/*
 * Copyright 1996, Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * Export of this software from the United States of America may
 *   require a specific license from the United States Government.
 *   It is the responsibility of any person or organization contemplating
 *   export to obtain such a license before exporting.
 * 
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 *
 * Simple test program for testing how GSSAPI import name works.  (May
 * be made into a more full-fledged test program later.)
 * 
 */

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gssapi/gssapi.h>
#include <gssapi/gssapi_generic.h>

#define GSSAPI_V2
void display_status (char *, OM_uint32, OM_uint32);
static void display_status_1 (char *, OM_uint32, int);
static void display_buffer (gss_buffer_desc);
static int test_import_name (char *);

FILE *display_file;

int main(argc, argv)
	int argc;
	char **argv;
{
	int retval;

	display_file = stdout;

	retval = test_import_name("host@dcl.mit.edu");

	return retval;
}

static int test_import_name(name)
	char *name;
{
	OM_uint32 maj_stat, min_stat;
	gss_name_t gss_name;
	gss_buffer_desc buffer_name;
	gss_OID	name_oid;

	buffer_name.value = name;
	buffer_name.length = strlen(name) + 1;
	maj_stat = gss_import_name(&min_stat, &buffer_name,
				   (gss_OID) gss_nt_service_name,
				   &gss_name);
	if (maj_stat != GSS_S_COMPLETE) {
		display_status("parsing name", maj_stat, min_stat);
		return -1;
	}
	
	maj_stat = gss_display_name(&min_stat, gss_name, &buffer_name,
				    &name_oid);
	if (maj_stat != GSS_S_COMPLETE) {
		display_status("displaying context", maj_stat, min_stat);
		return -1;
	}
	printf("name is: ");
	display_buffer(buffer_name);
	printf("\n");
	(void) gss_release_buffer(&min_stat, &buffer_name);

	gss_oid_to_str(&min_stat, name_oid, &buffer_name);
	printf("name type is: ");
	display_buffer(buffer_name);
	printf("\n");
	(void) gss_release_buffer(&min_stat, &buffer_name);

	(void) gss_release_name(&min_stat, &gss_name);
	return 0;
}

static void display_buffer(buffer)
	gss_buffer_desc buffer;
{
    char *namebuf;
    
    namebuf = malloc(buffer.length+1);    
    if (!namebuf) {
	fprintf(stderr, "display_buffer: couldn't allocate buffer!\n");
	exit(1);
    }
    strncpy(namebuf, buffer.value, buffer.length);
    namebuf[buffer.length] = '\0';
    printf("%s", namebuf);
    free(namebuf);
}

void display_status(msg, maj_stat, min_stat)
     char *msg;
     OM_uint32 maj_stat;
     OM_uint32 min_stat;
{
     display_status_1(msg, maj_stat, GSS_C_GSS_CODE);
     display_status_1(msg, min_stat, GSS_C_MECH_CODE);
}

static void display_status_1(m, code, type)
     char *m;
     OM_uint32 code;
     int type;
{
     OM_uint32 min_stat;
     gss_buffer_desc msg;
#ifdef	GSSAPI_V2
     OM_uint32 msg_ctx;
#else	/* GSSAPI_V2 */
     int msg_ctx;
#endif	/* GSSAPI_V2 */
     
     msg_ctx = 0;
     while (1) {
	  (void) gss_display_status(&min_stat, code,
				       type, GSS_C_NULL_OID,
				       &msg_ctx, &msg);
	  if (display_file)
	      fprintf(display_file, "GSS-API error %s: %s\n", m,
		      (char *)msg.value); 
	  (void) gss_release_buffer(&min_stat, &msg);
	  
	  if (!msg_ctx)
	       break;
     }
}

