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path: root/src/mongo/db/auth/authorization_manager_global.cpp
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/**
*    Copyright (C) 2013 10gen 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.
*/

#include "mongo/platform/basic.h"

#include "mongo/base/disallow_copying.h"
#include "mongo/base/init.h"
#include "mongo/client/auth_helpers.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_manager_global.h"
#include "mongo/db/server_parameters.h"
#include "mongo/util/assert_util.h"

namespace mongo {
namespace {
    AuthorizationManager* globalAuthManager = NULL;

    class AuthzVersionParameter : public ServerParameter {
        MONGO_DISALLOW_COPYING(AuthzVersionParameter);
    public:
        AuthzVersionParameter(ServerParameterSet* sps, const std::string& name);
        virtual void append(OperationContext* txn, BSONObjBuilder& b, const std::string& name);
        virtual Status set(const BSONElement& newValueElement);
        virtual Status setFromString(const std::string& str);
    };

    MONGO_INITIALIZER_GENERAL(AuthzSchemaParameter,
                              MONGO_NO_PREREQUISITES,
                              ("BeginStartupOptionParsing"))(InitializerContext*) {
        new AuthzVersionParameter(ServerParameterSet::getGlobal(),
                                  auth::schemaVersionServerParameter);
        return Status::OK();
    }

    AuthzVersionParameter::AuthzVersionParameter(ServerParameterSet* sps, const std::string& name) :
        ServerParameter(sps, name, false, false) {}

    void AuthzVersionParameter::append(
                    OperationContext* txn, BSONObjBuilder& b, const std::string& name) {
        int authzVersion;
        uassertStatusOK(
                getGlobalAuthorizationManager()->getAuthorizationVersion(txn, &authzVersion));
        b.append(name, authzVersion);
    }

    Status AuthzVersionParameter::set(const BSONElement& newValueElement) {
        return Status(ErrorCodes::InternalError, "set called on unsettable server parameter");
    }

    Status AuthzVersionParameter::setFromString(const std::string& newValueString) {
        return Status(ErrorCodes::InternalError, "set called on unsettable server parameter");
    }
}  // namespace

    void setGlobalAuthorizationManager(AuthorizationManager* authManager) {
        fassert(16841, globalAuthManager == NULL);
        globalAuthManager = authManager;
    }

    void clearGlobalAuthorizationManager() {
        fassert(16843, globalAuthManager != NULL);
        delete globalAuthManager;
        globalAuthManager = NULL;
    }

    AuthorizationManager* getGlobalAuthorizationManager() {
        fassert(16842, globalAuthManager != NULL);
        return globalAuthManager;
    }

} // namespace mongo