch_and_store_parents($channel,$act,$item) : false);
+				if($a) {
+					$p = q("select parent_mid from item where mid = '%s' and uid = %d limit 1",
+						dbesc($item['parent_mid']),
+						intval($item['uid'])
+					);
+				}
+				else {
+					logger('could not fetch parents');
+					return;
+
+					// @TODO we maybe could accept these is we formatted the body correctly with share_bb()
+					// or at least provided a link to the object
+					// if(in_array($act->type,[ 'Like','Dislike' ])) {
+					//	return;
+					// }
+
+					// @TODO do we actually want that?
+					// if no parent was fetched, turn into a top-level post
+
+					// turn into a top level post
+					// $s['parent_mid'] = $s['mid'];
+					// $s['thr_parent'] = $s['mid'];
+				}
+			}
+			if($p[0]['parent_mid'] !== $item['parent_mid']) {
+				$item['thr_parent'] = $item['parent_mid'];
+			}
+			else {
+				$item['thr_parent'] = $p[0]['parent_mid'];
+			}
+			$item['parent_mid'] = $p[0]['parent_mid'];
+		}
+
+		$r = q("select id, created, edited from item where mid = '%s' and uid = %d limit 1",
+			dbesc($item['mid']),
+			intval($item['uid'])
+		);
+		if($r) {
+			if($item['edited'] > $r[0]['edited']) {
+				$item['id'] = $r[0]['id'];
+				$x = item_store_update($item);
+			}
+			else {
+				return;
+			}
+		}
+		else {
+			$x = item_store($item);
+		}
+
+		if(is_array($x) && $x['item_id']) {
+			if($parent) {
+				if($item['owner_xchan'] === $channel['channel_hash']) {
+					// We are the owner of this conversation, so send all received comments back downstream
+					Master::Summon(array('Notifier','comment-import',$x['item_id']));
+				}
+				$r = q("select * from item where id = %d limit 1",
+					intval($x['item_id'])
+				);
+				if($r) {
+					send_status_notifications($x['item_id'],$r[0]);
+				}
+			}
+			sync_an_item($channel['channel_id'],$x['item_id']);
+		}
+
+	}
+
+	static public function fetch_and_store_parents($channel,$act,$item) {
+
+		logger('fetching parents');
+
+		$p = [];
+
+		$current_act = $act;
+		$current_item = $item;
+
+		while($current_item['parent_mid'] !== $current_item['mid']) {
+			$n = ActivityStreams::fetch($current_item['parent_mid'], $channel);
+			if(! $n) {
+				break;
+			}
+			$a = new ActivityStreams($n);
+
+			logger($a->debug());
+
+			if(! $a->is_valid()) {
+				break;
+			}
+
+			$replies = null;
+			if(isset($n['replies']['first']['items'])) {
+				$replies = $n['replies']['first']['items'];
+				// we already have this one
+				array_diff($replies, [$current_item['mid']]);
+			}
+
+			$item = null;
+
+			switch($a->type) {
+				case 'Create':
+				case 'Update':
+				case 'Like':
+				case 'Dislike':
+				case 'Announce':
+					$item = self::decode_note($a);
+					break;
+				default:
+					break;
+
+			}
+			if(! $item) {
+				break;
+			}
+
+			array_unshift($p,[ $a, $item, $replies]);
+
+			if($item['parent_mid'] === $item['mid'] || count($p) > 20) {
+				break;
+			}
+
+			$current_act = $a;
+			$current_item = $item;
+		}
+
+		if($p) {
+			foreach($p as $pv) {
+				self::store($channel,$pv[0]->actor['id'],$pv[0],$pv[1],false);
+				if($pv[2])
+					self::fetch_and_store_replies($channel, $pv[2]);
+			}
+			return true;
+		}
+
+		return false;
+	}
+
+	static public function fetch_and_store_replies($channel, $arr) {
+
+		logger('fetching replies');
+
+		$p = [];
+
+		foreach($arr as $url) {
+
+			$n = ActivityStreams::fetch($url, $channel);
+			if(! $n) {
+				break;
+			}
+
+			$a = new ActivityStreams($n);
+
+			if(! $a->is_valid()) {
+				break;
+			}
+
+			$item = null;
+
+			switch($a->type) {
+				case 'Create':
+				case 'Update':
+				case 'Like':
+				case 'Dislike':
+				case 'Announce':
+					$item = self::decode_note($a);
+					break;
+				default:
+					break;
+			}
+			if(! $item) {
+				break;
+			}
+
+			array_unshift($p,[ $a, $item ]);
+
+		}
+
+		if($p) {
+			foreach($p as $pv) {
+				self::store($channel,$pv[0]->actor['id'],$pv[0],$pv[1],false);
+			}
+		}
+
+	}
+
 	static function announce_note($channel,$observer_hash,$act) {
 
 		$s = [];
@@ -1973,25 +2234,21 @@ class Activity {
 			$x = item_store($s);
 		}
 
-
 		if(is_array($x) && $x['item_id']) {
-			// @FIXME: $parent is not defined
-			if($parent) {
-				if($s['owner_xchan'] === $channel['channel_hash']) {
-					// We are the owner of this conversation, so send all received comments back downstream
-					Master::Summon(array('Notifier','comment-import',$x['item_id']));
-				}
-				$r = q("select * from item where id = %d limit 1",
-					intval($x['item_id'])
-				);
-				if($r) {
-					send_status_notifications($x['item_id'],$r[0]);
-				}
+			if($s['owner_xchan'] === $channel['channel_hash']) {
+				// We are the owner of this conversation, so send all received comments back downstream
+				Master::Summon(array('Notifier','comment-import',$x['item_id']));
 			}
+			$r = q("select * from item where id = %d limit 1",
+				intval($x['item_id'])
+			);
+			if($r) {
+				send_status_notifications($x['item_id'],$r[0]);
+			}
+
 			sync_an_item($channel['channel_id'],$x['item_id']);
 		}
 
-
 	}
 
 	static function like_note($channel,$observer_hash,$act) {