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/**
*    Copyright (C) 2012 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/db/auth/authz_session_external_state_d.h"

#include "mongo/base/status.h"
#include "mongo/client/dbclientinterface.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/client.h"
#include "mongo/db/dbhelpers.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/scripting/engine.h"
#include "mongo/util/assert_util.h"


namespace mongo {

AuthzSessionExternalStateMongod::AuthzSessionExternalStateMongod(AuthorizationManager* authzManager)
    : AuthzSessionExternalStateServerCommon(authzManager) {}
AuthzSessionExternalStateMongod::~AuthzSessionExternalStateMongod() {}

void AuthzSessionExternalStateMongod::startRequest(OperationContext* txn) {
    // No locks should be held as this happens before any database accesses occur
    dassert(!txn->lockState()->isLocked());

    _checkShouldAllowLocalhost(txn);
}

bool AuthzSessionExternalStateMongod::shouldIgnoreAuthChecks() const {
    // TODO(spencer): get "isInDirectClient" from OperationContext
    return cc().isInDirectClient() ||
        AuthzSessionExternalStateServerCommon::shouldIgnoreAuthChecks();
}

bool AuthzSessionExternalStateMongod::serverIsArbiter() const {
    // Arbiters have access to extra privileges under localhost. See SERVER-5479.
    return (repl::getGlobalReplicationCoordinator()->getReplicationMode() ==
                repl::ReplicationCoordinator::modeReplSet &&
            repl::getGlobalReplicationCoordinator()->getMemberState().arbiter());
}

}  // namespace mongo