diff options
Diffstat (limited to 'mod/receive.php')
| -rw-r--r-- | mod/receive.php | 203 |
1 files changed, 30 insertions, 173 deletions
diff --git a/mod/receive.php b/mod/receive.php index 6fb68e154..19c163967 100644 --- a/mod/receive.php +++ b/mod/receive.php @@ -6,25 +6,14 @@ require_once('include/salmon.php'); -require_once('library/simplepie/simplepie.inc'); - -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 . ' ' . $err); - killme(); - -} +require_once('include/crypto.php'); +require_once('include/diaspora.php'); + function receive_post(&$a) { if($a->argc != 3 || $a->argv[1] !== 'users') - receive_return(500); + http_status_exit(500); $guid = $a->argv[2]; @@ -32,183 +21,51 @@ function receive_post(&$a) { dbesc($guid) ); if(! count($r)) - salmon_return(500); + http_status_exit(500); $importer = $r[0]; - $xml = $_POST['xml']; + // It is an application/x-www-form-urlencoded + + $xml = urldecode($_POST['xml']); logger('mod-diaspora: new salmon ' . $xml, LOGGER_DATA); if(! $xml) - receive_return(500); - - // parse the xml - - $dom = simplexml_load_string($xml,'SimpleXMLElement',0,NAMESPACE_SALMON_ME); - - // 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 '); - receive_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); + http_status_exit(500); - // unpack the data + $msg = diaspora_decode($importer,$xml); - // strip whitespace so our data element will return to one big base64 blob - $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data); + logger('mod-diaspora: decoded msg: ' . print_r($msg,true), LOGGER_DATA); - // stash away some other stuff for later + if(! is_array($msg)) + http_status_exit(500); - $type = $base->data[0]->attributes()->type[0]; - $keyhash = $base->sig[0]->attributes()->keyhash[0]; - $encoding = $base->encoding; - $alg = $base->alg; - $signed_data = $data . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg); + $parsed_xml = parse_xml_string($msg['message'],false); - // decode the data - $data = base64url_decode($data); + $xmlbase = $parsed_xml->post; - // Remove the xml declaration - $data = preg_replace('/\<\?xml[^\?].*\?\>/','',$data); - - // Create a fake feed wrapper so simplepie doesn't choke - - $tpl = get_markup_template('fake_feed.tpl'); - - $base = substr($data,strpos($data,'<entry')); - - $feedxml = $tpl . $base . '</feed>'; - - logger('mod-diaspora: Processed feed: ' . $feedxml); - - // Now parse it like a normal atom feed to scrape out the author URI - - $feed = new SimplePie(); - $feed->set_raw_data($feedxml); - $feed->enable_order_by_date(false); - $feed->init(); - - logger('mod-diaspora: Feed parsed.'); - - if($feed->get_item_quantity()) { - foreach($feed->get_items() as $item) { - $author = $item->get_author(); - $author_link = unxmlify($author->get_link()); - break; - } + if($xmlbase->request) { + diaspora_request($importer,$xmlbase->request); } - - if(! $author_link) { - logger('mod-diaspora: Could not retrieve author URI.'); - receive_return(400); + elseif($xmlbase->status_message) { + diaspora_post($importer,$xmlbase->status_message); } - - // Once we have the author URI, go to the web and try to find their public key - - logger('mod-salmon: Fetching key for ' . $author_link ); - - - $key = get_salmon_key($author_link,$keyhash); - - if(! $key) { - logger('mod-salmon: Could not retrieve author key.'); - receive_return(400); + elseif($xmlbase->comment) { + diaspora_comment($importer,$xmlbase->comment,$msg); } - - // Setup RSA stuff to verify the signature - - set_include_path(get_include_path() . PATH_SEPARATOR . 'library' . PATH_SEPARATOR . 'phpsec'); - - require_once('library/phpsec/Crypt/RSA.php'); - - $key_info = explode('.',$key); - - $m = base64url_decode($key_info[1]); - $e = base64url_decode($key_info[2]); - - logger('mod-salmon: key details: ' . print_r($key_info,true)); - - $rsa = new CRYPT_RSA(); - $rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1; - $rsa->setHash('sha256'); - - $rsa->modulus = new Math_BigInteger($m, 256); - $rsa->k = strlen($rsa->modulus->toBytes()); - $rsa->exponent = new Math_BigInteger($e, 256); - - $verify = $rsa->verify($signed_data,$signature); - - if(! $verify) { - logger('mod-diaspora: Message did not verify. Discarding.'); - receive_return(400); + elseif($xmlbase->like) { + diaspora_like($importer,$xmlbase->like,$msg); } - - logger('mod-diaspora: Message verified.'); - - /* decrypt the sucker */ - /* - // TODO - */ - - /* - * - * If we reached this point, the message is good. Now let's figure out if the author is allowed to send us stuff. - * - */ - - $r = q("SELECT * FROM `contact` WHERE `network` = 'dspr' AND ( `url` = '%s' OR `alias` = '%s') - AND `uid` = %d LIMIT 1", - dbesc($author_link), - dbesc($author_link), - intval($importer['uid']) - ); - if(! count($r)) { - logger('mod-diaspora: Author unknown to us.'); - } - - // is this a follower? Or have we ignored the person? - // If so we can not accept this post. - - if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == REL_VIP) || ($r[0]['blocked']))) { - logger('mod-diaspora: Ignoring this author.'); - receive_return(202); - // NOTREACHED + elseif($xmlbase->retraction) { + diaspora_retraction($importer,$xmlbase->retraction,$msg); + } + else { + logger('mod-diaspora: unknown message type: ' . print_r($xmlbase,true)); } - require_once('include/items.php'); - - // Placeholder for hub discovery. We shouldn't find any hubs - // since we supplied the fake feed header - and it doesn't have any. - - $hub = ''; - - /** - * - * 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)) ? $r[0] : null); - - consume_feed($feedxml,$importer,$contact_rec,$hub); - - receive_return(200); + http_status_exit(200); + // NOTREACHED } - - - |