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import {
AssertionCredential,
PublicKeyCredentialRequestOptionsJSON,
} from '@simplewebauthn/typescript-types';
import supportsWebauthn from '../helpers/supportsWebauthn';
import toUint8Array from '../helpers/toUint8Array';
import bufferToBase64URLString from '../helpers/bufferToBase64URLString';
import startAssertion from './startAssertion';
jest.mock('../helpers/supportsWebauthn');
const mockNavigatorGet = window.navigator.credentials.get as jest.Mock;
const mockSupportsWebauthn = supportsWebauthn as jest.Mock;
const mockAuthenticatorData = 'mockAuthenticatorData';
const mockClientDataJSON = 'mockClientDataJSON';
const mockSignature = 'mockSignature';
const mockUserHandle = 'mockUserHandle';
// With ASCII challenge
const goodOpts1: PublicKeyCredentialRequestOptionsJSON = {
challenge: bufferToBase64URLString(toUint8Array('fizz')),
allowCredentials: [
{
id: 'C0VGlvYFratUdAV1iCw-ULpUW8E-exHPXQChBfyVeJZCMfjMFcwDmOFgoMUz39LoMtCJUBW8WPlLkGT6q8qTCg',
type: 'public-key',
transports: ['nfc'],
},
],
timeout: 1,
};
// With UTF-8 challenge
const goodOpts2UTF8: PublicKeyCredentialRequestOptionsJSON = {
challenge: bufferToBase64URLString(toUint8Array('やれやれだぜ')),
allowCredentials: [],
timeout: 1,
};
// Without allow credentials
const goodOpts3: PublicKeyCredentialRequestOptionsJSON = {
challenge: bufferToBase64URLString(toUint8Array('fizz')),
timeout: 1,
};
beforeEach(() => {
mockNavigatorGet.mockReset();
mockSupportsWebauthn.mockReset();
});
test('should convert options before passing to navigator.credentials.get(...)', async done => {
mockSupportsWebauthn.mockReturnValue(true);
// Stub out a response so the method won't throw
mockNavigatorGet.mockImplementation(
(): Promise<any> => {
return new Promise(resolve => {
resolve({
response: {},
getClientExtensionResults: () => ({}),
});
});
},
);
const checkWithOpts = async (opts: PublicKeyCredentialRequestOptionsJSON) => {
await startAssertion(opts);
const argsPublicKey = mockNavigatorGet.mock.calls[0][0].publicKey;
const credId = argsPublicKey.allowCredentials[0].id;
expect(new Uint8Array(argsPublicKey.challenge)).toEqual(new Uint8Array([102, 105, 122, 122]));
// Make sure the credential ID is an ArrayBuffer with a length of 64
expect(credId instanceof ArrayBuffer).toEqual(true);
expect(credId.byteLength).toEqual(64);
};
await checkWithOpts(goodOpts1);
await checkWithOpts(goodOpts3);
done();
});
test('should return base64url-encoded response values', async done => {
mockSupportsWebauthn.mockReturnValue(true);
mockNavigatorGet.mockImplementation(
(): Promise<AssertionCredential> => {
return new Promise(resolve => {
resolve({
id: 'foobar',
rawId: Buffer.from('foobar', 'ascii'),
response: {
authenticatorData: Buffer.from(mockAuthenticatorData, 'ascii'),
clientDataJSON: Buffer.from(mockClientDataJSON, 'ascii'),
signature: Buffer.from(mockSignature, 'ascii'),
userHandle: Buffer.from(mockUserHandle, 'ascii'),
},
getClientExtensionResults: () => ({}),
type: 'webauthn.get',
});
});
},
);
const response = await startAssertion(goodOpts1);
expect(response.rawId).toEqual('Zm9vYmFy');
expect(response.response.authenticatorData).toEqual('bW9ja0F1dGhlbnRpY2F0b3JEYXRh');
expect(response.response.clientDataJSON).toEqual('bW9ja0NsaWVudERhdGFKU09O');
expect(response.response.signature).toEqual('bW9ja1NpZ25hdHVyZQ');
expect(response.response.userHandle).toEqual('bW9ja1VzZXJIYW5kbGU');
done();
});
test("should throw error if WebAuthn isn't supported", async done => {
mockSupportsWebauthn.mockReturnValue(false);
await expect(startAssertion(goodOpts1)).rejects.toThrow(
'WebAuthn is not supported in this browser',
);
done();
});
test('should throw error if assertion is cancelled for some reason', async done => {
mockSupportsWebauthn.mockReturnValue(true);
mockNavigatorGet.mockImplementation(
(): Promise<null> => {
return new Promise(resolve => {
resolve(null);
});
},
);
await expect(startAssertion(goodOpts1)).rejects.toThrow('Assertion was not completed');
done();
});
test('should handle UTF-8 challenges', async done => {
mockSupportsWebauthn.mockReturnValue(true);
// Stub out a response so the method won't throw
mockNavigatorGet.mockImplementation(
(): Promise<any> => {
return new Promise(resolve => {
resolve({
response: {},
getClientExtensionResults: () => ({}),
});
});
},
);
await startAssertion(goodOpts2UTF8);
const argsPublicKey = mockNavigatorGet.mock.calls[0][0].publicKey;
expect(new Uint8Array(argsPublicKey.challenge)).toEqual(
new Uint8Array([
227,
130,
132,
227,
130,
140,
227,
130,
132,
227,
130,
140,
227,
129,
160,
227,
129,
156,
]),
);
done();
});
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