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    /*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
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 * elects to include this software in this distribution under the [CDDL or GPL
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 */

package com.sun.enterprise.security.webservices;

import com.sun.enterprise.deployment.ServiceReferenceDescriptor;
import com.sun.enterprise.deployment.WebServiceEndpoint;
import com.sun.enterprise.deployment.runtime.common.MessageSecurityBindingDescriptor;
import com.sun.enterprise.security.jauth.AuthException;
import com.sun.enterprise.security.web.integration.WebPrincipal;
import com.sun.web.security.RealmAdapter;
import com.sun.xml.rpc.spi.runtime.SOAPMessageContext;
import com.sun.xml.rpc.spi.runtime.SystemHandlerDelegate;
import com.sun.xml.ws.assembler.ClientPipelineHook;
import java.security.cert.X509Certificate;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.servlet.http.HttpServletRequest;
import javax.xml.namespace.QName;
import javax.xml.rpc.handler.HandlerInfo;
import org.glassfish.webservices.Ejb2RuntimeEndpointInfo;
import org.glassfish.webservices.EjbRuntimeEndpointInfo;
import org.glassfish.webservices.SecurityService;
import org.glassfish.webservices.WebServiceContextImpl;

import org.jvnet.hk2.annotations.Service;
import javax.inject.Singleton;

import com.sun.enterprise.security.SecurityContext;
import java.security.Principal;
import org.apache.catalina.Globals;
import org.apache.catalina.util.Base64;
import org.glassfish.webservices.monitoring.AuthenticationListener;
import org.glassfish.webservices.monitoring.Endpoint;
import org.glassfish.webservices.monitoring.WebServiceEngineImpl;
import com.sun.enterprise.security.ee.audit.AppServerAuditManager;
import com.sun.enterprise.security.authorize.PolicyContextHandlerImpl;
import com.sun.enterprise.security.jauth.ServerAuthContext;
import com.sun.enterprise.security.jmac.provider.ClientAuthConfig;
import com.sun.enterprise.security.jmac.provider.ServerAuthConfig;
import com.sun.enterprise.web.WebModule;
import com.sun.xml.rpc.spi.runtime.StreamingHandler;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import javax.security.jacc.PolicyContext;
import javax.xml.soap.SOAPMessage;

/**
 *
 * @author Kumar
 */
@Service
@Singleton
public class SecurityServiceImpl implements SecurityService {
    
    @Inject
    private AppServerAuditManager auditManager;

    protected static final Logger _logger = LogUtils.getLogger();
    
    private static final String AUTHORIZATION_HEADER = "authorization";

    private static ThreadLocal> req = new ThreadLocal>();
 
    public Object mergeSOAPMessageSecurityPolicies(MessageSecurityBindingDescriptor desc) {
        try {
	    // merge message security policy from domain.xml and sun-specific
	    // deployment descriptor
	     ServerAuthConfig 
                     serverAuthConfig =
                     com.sun.enterprise.security.jmac.provider.ServerAuthConfig.getConfig
		(com.sun.enterprise.security.jauth.AuthConfig.SOAP,
		 desc,
		 null);
             return serverAuthConfig;
	} catch (Exception ae) {
            _logger.log(Level.SEVERE, LogUtils.EJB_SEC_CONFIG_FAILURE, ae);
	}
        return null;
    }

    public boolean doSecurity(HttpServletRequest hreq, EjbRuntimeEndpointInfo epInfo, String realmName, WebServiceContextImpl context) {
        //BUG2263 - Clear the value of UserPrincipal from previous request
        //If authentication succeeds, the proper value will be set later in
        //this method.
        boolean authenticated = false;
        try {
            //calling this for a GET request WSDL query etc can cause problems
            String method = hreq.getMethod();
//            if (method.equals("POST") /*&& hreq.getUserPrincipal() == null*/) {
//                resetSecurityContext();
//            }

            if (context != null) {
                context.setUserPrincipal(null);
            }

            WebServiceEndpoint endpoint = epInfo.getEndpoint();

            String rawAuthInfo = hreq.getHeader(AUTHORIZATION_HEADER);
            if (method.equals("GET") || !endpoint.hasAuthMethod()) {
            //if (method.equals("GET") || rawAuthInfo == null) {
                authenticated = true;
                return true;
            }

            WebPrincipal webPrincipal = null;
            String endpointName = endpoint.getEndpointName();
            if (endpoint.hasBasicAuth() || rawAuthInfo != null) {
                //String rawAuthInfo = hreq.getHeader(AUTHORIZATION_HEADER);
                if (rawAuthInfo == null) {
                    sendAuthenticationEvents(false, hreq.getRequestURI(), null);
                    authenticated = false;
                    return false;
                }

                List usernamePassword =
                        parseUsernameAndPassword(rawAuthInfo);
                if (usernamePassword != null) {
                    webPrincipal = new WebPrincipal((String)usernamePassword.get(0), (char[])usernamePassword.get(1), SecurityContext.init());
                } else {
                    _logger.log(Level.WARNING, LogUtils.BASIC_AUTH_ERROR, endpointName);
                }
            } else {
                //org.apache.coyote.request.X509Certificate
                X509Certificate certs[] = (X509Certificate[]) hreq.getAttribute(Globals.CERTIFICATES_ATTR);
                if ((certs == null) || (certs.length < 1)) {
                    certs = (X509Certificate[]) hreq.getAttribute(Globals.SSL_CERTIFICATE_ATTR);
                }

                if (certs != null) {
                    webPrincipal = new WebPrincipal(certs, SecurityContext.init());
                } else {
                    _logger.log(Level.WARNING, LogUtils.CLIENT_CERT_ERROR, endpointName);
                }

            }

            if (webPrincipal == null) {
                sendAuthenticationEvents(false, hreq.getRequestURI(), null);
                return authenticated;
            }

            RealmAdapter ra = new RealmAdapter(realmName,endpoint.getBundleDescriptor().getModuleID());
            authenticated = ra.authenticate(webPrincipal);
            if (authenticated == false) {
                sendAuthenticationEvents(false, hreq.getRequestURI(), webPrincipal);
                if (_logger.isLoggable(Level.FINE)) {
                    _logger.fine("authentication failed for " + endpointName);
                }
            } else {
                sendAuthenticationEvents(true, hreq.getRequestURI(), webPrincipal);
            }
            
            if (epInfo instanceof Ejb2RuntimeEndpointInfo) {
                // For JAXRPC based EJb endpoints the rest of the steps are not needed
                return authenticated;
            }
            //Setting if userPrincipal in WSCtxt applies for JAXWS endpoints only
            epInfo.prepareInvocation(false);
            WebServiceContextImpl ctxt = (WebServiceContextImpl) epInfo.getWebServiceContext();
            ctxt.setUserPrincipal(webPrincipal);

        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (auditManager != null && auditManager.isAuditOn()) {
                auditManager.ejbAsWebServiceInvocation(
                        epInfo.getEndpoint().getEndpointName(), authenticated);
            }
        }
        return authenticated;
    }

    private List parseUsernameAndPassword(String rawAuthInfo) {

        List usernamePassword = null;
        if ( (rawAuthInfo != null) && 
             (rawAuthInfo.startsWith("Basic ")) ) {
            String authString = rawAuthInfo.substring(6).trim();
            // Decode and parse the authorization credentials
            String unencoded =
                new String(Base64.decode(authString.getBytes()));
            int colon = unencoded.indexOf(':');
            if (colon > 0) {
                usernamePassword = new ArrayList();
                usernamePassword.add(unencoded.substring(0, colon).trim());
                usernamePassword.add(unencoded.substring(colon + 1).trim().toCharArray());
            }
        }
        return usernamePassword;
    }

    
     private void sendAuthenticationEvents(boolean success,
            String url, Principal principal) {
        
        Endpoint endpoint = WebServiceEngineImpl.getInstance().getEndpoint(url);
        if (endpoint==null) {
            return;
        }
        for (AuthenticationListener listener : WebServiceEngineImpl.getInstance().getAuthListeners()) {
            if (success) {
                listener.authSucess(endpoint.getDescriptor().getBundleDescriptor(),
                        endpoint, principal);
            } else {
                listener.authFailure(endpoint.getDescriptor().getBundleDescriptor(),
                        endpoint, principal);
            }
        }
    }    
        
    public void resetSecurityContext() {
        SecurityContext.setUnauthenticatedContext();
    }

    public void resetPolicyContext() {
       ((PolicyContextHandlerImpl)PolicyContextHandlerImpl.getInstance()).reset();
       PolicyContext.setContextID(null);
    }


    public SystemHandlerDelegate getSecurityHandler(WebServiceEndpoint endpoint) {

        if (!endpoint.hasAuthMethod()) {
            try {
                ServerAuthConfig config = ServerAuthConfig.getConfig(com.sun.enterprise.security.jauth.AuthConfig.SOAP,
                        endpoint.getMessageSecurityBinding(),
                        null);
                if (config != null) {
                    return new ServletSystemHandlerDelegate(config, endpoint);
                }
            } catch (Exception e) {
                _logger.log(Level.SEVERE, LogUtils.SERVLET_SEC_CONFIG_FAILURE, e);
            }
        }
        return null;
    }

    public boolean validateRequest(Object serverAuthConfig, StreamingHandler implementor, SOAPMessageContext context) {
        ServerAuthConfig authConfig = (ServerAuthConfig) serverAuthConfig;
        if (authConfig != null) {
            ServerAuthContext sAC = authConfig.getAuthContext((StreamingHandler) implementor, context.getMessage());
            req.set(new WeakReference(context.getMessage()));
            if (sAC != null) {
                try {
                    return WebServiceSecurity.validateRequest(context, sAC);
                } catch (AuthException ex) {
                    _logger.log(Level.SEVERE, LogUtils.EXCEPTION_THROWN, ex);
                    if (req.get() != null) {
                        req.get().clear();
                        req.set(null);
                    }
                    throw new RuntimeException(ex);
                }
            }
        }
        return true;
    }

    public void secureResponse(Object serverAuthConfig, StreamingHandler implementor,SOAPMessageContext msgContext) {
        if (serverAuthConfig != null) {
            ServerAuthConfig config = (ServerAuthConfig)serverAuthConfig;
            SOAPMessage reqmsg = (req.get() != null) ? req.get().get() : msgContext.getMessage();
            try{
                ServerAuthContext sAC = config.getAuthContext(implementor, reqmsg);
                if (sAC != null) {
                    try {
                        WebServiceSecurity.secureResponse(msgContext, sAC);
                    } catch (AuthException ex) {
                        _logger.log(Level.SEVERE, LogUtils.EXCEPTION_THROWN, ex);
                        throw new RuntimeException(ex);
                    }
                }
            }finally{
                if(req.get() != null){
                    req.get().clear();
                    req.set(null);
                }
            }

        }
    }

    public HandlerInfo getMessageSecurityHandler(MessageSecurityBindingDescriptor binding, QName serviceName) {
        HandlerInfo rvalue = null;
        try {
            ClientAuthConfig config = ClientAuthConfig.getConfig(com.sun.enterprise.security.jauth.AuthConfig.SOAP, binding, null);
            if (config != null) {
                // get understood headers from auth module.
                QName[] headers = config.getMechanisms();
                Map properties = new HashMap();
                properties.put(MessageLayerClientHandler.CLIENT_AUTH_CONFIG, config);
                properties.put(javax.xml.ws.handler.MessageContext.WSDL_SERVICE, serviceName);
                rvalue = new HandlerInfo(MessageLayerClientHandler.class, properties, headers);
            }

        } catch (Exception ex) {
            _logger.log(Level.SEVERE, LogUtils.EXCEPTION_THROWN, ex);
            throw new RuntimeException(ex);
        }
        return rvalue;
    }

    @Override
    public ClientPipelineHook getClientPipelineHook(ServiceReferenceDescriptor ref) {
        return new ClientPipeCreator(ref);
    }

      public Principal getUserPrincipal(boolean isWeb) {
         //This is a servlet endpoint
        SecurityContext ctx = SecurityContext.getCurrent();
        if (ctx == null) {
            return null;
        }
        if (ctx.didServerGenerateCredentials()) {
            if (isWeb) {
                return null;
            }
        }
        return ctx.getCallerPrincipal();
    }

    public boolean isUserInRole(WebModule webModule, Principal principal, String servletName, String role) {
            if (webModule.getRealm() instanceof RealmAdapter) {
                RealmAdapter realmAdapter = (RealmAdapter)webModule.getRealm();
                return realmAdapter.hasRole(servletName, principal, role);
            }
        return false;
    }
}
    
    
    
    

    




    
    
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