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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | 1x 1x 1x 45x 45x 45x 45x 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.CLEARKEY_UUID;
const systemString = ProtectionConstants.CLEARKEY_KEYSTEM_STRING;
const schemeIdURI = 'urn:uuid:' + uuid;
function KeySystemClearKey(config) {
config = config || {};
let instance;
const BASE64 = config.BASE64;
/**
* Returns desired clearkeys (as specified in the CDM message) from protection data
*
* @param {ProtectionData} 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;
if (!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);
}
return clearkeySet;
}
function getInitData(cp, cencContentProtection) {
try {
let initData = CommonEncryption.parseInitDataFromContentProtection(cp, BASE64);
if (!initData && cencContentProtection) {
const cencDefaultKid = cencDefaultKidToBase64Representation(cencContentProtection.cencDefaultKid);
const data = { kids: [cencDefaultKid] };
initData = new TextEncoder().encode(JSON.stringify(data));
}
return initData;
} catch (e) {
return null;
}
}
function cencDefaultKidToBase64Representation(cencDefaultKid) {
try {
let kid = cencDefaultKid.replace(/-/g, '');
kid = btoa(kid.match(/\w{2}/g).map((a) => {
return String.fromCharCode(parseInt(a, 16));
}).join(''));
return kid.replace(/=/g, '')
.replace(/\//g, '_')
.replace(/\+/g, '-');
} catch (e) {
return null;
}
}
function getRequestHeadersFromMessage(/*message*/) {
// Set content type to application/json by default
return {
'Content-Type': 'application/json'
};
}
function getLicenseRequestFromMessage(message) {
return JSON.stringify(JSON.parse(String.fromCharCode.apply(null, new Uint8Array(message))));
}
function getLicenseServerURLFromInitData(/*initData*/) {
return null;
}
function getCDMData(/*cdmData*/) {
return null;
}
instance = {
uuid,
schemeIdURI,
systemString,
getInitData,
getRequestHeadersFromMessage,
getLicenseRequestFromMessage,
getLicenseServerURLFromInitData,
getCDMData,
getClearKeysFromProtectionData
};
return instance;
}
KeySystemClearKey.__dashjs_factory_name = 'KeySystemClearKey';
export default FactoryMaker.getSingletonFactory(KeySystemClearKey);
|