set-home-domain.js

set-home-domain.js

// Sample code to log a validator's home domain on ledger:
//
// Copyright (c) 2020, Tiffany Hayden
// Licensed under the 3-Clause BSD License

const StellarSdk = require('stellar-sdk')

function usage() {
    console.log('');
    console.log('Usage:');
    console.log('node set-home-domain.js [-nosubmit] [-xdr] [-testnet] [-fund <source account seed>] <validator seed> <domain>');
}

console.log('This tool will help you prepare and submit a transaction to');
console.log('set the home domain for your Stellar validator.');

var args = process.argv.slice(2);

if (args.length == 0) {
    usage();
    return;
}

console.log('');
console.log('Parsing command line arguments');

// Whether to submit the transaction or not
var submitTx = true;

// Determine whether to show the XDR
var showXDR = false;

// The keys used to fund the validator's account
var clFundKeys = null;

// The keys for the validator
var clValidatorKeys = null;

// The network to which we will connect
var clNetwork = StellarSdk.Networks.PUBLIC;
var clServer = 'https://horizon.stellar.org';

while (args.length > 2) {
    if (args[0] == '-xdr') {
        showXDR = true;
        args.splice(0, 1);

        if (args.length == 0) {
            usage();
            return;
        }

        continue;
    }

    if (args[0] == '-nosubmit') {
        submitTx = false;
        showXDR = true;
        args.splice(0, 1);

        if (args.length == 0) {
            usage();
            return;
        }

        continue;
    }

    if (args[0] == '-testnet') {
        clNetwork = StellarSdk.Networks.TESTNET;
        clServer = 'https://horizon-testnet.stellar.org';
        args.splice(0, 1);

        if (args.length == 0) {
            usage();
            return;
        }

        continue;
    }

    if (args[0] == '-fund') {
        if (args.length < 2) {
            console.log('Error: -fund requires an argument');
            return;
        }

        try {
            clFundKeys = StellarSdk.Keypair.fromSecret(args[1]);
        } catch (e) {
            console.log('Error: Unable to parse funding account seed: ' + e);
            return;
        }

        args.splice(0, 2);
        continue;
    }

    usage();
    return;
}

if (args.length != 2) {
    usage();
    return;
}

try {
    clValidatorKeys = StellarSdk.Keypair.fromSecret(args[0]);

    if (clFundKeys == clValidatorKeys) {
        console.log('You are trying to fund an account from itself.');
        return;
    }
}
catch (e) {
    console.log('Error: Unable to parse funding account seed: ' + e);
    return;
}

console.log('');

(async () => {
    try {
        console.log('Connecting to ' + clServer);
        console.log('');

        const server = new StellarSdk.Server(clServer);

        console.log('Building transaction to set domain for ' + clValidatorKeys.publicKey() + '.');

        const account = await server.loadAccount(clFundKeys.publicKey());

        var builder = new StellarSdk.TransactionBuilder(account, {
            fee: 100,
            memo: StellarSdk.Memo.text('https://armajeddon.com/'),
            networkPassphrase: clNetwork
        });

        console.log('');
        console.log('The transaction will:');

        if (clFundKeys.publicKey() != clValidatorKeys.publicKey()) {
            console.log(' - Send 1 XLM from ' + clFundKeys.publicKey());
            console.log('   to fund a new account for the validator.');
            builder = builder.addOperation(StellarSdk.Operation.createAccount({
                destination: clValidatorKeys.publicKey(),
                startingBalance: '1'
            }))
        }

        console.log(' - Set the domain field to: \'' + args[1] + '\'.');

        builder = builder.addOperation(StellarSdk.Operation.setOptions({
            source: clValidatorKeys.publicKey(),
            homeDomain: args[1]
        }));

        var tx = builder.setTimeout(5).build();

        if (clFundKeys.publicKey() != clValidatorKeys.publicKey())
            tx.sign(clFundKeys);

        tx.sign(clValidatorKeys);

        if (showXDR) {
            console.log('');
            console.log('The XDR for the transaction is:');
            console.log(tx.toXDR());
        }

        if (submitTx) {
            console.log('');
            console.log('Submitting the transaction');

            const result = await server.submitTransaction(tx);

            console.log('');
            console.log('The transaction was successfully submitted.');
            console.log('See: ' + ._links.transaction.href);
        }
    }
    catch (e) {
        console.log('Error: An exception occured: ' + e);
    }
})();