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/* delkey.c - delete keys
* Copyright (C) 1998, 1999, 2000, 2001, 2002,
* 2004 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 <assert.h>
#include <ctype.h>
#include "options.h"
#include "packet.h"
#include "errors.h"
#include "iobuf.h"
#include "keydb.h"
#include "memory.h"
#include "util.h"
#include "main.h"
#include "trustdb.h"
#include "filter.h"
#include "ttyio.h"
#include "status.h"
#include "i18n.h"
/****************
* Delete a public or secret key from a keyring.
* r_sec_avail will be set if a secret key is available and the public
* key can't be deleted for that reason.
*/
static int
do_delete_key( const char *username, int secret, int *r_sec_avail )
{
int rc = 0;
KBNODE keyblock = NULL;
KBNODE node;
KEYDB_HANDLE hd = keydb_new (secret);
PKT_public_key *pk = NULL;
PKT_secret_key *sk = NULL;
u32 keyid[2];
int okay=0;
int yes;
KEYDB_SEARCH_DESC desc;
int exactmatch;
*r_sec_avail = 0;
/* search the userid */
classify_user_id (username, &desc);
exactmatch = (desc.mode == KEYDB_SEARCH_MODE_FPR
|| desc.mode == KEYDB_SEARCH_MODE_FPR16
|| desc.mode == KEYDB_SEARCH_MODE_FPR20);
rc = desc.mode? keydb_search (hd, &desc, 1):G10ERR_INV_USER_ID;
if (rc) {
log_error (_("key `%s' not found: %s\n"), username, g10_errstr (rc));
write_status_text( STATUS_DELETE_PROBLEM, "1" );
goto leave;
}
/* read the keyblock */
rc = keydb_get_keyblock (hd, &keyblock );
if (rc) {
log_error (_("error reading keyblock: %s\n"), g10_errstr(rc) );
goto leave;
}
/* get the keyid from the keyblock */
node = find_kbnode( keyblock, secret? PKT_SECRET_KEY:PKT_PUBLIC_KEY );
if( !node ) {
log_error("Oops; key not found anymore!\n");
rc = G10ERR_GENERAL;
goto leave;
}
if( secret ) {
sk = node->pkt->pkt.secret_key;
keyid_from_sk( sk, keyid );
}
else {
pk = node->pkt->pkt.public_key;
keyid_from_pk( pk, keyid );
rc = seckey_available( keyid );
if( !rc && !opt.expert ) {
*r_sec_avail = 1;
rc = -1;
goto leave;
}
else if( rc != G10ERR_NO_SECKEY ) {
log_error("%s: get secret key: %s\n", username, g10_errstr(rc) );
}
else
rc = 0;
}
if( rc )
rc = 0;
else if (opt.batch && exactmatch)
okay++;
else if( opt.batch && secret )
{
log_error(_("can't do that in batchmode\n"));
log_info (_("(unless you specify the key by fingerprint)\n"));
}
else if( opt.batch && opt.answer_yes )
okay++;
else if( opt.batch )
{
log_error(_("can't do that in batchmode without \"--yes\"\n"));
log_info (_("(unless you specify the key by fingerprint)\n"));
}
else {
if( secret )
print_seckey_info( sk );
else
print_pubkey_info(NULL, pk );
tty_printf( "\n" );
yes = cpr_get_answer_is_yes( secret? "delete_key.secret.okay"
: "delete_key.okay",
_("Delete this key from the keyring? "));
if( !cpr_enabled() && secret && yes ) {
/* I think it is not required to check a passphrase; if
* the user is so stupid as to let others access his secret keyring
* (and has no backup) - it is up him to read some very
* basic texts about security.
*/
yes = cpr_get_answer_is_yes("delete_key.secret.okay",
_("This is a secret key! - really delete? "));
}
if( yes )
okay++;
}
if( okay ) {
rc = keydb_delete_keyblock (hd);
if (rc) {
log_error (_("deleting keyblock failed: %s\n"), g10_errstr(rc) );
goto leave;
}
/* Note that the ownertrust being cleared will trigger a
revalidation_mark(). This makes sense - only deleting keys
that have ownertrust set should trigger this. */
if (!secret && pk && clear_ownertrusts (pk)) {
if (opt.verbose)
log_info (_("ownertrust information cleared\n"));
}
}
leave:
keydb_release (hd);
release_kbnode (keyblock);
return rc;
}
/****************
* Delete a public or secret key from a keyring.
*/
int
delete_keys( STRLIST names, int secret, int allow_both )
{
int rc, avail;
for(;names;names=names->next) {
rc = do_delete_key (names->d, secret, &avail );
if ( rc && avail ) {
if ( allow_both ) {
rc = do_delete_key (names->d, 1, &avail );
if ( !rc )
rc = do_delete_key (names->d, 0, &avail );
}
else {
log_error(_(
"there is a secret key for public key \"%s\"!\n"),names->d);
log_info(_(
"use option \"--delete-secret-keys\" to delete it first.\n"));
write_status_text( STATUS_DELETE_PROBLEM, "2" );
return rc;
}
}
if(rc) {
log_error("%s: delete key failed: %s\n", names->d, g10_errstr(rc) );
return rc;
}
}
return 0;
}
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