Miscellaneous GSSAPI Context Operations on the Client Side

As a sample program, gss-client performs some functions for demonstration purposes. The following source code is not essential for the basic task, but is provided to demonstrate these other operations:

• Saving and restoring the context

• Displaying context flags

• Obtaining the context status

The source code for these operations is shown in the following example.

The source code for this example is also available through the Sun download center. See http://www.sun.com/download/products.xml?id=41912db5.

Example 5–5 gss-client: call_server() Establish Context

/* Save and then restore the context */
     maj_stat = gss_export_sec_context(&min_stat,
                                           &context,
                                           &context_token);
     if (maj_stat != GSS_S_COMPLETE) {
             display_status("exporting context", maj_stat, min_stat);
             return -1;
     }
     maj_stat = gss_import_sec_context(&min_stat,
                                           &context_token,
                                           &context);
     if (maj_stat != GSS_S_COMPLETE) {
        display_status("importing context", maj_stat, min_stat);
        return -1;
     }
     (void) gss_release_buffer(&min_stat, &context_token);

     /* display the flags */
     display_ctx_flags(ret_flags);

     /* Get context information */
     maj_stat = gss_inquire_context(&min_stat, context,
                                    &src_name, &targ_name, &lifetime,
                                    &mechanism, &context_flags,
                                    &is_local,
                                    &is_open);
     if (maj_stat != GSS_S_COMPLETE) {
         display_status("inquiring context", maj_stat, min_stat);
         return -1;
     }

     if (maj_stat == GSS_S_CONTEXT_EXPIRED) {
     printf(" context expired\n");
         display_status("Context is expired", maj_stat, min_stat);
         return -1;
     }