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test(evm): precompile call with revert (#2105)
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* test(evm): precompile call with revert

* chore: changelog update
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onikonychev authored Nov 4, 2024
1 parent 528f51a commit 1c8df54
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -98,6 +98,7 @@ depend on x/bank, such as the EVM and Wasm modules.
tests for race conditions within funtoken precompile
- [#2100](https://github.com/NibiruChain/nibiru/pull/2100) - refactor: cleanup statedb and precompile sections
- [#2101](https://github.com/NibiruChain/nibiru/pull/2101) - fix(evm): tx receipt proper marshalling
- [#2105](https://github.com/NibiruChain/nibiru/pull/2105) - test(evm): precompile call with revert


#### Nibiru EVM | Before Audit 1 - 2024-10-18
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@@ -0,0 +1,78 @@
{
"_format": "hh-sol-artifact-1",
"contractName": "TestPrecompileSelfCallRevert",
"sourceName": "contracts/TestPrecompileSelfCallRevert.sol",
"abi": [
{
"inputs": [
{
"internalType": "address",
"name": "erc20_",
"type": "address"
}
],
"stateMutability": "payable",
"type": "constructor"
},
{
"inputs": [
{
"internalType": "address payable",
"name": "nativeRecipient",
"type": "address"
},
{
"internalType": "uint256",
"name": "nativeAmount",
"type": "uint256"
},
{
"internalType": "string",
"name": "precompileRecipient",
"type": "string"
},
{
"internalType": "uint256",
"name": "precompileAmount",
"type": "uint256"
}
],
"name": "selfCallTransferFunds",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address payable",
"name": "nativeRecipient",
"type": "address"
},
{
"internalType": "uint256",
"name": "nativeAmount",
"type": "uint256"
},
{
"internalType": "string",
"name": "precompileRecipient",
"type": "string"
},
{
"internalType": "uint256",
"name": "precompileAmount",
"type": "uint256"
}
],
"name": "transferFunds",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
}
],
"bytecode": 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"linkReferences": {},
"deployedLinkReferences": {}
}
62 changes: 62 additions & 0 deletions x/evm/embeds/contracts/TestPrecompileSelfCallRevert.sol
Original file line number Diff line number Diff line change
@@ -0,0 +1,62 @@
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.24;

import "./IFunToken.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

contract TestPrecompileSelfCallRevert {
address erc20;
uint counter = 0;

constructor(address erc20_) payable {
erc20 = erc20_;
}

function selfCallTransferFunds(
address payable nativeRecipient,
uint256 nativeAmount,
string memory precompileRecipient,
uint256 precompileAmount
) external {
counter++;
try
TestPrecompileSelfCallRevert(payable(address(this))).transferFunds(
nativeRecipient,
nativeAmount,
precompileRecipient,
precompileAmount
)
{} catch // [1]
{
counter++;
}
}

function transferFunds(
address payable nativeRecipient,
uint256 nativeAmount,
string memory precompileRecipient,
uint256 precompileAmount
) external {
require(nativeRecipient.send(nativeAmount), "ETH transfer failed"); // wei

uint256 sentAmount = FUNTOKEN_PRECOMPILE.bankSend(
erc20,
precompileAmount, // micro-WNIBI
precompileRecipient
);

require(
sentAmount == precompileAmount,
string.concat(
"IFunToken.bankSend succeeded but transferred the wrong amount",
"sentAmount ",
Strings.toString(nativeAmount),
"expected ",
Strings.toString(precompileAmount)
)
);

revert(); // [4]
}
}
13 changes: 13 additions & 0 deletions x/evm/embeds/embeds.go
Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,8 @@ var (
testERC20TransferThenPrecompileSendJson []byte
//go:embed artifacts/contracts/TestNativeSendThenPrecompileSend.sol/TestNativeSendThenPrecompileSend.json
testNativeSendThenPrecompileSendJson []byte
//go:embed artifacts/contracts/TestPrecompileSelfCallRevert.sol/TestPrecompileSelfCallRevert.json
testPrecompileSelfCallRevertJson []byte
)

var (
Expand Down Expand Up @@ -96,6 +98,16 @@ var (
Name: "TestERC20TransferThenPrecompileSend.sol",
EmbedJSON: testERC20TransferThenPrecompileSendJson,
}

// SmartContract_TestPrecompileSelfCallRevert is a test contract
// that creates another instance of itself, calls the precompile method and then force reverts.
// It tests a race condition where the state DB commit
// may save the wrong state before the precompile execution, not revert it entirely,
// potentially causing an infinite mint of funds.
SmartContract_TestPrecompileSelfCallRevert = CompiledEvmContract{
Name: "TestPrecompileSelfCallRevert.sol",
EmbedJSON: testPrecompileSelfCallRevertJson,
}
)

func init() {
Expand All @@ -108,6 +120,7 @@ func init() {
SmartContract_TestERC20MaliciousTransfer.MustLoad()
SmartContract_TestNativeSendThenPrecompileSendJson.MustLoad()
SmartContract_TestERC20TransferThenPrecompileSend.MustLoad()
SmartContract_TestPrecompileSelfCallRevert.MustLoad()
}

type CompiledEvmContract struct {
Expand Down
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