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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/session/initialize_operation_session_info.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/session/logical_session_cache.h"
#include "mongo/db/session/logical_session_id_helpers.h"
namespace mongo {
OperationSessionInfoFromClient initializeOperationSessionInfo(OperationContext* opCtx,
const BSONObj& requestBody,
bool requiresAuth,
bool attachToOpCtx,
bool isReplSetMemberOrMongos) {
auto osi = OperationSessionInfoFromClient::parse(IDLParserContext{"OperationSessionInfo"},
requestBody);
auto isAuthorizedForInternalClusterAction =
AuthorizationSession::get(opCtx->getClient())
->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::internal);
if (opCtx->getClient()->isInDirectClient()) {
uassert(50891,
"Invalid to set operation session info in a direct client",
!osi.getSessionId() && !osi.getTxnNumber() && !osi.getAutocommit() &&
!osi.getStartTransaction());
}
if (!requiresAuth) {
uassert(ErrorCodes::OperationNotSupportedInTransaction,
"This command is not supported in transactions",
!osi.getAutocommit());
uassert(
50889, "It is illegal to provide a txnNumber for this command", !osi.getTxnNumber());
}
if (auto authSession = AuthorizationSession::get(opCtx->getClient())) {
// 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.
if (authSession->isUsingLocalhostBypass() && !authSession->isAuthenticated()) {
return {};
}
// Do not initialize lsid when auth is enabled and no user is logged in since
// there is no sensible uid that can be assigned to it.
if (AuthorizationManager::get(opCtx->getServiceContext())->isAuthEnabled() &&
!authSession->isAuthenticated() && !requiresAuth) {
return {};
}
}
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 {};
}
// If osi lsid includes the uid, makeLogicalSessionId will also verify that the hash
// matches with the current user logged in.
auto lsid = makeLogicalSessionId(osi.getSessionId().value(), opCtx);
if (!attachToOpCtx) {
return {};
}
if (isChildSession(lsid)) {
uassert(ErrorCodes::InvalidOptions,
"Internal sessions are only allowed for internal clients",
isAuthorizedForInternalClusterAction);
uassert(ErrorCodes::InvalidOptions,
"Internal sessions are not supported outside of transactions",
osi.getTxnNumber() && osi.getAutocommit() && !osi.getAutocommit().value());
}
opCtx->setLogicalSessionId(std::move(lsid));
uassertStatusOK(lsc->vivify(opCtx, opCtx->getLogicalSessionId().value()));
} 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::InvalidOptions,
"Transaction number cannot be negative",
*osi.getTxnNumber() >= 0);
opCtx->setTxnNumber(*osi.getTxnNumber());
if (auto txnRetryCounter = osi.getTxnRetryCounter()) {
uassert(ErrorCodes::InvalidOptions,
"txnRetryCounter is only allowed for internal clients",
isAuthorizedForInternalClusterAction);
uassert(ErrorCodes::InvalidOptions,
str::stream() << "Cannot specify txnRetryCounter for a retryable write",
osi.getAutocommit().has_value());
uassert(ErrorCodes::InvalidOptions,
"txnRetryCounter cannot be negative",
txnRetryCounter >= 0);
opCtx->setTxnRetryCounter(*txnRetryCounter);
}
} 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());
opCtx->setInMultiDocumentTransaction();
} 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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