mirror of
git://git.gnupg.org/gnupg.git
synced 2025-01-03 12:11:33 +01:00
141 lines
3.4 KiB
C
141 lines
3.4 KiB
C
/* openfile.c
|
|
* 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 <assert.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include "util.h"
|
|
#include "memory.h"
|
|
#include "ttyio.h"
|
|
#include "options.h"
|
|
#include "main.h"
|
|
#include "status.h"
|
|
#include "i18n.h"
|
|
|
|
|
|
/****************
|
|
* 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( !fname || (*fname == '-' && !fname[1]) )
|
|
return 1; /* writing to stdout is always okay */
|
|
|
|
if( access( fname, F_OK ) )
|
|
return 1; /* does not exist */
|
|
|
|
/* 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_get_answer_is_yes(N_("openfile.overwrite.okay"),
|
|
_("Overwrite (y/N)? ")) )
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/****************
|
|
* Make an output filename for the inputfile INAME.
|
|
* Returns an IOBUF and an errorcode
|
|
* Mode 0 = use ".gpg"
|
|
* 1 = use ".asc"
|
|
* 2 = use ".sig"
|
|
*/
|
|
int
|
|
open_outfile( const char *iname, int mode, IOBUF *a )
|
|
{
|
|
int rc = 0;
|
|
|
|
*a = NULL;
|
|
if( (!iname || (*iname=='-' && !iname[1])) && !opt.outfile ) {
|
|
if( !(*a = iobuf_create(NULL)) ) {
|
|
log_error("can't open [stdout]: %s\n", strerror(errno) );
|
|
rc = G10ERR_CREATE_FILE;
|
|
}
|
|
else if( opt.verbose )
|
|
log_info("writing to stdout\n");
|
|
}
|
|
else {
|
|
char *buf=NULL;
|
|
const char *name;
|
|
|
|
if( opt.outfile )
|
|
name = opt.outfile;
|
|
else {
|
|
buf = m_alloc(strlen(iname)+4+1);
|
|
strcpy(stpcpy(buf,iname), mode==1 ? ".asc" :
|
|
mode==2 ? ".sig" : ".gpg");
|
|
name = buf;
|
|
}
|
|
if( overwrite_filep( name ) ) {
|
|
if( !(*a = iobuf_create( name )) ) {
|
|
log_error("can't create %s: %s\n", name, strerror(errno) );
|
|
rc = G10ERR_CREATE_FILE;
|
|
}
|
|
else if( opt.verbose )
|
|
log_info("writing to '%s'\n", name );
|
|
}
|
|
else
|
|
rc = G10ERR_FILE_EXISTS;
|
|
m_free(buf);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
|
|
/****************
|
|
* Try to open a file without the extension ".sig" or ".asc"
|
|
* Return NULL if such a file is not available.
|
|
*/
|
|
IOBUF
|
|
open_sigfile( const char *iname )
|
|
{
|
|
IOBUF a = NULL;
|
|
size_t len;
|
|
|
|
if( iname && !(*iname == '-' && !iname[1]) ) {
|
|
len = strlen(iname);
|
|
if( len > 4 && ( !strcmp(iname + len - 4, ".sig")
|
|
|| !strcmp(iname + len - 4, ".asc")) ) {
|
|
char *buf;
|
|
buf = m_strdup(iname);
|
|
buf[len-4] = 0 ;
|
|
a = iobuf_open( buf );
|
|
if( opt.verbose )
|
|
log_info("assuming signed data in '%s'\n", buf );
|
|
m_free(buf);
|
|
}
|
|
}
|
|
return a;
|
|
}
|
|
|