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Code Issues Projects Releases Packages Wiki Activity Actions
streams/Zotlabs/Lib/Activity.php
zotlabs ecfcb61b09 empty channel
2019-11-26 21:29:48 -08:00

2612 lines
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<?php
namespace Zotlabs\Lib;
use Zotlabs\Web\HTTPSig;
use Zotlabs\Access\Permissions;
use Zotlabs\Access\PermissionRoles;
use Zotlabs\Access\PermissionLimits;
use Zotlabs\Daemon\Master;
require_once('include/html2bbcode.php');
require_once('include/html2plain.php');
require_once('include/event.php');
class Activity {
static $ACTOR_CACHE_DAYS = 3;
static function encode_object($x) {
if (($x) && (! is_array($x)) && (substr(trim($x),0,1)) === '{' ) {
$x = json_decode($x,true);
}
if ($x['type'] === ACTIVITY_OBJ_PERSON) {
return self::fetch_person($x);
}
if ($x['type'] === ACTIVITY_OBJ_PROFILE) {
return self::fetch_profile($x);
}
if (in_array($x['type'], [ ACTIVITY_OBJ_NOTE, ACTIVITY_OBJ_ARTICLE ] )) {
// Use Mastodon-specific note and media hacks if nomadic. Else HTML.
// Eventually this needs to be passed in much further up the stack
// and base the decision on whether or not we are encoding for ActivityPub or Zot6
return self::fetch_item($x,((get_config('system','activitypub',true)) ? true : false));
}
if ($x['type'] === ACTIVITY_OBJ_THING) {
return self::fetch_thing($x);
}
call_hooks('encode_object',$x);
return $x;
}
static function fetch($url,$channel = null,$hub = null) {
$redirects = 0;
if (! check_siteallowed($url)) {
logger('blacklisted: ' . $url);
return null;
}
if (! $channel) {
$channel = get_sys_channel();
}
logger('fetch: ' . $url, LOGGER_DEBUG);
if (strpos($url,'x-zot:') === 0) {
$x = ZotURL::fetch($url,$channel,$hub);
}
else {
$m = parse_url($url);
// handle bearcaps
if ($m['scheme'] === 'bear' && $m['query']) {
$params = explode('&',$m['query']);
if ($params) {
foreach ($params as $p) {
if (substr($p,0,2) === 'u=') {
$url = substr($p,2);
}
if (substr($p,0,2) === 't=') {
$token = substr($p,2);
}
}
// re-parse the URL because it changed and we need the host in the next section
$m = parse_url($url);
}
}
$headers = [
'Accept' => 'application/activity+json, application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
'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']) {
$y = json_decode($x['body'],true);
logger('returned: ' . json_encode($y,JSON_PRETTY_PRINT|JSON_UNESCAPED_SLASHES));
return json_decode($x['body'], true);
}
else {
logger('fetch failed: ' . $url);
}
return null;
}
static function fetch_person($x) {
return self::fetch_profile($x);
}
static function fetch_profile($x) {
$r = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_id_url = '%s' limit 1",
dbesc($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],false);
}
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,$activitypub = false) {
if (array_key_exists('source',$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,true);
return self::encode_item($r[0],$activitypub);
}
}
static function encode_item_collection($items,$id,$type,$activitypub = false) {
$ret = [
'id' => z_root() . '/' . $id,
'type' => $type,
'totalItems' => count($items),
];
if ($items) {
$x = [];
foreach ($items as $i) {
$m = get_iconfig($i['id'],'activitypub','rawmsg');
if ($m) {
$t = json_decode($m,true);
}
else {
$t = self::encode_activity($i,$activitypub);
}
if ($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 $ret;
}
static function decode_taxonomy($item) {
$ret = [];
if ($item['tag'] && 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))
$t['type'] = 'Hashtag';
switch($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 'topicalCollection':
$ret[] = [ 'ttype' => TERM_PCATEGORY, 'url' => $t['href'], 'term' => escape_tags($t['name']) ];
break;
case 'Mention':
$mention_type = substr($t['name'],0,1);
if ($mention_type === '!') {
$ret[] = [ 'ttype' => TERM_FORUM, 'url' => $t['href'], 'term' => escape_tags(substr($t['name'],1)) ];
}
else {
$ret[] = [ 'ttype' => TERM_MENTION, 'url' => $t['href'], 'term' => escape_tags((substr($t['name'],0,1) === '@') ? substr($t['name'],1) : $t['name']) ];
}
break;
case 'Emoji':
$ret[] = [ 'ttype' => TERM_EMOJI, 'url' => $t['icon']['url'], 'term' => escape_tags($t['name']) ];
break;
default:
break;
}
}
}
return $ret;
}
static function encode_taxonomy($item) {
$ret = [];
if ($item['term']) {
foreach ($item['term'] as $t) {
switch($t['ttype']) {
case TERM_HASHTAG:
// An id is required so if we don't have a url in the taxonomy, ignore it and keep going.
if ($t['url']) {
$ret[] = [ 'id' => $t['url'], 'name' => '#' . $t['term'] ];
}
break;
case TERM_PCATEGORY:
if ($t['url'] && $t['term']) {
$ret[] = [ 'type' => 'topicalCollection', 'href' => $t['url'], 'name' => $t['term'] ];
}
break;
case TERM_FORUM:
$term = self::lookup_term_addr($t['url'],$t['term']);
$ret[] = [ 'type' => 'Mention', 'href' => $t['url'], 'name' => '!' . (($term) ? $term : $t['term']) ];
break;
case TERM_MENTION:
$term = self::lookup_term_addr($t['url'],$t['term']);
$ret[] = [ 'type' => 'Mention', 'href' => $t['url'], 'name' => '@' . (($term) ? $term : $t['term']) ];
break;
default:
break;
}
}
}
return $ret;
}
static function lookup_term_addr($url,$name) {
// The visible mention in our activities is always the full name.
// In the object taxonomy change this to the webfinger handle in case
// platforms expect the Mastodon form in order to generate notifications
// Try a couple of different things in case the url provided isn't the canonical id.
// If all else fails, try to match the name.
$r = false;
if ($url) {
$r = q("select xchan_addr from xchan where ( xchan_url = '%s' OR xchan_hash = '%s' ) limit 1",
dbesc($url),
dbesc($url)
);
if ($r) {
return $r[0]['xchan_addr'];
}
}
if ($name) {
$r = q("select xchan_addr from xchan where xchan_name = '%s' limit 1",
dbesc($name)
);
if ($r) {
return $r[0]['xchan_addr'];
}
}
return EMPTY_STR;
}
static function lookup_term_url($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
$r = q("select hubloc_id_url from hubloc left join xchan on hubloc_hash = xchan_hash where xchan_url = '%s' and hubloc_primary = 1 limit 1",
dbesc($url)
);
if ($r) {
return $r[0]['hubloc_id_url'];
}
return EMPTY_STR;
}
static function encode_attachment($item) {
$ret = [];
if ($item['attach']) {
$atts = ((is_array($item['attach'])) ? $item['attach'] : json_decode($item['attach'],true));
if ($atts) {
foreach ($atts as $att) {
if (strpos($att['type'],'image')) {
$ret[] = [ 'type' => 'Image', 'url' => $att['href'] ];
}
else {
$ret[] = [ 'type' => 'Link', 'mediaType' => $att['type'], 'href' => $att['href'] ];
}
}
}
}
return $ret;
}
static function decode_attachment($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['href'])
$entry['href'] = $att['href'];
elseif ($att['url'])
$entry['href'] = $att['url'];
if ($att['mediaType'])
$entry['type'] = $att['mediaType'];
elseif ($att['type'] === 'Image')
$entry['type'] = 'image/jpeg';
if ($entry)
$ret[] = $entry;
}
}
elseif (is_string($item['attachment'])) {
btlogger('not an array: ' . $item['attachment']);
}
return $ret;
}
static function encode_activity($i,$activitypub = false) {
$ret = [];
$reply = false;
if (intval($i['item_deleted'])) {
$ret['type'] = 'Delete';
$ret['id'] = str_replace('/item/','/activity/',$i['mid']) . '#delete';
$actor = self::encode_person($i['author'],false);
if ($actor)
$ret['actor'] = $actor;
else
return [];
if ($i['obj']) {
if (! is_array($i['obj'])) {
$i['obj'] = json_decode($i['obj'],true);
}
$obj = self::encode_object($i['obj']);
if ($obj)
$ret['object'] = $obj;
else
return [];
}
else {
$obj = self::encode_item($i,$activitypub);
if ($obj)
$ret['object'] = $obj;
else
return [];
}
$ret['to'] = [ ACTIVITY_PUBLIC_INBOX ];
return $ret;
}
$ret['type'] = self::activity_mapper($i['verb']);
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'] = $i['mid'];
}
if ($i['title']) {
$ret['name'] = $i['title'];
}
if ($i['summary']) {
$ret['summary'] = bbcode($i['summary'], [ 'export' => true ]);
}
if ($ret['type'] === 'Announce') {
$tmp = $i['body'];
$ret['content'] = bbcode($tmp, [ 'export' => 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['mid'] !== $i['parent_mid']) {
$reply = true;
// inReplyTo needs to be set in the activity for followup actiions (Like, Dislike, Attend, Announce, etc.),
// but *not* for comments, where it should only be present in the object
if (! in_array($ret['type'],[ 'Create','Update' ])) {
$ret['inReplyTo'] = $i['thr_parent'];
$cnv = get_iconfig($i['parent'],'ostatus','conversation');
if (! $cnv) {
$cnv = $ret['parent_mid'];
}
}
}
if (! $cnv) {
$cnv = get_iconfig($i,'ostatus','conversation');
}
if ($cnv) {
$ret['conversation'] = $cnv;
}
// $ret['inheritPrivacy'] = true;
$actor = self::encode_person($i['author'],false);
if ($actor)
$ret['actor'] = $actor;
else
return [];
if ($i['obj']) {
if (! is_array($i['obj'])) {
$i['obj'] = json_decode($i['obj'],true);
}
$obj = self::encode_object($i['obj']);
if ($obj)
$ret['object'] = $obj;
else
return [];
}
else {
$obj = self::encode_item($i,$activitypub);
if ($obj)
$ret['object'] = $obj;
else
return [];
}
if ($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;
}
}
$t = self::encode_taxonomy($i);
if ($t) {
$ret['tag'] = $t;
}
// addressing madness
if ($activitypub) {
$public = (($i['item_private']) ? false : true);
$top_level = (($reply) ? false : true);
if ($public) {
if ($top_level) {
$ret['to'] = [ ACTIVITY_PUBLIC_INBOX ];
$ret['cc'] = [ z_root() . '/followers/' . substr($i['author']['xchan_addr'],0,strpos($i['author']['xchan_addr'],'@')) ];
}
else {
$ret['to'] = [ z_root() . '/followers/' . substr($i['author']['xchan_addr'],0,strpos($i['author']['xchan_addr'],'@')) ];
$ret['cc'] = [ ACTIVITY_PUBLIC_INBOX ];
}
}
else {
// private activity
if ($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) && $mention['href'] && ! in_array($mention['href'],$ret['to'])) {
$ret['to'][] = $mention['href'];
}
}
}
$d = q("select hubloc_id_url from hubloc left join item on hubloc_hash = owner_xchan where id = %d limit 1",
intval($i['parent'])
);
if ($d) {
if (! in_array($d[0]['hubloc_id_url'],$ret['to'])) {
$ret['cc'] = [ $d[0]['hubloc_id_url'] ];
}
}
}
}
$mentions = self::map_mentions($i);
if (count($mentions) > 0) {
if (! $ret['to']) {
$ret['to'] = $mentions;
}
else {
$ret['to'] = array_values(array_unique(array_merge($ret['to'], $mentions)));
}
}
}
return $ret;
}
static function encode_item($i, $activitypub = false) {
$ret = [];
$reply = false;
$is_directmessage = false;
$bbopts = (($activitypub) ? 'activitypub' : 'export');
$objtype = self::activity_obj_mapper($i['obj_type']);
if (intval($i['item_deleted'])) {
$ret['type'] = 'Tombstone';
$ret['formerType'] = $objtype;
$ret['id'] = $i['mid'];
$ret['to'] = [ ACTIVITY_PUBLIC_INBOX ];
return $ret;
}
$ret['type'] = $objtype;
/**
* If the destination is activitypub, see if the content needs conversion to
* Mastodon "quirks" mode. This will be the case if there is any markup beyond
* links or images OR if the number of images exceeds 1. This content may be
* purified into oblivion when using the Note type so turn it into an Article.
*/
$convert_to_article = false;
$images = false;
if ($ret['type'] === 'Note') {
$bbtags = false;
$num_bbtags = preg_match_all('/\[\/([a-z]+)\]/ism',$i['body'],$bbtags,PREG_SET_ORDER);
if ($num_bbtags) {
foreach ($bbtags as $t) {
if((! $t[1]) || (in_array($t[1],['url','zrl','img','zmg','share','app']))) {
continue;
}
$convert_to_article = true;
}
}
$has_images = preg_match_all('/\[[zi]mg(.*?)\](.*?)\[/ism',$i['body'],$images,PREG_SET_ORDER);
if ($activitypub) {
if ($has_images > 1) {
$convert_to_article = true;
}
if ($convert_to_article) {
$ret['type'] = 'Article';
}
}
}
$ret['id'] = $i['mid'];
$ret['published'] = datetime_convert('UTC','UTC',$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];
}
}
// $ret['inheritPrivacy'] = true;
if (intval($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['mid'] !== $i['parent_mid']) {
$ret['inReplyTo'] = $i['thr_parent'];
$cnv = get_iconfig($i['parent'],'ostatus','conversation');
if (! $cnv) {
$cnv = $ret['parent_mid'];
}
$reply = true;
if ($i['item_private']) {
$d = q("select xchan_url, xchan_addr, xchan_name from item left join xchan on xchan_hash = author_xchan where id = %d limit 1",
intval($i['parent'])
);
if ($d) {
$recips = get_iconfig($i['parent'], 'activitypub', 'recips');
if (is_array($recips) && in_array($i['author']['xchan_url'], $recips['to'])) {
$reply_url = $d[0]['xchan_url'];
$is_directmessage = true;
}
else {
$reply_url = z_root() . '/followers/' . substr($i['author']['xchan_addr'],0,strpos($i['author']['xchan_addr'],'@'));
}
$reply_addr = (($d[0]['xchan_addr']) ? $d[0]['xchan_addr'] : $d[0]['xchan_name']);
}
}
}
if (! $cnv) {
$cnv = get_iconfig($i,'ostatus','conversation');
}
if ($cnv) {
$ret['conversation'] = $cnv;
}
// 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.
$token = get_iconfig($i,'ocap','relay');
if ($token && $has_images) {
for ($n = 0; $n < count($images); $n ++) {
$match = $images[$n];
if (strpos($match[2],z_root() . '/photo/') !== false) {
$i['body'] = str_replace($match[2],$match[2] . '?token=' . $token, $i['body']);
$images[$n][2] = $match[2] . '?token=' . $token;
}
}
}
if ($i['mimetype'] === 'text/bbcode') {
if ($i['title']) {
$ret['name'] = $i['title'];
}
if ($i['summary']) {
$ret['summary'] = bbcode($i['summary'], [ $bbopts => true ]);
}
$ret['content'] = bbcode($i['body'], [ $bbopts => true ]);
$ret['source'] = [ 'content' => $i['body'], 'mediaType' => 'text/bbcode' ];
if ($ret['summary']) {
$ret['source']['summary'] = $i['summary'];
}
}
$actor = self::encode_person($i['author'],false);
if ($actor) {
$ret['actor'] = $actor;
}
else {
return [];
}
$ret['url'] = $ret['id'];
// $ret['url'] = [
// 'type' => 'Link',
// 'rel' => 'alternate',
// 'mediaType' => 'text/html',
// 'href' => $ret['id']
// ];
$t = self::encode_taxonomy($i);
if ($t) {
$ret['tag'] = $t;
}
$a = self::encode_attachment($i);
if ($a) {
$ret['attachment'] = $a;
}
if ($activitypub && $has_images && $ret['type'] === 'Note') {
$img = [];
foreach ($images as $match) {
$img[] = [ 'type' => 'Image', 'url' => $match[2] ];
}
if (! $ret['attachment']) {
$ret['attachment'] = [];
}
$ret['attachment'] = array_merge($img,$ret['attachment']);
}
// addressing madness
if ($activitypub) {
$public = (($i['item_private']) ? false : true);
$top_level = (($i['mid'] === $i['parent_mid']) ? true : false);
if ($public) {
if ($top_level) {
$ret['to'] = [ ACTIVITY_PUBLIC_INBOX ];
$ret['cc'] = [ z_root() . '/followers/' . substr($i['author']['xchan_addr'],0,strpos($i['author']['xchan_addr'],'@')) ];
}
else {
$ret['to'] = [ z_root() . '/followers/' . substr($i['author']['xchan_addr'],0,strpos($i['author']['xchan_addr'],'@')) ];
$ret['cc'] = [ ACTIVITY_PUBLIC_INBOX ];
}
}
else {
// private activity
if ($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) && $mention['href'] && ! in_array($mention['href'],$ret['to'])) {
$ret['to'][] = $mention['href'];
}
}
}
$d = q("select hubloc_id_url from hubloc left join item on hubloc_hash = owner_xchan where id = %d limit 1",
intval($i['parent'])
);
if ($d) {
if (! in_array($d[0]['hubloc_id_url'],$ret['to'])) {
$ret['cc'] = [ $d[0]['hubloc_id_url'] ];
}
}
}
}
$mentions = self::map_mentions($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) {
if (! $i['term']) {
return [];
}
$list = [];
foreach ($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 (" . $list . ") ");
if ($details) {
foreach ($details as $d) {
$ret[] = $d['hubloc_id_url'];
}
}
}
}
return $ret;
}
static function encode_person($p, $extended = true, $activitypub = false) {
$ret = [];
if (! $p['xchan_url'])
return $ret;
if (! $extended) {
return $p['xchan_url'];
}
$c = ((array_key_exists('channel_id',$p)) ? $p : channelx_by_hash($p['xchan_hash']));
$ret['type'] = 'Person';
if ($c) {
$role = PConfig::Get($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,
];
$ret['url'] = $p['xchan_url'];
if ($activitypub && get_config('system','activitypub',true)) {
if ($c) {
if (get_pconfig($c['channel_id'],'system','activitypub',true)) {
$ret['inbox'] = z_root() . '/inbox/' . $c['channel_address'];
}
else {
$ret['inbox'] = null;
}
$ret['outbox'] = z_root() . '/outbox/' . $c['channel_address'];
$ret['followers'] = z_root() . '/followers/' . $c['channel_address'];
$ret['following'] = z_root() . '/following/' . $c['channel_address'];
$ret['endpoints'] = [ 'sharedInbox' => z_root() . '/inbox' ];
$ret['publicKey'] = [
'id' => $p['xchan_url'],
'owner' => $p['xchan_url'],
'publicKeyPem' => $p['xchan_pubkey']
];
// map other nomadic identities linked with this channel
$locations = [];
$locs = Libzot::encode_locations($c);
if ($locs) {
foreach ($locs as $loc) {
if ($loc['url'] !== z_root()) {
$locations[] = $loc['id_url'];
}
}
}
if ($locations) {
if (count($locations) === 1) {
$locations = array_shift($locations);
}
$ret['copiedTo'] = $locations;
$ret['alsoKnownAs'] = $locations;
}
$cp = get_cover_photo($c['channel_id'],'array');
if ($cp) {
$ret['image'] = [
'type' => 'Image',
'mediaType' => $cp['type'],
'url' => $cp['url']
];
}
$dp = q("select about from profile where uid = %d and is_default = 1",
intval($c['channel_id'])
);
if ($dp && $dp[0]['about']) {
$ret['summary'] = bbcode($dp[0]['about'],['export' => true ]);
}
}
else {
$collections = get_xconfig($p['xchan_hash'],'activitypub','collections',[]);
if ($collections) {
$ret = array_merge($ret,$collections);
}
else {
$ret['inbox'] = null;
$ret['outbox'] = null;
}
}
}
else {
$ret['publicKey'] = [
'id' => $p['xchan_url'],
'owner' => $p['xchan_url'],
'publicKeyPem' => $p['xchan_pubkey']
];
}
$arr = [ 'xchan' => $p, 'encoded' => $ret, 'activitypub' => $activitypub ];
call_hooks('encode_person', $arr);
$ret = $arr['encoded'];
return $ret;
}
static function activity_mapper($verb) {
if (strpos($verb,'/') === false) {
return $verb;
}
$acts = [
'http://activitystrea.ms/schema/1.0/post' => 'Create',
'http://activitystrea.ms/schema/1.0/share' => 'Announce',
'http://activitystrea.ms/schema/1.0/update' => 'Update',
'http://activitystrea.ms/schema/1.0/like' => 'Like',
'http://activitystrea.ms/schema/1.0/favorite' => 'Like',
'http://purl.org/zot/activity/dislike' => 'Dislike',
'http://activitystrea.ms/schema/1.0/tag' => 'Add',
'http://activitystrea.ms/schema/1.0/follow' => 'Follow',
'http://activitystrea.ms/schema/1.0/unfollow' => 'Unfollow',
];
call_hooks('activity_mapper',$acts);
if (array_key_exists($verb,$acts) && $acts[$verb]) {
return $acts[$verb];
}
// Reactions will just map to normal activities
if (strpos($verb,ACTIVITY_REACT) !== false)
return 'Create';
if (strpos($verb,ACTIVITY_MOOD) !== 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: ' . $verb);
return 'Create';
// return false;
}
static function activity_obj_mapper($obj) {
if (strpos($obj,'/') === false) {
return $obj;
}
$objs = [
'http://activitystrea.ms/schema/1.0/note' => 'Note',
'http://activitystrea.ms/schema/1.0/comment' => 'Note',
'http://activitystrea.ms/schema/1.0/person' => 'Person',
'http://purl.org/zot/activity/profile' => 'Profile',
'http://activitystrea.ms/schema/1.0/photo' => 'Image',
'http://activitystrea.ms/schema/1.0/profile-photo' => 'Icon',
'http://activitystrea.ms/schema/1.0/event' => 'Event',
'http://activitystrea.ms/schema/1.0/wiki' => 'Document',
'http://purl.org/zot/activity/location' => 'Place',
'http://purl.org/zot/activity/chessgame' => 'Game',
'http://purl.org/zot/activity/tagterm' => 'zot:Tag',
'http://purl.org/zot/activity/thing' => 'Object',
'http://purl.org/zot/activity/file' => 'zot:File',
'http://purl.org/zot/activity/mood' => 'zot:Mood',
];
call_hooks('activity_obj_mapper',$objs);
if (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
*
*/
$person_obj = $act->actor;
if ($act->type === 'Follow') {
$their_follow_id = $act->id;
}
elseif ($act->type === 'Accept') {
$my_follow_id = z_root() . '/follow/' . $contact['id'];
}
if (is_array($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');
$p = Permissions::FilledPerms($x['perms_connect']);
// add tag_deliver permissions to remote groups
if (is_array($person_obj) && $person_obj['type'] === 'Group') {
$p['tag_deliver'] = 1;
}
$their_perms = Permissions::serialise($p);
if ($contact && $contact['abook_id']) {
// A relationship of some form already exists on this site.
switch($act->type) {
case 'Follow':
// 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'],'activitypub','their_follow_id', $their_follow_id);
Master::Summon([ 'Notifier', 'permissions_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();
$r = q("update abook set abook_instance = '%s', abook_not_here = 0
where abook_id = %d and abook_channel = %d",
dbesc($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'],'activitypub','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']);
$my_perms = Permissions::serialise($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)
AbConfig::Set($channel['channel_id'],$ret['xchan_hash'],'system','my_perms',$my_perms);
if ($their_perms)
AbConfig::Set($channel['channel_id'],$ret['xchan_hash'],'system','their_perms',$their_perms);
if ($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', 'permissions_accept', $new_connection[0]['abook_id'] ]);
// Send back a Follow notification to them
Master::Summon([ 'Notifier', 'permissions_create', $new_connection[0]['abook_id'] ]);
}
$clone = array();
foreach ($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' => array($clone) ] );
}
}
/* If there is a default group for this channel and permissions are automatic, add this member to it */
if ($channel['channel_default_group'] && $automatic) {
$g = AccessList::rec_byhash($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
del_abconfig($channel['channel_id'],$r[0]['xchan_hash'],'system','their_perms',EMPTY_STR);
}
}
return;
}
static function actor_store($url, $person_obj, $force = false) {
if (! is_array($person_obj)) {
return;
}
// logger('person_obj: ' . print_r($person_obj,true));
// We may have been passed a cached entry. If it is, and the cache duration has expired
// fetch a fresh copy before continuing.
if (array_key_exists('cached',$person_obj)) {
if (array_key_exists('updated',$person_obj) && (datetime_convert('UTC','UTC',$person_obj['updated']) < datetime_convert('UTC','UTC','now - ' . self::$ACTOR_CACHE_DAYS . ' days') || $force)) {
$person_obj = self::fetch($url);
}
else {
return;
}
}
if (is_array($person_obj) && array_key_exists('movedTo',$person_obj) && $person_obj['movedTo'] && ! is_array($person_obj['movedTo'])) {
$tgt = self::fetch($person_obj['movedTo']);
self::actor_store($person_obj['movedTo'],$tgt);
ActivityPub::move($person_obj['id'],$tgt);
return;
}
$url = $person_obj['id'];
if (! $url) {
return;
}
$name = $person_obj['name'];
if (! $name)
$name = $person_obj['preferredUsername'];
if (! $name)
$name = t('Unknown');
$username = $person_obj['preferredUsername'];
$h = parse_url($url);
if ($h && $h['host']) {
$username .= '@' . $h['host'];
}
if ($person_obj['icon']) {
if (is_array($person_obj['icon'])) {
if (array_key_exists('url',$person_obj['icon']))
$icon = $person_obj['icon']['url'];
else
$icon = $person_obj['icon'][0]['url'];
}
else
$icon = $person_obj['icon'];
}
if (! $icon) {
$icon = z_root() . '/' . get_default_profile_photo();
}
$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;
}
$inbox = $person_obj['inbox'];
// either an invalid identity or a cached entry of some kind which didn't get caught above
if ((! $inbox) || strpos($inbox,z_root()) !== false) {
return;
}
$collections = [];
if ($inbox) {
$collections['inbox'] = $inbox;
if ($person_obj['outbox'])
$collections['outbox'] = $person_obj['outbox'];
if ($person_obj['followers'])
$collections['followers'] = $person_obj['followers'];
if ($person_obj['following'])
$collections['following'] = $person_obj['following'];
if ($person_obj['endpoints'] && is_array($person_obj['endpoints']) && $person_obj['endpoints']['sharedInbox'])
$collections['sharedInbox'] = $person_obj['endpoints']['sharedInbox'];
}
if (isset($person_obj['publicKey']['publicKeyPem'])) {
if ($person_obj['id'] === $person_obj['publicKey']['owner']) {
$pubkey = $person_obj['publicKey']['publicKeyPem'];
if (strstr($pubkey,'RSA ')) {
$pubkey = Keyutils::rsatopem($pubkey);
}
}
}
$r = q("select * from xchan where xchan_hash = '%s' limit 1",
dbesc($url)
);
if (! $r) {
// create a new record
$r = xchan_store_lowlevel(
[
'xchan_hash' => $url,
'xchan_guid' => $url,
'xchan_pubkey' => $pubkey,
'xchan_addr' => ((strpos($username,'@')) ? $username : ''),
'xchan_url' => $profile,
'xchan_name' => $name,
'xchan_name_date' => datetime_convert(),
'xchan_network' => 'activitypub',
'xchan_photo_date' => datetime_convert('UTC','UTC','1968-01-01'),
'xchan_photo_l' => z_root() . '/' . get_default_profile_photo(),
'xchan_photo_m' => z_root() . '/' . get_default_profile_photo(80),
'xchan_photo_s' => z_root() . '/' . get_default_profile_photo(48),
'xchan_photo_mimetype' => 'image/png',
]
);
}
else {
// Record exists. Cache existing records for a set number of days
// then refetch to catch updated profile photos, names, etc.
if ($r[0]['xchan_name_date'] >= datetime_convert('UTC','UTC','now - ' . self::$ACTOR_CACHE_DAYS . ' days')) {
return;
}
// update existing record
$u = q("update xchan set xchan_name = '%s', xchan_pubkey = '%s', xchan_network = '%s', xchan_name_date = '%s' where xchan_hash = '%s'",
dbesc($name),
dbesc($pubkey),
dbesc('activitypub'),
dbesc(datetime_convert()),
dbesc($url)
);
if (strpos($username,'@') && ($r[0]['xchan_addr'] !== $username)) {
$r = q("update xchan set xchan_addr = '%s' where xchan_hash = '%s'",
dbesc($username),
dbesc($url)
);
}
}
if ($collections) {
set_xconfig($url,'activitypub','collections',$collections);
}
$h = q("select * from hubloc where hubloc_hash = '%s' limit 1",
dbesc($url)
);
$m = parse_url($url);
if ($m) {
$hostname = $m['host'];
$baseurl = $m['scheme'] . '://' . $m['host'] . (($m['port']) ? ':' . $m['port'] : '');
}
if (! $h) {
$r = hubloc_store_lowlevel(
[
'hubloc_guid' => $url,
'hubloc_hash' => $url,
'hubloc_id_url' => $url,
'hubloc_addr' => ((strpos($username,'@')) ? $username : ''),
'hubloc_network' => 'activitypub',
'hubloc_url' => $baseurl,
'hubloc_host' => $hostname,
'hubloc_callback' => $inbox,
'hubloc_updated' => datetime_convert(),
'hubloc_primary' => 1
]
);
}
else {
if (strpos($username,'@') && ($h[0]['hubloc_addr'] !== $username)) {
$r = q("update hubloc set hubloc_addr = '%s' where hubloc_hash = '%s'",
dbesc($username),
dbesc($url)
);
}
if ($inbox !== $h[0]['hubloc_callback']) {
$r = q("update hubloc set hubloc_callback = '%s' where hubloc_hash = '%s'",
dbesc($inbox),
dbesc($url)
);
}
$r = q("update hubloc set hubloc_updated = '%s' where hubloc_hash = '%s'",
dbesc(datetime_convert()),
dbesc($url)
);
}
if (! $icon) {
$icon = z_root() . '/' . get_default_profile_photo(300);
}
Master::Summon( [ 'Xchan_photo', bin2hex($icon), bin2hex($url) ] );
}
static function drop($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);
}
elseif (in_array($act->actor['id'],[ $r[0]['author_xchan'], $r[0]['owner_xchan'] ])) {
drop_item($r[0]['id'],false);
}
}
// sort function width decreasing
static function vid_sort($a,$b) {
if ($a['width'] === $b['width'])
return 0;
return (($a['width'] > $b['width']) ? -1 : 1);
}
static function share_bb($obj) {
// @fixme - error check and set defaults
$name = urlencode($obj['actor']['name']);
$profile = $obj['actor']['id'];
$photo = $obj['icon']['url'];
$s = "\r\n[share author='" . $name .
"' profile='" . $profile .
"' avatar='" . $photo .
"' link='" . $act->obj['id'] .
"' auth='" . ((is_matrix_url($act->obj['id'])) ? 'true' : 'false' ) .
"' posted='" . $act->obj['published'] .
"' message_id='" . $act->obj['id'] .
"']";
return $s;
}
static function get_actor_bbmention($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 '@{' . $id . '}';
}
static function decode_note($act) {
$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['parent_mid'] = $act->parent_id;
if ($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 (in_array($act->type, [ 'Like', 'Dislike', 'Flag', 'Block', 'Announce', 'Accept', 'Reject',
'TentativeAccept', 'TentativeReject', 'emojiReaction' ])) {
$response_activity = true;
$s['mid'] = $act->id;
$s['parent_mid'] = $act->obj['id'];
$s['replyto'] = $act->replyto;
// over-ride the object timestamp with the activity
if ($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', $act->obj));
// if the object is an actor it is not really a response activity, reset a couple of things
if (ActivityStreams::is_an_actor($act->obj['type'])) {
$obj_actor = $act->actor;
$s['parent_mid'] = $s['mid'];
}
// ensure we store the original actor
self::actor_store($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, ((ActivityStreams::is_an_actor($act->obj['type'])) ? t('Profile') : $act->obj['type'])) . EOL . EOL . $content['content'];
}
if ($act->type === 'Dislike') {
$content['content'] = sprintf( t('Doesn\'t like %1$s\'s %2$s'),$mention, ((ActivityStreams::is_an_actor($act->obj['type'])) ? t('Profile') : $act->obj['type'])) . EOL . EOL . $content['content'];
}
if ($act->type === 'Accept' && $act->obj['type'] === 'Event' ) {
$content['content'] = sprintf( t('Will attend %1$s\'s %2$s'),$mention,$act->obj['type']) . EOL . EOL . $content['content'];
}
if ($act->type === 'Reject' && $act->obj['type'] === 'Event' ) {
$content['content'] = sprintf( t('Will not attend %1$s\'s %2$s'),$mention,$act->obj['type']) . EOL . EOL . $content['content'];
}
if ($act->type === 'TentativeAccept' && $act->obj['type'] === 'Event' ) {
$content['content'] = sprintf( t('May attend %1$s\'s %2$s'),$mention,$act->obj['type']) . EOL . EOL . $content['content'];
}
if ($act->type === 'TentativeReject' && $act->obj['type'] === 'Event' ) {
$content['content'] = sprintf( t('May not attend %1$s\'s %2$s'),$mention,$act->obj['type']) . EOL . EOL . $content['content'];
}
if ($act->type === 'Announce') {
$content['content'] = sprintf( t('&#x1f501; Repeated %1$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 (! $s['created'])
$s['created'] = datetime_convert();
if (! $s['edited'])
$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($content,'content'));
// handle some of the more widely used of the numerous and varied ways of deleting something
if ($act->type === 'Tombstone') {
$s['item_deleted'] = 1;
}
if ($act->type === 'Create' && $act->obj['type'] === 'Tombstone') {
$s['item_deleted'] = 1;
}
if ($act->type === 'Delete') {
$s['item_deleted'] = 1;
}
if (array_key_exists('sensitive',$act->obj) && boolval($act->obj['sensitive'])) {
$s['item_nsfw'] = 1;
}
$s['verb'] = self::activity_mapper($act->type);
$s['obj_type'] = self::activity_obj_mapper($act->obj['type']);
$s['obj'] = $act->obj;
if (is_array($obj) && array_path_exists('actor/id',$s['obj'])) {
$s['obj']['actor'] = $s['obj']['actor']['id'];
}
// @todo add target if present
$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'] = $a;
}
}
if ($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 (! $response_activity) {
if ($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) {
$s['body'] .= "\n\n" . '[zmg]' . $vurl['href'] . '[/zmg]';
break;
}
}
}
elseif (is_string($act->obj['url'])) {
if (strpos($s['body'],$act->obj['url']) === false) {
$s['body'] .= "\n\n" . '[zmg]' . $act->obj['url'] . '[/zmg]';
}
}
}
}
if ($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'] = $s['mid'];
}
if ($act->recips && (! in_array(ACTIVITY_PUBLIC_INBOX,$act->recips)))
$s['item_private'] = 1;
if (is_array($act->obj)) {
if (array_key_exists('directMessage',$act->obj) && intval($act->obj['directMessage'])) {
$s['item_private'] = 2;
}
}
set_iconfig($s,'activitypub','recips',$act->raw_recips);
if ($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) {
$is_sys_channel = is_sys_channel($channel['channel_id']);
$is_child_node = false;
// Mastodon only allows visibility in public timelines if the public inbox is listed in the 'to' field.
// They are hidden in the public timeline if the public inbox is listed in the 'cc' field.
// This is not part of the activitypub protocol - we might change this to show all public posts in pubstream at some point.
$pubstream = ((is_array($act->obj) && array_key_exists('to', $act->obj) && is_array($act->obj['to']) && in_array(ACTIVITY_PUBLIC_INBOX, $act->obj['to'])) ? true : false);
// very unpleasant and imperfect way of determining a Mastodon DM
if ($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;
}
$allowed = false;
if ($is_child_node) {
$p = q("select id from item where mid = '%s' and uid = %d and item_wall = 1",
dbesc($item['parent_mid']),
intval($channel['channel_id'])
);
if ($p) {
// check permissions against the author, not the sender
$allowed = perm_is_allowed($channel['channel_id'],$item['author_xchan'],'post_comments');
if (! $allowed) {
logger('rejected comment from ' . $item['author_xchan'] . ' for ' . $channel['channel_address']);
logger('rejected: ' . print_r($item,true), LOGGER_DATA);
// let the sender know we received their comment but we don't permit spam here.
self::send_rejection_activity($channel,$item['author_xchan'],$item);
return;
}
if (perm_is_allowed($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 && $pubstream && $item['owner_xchan'] !== $observer_hash) {
$allowed = false;
}
}
}
elseif (perm_is_allowed($channel['channel_id'],$observer_hash,'send_stream') || ($is_sys_channel && $pubstream)) {
$allowed = true;
}
if (tgroup_check($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);
$allowed = true;
}
if (intval($channel['channel_system'])) {
if (! check_pubstream_channelallowed($observer_hash)) {
$allowed = false;
}
// don't allow pubstream posts if the sender even has a clone on a pubstream blacklisted 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 (! $allowed) {
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'] && $item['owner_xchan'])) {
logger('owner or author missing.');
return;
}
if ($channel['channel_system']) {
if (! MessageFilter::evaluate($item,get_config('system','pubstream_incl'),get_config('system','pubstream_excl'))) {
logger('post is filtered');
return;
}
}
$abook = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
dbesc($observer_hash),
intval($channel['channel_id'])
);
if (! post_is_importable($channel['channel_id'],$item,$abook[0])) {
logger('post is filtered');
return;
}
if ($act->obj['conversation']) {
set_iconfig($item,'ostatus','conversation',$act->obj['conversation'],1);
}
// This isn't perfect but the best we can do for now.
$item['comment_policy'] = 'authenticated';
set_iconfig($item,'activitypub','recips',$act->raw_recips);
if (! (isset($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)) {
$item['item_verified'] = 1;
}
if ($is_child_node) {
$p = q("select parent_mid from item where mid = '%s' and uid = %d limit 1",
dbesc($item['parent_mid']),
intval($item['uid'])
);
if (! $p) {
if (! get_config('system','activitypub',true)) {
return;
}
else {
$a = false;
if (PConfig::Get($channel['channel_id'],'system','hyperdrive',true) || $act->type === 'Announce') {
$a = (($fetch_parents) ? self::fetch_and_store_parents($channel,$observer_hash,$act,$item) : false);
}
if ($a) {
$p = q("select parent_mid from item where mid = '%s' and uid = %d limit 1",
dbesc($item['parent_mid']),
intval($item['uid'])
);
}
else {
// if no parent was fetched, turn into a top-level post
// @TODO we maybe could accept these is we formatted the body correctly with share_bb()
// or at least provided a link to the object
if (in_array($act->type,[ 'Like','Dislike','Announce' ])) {
return;
}
// turn into a top level post
$item['parent_mid'] = $item['mid'];
$item['thr_parent'] = $item['mid'];
}
}
}
if ($p[0]['parent_mid'] !== $item['parent_mid']) {
$item['thr_parent'] = $item['parent_mid'];
}
else {
$item['thr_parent'] = $p[0]['parent_mid'];
}
$item['parent_mid'] = $p[0]['parent_mid'];
}
$r = q("select id, created, edited from item where mid = '%s' and uid = %d limit 1",
dbesc($item['mid']),
intval($item['uid'])
);
if ($r) {
if ($item['edited'] > $r[0]['edited']) {
$item['id'] = $r[0]['id'];
$x = item_store_update($item);
}
else {
return;
}
}
else {
$x = item_store($item);
}
if (is_array($x) && $x['item_id']) {
if ($is_child_node) {
if ($item['owner_xchan'] === $channel['channel_hash']) {
// We are the owner of this conversation, so send all received comments back downstream
Master::Summon(array('Notifier','comment-import',$x['item_id']));
}
$r = q("select * from item where id = %d limit 1",
intval($x['item_id'])
);
if ($r) {
send_status_notifications($x['item_id'],$r[0]);
}
}
sync_an_item($channel['channel_id'],$x['item_id']);
}
}
static public function find_best_identity($xchan) {
$r = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
dbesc($xchan)
);
if ($r) {
return $r[0]['hubloc_hash'];
}
return $xchan;
}
static public function fetch_and_store_parents($channel,$observer_hash,$act,$item) {
logger('fetching parents');
$p = [];
$current_act = $act;
$current_item = $item;
while($current_item['parent_mid'] !== $current_item['mid']) {
$n = self::fetch($current_item['parent_mid']);
if (! $n) {
break;
}
// set client flag to convert objects to implied activities
$a = new ActivityStreams($n,null,true);
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,null,true);
}
logger($a->debug());
if (! $a->is_valid()) {
logger('not a valid activity');
break;
}
if (is_array($a->actor) && array_key_exists('id',$a->actor)) {
Activity::actor_store($a->actor['id'],$a->actor);
}
$item = null;
switch ($a->type) {
case 'Create':
case 'Update':
case 'Like':
case 'Dislike':
case 'Announce':
$item = Activity::decode_note($a);
break;
default:
break;
}
if (! $item) {
break;
}
$hookinfo = [
'a' => $a,
'item' => $item
];
call_hooks('fetch_and_store',$hookinfo);
$item = $hookinfo['item'];
if($item) {
array_unshift($p,[ $a, $item ]);
if ($item['parent_mid'] === $item['mid'] || count($p) > 30) {
break;
}
}
$current_act = $a;
$current_item = $item;
}
if ($p) {
foreach ($p as $pv) {
if ($pv[0]->is_valid()) {
Activity::store($channel,$observer_hash,$pv[0],$pv[1],false);
}
}
return true;
}
return false;
}
static function bb_attach($attach,$body) {
$ret = false;
foreach ($attach as $a) {
if (strpos($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) && strpos($a['type'], 'video') === 0) {
if (self::media_not_in_body($a['href'],$body)) {
$ret .= "\n\n" . '[video]' . $a['href'] . '[/video]';
}
}
if (array_key_exists('type',$a) && strpos($a['type'], 'audio') === 0) {
if (self::media_not_in_body($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) {
$ret = false;
if (is_array($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' && $content['event'] && (! strpos($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 {
$event['nofinish'] = true;
}
if (array_key_exists('eventRepeat',$act)) {
$event['event_repeat'] = $act['eventRepeat'];
}
}
foreach ([ 'name', 'summary', 'content' ] as $a) {
if (($x = self::get_textfield($act,$a)) !== false) {
$content[$a] = $x;
}
}
if ($event) {
$event['summary'] = html2bbcode($content['summary']);
if (! $event['summary']) {
if ($content['name']) {
$event['summary'] = html2plain(purify_html($content['name']),256);
}
}
$event['description'] = html2bbcode($content['content']);
if ($event['summary'] && $event['dtstart']) {
$content['event'] = $event;
}
}
if (array_key_exists('source',$act) && array_key_exists('mediaType',$act['source'])) {
if ($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 $content;
}
static function send_rejection_activity($channel,$observer_hash,$item) {
$recip = q("select * from hubloc where hubloc_hash = '%s' limit 1",
dbesc($observer_hash)
);
if (! $recip) {
return;
}
$arr = [
'id' => z_root() . '/bounces/' . new_uuid(),
'to' => [ $observer_hash ],
'type' => 'Reject',
'actor' => channel_url($channel),
'name' => 'Permission denied',
'object' => $item['message_id']
];
$msg = array_merge(['@context' => [
ACTIVITYSTREAMS_JSONLD_REV,
'https://w3id.org/security/v1',
z_root() . ZOT_APSCHEMA_REV
]], $arr);
$queue_id = ActivityPub::queue_message(json_encode($msg, JSON_UNESCAPED_SLASHES),$channel,$recip[0]);
do_delivery( [ $queue_id ] );
}
// 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;
}
}
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