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