1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* 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"
#ifdef USE_ONLY_8DOT3
#define SKELEXT ".skl"
#else
#define SKELEXT ".skel"
#endif
/****************
* 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("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(_("%s: can't open: %s\n"), "[stdout]", 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.dry_run )
name = "/dev/null";
else if( opt.outfile )
name = opt.outfile;
else {
#ifdef USE_ONLY_8DOT3
#error please implement this
#endif
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(_("%s: can't create: %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;
#ifdef USE_ONLY_8DOT3
#error please implement this
#endif
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;
}
/****************
* Copy the option file skeleton to the given directory.
*/
void
copy_options_file( const char *destdir )
{
const char *datadir = GNUPG_DATADIR;
char *fname;
FILE *src, *dst;
int linefeeds=0;
int c;
if( opt.dry_run )
return;
fname = m_alloc( strlen(datadir) + strlen(destdir) + 15 );
strcpy(stpcpy(fname, datadir), "/options" SKELEXT );
src = fopen( fname, "r" );
if( !src ) {
log_error(_("%s: can't open: %s\n"), fname, strerror(errno) );
m_free(fname);
return;
}
strcpy(stpcpy(fname, destdir), "/options" );
dst = fopen( fname, "w" );
if( !dst ) {
log_error(_("%s: can't create: %s\n"), fname, strerror(errno) );
fclose( src );
m_free(fname);
return;
}
while( (c=getc(src)) != EOF ) {
if( linefeeds < 3 ) {
if( c == '\n' )
linefeeds++;
}
else
putc( c, dst );
}
fclose( dst );
fclose( src );
log_info(_("%s: new options file created\n"), fname );
m_free(fname);
}
|
