diff options
Diffstat (limited to 'include/zot.php')
| -rw-r--r-- | include/zot.php | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/include/zot.php b/include/zot.php index 9ed3d7d03..b6424c272 100644 --- a/include/zot.php +++ b/include/zot.php @@ -329,8 +329,12 @@ function zot_refresh($them, $channel = null, $force = false) { return false; } + $token = random_string(); + $postvars = array(); + $postvars['token'] = $token; + if($channel) { $postvars['target'] = $channel['channel_guid']; $postvars['target_sig'] = $channel['channel_guid_sig']; @@ -343,11 +347,13 @@ function zot_refresh($them, $channel = null, $force = false) { $postvars['guid_hash'] = $them['xchan_hash']; if (array_key_exists('xchan_guid',$them) && $them['xchan_guid'] && array_key_exists('xchan_guid_sig',$them) && $them['xchan_guid_sig']) { - $postvars['guid'] = $them['xchan_guid']; $postvars['guid_sig'] = $them['xchan_guid_sig']; + } + $token = random_string(); + $rhs = '/.well-known/zot-info'; $result = z_post_url($url . $rhs,$postvars); @@ -363,6 +369,22 @@ function zot_refresh($them, $channel = null, $force = false) { return false; } + $signed_token = ((is_array($j) && array_key_exists('signed_token',$j)) ? $j['signed_token'] : null); + if($signed_token) { + $valid = rsa_verify('token.' . $token,base64url_decode($signed_token),$j['key']); + if(! $valid) { + logger('invalid signed token: ' . $url . $rhs, LOGGER_NORMAL, LOG_WARN); + return false; + } + } + else { + logger('No signed token from ' . $url . $rhs, LOGGER_NORMAL, LOG_WARN); + // after 2017-01-01 this will be a hard error unless you over-ride it. + if((time() > 1483228800) && (! get_config('system','allow_unsigned_zotfinger'))) { + return false; + } + } + $x = import_xchan($j, (($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED)); if(! $x['success']) @@ -1493,7 +1515,7 @@ function public_recips($msg) { /** * @brief * - * This is the second part of public_recipes(). + * This is the second part of public_recips(). * We'll find all the channels willing to accept public posts from us, then * match them against the sender privacy scope and see who in that list that * the sender is allowing. |