001/* 002 * Portions of this software was developed by employees of the National Institute 003 * of Standards and Technology (NIST), an agency of the Federal Government and is 004 * being made available as a public service. Pursuant to title 17 United States 005 * Code Section 105, works of NIST employees are not subject to copyright 006 * protection in the United States. This software may be subject to foreign 007 * copyright. Permission in the United States and in foreign countries, to the 008 * extent that NIST may hold copyright, to use, copy, modify, create derivative 009 * works, and distribute this software and its documentation without fee is hereby 010 * granted on a non-exclusive basis, provided that this notice and disclaimer 011 * of warranty appears in all copies. 012 * 013 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER 014 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY 015 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF 016 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM 017 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE 018 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT 019 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT, 020 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM, 021 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY, 022 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR 023 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT 024 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER. 025 */ 026 027package gov.nist.secauto.metaschema.core.datatype.adapter; 028 029import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatTypes; 030 031import gov.nist.secauto.metaschema.core.datatype.AbstractDataTypeAdapter; 032import gov.nist.secauto.metaschema.core.metapath.item.atomic.IBase64BinaryItem; 033import gov.nist.secauto.metaschema.core.util.ObjectUtils; 034 035import java.nio.ByteBuffer; 036import java.util.Base64; 037import java.util.List; 038 039import edu.umd.cs.findbugs.annotations.NonNull; 040 041public class Base64Adapter 042 extends AbstractDataTypeAdapter<ByteBuffer, IBase64BinaryItem> { 043 @NonNull 044 private static final List<String> NAMES = ObjectUtils.notNull( 045 List.of( 046 "base64", 047 // for backwards compatibility with original type name 048 "base64Binary")); 049 050 Base64Adapter() { 051 super(ByteBuffer.class); 052 } 053 054 @Override 055 public List<String> getNames() { 056 return NAMES; 057 } 058 059 @Override 060 public JsonFormatTypes getJsonRawType() { 061 return JsonFormatTypes.STRING; 062 } 063 064 @SuppressWarnings("null") 065 @Override 066 public ByteBuffer parse(String value) { 067 Base64.Decoder decoder = Base64.getDecoder(); 068 byte[] result = decoder.decode(value); 069 return ByteBuffer.wrap(result); 070 } 071 072 @Override 073 public ByteBuffer copy(Object obj) { 074 ByteBuffer buffer = (ByteBuffer) obj; 075 final ByteBuffer clone 076 = buffer.isDirect() ? ByteBuffer.allocateDirect(buffer.capacity()) : ByteBuffer.allocate(buffer.capacity()); 077 final ByteBuffer readOnlyCopy = buffer.asReadOnlyBuffer(); 078 readOnlyCopy.flip(); 079 clone.put(readOnlyCopy); 080 return clone; 081 } 082 083 @SuppressWarnings("null") 084 @Override 085 public String asString(Object value) { 086 Base64.Encoder encoder = Base64.getEncoder(); 087 return encoder.encodeToString(((ByteBuffer) value).array()); 088 } 089 090 @Override 091 public Class<IBase64BinaryItem> getItemClass() { 092 return IBase64BinaryItem.class; 093 } 094 095 @Override 096 public IBase64BinaryItem newItem(Object value) { 097 ByteBuffer item = toValue(value); 098 return IBase64BinaryItem.valueOf(item); 099 } 100 101}