@chronicleprotocol/api-auth/lib/utils.js

The API authenticaion library for Chronicle Protocol

import { bytesToHex, bytesToNumber, bytesToString, getAddress, numberToBytes, stringToBytes, } from "viem";
import { AUTH_TOKEN_SPEC } from "./constants.js";
export function ensure0xPrefix(str) {
    return str.startsWith("0x") ? str : ("0x" + str);
}
export function strip0xPrefix(str) {
    return str.replace(/^0x/, "");
}
export function authTokenMessageToBytes(message) {
    return Uint8Array.from([
        ...stringToBytes(message.description, {
            size: AUTH_TOKEN_SPEC.fieldSizes.description,
        }),
        ...numberToBytes(message.version, {
            size: AUTH_TOKEN_SPEC.fieldSizes.version,
        }),
        ...numberToBytes(message.validFrom, {
            size: AUTH_TOKEN_SPEC.fieldSizes.validFrom,
        }),
        ...numberToBytes(message.validTo, {
            size: AUTH_TOKEN_SPEC.fieldSizes.validTo,
        }),
        ...numberToBytes(BigInt(message.signer), {
            size: AUTH_TOKEN_SPEC.fieldSizes.signer,
        }),
        ...numberToBytes(message.nonce, { size: AUTH_TOKEN_SPEC.fieldSizes.nonce }),
    ]);
}
export function authTokenBytesToMessage(bytes) {
    let pointer = 0;
    return {
        description: bytesToString(bytes.slice(pointer, (pointer += AUTH_TOKEN_SPEC.fieldSizes.description))).replace(/\x00+$/, ""),
        version: bytesToNumber(bytes.slice(pointer, (pointer += AUTH_TOKEN_SPEC.fieldSizes.version))),
        validFrom: bytesToNumber(bytes.slice(pointer, (pointer += AUTH_TOKEN_SPEC.fieldSizes.validFrom))),
        validTo: bytesToNumber(bytes.slice(pointer, (pointer += AUTH_TOKEN_SPEC.fieldSizes.validTo))),
        signer: getAddress(bytesToHex(bytes.slice(pointer, (pointer += AUTH_TOKEN_SPEC.fieldSizes.signer)))),
        nonce: bytesToNumber(bytes.slice(pointer, (pointer += AUTH_TOKEN_SPEC.fieldSizes.nonce))),
    };
}