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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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107
include/unarchive.h
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@ -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