@opendatalabs/vana-sdk
Version:
A TypeScript library for interacting with Vana Network smart contracts.
70 lines • 2.69 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var web3_signed_builder_exports = {};
__export(web3_signed_builder_exports, {
buildWeb3SignedHeader: () => buildWeb3SignedHeader,
computeBodyHash: () => computeBodyHash
});
module.exports = __toCommonJS(web3_signed_builder_exports);
var import_sha2 = require("@noble/hashes/sha2");
var import_viem = require("viem");
var import_encoding = require("../utils/encoding");
const EMPTY_BODY_HASH = "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
const DEFAULT_TTL_SECONDS = 300;
function base64urlEncode(input) {
return (0, import_encoding.toBase64)(input).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
}
function computeBodyHash(body) {
if (!body || body.length === 0) {
return EMPTY_BODY_HASH;
}
const digest = (0, import_sha2.sha256)(body);
return `sha256:${(0, import_viem.bytesToHex)(digest).slice(2)}`;
}
async function buildWeb3SignedHeader(params) {
const now = Math.floor(Date.now() / 1e3);
const iat = params.iat ?? now;
const exp = params.exp ?? iat + DEFAULT_TTL_SECONDS;
const payload = {
aud: params.aud,
bodyHash: params.bodyHash ?? computeBodyHash(params.body),
exp,
iat,
method: params.method,
uri: params.uri
};
if (params.grantId !== void 0) {
payload["grantId"] = params.grantId;
}
const sortedPayload = Object.keys(payload).sort().reduce((acc, key) => {
acc[key] = payload[key];
return acc;
}, {});
const payloadJson = JSON.stringify(sortedPayload);
const payloadBytes = new TextEncoder().encode(payloadJson);
const payloadBase64 = base64urlEncode(payloadBytes);
const signature = await params.signMessage(payloadBase64);
return `Web3Signed ${payloadBase64}.${signature}`;
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
buildWeb3SignedHeader,
computeBodyHash
});
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