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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
#include "vmime/config.hpp"
#if VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT
#include <sstream>
#include <gsasl.h>
#include "vmime/security/sasl/SASLSession.hpp"
#include "vmime/security/sasl/SASLContext.hpp"
#include "vmime/security/sasl/SASLSocket.hpp"
#include "vmime/security/sasl/SASLAuthenticator.hpp"
namespace vmime {
namespace security {
namespace sasl {
SASLSession::SASLSession(
const string& serviceName,
const shared_ptr <SASLContext>& ctx,
const shared_ptr <authenticator>& auth,
const shared_ptr <SASLMechanism>& mech
)
: m_serviceName(serviceName),
m_context(ctx),
m_auth(auth),
m_mech(mech),
m_gsaslContext(0),
m_gsaslSession(0) {
if (gsasl_init(&m_gsaslContext) != GSASL_OK) {
throw std::bad_alloc();
}
gsasl_client_start(m_gsaslContext, mech->getName().c_str(), &m_gsaslSession);
gsasl_callback_set(m_gsaslContext, gsaslCallback);
gsasl_callback_hook_set(m_gsaslContext, this);
}
SASLSession::~SASLSession() {
gsasl_finish(m_gsaslSession);
m_gsaslSession = NULL;
gsasl_done(m_gsaslContext);
m_gsaslContext = NULL;
}
// static
shared_ptr <SASLSession> SASLSession::create(
const string& serviceName,
const shared_ptr <SASLContext>& ctx,
const shared_ptr <authenticator>& auth,
const shared_ptr <SASLMechanism>& mech
) {
return shared_ptr <SASLSession>(new SASLSession(serviceName, ctx, auth, mech));
}
void SASLSession::init() {
shared_ptr <SASLAuthenticator> saslAuth = dynamicCast <SASLAuthenticator>(m_auth);
if (saslAuth) {
saslAuth->setSASLMechanism(m_mech);
saslAuth->setSASLSession(dynamicCast <SASLSession>(shared_from_this()));
}
}
shared_ptr <authenticator> SASLSession::getAuthenticator() {
return m_auth;
}
shared_ptr <SASLMechanism> SASLSession::getMechanism() {
return m_mech;
}
shared_ptr <SASLContext> SASLSession::getContext() {
return m_context;
}
bool SASLSession::evaluateChallenge(
const byte_t* challenge,
const size_t challengeLen,
byte_t** response,
size_t* responseLen
) {
return m_mech->step(
dynamicCast <SASLSession>(shared_from_this()),
challenge, challengeLen, response, responseLen
);
}
shared_ptr <net::socket> SASLSession::getSecuredSocket(const shared_ptr <net::socket>& sok) {
return make_shared <SASLSocket>(dynamicCast <SASLSession>(shared_from_this()), sok);
}
const string SASLSession::getServiceName() const {
return m_serviceName;
}
// static
int SASLSession::gsaslCallback(
Gsasl* ctx,
Gsasl_session* sctx,
Gsasl_property prop
) {
SASLSession* sess = reinterpret_cast <SASLSession*>(gsasl_callback_hook_get(ctx));
if (!sess) {
return GSASL_AUTHENTICATION_ERROR;
}
shared_ptr <authenticator> auth = sess->getAuthenticator();
try {
string res;
switch (prop) {
case GSASL_AUTHID:
res = auth->getUsername();
break;
case GSASL_PASSWORD:
res = auth->getPassword();
break;
case GSASL_ANONYMOUS_TOKEN:
res = auth->getAnonymousToken();
break;
case GSASL_HOSTNAME:
res = auth->getHostname();
break;
case GSASL_SERVICE:
res = auth->getServiceName();
break;
case GSASL_AUTHZID:
case GSASL_GSSAPI_DISPLAY_NAME:
case GSASL_PASSCODE:
case GSASL_SUGGESTED_PIN:
case GSASL_PIN:
case GSASL_REALM:
default:
return GSASL_NO_CALLBACK;
}
gsasl_property_set(sctx, prop, res.c_str());
return GSASL_OK;
} catch (...) {
return GSASL_NO_CALLBACK;
}
}
} // sasl
} // security
} // vmime
#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT
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