/**
* On-receive event handler
*
* This handler gets called when server (B) receives a trust_sendkey2 message from server (A),
* and it generally happens to determine whether server (A) did send a corresponding trust_sendkey1
* before. It is also used to send server (B)'s key.
*
* @param array $data
* @param object $msg
* @return boolean
*/
function trust_sendkey2_receive(&$data, &$msg)
{
$serverUrl = getDefault($data['author']['server']);
if ($serverUrl == '') {
$msg->fail('invalid server field in "from" array');
} else {
// does it really originate from server (A)?
if (!$msg->validateSignature()) {
return true;
}
// accept this server (A)'s key for future data
$msg->fromServer->ds['s_key_out'] = $msg->data['mykey'];
DB_UpdateField('servers', $msg->fromServer->ds['s_key'], 's_key_out', $msg->data['mykey']);
$msg->ok();
}
return true;
}
/**
* On-receive event handler
*
* Gets called when this server (A) receives a trust_sendkey1 message from another server (B).
* Usually this means, server (B) wants to establish contact for the first time or it wants
* to revoke its existing key. In both cases, the key can only be accepted when this server (A)
* contacts server (B) to confirm the origin of the trust_sendkey1 message.
*
* @param array $data
* @param object $msg
* @return boolean
*/
function trust_sendkey1_receive(&$data, &$msg)
{
$data['mykey'] = trim($data['mykey']);
$serverUrl = getDefault($data['author']['server']);
if ($serverUrl == '') {
$msg->fail('invalid server field in "author" array');
}
if ($data['mykey'] == '') {
$msg->fail('"mykey" field missing');
} else {
// accept the new key (it's not confirmed yet)
$server = new HubbubServer($serverUrl, true);
$server->ds['s_newkey_out'] = $data['mykey'];
$server->ds['s_key_in'] = getDefault($server->ds['s_key_in'], randomHashId());
DB_UpdateField('servers', $server->ds['s_key'], 's_key_in', $server->ds['s_key_in']);
logError('notrace', 'received temp outbound key: ' . $data['mykey'] . ' /// ' . dumpArray($server->ds));
// now, get origin confirmation
$confirmMsg = new HubbubMessage('trust_sendkey2');
$confirmMsg->author($server->localEntity());
$confirmMsg->owner($server->entity());
$confirmMsg->data['mykey'] = $server->ds['s_key_in'];
$responseData = $confirmMsg->sendtourl($server->ds['s_url'], $server->ds['s_newkey_out']);
if ($responseData['result'] == 'OK') {
/* we need to reload, because the server record might have changed in the meantime */
$server = new HubbubServer($serverUrl, true);
// okay, the remote server really sent the original message
$server->ds['s_key_out'] = $server->ds['s_newkey_out'];
$server->ds['s_status'] = 'OK';
DB_UpdateField('servers', $server->ds['s_key'], 's_key_out', $data['mykey']);
$msg->ok();
} else {
// this didn't work
$server->ds['s_newkey_out'] = '';
$msg->fail('unsuccessful trust_sendkey2: ' . $responseData['reason']);
}
}
return true;
}
function msg_trust_sendkey1()
{
// make a trust_sendkey1 message
$msg = new HubbubMessage('trust_sendkey1');
$msg->to($this->entity());
$msg->data['author'] = $this->localEntity();
$this->save();
// make new key if there is none
$this->ds['s_key_in'] = getDefault($this->ds['s_key_in'], randomHashId());
if ($this->ds['s_url'] != '') {
DB_UpdateField('servers', $this->ds['s_key'], 's_key_in', $this->ds['s_key_in']);
}
$msg->data['mykey'] = $this->ds['s_key_in'];
// we need to save at this point because the other server will try to make a trust_sendkey2-request in the meantime
// send message to other server
$responseData = $msg->sendToUrl($this->ds['s_url']);
if ($responseData['result'] == 'OK') {
$this->ds['s_status'] = 'OK';
$ret = result_ok();
} else {
$this->ds['s_status'] = 'fail';
$this->ds['s_key_in'] = '';
logError('notrace', '[OUT] trust_sendkey1 failed, server ' . $this->ds['s_url'] . ' says: ' . getDefault($responseData['reason'], $responseData['result']));
$ret = result_fail('trust_sendkey1 failed: ' . getDefault($responseData['reason'], $responseData['result']));
}
return $ret;
}