require_once('include/salmon.php');
-require_once('include/certfns.php');
+require_once('include/crypto.php');
+require_once('include/diaspora.php');
-function receive_return($val) {
- if($val >= 400)
- $err = 'Error';
- if($val >= 200 && $val < 300)
- $err = 'OK';
-
- logger('mod-diaspora returns ' . $val);
- header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
- killme();
-
-}
-
-
-function get_diaspora_key($uri) {
- $key = '';
-
- logger('Fetching diaspora key for: ' . $uri);
-
- $arr = lrdd($uri);
-
- if(is_array($arr)) {
- foreach($arr as $a) {
- if($a['@attributes']['rel'] === 'diaspora-public-key') {
- $key = base64_decode($a['@attributes']['href']);
- }
- }
- }
- else {
- return '';
- }
-
- if($key)
- return rsatopem($key);
- return '';
-}
-
function receive_post(&$a) {
- if($a->argc != 3 || $a->argv[1] !== 'users')
- receive_return(500);
-
- $guid = $a->argv[2];
-
- $r = q("SELECT * FROM `user` WHERE `guid` = '%s' LIMIT 1",
- dbesc($guid)
- );
- if(! count($r))
- salmon_return(500);
-
- $importer = $r[0];
-
- $xml = $_POST['xml'];
-
- logger('mod-diaspora: new salmon ' . $xml, LOGGER_DATA);
-
- if(! $xml)
- receive_return(500);
-
-
- $basedom = parse_xml_string($xml);
-
- if($basedom)
- logger('parsed dom');
-
- $atom = $basedom->children(NAMESPACE_ATOM1);
-
- logger('atom: ' . count($atom));
- $encrypted_header = json_decode(base64_decode($atom->encrypted_header));
-
- print_r($encrypted_header);
-
- $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
- $ciphertext = base64_decode($encrypted_header->ciphertext);
-
- logger('encrypted_aes: ' . print_r($encrypted_aes_key_bundle,true));
- logger('ciphertext: ' . print_r($ciphertext,true));
-
- $outer_key_bundle = '';
- openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$localprvkey);
-
- logger('outer_bundle: ' . print_r($outer_key_bundle,true));
-
- $j_outer_key_bundle = json_decode($outer_key_bundle);
-
- $outer_iv = base64_decode($j_outer_key_bundle->iv);
- $outer_key = base64_decode($j_outer_key_bundle->key);
-
- $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
-
- $decrypted = pkcs5_unpad($decrypted);
-
- logger('decrypted: ' . print_r($decrypted,true));
-
- /**
- * $decrypted now contains something like
- *
- * <decrypted_header>
- * <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
- * <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
- * <author>
- * <name>Ryan Hughes</name>
- * <uri>acct:galaxor@diaspora.pirateship.org</uri>
- * </author>
- * </decrypted_header>
- */
-
- $idom = parse_xml_string($decrypted,false);
-
- $inner_iv = base64_decode($idom->iv);
- $inner_aes_key = base64_decode($idom->aes_key);
-
- logger('inner_iv: ' . $inner_iv);
- $dom = $basedom->children(NAMESPACE_SALMON_ME);
-
- if($dom)
- logger('have dom');
-
- logger('dom: ' . count($dom));
- // figure out where in the DOM tree our data is hiding
-
- if($dom->provenance->data)
- $base = $dom->provenance;
- elseif($dom->env->data)
- $base = $dom->env;
- elseif($dom->data)
- $base = $dom;
-
- if(! $base) {
- logger('mod-diaspora: unable to locate salmon data in xml ');
- dt_return(400);
- }
-
-
- // Stash the signature away for now. We have to find their key or it won't be good for anything.
- $signature = base64url_decode($base->sig);
-
- logger('signature: ' . bin2hex($signature));
-
- // unpack the data
-
- // strip whitespace so our data element will return to one big base64 blob
- $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
- // Add back the 60 char linefeeds
- $lines = str_split($data,60);
- $data = implode("\n",$lines);
-
-
- // stash away some other stuff for later
-
- $type = $base->data[0]->attributes()->type[0];
- $keyhash = $base->sig[0]->attributes()->keyhash[0];
- $encoding = $base->encoding;
- $alg = $base->alg;
-
- $signed_data = $data . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
-
- logger('signed data: ' . $signed_data);
-
- // decode the data
- $data = base64url_decode($data);
-
- // Now pull out the inner encrypted blob
-
- $inner_encrypted = base64_decode($data);
-
- $inner_decrypted =
- $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
-
- $inner_decrypted = pkcs5_unpad($inner_decrypted);
-
- logger('inner_decrypted: ' . $inner_decrypted);
-
-
-
- if(! $author_link) {
- logger('mod-diaspora: Could not retrieve author URI.');
- receive_return(400);
- }
-
- // Once we have the author URI, go to the web and try to find their public key
- // *** or look it up locally ***
-
- logger('mod-diaspora: Fetching key for ' . $author_link );
-
- // Get diaspora public key (pkcs#1) and convert to pkcs#8
- $key = get_diaspora_key($author_link);
-
- if(! $key) {
- logger('mod-salmon: Could not retrieve author key.');
- receive_return(400);
+ $enabled = intval(get_config('system','diaspora_enabled'));
+ if(! $enabled) {
+ logger('mod-diaspora: disabled');
+ http_status_exit(500);
}
- $verify = false;
+ $public = false;
- if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
- $verify = openssl_verify($signed_data,$signature,$key,'sha256');
+ if(($a->argc == 2) && ($a->argv[1] === 'public')) {
+ $public = true;
}
else {
- // fallback sha256 verify for PHP < 5.3
- $rawsig = '';
- $hash = hash('sha256',$signed_data,true);
- openssl_public_decrypt($signature,$rawsig,$key);
- $verify = (($rawsig && substr($rawsig,-32) === $hash) ? true : false);
- }
- if(! $verify) {
- logger('mod-diaspora: Message did not verify. Discarding.');
- receive_return(400);
- }
-
- logger('mod-diaspora: Message verified.');
-
- // If we reached this point, the message is good.
- // Now let's figure out if the author is allowed to send us stuff.
+ if($a->argc != 3 || $a->argv[1] !== 'users')
+ http_status_exit(500);
- $r = q("SELECT * FROM `contact` WHERE `network` = 'dspr' AND ( `url` = '%s' OR `alias` = '%s')
- AND `uid` = %d LIMIT 1",
- dbesc($author_link),
- dbesc($author_link),
- intval($importer['uid'])
- );
- if(! count($r)) {
- logger('mod-diaspora: Author unknown to us.');
- }
+ $guid = $a->argv[2];
- // is this a follower? Or have we ignored the person?
- // If so we can not accept this post.
+ $r = q("SELECT * FROM `user` WHERE `guid` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
+ dbesc($guid)
+ );
+ if(! count($r))
+ http_status_exit(500);
- if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
- logger('mod-diaspora: Ignoring this author.');
- receive_return(202);
- // NOTREACHED
+ $importer = $r[0];
}
- require_once('include/items.php');
+ // It is an application/x-www-form-urlencoded
- // Placeholder for hub discovery. We shouldn't find any hubs
- // since we supplied the fake feed header - and it doesn't have any.
+ logger('mod-diaspora: receiving post', LOGGER_DEBUG);
- $hub = '';
+ $xml = urldecode($_POST['xml']);
- /**
- *
- * anti-spam measure: consume_feed will accept a follow activity from
- * this person (and nothing else) if there is no existing contact record.
- *
- */
-
- $contact_rec = ((count($r)) ? $r[0] : null);
+ logger('mod-diaspora: new salmon ' . $xml, LOGGER_DATA);
+ if(! $xml)
+ http_status_exit(500);
+ logger('mod-diaspora: message is okay', LOGGER_DEBUG);
+ $msg = diaspora_decode($importer,$xml);
-// figure out what kind of diaspora message we have, and process accordingly.
+ logger('mod-diaspora: decoded', LOGGER_DEBUG);
+ logger('mod-diaspora: decoded msg: ' . print_r($msg,true), LOGGER_DATA);
+ if(! is_array($msg))
+ http_status_exit(500);
+ logger('mod-diaspora: dispatching', LOGGER_DEBUG);
+ $ret = 0;
+ if($public)
+ diaspora_dispatch_public($msg);
+ else
+ $ret = diaspora_dispatch($importer,$msg);
- receive_return(200);
+ http_status_exit(($ret) ? $ret : 200);
+ // NOTREACHED
}
-
-
-
projects / friendica.git / blobdiff