ethereum transaction input data decoder
Uses ethereumjs-abi for decoding.
https://input-data-decoder-ethereum.ethorbit.com/
npm install input-data-decoder-ethereumPass ABI file path to decoder constructor:
const InputDataDecoder = require('input-data-decoder-ethereum');
const decoder = new InputDataDecoder(`${__dirname}/abi.json`);Alternatively, you can pass ABI array object to constructor;
const abi = JSON.parse(fs.readFileSync(`${__dirname}/abi.json`));
const decoder = new InputDataDecoder(abi);Then you can decode input data:
const data = `0x67043cae0000000000000000000000005a9dac9315fdd1c3d13ef8af7fdfeb522db08f020000000000000000000000000000000000000000000000000000000058a20230000000000000000000000000000000000000000000000000000000000040293400000000000000000000000000000000000000000000000000000000000000a0f3df64775a2dfb6bc9e09dced96d0816ff5055bf95da13ce5b6c3f53b97071c800000000000000000000000000000000000000000000000000000000000000034254430000000000000000000000000000000000000000000000000000000000`;
const result = decoder.decodeData(data);
console.log(result);{
"name": "registerOffChainDonation",
"types": [
"address",
"uint256",
"uint256",
"string",
"bytes32"
],
"inputs": [
<BN: 5a9dac9315fdd1c3d13ef8af7fdfeb522db08f02>,
<BN: 58a20230>,
<BN: 402934>,
"BTC",
<Buffer f3 df ... 71 c8>
]
}
Example using input response from web3.getTransaction:
web3.eth.getTransaction(txHash, (error, txResult) => {
const result = decoder.decodeData(txResult.input);
console.log(result);
});npm test-
Q: How can I retrieve the ABI?
-
A: You can generate the ABI from the solidity source files using the Solidity Compiler.
solc --abi MyContract.sol -o build
-
-
Q: How do I decode contract creation input data?
- A: Currently this isn't supported but happy to merge in a PR if there's a good solution.
MIT