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/* sc-investigate.c - A tool to look around on smartcards.
* Copyright (C) 2003 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>
#define JNLIB_NEED_LOG_LOGV
#include "scdaemon.h"
#include <gcrypt.h>
#include "apdu.h" /* for open_reader */
#include "atr.h"
#include "app-common.h"
#define _(a) (a)
enum cmd_and_opt_values
{ oVerbose = 'v',
oReaderPort = 500,
oDebug,
oDebugAll,
oGenRandom,
aTest };
static ARGPARSE_OPTS opts[] = {
{ 301, NULL, 0, "@Options:\n " },
{ oVerbose, "verbose", 0, "verbose" },
{ oReaderPort, "reader-port", 1, "|N|connect to reader at port N"},
{ oDebug, "debug" ,4|16, "set debugging flags"},
{ oDebugAll, "debug-all" ,0, "enable full debugging"},
{ oGenRandom, "gen-random", 4, "|N|generate N bytes of random"},
{0}
};
static const char *
my_strusage (int level)
{
const char *p;
switch (level)
{
case 11: p = "sc-investigate (GnuPG)";
break;
case 13: p = VERSION; break;
case 17: p = PRINTABLE_OS_NAME; break;
case 19: p = _("Please report bugs to <" PACKAGE_BUGREPORT ">.\n");
break;
case 1:
case 40: p = _("Usage: sc-investigate [options] (-h for help)\n");
break;
case 41: p = _("Syntax: sc-investigate [options] [args]]\n"
"Have a look at smartcards\n");
break;
default: p = NULL;
}
return p;
}
/* Used by gcry for logging */
static void
my_gcry_logger (void *dummy, int level, const char *fmt, va_list arg_ptr)
{
/* translate the log levels */
switch (level)
{
case GCRY_LOG_CONT: level = JNLIB_LOG_CONT; break;
case GCRY_LOG_INFO: level = JNLIB_LOG_INFO; break;
case GCRY_LOG_WARN: level = JNLIB_LOG_WARN; break;
case GCRY_LOG_ERROR:level = JNLIB_LOG_ERROR; break;
case GCRY_LOG_FATAL:level = JNLIB_LOG_FATAL; break;
case GCRY_LOG_BUG: level = JNLIB_LOG_BUG; break;
case GCRY_LOG_DEBUG:level = JNLIB_LOG_DEBUG; break;
default: level = JNLIB_LOG_ERROR; break;
}
log_logv (level, fmt, arg_ptr);
}
int
main (int argc, char **argv )
{
ARGPARSE_ARGS pargs;
int slot, rc;
int reader_port = 32768; /* First USB reader. */
struct app_ctx_s appbuf;
unsigned long gen_random = 0;
memset (&appbuf, 0, sizeof appbuf);
set_strusage (my_strusage);
gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
log_set_prefix ("sc-investigate", 1);
/* check that the libraries are suitable. Do it here because
the option parsing may need services of the library */
if (!gcry_check_version (NEED_LIBGCRYPT_VERSION) )
{
log_fatal( _("libgcrypt is too old (need %s, have %s)\n"),
NEED_LIBGCRYPT_VERSION, gcry_check_version (NULL) );
}
gcry_set_log_handler (my_gcry_logger, NULL);
/* FIXME? gcry_control (GCRYCTL_USE_SECURE_RNDPOOL);*/
pargs.argc = &argc;
pargs.argv = &argv;
pargs.flags= 1; /* do not remove the args */
while (arg_parse (&pargs, opts) )
{
switch (pargs.r_opt)
{
case oVerbose: opt.verbose++; break;
case oDebug: opt.debug |= pargs.r.ret_ulong; break;
case oDebugAll: opt.debug = ~0; break;
case oGenRandom: gen_random = pargs.r.ret_ulong; break;
default : pargs.err = 2; break;
}
}
if (log_get_errorcount(0))
exit(2);
if (opt.verbose < 2)
opt.verbose = 2; /* hack to let select_openpgp print some info. */
if (argc)
usage (1);
slot = apdu_open_reader (reader_port);
if (slot == -1)
exit (1);
if (!gen_random)
{
rc = atr_dump (slot, stdout);
if (rc)
log_error ("can't dump ATR: %s\n", gpg_strerror (rc));
}
appbuf.slot = slot;
rc = app_select_openpgp (&appbuf, NULL, NULL);
if (rc)
log_error ("selecting openpgp failed: %s\n", gpg_strerror (rc));
else
{
appbuf.initialized = 1;
log_info ("openpgp application selected\n");
if (gen_random)
{
size_t nbytes;
unsigned char *buffer;
buffer = xmalloc (4096);
do
{
nbytes = gen_random > 4096? 4096 : gen_random;
rc = app_get_challenge (&appbuf, nbytes, buffer);
if (rc)
log_error ("app_get_challenge failed: %s\n",gpg_strerror (rc));
else
{
if (fwrite (buffer, nbytes, 1, stdout) != 1)
log_error ("writing to stdout failed: %s\n",
strerror (errno));
gen_random -= nbytes;
}
}
while (gen_random && !log_get_errorcount (0));
xfree (buffer);
}
}
return log_get_errorcount (0)? 2:0;
}
void
send_status_info (CTRL ctrl, const char *keyword, ...)
{
/* DUMMY */
}
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