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/* import.c - Import certificates
* 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"
#include "i18n.h"
static void
print_imported_status (CTRL ctrl, KsbaCert cert)
{
char *fpr;
fpr = gpgsm_get_fingerprint_hexstring (cert, GCRY_MD_SHA1);
gpgsm_status2 (ctrl, STATUS_IMPORTED, fpr, "[X.509]", NULL);
xfree (fpr);
}
static void
check_and_store (CTRL ctrl, KsbaCert cert, int depth)
{
if ( !gpgsm_basic_cert_check (cert) )
{
int existed;
if (!keydb_store_cert (cert, 0, &existed))
{
KsbaCert next = NULL;
if (!existed)
print_imported_status (ctrl, cert);
if (opt.verbose > 1 && existed)
{
if (depth)
log_info ("issuer certificate already in DB\n");
else
log_info ("certificate already in DB\n");
}
else if (opt.verbose && !existed)
{
if (depth)
log_info ("issuer certificate imported\n");
else
log_info ("certificate imported\n");
}
/* Now lets walk up the chain and import all certificates up
the chain.*/
if ( depth >= 50 )
log_error (_("certificate path too long\n"));
else if (!gpgsm_walk_cert_chain (cert, &next))
{
check_and_store (ctrl, next, depth+1);
ksba_cert_release (next);
}
}
else
log_error (_("error storing certificate\n"));
}
else
log_error (_("basic certificate checks failed - not imported\n"));
}
int
gpgsm_import (CTRL ctrl, int in_fd)
{
int rc;
Base64Context b64reader = NULL;
KsbaReader reader;
KsbaCert cert = NULL;
KsbaCMS cms = NULL;
FILE *fp = NULL;
KsbaContentType ct;
fp = fdopen ( dup (in_fd), "rb");
if (!fp)
{
log_error ("fdopen() failed: %s\n", strerror (errno));
rc = seterr (IO_Error);
goto leave;
}
rc = gpgsm_create_reader (&b64reader, ctrl, fp, &reader);
if (rc)
{
log_error ("can't create reader: %s\n", gnupg_strerror (rc));
goto leave;
}
ct = ksba_cms_identify (reader);
if (ct == KSBA_CT_SIGNED_DATA)
{ /* This is probably a signed-only message - import the certs */
KsbaStopReason stopreason;
int i;
cms = ksba_cms_new ();
if (!cms)
{
rc = seterr (Out_Of_Core);
goto leave;
}
rc = ksba_cms_set_reader_writer (cms, reader, NULL);
if (rc)
{
log_error ("ksba_cms_set_reader_writer failed: %s\n",
ksba_strerror (rc));
rc = map_ksba_err (rc);
goto leave;
}
do
{
rc = ksba_cms_parse (cms, &stopreason);
if (rc)
{
log_error ("ksba_cms_parse failed: %s\n", ksba_strerror (rc));
rc = map_ksba_err (rc);
goto leave;
}
if (stopreason == KSBA_SR_BEGIN_DATA)
log_info ("not a certs-only message\n");
}
while (stopreason != KSBA_SR_READY);
for (i=0; (cert=ksba_cms_get_cert (cms, i)); i++)
{
check_and_store (ctrl, cert, 0);
ksba_cert_release (cert);
cert = NULL;
}
if (!i)
log_error ("no certificate found\n");
}
else if (ct == KSBA_CT_NONE)
{ /* Failed to identify this message - assume a certificate */
cert = ksba_cert_new ();
if (!cert)
{
rc = seterr (Out_Of_Core);
goto leave;
}
rc = ksba_cert_read_der (cert, reader);
if (rc)
{
rc = map_ksba_err (rc);
goto leave;
}
check_and_store (ctrl, cert, 0);
}
else
{
log_error ("can't extract certificates from input\n");
rc = GNUPG_No_Data;
}
leave:
ksba_cms_release (cms);
ksba_cert_release (cert);
gpgsm_destroy_reader (b64reader);
if (fp)
fclose (fp);
/* If we never printed an error message do it now so that a command
line invocation will return with an error (log_error keeps a
global errorcount) */
if (rc && !log_get_errorcount (0))
log_error (_("error importing certificate: %s\n"), gnupg_strerror (rc));
return rc;
}
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