diff options
Diffstat (limited to 'mod/post.php')
| -rw-r--r-- | mod/post.php | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/mod/post.php b/mod/post.php index 20100c032..286eb743d 100644 --- a/mod/post.php +++ b/mod/post.php @@ -200,17 +200,36 @@ function post_post(&$a) { logger('mod_zot: pickup: ' . $ret['message']); json_return_and_die($ret); } - // verify the url_sig - $sitekey = $r[0]['hubloc_sitekey']; -// logger('sitekey: ' . $sitekey); - if(! rsa_verify($data['callback'],base64url_decode($data['callback_sig']),$sitekey)) { + foreach ($r as $hubsite) { + + // verify the url_sig + // If the server was re-installed at some point, there could be multiple hubs with the same url and callback. + // Only one will have a valid key. + + $forgery = true; + $secret_fail = true; + + $sitekey = $hubsite['hubloc_sitekey']; + + // logger('sitekey: ' . $sitekey); + + if(rsa_verify($data['callback'],base64url_decode($data['callback_sig']),$sitekey)) { + $forgery = false; + } + if(rsa_verify($data['secret'],base64url_decode($data['secret_sig']),$sitekey)) { + $secret_fail = false; + } + if((! $forgery) && (! $secret_fail)) + break; + } + if($forgery) { $ret['message'] = 'possible site forgery'; logger('mod_zot: pickup: ' . $ret['message']); json_return_and_die($ret); } - if(! rsa_verify($data['secret'],base64url_decode($data['secret_sig']),$sitekey)) { + if($secret_fail) { $ret['message'] = 'secret validation failed'; logger('mod_zot: pickup: ' . $ret['message']); json_return_and_die($ret); |