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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/initialize_operation_session_info.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/logical_session_cache.h"
#include "mongo/db/logical_session_id_helpers.h"
#include "mongo/db/operation_context.h"
namespace mongo {
boost::optional<OperationSessionInfoFromClient> initializeOperationSessionInfo(
OperationContext* opCtx,
const BSONObj& requestBody,
bool requiresAuth,
bool isReplSetMemberOrMongos,
bool supportsDocLocking,
bool supportsRecoverToStableTimestamp) {
if (!requiresAuth) {
return boost::none;
}
{
// If we're using the localhost bypass, and the client hasn't authenticated,
// logical sessions are disabled. A client may authenticate as the __sytem user,
// or as an externally authorized user.
AuthorizationSession* authSession = AuthorizationSession::get(opCtx->getClient());
if (authSession && authSession->isUsingLocalhostBypass() &&
!authSession->isAuthenticated()) {
return boost::none;
}
}
auto osi = OperationSessionInfoFromClient::parse("OperationSessionInfo"_sd, requestBody);
if (osi.getSessionId()) {
stdx::lock_guard<Client> lk(*opCtx->getClient());
auto lsc = LogicalSessionCache::get(opCtx->getServiceContext());
if (!lsc) {
// Ignore session information if the logical session cache has not been set up, e.g. on
// the embedded version of mongod.
return boost::none;
}
opCtx->setLogicalSessionId(makeLogicalSessionId(osi.getSessionId().get(), opCtx));
uassertStatusOK(lsc->vivify(opCtx, opCtx->getLogicalSessionId().get()));
} else {
uassert(ErrorCodes::InvalidOptions,
"Transaction number requires a session ID to also be specified",
!osi.getTxnNumber());
}
if (osi.getTxnNumber()) {
invariant(osi.getSessionId());
stdx::lock_guard<Client> lk(*opCtx->getClient());
uassert(ErrorCodes::IllegalOperation,
"Transaction numbers are only allowed on a replica set member or mongos",
isReplSetMemberOrMongos);
uassert(ErrorCodes::IllegalOperation,
"Transaction numbers are only allowed on storage engines that support "
"document-level locking",
supportsDocLocking);
uassert(ErrorCodes::InvalidOptions,
"Transaction number cannot be negative",
*osi.getTxnNumber() >= 0);
opCtx->setTxnNumber(*osi.getTxnNumber());
} else {
uassert(ErrorCodes::InvalidOptions,
"'autocommit' field requires a transaction number to also be specified",
!osi.getAutocommit());
}
if (osi.getAutocommit()) {
invariant(osi.getTxnNumber());
uassert(ErrorCodes::InvalidOptions,
"Specifying autocommit=true is not allowed.",
!osi.getAutocommit().value());
uassert(ErrorCodes::IllegalOperation,
"Multi-document transactions are only allowed on storage engines that support "
"recover to stable timestamp.",
supportsRecoverToStableTimestamp);
} else {
uassert(ErrorCodes::InvalidOptions,
"'startTransaction' field requires 'autocommit' field to also be specified",
!osi.getStartTransaction());
}
if (osi.getStartTransaction()) {
invariant(osi.getAutocommit());
uassert(ErrorCodes::InvalidOptions,
"Specifying startTransaction=false is not allowed.",
osi.getStartTransaction().value());
}
return osi;
}
} // namespace mongo
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