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authorfriendica <info@friendica.com>2012-08-29 23:03:03 -0700
committerfriendica <info@friendica.com>2012-08-29 23:03:03 -0700
commitf6d198ce5dcd9fe416975ff760439dfacbb83812 (patch)
tree77be24f7ab74dfcd62c2e621eb6f7568a78d8de6 /mod/salmon.php
parentda49a27aa24b6a85b2623134884d933dc04e201b (diff)
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trim a bit of fat
Diffstat (limited to 'mod/salmon.php')
-rw-r--r--mod/salmon.php229
1 files changed, 0 insertions, 229 deletions
diff --git a/mod/salmon.php b/mod/salmon.php
deleted file mode 100644
index 1e16f9d14..000000000
--- a/mod/salmon.php
+++ /dev/null
@@ -1,229 +0,0 @@
-<?php
-
-
-// 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);
-
- $nick = (($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)
- );
- if(! count($r))
- http_status_exit(500);
-
- $importer = $r[0];
-
- // 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-salmon: unable to locate salmon data in xml ');
- http_status_exit(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);
-
- // 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);
-
- // 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;
-
- // 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);
-
- $compliant_format = str_replace('=','',$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;
- }
- }
-
- if(! $author_link) {
- logger('mod-salmon: Could not retrieve author URI.');
- 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 );
-
-
- $key = get_salmon_key($author_link,$keyhash);
-
- if(! $key) {
- logger('mod-salmon: Could not retrieve author key.');
- http_status_exit(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);
-
- $pubkey = metopem($m,$e);
-
- // We should have everything we need now. Let's see if it verifies.
-
- $verify = rsa_verify($compliant_format,$signature,$pubkey);
-
- if(! $verify) {
- logger('mod-salmon: message did not verify using protocol. Trying padding hack.');
- $verify = rsa_verify($signed_data,$signature,$pubkey);
- }
-
- 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('mod-salmon: Message did not verify. Discarding.');
- http_status_exit(400);
- }
-
- logger('mod-salmon: 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.
- *
- */
-
- $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND ( `url` = '%s' OR `alias` = '%s' )
- AND `uid` = %d LIMIT 1",
- dbesc(NETWORK_OSTATUS),
- dbesc($author_link),
- dbesc($author_link),
- intval($importer['uid'])
- );
- if(! count($r)) {
- logger('mod-salmon: Author unknown to us.');
- if(get_pconfig($importer['uid'],'system','ostatus_autofriend')) {
- require_once('include/follow.php');
- $result = new_contact($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'])
- );
- }
- }
- }
-
- // is this a follower? Or have we ignored the person?
- // If so we can not accept this post.
-
- if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
- logger('mod-salmon: Ignoring this author.');
- http_status_exit(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.
-
- $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);
-
- http_status_exit(200);
-}
-
-
-
-