EncodingUtil.java

package org.cagrid.gaards.credentials;

import java.io.File;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.security.cert.X509Certificate;

import javax.xml.namespace.QName;

import org.apache.axis.utils.ClassUtils;
import org.apache.commons.io.FileUtils;
import org.cagrid.gaards.pki.CertUtil;
import org.cagrid.gaards.pki.KeyUtil;
import org.globus.gsi.GlobusCredential;


public class EncodingUtil {

    public static final String CLIENT_WSDD = "client-config.wsdd";
    public static final QName X509_CREDENTIAL = new QName("http://gaards.cagrid.org/credentials",
        "X509CredentialDescriptor");
    public static final QName DORIAN_USER_CREDENTIAL = new QName("http://gaards.cagrid.org/credentials",
        "DorianUserCredentialDescriptor");


    public static void serialize(File f, X509CredentialDescriptor des) throws Exception {
        String str = serialize(des);
        FileUtils.writeStringToFile(f, str);
    }


    public static String serialize(X509CredentialDescriptor des) throws Exception {
        if (des instanceof DorianUserCredentialDescriptor) {
            return serialize(DORIAN_USER_CREDENTIAL, des);
        } else {
            return serialize(X509_CREDENTIAL, des);
        }
    }


    public static X509CredentialDescriptor deserialize(File f) throws Exception {
        String str = FileUtils.readFileToString(f);
        return deserialize(str);
    }


    public static X509CredentialDescriptor encode(GlobusCredential cred) throws Exception {
        return encode(cred, new X509CredentialDescriptor());
    }


    public static X509CredentialDescriptor encode(GlobusCredential cred, X509CredentialDescriptor des) throws Exception {
        des.setIdentity(cred.getIdentity());
        EncodedCertificates list = new EncodedCertificates();
        X509Certificate[] chain = cred.getCertificateChain();
        if (chain != null) {
            String[] certs = new String[chain.length];
            for (int i = 0; i < chain.length; i++) {
                certs[i] = CertUtil.writeCertificate(chain[i]);
            }
            list.setEncodedCertificate(certs);
        }
        des.setEncodedCertificates(list);
        des.setEncodedKey(KeyUtil.writePrivateKey(cred.getPrivateKey(), (String) null));
        return des;
    }


    public static X509CredentialDescriptor deserialize(String s) throws Exception {
        InputStream resourceAsStream = ClassUtils.getResourceAsStream(EncodingUtil.class, CLIENT_WSDD);
        if (s.indexOf(DORIAN_USER_CREDENTIAL.getLocalPart()) != -1) {
            return gov.nih.nci.cagrid.common.Utils.deserializeObject(new StringReader(s),
                DorianUserCredentialDescriptor.class, resourceAsStream);
        } else {
            return gov.nih.nci.cagrid.common.Utils.deserializeObject(new StringReader(s),
                X509CredentialDescriptor.class, resourceAsStream);
        }
    }


    public static String serialize(QName ns, Object o) throws Exception {
        InputStream resourceAsStream = ClassUtils.getResourceAsStream(EncodingUtil.class, CLIENT_WSDD);
        StringWriter writer = new StringWriter();
        gov.nih.nci.cagrid.common.Utils.serializeObject(o, ns, writer, resourceAsStream);
        return writer.toString();
    }


    public static Object deserialize(String s, Class c) throws Exception {
        InputStream resourceAsStream = ClassUtils.getResourceAsStream(EncodingUtil.class, CLIENT_WSDD);
        return gov.nih.nci.cagrid.common.Utils.deserializeObject(new StringReader(s), c, resourceAsStream);
    }

}