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);
$start_timestamp = microtime(true);
$x = z_fetch_url($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($y, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES), LOGGER_DEBUG);
if (isset($y['type']) && ActivityStreams::is_an_actor($y['type'])) {
logger('logger_stats_data cmd:Actor_fetch' . ' start:' . $start_timestamp . ' ' . 'end:' . microtime(true) . ' meta:' . $url . '#' . random_string(16));
btlogger('actor fetch');
$y['actor_cache_date'] = datetime_convert();
XConfig::Set($y['id'], 'system', 'actor_record', $y);
}
else {
logger('logger_stats_data cmd:Activity_fetch' . ' start:' . $start_timestamp . ' ' . 'end:' . microtime(true) . ' meta:' . $url . '#' . random_string(16));
btlogger('activity fetch');
}
return json_decode($x['body'], true);
}
else {
logger('fetch failed: ' . $url);
logger($x['body']);
}
return null;
}
static function fetch_person($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_profile($x) {
if (isset($x['describes'])) {
return $x;
}
return [];
}
static function fetch_thing($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 [];
$channel = channelx_by_n($r[0]['obj_channel']);
$x = [
'type' => 'Page',
'id' => z_root() . '/thing/' . $r[0]['obj_obj'],
'name' => $channel['channel_name'] . ' ' . $r[0]['obj_verb'] . ' ' . $r[0]['obj_term'],
'content' => $r[0]['obj_url'],
'url' => $r[0]['obj_url']
];
if ($r[0]['obj_imgurl']) {
$x['content'] = '![' . $r[0]['obj_term'] . '](' . $r[0]['obj_imgurl'] . ')
';
$x['icon'] = [
'type' => 'Image',
'url' => $r[0]['obj_imgurl']
];
}
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($r[0]['verb'], ['Create', 'Invite']) && in_array($r[0]['obj_type'], ['Event', 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 > App::$pager['itemspage']) {
$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) {
$m = IConfig::Get($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 = [];
$objtype = self::activity_obj_mapper($i['obj_type']);
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 $ret;
}
if (isset($i['obj']) && $i['obj']) {
if (is_array($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'];
$images = [];
$audios = [];
$videos = [];
$has_images = preg_match_all('/\[[zi]mg(.*?)](.*?)\[/ism', $i['body'], $images, PREG_SET_ORDER);
$has_audios = preg_match_all('/\[zaudio](.*?)\[/ism', $i['body'], $audios, PREG_SET_ORDER);
$has_videos = preg_match_all('/\[zvideo](.*?)\[/ism', $i['body'], $videos, PREG_SET_ORDER);
// provide ocap access token for private media.
// set this for descendants even if the current item is not private
// because it may have been relayed from a private item.
$token = IConfig::Get($i, 'ocap', 'relay');
$matches_processed = [];
if ($token && $has_images) {
for ($n = 0; $n < count($images); $n++) {
$match = $images[$n];
if (str_starts_with($match[1], '=http') && str_contains($match[1], z_root() . '/photo/') && !in_array($match[1], $matches_processed)) {
$i['body'] = str_replace($match[1], $match[1] . '?token=' . $token, $i['body']);
$images[$n][2] = substr($match[1], 1) . '?token=' . $token;
$matches_processed[] = $match[1];
} elseif (str_contains($match[2], z_root() . '/photo/') && !in_array($match[2], $matches_processed)) {
$i['body'] = str_replace($match[2], $match[2] . '?token=' . $token, $i['body']);
$images[$n][2] = $match[2] . '?token=' . $token;
$matches_processed[] = $match[2];
}
}
}
if ($token && $has_audios) {
for ($n = 0; $n < count($audios); $n++) {
$match = $audios[$n];
if (str_contains($match[1], z_root() . '/attach/') && !in_array($match[1], $matches_processed)) {
$i['body'] = str_replace($match[1], $match[1] . '?token=' . $token, $i['body']);
$audios[$n][1] = $match[1] . '?token=' . $token;
$matches_processed[] = $match[1];
}
}
}
if ($token && $has_videos) {
for ($n = 0; $n < count($videos); $n++) {
$match = $videos[$n];
if (str_contains($match[1], z_root() . '/attach/') && !in_array($match[1], $matches_processed)) {
$i['body'] = str_replace($match[1], $match[1] . '?token=' . $token, $i['body']);
$videos[$n][1] = $match[1] . '?token=' . $token;
$matches_processed[] = $match[1];
}
}
}
if ($i['title'])
$ret['name'] = unescape_tags($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'])) {
$ret['commentPolicy'] = map_scope(PermissionLimits::Get($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);
}
$ret['attributedTo'] = self::encode_person($i['author'], false);
if ($i['mid'] !== $i['parent_mid']) {
$ret['inReplyTo'] = ((strpos($i['thr_parent'], 'http') === 0) ? $i['thr_parent'] : z_root() . '/item/' . urlencode($i['thr_parent']));
}
if ($i['mimetype'] === 'text/bbcode') {
if ($i['title'])
$ret['name'] = unescape_tags($i['title']);
if ($i['summary'])
$ret['summary'] = unescape_tags($i['summary']);
$ret['content'] = bbcode(unescape_tags($i['body']), ['cache' => true]);
$ret['source'] = ['content' => unescape_tags($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'] = $a;
}
if (intval($i['item_private']) === 0) {
$ret['to'] = [ACTIVITY_PUBLIC_INBOX];
}
$hookinfo = [
'item' => $i,
'encoded' => $ret
];
call_hooks('encode_item', $hookinfo);
return $hookinfo['encoded'];
}
static function decode_taxonomy($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 $t) {
if (is_array($t) && !array_key_exists('type', $t))
$t['type'] = 'Hashtag';
if (is_array($t) && (array_key_exists('href', $t) || array_key_exists('id', $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;
case 'Emoji':
$ret[] = ['ttype' => TERM_EMOJI, 'url' => $t['id'], 'term' => escape_tags($t['name']), 'imgurl' => $t['icon']['url']];
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;
case TERM_EMOJI:
$ret[] = ['type' => 'Emoji', 'id' => $t['url'], 'name' => $t['term'], 'icon' => ['type' => 'Image', 'url' => $t['imgurl']]];
break;
default:
break;
}
}
}
return $ret;
}
static function encode_attachment($item, $iconfig = false) {
$ret = [];
$token = IConfig::Get($item, 'ocap', 'relay');
if (!$iconfig && 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'], $att['href'])) {
continue;
}
if (str_starts_with($att['type'], 'image')) {
$ret[] = ['type' => 'Image', 'mediaType' => $att['type'], 'name' => $att['title'], 'url' => $att['href'] . (($token) ? '?token=' . $token : '')];
}
elseif (str_starts_with($att['type'], 'audio')) {
$ret[] = ['type' => 'Audio', 'mediaType' => $att['type'], 'name' => $att['title'], 'url' => $att['href'] . (($token) ? '?token=' . $token : '')];
}
elseif (str_starts_with($att['type'], 'video')) {
$ret[] = ['type' => 'Video', 'mediaType' => $att['type'], 'name' => $att['title'], 'url' => $att['href'] . (($token) ? '?token=' . $token : '')];
}
else {
$ret[] = ['type' => 'Link', 'mediaType' => $att['type'], 'name' => $att['title'], 'href' => $att['href'] . (($token) ? '?token=' . $token : '')];
}
}
}
}
if ($iconfig && 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) {
$ret = [];
if (isset($item['attachment'])) {
$ptr = $item['attachment'];
if (!array_key_exists(0, $ptr)) {
$ptr = [$ptr];
}
foreach ($ptr as $att) {
$entry = [];
if (isset($att['type']) && $att['type'] === 'PropertyValue') {
if (isset($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 $ret;
}
public static function decode_attachment($item) {
$ret = [];
if (isset($item['attachment']) && is_array($item['attachment'])) {
$ptr = $item['attachment'];
if (!array_key_exists(0, $ptr)) {
$ptr = [$ptr];
}
foreach ($ptr as $att) {
if (!is_array($att)) {
continue;
}
$entry = [];
if (array_key_exists('href', $att) && $att['href']) {
$entry['href'] = $att['href'];
} elseif (array_key_exists('url', $att) && $att['url']) {
$entry['href'] = $att['url'];
}
if (array_key_exists('mediaType', $att) && $att['mediaType']) {
$entry['type'] = $att['mediaType'];
} elseif (array_key_exists('type', $att) && $att['type'] === 'Image') {
$entry['type'] = 'image/jpeg';
}
if (array_key_exists('name', $att) && $att['name']) {
$entry['name'] = html2plain(purify_html($att['name']), 256);
}
// Friendica attachments don't match the URL in the body.
// This makes it more difficult to detect image duplication in bb_attach()
// which adds images to plaintext microblog software. For these we need to examine both the
// url and image properties.
if (isset($att['image']) && is_string($att['image']) && isset($att['url']) && $att['image'] !== $att['url']) {
$entry['image'] = $att['image'];
}
if ($entry) {
array_unshift($ret, $entry);
}
}
} elseif (isset($item['attachment']) && is_string($item['attachment'])) {
btlogger('not an array: ' . $item['attachment']);
}
return $ret;
}
static function encode_activity($i, $recurse = false) {
$ret = [];
$reply = false;
$ret['type'] = self::activity_mapper($i['verb']);
if ((isset($i['item_deleted']) && intval($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'] = $i['uuid'];
if (isset($i['title']) && $i['title'])
$ret['name'] = html2plain(bbcode($i['title'], ['cache' => true]));
if (isset($i['summary']) && $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', $i['created'], ATOM_TIME);
if (isset($i['created'], $i['edited']) && $i['created'] !== $i['edited']) {
$ret['updated'] = datetime_convert('UTC', 'UTC', $i['edited'], ATOM_TIME);
if ($ret['type'] === 'Create') {
$ret['type'] = 'Update';
}
}
if (isset($i['app']) && $i['app']) {
$ret['generator'] = ['type' => 'Application', 'name' => $i['app']];
}
if (!empty($i['location']) || !empty($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['mid'] !== $i['parent_mid']) {
$reply = true;
// inReplyTo needs to be set in the activity for followup actions (Like, Dislike, Announce, etc.),
// but *not* for comments and RSVPs, where it should only be present in the object
if (!in_array($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'] = $actor;
else
return [];
if (isset($i['obj']) && $i['obj']) {
if (!is_array($i['obj'])) {
$i['obj'] = json_decode($i['obj'], true);
}
if (in_array($i['obj']['type'], ['Image', 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') {
$ret['type'] = 'Invite';
}
if (isset($i['target']) && $i['target']) {
if (!is_array($i['target'])) {
$i['target'] = json_decode($i['target'], true);
}
$tgt = self::encode_object($i['target']);
if ($tgt)
$ret['target'] = $tgt;
else
return [];
}
/* this should not be needed
$t = self::encode_taxonomy($i);
if ($t) {
$ret['tag'] = $t;
}
*/
$a = self::encode_attachment($i, true);
if ($a) {
$ret['attachment'] = $a;
}
if (intval($i['item_private']) === 0) {
$ret['to'] = [ACTIVITY_PUBLIC_INBOX];
}
$hookinfo = [
'item' => $i,
'encoded' => $ret
];
call_hooks('encode_activity', $hookinfo);
return $hookinfo['encoded'];
}
// 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, hubloc_hash, hubloc_network from hubloc where hubloc_hash in (" . $list . ") and hubloc_id_url != '' and hubloc_deleted = 0");
if ($details) {
foreach ($details as $d) {
if ($d['hubloc_network'] === 'activitypub') {
$ret[] = $d['hubloc_hash'];
} else {
$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) {
$ret = (($extended) ? [] : '');
if (!is_array($p)) {
return $ret;
}
$c = ((array_key_exists('channel_id', $p)) ? $p : channelx_by_hash($p['xchan_hash']));
$id = (($c) ? channel_url($c) : ((filter_var($p['xchan_hash'], FILTER_VALIDATE_URL)) ? $p['xchan_hash'] : $p['xchan_url']));
if (!$id) {
return $ret;
}
if (!$extended) {
return $id;
}
$ret['type'] = 'Person';
if ($c) {
if (PConfig::Get($c['channel_id'], 'system', 'group_actor')) {
$ret['type'] = 'Group';
}
$ret['manuallyApprovesFollowers'] = ((PConfig::Get($c['channel_id'], 'system', 'autoperms')) ? false : true);
}
$ret['id'] = $id;
$ret['preferredUsername'] = (($c) ? $c['channel_address'] : substr($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' => $p['xchan_photo_l'] . '?rev=' . strtotime($p['xchan_photo_date']),
'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'] = $id;
$ret['publicKey'] = [
'id' => $id,
'owner' => $id,
'signatureAlgorithm' => 'http://www.w3.org/2001/04/xmldsig-more#rsa-sha256',
'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 (in_array($item[$elm]['type'], ['Image', 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',
];
call_hooks('activity_mapper', $acts);
if (array_key_exists($verb, $acts) && $acts[$verb]) {
return $acts[$verb];
}
// 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',
'Announce' => 'Announce',
'Invite' => 'Invite',
'Delete' => 'Delete',
'Undo' => 'Undo',
'Add' => 'Add',
'Remove' => 'Remove'
];
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'
];
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);
// 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];
}
}
$role = PConfig::Get($channel['channel_id'], 'system', 'permissions_role', 'personal');
$x = PermissionRoles::role_perms($role);
$their_perms = Permissions::FilledPerms($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 ($contact['abook_pending']) {
return;
}
// We've already approved them or followed them first
// Send an Accept back to them
AbConfig::Set($channel['channel_id'], $person_obj['id'], 'pubcrawl', 'their_follow_id', $their_follow_id);
Master::Summon(['Notifier', 'permission_accept', $contact['abook_id']]);
return;
case 'Accept':
// They accepted our Follow request.
// Set default permissions except for send_stream and post_wall
foreach ($their_perms as $k => $v) {
if(in_array($k, ['send_stream', 'post_wall'])) {
continue; // Those will be set once we accept their follow request
}
AbConfig::Set($channel['channel_id'], $contact['abook_xchan'], 'their_perms', $k, $v);
}
$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 ($act->type === 'Accept') {
// This should not happen unless we deleted the connection before it was accepted.
return;
}
// From here on out we assume a Follow activity to somebody we have no existing relationship with
AbConfig::Set($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'];
$closeness = PConfig::Get($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 => $v)
AbConfig::Set($channel['channel_id'], $ret['xchan_hash'], 'my_perms', $k, $v);
if ($their_perms)
foreach ($their_perms as $k => $v)
AbConfig::Set($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() . '/connections#' . $new_connection[0]['abook_id'],
]
);
if ($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']);
$abconfig = AbConfig::Load($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) {
$g = AccessList::by_hash($channel['channel_id'], $channel['channel_default_group']);
if ($g)
AccessList::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
AbConfig::Delete($channel['channel_id'], $r[0]['xchan_hash'], 'system', 'their_perms');
}
}
return;
}
public static function drop($channel, $observer, $act) {
$r = q("select * from item where mid = '%s' and uid = %d limit 1",
dbesc((is_array($act->obj)) ? $act->obj['id'] : $act->obj),
intval($channel['channel_id'])
);
if (!$r) {
return;
}
if (in_array($observer, [$r[0]['author_xchan'], $r[0]['owner_xchan']])) {
drop_item($r[0]['id'], false, (($r[0]['item_wall']) ? DROPITEM_PHASE1 : DROPITEM_NORMAL));
} elseif (in_array($act->actor['id'], [$r[0]['author_xchan'], $r[0]['owner_xchan']])) {
drop_item($r[0]['id'], false, (($r[0]['item_wall']) ? DROPITEM_PHASE1 : DROPITEM_NORMAL));
}
sync_an_item($channel['channel_id'], $r[0]['id']);
if ($r[0]['item_wall']) {
Master::Summon(['Notifier', 'drop', $r[0]['id']]);
}
}
static function actor_store($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($tgt)) {
self::actor_store($tgt);
ActivityPub::move($person_obj['id'],$tgt);
}
return;
}
*/
$url = $person_obj['id'] ?? '';
if (!$url) {
return;
}
$hublocs = self::get_actor_hublocs($url);
$has_zot_hubloc = false;
$ap_hubloc = null;
if ($hublocs) {
foreach ($hublocs as $hub) {
if ($hub['hubloc_network'] === 'activitypub') {
$ap_hubloc = $hub;
}
if ($hub['hubloc_network'] === 'zot6') {
$has_zot_hubloc = true;
Libzot::update_cached_hubloc($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) {
$person_obj = self::get_actor($url, $force);
}
else {
return;
}
}
$inbox = $person_obj['inbox'] ?? null;
// invalid AP identity
if (!$inbox || strpos($inbox, z_root()) !== false) {
return;
}
$name = $person_obj['name'] ?? '';
if (!$name) {
$name = $person_obj['preferredUsername'] ?? '';
}
if (!$name) {
$name = t('Unknown');
}
$webfinger_addr = ((isset($person_obj['webfinger'])) ? str_replace('acct:', '', $person_obj['webfinger']) : '');
$hostname = '';
$baseurl = '';
$site_url = '';
$m = parse_url($url);
if ($m) {
$hostname = $m['host'];
$baseurl = $m['scheme'] . '://' . $m['host'] . ((isset($m['port'])) ? ':' . $m['port'] : '');
$site_url = $m['scheme'] . '://' . $m['host'];
}
if (!$webfinger_addr && !empty($person_obj['preferredUsername']) && $hostname) {
$webfinger_addr = escape_tags($person_obj['preferredUsername']) . '@' . $hostname;
}
$icon = null;
if (isset($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;
$profile = false;
if (isset($person_obj['url']) && is_array($person_obj['url'])) {
if (!array_key_exists(0, $person_obj['url'])) {
$links = [$person_obj['url']];
}
else {
$links = $person_obj['url'];
}
}
if (is_array($links) && $links) {
foreach ($links as $link) {
if (is_array($link) && array_key_exists('mediaType', $link) && $link['mediaType'] === 'text/html') {
$profile = $link['href'];
} elseif (is_string($link)) {
$profile = $link;
break;
}
}
if (!$profile && isset($links[0]['href'])) {
$profile = $links[0]['href'];
}
}
elseif (isset($person_obj['url']) && is_string($person_obj['url'])) {
$profile = $person_obj['url'];
}
if (!$profile) {
$profile = $url;
}
$pubkey = '';
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);
}
}
}
$epubkey = '';
if (isset($person_obj['assertionMethod'])) {
if (!isset($person_obj['assertionMethod'][0])) {
$person_obj['assertionMethod'] = [$person_obj['assertionMethod']];
}
foreach($person_obj['assertionMethod'] as $am) {
if ($person_obj['id'] === $am['controller'] &&
$am['type'] === 'Multikey' &&
str_starts_with($am['publicKeyMultibase'], 'z6Mk')
) {
$epubkey = $am['publicKeyMultibase'];
}
}
}
$group_actor = ($person_obj['type'] === 'Group');
$r = q("select * from xchan join hubloc on xchan_hash = hubloc_hash where xchan_hash = '%s'",
dbesc($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($site_url)
);
// update existing xchan record
q("update xchan set xchan_name = '%s', xchan_pubkey = '%s', xchan_epubkey = '%s', xchan_addr = '%s', xchan_network = 'activitypub', xchan_name_date = '%s', xchan_pubforum = %d where xchan_hash = '%s'",
dbesc($name),
dbesc($pubkey),
dbesc($epubkey),
dbesc($webfinger_addr),
dbescdate(datetime_convert()),
intval($group_actor),
dbesc($url)
);
// update existing hubloc record
q("update hubloc set hubloc_addr = '%s', hubloc_network = 'activitypub', hubloc_url = '%s', hubloc_host = '%s', hubloc_callback = '%s', hubloc_updated = '%s', hubloc_id_url = '%s' where hubloc_hash = '%s'",
dbesc($webfinger_addr),
dbesc($baseurl),
dbesc($hostname),
dbesc($inbox),
dbescdate(datetime_convert()),
dbesc($profile),
dbesc($url)
);
}
else {
// create a new record
xchan_store_lowlevel(
[
'xchan_hash' => $url,
'xchan_guid' => $url,
'xchan_pubkey' => $pubkey,
'xchan_epubkey' => $epubkey,
'xchan_addr' => $webfinger_addr,
'xchan_url' => $profile,
'xchan_name' => $name,
'xchan_photo_l' => z_root() . '/' . get_default_profile_photo(),
'xchan_photo_m' => z_root() . '/' . get_default_profile_photo(80),
'xchan_photo_s' => z_root() . '/' . get_default_profile_photo(48),
'xchan_name_date' => datetime_convert(),
'xchan_network' => 'activitypub',
'xchan_pubforum' => intval($group_actor)
]
);
hubloc_store_lowlevel(
[
'hubloc_guid' => $url,
'hubloc_hash' => $url,
'hubloc_addr' => $webfinger_addr,
'hubloc_network' => 'activitypub',
'hubloc_url' => $baseurl,
'hubloc_host' => $hostname,
'hubloc_callback' => $inbox,
'hubloc_updated' => datetime_convert(),
'hubloc_primary' => 1,
'hubloc_id_url' => $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 (!$has_zot_hubloc && in_array('zot6', $actor_protocols)) {
$zx = q("select * from hubloc where hubloc_id_url = '%s' and hubloc_network = 'zot6'",
dbesc($url)
);
if (!$zx) {
// FIXME: we might need to fetch and store this url immediately
// otherwise at least the first post of a yet unknown author might
// be stored with the activitypub url instead of the portable id.
// Another solution could be to fix the items after Gprobe has done its work.
Master::Summon(['Gprobe', bin2hex($url)]);
}
}
if ($icon) {
Master::Summon(['Xchan_photo', bin2hex($icon), bin2hex($url), $force]);
}
}
// sort function width decreasing
static function vid_sort($a, $b) {
$a_width = $a['width'] ?? 0;
$b_width = $b['width'] ?? 0;
if ($a_width === $b_width)
return 0;
return (($a_width > $b_width) ? -1 : 1);
}
static function get_actor_bbmention($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_id, $post) {
$multi = false;
$mid = $post['mid'];
$content = $post['title'];
if (!$item_id) {
return false;
}
if (intval($post['item_blocked']) === ITEM_MODERATED) {
return false;
}
dbq("START TRANSACTION");
$item = q("SELECT * FROM item WHERE id = %d FOR UPDATE",
intval($item_id)
);
if (!$item) {
dbq("COMMIT");
return false;
}
$item = $item[0];
$o = json_decode($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) {
$u = q("update item set obj = '%s', edited = '%s' where id = %d",
dbesc(json_encode($o)),
dbesc(datetime_convert()),
intval($item['id'])
);
if ($u) {
dbq("COMMIT");
if ($multi) {
// wait some seconds for possible multiple answers to be processed
// before calling the notifier
sleep(3);
}
Master::Summon(['Notifier', 'wall-new', $item['id']]);
return true;
}
dbq("ROLLBACK");
}
dbq("COMMIT");
return false;
}
static function decode_note($act) {
$response_activity = false;
$s = [];
// These activities should have been handled separately in the Inbox module and should not be turned into posts
if (
in_array($act->type, ['Follow', 'Accept', 'Reject', 'Create', 'Update']) &&
($act->objprop('type') === 'Follow' || ActivityStreams::is_an_actor($act->objprop('type')))
) {
return false;
}
// 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($act->type, ['Follow', 'Unfollow'])) {
return false;
}
if (!isset($act->actor['id'])) {
logger('No actor!');
return false;
}
// ensure we store the original actor
self::actor_store($act->actor);
$s['owner_xchan'] = $act->actor['id'];
$s['author_xchan'] = $act->actor['id'];
$content = [];
if (is_array($act->obj)) {
$content = self::get_content($act->obj);
}
$s['mid'] = $act->objprop('id');
if (!$s['mid'] && is_string($act->obj)) {
$s['mid'] = $act->obj;
}
// pleroma fetched activities
if (!$s['mid'] && isset($act->obj['data']['id'])) {
$s['mid'] = $act->obj['data']['id'];
}
if ($act->objprop('type') === 'Profile') {
$s['mid'] = $act->id;
}
if (!$s['mid']) {
return false;
}
// Friendica sends the diaspora guid in a nonstandard field via AP
// If no uuid is provided we will create an uuid v5 from the mid
$s['uuid'] = (($act->objprop('diaspora:guid')) ?: uuid_from_url($s['mid']));
$s['parent_mid'] = $act->parent_id;
if (array_key_exists('published', $act->data)) {
$s['created'] = datetime_convert('UTC', 'UTC', $act->data['published']);
$s['commented'] = $s['created'];
}
elseif ($act->objprop('published')) {
$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', $act->data['updated']);
}
elseif ($act->objprop('updated')) {
$s['edited'] = datetime_convert('UTC', 'UTC', $act->obj['updated']);
}
if (array_key_exists('expires', $act->data)) {
$s['expires'] = datetime_convert('UTC', 'UTC', $act->data['expires']);
}
elseif ($act->objprop('expires')) {
$s['expires'] = datetime_convert('UTC', 'UTC', $act->obj['expires']);
}
if ($act->objprop('location')) {
$s['location'] = ((isset($act->objprop('location')['name'])) ? html2plain(purify_html($act->objprop('location')['name'])) : '');
if (isset($act->objprop('location')['latitude'], $act->objprop('location')['longitude'])) {
$s['coord'] = floatval($act->objprop('location')['latitude']) . ' ' . floatval($act->objprop('location')['longitude']);
}
}
if (in_array($act->type, ['Invite', 'Create']) && $act->objprop('type') === 'Event') {
$s['mid'] = $s['parent_mid'] = $act->id;
}
if (ActivityStreams::is_response_activity($act->type)) {
$response_activity = true;
$s['mid'] = $act->id;
$s['uuid'] = ((!empty($act->data['diaspora:guid'])) ? $act->data['diaspora:guid'] : uuid_from_url($s['mid']));
$s['parent_mid'] = $act->objprop('id') ?: $act->obj;
/*
if ($act->objprop('inReplyTo')) {
$s['parent_mid'] = $act->objprop('inReplyTo');
}
$s['thr_parent'] = $act->objprop('id') ?: $act->obj;
if (empty($s['parent_mid']) || empty($s['thr_parent'])) {
logger('response activity without parent_mid or thr_parent');
return;
}
*/
// over-ride the object timestamp with the activity
if (isset($act->data['published'])) {
$s['created'] = datetime_convert('UTC', 'UTC', $act->data['published']);
}
if (isset($act->data['updated'])) {
$s['edited'] = datetime_convert('UTC', 'UTC', $act->data['updated']);
}
$obj_actor = $act->objprop('actor') ?: $act->get_actor('attributedTo', $act->obj);
if (!isset($obj_actor['id'])) {
return false;
}
// ensure we store the original actor
self::actor_store($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, $act->obj['type']) . EOL . EOL . ($content['content'] ?? '');
}
if ($act->type === 'Dislike') {
$content['content'] = sprintf(t('Doesn\'t like %1$s\'s %2$s'), $mention, $act->obj['type']) . EOL . EOL . ($content['content'] ?? '');
}
// handle event RSVPs
if (($act->objprop('type') === 'Event') || ($act->objprop('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, $act->obj['type']);
}
// TODO: Deprecated
if ($act->type === 'emojiReaction') {
$content['content'] = (($act->tgt && $act->tgt['type'] === 'Image') ? '[img=32x32]' . $act->tgt['url'] . '[/img]' : '&#x' . $act->tgt['name'] . ';');
}
if (in_array($act->type, ['EmojiReact'])) {
// Pleroma reactions
$t = trim(self::get_textfield($act->data, 'content'));
$content['content'] = $t;
// Unicode emojis
if (grapheme_strlen($t) === 1) {
$content['content'] = '' . $t . '
';
}
$a = self::decode_taxonomy($act->data);
if ($a) {
$s['term'] = $a;
}
}
}
$s['item_thread_top'] = 0;
$s['comment_policy'] = 'authenticated';
if ($s['mid'] === $s['parent_mid']) {
$s['item_thread_top'] = 1;
// it is a parent node - decode the comment policy info if present
if ($act->objprop('commentPolicy')) {
$until = strpos($act->obj['commentPolicy'], 'until=');
if ($until !== false) {
$s['comments_closed'] = datetime_convert('UTC', 'UTC', substr($act->obj['commentPolicy'], $until + 6));
if ($s['comments_closed'] < datetime_convert()) {
$s['nocomment'] = true;
}
}
$remainder = substr($act->obj['commentPolicy'], 0, (($until) ? $until : strlen($act->obj['commentPolicy'])));
if ($remainder) {
$s['comment_policy'] = $remainder;
}
}
}
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($content, 'content'));
if ($act->objprop('quoteUrl')) {
$quote_bbcode = self::get_quote_bbcode($act->obj['quoteUrl']);
if ($s['body']) {
$s['body'] .= "\r\n\r\n";
}
$s['body'] .= $quote_bbcode;
}
$s['verb'] = self::activity_mapper($act->type);
// Mastodon does not provide update timestamps when updating poll tallies which means race conditions may occur here.
if ($act->type === 'Update' && $act->objprop('type') === 'Question' && $s['edited'] === $s['created']) {
$s['edited'] = datetime_convert();
}
if (in_array($act->type, ['Delete', 'Undo', 'Tombstone']) || ($act->type === 'Create' && (isset($act->obj['type']) && $act->obj['type'] === 'Tombstone'))) {
$s['item_deleted'] = 1;
}
if ($act->objprop('type')) {
$s['obj_type'] = self::activity_obj_mapper($act->obj['type']);
}
$s['obj'] = $act->obj;
if (array_path_exists('actor/id', $s['obj'])) {
$s['obj']['actor'] = $s['obj']['actor']['id'];
}
$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 (is_array($act->obj) && !$response_activity) {
$a = self::decode_taxonomy($act->obj);
if ($a) {
$s['term'] = $a;
}
$a = self::decode_attachment($act->obj);
if ($a) {
$s['attach'] = $a;
}
$a = self::decode_iconfig($act->data);
if ($a) {
$s['iconfig'] = $a;
}
}
// Objects that might have media attachments which aren't already provided in the content element.
// We'll check specific media objects separately.
if (in_array($act->objprop('type',''), ['Article', 'Document', 'Event', 'Note', 'Page', 'Place', 'Question']) && !empty($s['attach'])) {
$s = self::bb_attach($s);
}
if ($act->objprop('type') === 'Question' && in_array($act->type, ['Create', 'Update'])) {
if ($act->objprop('endTime')) {
$s['comments_closed'] = datetime_convert('UTC', 'UTC', $act->obj['endTime']);
}
}
if ($act->objprop('closed')) {
$s['comments_closed'] = datetime_convert('UTC', 'UTC', $act->obj['closed']);
}
if (!$response_activity) {
if ($act->objprop('type') === 'Profile') {
$s['parent_mid'] = $s['mid'];
$s['item_thread_top'] = 1;
}
// we will need a hook here to extract magnet links e.g. peertube
// right now just link to the largest mp4 we find that will fit in our
// standard content region
if ($act->objprop('type') === 'Video') {
$vtypes = [
'video/mp4',
'video/ogg',
'video/webm'
];
$mps = [];
$poster = null;
$ptr = null;
// try to find a poster to display on the video element
if ($act->objprop('icon')) {
if (is_array($act->obj['icon'])) {
if (array_key_exists(0,$act->obj['icon'])) {
$ptr = $act->obj['icon'];
}
else {
$ptr = [ $act->obj['icon'] ];
}
}
if ($ptr) {
foreach ($ptr as $foo) {
if (is_array($foo) && array_key_exists('type',$foo) && $foo['type'] === 'Image' && is_string($foo['url'])) {
$poster = $foo['url'];
}
}
}
}
$tag = (($poster) ? '[video poster="' . $poster . '"]' : '[video]' );
$ptr = null;
if ($act->objprop('url')) {
if (is_array($act->obj['url'])) {
if (array_key_exists(0,$act->obj['url'])) {
$ptr = $act->obj['url'];
}
else {
$ptr = [ $act->obj['url'] ];
}
// handle peertube's weird url link tree if we find it here
// 0 => html link, 1 => application/x-mpegURL with 'tag' set to an array of actual media links
foreach ($ptr as $idex) {
if (is_array($idex) && array_key_exists('mediaType',$idex)) {
if ($idex['mediaType'] === 'application/x-mpegURL' && isset($idex['tag']) && is_array($idex['tag'])) {
$ptr = $idex['tag'];
break;
}
}
}
foreach ($ptr as $vurl) {
if (array_key_exists('mediaType',$vurl)) {
if (in_array($vurl['mediaType'], $vtypes)) {
if (! array_key_exists('height',$vurl)) {
$vurl['height'] = 0;
}
$mps[] = $vurl;
}
}
}
}
if ($mps) {
usort($mps,[ '\Zotlabs\Lib\Activity', 'vid_sort' ]);
foreach ($mps as $m) {
if (intval($m['height']) <= 720 && self::media_not_in_body($m['href'],$s['body'])) {
$s['body'] = $tag . $m['href'] . '[/video]' . "\r\n" . $s['body'];
break;
}
}
}
elseif (is_string($act->obj['url']) && self::media_not_in_body($act->obj['url'],$s['body'])) {
$s['body'] = $tag . $act->obj['url'] . '[/video]' . "\r\n" . $s['body'];
}
}
}
if ($act->objprop('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'] = '[audio]' . $vurl['href'] . '[/audio]' . "\r\n" . $s['body'];
break;
}
}
}
elseif (is_string($act->obj['url']) && self::media_not_in_body($act->obj['url'], $s['body'])) {
$s['body'] = '[audio]' . $act->obj['url'] . '[/audio]' . "\r\n" . $s['body'];
}
}
}
if ($act->objprop('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]' . "\r\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]' . "\r\n" . $s['body'];
}
}
}
}
if ($act->objprop('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'] .= "\r\n" . $li['body'];
}
else {
$s['body'] .= "\r\n" . $purl;
}
}
}
}
}
if (in_array($act->objprop('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'] = $act->obj['url'];
}
}
}
if (!(isset($s['plink']) && $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) || in_array('Public', $act->recips) || in_array('as:Public', $act->recips))) {
$s['item_private'] = 0;
}
if ($act->objprop('directMessage')) {
$s['item_private'] = 2;
}
$ap_rawmsg = '';
$diaspora_rawmsg = '';
$raw_arr = [];
$raw_arr = json_decode($act->raw, true);
// This is a zot6 packet and the raw activitypub or diaspora message json
// is possibly available in the attachement.
if (array_key_exists('signed', $raw_arr) && isset($act->data['attachment']) && is_array($act->data['attachment'])) {
foreach($act->data['attachment'] as $a) {
if (
isset($a['type']) && $a['type'] === 'PropertyValue' &&
isset($a['name']) && $a['name'] === 'zot.activitypub.rawmsg' &&
isset($a['value'])
) {
$ap_rawmsg = $a['value'];
}
if (
isset($a['type']) && $a['type'] === 'PropertyValue' &&
isset($a['name']) && $a['name'] === 'zot.diaspora.fields' &&
isset($a['value'])
) {
$diaspora_rawmsg = $a['value'];
}
}
}
if (!$ap_rawmsg && array_key_exists('signed', $raw_arr)) {
// zap
$ap_rawmsg = json_encode($act->data, JSON_UNESCAPED_SLASHES);
}
if ($ap_rawmsg) {
IConfig::Set($s, 'activitypub', 'rawmsg', $ap_rawmsg, 1);
}
elseif (!array_key_exists('signed', $raw_arr)) {
IConfig::Set($s, 'activitypub', 'rawmsg', $act->raw, 1);
}
if ($diaspora_rawmsg) {
IConfig::Set($s, 'diaspora', 'fields', $diaspora_rawmsg, 1);
}
if ($act->raw_recips) {
IConfig::Set($s, 'activitypub', 'recips', $act->raw_recips);
}
if ($act->objprop('type') === 'Event' && $act->objprop('timezone')) {
IConfig::Set($s, 'event', 'timezone', $act->objprop('timezone'), true);
}
$hookinfo = [
'act' => $act,
's' => $s
];
call_hooks('decode_note', $hookinfo);
return $hookinfo['s'];
}
static function store($channel, $observer_hash, $act, $item, $fetch_parents = true, $force = false) {
$is_sys_channel = is_sys_channel($channel['channel_id']);
$is_child_node = false;
$parent = null;
// TODO: not implemented
// Pleroma scrobbles can be really noisy and contain lots of duplicate activities. Disable them by default.
/*if (($act->type === 'Listen') && ($is_sys_channel || get_pconfig($channel['channel_id'], 'system', 'allow_scrobbles', false))) {
return;
}*/
if ($item['parent_mid'] && $item['parent_mid'] !== $item['mid']) {
$is_child_node = true;
}
if (empty($item['item_fetched'])) {
$item['owner_xchan'] = $observer_hash;
}
// An ugly and imperfect way to recognise a mastodon or friendica direct message
if (
$item['item_private'] === 1 &&
!isset($act->raw_recips['cc']) &&
is_array($act->raw_recips['to']) &&
in_array(channel_url($channel), $act->raw_recips['to']) &&
!in_array($act->actor['followers'], $act->raw_recips['to'])
) {
$item['item_private'] = 2;
}
$allowed = false;
$permit_mentions = intval(PConfig::Get($channel['channel_id'], 'system','permit_all_mentions') && i_am_mentioned($channel, $item));
if ($is_child_node) {
$parent = q("select * from item where mid = '%s' and uid = %d",
dbesc($item['parent_mid']),
intval($channel['channel_id'])
);
if (!$parent) {
if (perm_is_allowed($channel['channel_id'], $observer_hash, 'send_stream') || $is_sys_channel) {
if ($item['verb'] === 'Announce') {
$force = true;
}
if ($fetch_parents) {
App::$cache['as_fetch_objects'][$item['mid']]['channels'][] = $channel['channel_id'];
App::$cache['as_fetch_objects'][$item['mid']]['force'] = intval($force);
return;
}
}
logger('no parent');
return;
}
if ($parent[0]['obj_type'] === 'Question') {
if (in_array($item['obj_type'], ['Note', ACTIVITY_OBJ_COMMENT]) && $item['title'] && (!$item['body'])) {
$item['obj_type'] = 'Answer';
}
}
if ($parent[0]['item_wall']) {
// set the owner to the owner of the parent
$item['owner_xchan'] = $parent[0]['owner_xchan'];
// quietly reject group comment boosts by group owner
// (usually only sent via ActivityPub so groups will work on microblog platforms)
// This catches those activities if they slipped in via a conversation fetch
if ($parent[0]['parent_mid'] !== $item['parent_mid']) {
if ($item['verb'] === 'Announce' && $item['author_xchan'] === $item['owner_xchan']) {
logger('group boost activity by group owner rejected');
return;
}
}
// check permissions against the author, not the sender
$allowed = perm_is_allowed($channel['channel_id'], $item['author_xchan'], 'post_comments');
if ((!$allowed) && $permit_mentions) {
if ($parent[0]['owner_xchan'] === $channel['channel_hash']) {
$allowed = false;
}
else {
$allowed = true;
}
}
// TODO: not implemented
/*if (absolutely_no_comments($parent[0])) {
$allowed = false;
}*/
if (!$allowed) {
if (PConfig::Get($channel['channel_id'], 'system', 'moderate_unsolicited_comments') && $item['obj_type'] !== 'Answer') {
$item['item_blocked'] = ITEM_MODERATED;
$allowed = true;
}
else {
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 && empty($item['item_fetched'])) {
$allowed = false;
}
}
}
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'], ((empty($item['item_fetched'])) ? $observer_hash : $item['author_xchan']), 'send_stream') || $is_sys_channel) {
$allowed = true;
}
if ($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
IConfig::Set($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')) {
$allowed = true;
}
}
if ($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']);
$item['source_xchan'] = ((!empty($item['source_xchan'])) ? self::find_best_identity($item['source_xchan']) : '');
if (!$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']) {
$incl = Config::Get('system','pubstream_incl');
$excl = Config::Get('system','pubstream_excl');
if(($incl || $excl) && !MessageFilter::evaluate($item, $incl, $excl)) {
logger('post is filtered');
return;
}
}
$abook = q("select * from abook where ( abook_xchan = '%s' OR abook_xchan = '%s' OR abook_xchan = '%s') and abook_channel = %d ",
dbesc($item['author_xchan']),
dbesc($item['owner_xchan']),
dbesc($item['source_xchan']),
intval($channel['channel_id'])
);
if ($abook) {
if (!post_is_importable($channel['channel_id'], $item, $abook)) {
logger('post is filtered');
return;
}
}
if (array_key_exists('conversation', $act->obj)) {
IConfig::Set($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'])) ? $act->data['commentPolicy'] : 'authenticated');
IConfig::Set($item, 'activitypub', 'recips', $act->raw_recips);
if (intval($act->sigok)) {
$item['item_verified'] = 1;
}
if ($is_child_node) {
$item['owner_xchan'] = $parent[0]['owner_xchan'];
if ($parent[0]['parent_mid'] !== $item['parent_mid']) {
$item['thr_parent'] = $item['parent_mid'];
}
else {
$item['thr_parent'] = $parent[0]['parent_mid'];
}
$item['parent_mid'] = $parent[0]['parent_mid'];
/*
*
* Check for conversation privacy mismatches
* We can only do this if we have a channel and we have fetched the parent
*
*/
// public conversation, but this comment went rogue and was published privately
// hide it from everybody except the channel owner
if (intval($parent[0]['item_private']) === 0) {
if (intval($item['item_private'])) {
$item['item_restrict'] = $item['item_restrict'] | 1;
$item['allow_cid'] = '<' . $channel['channel_hash'] . '>';
$item['allow_gid'] = $item['deny_cid'] = $item['deny_gid'] = '';
}
}
// private conversation, but this comment went rogue and was published publicly
// hide it from everybody except the channel owner
if (intval($parent[0]['item_private'])) {
if (!intval($item['item_private'])) {
$item['item_private'] = intval($parent[0]['item_private']);
$item['allow_cid'] = '<' . $channel['channel_hash'] . '>';
$item['allow_gid'] = $item['deny_cid'] = $item['deny_gid'] = '';
}
}
}
if (isset($item['term']) && !PConfig::Get($channel['channel_id'], 'system', 'no_smilies')) {
foreach ($item['term'] as $t) {
if ($t['ttype'] === TERM_EMOJI) {
$class = 'emoji';
$shortname = ':' . trim($t['term'], ':') . ':';
if (is_solo_string($shortname, $item['body'])) {
$class .= ' single-emoji';
}
$item['body'] = str_replace($shortname, '[img class="' . $class . '" alt="' . $t['term'] . '" title="' . $t['term'] . '"]' . ($t['imgurl'] ?: $t['url']) . '[/img]', $item['body']);
}
}
}
// TODO: not implemented
// self::rewrite_mentions($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
$connected = q("SELECT abook.*, xchan.* FROM abook left join xchan on abook_xchan = xchan_hash
WHERE abook_channel = %d and abook_xchan = '%s' LIMIT 1",
intval($channel['channel_id']),
dbesc($parent[0]['owner_xchan'])
);
if (!$connected) {
// 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'], $observer_hash]);
}
}
}
if ($x['success']) {
if (check_item_source($channel['channel_id'], $x['item']) && in_array($x['item']['obj_type'], ['Event', ACTIVITY_OBJ_EVENT])) {
event_addtocal($x['item_id'], $channel['channel_id']);
}
if ($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']);
}
}
/**
* @brief fetch a thread upwards by either providing a message id or an item/activity pair
*
* @param array $channel
* @param array $observer_hash
* @param array $item string|array
* @param object $act activitystreams object (optional) default null
* @param bool $force disregard permissions and force storage (optional) default false
* @return bool
*/
static public function fetch_and_store_parents($channel, $observer_hash, $item, $act = null, $force = false) {
logger('fetching parents');
if (!$item) {
return false;
}
$p = [];
$announce_init = false;
$group_announce_init = false;
if (is_object($act) && is_array($item)) {
$p[] = [$act, $item];
$announce_init = ($item['verb'] === 'Announce');
$group_announce_init = ($announce_init && $act->actor['type'] === 'Group');
}
if (is_string($item)) {
$mid = $item;
$item = [
'parent_mid' => $mid,
'mid' => ''
];
}
$current_item = $item;
$i = 0;
while ($current_item['parent_mid'] !== $current_item['mid']) {
$cached = ASCache::Get($current_item['parent_mid']);
if ($cached) {
// logger('cached: ' . $current_item['parent_mid']);
$n = unserialise($cached);
}
else {
// logger('fetching: ' . $current_item['parent_mid']);
$n = self::fetch($current_item['parent_mid'], $channel);
if (!$n) {
break;
}
ASCache::Set($current_item['parent_mid'], serialise($n));
}
$a = new ActivityStreams($n);
logger($a->debug(), LOGGER_DATA);
if (!$a->is_valid()) {
logger('not a valid activity');
break;
}
if (in_array($a->type, ['Add', 'Remove'])
&& is_array($a->obj)
&& array_key_exists('object', $a->obj)
&& array_key_exists('actor', $a->obj)
&& !empty($a->tgt)) {
logger('unsupported collection operation', LOGGER_DEBUG);
return;
}
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);
}
$item = Activity::decode_note($a);
if (!$item) {
break;
}
$hookinfo = [
'a' => $a,
'item' => $item
];
call_hooks('fetch_and_store', $hookinfo);
$item = $hookinfo['item'];
if ($item) {
$item['item_fetched'] = true;
if ($announce_init) {
// Store the sender of the initial announce
$item['source_xchan'] = $observer_hash;
// WARNING: the presence of both source_xchan and non-zero item_uplink here will cause a delivery loop
$item['item_uplink'] = 0;
if ($item['item_thread_top']) {
$item['verb'] = 'Announce';
}
if (!$group_announce_init) {
// Force a new thread if the announce init actor is not a group
$item['verb'] = 'Announce';
$item['parent_mid'] = $item['thr_parent'] = $item['mid'];
$item['item_thread_top'] = 1;
}
}
else {
$announce_init = ($i === 0 && $item['verb'] === 'Announce');
$group_announce_init = ($announce_init && $a->actor['type'] === 'Group');
}
if (intval($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;
$i++;
}
if ($p) {
foreach ($p as $pv) {
if ($pv[0]->is_valid()) {
Activity::store($channel, $observer_hash, $pv[0], $pv[1], false, $force);
}
}
return true;
}
return false;
}
public static function bb_attach($item) {
$ret = false;
if (!(is_array($item['attach']) && $item['attach'])) {
return $item;
}
foreach ($item['attach'] as $a) {
if (array_key_exists('type', $a) && stripos($a['type'], 'image') !== false) {
// don't add inline image if it's an svg and we already have an inline svg
if ($a['type'] === 'image/svg+xml' && strpos($item['body'], '[/svg]')) {
continue;
}
// Friendica attachment weirdness
// Check both the attachment image and href since they can be different and the one in the href is a different link with different resolution.
// Otheriwse you'll get duplicated images
if (isset($a['image'])) {
if (self::media_not_in_body($a['image'], $item['body']) && self::media_not_in_body($a['href'], $item['body'])) {
if (isset($a['name']) && $a['name']) {
$alt = htmlspecialchars($a['name'], ENT_QUOTES);
$item['body'] = '[img=' . $a['href'] . ']' . $alt . '[/img]' . "\r\n" . $item['body'];
} else {
$item['body'] = '[img]' . $a['href'] . '[/img]' . "\r\n" . $item['body'];
}
}
continue;
}
elseif (self::media_not_in_body($a['href'], $item['body'])) {
if (isset($a['name']) && $a['name']) {
$alt = htmlspecialchars($a['name'], ENT_QUOTES);
$item['body'] = '[img=' . $a['href'] . ']' . $alt . '[/img]' . "\r\n" . $item['body'];
} else {
$item['body'] = '[img]' . $a['href'] . '[/img]' . "\r\n" . $item['body'];
}
}
}
if (array_key_exists('type', $a) && stripos($a['type'], 'video') !== false) {
if (self::media_not_in_body($a['href'], $item['body'])) {
$item['body'] = '[video]' . $a['href'] . '[/video]' . "\r\n" . $item['body'];
}
}
if (array_key_exists('type', $a) && stripos($a['type'], 'audio') !== false) {
if (self::media_not_in_body($a['href'], $item['body'])) {
$item['body'] = '[audio]' . $a['href'] . '[/audio]' . "\r\n" . $item['body'];
}
}
//if (array_key_exists('type', $a) && stripos($a['type'], 'activity') !== false) {
//if (self::media_not_in_body($a['href'], $item['body'])) {
//$item = self::get_quote($a['href'], $item);
//}
//}
}
return $item;
}
// check for the existence of existing media link in body
public static function media_not_in_body($s, $body) {
if (empty($body)) {
return true;
}
$s_alt = htmlspecialchars($s, ENT_QUOTES, 'UTF-8');
if (
(strpos($body, ']' . $s . '[/img]') === false) &&
(strpos($body, '[img=' . $s . ']') === false) &&
(strpos($body, ']' . $s . '[/zmg]') === false) &&
(strpos($body, '[zmg=' . $s . ']') === false) &&
(strpos($body, ']' . $s . '[/video]') === false) &&
(strpos($body, ']' . $s . '[/zvideo]') === false) &&
(strpos($body, ']' . $s . '[/audio]') === false) &&
(strpos($body, ']' . $s . '[/zaudio]') === false) &&
(strpos($body, ']' . $s_alt . '[/img]') === false) &&
(strpos($body, '[img=' . $s_alt . ']') === false) &&
(strpos($body, ']' . $s_alt . '[/zmg]') === false) &&
(strpos($body, '[zmg=' . $s_alt . ']') === false) &&
(strpos($body, ']' . $s_alt . '[/video]') === false) &&
(strpos($body, ']' . $s_alt . '[/zvideo]') === false) &&
(strpos($body, ']' . $s_alt . '[/audio]') === false) &&
(strpos($body, ']' . $s_alt . '[/zaudio]') === false)
) {
return true;
}
return false;
}
static function bb_content($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 $content;
}
if (isset($act['type']) && $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', $act)) {
if (in_array($act['source']['mediaType'], ['text/bbcode'])) {
$content['bbcode'] = purify_html($act['source']['content']);
}
}
return $content;
}
static function get_textfield($act, $field): null|string|array {
$content = null;
if (array_key_exists($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) {
// remove any fragments like #main-key since these won't be present in our cached data
$cache_url = ((strpos($id, '#')) ? substr($id, 0, strpos($id, '#')) : $id);
$actor = XConfig::Get($cache_url, 'system', 'actor_record');
if ($actor && isset($actor['actor_cache_date']) && $actor['actor_cache_date'] > datetime_convert('UTC', 'UTC', ' now - 3 days')) {
unset($actor['actor_cache_date']);
return $actor;
}
// try other get_cached_actor providers (e.g. diaspora)
$hookdata = [
'id' => $id,
'actor' => null
];
call_hooks('get_cached_actor_provider', $hookdata);
return $hookdata['actor'];
}
static function get_actor($actor_id, $force = false) {
// remove fragment
$actor_id = ((strpos($actor_id, '#')) ? substr($actor_id, 0, strpos($actor_id, '#')) : $actor_id);
$actor = ((!$force) ? self::get_cached_actor($actor_id) : null);
if ($actor) {
return $actor;
}
$actor = self::fetch($actor_id);
if ($actor) {
return $actor;
}
return null;
}
static function get_unknown_actor($act) {
// try other get_actor providers (e.g. diaspora)
$hookdata = [
'activity' => $act,
'actor' => null
];
call_hooks('get_actor_provider', $hookdata);
return $hookdata['actor'];
}
static function get_actor_hublocs($url, $options = 'all') {
$url = ((strpos($url, '#')) ? substr($url, 0, strpos($url, '#')) : $url);
switch ($options) {
case 'activitypub':
$hublocs = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_hash = '%s' and hubloc_deleted = 0 order by hubloc_id desc",
dbesc($url)
);
break;
case 'zot6':
$hublocs = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_id_url = '%s' and hubloc_deleted = 0 order by hubloc_id desc",
dbesc($url)
);
break;
case 'all':
default:
$hublocs = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where ( hubloc_id_url = '%s' OR hubloc_hash = '%s' ) and hubloc_deleted = 0 order by hubloc_id desc",
dbesc($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 (!empty($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 $ret;
}
foreach ($actor['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 $ret;
}
static function get_quote_bbcode($url) {
$ret = '';
$a = self::fetch($url);
if ($a) {
$act = new ActivityStreams($a);
if ($act->is_valid()) {
$content = self::get_content($act->obj);
$ret .= "[share author='" . urlencode($act->actor['name'] ?? $act->actor['preferredUsername']) .
"' profile='" . $act->actor['id'] .
"' avatar='" . ($act->actor['icon']['url'] ?? z_root() . '/' . get_default_profile_photo(80)) .
"' link='" . $act->obj['id'] .
"' auth='" . ((is_matrix_url($act->actor['id'])) ? 'true' : 'false') .
"' posted='" . $act->obj['published'] .
"' message_id='" . $act->obj['id'] .
"']";
$ret .= self::bb_content($content, 'content');
$ret .= '[/share]';
}
}
return $ret;
}
static function get_attributed_to_actor_url($act) {
$url = '';
if (!isset($act->obj['attributedTo'])) {
return $url;
}
if (is_string($act->obj['attributedTo'])) {
$url = $act->obj['attributedTo'];
}
if (is_array($act->obj['attributedTo'])) {
foreach($act->obj['attributedTo'] as $a) {
if (is_array($a) && isset($a['type']) && $a['type'] === 'Person') {
if (isset($a['id'])) {
$url = $a['id'];
break;
}
}
elseif (is_string($a)) {
$url = $a;
break;
}
}
}
return $url;
}
public static function ap_context($contextType = null): array {
return ['@context' => [
ACTIVITYSTREAMS_JSONLD_REV,
'https://w3id.org/security/v1',
// 'https://www.w3.org/ns/did/v1',
// 'https://w3id.org/security/multikey/v1',
// 'https://w3id.org/security/data-integrity/v1',
'https://purl.archive.org/socialweb/webfinger',
self::ap_schema($contextType)
]];
}
public static function ap_schema($contextType = null): array {
// $contextType is reserved for future use so that the caller can specify
// a limited subset of the entire schema definition for particular activities.
return [
'zot' => z_root() . '/apschema#',
'schema' => 'http://schema.org#',
'ostatus' => 'http://ostatus.org#',
'diaspora' => 'https://diasporafoundation.org/ns/',
'litepub' => 'http://litepub.social/ns#',
'toot' => 'http://joinmastodon.org/ns#',
'commentPolicy' => 'zot:commentPolicy',
'Bookmark' => 'zot:Bookmark',
'Category' => 'zot:Category',
'Emoji' => 'toot:Emoji',
'directMessage' => 'litepub:directMessage',
'PropertyValue' => 'schema:PropertyValue',
'value' => 'schema:value',
'uuid' => 'schema:identifier',
'conversation' => 'ostatus:conversation',
'guid' => 'diaspora:guid',
'manuallyApprovesFollowers' => 'as:manuallyApprovesFollowers',
'Hashtag' => 'as:Hashtag'
];
}
/**
* @brief Builds the activity packet and signs it if $channel is provided.
*
* @param array $obj
* @param array $channel (optional) default []
* @param bool $json_encode (optional) default true
* @return string|array
*/
public static function build_packet(array $obj, array $channel = [], bool $json_encode = true): string|array {
$arr = array_merge(Activity::ap_context(), $obj);
if ($channel) {
$proof = (new JcsEddsa2022)->sign($arr, $channel);
$arr['proof'] = $proof;
$signature = LDSignatures::sign($arr, $channel);
$arr['signature'] = $signature;
}
if ($json_encode) {
return json_encode($arr, JSON_UNESCAPED_SLASHES);
}
return $arr;
}
/**
* @brief Prepares the arguments and inititates the Fetchparents or Zotconvo daemon.
* @param string $observer
*
*/
public static function init_background_fetch(string $observer_hash = '') {
if (isset(App::$cache['zot_fetch_objects'])) {
$channels_str = '';
foreach (App::$cache['zot_fetch_objects'] as $mid => $info) {
$force = $info['force'];
foreach ($info['channels'] as $c) {
if ($channels_str) {
$channels_str .= ',';
}
$channels_str .= $c;
}
Master::Summon(['Zotconvo', $channels_str, $mid, $force]);
}
}
if (isset(App::$cache['as_fetch_objects'])) {
if (!$observer_hash) {
logger('Attempt to initiate Fetchparents daemon without observer');
return;
}
$channels_str = '';
foreach (App::$cache['as_fetch_objects'] as $mid => $info) {
$force = $info['force'];
foreach ($info['channels'] as $c) {
if ($channels_str) {
$channels_str .= ',';
}
$channels_str .= $c;
}
Master::Summon(['Fetchparents', $channels_str, $observer_hash, $mid, $force]);
}
}
}
}