Example Documentation

/* $Id: smplsaltnm.c,v 1.3 2004/03/02 05:18:40 gsingh Exp $ */
/* smplsaltnm.c
** Copyright (c) 2002, RSA Security Inc.
**
** This file is used to demonstrate how to interface to an RSA Security
** licensed development product.  You have a royalty-free right to use,
** modify, reproduce and distribute this demonstration file (including
** any modified version), provided that you agree that RSA Security has
** no warranty, implied or otherwise, or liability for this demonstration
** file or any modified version.
**
** This program demonstrates the creation of a simple extensions object with
** a subject alt name extension.
*/

#include "certc.h"
#include "demoutil.h"
#include "nameutil.h"

int main (int argc, char *argv[])
{
  int status = 0;

  CERTC_CTX ctx = NULL;
  EXTENSIONS_OBJ extensionsObj = NULL;

  ITEM extensionsDer = {0};

  unsigned int subAltNameIndex;
  SUBJECT_ALTNAME subAltName = {0};
  NAME_OBJ directoryName = NULL;
  
  status = RSA_SetOptions (NULL, argc, argv);
  if (status != 0)
    goto CLEANUP;

  RSA_PrintMessage ("Simple Subject Alt Name Example\n");
  RSA_PrintMessage ("===============================\n");

  status = C_InitializeCertC (NULL, NULL, 0, &ctx);
  if (status != 0)
    goto CLEANUP;
  
  status = C_CreateExtensionsObject (&extensionsObj, CERT_EXTENSIONS_OBJ, ctx);
  if (status != 0)
    goto CLEANUP;

  /* For a simple example, we just obtain an X.500 name as the
     subject alt name value */
  status = C_CreateNameObject (&directoryName);
  if (status != 0)
    goto CLEANUP;

  RSA_PrintMessage ("Supply directory name value for Subject Alt Name\n");
  status = RSA_GetInputToNameObject (directoryName);
  if (status != 0)
    goto CLEANUP;

  subAltName.altNameType = CN_DIRECTORY_NAME;
  subAltName.altName.directoryName = directoryName;

  /* Now that we have initialized our SUBJECT_ALTNAME structure, put that
     info into the extensions object */
  status = C_CreateExtension (extensionsObj, ET_SUBJECT_ALTNAME,
                              ET_SUBJECT_ALTNAME_LEN, &subAltNameIndex,
                              NON_CRITICAL, NULL);
  if (status != 0)
    goto CLEANUP;

  status = C_AddExtensionValue (extensionsObj, subAltNameIndex,
                                (POINTER)&subAltName, NULL);
  if (status != 0)
    goto CLEANUP;

  /* Now get the BER encoding of the extensions object containing the
     subject alt name value */
  status = C_GetExtensionsObjectDER (extensionsObj, &extensionsDer.data,
                                     &extensionsDer.len);
  if (status != 0)
    goto CLEANUP;

  status = RSA_WriteDataToFile
             (extensionsDer.data, extensionsDer.len,
              "Enter name of file to store extensions object binary");

CLEANUP:
  if (status != 0)
    RSA_PrintError ("smplsaltnm", status);

  C_DestroyNameObject (&directoryName);
  C_DestroyExtensionsObject (&extensionsObj);
  C_FinalizeCertC (&ctx);
  
  return status;
}  /* end main */
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