2 require_once('include/items.php');
3 require_once('include/auth.php');
4 require_once('include/dfrn.php');
7 function dfrn_poll_init(&$a) {
10 $dfrn_id = ((x($_GET,'dfrn_id')) ? $_GET['dfrn_id'] : '');
11 $type = ((x($_GET,'type')) ? $_GET['type'] : 'data');
12 $last_update = ((x($_GET,'last_update')) ? $_GET['last_update'] : '');
13 $destination_url = ((x($_GET,'destination_url')) ? $_GET['destination_url'] : '');
14 $challenge = ((x($_GET,'challenge')) ? $_GET['challenge'] : '');
15 $sec = ((x($_GET,'sec')) ? $_GET['sec'] : '');
16 $dfrn_version = ((x($_GET,'dfrn_version')) ? (float) $_GET['dfrn_version'] : 2.0);
17 $perm = ((x($_GET,'perm')) ? $_GET['perm'] : 'r');
18 $quiet = ((x($_GET,'quiet')) ? true : false);
23 if(strpos($dfrn_id,':') == 1) {
24 $direction = intval(substr($dfrn_id,0,1));
25 $dfrn_id = substr($dfrn_id,2);
28 if(($dfrn_id === '') && (! x($_POST,'dfrn_id'))) {
29 if((get_config('system','block_public')) && (! local_user()) && (! remote_user())) {
30 http_status_exit(403);
35 $r = q("SELECT `hidewall`,`nickname` FROM `user` WHERE `user`.`nickname` = '%s' LIMIT 1",
39 http_status_exit(404);
40 if(($r[0]['hidewall']) && (! local_user()))
41 http_status_exit(403);
42 $user = $r[0]['nickname'];
45 logger('dfrn_poll: public feed request from ' . $_SERVER['REMOTE_ADDR'] . ' for ' . $user);
46 header("Content-type: application/atom+xml");
47 //echo get_feed_for($a, '', $user,$last_update);
48 echo dfrn_feed($a, '', $user,$last_update);
52 if(($type === 'profile') && (! strlen($sec))) {
57 $sql_extra = sprintf(" AND ( `dfrn-id` = '%s' OR `issued-id` = '%s' ) ", dbesc($dfrn_id),dbesc($dfrn_id));
61 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
62 $my_id = '1:' . $dfrn_id;
65 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
66 $my_id = '0:' . $dfrn_id;
73 $r = q("SELECT `contact`.*, `user`.`username`, `user`.`nickname`
74 FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
75 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
76 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
82 $s = fetch_url($r[0]['poll'] . '?dfrn_id=' . $my_id . '&type=profile-check');
84 logger("dfrn_poll: old profile returns " . $s, LOGGER_DATA);
88 $xml = parse_xml_string($s);
90 if((int) $xml->status == 1) {
91 $_SESSION['authenticated'] = 1;
92 if(! x($_SESSION,'remote'))
93 $_SESSION['remote'] = array();
95 $_SESSION['remote'][] = array('cid' => $r[0]['id'],'uid' => $r[0]['uid'],'url' => $r[0]['url']);
97 $_SESSION['visitor_id'] = $r[0]['id'];
98 $_SESSION['visitor_home'] = $r[0]['url'];
99 $_SESSION['visitor_handle'] = $r[0]['addr'];
100 $_SESSION['visitor_visiting'] = $r[0]['uid'];
102 info( sprintf(t('%1$s welcomes %2$s'), $r[0]['username'] , $r[0]['name']) . EOL);
103 // Visitors get 1 day session.
104 $session_id = session_id();
105 $expire = time() + 86400;
106 q("UPDATE `session` SET `expire` = '%s' WHERE `sid` = '%s'",
112 $profile = $r[0]['nickname'];
113 goaway((strlen($destination_url)) ? $destination_url : $a->get_baseurl() . '/profile/' . $profile);
119 if($type === 'profile-check' && $dfrn_version < 2.2 ) {
121 if((strlen($challenge)) && (strlen($sec))) {
123 q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
124 $r = q("SELECT * FROM `profile_check` WHERE `sec` = '%s' ORDER BY `expire` DESC LIMIT 1",
128 xml_status(3, 'No ticket');
131 $orig_id = $r[0]['dfrn_id'];
132 if(strpos($orig_id, ':'))
133 $orig_id = substr($orig_id,2);
135 $c = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
139 xml_status(3, 'No profile');
143 $sent_dfrn_id = hex2bin($dfrn_id);
144 $challenge = hex2bin($challenge);
148 if(($contact['duplex']) && strlen($contact['prvkey'])) {
149 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
150 openssl_private_decrypt($challenge,$decoded_challenge,$contact['prvkey']);
153 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
154 openssl_public_decrypt($challenge,$decoded_challenge,$contact['pubkey']);
157 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
159 if(strpos($final_dfrn_id,':') == 1)
160 $final_dfrn_id = substr($final_dfrn_id,2);
162 if($final_dfrn_id != $orig_id) {
163 logger('profile_check: ' . $final_dfrn_id . ' != ' . $orig_id, LOGGER_DEBUG);
164 // did not decode properly - cannot trust this site
165 xml_status(3, 'Bad decryption');
168 header("Content-type: text/xml");
169 echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?><dfrn_poll><status>0</status><challenge>$decoded_challenge</challenge><sec>$sec</sec></dfrn_poll>";
178 $dfrn_id = '0:' . $dfrn_id;
181 $dfrn_id = '1:' . $dfrn_id;
188 q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
189 $r = q("SELECT * FROM `profile_check` WHERE `dfrn_id` = '%s' ORDER BY `expire` DESC",
193 return; // NOTREACHED
196 return; // NOTREACHED
204 function dfrn_poll_post(&$a) {
206 $dfrn_id = ((x($_POST,'dfrn_id')) ? $_POST['dfrn_id'] : '');
207 $challenge = ((x($_POST,'challenge')) ? $_POST['challenge'] : '');
208 $url = ((x($_POST,'url')) ? $_POST['url'] : '');
209 $sec = ((x($_POST,'sec')) ? $_POST['sec'] : '');
210 $ptype = ((x($_POST,'type')) ? $_POST['type'] : '');
211 $dfrn_version = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version'] : 2.0);
212 $perm = ((x($_POST,'perm')) ? $_POST['perm'] : 'r');
214 if($ptype === 'profile-check') {
216 if((strlen($challenge)) && (strlen($sec))) {
218 logger('dfrn_poll: POST: profile-check');
220 q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
221 $r = q("SELECT * FROM `profile_check` WHERE `sec` = '%s' ORDER BY `expire` DESC LIMIT 1",
225 xml_status(3, 'No ticket');
228 $orig_id = $r[0]['dfrn_id'];
229 if(strpos($orig_id, ':'))
230 $orig_id = substr($orig_id,2);
232 $c = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
236 xml_status(3, 'No profile');
240 $sent_dfrn_id = hex2bin($dfrn_id);
241 $challenge = hex2bin($challenge);
245 if(($contact['duplex']) && strlen($contact['prvkey'])) {
246 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
247 openssl_private_decrypt($challenge,$decoded_challenge,$contact['prvkey']);
250 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
251 openssl_public_decrypt($challenge,$decoded_challenge,$contact['pubkey']);
254 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
256 if(strpos($final_dfrn_id,':') == 1)
257 $final_dfrn_id = substr($final_dfrn_id,2);
259 if($final_dfrn_id != $orig_id) {
260 logger('profile_check: ' . $final_dfrn_id . ' != ' . $orig_id, LOGGER_DEBUG);
261 // did not decode properly - cannot trust this site
262 xml_status(3, 'Bad decryption');
265 header("Content-type: text/xml");
266 echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?><dfrn_poll><status>0</status><challenge>$decoded_challenge</challenge><sec>$sec</sec></dfrn_poll>";
274 if(strpos($dfrn_id,':') == 1) {
275 $direction = intval(substr($dfrn_id,0,1));
276 $dfrn_id = substr($dfrn_id,2);
280 $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
288 $type = $r[0]['type'];
289 $last_update = $r[0]['last_update'];
291 $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s'",
300 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
304 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
305 $my_id = '1:' . $dfrn_id;
308 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
309 $my_id = '0:' . $dfrn_id;
317 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
324 $owner_uid = $r[0]['uid'];
325 $contact_id = $r[0]['id'];
328 if($type === 'reputation' && strlen($url)) {
329 $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
337 $reputation = $r[0]['rating'];
338 $text = $r[0]['reason'];
340 if($r[0]['id'] == $contact_id) { // inquiring about own reputation not allowed
346 echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
349 <rating>$reputation</rating>
350 <description>$text</description>
358 // Update the writable flag if it changed
359 logger('dfrn_poll: post request feed: ' . print_r($_POST,true),LOGGER_DATA);
360 if($dfrn_version >= 2.21) {
366 if($writable != $contact['writable']) {
367 q("UPDATE `contact` SET `writable` = %d WHERE `id` = %d",
374 header("Content-type: application/atom+xml");
375 //$o = get_feed_for($a,$dfrn_id, $a->argv[1], $last_update, $direction);
376 $o = dfrn_feed($a,$dfrn_id, $a->argv[1], $last_update, $direction);
383 function dfrn_poll_content(&$a) {
385 $dfrn_id = ((x($_GET,'dfrn_id')) ? $_GET['dfrn_id'] : '');
386 $type = ((x($_GET,'type')) ? $_GET['type'] : 'data');
387 $last_update = ((x($_GET,'last_update')) ? $_GET['last_update'] : '');
388 $destination_url = ((x($_GET,'destination_url')) ? $_GET['destination_url'] : '');
389 $sec = ((x($_GET,'sec')) ? $_GET['sec'] : '');
390 $dfrn_version = ((x($_GET,'dfrn_version')) ? (float) $_GET['dfrn_version'] : 2.0);
391 $perm = ((x($_GET,'perm')) ? $_GET['perm'] : 'r');
392 $quiet = ((x($_GET,'quiet')) ? true : false);
395 if(strpos($dfrn_id,':') == 1) {
396 $direction = intval(substr($dfrn_id,0,1));
397 $dfrn_id = substr($dfrn_id,2);
402 // initial communication from external contact
403 $hash = random_string();
407 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
409 if($type !== 'profile') {
410 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
411 VALUES( '%s', '%s', '%s', '%s', '%s' ) ",
414 intval(time() + 60 ),
422 if($type === 'profile')
423 $sql_extra = sprintf(" AND ( `dfrn-id` = '%s' OR `issued-id` = '%s' ) ", dbesc($dfrn_id),dbesc($dfrn_id));
425 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
429 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
430 $my_id = '1:' . $dfrn_id;
433 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
434 $my_id = '0:' . $dfrn_id;
441 $nickname = $a->argv[1];
443 $r = q("SELECT `contact`.*, `user`.`username`, `user`.`nickname`
444 FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
445 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
446 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
454 $id_str = $my_id . '.' . mt_rand(1000,9999);
456 if(($r[0]['duplex'] && strlen($r[0]['pubkey'])) || (! strlen($r[0]['prvkey']))) {
457 openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
458 openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
461 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
462 openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
465 $challenge = bin2hex($challenge);
466 $encrypted_id = bin2hex($encrypted_id);
474 if(($type === 'profile') && (strlen($sec))) {
478 if($dfrn_version < 2.2) {
479 $s = fetch_url($r[0]['poll']
480 . '?dfrn_id=' . $encrypted_id
481 . '&type=profile-check'
482 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
483 . '&challenge=' . $challenge
488 $s = post_url($r[0]['poll'], array(
489 'dfrn_id' => $encrypted_id,
490 'type' => 'profile-check',
491 'dfrn_version' => DFRN_PROTOCOL_VERSION,
492 'challenge' => $challenge,
497 $profile = ((count($r) && $r[0]['nickname']) ? $r[0]['nickname'] : $nickname);
499 switch($destination_url) {
501 $dest = $a->get_baseurl() . '/profile/' . $profile . '?f=&tab=profile';
504 $dest = $a->get_baseurl() . '/photos/' . $profile;
508 $dest = $a->get_baseurl() . '/profile/' . $profile;
511 $dest = $destination_url . '?f=&redir=1';
515 logger("dfrn_poll: sec profile: " . $s, LOGGER_DATA);
517 if(strlen($s) && strstr($s,'<?xml')) {
519 $xml = parse_xml_string($s);
521 logger('dfrn_poll: profile: parsed xml: ' . print_r($xml,true), LOGGER_DATA);
523 logger('dfrn_poll: secure profile: challenge: ' . $xml->challenge . ' expecting ' . $hash);
524 logger('dfrn_poll: secure profile: sec: ' . $xml->sec . ' expecting ' . $sec);
527 if(((int) $xml->status == 0) && ($xml->challenge == $hash) && ($xml->sec == $sec)) {
528 $_SESSION['authenticated'] = 1;
529 if(! x($_SESSION,'remote'))
530 $_SESSION['remote'] = array();
531 $_SESSION['remote'][] = array('cid' => $r[0]['id'],'uid' => $r[0]['uid'],'url' => $r[0]['url']);
532 $_SESSION['visitor_id'] = $r[0]['id'];
533 $_SESSION['visitor_home'] = $r[0]['url'];
534 $_SESSION['visitor_visiting'] = $r[0]['uid'];
536 info( sprintf(t('%1$s welcomes %2$s'), $r[0]['username'] , $r[0]['name']) . EOL);
537 // Visitors get 1 day session.
538 $session_id = session_id();
539 $expire = time() + 86400;
540 q("UPDATE `session` SET `expire` = '%s' WHERE `sid` = '%s'",
554 header("Content-type: text/xml");
555 echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
556 . '<dfrn_poll>' . "\r\n"
557 . "\t" . '<status>' . $status . '</status>' . "\r\n"
558 . "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
559 . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
560 . "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
561 . '</dfrn_poll>' . "\r\n" ;