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/* delete.c - Delete certificates from the keybox.
* Copyright (C) 2002, 2009 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 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*/
#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 "gpgsm.h"
#include <gcrypt.h>
#include <ksba.h>
#include "keydb.h"
#include "../common/i18n.h"
/* Delete a certificate or an secret key from a key database. */
static int
delete_one (ctrl_t ctrl, const char *username)
{
int rc = 0;
KEYDB_SEARCH_DESC desc;
KEYDB_HANDLE kh = NULL;
ksba_cert_t cert = NULL;
int duplicates = 0;
int is_ephem = 0;
rc = classify_user_id (username, &desc, 0);
if (rc)
{
log_error (_("certificate '%s' not found: %s\n"),
username, gpg_strerror (rc));
gpgsm_status2 (ctrl, STATUS_DELETE_PROBLEM, "1", NULL);
goto leave;
}
kh = keydb_new ();
if (!kh)
{
log_error ("keydb_new failed\n");
goto leave;
}
/* If the key is specified in a unique way, include ephemeral keys
in the search. */
if ( desc.mode == KEYDB_SEARCH_MODE_FPR
|| desc.mode == KEYDB_SEARCH_MODE_FPR20
|| desc.mode == KEYDB_SEARCH_MODE_FPR16
|| desc.mode == KEYDB_SEARCH_MODE_KEYGRIP )
{
is_ephem = 1;
keydb_set_ephemeral (kh, 1);
}
rc = keydb_search (ctrl, kh, &desc, 1);
if (!rc)
rc = keydb_get_cert (kh, &cert);
if (!rc && !is_ephem)
{
unsigned char fpr[20];
gpgsm_get_fingerprint (cert, 0, fpr, NULL);
next_ambigious:
rc = keydb_search (ctrl, kh, &desc, 1);
if (rc == -1)
rc = 0;
else if (!rc)
{
ksba_cert_t cert2 = NULL;
unsigned char fpr2[20];
/* We ignore all duplicated certificates which might have
been inserted due to program bugs. */
if (!keydb_get_cert (kh, &cert2))
{
gpgsm_get_fingerprint (cert2, 0, fpr2, NULL);
ksba_cert_release (cert2);
if (!memcmp (fpr, fpr2, 20))
{
duplicates++;
goto next_ambigious;
}
}
rc = gpg_error (GPG_ERR_AMBIGUOUS_NAME);
}
}
if (rc)
{
if (rc == -1)
rc = gpg_error (GPG_ERR_NO_PUBKEY);
log_error (_("certificate '%s' not found: %s\n"),
username, gpg_strerror (rc));
gpgsm_status2 (ctrl, STATUS_DELETE_PROBLEM, "3", NULL);
goto leave;
}
/* We need to search again to get back to the right position. */
rc = keydb_lock (kh);
if (rc)
{
log_error (_("error locking keybox: %s\n"), gpg_strerror (rc));
goto leave;
}
do
{
keydb_search_reset (kh);
rc = keydb_search (ctrl, kh, &desc, 1);
if (rc)
{
log_error ("problem re-searching certificate: %s\n",
gpg_strerror (rc));
goto leave;
}
rc = keydb_delete (kh, duplicates ? 0 : 1);
if (rc)
goto leave;
if (opt.verbose)
{
if (duplicates)
log_info (_("duplicated certificate '%s' deleted\n"), username);
else
log_info (_("certificate '%s' deleted\n"), username);
}
}
while (duplicates--);
leave:
keydb_release (kh);
ksba_cert_release (cert);
return rc;
}
/* Delete the certificates specified by NAMES. */
int
gpgsm_delete (ctrl_t ctrl, strlist_t names)
{
int rc;
if (!names)
{
log_error ("nothing to delete\n");
return gpg_error (GPG_ERR_NO_DATA);
}
for (; names; names=names->next )
{
rc = delete_one (ctrl, names->d);
if (rc)
{
log_error (_("deleting certificate \"%s\" failed: %s\n"),
names->d, gpg_strerror (rc) );
return rc;
}
}
return 0;
}

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