Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/util/drm-messagehandler.js

+(function(){
+// Expect utf8decoder and utf8decoder to be TextEncoder('utf-8') and TextDecoder('utf-8') respectively
+//
+// drmconfig format:
+// { <keysystem> : {    "serverURL"             : <the url for the server>,
+//                      "httpRequestHeaders"    : <map of HTTP request headers>,
+//                      "servertype"            : "microsoft" | "drmtoday",                 // affects how request parameters are formed
+//                      "certificate"           : <base64 encoded server certificate> } }
+//
+
+drmtodaysecret = Uint8Array.from( [144, 34, 109, 76, 134, 7, 97, 107, 98, 251, 140, 28, 98, 79, 153, 222, 231, 245, 154, 226, 193, 1, 213, 207, 152, 204, 144, 15, 13, 2, 37, 236] );
+
+drmconfig = {
+    "com.widevine.alpha": [ {
+        "serverURL": "https://lic.staging.drmtoday.com/license-proxy-widevine/cenc/",
+        "servertype" : "drmtoday",
+        "merchant" : "w3c-eme-test",
+        "secret" : drmtodaysecret
+    } ],
+    "com.microsoft.playready": [ {
+        "serverURL": "http://playready-testserver.azurewebsites.net/rightsmanager.asmx",
+        "servertype": "microsoft",
+        "sessionTypes" : [ "persistent-usage-record" ],
+        "certificate" : "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"
+    },
+    {
+        "serverURL": "http://playready.directtaps.net/pr/svc/rightsmanager.asmx",
+        "servertype": "microsoft",
+        "sessionTypes" : [ "persistent-usage-record" ],
+        "certificate" : "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"
+    },
+    {
+        "serverURL": "https://lic.staging.drmtoday.com/license-proxy-headerauth/drmtoday/RightsManager.asmx",
+        "servertype" : "drmtoday",
+        "sessionTypes" : [ "temporary", "persistent-usage-record", "persistent-license" ],
+        "merchant" : "w3c-eme-test",
+        "secret" : drmtodaysecret
+    } ]
+};
+
+
+var keySystemWrappers = {
+    // Key System wrappers map messages and pass to a handler, then map the response and return to caller
+    //
+    // function wrapper(handler, messageType, message, params)
+    //
+    // where:
+    //      Promise<response> handler(messageType, message, responseType, headers, params);
+    //
+
+    'com.widevine.alpha': function(handler, messageType, message, params) {
+        return handler.call(this, messageType, new Uint8Array(message), 'json', null, params).then(function(response){
+            return base64DecodeToUnit8Array(response.license);
+        });
+    },
+
+    'com.microsoft.playready': function(handler, messageType, message, params) {
+        var msg, xmlDoc;
+        var licenseRequest = null;
+        var headers = {};
+        var parser = new DOMParser();
+        var dataview = new Uint16Array(message);
+
+        msg = String.fromCharCode.apply(null, dataview);
+        xmlDoc = parser.parseFromString(msg, 'application/xml');
+
+        if (xmlDoc.getElementsByTagName('Challenge')[0]) {
+            var challenge = xmlDoc.getElementsByTagName('Challenge')[0].childNodes[0].nodeValue;
+            if (challenge) {
+                licenseRequest = atob(challenge);
+            }
+        }
+
+        var headerNameList = xmlDoc.getElementsByTagName('name');
+        var headerValueList = xmlDoc.getElementsByTagName('value');
+        for (var i = 0; i < headerNameList.length; i++) {
+            headers[headerNameList[i].childNodes[0].nodeValue] = headerValueList[i].childNodes[0].nodeValue;
+        }
+        // some versions of the PlayReady CDM return 'Content' instead of 'Content-Type',
+        // but the license server expects 'Content-Type', so we fix it up here.
+        if (headers.hasOwnProperty('Content')) {
+            headers['Content-Type'] = headers.Content;
+            delete headers.Content;
+        }
+
+        return handler.call(this, messageType, licenseRequest, 'arraybuffer', headers, params).catch(function(response){
+            return response.text().then( function( error ) { throw error; } );
+        });
+    }
+};
+
+const requestConstructors = {
+    // Server request construction functions
+    //
+    // Promise<request> constructRequest(config, sessionType, content, messageType, message, params)
+    //
+    // request = { url: ..., headers: ..., body: ... }
+    //
+    // content = { assetId: ..., variantId: ..., key: ... }
+    // params = { expiration: ... }
+
+    'drmtoday': function(config, sessionType, content, messageType, message, headers, params) {
+        var optData = JSON.stringify({merchant: config.merchant, userId:"12345", sessionId:""});
+        var crt = {};
+        if (messageType === 'license-request') {
+            crt = {assetId: content.assetId,
+                    outputProtection: {digital : false, analogue: false, enforce: false},
+                    storeLicense: (sessionType === 'persistent-license')};
+
+            if (!params || params.expiration === undefined) {
+                crt.profile = {purchase: {}};
+            } else {
+                crt.profile = {rental: {absoluteExpiration: (new Date(params.expiration)).toISOString(),
+                                        playDuration: 3600000 } };
+            }
+
+            if (content.variantId !== undefined) {
+                crt.variantId = content.variantId;
+            }
+        }
+
+        return JWT.encode("HS256", {optData: optData, crt: JSON.stringify([crt])}, config.secret).then(function(jwt){
+            headers = headers || {};
+            headers['x-dt-auth-token'] = jwt;
+            return {url: config.serverURL, headers: headers, body: message};
+        });
+    },
+
+    'microsoft': function(config, sessionType, content, messageType, message, headers, params) {
+        var url = config.serverURL;
+        if (messageType === 'license-request') {
+            url += "?";
+            if (sessionType === 'temporary' || sessionType === 'persistent-usage-record') {
+                url += "UseSimpleNonPersistentLicense=1&";
+            }
+            if (sessionType === 'persistent-usage-record') {
+                url += "SecureStop=1&";
+            }
+            url += "PlayEnablers=B621D91F-EDCC-4035-8D4B-DC71760D43E9&";    // disable output protection
+            url += "ContentKey=" + btoa(String.fromCharCode.apply(null, content.key));
+            return url;
+        }
+
+        // TODO: Include expiration time in URL
+        return Promise.resolve({url: url, headers: headers, body: message});
+    }
+};
+
+MessageHandler = function(keysystem, content, sessionType) {
+    sessionType = sessionType || "temporary";
+
+    this._keysystem = keysystem;
+    this._content = content;
+    this._sessionType = sessionType;
+    try {
+        this._drmconfig = drmconfig[this._keysystem].filter(function(drmconfig) {
+            return drmconfig.sessionTypes === undefined || (drmconfig.sessionTypes.indexOf(sessionType) !== -1);
+        })[0];
+        this._requestConstructor = requestConstructors[this._drmconfig.servertype];
+
+        this.messagehandler = keySystemWrappers[keysystem].bind(this, MessageHandler.prototype.messagehandler);
+
+        if (this._drmconfig && this._drmconfig.certificate) {
+            this.servercertificate = stringToUint8Array(atob(this._drmconfig.certificate));
+        }
+    } catch(e) {
+        return null;
+    }
+}
+
+MessageHandler.prototype.messagehandler = function messagehandler(messageType, message, responseType, headers, params) {
+
+    var variantId = params ? params.variantId : undefined;
+    var key;
+    if( variantId ) {
+        var keys = this._content.keys.filter(function(k){return k.variantId === variantId;});
+        if (keys[0]) key = keys[0].key;
+    }
+    if (!key) {
+        key = this._content.keys[0].key;
+    }
+
+    var content = {assetId:    this._content.assetId,
+                    variantId:  variantId,
+                    key:        key};
+
+    return this._requestConstructor(this._drmconfig, this._sessionType, content, messageType, message, headers, params).then(function(request){
+        return fetch(request.url, {
+                        method:     'POST',
+                        headers:    request.headers,
+                        body:       request.body    });
+    }).then(function(fetchresponse){
+        if(fetchresponse.status !== 200) {
+            throw fetchresponse;
+        }
+
+        if(responseType === 'json') {
+            return fetchresponse.json();
+        } else if(responseType === 'arraybuffer') {
+            return fetchresponse.arrayBuffer();
+        }
+    });
+}
+
+})();
+
+(function() {
+
+    var subtlecrypto = window.crypto.subtle;
+
+    // Encoding / decoding utilities
+    function b64pad(b64)        { return b64+"==".substr(0,(b64.length%4)?(4-b64.length%4):0); }
+    function str2b64url(str)    { return btoa(str).replace(/=+$/g, '').replace(/\+/g, "-").replace(/\//g, "_"); }
+    function b64url2str(b64)    { return atob(b64pad(b64.replace(/\-/g, "+").replace(/\_/g, "/"))); }
+    function str2ab(str)        { return Uint8Array.from( str.split(''), function(s){return s.charCodeAt(0)} ); }
+    function ab2str(ab)         { return String.fromCharCode.apply(null, new Uint8Array(ab)); }
+
+    function jwt2webcrypto(alg) {
+        if (alg === "HS256") return {name: "HMAC", hash: "SHA-256", length: 256};
+        else if (alg === "HS384") return { name: "HMAC", hash: "SHA-384", length: 384};
+        else if (alg === "HS512") return { name: "HMAC", hash: "SHA-512", length: 512};
+        else throw new Error("Unrecognized JWT algorithm: " + alg);
+    }
+
+    JWT = {
+        encode: function encode(alg, claims, secret) {
+            var algorithm = jwt2webcrypto(alg);
+            if (secret.byteLength !== algorithm.length / 8) throw new Error("Unexpected secret length: " + secret.byteLength);
+
+            if (!claims.iat) claims.iat = ((Date.now() / 1000) | 0) - 60;
+            if (!claims.jti) {
+                var nonce = new Uint8Array(16);
+                window.crypto.getRandomValues(nonce);
+                claims.jti = str2b64url( ab2str(nonce) );
+            }
+
+            var header = {typ: "JWT", alg: alg};
+            var plaintext = str2b64url(JSON.stringify(header)) + '.' + str2b64url(JSON.stringify(claims));
+            return subtlecrypto.importKey("raw", secret, algorithm, false, [ "sign" ]).then( function(key) {
+                return subtlecrypto.sign(algorithm, key, str2ab(plaintext));
+            }).then(function(hmac){
+                return plaintext + '.' + str2b64url(ab2str(hmac));
+            });
+        },
+
+        decode: function decode(jwt, secret) {
+            var jwtparts = jwt.split('.');
+            var header = JSON.parse( b64url2str(jwtparts[0]));
+            var claims = JSON.parse( b64url2str(jwtparts[1]));
+            var hmac = str2ab(b64url2str(jwtparts[2]));
+            var algorithm = jwt2webcrypto(header.alg);
+            if (secret.byteLength !== algorithm.length / 8) throw new Error("Unexpected secret length: " + secret.byteLength);
+
+            return subtlecrypto.importKey("raw", secret, algorithm, false, ["sign", "verify"]).then(function(key) {
+                return subtlecrypto.verify(algorithm, key, hmac, str2ab(jwtparts[0] + '.' + jwtparts[1]));
+            }).then(function(success){
+                if (!success) throw new Error("Invalid signature");
+                return claims;
+            });
+        }
+    };
+})();