1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Utils provide logging functions and other JS functions commonly used by the
6 // app and media players.
7 var Utils = new function() {
8 this.titleChanged = false;
11 // Adds options to document element.
12 Utils.addOptions = function(elementID, keyValueOptions, disabledOptions) {
13 disabledOptions = disabledOptions || [];
14 var selectElement = document.getElementById(elementID);
15 var keys = Object.keys(keyValueOptions);
16 for (var i = 0; i < keys.length; i++) {
18 var option = new Option(key, keyValueOptions[key]);
19 option.title = keyValueOptions[key];
20 if (disabledOptions.indexOf(key) >= 0)
21 option.disabled = true;
22 selectElement.options.add(option);
26 Utils.convertToArray = function(input) {
27 if (Array.isArray(input))
32 Utils.convertToUint8Array = function(msg) {
33 if (typeof msg == 'string') {
34 var ans = new Uint8Array(msg.length);
35 for (var i = 0; i < msg.length; i++) {
36 ans[i] = msg.charCodeAt(i);
40 // Assume it is an ArrayBuffer or ArrayBufferView. If it already is a
41 // Uint8Array, this will just make a copy of the view.
42 return new Uint8Array(msg);
45 Utils.createJWKData = function(keyId, key) {
46 // JWK routines copied from third_party/WebKit/LayoutTests/media/
47 // encrypted-media/encrypted-media-utils.js
49 // Encodes data (Uint8Array) into base64url string. There is no '=' padding,
50 // and the characters '-' and '_' must be used instead of '+' and '/',
52 function base64urlEncode(data) {
53 var result = btoa(String.fromCharCode.apply(null, data));
54 return result.replace(/=+$/g, '').replace(/\+/g, "-").replace(/\//g, "_");
57 // Creates a JWK from raw key ID and key.
58 function createJWK(keyId, key) {
59 var jwk = '{"kty":"oct","alg":"A128KW","kid":"';
60 jwk += base64urlEncode(keyId);
62 jwk += base64urlEncode(key);
67 // Creates a JWK Set from an array of JWK(s).
68 function createJWKSet() {
69 var jwkSet = '{"keys":[';
70 for (var i = 0; i < arguments.length; i++) {
73 jwkSet += arguments[i];
79 return Utils.convertToUint8Array(createJWKSet(createJWK(keyId, key)));
82 Utils.extractFirstLicenseKeyId = function(message) {
83 // Decodes data (Uint8Array) from base64url string.
84 function base64urlDecode(data) {
85 return atob(data.replace(/\-/g, "+").replace(/\_/g, "/"));
88 function convertToString(data) {
89 return String.fromCharCode.apply(null, Utils.convertToUint8Array(data));
93 var json = JSON.parse(convertToString(message));
94 // Decode the first element of 'kids', return it as an Uint8Array.
95 return Utils.convertToUint8Array(base64urlDecode(json.kids[0]));
97 // Not valid JSON, so return message untouched as Uint8Array.
98 return Utils.convertToUint8Array(message);
102 Utils.documentLog = function(log, success, time) {
105 time = time || Utils.getCurrentTimeString();
106 var timeLog = '<span style="color: green">' + time + '</span>';
107 var logColor = !success ? 'red' : 'black'; // default is true.
108 log = '<span style="color: "' + logColor + '>' + log + '</span>';
109 docLogs.innerHTML = timeLog + ' - ' + log + '<br>' + docLogs.innerHTML;
112 Utils.ensureOptionInList = function(listID, option) {
113 var selectElement = document.getElementById(listID);
114 for (var i = 0; i < selectElement.length; i++) {
115 if (selectElement.options[i].value == option) {
116 selectElement.value = option;
120 // The list does not have the option, let's add it and select it.
121 var optionElement = new Option(option, option);
122 optionElement.title = option;
123 selectElement.options.add(optionElement);
124 selectElement.value = option;
127 Utils.failTest = function(msg, newTitle) {
128 var failMessage = 'FAIL: ';
129 var title = 'FAILED';
130 // Handle exception messages;
132 title = msg.name || 'Error';
133 failMessage += title + ' ' + msg.message;
134 } else if (msg instanceof Event) {
135 // Handle failing events.
136 failMessage = msg.target + '.' + msg.type;
141 // Force newTitle if passed.
142 title = newTitle || title;
144 Utils.documentLog(failMessage, false);
145 console.log(failMessage, msg);
146 Utils.setResultInTitle(title);
149 Utils.getCurrentTimeString = function() {
150 var date = new Date();
151 var hours = ('0' + date.getHours()).slice(-2);
152 var minutes = ('0' + date.getMinutes()).slice(-2);
153 var secs = ('0' + date.getSeconds()).slice(-2);
154 var milliSecs = ('00' + date.getMilliseconds()).slice(-3);
155 return hours + ':' + minutes + ':' + secs + '.' + milliSecs;
158 Utils.getDefaultKey = function(forceInvalidResponse) {
159 if (forceInvalidResponse) {
160 Utils.timeLog('Forcing invalid key data.');
161 return new Uint8Array([0xAA]);
166 Utils.getHexString = function(uintArray) {
168 for (var i = 0; i < uintArray.length; i++) {
169 var hex = uintArray[i].toString(16);
177 Utils.hasPrefix = function(msg, prefix) {
178 var message = String.fromCharCode.apply(null, msg);
179 return message.substring(0, prefix.length) == prefix;
182 Utils.installTitleEventHandler = function(element, event) {
183 element.addEventListener(event, function(e) {
184 Utils.setResultInTitle(e.type);
188 Utils.isRenewalMessage = function(message) {
189 if (message.messageType != 'license-renewal')
192 if (!Utils.isRenewalMessagePrefixed(message.message)) {
193 Utils.failTest('license-renewal message doesn\'t contain expected header',
194 PREFIXED_EME_RENEWAL_MISSING_HEADER);
199 // For the prefixed API renewal messages are determined by looking at the
200 // message and finding a known string.
201 Utils.isRenewalMessagePrefixed = function(msg) {
202 return Utils.hasPrefix(Utils.convertToUint8Array(msg),
203 PREFIXED_EME_RENEWAL_MESSAGE_HEADER);
206 Utils.resetTitleChange = function() {
207 this.titleChanged = false;
211 Utils.sendRequest = function(requestType, responseType, message, serverURL,
212 onSuccessCallbackFn, forceInvalidResponse) {
213 var requestAttemptCount = 0;
214 var REQUEST_RETRY_DELAY_MS = 3000;
215 var REQUEST_TIMEOUT_MS = 1000;
217 function sendRequestAttempt() {
218 // No limit on the number of retries. This will retry on failures
219 // until the test framework stops the test.
220 requestAttemptCount++;
221 var xmlhttp = new XMLHttpRequest();
222 xmlhttp.responseType = responseType;
223 xmlhttp.open(requestType, serverURL, true);
224 xmlhttp.onerror = function(e) {
225 Utils.timeLog('Request status: ' + this.statusText);
226 Utils.timeLog('FAILED: License request XHR failed with network error.');
227 Utils.timeLog('Retrying request in ' + REQUEST_RETRY_DELAY_MS + 'ms');
228 setTimeout(sendRequestAttempt, REQUEST_RETRY_DELAY_MS);
230 xmlhttp.onload = function(e) {
231 if (this.status == 200) {
232 if (onSuccessCallbackFn)
233 onSuccessCallbackFn(this.response);
235 Utils.timeLog('Bad response status: ' + this.status);
236 Utils.timeLog('Bad response: ' + this.response);
237 Utils.timeLog('Retrying request in ' + REQUEST_RETRY_DELAY_MS + 'ms');
238 setTimeout(sendRequestAttempt, REQUEST_RETRY_DELAY_MS);
241 xmlhttp.timeout = REQUEST_TIMEOUT_MS;
242 xmlhttp.ontimeout = function(e) {
243 Utils.timeLog('Request timeout');
244 Utils.timeLog('Retrying request in ' + REQUEST_RETRY_DELAY_MS + 'ms');
245 setTimeout(sendRequestAttempt, REQUEST_RETRY_DELAY_MS);
247 Utils.timeLog('Attempt (' + requestAttemptCount +
248 '): sending request to server: ' + serverURL);
249 xmlhttp.send(message);
252 if (forceInvalidResponse) {
253 Utils.timeLog('Not sending request - forcing an invalid response.');
254 return onSuccessCallbackFn([0xAA]);
256 sendRequestAttempt();
259 Utils.setResultInTitle = function(title) {
260 // If document title is 'ENDED', then update it with new title to possibly
261 // mark a test as failure. Otherwise, keep the first title change in place.
262 if (!this.titleChanged || document.title.toUpperCase() == 'ENDED')
263 document.title = title.toUpperCase();
264 Utils.timeLog('Set document title to: ' + title + ', updated title: ' +
266 this.titleChanged = true;
269 Utils.timeLog = function(/**/) {
270 if (arguments.length == 0)
272 var time = Utils.getCurrentTimeString();
274 Utils.documentLog(arguments[0], time);
275 // Log to JS console.
276 var logString = time + ' - ';
277 for (var i = 0; i < arguments.length; i++) {
278 logString += ' ' + arguments[i];
280 console.log(logString);