/* certdump.c - Dump a certificate for debugging
 *	Copyright (C) 2001 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GnuPG is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h> 
#include <time.h>
#include <assert.h>

#include <gcrypt.h>
#include <ksba.h>

#include "gpgsm.h"
#include "keydb.h"

static void
print_integer (unsigned char *p)
{
  unsigned long len;

  if (!p)
    fputs ("none", stdout);
  else
    {
      len = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
      for (p+=4; len; len--, p++)
        printf ("%02X", *p);
    }
}

static void
print_time (time_t t)
{

  if (!t)
    fputs ("none", stdout);
  else if ( t == (time_t)(-1) )
    fputs ("error", stdout);
  else
    {
      struct tm *tp;

      tp = gmtime (&t);
      printf ("%04d-%02d-%02d %02d:%02d:%02d",
              1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday,
              tp->tm_hour, tp->tm_min, tp->tm_sec);
      assert (!tp->tm_isdst);
    }
}

static void
print_dn (char *p)
{

  if (!p)
    fputs ("error", stdout);
  else
    printf ("`%s'", p);
}


void 
gpgsm_dump_cert (KsbaCert cert)
{
  unsigned char *p;
  char *dn;
  time_t t;

  if (!cert)
    {
      fputs ("[no certificate]\n", stdout);
      return;
    }
    
  p = ksba_cert_get_serial (cert);
  fputs ("serial: ", stdout);
  print_integer (p);
  ksba_free (p);
  putchar ('\n');

  t = ksba_cert_get_validity (cert, 0);
  fputs ("notBefore: ", stdout);
  print_time (t);
  putchar ('\n');
  t = ksba_cert_get_validity (cert, 1);
  fputs ("notAfter: ", stdout);
  print_time (t);
  putchar ('\n');
    
  dn = ksba_cert_get_issuer (cert);
  fputs ("issuer: ", stdout);
  print_dn (dn);
  ksba_free (dn);
  putchar ('\n');
    
  dn = ksba_cert_get_subject (cert);
  fputs ("subject: ", stdout);
  print_dn (dn);
  ksba_free (dn);
  putchar ('\n');

  printf ("hash algo: %d\n", ksba_cert_get_digest_algo (cert));

  p = gpgsm_get_fingerprint_string (cert, 0);
  printf ("SHA1 Fingerprint=%s\n", p);
  xfree (p);
}