mirror of git://git.gnupg.org/gnupg.git
742 lines
23 KiB
C
742 lines
23 KiB
C
/* verify.c - Verify a messages signature
|
||
* Copyright (C) 2001, 2002, 2003, 2007,
|
||
* 2010 Free Software Foundation, Inc.
|
||
* Copyright (C) 2001-2019 Werner Koch
|
||
* Copyright (C) 2015-2020 g10 Code GmbH
|
||
*
|
||
* 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 3 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.
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||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with this program; if not, see <https://www.gnu.org/licenses/>.
|
||
* SPDX-License-Identifier: GPL-3.0-or-later
|
||
*/
|
||
|
||
#include <config.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <errno.h>
|
||
#include <unistd.h>
|
||
#include <time.h>
|
||
|
||
#include "gpgsm.h"
|
||
#include <gcrypt.h>
|
||
#include <ksba.h>
|
||
|
||
#include "keydb.h"
|
||
#include "../common/i18n.h"
|
||
#include "../common/compliance.h"
|
||
|
||
static char *
|
||
strtimestamp_r (ksba_isotime_t atime)
|
||
{
|
||
char *buffer = xmalloc (15);
|
||
|
||
if (!atime || !*atime)
|
||
strcpy (buffer, "none");
|
||
else
|
||
sprintf (buffer, "%.4s-%.2s-%.2s", atime, atime+4, atime+6);
|
||
return buffer;
|
||
}
|
||
|
||
|
||
|
||
/* Hash the data for a detached signature. Returns 0 on success. */
|
||
static gpg_error_t
|
||
hash_data (int fd, gcry_md_hd_t md)
|
||
{
|
||
gpg_error_t err = 0;
|
||
estream_t fp;
|
||
char buffer[4096];
|
||
int nread;
|
||
|
||
fp = es_fdopen_nc (fd, "rb");
|
||
if (!fp)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
log_error ("fdopen(%d) failed: %s\n", fd, gpg_strerror (err));
|
||
return err;
|
||
}
|
||
|
||
do
|
||
{
|
||
nread = es_fread (buffer, 1, DIM(buffer), fp);
|
||
gcry_md_write (md, buffer, nread);
|
||
}
|
||
while (nread);
|
||
if (es_ferror (fp))
|
||
{
|
||
err = gpg_error_from_syserror ();
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log_error ("read error on fd %d: %s\n", fd, gpg_strerror (err));
|
||
}
|
||
es_fclose (fp);
|
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return err;
|
||
}
|
||
|
||
|
||
|
||
|
||
/* Perform a verify operation. To verify detached signatures, DATA_FD
|
||
must be different than -1. With OUT_FP given and a non-detached
|
||
signature, the signed material is written to that stream. */
|
||
int
|
||
gpgsm_verify (ctrl_t ctrl, int in_fd, int data_fd, estream_t out_fp)
|
||
{
|
||
int i, rc;
|
||
gnupg_ksba_io_t b64reader = NULL;
|
||
gnupg_ksba_io_t b64writer = NULL;
|
||
ksba_reader_t reader;
|
||
ksba_writer_t writer = NULL;
|
||
ksba_cms_t cms = NULL;
|
||
ksba_stop_reason_t stopreason;
|
||
ksba_cert_t cert;
|
||
KEYDB_HANDLE kh;
|
||
gcry_md_hd_t data_md = NULL;
|
||
int signer;
|
||
const char *algoid;
|
||
int algo;
|
||
int is_detached;
|
||
estream_t in_fp = NULL;
|
||
char *p;
|
||
|
||
audit_set_type (ctrl->audit, AUDIT_TYPE_VERIFY);
|
||
|
||
kh = keydb_new (ctrl);
|
||
if (!kh)
|
||
{
|
||
log_error (_("failed to allocate keyDB handle\n"));
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
goto leave;
|
||
}
|
||
|
||
|
||
in_fp = es_fdopen_nc (in_fd, "rb");
|
||
if (!in_fp)
|
||
{
|
||
rc = gpg_error_from_syserror ();
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log_error ("fdopen() failed: %s\n", strerror (errno));
|
||
goto leave;
|
||
}
|
||
|
||
rc = gnupg_ksba_create_reader
|
||
(&b64reader, ((ctrl->is_pem? GNUPG_KSBA_IO_PEM : 0)
|
||
| (ctrl->is_base64? GNUPG_KSBA_IO_BASE64 : 0)
|
||
| (ctrl->autodetect_encoding? GNUPG_KSBA_IO_AUTODETECT : 0)),
|
||
in_fp, &reader);
|
||
if (rc)
|
||
{
|
||
log_error ("can't create reader: %s\n", gpg_strerror (rc));
|
||
goto leave;
|
||
}
|
||
|
||
if (out_fp)
|
||
{
|
||
rc = gnupg_ksba_create_writer
|
||
(&b64writer, ((ctrl->create_pem? GNUPG_KSBA_IO_PEM : 0)
|
||
| (ctrl->create_base64? GNUPG_KSBA_IO_BASE64 : 0)),
|
||
ctrl->pem_name, out_fp, &writer);
|
||
if (rc)
|
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{
|
||
log_error ("can't create writer: %s\n", gpg_strerror (rc));
|
||
goto leave;
|
||
}
|
||
}
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||
|
||
rc = ksba_cms_new (&cms);
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||
if (rc)
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goto leave;
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||
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||
rc = ksba_cms_set_reader_writer (cms, reader, writer);
|
||
if (rc)
|
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{
|
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log_error ("ksba_cms_set_reader_writer failed: %s\n",
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gpg_strerror (rc));
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goto leave;
|
||
}
|
||
|
||
rc = gcry_md_open (&data_md, 0, 0);
|
||
if (rc)
|
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{
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||
log_error ("md_open failed: %s\n", gpg_strerror (rc));
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goto leave;
|
||
}
|
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if (DBG_HASHING)
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gcry_md_debug (data_md, "vrfy.data");
|
||
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audit_log (ctrl->audit, AUDIT_SETUP_READY);
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||
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is_detached = 0;
|
||
do
|
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{
|
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rc = ksba_cms_parse (cms, &stopreason);
|
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if (rc)
|
||
{
|
||
log_error ("ksba_cms_parse failed: %s\n", gpg_strerror (rc));
|
||
goto leave;
|
||
}
|
||
|
||
if (stopreason == KSBA_SR_NEED_HASH)
|
||
{
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is_detached = 1;
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||
audit_log (ctrl->audit, AUDIT_DETACHED_SIGNATURE);
|
||
if (opt.verbose)
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log_info ("detached signature\n");
|
||
}
|
||
|
||
if (stopreason == KSBA_SR_NEED_HASH
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|| stopreason == KSBA_SR_BEGIN_DATA)
|
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{
|
||
audit_log (ctrl->audit, AUDIT_GOT_DATA);
|
||
|
||
/* We are now able to enable the hash algorithms */
|
||
for (i=0; (algoid=ksba_cms_get_digest_algo_list (cms, i)); i++)
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{
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algo = gcry_md_map_name (algoid);
|
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if (!algo)
|
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{
|
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log_error ("unknown hash algorithm '%s'\n",
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algoid? algoid:"?");
|
||
if (algoid
|
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&& ( !strcmp (algoid, "1.2.840.113549.1.1.2")
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||!strcmp (algoid, "1.2.840.113549.2.2")))
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log_info (_("(this is the MD2 algorithm)\n"));
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audit_log_s (ctrl->audit, AUDIT_BAD_DATA_HASH_ALGO, algoid);
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}
|
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else
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{
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if (DBG_X509)
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log_debug ("enabling hash algorithm %d (%s)\n",
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algo, algoid? algoid:"");
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gcry_md_enable (data_md, algo);
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audit_log_i (ctrl->audit, AUDIT_DATA_HASH_ALGO, algo);
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}
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}
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if (opt.extra_digest_algo)
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{
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if (DBG_X509)
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log_debug ("enabling extra hash algorithm %d\n",
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opt.extra_digest_algo);
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gcry_md_enable (data_md, opt.extra_digest_algo);
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audit_log_i (ctrl->audit, AUDIT_DATA_HASH_ALGO,
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opt.extra_digest_algo);
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}
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if (is_detached)
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{
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if (data_fd == -1)
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{
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log_info ("detached signature w/o data "
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"- assuming certs-only\n");
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audit_log (ctrl->audit, AUDIT_CERT_ONLY_SIG);
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}
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else
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audit_log_ok (ctrl->audit, AUDIT_DATA_HASHING,
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hash_data (data_fd, data_md));
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}
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else
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{
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ksba_cms_set_hash_function (cms, HASH_FNC, data_md);
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}
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}
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else if (stopreason == KSBA_SR_END_DATA)
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{ /* The data bas been hashed */
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audit_log_ok (ctrl->audit, AUDIT_DATA_HASHING, 0);
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}
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}
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while (stopreason != KSBA_SR_READY);
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if (b64writer)
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{
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rc = gnupg_ksba_finish_writer (b64writer);
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if (rc)
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{
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log_error ("write failed: %s\n", gpg_strerror (rc));
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audit_log_ok (ctrl->audit, AUDIT_WRITE_ERROR, rc);
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goto leave;
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}
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}
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||
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if (data_fd != -1 && !is_detached)
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{
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log_error ("data given for a non-detached signature\n");
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rc = gpg_error (GPG_ERR_CONFLICT);
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audit_log (ctrl->audit, AUDIT_USAGE_ERROR);
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goto leave;
|
||
}
|
||
|
||
for (i=0; (cert=ksba_cms_get_cert (cms, i)); i++)
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{
|
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/* Fixme: it might be better to check the validity of the
|
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certificate first before entering it into the DB. This way
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we would avoid cluttering the DB with invalid
|
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certificates. */
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audit_log_cert (ctrl->audit, AUDIT_SAVE_CERT, cert,
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keydb_store_cert (ctrl, cert, 0, NULL));
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ksba_cert_release (cert);
|
||
}
|
||
|
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cert = NULL;
|
||
for (signer=0; ; signer++)
|
||
{
|
||
char *issuer = NULL;
|
||
gcry_sexp_t sigval = NULL;
|
||
ksba_isotime_t sigtime, keyexptime;
|
||
ksba_sexp_t serial;
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||
char *msgdigest = NULL;
|
||
size_t msgdigestlen;
|
||
char *ctattr;
|
||
int sigval_hash_algo;
|
||
int info_pkalgo;
|
||
unsigned int nbits;
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||
int pkalgo;
|
||
char *pkalgostr = NULL;
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||
char *pkfpr = NULL;
|
||
unsigned int pkalgoflags, verifyflags;
|
||
|
||
rc = ksba_cms_get_issuer_serial (cms, signer, &issuer, &serial);
|
||
if (!signer && gpg_err_code (rc) == GPG_ERR_NO_DATA
|
||
&& data_fd == -1 && is_detached)
|
||
{
|
||
log_info ("certs-only message accepted\n");
|
||
rc = 0;
|
||
break;
|
||
}
|
||
if (rc)
|
||
{
|
||
if (signer && rc == -1)
|
||
rc = 0;
|
||
break;
|
||
}
|
||
|
||
gpgsm_status (ctrl, STATUS_NEWSIG, NULL);
|
||
audit_log_i (ctrl->audit, AUDIT_NEW_SIG, signer);
|
||
|
||
if (DBG_X509)
|
||
{
|
||
log_debug ("signer %d - issuer: '%s'\n",
|
||
signer, issuer? issuer:"[NONE]");
|
||
log_debug ("signer %d - serial: ", signer);
|
||
gpgsm_dump_serial (serial);
|
||
log_printf ("\n");
|
||
}
|
||
if (ctrl->audit)
|
||
{
|
||
char *tmpstr = gpgsm_format_sn_issuer (serial, issuer);
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_NAME, tmpstr);
|
||
xfree (tmpstr);
|
||
}
|
||
|
||
rc = ksba_cms_get_signing_time (cms, signer, sigtime);
|
||
if (gpg_err_code (rc) == GPG_ERR_NO_DATA)
|
||
*sigtime = 0;
|
||
else if (rc)
|
||
{
|
||
log_error ("error getting signing time: %s\n", gpg_strerror (rc));
|
||
*sigtime = 0; /* (we can't encode an error in the time string.) */
|
||
}
|
||
|
||
rc = ksba_cms_get_message_digest (cms, signer,
|
||
&msgdigest, &msgdigestlen);
|
||
if (!rc)
|
||
{
|
||
algoid = ksba_cms_get_digest_algo (cms, signer);
|
||
algo = gcry_md_map_name (algoid);
|
||
if (DBG_X509)
|
||
log_debug ("signer %d - digest algo: %d\n", signer, algo);
|
||
if (! gcry_md_is_enabled (data_md, algo))
|
||
{
|
||
log_error ("digest algo %d (%s) has not been enabled\n",
|
||
algo, algoid?algoid:"");
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "unsupported");
|
||
goto next_signer;
|
||
}
|
||
}
|
||
else if (gpg_err_code (rc) == GPG_ERR_NO_DATA)
|
||
{
|
||
log_assert (!msgdigest);
|
||
rc = 0;
|
||
algoid = NULL;
|
||
algo = 0;
|
||
}
|
||
else /* real error */
|
||
{
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "error");
|
||
break;
|
||
}
|
||
|
||
rc = ksba_cms_get_sigattr_oids (cms, signer,
|
||
"1.2.840.113549.1.9.3", &ctattr);
|
||
if (!rc)
|
||
{
|
||
const char *s;
|
||
|
||
if (DBG_X509)
|
||
log_debug ("signer %d - content-type attribute: %s",
|
||
signer, ctattr);
|
||
|
||
s = ksba_cms_get_content_oid (cms, 1);
|
||
if (!s || strcmp (ctattr, s))
|
||
{
|
||
log_error ("content-type attribute does not match "
|
||
"actual content-type\n");
|
||
ksba_free (ctattr);
|
||
ctattr = NULL;
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "bad");
|
||
goto next_signer;
|
||
}
|
||
ksba_free (ctattr);
|
||
ctattr = NULL;
|
||
}
|
||
else if (rc != -1)
|
||
{
|
||
log_error ("error getting content-type attribute: %s\n",
|
||
gpg_strerror (rc));
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "bad");
|
||
goto next_signer;
|
||
}
|
||
rc = 0;
|
||
|
||
|
||
sigval = gpgsm_ksba_cms_get_sig_val (cms, signer);
|
||
if (!sigval)
|
||
{
|
||
log_error ("no signature value available\n");
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "bad");
|
||
goto next_signer;
|
||
}
|
||
|
||
sigval_hash_algo = gpgsm_get_hash_algo_from_sigval (sigval, &pkalgoflags);
|
||
if (DBG_X509)
|
||
{
|
||
log_debug ("signer %d - signature available (sigval hash=%d pkaf=%u)",
|
||
signer, sigval_hash_algo, pkalgoflags);
|
||
}
|
||
if (!sigval_hash_algo)
|
||
sigval_hash_algo = algo; /* Fallback used e.g. with old libksba. */
|
||
|
||
/* Find the certificate of the signer */
|
||
keydb_search_reset (kh);
|
||
rc = keydb_search_issuer_sn (ctrl, kh, issuer, serial);
|
||
if (rc)
|
||
{
|
||
if (gpg_err_code (rc) == GPG_ERR_NOT_FOUND)
|
||
{
|
||
log_error ("certificate not found\n");
|
||
rc = gpg_error (GPG_ERR_NO_PUBKEY);
|
||
}
|
||
else
|
||
log_error ("failed to find the certificate: %s\n",
|
||
gpg_strerror(rc));
|
||
{
|
||
char numbuf[50];
|
||
sprintf (numbuf, "%d", rc);
|
||
|
||
gpgsm_status2 (ctrl, STATUS_ERROR, "verify.findkey",
|
||
numbuf, NULL);
|
||
}
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "no-cert");
|
||
goto next_signer;
|
||
}
|
||
|
||
rc = keydb_get_cert (kh, &cert);
|
||
if (rc)
|
||
{
|
||
log_error ("failed to get cert: %s\n", gpg_strerror (rc));
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "error");
|
||
goto next_signer;
|
||
}
|
||
|
||
pkfpr = gpgsm_get_fingerprint_hexstring (cert, GCRY_MD_SHA1);
|
||
pkalgostr = gpgsm_pubkey_algo_string (cert, NULL);
|
||
pkalgo = gpgsm_get_key_algo_info (cert, &nbits);
|
||
/* Remap the ECC algo to the algo we use. Note that EdDSA has
|
||
* already been mapped. */
|
||
if (pkalgo == GCRY_PK_ECC)
|
||
pkalgo = GCRY_PK_ECDSA;
|
||
|
||
/* Print infos about the signature. */
|
||
log_info (_("Signature made "));
|
||
if (*sigtime)
|
||
{
|
||
/* We take the freedom as noted in RFC3339 to use a space
|
||
* instead of the "T" delimiter between date and time. We
|
||
* also append a separate UTC instead of a "Z" or "+00:00"
|
||
* suffix because that makes it clear to everyone what kind
|
||
* of time this is. */
|
||
dump_isotime (sigtime);
|
||
log_printf (" UTC");
|
||
}
|
||
else
|
||
log_printf (_("[date not given]"));
|
||
log_info (_(" using %s key %s\n"), pkalgostr, pkfpr);
|
||
if (opt.verbose)
|
||
{
|
||
log_info (_("algorithm:"));
|
||
log_printf (" %s + %s",
|
||
pubkey_algo_to_string (pkalgo),
|
||
gcry_md_algo_name (sigval_hash_algo));
|
||
if (algo != sigval_hash_algo)
|
||
log_printf (" (%s)", gcry_md_algo_name (algo));
|
||
log_printf ("\n");
|
||
}
|
||
|
||
audit_log_i (ctrl->audit, AUDIT_DATA_HASH_ALGO, algo);
|
||
|
||
/* Check compliance. */
|
||
if (! gnupg_pk_is_allowed (opt.compliance, PK_USE_VERIFICATION,
|
||
pkalgo, pkalgoflags, NULL, nbits, NULL))
|
||
{
|
||
char kidstr[10+1];
|
||
|
||
snprintf (kidstr, sizeof kidstr, "0x%08lX",
|
||
gpgsm_get_short_fingerprint (cert, NULL));
|
||
log_error (_("key %s may not be used for signing in %s mode\n"),
|
||
kidstr,
|
||
gnupg_compliance_option_string (opt.compliance));
|
||
goto next_signer;
|
||
}
|
||
|
||
if (! gnupg_digest_is_allowed (opt.compliance, 0, sigval_hash_algo))
|
||
{
|
||
log_error (_("digest algorithm '%s' may not be used in %s mode\n"),
|
||
gcry_md_algo_name (sigval_hash_algo),
|
||
gnupg_compliance_option_string (opt.compliance));
|
||
goto next_signer;
|
||
}
|
||
|
||
/* Check compliance with CO_DE_VS. */
|
||
if (gnupg_pk_is_compliant (CO_DE_VS, pkalgo, pkalgoflags,
|
||
NULL, nbits, NULL)
|
||
&& gnupg_gcrypt_is_compliant (CO_DE_VS)
|
||
&& gnupg_digest_is_compliant (CO_DE_VS, sigval_hash_algo))
|
||
gpgsm_status (ctrl, STATUS_VERIFICATION_COMPLIANCE_MODE,
|
||
gnupg_status_compliance_flag (CO_DE_VS));
|
||
else if (opt.require_compliance
|
||
&& opt.compliance == CO_DE_VS)
|
||
{
|
||
log_error (_("operation forced to fail due to"
|
||
" unfulfilled compliance rules\n"));
|
||
gpgsm_errors_seen = 1;
|
||
}
|
||
|
||
|
||
/* Now we can check the signature. */
|
||
if (msgdigest)
|
||
{ /* Signed attributes are available. */
|
||
gcry_md_hd_t md;
|
||
unsigned char *s;
|
||
|
||
/* Check that the message digest in the signed attributes
|
||
matches the one we calculated on the data. */
|
||
s = gcry_md_read (data_md, algo);
|
||
if ( !s || !msgdigestlen
|
||
|| gcry_md_get_algo_dlen (algo) != msgdigestlen
|
||
|| memcmp (s, msgdigest, msgdigestlen) )
|
||
{
|
||
char *fpr;
|
||
|
||
log_error (_("invalid signature: message digest attribute "
|
||
"does not match computed one\n"));
|
||
if (DBG_X509)
|
||
{
|
||
if (msgdigest)
|
||
log_printhex (msgdigest, msgdigestlen, "message: ");
|
||
if (s)
|
||
log_printhex (s, gcry_md_get_algo_dlen (algo),
|
||
"computed: ");
|
||
}
|
||
fpr = gpgsm_fpr_and_name_for_status (cert);
|
||
gpgsm_status (ctrl, STATUS_BADSIG, fpr);
|
||
xfree (fpr);
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "bad");
|
||
goto next_signer;
|
||
}
|
||
|
||
audit_log_i (ctrl->audit, AUDIT_ATTR_HASH_ALGO, sigval_hash_algo);
|
||
rc = gcry_md_open (&md, sigval_hash_algo, 0);
|
||
if (rc)
|
||
{
|
||
log_error ("md_open failed: %s\n", gpg_strerror (rc));
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "error");
|
||
goto next_signer;
|
||
}
|
||
if (DBG_HASHING)
|
||
gcry_md_debug (md, "vrfy.attr");
|
||
|
||
ksba_cms_set_hash_function (cms, HASH_FNC, md);
|
||
rc = ksba_cms_hash_signed_attrs (cms, signer);
|
||
if (rc)
|
||
{
|
||
log_error ("hashing signed attrs failed: %s\n",
|
||
gpg_strerror (rc));
|
||
gcry_md_close (md);
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "error");
|
||
goto next_signer;
|
||
}
|
||
rc = gpgsm_check_cms_signature (cert, sigval, md, sigval_hash_algo,
|
||
pkalgoflags, &info_pkalgo);
|
||
gcry_md_close (md);
|
||
}
|
||
else
|
||
{
|
||
rc = gpgsm_check_cms_signature (cert, sigval, data_md,
|
||
algo, pkalgoflags, &info_pkalgo);
|
||
}
|
||
|
||
if (rc)
|
||
{
|
||
char *fpr;
|
||
|
||
log_error ("invalid signature: %s\n", gpg_strerror (rc));
|
||
fpr = gpgsm_fpr_and_name_for_status (cert);
|
||
gpgsm_status (ctrl, STATUS_BADSIG, fpr);
|
||
xfree (fpr);
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "bad");
|
||
goto next_signer;
|
||
}
|
||
rc = gpgsm_cert_use_verify_p (cert); /*(this displays an info message)*/
|
||
if (rc)
|
||
{
|
||
gpgsm_status_with_err_code (ctrl, STATUS_ERROR, "verify.keyusage",
|
||
gpg_err_code (rc));
|
||
rc = 0;
|
||
}
|
||
|
||
if (DBG_X509)
|
||
log_debug ("signature okay - checking certs\n");
|
||
audit_log (ctrl->audit, AUDIT_VALIDATE_CHAIN);
|
||
rc = gpgsm_validate_chain (ctrl, cert,
|
||
*sigtime? sigtime : "19700101T000000",
|
||
keyexptime, 0,
|
||
NULL, 0, &verifyflags);
|
||
{
|
||
char *fpr, *buf, *tstr;
|
||
|
||
fpr = gpgsm_fpr_and_name_for_status (cert);
|
||
if (gpg_err_code (rc) == GPG_ERR_CERT_EXPIRED)
|
||
{
|
||
gpgsm_status (ctrl, STATUS_EXPKEYSIG, fpr);
|
||
rc = 0;
|
||
}
|
||
else
|
||
gpgsm_status (ctrl, STATUS_GOODSIG, fpr);
|
||
|
||
xfree (fpr);
|
||
|
||
/* FIXME: INFO_PKALGO correctly shows ECDSA but PKALGO is then
|
||
* ECC. We should use the ECDSA here and need to find a way to
|
||
* figure this oult without using the bodus assumtion in
|
||
* gpgsm_check_cms_signature that ECC is alwas ECDSA. */
|
||
|
||
fpr = gpgsm_get_fingerprint_hexstring (cert, GCRY_MD_SHA1);
|
||
tstr = strtimestamp_r (sigtime);
|
||
buf = xasprintf ("%s %s %s %s 0 0 %d %d 00", fpr, tstr,
|
||
*sigtime? sigtime : "0",
|
||
*keyexptime? keyexptime : "0",
|
||
info_pkalgo, algo);
|
||
xfree (tstr);
|
||
xfree (fpr);
|
||
gpgsm_status (ctrl, STATUS_VALIDSIG, buf);
|
||
xfree (buf);
|
||
}
|
||
|
||
audit_log_ok (ctrl->audit, AUDIT_CHAIN_STATUS, rc);
|
||
if (rc) /* of validate_chain */
|
||
{
|
||
log_error ("invalid certification chain: %s\n", gpg_strerror (rc));
|
||
if (gpg_err_code (rc) == GPG_ERR_BAD_CERT_CHAIN
|
||
|| gpg_err_code (rc) == GPG_ERR_BAD_CERT
|
||
|| gpg_err_code (rc) == GPG_ERR_BAD_CA_CERT
|
||
|| gpg_err_code (rc) == GPG_ERR_CERT_REVOKED)
|
||
gpgsm_status_with_err_code (ctrl, STATUS_TRUST_NEVER, NULL,
|
||
gpg_err_code (rc));
|
||
else
|
||
gpgsm_status_with_err_code (ctrl, STATUS_TRUST_UNDEFINED, NULL,
|
||
gpg_err_code (rc));
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "bad");
|
||
goto next_signer;
|
||
}
|
||
|
||
audit_log_s (ctrl->audit, AUDIT_SIG_STATUS, "good");
|
||
|
||
for (i=0; (p = ksba_cert_get_subject (cert, i)); i++)
|
||
{
|
||
log_info (!i? _("Good signature from")
|
||
: _(" aka"));
|
||
log_printf (" \"");
|
||
gpgsm_es_print_name (log_get_stream (), p);
|
||
log_printf ("\"\n");
|
||
ksba_free (p);
|
||
}
|
||
|
||
|
||
/* Print a note if this is a qualified signature. */
|
||
{
|
||
size_t qualbuflen;
|
||
char qualbuffer[1];
|
||
|
||
rc = ksba_cert_get_user_data (cert, "is_qualified", &qualbuffer,
|
||
sizeof (qualbuffer), &qualbuflen);
|
||
if (!rc && qualbuflen)
|
||
{
|
||
if (*qualbuffer)
|
||
{
|
||
log_info (_("This is a qualified signature\n"));
|
||
if (!opt.qualsig_approval)
|
||
log_info
|
||
(_("Note, that this software is not officially approved "
|
||
"to create or verify such signatures.\n"));
|
||
}
|
||
}
|
||
else if (gpg_err_code (rc) != GPG_ERR_NOT_FOUND)
|
||
log_error ("get_user_data(is_qualified) failed: %s\n",
|
||
gpg_strerror (rc));
|
||
}
|
||
|
||
gpgsm_status (ctrl, STATUS_TRUST_FULLY,
|
||
(verifyflags & VALIDATE_FLAG_STEED)?
|
||
"0 steed":
|
||
(verifyflags & VALIDATE_FLAG_CHAIN_MODEL)?
|
||
"0 chain": "0 shell");
|
||
|
||
next_signer:
|
||
rc = 0;
|
||
xfree (issuer);
|
||
xfree (serial);
|
||
gcry_sexp_release (sigval);
|
||
xfree (msgdigest);
|
||
xfree (pkalgostr);
|
||
xfree (pkfpr);
|
||
ksba_cert_release (cert);
|
||
cert = NULL;
|
||
}
|
||
rc = 0;
|
||
|
||
leave:
|
||
ksba_cms_release (cms);
|
||
gnupg_ksba_destroy_reader (b64reader);
|
||
gnupg_ksba_destroy_writer (b64writer);
|
||
keydb_release (kh);
|
||
gcry_md_close (data_md);
|
||
es_fclose (in_fp);
|
||
|
||
if (rc)
|
||
{
|
||
char numbuf[50];
|
||
sprintf (numbuf, "%d", rc );
|
||
gpgsm_status2 (ctrl, STATUS_ERROR, "verify.leave",
|
||
numbuf, NULL);
|
||
}
|
||
|
||
return rc;
|
||
}
|