Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | 1x 1x 1x 48x 48x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 48x 48x 1x | /**
* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import KeyPair from '../vo/KeyPair.js';
import ClearKeyKeySet from '../vo/ClearKeyKeySet.js';
import CommonEncryption from '../CommonEncryption.js';
import ProtectionConstants from '../../constants/ProtectionConstants.js';
import FactoryMaker from '../../../core/FactoryMaker.js';
const uuid = ProtectionConstants.W3C_CLEARKEY_UUID;
const systemString = ProtectionConstants.CLEARKEY_KEYSTEM_STRING;
const schemeIdURI = 'urn:uuid:' + uuid;
function KeySystemW3CClearKey(config) {
let instance;
const BASE64 = config.BASE64;
const logger = config.debug.getLogger(instance);
/**
* Returns desired clearkeys (as specified in the CDM message) from protection data
*
* @param {ProtectionDataSet} protectionData the protection data
* @param {ArrayBuffer} message the ClearKey CDM message
* @returns {ClearKeyKeySet} the key set or null if none found
* @throws {Error} if a keyID specified in the CDM message was not found in the
* protection data
* @memberof KeySystemClearKey
*/
function getClearKeysFromProtectionData(protectionData, message) {
let clearkeySet = null;
if (protectionData) {
// ClearKey is the only system that does not require a license server URL, so we
// handle it here when keys are specified in protection data
const jsonMsg = JSON.parse(String.fromCharCode.apply(null, new Uint8Array(message)));
const keyPairs = [];
for (let i = 0; i < jsonMsg.kids.length; i++) {
const clearkeyID = jsonMsg.kids[i];
const clearkey = (protectionData.clearkeys && protectionData.clearkeys.hasOwnProperty(clearkeyID)) ? protectionData.clearkeys[clearkeyID] : null;
Iif (!clearkey) {
throw new Error('DRM: ClearKey keyID (' + clearkeyID + ') is not known!');
}
// KeyIDs from CDM are not base64 padded. Keys may or may not be padded
keyPairs.push(new KeyPair(clearkeyID, clearkey));
}
clearkeySet = new ClearKeyKeySet(keyPairs);
logger.warn('ClearKey schemeIdURI is using W3C Common PSSH systemID (1077efec-c0b2-4d02-ace3-3c1e52e2fb4b) in Content Protection. See DASH-IF IOP v4.1 section 7.6.2.4');
}
return clearkeySet;
}
function getInitData(cp) {
return CommonEncryption.parseInitDataFromContentProtection(cp, BASE64);
}
function getRequestHeadersFromMessage(/*message*/) {
return null;
}
function getLicenseRequestFromMessage(message) {
return new Uint8Array(message);
}
function getLicenseServerURLFromInitData(/*initData*/) {
return null;
}
function getCDMData(/*cdmData*/) {
return null;
}
instance = {
uuid: uuid,
schemeIdURI: schemeIdURI,
systemString: systemString,
getInitData: getInitData,
getRequestHeadersFromMessage: getRequestHeadersFromMessage,
getLicenseRequestFromMessage: getLicenseRequestFromMessage,
getLicenseServerURLFromInitData: getLicenseServerURLFromInitData,
getCDMData: getCDMData,
getClearKeysFromProtectionData: getClearKeysFromProtectionData
};
return instance;
}
KeySystemW3CClearKey.__dashjs_factory_name = 'KeySystemW3CClearKey';
export default FactoryMaker.getSingletonFactory(KeySystemW3CClearKey);
|