139 lines
4.5 KiB
Solidity
139 lines
4.5 KiB
Solidity
pragma solidity ^0.4.11;
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/// @title Vault
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/// @author Jordi Baylina
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/// @notice This contract holds ether securely for liquid pledging systems. For
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/// this iteration the funds will come straight from the Giveth Multisig as a
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/// safety precaution, but once fully tested and optimized this contract will
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/// be a safe place to store funds equipped with optional variable time delays
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/// to allow for an optional escape hatch to be implemented
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import "./Owned.sol";
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/// @dev This is declares a few functions from `LiquidPledging` so that the
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/// `Vault` contract can interface with the `LiquidPledging` contract
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contract LiquidPledging {
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function confirmPayment(uint64 idNote, uint amount);
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function cancelPayment(uint64 idNote, uint amount);
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}
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/// @dev `Vault` is a higher level contract built off of the `Owned`
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/// contract that holds funds for the liquid pledging system.
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contract Vault is Owned {
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LiquidPledging public liquidPledging; // liquidPledging contract's address
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bool public autoPay; // if false, payments will take 2 txs to be completed
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enum PaymentState {
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Pending, // means the payment is awaiting confirmation
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Paid, // means the payment has been sent
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Canceled // means the payment will never be sent
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}
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/// @dev `Payment` is a public structure that describes the details of
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/// each payment the `ref` param makes it easy to track the movements of
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/// funds transparently by its connection to other `Payment` structs
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struct Payment {
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PaymentState state; //
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bytes32 ref; // an input that references details from other contracts
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address dest; // recipient of the ETH
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uint amount; // amount of ETH (in wei) to be sent
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}
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// @dev An array that contains all the payments for this Vault
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Payment[] public payments;
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// @dev `liquidPledging` is the only address that can call a function with
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/// this modifier
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modifier onlyLiquidPledging() {
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require(msg.sender == address(liquidPledging));
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_;
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}
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/// @dev USED FOR TESTING???
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function VaultMock() {
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}
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function () payable {
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}
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function setLiquidPledging(address _newLiquidPledging) onlyOwner {
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require(address(liquidPledging) == 0x0);
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liquidPledging = LiquidPledging(_newLiquidPledging);
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}
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function setAutopay(bool _automatic) onlyOwner {
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autoPay = _automatic;
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}
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function authorizePayment(bytes32 _ref, address _dest, uint _amount) onlyLiquidPledging returns (uint) {
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uint idPayment = payments.length;
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payments.length ++;
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payments[idPayment].state = PaymentState.Pending;
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payments[idPayment].ref = _ref;
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payments[idPayment].dest = _dest;
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payments[idPayment].amount = _amount;
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AuthorizePayment(idPayment, _ref, _dest, _amount);
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if (autoPay) doConfirmPayment(idPayment);
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return idPayment;
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}
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function confirmPayment(uint _idPayment) onlyOwner {
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doConfirmPayment(_idPayment);
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}
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function doConfirmPayment(uint _idPayment) internal {
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require(_idPayment < payments.length);
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Payment storage p = payments[_idPayment];
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require(p.state == PaymentState.Pending);
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p.state = PaymentState.Paid;
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p.dest.transfer(p.amount); // only ETH denominated in wei
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liquidPledging.confirmPayment(uint64(p.ref), p.amount);
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ConfirmPayment(_idPayment);
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}
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function cancelPayment(uint _idPayment) onlyOwner {
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doCancelPayment(_idPayment);
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}
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function doCancelPayment(uint _idPayment) internal {
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require(_idPayment < payments.length);
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Payment storage p = payments[_idPayment];
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require(p.state == PaymentState.Pending);
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p.state = PaymentState.Canceled;
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liquidPledging.cancelPayment(uint64(p.ref), p.amount);
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CancelPayment(_idPayment);
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}
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function multiConfirm(uint[] _idPayments) onlyOwner {
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for (uint i=0; i < _idPayments.length; i++) {
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doConfirmPayment(_idPayments[i]);
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}
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}
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function multiCancel(uint[] _idPayments) onlyOwner {
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for (uint i=0; i < _idPayments.length; i++) {
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doCancelPayment(_idPayments[i]);
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}
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}
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function nPayments() constant returns (uint) {
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return payments.length;
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}
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event ConfirmPayment(uint indexed idPayment);
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event CancelPayment(uint indexed idPayment);
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event AuthorizePayment(uint indexed idPayment, bytes32 indexed ref, address indexed dest, uint amount);
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}
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