3 require_once('library/simplepie/simplepie.inc');
4 require_once('include/items.php');
5 require_once('include/event.php');
8 function dfrn_notify_post(&$a) {
10 $dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : '');
11 $dfrn_version = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version'] : 2.0);
12 $challenge = ((x($_POST,'challenge')) ? notags(trim($_POST['challenge'])) : '');
13 $data = ((x($_POST,'data')) ? $_POST['data'] : '');
14 $key = ((x($_POST,'key')) ? $_POST['key'] : '');
15 $dissolve = ((x($_POST,'dissolve')) ? intval($_POST['dissolve']) : 0);
16 $perm = ((x($_POST,'perm')) ? notags(trim($_POST['perm'])) : 'r');
19 if($dfrn_version >= 2.21) {
20 $writable = (($perm === 'rw') ? 1 : 0);
24 if(strpos($dfrn_id,':') == 1) {
25 $direction = intval(substr($dfrn_id,0,1));
26 $dfrn_id = substr($dfrn_id,2);
29 $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
34 logger('dfrn_notify: could not match challenge to dfrn_id ' . $dfrn_id . ' challenge=' . $challenge);
38 $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
43 // find the local user who owns this relationship.
48 $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
51 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
54 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
61 // be careful - $importer will contain both the contact information for the contact
62 // sending us the post, and also the user information for the person receiving it.
63 // since they are mixed together, it is easy to get them confused.
65 $r = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`,
66 `contact`.`pubkey` AS `cpubkey`,
67 `contact`.`prvkey` AS `cprvkey`,
68 `contact`.`thumb` AS `thumb`,
69 `contact`.`url` as `url`,
70 `contact`.`name` as `senderName`,
73 LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
74 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
75 AND `user`.`nickname` = '%s' AND `user`.`account_expired` = 0 $sql_extra LIMIT 1",
80 logger('dfrn_notify: contact not found for dfrn_id ' . $dfrn_id);
85 // $importer in this case contains the contact record for the remote contact joined with the user record of our user.
89 if(($writable != (-1)) && ($writable != $importer['writable'])) {
90 q("UPDATE `contact` SET `writable` = %d WHERE `id` = %d LIMIT 1",
92 intval($importer['id'])
94 $importer['writable'] = $writable;
97 logger('dfrn_notify: received notify from ' . $importer['name'] . ' for ' . $importer['username']);
98 logger('dfrn_notify: data: ' . $data, LOGGER_DATA);
103 * Relationship is dissolved permanently
106 require_once('include/Contact.php');
107 contact_remove($importer['id']);
108 logger('relationship dissolved : ' . $importer['name'] . ' dissolved ' . $importer['username']);
114 $rawkey = hex2bin(trim($key));
115 logger('rino: md5 raw key: ' . md5($rawkey));
118 if($dfrn_version >= 2.1) {
119 if((($importer['duplex']) && strlen($importer['cprvkey'])) || (! strlen($importer['cpubkey']))) {
120 openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
123 openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
127 if((($importer['duplex']) && strlen($importer['cpubkey'])) || (! strlen($importer['cprvkey']))) {
128 openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
131 openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
135 logger('rino: received key : ' . $final_key);
136 $data = aes_decrypt(hex2bin($data),$final_key);
137 logger('rino: decrypted data: ' . $data, LOGGER_DATA);
141 $ret = local_delivery($importer,$data);
148 function dfrn_notify_content(&$a) {
150 if(x($_GET,'dfrn_id')) {
152 // initial communication from external contact, $direction is their direction.
153 // If this is a duplex communication, ours will be the opposite.
155 $dfrn_id = notags(trim($_GET['dfrn_id']));
156 $dfrn_version = (float) $_GET['dfrn_version'];
158 logger('dfrn_notify: new notification dfrn_id=' . $dfrn_id);
161 if(strpos($dfrn_id,':') == 1) {
162 $direction = intval(substr($dfrn_id,0,1));
163 $dfrn_id = substr($dfrn_id,2);
166 $hash = random_string();
170 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
172 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
173 VALUES( '%s', '%s', %d ) ",
179 logger('dfrn_notify: challenge=' . $hash, LOGGER_DEBUG );
184 $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
188 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
189 $my_id = '1:' . $dfrn_id;
192 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
193 $my_id = '0:' . $dfrn_id;
200 $r = q("SELECT `contact`.*, `user`.`nickname` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
201 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s'
202 AND `user`.`account_expired` = 0 $sql_extra LIMIT 1",
211 $id_str = $my_id . '.' . mt_rand(1000,9999);
213 $prv_key = trim($r[0]['prvkey']);
214 $pub_key = trim($r[0]['pubkey']);
215 $dplx = intval($r[0]['duplex']);
217 if((($dplx) && (strlen($prv_key))) || ((strlen($prv_key)) && (!(strlen($pub_key))))) {
218 openssl_private_encrypt($hash,$challenge,$prv_key);
219 openssl_private_encrypt($id_str,$encrypted_id,$prv_key);
221 elseif(strlen($pub_key)) {
222 openssl_public_encrypt($hash,$challenge,$pub_key);
223 openssl_public_encrypt($id_str,$encrypted_id,$pub_key);
228 $challenge = bin2hex($challenge);
229 $encrypted_id = bin2hex($encrypted_id);
231 $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
233 $rino_enable = get_config('system','rino_encrypt');
239 header("Content-type: text/xml");
241 echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
242 . '<dfrn_notify>' . "\r\n"
243 . "\t" . '<status>' . $status . '</status>' . "\r\n"
244 . "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
245 . "\t" . '<rino>' . $rino . '</rino>' . "\r\n"
246 . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
247 . "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
248 . '</dfrn_notify>' . "\r\n" ;