void OutgoingContactRequest::startConnection()
{
if (m_client)
return;
qDebug() << "Starting outgoing contact request for" << user->uniqueID;
m_client = new ContactRequestClient(user);
connect(m_client, SIGNAL(accepted()), SLOT(accept()));
connect(m_client, SIGNAL(rejected(int)), SLOT(requestRejected(int)));
connect(m_client, SIGNAL(acknowledged()), SLOT(requestAcknowledged()));
connect(m_client, SIGNAL(responseChanged()), SIGNAL(connectedChanged()));
m_client->setMyNickname(myNickname());
m_client->setMessage(message());
m_client->sendRequest();
}
bool ContactRequestClient::buildRequestData(QByteArray cookie)
{
/* [2*length][16*hostname][16*serverCookie][16*connSecret][data:pubkey][str:nick][str:message][data:signature] */
QByteArray requestData;
CommandDataParser request(&requestData);
/* Hostname */
QString hostname = user->hostname();
hostname.truncate(hostname.lastIndexOf(QLatin1Char('.')));
if (hostname.size() != 16)
{
qWarning() << "Cannot send contact request: unable to determine the remote service hostname";
return false;
}
/* Connection secret */
QByteArray connSecret = user->settings()->read<Base64Encode>("localSecret");
if (connSecret.size() != 16)
{
qWarning() << "Cannot send contact request: invalid local secret";
return false;
}
/* Public service key */
Tor::HiddenService *service = user->identity->hiddenService();
CryptoKey serviceKey;
if (!service || !(serviceKey = service->cryptoKey()).isLoaded())
{
qWarning() << "Cannot send contact request: failed to load service key";
return false;
}
QByteArray publicKeyData = serviceKey.encodedPublicKey();
if (publicKeyData.isNull())
{
qWarning() << "Cannot send contact request: failed to encode service key";
return false;
}
/* Build request */
request << (quint16)0; /* placeholder for length */
request.writeFixedData(hostname.toLatin1());
request.writeFixedData(cookie);
request.writeFixedData(connSecret);
request.writeVariableData(publicKeyData);
request << myNickname() << message();
if (request.hasError())
{
qWarning() << "Cannot send contact request: command building failed";
return false;
}
/* Sign request, excluding the length field */
QByteArray signature = serviceKey.signData(requestData.mid(2));
if (signature.isNull())
{
qWarning() << "Cannot send contact request: failed to sign request";
return false;
}
request.writeVariableData(signature);
if (request.hasError())
{
qWarning() << "Cannot send contact request: command building failed";
return false;
}
/* Set length */
qToBigEndian((quint16)requestData.size(), reinterpret_cast<uchar*>(requestData.data()));
/* Send */
qint64 re = socket->write(requestData);
Q_ASSERT(re == requestData.size());
Q_UNUSED(re);
qDebug() << "Contact request for" << user->uniqueID << "sent request data";
return true;
}
