summaryrefslogtreecommitdiff
path: root/libbb/get_ar_headers.c
diff options
context:
space:
mode:
Diffstat (limited to 'libbb/get_ar_headers.c')
-rw-r--r--libbb/get_ar_headers.c119
1 files changed, 0 insertions, 119 deletions
diff --git a/libbb/get_ar_headers.c b/libbb/get_ar_headers.c
deleted file mode 100644
index 414498b..0000000
--- a/libbb/get_ar_headers.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Utility routines.
- *
- * Copyright (C) tons of folks. Tracking down who wrote what
- * isn't something I'm going to worry about... If you wrote something
- * here, please feel free to acknowledge your work.
- *
- * 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
- *
- * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
- * Permission has been granted to redistribute this code under the GPL.
- *
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "libbb.h"
-
-file_headers_t *get_ar_headers(FILE *in_file)
-{
- typedef struct raw_ar_header_s { /* Byte Offset */
- char name[16]; /* 0-15 */
- char date[12]; /* 16-27 */
- char uid[6];
- char gid[6]; /* 28-39 */
- char mode[8]; /* 40-47 */
- char size[10]; /* 48-57 */
- char fmag[2]; /* 58-59 */
- } raw_ar_header_t;
-
- raw_ar_header_t raw_ar_header;
-
- file_headers_t *ar_list, *ar_entry;
- char ar_magic[8];
- char *long_name=NULL;
-
- /* check ar magic */
- if (fread(ar_magic, 1, 8, in_file) != 8) {
- error_msg("cannot read magic");
- return(NULL);
- }
-
- if (strncmp(ar_magic,"!<arch>",7) != 0) {
- error_msg("invalid magic");
- return(NULL);
- }
-
- ar_list = (file_headers_t *) xcalloc(1, sizeof(file_headers_t));
-
- while (fread((char *) &raw_ar_header, 1, 60, in_file) == 60) {
- ar_entry = (file_headers_t *) xcalloc(1, sizeof(file_headers_t));
- /* check the end of header markers are valid */
- if ((raw_ar_header.fmag[0] != '`') || (raw_ar_header.fmag[1] != '\n')) {
- char newline;
- if (raw_ar_header.fmag[1] != '`') {
- break;
- }
- /* some version of ar, have an extra '\n' after each entry */
- fread(&newline, 1, 1, in_file);
- if (newline!='\n') {
- break;
- }
- /* fix up the header, we started reading 1 byte too early due to a '\n' */
- memmove((char *) &raw_ar_header, (char *)&raw_ar_header+1, 59);
- /* dont worry about adding the last '\n', we dont need it now */
- }
-
- ar_entry->size = (size_t) atoi(raw_ar_header.size);
- /* long filenames have '/' as the first character */
- if (raw_ar_header.name[0] == '/') {
- if (raw_ar_header.name[1] == '/') {
- /* multiple long filenames are stored as data in one entry */
- long_name = (char *) xrealloc(long_name, ar_entry->size);
- fread(long_name, 1, ar_entry->size, in_file);
- continue;
- }
- else {
- /* The number after the '/' indicates the offset in the ar data section
- (saved in variable long_name) that conatains the real filename */
- const int long_name_offset = (int) atoi((char *) &raw_ar_header.name[1]);
- ar_entry->name = xmalloc(strlen(&long_name[long_name_offset]));
- strcpy(ar_entry->name, &long_name[long_name_offset]);
- }
- }
- else {
- /* short filenames */
- ar_entry->name = xmalloc(16);
- ar_entry->name = strncpy(ar_entry->name, raw_ar_header.name, 16);
- }
- ar_entry->name[strcspn(ar_entry->name, " /")]='\0';
-
- /* convert the rest of the now valid char header to its typed struct */
- parse_mode(raw_ar_header.mode, &ar_entry->mode);
- ar_entry->mtime = atoi(raw_ar_header.date);
- ar_entry->uid = atoi(raw_ar_header.uid);
- ar_entry->gid = atoi(raw_ar_header.gid);
- ar_entry->offset = ftell(in_file);
- ar_entry->next = NULL;
-
- fseek(in_file, (off_t) ar_entry->size, SEEK_CUR);
-
- ar_list = append_archive_list(ar_list, ar_entry);
- }
- return(ar_list);
-}