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Текущая директория: /opt/BitGoJS/node_modules/@celo/contractkit/lib/identity/claims
Просмотр файла: verify.js
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "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) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.verifyDomainRecord = exports.verifyAccountClaim = exports.verifyClaim = void 0;
var address_1 = require("@celo/base/lib/address");
var io_1 = require("@celo/base/lib/io");
var dns_1 = require("dns");
var util_1 = require("util");
var metadata_1 = require("../metadata");
var claim_1 = require("./claim");
var keybase_1 = require("./keybase");
var types_1 = require("./types");
/**
* Verifies a claim made by an account, i.e. whether a claim can be verified to be correct
* @param kit ContractKit object
* @param claim The claim to verify
* @param address The address that is making the claim
* @returns If valid, returns undefined. If invalid or unable to verify, returns a string with the error
*/
function verifyClaim(kit, claim, address, tries) {
if (tries === void 0) { tries = 3; }
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (claim.type) {
case types_1.ClaimTypes.KEYBASE:
return [2 /*return*/, (0, keybase_1.verifyKeybaseClaim)(kit, claim, address)];
case types_1.ClaimTypes.ACCOUNT:
return [2 /*return*/, (0, exports.verifyAccountClaim)(kit, claim, address, tries)];
case types_1.ClaimTypes.DOMAIN:
return [2 /*return*/, (0, exports.verifyDomainRecord)(kit, claim, address)];
default:
break;
}
return [2 /*return*/];
});
});
}
exports.verifyClaim = verifyClaim;
var verifyAccountClaim = function (kit, claim, address, tries) {
if (tries === void 0) { tries = 3; }
return __awaiter(void 0, void 0, void 0, function () {
var metadataURL, metadata, _a, _b, error_1, accountClaims;
return __generator(this, function (_c) {
switch (_c.label) {
case 0: return [4 /*yield*/, kit.contracts.getAccounts()];
case 1: return [4 /*yield*/, (_c.sent()).getMetadataURL(claim.address)];
case 2:
metadataURL = _c.sent();
if (!(0, io_1.isValidUrl)(metadataURL)) {
return [2 /*return*/, "Metadata URL of ".concat(claim.address, " could not be retrieved")];
}
_c.label = 3;
case 3:
_c.trys.push([3, 6, , 7]);
_b = (_a = metadata_1.IdentityMetadataWrapper).fetchFromURL;
return [4 /*yield*/, kit.contracts.getAccounts()];
case 4: return [4 /*yield*/, _b.apply(_a, [_c.sent(), metadataURL,
tries])];
case 5:
metadata = _c.sent();
return [3 /*break*/, 7];
case 6:
error_1 = _c.sent();
return [2 /*return*/, "Metadata could not be fetched for ".concat(claim.address, " at ").concat(metadataURL, ": ").concat(error_1.toString())];
case 7:
accountClaims = metadata.filterClaims(types_1.ClaimTypes.ACCOUNT);
if (accountClaims.find(function (x) { return (0, address_1.eqAddress)(x.address, address); }) === undefined) {
return [2 /*return*/, "".concat(claim.address, " did not claim ").concat(address)];
}
return [2 /*return*/];
}
});
});
};
exports.verifyAccountClaim = verifyAccountClaim;
/**
* It verifies if a DNS domain includes in the TXT records an entry with name
* `celo-site-verification` and a valid signature in base64
*/
var verifyDomainRecord = function (kit, claim, address, dnsResolver) {
if (dnsResolver === void 0) { dnsResolver = dns_1.resolveTxt; }
return __awaiter(void 0, void 0, void 0, function () {
var getRecords, domainRecords, _i, domainRecords_1, record, _a, record_1, entry, signatureBase64, signature, _b, _c, error_2;
return __generator(this, function (_d) {
switch (_d.label) {
case 0:
_d.trys.push([0, 9, , 10]);
getRecords = (0, util_1.promisify)(dnsResolver);
return [4 /*yield*/, getRecords(claim.domain)];
case 1:
domainRecords = _d.sent();
_i = 0, domainRecords_1 = domainRecords;
_d.label = 2;
case 2:
if (!(_i < domainRecords_1.length)) return [3 /*break*/, 8];
record = domainRecords_1[_i];
_a = 0, record_1 = record;
_d.label = 3;
case 3:
if (!(_a < record_1.length)) return [3 /*break*/, 7];
entry = record_1[_a];
if (!entry.startsWith(claim_1.DOMAIN_TXT_HEADER)) return [3 /*break*/, 6];
signatureBase64 = entry.substring(claim_1.DOMAIN_TXT_HEADER.length + 1);
signature = Buffer.from(signatureBase64, 'base64').toString('binary');
_c = (_b = metadata_1.IdentityMetadataWrapper).verifySignerForAddress;
return [4 /*yield*/, kit.contracts.getAccounts()];
case 4: return [4 /*yield*/, _c.apply(_b, [_d.sent(), (0, claim_1.serializeClaim)(claim),
signature,
address])];
case 5:
if (_d.sent()) {
return [2 /*return*/];
}
_d.label = 6;
case 6:
_a++;
return [3 /*break*/, 3];
case 7:
_i++;
return [3 /*break*/, 2];
case 8: return [2 /*return*/, "Unable to verify domain claim with address ".concat(address)];
case 9:
error_2 = _d.sent();
return [2 /*return*/, "Unable to fetch domain TXT records: ".concat(error_2.toString())];
case 10: return [2 /*return*/];
}
});
});
};
exports.verifyDomainRecord = verifyDomainRecord;
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