https://github.com/osslabz/evm-abi-decoder

EVM ABI Decoder allows to decode raw input data from EVM tx (on Ethereum or a compatible chain like Avalanche, BSC stc) into processable format obtained from the contract's ABI definition (JSON).
https://github.com/osslabz/evm-abi-decoder

ethereum-abi ethereum-contract etherum evm evm-chains web3

Last synced: 17 days ago
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EVM ABI Decoder allows to decode raw input data from EVM tx (on Ethereum or a compatible chain like Avalanche, BSC stc) into processable format obtained from the contract's ABI definition (JSON).

• Host: GitHub
• URL: https://github.com/osslabz/evm-abi-decoder
• Owner: osslabz
• License: gpl-3.0
• Created: 2022-08-02T10:02:31.000Z (over 3 years ago)
• Default Branch: dev
• Last Pushed: 2025-03-18T19:19:37.000Z (10 months ago)
• Last Synced: 2025-03-31T18:53:05.343Z (10 months ago)
• Topics: ethereum-abi, ethereum-contract, etherum, evm, evm-chains, web3
• Language: Java
• Homepage: https://github.com/osslabz/evm-abi-decoder
• Size: 347 KB
• Stars: 60
• Watchers: 3
• Forks: 25
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
EVM ABI Decoder

===============

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EVM ABI Decoder allows to decode raw input data from a EVM transaction (on Ethereum or a compatible chain like Avalanche, BSC etc.)

into a processable format obtained from the contract's ABi definition (JSON).

**Acknowledgement**:

This project is based on [Bryce Neals's](https://github.com/prettymuchbryce) project [abidecoder](https://github.com/prettymuchbryce/abidecoder) (Kotlin), which itself is a port

of [ConsenSys](https://github.com/ConsenSys) project [abi-decoder](https://github.com/ConsenSys/abi-decoder) (JavaScript).

The original project is written in Kotlin, only published on [JitPack](https://jitpack.io/) (but not on [Maven Central](https://search.maven.org/)) and depends on the now

deprecated [ethereumj](https://github.com/ethereum/ethereumj). These were enough reasons for me to rewrite it in Java ;-)

QuickStart

---------

Maven

------

```xml

    net.osslabz

    evm-abi-decoder

    0.1.2

```

Usage

------

Loads the UniswapV2Router02 contract and parses a swap transaction:

```java

// Abi can be found here: https://etherscan.io/address/0x7a250d5630b4cf539739df2c5dacb4c659f2488d#code

AbiDecoder uniswapv2Abi=new AbiDecoder(this.getClass().getResource("/abiFiles/UniswapV2Router02.json").getFile());

// tx: https://etherscan.io/tx/0xde2b61c91842494ac208e25a2a64d99997c382f6aaf0719d6a719b5cff1f8a07

String inputData="0x18cbafe5000000000000000000000000000000000000000000000000000000000098968000000000000000000000000000000000000000000000000000165284993ac4ac00000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000d4cf8e47beac55b42ae58991785fa326d9384bd10000000000000000000000000000000000000000000000000000000062e8d8510000000000000000000000000000000000000000000000000000000000000002000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2";

/**

 * #  Name          Type       Data

 * ----------------------------------------------------------------------

 * 0  amountIn      uint256    10000000

 * 1  amountOutMin  uint256    6283178947560620

 * 2  path          address[]  0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

 *                             0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2

 * 3  to            address    0xD4CF8e47BeAC55b42Ae58991785Fa326d9384Bd1

 * 4  deadline      uint256    1659426897

 */

DecodedFunctionCall decodedFunctionCall=uniswapv2Abi.decodeFunctionCall(inputData);

System.out.println(decodedFunctionCall.getName()); // prints swapExactTokensForETH

```

Logging

------

This project uses slf4j-api but doesn't package an implementation. This is up to the using application. For the

tests logback is backing slf4j as implementation, with a default configuration logging to STOUT.