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// --- BEGIN COPYRIGHT BLOCK ---
// 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 2 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmscore.extensions;
import java.util.Hashtable;
import java.util.Enumeration;
import netscape.security.x509.Extension;
import netscape.security.util.ObjectIdentifier;
import com.netscape.certsrv.base.IConfigStore;
import com.netscape.certsrv.base.EBaseException;
import com.netscape.certsrv.base.ISubsystem;
import com.netscape.certsrv.apps.CMS;
import com.netscape.certsrv.extensions.*;
/**
* Loads extension classes from configuration file and return
* for a given extension name or OID.
*/
public class CMSExtensionsMap implements ISubsystem {
public static String ID = "extensions";
private static CMSExtensionsMap mInstance = new CMSExtensionsMap();
public static final CMSExtensionsMap getInstance() {
return mInstance;
}
private CMSExtensionsMap() {
}
private static final String PROP_CLASS = "class";
private Hashtable mName2Ext = new Hashtable();
private Hashtable mOID2Ext = new Hashtable();
private ISubsystem mOwner = null;
private IConfigStore mConfig = null;
/**
* Create extensions from configuration store.
* @param config the configuration store.
*/
public void init(ISubsystem owner, IConfigStore config)
throws EBaseException {
mOwner = owner;
mConfig = config;
Enumeration sstores = mConfig.getSubStoreNames();
while (sstores.hasMoreElements()) {
String name = (String) sstores.nextElement();
IConfigStore c = mConfig.getSubStore(name);
String className = c.getString(PROP_CLASS);
ICMSExtension ext = null;
try {
ext = (ICMSExtension) Class.forName(className).newInstance();
ext.init(this, c);
addExt(ext);
} catch (ClassNotFoundException e) {
throw new EExtensionsException(
CMS.getUserMessage("CMS_EXTENSION_CLASS_NOT_FOUND", className));
} catch (IllegalAccessException e) {
throw new EExtensionsException(
CMS.getUserMessage("CMS_EXTENSION_INSTANTIATE_ERROR",
className, e.toString()));
} catch (InstantiationException e) {
throw new EExtensionsException(
CMS.getUserMessage("CMS_EXTENSION_INSTANTIATE_ERROR",
className, e.toString()));
} catch (ClassCastException e) {
throw new EExtensionsException(
CMS.getUserMessage("CMS_EXTENSION_INVALID_IMPL", className));
}
}
}
public void addExt(ICMSExtension ext) throws EBaseException {
String name = ext.getName();
ObjectIdentifier oid = ext.getOID();
if (name == null || oid == null) {
throw new EExtensionsException(
CMS.getUserMessage("CMS_EXTENSION_INCORRECT_IMPL",
ext.getClass().getName()));
}
mName2Ext.put(name, ext);
mOID2Ext.put(oid.toString(), ext);
}
/**
* startup - does nothing.
*/
public void startup() throws EBaseException {
}
/**
* shutdown - does nothing.
*/
public void shutdown() {
}
/**
* Get configuration store.
*/
public IConfigStore getConfigStore() {
return mConfig;
}
/**
* Returns subsystem ID
*/
public String getId() {
return ID;
}
/**
* sets subsystem ID
*/
public void setId(String Id) {
}
/**
* Get the extension class by name.
* @param name name of the extension
* @return the extension class.
*/
public ICMSExtension getByName(String name) {
return (ICMSExtension) mName2Ext.get(name);
}
/**
* Get the extension class by its OID.
* @param oid - the OID of the extension.
* @return the extension class.
*/
public ICMSExtension getByOID(ObjectIdentifier oid) {
return (ICMSExtension) mOID2Ext.get(oid.toString());
}
}
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