1 /* vi: set sw=4 ts=4: */
2 #ifndef __UNARCHIVE_H__
3 #define __UNARCHIVE_H__
5 #define ARCHIVE_PRESERVE_DATE 1
6 #define ARCHIVE_CREATE_LEADING_DIRS 2
7 #define ARCHIVE_EXTRACT_UNCONDITIONAL 4
8 #define ARCHIVE_EXTRACT_QUIET 8
9 #define ARCHIVE_EXTRACT_NEWER 16
10 #define ARCHIVE_NOPRESERVE_OWN 32
11 #define ARCHIVE_NOPRESERVE_PERM 64
13 typedef struct file_header_t {
16 #if ENABLE_FEATURE_TAR_UNAME_GNAME
28 typedef struct archive_handle_t {
29 /* define if the header and data component should be processed */
30 char (*filter)(struct archive_handle_t *);
32 /* List of files that have been rejected */
34 /* List of files that have successfully been worked on */
37 /* Contains the processed header entry */
38 file_header_t *file_header;
40 /* process the header component, e.g. tar -t */
41 void (*action_header)(const file_header_t *);
43 /* process the data component, e.g. extract to filesystem */
44 void (*action_data)(struct archive_handle_t *);
46 /* How to process any sub archive, e.g. get_header_tar_gz */
47 char (*action_data_subarchive)(struct archive_handle_t *);
49 /* Contains the handle to a sub archive */
50 struct archive_handle_t *sub_archive;
52 /* The raw stream as read from disk or stdin */
55 /* Count the number of bytes processed */
58 /* Function that skips data: read_by_char or read_by_skip */
59 void (*seek)(const struct archive_handle_t *archive_handle, const unsigned amount);
61 /* Temporary storage */
64 /* Flags and misc. stuff */
70 extern archive_handle_t *init_handle(void);
72 extern char filter_accept_all(archive_handle_t *archive_handle);
73 extern char filter_accept_list(archive_handle_t *archive_handle);
74 extern char filter_accept_list_reassign(archive_handle_t *archive_handle);
75 extern char filter_accept_reject_list(archive_handle_t *archive_handle);
77 extern void unpack_ar_archive(archive_handle_t *ar_archive);
79 extern void data_skip(archive_handle_t *archive_handle);
80 extern void data_extract_all(archive_handle_t *archive_handle);
81 extern void data_extract_to_stdout(archive_handle_t *archive_handle);
82 extern void data_extract_to_buffer(archive_handle_t *archive_handle);
84 extern void header_skip(const file_header_t *file_header);
85 extern void header_list(const file_header_t *file_header);
86 extern void header_verbose_list(const file_header_t *file_header);
88 extern char get_header_ar(archive_handle_t *archive_handle);
89 extern char get_header_cpio(archive_handle_t *archive_handle);
90 extern char get_header_tar(archive_handle_t *archive_handle);
91 extern char get_header_tar_bz2(archive_handle_t *archive_handle);
92 extern char get_header_tar_lzma(archive_handle_t *archive_handle);
93 extern char get_header_tar_gz(archive_handle_t *archive_handle);
95 extern void seek_by_jump(const archive_handle_t *archive_handle, unsigned amount);
96 extern void seek_by_read(const archive_handle_t *archive_handle, unsigned amount);
98 extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned char *buf, size_t count);
100 extern void data_align(archive_handle_t *archive_handle, unsigned boundary);
101 extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
102 extern const llist_t *find_list_entry2(const llist_t *list, const char *filename);
104 /* A bit of bunzip2 internals are exposed for compressed help support: */
105 typedef struct bunzip_data bunzip_data;
106 int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len);
107 int read_bunzip(bunzip_data *bd, char *outbuf, int len);
108 void dealloc_bunzip(bunzip_data *bd);
110 typedef struct inflate_unzip_result {
113 } inflate_unzip_result;
115 extern USE_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd);
116 extern USE_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd);
117 extern USE_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd);
118 extern USE_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd);
121 extern int open_transformer(int src_fd,
122 USE_DESKTOP(long long) int (*transformer)(int src_fd, int dst_fd));
123 #define open_transformer(src_fd, transformer, transform_prog) open_transformer(src_fd, transformer)
125 extern int open_transformer(int src_fd, const char *transform_prog);
126 #define open_transformer(src_fd, transformer, transform_prog) open_transformer(src_fd, transform_prog)