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March 30, 2020 17:27
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pragma solidity ^0.5.7; | |
interface ProxyAction { | |
function open(address manager, bytes32 ilk, address usr) external returns (uint cdp); | |
function lockETH(address manager, address ethJoin, uint cdp) external payable; | |
function lockETHAndDraw(address manager, address jug, address ethJoin, address daiJoin, uint cdp, uint wadD) external payable; | |
} | |
interface IERC20 { | |
/** | |
* @dev Returns the amount of tokens in existence. | |
*/ | |
function totalSupply() external view returns (uint256); | |
/** | |
* @dev Returns the amount of tokens owned by `account`. | |
*/ | |
function balanceOf(address account) external view returns (uint256); | |
/** | |
* @dev Moves `amount` tokens from the caller's account to `recipient`. | |
* | |
* Returns a boolean value indicating whether the operation succeeded. | |
* | |
* Emits a {Transfer} event. | |
*/ | |
function transfer(address recipient, uint256 amount) external returns (bool); | |
/** | |
* @dev Returns the remaining number of tokens that `spender` will be | |
* allowed to spend on behalf of `owner` through {transferFrom}. This is | |
* zero by default. | |
* | |
* This value changes when {approve} or {transferFrom} are called. | |
*/ | |
function allowance(address owner, address spender) external view returns (uint256); | |
/** | |
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens. | |
* | |
* Returns a boolean value indicating whether the operation succeeded. | |
* | |
* IMPORTANT: Beware that changing an allowance with this method brings the risk | |
* that someone may use both the old and the new allowance by unfortunate | |
* transaction ordering. One possible solution to mitigate this race | |
* condition is to first reduce the spender's allowance to 0 and set the | |
* desired value afterwards: | |
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 | |
* | |
* Emits an {Approval} event. | |
*/ | |
function approve(address spender, uint amount) external returns (bool); | |
/** | |
* @dev Moves `amount` tokens from `sender` to `recipient` using the | |
* allowance mechanism. `amount` is then deducted from the caller's | |
* allowance. | |
* | |
* Returns a boolean value indicating whether the operation succeeded. | |
* | |
* Emits a {Transfer} event. | |
*/ | |
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); | |
/** | |
* @dev Emitted when `value` tokens are moved from one account (`from`) to | |
* another (`to`). | |
* | |
* Note that `value` may be zero. | |
*/ | |
event Transfer(address indexed from, address indexed to, uint256 value); | |
/** | |
* @dev Emitted when the allowance of a `spender` for an `owner` is set by | |
* a call to {approve}. `value` is the new allowance. | |
*/ | |
event Approval(address indexed owner, address indexed spender, uint256 value); | |
} | |
contract Helper { | |
function getCDPManager() public pure returns (address cdpManager) { | |
cdpManager = 0x1476483dD8C35F25e568113C5f70249D3976ba21; | |
} | |
function getProxyAction() public pure returns (address proxyAction) { | |
proxyAction = 0xd1D24637b9109B7f61459176EdcfF9Be56283a7B; | |
} | |
function getJug() public pure returns (address jug) { | |
jug = 0xcbB7718c9F39d05aEEDE1c472ca8Bf804b2f1EaD; | |
} | |
function getDaiJoin() public pure returns (address daiJoin) { | |
daiJoin = 0x5AA71a3ae1C0bd6ac27A1f28e1415fFFB6F15B8c; | |
} | |
function getEthJoin() public pure returns (address ethJoin) { | |
ethJoin = 0x775787933e92b709f2a3C70aa87999696e74A9F8; | |
} | |
} | |
contract MakerConnector is Helper{ | |
function open(bytes32 ilk) public returns(uint) { | |
//for testing | |
ProxyAction(getProxyAction()).open(getCDPManager(), ilk, getProxyAction()); | |
} | |
function lockAndDraw(uint cdp, uint wadD) public payable { | |
ProxyAction(getProxyAction()).lockETHAndDraw.value(msg.value)(getCDPManager(), getJug(), getEthJoin(), getDaiJoin(), cdp, wadD); | |
} | |
} |
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