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[audit]#7 check dodo exist in dodoETHProxy

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mingda
2020-07-08 17:57:13 +08:00
parent 7a6638f698
commit 89af7361a3
1 changed files with 3 additions and 1 deletions
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4
contracts/DODOEthProxy.sol
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@@ -15,7 +15,6 @@ import {IDODOZoo} from "./intf/IDODOZoo.sol";
import {IERC20} from "./intf/IERC20.sol";
import {IWETH} from "./intf/IWETH.sol";
/**
* @title DODO Eth Proxy
* @author DODO Breeder
@@ -68,6 +67,7 @@ contract DODOEthProxy is ReentrancyGuard {
) external payable preventReentrant returns (uint256 receiveTokenAmount) {
require(msg.value == ethAmount, "ETH_AMOUNT_NOT_MATCH");
address DODO = IDODOZoo(_DODO_ZOO_).getDODO(_WETH_, quoteTokenAddress);
require(DODO != address(0), "DODO_NOT_EXIST");
receiveTokenAmount = IDODO(DODO).querySellBaseToken(ethAmount);
require(receiveTokenAmount >= minReceiveTokenAmount, "RECEIVE_NOT_ENOUGH");
IWETH(_WETH_).deposit{value: ethAmount}();
@@ -84,6 +84,7 @@ contract DODOEthProxy is ReentrancyGuard {
uint256 maxPayTokenAmount
) external preventReentrant returns (uint256 payTokenAmount) {
address DODO = IDODOZoo(_DODO_ZOO_).getDODO(_WETH_, quoteTokenAddress);
require(DODO != address(0), "DODO_NOT_EXIST");
payTokenAmount = IDODO(DODO).queryBuyBaseToken(ethAmount);
require(payTokenAmount <= maxPayTokenAmount, "PAY_TOO_MUCH");
_transferIn(quoteTokenAddress, msg.sender, payTokenAmount);
@@ -102,6 +103,7 @@ contract DODOEthProxy is ReentrancyGuard {
{
require(msg.value == ethAmount, "ETH_AMOUNT_NOT_MATCH");
address DODO = IDODOZoo(_DODO_ZOO_).getDODO(_WETH_, quoteTokenAddress);
require(DODO != address(0), "DODO_NOT_EXIST");
IWETH(_WETH_).deposit{value: ethAmount}();
IWETH(_WETH_).approve(DODO, ethAmount);
IDODO(DODO).depositBaseTo(msg.sender, ethAmount);