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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/SASLContext.hpp"
#include "vmime/security/sasl/SASLMechanism.hpp"
#include "vmime/base.hpp"
#include "vmime/utility/encoder/encoderFactory.hpp"
#include "vmime/utility/stream.hpp"
#include "vmime/utility/outputStreamStringAdapter.hpp"
#include "vmime/utility/inputStreamStringAdapter.hpp"
#include "vmime/utility/inputStreamByteBufferAdapter.hpp"
namespace vmime {
namespace security {
namespace sasl {
SASLContext::SASLContext() {
if (gsasl_init(&m_gsaslContext) != GSASL_OK) {
throw std::bad_alloc();
}
}
SASLContext::~SASLContext() {
gsasl_done(m_gsaslContext);
}
// static
shared_ptr <SASLContext> SASLContext::create() {
return shared_ptr <SASLContext>(new SASLContext());
}
shared_ptr <SASLSession> SASLContext::createSession(
const string& serviceName,
const shared_ptr <authenticator>& auth,
const shared_ptr <SASLMechanism>& mech
) {
return SASLSession::create
(serviceName, dynamicCast <SASLContext>(shared_from_this()), auth, mech);
}
shared_ptr <SASLMechanism> SASLContext::createMechanism(const string& name) {
return SASLMechanismFactory::getInstance()->create(
dynamicCast <SASLContext>(shared_from_this()), name
);
}
shared_ptr <SASLMechanism> SASLContext::suggestMechanism(
const std::vector <shared_ptr <SASLMechanism> >& mechs
) {
if (mechs.empty()) {
return null;
}
std::ostringstream oss;
for (unsigned int i = 0 ; i < mechs.size() ; ++i) {
oss << mechs[i]->getName() << " ";
}
const string mechList = oss.str();
const char* suggested = gsasl_client_suggest_mechanism(m_gsaslContext, mechList.c_str());
if (suggested) {
for (unsigned int i = 0 ; i < mechs.size() ; ++i) {
if (mechs[i]->getName() == suggested) {
return mechs[i];
}
}
}
return null;
}
void SASLContext::decodeB64(const string& input, byte_t** output, size_t* outputLen) {
string res;
utility::inputStreamStringAdapter is(input);
utility::outputStreamStringAdapter os(res);
shared_ptr <utility::encoder::encoder> dec =
utility::encoder::encoderFactory::getInstance()->create("base64");
dec->decode(is, os);
byte_t* out = new byte_t[res.length()];
std::copy(res.begin(), res.end(), out);
*output = out;
*outputLen = res.length();
}
const string SASLContext::encodeB64(const byte_t* input, const size_t inputLen) {
string res;
utility::inputStreamByteBufferAdapter is(input, inputLen);
utility::outputStreamStringAdapter os(res);
shared_ptr <utility::encoder::encoder> enc =
utility::encoder::encoderFactory::getInstance()->create("base64");
enc->encode(is, os);
return res;
}
const string SASLContext::getErrorMessage(const string& fname, const int code) {
string msg = fname + "() returned ";
#define ERROR(x) \
case x: msg += #x; break;
switch (code)
{
ERROR(GSASL_NEEDS_MORE)
ERROR(GSASL_UNKNOWN_MECHANISM)
ERROR(GSASL_MECHANISM_CALLED_TOO_MANY_TIMES)
ERROR(GSASL_MALLOC_ERROR)
ERROR(GSASL_BASE64_ERROR)
ERROR(GSASL_CRYPTO_ERROR)
ERROR(GSASL_SASLPREP_ERROR)
ERROR(GSASL_MECHANISM_PARSE_ERROR)
ERROR(GSASL_AUTHENTICATION_ERROR)
ERROR(GSASL_INTEGRITY_ERROR)
ERROR(GSASL_NO_CLIENT_CODE)
ERROR(GSASL_NO_SERVER_CODE)
ERROR(GSASL_NO_CALLBACK)
ERROR(GSASL_NO_ANONYMOUS_TOKEN)
ERROR(GSASL_NO_AUTHID)
ERROR(GSASL_NO_AUTHZID)
ERROR(GSASL_NO_PASSWORD)
ERROR(GSASL_NO_PASSCODE)
ERROR(GSASL_NO_PIN)
ERROR(GSASL_NO_SERVICE)
ERROR(GSASL_NO_HOSTNAME)
ERROR(GSASL_GSSAPI_RELEASE_BUFFER_ERROR)
ERROR(GSASL_GSSAPI_IMPORT_NAME_ERROR)
ERROR(GSASL_GSSAPI_INIT_SEC_CONTEXT_ERROR)
ERROR(GSASL_GSSAPI_ACCEPT_SEC_CONTEXT_ERROR)
ERROR(GSASL_GSSAPI_UNWRAP_ERROR)
ERROR(GSASL_GSSAPI_WRAP_ERROR)
ERROR(GSASL_GSSAPI_ACQUIRE_CRED_ERROR)
ERROR(GSASL_GSSAPI_DISPLAY_NAME_ERROR)
ERROR(GSASL_GSSAPI_UNSUPPORTED_PROTECTION_ERROR)
ERROR(GSASL_KERBEROS_V5_INIT_ERROR)
ERROR(GSASL_KERBEROS_V5_INTERNAL_ERROR)
ERROR(GSASL_SECURID_SERVER_NEED_ADDITIONAL_PASSCODE)
ERROR(GSASL_SECURID_SERVER_NEED_NEW_PIN)
default:
msg += "unknown error";
break;
}
#undef ERROR
return msg;
}
} // sasl
} // security
} // vmime
#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT
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