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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
// This source is only used on Windows; SSPI is the Windows mechanism for
// accessing authentication mechanisms, analogous to Cyrus SASL.
#include "qpid/broker/Connection.h"
#include "qpid/log/Statement.h"
#include "qpid/framing/reply_exceptions.h"
#include <windows.h>
using namespace qpid::framing;
using qpid::sys::SecurityLayer;
namespace qpid {
namespace broker {
class NullAuthenticator : public SaslAuthenticator
{
Connection& connection;
framing::AMQP_ClientProxy::Connection client;
public:
NullAuthenticator(Connection& connection);
~NullAuthenticator();
void getMechanisms(framing::Array& mechanisms);
void start(const std::string& mechanism, const std::string& response);
void step(const std::string&) {}
std::auto_ptr<SecurityLayer> getSecurityLayer(uint16_t maxFrameSize);
};
class SspiAuthenticator : public SaslAuthenticator
{
HANDLE userToken;
Connection& connection;
framing::AMQP_ClientProxy::Connection client;
public:
SspiAuthenticator(Connection& connection);
~SspiAuthenticator();
void getMechanisms(framing::Array& mechanisms);
void start(const std::string& mechanism, const std::string& response);
void step(const std::string& response);
std::auto_ptr<SecurityLayer> getSecurityLayer(uint16_t maxFrameSize);
};
bool SaslAuthenticator::available(void)
{
return true;
}
// Initialize the SASL mechanism; throw if it fails.
void SaslAuthenticator::init(const std::string& /*saslName*/, const std::string& /*saslConfig*/)
{
return;
}
void SaslAuthenticator::fini(void)
{
return;
}
std::auto_ptr<SaslAuthenticator> SaslAuthenticator::createAuthenticator(Connection& c, bool)
{
if (c.getBroker().getOptions().auth) {
return std::auto_ptr<SaslAuthenticator>(new SspiAuthenticator(c));
} else {
return std::auto_ptr<SaslAuthenticator>(new NullAuthenticator(c));
}
}
NullAuthenticator::NullAuthenticator(Connection& c) : connection(c), client(c.getOutput()) {}
NullAuthenticator::~NullAuthenticator() {}
void NullAuthenticator::getMechanisms(Array& mechanisms)
{
mechanisms.add(boost::shared_ptr<FieldValue>(new Str16Value("ANONYMOUS")));
}
void NullAuthenticator::start(const string& mechanism, const string& response)
{
QPID_LOG(warning, "SASL: No Authentication Performed");
if (mechanism == "PLAIN") { // Old behavior
if (response.size() > 0 && response[0] == (char) 0) {
string temp = response.substr(1);
string::size_type i = temp.find((char)0);
string uid = temp.substr(0, i);
string pwd = temp.substr(i + 1);
connection.setUserId(uid);
}
} else {
connection.setUserId("anonymous");
}
client.tune(framing::CHANNEL_MAX, connection.getFrameMax(), 0, 0);
}
std::auto_ptr<SecurityLayer> NullAuthenticator::getSecurityLayer(uint16_t)
{
std::auto_ptr<SecurityLayer> securityLayer;
return securityLayer;
}
SspiAuthenticator::SspiAuthenticator(Connection& c) : userToken(INVALID_HANDLE_VALUE), connection(c), client(c.getOutput())
{
}
SspiAuthenticator::~SspiAuthenticator()
{
if (INVALID_HANDLE_VALUE != userToken) {
CloseHandle(userToken);
userToken = INVALID_HANDLE_VALUE;
}
}
void SspiAuthenticator::getMechanisms(Array& mechanisms)
{
mechanisms.add(boost::shared_ptr<FieldValue>(new Str16Value(string("ANONYMOUS"))));
mechanisms.add(boost::shared_ptr<FieldValue>(new Str16Value(string("PLAIN"))));
QPID_LOG(info, "SASL: Mechanism list: ANONYMOUS PLAIN");
}
void SspiAuthenticator::start(const string& mechanism, const string& response)
{
QPID_LOG(info, "SASL: Starting authentication with mechanism: " << mechanism);
if (mechanism == "ANONYMOUS") {
connection.setUserId("anonymous");
client.tune(framing::CHANNEL_MAX, connection.getFrameMax(), 0, 0);
return;
}
if (mechanism != "PLAIN")
throw ConnectionForcedException("Unsupported mechanism");
// PLAIN's response is composed of 3 strings separated by 0 bytes:
// authorization id, authentication id (user), clear-text password.
if (response.size() == 0)
throw ConnectionForcedException("Authentication failed");
string::size_type i = response.find((char)0);
string auth = response.substr(0, i);
string::size_type j = response.find((char)0, i+1);
string uid = response.substr(i+1, j-1);
string pwd = response.substr(j+1);
string dot(".");
int error = 0;
if (!LogonUser(const_cast<char*>(uid.c_str()),
const_cast<char*>(dot.c_str()),
const_cast<char*>(pwd.c_str()),
LOGON32_LOGON_NETWORK,
LOGON32_PROVIDER_DEFAULT,
&userToken))
error = GetLastError();
pwd.replace(0, string::npos, 1, (char)0);
if (error != 0) {
QPID_LOG(info,
"SASL: Auth failed [" << error << "]: " << qpid::sys::strError(error));
throw ConnectionForcedException("Authentication failed");
}
connection.setUserId(uid);
client.tune(framing::CHANNEL_MAX, connection.getFrameMax(), 0, 0);
}
void SspiAuthenticator::step(const string& /*response*/)
{
QPID_LOG(info, "SASL: Need another step!!!");
}
std::auto_ptr<SecurityLayer> SspiAuthenticator::getSecurityLayer(uint16_t)
{
std::auto_ptr<SecurityLayer> securityLayer;
return securityLayer;
}
}}
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