diff options
Diffstat (limited to 'libbb/get_tar_headers.c')
-rw-r--r-- | libbb/get_tar_headers.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/libbb/get_tar_headers.c b/libbb/get_tar_headers.c deleted file mode 100644 index 5ddf4d9c3..000000000 --- a/libbb/get_tar_headers.c +++ /dev/null | |||
@@ -1,111 +0,0 @@ | |||
1 | /* | ||
2 | * This program is free software; you can redistribute it and/or modify | ||
3 | * it under the terms of the GNU General Public License as published by | ||
4 | * the Free Software Foundation; either version 2 of the License, or | ||
5 | * (at your option) any later version. | ||
6 | * | ||
7 | * This program is distributed in the hope that it will be useful, | ||
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
10 | * GNU Library General Public License for more details. | ||
11 | * | ||
12 | * You should have received a copy of the GNU General Public License | ||
13 | * along with this program; if not, write to the Free Software | ||
14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
15 | */ | ||
16 | #include <stdlib.h> | ||
17 | #include <string.h> | ||
18 | #include <unistd.h> | ||
19 | #include "libbb.h" | ||
20 | |||
21 | file_headers_t *get_tar_headers(FILE *tar_stream) | ||
22 | { | ||
23 | typedef struct raw_tar_header { | ||
24 | char name[100]; /* 0-99 */ | ||
25 | char mode[8]; /* 100-107 */ | ||
26 | char uid[8]; /* 108-115 */ | ||
27 | char gid[8]; /* 116-123 */ | ||
28 | char size[12]; /* 124-135 */ | ||
29 | char mtime[12]; /* 136-147 */ | ||
30 | char chksum[8]; /* 148-155 */ | ||
31 | char typeflag; /* 156-156 */ | ||
32 | char linkname[100]; /* 157-256 */ | ||
33 | char magic[6]; /* 257-262 */ | ||
34 | char version[2]; /* 263-264 */ | ||
35 | char uname[32]; /* 265-296 */ | ||
36 | char gname[32]; /* 297-328 */ | ||
37 | char devmajor[8]; /* 329-336 */ | ||
38 | char devminor[8]; /* 337-344 */ | ||
39 | char prefix[155]; /* 345-499 */ | ||
40 | char padding[12]; /* 500-512 */ | ||
41 | } raw_tar_header_t; | ||
42 | |||
43 | raw_tar_header_t raw_tar_header; | ||
44 | unsigned char *temp = (unsigned char *) &raw_tar_header; | ||
45 | file_headers_t *tar_headers_list = (file_headers_t *) calloc(1, sizeof(file_headers_t)); | ||
46 | file_headers_t *tar_entry; | ||
47 | long i; | ||
48 | long next_header_offset = 0; | ||
49 | long current_offset = 0; | ||
50 | |||
51 | while (fread((char *) &raw_tar_header, 1, 512, tar_stream) == 512) { | ||
52 | long sum = 0; | ||
53 | current_offset += 512; | ||
54 | |||
55 | /* Check header has valid magic, unfortunately some tar files | ||
56 | * have empty (0'ed) tar entries at the end, which will | ||
57 | * cause this to fail, so fail silently for now | ||
58 | */ | ||
59 | if (strncmp(raw_tar_header.magic, "ustar", 5) != 0) { | ||
60 | // error_msg("invalid magic, [%s]\n", raw_tar_header.magic); | ||
61 | break; | ||
62 | } | ||
63 | |||
64 | /* Do checksum on headers */ | ||
65 | for (i = 0; i < 148 ; i++) { | ||
66 | sum += temp[i]; | ||
67 | } | ||
68 | sum += ' ' * 8; | ||
69 | for (i = 156; i < 512 ; i++) { | ||
70 | sum += temp[i]; | ||
71 | } | ||
72 | if (sum != strtol(raw_tar_header.chksum, NULL, 8)) { | ||
73 | error_msg("Invalid tar header checksum"); | ||
74 | break; | ||
75 | } | ||
76 | |||
77 | /* convert to type'ed variables */ | ||
78 | tar_entry = xcalloc(1, sizeof(file_headers_t)); | ||
79 | tar_entry->name = xstrdup(raw_tar_header.name); | ||
80 | |||
81 | tar_entry->offset = (off_t) current_offset; | ||
82 | parse_mode(raw_tar_header.mode, &tar_entry->mode); | ||
83 | tar_entry->uid = strtol(raw_tar_header.uid, NULL, 8); | ||
84 | tar_entry->gid = strtol(raw_tar_header.gid, NULL, 8); | ||
85 | tar_entry->size = strtol(raw_tar_header.size, NULL, 8); | ||
86 | tar_entry->mtime = strtol(raw_tar_header.mtime, NULL, 8); | ||
87 | tar_entry->link_name = xstrdup(raw_tar_header.linkname); | ||
88 | // tar_entry->devmajor = strtol(rawHeader->devmajor, NULL, 8); | ||
89 | // tar_entry->devminor = strtol(rawHeader->devminor, NULL, 8); | ||
90 | |||
91 | tar_headers_list = append_archive_list(tar_headers_list, tar_entry); | ||
92 | |||
93 | /* start of next header is at */ | ||
94 | next_header_offset = current_offset + tar_entry->size; | ||
95 | |||
96 | if (tar_entry->size % 512 != 0) { | ||
97 | next_header_offset += (512 - tar_entry->size % 512); | ||
98 | } | ||
99 | /* | ||
100 | * Seek to start of next block, cant use fseek as unzip() does support it | ||
101 | */ | ||
102 | while (current_offset < next_header_offset) { | ||
103 | if (fgetc(tar_stream) == EOF) { | ||
104 | break; | ||
105 | } | ||
106 | current_offset++; | ||
107 | } | ||
108 | } | ||
109 | return(tar_headers_list); | ||
110 | } | ||
111 | |||