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/* run-verify.c - Helper to perform a verify operation
Copyright (C) 2009 g10 Code GmbH
This file is part of GPGME.
GPGME is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
GPGME 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* We need to include config.h so that we know whether we are building
with large file system (LFS) support. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gpgme.h>
#define PGM "run-verify"
#include "run-support.h"
static int verbose;
static void
print_summary (gpgme_sigsum_t summary)
{
if ( (summary & GPGME_SIGSUM_VALID ))
fputs (" valid", stdout);
if ( (summary & GPGME_SIGSUM_GREEN ))
fputs (" green", stdout);
if ( (summary & GPGME_SIGSUM_RED ))
fputs (" red", stdout);
if ( (summary & GPGME_SIGSUM_KEY_REVOKED))
fputs (" revoked", stdout);
if ( (summary & GPGME_SIGSUM_KEY_EXPIRED))
fputs (" key-expired", stdout);
if ( (summary & GPGME_SIGSUM_SIG_EXPIRED))
fputs (" sig-expired", stdout);
if ( (summary & GPGME_SIGSUM_KEY_MISSING))
fputs (" key-missing", stdout);
if ( (summary & GPGME_SIGSUM_CRL_MISSING))
fputs (" crl-missing", stdout);
if ( (summary & GPGME_SIGSUM_CRL_TOO_OLD))
fputs (" crl-too-old", stdout);
if ( (summary & GPGME_SIGSUM_BAD_POLICY ))
fputs (" bad-policy", stdout);
if ( (summary & GPGME_SIGSUM_SYS_ERROR ))
fputs (" sys-error", stdout);
}
static void
print_validity (gpgme_validity_t val)
{
const char *s = NULL;
switch (val)
{
case GPGME_VALIDITY_UNKNOWN: s = "unknown"; break;
case GPGME_VALIDITY_UNDEFINED:s = "undefined"; break;
case GPGME_VALIDITY_NEVER: s = "never"; break;
case GPGME_VALIDITY_MARGINAL: s = "marginal"; break;
case GPGME_VALIDITY_FULL: s = "full"; break;
case GPGME_VALIDITY_ULTIMATE: s = "ultimate"; break;
}
if (s)
fputs (s, stdout);
else
printf ("[bad validity value %u]", (unsigned int)val);
}
static void
print_result (gpgme_verify_result_t result)
{
gpgme_signature_t sig;
int count = 0;
printf ("Original file name: %s\n", nonnull(result->file_name));
for (sig = result->signatures; sig; sig = sig->next)
{
printf ("Signature %d\n", count++);
printf (" status ....: %s\n", gpgme_strerror (sig->status));
printf (" summary ...:"); print_summary (sig->summary); putchar ('\n');
printf (" fingerprint: %s\n", nonnull (sig->fpr));
printf (" created ...: %lu\n", sig->timestamp);
printf (" expires ...: %lu\n", sig->exp_timestamp);
printf (" validity ..: ");
print_validity (sig->validity); putchar ('\n');
printf (" val.reason : %s\n", gpgme_strerror (sig->status));
printf (" pubkey algo: %d\n", sig->pubkey_algo);
printf (" digest algo: %d\n", sig->hash_algo);
printf (" pka address: %s\n", nonnull (sig->pka_address));
printf (" pka trust .: %s\n",
sig->pka_trust == 0? "n/a" :
sig->pka_trust == 1? "bad" :
sig->pka_trust == 2? "okay": "RFU");
printf (" other flags:%s%s\n",
sig->wrong_key_usage? " wrong-key-usage":"",
sig->chain_model? " chain-model":""
);
printf (" notations .: %s\n",
sig->notations? "yes":"no");
}
}
static int
show_usage (int ex)
{
fputs ("usage: " PGM " [options] [DETACHEDSIGFILE] FILE\n\n"
"Options:\n"
" --verbose run in verbose mode\n"
" --openpgp use the OpenPGP protocol (default)\n"
" --cms use the CMS protocol\n"
, stderr);
exit (ex);
}
int
main (int argc, char **argv)
{
int last_argc = -1;
gpgme_error_t err;
gpgme_ctx_t ctx;
gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
FILE *fp_sig = NULL;
gpgme_data_t sig = NULL;
FILE *fp_msg = NULL;
gpgme_data_t msg = NULL;
gpgme_verify_result_t result;
if (argc)
{ argc--; argv++; }
while (argc && last_argc != argc )
{
last_argc = argc;
if (!strcmp (*argv, "--"))
{
argc--; argv++;
break;
}
else if (!strcmp (*argv, "--help"))
show_usage (0);
else if (!strcmp (*argv, "--verbose"))
{
verbose = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--openpgp"))
{
protocol = GPGME_PROTOCOL_OpenPGP;
argc--; argv++;
}
else if (!strcmp (*argv, "--cms"))
{
protocol = GPGME_PROTOCOL_CMS;
argc--; argv++;
}
else if (!strncmp (*argv, "--", 2))
show_usage (1);
}
if (argc < 1 || argc > 2)
show_usage (1);
fp_sig = fopen (argv[0], "rb");
if (!fp_sig)
{
err = gpgme_error_from_syserror ();
fprintf (stderr, PGM ": can't open `%s': %s\n",
argv[0], gpgme_strerror (err));
exit (1);
}
if (argc > 1)
{
fp_msg = fopen (argv[1], "rb");
if (!fp_msg)
{
err = gpgme_error_from_syserror ();
fprintf (stderr, PGM ": can't open `%s': %s\n",
argv[1], gpgme_strerror (err));
exit (1);
}
}
init_gpgme (protocol);
err = gpgme_new (&ctx);
fail_if_err (err);
gpgme_set_protocol (ctx, protocol);
err = gpgme_data_new_from_stream (&sig, fp_sig);
if (err)
{
fprintf (stderr, PGM ": error allocating data object: %s\n",
gpgme_strerror (err));
exit (1);
}
if (fp_msg)
{
err = gpgme_data_new_from_stream (&msg, fp_msg);
if (err)
{
fprintf (stderr, PGM ": error allocating data object: %s\n",
gpgme_strerror (err));
exit (1);
}
}
err = gpgme_op_verify (ctx, sig, msg, NULL);
result = gpgme_op_verify_result (ctx);
if (result)
print_result (result);
if (err)
{
fprintf (stderr, PGM ": signing failed: %s\n", gpgme_strerror (err));
exit (1);
}
gpgme_data_release (msg);
gpgme_data_release (sig);
gpgme_release (ctx);
return 0;
}
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