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- #ifndef UNARCHIVE_H
- #define UNARCHIVE_H 1
- PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
- enum {
- #if BB_BIG_ENDIAN
- COMPRESS_MAGIC = 0x1f9d,
- GZIP_MAGIC = 0x1f8b,
- BZIP2_MAGIC = 256 * 'B' + 'Z',
-
-
- XZ_MAGIC1 = 256 * 0xfd + '7',
- XZ_MAGIC2 = 256 * (unsigned)(256 * (256 * 'z' + 'X') + 'Z') + 0,
-
-
- XZ_MAGIC1a = 256 * (unsigned)(256 * (256 * 0xfd + '7') + 'z') + 'X',
- XZ_MAGIC2a = 256 * 'Z' + 0,
- #else
- COMPRESS_MAGIC = 0x9d1f,
- GZIP_MAGIC = 0x8b1f,
- BZIP2_MAGIC = 'B' + 'Z' * 256,
- XZ_MAGIC1 = 0xfd + '7' * 256,
- XZ_MAGIC2 = 'z' + ('X' + ('Z' + 0 * 256) * 256) * 256,
- XZ_MAGIC1a = 0xfd + ('7' + ('z' + 'X' * 256) * 256) * 256,
- XZ_MAGIC2a = 'Z' + 0 * 256,
- #endif
- };
- typedef struct file_header_t {
- char *name;
- char *link_target;
- #if ENABLE_FEATURE_TAR_UNAME_GNAME
- char *tar__uname;
- char *tar__gname;
- #endif
- off_t size;
- uid_t uid;
- gid_t gid;
- mode_t mode;
- time_t mtime;
- dev_t device;
- } file_header_t;
- struct hardlinks_t;
- typedef struct archive_handle_t {
-
- unsigned ah_flags;
-
- int src_fd;
-
- char FAST_FUNC (*filter)(struct archive_handle_t *);
-
- llist_t *accept;
-
- llist_t *reject;
-
- llist_t *passed;
-
- file_header_t *file_header;
-
- llist_t *link_placeholders;
-
- void FAST_FUNC (*action_header)(const file_header_t *);
-
- void FAST_FUNC (*action_data)(struct archive_handle_t *);
-
- void FAST_FUNC (*seek)(int fd, off_t amount);
-
- off_t offset;
-
- #if ENABLE_FEATURE_TAR_LONG_OPTIONS
- unsigned tar__strip_components;
- #endif
- #define PAX_NEXT_FILE 0
- #define PAX_GLOBAL 1
- #if ENABLE_TAR || ENABLE_DPKG || ENABLE_DPKG_DEB
- smallint tar__end;
- # if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
- char* tar__longname;
- char* tar__linkname;
- # endif
- # if ENABLE_FEATURE_TAR_TO_COMMAND
- char* tar__to_command;
- const char* tar__to_command_shell;
- # endif
- # if ENABLE_FEATURE_TAR_SELINUX
- char* tar__sctx[2];
- # endif
- #endif
- #if ENABLE_CPIO || ENABLE_RPM2CPIO || ENABLE_RPM
- uoff_t cpio__blocks;
- struct bb_uidgid_t cpio__owner;
- struct hardlinks_t *cpio__hardlinks_to_create;
- struct hardlinks_t *cpio__created_hardlinks;
- #endif
- #if ENABLE_DPKG || ENABLE_DPKG_DEB
-
- char *dpkg__buffer;
-
- char FAST_FUNC (*dpkg__action_data_subarchive)(struct archive_handle_t *);
-
- struct archive_handle_t *dpkg__sub_archive;
- #endif
- #if ENABLE_FEATURE_AR_CREATE
- const char *ar__name;
- struct archive_handle_t *ar__out;
- #endif
- #if ENABLE_FEATURE_AR_LONG_FILENAMES
- char *ar__long_names;
- unsigned ar__long_name_size;
- #endif
- } archive_handle_t;
- #define ARCHIVE_RESTORE_DATE (1 << 0)
- #define ARCHIVE_CREATE_LEADING_DIRS (1 << 1)
- #define ARCHIVE_UNLINK_OLD (1 << 2)
- #define ARCHIVE_EXTRACT_NEWER (1 << 3)
- #define ARCHIVE_DONT_RESTORE_OWNER (1 << 4)
- #define ARCHIVE_DONT_RESTORE_PERM (1 << 5)
- #define ARCHIVE_NUMERIC_OWNER (1 << 6)
- #define ARCHIVE_O_TRUNC (1 << 7)
- #define ARCHIVE_REMEMBER_NAMES (1 << 8)
- #if ENABLE_RPM
- #define ARCHIVE_REPLACE_VIA_RENAME (1 << 9)
- #endif
- #define TAR_BLOCK_SIZE 512
- #define NAME_SIZE 100
- #define NAME_SIZE_STR "100"
- typedef struct tar_header_t {
- char name[NAME_SIZE];
- char mode[8];
- char uid[8];
- char gid[8];
- char size[12];
- char mtime[12];
- char chksum[8];
- char typeflag;
- char linkname[NAME_SIZE];
-
-
-
- char magic[8];
- char uname[32];
- char gname[32];
- char devmajor[8];
- char devminor[8];
- char prefix[155];
- char padding[12];
- } tar_header_t;
- struct BUG_tar_header {
- char c[sizeof(tar_header_t) == TAR_BLOCK_SIZE ? 1 : -1];
- };
- void chksum_and_xwrite_tar_header(int fd, struct tar_header_t *hp) FAST_FUNC;
- extern const char cpio_TRAILER[];
- archive_handle_t *init_handle(void) FAST_FUNC;
- char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC;
- char filter_accept_list(archive_handle_t *archive_handle) FAST_FUNC;
- char filter_accept_list_reassign(archive_handle_t *archive_handle) FAST_FUNC;
- char filter_accept_reject_list(archive_handle_t *archive_handle) FAST_FUNC;
- void unpack_ar_archive(archive_handle_t *ar_archive) FAST_FUNC;
- void data_skip(archive_handle_t *archive_handle) FAST_FUNC;
- void data_extract_all(archive_handle_t *archive_handle) FAST_FUNC;
- void data_extract_to_stdout(archive_handle_t *archive_handle) FAST_FUNC;
- void data_extract_to_command(archive_handle_t *archive_handle) FAST_FUNC;
- void header_skip(const file_header_t *file_header) FAST_FUNC;
- void header_list(const file_header_t *file_header) FAST_FUNC;
- void header_verbose_list(const file_header_t *file_header) FAST_FUNC;
- char get_header_ar(archive_handle_t *archive_handle) FAST_FUNC;
- char get_header_cpio(archive_handle_t *archive_handle) FAST_FUNC;
- char get_header_tar(archive_handle_t *archive_handle) FAST_FUNC;
- char get_header_tar_gz(archive_handle_t *archive_handle) FAST_FUNC;
- char get_header_tar_bz2(archive_handle_t *archive_handle) FAST_FUNC;
- char get_header_tar_lzma(archive_handle_t *archive_handle) FAST_FUNC;
- char get_header_tar_xz(archive_handle_t *archive_handle) FAST_FUNC;
- void seek_by_jump(int fd, off_t amount) FAST_FUNC;
- void seek_by_read(int fd, off_t amount) FAST_FUNC;
- const char *strip_unsafe_prefix(const char *str) FAST_FUNC;
- void create_or_remember_link(llist_t **link_placeholders,
- const char *target,
- const char *linkname,
- int hard_link) FAST_FUNC;
- void create_links_from_list(llist_t *list) FAST_FUNC;
- void data_align(archive_handle_t *archive_handle, unsigned boundary) FAST_FUNC;
- const llist_t *find_list_entry(const llist_t *list, const char *filename) FAST_FUNC;
- const llist_t *find_list_entry2(const llist_t *list, const char *filename) FAST_FUNC;
- char *unpack_bz2_data(const char *packed, int packed_len, int unpacked_len) FAST_FUNC;
- typedef struct transformer_state_t {
- smallint signature_skipped;
- IF_DESKTOP(long long) int FAST_FUNC (*xformer)(struct transformer_state_t *xstate);
- USE_FOR_NOMMU(const char *xformer_prog;)
-
- int src_fd;
-
- int dst_fd;
- size_t mem_output_size_max;
- size_t mem_output_size;
- char *mem_output_buf;
- off_t bytes_out;
- off_t bytes_in;
- uint32_t crc32;
- time_t mtime;
- union {
- uint8_t b[8];
- uint16_t b16[4];
- uint32_t b32[2];
- } magic;
- } transformer_state_t;
- void init_transformer_state(transformer_state_t *xstate) FAST_FUNC;
- ssize_t transformer_write(transformer_state_t *xstate, const void *buf, size_t bufsize) FAST_FUNC;
- ssize_t xtransformer_write(transformer_state_t *xstate, const void *buf, size_t bufsize) FAST_FUNC;
- int check_signature16(transformer_state_t *xstate, unsigned magic16) FAST_FUNC;
- IF_DESKTOP(long long) int inflate_unzip(transformer_state_t *xstate) FAST_FUNC;
- IF_DESKTOP(long long) int unpack_Z_stream(transformer_state_t *xstate) FAST_FUNC;
- IF_DESKTOP(long long) int unpack_gz_stream(transformer_state_t *xstate) FAST_FUNC;
- IF_DESKTOP(long long) int unpack_bz2_stream(transformer_state_t *xstate) FAST_FUNC;
- IF_DESKTOP(long long) int unpack_lzma_stream(transformer_state_t *xstate) FAST_FUNC;
- IF_DESKTOP(long long) int unpack_xz_stream(transformer_state_t *xstate) FAST_FUNC;
- char* append_ext(char *filename, const char *expected_ext) FAST_FUNC;
- int bbunpack(char **argv,
- IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(transformer_state_t *xstate),
- char* FAST_FUNC (*make_new_name)(char *filename, const char *expected_ext),
- const char *expected_ext
- ) FAST_FUNC;
- #define BBUNPK_OPTSTR "cfkvq"
- #define BBUNPK_OPTSTRLEN 5
- #define BBUNPK_OPTSTRMASK ((1 << BBUNPK_OPTSTRLEN) - 1)
- enum {
- BBUNPK_OPT_STDOUT = 1 << 0,
- BBUNPK_OPT_FORCE = 1 << 1,
-
- BBUNPK_OPT_KEEP = 1 << 2,
- BBUNPK_OPT_VERBOSE = 1 << 3,
- BBUNPK_OPT_QUIET = 1 << 4,
-
- BBUNPK_OPT_DECOMPRESS = 1 << 5,
- BBUNPK_OPT_TEST = 1 << 6,
- BBUNPK_SEAMLESS_MAGIC = (1 << 31) * ENABLE_ZCAT * SEAMLESS_COMPRESSION,
- };
- void check_errors_in_children(int signo);
- #if BB_MMU
- void fork_transformer(int fd,
- int signature_skipped,
- IF_DESKTOP(long long) int FAST_FUNC (*transformer)(transformer_state_t *xstate)
- ) FAST_FUNC;
- #define fork_transformer_with_sig(fd, transformer, transform_prog) fork_transformer((fd), 0, (transformer))
- #define fork_transformer_with_no_sig(fd, transformer) fork_transformer((fd), 1, (transformer))
- #else
- void fork_transformer(int fd, const char *transform_prog) FAST_FUNC;
- #define fork_transformer_with_sig(fd, transformer, transform_prog) fork_transformer((fd), (transform_prog))
- #endif
- POP_SAVED_FUNCTION_VISIBILITY
- #endif
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