4 use Friendica\Database\DBM;
5 use Friendica\Protocol\OStatus;
7 function hub_return($valid,$body) {
10 header($_SERVER["SERVER_PROTOCOL"] . ' 200 ' . 'OK');
14 header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . 'Not Found');
21 // when receiving an XML feed, always return OK
23 function hub_post_return() {
25 header($_SERVER["SERVER_PROTOCOL"] . ' 200 ' . 'OK');
32 function pubsub_init(App $a) {
34 $nick = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
35 $contact_id = (($a->argc > 2) ? intval($a->argv[2]) : 0 );
37 if ($_SERVER['REQUEST_METHOD'] === 'GET') {
38 $hub_mode = ((x($_GET,'hub_mode')) ? notags(trim($_GET['hub_mode'])) : '');
39 $hub_topic = ((x($_GET,'hub_topic')) ? notags(trim($_GET['hub_topic'])) : '');
40 $hub_challenge = ((x($_GET,'hub_challenge')) ? notags(trim($_GET['hub_challenge'])) : '');
41 $hub_lease = ((x($_GET,'hub_lease_seconds')) ? notags(trim($_GET['hub_lease_seconds'])) : '');
42 $hub_verify = ((x($_GET,'hub_verify_token')) ? notags(trim($_GET['hub_verify_token'])) : '');
44 logger('pubsub: Subscription from ' . $_SERVER['REMOTE_ADDR'] . ' Mode: ' . $hub_mode . ' Nick: ' . $nick);
45 logger('pubsub: data: ' . print_r($_GET,true), LOGGER_DATA);
47 $subscribe = (($hub_mode === 'subscribe') ? 1 : 0);
49 $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
52 if (!DBM::is_result($r)) {
53 logger('pubsub: local account not found: ' . $nick);
54 hub_return(false, '');
60 if (!empty($hub_verify)) {
61 $sql_extra = sprintf(" AND `hub-verify` = '%s' ", dbesc($hub_verify));
62 $log_info = 'hub-verify: ' . $hub_verify;
64 $sql_extra = sprintf(" AND `id` = %d ", intval($contact_id));
65 $log_info = 'contact-id: ' . $contact_id;
68 $r = q("SELECT * FROM `contact` WHERE `uid` = %d
69 AND NOT `blocked` AND NOT `pending` $sql_extra LIMIT 1",
72 if (!DBM::is_result($r)) {
73 logger('pubsub: contact not found. ' . $log_info);
74 hub_return(false, '');
77 if (!empty($hub_topic)) {
78 if (!link_compare($hub_topic,$r[0]['poll'])) {
79 logger('pubsub: hub topic ' . $hub_topic . ' != ' . $r[0]['poll']);
80 // should abort but let's humour them.
86 // We must initiate an unsubscribe request with a verify_token.
87 // Don't allow outsiders to unsubscribe us.
89 if ($hub_mode === 'unsubscribe') {
90 if (!strlen($hub_verify)) {
91 logger('pubsub: bogus unsubscribe');
92 hub_return(false, '');
96 if (!empty($hub_mode)) {
97 dba::update('contact', ['subhub' => $subscribe], ['id' => $contact['id']]);
98 logger('pubsub: ' . $hub_mode . ' success');
100 hub_return(true, $hub_challenge);
104 require_once('include/security.php');
106 function pubsub_post(App $a) {
108 $xml = file_get_contents('php://input');
110 logger('pubsub: feed arrived from ' . $_SERVER['REMOTE_ADDR'] . ' for ' . $a->cmd );
111 logger('pubsub: user-agent: ' . $_SERVER['HTTP_USER_AGENT'] );
112 logger('pubsub: data: ' . $xml, LOGGER_DATA);
114 $nick = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
115 $contact_id = (($a->argc > 2) ? intval($a->argv[2]) : 0 );
117 $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
120 if (!DBM::is_result($r)) {
126 $r = q("SELECT * FROM `contact` WHERE `subhub` AND `id` = %d AND `uid` = %d
127 AND (`rel` = %d OR `rel` = %d OR network = '%s') AND NOT `blocked` LIMIT 1",
129 intval($importer['uid']),
130 intval(CONTACT_IS_SHARING),
131 intval(CONTACT_IS_FRIEND),
135 if (!DBM::is_result($r)) {
136 $author = OStatus::salmonAuthor($xml, $importer);
137 if (!empty($author['contact-id'])) {
138 $contact = dba::selectFirst('contact', [], ['id' => $author['contact-id']]);
139 if (!in_array($contact['rel'], [CONTACT_IS_SHARING, CONTACT_IS_FRIEND]) && ($contact['network'] != NETWORK_FEED)) {
140 logger('Contact ' . $author['contact-id'] . ' is not expected to share with us - ignored.');
143 logger('pubsub: no contact record for "'.$nick.' ('.$contact_id.')" - using '.$author['contact-id'].' instead.');
149 // we have no way to match Diaspora guid's with atom post id's and could get duplicates.
150 // we'll assume that direct delivery is robust (and this is a bad assumption, but the duplicates are messy).
152 if ($r[0]['network'] === NETWORK_DIASPORA) {
157 require_once('include/items.php');
159 consume_feed($xml,$importer,$contact,$feedhub,1,1);
161 // do it a second time so that any children find their parents.
163 consume_feed($xml,$importer,$contact,$feedhub,1,2);