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gnupg/g10/keyedit.c

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/* keyedit.c - keyedit stuff
* Copyright (C) 1998 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"
static void show_prefs( KBNODE keyblock, PKT_user_id *uid );
static void show_key_with_all_names( KBNODE keyblock,
int only_marked, int with_fpr, int with_subkeys, int with_prefs );
static void show_key_and_fingerprint( KBNODE keyblock );
static void show_fingerprint( PKT_public_key *pk );
static int menu_adduid( KBNODE keyblock, KBNODE sec_keyblock );
static void menu_deluid( KBNODE pub_keyblock, KBNODE sec_keyblock );
static void menu_delkey( KBNODE pub_keyblock, KBNODE sec_keyblock );
static int menu_expire( KBNODE pub_keyblock, KBNODE sec_keyblock );
static int menu_select_uid( KBNODE keyblock, int index );
static int menu_select_key( KBNODE keyblock, int index );
static int count_uids( KBNODE keyblock );
static int count_uids_with_flag( KBNODE keyblock, unsigned flag );
static int count_keys_with_flag( KBNODE keyblock, unsigned flag );
static int count_selected_uids( KBNODE keyblock );
static int count_selected_keys( KBNODE keyblock );
#define CONTROL_D ('D' - 'A' + 1)
#define NODFLG_BADSIG (1<<0) /* bad signature */
#define NODFLG_NOKEY (1<<1) /* no public key */
#define NODFLG_SIGERR (1<<2) /* other sig error */
#define NODFLG_MARK_A (1<<4) /* temporary mark */
#define NODFLG_SELUID (1<<8) /* indicate the selected userid */
#define NODFLG_SELKEY (1<<9) /* indicate the selected key */
static int
get_keyblock_byname( KBNODE *keyblock, KBPOS *kbpos, const char *username )
{
int rc;
*keyblock = NULL;
/* search the userid */
rc = find_keyblock_byname( kbpos, username );
if( rc ) {
log_error(_("%s: user not found\n"), username );
return rc;
}
/* read the keyblock */
rc = read_keyblock( kbpos, keyblock );
if( rc )
log_error("%s: keyblock read problem: %s\n", username, g10_errstr(rc));
else
merge_keys_and_selfsig( *keyblock );
return rc;
}
/****************
* Check the keysigs and set the flags to indicate errors.
* Returns true if error found.
*/
static int
check_all_keysigs( KBNODE keyblock, int only_selected )
{
KBNODE kbctx;
KBNODE node;
int rc;
int inv_sigs = 0;
int no_key = 0;
int oth_err = 0;
int has_selfsig = 0;
int mis_selfsig = 0;
int selected = !only_selected;
int anyuid = 0;
for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
PKT_user_id *uid = node->pkt->pkt.user_id;
if( only_selected )
selected = (node->flag & NODFLG_SELUID);
if( selected ) {
tty_printf("uid ");
tty_print_string( uid->name, uid->len );
tty_printf("\n");
if( anyuid && !has_selfsig )
mis_selfsig++;
has_selfsig = 0;
anyuid = 1;
}
}
else if( selected && node->pkt->pkttype == PKT_SIGNATURE
&& (node->pkt->pkt.signature->sig_class&~3) == 0x10 ) {
PKT_signature *sig = node->pkt->pkt.signature;
int sigrc, selfsig;
switch( (rc = check_key_signature( keyblock, node, &selfsig)) ) {
case 0:
node->flag &= ~(NODFLG_BADSIG|NODFLG_NOKEY|NODFLG_SIGERR);
sigrc = '!';
break;
case G10ERR_BAD_SIGN:
node->flag = NODFLG_BADSIG;
sigrc = '-';
inv_sigs++;
break;
case G10ERR_NO_PUBKEY:
node->flag = NODFLG_NOKEY;
sigrc = '?';
no_key++;
break;
default:
node->flag = NODFLG_SIGERR;
sigrc = '%';
oth_err++;
break;
}
if( sigrc != '?' ) {
tty_printf("sig%c %08lX %s ",
sigrc, sig->keyid[1], datestr_from_sig(sig));
if( sigrc == '%' )
tty_printf("[%s] ", g10_errstr(rc) );
else if( sigrc == '?' )
;
else if( selfsig ) {
tty_printf( _("[self-signature]") );
if( sigrc == '!' )
has_selfsig = 1;
}
else {
size_t n;
char *p = get_user_id( sig->keyid, &n );
tty_print_string( p, n > 40? 40 : n );
m_free(p);
}
tty_printf("\n");
/* fixme: Should we update the trustdb here */
}
}
}
if( !has_selfsig )
mis_selfsig++;
if( inv_sigs == 1 )
tty_printf(_("1 bad signature\n"), inv_sigs );
else if( inv_sigs )
tty_printf(_("%d bad signatures\n"), inv_sigs );
if( no_key == 1 )
tty_printf(_("1 signature not checked due to a missing key\n") );
else if( no_key )
tty_printf(_("%d signatures not checked due to missing keys\n"), no_key );
if( oth_err == 1 )
tty_printf(_("1 signature not checked due to an error\n") );
else if( oth_err )
tty_printf(_("%d signatures not checked due to errors\n"), oth_err );
if( mis_selfsig == 1 )
tty_printf(_("1 user id without valid self-signature detected\n"));
else if( mis_selfsig )
tty_printf(_("%d user ids without valid self-signatures detected\n"),
mis_selfsig);
return inv_sigs || no_key || oth_err || mis_selfsig;
}
/****************
* Loop over all locusr and and sign the uids after asking.
* If no user id is marked, all user ids will be signed;
* if some user_ids are marked those will be signed.
*
* fixme: Add support for our proposed sign-all scheme
*/
static int
sign_uids( KBNODE keyblock, STRLIST locusr, int *ret_modified )
{
int rc = 0;
SK_LIST sk_list = NULL;
SK_LIST sk_rover = NULL;
PKT_secret_key *sk = NULL;
KBNODE node, uidnode;
PKT_public_key *primary_pk=NULL;
int select_all = !count_selected_uids(keyblock);
int upd_trust = 0;
/* build a list of all signators */
rc=build_sk_list( locusr, &sk_list, 0, 1 );
if( rc )
goto leave;
/* loop over all signaturs */
for( sk_rover = sk_list; sk_rover; sk_rover = sk_rover->next ) {
u32 sk_keyid[2];
size_t n;
char *p;
/* we have to use a copy of the sk, because make_keysig_packet
* may remove the protection from sk and if we did other
* changes to the secret key, we would save the unprotected
* version */
if( sk )
free_secret_key(sk);
sk = copy_secret_key( NULL, sk_rover->sk );
keyid_from_sk( sk, sk_keyid );
/* set mark A for all selected user ids */
for( node=keyblock; node; node = node->next ) {
if( select_all || (node->flag & NODFLG_SELUID) )
node->flag |= NODFLG_MARK_A;
else
node->flag &= ~NODFLG_MARK_A;
}
/* reset mark for uids which are already signed */
uidnode = NULL;
for( node=keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
uidnode = (node->flag & NODFLG_MARK_A)? node : NULL;
}
else if( uidnode && node->pkt->pkttype == PKT_SIGNATURE
&& (node->pkt->pkt.signature->sig_class&~3) == 0x10 ) {
if( sk_keyid[0] == node->pkt->pkt.signature->keyid[0]
&& sk_keyid[1] == node->pkt->pkt.signature->keyid[1] ) {
tty_printf(_("Already signed by key %08lX\n"),
(ulong)sk_keyid[1] );
uidnode->flag &= ~NODFLG_MARK_A; /* remove mark */
}
}
}
/* check whether any uids are left for signing */
if( !count_uids_with_flag(keyblock, NODFLG_MARK_A) ) {
tty_printf(_("Nothing to sign with key %08lX\n"),
(ulong)sk_keyid[1] );
continue;
}
/* Ask whether we really should sign these user id(s) */
tty_printf("\n");
show_key_with_all_names( keyblock, 1, 1, 0, 0 );
tty_printf("\n");
tty_printf(_(
"Are you really sure that you want to sign this key\n"
"with your key: \""));
p = get_user_id( sk_keyid, &n );
tty_print_string( p, n );
m_free(p); p = NULL;
tty_printf("\"\n\n");
if( !cpr_get_answer_is_yes(N_("sign_uid.okay"), _("Really sign? ")) )
continue;;
/* now we can sign the user ids */
reloop: /* (must use this, because we are modifing the list) */
primary_pk = NULL;
for( node=keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_KEY )
primary_pk = node->pkt->pkt.public_key;
else if( node->pkt->pkttype == PKT_USER_ID
&& (node->flag & NODFLG_MARK_A) ) {
PACKET *pkt;
PKT_signature *sig;
assert( primary_pk );
node->flag &= ~NODFLG_MARK_A;
rc = make_keysig_packet( &sig, primary_pk,
node->pkt->pkt.user_id,
NULL,
sk,
0x10, 0, NULL, NULL );
if( rc ) {
log_error(_("signing failed: %s\n"), g10_errstr(rc));
goto leave;
}
*ret_modified = 1; /* we changed the keyblock */
upd_trust = 1;
pkt = m_alloc_clear( sizeof *pkt );
pkt->pkttype = PKT_SIGNATURE;
pkt->pkt.signature = sig;
insert_kbnode( node, new_kbnode(pkt), PKT_SIGNATURE );
goto reloop;
}
}
} /* end loop over signators */
if( upd_trust && primary_pk ) {
rc = clear_trust_checked_flag( primary_pk );
}
leave:
release_sk_list( sk_list );
if( sk )
free_secret_key(sk);
return rc;
}
/****************
* Change the passphrase of the primary and all secondary keys.
* We use only one passphrase for all keys.
*/
static int
change_passphrase( KBNODE keyblock )
{
int rc = 0;
int changed=0;
KBNODE node;
PKT_secret_key *sk;
char *passphrase = NULL;
node = find_kbnode( keyblock, PKT_SECRET_KEY );
if( !node ) {
log_error("Oops; secret key not found anymore!\n");
goto leave;
}
sk = node->pkt->pkt.secret_key;
switch( is_secret_key_protected( sk ) ) {
case -1:
rc = G10ERR_PUBKEY_ALGO;
break;
case 0:
tty_printf(_("This key is not protected.\n"));
break;
default:
tty_printf(_("Key is protected.\n"));
rc = check_secret_key( sk, 0 );
if( !rc )
passphrase = get_last_passphrase();
break;
}
/* unprotect all subkeys (use the supplied passphrase or ask)*/
for(node=keyblock; !rc && node; node = node->next ) {
if( node->pkt->pkttype == PKT_SECRET_SUBKEY ) {
PKT_secret_key *subsk = node->pkt->pkt.secret_key;
set_next_passphrase( passphrase );
rc = check_secret_key( subsk, 0 );
}
}
if( rc )
tty_printf(_("Can't edit this key: %s\n"), g10_errstr(rc));
else {
DEK *dek = NULL;
STRING2KEY *s2k = m_alloc_secure( sizeof *s2k );
tty_printf(_("Enter the new passphrase for this secret key.\n\n") );
set_next_passphrase( NULL );
for(;;) {
s2k->mode = opt.s2k_mode;
s2k->hash_algo = opt.s2k_digest_algo;
dek = passphrase_to_dek( NULL, opt.s2k_cipher_algo, s2k, 2 );
if( !dek ) {
tty_printf(_("passphrase not correctly repeated; try again.\n"));
}
else if( !dek->keylen ) {
rc = 0;
tty_printf(_( "You don't want a passphrase -"
" this is probably a *bad* idea!\n\n"));
if( cpr_get_answer_is_yes(N_("change_passwd.empty.okay"),
_("Do you really want to do this? ")))
changed++;
break;
}
else { /* okay */
sk->protect.algo = dek->algo;
sk->protect.s2k = *s2k;
rc = protect_secret_key( sk, dek );
for(node=keyblock; !rc && node; node = node->next ) {
if( node->pkt->pkttype == PKT_SECRET_SUBKEY ) {
PKT_secret_key *subsk = node->pkt->pkt.secret_key;
subsk->protect.algo = dek->algo;
subsk->protect.s2k = *s2k;
rc = protect_secret_key( subsk, dek );
}
}
if( rc )
log_error("protect_secret_key failed: %s\n", g10_errstr(rc) );
else
changed++;
break;
}
}
m_free(s2k);
m_free(dek);
}
leave:
m_free( passphrase );
set_next_passphrase( NULL );
return changed && !rc;
}
/****************
* There are some keys out (due to a bug in gnupg), where the sequence
* of the packets is wrong. This function fixes that.
* Returns: true if the keyblock has fixed.
*/
static int
fix_keyblock( KBNODE keyblock )
{
KBNODE node, last, subkey;
int fixed=0;
/* locate key signatures of class 0x10..0x13 behind sub key packets */
for( subkey=last=NULL, node = keyblock; node;
last=node, node = node->next ) {
switch( node->pkt->pkttype ) {
case PKT_PUBLIC_SUBKEY:
case PKT_SECRET_SUBKEY:
if( !subkey )
subkey = last; /* actually it is the one before the subkey */
break;
case PKT_SIGNATURE:
if( subkey ) {
PKT_signature *sig = node->pkt->pkt.signature;
if( sig->sig_class >= 0x10 && sig->sig_class <= 0x13 ) {
log_info(_(
"moving a key signature to the correct place\n"));
last->next = node->next;
node->next = subkey->next;
subkey->next = node;
node = last;
fixed=1;
}
}
break;
default: break;
}
}
return fixed;
}
/****************
* Menu driven key editor
*
* Note: to keep track of some selection we use node->mark MARKBIT_xxxx.
*/
void
keyedit_menu( const char *username, STRLIST locusr )
{
enum cmdids { cmdNONE = 0,
cmdQUIT, cmdHELP, cmdFPR, cmdLIST, cmdSELUID, cmdCHECK, cmdSIGN,
cmdDEBUG, cmdSAVE, cmdADDUID, cmdDELUID, cmdADDKEY, cmdDELKEY,
cmdTOGGLE, cmdSELKEY, cmdPASSWD, cmdTRUST, cmdPREF, cmdEXPIRE,
cmdNOP };
static struct { const char *name;
enum cmdids id;
int need_sk;
const char *desc;
} cmds[] = {
{ N_("quit") , cmdQUIT , 0, N_("quit this menu") },
{ N_("q") , cmdQUIT , 0, NULL },
{ N_("save") , cmdSAVE , 0, N_("save and quit") },
{ N_("help") , cmdHELP , 0, N_("show this help") },
{ "?" , cmdHELP , 0, NULL },
{ N_("fpr") , cmdFPR , 0, N_("show fingerprint") },
{ N_("list") , cmdLIST , 0, N_("list key and user ids") },
{ N_("l") , cmdLIST , 0, NULL },
{ N_("uid") , cmdSELUID , 0, N_("select user id N") },
{ N_("key") , cmdSELKEY , 0, N_("select secondary key N") },
{ N_("check") , cmdCHECK , 0, N_("list signatures") },
{ N_("c") , cmdCHECK , 0, NULL },
{ N_("sign") , cmdSIGN , 0, N_("sign the key") },
{ N_("s") , cmdSIGN , 0, NULL },
{ N_("debug") , cmdDEBUG , 0, NULL },
{ N_("adduid") , cmdADDUID , 1, N_("add a user id") },
{ N_("deluid") , cmdDELUID , 0, N_("delete user id") },
{ N_("addkey") , cmdADDKEY , 1, N_("add a secondary key") },
{ N_("delkey") , cmdDELKEY , 0, N_("delete a secondary key") },
{ N_("expire") , cmdEXPIRE , 1, N_("change the expire date") },
{ N_("toggle") , cmdTOGGLE , 1, N_("toggle between secret "
"and public key listing") },
{ N_("t" ) , cmdTOGGLE , 1, NULL },
{ N_("pref") , cmdPREF , 0, N_("list preferences") },
{ N_("passwd") , cmdPASSWD , 1, N_("change the passphrase") },
{ N_("trust") , cmdTRUST , 0, N_("change the ownertrust") },
{ NULL, cmdNONE } };
enum cmdids cmd;
int rc = 0;
KBNODE keyblock = NULL;
KBPOS keyblockpos;
KBNODE sec_keyblock = NULL;
KBPOS sec_keyblockpos;
KBNODE cur_keyblock;
char *answer = NULL;
int redisplay = 1;
int modified = 0;
int sec_modified = 0;
int toggle;
if( opt.batch ) {
log_error(_("can't do that in batchmode\n"));
goto leave;
}
/* first try to locate it as secret key */
rc = find_secret_keyblock_byname( &sec_keyblockpos, username );
if( !rc ) {
rc = read_keyblock( &sec_keyblockpos, &sec_keyblock );
if( rc ) {
log_error("%s: secret keyblock read problem: %s\n",
username, g10_errstr(rc));
goto leave;
}
merge_keys_and_selfsig( sec_keyblock );
if( fix_keyblock( sec_keyblock ) )
sec_modified++;
}
/* and now get the public key */
rc = get_keyblock_byname( &keyblock, &keyblockpos, username );
if( rc )
goto leave;
if( fix_keyblock( keyblock ) )
modified++;
if( sec_keyblock ) { /* check that they match */
/* FIXME: check that they both match */
tty_printf(_("Secret key is available.\n"));
}
toggle = 0;
cur_keyblock = keyblock;
for(;;) { /* main loop */
int i, arg_number;
char *p;
tty_printf("\n");
if( redisplay ) {
show_key_with_all_names( cur_keyblock, 0, 0, 1, 0 );
tty_printf("\n");
redisplay = 0;
}
do {
m_free(answer);
answer = cpr_get(N_("keyedit.cmd"), _("Command> "));
cpr_kill_prompt();
trim_spaces(answer);
} while( *answer == '#' );
arg_number = 0;
if( !*answer )
cmd = cmdLIST;
else if( *answer == CONTROL_D )
cmd = cmdQUIT;
else if( isdigit( *answer ) ) {
cmd = cmdSELUID;
arg_number = atoi(answer);
}
else {
if( (p=strchr(answer,' ')) ) {
*p++ = 0;
trim_spaces(answer);
trim_spaces(p);
arg_number = atoi(p);
}
for(i=0; cmds[i].name; i++ )
if( !stricmp( answer, cmds[i].name ) )
break;
if( cmds[i].need_sk && !sec_keyblock ) {
tty_printf(_("Need the secret key to to this.\n"));
cmd = cmdNOP;
}
else
cmd = cmds[i].id;
}
switch( cmd ) {
case cmdHELP:
for(i=0; cmds[i].name; i++ ) {
if( cmds[i].need_sk && !sec_keyblock )
; /* skip if we do not have the secret key */
else if( cmds[i].desc )
tty_printf("%-10s %s\n", cmds[i].name, _(cmds[i].desc) );
}
break;
case cmdQUIT:
if( !modified && !sec_modified )
goto leave;
if( !cpr_get_answer_is_yes(N_("keyedit.save.okay"),
_("Save changes? ")) ) {
if( cpr_enabled()
|| cpr_get_answer_is_yes(N_("keyedit.cancel.okay"),
_("Quit without saving? ")) )
goto leave;
break;
}
/* fall thru */
case cmdSAVE:
if( modified || sec_modified ) {
if( modified ) {
rc = update_keyblock( &keyblockpos, keyblock );
if( rc ) {
log_error(_("update failed: %s\n"), g10_errstr(rc) );
break;
}
}
if( sec_modified ) {
rc = update_keyblock( &sec_keyblockpos, sec_keyblock );
if( rc ) {
log_error(_("update secret failed: %s\n"),
g10_errstr(rc) );
break;
}
}
}
else
tty_printf(_("Key not changed so no update needed.\n"));
rc = update_trust_record( keyblock, 0, NULL );
if( rc )
log_error(_("update of trust db failed: %s\n"),
g10_errstr(rc) );
goto leave;
case cmdLIST:
redisplay = 1;
break;
case cmdFPR:
show_key_and_fingerprint( keyblock );
break;
case cmdSELUID:
if( menu_select_uid( cur_keyblock, arg_number ) )
redisplay = 1;
break;
case cmdSELKEY:
if( menu_select_key( cur_keyblock, arg_number ) )
redisplay = 1;
break;
case cmdCHECK:
/* we can only do this with the public key becuase the
* check functions can't cope with secret keys and it
* is questionable whether this would make sense at all */
check_all_keysigs( keyblock, count_selected_uids(keyblock) );
break;
case cmdSIGN: /* sign (only the public key) */
if( count_uids(keyblock) > 1 && !count_selected_uids(keyblock) ) {
if( !cpr_get_answer_is_yes(N_("keyedit.sign_all.okay"),
_("Really sign all user ids? ")) ) {
tty_printf(_("Hint: Select the user ids to sign\n"));
break;
}
}
sign_uids( keyblock, locusr, &modified );
break;
case cmdDEBUG:
dump_kbnode( cur_keyblock );
break;
case cmdTOGGLE:
toggle = !toggle;
cur_keyblock = toggle? sec_keyblock : keyblock;
redisplay = 1;
break;
case cmdADDUID:
if( menu_adduid( keyblock, sec_keyblock ) ) {
redisplay = 1;
sec_modified = modified = 1;
/* must update the trustdb already here, so that preferences
* get listed correctly */
rc = update_trust_record( keyblock, 0, NULL );
if( rc ) {
log_error(_("update of trust db failed: %s\n"),
g10_errstr(rc) );
rc = 0;
}
}
break;
case cmdDELUID: {
int n1;
if( !(n1=count_selected_uids(keyblock)) )
tty_printf(_("You must select at least one user id.\n"));
else if( count_uids(keyblock) - n1 < 1 )
tty_printf(_("You can't delete the last user id!\n"));
else if( cpr_get_answer_is_yes(
N_("keyedit.remove.uid.okay"),
n1 > 1? _("Really remove all selected user ids? ")
: _("Really remove this user id? ")
) ) {
menu_deluid( keyblock, sec_keyblock );
redisplay = 1;
modified = 1;
if( sec_keyblock )
sec_modified = 1;
}
}
break;
case cmdADDKEY:
if( generate_subkeypair( keyblock, sec_keyblock ) ) {
redisplay = 1;
sec_modified = modified = 1;
}
break;
case cmdDELKEY: {
int n1;
if( !(n1=count_selected_keys( keyblock )) )
tty_printf(_("You must select at least one key.\n"));
else if( sec_keyblock && !cpr_get_answer_is_yes(
N_("keyedit.remove.subkey.okay"),
n1 > 1?
_("Do you really want to delete the selected keys? "):
_("Do you really want to delete this key? ")
))
;
else {
menu_delkey( keyblock, sec_keyblock );
redisplay = 1;
modified = 1;
if( sec_keyblock )
sec_modified = 1;
}
}
break;
case cmdEXPIRE:
if( menu_expire( keyblock, sec_keyblock ) ) {
merge_keys_and_selfsig( sec_keyblock );
merge_keys_and_selfsig( keyblock );
sec_modified = 1;
modified = 1;
redisplay = 1;
}
break;
case cmdPASSWD:
if( change_passphrase( sec_keyblock ) )
sec_modified = 1;
break;
case cmdTRUST:
show_key_with_all_names( keyblock, 0, 0, 1, 0 );
tty_printf("\n");
if( edit_ownertrust( find_kbnode( keyblock,
PKT_PUBLIC_KEY )->pkt->pkt.public_key->local_id, 1 ) )
redisplay = 1;
/* we don't need to set modified here, as the trustvalues
* are updated immediately */
break;
case cmdPREF:
show_key_with_all_names( keyblock, 0, 0, 0, 1 );
break;
case cmdNOP:
break;
default:
tty_printf("\n");
tty_printf(_("Invalid command (try \"help\")\n"));
break;
}
} /* end main loop */
leave:
release_kbnode( keyblock );
release_kbnode( sec_keyblock );
m_free(answer);
}
/****************
* show preferences of a public keyblock.
*/
static void
show_prefs( KBNODE keyblock, PKT_user_id *uid )
{
KBNODE node = find_kbnode( keyblock, PKT_PUBLIC_KEY );
PKT_public_key *pk;
byte *p;
int i;
size_t n;
byte namehash[20];
if( !node )
return; /* is a secret keyblock */
pk = node->pkt->pkt.public_key;
if( !pk->local_id ) {
log_error("oops: no LID\n");
return;
}
rmd160_hash_buffer( namehash, uid->name, uid->len );
p = get_pref_data( pk->local_id, namehash, &n );
if( !p )
return;
tty_printf(" ");
for(i=0; i < n; i+=2 ) {
if( p[i] )
tty_printf( " %c%d", p[i] == PREFTYPE_SYM ? 'S' :
p[i] == PREFTYPE_HASH ? 'H' :
p[i] == PREFTYPE_COMPR ? 'Z' : '?', p[i+1]);
}
tty_printf("\n");
m_free(p);
}
/****************
* Display the key a the user ids, if only_marked is true, do only
* so for user ids with mark A flag set and dont display the index number
*/
static void
show_key_with_all_names( KBNODE keyblock, int only_marked,
int with_fpr, int with_subkeys, int with_prefs )
{
KBNODE node;
int i;
/* the keys */
for( node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_KEY
|| (with_subkeys && node->pkt->pkttype == PKT_PUBLIC_SUBKEY) ) {
PKT_public_key *pk = node->pkt->pkt.public_key;
int otrust=0, trust=0;
if( node->pkt->pkttype == PKT_PUBLIC_KEY ) {
/* do it here, so that debug messages don't clutter the
* output */
trust = query_trust_info(pk);
otrust = get_ownertrust_info( pk->local_id );
}
tty_printf("%s%c %4u%c/%08lX created: %s expires: %s",
node->pkt->pkttype == PKT_PUBLIC_KEY? "pub":"sub",
(node->flag & NODFLG_SELKEY)? '*':' ',
nbits_from_pk( pk ),
pubkey_letter( pk->pubkey_algo ),
(ulong)keyid_from_pk(pk,NULL),
datestr_from_pk(pk),
expirestr_from_pk(pk) );
if( node->pkt->pkttype == PKT_PUBLIC_KEY ) {
tty_printf(" trust: %c/%c", otrust, trust );
if( with_fpr ) {
tty_printf("\n");
show_fingerprint( pk );
}
}
tty_printf("\n");
}
else if( node->pkt->pkttype == PKT_SECRET_KEY
|| (with_subkeys && node->pkt->pkttype == PKT_SECRET_SUBKEY) ) {
PKT_secret_key *sk = node->pkt->pkt.secret_key;
tty_printf("%s%c %4u%c/%08lX created: %s expires: %s\n",
node->pkt->pkttype == PKT_SECRET_KEY? "sec":"sbb",
(node->flag & NODFLG_SELKEY)? '*':' ',
nbits_from_sk( sk ),
pubkey_letter( sk->pubkey_algo ),
(ulong)keyid_from_sk(sk,NULL),
datestr_from_sk(sk),
expirestr_from_sk(sk) );
}
}
/* the user ids */
i = 0;
for( node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
PKT_user_id *uid = node->pkt->pkt.user_id;
++i;
if( !only_marked || (only_marked && (node->flag & NODFLG_MARK_A))){
if( only_marked )
tty_printf(" ");
else if( node->flag & NODFLG_SELUID )
tty_printf("(%d)* ", i);
else
tty_printf("(%d) ", i);
tty_print_string( uid->name, uid->len );
tty_printf("\n");
if( with_prefs )
show_prefs( keyblock, uid );
}
}
}
}
static void
show_key_and_fingerprint( KBNODE keyblock )
{
KBNODE node;
PKT_public_key *pk = NULL;
for( node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_KEY ) {
pk = node->pkt->pkt.public_key;
tty_printf("pub %4u%c/%08lX %s ",
nbits_from_pk( pk ),
pubkey_letter( pk->pubkey_algo ),
(ulong)keyid_from_pk(pk,NULL),
datestr_from_pk(pk) );
}
else if( node->pkt->pkttype == PKT_USER_ID ) {
PKT_user_id *uid = node->pkt->pkt.user_id;
tty_print_string( uid->name, uid->len );
break;
}
}
tty_printf("\n");
if( pk )
show_fingerprint( pk );
}
static void
show_fingerprint( PKT_public_key *pk )
{
byte array[MAX_FINGERPRINT_LEN], *p;
size_t i, n;
fingerprint_from_pk( pk, array, &n );
p = array;
tty_printf(" Fingerprint:");
if( n == 20 ) {
for(i=0; i < n ; i++, i++, p += 2 ) {
if( i == 10 )
tty_printf(" ");
tty_printf(" %02X%02X", *p, p[1] );
}
}
else {
for(i=0; i < n ; i++, p++ ) {
if( i && !(i%8) )
tty_printf(" ");
tty_printf(" %02X", *p );
}
}
tty_printf("\n");
}
/****************
* Ask for a new user id , do the selfsignature and put it into
* both keyblocks.
* Return true if there is a new user id
*/
static int
menu_adduid( KBNODE pub_keyblock, KBNODE sec_keyblock )
{
PKT_user_id *uid;
PKT_public_key *pk=NULL;
PKT_secret_key *sk=NULL;
PKT_signature *sig=NULL;
PACKET *pkt;
KBNODE node;
KBNODE pub_where=NULL, sec_where=NULL;
int rc;
uid = generate_user_id();
if( !uid )
return 0;
for( node = pub_keyblock; node; pub_where = node, node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_KEY )
pk = node->pkt->pkt.public_key;
else if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY )
break;
}
if( !node ) /* no subkey */
pub_where = NULL;
for( node = sec_keyblock; node; sec_where = node, node = node->next ) {
if( node->pkt->pkttype == PKT_SECRET_KEY )
sk = copy_secret_key( NULL, node->pkt->pkt.secret_key);
else if( node->pkt->pkttype == PKT_SECRET_SUBKEY )
break;
}
if( !node ) /* no subkey */
sec_where = NULL;
assert(pk && sk );
rc = make_keysig_packet( &sig, pk, uid, NULL, sk, 0x13, 0,
keygen_add_std_prefs, sk );
free_secret_key( sk );
if( rc ) {
log_error("signing failed: %s\n", g10_errstr(rc) );
free_user_id(uid);
return 0;
}
/* insert/append to secret keyblock */
pkt = m_alloc_clear( sizeof *pkt );
pkt->pkttype = PKT_USER_ID;
pkt->pkt.user_id = copy_user_id(NULL, uid);
node = new_kbnode(pkt);
if( sec_where )
insert_kbnode( sec_where, node, 0 );
else
add_kbnode( sec_keyblock, node );
pkt = m_alloc_clear( sizeof *pkt );
pkt->pkttype = PKT_SIGNATURE;
pkt->pkt.signature = copy_signature(NULL, sig);
if( sec_where )
insert_kbnode( node, new_kbnode(pkt), 0 );
else
add_kbnode( sec_keyblock, new_kbnode(pkt) );
/* insert/append to public keyblock */
pkt = m_alloc_clear( sizeof *pkt );
pkt->pkttype = PKT_USER_ID;
pkt->pkt.user_id = uid;
node = new_kbnode(pkt);
if( pub_where )
insert_kbnode( pub_where, node, 0 );
else
add_kbnode( pub_keyblock, node );
pkt = m_alloc_clear( sizeof *pkt );
pkt->pkttype = PKT_SIGNATURE;
pkt->pkt.signature = copy_signature(NULL, sig);
if( pub_where )
insert_kbnode( node, new_kbnode(pkt), 0 );
else
add_kbnode( pub_keyblock, new_kbnode(pkt) );
return 1;
}
/****************
* Remove all selceted userids from the keyrings
*/
static void
menu_deluid( KBNODE pub_keyblock, KBNODE sec_keyblock )
{
KBNODE node;
int selected=0;
for( node = pub_keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
selected = node->flag & NODFLG_SELUID;
if( selected ) {
delete_kbnode( node );
if( sec_keyblock ) {
KBNODE snode;
int s_selected = 0;
PKT_user_id *uid = node->pkt->pkt.user_id;
for( snode = sec_keyblock; snode; snode = snode->next ) {
if( snode->pkt->pkttype == PKT_USER_ID ) {
PKT_user_id *suid = snode->pkt->pkt.user_id;
s_selected =
(uid->len == suid->len
&& !memcmp( uid->name, suid->name, uid->len));
if( s_selected )
delete_kbnode( snode );
}
else if( s_selected
&& snode->pkt->pkttype == PKT_SIGNATURE )
delete_kbnode( snode );
else if( snode->pkt->pkttype == PKT_SECRET_SUBKEY )
s_selected = 0;
}
}
}
}
else if( selected && node->pkt->pkttype == PKT_SIGNATURE )
delete_kbnode( node );
else if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY )
selected = 0;
}
commit_kbnode( &pub_keyblock );
if( sec_keyblock )
commit_kbnode( &sec_keyblock );
}
/****************
* Remove some of the secondary keys
*/
static void
menu_delkey( KBNODE pub_keyblock, KBNODE sec_keyblock )
{
KBNODE node;
int selected=0;
for( node = pub_keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY ) {
selected = node->flag & NODFLG_SELKEY;
if( selected ) {
delete_kbnode( node );
if( sec_keyblock ) {
KBNODE snode;
int s_selected = 0;
u32 ki[2];
keyid_from_pk( node->pkt->pkt.public_key, ki );
for( snode = sec_keyblock; snode; snode = snode->next ) {
if( snode->pkt->pkttype == PKT_SECRET_SUBKEY ) {
u32 ki2[2];
keyid_from_sk( snode->pkt->pkt.secret_key, ki2 );
s_selected = (ki[0] == ki2[0] && ki[1] == ki2[1]);
if( s_selected )
delete_kbnode( snode );
}
else if( s_selected
&& snode->pkt->pkttype == PKT_SIGNATURE )
delete_kbnode( snode );
else
s_selected = 0;
}
}
}
}
else if( selected && node->pkt->pkttype == PKT_SIGNATURE )
delete_kbnode( node );
else
selected = 0;
}
commit_kbnode( &pub_keyblock );
if( sec_keyblock )
commit_kbnode( &sec_keyblock );
}
static int
menu_expire( KBNODE pub_keyblock, KBNODE sec_keyblock )
{
int n1, rc;
u32 expiredate;
int mainkey=0;
PKT_secret_key *sk; /* copy of the main sk */
PKT_public_key *main_pk, *sub_pk;
PKT_user_id *uid;
KBNODE node;
u32 keyid[2];
if( count_selected_keys( sec_keyblock ) ) {
tty_printf(_("Please remove selections from the secret keys.\n"));
return 0;
}
n1 = count_selected_keys( pub_keyblock );
if( n1 > 1 ) {
tty_printf(_("Please select at most one secondary key.\n"));
return 0;
}
else if( n1 )
tty_printf(_("Changing exiration time for a secondary key.\n"));
else {
tty_printf(_("Changing exiration time for the primary key.\n"));
mainkey=1;
}
expiredate = ask_expiredate();
/* fixme: check that expiredate is > key creation date */
/* get the secret key , make a copy and set the expiration time into
* that key (because keygen_add-key-expire expects it there)
*/
node = find_kbnode( sec_keyblock, PKT_SECRET_KEY );
sk = copy_secret_key( NULL, node->pkt->pkt.secret_key);
sk->expiredate = expiredate;
/* Now we can actually change the self signature(s) */
main_pk = sub_pk = NULL;
uid = NULL;
for( node=pub_keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_KEY ) {
main_pk = node->pkt->pkt.public_key;
keyid_from_pk( main_pk, keyid );
}
else if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY
&& (node->flag & NODFLG_SELKEY ) )
sub_pk = node->pkt->pkt.public_key;
else if( node->pkt->pkttype == PKT_USER_ID )
uid = node->pkt->pkt.user_id;
else if( main_pk && node->pkt->pkttype == PKT_SIGNATURE ) {
PKT_signature *sig = node->pkt->pkt.signature;
if( keyid[0] == sig->keyid[0] && keyid[1] == sig->keyid[1]
&& ( (mainkey && uid && (sig->sig_class&~3) == 0x10)
|| (!mainkey && sig->sig_class == 0x18) ) ) {
/* this is a selfsignature which should be replaced */
PKT_signature *newsig;
PACKET *newpkt;
KBNODE sn;
/* find the corresponding secret self-signature */
for( sn=sec_keyblock; sn; sn = sn->next ) {
if( sn->pkt->pkttype == PKT_SIGNATURE
&& !cmp_signatures( sn->pkt->pkt.signature, sig ) )
break;
}
if( !sn )
log_info(_("No corresponding signature in secret ring\n"));
/* create new self signature */
if( mainkey )
rc = make_keysig_packet( &newsig, main_pk, uid, NULL,
sk, 0x13, 0,
keygen_add_std_prefs, sk );
else
rc = make_keysig_packet( &newsig, main_pk, NULL, sub_pk,
sk, 0x18, 0,
keygen_add_key_expire, sk );
if( rc ) {
log_error("make_keysig_packet failed: %s\n",
g10_errstr(rc));
free_secret_key( sk );
return 0;
}
/* replace the packet */
newpkt = m_alloc_clear( sizeof *newpkt );
newpkt->pkttype = PKT_SIGNATURE;
newpkt->pkt.signature = newsig;
free_packet( node->pkt );
m_free( node->pkt );
node->pkt = newpkt;
if( sn ) {
newpkt = m_alloc_clear( sizeof *newpkt );
newpkt->pkttype = PKT_SIGNATURE;
newpkt->pkt.signature = copy_signature( NULL, newsig );
free_packet( sn->pkt );
m_free( sn->pkt );
sn->pkt = newpkt;
}
}
}
}
free_secret_key( sk );
return 1;
}
/****************
* Select one user id or remove all selection if index is 0.
* Returns: True if the selection changed;
*/
static int
menu_select_uid( KBNODE keyblock, int index )
{
KBNODE node;
int i;
/* first check that the index is valid */
if( index ) {
for( i=0, node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
if( ++i == index )
break;
}
}
if( !node ) {
tty_printf(_("No user id with index %d\n"), index );
return 0;
}
}
else { /* reset all */
for( i=0, node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_USER_ID )
node->flag &= ~NODFLG_SELUID;
}
return 1;
}
/* and toggle the new index */
for( i=0, node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
if( ++i == index )
if( (node->flag & NODFLG_SELUID) )
node->flag &= ~NODFLG_SELUID;
else
node->flag |= NODFLG_SELUID;
}
}
return 1;
}
/****************
* Select secondary keys
* Returns: True if the selection changed;
*/
static int
menu_select_key( KBNODE keyblock, int index )
{
KBNODE node;
int i;
/* first check that the index is valid */
if( index ) {
for( i=0, node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| node->pkt->pkttype == PKT_SECRET_SUBKEY ) {
if( ++i == index )
break;
}
}
if( !node ) {
tty_printf(_("No secondary key with index %d\n"), index );
return 0;
}
}
else { /* reset all */
for( i=0, node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| node->pkt->pkttype == PKT_SECRET_SUBKEY )
node->flag &= ~NODFLG_SELKEY;
}
return 1;
}
/* and set the new index */
for( i=0, node = keyblock; node; node = node->next ) {
if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| node->pkt->pkttype == PKT_SECRET_SUBKEY ) {
if( ++i == index )
if( (node->flag & NODFLG_SELKEY) )
node->flag &= ~NODFLG_SELKEY;
else
node->flag |= NODFLG_SELKEY;
}
}
return 1;
}
static int
count_uids_with_flag( KBNODE keyblock, unsigned flag )
{
KBNODE node;
int i=0;
for( node = keyblock; node; node = node->next )
if( node->pkt->pkttype == PKT_USER_ID && (node->flag & flag) )
i++;
return i;
}
static int
count_keys_with_flag( KBNODE keyblock, unsigned flag )
{
KBNODE node;
int i=0;
for( node = keyblock; node; node = node->next )
if( ( node->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| node->pkt->pkttype == PKT_SECRET_SUBKEY)
&& (node->flag & flag) )
i++;
return i;
}
static int
count_uids( KBNODE keyblock )
{
KBNODE node;
int i=0;
for( node = keyblock; node; node = node->next )
if( node->pkt->pkttype == PKT_USER_ID )
i++;
return i;
}
/****************
* Returns true if there is at least one selected user id
*/
static int
count_selected_uids( KBNODE keyblock )
{
return count_uids_with_flag( keyblock, NODFLG_SELUID);
}
static int
count_selected_keys( KBNODE keyblock )
{
return count_keys_with_flag( keyblock, NODFLG_SELKEY);
}
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