-#include <stdio.h> // for off_t
-
-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
-};
-
-typedef struct file_headers_s {
+/* vi: set sw=4 ts=4: */
+#ifndef UNARCHIVE_H
+#define UNARCHIVE_H 1
+
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
+
+#define ARCHIVE_RESTORE_DATE (1 << 0)
+#define ARCHIVE_CREATE_LEADING_DIRS (1 << 1)
+#define ARCHIVE_UNLINK_OLD (1 << 2)
+#define ARCHIVE_EXTRACT_QUIET (1 << 3)
+#define ARCHIVE_EXTRACT_NEWER (1 << 4)
+#define ARCHIVE_DONT_RESTORE_OWNER (1 << 5)
+#define ARCHIVE_DONT_RESTORE_PERM (1 << 6)
+#define ARCHIVE_NUMERIC_OWNER (1 << 7)
+
+typedef struct file_header_t {
char *name;
- char *link_name;
+ char *link_target;
+#if ENABLE_FEATURE_TAR_UNAME_GNAME
+ char *uname;
+ char *gname;
+#endif
off_t size;
uid_t uid;
gid_t gid;
dev_t device;
} 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);
+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 */
+ void FAST_FUNC (*seek)(int fd, off_t 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(int fd, off_t amount) FAST_FUNC;
+extern void seek_by_read(int fd, off_t 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;
+
+IF_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 */
+IF_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 */
+IF_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd) FAST_FUNC;
+IF_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd) FAST_FUNC;
+IF_DESKTOP(long long) int unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info) FAST_FUNC;
+IF_DESKTOP(long long) int unpack_Z_stream(int fd_in, int fd_out) FAST_FUNC;
+/* wrapper which checks first two bytes to be "BZ" */
+IF_DESKTOP(long long) int unpack_bz2_stream_prime(int src_fd, int dst_fd) FAST_FUNC;
-void seek_sub_file(FILE *src_stream, const int count);
+int bbunpack(char **argv,
+ char* (*make_new_name)(char *filename),
+ IF_DESKTOP(long long) int (*unpacker)(unpack_info_t *info)) FAST_FUNC;
-extern off_t archive_offset;
+#if BB_MMU
+void open_transformer(int fd,
+ IF_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
-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);
+POP_SAVED_FUNCTION_VISIBILITY
-char *deb_extract(const char *package_filename, FILE *out_stream, const int extract_function,
- const char *prefix, const char *filename);
+#endif
projects / oweals / busybox.git / blobdiff