text: /*
   * See the NOTICE file distributed with this work for additional
   * information regarding copyright ownership.
   *
   * This is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as
   * published by the Free Software Foundation; either version 2.1 of
   * the License, or (at your option) any later version.
   *
   * This software is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this software; if not, write to the Free
   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
   */
  package org.xwiki.rendering.signature.internal;
  
  import java.io.IOException;
  import java.security.GeneralSecurityException;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import org.xwiki.component.annotation.Component;
  import org.xwiki.crypto.pkix.CertificateProvider;
  import org.xwiki.crypto.signer.CMSSignedDataVerifier;
  import org.xwiki.crypto.signer.param.CMSSignedDataVerified;
  import org.xwiki.rendering.block.Block;
  import org.xwiki.rendering.block.MacroBlock;
  import org.xwiki.rendering.block.MacroMarkerBlock;
  import org.xwiki.rendering.signature.BlockSignatureVerifier;
  
  /**
   * Verify signature of {@link org.xwiki.rendering.block.MacroBlock}
   * and {@link org.xwiki.rendering.block.MacroMarkerBlock}.
   *
   * @version $Id: 04201baa08356d31a57107c2255018b253c1512a $
   * @since 6.1M2
   */
  @Component
  @Named("macro")
  @Singleton
  public class MacroBlockSignatureVerifier implements BlockSignatureVerifier
  {
      @Inject
      @Named("macro")
      private BlockDumper dumper;
  
      @Inject
      private CMSSignedDataVerifier verifier;
  
      @Override
      public CMSSignedDataVerified verify(byte[] signature, Block block, CertificateProvider certificateProvider)
          throws GeneralSecurityException, IOException
      {
          if (!isSupported(block)) {
              throw new IllegalArgumentException("Unsupported block [" + block.getClass().getName() + "].");
          }
  
          return verifier.verify(signature, dumper.dump(block), certificateProvider);
      }
  
      @Override
      public boolean isSupported(Block block)
      {
          return (block instanceof MacroBlock || block instanceof MacroMarkerBlock);
      }
  
  }
  
  