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/*
* ChallengeResponseAuthenticator.cpp
*
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ChallengeResponseAuthenticator.h"
#include <Common/Hash.h>
#include <Common/RequestManager.h>
#include <Common/Requests/AuthMethodRequest.h>
namespace Mad {
namespace Client {
namespace Authenticators {
void ChallengeResponseAuthenticator::ChallengeResponseAuthRequest::sendRequest() {
Common::XmlData packet;
packet.setType("Authenticate");
packet.set("method", "Challenge-Response");
packet.set("subMethod", hash);
packet.set("user", username);
sendPacket(packet);
}
void ChallengeResponseAuthenticator::ChallengeResponseAuthRequest::handlePacket(boost::shared_ptr<const Common::XmlData> packet) {
if(packet->getType() == "Error") {
signalFinished(Core::Exception(packet->get<const std::string&>("Where"), static_cast<Core::Exception::ErrorCode>(packet->get<long>("ErrorCode")),
packet->get<long>("SubCode"), packet->get<long>("SubSubCode")));
return;
}
if(!hasResponded) {
if(packet->getType() != "Continue") {
signalFinished(Core::Exception(Core::Exception::UNEXPECTED_PACKET));
return; // TODO Logging
}
Common::XmlData ret;
ret.setType("Authenticate");
ret.set("method", "Challenge-Response");
ret.set("subMethod", hash);
ret.set("user", username);
std::vector<boost::uint8_t> hashedPassword = Common::Hash::hash(std::vector<boost::uint8_t>(password.begin(), password.end()), hash);
const std::vector<boost::uint8_t> &challenge = packet->get<const std::vector<boost::uint8_t>&>("data");
hashedPassword.insert(hashedPassword.end(), challenge.begin(), challenge.end());
ret.set("data", Common::Hash::hash(hashedPassword, hash));
sendPacket(ret);
hasResponded = true;
}
else {
if(packet->getType() != "OK") {
signalFinished(Core::Exception(Core::Exception::UNEXPECTED_PACKET));
return; // TODO Logging
}
signalFinished(packet);
}
}
void ChallengeResponseAuthenticator::authenticate(Common::Application *application, Common::Connection *con, const std::string &username, const std::string &password) throw (Core::Exception) {
std::string hash;
{
boost::shared_ptr<Common::Requests::AuthMethodRequest> request(new Common::Requests::AuthMethodRequest(application));
application->getRequestManager()->sendRequest(con, request);
request->wait();
std::pair<boost::shared_ptr<const Common::XmlData>, Core::Exception> result = request->getResult();
if(!result.first || result.second)
throw result.second;
const Common::XmlData::List *methods = result.first->getList("methods");
for(Common::XmlData::List::const_iterator method = methods->begin(); method != methods->end(); ++method) {
if(method->get<const std::string&>("name") != "Challenge-Response")
continue;
const Common::XmlData::List *subMethods = method->getList("subMethods");
for(Common::XmlData::List::const_iterator subMethod = subMethods->begin(); subMethod != subMethods->end(); ++subMethod) {
if(Common::Hash::isHashSupported(subMethod->get<const std::string&>("name"))) {
hash = subMethod->get<const std::string&>("name");
break;
}
}
break;
}
if(hash.empty())
throw Core::Exception(Core::Exception::NOT_AVAILABLE);
}
application->logf(Core::Logger::LOG_VERBOSE, "Authenticating with method 'Challenge-Response' using hash '%s'...", hash.c_str());
boost::shared_ptr<ChallengeResponseAuthRequest> request(new ChallengeResponseAuthRequest(application, username, password, hash));
application->getRequestManager()->sendRequest(con, request);
request->wait();
std::pair<boost::shared_ptr<const Common::XmlData>, Core::Exception> result = request->getResult();
if(!result.first || result.second)
throw result.second;
if(result.first->getType() != "OK")
throw Core::Exception(Core::Exception::NOT_AVAILABLE);
}
}
}
}
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