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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::kCommand
#include "mongo/platform/basic.h"
#include "mongo/base/init.h"
#include "mongo/base/status.h"
#include "mongo/bson/util/builder.h"
#include "mongo/client/dbclient_connection.h"
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/resource_pattern.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/cloner.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/rename_collection.h"
#include "mongo/db/index_builder.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/ops/insert.h"
#include "mongo/db/repl/isself.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/util/log.h"
namespace mongo {
using std::unique_ptr;
using std::string;
using std::stringstream;
using std::endl;
/**
* The cloneCollection command is deprecated.
* See http://dochub.mongodb.org/core/clonecollection-deprecation.
*/
class CmdCloneCollection : public ErrmsgCommandDeprecated {
public:
CmdCloneCollection() : ErrmsgCommandDeprecated("cloneCollection") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
virtual std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const {
return CommandHelpers::parseNsFullyQualified(cmdObj);
}
virtual Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const {
std::string ns = parseNs(dbname, cmdObj);
ActionSet actions;
actions.addAction(ActionType::insert);
actions.addAction(ActionType::createIndex); // SERVER-11418
if (shouldBypassDocumentValidationForCommand(cmdObj)) {
actions.addAction(ActionType::bypassDocumentValidation);
}
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(NamespaceString(ns)), actions)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
std::string help() const override {
return "{ cloneCollection: <collection>, from: <host> [,query: <query_filter>] "
"[,copyIndexes:<bool>] }"
"\nCopies a collection from one server to another. Do not use on a single server "
"as the destination "
"is placed at the same db.collection (namespace) as the source.\n";
}
virtual bool errmsgRun(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
string& errmsg,
BSONObjBuilder& result) {
const char* deprecationWarning =
"Support for the cloneCollection command has been deprecated. See "
"http://dochub.mongodb.org/core/clonecollection-deprecation";
warning() << deprecationWarning;
result.append("note", deprecationWarning);
boost::optional<DisableDocumentValidation> maybeDisableValidation;
if (shouldBypassDocumentValidationForCommand(cmdObj))
maybeDisableValidation.emplace(opCtx);
string fromhost = cmdObj.getStringField("from");
if (fromhost.empty()) {
errmsg = "missing 'from' parameter";
return false;
}
{
HostAndPort h(fromhost);
if (repl::isSelf(h, opCtx->getServiceContext())) {
errmsg = "can't cloneCollection from self";
return false;
}
}
auto ns = parseNs(dbname, cmdObj);
// In order to clone a namespace, a user must be allowed to both create and write to that
// namespace. There exist namespaces that are legal to create but not write to (e.g.
// system.profile), and there exist namespaces that are legal to write to but not create,
// so we must check that it is legal to both create and write to the namespace.
auto allowedCreateStatus = userAllowedCreateNS(dbname, nsToCollectionSubstring(ns));
uassertStatusOK(allowedCreateStatus);
auto allowedWriteStatus = userAllowedWriteNS(dbname, nsToCollectionSubstring(ns));
uassertStatusOK(allowedWriteStatus);
BSONObj query = cmdObj.getObjectField("query");
if (query.isEmpty())
query = BSONObj();
BSONElement copyIndexesSpec = cmdObj.getField("copyindexes");
bool copyIndexes = copyIndexesSpec.isBoolean() ? copyIndexesSpec.boolean() : true;
log() << "cloneCollection. collection: " << ns << " from: " << fromhost
<< " query: " << redact(query) << " " << (copyIndexes ? "" : ", not copying indexes");
Cloner cloner;
auto myconn = stdx::make_unique<DBClientConnection>();
if (!myconn->connect(HostAndPort(fromhost), StringData(), errmsg))
return false;
cloner.setConnection(std::move(myconn));
return cloner.copyCollection(
opCtx, ns, query, errmsg, copyIndexes, CollectionOptions::parseForCommand);
}
} cmdCloneCollection;
} // namespace mongo
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