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simpleWithdraw.sol
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simpleWithdraw.sol
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/*
This file is part of the DAO.
The DAO is free software: you can redistribute it and/or modify
it under the terms of the GNU lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The DAO 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 lesser General Public License for more details.
You should have received a copy of the GNU lesser General Public License
along with the DAO. If not, see <http://www.gnu.org/licenses/>.
*/
// TODO: all constants need to be double checked
import "github.com/slockit/DAO/DAO.sol";
contract Withdraw {
DAO constant public mainDAO = DAO(0xbb9bc244d798123fde783fcc1c72d3bb8c189413);
uint constant public totalSupply = 11538165987024671407837618;
uint constant public totalWeiSupply = 11898333978710775162018627;
function withdraw(address donateExtraBalanceTo){
uint balance = mainDAO.balanceOf(msg.sender);
// The msg.sender must call approve(this, balance) beforehand so that
// transferFrom() will work and not throw. We need transferFrom()
// instead of transfer() due to the msg.sender in the latter ending
// up to be the contract
if (!mainDAO.transferFrom(msg.sender, this, balance)
|| !msg.sender.send(balance)
|| !donateExtraBalanceTo.send(balance * totalWeiSupply / totalSupply - balance)) {
throw;
}
}
}