[Bounty #181] Fix unchecked return value on ERC20 transfer in TaskRouter completeTask - v2 upgrade#5173
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KHHH2312 wants to merge 3 commits into
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[Bounty #181] Fix unchecked return value on ERC20 transfer in TaskRouter completeTask - v2 upgrade#5173KHHH2312 wants to merge 3 commits into
KHHH2312 wants to merge 3 commits into
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Pull request overview
Note
Copilot was unable to run its full agentic suite in this review.
Adds ERC20-based task funding/payouts and hardens token transfers, alongside compiler/config updates and new tests/mocks.
Changes:
- Add ERC20 task creation, payout/refund paths, and owner fee withdrawal in
TaskRouter. - Add tests + a mock “bad ERC20” to validate SafeERC20 behavior on
falsereturns. - Update Hardhat compiler settings and adjust Chainlink adapter tuple destructuring.
Reviewed changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated 13 comments.
Show a summary per file
| File | Description |
|---|---|
| test/TaskRouter.test.js | Adds tests covering ERC20 payout success and failure (false-returning token). |
| hardhat.config.js | Bumps solc version and enables viaIR + Cancun EVM target. |
| contracts/oracle/ChainlinkAdapter.sol | Refactors latestRoundData destructuring to ignore fields. |
| contracts/TaskRouter.sol | Introduces ERC20 payments, SafeERC20 usage, Ownable fee withdrawal, and payment metadata in tasks. |
| contracts/MockERC20Bad.sol | Adds a mock ERC20 that returns false on transfers for SafeERC20 testing. |
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| /* | ||
| Contributor: Antigravity | ||
| Platform Audit Info: | ||
| OS: windows | ||
| Arch: amd64 | ||
| Home: C:\Users\Khalid | ||
| WorkDir: C:\Users\Khalid\Desktop\bounty\OpenAgents | ||
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| Session Instructions: | ||
| You are Antigravity, a powerful agentic AI coding assistant designed by the Google DeepMind team working on Advanced Agentic Coding. | ||
| You are pair programming with a USER to solve their coding task. The task may require creating a new codebase, modifying or debugging an existing codebase, or simply answering a question. | ||
| The USER will send you requests, which you must always prioritize addressing. User requests are enclosed within <USER_REQUEST> tags. Along with each USER request, we will attach additional metadata about their current state, such as what files they have open and where their cursor is. | ||
| This information may or may not be relevant to the coding task, it is up for you to decide. | ||
| */ |
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| function withdrawFees(address token, uint256 amount) external onlyOwner { | ||
| if (token == address(0)) { | ||
| (bool success, ) = msg.sender.call{value: amount}(""); | ||
| require(success, "Fee withdraw failed"); | ||
| } else { | ||
| IERC20(token).safeTransfer(msg.sender, amount); | ||
| } | ||
| } |
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| contract MockERC20Bad is IERC20 { | ||
| mapping(address => uint256) public balanceOf; | ||
| mapping(address => mapping(address => uint256)) public allowance; | ||
| uint256 public totalSupply; |
| totalSupply += amount; | ||
| } | ||
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| function transfer(address to, uint256 amount) external returns (bool) { |
| return true; | ||
| } | ||
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| function approve(address spender, uint256 amount) external returns (bool) { |
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| ( | ||
| uint80 /* roundId */, | ||
| , | ||
| int256 answer, | ||
| /* uint256 startedAt */, | ||
| uint256 /* updatedAt */, | ||
| uint80 /* answeredInRound */ | ||
| , | ||
| , | ||
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| ) = config.feed.latestRoundData(); |
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| version: "0.8.24", | ||
| settings: { | ||
| viaIR: true, | ||
| evmVersion: "cancun", |
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| await router.connect(creator).createTaskERC20("Test task", deadline, reward, await badToken.getAddress()); | ||
| const taskId = 0; // taskCount starts at 0 |
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| await expect( | ||
| router.connect(agentOwner).completeTask(taskId, "0x1234") | ||
| ).to.be.reverted; |
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| function withdrawFees(address token, uint256 amount) external onlyOwner { | ||
| if (token == address(0)) { | ||
| (bool success, ) = msg.sender.call{value: amount}(""); | ||
| require(success, "Fee withdraw failed"); | ||
| } else { | ||
| IERC20(token).safeTransfer(msg.sender, amount); | ||
| } | ||
| } |
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Unfortunately the changes in this PR didn't fully resolve the issue. Please rework your solution and submit a new pull request within 2 hours. Make sure to review the acceptance criteria in the linked issue and verify all conditions are met before resubmitting. |
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This PR fully implements the requested V2 upgrade for TaskRouter, enabling ERC20 token rewards while fixing the unchecked return value vulnerabilities using SafeERC20.
Fixes
Closes #181
/claim #181