<?php
-require_once('simplepie/simplepie.inc');
+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 get_atom_elements($item) {
-
- $res = array();
-
- $author = $item->get_author();
- $res['remote-name'] = $author->get_name();
- $res['remote-link'] = $author->get_link();
- $res['remote-avatar'] = $author->get_avatar();
- $res['remote-id'] = $item->get_id();
- $res['title'] = $item->get_title();
- $res['body'] = $item->get_content();
-
- if(strlen($res['body']) > 100000)
- $res['body'] = substr($res['body'],0,10000) . "\r\n[Extremely large post truncated.]\r\n" ;
-
- $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
- if($allow && $allow[0]['data'] == 1)
- $res['last-child'] = 1;
- else
- $res['last-child'] = 0;
-
- $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
- if($rawcreated)
- $res['created'] = $rawcreated[0]['data'];
-
- $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
- if($rawedited)
- $res['edited'] = $rawcreated[0]['data'];
-
- $rawowner = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0', 'owner');
- if($rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['name'][0]['data'])
- $res['owner-name'] = $rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['name'][0]['data'];
- if($rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['uri'][0]['data'])
- $res['owner-link'] = $rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['uri'][0]['data'];
- if($rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]['data'])
- $res['owner-avatar'] = $rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]['data'];
-
-
- return $res;
-
-}
-
-function post_remote($arr) {
-
- $arr['hash'] = random_string();
- $arr['type'] = 'remote';
- $arr['remote-name'] = notags(trim($arr['remote-name']));
- $arr['remote-link'] = notags(trim($arr['remote-link']));
- $arr['remote-avatar'] = notags(trim($arr['remote-avatar']));
- $arr['owner-name'] = notags(trim($arr['owner-name']));
- $arr['owner-link'] = notags(trim($arr['owner-link']));
- $arr['owner-avatar'] = notags(trim($arr['owner-avatar']));
-// must pass $a
-// if(! strlen($arr['remote-avatar']))
-// $arr['remote-avatar'] = $a->get_baseurl() . '/images/default-profile-sm.jpg';
-// if(! strlen($arr['owner-avatar']))
-// $arr['owner-avatar'] = $a->get_baseurl() . '/images/default-profile-sm.jpg';
- $arr['created'] = datetime_convert('UTC','UTC',$arr['created'],'Y-m-d H:i:s');
- $arr['edited'] = datetime_convert('UTC','UTC',$arr['edited'],'Y-m-d H:i:s');
- $arr['title'] = notags(trim($arr['title']));
- $arr['body'] = escape_tags(trim($arr['body']));
- $arr['last-child'] = intval($arr['last-child']);
- $arr['visible'] = 1;
- $arr['deleted'] = 0;
-
- $parent = $arr['parent_urn'];
-
- unset($arr['parent_urn']);
-
- $parent_id = 0;
-
- dbesc_array($arr);
-
- $r = q("INSERT INTO `item` (`"
- . implode("`, `", array_keys($arr))
- . "`) VALUES ('"
- . implode("', '", array_values($arr))
- . "')" );
-
-
- $r = q("SELECT `id` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
- dbesc($parent),
- intval($arr['uid'])
- );
- if(count($r))
- $parent_id = $r[0]['id'];
-
-
- $r = q("SELECT `id` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
- $arr['remote-id'],
- intval($arr['uid'])
- );
- if(count($r))
- $current_post = $r[0]['id'];
-
- $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d LIMIT 1",
- intval($parent_id),
- intval($current_post)
- );
+function dfrn_notify_post(&$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');
+ $page = ((x($_POST,'page')) ? intval($_POST['page']) : 0);
+
+ $forum = (($page == 1) ? 1 : 0);
+ $prv = (($page == 2) ? 1 : 0);
+
+ $writable = (-1);
+ if($dfrn_version >= 2.21) {
+ $writable = (($perm === 'rw') ? 1 : 0);
+ }
-}
+ $direction = (-1);
+ if(strpos($dfrn_id,':') == 1) {
+ $direction = intval(substr($dfrn_id,0,1));
+ $dfrn_id = substr($dfrn_id,2);
+ }
-function dfrn_notify_post(&$a) {
-dbg(3);
- $dfrn_id = notags(trim($_POST['dfrn_id']));
- $challenge = notags(trim($_POST['challenge']));
- $data = $_POST['data'];
$r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
dbesc($dfrn_id),
dbesc($challenge)
);
- if(! count($r))
+ if(! count($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)
);
// find the local user who owns this relationship.
- $r = q("SELECT `id`, `uid` FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
- dbesc($dfrn_id)
+ $sql_extra = '';
+ switch($direction) {
+ case (-1):
+ $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
+ break;
+ case 0:
+ $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ break;
+ case 1:
+ $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ break;
+ default:
+ 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`,
+ `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
+ AND `user`.`nickname` = '%s' AND `user`.`account_expired` = 0 AND `user`.`account_removed` = 0 $sql_extra LIMIT 1",
+ dbesc($a->argv[1])
);
- if(! count($r))
+
+ if(! count($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 = $r[0];
- $feed = new SimplePie();
- $feed->set_raw_data($data);
- $feed->enable_order_by_date(false);
- $feed->init();
+ logger("Remote rino version: ".$rino_remote." for ".$importer["url"], LOGGER_DEBUG);
- foreach($feed->get_items() as $item) {
+ if((($writable != (-1)) && ($writable != $importer['writable'])) || ($importer['forum'] != $forum) || ($importer['prv'] != $prv)) {
+ q("UPDATE `contact` SET `writable` = %d, forum = %d, prv = %d WHERE `id` = %d",
+ intval(($writable == (-1)) ? $importer['writable'] : $writable),
+ intval($forum),
+ intval($prv),
+ intval($importer['id'])
+ );
+ if($writable != (-1))
+ $importer['writable'] = $writable;
+ $importer['forum'] = $page;
+ }
- $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
- print_r($rawdelete);
- if($deleted) {
- // pick out ref and when from attribs
- // check hasn't happened already, verify ownership and then process it
+ // if contact's ssl policy changed, update our links
- continue;
- }
+ fix_contact_ssl_policy($importer,$ssl_policy);
+
+ logger('dfrn_notify: received notify from ' . $importer['name'] . ' for ' . $importer['username']);
+ logger('dfrn_notify: data: ' . $data, LOGGER_DATA);
+
+ if($dissolve == 1) {
+
+ /**
+ * Relationship is dissolved permanently
+ */
+
+ 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);
+
+ $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);
- $is_reply = false;
- $item_id = $item->get_id();
- $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
- if(isset($rawthread[0]['attribs']['']['ref'])) {
- $is_reply = true;
- $parent_urn = $rawthread[0]['attribs']['']['ref'];
+ if(strlen($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));
+ $final_key = '';
- if($is_reply) {
- if($x == ($total_items - 1)) {
- // remote reply to our post. Import and then notify everybody else.
+ if($dfrn_version >= 2.1) {
+ if((($importer['duplex']) && strlen($importer['cprvkey'])) || (! strlen($importer['cpubkey']))) {
+ openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
}
else {
- // regular comment that is part of this total conversation. Have we seen it? If not, import it.
-
- $item_id = $item->get_id();
-
- $r = q("SELECT `uid`, `last-child` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
- dbesc($item_id),
- intval($importer['uid'])
- );
- if(count($r)) {
- $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
- if($allow && $allow[0]['data'] != $r[0]['last-child']) {
- $r = q("UPDATE `item` SET `last-child` = %d WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
- intval($allow[0]['data']),
- dbesc($item_id)
- );
- }
- continue;
- }
- $datarray = get_atom_elements($item);
- $datarray['parent_urn'] = $parent_urn;
- $datarray['uid'] = $importer['uid'];
- $datarray['contact-id'] = $importer['id'];
- $r = post_remote($datarray);
- continue;
+ openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
}
}
else {
- // Head post of a conversation. Have we seen it? If not, import it.
-
- $item_id = $item->get_id();
- $r = q("SELECT `uid` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
- dbesc($item_id),
- intval($importer['uid'])
- );
- if(count($r)) {
- $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
- if($allow && $allow[0]['data'] != $r[0]['last-child']) {
- $r = q("UPDATE `item` SET `last-child` = %d WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
- intval($allow[0]['data']),
- dbesc($item_id)
- );
- }
- continue;
+ if((($importer['duplex']) && strlen($importer['cpubkey'])) || (! strlen($importer['cprvkey']))) {
+ openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
+ }
+ else {
+ openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
}
+ }
+ #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);
+ }
- $datarray = get_atom_elements($item);
- $datarray['parent_urn'] = $item_id;
- $datarray['uid'] = $importer['uid'];
- $datarray['contact-id'] = $importer['id'];
- $r = post_remote($datarray);
- continue;
- }
-
+ logger('rino: decrypted data: ' . $data, LOGGER_DATA);
}
+ $ret = dfrn::import($data, $importer);
+ xml_status($ret);
- killme();
-
+ // NOTREACHED
}
+function dfrn_notify_content(&$a) {
+ if(x($_GET,'dfrn_id')) {
+ // initial communication from external contact, $direction is their direction.
+ // If this is a duplex communication, ours will be the opposite.
+ $dfrn_id = notags(trim($_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);
+ $direction = (-1);
+ if(strpos($dfrn_id,':') == 1) {
+ $direction = intval(substr($dfrn_id,0,1));
+ $dfrn_id = substr($dfrn_id,2);
+ }
-
-
-function dfrn_notify_content(&$a) {
-
- if(x($_GET,'dfrn_id')) {
- // initial communication from external contact
$hash = random_string();
$status = 0;
$r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
- $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
- VALUES( '%s', '%s', '%s') ",
+ $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
+ VALUES( '%s', '%s', %d, '%s', '%s' ) ",
dbesc($hash),
- dbesc(notags(trim($_GET['dfrn_id']))),
- intval(time() + 60 )
+ dbesc($dfrn_id),
+ intval(time() + 90 ),
+ dbesc($type),
+ dbesc($last_update)
+ );
+
+ logger('dfrn_notify: challenge=' . $hash, LOGGER_DEBUG);
+
+ $sql_extra = '';
+ switch($direction) {
+ case (-1):
+ $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
+ $my_id = $dfrn_id;
+ break;
+ case 0:
+ $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ $my_id = '1:' . $dfrn_id;
+ break;
+ case 1:
+ $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ $my_id = '0:' . $dfrn_id;
+ break;
+ default:
+ $status = 1;
+ 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'
+ AND `user`.`account_expired` = 0 AND `user`.`account_removed` = 0 $sql_extra LIMIT 1",
+ dbesc($a->argv[1])
);
- $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 LIMIT 1",
- dbesc($_GET['dfrn_id']));
- if((! count($r)) || (! strlen($r[0]['prvkey'])))
+ if(! count($r))
$status = 1;
+ logger("Remote rino version: ".$rino_remote." for ".$r[0]["url"], LOGGER_DEBUG);
+
$challenge = '';
+ $encrypted_id = '';
+ $id_str = $my_id . '.' . mt_rand(1000,9999);
+
+ $prv_key = trim($r[0]['prvkey']);
+ $pub_key = trim($r[0]['pubkey']);
+ $dplx = intval($r[0]['duplex']);
+
+ if((($dplx) && (strlen($prv_key))) || ((strlen($prv_key)) && (!(strlen($pub_key))))) {
+ openssl_private_encrypt($hash,$challenge,$prv_key);
+ openssl_private_encrypt($id_str,$encrypted_id,$prv_key);
+ }
+ elseif(strlen($pub_key)) {
+ openssl_public_encrypt($hash,$challenge,$pub_key);
+ openssl_public_encrypt($id_str,$encrypted_id,$pub_key);
+ }
+ else
+ $status = 1;
+
+ $challenge = bin2hex($challenge);
+ $encrypted_id = bin2hex($encrypted_id);
+
- openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
- $challenge = bin2hex($challenge);
- echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $_GET['dfrn_id'] . '</dfrn_id>'
- . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
- session_write_close();
- exit;
-
+ $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: ". $rino, LOGGER_DEBUG);
+
+ // if requested rino is lower than enabled local rino, lower local rino version
+ // if requested rino is higher than enabled local rino, reply with local rino
+ if ($rino_remote < $rino) $rino = $rino_remote;
+
+ if((($r[0]['rel']) && ($r[0]['rel'] != CONTACT_IS_SHARING)) || ($r[0]['page-flags'] == PAGE_COMMUNITY)) {
+ $perm = 'rw';
+ }
+ else {
+ $perm = 'r';
+ }
+
+ header("Content-type: text/xml");
+
+ 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" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
+ . '</dfrn_notify>' . "\r\n" ;
+
+ killme();
}
-}
\ No newline at end of file
+}