[Hebao1.1] check reimburse GasFee (#1638)

* [Hebao1.1] check reimburse GasFee

* Update ForwarderModule.sol

* Update ForwarderModule.sol

Co-authored-by: Daniel Wang <[email protected]>

Author: kongliangzhong

packages/hebao_v1/contracts/modules/core/ForwarderModule.sol

@@ -4,6 +4,7 @@ pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
 import "../../lib/EIP712.sol";
+import "../../lib/ERC20.sol";
 import "../../lib/MathUint.sol";
 import "../../lib/SignatureUtil.sol";
 import "../../thirdparty/BytesUtil.sol";
@@ -112,10 +113,13 @@ abstract contract ForwarderModule is BaseModule
         )
     {
         uint gasLeft = gasleft();
+        uint gasLimit = (metaTx.gasLimit.mul(64) / 63).add(GAS_OVERHEAD);
+        require(gasLeft >= gasLimit, "OPERATOR_INSUFFICIENT_GAS");
 
+        uint gasCost = gasLimit.mul(metaTx.gasPrice);
         require(
-            gasLeft >= (metaTx.gasLimit.mul(64) / 63).add(GAS_OVERHEAD),
-            "INSUFFICIENT_GAS"
+            ERC20(metaTx.gasToken).balanceOf(metaTx.from) >= gasCost,
+            "WALLET_INSUFFICIENT_GAS"
         );
 
         // The trick is to append the really logical message sender and the