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package com.netscape.cmscore.realm;
import java.security.Principal;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import netscape.security.x509.X509CertImpl;
import org.apache.catalina.realm.RealmBase;
import com.netscape.certsrv.apps.CMS;
import com.netscape.certsrv.authentication.IAuthManager;
import com.netscape.certsrv.authentication.IAuthSubsystem;
import com.netscape.certsrv.authentication.IAuthToken;
import com.netscape.certsrv.usrgrp.EUsrGrpException;
import com.netscape.certsrv.usrgrp.IGroup;
import com.netscape.certsrv.usrgrp.IUGSubsystem;
import com.netscape.certsrv.usrgrp.IUser;
import com.netscape.cms.servlet.common.AuthCredentials;
import com.netscape.cmscore.authentication.CertUserDBAuthentication;
import com.netscape.cmscore.authentication.PasswdUserDBAuthentication;
/**
* PKI Realm
*
* This realm provides an authentication service against PKI user database.
* The realm also provides an authorization service that validates request
* URL's against the access control list defined in the internal database.
*/
public class PKIRealm extends RealmBase {
@Override
protected String getName() {
return "PKIRealm";
}
@Override
public Principal authenticate(String username, String password) {
logDebug("Authenticating username "+username+" with password.");
try {
IAuthSubsystem authSub = (IAuthSubsystem) CMS.getSubsystem(CMS.SUBSYSTEM_AUTH);
IAuthManager authMgr = authSub.getAuthManager(IAuthSubsystem.PASSWDUSERDB_AUTHMGR_ID);
AuthCredentials creds = new AuthCredentials();
creds.set(PasswdUserDBAuthentication.CRED_UID, username);
creds.set(PasswdUserDBAuthentication.CRED_PWD, password);
IAuthToken authToken = authMgr.authenticate(creds); // throws exception if authentication fails
return getPrincipal(username, authToken);
} catch (Throwable e) {
e.printStackTrace();
}
return null;
}
@Override
public Principal authenticate(final X509Certificate certs[]) {
logDebug("Authenticating certificate chain:");
try {
X509CertImpl certImpls[] = new X509CertImpl[certs.length];
for (int i=0; i<certs.length; i++) {
X509Certificate cert = certs[i];
logDebug(" "+cert.getSubjectDN());
// Convert sun.security.x509.X509CertImpl to netscape.security.x509.X509CertImpl
certImpls[i] = new X509CertImpl(cert.getEncoded());
}
IAuthSubsystem authSub = (IAuthSubsystem) CMS.getSubsystem(CMS.SUBSYSTEM_AUTH);
IAuthManager authMgr = authSub.getAuthManager(IAuthSubsystem.CERTUSERDB_AUTHMGR_ID);
AuthCredentials creds = new AuthCredentials();
creds.set(CertUserDBAuthentication.CRED_CERT, certImpls);
IAuthToken authToken = authMgr.authenticate(creds); // throws exception if authentication fails
String username = authToken.getInString(CertUserDBAuthentication.TOKEN_USERID);
logDebug("User ID: "+username);
return getPrincipal(username, authToken);
} catch (Throwable e) {
e.printStackTrace();
}
return null;
}
@Override
protected Principal getPrincipal(String username) {
return getPrincipal(username, (IAuthToken)null);
}
protected Principal getPrincipal(String username, IAuthToken authToken) {
try {
IUser user = getUser(username);
return getPrincipal(user, authToken);
} catch (Throwable e) {
e.printStackTrace();
return null;
}
}
protected Principal getPrincipal(IUser user, IAuthToken authToken) throws EUsrGrpException {
List<String> roles = getRoles(user);
return new PKIPrincipal(user.getUserID(), null, roles, authToken);
}
protected IUser getUser(String username) throws EUsrGrpException {
IUGSubsystem ugSub = (IUGSubsystem) CMS.getSubsystem(CMS.SUBSYSTEM_UG);
IUser user = ugSub.getUser(username);
logDebug("User DN: "+user.getUserDN());
return user;
}
protected List<String> getRoles(IUser user) throws EUsrGrpException {
List<String> roles = new ArrayList<String>();
IUGSubsystem ugSub = (IUGSubsystem) CMS.getSubsystem(CMS.SUBSYSTEM_UG);
Enumeration<IGroup> groups = ugSub.findGroupsByUser(user.getUserDN());
logDebug("Roles:");
while (groups.hasMoreElements()) {
IGroup group = groups.nextElement();
String name = group.getName();
logDebug(" "+name);
roles.add(name);
}
return roles;
}
@Override
protected String getPassword(String username) {
return null;
}
/*
* TODO: Figure out how to do real logging
*/
public void logErr(String msg) {
System.err.println(msg);
}
public void logDebug(String msg) {
System.out.println("PKIRealm: "+msg);
}
}
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