approve xtoken when register (#67)

helix-bridge · Mar 27, 2024 · 43f726e · 43f726e
1 parent b1b9d13
commit 43f726e
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diff --git a/helix-contract/contracts/xtoken/v3/base/XTokenIssuing.sol b/helix-contract/contracts/xtoken/v3/base/XTokenIssuing.sol
@@ -50,6 +50,7 @@ contract XTokenIssuing is XTokenBridgeBase {
         }
         xTokens[salt] = _xToken;
         originalTokens[_xToken] = OriginalTokenInfo(_originalChainId, _originalToken);
+        require(IXToken(_xToken).approve(address(this), type(uint256).max) == true, "approve xtoken failed");
         emit IssuingERC20Updated(_originalChainId, _originalToken, _xToken, oldxToken);
     }
 

diff --git a/helix-contract/contracts/xtoken/v3/interfaces/IXToken.sol b/helix-contract/contracts/xtoken/v3/interfaces/IXToken.sol
@@ -6,4 +6,5 @@ interface IXToken {
     function acceptOwnership() external;
     function mint(address account, uint256 amount) external;
     function burn(address account, uint256 amount) external;
+    function approve(address spender, uint256 value) external returns (bool);
 }