JavaScript is required to for searching.
Skip Navigation Links
Exit Print View
Developer's Guide to Oracle Solaris 11 Security     Oracle Solaris 11 Information Library
search filter icon
search icon

Document Information


1.  Oracle Solaris Security for Developers (Overview)

2.  Developing Privileged Applications

3.  Writing PAM Applications and Services

4.  Writing Applications That Use GSS-API

5.  GSS-API Client Example

GSSAPI Client Example Overview

GSSAPI Client Example Structure

Running the GSSAPI Client Example

GSSAPI Client Example: main() Function

Opening a Connection With the Server

Establishing a Security Context With the Server

Translating a Service Name into GSS-API Format

Establishing a Security Context for GSS-API

Miscellaneous GSSAPI Context Operations on the Client Side

Wrapping and Sending a Message

Reading and Verifying a Signature Block From a GSS-API Client

Deleting the Security Context

6.  GSS-API Server Example

7.  Writing Applications That Use SASL

8.  Introduction to the Oracle Solaris Cryptographic Framework

9.  Writing User-Level Cryptographic Applications and Providers

10.  Introduction to the Oracle Solaris Key Management Framework

A.  Sample C-Based GSS-API Programs

B.  GSS-API Reference

C.  Specifying an OID

D.  Source Code for SASL Example

E.  SASL Reference Tables



GSSAPI Client Example: main() Function

As with all C programs, the outer shell of the program is contained in the entry-point function, main(). main() performs four functions:

The source code for the main() routine is shown in the following example.

Note - The source code for this example is also available through the Oracle download center. See

Example 5-1 gss-client Example: main()

int main(argc, argv)
     int argc;
     char **argv;
     char *msg;
     char service_name[128]; 
     char hostname[128];  
     char *mechanism = 0;
     u_short port = 4444;
     int use_file = 0;
     OM_uint32 deleg_flag = 0, min_stat;
     display_file = stdout;

     /* Parse command-line arguments. */

        argc--; argv++;
     while (argc) {
          if (strcmp(*argv, "-port") == 0) {
               argc--; argv++;
               if (!argc) usage();
               port = atoi(*argv);
          } else if (strcmp(*argv, "-mech") == 0) {
               argc--; argv++;
               if (!argc) usage();
               mechanism = *argv;
          } else if (strcmp(*argv, "-d") == 0) {
               deleg_flag = GSS_C_DELEG_FLAG;
          } else if (strcmp(*argv, "-f") == 0) {
               use_file = 1;
          } else
          argc--; argv++;
     if (argc != 3)

     if (argc > 1) {
                strcpy(hostname, argv[0]);
        } else if (gethostname(hostname, sizeof(hostname)) == -1) {

     if (argc > 2) { 
        strcpy(service_name, argv[1]);
        strcat(service_name, "@");
        strcat(service_name, hostname);

      msg = argv[2];

     /* Create GSSAPI object ID. */
     if (mechanism)
         parse_oid(mechanism, &g_mechOid);

     /* Call server to create context and send data. */
     if (call_server(hostname, port, g_mechOid, service_name,
                   deleg_flag, msg, use_file) < 0)

     /* Release storage space for OID, if still allocated  */
     if (g_mechOid != GSS_C_NULL_OID)
         (void) gss_release_oid(&min_stat, &gmechOid);
     return 0;