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authorMike Macgirvin <mike@macgirvin.com>2010-08-05 02:57:03 -0700
committerMike Macgirvin <mike@macgirvin.com>2010-08-05 02:57:03 -0700
commit40a06771ff2a22f3801dfe174ca318cf4f67c1b1 (patch)
tree118bb7d76726b68d2155229b8039170e5c500d9e /include/notifier.php
parentb294ff63024da5629a0d7b6f66aaa9af6d1dd400 (diff)
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reciprocal verification on notify, poll
Diffstat (limited to 'include/notifier.php')
-rw-r--r--include/notifier.php14
1 files changed, 12 insertions, 2 deletions
diff --git a/include/notifier.php b/include/notifier.php
index a2d313b5f..7d9b09da3 100644
--- a/include/notifier.php
+++ b/include/notifier.php
@@ -267,12 +267,22 @@ echo $xml;
$res = simplexml_load_string($xml);
- if((intval($res->status) != 0) || (! strlen($res->challenge)) || ($res->dfrn_id != $rr['dfrn-id']))
+ if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
continue;
$postvars = array();
+ $sent_dfrn_id = hex2bin($res->dfrn_id);
+
+ $final_dfrn_id = '';
+ openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$rr['pubkey']);
+ $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
+ if($final_dfrn_id != $rr['dfrn-id']) {
+ // did not decode properly - cannot trust this site
+ continue;
+ }
$postvars['dfrn_id'] = $rr['dfrn-id'];
+
$challenge = hex2bin($res->challenge);
openssl_public_decrypt($challenge,$postvars['challenge'],$rr['pubkey']);
@@ -295,7 +305,7 @@ echo $xml;
// Currently there is no retry attempt for failed mail delivery.
// We need to handle this in the UI, report the non-deliverables and try again
- if(($cmd == 'mail) && (intval($res->status) == 0)) {
+ if(($cmd == 'mail') && (intval($res->status) == 0)) {
$r = q("UPDATE `mail` SET `delivered` = 1 WHERE `id` = %d LIMIT 1",
intval($item_id)