/*
* Check whether FNAME exists and ask if it's okay to overwrite an
* existing one.
* Returns: True: it's okay to overwrite or the file does not exist
* False: Do not overwrite
*/
int
overwrite_filep( const char *fname )
{
if ( iobuf_is_pipe_filename (fname) )
return 1; /* Writing to stdout is always okay. */
if ( access( fname, F_OK ) )
return 1; /* Does not exist. */
if ( !compare_filenames (fname, NAME_OF_DEV_NULL) )
return 1; /* Does not do any harm. */
if (opt.answer_yes)
return 1;
if (opt.answer_no || opt.batch)
return 0; /* Do not overwrite. */
tty_printf (_("File '%s' exists. "), fname);
if (cpr_enabled ())
tty_printf ("\n");
if (cpr_get_answer_is_yes ("openfile.overwrite.okay",
_("Overwrite? (y/N) ")) )
return 1;
return 0;
}
/****************
* Check whether FNAME exists and ask if it's okay to overwrite an
* existing one.
* Returns: True: it's okay to overwrite or the file does not exist
* False: Do not overwrite
*/
int
overwrite_filep( const char *fname )
{
if( iobuf_is_pipe_filename (fname) )
return 1; /* Writing to stdout is always okay */
if( access( fname, F_OK ) )
return 1; /* does not exist */
#ifndef HAVE_DOSISH_SYSTEM
if ( !strcmp ( fname, "/dev/null" ) )
return 1; /* does not do any harm */
#endif
#ifdef HAVE_W32_SYSTEM
if ( !strcmp ( fname, "nul" ) )
return 1;
#endif
/* fixme: add some backup stuff in case of overwrite */
if( opt.answer_yes )
return 1;
if( opt.answer_no || opt.batch )
return 0; /* do not overwrite */
tty_printf(_("File `%s' exists. "), fname);
if( cpr_enabled () )
tty_printf ("\n");
if( cpr_get_answer_is_yes("openfile.overwrite.okay",
_("Overwrite? (y/N) ")) )
return 1;
return 0;
}
/****************
* 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 force, 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
{
/* public */
pk = node->pkt->pkt.public_key;
keyid_from_pk( pk, keyid );
if(!force)
{
rc = seckey_available( keyid );
if( !rc )
{
*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 this in batch mode\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 this in batch mode 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? (y/N) "));
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? (y/N) "));
}
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;
}
