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import { web3Factory } from '@0xproject/dev-utils';
import { JSONRPCErrorCallback, JSONRPCRequestPayload } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import * as _ from 'lodash';
import 'mocha';
import * as Sinon from 'sinon';
import { generatePseudoRandomSalt, isValidOrderHash, isValidSignature, signOrderHashAsync } from '../src';
import * as signatureUtils from '../src/signature_utils';
import { chaiSetup } from './utils/chai_setup';
import { provider, web3Wrapper } from './utils/web3_wrapper';
chaiSetup.configure();
const expect = chai.expect;
const SHOULD_ADD_PERSONAL_MESSAGE_PREFIX = false;
describe('Signature utils', () => {
describe('#isValidSignature', () => {
// The Exchange smart contract `isValidSignature` method only validates orderHashes and assumes
// the length of the data is exactly 32 bytes. Thus for these tests, we use data of this size.
const dataHex = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0';
const signature = {
v: 27,
r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
};
const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631';
it("should return false if the data doesn't pertain to the signature & address", async () => {
expect(isValidSignature('0x0', signature, address)).to.be.false();
});
it("should return false if the address doesn't pertain to the signature & data", async () => {
const validUnrelatedAddress = '0x8b0292b11a196601ed2ce54b665cafeca0347d42';
expect(isValidSignature(dataHex, signature, validUnrelatedAddress)).to.be.false();
});
it("should return false if the signature doesn't pertain to the dataHex & address", async () => {
const wrongSignature = _.assign({}, signature, { v: 28 });
expect(isValidSignature(dataHex, wrongSignature, address)).to.be.false();
});
it('should return true if the signature does pertain to the dataHex & address', async () => {
const isValidSignatureLocal = isValidSignature(dataHex, signature, address);
expect(isValidSignatureLocal).to.be.true();
});
});
describe('#generateSalt', () => {
it('generates different salts', () => {
const equal = generatePseudoRandomSalt().eq(generatePseudoRandomSalt());
expect(equal).to.be.false();
});
it('generates salt in range [0..2^256)', () => {
const salt = generatePseudoRandomSalt();
expect(salt.greaterThanOrEqualTo(0)).to.be.true();
const twoPow256 = new BigNumber(2).pow(256);
expect(salt.lessThan(twoPow256)).to.be.true();
});
});
describe('#isValidOrderHash', () => {
it('returns false if the value is not a hex string', () => {
const isValid = isValidOrderHash('not a hex');
expect(isValid).to.be.false();
});
it('returns false if the length is wrong', () => {
const isValid = isValidOrderHash('0xdeadbeef');
expect(isValid).to.be.false();
});
it('returns true if order hash is correct', () => {
const isValid = isValidOrderHash('0x' + Array(65).join('0'));
expect(isValid).to.be.true();
});
});
describe('#signOrderHashAsync', () => {
let stubs: Sinon.SinonStub[] = [];
let makerAddress: string;
before(async () => {
const availableAddreses = await web3Wrapper.getAvailableAddressesAsync();
makerAddress = availableAddreses[0];
});
afterEach(() => {
// clean up any stubs after the test has completed
_.each(stubs, s => s.restore());
stubs = [];
});
it('Should return the correct ECSignature', async () => {
const orderHash = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0';
const expectedECSignature = {
v: 27,
r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
};
const ecSignature = await signOrderHashAsync(
provider,
orderHash,
makerAddress,
SHOULD_ADD_PERSONAL_MESSAGE_PREFIX,
);
expect(ecSignature).to.deep.equal(expectedECSignature);
});
it('should return the correct ECSignature for signatureHex concatenated as R + S + V', async () => {
const orderHash = '0x34decbedc118904df65f379a175bb39ca18209d6ce41d5ed549d54e6e0a95004';
const expectedECSignature = {
v: 27,
r: '0x117902c86dfb95fe0d1badd983ee166ad259b27acb220174cbb4460d87287113',
s: '0x7feabdfe76e05924b484789f79af4ee7fa29ec006cedce1bbf369320d034e10b',
};
const fakeProvider = {
async sendAsync(payload: JSONRPCRequestPayload, callback: JSONRPCErrorCallback): Promise<void> {
if (payload.method === 'eth_sign') {
const [address, message] = payload.params;
const signature = await web3Wrapper.signMessageAsync(address, message);
callback(null, {
id: 42,
jsonrpc: '2.0',
result: `0x${signature.substr(130)}${signature.substr(2, 128)}`,
});
} else {
callback(null, { id: 42, jsonrpc: '2.0', result: [makerAddress] });
}
},
};
const ecSignature = await signOrderHashAsync(
fakeProvider,
orderHash,
makerAddress,
SHOULD_ADD_PERSONAL_MESSAGE_PREFIX,
);
expect(ecSignature).to.deep.equal(expectedECSignature);
});
it('should return the correct ECSignature for signatureHex concatenated as V + R + S', async () => {
const orderHash = '0x34decbedc118904df65f379a175bb39ca18209d6ce41d5ed549d54e6e0a95004';
const expectedECSignature = {
v: 27,
r: '0x117902c86dfb95fe0d1badd983ee166ad259b27acb220174cbb4460d87287113',
s: '0x7feabdfe76e05924b484789f79af4ee7fa29ec006cedce1bbf369320d034e10b',
};
const fakeProvider = {
async sendAsync(payload: JSONRPCRequestPayload, callback: JSONRPCErrorCallback): Promise<void> {
if (payload.method === 'eth_sign') {
const [address, message] = payload.params;
const signature = await web3Wrapper.signMessageAsync(address, message);
callback(null, {
id: 42,
jsonrpc: '2.0',
result: signature,
});
} else {
callback(null, { id: 42, jsonrpc: '2.0', result: [makerAddress] });
}
},
};
const ecSignature = await signOrderHashAsync(
fakeProvider,
orderHash,
makerAddress,
SHOULD_ADD_PERSONAL_MESSAGE_PREFIX,
);
expect(ecSignature).to.deep.equal(expectedECSignature);
});
});
});
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