diff options
Diffstat (limited to 'include/unarchive.h')
| -rw-r--r-- | include/unarchive.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/include/unarchive.h b/include/unarchive.h new file mode 100644 index 0000000..9077130 --- /dev/null +++ b/include/unarchive.h @@ -0,0 +1,157 @@ +/* vi: set sw=4 ts=4: */ +#ifndef __UNARCHIVE_H__ +#define __UNARCHIVE_H__ + +#if __GNUC_PREREQ(4,1) +# pragma GCC visibility push(hidden) +#endif + +#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; +#if ENABLE_FEATURE_TAR_UNAME_GNAME + char *uname; + char *gname; +#endif + 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 FAST_FUNC (*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 FAST_FUNC (*action_header)(const file_header_t *); + + /* Process the data component, e.g. extract to filesystem */ + void FAST_FUNC (*action_data)(struct archive_handle_t *); + +#if ENABLE_DPKG || ENABLE_DPKG_DEB + /* "subarchive" is used only by dpkg[-deb] applets */ + /* How to process any sub archive, e.g. get_header_tar_gz */ + char FAST_FUNC (*action_data_subarchive)(struct archive_handle_t *); + /* Contains the handle to a sub archive */ + struct archive_handle_t *sub_archive; +#endif + + /* 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 FAST_FUNC (*seek)(const struct archive_handle_t *archive_handle, const unsigned amount); + + /* Temporary storage */ + char *buffer; + + /* Flags and misc. stuff */ + unsigned char ah_flags; + + /* "Private" storage for archivers */ +// unsigned char ah_priv_inited; + void *ah_priv[8]; + +} archive_handle_t; + + +/* Info struct unpackers can fill out to inform users of thing like + * timestamps of unpacked files */ +typedef struct unpack_info_t { + time_t mtime; +} unpack_info_t; + +extern archive_handle_t *init_handle(void) FAST_FUNC; + +extern char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC; +extern char filter_accept_list(archive_handle_t *archive_handle) FAST_FUNC; +extern char filter_accept_list_reassign(archive_handle_t *archive_handle) FAST_FUNC; +extern char filter_accept_reject_list(archive_handle_t *archive_handle) FAST_FUNC; + +extern void unpack_ar_archive(archive_handle_t *ar_archive) FAST_FUNC; + +extern void data_skip(archive_handle_t *archive_handle) FAST_FUNC; +extern void data_extract_all(archive_handle_t *archive_handle) FAST_FUNC; +extern void data_extract_to_stdout(archive_handle_t *archive_handle) FAST_FUNC; +extern void data_extract_to_buffer(archive_handle_t *archive_handle) FAST_FUNC; + +extern void header_skip(const file_header_t *file_header) FAST_FUNC; +extern void header_list(const file_header_t *file_header) FAST_FUNC; +extern void header_verbose_list(const file_header_t *file_header) FAST_FUNC; + +extern char get_header_ar(archive_handle_t *archive_handle) FAST_FUNC; +extern char get_header_cpio(archive_handle_t *archive_handle) FAST_FUNC; +extern char get_header_tar(archive_handle_t *archive_handle) FAST_FUNC; +extern char get_header_tar_gz(archive_handle_t *archive_handle) FAST_FUNC; +extern char get_header_tar_bz2(archive_handle_t *archive_handle) FAST_FUNC; +extern char get_header_tar_lzma(archive_handle_t *archive_handle) FAST_FUNC; + +extern void seek_by_jump(const archive_handle_t *archive_handle, unsigned amount) FAST_FUNC; +extern void seek_by_read(const archive_handle_t *archive_handle, unsigned amount) FAST_FUNC; + +extern void data_align(archive_handle_t *archive_handle, unsigned boundary) FAST_FUNC; +extern const llist_t *find_list_entry(const llist_t *list, const char *filename) FAST_FUNC; +extern const llist_t *find_list_entry2(const llist_t *list, const char *filename) FAST_FUNC; + +/* 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) FAST_FUNC; +int read_bunzip(bunzip_data *bd, char *outbuf, int len) FAST_FUNC; +void dealloc_bunzip(bunzip_data *bd) FAST_FUNC; + +typedef struct inflate_unzip_result { + off_t bytes_out; + uint32_t crc; +} inflate_unzip_result; + +USE_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd) FAST_FUNC; +/* lzma unpacker takes .lzma stream from offset 0 */ +USE_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd) FAST_FUNC; +/* the rest wants 2 first bytes already skipped by the caller */ +USE_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd) FAST_FUNC; +USE_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd) FAST_FUNC; +USE_DESKTOP(long long) int unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info) FAST_FUNC; +USE_DESKTOP(long long) int unpack_Z_stream(int fd_in, int fd_out) FAST_FUNC; +/* wrapper which checks first two bytes to be "BZ" */ +USE_DESKTOP(long long) int unpack_bz2_stream_prime(int src_fd, int dst_fd) FAST_FUNC; + +int bbunpack(char **argv, + char* (*make_new_name)(char *filename), + USE_DESKTOP(long long) int (*unpacker)(unpack_info_t *info)) FAST_FUNC; + +#if BB_MMU +void open_transformer(int fd, + USE_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd)) FAST_FUNC; +#define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transformer) +#else +void open_transformer(int src_fd, const char *transform_prog) FAST_FUNC; +#define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transform_prog) +#endif + +#if __GNUC_PREREQ(4,1) +# pragma GCC visibility pop +#endif + +#endif |