diff options
Diffstat (limited to 'mod/post.php')
| -rw-r--r-- | mod/post.php | 48 |
1 files changed, 40 insertions, 8 deletions
diff --git a/mod/post.php b/mod/post.php index af08d3f98..d061a7078 100644 --- a/mod/post.php +++ b/mod/post.php @@ -137,7 +137,7 @@ function post_post(&$a) { logger('mod_zot: ' . print_r($_REQUEST,true), LOGGER_DEBUG); - $ret = array('result' => false); + $ret = array('success' => false); $data = json_decode($_REQUEST['data'],true); @@ -156,6 +156,14 @@ function post_post(&$a) { if($msgtype === 'pickup') { + /** + * The 'pickup' message arrives with a tracking ID which is associated with a particular outq_hash + * First verify that that the returned signatures verify, then check that we have an outbound queue item + * with the correct hash. + * If everything verifies, find any/all outbound messages in the queue for this hubloc and send them back + * + */ + if((! $data['secret']) || (! $data['secret_sig'])) { $ret['message'] = 'no verification signature'; logger('mod_zot: pickup: ' . $ret['message'], LOGGER_DEBUG); @@ -172,7 +180,7 @@ function post_post(&$a) { } // verify the url_sig $sitekey = $r[0]['hubloc_sitekey']; - logger('sitekey: ' . $sitekey); +// logger('sitekey: ' . $sitekey); if(! rsa_verify($data['callback'],base64url_decode($data['callback_sig']),$sitekey)) { $ret['message'] = 'possible site forgery'; @@ -186,7 +194,11 @@ function post_post(&$a) { json_return_and_die($ret); } - // If we made it to here, we've got a valid pickup. Grab everything for this host and send it. + /** + * If we made it to here, the signatures verify, but we still don't know if the tracking ID is valid. + * It wouldn't be an error if the tracking ID isn't found, because we may have sent this particular + * queue item with another pickup (after the tracking ID for the other pickup was verified). + */ $r = q("select outq_posturl from outq where outq_hash = '%s' and outq_posturl = '%s' limit 1", dbesc($data['secret']), @@ -198,6 +210,11 @@ function post_post(&$a) { json_return_and_die($ret); } + /** + * Everything is good if we made it here, so find all messages that are going to this location + * and send them all. + */ + $r = q("select * from outq where outq_posturl = '%s'", dbesc($data['callback']) ); @@ -214,16 +231,31 @@ function post_post(&$a) { } $encrypted = aes_encapsulate(json_encode($ret),$sitekey); json_return_and_die($encrypted); + + /** pickup: end */ } + + /** + * All other message types require us to verify the sender. This is a generic check, so we + * will do it once here and bail if anything goes wrong. + */ + if(array_key_exists('sender',$data)) { $sender = $data['sender']; } + /** Check if the sender is already verified here */ + $hub = zot_gethub($sender); + if(! $hub) { + + /** Have never seen this guid or this guid coming from this location. Check it and register it. */ + // (!!) this will validate the sender $result = zot_register_hub($sender); + if((! $result['success']) || (! zot_gethub($sender))) { $ret['message'] = 'Hub not available.'; logger('mod_zot: no hub'); @@ -249,14 +281,14 @@ function post_post(&$a) { } else { - // basically this means the channel has committed suicide + // Unfriend everybody - basically this means the channel has committed suicide $arr = $data['sender']; $sender_hash = base64url_encode(hash('whirlpool',$arr['guid'] . $arr['guid_sig'], true)); require_once('include/Contact.php'); remove_all_xchan_resources($sender_hash); - $ret['result'] = true; + $ret['success'] = true; json_return_and_die($ret); } @@ -296,7 +328,7 @@ function post_post(&$a) { 'hubloc_url' => $sender['url'] ),null); } - $ret['result'] = true; + $ret['success'] = true; json_return_and_die($ret); } @@ -312,7 +344,7 @@ function post_post(&$a) { $ret['delivery_report'] = $x; } - $ret['result'] = true; + $ret['success'] = true; json_return_and_die($ret); } @@ -366,7 +398,7 @@ function post_post(&$a) { ); logger('mod_zot: auth_check: success', LOGGER_DEBUG); - $ret['result'] = true; + $ret['success'] = true; json_return_and_die($ret); } |