Network Deployment (Distributed operating systems), v8.0 > Develop and deploying applications > Develop web services - Security (WS-Security) > Develop applications that use Web Services Security > Develop message-level security for JAX-RPC web services

Develop web services clients that retrieve tokens from the JAAS Subject in an application

The security handlers are responsible for propagating security tokens. These security tokens are embedded in the SOAP security header and passed to downstream servers.

This information applies only to JAX-RPC Web services.

The security tokens are encapsulated in the implementation classes for the com.ibm.wsspi.wssecurity.auth.token.Token interface. We can retrieve the security token data from either a server application or a client application.

With a client application, the application serves as the request generator and the response consumer and runs as the Java EE client application. The consumer component for Web Services Security stores the security tokens that it receives in one of the properties of the MessageContext object for the current Web services call. We can retrieve a set of token objects through the javax.xml.rpc.Stub interface of that web services call. We must know which security tokens to retrieve and their token IDs in case multiple security tokens are included in the SOAP security header. Complete the following steps to retrieve the security token data from a client application:

Procedure

1. Use the com.ibm.wsspi.wssecurity.token.tokenPropergation key string to obtain the Hashtable for the tokens through a property value in the javax.xml.rpc.Stub interface. The following example shows how to obtain the Hashtable:

   java.util.Hashtable t;
   javax.xml.rpc.Service serv = …;
   MyWSPortType pt = (MyWSPortType)serv.getPort(MyWSPortType.class);
   t = (Hashtable)((javax.xml.rpc.Stub)pt)._getProperty(
   com.ibm.wsspi.wssecurity.Constants.WSSECURITY_TOKEN_PROPERGATION);
   

2. Search the targeting token objects in the Hashtable. Each token object in the Hashtable is set with its token ID as a key. We must have prior knowledge of the security token IDs to retrieve the security tokens. The following example shows how to retrieve a username token from the security header with a certain token ID value:

   com.ibm.wsspi.wssecurity.auth.token.UsernameToken unt;
   if (t != null) {
     unt = (com.ibm.wsspi.wssecuty.auth.token.UsernameToken)t.get(“…”);
   }
   
   

Results

After completing these steps, we have retrieved the security tokens from the JAAS Subject in a client application
Security token
Develop web services applications that retrieve tokens from the JAAS Subject in a server application
Protect system resources and APIs (Java 2 security) for developing applications
Configure Java 2 security policy files
Secure JAX-RPC web services using message-level security

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