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
|
/*
* 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 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 <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <utime.h>
#include <unistd.h>
#include <stdlib.h>
#include "libbb.h"
#include "unarchive.h"
extern void data_extract_all(archive_handle_t *archive_handle)
{
file_header_t *file_header = archive_handle->file_header;
int dst_fd;
int res;
if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
char *name = bb_xstrdup(file_header->name);
bb_make_directory (dirname(name), 0777, FILEUTILS_RECUR);
free(name);
}
/* Check if the file already exists */
if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
/* Remove the existing entry if it exists */
if ((unlink(file_header->name) == -1) && (errno != ENOENT)) {
bb_perror_msg_and_die("Couldnt remove old file");
}
}
else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) {
/* Remove the existing entry if its older than the extracted entry */
struct stat statbuf;
if ((lstat(file_header->name, &statbuf) == -1) && (errno != ENOENT)) {
bb_perror_msg_and_die("Couldnt stat old file");
}
if (statbuf.st_mtime <= file_header->mtime) {
if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
bb_error_msg("%s not created: newer or same age file exists", file_header->name);
}
data_skip(archive_handle);
return;
}
if ((unlink(file_header->name) == -1) && (errno != ENOENT)) {
bb_perror_msg_and_die("Couldnt remove old file");
}
}
/* Handle hard links seperately */
if (!S_ISLNK(file_header->mode) && (file_header->link_name) && (file_header->size == 0)) {
/* hard link */
res = link(file_header->link_name, file_header->name);
if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
bb_perror_msg("Couldnt create hard link");
}
} else {
/* Create the filesystem entry */
switch(file_header->mode & S_IFMT) {
case S_IFREG: {
/* Regular file */
unlink(file_header->name);
dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL);
archive_copy_file(archive_handle, dst_fd);
close(dst_fd);
break;
}
case S_IFDIR:
unlink(file_header->name);
res = mkdir(file_header->name, file_header->mode);
if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
bb_perror_msg("extract_archive: %s", file_header->name);
}
break;
case S_IFLNK:
/* Symlink */
unlink(file_header->name);
res = symlink(file_header->link_name, file_header->name);
if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
bb_perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name);
}
break;
case S_IFSOCK:
case S_IFBLK:
case S_IFCHR:
case S_IFIFO:
unlink(file_header->name);
res = mknod(file_header->name, file_header->mode, file_header->device);
if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
bb_perror_msg("Cannot create node %s", file_header->name);
}
break;
default:
bb_error_msg_and_die("Unrecognised file type");
}
}
chmod(file_header->name, file_header->mode);
chown(file_header->name, file_header->uid, file_header->gid);
if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
struct utimbuf t;
t.actime = t.modtime = file_header->mtime;
utime(file_header->name, &t);
}
}
|
