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package jdeserialize;
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import java.io.*;
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import java.util.*;
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/**
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* <p>
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* This object contains embedded information about a serialization that failed, throwing
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* an exception. It includes the actual exception object (which was serialized by the
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* ObjectOutputStream) and the raw bytes of the stream data that was read before the
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* exception was recognized.
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* </p>
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*
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* <p>
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* For the mechanics of exception serialization, see the Object Serialization
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* Specification.
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* </p>
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*/
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public class exceptionstate extends contentbase {
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/**
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* The serialized exception object.
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*/
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public content exceptionobj;
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/**
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* <p>
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* An array of bytes representing the data read before the exception was encountered.
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* Generally, this starts with the first "tc" byte (cf. protocol spec), which is an
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* ObjectStreamConstants value and ends with 0x78 (the tc byte corresponding to
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* TC_EXCEPTION). However, this isn't guaranteed; it may include *more* data.
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* </p>
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*
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* <p>
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* In other words, this is the incomplete object that was being written while the
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* exception was caught by the ObjectOutputStream. It is not likely to be cleanly
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* parseable.
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* </p>
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*
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* <p>
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* The uncertainty centers around the fact that this data is gathered by jdeserialize
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* using a LoggerInputStream, and the underlying DataInputStream may have read more
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* than is necessary. In all tests conducted so far, the above description is
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* accurate.
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* </p>
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*/
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public byte[] streamdata;
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/**
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* Consturctor.
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* @param exobj the serialized exception object
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* @param data the array of stream bytes that led up to the exception
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*/
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public exceptionstate(content exobj, byte[] data) {
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super(contenttype.EXCEPTIONSTATE);
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this.exceptionobj = exobj;
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this.streamdata = data;
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this.handle = exobj.getHandle();
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}
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public String toString() {
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StringBuffer sb = new StringBuffer();
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sb.append("[exceptionstate object " + exceptionobj.toString() + " buflen " + streamdata.length);
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if(streamdata.length > 0) {
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for(int i = 0; i < streamdata.length; i++) {
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if((i % 16) == 0) {
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sb.append(jdeserialize.linesep).append(String.format("%7x: ", Integer.valueOf(i)));
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}
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sb.append(" ").append(jdeserialize.hexnoprefix(streamdata[i]));
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}
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sb.append(jdeserialize.linesep);
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}
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sb.append("]");
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return sb.toString();
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}
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}
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