1
0
mirror of git://git.gnupg.org/gnupg.git synced 2024-06-07 23:27:48 +02:00
gnupg/g10/revoke.c

195 lines
4.9 KiB
C
Raw Normal View History

1998-02-16 21:05:02 +01:00
/* revoke.c
1998-02-24 19:50:46 +01:00
* Copyright (C) 1998 Free Software Foundation, Inc.
1998-02-16 21:05:02 +01:00
*
* This file is part of GnuPG.
1998-02-16 21:05:02 +01:00
*
* GnuPG is free software; you can redistribute it and/or modify
1998-02-16 21:05:02 +01:00
* 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,
1998-02-16 21:05:02 +01:00
* 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 "options.h"
#include "packet.h"
#include "errors.h"
#include "keydb.h"
#include "memory.h"
#include "util.h"
#include "main.h"
#include "ttyio.h"
1998-08-08 21:27:00 +02:00
#include "status.h"
#include "i18n.h"
1998-02-16 21:05:02 +01:00
/****************
* Generate a revocation certificate for UNAME
*/
int
gen_revoke( const char *uname )
{
int rc = 0;
armor_filter_context_t afx;
compress_filter_context_t zfx;
PACKET pkt;
1998-06-29 14:30:57 +02:00
PKT_secret_key *sk; /* used as pointer into a kbnode */
PKT_public_key *pk = NULL;
1998-02-16 21:05:02 +01:00
PKT_signature *sig = NULL;
1998-06-29 14:30:57 +02:00
u32 sk_keyid[2];
1998-02-16 21:05:02 +01:00
IOBUF out = NULL;
KBNODE keyblock = NULL;
KBNODE node;
KBPOS kbpos;
if( opt.batch ) {
1998-10-12 22:16:38 +02:00
log_error(_("sorry, can't do this in batch mode\n"));
1998-02-16 21:05:02 +01:00
return G10ERR_GENERAL;
}
memset( &afx, 0, sizeof afx);
memset( &zfx, 0, sizeof zfx);
init_packet( &pkt );
/* search the userid */
rc = find_secret_keyblock_byname( &kbpos, uname );
if( rc ) {
1998-10-12 22:16:38 +02:00
log_error(_("secret key for user '%s' not found\n"), uname );
1998-02-16 21:05:02 +01:00
goto leave;
}
/* read the keyblock */
rc = read_keyblock( &kbpos, &keyblock );
if( rc ) {
1998-10-12 22:16:38 +02:00
log_error(_("error reading the certificate: %s\n"), g10_errstr(rc) );
1998-02-16 21:05:02 +01:00
goto leave;
}
/* get the keyid from the keyblock */
1998-06-29 14:30:57 +02:00
node = find_kbnode( keyblock, PKT_SECRET_KEY );
1998-02-16 21:05:02 +01:00
if( !node ) { /* maybe better to use log_bug ? */
1998-10-12 22:16:38 +02:00
log_error(_("Oops; secret key not found anymore!\n"));
1998-02-16 21:05:02 +01:00
rc = G10ERR_GENERAL;
goto leave;
}
1998-04-02 12:30:03 +02:00
/* fixme: should make a function out of this stuff,
1998-02-16 21:05:02 +01:00
* it's used all over the source */
1998-06-29 14:30:57 +02:00
sk = node->pkt->pkt.secret_key;
keyid_from_sk( sk, sk_keyid );
1998-02-16 21:05:02 +01:00
tty_printf("\nsec %4u%c/%08lX %s ",
1998-06-29 14:30:57 +02:00
nbits_from_sk( sk ),
pubkey_letter( sk->pubkey_algo ),
sk_keyid[1], datestr_from_sk(sk) );
1998-02-16 21:05:02 +01:00
{
size_t n;
1998-06-29 14:30:57 +02:00
char *p = get_user_id( sk_keyid, &n );
1998-02-16 21:05:02 +01:00
tty_print_string( p, n );
m_free(p);
tty_printf("\n");
}
1998-06-29 14:30:57 +02:00
pk = m_alloc_clear( sizeof *pk );
rc = get_pubkey( pk, sk_keyid );
1998-02-16 21:05:02 +01:00
if( rc ) {
1998-10-12 22:16:38 +02:00
log_error(_("no corresponding public key: %s\n"), g10_errstr(rc) );
1998-02-16 21:05:02 +01:00
goto leave;
}
1998-06-29 14:30:57 +02:00
if( cmp_public_secret_key( pk, sk ) ) {
1998-10-12 22:16:38 +02:00
log_error(_("public key does not match secret key!\n") );
1998-02-16 21:05:02 +01:00
rc = G10ERR_GENERAL;
goto leave;
}
tty_printf("\n");
if( !cpr_get_answer_is_yes("gen_revoke.okay",
1998-08-08 21:27:00 +02:00
_("Create a revocation certificate for this key? ")) ){
1998-02-16 21:05:02 +01:00
rc = 0;
goto leave;
}
1998-06-29 14:30:57 +02:00
switch( is_secret_key_protected( sk ) ) {
1998-02-16 21:05:02 +01:00
case -1:
1998-10-12 22:16:38 +02:00
log_error(_("unknown protection algorithm\n"));
1998-02-16 21:05:02 +01:00
rc = G10ERR_PUBKEY_ALGO;
break;
case 0:
1998-11-10 13:59:59 +01:00
tty_printf(_("NOTE: This key is not protected!\n"));
1998-02-16 21:05:02 +01:00
break;
default:
1998-09-11 07:47:32 +02:00
rc = check_secret_key( sk, 0 );
1998-02-16 21:05:02 +01:00
break;
}
if( rc )
goto leave;
if( !opt.armor )
1998-10-12 22:16:38 +02:00
tty_printf(_("ASCII armored output forced.\n"));
1998-02-16 21:05:02 +01:00
1998-08-11 19:29:34 +02:00
if( (rc = open_outfile( NULL, 0, &out )) )
1998-02-16 21:05:02 +01:00
goto leave;
afx.what = 1;
afx.hdrlines = "Comment: A revocation certificate should follow\n";
1998-02-16 21:05:02 +01:00
iobuf_push_filter( out, armor_filter, &afx );
if( opt.compress )
iobuf_push_filter( out, compress_filter, &zfx );
/* create it */
1998-06-29 14:30:57 +02:00
rc = make_keysig_packet( &sig, pk, NULL, NULL, sk, 0x20, 0, NULL, NULL);
1998-02-16 21:05:02 +01:00
if( rc ) {
1998-10-12 22:16:38 +02:00
log_error(_("make_keysig_packet failed: %s\n"), g10_errstr(rc));
1998-02-16 21:05:02 +01:00
goto leave;
}
init_packet( &pkt );
pkt.pkttype = PKT_SIGNATURE;
pkt.pkt.signature = sig;
rc = build_packet( out, &pkt );
if( rc ) {
1998-10-12 22:16:38 +02:00
log_error(_("build_packet failed: %s\n"), g10_errstr(rc) );
1998-02-16 21:05:02 +01:00
goto leave;
}
/* and issue a usage notice */
1998-10-12 22:16:38 +02:00
tty_printf(_("Revocation certificate created.\n\n"
1998-04-14 19:51:16 +02:00
"Please move it to a medium which you can hide away; if Mallory gets\n"
1998-02-16 21:05:02 +01:00
"access to this certificate he can use it to make your key unusable.\n"
1998-04-14 19:51:16 +02:00
"It is smart to print this certificate and store it away, just in case\n"
"your media become unreadable. But have some caution: The print system of\n"
1998-10-12 22:16:38 +02:00
"your machine might store the data and make it available to others!\n"));
1998-02-16 21:05:02 +01:00
leave:
1998-06-29 14:30:57 +02:00
if( pk )
free_public_key( pk );
1998-02-16 21:05:02 +01:00
if( sig )
free_seckey_enc( sig );
release_kbnode( keyblock );
if( rc )
iobuf_cancel(out);
else
iobuf_close(out);
return rc;
}