mirror of
https://github.com/element-hq/element-web.git
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212 lines
7.6 KiB
JavaScript
212 lines
7.6 KiB
JavaScript
/*
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Copyright 2018 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { DecryptionFailure, DecryptionFailureTracker } from '../src/DecryptionFailureTracker';
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import { MatrixEvent } from 'matrix-js-sdk';
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class MockDecryptionError extends Error {
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constructor(code) {
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super();
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this.code = code || 'MOCK_DECRYPTION_ERROR';
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}
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}
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function createFailedDecryptionEvent() {
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const event = new MatrixEvent({
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event_id: "event-id-" + Math.random().toString(16).slice(2),
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});
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event._setClearData(
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event._badEncryptedMessage(":("),
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);
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return event;
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}
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describe('DecryptionFailureTracker', function() {
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it('tracks a failed decryption', function(done) {
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const failedDecryptionEvent = createFailedDecryptionEvent();
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let count = 0;
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const tracker = new DecryptionFailureTracker((total) => count += total);
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const err = new MockDecryptionError();
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tracker.eventDecrypted(failedDecryptionEvent, err);
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// Pretend "now" is Infinity
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tracker.checkFailures(Infinity);
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// Immediately track the newest failures
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tracker.trackFailures();
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expect(count).not.toBe(0, 'should track a failure for an event that failed decryption');
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done();
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});
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it('does not track a failed decryption where the event is subsequently successfully decrypted', (done) => {
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const decryptedEvent = createFailedDecryptionEvent();
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const tracker = new DecryptionFailureTracker((total) => {
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expect(true).toBe(false, 'should not track an event that has since been decrypted correctly');
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});
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const err = new MockDecryptionError();
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tracker.eventDecrypted(decryptedEvent, err);
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// Indicate successful decryption: clear data can be anything where the msgtype is not m.bad.encrypted
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decryptedEvent._setClearData({});
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tracker.eventDecrypted(decryptedEvent, null);
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// Pretend "now" is Infinity
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tracker.checkFailures(Infinity);
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// Immediately track the newest failures
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tracker.trackFailures();
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done();
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});
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it('only tracks a single failure per event, despite multiple failed decryptions for multiple events', (done) => {
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const decryptedEvent = createFailedDecryptionEvent();
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const decryptedEvent2 = createFailedDecryptionEvent();
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let count = 0;
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const tracker = new DecryptionFailureTracker((total) => count += total);
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// Arbitrary number of failed decryptions for both events
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const err = new MockDecryptionError();
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tracker.eventDecrypted(decryptedEvent, err);
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tracker.eventDecrypted(decryptedEvent, err);
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tracker.eventDecrypted(decryptedEvent, err);
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tracker.eventDecrypted(decryptedEvent, err);
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tracker.eventDecrypted(decryptedEvent, err);
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tracker.eventDecrypted(decryptedEvent2, err);
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tracker.eventDecrypted(decryptedEvent2, err);
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tracker.eventDecrypted(decryptedEvent2, err);
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// Pretend "now" is Infinity
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tracker.checkFailures(Infinity);
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// Simulated polling of `trackFailures`, an arbitrary number ( > 2 ) times
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tracker.trackFailures();
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tracker.trackFailures();
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tracker.trackFailures();
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tracker.trackFailures();
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expect(count).toBe(2, count + ' failures tracked, should only track a single failure per event');
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done();
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});
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it('should not track a failure for an event that was tracked previously', (done) => {
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const decryptedEvent = createFailedDecryptionEvent();
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let count = 0;
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const tracker = new DecryptionFailureTracker((total) => count += total);
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// Indicate decryption
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const err = new MockDecryptionError();
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tracker.eventDecrypted(decryptedEvent, err);
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// Pretend "now" is Infinity
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tracker.checkFailures(Infinity);
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tracker.trackFailures();
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// Indicate a second decryption, after having tracked the failure
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tracker.eventDecrypted(decryptedEvent, err);
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tracker.trackFailures();
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expect(count).toBe(1, 'should only track a single failure per event');
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done();
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});
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xit('should not track a failure for an event that was tracked in a previous session', (done) => {
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// This test uses localStorage, clear it beforehand
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localStorage.clear();
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const decryptedEvent = createFailedDecryptionEvent();
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let count = 0;
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const tracker = new DecryptionFailureTracker((total) => count += total);
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// Indicate decryption
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const err = new MockDecryptionError();
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tracker.eventDecrypted(decryptedEvent, err);
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// Pretend "now" is Infinity
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// NB: This saves to localStorage specific to DFT
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tracker.checkFailures(Infinity);
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tracker.trackFailures();
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// Simulate the browser refreshing by destroying tracker and creating a new tracker
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const secondTracker = new DecryptionFailureTracker((total) => count += total);
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//secondTracker.loadTrackedEventHashMap();
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secondTracker.eventDecrypted(decryptedEvent, err);
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secondTracker.checkFailures(Infinity);
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secondTracker.trackFailures();
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expect(count).toBe(1, count + ' failures tracked, should only track a single failure per event');
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done();
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});
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it('should count different error codes separately for multiple failures with different error codes', () => {
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const counts = {};
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const tracker = new DecryptionFailureTracker(
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(total, errorCode) => counts[errorCode] = (counts[errorCode] || 0) + total,
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);
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// One failure of ERROR_CODE_1, and effectively two for ERROR_CODE_2
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id1', 'ERROR_CODE_1'));
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id2', 'ERROR_CODE_2'));
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id2', 'ERROR_CODE_2'));
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id3', 'ERROR_CODE_2'));
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// Pretend "now" is Infinity
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tracker.checkFailures(Infinity);
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tracker.trackFailures();
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expect(counts['ERROR_CODE_1']).toBe(1, 'should track one ERROR_CODE_1');
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expect(counts['ERROR_CODE_2']).toBe(2, 'should track two ERROR_CODE_2');
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});
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it('should map error codes correctly', () => {
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const counts = {};
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const tracker = new DecryptionFailureTracker(
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(total, errorCode) => counts[errorCode] = (counts[errorCode] || 0) + total,
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(errorCode) => 'MY_NEW_ERROR_CODE',
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);
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// One failure of ERROR_CODE_1, and effectively two for ERROR_CODE_2
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id1', 'ERROR_CODE_1'));
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id2', 'ERROR_CODE_2'));
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tracker.addDecryptionFailure(new DecryptionFailure('$event_id3', 'ERROR_CODE_3'));
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// Pretend "now" is Infinity
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tracker.checkFailures(Infinity);
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tracker.trackFailures();
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expect(counts['MY_NEW_ERROR_CODE'])
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.toBe(3, 'should track three MY_NEW_ERROR_CODE, got ' + counts['MY_NEW_ERROR_CODE']);
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});
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});
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