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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) 2012 Red Hat, Inc.
//All rights reserved.
//--- END COPYRIGHT BLOCK ---
package com.netscape.cms.authorization;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Method;
import java.security.Principal;
import java.util.Properties;
import javax.servlet.ServletContext;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.SecurityContext;
import javax.ws.rs.ext.Provider;
import org.jboss.resteasy.core.ResourceMethodInvoker;
import org.jboss.resteasy.spi.Failure;
import com.netscape.certsrv.acls.ACLMapping;
import com.netscape.certsrv.apps.CMS;
import com.netscape.certsrv.authentication.IAuthToken;
import com.netscape.certsrv.authorization.AuthzToken;
import com.netscape.certsrv.authorization.EAuthzAccessDenied;
import com.netscape.certsrv.authorization.IAuthzSubsystem;
import com.netscape.certsrv.base.EBaseException;
import com.netscape.certsrv.base.ForbiddenException;
import com.netscape.cms.realm.PKIPrincipal;
/**
* @author Endi S. Dewata
*/
@Provider
public class ACLInterceptor implements ContainerRequestFilter {
Properties properties;
@Context
ServletContext servletContext;
@Context
SecurityContext securityContext;
public synchronized void loadProperties() throws IOException {
if (properties != null)
return;
properties = new Properties();
String context = servletContext.getContextPath();
String subsystem = context.startsWith("/") ? context.substring(1) : context;
// load default mapping
String defaultMapping = "/usr/share/pki/" + subsystem + "/conf/acl.properties";
CMS.debug("ACLInterceptor: loading " + defaultMapping);
try (FileReader in = new FileReader(defaultMapping)) {
properties.load(in);
}
// load custom mapping
File customMapping = new File(System.getProperty("catalina.base")
+ "/" + subsystem + "/conf/acl.properties");
CMS.debug("ACLInterceptor: checking " + customMapping);
if (customMapping.exists()) {
CMS.debug("ACLInterceptor: loading " + customMapping);
try (FileReader in = new FileReader(customMapping)) {
properties.load(in);
}
}
}
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
ResourceMethodInvoker methodInvoker = (ResourceMethodInvoker) requestContext
.getProperty("org.jboss.resteasy.core.ResourceMethodInvoker");
Method method = methodInvoker.getMethod();
Class<?> clazz = methodInvoker.getResourceClass();
CMS.debug("ACLInterceptor: " + clazz.getSimpleName() + "." + method.getName() + "()");
ACLMapping aclMapping = method.getAnnotation(ACLMapping.class);
// If not available, get ACL mapping for the class.
if (aclMapping == null) {
aclMapping = clazz.getAnnotation(ACLMapping.class);
}
// If still not available, it's unprotected, allow request.
if (aclMapping == null) {
CMS.debug("ACLInterceptor: No ACL mapping.");
return;
}
String name = aclMapping.value();
CMS.debug("ACLInterceptor: mapping: " + name);
Principal principal = securityContext.getUserPrincipal();
// If unauthenticated, reject request.
if (principal == null) {
CMS.debug("ACLInterceptor: No user principal provided.");
throw new ForbiddenException("No user principal provided.");
}
CMS.debug("ACLInterceptor: principal: " + principal.getName());
// If unrecognized principal, reject request.
if (!(principal instanceof PKIPrincipal)) {
CMS.debug("ACLInterceptor: Invalid user principal.");
throw new ForbiddenException("Invalid user principal.");
}
PKIPrincipal pkiPrincipal = (PKIPrincipal) principal;
IAuthToken authToken = pkiPrincipal.getAuthToken();
// If missing auth token, reject request.
if (authToken == null) {
CMS.debug("ACLInterceptor: No authorization token present.");
throw new ForbiddenException("No authorization token present.");
}
try {
loadProperties();
String value = properties.getProperty(name);
// If no property defined, allow request.
if (value == null) {
CMS.debug("ACLInterceptor: No ACL configuration.");
return;
}
String values[] = value.split(",");
// If invalid mapping, reject request.
if (values.length != 2) {
CMS.debug("ACLInterceptor: Invalid ACL mapping.");
throw new ForbiddenException("Invalid ACL mapping.");
}
CMS.debug("ACLInterceptor: ACL: " + value);
// Check authorization.
IAuthzSubsystem mAuthz = (IAuthzSubsystem) CMS.getSubsystem(CMS.SUBSYSTEM_AUTHZ);
AuthzToken authzToken = mAuthz.authorize(
"DirAclAuthz",
authToken,
values[0], // resource
values[1]); // operation
// If not authorized, reject request.
if (authzToken == null) {
CMS.debug("ACLInterceptor: No authorization token present.");
throw new ForbiddenException("No authorization token present.");
}
CMS.debug("ACLInterceptor: access granted");
} catch (EAuthzAccessDenied e) {
CMS.debug("ACLInterceptor: " + e.getMessage());
throw new ForbiddenException(e.toString());
} catch (IOException | EBaseException e) {
e.printStackTrace();
throw new Failure(e);
}
// Allow request.
return;
}
}
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