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1 /*-
2  * Copyright (c) 2003-2007 Tim Kientzle
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  *
25  * $FreeBSD$
26  */
27
28 #include "bsdtar_platform.h"
29 #include <stdio.h>
30
31 #include "matching.h"
32
33 #define DEFAULT_BYTES_PER_BLOCK (20*512)
34
35 /*
36  * The internal state for the "bsdtar" program.
37  *
38  * Keeping all of the state in a structure like this simplifies memory
39  * leak testing (at exit, anything left on the heap is suspect).  A
40  * pointer to this structure is passed to most bsdtar internal
41  * functions.
42  */
43 struct bsdtar {
44         /* Options */
45         const char       *filename; /* -f filename */
46         const char       *create_format; /* -F format */
47         char             *pending_chdir; /* -C dir */
48         const char       *names_from_file; /* -T file */
49         time_t            newer_ctime_sec; /* --newer/--newer-than */
50         long              newer_ctime_nsec; /* --newer/--newer-than */
51         time_t            newer_mtime_sec; /* --newer-mtime */
52         long              newer_mtime_nsec; /* --newer-mtime-than */
53         int               bytes_per_block; /* -b block_size */
54         int               verbose;   /* -v */
55         int               extract_flags; /* Flags for extract operation */
56         int               strip_components; /* Remove this many leading dirs */
57         char              mode; /* Program mode: 'c', 't', 'r', 'u', 'x' */
58         char              symlink_mode; /* H or L, per BSD conventions */
59         char              create_compression; /* j, y, or z */
60         const char       *compress_program;
61         char              option_absolute_paths; /* -P */
62         char              option_chroot; /* --chroot */
63         char              option_dont_traverse_mounts; /* --one-file-system */
64         char              option_fast_read; /* --fast-read */
65         const char       *option_options; /* --options */
66         char              option_honor_nodump; /* --nodump */
67         char              option_interactive; /* -w */
68         char              option_no_owner; /* -o */
69         char              option_no_subdirs; /* -n */
70         char              option_null; /* --null */
71         char              option_numeric_owner; /* --numeric-owner */
72         char              option_stdout; /* -O */
73         char              option_totals; /* --totals */
74         char              option_unlink_first; /* -U */
75         char              option_warn_links; /* --check-links */
76         char              day_first; /* show day before month in -tv output */
77
78         /* If >= 0, then close this when done. */
79         int               fd;
80
81         /* Miscellaneous state information */
82         int               argc;
83         char            **argv;
84         const char       *optarg;
85         size_t            gs_width; /* For 'list_item' in read.c */
86         size_t            u_width; /* for 'list_item' in read.c */
87         uid_t             user_uid; /* UID running this program */
88         int               return_value; /* Value returned by main() */
89         char              warned_lead_slash; /* Already displayed warning */
90         char              next_line_is_dir; /* Used for -C parsing in -cT */
91
92         /*
93          * Data for various subsystems.  Full definitions are located in
94          * the file where they are used.
95          */
96         struct archive          *diskreader;    /* for write.c */
97         struct archive_entry_linkresolver *resolver; /* for write.c */
98         struct archive_dir      *archive_dir;   /* for write.c */
99         struct name_cache       *gname_cache;   /* for write.c */
100         char                    *buff;          /* for write.c */
101         struct lafe_matching    *matching;      /* for matching.c */
102         struct security         *security;      /* for read.c */
103         struct name_cache       *uname_cache;   /* for write.c */
104         struct siginfo_data     *siginfo;       /* for siginfo.c */
105         struct substitution     *substitution;  /* for subst.c */
106 };
107
108 /* Fake short equivalents for long options that otherwise lack them. */
109 enum {
110         OPTION_CHECK_LINKS = 1,
111         OPTION_CHROOT,
112         OPTION_EXCLUDE,
113         OPTION_FORMAT,
114         OPTION_OPTIONS,
115         OPTION_HELP,
116         OPTION_INCLUDE,
117         OPTION_KEEP_NEWER_FILES,
118         OPTION_LZMA,
119         OPTION_NEWER_CTIME,
120         OPTION_NEWER_CTIME_THAN,
121         OPTION_NEWER_MTIME,
122         OPTION_NEWER_MTIME_THAN,
123         OPTION_NODUMP,
124         OPTION_NO_SAME_OWNER,
125         OPTION_NO_SAME_PERMISSIONS,
126         OPTION_NULL,
127         OPTION_NUMERIC_OWNER,
128         OPTION_ONE_FILE_SYSTEM,
129         OPTION_POSIX,
130         OPTION_SAME_OWNER,
131         OPTION_STRIP_COMPONENTS,
132         OPTION_TOTALS,
133         OPTION_USE_COMPRESS_PROGRAM,
134         OPTION_VERSION
135 };
136
137 int     bsdtar_getopt(struct bsdtar *);
138 void    do_chdir(struct bsdtar *);
139 int     edit_pathname(struct bsdtar *, struct archive_entry *);
140 int     need_report(void);
141 int     pathcmp(const char *a, const char *b);
142 void    safe_fprintf(FILE *, const char *fmt, ...);
143 void    set_chdir(struct bsdtar *, const char *newdir);
144 const char *tar_i64toa(int64_t);
145 void    tar_mode_c(struct bsdtar *bsdtar);
146 void    tar_mode_r(struct bsdtar *bsdtar);
147 void    tar_mode_t(struct bsdtar *bsdtar);
148 void    tar_mode_u(struct bsdtar *bsdtar);
149 void    tar_mode_x(struct bsdtar *bsdtar);
150 void    usage(void);
151 int     yes(const char *fmt, ...);
152
153 #if HAVE_REGEX_H
154 void    add_substitution(struct bsdtar *, const char *);
155 int     apply_substitution(struct bsdtar *, const char *, char **, int);
156 void    cleanup_substitution(struct bsdtar *);
157 #endif