Contract-Deployment

如何在沒有 ABI 的情況下部署僅字節碼的合約

  • January 9, 2022

我在鏈上看到了一個合約的字節碼,我想幾乎逐字地重新部署,但問題是沒有驗證——沒有 ABI 或原始碼。在沒有 ABI 的情況下,我仍然可以將此合約重新部署到安全帽實例以測試和主鏈嗎?我可以從反編譯器中獲取 ABI 嗎?我知道如何解析和重現呼叫它的輸入數據,所以不需要了解合約的確切細節。

理想情況下,尋找可以這樣做的程式碼。我猜它通常應該是可能的,但我不知道如何繞過字節碼 + ABI 乙太坊上傳規範(我找不到只接受字節碼並發送它的函式)。

你不需要 ABI 來部署智能合約,它通常被庫的抽象層用來創建動態對象,幫助開發人員進一步呼叫,但在部署階段不使用它。

也就是說,你可以在 99% 的情況下複製和部署已經部署的智能合約而無需任何修改,但如果建構子內部存在特殊的業務邏輯。

這是一個範例,我盲目地從一個著名的複雜且功能齊全的智能合約的原始 TX 中複製並粘貼了有效負載。你能猜出它是什麼嗎?

NodeJS 先決條件:

npm install web3 --save
npm install ethereumjs-tx  --save

帶有混音的本地geth:

geth --http --http.corsdomain="https://remix.ethereum.org" --http.api web3,eth,debug,personal,net --vmdebug --dev console

文件deploy.js

const Web3 = require('web3');
const EthereumTx = require('ethereumjs-tx').Transaction;

// CHANGE THIS WITH YOUR SENDER
let account = '0x000';

const rpcURL = 'http://127.0.0.1:8545';
const web3 = new Web3(rpcURL);

// ABI IS NOT NEEDED
let abi = '[]'

let bytecode = 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let deploy_contract = new web3.eth.Contract(JSON.parse(abi));

let payload = {
   data: bytecode
}

let parameter = {
   from: account,
   gas: web3.utils.toHex(8000000),
   gasPrice: web3.utils.toHex(web3.utils.toWei('30', 'gwei'))
}

deploy_contract.deploy(payload).send(parameter, (err, transactionHash) => {
   console.log('Transaction Hash :', transactionHash);
}).on('confirmation', () => {}).then((newContractInstance) => {
   console.log('Deployed Contract Address : ', newContractInstance.options.address);
})

部署:

node depoly.js

答案:加密貓;)

引用自:https://ethereum.stackexchange.com/questions/117777