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https://github.com/sthnaqvi/input-data-decoder-ethereum
ethereum transaction input data decoder
https://github.com/sthnaqvi/input-data-decoder-ethereum
Last synced: about 1 month ago
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ethereum transaction input data decoder
- Host: GitHub
- URL: https://github.com/sthnaqvi/input-data-decoder-ethereum
- Owner: sthnaqvi
- License: mit
- Created: 2018-04-04T11:12:45.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2018-10-26T19:16:21.000Z (about 6 years ago)
- Last Synced: 2024-11-11T11:07:51.290Z (about 2 months ago)
- Language: JavaScript
- Homepage: https://input-data-decoder-ethereum.ethorbit.com
- Size: 154 KB
- Stars: 2
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
# ethereum input data decoder
> ethereum transaction input data decoder
Uses [ethereumjs-abi](https://github.com/ethereumjs/ethereumjs-abi) for decoding.
## Demo
[https://input-data-decoder-ethereum.ethorbit.com/](https://input-data-decoder-ethereum.ethorbit.com/)
## Install
```bash
npm install input-data-decoder-ethereum
```
## Usage
Pass [ABI](https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI) file path to decoder constructor:
```javascript
const InputDataDecoder = require('input-data-decoder-ethereum');
const decoder = new InputDataDecoder(`${__dirname}/abi.json`);
```
Alternatively, you can pass ABI array object to constructor;
```javascript
const abi = JSON.parse(fs.readFileSync(`${__dirname}/abi.json`));
const decoder = new InputDataDecoder(abi);
```
[example abi](./test/abi.json)
Then you can decode input data:
```javascript
const data = `0x67043cae0000000000000000000000005a9dac9315fdd1c3d13ef8af7fdfeb522db08f020000000000000000000000000000000000000000000000000000000058a20230000000000000000000000000000000000000000000000000000000000040293400000000000000000000000000000000000000000000000000000000000000a0f3df64775a2dfb6bc9e09dced96d0816ff5055bf95da13ce5b6c3f53b97071c800000000000000000000000000000000000000000000000000000000000000034254430000000000000000000000000000000000000000000000000000000000`;
const result = decoder.decodeData(data);
console.log(result);
```
```text
{
"name": "registerOffChainDonation",
"types": [
"address",
"uint256",
"uint256",
"string",
"bytes32"
],
"inputs": [
,
,
,
"BTC",
]
}
```
Example using input response from [web3.getTransaction](https://github.com/ethereum/wiki/wiki/JavaScript-API#web3ethgettransaction):
```javascript
web3.eth.getTransaction(txHash, (error, txResult) => {
const result = decoder.decodeData(txResult.input);
console.log(result);
});
```
## Test
```bash
npm test
```
## FAQ
- Q: How can I retrieve the ABI?
- A: You can generate the ABI from the solidity source files using the [Solidity Compiler](http://solidity.readthedocs.io/en/develop/installing-solidity.html).
```bash
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.
## License
MIT