1 | /* vi: set sw=4 ts=4: */
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2 | #ifndef __UNARCHIVE_H__
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3 | #define __UNARCHIVE_H__
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4 |
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5 | #define ARCHIVE_PRESERVE_DATE 1
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6 | #define ARCHIVE_CREATE_LEADING_DIRS 2
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7 | #define ARCHIVE_EXTRACT_UNCONDITIONAL 4
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8 | #define ARCHIVE_EXTRACT_QUIET 8
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9 | #define ARCHIVE_EXTRACT_NEWER 16
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10 | #define ARCHIVE_NOPRESERVE_OWN 32
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11 | #define ARCHIVE_NOPRESERVE_PERM 64
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12 |
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13 | #include <sys/types.h>
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14 | #include <stdio.h>
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15 | #include "libbb.h"
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16 |
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17 | typedef struct file_headers_s {
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18 | char *name;
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19 | char *link_name;
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20 | off_t size;
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21 | uid_t uid;
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22 | gid_t gid;
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23 | mode_t mode;
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24 | time_t mtime;
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25 | dev_t device;
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26 | } file_header_t;
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27 |
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28 | typedef struct archive_handle_s {
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29 | /* define if the header and data component should processed */
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30 | char (*filter)(struct archive_handle_s *);
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31 | llist_t *accept;
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32 | /* List of files that have been rejected */
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33 | llist_t *reject;
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34 | /* List of files that have successfully been worked on */
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35 | llist_t *passed;
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36 |
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37 | /* Contains the processed header entry */
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38 | file_header_t *file_header;
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39 |
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40 | /* process the header component, e.g. tar -t */
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41 | void (*action_header)(const file_header_t *);
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42 |
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43 | /* process the data component, e.g. extract to filesystem */
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44 | void (*action_data)(struct archive_handle_s *);
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45 |
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46 | /* How to process any sub archive, e.g. get_header_tar_gz */
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47 | char (*action_data_subarchive)(struct archive_handle_s *);
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48 |
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49 | /* Contains the handle to a sub archive */
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50 | struct archive_handle_s *sub_archive;
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51 |
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52 | /* The raw stream as read from disk or stdin */
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53 | int src_fd;
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54 |
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55 | /* Count the number of bytes processed */
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56 | off_t offset;
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57 |
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58 | /* Function that skips data: read_by_char or read_by_skip */
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59 | void (*seek)(const struct archive_handle_s *archive_handle, const unsigned int amount);
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60 |
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61 | /* Temporary storage */
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62 | char *buffer;
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63 |
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64 | /* Flags and misc. stuff */
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65 | unsigned char flags;
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66 |
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67 | } archive_handle_t;
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68 |
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69 | extern archive_handle_t *init_handle(void);
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70 |
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71 | extern char filter_accept_all(archive_handle_t *archive_handle);
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72 | extern char filter_accept_list(archive_handle_t *archive_handle);
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73 | extern char filter_accept_list_reassign(archive_handle_t *archive_handle);
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74 | extern char filter_accept_reject_list(archive_handle_t *archive_handle);
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75 |
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76 | extern void unpack_ar_archive(archive_handle_t *ar_archive);
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77 |
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78 | extern void data_skip(archive_handle_t *archive_handle);
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79 | extern void data_extract_all(archive_handle_t *archive_handle);
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80 | extern void data_extract_to_stdout(archive_handle_t *archive_handle);
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81 | extern void data_extract_to_buffer(archive_handle_t *archive_handle);
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82 |
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83 | extern void header_skip(const file_header_t *file_header);
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84 | extern void header_list(const file_header_t *file_header);
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85 | extern void header_verbose_list(const file_header_t *file_header);
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86 |
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87 | extern void check_header_gzip(int src_fd);
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88 |
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89 | extern char get_header_ar(archive_handle_t *archive_handle);
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90 | extern char get_header_cpio(archive_handle_t *archive_handle);
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91 | extern char get_header_tar(archive_handle_t *archive_handle);
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92 | extern char get_header_tar_bz2(archive_handle_t *archive_handle);
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93 | extern char get_header_tar_lzma(archive_handle_t *archive_handle);
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94 | extern char get_header_tar_gz(archive_handle_t *archive_handle);
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95 |
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96 | extern void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount);
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97 | extern void seek_by_char(const archive_handle_t *archive_handle, const unsigned int amount);
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98 |
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99 | extern void archive_xread_all(const archive_handle_t *archive_handle, void *buf, const size_t count);
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100 | extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned char *buf, size_t count);
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101 |
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102 | extern void data_align(archive_handle_t *archive_handle, const unsigned short boundary);
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103 | extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
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104 |
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105 | extern int uncompressStream(int src_fd, int dst_fd);
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106 | extern void inflate_init(unsigned int bufsize);
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107 | extern void inflate_cleanup(void);
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108 | extern int inflate_unzip(int in, int out);
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109 | extern int inflate_gunzip(int in, int out);
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110 | extern int unlzma(int src_fd, int dst_fd);
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111 |
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112 | extern int open_transformer(int src_fd, int (*transformer)(int src_fd, int dst_fd));
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113 |
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114 |
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115 | #endif
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