@sphereon/ssi-sdk-web3.headless-provider/dist/index.cjs

"use strict";
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from2, except, desc) => {
  if (from2 && typeof from2 === "object" || typeof from2 === "function") {
    for (let key of __getOwnPropNames(from2))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from2[key], enumerable: !(desc = __getOwnPropDesc(from2, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/index.ts
var index_exports = {};
__export(index_exports, {
  EthersHeadlessProvider: () => EthersHeadlessProvider,
  EthersKMSSigner: () => EthersKMSSigner,
  EthersKMSSignerBuilder: () => EthersKMSSignerBuilder,
  EventEmitter: () => EventEmitter,
  Web3Method: () => Web3Method,
  createRpcServer: () => createRpcServer,
  createService: () => createService,
  createServiceMethod: () => createServiceMethod,
  createWeb3Provider: () => createWeb3Provider,
  getAddressFromAgent: () => getAddressFromAgent,
  getKey: () => getKey,
  without: () => without
});
module.exports = __toCommonJS(index_exports);

// src/types.ts
var Web3Method = /* @__PURE__ */ (function(Web3Method2) {
  Web3Method2["RequestAccounts"] = "eth_requestAccounts";
  Web3Method2["Accounts"] = "eth_accounts";
  Web3Method2["SendTransaction"] = "eth_sendTransaction";
  Web3Method2["SwitchEthereumChain"] = "wallet_switchEthereumChain";
  Web3Method2["AddEthereumChain"] = "wallet_addEthereumChain";
  Web3Method2["SignMessage"] = "personal_sign";
  Web3Method2["SignTypedData"] = "eth_signTypedData";
  Web3Method2["SignTypedDataV1"] = "eth_signTypedData_v1";
  Web3Method2["SignTypedDataV3"] = "eth_signTypedData_v3";
  Web3Method2["SignTypedDataV4"] = "eth_signTypedData_v4";
  return Web3Method2;
})({});
function without(list, item) {
  const idx = list.indexOf(item);
  if (idx >= 0) {
    return list.slice(0, idx).concat(list.slice(idx + 1));
  }
  return list;
}
__name(without, "without");

// src/ethers-headless-provider.ts
var import_strings = require("@ethersproject/strings");
var import_eth_sig_util = require("@metamask/eth-sig-util");
var import_strict = __toESM(require("assert/strict"), 1);
var import_ethers = require("ethers");
var import_rxjs = require("rxjs");

// src/errors.ts
var ErrorWithCode = class extends Error {
  static {
    __name(this, "ErrorWithCode");
  }
  code;
  constructor(message, code) {
    super(message), this.code = code;
    return this;
  }
};
var Deny = /* @__PURE__ */ __name(() => new ErrorWithCode("The user rejected the request.", 4001), "Deny");
var Unauthorized = /* @__PURE__ */ __name(() => new ErrorWithCode("The requested method and/or account has not been authorized by the user.", 4100), "Unauthorized");
var Disconnected = /* @__PURE__ */ __name(() => new ErrorWithCode("The Provider is disconnected from all chains.", 4900), "Disconnected");
var UnrecognizedChainID = /* @__PURE__ */ __name(() => new ErrorWithCode("Unrecognized chain ID. Try adding the chain using `wallet_addEthereumChain` first.", 4902), "UnrecognizedChainID");

// src/event-emitter.ts
var EventEmitter = class {
  static {
    __name(this, "EventEmitter");
  }
  listeners = /* @__PURE__ */ Object.create(null);
  emit(eventName, ...args) {
    this.listeners[eventName]?.forEach((listener) => {
      listener(...args);
    });
    return true;
  }
  on(eventName, listener) {
    this.listeners[eventName] ??= [];
    this.listeners[eventName]?.push(listener);
    return this;
  }
  off(eventName, listener) {
    const listeners = this.listeners[eventName] ?? [];
    for (const [i, listener_] of listeners.entries()) {
      if (listener === listener_) {
        listeners.splice(i, 1);
        break;
      }
    }
    return this;
  }
  once(eventName, listener) {
    const cb = /* @__PURE__ */ __name((...args) => {
      this.off(eventName, cb);
      listener(...args);
    }, "cb");
    return this.on(eventName, cb);
  }
};

// src/ethers-headless-provider.ts
var EthersHeadlessProvider = class extends EventEmitter {
  static {
    __name(this, "EthersHeadlessProvider");
  }
  chains;
  _pendingRequests = new import_rxjs.BehaviorSubject([]);
  _signers = [];
  _activeChainId;
  _rpc = {};
  _config;
  _authorizedRequests = {};
  constructor(signers, chains, config = {}) {
    super(), this.chains = chains;
    this._signers = signers;
    this._activeChainId = chains[0].chainId;
    this._config = Object.assign({
      debug: true,
      logger: console.log
    }, config);
  }
  async request({ method, params }) {
    if (this._config.debug) {
      this._config.logger(JSON.stringify({
        method,
        params
      }));
    }
    switch (method) {
      case "eth_call":
      case "eth_getBalance":
      case "eth_estimateGas":
      case "eth_blockNumber":
      case "eth_getBlockByNumber":
      case "eth_getTransactionByHash":
      case "eth_getTransactionReceipt":
      case "eth_feeHistory":
        return this.getRpc().send(method, params);
      case "eth_requestAccounts":
      case "eth_accounts":
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const { chainId } = this.getCurrentChain();
          this.emit("connect", {
            chainId
          });
          return Promise.all(this._signers.map((wallet) => wallet.getAddress()));
        }, true, "eth_requestAccounts");
      case "eth_chainId": {
        const { chainId } = this.getCurrentChain();
        return "0x" + chainId.toString(16);
      }
      case "net_version": {
        const { chainId } = this.getCurrentChain();
        return "" + chainId;
      }
      case "eth_sendTransaction": {
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const wallet = this.getCurrentWallet();
          const rpc = this.getRpc();
          const { gas, from: from2, ...txRequest } = params[0];
          const tx = await wallet.connect(rpc).sendTransaction(txRequest);
          return tx.hash;
        });
      }
      case "eth_sign": {
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const wallet = this.getCurrentWallet();
          const rpc = this.getRpc();
          const message = params[1];
          return await wallet.connect(rpc).signMessage(message);
        });
      }
      case "wallet_addEthereumChain": {
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const chainId = Number(params[0].chainId);
          const { rpcUrl } = params[0];
          this.addNetwork(chainId, rpcUrl);
          return null;
        });
      }
      case "wallet_switchEthereumChain": {
        if (this._activeChainId === Number(params[0].chainId)) {
          return null;
        }
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const chainId = Number(params[0].chainId);
          this.switchNetwork(chainId);
          return null;
        });
      }
      case "personal_sign": {
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const wallet = this.getCurrentWallet();
          const address = await wallet.getAddress();
          import_strict.default.equal(address, import_ethers.ethers.utils.getAddress(params[1]));
          const message = (0, import_strings.toUtf8String)(params[0]);
          const signature = await wallet.signMessage(message);
          if (this._config.debug) {
            this._config.logger("personal_sign", {
              message,
              signature
            });
          }
          return signature;
        });
      }
      case "eth_signTypedData":
      case "eth_signTypedData_v1": {
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const wallet = this.getCurrentWallet();
          const address = await wallet.getAddress();
          import_strict.default.equal(address, import_ethers.ethers.utils.getAddress(params[1]));
          const msgParams = params[0];
          return (0, import_eth_sig_util.signTypedData)({
            privateKey: Buffer.from(wallet.privateKey.slice(2), "hex"),
            data: msgParams,
            version: import_eth_sig_util.SignTypedDataVersion.V1
          });
        });
      }
      case "eth_signTypedData_v3":
      case "eth_signTypedData_v4": {
        return this.waitAuthorization({
          method,
          params
        }, async () => {
          const wallet = this.getCurrentWallet();
          const address = await wallet.getAddress();
          import_strict.default.equal(address, import_ethers.ethers.utils.getAddress(params[0]));
          const msgParams = JSON.parse(params[1]);
          return (0, import_eth_sig_util.signTypedData)({
            privateKey: Buffer.from(wallet.privateKey.slice(2), "hex"),
            data: msgParams,
            version: method === "eth_signTypedData_v4" ? import_eth_sig_util.SignTypedDataVersion.V4 : import_eth_sig_util.SignTypedDataVersion.V3
          });
        });
      }
      default:
        return this.getRpc().send(method, params);
    }
  }
  getCurrentWallet() {
    const wallet = this._signers[0];
    if (!wallet) {
      throw Unauthorized();
    }
    return wallet;
  }
  waitAuthorization(requestInfo, task, permanentPermission = false, methodOverride) {
    const method = methodOverride ?? requestInfo.method;
    if (this._authorizedRequests[method]) {
      return task();
    }
    return new Promise((resolve, reject) => {
      const pendingRequest = {
        requestInfo,
        authorize: /* @__PURE__ */ __name(async () => {
          if (permanentPermission) {
            this._authorizedRequests[method] = true;
          }
          resolve(await task());
        }, "authorize"),
        reject(err) {
          reject(err);
        }
      };
      this._pendingRequests.next(this._pendingRequests.getValue().concat(pendingRequest));
    });
  }
  consumeRequest(requestKind) {
    return (0, import_rxjs.firstValueFrom)(this._pendingRequests.pipe((0, import_rxjs.switchMap)((a) => (0, import_rxjs.from)(a)), (0, import_rxjs.filter)((request) => {
      return request.requestInfo.method === requestKind;
    }), (0, import_rxjs.first)(), (0, import_rxjs.tap)((item) => {
      this._pendingRequests.next(without(this._pendingRequests.getValue(), item));
    })));
  }
  consumeAllRequests() {
    const pendingRequests = this._pendingRequests.getValue();
    this._pendingRequests.next([]);
    return pendingRequests;
  }
  getPendingRequests() {
    return this._pendingRequests.getValue().map((pendingRequest) => pendingRequest.requestInfo);
  }
  getPendingRequestCount(requestKind) {
    const pendingRequests = this._pendingRequests.getValue();
    if (!requestKind) {
      return pendingRequests.length;
    }
    return pendingRequests.filter((pendingRequest) => pendingRequest.requestInfo.method === requestKind).length;
  }
  async authorize(requestKind) {
    const pendingRequest = await this.consumeRequest(requestKind);
    return pendingRequest.authorize();
  }
  async reject(requestKind, reason = Deny()) {
    const pendingRequest = await this.consumeRequest(requestKind);
    return pendingRequest.reject(reason);
  }
  authorizeAll() {
    this.consumeAllRequests().forEach((request) => request.authorize());
  }
  rejectAll(reason = Deny()) {
    this.consumeAllRequests().forEach((request) => request.reject(reason));
  }
  async changeAccounts(signers) {
    this._signers = signers;
    this.emit("accountsChanged", await Promise.all(this._signers.map((signer) => signer.getAddress())));
  }
  getCurrentChain() {
    const chainConn = this.chains.find((chainConn2) => chainConn2.chainId === this._activeChainId);
    if (!chainConn) {
      throw Disconnected();
    }
    return chainConn;
  }
  getRpc() {
    const chainConn = this.getCurrentChain();
    let rpc = this._rpc[chainConn.chainId];
    if (!rpc) {
      rpc = new import_ethers.ethers.providers.JsonRpcProvider(chainConn.rpcUrl, chainConn.chainId);
      this._rpc[chainConn.chainId] = rpc;
    }
    return rpc;
  }
  getNetwork() {
    return this.getCurrentChain();
  }
  getNetworks() {
    return this.chains;
  }
  addNetwork(chainId, rpcUrl) {
    this.chains.push({
      chainId,
      rpcUrl
    });
  }
  switchNetwork(chainId) {
    const idx = this.chains.findIndex((connection) => connection.chainId === chainId);
    if (idx < 0) {
      throw UnrecognizedChainID();
    }
    if (chainId !== this._activeChainId) {
      this._activeChainId = chainId;
      this.emit("chainChanged", chainId);
    }
  }
};

// src/ethers-kms-signer.ts
var import_transactions = require("@ethersproject/transactions");
var import_ethers3 = require("ethers");
var import_utils = require("ethers/lib/utils");
var import_from_string = require("uint8arrays/from-string");

// src/functions.ts
var import_ethers2 = require("ethers");
async function getAddressFromAgent(context, keyRef) {
  const publicKeyHex = await getKey(context, keyRef).then((key) => key?.publicKeyHex);
  if (!publicKeyHex) {
    throw Error(`Could not retrieve public hex key for ${keyRef}`);
  }
  const address = import_ethers2.ethers.utils.computeAddress(`${publicKeyHex.startsWith("0x") ? "" : "0x"}${publicKeyHex}`);
  if (!address || !address.startsWith("0x")) {
    throw Error(`Invalid address ${address} public key for key ${publicKeyHex}`);
  }
  return address;
}
__name(getAddressFromAgent, "getAddressFromAgent");
async function getKey(context, keyRef) {
  return await context.agent.keyManagerGet({
    kid: keyRef.kid
  });
}
__name(getKey, "getKey");

// src/ethers-kms-signer.ts
var EthersKMSSignerBuilder = class {
  static {
    __name(this, "EthersKMSSignerBuilder");
  }
  context;
  keyRef;
  provider;
  withContext(context) {
    this.context = context;
    return this;
  }
  withKid(kid) {
    this.keyRef = {
      kid
    };
    return this;
  }
  withKeyRef(keyRef) {
    if (typeof keyRef === "string") {
      return this.withKid(keyRef);
    }
    this.keyRef = keyRef;
    return this;
  }
  withProvider(provider) {
    this.provider = provider;
    return this;
  }
  build() {
    if (!this.context) {
      throw Error("Agent context needs to be provided");
    }
    if (!this.keyRef) {
      throw Error("Keyref needs to be provided");
    }
    return new EthersKMSSigner({
      context: this.context,
      keyRef: this.keyRef,
      provider: this.provider
    });
  }
};
var EthersKMSSigner = class _EthersKMSSigner extends import_ethers3.Signer {
  static {
    __name(this, "EthersKMSSigner");
  }
  context;
  keyRef;
  constructor({ provider, context, keyRef }) {
    super();
    (0, import_utils.defineReadOnly)(this, "provider", provider || void 0);
    this.context = context;
    this.keyRef = keyRef;
  }
  async getAddress() {
    return await getAddressFromAgent(this.context, this.keyRef);
  }
  async signTransaction(transaction) {
    const { from: from2, ...tx } = await transaction;
    return this.context.agent.keyManagerSign({
      algorithm: "eth_signTransaction",
      keyRef: this.keyRef.kid,
      // keyRef: this.keyRef,
      // @ts-ignore
      data: (0, import_utils.arrayify)((0, import_transactions.serialize)(tx))
    });
  }
  async signRaw(message) {
    return await this.context.agent.keyManagerSign({
      algorithm: "eth_rawSign",
      keyRef: this.keyRef.kid,
      encoding: "base16",
      // @ts-ignore // KMS accepts uint8arrays but interface does not expose it
      data: message
    });
  }
  async signMessage(message) {
    return await this.context.agent.keyManagerSign({
      algorithm: "eth_signMessage",
      keyRef: this.keyRef.kid,
      encoding: "base16",
      // @ts-ignore // KMS accepts uint8arrays but interface does not expose it
      data: message
    });
  }
  async _signTypedData(domain, types, value) {
    const jsonData = {
      domain,
      types,
      message: value
    };
    return this.context.agent.keyManagerSign({
      algorithm: "eth_signTypedData",
      keyRef: this.keyRef.kid,
      // @ts-ignore // KMS accepts uint8arrays but interface does not expose it
      data: (0, import_from_string.fromString)(JSON.stringify(jsonData))
    });
  }
  connect(provider) {
    return new _EthersKMSSigner({
      provider,
      context: this.context,
      keyRef: this.keyRef
    });
  }
};

// src/factory.ts
function relayEvents(eventEmitter, execute) {
  const emit_ = eventEmitter.emit;
  eventEmitter.emit = (eventName, ...args) => {
    void execute("emit", eventName, ...args);
    return emit_.apply(eventEmitter, [
      eventName,
      ...args
    ]);
  };
}
__name(relayEvents, "relayEvents");
function createWeb3Provider(signers, chainId, rpcUrl, evaluate = async () => {
}, config) {
  const chainIds = Array.isArray(chainId) ? chainId : [
    chainId
  ];
  const chains = chainIds.map((chainId2) => {
    return {
      chainId: chainId2,
      rpcUrl
    };
  });
  const web3Provider = new EthersHeadlessProvider(signers, chains, config);
  relayEvents(web3Provider, evaluate);
  return web3Provider;
}
__name(createWeb3Provider, "createWeb3Provider");

// src/rpc-server.ts
var import_ssi_express_support = require("@sphereon/ssi-express-support");
var import_express = require("express");
function createRpcServer(provider, expressSupport, opts) {
  const express = expressSupport.express;
  const router = (0, import_express.Router)();
  const path = opts?.path ?? "/web3/rpc";
  console.log(`RPC server will use basePath ${opts?.basePath ?? "/"} and path ${path}`);
  router.post(path, (req, res, next) => {
    console.log(`REQ ${req.body?.method}:\r
${JSON.stringify(req.body, null, 2)}\r
===`);
    next();
  }, async (req, res, next) => {
    try {
      const method = req.body.method;
      const params = req.body.params;
      const id = req.body.id;
      if (req.body.jsonrpc !== "2.0") {
        console.log("No valid JSON RPC call received", JSON.stringify(req.body));
        return (0, import_ssi_express_support.sendErrorResponse)(res, 200, {
          id: req.body.id,
          jsonrpc: "2.0",
          error: "No valid JSON RPC call received. No jsonrp version supplied",
          code: -32600
        });
      } else if (!id || !method) {
        console.log("No valid JSON RPC call received", JSON.stringify(req.body));
        return (0, import_ssi_express_support.sendErrorResponse)(res, 200, {
          id: req.body.id,
          jsonrpc: "2.0",
          error: "No valid JSON RPC call received",
          code: -32600
        });
      }
      const result = provider.request({
        method,
        params
      });
      provider.authorizeAll();
      const respBody = {
        id,
        jsonrpc: "2.0",
        result: await result
      };
      res.json(respBody);
      console.log(`RESPONSE for ${method}:\r
${JSON.stringify(respBody, null, 2)}`);
    } catch (error) {
      console.log(error.message);
      let msg = error.message;
      if (`body` in error) {
        msg = error.body;
        return (0, import_ssi_express_support.sendErrorResponse)(res, 200, msg);
      } else {
        return (0, import_ssi_express_support.sendErrorResponse)(res, 200, {
          id: req.body.id,
          jsonrpc: "2.0",
          error: msg,
          code: error.code ?? -32e3
        });
      }
    }
    return next();
  });
  express.use(opts?.basePath ?? "", router);
}
__name(createRpcServer, "createRpcServer");
function createServiceMethod(method, service, provider) {
  service[method] = async (params) => {
    const result = provider.request({
      method,
      params
    });
    provider.authorizeAll();
    return await result;
  };
}
__name(createServiceMethod, "createServiceMethod");
function createService(provider) {
  const service = {};
  for (const method of Object.values(Web3Method)) {
    createServiceMethod(method, service, provider);
  }
  return service;
}
__name(createService, "createService");
//# sourceMappingURL=index.cjs.map