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/*-
* ============LICENSE_START=======================================================
* sdc-distribution-client
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.utils;
import java.util.regex.Pattern;
import org.apache.commons.codec.binary.Base64;
public class GeneralUtils {
public static String calculateMD5 (String data){
String calculatedMd5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(data);
// encode base-64 result
byte[] encodeBase64 = Base64.encodeBase64(calculatedMd5.getBytes());
String encodeBase64Str = new String(encodeBase64);
return encodeBase64Str;
}
public static String calculateMD5(byte[] decodedPayload) {
String decodedMd5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(decodedPayload);
byte[] encodeMd5 = Base64.encodeBase64(decodedMd5.getBytes());
return new String(encodeMd5);
}
public static boolean isBase64Encoded(String str){
boolean isEncoded = false;
try
{
// If no exception is caught, then it is possibly a base64 encoded string
byte[] data = Base64.decodeBase64(str);
// checks if the string was properly padded to the
isEncoded= ((str.length() % 4 == 0) && (Pattern.matches("\\A[a-zA-Z0-9/+]+={1,2}\\z", str)));
}
catch (Exception e)
{
// If exception is caught, then it is not a base64 encoded string
isEncoded= false;
}
return isEncoded;
}
}
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