Example: Get the caller subject from the thread

Example: Get the caller subject from the thread

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The Caller subject (or "received subject") contains the user authentication information that is used in the call for this request. This subject is returned after issuing the WSSubject.getCallerSubject API to prevent replacing existing objects. The subject is marked read-only. This API can be used to get access to the WSCredential credential so that you can put or set data in the hashmap within the credential.
Most data within the subject is not propagated downstream to another server. Only the credential token within the WSCredential credential is propagated downstream and a new caller subject is generated.
 try
{
  javax.security.auth.Subject caller_subject;
  com.ibm.websphere.security.cred.WSCredential caller_cred;
  
  caller_subject = com.ibm.websphere.security.auth.WSSubject.getCallerSubject();

  if (caller_subject != null)
  {
    caller_cred = caller_subject.getPublicCredentials
    (com.ibm.websphere.security.cred.WSCredential.class).iterator().next();
    String CALLERDATA = (String) caller_cred.get ("MYKEY");
    System.out.println("My data from the Caller credential is:  " + CALLERDATA);
  }
} catch (WSSecurityException e)
{
  // log error
} catch (Exception e)
{
  // log error
}
Requirement: We need the following Java 2 security permissions to runthis API: permission javax.security.auth.AuthPermission "wssecurity.getCallerSubject;".

Related tasks

Customizing application login with JAAS

Related Reference
Customization of a server-side JAAS authentication and login configuration