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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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/system_index.h"
#include "mongo/base/init.h"
#include "mongo/base/status.h"
#include "mongo/client/index_spec.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/commit_quorum_options.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/catalog/index_key_validate.h"
#include "mongo/db/catalog/multi_index_block.h"
#include "mongo/db/client.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/index_builds_coordinator.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/repl_index_build_state.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/future.h"
#include "mongo/util/log.h"
using namespace std::chrono_literals;
namespace mongo {
namespace {
BSONObj v1SystemUsersKeyPattern;
BSONObj v3SystemUsersKeyPattern;
BSONObj v3SystemRolesKeyPattern;
std::string v3SystemUsersIndexName;
std::string v3SystemRolesIndexName;
IndexSpec v3SystemUsersIndexSpec;
IndexSpec v3SystemRolesIndexSpec;
const NamespaceString sessionCollectionNamespace("config.system.sessions");
MONGO_INITIALIZER(AuthIndexKeyPatterns)(InitializerContext*) {
v1SystemUsersKeyPattern = BSON("user" << 1 << "userSource" << 1);
v3SystemUsersKeyPattern = BSON(
AuthorizationManager::USER_NAME_FIELD_NAME << 1 << AuthorizationManager::USER_DB_FIELD_NAME
<< 1);
v3SystemRolesKeyPattern = BSON(
AuthorizationManager::ROLE_NAME_FIELD_NAME << 1 << AuthorizationManager::ROLE_DB_FIELD_NAME
<< 1);
v3SystemUsersIndexName =
std::string(str::stream() << AuthorizationManager::USER_NAME_FIELD_NAME << "_1_"
<< AuthorizationManager::USER_DB_FIELD_NAME
<< "_1");
v3SystemRolesIndexName =
std::string(str::stream() << AuthorizationManager::ROLE_NAME_FIELD_NAME << "_1_"
<< AuthorizationManager::ROLE_DB_FIELD_NAME
<< "_1");
v3SystemUsersIndexSpec.addKeys(v3SystemUsersKeyPattern);
v3SystemUsersIndexSpec.unique();
v3SystemUsersIndexSpec.name(v3SystemUsersIndexName);
v3SystemRolesIndexSpec.addKeys(v3SystemRolesKeyPattern);
v3SystemRolesIndexSpec.unique();
v3SystemRolesIndexSpec.name(v3SystemRolesIndexName);
return Status::OK();
}
SharedSemiFuture<ReplIndexBuildState::IndexCatalogStats> generateSystemIndexForExistingCollection(
OperationContext* opCtx,
UUID collectionUUID,
const NamespaceString& ns,
const IndexSpec& spec) {
// Do not try to generate any system indexes on a secondary.
auto replCoord = repl::ReplicationCoordinator::get(opCtx);
uassert(ErrorCodes::NotMaster,
"Not primary while creating authorization index",
replCoord->getReplicationMode() != repl::ReplicationCoordinator::modeReplSet ||
replCoord->canAcceptWritesForDatabase(opCtx, ns.db()));
invariant(!opCtx->lockState()->inAWriteUnitOfWork());
try {
auto indexSpecStatus = index_key_validate::validateIndexSpec(
opCtx, spec.toBSON(), ns, serverGlobalParams.featureCompatibility);
BSONObj indexSpec = fassert(40452, indexSpecStatus);
log() << "No authorization index detected on " << ns
<< " collection. Attempting to recover by creating an index with spec: " << indexSpec;
UUID buildUUID = UUID::gen();
IndexBuildsCoordinator* indexBuildsCoord = IndexBuildsCoordinator::get(opCtx);
IndexBuildsCoordinator::IndexBuildOptions indexBuildOptions = {CommitQuorumOptions(1)};
auto indexBuildFuture =
uassertStatusOK(indexBuildsCoord->startIndexBuild(opCtx,
collectionUUID,
{indexSpec},
buildUUID,
IndexBuildProtocol::kSinglePhase,
indexBuildOptions));
return indexBuildFuture;
} catch (const DBException& e) {
severe() << "Failed to regenerate index for " << ns << ". Exception: " << e.what();
throw;
}
}
} // namespace
Status verifySystemIndexes(OperationContext* opCtx) {
// Do not try and generate any system indexes in read only mode.
if (storageGlobalParams.readOnly) {
warning() << "Running in queryable backup mode. Unable to create authorization indexes";
return Status::OK();
}
const NamespaceString& systemUsers = AuthorizationManager::usersCollectionNamespace;
const NamespaceString& systemRoles = AuthorizationManager::rolesCollectionNamespace;
boost::optional<SharedSemiFuture<ReplIndexBuildState::IndexCatalogStats>> systemUsersFuture;
boost::optional<SharedSemiFuture<ReplIndexBuildState::IndexCatalogStats>> systemRolesFuture;
// Create indexes for collections on the admin db
{
AutoGetDb autoDb(opCtx, systemUsers.db(), MODE_X);
if (!autoDb.getDb()) {
return Status::OK();
}
Collection* collection = autoDb.getDb()->getCollection(opCtx, systemUsers);
if (collection) {
IndexCatalog* indexCatalog = collection->getIndexCatalog();
invariant(indexCatalog);
// Make sure the old unique index from v2.4 on system.users doesn't exist.
std::vector<const IndexDescriptor*> indexes;
indexCatalog->findIndexesByKeyPattern(opCtx, v1SystemUsersKeyPattern, false, &indexes);
if (!indexes.empty()) {
fassert(ErrorCodes::AmbiguousIndexKeyPattern, indexes.size() == 1);
return Status(ErrorCodes::AuthSchemaIncompatible,
"Old 2.4 style user index identified. "
"The authentication schema needs to be updated by "
"running authSchemaUpgrade on a 2.6 server.");
}
// Ensure that system indexes exist for the user collection
indexCatalog->findIndexesByKeyPattern(opCtx, v3SystemUsersKeyPattern, false, &indexes);
if (indexes.empty()) {
try {
systemUsersFuture = generateSystemIndexForExistingCollection(
opCtx, collection->uuid().get(), systemUsers, v3SystemUsersIndexSpec);
} catch (...) {
return exceptionToStatus();
}
}
}
// Ensure that system indexes exist for the roles collection, if it exists.
collection = autoDb.getDb()->getCollection(opCtx, systemRoles);
if (collection) {
IndexCatalog* indexCatalog = collection->getIndexCatalog();
invariant(indexCatalog);
std::vector<const IndexDescriptor*> indexes;
indexCatalog->findIndexesByKeyPattern(opCtx, v3SystemRolesKeyPattern, false, &indexes);
if (indexes.empty()) {
try {
systemRolesFuture = generateSystemIndexForExistingCollection(
opCtx, collection->uuid().get(), systemRoles, v3SystemRolesIndexSpec);
} catch (...) {
return exceptionToStatus();
}
}
}
}
Status systemUsersStatus = Status::OK();
Status systemRolesStatus = Status::OK();
if (systemUsersFuture) {
systemUsersStatus = systemUsersFuture->waitNoThrow(opCtx);
}
if (systemRolesFuture) {
systemRolesStatus = systemRolesFuture->waitNoThrow(opCtx);
}
if (!systemUsersStatus.isOK()) {
return systemUsersStatus;
}
if (!systemRolesStatus.isOK()) {
return systemRolesStatus;
}
return Status::OK();
}
void createSystemIndexes(OperationContext* opCtx, Collection* collection) {
invariant(collection);
const NamespaceString& ns = collection->ns();
BSONObj indexSpec;
if (ns == AuthorizationManager::usersCollectionNamespace) {
indexSpec =
fassert(40455,
index_key_validate::validateIndexSpec(opCtx,
v3SystemUsersIndexSpec.toBSON(),
ns,
serverGlobalParams.featureCompatibility));
} else if (ns == AuthorizationManager::rolesCollectionNamespace) {
indexSpec =
fassert(40457,
index_key_validate::validateIndexSpec(opCtx,
v3SystemRolesIndexSpec.toBSON(),
ns,
serverGlobalParams.featureCompatibility));
}
if (!indexSpec.isEmpty()) {
opCtx->getServiceContext()->getOpObserver()->onCreateIndex(
opCtx, ns, *(collection->uuid()), indexSpec, false /* fromMigrate */);
// Note that the opObserver is called prior to creating the index. This ensures the index
// write gets the same storage timestamp as the oplog entry.
fassert(40456,
collection->getIndexCatalog()->createIndexOnEmptyCollection(opCtx, indexSpec));
}
}
} // namespace mongo
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