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
|
/*
* This program 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.
*
* This program 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 Library 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 <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include "busybox.h"
typedef struct ar_headers_s {
char *name;
size_t size;
uid_t uid;
gid_t gid;
mode_t mode;
time_t mtime;
off_t offset;
struct ar_headers_s *next;
} ar_headers_t;
extern ar_headers_t get_headers(int srcFd);
extern int tar_unzip_init(int tarFd);
extern int readTarFile(int tarFd, int extractFlag, int listFlag,
int tostdoutFlag, int verboseFlag, char** extractList,
char** excludeList);
extern int dpkg_deb_main(int argc, char **argv)
{
const int dpkg_deb_contents = 1;
const int dpkg_deb_control = 2;
// const int dpkg_deb_info = 4;
const int dpkg_deb_extract = 8;
const int dpkg_deb_verbose_extract = 16;
int opt=0;
int optflag=0;
int extract_flag = FALSE;
int list_flag = FALSE;
int verbose_flag = FALSE;
int extract_to_stdout = FALSE;
char ar_filename[15];
int srcFd=0;
int status=0;
ar_headers_t *ar_headers = NULL;
char **extract_list=NULL;
char *target_dir=NULL;
while ((opt = getopt(argc, argv, "cexX")) != -1) {
switch (opt) {
case 'c':
optflag |= dpkg_deb_contents;
break;
case 'e':
optflag |= dpkg_deb_control;
break;
/* case 'I':
optflag |= dpkg_deb_info;
break;
*/
case 'x':
optflag |= dpkg_deb_extract;
break;
case 'X':
optflag |= dpkg_deb_verbose_extract;
break;
default:
usage(dpkg_deb_usage);
return EXIT_FAILURE;
}
}
if (((optind + 1 ) > argc) || (optflag == 0)) {
usage(dpkg_deb_usage);
return(EXIT_FAILURE);
}
if (optflag & dpkg_deb_contents) {
list_flag = TRUE;
verbose_flag = TRUE;
strcpy(ar_filename, "data.tar.gz");
}
else if (optflag & dpkg_deb_control) {
extract_flag = TRUE;
strcpy(ar_filename, "control.tar.gz");
if ( (optind + 1) == argc ) {
target_dir = (char *) xmalloc(7);
strcpy(target_dir, "DEBIAN");
}
else {
target_dir = (char *) xmalloc(strlen(argv[optind+1]));
strcpy(target_dir, argv[optind+1]);
}
}
/* else if (optflag & dpkg_deb_info) {
extract_flag = TRUE;
extract_to_stdout = TRUE;
strcpy(ar_filename, "control.tar.gz");
extract_list = argv+optind+1;
printf("list one is [%s]\n",extract_list[0]);
}
*/
else if (optflag & dpkg_deb_extract) {
extract_flag = TRUE;
strcpy(ar_filename, "data.tar.gz");
if ( (optind + 2) > argc ) {
error_msg_and_die("No directory specified\n");
}
target_dir = (char *) xmalloc(strlen(argv[optind+1]));
strcpy(target_dir, argv[optind+1]);
}
else if (optflag & dpkg_deb_verbose_extract) {
extract_flag = TRUE;
list_flag = TRUE;
strcpy(ar_filename, "data.tar.gz");
if ( (optind + 2) > argc ) {
error_msg_and_die("No directory specified\n");
}
target_dir = (char *) xmalloc(strlen(argv[optind+1]));
strcpy(target_dir, argv[optind+1]);
}
ar_headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
srcFd = open(argv[optind], O_RDONLY);
*ar_headers = get_headers(srcFd);
if (ar_headers->next==NULL)
error_msg_and_die("Couldnt find %s in %s\n",ar_filename, argv[optind]);
while (ar_headers->next != NULL) {
if (strcmp(ar_headers->name, ar_filename)==0)
break;
ar_headers = ar_headers->next;
}
lseek(srcFd, ar_headers->offset, SEEK_SET);
srcFd = tar_unzip_init(srcFd);
if ( target_dir != NULL) {
if (is_directory(target_dir, TRUE, NULL)==FALSE) {
mkdir(target_dir, 0755);
}
if (chdir(target_dir)==-1) {
error_msg_and_die("Cannot change to dir %s\n",argv[optind+1]);
}
}
status = readTarFile(srcFd, extract_flag, list_flag, extract_to_stdout, verbose_flag, NULL, extract_list);
return(EXIT_SUCCESS);
}
|
