Smart Contract Withdraw Fix

Fix eip 2929 with eip 2930

After the berlin hardfork eip 2929 was added which increased the cost for state access opcodes. This broke any contract which used address.transfer(eth) to gnosis safes because the hard-coded 2300 gas was no longer enough to execute the transaction. In order to help contracts that were affected they made eip 2930 which adds an access list to the transaction. Any address added to this access list has gas prepaid on their behalf as part of the total gas calculation. This reduces the gas required when interacting with them which allows the original 2300 gas to succeed.

Note: Apparently this only works with ethers at the moment.

For our situation we needed to run withdraw() on our smart contract that would allow the transfer to several external payable accounts and one gnosis safe account.

Look at ./src/withdraw.js for a complete example.

NOTE: You must set ./src/wallet.txt with your projects smart contract owner account 12 word seed phrase mnemonic to make the withdraw.js script authorize the transaction.

Original source was taken from https://github.com/folia-app/eip-2929

More Setup Info

Step 1:

Modify the src/wallet.txt with your 12 word seed phrase for the smart contract owner account.

Step 2:

Modify the src/YourSmartContractAbi.json example file and replace the abi array with your smart contracts abi array data.

Step 3:

Modify the src/withdraw.js line 12 <YOUR_INFURA_PROJECT_ID> with your Infura project id.

Step 4:

Modify the src/withdraw.js line 17 <YOUR_SMART_CONTRACT_ADDRESS> with your smart contract address.

Step 5:

Go to the main root of the project folder / and run npm i to install dependenices.

Step 6:

Inside main root of project folder / run npm run this will run the node src/withdraw.js and attempt to perform a withdrawal from your smart contract.

NOTE: Line 39 is assuming your smart contract has a method called withdraw(). This is usually standard, but if your smart contract has a different name for this withdraw method then you must also change the name on this line.

When the above steps are done this will attempt to utilize the overrides object. This uses an updated accessList which is needed to properly handle the gas limit when dealing with Gnosis safe wallets.