Instadapp/smart-contract
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Renewed InstaMaker.

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This commit is contained in:
Sowmayjain 2019-04-01 17:48:50 +05:30
parent 5e92995f13
commit b4a6113f00
2 changed files with 55 additions and 54 deletions
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39
contracts/ProxyLogics/InstaMaker.sol
View File

@ -141,9 +141,6 @@ contract CDPResolver is Helpers {
TokenInterface weth = tub.gem(); TokenInterface weth = tub.gem();
TokenInterface peth = tub.skr(); TokenInterface peth = tub.skr();
(address lad,,,) = tub.cups(cup);
require(lad == address(this), "cup-not-owned");
weth.deposit.value(msg.value)(); weth.deposit.value(msg.value)();
uint ink = rdiv(msg.value, tub.per()); uint ink = rdiv(msg.value, tub.per());
@ -181,28 +178,28 @@ contract CDPResolver is Helpers {
} }
} }
function draw(uint cdpNum, uint wad) public { function draw(uint cdpNum, uint _wad) public {
bytes32 cup = bytes32(cdpNum); bytes32 cup = bytes32(cdpNum);
if (wad > 0) { if (_wad > 0) {
TubInterface tub = TubInterface(getSaiTubAddress()); TubInterface tub = TubInterface(getSaiTubAddress());
(address lad,,,) = tub.cups(cup); tub.draw(cup, _wad);
require(lad == address(this), "cup-not-owned"); tub.sai().transfer(msg.sender, _wad);
tub.draw(cup, wad);
tub.sai().transfer(msg.sender, wad);
} }
} }
function wipe(uint cdpNum, uint wad) public { function wipe(
require(wad > 0, "no-wipe-no-dai"); uint cdpNum,
uint _wad
) public
{
require(_wad > 0, "no-wipe-no-dai");
TubInterface tub = TubInterface(getSaiTubAddress()); TubInterface tub = TubInterface(getSaiTubAddress());
UniswapExchange daiEx = UniswapExchange(getUniswapDAIExchange()); UniswapExchange daiEx = UniswapExchange(getUniswapDAIExchange());
UniswapExchange mkrEx = UniswapExchange(getUniswapMKRExchange()); UniswapExchange mkrEx = UniswapExchange(getUniswapMKRExchange());
TokenInterface dai = tub.sai(); TokenInterface dai = tub.sai();
TokenInterface mkr = tub.gov(); TokenInterface mkr = tub.gov();
PepInterface pep = tub.pep();
bytes32 cup = bytes32(cdpNum); bytes32 cup = bytes32(cdpNum);
@ -210,15 +207,13 @@ contract CDPResolver is Helpers {
setAllowance(mkr, getSaiTubAddress()); setAllowance(mkr, getSaiTubAddress());
setAllowance(dai, getUniswapDAIExchange()); setAllowance(dai, getUniswapDAIExchange());
(bytes32 val, bool ok) = pep.peek(); (bytes32 val, bool ok) = tub.pep().peek();
// MKR required for wipe = Stability fees accrued in Dai / MKRUSD value // MKR required for wipe = Stability fees accrued in Dai / MKRUSD value
uint mkrFee = wdiv(rmul(wad, rdiv(tub.rap(cup), tub.tab(cup))), uint(val)); uint mkrFee = wdiv(rmul(_wad, rdiv(tub.rap(cup), tub.tab(cup))), uint(val));
uint ethAmt = mkrEx.getEthToTokenOutputPrice(mkrFee); uint daiAmt = daiEx.getTokenToEthOutputPrice(mkrEx.getEthToTokenOutputPrice(mkrFee));
uint daiAmt = daiEx.getTokenToEthOutputPrice(ethAmt); daiAmt = add(_wad, daiAmt);
daiAmt = add(wad, daiAmt);
require(dai.transferFrom(msg.sender, address(this), daiAmt), "not-approved-yet"); require(dai.transferFrom(msg.sender, address(this), daiAmt), "not-approved-yet");
if (ok && val != 0) { if (ok && val != 0) {
@ -231,7 +226,7 @@ contract CDPResolver is Helpers {
); );
} }
tub.wipe(cup, wad); tub.wipe(cup, _wad);
} }
function setAllowance(TokenInterface token_, address spender_) private { function setAllowance(TokenInterface token_, address spender_) private {
@ -245,8 +240,8 @@ contract CDPResolver is Helpers {
contract CDPCluster is CDPResolver { contract CDPCluster is CDPResolver {
function wipeAndFree(uint cdpNum, uint jam, uint wad) public payable { function wipeAndFree(uint cdpNum, uint jam, uint _wad) public payable {
wipe(cdpNum, wad); wipe(cdpNum, _wad);
free(cdpNum, jam); free(cdpNum, jam);
} }

70
contracts/ProxyLogics/WipeProxy.sol
View File

@ -1,16 +1,16 @@
pragma solidity ^0.5.0; pragma solidity ^0.5.0;
interface TubLike { interface TubInterface {
function wipe(bytes32, uint) external; function wipe(bytes32, uint) external;
function gov() external view returns (TokenLike); function gov() external view returns (TokenInterface);
function sai() external view returns (TokenLike); function sai() external view returns (TokenInterface);
function tab(bytes32) external returns (uint); function tab(bytes32) external returns (uint);
function rap(bytes32) external returns (uint); function rap(bytes32) external returns (uint);
function pep() external view returns (PepLike); function pep() external view returns (PepInterface);
} }
interface TokenLike { interface TokenInterface {
function allowance(address, address) external view returns (uint); function allowance(address, address) external view returns (uint);
function balanceOf(address) external view returns (uint); function balanceOf(address) external view returns (uint);
function approve(address, uint) external; function approve(address, uint) external;
@ -18,11 +18,11 @@ interface TokenLike {
function transferFrom(address, address, uint) external returns (bool); function transferFrom(address, address, uint) external returns (bool);
} }
interface PepLike { interface PepInterface {
function peek() external returns (bytes32, bool); function peek() external returns (bytes32, bool);
} }
interface UniswapExchangeLike { interface UniswapExchange {
function getEthToTokenOutputPrice(uint256 tokensBought) external view returns (uint256 ethSold); function getEthToTokenOutputPrice(uint256 tokensBought) external view returns (uint256 ethSold);
function getTokenToEthOutputPrice(uint256 ethBought) external view returns (uint256 tokensSold); function getTokenToEthOutputPrice(uint256 ethBought) external view returns (uint256 tokensSold);
function tokenToTokenSwapOutput( function tokenToTokenSwapOutput(
@ -65,38 +65,44 @@ contract DSMath {
contract WipeProxy is DSMath { contract WipeProxy is DSMath {
function wipeWithDai( function getSaiTubAddress() public pure returns (address sai) {
address _tub, sai = 0x448a5065aeBB8E423F0896E6c5D525C040f59af3;
address _daiEx, }
address _mkrEx,
uint cupid, function getUniswapMKRExchange() public pure returns (address ume) {
uint wad ume = 0x2C4Bd064b998838076fa341A83d007FC2FA50957;
}
function getUniswapDAIExchange() public pure returns (address ude) {
ude = 0x09cabEC1eAd1c0Ba254B09efb3EE13841712bE14;
}
function wipe(
uint cdpNum,
uint _wad
) public ) public
{ {
require(wad > 0, "no-wipe-no-dai"); require(_wad > 0, "no-wipe-no-dai");
TubLike tub = TubLike(_tub); TubInterface tub = TubInterface(getSaiTubAddress());
UniswapExchangeLike daiEx = UniswapExchangeLike(_daiEx); UniswapExchange daiEx = UniswapExchange(getUniswapDAIExchange());
UniswapExchangeLike mkrEx = UniswapExchangeLike(_mkrEx); UniswapExchange mkrEx = UniswapExchange(getUniswapMKRExchange());
TokenLike dai = tub.sai(); TokenInterface dai = tub.sai();
TokenLike mkr = tub.gov(); TokenInterface mkr = tub.gov();
PepLike pep = tub.pep();
bytes32 cup = bytes32(cupid); bytes32 cup = bytes32(cdpNum);
setAllowance(dai, _tub); setAllowance(dai, getSaiTubAddress());
setAllowance(mkr, _tub); setAllowance(mkr, getSaiTubAddress());
setAllowance(dai, _daiEx); setAllowance(dai, getUniswapDAIExchange());
(bytes32 val, bool ok) = pep.peek(); (bytes32 val, bool ok) = tub.pep().peek();
// MKR required for wipe = Stability fees accrued in Dai / MKRUSD value // MKR required for wipe = Stability fees accrued in Dai / MKRUSD value
uint mkrFee = wdiv(rmul(wad, rdiv(tub.rap(cup), tub.tab(cup))), uint(val)); uint mkrFee = wdiv(rmul(_wad, rdiv(tub.rap(cup), tub.tab(cup))), uint(val));
uint ethAmt = mkrEx.getEthToTokenOutputPrice(mkrFee); uint daiAmt = daiEx.getTokenToEthOutputPrice(mkrEx.getEthToTokenOutputPrice(mkrFee));
uint daiAmt = daiEx.getTokenToEthOutputPrice(ethAmt); daiAmt = add(_wad, daiAmt);
daiAmt = add(wad, daiAmt);
require(dai.transferFrom(msg.sender, address(this), daiAmt), "not-approved-yet"); require(dai.transferFrom(msg.sender, address(this), daiAmt), "not-approved-yet");
if (ok && val != 0) { if (ok && val != 0) {
@ -109,10 +115,10 @@ contract WipeProxy is DSMath {
); );
} }
tub.wipe(cup, wad); tub.wipe(cup, _wad);
} }
function setAllowance(TokenLike token_, address spender_) private { function setAllowance(TokenInterface token_, address spender_) private {
if (token_.allowance(address(this), spender_) != uint(-1)) { if (token_.allowance(address(this), spender_) != uint(-1)) {
token_.approve(spender_, uint(-1)); token_.approve(spender_, uint(-1));
} }