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138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
/* dearmor.c - Armor utility
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* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include "gpg.h"
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#include "errors.h"
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#include "iobuf.h"
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#include "util.h"
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#include "filter.h"
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#include "packet.h"
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#include "options.h"
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#include "main.h"
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#include "i18n.h"
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/****************
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* Take an armor file and write it out without armor
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*/
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int
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dearmor_file( const char *fname )
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{
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armor_filter_context_t afx;
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IOBUF inp = NULL, out = NULL;
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int rc = 0;
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int c;
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memset( &afx, 0, sizeof afx);
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/* prepare iobufs */
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inp = iobuf_open(fname);
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if (inp && is_secured_file (iobuf_get_fd (inp)))
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{
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iobuf_close (inp);
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inp = NULL;
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errno = EPERM;
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}
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if (!inp) {
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rc = gpg_error_from_errno (errno);
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log_error(_("can't open `%s': %s\n"), fname? fname: "[stdin]",
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strerror(errno) );
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goto leave;
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}
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iobuf_push_filter( inp, armor_filter, &afx );
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if( (rc = open_outfile( fname, 0, &out )) )
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goto leave;
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while( (c = iobuf_get(inp)) != -1 )
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iobuf_put( out, c );
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leave:
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if( rc )
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iobuf_cancel(out);
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else
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iobuf_close(out);
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iobuf_close(inp);
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return rc;
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}
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/****************
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* Take file and write it out with armor
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*/
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int
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enarmor_file( const char *fname )
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{
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armor_filter_context_t afx;
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IOBUF inp = NULL, out = NULL;
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int rc = 0;
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int c;
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memset( &afx, 0, sizeof afx);
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/* prepare iobufs */
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inp = iobuf_open(fname);
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if (inp && is_secured_file (iobuf_get_fd (inp)))
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{
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iobuf_close (inp);
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inp = NULL;
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errno = EPERM;
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}
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if (!inp) {
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rc = gpg_error_from_errno (errno);
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log_error(_("can't open `%s': %s\n"), fname? fname: "[stdin]",
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strerror(errno) );
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goto leave;
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}
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if( (rc = open_outfile( fname, 1, &out )) )
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goto leave;
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afx.what = 4;
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afx.hdrlines = "Comment: Use \"gpg --dearmor\" for unpacking\n";
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iobuf_push_filter( out, armor_filter, &afx );
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while( (c = iobuf_get(inp)) != -1 )
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iobuf_put( out, c );
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leave:
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if( rc )
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iobuf_cancel(out);
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else
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iobuf_close(out);
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iobuf_close(inp);
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return rc;
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}
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