Move get_ar_headers to libbb, make dpkg_deb.c independent of ar.c

This commit is contained in:
Glenn L McGrath 2001-04-11 01:37:03 +00:00
parent 93ffa950bf
commit 9d53c8ab74
8 changed files with 153 additions and 238 deletions

View File

@ -235,17 +235,18 @@ endif
LIBBB = libbb
LIBBB_LIB = libbb.a
LIBBB_CSRC= ask_confirmation.c check_wildcard_match.c chomp.c copy_file.c \
copy_file_chunk.c create_path.c daemon.c device_open.c error_msg.c \
find_mount_point.c find_pid_by_name.c find_root_device.c full_read.c \
full_write.c get_console.c get_last_path_component.c get_line_from_file.c \
LIBBB_CSRC= ask_confirmation.c check_wildcard_match.c chomp.c \
concat_path_file.c copy_file.c copy_file_chunk.c create_path.c daemon.c \
device_open.c error_msg.c error_msg_and_die.c find_mount_point.c \
find_pid_by_name.c find_root_device.c full_read.c full_write.c \
get_ar_headers.c get_console.c get_last_path_component.c get_line_from_file.c \
human_readable.c inode_hash.c isdirectory.c kernel_version.c loop.c \
mode_string.c parse_mode.c parse_number.c print_file.c process_escape_sequence.c \
my_getgrgid.c my_getpwnamegid.c my_getpwuid.c my_getgrnam.c my_getpwnam.c \
recursive_action.c safe_read.c safe_strncpy.c syscalls.c module_syscalls.c \
syslog_msg_with_name.c time_string.c trim.c vdprintf.c wfopen.c xfuncs.c \
xregcomp.c error_msg_and_die.c perror_msg.c perror_msg_and_die.c \
verror_msg.c vperror_msg.c mtab.c mtab_file.c xgetcwd.c concat_path_file.c
mode_string.c module_syscalls.c mtab.c mtab_file.c my_getgrnam.c \
my_getgrgid.c my_getpwnam.c my_getpwnamegid.c my_getpwuid.c parse_mode.c \
parse_number.c perror_msg.c perror_msg_and_die.c print_file.c \
process_escape_sequence.c recursive_action.c safe_read.c safe_strncpy.c \
syscalls.c syslog_msg_with_name.c time_string.c trim.c vdprintf.c verror_msg.c \
vperror_msg.c wfopen.c xfuncs.c xgetcwd.c xregcomp.c
LIBBB_OBJS=$(patsubst %.c,$(LIBBB)/%.o, $(LIBBB_CSRC))
LIBBB_CFLAGS = -I$(LIBBB)

102
ar.c
View File

@ -23,113 +23,11 @@
*
*/
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <unistd.h>
#include "busybox.h"
typedef struct ar_headers_s {
char *name;
off_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;
/*
* return the headerL_t struct for the filename descriptor
*/
extern ar_headers_t get_ar_headers(int srcFd)
{
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;
ar_headers_t *head, *entry;
char ar_magic[8];
char *long_name=NULL;
head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
/* check ar magic */
if (full_read(srcFd, ar_magic, 8) != 8) {
error_msg_and_die("cannot read magic");
}
if (strncmp(ar_magic,"!<arch>",7) != 0) {
error_msg_and_die("invalid magic");
}
while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) {
/* 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 */
read(srcFd, &newline, 1);
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 */
}
entry->size = (off_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, entry->size);
full_read(srcFd, long_name, entry->size);
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]);
entry->name = xmalloc(strlen(&long_name[long_name_offset]));
strcpy(entry->name, &long_name[long_name_offset]);
}
}
else {
/* short filenames */
entry->name = xmalloc(16);
strncpy(entry->name, raw_ar_header.name, 16);
}
entry->name[strcspn(entry->name, " /")]='\0';
/* convert the rest of the now valid char header to its typed struct */
parse_mode(raw_ar_header.mode, &entry->mode);
entry->mtime = atoi(raw_ar_header.date);
entry->uid = atoi(raw_ar_header.uid);
entry->gid = atoi(raw_ar_header.gid);
entry->offset = lseek(srcFd, 0, SEEK_CUR);
/* add this entries header to our combined list */
entry->next = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
*entry->next = *head;
*head = *entry;
lseek(srcFd, (off_t) entry->size, SEEK_CUR);
}
return(*head);
}
extern int ar_main(int argc, char **argv)
{
const int preserve_date = 1; /* preserve original dates */

View File

@ -23,113 +23,11 @@
*
*/
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <unistd.h>
#include "busybox.h"
typedef struct ar_headers_s {
char *name;
off_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;
/*
* return the headerL_t struct for the filename descriptor
*/
extern ar_headers_t get_ar_headers(int srcFd)
{
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;
ar_headers_t *head, *entry;
char ar_magic[8];
char *long_name=NULL;
head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
/* check ar magic */
if (full_read(srcFd, ar_magic, 8) != 8) {
error_msg_and_die("cannot read magic");
}
if (strncmp(ar_magic,"!<arch>",7) != 0) {
error_msg_and_die("invalid magic");
}
while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) {
/* 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 */
read(srcFd, &newline, 1);
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 */
}
entry->size = (off_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, entry->size);
full_read(srcFd, long_name, entry->size);
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]);
entry->name = xmalloc(strlen(&long_name[long_name_offset]));
strcpy(entry->name, &long_name[long_name_offset]);
}
}
else {
/* short filenames */
entry->name = xmalloc(16);
strncpy(entry->name, raw_ar_header.name, 16);
}
entry->name[strcspn(entry->name, " /")]='\0';
/* convert the rest of the now valid char header to its typed struct */
parse_mode(raw_ar_header.mode, &entry->mode);
entry->mtime = atoi(raw_ar_header.date);
entry->uid = atoi(raw_ar_header.uid);
entry->gid = atoi(raw_ar_header.gid);
entry->offset = lseek(srcFd, 0, SEEK_CUR);
/* add this entries header to our combined list */
entry->next = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
*entry->next = *head;
*head = *entry;
lseek(srcFd, (off_t) entry->size, SEEK_CUR);
}
return(*head);
}
extern int ar_main(int argc, char **argv)
{
const int preserve_date = 1; /* preserve original dates */

View File

@ -31,18 +31,6 @@
extern int gz_open(FILE *compressed_file, int *pid);
extern void gz_close(int gunzip_pid);
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_ar_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);

View File

@ -31,18 +31,6 @@
extern int gz_open(FILE *compressed_file, int *pid);
extern void gz_close(int gunzip_pid);
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_ar_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);

View File

@ -215,4 +215,16 @@ int klogctl(int type, char * b, int len);
char *xgetcwd(char *cwd);
char *concat_path_file(const char *path, const char *filename);
typedef struct ar_headers_s {
char *name;
off_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_ar_headers(int srcFd);
#endif /* __LIBBB_H__ */

118
libbb/get_ar_headers.c Normal file
View File

@ -0,0 +1,118 @@
/* 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"
extern ar_headers_t get_ar_headers(int srcFd)
{
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;
ar_headers_t *head, *entry;
char ar_magic[8];
char *long_name=NULL;
head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
/* check ar magic */
if (full_read(srcFd, ar_magic, 8) != 8) {
error_msg_and_die("cannot read magic");
}
if (strncmp(ar_magic,"!<arch>",7) != 0) {
error_msg_and_die("invalid magic");
}
while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) {
/* 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 */
read(srcFd, &newline, 1);
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 */
}
entry->size = (off_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, entry->size);
full_read(srcFd, long_name, entry->size);
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]);
entry->name = xmalloc(strlen(&long_name[long_name_offset]));
strcpy(entry->name, &long_name[long_name_offset]);
}
}
else {
/* short filenames */
entry->name = xmalloc(16);
strncpy(entry->name, raw_ar_header.name, 16);
}
entry->name[strcspn(entry->name, " /")]='\0';
/* convert the rest of the now valid char header to its typed struct */
parse_mode(raw_ar_header.mode, &entry->mode);
entry->mtime = atoi(raw_ar_header.date);
entry->uid = atoi(raw_ar_header.uid);
entry->gid = atoi(raw_ar_header.gid);
entry->offset = lseek(srcFd, 0, SEEK_CUR);
/* add this entries header to our combined list */
entry->next = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
*entry->next = *head;
*head = *entry;
lseek(srcFd, (off_t) entry->size, SEEK_CUR);
}
return(*head);
}

View File

@ -215,4 +215,16 @@ int klogctl(int type, char * b, int len);
char *xgetcwd(char *cwd);
char *concat_path_file(const char *path, const char *filename);
typedef struct ar_headers_s {
char *name;
off_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_ar_headers(int srcFd);
#endif /* __LIBBB_H__ */