X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=mod%2Fsalmon.php;h=d5b0fe243036b3d0dc41484af647371a61ff17da;hb=6ef2fd56f78b3bfe1df59bbd35bd9fdb547b3291;hp=8c7d921c86041328549b7e299647f2aa59775937;hpb=13fa27f7578d292d8d722554ce6211e8e0bc91af;p=friendica.git diff --git a/mod/salmon.php b/mod/salmon.php index 8c7d921c86..d5b0fe2430 100644 --- a/mod/salmon.php +++ b/mod/salmon.php @@ -1,14 +1,16 @@ = 200 && $val < 300) $err = 'OK'; - logger('mod-salmon returns ' . $val); + logger('mod-salmon returns ' . $val); header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err); killme(); } -function salmon_post(&$a) { +function salmon_post(App $a) { $xml = file_get_contents('php://input'); - logger('mod-salmon: new salmon ' . $xml); + logger('mod-salmon: new salmon ' . $xml, LOGGER_DATA); $nick = (($a->argc > 1) ? notags(trim($a->argv[1])) : ''); $mentions = (($a->argc > 2 && $a->argv[2] === 'mention') ? true : false); - $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1", + $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1", dbesc($nick) ); - if(! count($r)) - salmon_return(500); + if (! DBM::is_result($r)) { + http_status_exit(500); + } $importer = $r[0]; @@ -52,10 +55,10 @@ function salmon_post(&$a) { $base = $dom->env; elseif($dom->data) $base = $dom; - + if(! $base) { logger('mod-salmon: unable to locate salmon data in xml '); - salmon_return(400); + http_status_exit(400); } // Stash the signature away for now. We have to find their key or it won't be good for anything. @@ -66,7 +69,7 @@ function salmon_post(&$a) { // 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); + $data = str_replace([" ","\t","\r","\n"],["","","",""],$base->data); // stash away some other stuff for later @@ -75,100 +78,71 @@ function salmon_post(&$a) { $encoding = $base->encoding; $alg = $base->alg; - // If we're talking to status.net or one of their ilk, they aren't following the magic envelope spec - // and only signed the data element. We'll be nice and let them validate anyway. + // Salmon magic signatures have evolved and there is no way of knowing ahead of time which + // flavour we have. We'll try and verify it regardless. $stnet_signed_data = $data; - $signed_data = $data . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg); - - // decode the data - $data = base64url_decode($data); - // Remove the xml declaration - $data = preg_replace('/\<\?xml[^\?].*\?\>/','',$data); - - // Create a fake feed wrapper so simplepie doesn't choke - - $tpl = load_view_file('view/fake_feed.tpl'); - - $base = substr($data,strpos($data,''; + $signed_data = $data . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg); - logger('mod-salmon: Processed feed: ' . $feedxml); + $compliant_format = str_replace('=', '', $signed_data); - // 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-salmon: Feed parsed.'); + // decode the data + $data = base64url_decode($data); - if($feed->get_item_quantity()) { - foreach($feed->get_items() as $item) { - $author = $item->get_author(); - $author_link = unxmlify($author->get_link()); - break; - } - } + $author = OStatus::salmonAuthor($data, $importer); + $author_link = $author["author-link"]; if(! $author_link) { logger('mod-salmon: Could not retrieve author URI.'); - salmon_return(400); + http_status_exit(400); } // 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 ); - + logger('mod-salmon: Fetching key for ' . $author_link); - $key = get_salmon_key($author_link,$keyhash); + $key = Salmon::getKey($author_link, $keyhash); if(! $key) { logger('mod-salmon: Could not retrieve author key.'); - salmon_return(400); + http_status_exit(400); } - // Setup RSA stuff to verify the signature - - set_include_path(get_include_path() . PATH_SEPARATOR . 'phpsec'); - - require_once('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($key_info,true)); + logger('mod-salmon: key details: ' . print_r($key_info,true), LOGGER_DEBUG); - $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); + $pubkey = Crypto::meToPem($m, $e); // We should have everything we need now. Let's see if it verifies. - // If it fails with the proper data format, try again using just the data - // (e.g. status.net) - $verify = $rsa->verify($signed_data,$signature); + // Try GNU Social format + $verify = Crypto::rsaVerify($signed_data, $signature, $pubkey); + $mode = 1; + + if (! $verify) { + logger('mod-salmon: message did not verify using protocol. Trying compliant format.'); + $verify = Crypto::rsaVerify($compliant_format, $signature, $pubkey); + $mode = 2; + } - if(! $verify) { - logger('mod-salmon: message did not verify using protocol. Trying statusnet hack.'); - $verify = $rsa->verify($stnet_signed_data,$signature); - } + if (! $verify) { + logger('mod-salmon: message did not verify using padding. Trying old statusnet format.'); + $verify = Crypto::rsaVerify($stnet_signed_data, $signature, $pubkey); + $mode = 3; + } - if(! $verify) { + if (! $verify) { logger('mod-salmon: Message did not verify. Discarding.'); - salmon_return(400); + http_status_exit(400); } - logger('mod-salmon: Message verified.'); + logger('mod-salmon: Message verified with mode '.$mode); /* @@ -177,42 +151,48 @@ function salmon_post(&$a) { * */ - $r = q("SELECT * FROM `contact` WHERE `network` = 'stat' AND ( `url` = '%s' OR `lrdd` = '%s') - AND `uid` = %d LIMIT 1", - dbesc($author_link), + $r = q("SELECT * FROM `contact` WHERE `network` IN ('%s', '%s') + AND (`nurl` = '%s' OR `alias` = '%s' OR `alias` = '%s') + AND `uid` = %d LIMIT 1", + dbesc(NETWORK_OSTATUS), + dbesc(NETWORK_DFRN), + dbesc(normalise_link($author_link)), dbesc($author_link), + dbesc(normalise_link($author_link)), intval($importer['uid']) ); - if(! count($r)) { + if (! DBM::is_result($r)) { logger('mod-salmon: Author unknown to us.'); - } - if((count($r)) && ($r[0]['readonly'])) { - logger('mod-salmon: Ignoring this author.'); - salmon_return(202); - // NOTREACHED + if(PConfig::get($importer['uid'],'system','ostatus_autofriend')) { + $result = Contact::createFromProbe($importer['uid'], $author_link); + if($result['success']) { + $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND ( `url` = '%s' OR `alias` = '%s') + AND `uid` = %d LIMIT 1", + dbesc(NETWORK_OSTATUS), + dbesc($author_link), + dbesc($author_link), + intval($importer['uid']) + ); + } + } } - require_once('include/items.php'); + // Have we ignored the person? + // If so we can not accept this post. - // Placeholder for hub discovery. We shouldn't find any hubs - // since we supplied the fake feed header - and it doesn't have any. + //if((DBM::is_result($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) { + if (DBM::is_result($r) && $r[0]['blocked']) { + logger('mod-salmon: Ignoring this author.'); + http_status_exit(202); + // NOTREACHED + } + // Placeholder for hub discovery. $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); + $contact_rec = ((DBM::is_result($r)) ? $r[0] : null); - consume_feed($feedxml,$importer,$contact_rec,$hub); + OStatus::import($data, $importer, $contact_rec, $hub); - salmon_return(200); + http_status_exit(200); } - - - -