package at.gv.egovernment.moa.spss.server.invoke;

import at.gv.egovernment.moa.spss.MOAException;
import at.gv.egovernment.moa.spss.api.Configurator;
import at.gv.egovernment.moa.spss.api.SignatureVerificationService;
import at.gv.egovernment.moa.spss.api.cmsverify.VerifyCMSSignatureRequest;
import at.gv.egovernment.moa.spss.api.cmsverify.VerifyCMSSignatureResponse;
import at.gv.egovernment.moa.spss.api.xmlverify.VerifyXMLSignatureRequest;
import at.gv.egovernment.moa.spss.api.xmlverify.VerifyXMLSignatureResponse;

/**
 * An implementation of the <code>SignatureVerificationService</code> using
 * the <code>XMLSignatureVerificationInvoker</code> and the
 * <code>CMSSignatureVerificationInvoker</code>.
 * 
 * @author Patrick Peck
 * @version $Id$
 */
public class SignatureVerificationServiceImpl
  extends SignatureVerificationService {

  /**
   * Verify a CMS signature.
   * 
   * @param request The <code>VerifyCMSSignatureRequest</code> containing 
   * information about the signature verification.
   * @return The result of the signature verification.
   * @throws MOAException An error occurred during signature verification.
   */
  public VerifyCMSSignatureResponse verifyCMSSignature(VerifyCMSSignatureRequest request)
    throws MOAException {

    CMSSignatureVerificationInvoker invoker =
      CMSSignatureVerificationInvoker.getInstance();
    VerifyCMSSignatureResponse response;

    try {
      Configurator.getInstance().init();
      ServiceContextUtils.setUpContexts();
      response = invoker.verifyCMSSignature(request);
      return response;
    } finally {
      ServiceContextUtils.tearDownContexts();
    }
  }

  /**
   * Verify an XML signature.
   * 
   * @param request The <code>VerifyXMLSignatureRequest</code> containinig
   * information about the signature verification.
   * @return The result of the signature verification.
   * @throws MOAException An error occurred during signature verification.
   */
  public VerifyXMLSignatureResponse verifyXMLSignature(VerifyXMLSignatureRequest request)
    throws MOAException {

    XMLSignatureVerificationInvoker invoker =
      XMLSignatureVerificationInvoker.getInstance();
    VerifyXMLSignatureResponse response;

    try {
      Configurator.getInstance().init();
      ServiceContextUtils.setUpContexts();
      response = invoker.verifyXMLSignature(request);
      return response;
    } finally {
      ServiceContextUtils.tearDownContexts();
    }
  }

}