Move get_ar_headers to libbb, make dpkg_deb.c independent of ar.c
This commit is contained in:
Glenn L McGrath
parent
93ffa950bf
commit
9d53c8ab74
21
Makefile
21
Makefile
@ -235,17 +235,18 @@ endif
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LIBBB = libbb
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LIBBB_LIB = libbb.a
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LIBBB_CSRC= ask_confirmation.c check_wildcard_match.c chomp.c copy_file.c \
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copy_file_chunk.c create_path.c daemon.c device_open.c error_msg.c \
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find_mount_point.c find_pid_by_name.c find_root_device.c full_read.c \
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full_write.c get_console.c get_last_path_component.c get_line_from_file.c \
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LIBBB_CSRC= ask_confirmation.c check_wildcard_match.c chomp.c \
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concat_path_file.c copy_file.c copy_file_chunk.c create_path.c daemon.c \
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device_open.c error_msg.c error_msg_and_die.c find_mount_point.c \
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find_pid_by_name.c find_root_device.c full_read.c full_write.c \
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get_ar_headers.c get_console.c get_last_path_component.c get_line_from_file.c \
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human_readable.c inode_hash.c isdirectory.c kernel_version.c loop.c \
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mode_string.c parse_mode.c parse_number.c print_file.c process_escape_sequence.c \
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my_getgrgid.c my_getpwnamegid.c my_getpwuid.c my_getgrnam.c my_getpwnam.c \
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recursive_action.c safe_read.c safe_strncpy.c syscalls.c module_syscalls.c \
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syslog_msg_with_name.c time_string.c trim.c vdprintf.c wfopen.c xfuncs.c \
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xregcomp.c error_msg_and_die.c perror_msg.c perror_msg_and_die.c \
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verror_msg.c vperror_msg.c mtab.c mtab_file.c xgetcwd.c concat_path_file.c
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mode_string.c module_syscalls.c mtab.c mtab_file.c my_getgrnam.c \
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my_getgrgid.c my_getpwnam.c my_getpwnamegid.c my_getpwuid.c parse_mode.c \
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parse_number.c perror_msg.c perror_msg_and_die.c print_file.c \
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process_escape_sequence.c recursive_action.c safe_read.c safe_strncpy.c \
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syscalls.c syslog_msg_with_name.c time_string.c trim.c vdprintf.c verror_msg.c \
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vperror_msg.c wfopen.c xfuncs.c xgetcwd.c xregcomp.c
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LIBBB_OBJS=$(patsubst %.c,$(LIBBB)/%.o, $(LIBBB_CSRC))
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LIBBB_CFLAGS = -I$(LIBBB)
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102
ar.c
102
ar.c
@ -23,113 +23,11 @@
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*
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*/
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <unistd.h>
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#include "busybox.h"
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typedef struct ar_headers_s {
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char *name;
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off_t size;
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uid_t uid;
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gid_t gid;
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mode_t mode;
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time_t mtime;
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off_t offset;
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struct ar_headers_s *next;
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} ar_headers_t;
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/*
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* return the headerL_t struct for the filename descriptor
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*/
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extern ar_headers_t get_ar_headers(int srcFd)
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{
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typedef struct raw_ar_header_s { /* Byte Offset */
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char name[16]; /* 0-15 */
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char date[12]; /* 16-27 */
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char uid[6];
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char gid[6]; /* 28-39 */
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char mode[8]; /* 40-47 */
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char size[10]; /* 48-57 */
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char fmag[2]; /* 58-59 */
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} raw_ar_header_t;
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raw_ar_header_t raw_ar_header;
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ar_headers_t *head, *entry;
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char ar_magic[8];
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char *long_name=NULL;
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head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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/* check ar magic */
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if (full_read(srcFd, ar_magic, 8) != 8) {
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error_msg_and_die("cannot read magic");
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}
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if (strncmp(ar_magic,"!<arch>",7) != 0) {
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error_msg_and_die("invalid magic");
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}
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while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) {
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/* check the end of header markers are valid */
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if ((raw_ar_header.fmag[0]!='`') || (raw_ar_header.fmag[1]!='\n')) {
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char newline;
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if (raw_ar_header.fmag[1]!='`') {
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break;
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}
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/* some version of ar, have an extra '\n' after each entry */
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read(srcFd, &newline, 1);
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if (newline!='\n') {
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break;
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}
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/* fix up the header, we started reading 1 byte too early due to a '\n' */
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memmove((char *) &raw_ar_header, (char *)&raw_ar_header+1, 59);
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/* dont worry about adding the last '\n', we dont need it now */
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}
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entry->size = (off_t) atoi(raw_ar_header.size);
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/* long filenames have '/' as the first character */
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if (raw_ar_header.name[0] == '/') {
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if (raw_ar_header.name[1] == '/') {
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/* multiple long filenames are stored as data in one entry */
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long_name = (char *) xrealloc(long_name, entry->size);
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full_read(srcFd, long_name, entry->size);
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continue;
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}
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else {
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/* The number after the '/' indicates the offset in the ar data section
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(saved in variable long_name) that conatains the real filename */
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const int long_name_offset = (int) atoi((char *) &raw_ar_header.name[1]);
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entry->name = xmalloc(strlen(&long_name[long_name_offset]));
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strcpy(entry->name, &long_name[long_name_offset]);
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}
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}
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else {
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/* short filenames */
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entry->name = xmalloc(16);
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strncpy(entry->name, raw_ar_header.name, 16);
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}
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entry->name[strcspn(entry->name, " /")]='\0';
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/* convert the rest of the now valid char header to its typed struct */
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parse_mode(raw_ar_header.mode, &entry->mode);
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entry->mtime = atoi(raw_ar_header.date);
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entry->uid = atoi(raw_ar_header.uid);
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entry->gid = atoi(raw_ar_header.gid);
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entry->offset = lseek(srcFd, 0, SEEK_CUR);
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/* add this entries header to our combined list */
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entry->next = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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*entry->next = *head;
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*head = *entry;
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lseek(srcFd, (off_t) entry->size, SEEK_CUR);
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}
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return(*head);
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}
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extern int ar_main(int argc, char **argv)
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{
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const int preserve_date = 1; /* preserve original dates */
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102
archival/ar.c
102
archival/ar.c
@ -23,113 +23,11 @@
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*
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*/
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <unistd.h>
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#include "busybox.h"
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typedef struct ar_headers_s {
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char *name;
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off_t size;
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uid_t uid;
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gid_t gid;
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mode_t mode;
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time_t mtime;
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off_t offset;
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struct ar_headers_s *next;
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} ar_headers_t;
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/*
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* return the headerL_t struct for the filename descriptor
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*/
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extern ar_headers_t get_ar_headers(int srcFd)
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{
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typedef struct raw_ar_header_s { /* Byte Offset */
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char name[16]; /* 0-15 */
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char date[12]; /* 16-27 */
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char uid[6];
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char gid[6]; /* 28-39 */
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char mode[8]; /* 40-47 */
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char size[10]; /* 48-57 */
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char fmag[2]; /* 58-59 */
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} raw_ar_header_t;
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raw_ar_header_t raw_ar_header;
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ar_headers_t *head, *entry;
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char ar_magic[8];
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char *long_name=NULL;
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head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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/* check ar magic */
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if (full_read(srcFd, ar_magic, 8) != 8) {
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error_msg_and_die("cannot read magic");
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}
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if (strncmp(ar_magic,"!<arch>",7) != 0) {
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error_msg_and_die("invalid magic");
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}
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while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) {
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/* check the end of header markers are valid */
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if ((raw_ar_header.fmag[0]!='`') || (raw_ar_header.fmag[1]!='\n')) {
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char newline;
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if (raw_ar_header.fmag[1]!='`') {
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break;
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}
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/* some version of ar, have an extra '\n' after each entry */
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read(srcFd, &newline, 1);
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if (newline!='\n') {
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break;
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}
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/* fix up the header, we started reading 1 byte too early due to a '\n' */
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memmove((char *) &raw_ar_header, (char *)&raw_ar_header+1, 59);
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/* dont worry about adding the last '\n', we dont need it now */
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}
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entry->size = (off_t) atoi(raw_ar_header.size);
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/* long filenames have '/' as the first character */
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if (raw_ar_header.name[0] == '/') {
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if (raw_ar_header.name[1] == '/') {
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/* multiple long filenames are stored as data in one entry */
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long_name = (char *) xrealloc(long_name, entry->size);
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full_read(srcFd, long_name, entry->size);
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continue;
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}
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else {
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/* The number after the '/' indicates the offset in the ar data section
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(saved in variable long_name) that conatains the real filename */
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const int long_name_offset = (int) atoi((char *) &raw_ar_header.name[1]);
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entry->name = xmalloc(strlen(&long_name[long_name_offset]));
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strcpy(entry->name, &long_name[long_name_offset]);
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}
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}
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else {
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/* short filenames */
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entry->name = xmalloc(16);
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strncpy(entry->name, raw_ar_header.name, 16);
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}
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entry->name[strcspn(entry->name, " /")]='\0';
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/* convert the rest of the now valid char header to its typed struct */
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parse_mode(raw_ar_header.mode, &entry->mode);
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entry->mtime = atoi(raw_ar_header.date);
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entry->uid = atoi(raw_ar_header.uid);
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entry->gid = atoi(raw_ar_header.gid);
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entry->offset = lseek(srcFd, 0, SEEK_CUR);
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/* add this entries header to our combined list */
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entry->next = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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*entry->next = *head;
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*head = *entry;
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lseek(srcFd, (off_t) entry->size, SEEK_CUR);
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}
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return(*head);
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}
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extern int ar_main(int argc, char **argv)
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{
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const int preserve_date = 1; /* preserve original dates */
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@ -31,18 +31,6 @@
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extern int gz_open(FILE *compressed_file, int *pid);
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extern void gz_close(int gunzip_pid);
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typedef struct ar_headers_s {
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char *name;
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size_t size;
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uid_t uid;
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gid_t gid;
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mode_t mode;
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time_t mtime;
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off_t offset;
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struct ar_headers_s *next;
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} ar_headers_t;
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extern ar_headers_t get_ar_headers(int srcFd);
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extern int tar_unzip_init(int tarFd);
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extern int readTarFile(int tarFd, int extractFlag, int listFlag,
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int tostdoutFlag, int verboseFlag, char** extractList, char** excludeList);
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12
dpkg_deb.c
12
dpkg_deb.c
@ -31,18 +31,6 @@
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extern int gz_open(FILE *compressed_file, int *pid);
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extern void gz_close(int gunzip_pid);
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typedef struct ar_headers_s {
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char *name;
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size_t size;
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uid_t uid;
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gid_t gid;
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mode_t mode;
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time_t mtime;
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off_t offset;
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struct ar_headers_s *next;
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} ar_headers_t;
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extern ar_headers_t get_ar_headers(int srcFd);
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extern int tar_unzip_init(int tarFd);
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extern int readTarFile(int tarFd, int extractFlag, int listFlag,
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int tostdoutFlag, int verboseFlag, char** extractList, char** excludeList);
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@ -215,4 +215,16 @@ int klogctl(int type, char * b, int len);
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char *xgetcwd(char *cwd);
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char *concat_path_file(const char *path, const char *filename);
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typedef struct ar_headers_s {
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char *name;
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off_t size;
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uid_t uid;
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gid_t gid;
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mode_t mode;
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time_t mtime;
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off_t offset;
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struct ar_headers_s *next;
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} ar_headers_t;
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extern ar_headers_t get_ar_headers(int srcFd);
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#endif /* __LIBBB_H__ */
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118
libbb/get_ar_headers.c
Normal file
118
libbb/get_ar_headers.c
Normal file
@ -0,0 +1,118 @@
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/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) tons of folks. Tracking down who wrote what
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* isn't something I'm going to worry about... If you wrote something
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* here, please feel free to acknowledge your work.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "libbb.h"
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extern ar_headers_t get_ar_headers(int srcFd)
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{
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typedef struct raw_ar_header_s { /* Byte Offset */
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char name[16]; /* 0-15 */
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char date[12]; /* 16-27 */
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char uid[6];
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char gid[6]; /* 28-39 */
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char mode[8]; /* 40-47 */
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char size[10]; /* 48-57 */
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char fmag[2]; /* 58-59 */
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} raw_ar_header_t;
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raw_ar_header_t raw_ar_header;
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ar_headers_t *head, *entry;
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char ar_magic[8];
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char *long_name=NULL;
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head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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/* check ar magic */
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if (full_read(srcFd, ar_magic, 8) != 8) {
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error_msg_and_die("cannot read magic");
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}
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if (strncmp(ar_magic,"!<arch>",7) != 0) {
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error_msg_and_die("invalid magic");
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}
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while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) {
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/* check the end of header markers are valid */
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if ((raw_ar_header.fmag[0]!='`') || (raw_ar_header.fmag[1]!='\n')) {
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char newline;
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if (raw_ar_header.fmag[1]!='`') {
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break;
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}
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/* some version of ar, have an extra '\n' after each entry */
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read(srcFd, &newline, 1);
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if (newline!='\n') {
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break;
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}
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/* fix up the header, we started reading 1 byte too early due to a '\n' */
|
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memmove((char *) &raw_ar_header, (char *)&raw_ar_header+1, 59);
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/* dont worry about adding the last '\n', we dont need it now */
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}
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entry->size = (off_t) atoi(raw_ar_header.size);
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/* long filenames have '/' as the first character */
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if (raw_ar_header.name[0] == '/') {
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if (raw_ar_header.name[1] == '/') {
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/* multiple long filenames are stored as data in one entry */
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long_name = (char *) xrealloc(long_name, entry->size);
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full_read(srcFd, long_name, entry->size);
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continue;
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}
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else {
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/* The number after the '/' indicates the offset in the ar data section
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(saved in variable long_name) that conatains the real filename */
|
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const int long_name_offset = (int) atoi((char *) &raw_ar_header.name[1]);
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entry->name = xmalloc(strlen(&long_name[long_name_offset]));
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strcpy(entry->name, &long_name[long_name_offset]);
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}
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}
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else {
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/* short filenames */
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entry->name = xmalloc(16);
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strncpy(entry->name, raw_ar_header.name, 16);
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}
|
||||
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);
|
||||
}
|
||||
@ -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__ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user