/*************************************************************************
* (c) Copyright 2017 Hewlett Packard Enterprise Development Company LP
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
************************************************************************/
package com.eucalyptus.objectstorage.policy;
import static com.eucalyptus.objectstorage.policy.SignatureVersionKey.getAccessKeyCredential;
import com.eucalyptus.auth.AuthException;
import com.eucalyptus.auth.policy.condition.ConditionOp;
import com.eucalyptus.auth.policy.condition.StringConditionOp;
import com.eucalyptus.auth.policy.key.PolicyKey;
import com.eucalyptus.auth.principal.AccessKeyCredential;
import com.eucalyptus.context.Context;
import com.eucalyptus.context.Contexts;
import com.eucalyptus.http.MappingHttpRequest;
import com.eucalyptus.objectstorage.pipeline.handlers.ObjectStorageAuthenticationHandler;
import com.eucalyptus.objectstorage.pipeline.handlers.ObjectStorageFormPOSTAuthenticationHandler;
import com.eucalyptus.util.Exceptions;
import com.google.common.net.HttpHeaders;
import net.sf.json.JSONException;
/**
*
*/
@PolicyKey( AuthTypeKey.KEY_NAME )
public class AuthTypeKey implements ObjectStorageKey {
static final String KEY_NAME = "s3:authtype";
@Override
public String value( ) throws AuthException {
return getAuthType( );
}
@Override
public void validateConditionType( final Class<? extends ConditionOp> conditionClass ) throws JSONException {
if ( !StringConditionOp.class.isAssignableFrom( conditionClass ) ) {
throw new JSONException( KEY_NAME + " is not allowed in condition " + conditionClass.getName( ) + ". String conditions are required." );
}
}
@Override
public boolean canApply( final String action ) {
return action != null && action.startsWith( "s3:" );
}
private String getAuthType( ) throws AuthException {
final AccessKeyCredential credential = getAccessKeyCredential( );
if ( credential != null ) try { // ensure access key credential was used to authenticate
final Context context = Contexts.lookup( );
final MappingHttpRequest request = context.getHttpRequest( );
if ( context.getChannel( ).getPipeline( ).get( ObjectStorageFormPOSTAuthenticationHandler.class ) != null ) {
return "POST";
} else if ( context.getChannel( ).getPipeline( ).get( ObjectStorageAuthenticationHandler.class ) != null ) {
if ( request.containsHeader( HttpHeaders.AUTHORIZATION ) ) {
return "REST-HEADER";
} else {
return "REST-QUERY-STRING";
}
}
} catch ( final Exception e ) {
Exceptions.findAndRethrow( e, AuthException.class );
throw new AuthException( "Error getting value for s3 authType condition", e );
}
return null;
}
}