@open-rights-exchange/orejs
Version:
Orejs is a Javascript helper library to provide simple high-level access to the ore-protocol. Orejs uses eosJS as a wrapper to the EOS blockchain.
108 lines • 6.17 kB
JavaScript
;
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 };
}
};
var fetch = require('node-fetch');
var hash = require('hash.js');
var ecc = require('eosjs-ecc');
// hash the parameter values to be sent to the verifier
function hashParams(params) {
var hashedParams = {};
Object.keys(params).map(function (key) {
hashedParams[key] = hash.sha256().update(params[key]).digest('hex');
});
return hashedParams;
}
// Call the Verifier to verify the client request and return an ore-access-token to access a particular right
function getAccessTokenFromVerifier(verifierEndpoint, instrument, right, hashedParams) {
return __awaiter(this, void 0, void 0, function () {
var errorTitle, errorMessage, result, signature, options, error, error_1, _a, endpoint, oreAccessToken, method, additionalParameters, accessTokenTimeout;
return __generator(this, function (_b) {
switch (_b.label) {
case 0: return [4 /*yield*/, this.sign(instrument.id)];
case 1:
signature = _b.sent();
options = {
method: 'POST',
body: JSON.stringify({
requestParams: hashedParams,
rightName: right.right_name,
signature: signature,
voucherId: instrument.id
}),
headers: {
'Content-Type': 'application/json'
}
};
_b.label = 2;
case 2:
_b.trys.push([2, 6, , 7]);
return [4 /*yield*/, fetch(verifierEndpoint + "/verify", options)];
case 3:
result = _b.sent();
if (!!result.ok) return [3 /*break*/, 5];
return [4 /*yield*/, result.json()];
case 4:
error = _b.sent();
throw new Error(error.message);
case 5: return [3 /*break*/, 7];
case 6:
error_1 = _b.sent();
errorTitle = 'Orejs Verifier Fetch Error';
throw new Error(errorTitle + ": " + error_1.message);
case 7: return [4 /*yield*/, result.json()];
case 8:
_a = _b.sent(), endpoint = _a.endpoint, oreAccessToken = _a.oreAccessToken, method = _a.method, additionalParameters = _a.additionalParameters, accessTokenTimeout = _a.accessTokenTimeout;
if (!oreAccessToken) {
errorTitle = 'Orejs Access Token Verification Error';
errorMessage = 'Verifier is unable to return an ORE access token. Make sure a valid instrument is passed to the verifier.';
throw new Error(errorTitle + ": " + errorMessage);
}
if (!endpoint) {
errorTitle = 'Orejs Access Right Verification Error';
errorMessage = 'Verifier is unable to find an endpoint for the right name passed in. Make sure to pass in the correct right name you want to access.';
throw new Error(errorTitle + ": " + errorMessage);
}
return [2 /*return*/, { endpoint: endpoint, oreAccessToken: oreAccessToken, method: method, additionalParameters: additionalParameters, accessTokenTimeout: accessTokenTimeout }];
}
});
});
}
module.exports = {
getAccessTokenFromVerifier: getAccessTokenFromVerifier,
hashParams: hashParams
};
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