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
|
/* vi: set sw=4 ts=4: */
/*
* Modified for busybox by Glenn McGrath <bug1@iinet.net.au>
* Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "busybox.h"
#include "unarchive.h"
#define BUNZIP2_OPT_STDOUT 1
#define BUNZIP2_OPT_FORCE 2
int bunzip2_main(int argc, char **argv)
{
USE_DESKTOP(long long) int status;
char *filename;
unsigned opt;
int src_fd, dst_fd;
opt = getopt32(argc, argv, "cf");
/* Set input filename and number */
filename = argv[optind];
if (filename && NOT_LONE_DASH(filename)) {
/* Open input file */
src_fd = xopen(filename, O_RDONLY);
} else {
src_fd = STDIN_FILENO;
filename = 0;
}
/* if called as bzcat force the stdout flag */
if ((opt & BUNZIP2_OPT_STDOUT) || applet_name[2] == 'c')
filename = 0;
/* Check that the input is sane. */
if (isatty(src_fd) && (opt & BUNZIP2_OPT_FORCE) == 0) {
bb_error_msg_and_die("compressed data not read from terminal, "
"use -f to force it");
}
if (filename) {
struct stat stat_buf;
/* extension = filename+strlen(filename)-4 is buggy:
* strlen may be less than 4 */
char *extension = strrchr(filename, '.');
if (!extension || strcmp(extension, ".bz2") != 0) {
bb_error_msg_and_die("invalid extension");
}
xstat(filename, &stat_buf);
*extension = '\0';
dst_fd = xopen3(filename, O_WRONLY | O_CREAT | O_TRUNC,
stat_buf.st_mode);
} else dst_fd = STDOUT_FILENO;
status = uncompressStream(src_fd, dst_fd);
if (filename) {
if (status >= 0) filename[strlen(filename)] = '.';
if (unlink(filename) < 0) {
bb_error_msg_and_die("cannot remove %s", filename);
}
}
return status;
}
|
