<?php
-require_once('library/simplepie/simplepie.inc');
+/**
+ * @file mod/dfrn_notify.php
+ * @brief The dfrn notify endpoint
+ * @see PDF with dfrn specs: https://github.com/friendica/friendica/blob/master/spec/dfrn2.pdf
+ */
require_once('include/items.php');
+require_once('include/dfrn.php');
require_once('include/event.php');
+require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
-function dfrn_notify_post(&$a) {
- logger(__function__, LOGGER_TRACE);
+function dfrn_notify_post(App &$a) {
+ logger(__function__, LOGGER_TRACE);
$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : '');
$dfrn_version = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version'] : 2.0);
$challenge = ((x($_POST,'challenge')) ? notags(trim($_POST['challenge'])) : '');
$data = ((x($_POST,'data')) ? $_POST['data'] : '');
$key = ((x($_POST,'key')) ? $_POST['key'] : '');
+ $rino_remote = ((x($_POST,'rino')) ? intval($_POST['rino']) : 0);
$dissolve = ((x($_POST,'dissolve')) ? intval($_POST['dissolve']) : 0);
$perm = ((x($_POST,'perm')) ? notags(trim($_POST['perm'])) : 'r');
$ssl_policy = ((x($_POST,'ssl_policy')) ? notags(trim($_POST['ssl_policy'])): 'none');
dbesc($dfrn_id),
dbesc($challenge)
);
- if(! count($r)) {
+ if (! dbm::is_result($r)) {
logger('dfrn_notify: could not match challenge to dfrn_id ' . $dfrn_id . ' challenge=' . $challenge);
xml_status(3);
}
- $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
+ $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s'",
dbesc($dfrn_id),
dbesc($challenge)
);
xml_status(3);
break; // NOTREACHED
}
-
+
// be careful - $importer will contain both the contact information for the contact
// sending us the post, and also the user information for the person receiving it.
// since they are mixed together, it is easy to get them confused.
- $r = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`,
- `contact`.`pubkey` AS `cpubkey`,
- `contact`.`prvkey` AS `cprvkey`,
- `contact`.`thumb` AS `thumb`,
+ $r = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`,
+ `contact`.`pubkey` AS `cpubkey`,
+ `contact`.`prvkey` AS `cprvkey`,
+ `contact`.`thumb` AS `thumb`,
`contact`.`url` as `url`,
`contact`.`name` as `senderName`,
- `user`.*
- FROM `contact`
- LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
- WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
+ `user`.*
+ FROM `contact`
+ LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
+ WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
AND `user`.`nickname` = '%s' AND `user`.`account_expired` = 0 AND `user`.`account_removed` = 0 $sql_extra LIMIT 1",
dbesc($a->argv[1])
);
- if(! count($r)) {
+ if (! dbm::is_result($r)) {
logger('dfrn_notify: contact not found for dfrn_id ' . $dfrn_id);
xml_status(3);
//NOTREACHED
}
- // $importer in this case contains the contact record for the remote contact joined with the user record of our user.
+ // $importer in this case contains the contact record for the remote contact joined with the user record of our user.
$importer = $r[0];
+ logger("Remote rino version: ".$rino_remote." for ".$importer["url"], LOGGER_DEBUG);
+
if((($writable != (-1)) && ($writable != $importer['writable'])) || ($importer['forum'] != $forum) || ($importer['prv'] != $prv)) {
- q("UPDATE `contact` SET `writable` = %d, forum = %d, prv = %d WHERE `id` = %d LIMIT 1",
+ q("UPDATE `contact` SET `writable` = %d, forum = %d, prv = %d WHERE `id` = %d",
intval(($writable == (-1)) ? $importer['writable'] : $writable),
intval($forum),
intval($prv),
if($dissolve == 1) {
- /**
+ /*
* Relationship is dissolved permanently
*/
- require_once('include/Contact.php');
+ require_once('include/Contact.php');
contact_remove($importer['id']);
logger('relationship dissolved : ' . $importer['name'] . ' dissolved ' . $importer['username']);
xml_status(0);
// If we are setup as a soapbox we aren't accepting input from this person
+ // This behaviour is deactivated since it really doesn't make sense to even disallow comments
+ // The check if someone is a friend or simply a follower is done in a later place so it needn't to be done here
+ //if($importer['page-flags'] == PAGE_SOAPBOX)
+ // xml_status(0);
- if($importer['page-flags'] == PAGE_SOAPBOX)
- xml_status(0);
+ $rino = get_config('system','rino_encrypt');
+ $rino = intval($rino);
+ // use RINO1 if mcrypt isn't installed and RINO2 was selected
+ if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
+ logger("Local rino version: ". $rino, LOGGER_DEBUG);
if(strlen($key)) {
+
+ // if local rino is lower than remote rino, abort: should not happen!
+ // but only for $remote_rino > 1, because old code did't send rino version
+ if ($rino_remote_version > 1 && $rino < $rino_remote) {
+ logger("rino version '$rino_remote' is lower than supported '$rino'");
+ xml_status(0,"rino version '$rino_remote' is lower than supported '$rino'");
+ }
+
$rawkey = hex2bin(trim($key));
logger('rino: md5 raw key: ' . md5($rawkey));
$final_key = '';
}
}
- logger('rino: received key : ' . $final_key);
- $data = aes_decrypt(hex2bin($data),$final_key);
+ #logger('rino: received key : ' . $final_key);
+
+ switch($rino_remote) {
+ case 0:
+ case 1:
+ // we got a key. old code send only the key, without RINO version.
+ // we assume RINO 1 if key and no RINO version
+ $data = aes_decrypt(hex2bin($data),$final_key);
+ break;
+ case 2:
+ try {
+ $data = Crypto::decrypt(hex2bin($data),$final_key);
+ } catch (InvalidCiphertext $ex) { // VERY IMPORTANT
+ // Either:
+ // 1. The ciphertext was modified by the attacker,
+ // 2. The key is wrong, or
+ // 3. $ciphertext is not a valid ciphertext or was corrupted.
+ // Assume the worst.
+ logger('The ciphertext has been tampered with!');
+ xml_status(0,'The ciphertext has been tampered with!');
+ } catch (Ex\CryptoTestFailed $ex) {
+ logger('Cannot safely perform dencryption');
+ xml_status(0,'CryptoTestFailed');
+ } catch (Ex\CannotPerformOperation $ex) {
+ logger('Cannot safely perform decryption');
+ xml_status(0,'Cannot safely perform decryption');
+ }
+ break;
+ default:
+ logger("rino: invalid sent verision '$rino_remote'");
+ xml_status(0);
+ }
+
+
logger('rino: decrypted data: ' . $data, LOGGER_DATA);
}
-
- $ret = local_delivery($importer,$data);
+ $ret = dfrn::import($data, $importer);
xml_status($ret);
// NOTREACHED
}
-function dfrn_notify_content(&$a) {
+function dfrn_notify_content(App &$a) {
if(x($_GET,'dfrn_id')) {
$dfrn_id = notags(trim($_GET['dfrn_id']));
$dfrn_version = (float) $_GET['dfrn_version'];
+ $rino_remote = ((x($_GET,'rino')) ? intval($_GET['rino']) : 0);
+ $type = "";
+ $last_update = "";
logger('dfrn_notify: new notification dfrn_id=' . $dfrn_id);
$r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
- $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
- VALUES( '%s', '%s', %d ) ",
+ $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
+ VALUES( '%s', '%s', %d, '%s', '%s' ) ",
dbesc($hash),
dbesc($dfrn_id),
- intval(time() + 90 )
+ intval(time() + 90 ),
+ dbesc($type),
+ dbesc($last_update)
);
- logger('dfrn_notify: challenge=' . $hash, LOGGER_DEBUG );
+ logger('dfrn_notify: challenge=' . $hash, LOGGER_DEBUG);
$sql_extra = '';
switch($direction) {
break; // NOTREACHED
}
- $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`page-flags` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
- WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s'
+ $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`page-flags` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
+ WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s'
AND `user`.`account_expired` = 0 AND `user`.`account_removed` = 0 $sql_extra LIMIT 1",
dbesc($a->argv[1])
);
- if(! count($r))
+ if (! dbm::is_result($r)) {
$status = 1;
+ }
+
+ logger("Remote rino version: ".$rino_remote." for ".$r[0]["url"], LOGGER_DEBUG);
$challenge = '';
$encrypted_id = '';
$challenge = bin2hex($challenge);
$encrypted_id = bin2hex($encrypted_id);
- $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
- $rino_enable = get_config('system','rino_encrypt');
+ $rino = get_config('system','rino_encrypt');
+ $rino = intval($rino);
+ // use RINO1 if mcrypt isn't installed and RINO2 was selected
+ if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
+
+ logger("Local rino version: ". $rino, LOGGER_DEBUG);
- if(! $rino_enable)
- $rino = 0;
+ // if requested rino is lower than enabled local rino, lower local rino version
+ // if requested rino is higher than enabled local rino, reply with local rino
+ if ($rino_remote < $rino) $rino = $rino_remote;
if((($r[0]['rel']) && ($r[0]['rel'] != CONTACT_IS_SHARING)) || ($r[0]['page-flags'] == PAGE_COMMUNITY)) {
$perm = 'rw';
header("Content-type: text/xml");
- echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
+ echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
. '<dfrn_notify>' . "\r\n"
. "\t" . '<status>' . $status . '</status>' . "\r\n"
. "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
. "\t" . '<rino>' . $rino . '</rino>' . "\r\n"
- . "\t" . '<perm>' . $perm . '</perm>' . "\r\n"
- . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
+ . "\t" . '<perm>' . $perm . '</perm>' . "\r\n"
+ . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
. "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
. '</dfrn_notify>' . "\r\n" ;