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New common unarchive code.

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This commit is contained in:
Glenn L McGrath
2002-09-25 02:47:48 +00:00
parent ecfa290cfd
commit 7ca04f328e
36 changed files with 2436 additions and 1914 deletions
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21
include/libbb.h
View File

@@ -48,10 +48,6 @@
# include "sha1.h"
#endif
/* Compatability with ANSI C */
#ifndef inline
# define inline
#endif
#if (__GNU_LIBRARY__ < 5) && (!defined __dietlibc__)
/* libc5 doesn't define socklen_t */
@@ -74,6 +70,9 @@ char *strtok_r(char *s, const char *delim, char **ptrptr);
#define BUF_SIZE 8192
#define EXPAND_ALLOC 1024
static inline int is_decimal(int ch) { return ((ch >= '0') && (ch <= '9')); }
static inline int is_octal(int ch) { return ((ch >= '0') && (ch <= '7')); }
/* Macros for min/max. */
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
@@ -83,8 +82,6 @@ char *strtok_r(char *s, const char *delim, char **ptrptr);
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif
extern void show_usage(void) __attribute__ ((noreturn));
extern void error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
@@ -228,10 +225,7 @@ extern long arith (const char *startbuf, int *errcode);
int read_package_field(const char *package_buffer, char **field_name, char **field_value);
char *fgets_str(FILE *file, const char *terminating_string);
extern int inflate(FILE *in, FILE *out);
extern int unzip(FILE *l_in_file, FILE *l_out_file);
extern void gz_close(int gunzip_pid);
extern FILE *gz_open(FILE *compressed_file, int *pid);
extern int inflate(int in, int out);
extern struct hostent *xgethostbyname(const char *name);
extern struct hostent *xgethostbyname2(const char *name, int af);
@@ -335,4 +329,11 @@ extern char *pw_encrypt(const char *clear, const char *salt);
extern struct spwd *pwd_to_spwd(const struct passwd *pw);
extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
//extern int xopen(const char *pathname, int flags, mode_t mode);
extern int xopen(const char *pathname, int flags);
extern ssize_t xread(int fd, void *buf, size_t count);
extern ssize_t xread_all_eof(int fd, void *buf, size_t count);
extern void xread_all(int fd, void *buf, size_t count);
extern unsigned char xread_char(int fd);
#endif /* __LIBCONFIG_H__ */

107
include/unarchive.h
View File

@@ -1,21 +1,19 @@
#include <stdio.h> /* for FILE */
#include <unistd.h> /* for off_t */
#ifndef __UNARCHIVE_H__
#define __UNARCHIVE_H__
enum extract_functions_e {
extract_verbose_list = 1,
extract_list = 2,
extract_one_to_buffer = 4,
extract_to_stdout = 8,
extract_all_to_fs = 16,
extract_preserve_date = 32,
extract_data_tar_gz = 64,
extract_control_tar_gz = 128,
extract_unzip_only = 256,
extract_unconditional = 512,
extract_create_leading_dirs = 1024,
extract_quiet = 2048,
extract_exclude_list = 4096
};
#define ARCHIVE_PRESERVE_DATE 1
#define ARCHIVE_CREATE_LEADING_DIRS 2
#define ARCHIVE_EXTRACT_UNCONDITIONAL 4
#define ARCHIVE_EXTRACT_QUIET 8
#include <sys/types.h>
typedef struct gunzip_s {
unsigned short buffer_count;
unsigned char *buffer;
unsigned int crc;
unsigned int count;
} gunzip_t;
typedef struct file_headers_s {
char *name;
@@ -26,23 +24,70 @@ typedef struct file_headers_s {
mode_t mode;
time_t mtime;
dev_t device;
int (*extract_func) (FILE *, FILE *);
} file_header_t;
file_header_t *get_header_ar(FILE * in_file);
file_header_t *get_header_cpio(FILE * src_stream);
file_header_t *get_header_tar(FILE * tar_stream);
file_header_t *get_header_zip(FILE * zip_stream);
typedef struct llist_s {
const char *data;
const struct llist_s *link;
} llist_t;
void seek_sub_file(FILE * src_stream, const int count);
typedef struct archive_handle_s {
/* define if the header and data compenent should processed */
char (*filter)(const llist_t *, const llist_t *, const char *);
const llist_t *accept;
const llist_t *reject;
extern off_t archive_offset;
/* Contains the processed header entry */
file_header_t *file_header;
char *unarchive(FILE * src_stream, FILE * out_stream,
file_header_t * (*get_headers) (FILE *),
const int extract_function, const char *prefix,
char **include_name, char **exclude_name);
/* process the header component, e.g. tar -t */
void (*action_header)(const file_header_t *);
char *deb_extract(const char *package_filename, FILE * out_stream,
const int extract_function, const char *prefix,
const char *filename);
/* process the data componenet, e.g. extract to filesystem */
void (*action_data)(struct archive_handle_s *);
char (*action_data_subarchive)(struct archive_handle_s *);
/* Contains the handle to a sub archive */
struct archive_handle_s *sub_archive;
/* The raw stream as read from disk or stdin */
int src_fd;
/* Count the number of bytes processed */
off_t offset;
/* Misc. stuff */
unsigned char flags;
} archive_handle_t;
extern archive_handle_t *init_handle(void);
extern char filter_accept_all(const llist_t *accept_list, const llist_t *reject_list, const char *key);
extern char filter_accept_list(const llist_t *accept_list, const llist_t *reject_list, const char *key);
extern char filter_accept_reject_list(const llist_t *accept_list, const llist_t *reject_list, const char *key);
extern void unpack_ar_archive(archive_handle_t *ar_archive);
extern void data_gunzip(archive_handle_t *archive_handle);
extern void data_skip(archive_handle_t *archive_handle);
extern void data_extract_all(archive_handle_t *archive_handle);
extern void data_extract_to_stdout(archive_handle_t *archive_handle);
extern void header_skip(const file_header_t *file_header);
extern void header_list(const file_header_t *file_header);
extern void header_verbose_list(const file_header_t *file_header);
extern void check_header_gzip(int src_fd);
extern void check_trailer_gzip(int src_fd);
extern char get_header_ar(archive_handle_t *archive_handle);
extern char get_header_tar(archive_handle_t *archive_handle);
extern char get_header_tar_gz(archive_handle_t *archive_handle);
//extern void seek_sub_file(int src_fd, unsigned int amount);
extern const unsigned short data_align(const int src_fd, const unsigned int offset, const unsigned short align_to);
extern const llist_t *add_to_list(const llist_t *old_head, const char *new_item);
extern int copy_file_chunk_fd(int src_fd, int dst_fd, unsigned long long chunksize);
#endif