| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * |
| */ |
| package org.apache.kerby.asn1.type; |
| |
| import org.apache.kerby.asn1.Asn1Binder; |
| import org.apache.kerby.asn1.Asn1Converter; |
| import org.apache.kerby.asn1.Asn1Dumpable; |
| import org.apache.kerby.asn1.Asn1Dumper; |
| import org.apache.kerby.asn1.Asn1FieldInfo; |
| import org.apache.kerby.asn1.Tag; |
| import org.apache.kerby.asn1.TaggingOption; |
| import org.apache.kerby.asn1.UniversalTag; |
| import org.apache.kerby.asn1.parse.Asn1ParseResult; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Can be any valid ASN-1 ojbect, limited or not limited. |
| */ |
| public class Asn1Any |
| extends AbstractAsn1Type<Asn1Type> implements Asn1Dumpable { |
| private Asn1FieldInfo decodeInfo; |
| private Asn1ParseResult parseResult; |
| private boolean isBlindlyDecoded = true; |
| |
| public Asn1Any() { |
| super(UniversalTag.ANY); |
| } |
| |
| public Asn1Any(Asn1Type anyValue) { |
| this(); |
| setValue(anyValue); |
| } |
| |
| @Override |
| public Tag tag() { |
| if (getValue() != null) { |
| return getValue().tag(); |
| } else if (parseResult != null) { |
| return parseResult.tag(); |
| } |
| return super.tag(); |
| } |
| |
| public void setDecodeInfo(Asn1FieldInfo decodeInfo) { |
| this.decodeInfo = decodeInfo; |
| } |
| |
| public Asn1ParseResult getParseResult() { |
| return parseResult; |
| } |
| |
| @Override |
| public void encode(ByteBuffer buffer) throws IOException { |
| Asn1Encodeable theValue = (Asn1Encodeable) getValue(); |
| |
| if (theValue != null) { |
| if (!isBlindlyDecoded) { |
| if (decodeInfo.isTagged()) { |
| TaggingOption taggingOption = |
| decodeInfo.getTaggingOption(); |
| theValue.taggedEncode(buffer, taggingOption); |
| } else { |
| theValue.encode(buffer); |
| } |
| } else { |
| theValue.encode(buffer); |
| } |
| } |
| } |
| |
| @Override |
| public int encodingLength() { |
| Asn1Encodeable theValue = (Asn1Encodeable) getValue(); |
| |
| if (theValue != null) { |
| if (!isBlindlyDecoded) { |
| if (decodeInfo.isTagged()) { |
| TaggingOption taggingOption = |
| decodeInfo.getTaggingOption(); |
| return theValue.taggedEncodingLength(taggingOption); |
| } else { |
| return theValue.encodingLength(); |
| } |
| } else { |
| return theValue.encodingLength(); |
| } |
| } |
| |
| return super.encodingLength(); |
| } |
| |
| @Override |
| protected int encodingBodyLength() { |
| Asn1Encodeable theValue = (Asn1Encodeable) getValue(); |
| |
| if (theValue == null) { |
| return 0; |
| } |
| |
| return -1; // Indicate error, shouldn't be here. |
| } |
| |
| @Override |
| public void decode(ByteBuffer content) throws IOException { |
| setValue(null); |
| |
| super.decode(content); |
| } |
| |
| @Override |
| public void decode(Asn1ParseResult parseResult) throws IOException { |
| // Avoid the tag checking here. |
| decodeBody(parseResult); |
| } |
| |
| @Override |
| protected void decodeBody(Asn1ParseResult parseResult) throws IOException { |
| this.parseResult = parseResult; |
| blindlyDecode(); |
| } |
| |
| private void blindlyDecode() throws IOException { |
| Asn1Type anyValue = Asn1Converter.convert(parseResult, false); |
| if (decodeInfo != null && decodeInfo.isTagged()) { |
| // Escape the wrapper |
| Asn1Constructed constructed = (Asn1Constructed) anyValue; |
| Asn1Type innerValue = constructed.getValue().get(0); |
| setValue(innerValue); |
| } else { |
| setValue(anyValue); |
| } |
| |
| isBlindlyDecoded = true; |
| } |
| |
| protected <T extends Asn1Type> T getValueAs(Class<T> t) { |
| Asn1Type value = getValue(); |
| if (value != null && !isBlindlyDecoded) { |
| return (T) value; |
| } |
| |
| typeAwareDecode(t); |
| |
| return (T) getValue(); |
| } |
| |
| private <T extends Asn1Type> void typeAwareDecode(Class<T> t) { |
| T result; |
| try { |
| result = t.newInstance(); |
| } catch (Exception e) { |
| throw new RuntimeException("No default constructor?", e); |
| } |
| |
| try { |
| if (parseResult.isContextSpecific()) { |
| Asn1Binder.bindWithTagging(parseResult, result, |
| decodeInfo.getTaggingOption()); |
| } else { |
| Asn1Binder.bind(parseResult, result); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException("Fully decoding failed", e); |
| } |
| |
| setValue(result); |
| isBlindlyDecoded = false; |
| } |
| |
| @Override |
| public void dumpWith(Asn1Dumper dumper, int indents) { |
| Asn1Type theValue = getValue(); |
| dumper.indent(indents).append("<Any>").newLine(); |
| //dumper.append(simpleInfo()).newLine(); |
| dumper.dumpType(indents, theValue); |
| } |
| } |
| |