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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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kDefault
#include "mongo/platform/basic.h"
#include "mongo/db/initialize_operation_session_info.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands/feature_compatibility_version.h"
#include "mongo/db/logical_session_cache.h"
#include "mongo/db/logical_session_id_helpers.h"
#include "mongo/db/operation_context.h"
#include "mongo/util/log.h"
namespace mongo {
Status initializeOperationSessionInfo(OperationContext* opCtx,
const BSONObj& requestBody,
bool requiresAuth,
bool isReplSetMemberOrMongos,
bool supportsDocLocking) {
auto osi = OperationSessionInfoFromClient::parse("OperationSessionInfo"_sd, requestBody);
if (opCtx->getClient()->isInDirectClient() && (osi.getSessionId() || osi.getTxnNumber())) {
return Status(ErrorCodes::InvalidOptions,
"Invalid to set operation session info in a direct client");
}
if (!requiresAuth) {
return Status::OK();
}
{
// 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->getAuthenticatedUserNames().more()) {
return Status::OK();
}
}
bool isFCV36 = (serverGlobalParams.featureCompatibility.getVersion() ==
ServerGlobalParams::FeatureCompatibility::Version::kFullyUpgradedTo36);
// For the drivers it will look like the session is successfully added in FCV 3.4.
if (osi.getSessionId() && isFCV36) {
stdx::lock_guard<Client> lk(*opCtx->getClient());
opCtx->setLogicalSessionId(makeLogicalSessionId(osi.getSessionId().get(), opCtx));
LogicalSessionCache* lsc = LogicalSessionCache::get(opCtx->getServiceContext());
auto vivifyStatus = lsc->vivify(opCtx, opCtx->getLogicalSessionId().get());
if (vivifyStatus != Status::OK()) {
return vivifyStatus;
}
}
if (osi.getTxnNumber()) {
stdx::lock_guard<Client> lk(*opCtx->getClient());
if (!isFCV36) {
return SessionsCommandFCV34Status("Retryable writes");
}
if (!opCtx->getLogicalSessionId()) {
return {ErrorCodes::IllegalOperation,
"Transaction number requires a sessionId to be specified"};
}
if (!isReplSetMemberOrMongos) {
return {ErrorCodes::IllegalOperation,
"Transaction numbers are only allowed on a replica set member or mongos"};
}
if (!supportsDocLocking) {
return {ErrorCodes::IllegalOperation,
"Transaction numbers are only allowed on storage engines that support "
"document-level locking"};
}
if (*osi.getTxnNumber() < 0) {
return {ErrorCodes::BadValue, "Transaction number cannot be negative"};
}
opCtx->setTxnNumber(*osi.getTxnNumber());
}
return Status::OK();
}
} // namespace mongo
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