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/* vi: set sw=4 ts=4: */
#ifndef __UNARCHIVE_H__
#define __UNARCHIVE_H__
#define ARCHIVE_PRESERVE_DATE 1
#define ARCHIVE_CREATE_LEADING_DIRS 2
#define ARCHIVE_EXTRACT_UNCONDITIONAL 4
#define ARCHIVE_EXTRACT_QUIET 8
#define ARCHIVE_EXTRACT_NEWER 16
#define ARCHIVE_NOPRESERVE_OWN 32
#define ARCHIVE_NOPRESERVE_PERM 64
typedef struct file_header_t {
char *name;
char *link_target;
off_t size;
uid_t uid;
gid_t gid;
mode_t mode;
time_t mtime;
dev_t device;
} file_header_t;
typedef struct archive_handle_t {
/* define if the header and data component should be processed */
char (*filter)(struct archive_handle_t *);
llist_t *accept;
/* List of files that have been rejected */
llist_t *reject;
/* List of files that have successfully been worked on */
llist_t *passed;
/* Contains the processed header entry */
file_header_t *file_header;
/* process the header component, e.g. tar -t */
void (*action_header)(const file_header_t *);
/* process the data component, e.g. extract to filesystem */
void (*action_data)(struct archive_handle_t *);
/* How to process any sub archive, e.g. get_header_tar_gz */
char (*action_data_subarchive)(struct archive_handle_t *);
/* Contains the handle to a sub archive */
struct archive_handle_t *sub_archive;
/* The raw stream as read from disk or stdin */
int src_fd;
/* Count the number of bytes processed */
off_t offset;
/* Function that skips data: read_by_char or read_by_skip */
void (*seek)(const struct archive_handle_t *archive_handle, const unsigned amount);
/* Temporary storage */
char *buffer;
/* Flags and misc. stuff */
unsigned char flags;
} archive_handle_t;
extern archive_handle_t *init_handle(void);
extern char filter_accept_all(archive_handle_t *archive_handle);
extern char filter_accept_list(archive_handle_t *archive_handle);
extern char filter_accept_list_reassign(archive_handle_t *archive_handle);
extern char filter_accept_reject_list(archive_handle_t *archive_handle);
extern void unpack_ar_archive(archive_handle_t *ar_archive);
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 data_extract_to_buffer(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_or_die(int src_fd);
extern char get_header_ar(archive_handle_t *archive_handle);
extern char get_header_cpio(archive_handle_t *archive_handle);
extern char get_header_tar(archive_handle_t *archive_handle);
extern char get_header_tar_bz2(archive_handle_t *archive_handle);
extern char get_header_tar_lzma(archive_handle_t *archive_handle);
extern char get_header_tar_gz(archive_handle_t *archive_handle);
extern void seek_by_jump(const archive_handle_t *archive_handle, const unsigned amount);
extern void seek_by_read(const archive_handle_t *archive_handle, const unsigned amount);
extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned char *buf, size_t count);
extern void data_align(archive_handle_t *archive_handle, const unsigned short boundary);
extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
extern const llist_t *find_list_entry2(const llist_t *list, const char *filename);
/* A bit of bunzip2 internals are exposed for compressed help support: */
typedef struct bunzip_data bunzip_data;
int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len);
int read_bunzip(bunzip_data *bd, char *outbuf, int len);
void dealloc_bunzip(bunzip_data *bd);
typedef struct inflate_unzip_result {
off_t bytes_out;
uint32_t crc;
} inflate_unzip_result;
extern USE_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd);
extern USE_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, unsigned bufsize, int src_fd, int dst_fd);
extern USE_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd);
extern USE_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd);
#if BB_MMU
extern int open_transformer(int src_fd,
USE_DESKTOP(long long) int (*transformer)(int src_fd, int dst_fd));
#define open_transformer(src_fd, transformer, transform_prog, ...) open_transformer(src_fd, transformer)
#else
extern int open_transformer(int src_fd, const char *transform_prog, ...);
#define open_transformer(src_fd, transformer, transform_prog, ...) open_transformer(src_fd, transform_prog, __VA_ARGS__)
#endif
#endif
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