<?php
+/**
+ * @file mod/salmon.php
+ */
+use Friendica\App;
+use Friendica\Core\PConfig;
+use Friendica\Core\Protocol;
+use Friendica\Core\System;
+use Friendica\Database\DBA;
+use Friendica\Model\Contact;
+use Friendica\Protocol\OStatus;
+use Friendica\Protocol\Salmon;
+use Friendica\Util\Crypto;
+
+require_once 'include/items.php';
+
+function salmon_post(App $a, $xml = '') {
+
+ if (empty($xml)) {
+ $xml = file_get_contents('php://input');
+ }
-
-// There is a lot of debug stuff in here because this is quite a
-// complicated process to try and sort out.
-
-require_once('include/salmon.php');
-require_once('include/crypto.php');
-require_once('library/simplepie/simplepie.inc');
-
-function salmon_return($val) {
-
- if($val >= 400)
- $err = 'Error';
- if($val >= 200 && $val < 300)
- $err = 'OK';
-
- logger('mod-salmon returns ' . $val);
- header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
- killme();
-
-}
-
-function salmon_post(&$a) {
-
- $xml = file_get_contents('php://input');
-
- logger('mod-salmon: new salmon ' . $xml, LOGGER_DATA);
+ logger('new salmon ' . $xml, LOGGER_DATA);
$nick = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
$mentions = (($a->argc > 2 && $a->argv[2] === 'mention') ? true : false);
- $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 LIMIT 1",
- dbesc($nick)
+ $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
+ DBA::escape($nick)
);
- if(! count($r))
- http_status_exit(500);
+ if (! DBA::isResult($r)) {
+ System::httpExit(500);
+ }
$importer = $r[0];
$dom = simplexml_load_string($xml,'SimpleXMLElement',0,NAMESPACE_SALMON_ME);
- // figure out where in the DOM tree our data is hiding
+ $base = null;
+ // figure out where in the DOM tree our data is hiding
if($dom->provenance->data)
$base = $dom->provenance;
elseif($dom->env->data)
$base = $dom->env;
elseif($dom->data)
$base = $dom;
-
+
if(! $base) {
- logger('mod-salmon: unable to locate salmon data in xml ');
- http_status_exit(400);
+ logger('unable to locate salmon data in xml ');
+ System::httpExit(400);
}
// Stash the signature away for now. We have to find their key or it won't be good for anything.
// 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
$signed_data = $data . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
- $compliant_format = str_replace('=','',$signed_data);
+ $compliant_format = str_replace('=', '', $signed_data);
// 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 = get_markup_template('fake_feed.tpl');
-
- $base = substr($data,strpos($data,'<entry'));
-
- $feedxml = $tpl . $base . '</feed>';
-
- logger('mod-salmon: 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);
- $feed->init();
-
- logger('mod-salmon: Feed parsed.');
-
- if($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.');
- http_status_exit(400);
+ logger('Could not retrieve author URI.');
+ System::httpExit(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('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.');
- http_status_exit(400);
+ logger('Could not retrieve author key.');
+ System::httpExit(400);
}
$key_info = explode('.',$key);
$m = base64url_decode($key_info[1]);
$e = base64url_decode($key_info[2]);
- logger('mod-salmon: key details: ' . print_r($key_info,true), LOGGER_DEBUG);
+ logger('key details: ' . print_r($key_info,true), LOGGER_DEBUG);
- $pubkey = metopem($m,$e);
+ $pubkey = Crypto::meToPem($m, $e);
// We should have everything we need now. Let's see if it verifies.
- $verify = rsa_verify($compliant_format,$signature,$pubkey);
+ // 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 padding hack.');
- $verify = rsa_verify($signed_data,$signature,$pubkey);
- }
+ if (! $verify) {
+ logger('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 padding. Trying old statusnet hack.');
- $verify = rsa_verify($stnet_signed_data,$signature,$pubkey);
- }
+ if (! $verify) {
+ logger('message did not verify using padding. Trying old statusnet format.');
+ $verify = Crypto::rsaVerify($stnet_signed_data, $signature, $pubkey);
+ $mode = 3;
+ }
- if(! $verify) {
- logger('mod-salmon: Message did not verify. Discarding.');
- http_status_exit(400);
+ if (! $verify) {
+ logger('Message did not verify. Discarding.');
+ System::httpExit(400);
}
- logger('mod-salmon: Message verified.');
+ logger('Message verified with mode '.$mode);
/*
*
*/
- $r = q("SELECT * FROM `contact` WHERE `network` = 'stat' AND ( `url` = '%s' OR `alias` = '%s')
- AND `uid` = %d LIMIT 1",
- dbesc($author_link),
- dbesc($author_link),
+ $r = q("SELECT * FROM `contact` WHERE `network` IN ('%s', '%s')
+ AND (`nurl` = '%s' OR `alias` = '%s' OR `alias` = '%s')
+ AND `uid` = %d LIMIT 1",
+ DBA::escape(Protocol::OSTATUS),
+ DBA::escape(Protocol::DFRN),
+ DBA::escape(normalise_link($author_link)),
+ DBA::escape($author_link),
+ DBA::escape(normalise_link($author_link)),
intval($importer['uid'])
);
- if(! count($r)) {
- logger('mod-salmon: Author unknown to us.');
- }
+ if (! DBA::isResult($r)) {
+ logger('Author ' . $author_link . ' unknown to user ' . $importer['uid'] . '.');
+ if(PConfig::get($importer['uid'],'system','ostatus_autofriend')) {
+ $result = Contact::createFromProbe($importer['uid'], $author_link);
+ if($result['success']) {
+ $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND ( `url` = '%s' OR `alias` = '%s')
+ AND `uid` = %d LIMIT 1",
+ DBA::escape(Protocol::OSTATUS),
+ DBA::escape($author_link),
+ DBA::escape($author_link),
+ intval($importer['uid'])
+ );
+ }
+ }
+ }
- // is this a follower? Or have we ignored the person?
+ // Have we ignored the person?
// If so we can not accept this post.
- if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
- logger('mod-salmon: Ignoring this author.');
- http_status_exit(202);
+ //if((DBA::isResult($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == Contact::FOLLOWER) || ($r[0]['blocked']))) {
+ if (DBA::isResult($r) && $r[0]['blocked']) {
+ logger('Ignoring this author.');
+ System::httpExit(202);
// NOTREACHED
}
- 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.
-
+ // 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);
+ $contact_rec = ((DBA::isResult($r)) ? $r[0] : null);
- consume_feed($feedxml,$importer,$contact_rec,$hub);
+ OStatus::import($data, $importer, $contact_rec, $hub);
- http_status_exit(200);
+ System::httpExit(200);
}
-
-
-
-