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
|
/* plaintext.c - process an plaintext packet
* Copyright (c) 1997 by Werner Koch (dd9jn)
*
* This file is part of G10.
*
* G10 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.
*
* G10 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 "util.h"
#include "memory.h"
#include "options.h"
#include "packet.h"
#include "ttyio.h"
#include "filter.h"
#include "main.h"
/****************
* Handle a plaintext packet. If MFX is not NULL, update the MDs
* Note: we should use the filter stuff here, but we have to add some
* easy mimic to set a read limit, so we calculate only the
* bytes from the plaintext.
*/
int
handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx )
{
char *fname;
FILE *fp = NULL;
int rc = 0;
int c;
int convert = pt->mode == 't';
/* create the filename as C string */
if( opt.outfile ) {
fname = m_alloc( strlen( opt.outfile ) + 1);
strcpy(fname, opt.outfile );
}
else {
fname = m_alloc( pt->namelen +1 );
memcpy( fname, pt->name, pt->namelen );
fname[pt->namelen] = 0;
}
if( !*fname ) { /* no filename given; write to stdout */
fp = stdout;
}
else if( overwrite_filep( fname ) )
goto leave;
if( fp )
;
else if( !(fp = fopen(fname,"wb")) ) {
log_error("Error creating '%s': %s\n", fname, strerror(errno) );
rc = G10ERR_WRITE_FILE;
goto leave;
}
if( pt->len ) {
for( ; pt->len; pt->len-- ) {
if( (c = iobuf_get(pt->buf)) == -1 ) {
log_error("Problem reading source\n");
rc = G10ERR_READ_FILE;
goto leave;
}
if( mfx->md )
md_putc(mfx->md, c );
if( convert && c == '\r' )
continue; /* FIXME: this hack is too simple */
if( putc( c, fp ) == EOF ) {
log_error("Error writing to '%s': %s\n", fname, strerror(errno) );
rc = G10ERR_WRITE_FILE;
goto leave;
}
}
}
else {
while( (c = iobuf_get(pt->buf)) != -1 ) {
if( mfx->md )
md_putc(mfx->md, c );
if( convert && c == '\r' )
continue; /* FIXME: this hack is too simple */
if( putc( c, fp ) == EOF ) {
log_error("Error writing to '%s': %s\n",
fname, strerror(errno) );
rc = G10ERR_WRITE_FILE;
goto leave;
}
}
iobuf_clear_eof(pt->buf);
}
if( fp && fp != stdout && fclose(fp) ) {
log_error("Error closing '%s': %s\n", fname, strerror(errno) );
fp = NULL;
rc = G10ERR_WRITE_FILE;
goto leave;
}
fp = NULL;
leave:
if( fp && fp != stdout )
fclose(fp);
m_free(fname);
return rc;
}
/****************
* Ask for the detached datafile and calculate the digest from it.
* INFILE is the name of the input file.
*/
int
ask_for_detached_datafile( md_filter_context_t *mfx, const char *inname )
{
char *answer = NULL;
IOBUF fp;
int rc = 0;
int c;
fp = open_sigfile( inname ); /* open default file */
if( !fp && !opt.batch ) {
int any=0;
tty_printf("Detached signature.\n");
do {
m_free(answer);
answer = tty_get("Please enter name of data file: ");
tty_kill_prompt();
if( any && !*answer ) {
rc = G10ERR_READ_FILE;
goto leave;
}
fp = iobuf_open(answer);
if( !fp && errno == ENOENT ) {
tty_printf("No such file, try again or hit enter to quit.\n");
any++;
}
else if( !fp ) {
log_error("can't open '%s': %s\n", answer, strerror(errno) );
rc = G10ERR_READ_FILE;
goto leave;
}
} while( !fp );
}
if( !fp ) {
log_info("reading stdin ...\n");
while( (c = getchar()) != EOF ) {
if( mfx->md )
md_putc(mfx->md, c );
}
}
else {
while( (c = iobuf_get(fp)) != -1 ) {
if( mfx->md )
md_putc(mfx->md, c );
}
iobuf_close(fp);
}
leave:
m_free(answer);
return rc;
}
|
