ActivityStreams::get_accept_header_string($channel), 'Host' => $m['host'], 'Date' => datetime_convert('UTC', 'UTC', 'now', 'D, d M Y H:i:s \\G\\M\\T'), '(request-target)' => 'get ' . get_request_string($url) ]; if (isset($token)) { $headers['Authorization'] = 'Bearer ' . $token; } $h = HTTPSig::create_sig($headers, $channel['channel_prvkey'], channel_url($channel), false); $x = z_fetch_url($url, true, $redirects, ['headers' => $h]); } if ($x['success']) { $m = parse_url($url); if ($m) { $y = ['scheme' => $m['scheme'], 'host' => $m['host']]; if (array_key_exists('port', $m)) $y['port'] = $m['port']; $site_url = unparse_url($y); q("UPDATE site SET site_update = '%s', site_dead = 0 WHERE site_url = '%s' AND site_update < %s - INTERVAL %s", dbesc(datetime_convert()), dbesc($site_url), db_utcnow(), db_quoteinterval('1 DAY') ); } $y = json_decode($x['body'], true); logger('returned: ' . json_encode($y, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES), LOGGER_DEBUG); return json_decode($x['body'], true); } else { logger('fetch failed: ' . $url); logger($x['body']); } return null; } static function fetch_person($x) { return self::fetch_profile($x); } static function fetch_profile($x) { $r = q("select * from xchan where xchan_url = '%s' limit 1", dbesc($x['id']) ); if (!$r) { $r = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($x['id']) ); } if (!$r) return []; return self::encode_person($r[0]); } static function fetch_thing($x) { $r = q("select * from obj where obj_type = %d and obj_obj = '%s' limit 1", intval(TERM_OBJ_THING), dbesc($x['id']) ); if (!$r) return []; $x = [ 'type' => 'Object', 'id' => z_root() . '/thing/' . $r[0]['obj_obj'], 'name' => $r[0]['obj_term'] ]; if ($r[0]['obj_image']) $x['image'] = $r[0]['obj_image']; return $x; } static function fetch_item($x) { if (array_key_exists('source', $x)) { // This item is already processed and encoded return $x; } $r = q("select * from item where mid = '%s' limit 1", dbesc($x['id']) ); if ($r) { xchan_query($r, true); $r = fetch_post_tags($r); if (in_array($r[0]['verb'], ['Create', 'Invite']) && $r[0]['obj_type'] === ACTIVITY_OBJ_EVENT) { $r[0]['verb'] = 'Invite'; return self::encode_activity($r[0]); } return self::encode_item($r[0]); } } static function fetch_image($x) { $ret = [ 'type' => 'Image', 'id' => $x['id'], 'name' => $x['title'], 'content' => bbcode($x['body'], ['cache' => true]), 'source' => ['mediaType' => 'text/bbcode', 'content' => $x['body']], 'published' => datetime_convert('UTC', 'UTC', $x['created'], ATOM_TIME), 'updated' => datetime_convert('UTC', 'UTC', $x['edited'], ATOM_TIME), 'url' => [ 'type' => 'Link', 'mediaType' => $x['link'][0]['type'], 'href' => $x['link'][0]['href'], 'width' => $x['link'][0]['width'], 'height' => $x['link'][0]['height'] ] ]; return $ret; } static function fetch_event($x) { // convert old Zot event objects to ActivityStreams Event objects if (array_key_exists('content', $x) && array_key_exists('dtstart', $x)) { $ev = bbtoevent($x['content']); if ($ev) { if (!$ev['timezone']) { $ev['timezone'] = 'UTC'; } $actor = null; if (array_key_exists('author', $x) && array_key_exists('link', $x['author'])) { $actor = $x['author']['link'][0]['href']; } $y = [ 'type' => 'Event', 'id' => z_root() . '/event/' . $ev['event_hash'], 'name' => $ev['summary'], // 'summary' => bbcode($ev['summary'], [ 'cache' => true ]), // RFC3339 Section 4.3 'startTime' => (($ev['adjust']) ? datetime_convert($ev['timezone'], 'UTC', $ev['dtstart'], ATOM_TIME) : datetime_convert('UTC', 'UTC', $ev['dtstart'], 'Y-m-d\\TH:i:s-00:00')), 'content' => bbcode($ev['description'], ['cache' => true]), 'location' => ['type' => 'Place', 'content' => bbcode($ev['location'], ['cache' => true])], 'source' => ['content' => format_event_bbcode($ev, true), 'mediaType' => 'text/bbcode'], 'actor' => $actor, ]; if (!$ev['nofinish']) { $y['endTime'] = (($ev['adjust']) ? datetime_convert($ev['timezone'], 'UTC', $ev['dtend'], ATOM_TIME) : datetime_convert('UTC', 'UTC', $ev['dtend'], 'Y-m-d\\TH:i:s-00:00')); } // copy attachments from the passed object - these are already formatted for ActivityStreams if ($x['attachment']) { $y['attachment'] = $x['attachment']; } if ($actor) { return $y; } } } return $x; } static function paged_collection_init($total, $id, $type = 'OrderedCollection') { $ret = [ 'id' => z_root() . '/' . $id, 'type' => $type, 'totalItems' => $total, ]; $numpages = $total / App::$pager['itemspage']; $lastpage = (($numpages > intval($numpages)) ? intval($numpages) + 1 : $numpages); $ret['first'] = z_root() . '/' . App::$query_string . '?page=1'; $ret['last'] = z_root() . '/' . App::$query_string . '?page=' . $lastpage; return $ret; } static function encode_item_collection($items, $id, $type, $total = 0) { if ($total > 30) { $ret = [ 'id' => z_root() . '/' . $id, 'type' => $type . 'Page', ]; $numpages = $total / App::$pager['itemspage']; $lastpage = (($numpages > intval($numpages)) ? intval($numpages) + 1 : $numpages); $url_parts = parse_url($id); $ret['partOf'] = z_root() . '/' . $url_parts['path']; $extra_query_args = ''; $query_args = null; if (isset($url_parts['query'])) { parse_str($url_parts['query'], $query_args); } if (is_array($query_args)) { unset($query_args['page']); foreach ($query_args as $k => $v) $extra_query_args .= '&' . urlencode($k) . '=' . urlencode($v); } if (App::$pager['page'] < $lastpage) { $ret['next'] = z_root() . '/' . $url_parts['path'] . '?page=' . (intval(App::$pager['page']) + 1) . $extra_query_args; } if (App::$pager['page'] > 1) { $ret['prev'] = z_root() . '/' . $url_parts['path'] . '?page=' . (intval(App::$pager['page']) - 1) . $extra_query_args; } } else { $ret = [ 'id' => z_root() . '/' . $id, 'type' => $type, 'totalItems' => $total, ]; } if ($items) { $x = []; foreach ($items as $i) { $m = get_iconfig($i['id'], 'activitypub', 'rawmsg'); if ($m) { if (is_string($m)) $t = json_decode($m, true); else $t = $m; } else { $t = self::encode_activity($i); } if ($t) { $x[] = $t; } } if ($type === 'OrderedCollection') { $ret['orderedItems'] = $x; } else { $ret['items'] = $x; } } return $ret; } static function encode_follow_collection($items, $id, $type, $extra = null) { $ret = [ 'id' => z_root() . '/' . $id, 'type' => $type, 'totalItems' => count($items), ]; if ($extra) $ret = array_merge($ret, $extra); if ($items) { $x = []; foreach ($items as $i) { if ($i['xchan_url']) { $x[] = $i['xchan_url']; } } if ($type === 'OrderedCollection') $ret['orderedItems'] = $x; else $ret['items'] = $x; } return $ret; } static function encode_simple_collection($items, $id, $type, $total = 0, $extra = null) { $ret = [ 'id' => z_root() . '/' . $id, 'type' => $type, 'totalItems' => $total, ]; if ($extra) { $ret = array_merge($ret, $extra); } if ($items) { if ($type === 'OrderedCollection') { $ret['orderedItems'] = $items; } else { $ret['items'] = $items; } } return $ret; } static function encode_item($i) { $ret = []; if ($i['verb'] === ACTIVITY_FRIEND) { // Hubzilla 'make-friend' activity, no direct mapping from AS1 to AS2 - make it a note $objtype = 'Note'; } else { $objtype = self::activity_obj_mapper($i['obj_type']); } if ($i['obj']) { $ret = Activity::encode_object($i['obj']); } if (intval($i['item_deleted'])) { $ret['type'] = 'Tombstone'; $ret['formerType'] = $objtype; $ret['id'] = $i['mid']; if ($i['id'] != $i['parent']) $ret['inReplyTo'] = $i['thr_parent']; $ret['to'] = [ACTIVITY_PUBLIC_INBOX]; return $ret; } if ($i['obj']) { if (is_array($i['obj'])) { $ret = $i['obj']; } else { $ret = json_decode($i['obj'], true); } } $ret['type'] = $objtype; if ($objtype === 'Question') { if ($i['obj']) { if (is_array($i['obj'])) { $ret = $i['obj']; } else { $ret = json_decode($i['obj'], true); } if (array_path_exists('actor/id', $ret)) { $ret['actor'] = $ret['actor']['id']; } } } $ret['id'] = ((strpos($i['mid'], 'http') === 0) ? $i['mid'] : z_root() . '/item/' . urlencode($i['mid'])); $ret['diaspora:guid'] = $i['uuid']; if ($i['title']) $ret['name'] = $i['title']; $ret['published'] = datetime_convert('UTC', 'UTC', $i['created'], ATOM_TIME); if ($i['created'] !== $i['edited']) $ret['updated'] = datetime_convert('UTC', 'UTC', $i['edited'], ATOM_TIME); if ($i['expires'] > NULL_DATE) { $ret['expires'] = datetime_convert('UTC', 'UTC', $i['expires'], ATOM_TIME); } if ($i['app']) { $ret['generator'] = ['type' => 'Application', 'name' => $i['app']]; } if ($i['location'] || $i['coord']) { $ret['location'] = ['type' => 'Place']; if ($i['location']) { $ret['location']['name'] = $i['location']; } if ($i['coord']) { $l = explode(' ', $i['coord']); $ret['location']['latitude'] = $l[0]; $ret['location']['longitude'] = $l[1]; } } if (intval($i['item_wall']) && $i['mid'] === $i['parent_mid']) { $ret['commentPolicy'] = map_scope(PermissionLimits::Get($i['uid'], 'post_comments')); } if (intval($i['item_private']) === 2) { $ret['directMessage'] = true; } if (array_key_exists('comments_closed', $i) && $i['comments_closed'] !== EMPTY_STR && $i['comments_closed'] > NULL_DATE) { if ($ret['commentPolicy']) { $ret['commentPolicy'] .= ' '; } $ret['commentPolicy'] .= 'until=' . datetime_convert('UTC', 'UTC', $i['comments_closed'], ATOM_TIME); } $ret['attributedTo'] = $i['author']['xchan_url']; if ($i['id'] != $i['parent']) { $ret['inReplyTo'] = ((strpos($i['thr_parent'], 'http') === 0) ? $i['thr_parent'] : z_root() . '/item/' . urlencode($i['thr_parent'])); } if ($i['mimetype'] === 'text/bbcode') { if ($i['title']) $ret['name'] = bbcode($i['title'], ['cache' => true]); if ($i['summary']) $ret['summary'] = bbcode($i['summary'], ['cache' => true]); $ret['content'] = bbcode($i['body'], ['cache' => true]); $ret['source'] = ['content' => $i['body'], 'mediaType' => 'text/bbcode']; } $actor = self::encode_person($i['author'], false); if ($actor) $ret['actor'] = $actor; else return []; $t = self::encode_taxonomy($i); if ($t) { $ret['tag'] = $t; } $a = self::encode_attachment($i); if ($a) { $ret['attachment'] = $a; } $public = (($i['item_private']) ? false : true); $top_level = (($i['mid'] === $i['parent_mid']) ? true : false); if ($public) { $ret['to'] = [ACTIVITY_PUBLIC_INBOX]; $ret['cc'] = [z_root() . '/followers/' . substr($i['author']['xchan_addr'], 0, strpos($i['author']['xchan_addr'], '@'))]; } else { // private activity if ($top_level) { $ret['to'] = self::map_acl($i); } else { $ret['to'] = []; if ($ret['tag']) { foreach ($ret['tag'] as $mention) { if (is_array($mention) && array_key_exists('href', $mention) && $mention['href']) { $h = q("select * from hubloc where hubloc_id_url = '%s' limit 1", dbesc($mention['href']) ); if ($h) { if ($h[0]['hubloc_network'] === 'activitypub') { $addr = $h[0]['hubloc_hash']; } else { $addr = $h[0]['hubloc_id_url']; } if (!in_array($addr, $ret['to'])) { $ret['to'][] = $addr; } } } } } $d = q("select hubloc.* from hubloc left join item on hubloc_hash = owner_xchan where item.id = %d limit 1", intval($i['parent']) ); if ($d) { if ($d[0]['hubloc_network'] === 'activitypub') { $addr = $d[0]['hubloc_hash']; } else { $addr = $d[0]['hubloc_id_url']; } if (!in_array($addr, $ret['to'])) { $ret['cc'][] = $addr; } } } } $mentions = self::map_mentions($i); if (count($mentions) > 0) { if (!$ret['to']) { $ret['to'] = $mentions; } else { $ret['to'] = array_values(array_unique(array_merge($ret['to'], $mentions))); } } return $ret; } static function decode_taxonomy($item) { $ret = []; if (array_key_exists('tag', $item) && is_array($item['tag'])) { $ptr = $item['tag']; if (!array_key_exists(0, $ptr)) { $ptr = [$ptr]; } foreach ($ptr as $t) { if (!array_key_exists('type', $t)) $t['type'] = 'Hashtag'; if (array_key_exists('href', $t) && array_key_exists('name', $t)) { switch ($t['type']) { case 'Hashtag': $ret[] = ['ttype' => TERM_HASHTAG, 'url' => $t['href'], 'term' => escape_tags((substr($t['name'], 0, 1) === '#') ? substr($t['name'], 1) : $t['name'])]; break; case 'Mention': $ret[] = ['ttype' => TERM_MENTION, 'url' => $t['href'], 'term' => escape_tags((substr($t['name'], 0, 1) === '@') ? substr($t['name'], 1) : $t['name'])]; break; case 'Bookmark': $ret[] = ['ttype' => TERM_BOOKMARK, 'url' => $t['href'], 'term' => escape_tags($t['name'])]; break; default: break; } } } } return $ret; } static function encode_taxonomy($item) { $ret = []; if (array_key_exists('term', $item) && is_array($item['term'])) { foreach ($item['term'] as $t) { switch ($t['ttype']) { case TERM_HASHTAG: // href is required so if we don't have a url in the taxonomy, ignore it and keep going. if ($t['url']) { $ret[] = ['type' => 'Hashtag', 'href' => $t['url'], 'name' => '#' . $t['term']]; } break; case TERM_MENTION: $ret[] = ['type' => 'Mention', 'href' => $t['url'], 'name' => '@' . $t['term']]; break; case TERM_BOOKMARK: $ret[] = ['type' => 'Bookmark', 'href' => $t['url'], 'name' => $t['term']]; break; default: break; } } } return $ret; } static function encode_attachment($item) { $ret = []; if (array_key_exists('attach', $item)) { $atts = ((is_array($item['attach'])) ? $item['attach'] : json_decode($item['attach'], true)); if ($atts) { foreach ($atts as $att) { if (isset($att['type']) && strpos($att['type'], 'image')) { $ret[] = ['type' => 'Image', 'url' => $att['href']]; } else { $ret[] = ['type' => 'Link', 'mediaType' => $att['type'], 'href' => $att['href']]; } } } } if (array_key_exists('iconfig', $item) && is_array($item['iconfig'])) { foreach ($item['iconfig'] as $att) { if ($att['sharing']) { $value = ((is_string($att['v']) && preg_match('|^a:[0-9]+:{.*}$|s', $att['v'])) ? unserialize($att['v']) : $att['v']); $ret[] = ['type' => 'PropertyValue', 'name' => 'zot.' . $att['cat'] . '.' . $att['k'], 'value' => $value]; } } } return $ret; } static function decode_iconfig($item) { $ret = []; if (is_array($item['attachment']) && $item['attachment']) { $ptr = $item['attachment']; if (!array_key_exists(0, $ptr)) { $ptr = [$ptr]; } foreach ($ptr as $att) { $entry = []; if ($att['type'] === 'PropertyValue') { if (array_key_exists('name', $att) && $att['name']) { $key = explode('.', $att['name']); if (count($key) === 3 && $key[0] === 'zot') { $entry['cat'] = $key[1]; $entry['k'] = $key[2]; $entry['v'] = $att['value']; $entry['sharing'] = '1'; $ret[] = $entry; } } } } } return $ret; } static function decode_attachment($item) { $ret = []; if (array_key_exists('attachment', $item) && is_array($item['attachment'])) { foreach ($item['attachment'] as $att) { $entry = []; if (array_key_exists('href', $att)) $entry['href'] = $att['href']; elseif (array_key_exists('url', $att)) $entry['href'] = $att['url']; if (array_key_exists('mediaType', $att)) $entry['type'] = $att['mediaType']; elseif (array_key_exists('type', $att) && $att['type'] === 'Image') $entry['type'] = 'image/jpeg'; if ($entry) $ret[] = $entry; } } return $ret; } static function encode_activity($i, $recurse = false) { $ret = []; $reply = false; if ($i['verb'] === ACTIVITY_FRIEND) { // Hubzilla 'make-friend' activity, no direct mapping from AS1 to AS2 - make it a note $ret['obj'] = []; } $ret['type'] = self::activity_mapper($i['verb']); if (intval($i['item_deleted']) && !$recurse) { $is_response = false; if (ActivityStreams::is_response_activity($ret['type'])) { $ret['type'] = 'Undo'; $fragment = 'undo'; $is_response = true; } else { $ret['type'] = 'Delete'; $fragment = 'delete'; } $ret['id'] = str_replace('/item/', '/activity/', $i['mid']) . '#' . $fragment; $actor = self::encode_person($i['author'], false); if ($actor) $ret['actor'] = $actor; else return []; $obj = (($is_response) ? self::encode_activity($i, true) : self::encode_item($i)); if ($obj) { if (array_path_exists('object/id', $obj)) { $obj['object'] = $obj['object']['id']; } if (isset($obj['cc'])) { unset($obj['cc']); } $obj['to'] = [ACTIVITY_PUBLIC_INBOX]; $ret['object'] = $obj; } else return []; $ret['to'] = [ACTIVITY_PUBLIC_INBOX]; return $ret; } if ($ret['type'] === 'emojiReaction') { // There may not be an object for these items for legacy reasons - it should be the conversation parent. $p = q("select * from item where mid = '%s' and uid = %d", dbesc($i['parent_mid']), intval($i['uid']) ); if ($p) { xchan_query($p, true); $p = fetch_post_tags($p); $i['obj'] = self::encode_item($p[0]); // convert to zot6 emoji reaction encoding which uses the target object to indicate the // specific emoji instead of overloading the verb or type. $im = explode('#', $i['verb']); if ($im && count($im) > 1) $emoji = $im[1]; if (preg_match("/\[img(.*?)\](.*?)\[\/img\]/ism", $i['body'], $match)) { $ln = $match[2]; } $i['tgt_type'] = 'Image'; $i['target'] = [ 'type' => 'Image', 'name' => $emoji, 'url' => (($ln) ? $ln : z_root() . '/images/emoji/' . $emoji . '.png') ]; } } if (strpos($i['mid'], z_root() . '/item/') !== false) { $ret['id'] = str_replace('/item/', '/activity/', $i['mid']); } elseif (strpos($i['mid'], z_root() . '/event/') !== false) { $ret['id'] = str_replace('/event/', '/activity/', $i['mid']); } else { $ret['id'] = ((strpos($i['mid'], 'http') === 0) ? $i['mid'] : z_root() . '/activity/' . urlencode($i['mid'])); } $ret['diaspora:guid'] = $i['uuid']; if ($i['title']) $ret['name'] = html2plain(bbcode($i['title'], ['cache' => true])); if ($i['summary']) $ret['summary'] = bbcode($i['summary'], ['cache' => true]); if ($ret['type'] === 'Announce') { $tmp = preg_replace('/\[share(.*?)\[\/share\]/ism', EMPTY_STR, $i['body']); $ret['content'] = bbcode($tmp, ['cache' => true]); $ret['source'] = [ 'content' => $i['body'], 'mediaType' => 'text/bbcode' ]; } $ret['published'] = datetime_convert('UTC', 'UTC', $i['created'], ATOM_TIME); if ($i['created'] !== $i['edited']) $ret['updated'] = datetime_convert('UTC', 'UTC', $i['edited'], ATOM_TIME); if ($i['app']) { $ret['generator'] = ['type' => 'Application', 'name' => $i['app']]; } if ($i['location'] || $i['coord']) { $ret['location'] = ['type' => 'Place']; if ($i['location']) { $ret['location']['name'] = $i['location']; } if ($i['coord']) { $l = explode(' ', $i['coord']); $ret['location']['latitude'] = $l[0]; $ret['location']['longitude'] = $l[1]; } } if ($i['id'] != $i['parent']) { $reply = true; // inReplyTo needs to be set in the activity for followup actions (Like, Dislike, Announce, etc.), // but *not* for comments and RSVPs, where it should only be present in the object if (!in_array($ret['type'], ['Create', 'Update', 'Accept', 'Reject', 'TentativeAccept', 'TentativeReject'])) { $ret['inReplyTo'] = ((strpos($i['thr_parent'], 'http') === 0) ? $i['thr_parent'] : z_root() . '/item/' . urlencode($i['thr_parent'])); } } $actor = self::encode_person($i['author'], false); if ($actor) $ret['actor'] = $actor; else return []; if (strpos($i['body'], '[/share]') !== false) { $i['obj'] = null; } if ($i['obj']) { if (!is_array($i['obj'])) { $i['obj'] = json_decode($i['obj'], true); } if ($i['obj']['type'] === ACTIVITY_OBJ_PHOTO) { $i['obj']['id'] = $i['mid']; } $obj = self::encode_object($i['obj']); if ($obj) $ret['object'] = $obj; else return []; } else { $obj = self::encode_item($i); if ($obj) $ret['object'] = $obj; else return []; } if (array_path_exists('object/type', $ret) && $ret['object']['type'] === 'Event' && $ret['type'] === 'Create') { $ret['type'] = 'Invite'; } if ($i['target']) { if (!is_array($i['target'])) { $i['target'] = json_decode($i['target'], true); } $tgt = self::encode_object($i['target']); if ($tgt) $ret['target'] = $tgt; else return []; } $t = self::encode_taxonomy($i); if ($t) { $ret['tag'] = $t; } // addressing madness $public = (($i['item_private']) ? false : true); $top_level = (($reply) ? false : true); if ($public) { $ret['to'] = [ACTIVITY_PUBLIC_INBOX]; $ret['cc'] = [z_root() . '/followers/' . substr($i['author']['xchan_addr'], 0, strpos($i['author']['xchan_addr'], '@'))]; } else { // private activity if ($top_level) { $ret['to'] = self::map_acl($i); } else { $ret['to'] = []; if ($ret['tag']) { foreach ($ret['tag'] as $mention) { if (is_array($mention) && array_key_exists('href', $mention) && $mention['href']) { $h = q("select * from hubloc where hubloc_id_url = '%s' limit 1", dbesc($mention['href']) ); if ($h) { if ($h[0]['hubloc_network'] === 'activitypub') { $addr = $h[0]['hubloc_hash']; } else { $addr = $h[0]['hubloc_id_url']; } if (!in_array($addr, $ret['to'])) { $ret['to'][] = $addr; } } } } } $d = q("select hubloc.* from hubloc left join item on hubloc_hash = owner_xchan where item.id = %d limit 1", intval($i['parent']) ); if ($d) { if ($d[0]['hubloc_network'] === 'activitypub') { $addr = $d[0]['hubloc_hash']; } else { $addr = $d[0]['hubloc_id_url']; } if (!in_array($addr, $ret['to'])) { $ret['cc'][] = $addr; } } } } $mentions = self::map_mentions($i); if (count($mentions) > 0) { if (!$ret['to']) { $ret['to'] = $mentions; } else { $ret['to'] = array_values(array_unique(array_merge($ret['to'], $mentions))); } } return $ret; } // Returns an array of URLS for any mention tags found in the item array $i. static function map_mentions($i) { $list = []; if (array_key_exists('term', $i) && is_array($i['term'])) { foreach ($i['term'] as $t) { if (!$t['url']) { continue; } if ($t['ttype'] == TERM_MENTION) { $url = self::lookup_term_url($t['url']); $list[] = (($url) ? $url : $t['url']); } } } return $list; } // Returns an array of all recipients targeted by private item array $i. static function map_acl($i) { $ret = []; if (!$i['item_private']) { return $ret; } if ($i['allow_gid']) { $tmp = expand_acl($i['allow_gid']); if ($tmp) { foreach ($tmp as $t) { $ret[] = z_root() . '/lists/' . $t; } } } if ($i['allow_cid']) { $tmp = expand_acl($i['allow_cid']); $list = stringify_array($tmp, true); if ($list) { $details = q("select hubloc_id_url from hubloc where hubloc_hash in (" . $list . ") and hubloc_id_url != ''"); if ($details) { foreach ($details as $d) { $ret[] = $d['hubloc_id_url']; } } } } return $ret; } static function lookup_term_url($url) { // The xchan_url for mastodon is a text/html rendering. This is called from map_mentions where we need // to convert the mention url to an ActivityPub id. If this fails for any reason, return the url we have $r = q("select hubloc_network, hubloc_hash, hubloc_id_url from hubloc where hubloc_id_url = '%s' limit 1", dbesc($url) ); if ($r) { if ($r[0]['hubloc_network'] === 'activitypub') { return $r[0]['hubloc_hash']; } return $r[0]['hubloc_id_url']; } return $url; } static function encode_person($p, $extended = true) { if (!$p['xchan_url']) return []; if (!$extended) { return $p['xchan_url']; } $ret = []; $c = ((array_key_exists('channel_id', $p)) ? $p : channelx_by_hash($p['xchan_hash'])); $ret['type'] = 'Person'; if ($c) { $role = get_pconfig($c['channel_id'], 'system', 'permissions_role'); if (strpos($role, 'forum') !== false) { $ret['type'] = 'Group'; } } if ($c) { $ret['id'] = channel_url($c); } else { $ret['id'] = ((strpos($p['xchan_hash'], 'http') === 0) ? $p['xchan_hash'] : $p['xchan_url']); } if ($p['xchan_addr'] && strpos($p['xchan_addr'], '@')) $ret['preferredUsername'] = substr($p['xchan_addr'], 0, strpos($p['xchan_addr'], '@')); $ret['name'] = $p['xchan_name']; $ret['updated'] = datetime_convert('UTC', 'UTC', $p['xchan_name_date'], ATOM_TIME); $ret['icon'] = [ 'type' => 'Image', 'mediaType' => (($p['xchan_photo_mimetype']) ? $p['xchan_photo_mimetype'] : 'image/png'), 'updated' => datetime_convert('UTC', 'UTC', $p['xchan_photo_date'], ATOM_TIME), 'url' => $p['xchan_photo_l'], 'height' => 300, 'width' => 300, ]; /* This could be used to distinguish actors by protocol instead of tags, * array urls are not supported by some AP projects (pixelfed) though. * $ret['url'] = [ [ 'type' => 'Link', 'rel' => 'alternate', 'mediaType' => 'application/x-zot+json', 'href' => $p['xchan_url'] ], [ 'type' => 'Link', 'rel' => 'alternate', 'mediaType' => 'application/activity+json', 'href' => $p['xchan_url'] ], [ 'type' => 'Link', 'rel' => 'alternate', // 'me'? 'mediaType' => 'text/html', 'href' => $p['xchan_url'] ] ]; */ $ret['url'] = $p['xchan_url']; $ret['publicKey'] = [ 'id' => $p['xchan_url'], 'owner' => $p['xchan_url'], 'publicKeyPem' => $p['xchan_pubkey'] ]; if ($c) { $ret['tag'][] = [ 'type' => 'PropertyValue', 'name' => 'Protocol', 'value' => 'zot6' ]; $ret['outbox'] = z_root() . '/outbox/' . $c['channel_address']; } $arr = [ 'xchan' => $p, 'encoded' => $ret ]; call_hooks('encode_person', $arr); $ret = $arr['encoded']; return $ret; } static function encode_item_object($item, $elm = 'obj') { $ret = []; if ($item[$elm]) { if (!is_array($item[$elm])) { $item[$elm] = json_decode($item[$elm], true); } if ($item[$elm]['type'] === ACTIVITY_OBJ_PHOTO) { $item[$elm]['id'] = $item['mid']; } $obj = self::encode_object($item[$elm]); if ($obj) return $obj; else return []; } else { $obj = self::encode_item($item); if ($obj) return $obj; else return []; } } static function activity_mapper($verb) { if (strpos($verb, '/') === false) { return $verb; } $acts = [ 'http://activitystrea.ms/schema/1.0/post' => 'Create', 'http://activitystrea.ms/schema/1.0/share' => 'Announce', 'http://activitystrea.ms/schema/1.0/update' => 'Update', 'http://activitystrea.ms/schema/1.0/like' => 'Like', 'http://activitystrea.ms/schema/1.0/favorite' => 'Like', 'http://purl.org/zot/activity/dislike' => 'Dislike', 'http://activitystrea.ms/schema/1.0/tag' => 'Add', 'http://activitystrea.ms/schema/1.0/follow' => 'Follow', 'http://activitystrea.ms/schema/1.0/unfollow' => 'Unfollow', 'http://activitystrea.ms/schema/1.0/stop-following' => 'Unfollow', 'http://purl.org/zot/activity/attendyes' => 'Accept', 'http://purl.org/zot/activity/attendno' => 'Reject', 'http://purl.org/zot/activity/attendmaybe' => 'TentativeAccept', 'Invite' => 'Invite', 'Delete' => 'Delete', 'Undo' => 'Undo' ]; call_hooks('activity_mapper', $acts); if (array_key_exists($verb, $acts) && $acts[$verb]) { return $acts[$verb]; } // Reactions will just map to normal activities if (strpos($verb, ACTIVITY_REACT) !== false) return 'emojiReaction'; if (strpos($verb, ACTIVITY_MOOD) !== false) return 'Create'; if (strpos($verb, ACTIVITY_FRIEND) !== false) return 'Create'; if (strpos($verb, ACTIVITY_POKE) !== false) return 'Activity'; // We should return false, however this will trigger an uncaught execption and crash // the delivery system if encountered by the JSON-LDSignature library logger('Unmapped activity: ' . $verb); return 'Create'; // return false; } static function activity_decode_mapper($verb) { $acts = [ 'http://activitystrea.ms/schema/1.0/post' => 'Create', 'http://activitystrea.ms/schema/1.0/share' => 'Announce', 'http://activitystrea.ms/schema/1.0/update' => 'Update', 'http://activitystrea.ms/schema/1.0/like' => 'Like', 'http://activitystrea.ms/schema/1.0/favorite' => 'Like', 'http://purl.org/zot/activity/dislike' => 'Dislike', 'http://activitystrea.ms/schema/1.0/tag' => 'Add', 'http://activitystrea.ms/schema/1.0/follow' => 'Follow', 'http://activitystrea.ms/schema/1.0/unfollow' => 'Unfollow', 'http://activitystrea.ms/schema/1.0/stop-following' => 'Unfollow', 'http://purl.org/zot/activity/attendyes' => 'Accept', 'http://purl.org/zot/activity/attendno' => 'Reject', 'http://purl.org/zot/activity/attendmaybe' => 'TentativeAccept', 'Invite' => 'Invite', 'Delete' => 'Delete', 'Undo' => 'Undo' ]; call_hooks('activity_decode_mapper', $acts); foreach ($acts as $k => $v) { if ($verb === $v) { return $k; } } logger('Unmapped activity: ' . $verb); return 'Create'; } static function activity_obj_decode_mapper($obj) { $objs = [ 'http://activitystrea.ms/schema/1.0/note' => 'Note', 'http://activitystrea.ms/schema/1.0/note' => 'Article', 'http://activitystrea.ms/schema/1.0/comment' => 'Note', 'http://activitystrea.ms/schema/1.0/person' => 'Person', 'http://purl.org/zot/activity/profile' => 'Profile', 'http://activitystrea.ms/schema/1.0/photo' => 'Image', 'http://activitystrea.ms/schema/1.0/profile-photo' => 'Icon', 'http://activitystrea.ms/schema/1.0/event' => 'Event', 'http://purl.org/zot/activity/location' => 'Place', 'http://purl.org/zot/activity/chessgame' => 'Game', 'http://purl.org/zot/activity/tagterm' => 'zot:Tag', 'http://purl.org/zot/activity/thing' => 'Object', 'http://purl.org/zot/activity/file' => 'zot:File', 'http://purl.org/zot/activity/mood' => 'zot:Mood', 'Invite' => 'Invite', 'Question' => 'Question', 'Document' => 'Document', 'Audio' => 'Audio', 'Video' => 'Video', 'Delete' => 'Delete', 'Undo' => 'Undo' ]; call_hooks('activity_obj_decode_mapper', $objs); foreach ($objs as $k => $v) { if ($obj === $v) { return $k; } } logger('Unmapped activity object: ' . $obj); return 'Note'; } static function activity_obj_mapper($obj) { $objs = [ 'http://activitystrea.ms/schema/1.0/note' => 'Note', 'http://activitystrea.ms/schema/1.0/comment' => 'Note', 'http://activitystrea.ms/schema/1.0/person' => 'Person', 'http://purl.org/zot/activity/profile' => 'Profile', 'http://activitystrea.ms/schema/1.0/photo' => 'Image', 'http://activitystrea.ms/schema/1.0/profile-photo' => 'Icon', 'http://activitystrea.ms/schema/1.0/event' => 'Event', 'http://purl.org/zot/activity/location' => 'Place', 'http://purl.org/zot/activity/chessgame' => 'Game', 'http://purl.org/zot/activity/tagterm' => 'zot:Tag', 'http://purl.org/zot/activity/thing' => 'Object', 'http://purl.org/zot/activity/file' => 'zot:File', 'http://purl.org/zot/activity/mood' => 'zot:Mood', 'Invite' => 'Invite', 'Question' => 'Question', 'Audio' => 'Audio', 'Video' => 'Video', 'Delete' => 'Delete', 'Undo' => 'Undo' ]; call_hooks('activity_obj_mapper', $objs); if ($obj === 'Answer') { return 'Note'; } if (strpos($obj, '/') === false) { return $obj; } if (array_key_exists($obj, $objs)) { return $objs[$obj]; } logger('Unmapped activity object: ' . $obj); return 'Note'; // return false; } static function follow($channel, $act) { $contact = null; $their_follow_id = null; /* * * if $act->type === 'Follow', actor is now following $channel * if $act->type === 'Accept', actor has approved a follow request from $channel * */ if (in_array($act->type, ['Follow', 'Invite', 'Join'])) { $their_follow_id = $act->id; } $person_obj = (($act->type == 'Invite') ? $act->obj : $act->actor); if (is_array($person_obj)) { // store their xchan and hubloc self::actor_store($person_obj['id'], $person_obj); // Find any existing abook record $r = q("select * from abook left join xchan on abook_xchan = xchan_hash where abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($person_obj['id']), intval($channel['channel_id']) ); if ($r) { $contact = $r[0]; } } $x = PermissionRoles::role_perms('social'); $their_perms = Permissions::FilledPerms($x['perms_connect']); if ($contact && $contact['abook_id']) { // A relationship of some form already exists on this site. switch ($act->type) { case 'Follow': case 'Invite': case 'Join': // A second Follow request, but we haven't approved the first one if ($contact['abook_pending']) { return; } // We've already approved them or followed them first // Send an Accept back to them set_abconfig($channel['channel_id'], $person_obj['id'], 'pubcrawl', 'their_follow_id', $their_follow_id); Master::Summon(['Notifier', 'permission_accept', $contact['abook_id']]); return; case 'Accept': // They accepted our Follow request - set default permissions set_abconfig($channel['channel_id'], $contact['abook_xchan'], 'system', 'their_perms', $their_perms); $abook_instance = $contact['abook_instance']; if (strpos($abook_instance, z_root()) === false) { if ($abook_instance) $abook_instance .= ','; $abook_instance .= z_root(); q("update abook set abook_instance = '%s', abook_not_here = 0 where abook_id = %d and abook_channel = %d", dbesc($abook_instance), intval($contact['abook_id']), intval($channel['channel_id']) ); } return; default: return; } } // No previous relationship exists. if ($act->type === 'Accept') { // This should not happen unless we deleted the connection before it was accepted. return; } // From here on out we assume a Follow activity to somebody we have no existing relationship with set_abconfig($channel['channel_id'], $person_obj['id'], 'pubcrawl', 'their_follow_id', $their_follow_id); // The xchan should have been created by actor_store() above $r = q("select * from xchan where xchan_hash = '%s' and xchan_network = 'activitypub' limit 1", dbesc($person_obj['id']) ); if (!$r) { logger('xchan not found for ' . $person_obj['id']); return; } $ret = $r[0]; $p = Permissions::connect_perms($channel['channel_id']); $my_perms = $p['perms']; $automatic = $p['automatic']; $closeness = get_pconfig($channel['channel_id'], 'system', 'new_abook_closeness', 80); $r = abook_store_lowlevel( [ 'abook_account' => intval($channel['channel_account_id']), 'abook_channel' => intval($channel['channel_id']), 'abook_xchan' => $ret['xchan_hash'], 'abook_closeness' => intval($closeness), 'abook_created' => datetime_convert(), 'abook_updated' => datetime_convert(), 'abook_connected' => datetime_convert(), 'abook_dob' => NULL_DATE, 'abook_pending' => intval(($automatic) ? 0 : 1), 'abook_instance' => z_root() ] ); if ($my_perms) foreach ($my_perms as $k => $v) set_abconfig($channel['channel_id'], $ret['xchan_hash'], 'my_perms', $k, $v); if ($their_perms) foreach ($their_perms as $k => $v) set_abconfig($channel['channel_id'], $ret['xchan_hash'], 'their_perms', $k, $v); if ($r) { logger("New ActivityPub follower for {$channel['channel_name']}"); $new_connection = q("select * from abook left join xchan on abook_xchan = xchan_hash left join hubloc on hubloc_hash = xchan_hash where abook_channel = %d and abook_xchan = '%s' order by abook_created desc limit 1", intval($channel['channel_id']), dbesc($ret['xchan_hash']) ); if ($new_connection) { Enotify::submit( [ 'type' => NOTIFY_INTRO, 'from_xchan' => $ret['xchan_hash'], 'to_xchan' => $channel['channel_hash'], 'link' => z_root() . '/connedit/' . $new_connection[0]['abook_id'], ] ); if ($my_perms && $automatic) { // send an Accept for this Follow activity Master::Summon(['Notifier', 'permission_accept', $new_connection[0]['abook_id']]); // Send back a Follow notification to them Master::Summon(['Notifier', 'permission_create', $new_connection[0]['abook_id']]); } $clone = []; foreach ($new_connection[0] as $k => $v) { if (strpos($k, 'abook_') === 0) { $clone[$k] = $v; } } unset($clone['abook_id']); unset($clone['abook_account']); unset($clone['abook_channel']); $abconfig = load_abconfig($channel['channel_id'], $clone['abook_xchan']); if ($abconfig) $clone['abconfig'] = $abconfig; Libsync::build_sync_packet($channel['channel_id'], ['abook' => [$clone]]); } } /* If there is a default group for this channel and permissions are automatic, add this member to it */ if ($channel['channel_default_group'] && $automatic) { $g = Group::rec_byhash($channel['channel_id'], $channel['channel_default_group']); if ($g) Group::member_add($channel['channel_id'], '', $ret['xchan_hash'], $g['id']); } return; } static function unfollow($channel, $act) { $contact = null; /* @FIXME This really needs to be a signed request. */ /* actor is unfollowing $channel */ $person_obj = $act->actor; if (is_array($person_obj)) { $r = q("select * from abook left join xchan on abook_xchan = xchan_hash where abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($person_obj['id']), intval($channel['channel_id']) ); if ($r) { // remove all permissions they provided del_abconfig($channel['channel_id'], $r[0]['xchan_hash'], 'system', 'their_perms'); } } return; } static function actor_store($url, $person_obj, $force = false) { if (!is_array($person_obj)) { return; } /* not implemented if (array_key_exists('movedTo',$person_obj) && $person_obj['movedTo'] && ! is_array($person_obj['movedTo'])) { $tgt = self::fetch($person_obj['movedTo']); if (is_array($tgt)) { self::actor_store($person_obj['movedTo'],$tgt); ActivityPub::move($person_obj['id'],$tgt); } return; } */ $ap_hubloc = null; $hublocs = self::get_actor_hublocs($url); if ($hublocs) { foreach ($hublocs as $hub) { if ($hub['hubloc_network'] === 'activitypub') { $ap_hubloc = $hub; } if ($hub['hubloc_network'] === 'zot6') { Libzot::update_cached_hubloc($hub); } } } if ($ap_hubloc) { // we already have a stored record. Determine if it needs updating. if ($ap_hubloc['hubloc_updated'] < datetime_convert('UTC', 'UTC', ' now - 3 days') || $force) { $person_obj = self::fetch($url); } else { return; } } if (isset($person_obj['id'])) { $url = $person_obj['id']; } if (!$url) { return; } $inbox = $person_obj['inbox']; // invalid identity if (!$inbox || strpos($inbox, z_root()) !== false) { return; } // store the actor record in XConfig XConfig::Set($url, 'system', 'actor_record', $person_obj); $name = $person_obj['name']; if (!$name) { $name = $person_obj['preferredUsername']; } if (!$name) { $name = t('Unknown'); } $webfinger_addr = ''; $m = parse_url($url); if ($m) { $hostname = $m['host']; $baseurl = $m['scheme'] . '://' . $m['host'] . (($m['port']) ? ':' . $m['port'] : ''); $site_url = $m['scheme'] . '://' . $m['host']; } if (!empty($person_obj['preferredUsername']) && isset($parsed_url['host'])) { $webfinger_addr = escape_tags($person_obj['preferredUsername']) . '@' . $hostname; } $icon = z_root() . '/' . get_default_profile_photo(300); if ($person_obj['icon']) { if (is_array($person_obj['icon'])) { if (array_key_exists('url', $person_obj['icon'])) { $icon = $person_obj['icon']['url']; } else { if (is_string($person_obj['icon'][0])) { $icon = $person_obj['icon'][0]; } elseif (array_key_exists('url', $person_obj['icon'][0])) { $icon = $person_obj['icon'][0]['url']; } } } else { $icon = $person_obj['icon']; } } $links = false; $profile = false; if (is_array($person_obj['url'])) { if (!array_key_exists(0, $person_obj['url'])) { $links = [$person_obj['url']]; } else { $links = $person_obj['url']; } } if ($links) { foreach ($links as $link) { if (array_key_exists('mediaType', $link) && $link['mediaType'] === 'text/html') { $profile = $link['href']; } } if (!$profile) { $profile = $links[0]['href']; } } elseif (isset($person_obj['url']) && is_string($person_obj['url'])) { $profile = $person_obj['url']; } if (!$profile) { $profile = $url; } if (array_key_exists('publicKey', $person_obj) && array_key_exists('publicKeyPem', $person_obj['publicKey'])) { if ($person_obj['id'] === $person_obj['publicKey']['owner']) { $pubkey = $person_obj['publicKey']['publicKeyPem']; if (strstr($pubkey, 'RSA ')) { $pubkey = Keyutils::rsaToPem($pubkey); } } } $r = q("select * from xchan join hubloc on xchan_hash = hubloc_hash where xchan_hash = '%s'", dbesc($url) ); if ($r) { // Record exists. Cache existing records for one week at most // then refetch to catch updated profile photos, names, etc. $d = datetime_convert('UTC', 'UTC', 'now - 3 days'); if ($r[0]['hubloc_updated'] > $d && !$force) { return; } q("UPDATE site SET site_update = '%s', site_dead = 0 WHERE site_url = '%s'", dbesc(datetime_convert()), dbesc($site_url) ); // update existing xchan record q("update xchan set xchan_name = '%s', xchan_guid = '%s', xchan_pubkey = '%s', xchan_addr = '%s', xchan_network = 'activitypub', xchan_name_date = '%s' where xchan_hash = '%s'", dbesc(escape_tags($name)), dbesc(escape_tags($url)), dbesc(escape_tags($pubkey)), dbesc(escape_tags($webfinger_addr)), dbescdate(datetime_convert()), dbesc($url) ); // update existing hubloc record q("update hubloc set hubloc_guid = '%s', hubloc_addr = '%s', hubloc_network = 'activitypub', hubloc_url = '%s', hubloc_host = '%s', hubloc_callback = '%s', hubloc_updated = '%s', hubloc_id_url = '%s' where hubloc_hash = '%s'", dbesc(escape_tags($url)), dbesc(escape_tags($webfinger_addr)), dbesc(escape_tags($baseurl)), dbesc(escape_tags($hostname)), dbesc(escape_tags($inbox)), dbescdate(datetime_convert()), dbesc(escape_tags($profile)), dbesc($url) ); } else { // create a new record xchan_store_lowlevel( [ 'xchan_hash' => escape_tags($url), 'xchan_guid' => escape_tags($url), 'xchan_pubkey' => escape_tags($pubkey), 'xchan_addr' => $webfinger_addr, 'xchan_url' => escape_tags($profile), 'xchan_name' => escape_tags($name), 'xchan_name_date' => datetime_convert(), 'xchan_network' => 'activitypub' ] ); hubloc_store_lowlevel( [ 'hubloc_guid' => escape_tags($url), 'hubloc_hash' => escape_tags($url), 'hubloc_addr' => $webfinger_addr, 'hubloc_network' => 'activitypub', 'hubloc_url' => escape_tags($baseurl), 'hubloc_host' => escape_tags($hostname), 'hubloc_callback' => escape_tags($inbox), 'hubloc_updated' => datetime_convert(), 'hubloc_primary' => 1, 'hubloc_id_url' => escape_tags($profile) ] ); } // We store all ActivityPub actors we can resolve. Some of them may be able to communicate over Zot6. Find them. // Adding zot discovery urls to the actor record will cause federation to fail with the 20-30 projects which don't accept arrays in the url field. $actor_protocols = self::get_actor_protocols($person_obj); if (in_array('zot6', $actor_protocols)) { $zx = q("select * from hubloc where hubloc_id_url = '%s' and hubloc_network = 'zot6'", dbesc($url) ); if (!$zx && $webfinger_addr) { Master::Summon(['Gprobe', bin2hex($webfinger_addr)]); } } $photos = import_xchan_photo($icon, $url); q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s'", dbescdate(datetime_convert('UTC', 'UTC', $photos[5])), dbesc($photos[0]), dbesc($photos[1]), dbesc($photos[2]), dbesc($photos[3]), dbesc($url) ); } static function create_action($channel, $observer_hash, $act) { if (in_array($act->obj['type'], ['Note', 'Article', 'Video'])) { self::create_note($channel, $observer_hash, $act); } } static function announce_action($channel, $observer_hash, $act) { if (in_array($act->type, ['Announce'])) { self::announce_note($channel, $observer_hash, $act); } } static function like_action($channel, $observer_hash, $act) { if (in_array($act->obj['type'], ['Note', 'Article', 'Video'])) { self::like_note($channel, $observer_hash, $act); } } // sort function width decreasing static function vid_sort($a, $b) { if ($a['width'] === $b['width']) return 0; return (($a['width'] > $b['width']) ? -1 : 1); } static function create_note($channel, $observer_hash, $act) { $s = []; $is_sys_channel = is_sys_channel($channel['channel_id']); $parent = ((array_key_exists('inReplyTo', $act->obj)) ? urldecode($act->obj['inReplyTo']) : ''); if ($parent) { $r = q("select * from item where uid = %d and ( mid = '%s' or mid = '%s' ) limit 1", intval($channel['channel_id']), dbesc($parent), dbesc(basename($parent)) ); if (!$r) { logger('parent not found.'); return; } if ($r[0]['owner_xchan'] === $channel['channel_hash']) { if (!perm_is_allowed($channel['channel_id'], $observer_hash, 'send_stream') && !$is_sys_channel) { logger('no comment permission.'); return; } } $s['parent_mid'] = $r[0]['mid']; $s['owner_xchan'] = $r[0]['owner_xchan']; $s['author_xchan'] = $observer_hash; } else { if (!perm_is_allowed($channel['channel_id'], $observer_hash, 'send_stream') && !$is_sys_channel) { logger('no send_stream permission'); return; } $s['owner_xchan'] = $s['author_xchan'] = $observer_hash; } if ($act->recips && (!in_array(ACTIVITY_PUBLIC_INBOX, $act->recips))) $s['item_private'] = 1; if (array_key_exists('directMessage', $act->obj) && intval($act->obj['directMessage'])) { $s['item_private'] = 2; } if (intval($s['item_private']) === 2) { if (!perm_is_allowed($channel['channel_id'], $observer_hash, 'post_mail')) { logger('no post_mail permission'); return; } } $abook = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($observer_hash), intval($channel['channel_id']) ); $content = self::get_content($act->obj); if (!$content) { logger('no content'); return; } $s['aid'] = $channel['channel_account_id']; $s['uid'] = $channel['channel_id']; // Make sure we use the zot6 identity where applicable $s['author_xchan'] = self::find_best_identity($s['author_xchan']); $s['owner_xchan'] = self::find_best_identity($s['owner_xchan']); if (!$s['author_xchan']) { logger('No author: ' . print_r($act, true)); } if (!$s['owner_xchan']) { logger('No owner: ' . print_r($act, true)); } if (!$s['author_xchan'] || !$s['owner_xchan']) return; $s['mid'] = urldecode($act->obj['id']); $s['uuid'] = $act->obj['diaspora:guid']; $s['plink'] = urldecode($act->obj['id']); if ($act->data['published']) { $s['created'] = datetime_convert('UTC', 'UTC', $act->data['published']); } elseif ($act->obj['published']) { $s['created'] = datetime_convert('UTC', 'UTC', $act->obj['published']); } if ($act->data['updated']) { $s['edited'] = datetime_convert('UTC', 'UTC', $act->data['updated']); } elseif ($act->obj['updated']) { $s['edited'] = datetime_convert('UTC', 'UTC', $act->obj['updated']); } if ($act->data['expires']) { $s['expires'] = datetime_convert('UTC', 'UTC', $act->data['expires']); } elseif ($act->obj['expires']) { $s['expires'] = datetime_convert('UTC', 'UTC', $act->obj['expires']); } if (!$s['created']) $s['created'] = datetime_convert(); if (!$s['edited']) $s['edited'] = $s['created']; if (!$s['parent_mid']) $s['parent_mid'] = $s['mid']; $s['title'] = self::bb_content($content, 'name'); $s['summary'] = self::bb_content($content, 'summary'); $s['body'] = self::bb_content($content, 'content'); $s['verb'] = ACTIVITY_POST; $s['obj_type'] = ACTIVITY_OBJ_NOTE; $generator = $act->get_property_obj('generator'); if (!$generator) $generator = $act->get_property_obj('generator', $act->obj); if ($generator && array_key_exists('type', $generator) && in_array($generator['type'], ['Application', 'Service']) && array_key_exists('name', $generator)) { $s['app'] = escape_tags($generator['name']); } if ($channel['channel_system']) { if (!MessageFilter::evaluate($s, get_config('system', 'pubstream_incl'), get_config('system', 'pubstream_excl'))) { logger('post is filtered'); return; } } if ($abook) { if (!post_is_importable($s, $abook[0])) { logger('post is filtered'); return; } } if ($act->obj['conversation']) { set_iconfig($s, 'ostatus', 'conversation', $act->obj['conversation'], 1); } $a = self::decode_taxonomy($act->obj); if ($a) { $s['term'] = $a; } $a = self::decode_attachment($act->obj); if ($a) { $s['attach'] = $a; } if ($act->obj['type'] === 'Note' && $s['attach']) { $s['body'] .= self::bb_attach($s['attach'], $s['body']); } // we will need a hook here to extract magnet links e.g. peertube // right now just link to the largest mp4 we find that will fit in our // standard content region if ($act->obj['type'] === 'Video') { $vtypes = [ 'video/mp4', 'video/ogg', 'video/webm' ]; $mps = []; if (array_key_exists('url', $act->obj) && is_array($act->obj['url'])) { foreach ($act->obj['url'] as $vurl) { if (in_array($vurl['mimeType'], $vtypes)) { if (!array_key_exists('width', $vurl)) { $vurl['width'] = 0; } $mps[] = $vurl; } } } if ($mps) { usort($mps, [__CLASS__, 'vid_sort']); foreach ($mps as $m) { if (intval($m['width']) < 500) { $s['body'] .= "\n\n" . '[video]' . $m['href'] . '[/video]'; break; } } } } set_iconfig($s, 'activitypub', 'recips', $act->raw_recips); if ($parent) { set_iconfig($s, 'activitypub', 'rawmsg', $act->raw, 1); } $x = null; $r = q("select created, edited from item where mid = '%s' and uid = %d limit 1", dbesc($s['mid']), intval($s['uid']) ); if ($r) { if ($s['edited'] > $r[0]['edited']) { $x = item_store_update($s); } else { return; } } else { $x = item_store($s); } if (is_array($x) && $x['item_id']) { if ($parent) { if ($s['owner_xchan'] === $channel['channel_hash']) { // We are the owner of this conversation, so send all received comments back downstream Master::Summon(['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'], $x['item_id']); } } static function get_actor_bbmention($id) { $x = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_hash = '%s' or hubloc_id_url = '%s' limit 1", dbesc($id), dbesc($id) ); if ($x) { return sprintf('@[zrl=%s]%s[/zrl]', $x[0]['xchan_url'], $x[0]['xchan_name']); } return '@{' . $id . '}'; } static function update_poll($item, $post) { $multi = false; $mid = $post['mid']; $content = $post['title']; if (!$item) { return false; } $o = json_decode($item['obj'], true); if ($o && array_key_exists('anyOf', $o)) { $multi = true; } $r = q("select mid, title from item where parent_mid = '%s' and author_xchan = '%s'", dbesc($item['mid']), dbesc($post['author_xchan']) ); // prevent any duplicate votes by same author for oneOf and duplicate votes with same author and same answer for anyOf if ($r) { if ($multi) { foreach ($r as $rv) { if ($rv['title'] === $content && $rv['mid'] !== $mid) { return false; } } } else { foreach ($r as $rv) { if ($rv['mid'] !== $mid) { return false; } } } } $answer_found = false; $found = false; if ($multi) { for ($c = 0; $c < count($o['anyOf']); $c++) { if ($o['anyOf'][$c]['name'] === $content) { $answer_found = true; if (is_array($o['anyOf'][$c]['replies'])) { foreach ($o['anyOf'][$c]['replies'] as $reply) { if (is_array($reply) && array_key_exists('id', $reply) && $reply['id'] === $mid) { $found = true; } } } if (!$found) { $o['anyOf'][$c]['replies']['totalItems']++; $o['anyOf'][$c]['replies']['items'][] = ['id' => $mid, 'type' => 'Note']; } } } } else { for ($c = 0; $c < count($o['oneOf']); $c++) { if ($o['oneOf'][$c]['name'] === $content) { $answer_found = true; if (is_array($o['oneOf'][$c]['replies'])) { foreach ($o['oneOf'][$c]['replies'] as $reply) { if (is_array($reply) && array_key_exists('id', $reply) && $reply['id'] === $mid) { $found = true; } } } if (!$found) { $o['oneOf'][$c]['replies']['totalItems']++; $o['oneOf'][$c]['replies']['items'][] = ['id' => $mid, 'type' => 'Note']; } } } } logger('updated_poll: ' . print_r($o, true), LOGGER_DATA); if ($answer_found && !$found) { q("update item set obj = '%s', edited = '%s' where id = %d", dbesc(json_encode($o)), dbesc(datetime_convert()), intval($item['id']) ); Master::Summon(['Notifier', 'wall-new', $item['id']]); return true; } return false; } static function decode_note($act) { // Within our family of projects, Follow/Unfollow of a thread is an internal activity which should not be transmitted, // hence if we receive it - ignore or reject it. // Unfollow is not defined by ActivityStreams, which prefers Undo->Follow. // This may have to be revisited if AP projects start using Follow for objects other than actors. if (in_array($act->type, ['Follow', 'Unfollow'])) { return false; } $response_activity = false; $s = []; if (is_array($act->obj)) { $content = self::get_content($act->obj); } $s['owner_xchan'] = $act->actor['id']; $s['author_xchan'] = $act->actor['id']; // ensure we store the original actor self::actor_store($act->actor['id'], $act->actor); $s['mid'] = $act->obj['id']; $s['uuid'] = $act->obj['diaspora:guid']; $s['parent_mid'] = $act->parent_id; if (array_key_exists('published', $act->data)) { $s['created'] = datetime_convert('UTC', 'UTC', $act->data['published']); $s['commented'] = $s['created']; } elseif (array_key_exists('published', $act->obj)) { $s['created'] = datetime_convert('UTC', 'UTC', $act->obj['published']); $s['commented'] = $s['created']; } if (array_key_exists('updated', $act->data)) { $s['edited'] = datetime_convert('UTC', 'UTC', $act->data['updated']); } elseif (array_key_exists('updated', $act->obj)) { $s['edited'] = datetime_convert('UTC', 'UTC', $act->obj['updated']); } if (array_key_exists('expires', $act->data)) { $s['expires'] = datetime_convert('UTC', 'UTC', $act->data['expires']); } elseif (array_key_exists('expires', $act->obj)) { $s['expires'] = datetime_convert('UTC', 'UTC', $act->obj['expires']); } if (ActivityStreams::is_response_activity($act->type)) { $response_activity = true; $s['mid'] = $act->id; // $s['parent_mid'] = $act->obj['id']; $s['uuid'] = $act->data['diaspora:guid']; // over-ride the object timestamp with the activity if ($act->data['published']) { $s['created'] = datetime_convert('UTC', 'UTC', $act->data['published']); } if ($act->data['updated']) { $s['edited'] = datetime_convert('UTC', 'UTC', $act->data['updated']); } $obj_actor = ((isset($act->obj['actor'])) ? $act->obj['actor'] : $act->get_actor('attributedTo', $act->obj)); // ensure we store the original actor self::actor_store($obj_actor['id'], $obj_actor); $mention = self::get_actor_bbmention($obj_actor['id']); if ($act->type === 'Like') { $content['content'] = sprintf(t('Likes %1$s\'s %2$s'), $mention, $act->obj['type']) . "\n\n" . $content['content']; } if ($act->type === 'Dislike') { $content['content'] = sprintf(t('Doesn\'t like %1$s\'s %2$s'), $mention, $act->obj['type']) . "\n\n" . $content['content']; } // handle event RSVPs if (($act->obj['type'] === 'Event') || ($act->obj['type'] === 'Invite' && array_path_exists('object/type', $act->obj) && $act->obj['object']['type'] === 'Event')) { if ($act->type === 'Accept') { $content['content'] = sprintf(t('Will attend %s\'s event'), $mention) . EOL . EOL . $content['content']; } if ($act->type === 'Reject') { $content['content'] = sprintf(t('Will not attend %s\'s event'), $mention) . EOL . EOL . $content['content']; } if ($act->type === 'TentativeAccept') { $content['content'] = sprintf(t('May attend %s\'s event'), $mention) . EOL . EOL . $content['content']; } if ($act->type === 'TentativeReject') { $content['content'] = sprintf(t('May not attend %s\'s event'), $mention) . EOL . EOL . $content['content']; } } if ($act->type === 'Announce') { $content['content'] = sprintf(t('🔁 Repeated %1$s\'s %2$s'), $mention, $act->obj['type']); } if ($act->type === 'emojiReaction') { $content['content'] = (($act->tgt && $act->tgt['type'] === 'Image') ? '[img=32x32]' . $act->tgt['url'] . '[/img]' : '&#x' . $act->tgt['name'] . ';'); } } if (!array_key_exists('created', $s)) $s['created'] = datetime_convert(); if (!array_key_exists('edited', $s)) $s['edited'] = $s['created']; $s['title'] = (($response_activity) ? EMPTY_STR : self::bb_content($content, 'name')); $s['summary'] = self::bb_content($content, 'summary'); $s['body'] = ((self::bb_content($content, 'bbcode') && (!$response_activity)) ? self::bb_content($content, 'bbcode') : self::bb_content($content, 'content')); $s['verb'] = self::activity_decode_mapper($act->type); // Mastodon does not provide update timestamps when updating poll tallies which means race conditions may occur here. if ($act->type === 'Update' && $act->obj['type'] === 'Question' && $s['edited'] === $s['created']) { $s['edited'] = datetime_convert(); } if (in_array($act->type, ['Delete', 'Undo', 'Tombstone']) || ($act->type === 'Create' && $act->obj['type'] === 'Tombstone')) { $s['item_deleted'] = 1; } $s['obj_type'] = self::activity_obj_decode_mapper($act->obj['type']); if ($s['obj_type'] === ACTIVITY_OBJ_NOTE && $s['mid'] !== $s['parent_mid']) { $s['obj_type'] = ACTIVITY_OBJ_COMMENT; } $eventptr = null; if ($act->obj['type'] === 'Invite' && array_path_exists('object/type', $act->obj) && $act->obj['object']['type'] === 'Event') { $eventptr = $act->obj['object']; $s['mid'] = $s['parent_mid'] = $act->obj['id']; } if ($act->obj['type'] === 'Event') { if ($act->type === 'Invite') { $s['mid'] = $s['parent_mid'] = $act->id; } $eventptr = $act->obj; } if ($eventptr) { $s['obj'] = []; $s['obj']['asld'] = $eventptr; $s['obj']['type'] = ACTIVITY_OBJ_EVENT; $s['obj']['id'] = $eventptr['id']; $s['obj']['title'] = $eventptr['name']; if (strpos($act->obj['startTime'], 'Z')) $s['obj']['adjust'] = true; else $s['obj']['adjust'] = false; $s['obj']['dtstart'] = datetime_convert('UTC', 'UTC', $eventptr['startTime']); if ($act->obj['endTime']) $s['obj']['dtend'] = datetime_convert('UTC', 'UTC', $eventptr['endTime']); else $s['obj']['nofinish'] = true; $s['obj']['description'] = $eventptr['content']; if (array_path_exists('location/content', $eventptr)) $s['obj']['location'] = $eventptr['location']['content']; } else { $s['obj'] = $act->obj; } $generator = $act->get_property_obj('generator'); if ((!$generator) && (!$response_activity)) { $generator = $act->get_property_obj('generator', $act->obj); } if ($generator && array_key_exists('type', $generator) && in_array($generator['type'], ['Application', 'Service']) && array_key_exists('name', $generator)) { $s['app'] = escape_tags($generator['name']); } if (!$response_activity) { $a = self::decode_taxonomy($act->obj); if ($a) { $s['term'] = $a; foreach ($a as $b) { if ($b['ttype'] === TERM_EMOJI) { $s['title'] = str_replace($b['term'], '[img=16x16]' . $b['url'] . '[/img]', $s['title']); $s['summary'] = str_replace($b['term'], '[img=16x16]' . $b['url'] . '[/img]', $s['summary']); $s['body'] = str_replace($b['term'], '[img=16x16]' . $b['url'] . '[/img]', $s['body']); } } } } $a = self::decode_attachment($act->obj); if ($a) { $s['attach'] = $a; } $a = self::decode_iconfig($act->obj); if ($a) { $s['iconfig'] = $a; } if (array_key_exists('type', $act->obj)) { if ($act->obj['type'] === 'Note' && $s['attach']) { $s['body'] .= self::bb_attach($s['attach'], $s['body']); } if ($act->obj['type'] === 'Question' && in_array($act->type, ['Create', 'Update'])) { if (array_key_exists('endTime', $act->obj)) { $s['comments_closed'] = datetime_convert('UTC', 'UTC', $act->obj['endTime']); } } } if (array_key_exists('closed', $act->obj)) { $s['comments_closed'] = datetime_convert('UTC', 'UTC', $act->obj['closed']); } // we will need a hook here to extract magnet links e.g. peertube // right now just link to the largest mp4 we find that will fit in our // standard content region if (!$response_activity) { if ($act->obj['type'] === 'Video') { $vtypes = [ 'video/mp4', 'video/ogg', 'video/webm' ]; $mps = []; $ptr = null; if (array_key_exists('url', $act->obj)) { if (is_array($act->obj['url'])) { if (array_key_exists(0, $act->obj['url'])) { $ptr = $act->obj['url']; } else { $ptr = [$act->obj['url']]; } foreach ($ptr as $vurl) { // peertube uses the non-standard element name 'mimeType' here if (array_key_exists('mimeType', $vurl)) { if (in_array($vurl['mimeType'], $vtypes)) { if (!array_key_exists('width', $vurl)) { $vurl['width'] = 0; } $mps[] = $vurl; } } elseif (array_key_exists('mediaType', $vurl)) { if (in_array($vurl['mediaType'], $vtypes)) { if (!array_key_exists('width', $vurl)) { $vurl['width'] = 0; } $mps[] = $vurl; } } } } if ($mps) { usort($mps, [__CLASS__, 'vid_sort']); foreach ($mps as $m) { if (intval($m['width']) < 500 && self::media_not_in_body($m['href'], $s['body'])) { $s['body'] .= "\n\n" . '[video]' . $m['href'] . '[/video]'; break; } } } elseif (is_string($act->obj['url']) && self::media_not_in_body($act->obj['url'], $s['body'])) { $s['body'] .= "\n\n" . '[video]' . $act->obj['url'] . '[/video]'; } } } if ($act->obj['type'] === 'Audio') { $atypes = [ 'audio/mpeg', 'audio/ogg', 'audio/wav' ]; $ptr = null; if (array_key_exists('url', $act->obj)) { if (is_array($act->obj['url'])) { if (array_key_exists(0, $act->obj['url'])) { $ptr = $act->obj['url']; } else { $ptr = [$act->obj['url']]; } foreach ($ptr as $vurl) { if (in_array($vurl['mediaType'], $atypes) && self::media_not_in_body($vurl['href'], $s['body'])) { $s['body'] .= "\n\n" . '[audio]' . $vurl['href'] . '[/audio]'; break; } } } elseif (is_string($act->obj['url']) && self::media_not_in_body($act->obj['url'], $s['body'])) { $s['body'] .= "\n\n" . '[audio]' . $act->obj['url'] . '[/audio]'; } } } if ($act->obj['type'] === 'Image' && strpos($s['body'], 'zrl=') === false) { $ptr = null; if (array_key_exists('url', $act->obj)) { if (is_array($act->obj['url'])) { if (array_key_exists(0, $act->obj['url'])) { $ptr = $act->obj['url']; } else { $ptr = [$act->obj['url']]; } foreach ($ptr as $vurl) { if (strpos($s['body'], $vurl['href']) === false) { $bb_imgs = '[zmg]' . $vurl['href'] . '[/zmg]' . "\n\n"; break; } } $s['body'] = $bb_imgs . $s['body']; } elseif (is_string($act->obj['url'])) { if (strpos($s['body'], $act->obj['url']) === false) { $s['body'] .= '[zmg]' . $act->obj['url'] . '[/zmg]' . "\n\n" . $s['body']; } } } } if ($act->obj['type'] === 'Page' && !$s['body']) { $ptr = null; $purl = EMPTY_STR; if (array_key_exists('url', $act->obj)) { if (is_array($act->obj['url'])) { if (array_key_exists(0, $act->obj['url'])) { $ptr = $act->obj['url']; } else { $ptr = [$act->obj['url']]; } foreach ($ptr as $vurl) { if (array_key_exists('mediaType', $vurl) && $vurl['mediaType'] === 'text/html') { $purl = $vurl['href']; break; } elseif (array_key_exists('mimeType', $vurl) && $vurl['mimeType'] === 'text/html') { $purl = $vurl['href']; break; } } } elseif (is_string($act->obj['url'])) { $purl = $act->obj['url']; } if ($purl) { $li = z_fetch_url(z_root() . '/linkinfo?binurl=' . bin2hex($purl)); if ($li['success'] && $li['body']) { $s['body'] .= "\n" . $li['body']; } else { $s['body'] .= "\n\n" . $purl; } } } } } if (in_array($act->obj['type'], ['Note', 'Article', 'Page'])) { $ptr = null; if (array_key_exists('url', $act->obj)) { if (is_array($act->obj['url'])) { if (array_key_exists(0, $act->obj['url'])) { $ptr = $act->obj['url']; } else { $ptr = [$act->obj['url']]; } foreach ($ptr as $vurl) { if (array_key_exists('mediaType', $vurl) && $vurl['mediaType'] === 'text/html') { $s['plink'] = $vurl['href']; break; } } } elseif (is_string($act->obj['url'])) { $s['plink'] = $act->obj['url']; } } } if (!$s['plink']) { $s['plink'] = $s['mid']; } // assume this is private unless specifically told otherwise. $s['item_private'] = 1; if ($act->recips && in_array(ACTIVITY_PUBLIC_INBOX, $act->recips)) { $s['item_private'] = 0; } if (is_array($act->obj)) { if (array_key_exists('directMessage', $act->obj) && intval($act->obj['directMessage'])) { $s['item_private'] = 2; } } set_iconfig($s, 'activitypub', 'recips', $act->raw_recips); $parent = (($s['parent_mid'] && $s['parent_mid'] === $s['mid']) ? true : false); if ($parent) { set_iconfig($s, 'activitypub', 'rawmsg', $act->raw, 1); } $hookinfo = [ 'act' => $act, 's' => $s ]; call_hooks('decode_note', $hookinfo); $s = $hookinfo['s']; return $s; } static function store($channel, $observer_hash, $act, $item, $fetch_parents = true, $force = false) { $is_sys_channel = is_sys_channel($channel['channel_id']); $is_child_node = false; // TODO: not implemented // Pleroma scrobbles can be really noisy and contain lots of duplicate activities. Disable them by default. /*if (($act->type === 'Listen') && ($is_sys_channel || get_pconfig($channel['channel_id'], 'system', 'allow_scrobbles', false))) { return; }*/ // TODO: this his handled in pubcrawl atm. // very unpleasant and imperfect way of determining a Mastodon DM /*if ($act->raw_recips && array_key_exists('to',$act->raw_recips) && is_array($act->raw_recips['to']) && count($act->raw_recips['to']) === 1 && $act->raw_recips['to'][0] === channel_url($channel) && ! $act->raw_recips['cc']) { $item['item_private'] = 2; }*/ if ($item['parent_mid'] && $item['parent_mid'] !== $item['mid']) { $is_child_node = true; } $allowed = false; // TODO: not implemented // $permit_mentions = intval(PConfig::Get($channel['channel_id'], 'system','permit_all_mentions') && i_am_mentioned($channel,$item)); if ($is_child_node) { $p = q("select * from item where mid = '%s' and uid = %d and item_wall = 1", dbesc($item['parent_mid']), intval($channel['channel_id']) ); if ($p) { // set the owner to the owner of the parent $item['owner_xchan'] = $p[0]['owner_xchan']; // check permissions against the author, not the sender $allowed = perm_is_allowed($channel['channel_id'], $item['author_xchan'], 'post_comments'); if ((!$allowed)/* && $permit_mentions*/) { if ($p[0]['owner_xchan'] === $channel['channel_hash']) { $allowed = false; } else { $allowed = true; } } // TODO: not implemented /*if (absolutely_no_comments($p[0])) { $allowed = false; }*/ if (!$allowed) { logger('rejected comment from ' . $item['author_xchan'] . ' for ' . $channel['channel_address']); logger('rejected: ' . print_r($item, true), LOGGER_DATA); // TODO: not implemented // let the sender know we received their comment but we don't permit spam here. // self::send_rejection_activity($channel,$item['author_xchan'],$item); return; } // TODO: not implemented /*if (perm_is_allowed($channel['channel_id'],$item['author_xchan'],'moderated')) { $item['item_blocked'] = ITEM_MODERATED; }*/ } else { $allowed = true; // reject public stream comments that weren't sent by the conversation owner if ($is_sys_channel && $item['owner_xchan'] !== $observer_hash && !$fetch_parents) { $allowed = false; } } if ($p && $p[0]['obj_type'] === 'Question') { if ($item['obj_type'] === 'Note' && $item['title'] && (!$item['content'])) { $item['obj_type'] = 'Answer'; } } } else { // The $item['item_fetched'] flag is set in fetch_and_store_parents(). // In this case we should check against author permissions because sender is not owner. if (perm_is_allowed($channel['channel_id'], (($item['item_fetched']) ? $item['author_xchan'] : $observer_hash), 'send_stream') || $is_sys_channel) { $allowed = true; } // TODO: not implemented /*if ($permit_mentions) { $allowed = true; }*/ } if (tgroup_check($channel['channel_id'], $item) && (!$is_child_node)) { // for forum deliveries, make sure we keep a copy of the signed original set_iconfig($item, 'activitypub', 'rawmsg', $act->raw, 1); $allowed = true; } if (intval($item['item_private']) === 2) { if (!perm_is_allowed($channel['channel_id'], $observer_hash, 'post_mail')) { $allowed = false; } } if ($is_sys_channel) { /* TODO: not implemented if (! check_pubstream_channelallowed($observer_hash)) { $allowed = false; } // don't allow pubstream posts if the sender even has a clone on a pubstream denied site $h = q("select hubloc_url from hubloc where hubloc_hash = '%s'", dbesc($observer_hash) ); if ($h) { foreach ($h as $hub) { if (! check_pubstream_siteallowed($hub['hubloc_url'])) { $allowed = false; break; } } } */ if (intval($item['item_private'])) { $allowed = false; } } // TODO: not implemented /*$blocked = LibBlock::fetch($channel['channel_id'],BLOCKTYPE_SERVER); if ($blocked) { foreach($blocked as $b) { if (strpos($observer_hash,$b['block_entity']) !== false) { $allowed = false; } } }*/ if (!$allowed && !$force) { logger('no permission'); return; } $item['aid'] = $channel['channel_account_id']; $item['uid'] = $channel['channel_id']; // Some authors may be zot6 authors in which case we want to store their nomadic identity // instead of their ActivityPub identity $item['author_xchan'] = self::find_best_identity($item['author_xchan']); $item['owner_xchan'] = self::find_best_identity($item['owner_xchan']); if (!$item['author_xchan']) { logger('No author: ' . print_r($act, true)); } if (!$item['owner_xchan']) { logger('No owner: ' . print_r($act, true)); } if (!$item['author_xchan'] || !$item['owner_xchan']) 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 (array_key_exists('conversation', $act->obj)) { set_iconfig($item, 'ostatus', 'conversation', $act->obj['conversation'], 1); } // This isn't perfect but the best we can do for now. $item['comment_policy'] = ((isset($act->data['commentPolicy'])) ? $act->data['commentPolicy'] : 'authenticated'); set_iconfig($item, 'activitypub', 'recips', $act->raw_recips); // TODO: inheritPrivacy should probably be set in encode activity. Zap does not do so yet - check what this is about if (!(isset($act->data['inheritPrivacy']) && $act->data['inheritPrivacy'])) { if ($item['item_private']) { $item['item_restrict'] = $item['item_restrict'] & 1; if ($is_child_node) { $item['allow_cid'] = '<' . $channel['channel_hash'] . '>'; $item['allow_gid'] = $item['deny_cid'] = $item['deny_gid'] = ''; } logger('restricted'); } } if (intval($act->sigok)) { $item['item_verified'] = 1; } $parent = null; if ($is_child_node) { $parent = q("select * from item where mid = '%s' and uid = %d limit 1", dbesc($item['parent_mid']), intval($item['uid']) ); if (!$parent) { if (!plugin_is_installed('pubcrawl')) { return; } else { $fetch = false; // TODO: debug // if (perm_is_allowed($channel['channel_id'],$observer_hash,'send_stream') && (PConfig::Get($channel['channel_id'],'system','hyperdrive',true) || $act->type === 'Announce')) { if (perm_is_allowed($channel['channel_id'], $observer_hash, 'send_stream') || $is_sys_channel) { $fetch = (($fetch_parents) ? self::fetch_and_store_parents($channel, $observer_hash, $item, $force) : false); } if ($fetch) { $parent = q("select * from item where mid = '%s' and uid = %d limit 1", dbesc($item['parent_mid']), intval($item['uid']) ); } else { logger('no parent'); return; } } } if ($parent[0]['parent_mid'] !== $item['parent_mid']) { $item['thr_parent'] = $item['parent_mid']; } else { $item['thr_parent'] = $parent[0]['parent_mid']; } $item['parent_mid'] = $parent[0]['parent_mid']; } // TODO: not implemented // self::rewrite_mentions($item); $r = q("select id, created, edited from item where mid = '%s' and uid = %d limit 1", dbesc($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 ($fetch_parents && $parent && !intval($parent[0]['item_private'])) { logger('topfetch', LOGGER_DEBUG); // if the thread owner is a connnection, we will already receive any additional comments to their posts // but if they are not we can try to fetch others in the background $x = q("SELECT abook.*, xchan.* FROM abook left join xchan on abook_xchan = xchan_hash WHERE abook_channel = %d and abook_xchan = '%s' LIMIT 1", intval($channel['channel_id']), dbesc($parent[0]['owner_xchan']) ); if (!$x) { // determine if the top-level post provides a replies collection if ($parent[0]['obj']) { $parent[0]['obj'] = json_decode($parent[0]['obj'], true); } logger('topfetch: ' . print_r($parent[0], true), LOGGER_ALL); $id = ((array_path_exists('obj/replies/id', $parent[0])) ? $parent[0]['obj']['replies']['id'] : false); if (!$id) { $id = ((array_path_exists('obj/replies', $parent[0]) && is_string($parent[0]['obj']['replies'])) ? $parent[0]['obj']['replies'] : false); } if ($id) { Master::Summon(['Convo', $id, $channel['channel_id'], $observer_hash]); } } } if (is_array($x) && $x['item_id']) { if ($is_child_node) { if ($item['owner_xchan'] === $channel['channel_hash']) { // We are the owner of this conversation, so send all received comments back downstream Master::Summon(['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, $observer_hash, $item, $force = false) { logger('fetching parents'); $p = []; $current_item = $item; while ($current_item['parent_mid'] !== $current_item['mid']) { $n = self::fetch($current_item['parent_mid'], $channel); if (!$n) { break; } $a = new ActivityStreams($n); if ($a->type === 'Announce' && is_array($a->obj) && array_key_exists('object', $a->obj) && array_key_exists('actor', $a->obj)) { // This is a relayed/forwarded Activity (as opposed to a shared/boosted object) // Reparse the encapsulated Activity and use that instead logger('relayed activity', LOGGER_DEBUG); $a = new ActivityStreams($a->obj); } logger($a->debug(), LOGGER_DATA); if (!$a->is_valid()) { logger('not a valid activity'); break; } $item = Activity::decode_note($a); if (!$item) { break; } $hookinfo = [ 'a' => $a, 'item' => $item ]; call_hooks('fetch_and_store', $hookinfo); $item = $hookinfo['item']; if ($item) { $item['item_fetched'] = 1; if (intval($channel['channel_system']) && intval($item['item_private'])) { $p = []; break; } if (count($p) > 100) { $p = []; break; } array_unshift($p, [$a, $item]); if ($item['parent_mid'] === $item['mid']) { break; } } $current_item = $item; } if ($p) { foreach ($p as $pv) { if ($pv[0]->is_valid()) { Activity::store($channel, $observer_hash, $pv[0], $pv[1], false, $force); } } return true; } return false; } /* static public function fetch_and_store_parents($channel, $item) { logger('fetching parents'); $p = []; $current_item = $item; while ($current_item['parent_mid'] !== $current_item['mid']) { $n = self::fetch($current_item['parent_mid'], $channel); if (!$n) { break; } $a = new ActivityStreams($n); //logger($a->debug()); if (!$a->is_valid()) { break; } if (is_array($a->actor) && array_key_exists('id', $a->actor)) { self::actor_store($a->actor['id'], $a->actor); } $replies = null; if (isset($a->obj['replies']['first']['items'])) { $replies = $a->obj['replies']['first']['items']; // we already have this one array_diff($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; } $hookinfo = [ 'a' => $a, 'item' => $item ]; call_hooks('fetch_and_store', $hookinfo); $item = $hookinfo['item']; if ($item) { array_unshift($p, [$a, $item, $replies]); if ($item['parent_mid'] === $item['mid'] || count($p) > 20) { break; } } $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, $arr) { logger('fetching replies'); logger(print_r($arr, true)); $p = []; foreach ($arr as $url) { $n = self::fetch($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; } $hookinfo = [ 'a' => $a, 'item' => $item ]; call_hooks('fetch_and_store', $hookinfo); $item = $hookinfo['item']; if ($item) { 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 = []; $is_sys_channel = is_sys_channel($channel['channel_id']); if (!perm_is_allowed($channel['channel_id'], $observer_hash, 'send_stream') && !$is_sys_channel) { logger('no permission'); return; } $content = self::get_content($act->obj); if (!$content) { logger('no content'); return; } $s['owner_xchan'] = $s['author_xchan'] = $observer_hash; $s['aid'] = $channel['channel_account_id']; $s['uid'] = $channel['channel_id']; $s['mid'] = urldecode($act->obj['id']); $s['plink'] = urldecode($act->obj['id']); if (!$s['created']) $s['created'] = datetime_convert(); if (!$s['edited']) $s['edited'] = $s['created']; $s['parent_mid'] = $s['mid']; $s['verb'] = ACTIVITY_POST; $s['obj_type'] = ACTIVITY_OBJ_NOTE; $s['app'] = t('ActivityPub'); if ($channel['channel_system']) { if (!MessageFilter::evaluate($s, 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($s, $abook[0])) { logger('post is filtered'); return; } } if ($act->obj['conversation']) { set_iconfig($s, 'ostatus', 'conversation', $act->obj['conversation'], 1); } $a = self::decode_taxonomy($act->obj); if ($a) { $s['term'] = $a; } $a = self::decode_attachment($act->obj); if ($a) { $s['attach'] = $a; } $body = "[share author='" . urlencode($act->sharee['name']) . "' profile='" . $act->sharee['url'] . "' avatar='" . $act->sharee['photo_s'] . "' link='" . ((is_array($act->obj['url'])) ? $act->obj['url']['href'] : $act->obj['url']) . "' auth='" . ((is_matrix_url($act->obj['url'])) ? 'true' : 'false') . "' posted='" . $act->obj['published'] . "' message_id='" . $act->obj['id'] . "']"; if ($content['name']) $body .= self::bb_content($content, 'name') . "\r\n"; $body .= self::bb_content($content, 'content'); if ($act->obj['type'] === 'Note' && $s['attach']) { $body .= self::bb_attach($s['attach'], $body); } $body .= "[/share]"; $s['title'] = self::bb_content($content, 'name'); $s['body'] = $body; if ($act->recips && (!in_array(ACTIVITY_PUBLIC_INBOX, $act->recips))) $s['item_private'] = 1; set_iconfig($s, 'activitypub', 'recips', $act->raw_recips); $r = q("select created, edited from item where mid = '%s' and uid = %d limit 1", dbesc($s['mid']), intval($s['uid']) ); if ($r) { if ($s['edited'] > $r[0]['edited']) { $x = item_store_update($s); } else { return; } } else { $x = item_store($s); } if (is_array($x) && $x['item_id']) { if ($s['owner_xchan'] === $channel['channel_hash']) { // We are the owner of this conversation, so send all received comments back downstream Master::Summon(['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) { $s = []; $parent = $act->obj['id']; if ($act->type === 'Like') $s['verb'] = ACTIVITY_LIKE; if ($act->type === 'Dislike') $s['verb'] = ACTIVITY_DISLIKE; if (!$parent) return; $r = q("select * from item where uid = %d and ( mid = '%s' or mid = '%s' ) limit 1", intval($channel['channel_id']), dbesc($parent), dbesc(urldecode(basename($parent))) ); if (!$r) { logger('parent not found.'); return; } xchan_query($r); $parent_item = $r[0]; if ($parent_item['owner_xchan'] === $channel['channel_hash']) { if (!perm_is_allowed($channel['channel_id'], $observer_hash, 'post_comments')) { logger('no comment permission.'); return; } } if ($parent_item['mid'] === $parent_item['parent_mid']) { $s['parent_mid'] = $parent_item['mid']; } else { $s['thr_parent'] = $parent_item['mid']; $s['parent_mid'] = $parent_item['parent_mid']; } $s['owner_xchan'] = $parent_item['owner_xchan']; $s['author_xchan'] = $observer_hash; $s['aid'] = $channel['channel_account_id']; $s['uid'] = $channel['channel_id']; $s['mid'] = $act->id; if (!$s['parent_mid']) $s['parent_mid'] = $s['mid']; $post_type = (($parent_item['resource_type'] === 'photo') ? t('photo') : t('post')); $links = [['rel' => 'alternate', 'type' => 'text/html', 'href' => $parent_item['plink']]]; $objtype = (($parent_item['resource_type'] === 'photo') ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE); $z = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($parent_item['author_xchan']) ); if ($z) $item_author = $z[0]; $object = json_encode([ 'type' => $post_type, 'id' => $parent_item['mid'], 'parent' => (($parent_item['thr_parent']) ? $parent_item['thr_parent'] : $parent_item['parent_mid']), 'link' => $links, 'title' => $parent_item['title'], 'content' => $parent_item['body'], 'created' => $parent_item['created'], 'edited' => $parent_item['edited'], 'author' => [ 'name' => $item_author['xchan_name'], 'address' => $item_author['xchan_addr'], 'guid' => $item_author['xchan_guid'], 'guid_sig' => $item_author['xchan_guid_sig'], 'link' => [ ['rel' => 'alternate', 'type' => 'text/html', 'href' => $item_author['xchan_url']], ['rel' => 'photo', 'type' => $item_author['xchan_photo_mimetype'], 'href' => $item_author['xchan_photo_m']]], ], ], JSON_UNESCAPED_SLASHES ); if ($act->type === 'Like') $bodyverb = t('%1$s likes %2$s\'s %3$s'); if ($act->type === 'Dislike') $bodyverb = t('%1$s doesn\'t like %2$s\'s %3$s'); $ulink = '[url=' . $item_author['xchan_url'] . ']' . $item_author['xchan_name'] . '[/url]'; $alink = '[url=' . $parent_item['author']['xchan_url'] . ']' . $parent_item['author']['xchan_name'] . '[/url]'; $plink = '[url=' . z_root() . '/display/' . urlencode($act->id) . ']' . $post_type . '[/url]'; $s['body'] = sprintf($bodyverb, $ulink, $alink, $plink); $s['app'] = t('ActivityPub'); // set the route to that of the parent so downstream hubs won't reject it. $s['route'] = $parent_item['route']; $s['item_private'] = $parent_item['item_private']; $s['obj_type'] = $objtype; $s['obj'] = $object; if ($act->obj['conversation']) { set_iconfig($s, 'ostatus', 'conversation', $act->obj['conversation'], 1); } if ($act->recips && (!in_array(ACTIVITY_PUBLIC_INBOX, $act->recips))) $s['item_private'] = 1; set_iconfig($s, 'activitypub', 'recips', $act->raw_recips); $result = item_store($s); if ($result['success']) { // if the message isn't already being relayed, notify others if (intval($parent_item['item_origin'])) Master::Summon(['Notifier', 'comment-import', $result['item_id']]); sync_an_item($channel['channel_id'], $result['item_id']); } return; } static function bb_attach($attach, $body) { $ret = false; foreach ($attach as $a) { if (array_key_exists('type', $a) && stripos($a['type'], 'image') !== false) { if (self::media_not_in_body($a['href'], $body)) { $ret .= "\n\n" . '[img]' . $a['href'] . '[/img]'; } } if (array_key_exists('type', $a) && stripos($a['type'], 'video') !== false) { if (self::media_not_in_body($a['href'], $body)) { $ret .= "\n\n" . '[video]' . $a['href'] . '[/video]'; } } if (array_key_exists('type', $a) && stripos($a['type'], 'audio') !== false) { if (self::media_not_in_body($a['href'], $body)) { $ret .= "\n\n" . '[audio]' . $a['href'] . '[/audio]'; } } } return $ret; } // check for the existence of existing media link in body static function media_not_in_body($s, $body) { if ((strpos($body, ']' . $s . '[/img]') === false) && (strpos($body, ']' . $s . '[/zmg]') === false) && (strpos($body, ']' . $s . '[/video]') === false) && (strpos($body, ']' . $s . '[/audio]') === false)) { return true; } return false; } static function bb_content($content, $field) { require_once('include/html2bbcode.php'); require_once('include/event.php'); $ret = false; if (array_key_exists($field, $content)) { if (is_array($content[$field])) { foreach ($content[$field] as $k => $v) { $ret .= html2bbcode($v); // save this for auto-translate or dynamic filtering // $ret .= '[language=' . $k . ']' . html2bbcode($v) . '[/language]'; } } else { if ($field === 'bbcode' && array_key_exists('bbcode', $content)) { $ret = $content[$field]; } else { $ret = html2bbcode($content[$field]); } } } if ($field === 'content' && array_key_exists('event', $content) && (!strpos($ret, '[event'))) { $ret .= format_event_bbcode($content['event']); } return $ret; } static function get_content($act) { $content = []; $event = null; if ((!$act) || (!is_array($act))) { return $content; } if ($act['type'] === 'Event') { $adjust = false; $event = []; $event['event_hash'] = $act['id']; if (array_key_exists('startTime', $act) && strpos($act['startTime'], -1, 1) === 'Z') { $adjust = true; $event['adjust'] = 1; $event['dtstart'] = datetime_convert('UTC', 'UTC', $event['startTime'] . (($adjust) ? '' : 'Z')); } if (array_key_exists('endTime', $act)) { $event['dtend'] = datetime_convert('UTC', 'UTC', $event['endTime'] . (($adjust) ? '' : 'Z')); } else { $event['nofinish'] = true; } } foreach (['name', 'summary', 'content'] as $a) { if (($x = self::get_textfield($act, $a)) !== false) { $content[$a] = $x; } } if ($event) { $event['summary'] = $content['name']; if (!$event['summary']) { if ($content['summary']) { $event['summary'] = html2plain($content['summary']); } } $event['description'] = html2bbcode($content['content']); if ($event['summary'] && $event['dtstart']) { $content['event'] = $event; } } if (array_path_exists('source/mediaType', $act) && array_path_exists('source/content', $act)) { if ($act['source']['mediaType'] === 'text/bbcode') { $content['bbcode'] = purify_html($act['source']['content']); } } return $content; } static function get_textfield($act, $field) { $content = false; if (array_key_exists($field, $act) && $act[$field]) $content = purify_html($act[$field]); elseif (array_key_exists($field . 'Map', $act) && $act[$field . 'Map']) { foreach ($act[$field . 'Map'] as $k => $v) { $content[escape_tags($k)] = purify_html($v); } } return $content; } // Find either an Authorization: Bearer token or 'token' request variable // in the current web request and return it static function token_from_request() { foreach (['REDIRECT_REMOTE_USER', 'HTTP_AUTHORIZATION'] as $s) { $auth = ((array_key_exists($s, $_SERVER) && strpos($_SERVER[$s], 'Bearer ') === 0) ? str_replace('Bearer ', EMPTY_STR, $_SERVER[$s]) : EMPTY_STR ); if ($auth) { break; } } if (!$auth) { if (array_key_exists('token', $_REQUEST) && $_REQUEST['token']) { $auth = $_REQUEST['token']; } } return $auth; } static function find_best_identity($xchan) { if (filter_var($xchan, FILTER_VALIDATE_URL)) { $r = q("SELECT hubloc_hash, hubloc_network FROM hubloc WHERE hubloc_id_url = '%s' AND hubloc_network IN ('zot6', 'activitypub') AND hubloc_deleted = 0", dbesc($xchan) ); if ($r) { $r = Libzot::zot_record_preferred($r); logger('find_best_identity: ' . $xchan . ' > ' . $r['hubloc_hash']); return $r['hubloc_hash']; } } return $xchan; } static function get_cached_actor($id) { $actor = XConfig::Get($id, 'system', 'actor_record'); if ($actor) { return $actor; } // try other get_cached_actor providers (e.g. diaspora) $hookdata = [ 'id' => $id, 'actor' => false ]; call_hooks('get_cached_actor_provider', $hookdata); return $hookdata['actor']; } static function get_actor_hublocs($url, $options = 'all') { switch ($options) { case 'activitypub': $hublocs = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_hash = '%s' and hubloc_deleted = 0 ", dbesc($url) ); break; case 'zot6': $hublocs = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_id_url = '%s' and hubloc_deleted = 0 ", dbesc($url) ); break; case 'all': default: $hublocs = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where ( hubloc_id_url = '%s' OR hubloc_hash = '%s' ) and hubloc_deleted = 0 ", dbesc($url), dbesc($url) ); break; } return $hublocs; } static function get_actor_collections($url) { $ret = []; $actor_record = XConfig::Get($url, 'system', 'actor_record'); if (!$actor_record) { return $ret; } foreach (['inbox', 'outbox', 'followers', 'following'] as $collection) { if (isset($actor_record[$collection]) && $actor_record[$collection]) { $ret[$collection] = $actor_record[$collection]; } } if (array_path_exists('endpoints/sharedInbox', $actor_record) && $actor_record['endpoints']['sharedInbox']) { $ret['sharedInbox'] = $actor_record['endpoints']['sharedInbox']; } return $ret; } static function get_actor_protocols($actor) { $ret = []; if (!array_key_exists('tag', $actor) || empty($actor['tag']) || !is_array($actor['tag'])) { return $ret; } foreach ($tag as $t) { if ((isset($t['type']) && $t['type'] === 'PropertyValue') && (isset($t['name']) && $t['name'] === 'Protocol') && (isset($t['value']) && in_array($t['value'], ['zot6', 'activitypub', 'diaspora'])) ) { $ret[] = $t['value']; } } return $ret; } }