//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
var HmacSha256Sign = require('./hmacsha256sign');
var Constants = require('./../util/constants');
var SR = require('./../util/sr');
/**
* Creates a new SharedAccessSignature object.
*
* @constructor
* @param {string} sasToken The sasToken.
*/
function SharedAccessSignature(sasToken) {
this.sasToken = sasToken;
this.signer = new HmacSha256Sign(sasToken);
}
/**
* Signs a request with the signature header.
*
* @this {SharedAccessSignature}
* @param {WebResource} The webresource to be signed.
* @param {function(error)} callback The callback function.
* @return {undefined}
*/
SharedAccessSignature.prototype.signRequest = function (webResource, callback) {
Eif (webResource.uri.indexOf('?') === -1) {
webResource.uri += '?';
} else {
webResource.uri += '&';
}
webResource.uri += this.sasToken;
// Add the api-version
Iif (this.sasToken.indexOf('api-version') == -1) {
webResource.uri += '&' + Constants.QueryStringConstants.API_VERSION + '=' + Constants.HeaderConstants.TARGET_STORAGE_VERSION;
} else {
throw new Error(SR.INVALID_SAS_TOKEN);
}
callback(null);
};
module.exports = SharedAccessSignature;
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