Dappsys 
Safe, simple, flexible building-blocks for smart-contract systems.
- Auth
-
ds-authds-guardds-roles - Token
-
ds-tokends-vault - Oracle
-
ds-cacheds-value - Util
-
ds-execds-mathds-noteds-proxyds-stopds-thing - Gov
-
ds-multisig
DSStop
DSAuth-protected stop and start
A simple package that adds a stoppable modifier, with DSAuth protected stop
and start functions. Decorating a function with the stoppable modifier will
ensure that it can only execute if the state is not stopped.
Useful in situations where one needs to halt a system for maintenance, in case of emergency, or to simply wind it down after a temporary lifespan.
Actions
stop
Set stopped to true (requires auth)
start
Set stopped to false (requires auth)
/// stop.sol -- mixin for enable/disable functionality
// Copyright (C) 2017 DappHub, LLC
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
pragma solidity ^0.4.13;
import "ds-auth/auth.sol";
import "ds-note/note.sol";
contract DSStop is DSNote, DSAuth {
bool public stopped;
modifier stoppable {
require(!stopped);
_;
}
function stop() public auth note {
stopped = true;
}
function start() public auth note {
stopped = false;
}
}