nl.open.jwtdependency.org.bouncycastle.jce.provider.X509CertPairParser Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of java-jwt-nodependencies Show documentation

This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

The newest version!

package org.bouncycastle.jce.provider;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.cert.CertificateParsingException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.x509.CertificatePair;
import org.bouncycastle.x509.X509CertificatePair;
import org.bouncycastle.x509.X509StreamParserSpi;
import org.bouncycastle.x509.util.StreamParsingException;

public class X509CertPairParser
    extends X509StreamParserSpi
{
    private InputStream currentStream = null;

    private X509CertificatePair readDERCrossCertificatePair(
        InputStream in)
        throws IOException, CertificateParsingException
    {
        ASN1InputStream dIn = new ASN1InputStream(in);
        ASN1Sequence seq = (ASN1Sequence)dIn.readObject();
        CertificatePair pair = CertificatePair.getInstance(seq);
        return new X509CertificatePair(pair);
    }

    public void engineInit(InputStream in)
    {
        currentStream = in;

        if (!currentStream.markSupported())
        {
            currentStream = new BufferedInputStream(currentStream);
        }
    }

    public Object engineRead() throws StreamParsingException
    {
        try
        {

            currentStream.mark(10);
            int tag = currentStream.read();

            if (tag == -1)
            {
                return null;
            }

            currentStream.reset();
            return readDERCrossCertificatePair(currentStream);
        }
        catch (Exception e)
        {
            throw new StreamParsingException(e.toString(), e);
        }
    }

    public Collection engineReadAll() throws StreamParsingException
    {
        X509CertificatePair pair;
        List certs = new ArrayList();

        while ((pair = (X509CertificatePair)engineRead()) != null)
        {
            certs.add(pair);
        }

        return certs;
    }
}