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/**
* Copyright (C) 2020-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/op_msg_fuzzer_fixture.h"
#include "mongo/db/auth/authorization_session_for_test.h"
#include "mongo/db/auth/authz_manager_external_state_local.h"
#include "mongo/db/catalog/collection_impl.h"
#include "mongo/db/catalog/database_holder_impl.h"
#include "mongo/db/client.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/index/index_access_method_factory_impl.h"
#include "mongo/db/op_observer/op_observer_registry.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/repl_client_info.h"
#include "mongo/db/repl/replication_coordinator_mock.h"
#include "mongo/db/s/collection_sharding_state_factory_standalone.h"
#include "mongo/db/service_entry_point_common.h"
#include "mongo/db/service_entry_point_mongod.h"
#include "mongo/db/storage/control/storage_control.h"
#include "mongo/db/storage/storage_engine_init.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/db/vector_clock_mutable.h"
#include "mongo/transport/service_entry_point_impl.h"
namespace mongo {
namespace {
constexpr auto kTempDirStem = "op_msg_fuzzer_fixture"_sd;
}
// This must be called before creating any new threads that may access `AuthorizationManager` to
// avoid a data-race.
void OpMsgFuzzerFixture::_setAuthorizationManager() {
auto localExternalState = std::make_unique<AuthzManagerExternalStateMock>();
_externalState = localExternalState.get();
auto localAuthzManager =
std::make_unique<AuthorizationManagerImpl>(_serviceContext, std::move(localExternalState));
_authzManager = localAuthzManager.get();
_externalState->setAuthorizationManager(_authzManager);
_authzManager->setAuthEnabled(true);
AuthorizationManager::set(_serviceContext, std::move(localAuthzManager));
}
OpMsgFuzzerFixture::OpMsgFuzzerFixture(bool skipGlobalInitializers)
: _dir(kTempDirStem.toString()) {
if (!skipGlobalInitializers) {
auto ret = runGlobalInitializers(std::vector<std::string>{});
invariant(ret.isOK());
}
setGlobalServiceContext(ServiceContext::make());
_session = _transportLayer.createSession();
_serviceContext = getGlobalServiceContext();
_setAuthorizationManager();
_serviceContext->setServiceEntryPoint(
std::make_unique<ServiceEntryPointMongod>(_serviceContext));
auto observerRegistry = std::make_unique<OpObserverRegistry>();
_serviceContext->setOpObserver(std::move(observerRegistry));
_clientStrand = ClientStrand::make(_serviceContext->makeClient("test", _session));
auto clientGuard = _clientStrand->bind();
auto opCtx = _serviceContext->makeOperationContext(clientGuard.get());
storageGlobalParams.dbpath = _dir.path();
storageGlobalParams.engine = "wiredTiger";
storageGlobalParams.engineSetByUser = true;
storageGlobalParams.repair = false;
serverGlobalParams.enableMajorityReadConcern = false;
// (Generic FCV reference): Initialize FCV.
serverGlobalParams.mutableFeatureCompatibility.setVersion(multiversion::GenericFCV::kLatest);
initializeStorageEngine(opCtx.get(),
StorageEngineInitFlags::kAllowNoLockFile |
StorageEngineInitFlags::kSkipMetadataFile);
StorageControl::startStorageControls(_serviceContext, true /*forTestOnly*/);
CollectionShardingStateFactory::set(
_serviceContext,
std::make_unique<CollectionShardingStateFactoryStandalone>(_serviceContext));
DatabaseHolder::set(_serviceContext, std::make_unique<DatabaseHolderImpl>());
IndexAccessMethodFactory::set(_serviceContext,
std::make_unique<IndexAccessMethodFactoryImpl>());
Collection::Factory::set(_serviceContext, std::make_unique<CollectionImpl::FactoryImpl>());
// Setup the repl coordinator in standalone mode so we don't need an oplog etc.
repl::ReplicationCoordinator::set(
_serviceContext,
std::make_unique<repl::ReplicationCoordinatorMock>(_serviceContext, repl::ReplSettings()));
_serviceContext->getStorageEngine()->notifyStartupComplete();
}
OpMsgFuzzerFixture::~OpMsgFuzzerFixture() {
CollectionShardingStateFactory::clear(_serviceContext);
{
auto clientGuard = _clientStrand->bind();
auto opCtx = _serviceContext->makeOperationContext(clientGuard.get());
Lock::GlobalLock glk(opCtx.get(), MODE_X);
auto databaseHolder = DatabaseHolder::get(opCtx.get());
databaseHolder->closeAll(opCtx.get());
}
shutdownGlobalStorageEngineCleanly(_serviceContext);
}
int OpMsgFuzzerFixture::testOneInput(const char* Data, size_t Size) {
if (Size < sizeof(MSGHEADER::Value)) {
return 0;
}
auto clientGuard = _clientStrand->bind();
auto opCtx = _serviceContext->makeOperationContext(clientGuard.get());
VectorClockMutable::get(_serviceContext)->tickClusterTimeTo(kInMemoryLogicalTime);
int new_size = Size + sizeof(int);
auto sb = SharedBuffer::allocate(new_size);
memcpy(sb.get(), &new_size, sizeof(int));
memcpy(sb.get() + sizeof(int), Data, Size);
Message msg(std::move(sb));
try {
_serviceContext->getServiceEntryPoint()->handleRequest(opCtx.get(), msg).get();
} catch (const AssertionException&) {
// We need to catch exceptions caused by invalid inputs
}
return 0;
}
} // namespace mongo
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