getauth.c


 int
 main (int argc, char *argv [])
 {
   error_t err;
   mach_port_t password_serv, msgport;
   auth_t auth;
   process_t proc_server;

   password_serv = file_name_lookup (_SERVERS_PASSWORD, 0, 0);
   if (password_serv == MACH_PORT_NULL)
     error (1, 0, "Failed to obtain a port to the password server");

   err = password_check_user (password_serv, atoi (argv[1]), argv[2],
                              &auth);
   if (err == EACCES)
     error (1, err, "Invalid password");
   if (err)
     error (1, err, "Authentication failure");

   proc_server = getproc ();
   err = proc_getmsgport (proc_serv, getppid (), &msgport);
   if (err)
     error (1, err, "Cannot get parent's message port");

   err = msg_add_auth (msgport, auth);
   if (err)
     error (1, err, "Failed to add authorization to parent");

   return 0;
 }