diff options
Diffstat (limited to 'include/zot.php')
| -rw-r--r-- | include/zot.php | 570 |
1 files changed, 493 insertions, 77 deletions
diff --git a/include/zot.php b/include/zot.php index 6764072aa..a644bbd06 100644 --- a/include/zot.php +++ b/include/zot.php @@ -12,6 +12,7 @@ require_once('include/crypto.php'); require_once('include/items.php'); require_once('include/hubloc.php'); require_once('include/DReport.php'); +require_once('include/queue_fn.php'); /** @@ -141,7 +142,7 @@ function zot_build_packet($channel, $type = 'notify', $recipients = null, $remot $data[$k] = $v; } - logger('zot_build_packet: ' . print_r($data,true), LOGGER_DATA); + logger('zot_build_packet: ' . print_r($data,true), LOGGER_DATA, LOG_DEBUG); // Hush-hush ultra top-secret mode @@ -193,7 +194,7 @@ function zot_finger($webbie, $channel = null, $autofallback = true) { logger('zot_finger: no address :' . $webbie); return array('success' => false); } - logger('using xchan_addr: ' . $xchan_addr, LOGGER_DATA); + logger('using xchan_addr: ' . $xchan_addr, LOGGER_DATA, LOG_DEBUG); // potential issue here; the xchan_addr points to the primary hub. // The webbie we were called with may not, so it might not be found @@ -210,7 +211,7 @@ function zot_finger($webbie, $channel = null, $autofallback = true) { if ($r[0]['hubloc_network'] && $r[0]['hubloc_network'] !== 'zot') { logger('zot_finger: alternate network: ' . $webbie); - logger('url: '.$url.', net: '.var_export($r[0]['hubloc_network'],true), LOGGER_DATA); + logger('url: '.$url.', net: '.var_export($r[0]['hubloc_network'],true), LOGGER_DATA, LOG_DEBUG); return array('success' => false); } } else { @@ -287,9 +288,9 @@ function zot_refresh($them, $channel = null, $force = false) { return true; } - logger('zot_refresh: them: ' . print_r($them,true), LOGGER_DATA); + logger('zot_refresh: them: ' . print_r($them,true), LOGGER_DATA, LOG_DEBUG); if ($channel) - logger('zot_refresh: channel: ' . print_r($channel,true), LOGGER_DATA); + logger('zot_refresh: channel: ' . print_r($channel,true), LOGGER_DATA, LOG_DEBUG); $url = null; @@ -352,7 +353,7 @@ function zot_refresh($them, $channel = null, $force = false) { $result = z_post_url($url . $rhs,$postvars); - logger('zot_refresh: zot-info: ' . print_r($result,true), LOGGER_DATA); + logger('zot_refresh: zot-info: ' . print_r($result,true), LOGGER_DATA, LOG_DEBUG); if ($result['success']) { @@ -380,7 +381,7 @@ function zot_refresh($them, $channel = null, $force = false) { $channel['channel_prvkey']); if($permissions) $permissions = json_decode($permissions,true); - logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA); + logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA, LOG_DEBUG); } else $permissions = $j['permissions']; @@ -613,7 +614,7 @@ function zot_register_hub($arr) { $x = z_fetch_url($url); - logger('zot_register_hub: ' . print_r($x,true), LOGGER_DATA); + logger('zot_register_hub: ' . print_r($x,true), LOGGER_DATA, LOG_DEBUG); if($x['success']) { $record = json_decode($x['body'],true); @@ -753,8 +754,8 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) { dbesc($xchan_hash) ); - logger('import_xchan: update: existing: ' . print_r($r[0],true), LOGGER_DATA); - logger('import_xchan: update: new: ' . print_r($arr,true), LOGGER_DATA); + logger('import_xchan: update: existing: ' . print_r($r[0],true), LOGGER_DATA, LOG_DEBUG); + logger('import_xchan: update: new: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); $what .= 'xchan '; $changed = true; } @@ -954,7 +955,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) { $ret['hash'] = $xchan_hash; } - logger('import_xchan: result: ' . print_r($ret,true), LOGGER_DATA); + logger('import_xchan: result: ' . print_r($ret,true), LOGGER_DATA, LOG_DEBUG); return $ret; } @@ -979,7 +980,7 @@ function zot_process_response($hub, $arr, $outq) { if (! $x) { logger('zot_process_response: No json from ' . $hub); - logger('zot_process_response: headers: ' . print_r($arr['header'],true), LOGGER_DATA); + logger('zot_process_response: headers: ' . print_r($arr['header'],true), LOGGER_DATA, LOG_DEBUG); } if(is_array($x) && array_key_exists('delivery_report',$x) && is_array($x['delivery_report'])) { @@ -997,7 +998,9 @@ function zot_process_response($hub, $arr, $outq) { } } - q("delete from dreport where dreport_queue = '%s' limit 1", + // we have a more descriptive delivery report, so discard the per hub 'queued' report. + + q("delete from dreport where dreport_queue = '%s' ", dbesc($outq['outq_hash']) ); @@ -1011,18 +1014,8 @@ function zot_process_response($hub, $arr, $outq) { // synchronous message types are handled immediately // async messages remain in the queue until processed. - if (intval($outq['outq_async'])) { - q("update outq set outq_delivered = 1, outq_updated = '%s' where outq_hash = '%s' and outq_channel = %d", - dbesc(datetime_convert()), - dbesc($outq['outq_hash']), - intval($outq['outq_channel']) - ); - } else { - q("delete from outq where outq_hash = '%s' and outq_channel = %d", - dbesc($outq['outq_hash']), - intval($outq['outq_channel']) - ); - } + if(intval($outq['outq_async'])) + remove_queue_item($outq['outq_hash'],$outq['outq_channel']); logger('zot_process_response: ' . print_r($x,true), LOGGER_DEBUG); } @@ -1044,7 +1037,7 @@ function zot_process_response($hub, $arr, $outq) { */ function zot_fetch($arr) { - logger('zot_fetch: ' . print_r($arr,true), LOGGER_DATA); + logger('zot_fetch: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); $url = $arr['sender']['url'] . $arr['callback']; @@ -1141,7 +1134,7 @@ function zot_import($arr, $sender_url) { $i['notify'] = json_decode(crypto_unencapsulate($i['notify'],get_config('system','prvkey')),true); } - logger('zot_import: notify: ' . print_r($i['notify'],true), LOGGER_DATA); + logger('zot_import: notify: ' . print_r($i['notify'],true), LOGGER_DATA, LOG_DEBUG); $hub = zot_gethub($i['notify']['sender']); if((! $hub) || ($hub['hubloc_url'] != $sender_url)) { @@ -1158,7 +1151,7 @@ function zot_import($arr, $sender_url) { if(array_key_exists('message',$i) && array_key_exists('type',$i['message']) && $i['message']['type'] === 'rating') { // rating messages are processed only by directory servers - logger('Rating received: ' . print_r($arr,true), LOGGER_DATA); + logger('Rating received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); $result = process_rating_delivery($i['notify']['sender'],$i['message']); continue; } @@ -1268,8 +1261,8 @@ function zot_import($arr, $sender_url) { continue; } - logger('Activity received: ' . print_r($arr,true), LOGGER_DATA); - logger('Activity recipients: ' . print_r($deliveries,true), LOGGER_DATA); + logger('Activity received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); + logger('Activity recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); $relay = ((array_key_exists('flags',$i['message']) && in_array('relay',$i['message']['flags'])) ? true : false); $result = process_delivery($i['notify']['sender'],$arr,$deliveries,$relay,false,$message_request); @@ -1277,16 +1270,16 @@ function zot_import($arr, $sender_url) { elseif($i['message']['type'] === 'mail') { $arr = get_mail_elements($i['message']); - logger('Mail received: ' . print_r($arr,true), LOGGER_DATA); - logger('Mail recipients: ' . print_r($deliveries,true), LOGGER_DATA); + logger('Mail received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); + logger('Mail recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); $result = process_mail_delivery($i['notify']['sender'],$arr,$deliveries); } elseif($i['message']['type'] === 'profile') { $arr = get_profile_elements($i['message']); - logger('Profile received: ' . print_r($arr,true), LOGGER_DATA); - logger('Profile recipients: ' . print_r($deliveries,true), LOGGER_DATA); + logger('Profile received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); + logger('Profile recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); $result = process_profile_delivery($i['notify']['sender'],$arr,$deliveries); } @@ -1295,16 +1288,16 @@ function zot_import($arr, $sender_url) { $arr = $i['message']; - logger('Channel sync received: ' . print_r($arr,true), LOGGER_DATA); - logger('Channel sync recipients: ' . print_r($deliveries,true), LOGGER_DATA); + logger('Channel sync received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); + logger('Channel sync recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); $result = process_channel_sync_delivery($i['notify']['sender'],$arr,$deliveries); } elseif($i['message']['type'] === 'location') { $arr = $i['message']; - logger('Location message received: ' . print_r($arr,true), LOGGER_DATA); - logger('Location message recipients: ' . print_r($deliveries,true), LOGGER_DATA); + logger('Location message received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); + logger('Location message recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); $result = process_location_delivery($i['notify']['sender'],$arr,$deliveries); } @@ -1490,7 +1483,7 @@ function public_recips($msg) { } } - logger('public_recips: ' . print_r($r,true), LOGGER_DATA); + logger('public_recips: ' . print_r($r,true), LOGGER_DATA, LOG_DEBUG); return $r; } @@ -1508,7 +1501,7 @@ function public_recips($msg) { */ function allowed_public_recips($msg) { - logger('allowed_public_recips: ' . print_r($msg,true),LOGGER_DATA); + logger('allowed_public_recips: ' . print_r($msg,true),LOGGER_DATA, LOG_DEBUG); if(array_key_exists('public_scope',$msg['message'])) $scope = $msg['message']['public_scope']; @@ -1611,6 +1604,14 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $ $channel = $r[0]; $DR->addto_recipient($channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>'); + /* blacklisted channels get a permission denied, no special message to tip them off */ + + if(! check_channelallowed($sender['hash'])) { + $DR->update('permission denied'); + $result[] = $DR->get(); + continue; + } + /** * @FIXME: Somehow we need to block normal message delivery from our clones, as the delivered * message doesn't have ACL information in it as the cloned copy does. That copy @@ -2082,6 +2083,14 @@ function process_mail_delivery($sender, $arr, $deliveries) { $channel = $r[0]; $DR->addto_recipient($channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>'); + /* blacklisted channels get a permission denied, no special message to tip them off */ + + if(! check_channelallowed($sender['hash'])) { + $DR->update('permission denied'); + $result[] = $DR->get(); + continue; + } + if(! perm_is_allowed($channel['channel_id'],$sender['hash'],'post_mail')) { logger("permission denied for mail delivery {$channel['channel_id']}"); $DR->update('permission denied'); @@ -2864,7 +2873,7 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { logger('build_sync_packet'); if($packet) - logger('packet: ' . print_r($packet, true),LOGGER_DATA); + logger('packet: ' . print_r($packet, true),LOGGER_DATA, LOG_DEBUG); if(! $uid) $uid = local_channel(); @@ -2958,24 +2967,19 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { $interval = ((get_config('system','delivery_interval') !== false) ? intval(get_config('system','delivery_interval')) : 2 ); - - logger('build_sync_packet: packet: ' . print_r($info,true), LOGGER_DATA); + logger('build_sync_packet: packet: ' . print_r($info,true), LOGGER_DATA, LOG_DEBUG); foreach($synchubs as $hub) { $hash = random_string(); $n = zot_build_packet($channel,'notify',$env_recips,$hub['hubloc_sitekey'],$hash); - q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", - dbesc($hash), - intval($channel['channel_account']), - intval($channel['channel_id']), - dbesc('zot'), - dbesc($hub['hubloc_callback']), - intval(1), - dbesc(datetime_convert()), - dbesc(datetime_convert()), - dbesc($n), - dbesc(json_encode($info)) - ); + queue_insert(array( + 'hash' => $hash, + 'account_id' => $channel['channel_account_id'], + 'channel_id' => $channel['channel_id'], + 'posturl' => $hub['hubloc_callback'], + 'notify' => $n, + 'msg' => json_encode($info) + )); proc_run('php', 'include/deliver.php', $hash); if($interval) @@ -3478,13 +3482,13 @@ function import_author_zot($x) { * @param array $data * @return array */ -function zot_process_message_request($data) { +function zot_reply_message_request($data) { $ret = array('success' => false); if (! $data['message_id']) { $ret['message'] = 'no message_id'; logger('no message_id'); - return $ret; + json_return_and_die($ret); } $sender = $data['sender']; @@ -3502,7 +3506,7 @@ function zot_process_message_request($data) { if (! $c) { logger('recipient channel not found.'); $ret['message'] .= 'recipient not found.' . EOL; - return $ret; + json_return_and_die($ret); } /* @@ -3514,13 +3518,13 @@ function zot_process_message_request($data) { if ($messages) { $env_recips = null; - $r = q("select * from hubloc where hubloc_hash = '%s' and not hubloc_error and not hubloc_deleted + $r = q("select * from hubloc where hubloc_hash = '%s' and hubloc_error = 0 and hubloc_deleted = 0 group by hubloc_sitekey", dbesc($sender_hash) ); if (! $r) { logger('no hubs'); - return $ret; + json_return_and_die($ret); } $hubs = $r; @@ -3538,20 +3542,15 @@ function zot_process_message_request($data) { */ $n = zot_build_packet($c[0],'notify',$env_recips,(($private) ? $hub['hubloc_sitekey'] : null),$hash,array('message_id' => $data['message_id'])); - q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, - outq_created, outq_updated, outq_notify, outq_msg ) - values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", - dbesc($hash), - intval($c[0]['channel_account_id']), - intval($c[0]['channel_id']), - dbesc('zot'), - dbesc($hub['hubloc_callback']), - intval(1), - dbesc(datetime_convert()), - dbesc(datetime_convert()), - dbesc($n), - dbesc($data_packet) - ); + + queue_insert(array( + 'hash' => $hash, + 'account_id' => $c[0]['channel_account_id'], + 'channel_id' => $c[0]['channel_id'], + 'posturl' => $hub['hubloc_callback'], + 'notify' => $n, + 'msg' => $data_packet + )); /* * invoke delivery to send out the notify packet @@ -3561,8 +3560,7 @@ function zot_process_message_request($data) { } } $ret['success'] = true; - - return $ret; + json_return_and_die($ret); } @@ -3783,6 +3781,7 @@ function zotinfo($arr) { $ret['site'] = array(); $ret['site']['url'] = z_root(); $ret['site']['url_sig'] = base64url_encode(rsa_sign(z_root(),$e['channel_prvkey'])); + $ret['site']['zot_auth'] = z_root() . '/magic'; $dirmode = get_config('system','directory_mode'); if(($dirmode === false) || ($dirmode == DIRECTORY_MODE_NORMAL)) @@ -3865,7 +3864,7 @@ function zotinfo($arr) { function check_zotinfo($channel,$locations,&$ret) { -// logger('locations: ' . print_r($locations,true),LOGGER_DATA); +// logger('locations: ' . print_r($locations,true),LOGGER_DATA, LOG_DEBUG); // This function will likely expand as we find more things to detect and fix. // 1. Because magic-auth is reliant on it, ensure that the system channel has a valid hubloc @@ -3973,3 +3972,420 @@ function delivery_report_is_storable($dr) { } + +function update_hub_connected($hub,$sitekey = '') { + + if($sitekey) { + + /* + * This hub has now been proven to be valid. + * Any hub with the same URL and a different sitekey cannot be valid. + * Get rid of them (mark them deleted). There's a good chance they were re-installs. + */ + + q("update hubloc set hubloc_deleted = 1, hubloc_error = 1 where hubloc_url = '%s' and hubloc_sitekey != '%s' ", + dbesc($hub['hubloc_url']), + dbesc($sitekey) + ); + + } + else { + $sitekey = $hub['sitekey']; + } + + // $sender['sitekey'] is a new addition to the protcol to distinguish + // hublocs coming from re-installed sites. Older sites will not provide + // this field and we have to still mark them valid, since we can't tell + // if this hubloc has the same sitekey as the packet we received. + + + // Update our DB to show when we last communicated successfully with this hub + // This will allow us to prune dead hubs from using up resources + + $r = q("update hubloc set hubloc_connected = '%s' where hubloc_id = %d and hubloc_sitekey = '%s' ", + dbesc(datetime_convert()), + intval($hub['hubloc_id']), + dbesc($sitekey) + ); + + // a dead hub came back to life - reset any tombstones we might have + + if(intval($hub['hubloc_error'])) { + q("update hubloc set hubloc_error = 0 where hubloc_id = %d and hubloc_sitekey = '%s' ", + intval($hub['hubloc_id']), + dbesc($sitekey) + ); + if(intval($r[0]['hubloc_orphancheck'])) { + q("update hubloc set hubloc_orhpancheck = 0 where hubloc_id = %d and hubloc_sitekey = '%s' ", + intval($hub['hubloc_id']), + dbesc($sitekey) + ); + } + q("update xchan set xchan_orphan = 0 where xchan_orphan = 1 and xchan_hash = '%s'", + dbesc($hub['hubloc_hash']) + ); + } + + return $hub['hubloc_url']; +} + + +function zot_reply_ping() { + + $ret = array('success'=> false); + + // Useful to get a health check on a remote site. + // This will let us know if any important communication details + // that we may have stored are no longer valid, regardless of xchan details. + logger('POST: got ping send pong now back: ' . z_root() , LOGGER_DEBUG ); + + $ret['success'] = true; + $ret['site'] = array(); + $ret['site']['url'] = z_root(); + $ret['site']['url_sig'] = base64url_encode(rsa_sign(z_root(),get_config('system','prvkey'))); + $ret['site']['sitekey'] = get_config('system','pubkey'); + json_return_and_die($ret); +} + +function zot_reply_pickup($data) { + + $ret = array('success'=> false); + + /* + * 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: ' . $ret['message'], LOGGER_DEBUG); + json_return_and_die($ret); + } + + $r = q("select distinct hubloc_sitekey from hubloc where hubloc_url = '%s' and hubloc_callback = '%s' and hubloc_sitekey != '' group by hubloc_sitekey ", + dbesc($data['url']), + dbesc($data['callback']) + ); + if(! $r) { + $ret['message'] = 'site not found'; + logger('mod_zot: pickup: ' . $ret['message']); + json_return_and_die($ret); + } + + 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('mod_zot: Checking sitekey: ' . $sitekey, LOGGER_DATA, LOG_DEBUG); + + if(rsa_verify($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($secret_fail) { + $ret['message'] = 'secret validation failed'; + logger('mod_zot: pickup: ' . $ret['message']); + json_return_and_die($ret); + } + + /* + * 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']), + dbesc($data['callback']) + ); + if(! $r) { + $ret['message'] = 'nothing to pick up'; + logger('mod_zot: pickup: ' . $ret['message']); + json_return_and_die($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']) + ); + if($r) { + logger('mod_zot: successful pickup message received from ' . $data['callback'] . ' ' . count($r) . ' message(s) picked up', LOGGER_DEBUG); + + $ret['success'] = true; + $ret['pickup'] = array(); + foreach($r as $rr) { + if($rr['outq_msg']) { + $x = json_decode($rr['outq_msg'],true); + + if(! $x) + continue; + + if(is_array($x) && array_key_exists('message_list',$x)) { + foreach($x['message_list'] as $xx) { + $ret['pickup'][] = array('notify' => json_decode($rr['outq_notify'],true),'message' => $xx); + } + } + else + $ret['pickup'][] = array('notify' => json_decode($rr['outq_notify'],true),'message' => $x); + + remove_queue_item($rr['outq_hash']); + } + } + } + + $encrypted = crypto_encapsulate(json_encode($ret),$sitekey); + json_return_and_die($encrypted); + + /* pickup: end */ +} + + + +function zot_reply_auth_check($data,$encrypted_packet) { + + $ret = array('success' => false); + + /* + * Requestor visits /magic/?dest=somewhere on their own site with a browser + * magic redirects them to $destsite/post [with auth args....] + * $destsite sends an auth_check packet to originator site + * The auth_check packet is handled here by the originator's site + * - the browser session is still waiting + * inside $destsite/post for everything to verify + * If everything checks out we'll return a token to $destsite + * and then $destsite will verify the token, authenticate the browser + * session and then redirect to the original destination. + * If authentication fails, the redirection to the original destination + * will still take place but without authentication. + */ + logger('mod_zot: auth_check', LOGGER_DEBUG); + + if (! $encrypted_packet) { + logger('mod_zot: auth_check packet was not encrypted.'); + $ret['message'] .= 'no packet encryption' . EOL; + json_return_and_die($ret); + } + + $arr = $data['sender']; + $sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); + + // garbage collect any old unused notifications + + // This was and should be 10 minutes but my hosting provider has time lag between the DB and + // the web server. We should probably convert this to webserver time rather than DB time so + // that the different clocks won't affect it and allow us to keep the time short. + + q("delete from verify where type = 'auth' and created < %s - INTERVAL %s", + db_utcnow(), db_quoteinterval('30 MINUTE') + ); + + $y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1", + dbesc($sender_hash) + ); + + // We created a unique hash in mod/magic.php when we invoked remote auth, and stored it in + // the verify table. It is now coming back to us as 'secret' and is signed by a channel at the other end. + // First verify their signature. We will have obtained a zot-info packet from them as part of the sender + // verification. + + if ((! $y) || (! rsa_verify($data['secret'], base64url_decode($data['secret_sig']),$y[0]['xchan_pubkey']))) { + logger('mod_zot: auth_check: sender not found or secret_sig invalid.'); + $ret['message'] .= 'sender not found or sig invalid ' . print_r($y,true) . EOL; + json_return_and_die($ret); + } + + // There should be exactly one recipient, the original auth requestor + + $ret['message'] .= 'recipients ' . print_r($recipients,true) . EOL; + + if ($data['recipients']) { + + $arr = $data['recipients'][0]; + $recip_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']); + $c = q("select channel_id, channel_account_id, channel_prvkey from channel where channel_hash = '%s' limit 1", + dbesc($recip_hash) + ); + if (! $c) { + logger('mod_zot: auth_check: recipient channel not found.'); + $ret['message'] .= 'recipient not found.' . EOL; + json_return_and_die($ret); + } + + $confirm = base64url_encode(rsa_sign($data['secret'] . $recip_hash,$c[0]['channel_prvkey'])); + + // This additionally checks for forged sites since we already stored the expected result in meta + // and we've already verified that this is them via zot_gethub() and that their key signed our token + + $z = q("select id from verify where channel = %d and type = 'auth' and token = '%s' and meta = '%s' limit 1", + intval($c[0]['channel_id']), + dbesc($data['secret']), + dbesc($data['sender']['url']) + ); + if (! $z) { + logger('mod_zot: auth_check: verification key not found.'); + $ret['message'] .= 'verification key not found' . EOL; + json_return_and_die($ret); + } + $r = q("delete from verify where id = %d", + intval($z[0]['id']) + ); + + $u = q("select account_service_class from account where account_id = %d limit 1", + intval($c[0]['channel_account_id']) + ); + + logger('mod_zot: auth_check: success', LOGGER_DEBUG); + $ret['success'] = true; + $ret['confirm'] = $confirm; + if ($u && $u[0]['account_service_class']) + $ret['service_class'] = $u[0]['account_service_class']; + + // Set "do not track" flag if this site or this channel's profile is restricted + // in some way + + if (intval(get_config('system','block_public'))) + $ret['DNT'] = true; + if (! perm_is_allowed($c[0]['channel_id'],'','view_profile')) + $ret['DNT'] = true; + if (get_pconfig($c[0]['channel_id'],'system','do_not_track')) + $ret['DNT'] = true; + if (get_pconfig($c[0]['channel_id'],'system','hide_online_status')) + $ret['DNT'] = true; + + json_return_and_die($ret); + } + json_return_and_die($ret); +} + + +function zot_reply_purge($sender,$recipients) { + + $ret = array('success' => false); + + if ($recipients) { + // basically this means "unfriend" + foreach ($recipients as $recip) { + $r = q("select channel.*,xchan.* from channel + left join xchan on channel_hash = xchan_hash + where channel_guid = '%s' and channel_guid_sig = '%s' limit 1", + dbesc($recip['guid']), + dbesc($recip['guid_sig']) + ); + if ($r) { + $r = q("select abook_id from abook where uid = %d and abook_xchan = '%s' limit 1", + intval($r[0]['channel_id']), + dbesc(make_xchan_hash($sender['guid'],$sender['guid_sig'])) + ); + if ($r) { + contact_remove($r[0]['channel_id'],$r[0]['abook_id']); + } + } + } + $ret['success'] = true; + } + else { + // Unfriend everybody - basically this means the channel has committed suicide + $arr = $sender; + $sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); + + require_once('include/Contact.php'); + remove_all_xchan_resources($sender_hash); + + $ret['success'] = true; + } + + json_return_and_die($ret); +} + + +function zot_reply_refresh($sender,$recipients) { + + $ret = array('success' => false); + + // remote channel info (such as permissions or photo or something) + // has been updated. Grab a fresh copy and sync it. + // The difference between refresh and force_refresh is that + // force_refresh unconditionally creates a directory update record, + // even if no changes were detected upon processing. + + if($recipients) { + + // This would be a permissions update, typically for one connection + + foreach ($recipients as $recip) { + $r = q("select channel.*,xchan.* from channel + left join xchan on channel_hash = xchan_hash + where channel_guid = '%s' and channel_guid_sig = '%s' limit 1", + dbesc($recip['guid']), + dbesc($recip['guid_sig']) + ); + + $x = zot_refresh(array( + 'xchan_guid' => $sender['guid'], + 'xchan_guid_sig' => $sender['guid_sig'], + 'hubloc_url' => $sender['url'] + ), $r[0], (($msgtype === 'force_refresh') ? true : false)); + } + } + else { + // system wide refresh + + $x = zot_refresh(array( + 'xchan_guid' => $sender['guid'], + 'xchan_guid_sig' => $sender['guid_sig'], + 'hubloc_url' => $sender['url'] + ), null, (($msgtype === 'force_refresh') ? true : false)); + } + + $ret['success'] = true; + json_return_and_die($ret); + +} + + +function zot_reply_notify($data) { + + $ret = array('success' => false); + + logger('notify received from ' . $data['sender']['url']); + + $async = get_config('system','queued_fetch'); + + if($async) { + // add to receive queue + // qreceive_add($data); + } + else { + $x = zot_fetch($data); + $ret['delivery_report'] = $x; + } + + $ret['success'] = true; + json_return_and_die($ret); + +}
\ No newline at end of file |