virto-signer
Version:
A signer for constructing a signed extrinsic using Pass-provided authenticators
127 lines (126 loc) • 7.22 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
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return g.next = verb(0), g["throw"] = verb(1), g["return"] = verb(2), typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
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}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PassSigner = void 0;
var scale_ts_1 = require("scale-ts");
var blake2b_1 = __importDefault(require("blake2b"));
var utils_ts_1 = require("./utils.js");
var utils_1 = require("@polkadot-api/utils");
var UncheckedExtrinsic = (0, scale_ts_1.Struct)({
version: scale_ts_1.u8,
prelude: (0, scale_ts_1.Struct)({
extensionVersion: scale_ts_1.u8,
extensions: (0, scale_ts_1.Bytes)(),
}),
call: (0, scale_ts_1.Bytes)(),
});
var PassAuthenticate = (0, scale_ts_1.Option)((0, scale_ts_1.Struct)({
deviceId: (0, scale_ts_1.Bytes)(),
credentials: (0, scale_ts_1.Bytes)(),
}));
var EXTRINSIC_V5 = 5;
var EXTRINSIC_FORMAT_GENERAL = 64;
var PassSigner = /** @class */ (function () {
function PassSigner(authenticator) {
this.authenticator = authenticator;
this.publicKey = (0, blake2b_1.default)(32)
.update((0, utils_1.mergeUint8)(authenticator.hashedUserId, authenticator.hashedUserId))
.digest();
}
PassSigner.prototype.signTx = function (call, signedExtensions, encodedMetadata, atBlockNumber, hasher) {
return __awaiter(this, void 0, void 0, function () {
var metadata, context, hasherFn, extensions;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
metadata = (0, utils_ts_1.getTypedMetadata)(encodedMetadata);
context = scale_ts_1.u64.enc(BigInt(atBlockNumber));
hasherFn = hasher !== null && hasher !== void 0 ? hasher : (function (data) { return (0, blake2b_1.default)(32).update(data).digest(); });
return [4 /*yield*/, Promise.all(metadata.extrinsic.signedExtensions.map(function (_a) { return __awaiter(_this, [_a], void 0, function (_b) {
var signedExtension, _c, _d, _e;
var _f;
var identifier = _b.identifier;
return __generator(this, function (_g) {
switch (_g.label) {
case 0:
signedExtension = signedExtensions[identifier];
if (!signedExtension)
throw new Error("Missing ".concat(identifier, " signed extension"));
if (!(identifier === "PassAuthenticate")) return [3 /*break*/, 2];
_c = signedExtensions[identifier];
_e = (_d = PassAuthenticate).enc;
_f = {
deviceId: this.authenticator.deviceId
};
return [4 /*yield*/, this.authenticator.credentials(hasherFn(context))];
case 1:
_c.value = _e.apply(_d, [(_f.credentials = _g.sent(),
_f)]);
_g.label = 2;
case 2: return [2 /*return*/, signedExtension.value];
}
});
}); }))];
case 1:
extensions = _a.sent();
return [2 /*return*/, UncheckedExtrinsic.enc({
version: EXTRINSIC_V5 | EXTRINSIC_FORMAT_GENERAL,
prelude: {
extensionVersion: 0,
extensions: utils_1.mergeUint8.apply(void 0, extensions),
},
call: call,
})];
}
});
});
};
PassSigner.prototype.signBytes = function (_) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
throw new Error("signBytes not implemented");
});
});
};
return PassSigner;
}());
exports.PassSigner = PassSigner;