@coolwallet/sol

CoolWallet Solana (SOL) SDK

Typescript library with support for the integration of Solana for third party application, include the functionalities of generation of addresses and signed transactions.

Install

npm i @coolwallet/sol

Usage

Normal transfer case, with sol token (native token on Solana)

import SOL from '@coolwallet/sol';
import { Connection, PublicKey, TOKEN_PROGRAM_ID, TOKEN_2022_PROGRAM_ID, ASSOCIATED_TOKEN_PROGRAM_ID } from '@solana/web3.js';
import base58 from 'bs58';

const connection = new Connection('https://api.mainnet-beta.solana.com', 'confirmed');
const address = await sol.getAddress(transport, appPrivateKey, appId, 0);
const recentBlockhash = (await connection.getRecentBlockhash()).blockhash;

const sol = new SOL();

const toPubkey = 'destination address';
const amount = 0.000001; // transfer amount

const transaction = {
  toPubkey,
  recentBlockhash,
  amount,
};

const appId = localStorage.getItem('appId');
if (!appId) throw new Error('No Appid stored, please register!');
const signedTx = await sol.signTransaction({
  transport,
  appPrivateKey,
  appId,
  transaction,
});
const recoveredTx = Transaction.from(signedTx);

const verifySig = recoveredTx.verifySignatures();

// signature need to be valid
if (!verifySig) throw new Error('Fail to verify signature');

return connection.sendRawTransaction(recoveredTx.serialize());

Other case we have similar workflow but using different input, following below:

// transfer spl token
const tokenInfo = {
  symbol: TOKEN_NAME,
  address: TOKEN_ADDRESS,
  decimals: TOKEN_DECIMALS,
};

const tx = {
  walletAddress,
  fromTokenAccount,
  toTokenAccount,
  recentBlockhash,
  amount: 0.1,
  tokenInfo,
};

// Get associateAccount address.
const [associateAccount] = await PublicKey.findProgramAddress(
  [base58.decode(address), TOKEN_PROGRAM_ID.toBuffer(), base58.decode(tokenInfo.address)],
  ASSOCIATED_TOKEN_PROGRAM_ID
);

// create associate token account
const tx = {
  owner: address,
  associateAccount,
  recentBlockhash,
  token: tokenInfo.address,
};

In construct, you can choose the chain you want to implement.

Methods

getAddress

Description

The address generated is compatible to BIP44 with account 0 by following BIP44 path:

m/44'/501'/0'

async getAddress(
    transport: Transport,
    appPrivateKey: string,
    appId: string
): Promise<string>

Arguments

Arg	Description	Type	Required
transport	Object to communicate with CoolWallet device	Transport	TRUE
appPrivateKey	Private key for the connected application	string	TRUE
appId	ID for the connected application	string	TRUE

signTransaction

Description

You can use either solana Transaction object to form a transaction with user input and run compileMessage() function to extract needed input for signing process or you can use our TransactionCreator class to generate automatically transaction instruction.

async signTransaction(signTxData: signTxType):Promise<string>

signTxType Arguments

Arg	Description	Type	Required
transport	Object to communicate with CoolWallet device	Transport	TRUE
appPrivateKey	Private key for the connected application	string	TRUE
appId	ID for the connected application	string	TRUE
transaction	Essential information/property for XLM Transaction	Object	TRUE
confirmCB	Callback of confirmation data to the connected application	Function	FALSE
authorizedCB	Callback of authorized transaction data to the connected application	Function	FALSE

If you don't want to use solana web3 js to extract needed input, use can pass in manually instructions data for transaction by yourself, following by this logic:

// user defined instruction
// associateProgramAccount is associate account with your account used for storing
// data of interacting process with solana smart contract (or user defined program).
const tx = {
  instructions: [
    {
      accounts: [{ pubkey: associateProgramAccount, isSigner: false, isWritable: true }],
      programId: programId,
      data: data,
    },
  ],
  recentBlockhash,
  feePayer: signer,
};

const signedTx = await sol.signTransaction({
  transport,
  appPrivateKey,
  appId,
  transaction,
});

const recoveredTx = Transaction.from(signedTx);

const verifySig = recoveredTx.verifySignatures();

// signature need to be valid
if (!verifySig) throw new Error('Fail to verify signature');

return connection.sendRawTransaction(recoveredTx.serialize());