package org.bouncycastle.asn1.util;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.BERConstructedOctetString;
import org.bouncycastle.asn1.BERConstructedSequence;
import org.bouncycastle.asn1.BERSequence;
import org.bouncycastle.asn1.BERSet;
import org.bouncycastle.asn1.BERTaggedObject;
import org.bouncycastle.asn1.DERBMPString;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.DERBoolean;
import org.bouncycastle.asn1.DERConstructedSequence;
import org.bouncycastle.asn1.DERConstructedSet;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERGeneralizedTime;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERPrintableString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERSet;
import org.bouncycastle.asn1.DERT61String;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.asn1.DERUTCTime;
import org.bouncycastle.asn1.DERUTF8String;
import org.bouncycastle.asn1.DERUnknownTag;
import org.bouncycastle.asn1.DERVisibleString;
import org.bouncycastle.asn1.DERApplicationSpecific;
import org.bouncycastle.asn1.DERTags;
import org.bouncycastle.asn1.BERApplicationSpecific;
import org.bouncycastle.util.encoders.Hex;
import java.util.Enumeration;
import java.io.IOException;
public class ASN1Dump
{
private static final String TAB = " ";
private static final int SAMPLE_SIZE = 32;
/**
* dump a DER object as a formatted string with indentation
*
* @param obj the DERObject to be dumped out.
*/
static String _dumpAsString(
String indent,
boolean verbose,
DERObject obj)
{
String nl = System.getProperty("line.separator");
if (obj instanceof ASN1Sequence)
{
StringBuffer buf = new StringBuffer();
Enumeration e = ((ASN1Sequence)obj).getObjects();
String tab = indent + TAB;
buf.append(indent);
if (obj instanceof BERConstructedSequence)
{
buf.append("BER ConstructedSequence");
}
else if (obj instanceof DERConstructedSequence)
{
buf.append("DER ConstructedSequence");
}
else if (obj instanceof BERSequence)
{
buf.append("BER Sequence");
}
else if (obj instanceof DERSequence)
{
buf.append("DER Sequence");
}
else
{
buf.append("Sequence");
}
buf.append(nl);
while (e.hasMoreElements())
{
Object o = e.nextElement();
if (o == null || o.equals(new DERNull()))
{
buf.append(tab);
buf.append("NULL");
buf.append(nl);
}
else if (o instanceof DERObject)
{
buf.append(_dumpAsString(tab, verbose, (DERObject)o));
}
else
{
buf.append(_dumpAsString(tab, verbose, ((DEREncodable)o).getDERObject()));
}
}
return buf.toString();
}
else if (obj instanceof DERTaggedObject)
{
StringBuffer buf = new StringBuffer();
String tab = indent + TAB;
buf.append(indent);
if (obj instanceof BERTaggedObject)
{
buf.append("BER Tagged [");
}
else
{
buf.append("Tagged [");
}
DERTaggedObject o = (DERTaggedObject)obj;
buf.append(Integer.toString(o.getTagNo()));
buf.append(']');
if (!o.isExplicit())
{
buf.append(" IMPLICIT ");
}
buf.append(nl);
if (o.isEmpty())
{
buf.append(tab);
buf.append("EMPTY");
buf.append(nl);
}
else
{
buf.append(_dumpAsString(tab, verbose, o.getObject()));
}
return buf.toString();
}
else if (obj instanceof DERConstructedSet)
{
StringBuffer buf = new StringBuffer();
Enumeration e = ((ASN1Set)obj).getObjects();
String tab = indent + TAB;
buf.append(indent);
buf.append("ConstructedSet");
buf.append(nl);
while (e.hasMoreElements())
{
Object o = e.nextElement();
if (o == null)
{
buf.append(tab);
buf.append("NULL");
buf.append(nl);
}
else if (o instanceof DERObject)
{
buf.append(_dumpAsString(tab, verbose, (DERObject)o));
}
else
{
buf.append(_dumpAsString(tab, verbose, ((DEREncodable)o).getDERObject()));
}
}
return buf.toString();
}
else if (obj instanceof BERSet)
{
StringBuffer buf = new StringBuffer();
Enumeration e = ((ASN1Set)obj).getObjects();
String tab = indent + TAB;
buf.append(indent);
buf.append("BER Set");
buf.append(nl);
while (e.hasMoreElements())
{
Object o = e.nextElement();
if (o == null)
{
buf.append(tab);
buf.append("NULL");
buf.append(nl);
}
else if (o instanceof DERObject)
{
buf.append(_dumpAsString(tab, verbose, (DERObject)o));
}
else
{
buf.append(_dumpAsString(tab, verbose, ((DEREncodable)o).getDERObject()));
}
}
return buf.toString();
}
else if (obj instanceof DERSet)
{
StringBuffer buf = new StringBuffer();
Enumeration e = ((ASN1Set)obj).getObjects();
String tab = indent + TAB;
buf.append(indent);
buf.append("DER Set");
buf.append(nl);
while (e.hasMoreElements())
{
Object o = e.nextElement();
if (o == null)
{
buf.append(tab);
buf.append("NULL");
buf.append(nl);
}
else if (o instanceof DERObject)
{
buf.append(_dumpAsString(tab, verbose, (DERObject)o));
}
else
{
buf.append(_dumpAsString(tab, verbose, ((DEREncodable)o).getDERObject()));
}
}
return buf.toString();
}
else if (obj instanceof DERObjectIdentifier)
{
return indent + "ObjectIdentifier(" + ((DERObjectIdentifier)obj).getId() + ")" + nl;
}
else if (obj instanceof DERBoolean)
{
return indent + "Boolean(" + ((DERBoolean)obj).isTrue() + ")" + nl;
}
else if (obj instanceof DERInteger)
{
return indent + "Integer(" + ((DERInteger)obj).getValue() + ")" + nl;
}
else if (obj instanceof BERConstructedOctetString)
{
ASN1OctetString oct = (ASN1OctetString)obj;
if (verbose)
{
return indent + "BER Constructed Octet String" + "[" + oct.getOctets().length + "] " + dumpBinaryDataAsString(indent, oct.getOctets()) + nl;
}
return indent + "BER Constructed Octet String" + "[" + oct.getOctets().length + "] " + nl;
}
else if (obj instanceof DEROctetString)
{
ASN1OctetString oct = (ASN1OctetString)obj;
if (verbose)
{
return indent + "DER Octet String" + "[" + oct.getOctets().length + "] " + dumpBinaryDataAsString(indent, oct.getOctets()) + nl;
}
return indent + "DER Octet String" + "[" + oct.getOctets().length + "] " + nl;
}
else if (obj instanceof DERBitString)
{
DERBitString bt = (DERBitString)obj;
if (verbose)
{
return indent + "DER Bit String" + "[" + bt.getBytes().length + ", " + bt.getPadBits() + "] " + dumpBinaryDataAsString(indent, bt.getBytes()) + nl;
}
return indent + "DER Bit String" + "[" + bt.getBytes().length + ", " + bt.getPadBits() + "] " + nl;
}
else if (obj instanceof DERIA5String)
{
return indent + "IA5String(" + ((DERIA5String)obj).getString() + ") " + nl;
}
else if (obj instanceof DERUTF8String)
{
return indent + "UTF8String(" + ((DERUTF8String)obj).getString() + ") " + nl;
}
else if (obj instanceof DERPrintableString)
{
return indent + "PrintableString(" + ((DERPrintableString)obj).getString() + ") " + nl;
}
else if (obj instanceof DERVisibleString)
{
return indent + "VisibleString(" + ((DERVisibleString)obj).getString() + ") " + nl;
}
else if (obj instanceof DERBMPString)
{
return indent + "BMPString(" + ((DERBMPString)obj).getString() + ") " + nl;
}
else if (obj instanceof DERT61String)
{
return indent + "T61String(" + ((DERT61String)obj).getString() + ") " + nl;
}
else if (obj instanceof DERUTCTime)
{
return indent + "UTCTime(" + ((DERUTCTime)obj).getTime() + ") " + nl;
}
else if (obj instanceof DERGeneralizedTime)
{
return indent + "GeneralizedTime(" + ((DERGeneralizedTime)obj).getTime() + ") " + nl;
}
else if (obj instanceof DERUnknownTag)
{
return indent + "Unknown " + Integer.toString(((DERUnknownTag)obj).getTag(), 16) + " " + new String(Hex.encode(((DERUnknownTag)obj).getData())) + nl;
}
else if (obj instanceof BERApplicationSpecific)
{
return outputApplicationSpecific("BER", indent, verbose, obj, nl);
}
else if (obj instanceof DERApplicationSpecific)
{
return outputApplicationSpecific("DER", indent, verbose, obj, nl);
}
else
{
return indent + obj.toString() + nl;
}
}
private static String outputApplicationSpecific(String type, String indent, boolean verbose, DERObject obj, String nl)
{
DERApplicationSpecific app = (DERApplicationSpecific)obj;
StringBuffer buf = new StringBuffer();
if (app.isConstructed())
{
try
{
ASN1Sequence s = ASN1Sequence.getInstance(app.getObject(DERTags.SEQUENCE));
buf.append(indent + type + " ApplicationSpecific[" + app.getApplicationTag() + "]" + nl);
for (Enumeration e = s.getObjects(); e.hasMoreElements();)
{
buf.append(_dumpAsString(indent + TAB, verbose, (DERObject)e.nextElement()));
}
}
catch (IOException e)
{
buf.append(e);
}
return buf.toString();
}
return indent + type + " ApplicationSpecific[" + app.getApplicationTag() + "] (" + new String(Hex.encode(app.getContents())) + ")" + nl;
}
/**
* dump out a DER object as a formatted string, in non-verbose mode.
*
* @param obj the DERObject to be dumped out.
* @return the resulting string.
*/
public static String dumpAsString(
Object obj)
{
return dumpAsString(obj, false);
}
/**
* Dump out the object as a string.
*
* @param obj the object to be dumped
* @param verbose if true, dump out the contents of octet and bit strings.
* @return the resulting string.
*/
public static String dumpAsString(
Object obj,
boolean verbose)
{
if (obj instanceof DERObject)
{
return _dumpAsString("", verbose, (DERObject)obj);
}
else if (obj instanceof DEREncodable)
{
return _dumpAsString("", verbose, ((DEREncodable)obj).getDERObject());
}
return "unknown object type " + obj.toString();
}
private static String dumpBinaryDataAsString(String indent, byte[] bytes)
{
String nl = System.getProperty("line.separator");
StringBuffer buf = new StringBuffer();
indent += TAB;
buf.append(nl);
for (int i = 0; i < bytes.length; i += SAMPLE_SIZE)
{
if (bytes.length - i > SAMPLE_SIZE)
{
buf.append(indent);
buf.append(new String(Hex.encode(bytes, i, SAMPLE_SIZE)));
buf.append(TAB);
buf.append(calculateAscString(bytes, i, SAMPLE_SIZE));
buf.append(nl);
}
else
{
buf.append(indent);
buf.append(new String(Hex.encode(bytes, i, bytes.length - i)));
for (int j = bytes.length - i; j != SAMPLE_SIZE; j++)
{
buf.append(" ");
}
buf.append(TAB);
buf.append(calculateAscString(bytes, i, bytes.length - i));
buf.append(nl);
}
}
return buf.toString();
}
private static String calculateAscString(byte[] bytes, int off, int len)
{
StringBuffer buf = new StringBuffer();
for (int i = off; i != off + len; i++)
{
if (bytes[i] >= ' ' && bytes[i] <= '~')
{
buf.append((char)bytes[i]);
}
}
return buf.toString();
}
}