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b8becef1cf
(cmd_setdata): Check whether data was given at all to avoid passing 0 to malloc. * app.c (app_auth): New. * app-openpgp.c (do_auth): New.
210 lines
5.5 KiB
C
210 lines
5.5 KiB
C
/* sc-investigate.c - A tool to look around on smartcards.
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* Copyright (C) 2003 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#define JNLIB_NEED_LOG_LOGV
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#include "scdaemon.h"
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#include <gcrypt.h>
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#include "apdu.h" /* for open_reader */
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#include "atr.h"
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#include "app-common.h"
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#define _(a) (a)
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enum cmd_and_opt_values
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{ oVerbose = 'v',
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oReaderPort = 500,
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oDebug,
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oDebugAll,
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oGenRandom,
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aTest };
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static ARGPARSE_OPTS opts[] = {
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{ 301, NULL, 0, "@Options:\n " },
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{ oVerbose, "verbose", 0, "verbose" },
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{ oReaderPort, "reader-port", 1, "|N|connect to reader at port N"},
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{ oDebug, "debug" ,4|16, "set debugging flags"},
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{ oDebugAll, "debug-all" ,0, "enable full debugging"},
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{ oGenRandom, "gen-random", 4, "|N|generate N bytes of random"},
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{0}
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};
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static const char *
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my_strusage (int level)
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{
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const char *p;
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switch (level)
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{
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case 11: p = "sc-investigate (GnuPG)";
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break;
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case 13: p = VERSION; break;
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case 17: p = PRINTABLE_OS_NAME; break;
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case 19: p = _("Please report bugs to <" PACKAGE_BUGREPORT ">.\n");
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break;
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case 1:
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case 40: p = _("Usage: sc-investigate [options] (-h for help)\n");
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break;
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case 41: p = _("Syntax: sc-investigate [options] [args]]\n"
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"Have a look at smartcards\n");
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break;
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default: p = NULL;
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}
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return p;
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}
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/* Used by gcry for logging */
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static void
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my_gcry_logger (void *dummy, int level, const char *fmt, va_list arg_ptr)
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{
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/* translate the log levels */
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switch (level)
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{
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case GCRY_LOG_CONT: level = JNLIB_LOG_CONT; break;
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case GCRY_LOG_INFO: level = JNLIB_LOG_INFO; break;
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case GCRY_LOG_WARN: level = JNLIB_LOG_WARN; break;
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case GCRY_LOG_ERROR:level = JNLIB_LOG_ERROR; break;
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case GCRY_LOG_FATAL:level = JNLIB_LOG_FATAL; break;
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case GCRY_LOG_BUG: level = JNLIB_LOG_BUG; break;
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case GCRY_LOG_DEBUG:level = JNLIB_LOG_DEBUG; break;
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default: level = JNLIB_LOG_ERROR; break;
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}
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log_logv (level, fmt, arg_ptr);
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}
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int
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main (int argc, char **argv )
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{
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ARGPARSE_ARGS pargs;
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int slot, rc;
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int reader_port = 32768; /* First USB reader. */
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struct app_ctx_s appbuf;
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unsigned long gen_random = 0;
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memset (&appbuf, 0, sizeof appbuf);
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set_strusage (my_strusage);
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gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
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log_set_prefix ("sc-investigate", 1);
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/* check that the libraries are suitable. Do it here because
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the option parsing may need services of the library */
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if (!gcry_check_version (NEED_LIBGCRYPT_VERSION) )
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{
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log_fatal( _("libgcrypt is too old (need %s, have %s)\n"),
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NEED_LIBGCRYPT_VERSION, gcry_check_version (NULL) );
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}
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gcry_set_log_handler (my_gcry_logger, NULL);
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/* FIXME? gcry_control (GCRYCTL_USE_SECURE_RNDPOOL);*/
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pargs.argc = &argc;
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pargs.argv = &argv;
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pargs.flags= 1; /* do not remove the args */
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while (arg_parse (&pargs, opts) )
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{
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switch (pargs.r_opt)
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{
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case oVerbose: opt.verbose++; break;
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case oDebug: opt.debug |= pargs.r.ret_ulong; break;
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case oDebugAll: opt.debug = ~0; break;
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case oGenRandom: gen_random = pargs.r.ret_ulong; break;
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default : pargs.err = 2; break;
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}
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}
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if (log_get_errorcount(0))
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exit(2);
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if (opt.verbose < 2)
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opt.verbose = 2; /* hack to let select_openpgp print some info. */
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if (argc)
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usage (1);
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slot = apdu_open_reader (reader_port);
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if (slot == -1)
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exit (1);
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if (!gen_random)
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{
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rc = atr_dump (slot, stdout);
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if (rc)
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log_error ("can't dump ATR: %s\n", gpg_strerror (rc));
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}
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appbuf.slot = slot;
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rc = app_select_openpgp (&appbuf, NULL, NULL);
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if (rc)
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log_error ("selecting openpgp failed: %s\n", gpg_strerror (rc));
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else
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{
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appbuf.initialized = 1;
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log_info ("openpgp application selected\n");
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if (gen_random)
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{
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size_t nbytes;
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unsigned char *buffer;
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buffer = xmalloc (4096);
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do
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{
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nbytes = gen_random > 4096? 4096 : gen_random;
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rc = app_get_challenge (&appbuf, nbytes, buffer);
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if (rc)
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log_error ("app_get_challenge failed: %s\n",gpg_strerror (rc));
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else
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{
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if (fwrite (buffer, nbytes, 1, stdout) != 1)
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log_error ("writing to stdout failed: %s\n",
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strerror (errno));
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gen_random -= nbytes;
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}
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}
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while (gen_random && !log_get_errorcount (0));
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xfree (buffer);
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}
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}
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return log_get_errorcount (0)? 2:0;
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}
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void
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send_status_info (CTRL ctrl, const char *keyword, ...)
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{
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/* DUMMY */
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}
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