diff options
Diffstat (limited to 'include/zot.php')
| -rw-r--r-- | include/zot.php | 114 |
1 files changed, 108 insertions, 6 deletions
diff --git a/include/zot.php b/include/zot.php index f9682237e..a86948ef9 100644 --- a/include/zot.php +++ b/include/zot.php @@ -2949,6 +2949,11 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { if($packet) logger('packet: ' . print_r($packet, true),LOGGER_DATA, LOG_DEBUG); + $keychange = (($packet && array_key_exists('keychange',$packet)) ? true : false); + if($keychange) { + logger('keychange sync'); + } + if(! $uid) $uid = local_channel(); @@ -2962,6 +2967,7 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { return; $channel = $r[0]; + unset($channel['channel_password']); unset($channel['channel_salt']); @@ -2972,12 +2978,11 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { } } - if(intval($channel['channel_removed'])) return; $h = q("select hubloc.*, site.site_crypto from hubloc left join site on site_url = hubloc_url where hubloc_hash = '%s' and hubloc_deleted = 0", - dbesc($channel['channel_hash']) + dbesc(($keychange) ? $packet['keychange']['old_hash'] : $channel['channel_hash']) ); if(! $h) @@ -3032,7 +3037,15 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { // don't pass these elements, they should not be synchronised - $disallowed = array('channel_id','channel_account_id','channel_primary','channel_prvkey','channel_address','channel_deleted','channel_removed','channel_system'); + + $disallowed = [ + 'channel_id','channel_account_id','channel_primary','channel_address', + 'channel_deleted','channel_removed','channel_system' + ]; + + if(! $keychange) { + $disallowed[] = 'channel_prvkey'; + } if(in_array($k,$disallowed)) continue; @@ -3092,17 +3105,18 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { function process_channel_sync_delivery($sender, $arr, $deliveries) { - require_once('include/import.php'); /** @FIXME this will sync red structures (channel, pconfig and abook). Eventually we need to make this application agnostic. */ - $result = array(); + $result = []; + + $keychange = ((array_key_exists('keychange',$arr)) ? true : false); foreach ($deliveries as $d) { $r = q("select * from channel where channel_hash = '%s' limit 1", - dbesc($d['hash']) + dbesc(($keychange) ? $arr['keychange']['old_hash'] : $d['hash']) ); if (! $r) { @@ -3121,6 +3135,94 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) { continue; } + if($keychange) { + // verify the keychange operation + if(! rsa_verify($arr['channel']['channel_pubkey'],base64url_decode($arr['keychange']['new_sig']),$channel['channel_prvkey'])) { + logger('sync keychange: verification failed'); + continue; + } + + $sig = base64url_encode(rsa_sign($channel['channel_guid'],$arr['channel']['channel_prvkey'])); + $hash = make_xchan_hash($channel['channel_guid'],$sig); + + + $r = q("update channel set channel_prvkey = '%s', channel_pubkey = '%s', channel_guid_sig = '%s', + channel_hash = '%s' where channel_id = %d", + dbesc($arr['channel']['channel_prvkey']), + dbesc($arr['channel']['channel_pubkey']), + dbesc($sig), + dbesc($hash), + intval($channel['channel_id']) + ); + if(! $r) { + logger('keychange sync: channel update failed'); + continue; + } + + $r = q("select * from channel where channel_id = %d", + intval($channel['channel_id']) + ); + + if(! $r) { + logger('keychange sync: channel retrieve failed'); + continue; + } + + $channel = $r[0]; + + $h = q("select * from hubloc where hubloc_hash = '%s' and hubloc_url = '%s' ", + dbesc($arr['keychange']['old_hash']), + dbesc(z_root()) + ); + + if($h) { + foreach($h as $hv) { + $hv['hubloc_guid_sig'] = $sig; + $hv['hubloc_hash'] = $hash; + $hv['hubloc_url_sig'] = base64url_encode(rsa_sign(z_root(),$channel['channel_prvkey'])); + hubloc_store_lowlevel($hv); + } + } + + $x = q("select * from xchan where xchan_hash = '%s' ", + dbesc($arr['keychange']['old_hash']) + ); + + $check = q("select * from xchan where xchan_hash = '%s'", + dbesc($hash) + ); + + if(($x) && (! $check)) { + $oldxchan = $x[0]; + foreach($x as $xv) { + $xv['xchan_guid_sig'] = $sig; + $xv['xchan_hash'] = $hash; + $xv['xchan_pubkey'] = $channel['channel_pubkey']; + xchan_store_lowlevel($xv); + $newxchan = $xv; + } + } + + $a = q("select * from abook where abook_xchan = '%s' and abook_self = 1", + dbesc($arr['keychange']['old_hash']) + ); + + if($a) { + q("update abook set abook_xchan = '%s' where abook_id = %d", + dbesc($hash), + intval($a[0]['abook_id']) + ); + } + + xchan_change_key($oldxchan,$newxchan,$arr['keychange']); + + // keychange operations can end up in a confused state if you try and sync anything else + // besides the channel keys, so ignore any other packets. + + continue; + } + + if(array_key_exists('config',$arr) && is_array($arr['config']) && count($arr['config'])) { foreach($arr['config'] as $cat => $k) { foreach($arr['config'][$cat] as $k => $v) |