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Fix arbitrum L1 to L2 crosschain call detection (#3578)

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* Fix arbitrum L1 to L2 crosschain call detection

* fix BridgeArbitrumL2Mock

* update changelog

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
(cherry picked from commit 81336aefb5)
This commit is contained in:
Hadrien Croubois
2022-07-25 22:42:37 +02:00
committed by Francisco Giordano
parent 41c7b25a65
commit 4337192dc0
3 changed files with 7 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
CHANGELOG.md
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@ -1,5 +1,9 @@
# Changelog
## 4.7.2
* `LibArbitrumL2`, `CrossChainEnabledArbitrumL2`: Fixed detection of cross-chain calls for EOAs. Previously, calls from EOAs would be classified as cross-chain calls. ([#3578](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3578))
## 4.7.1 (2022-07-19)
* `SignatureChecker`: Fix an issue that causes `isValidSignatureNow` to revert when the target contract returns ill-encoded data. ([#3552](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552))

7
contracts/crosschain/arbitrum/LibArbitrumL2.sol
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@ -21,7 +21,7 @@ library LibArbitrumL2 {
address public constant ARBSYS = 0x0000000000000000000000000000000000000064;
function isCrossChain(address arbsys) internal view returns (bool) {
return ArbitrumL2_Bridge(arbsys).isTopLevelCall();
return ArbitrumL2_Bridge(arbsys).wasMyCallersAddressAliased();
}
/**
@ -35,9 +35,6 @@ library LibArbitrumL2 {
function crossChainSender(address arbsys) internal view returns (address) {
if (!isCrossChain(arbsys)) revert NotCrossChainCall();
return
ArbitrumL2_Bridge(arbsys).wasMyCallersAddressAliased()
? ArbitrumL2_Bridge(arbsys).myCallersAddressWithoutAliasing()
: msg.sender;
return ArbitrumL2_Bridge(arbsys).myCallersAddressWithoutAliasing();
}
}

6
contracts/mocks/crosschain/bridges.sol
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@ -70,14 +70,10 @@ contract BridgeArbitrumL1Outbox {
}
contract BridgeArbitrumL2Mock is BaseRelayMock {
function isTopLevelCall() public view returns (bool) {
function wasMyCallersAddressAliased() public view returns (bool) {
return _currentSender != address(0);
}
function wasMyCallersAddressAliased() public pure returns (bool) {
return true;
}
function myCallersAddressWithoutAliasing() public view returns (address) {
return _currentSender;
}