@lit-protocol/auth-helpers/src/lib/generate-auth-sig.js

This submodule manages permissions and capabilities related to accessing specific resources on the blockchain. It utilizes features from the 'siwe' and 'siwe-recap' libraries to verify and handle data, allowing users to encode and decode session capabilit

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.generateAuthSigWithViem = exports.generateAuthSig = void 0;
const ethers_1 = require("ethers");
const constants_1 = require("@lit-protocol/constants");
/**
 * Generate an AuthSig object using the signer.
 *
 * For more context:
 * We are only using authSig to generate session sigs. In a newer version, we will stop accepting
 * authSig all together from the node and will only accept session sigs. The address being
 * used here will be checksummed.
 *
 * @param signer the signer must have a "signMessage" method
 * @param toSign - the message to sign
 * @param address - (optional) the address of the signer
 * @returns
 */
const generateAuthSig = async ({ signer, toSign, address, algo, }) => {
    if (!signer?.signMessage) {
        throw new constants_1.InvalidArgumentException({
            info: {
                signer,
                address,
                algo,
            },
        }, 'signer does not have a signMessage method');
    }
    const signature = await signer.signMessage(toSign);
    // If address is not provided, derive it from the signer
    if (!address) {
        address = await signer.getAddress();
    }
    // checksum the address
    address = ethers_1.ethers.utils.getAddress(address);
    // If address is still not available, throw an error
    if (!address) {
        throw new constants_1.InvalidArgumentException({
            info: {
                signer,
                address,
                algo,
            },
        }, 'address is required');
    }
    return {
        sig: signature,
        derivedVia: 'web3.eth.personal.sign',
        signedMessage: toSign,
        address: address,
        ...(algo && { algo }),
    };
};
exports.generateAuthSig = generateAuthSig;
const generateAuthSigWithViem = async ({ account, toSign, algo, address, }) => {
    if (typeof account.signMessage !== 'function') {
        throw new constants_1.InvalidArgumentException({ info: { account, algo } }, 'account does not have a signMessage method');
    }
    // @ts-ignore - TODO: fix this.
    const signature = await account.signMessage({ message: toSign });
    // const _address = address || getAddress(account.address);
    if (!address) {
        throw new constants_1.InvalidArgumentException({ info: { account, address, algo } }, 'address is required');
    }
    return {
        sig: signature,
        derivedVia: 'web3.eth.personal.sign',
        signedMessage: toSign,
        address,
        ...(algo && { algo }),
    };
    // if ('account' in account && account.account?.type === 'json-rpc') {
    //   const walletClient = account as WalletClient;
    //   const signature = await walletClient.signMessage({ message: toSign, account: walletClient.account! });
    //   const address = getAddress(walletClient.account!.address);
    //   console.log("xxx address:", address);
    //   if (!address) {
    //     throw new InvalidArgumentException(
    //       { info: { account, address, algo } },
    //       'address is required'
    //     );
    //   }
    //   return {
    //     sig: signature,
    //     derivedVia: 'web3.eth.personal.sign',
    //     signedMessage: toSign,
    //     address,
    //     ...(algo && { algo }),
    //   };
    // } else {
    // }
};
exports.generateAuthSigWithViem = generateAuthSigWithViem;
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