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/* Copyright 2012 10gen Inc.
*
* Licensed 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.
*/
#include "mongo/util/gsasl_session.h"
#include <cstdlib>
#include "mongo/util/assert_util.h"
namespace mongo {
GsaslSession::GsaslSession() : _gsaslSession(NULL), _done(false) {}
GsaslSession::~GsaslSession() {
if (_gsaslSession)
gsasl_finish(_gsaslSession);
}
std::string GsaslSession::getMechanism() const {
return gsasl_mechanism_name(_gsaslSession);
}
void GsaslSession::setProperty(Gsasl_property property, const StringData& value) {
gsasl_property_set_raw(_gsaslSession, property, value.rawData(), value.size());
}
const std::string GsaslSession::getProperty(Gsasl_property property) const {
const char* prop = gsasl_property_fast(_gsaslSession, property);
if (prop == NULL) {
return "";
}
return prop;
}
Status GsaslSession::initializeClientSession(Gsasl* gsasl,
const StringData& mechanism,
void* sessionHook) {
return _initializeSession(&gsasl_client_start, gsasl, mechanism, sessionHook);
}
Status GsaslSession::initializeServerSession(Gsasl* gsasl,
const StringData& mechanism,
void* sessionHook) {
return _initializeSession(&gsasl_server_start, gsasl, mechanism, sessionHook);
}
Status GsaslSession::_initializeSession(
GsaslSessionStartFn sessionStartFn,
Gsasl* gsasl, const StringData& mechanism, void* sessionHook) {
if (_done || _gsaslSession)
return Status(ErrorCodes::CannotReuseObject, "Cannot reuse GsaslSession.");
int rc = sessionStartFn(gsasl, mechanism.toString().c_str(), &_gsaslSession);
switch (rc) {
case GSASL_OK:
gsasl_session_hook_set(_gsaslSession, sessionHook);
return Status::OK();
case GSASL_UNKNOWN_MECHANISM:
return Status(ErrorCodes::BadValue, gsasl_strerror(rc));
default:
return Status(ErrorCodes::ProtocolError, gsasl_strerror(rc));
}
}
Status GsaslSession::step(const StringData& inputData, std::string* outputData) {
char* output;
size_t outputSize;
int rc = gsasl_step(_gsaslSession,
inputData.rawData(), inputData.size(),
&output, &outputSize);
if (GSASL_OK == rc)
_done = true;
switch (rc) {
case GSASL_OK:
case GSASL_NEEDS_MORE:
*outputData = std::string(output, output + outputSize);
free(output);
return Status::OK();
case GSASL_AUTHENTICATION_ERROR:
return Status(ErrorCodes::AuthenticationFailed, gsasl_strerror(rc));
default:
return Status(ErrorCodes::ProtocolError, gsasl_strerror(rc));
}
}
} // namespace mongo
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