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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.cms.evaluators;
import com.netscape.certsrv.base.*;
import com.netscape.certsrv.apps.*;
import com.netscape.certsrv.authentication.*;
import com.netscape.certsrv.acls.*;
import com.netscape.certsrv.evaluators.*;
import com.netscape.certsrv.usrgrp.*;
import com.netscape.certsrv.logging.*;
import com.netscape.certsrv.apps.*;
import com.netscape.certsrv.usrgrp.*;
import com.netscape.cmsutil.util.*;
/**
* A class represents a group acls evaluator.
* <P>
*
* @version $Revision$, $Date$
*/
public class GroupAccessEvaluator implements IAccessEvaluator {
private String mType = "group";
private IUGSubsystem mUG = null;
private String mDescription = "group membership evaluator";
private ILogger mLogger = CMS.getLogger();
/**
* Class constructor.
*/
public GroupAccessEvaluator() {
mUG = (IUGSubsystem) CMS.getSubsystem(CMS.SUBSYSTEM_UG);
if (mUG == null) {
log(ILogger.LL_FAILURE, CMS.getLogMessage("EVALUTOR_UG_NULL"));
}
}
/**
* initialization. nothing for now.
*/
public void init() {
CMS.debug("GroupAccessEvaluator: init");
}
/**
* gets the type name for this acl evaluator
* @return type for this acl evaluator: "group" or "at_group"
*/
public String getType() {
return mType;
}
/**
* gets the description for this acl evaluator
* @return description for this acl evaluator
*/
public String getDescription() {
return mDescription;
}
public String[] getSupportedOperators() {
String[] s = new String[2];
s[0] = "=";
s[1] = "!=";
return s;
}
/**
* evaluates uid in AuthToken to see if it has membership in
* group value
* @param authToken authentication token
* @param type must be "at_group"
* @param op must be "="
* @param value the group name
* @return true if AuthToken uid belongs to the group value,
* false otherwise
*/
public boolean evaluate(IAuthToken authToken, String type, String op, String value) {
if (type.equals(mType)) {
// should define "uid" at a common place
String uid = null;
uid = authToken.getInString("userid");
if (uid == null) {
uid = authToken.getInString("uid");
if (uid == null) {
CMS.debug("GroupAccessEvaluator: evaluate: uid null");
log(ILogger.LL_FAILURE, CMS.getLogMessage("EVALUTOR_UID_NULL"));
return false;
}
}
CMS.debug("GroupAccessEvaluator: evaluate: uid="+uid +" value="+value);
String groupname = authToken.getInString("gid");
if (groupname != null) {
CMS.debug("GroupAccessEvaluator: evaluate: authToken gid="+groupname);
if (op.equals("=")) {
return groupname.equals(Utils.stripQuotes(value));
} else if (op.equals("!=")) {
return !groupname.equals(Utils.stripQuotes(value));
}
} else {
CMS.debug("GroupAccessEvaluator: evaluate: no gid in authToken");
IUser id = null;
try {
id = mUG.getUser(uid);
} catch (EBaseException e) {
CMS.debug("GroupAccessEvaluator: " + e.toString());
return false;
}
if (op.equals("=")) {
return mUG.isMemberOf(id, Utils.stripQuotes(value));
} else if (op.equals("!=")) {
return !(mUG.isMemberOf(id, Utils.stripQuotes(value)));
}
}
}
return false;
}
/**
* evaluates uid in SessionContext to see if it has membership in
* group value
* @param type must be "group"
* @param op must be "="
* @param value the group name
* @return true if SessionContext uid belongs to the group value,
* false otherwise
*/
public boolean evaluate(String type, String op, String value) {
SessionContext mSC = SessionContext.getContext();
if (type.equals(mType)) {
IUser id = (IUser) mSC.get(SessionContext.USER);
if (id == null) {
log(ILogger.LL_FAILURE, CMS.getLogMessage("EVALUTOR_UID_NULL"));
return false;
}
if (op.equals("="))
return mUG.isMemberOf(id, Utils.stripQuotes(value));
else
return !(mUG.isMemberOf(id, Utils.stripQuotes(value)));
}
return false;
}
private void log(int level, String msg) {
if (mLogger == null)
return;
mLogger.log(ILogger.EV_SYSTEM, null, ILogger.S_ACLS,
level, "GroupAccessEvaluator: " + msg);
}
}
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