contrib/libarchive/libarchive/archive_write_set_format_filter_by_ext.c

   1 /*-
   2  * Copyright (c) 2003-2007 Tim Kientzle
   3  * Copyright (c) 2015 Okhotnikov Kirill
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include "archive_platform.h"
  28 __FBSDID("$FreeBSD$");
  29
  30 #ifdef HAVE_SYS_TYPES_H
  31 #include <sys/types.h>
  32 #endif
  33
  34 #ifdef HAVE_ERRNO_H
  35 #include <errno.h>
  36 #endif
  37 #ifdef HAVE_STRING_H
  38 #include <string.h>
  39 #endif
  40
  41 #include "archive.h"
  42 #include "archive_private.h"
  43
  44 /* A table that maps names to functions. */
  45 static
  46 struct { const char *name; int (*format)(struct archive *); int (*filter)(struct archive *);  } names[] =
  47 {
  48         { ".7z",        archive_write_set_format_7zip,            archive_write_add_filter_none},
  49         { ".zip",       archive_write_set_format_zip,             archive_write_add_filter_none},
  50         { ".jar",       archive_write_set_format_zip,             archive_write_add_filter_none},
  51         { ".cpio",      archive_write_set_format_cpio,            archive_write_add_filter_none},
  52         { ".iso",       archive_write_set_format_iso9660,         archive_write_add_filter_none},
  53 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
  54         { ".a",         archive_write_set_format_ar_bsd,          archive_write_add_filter_none},
  55         { ".ar",        archive_write_set_format_ar_bsd,          archive_write_add_filter_none},
  56 #else
  57         { ".a",         archive_write_set_format_ar_svr4,         archive_write_add_filter_none},
  58         { ".ar",        archive_write_set_format_ar_svr4,         archive_write_add_filter_none},
  59 #endif
  60         { ".tar",       archive_write_set_format_pax_restricted,  archive_write_add_filter_none},
  61         { ".tgz",       archive_write_set_format_pax_restricted,  archive_write_add_filter_gzip},
  62         { ".tar.gz",    archive_write_set_format_pax_restricted,  archive_write_add_filter_gzip},
  63         { ".tar.bz2",   archive_write_set_format_pax_restricted,  archive_write_add_filter_bzip2},
  64         { ".tar.xz",    archive_write_set_format_pax_restricted,  archive_write_add_filter_xz},
  65         { NULL,         NULL,                             NULL }
  66 };
  67
  68 static
  69 int cmpsuff(const char *str, const char *suffix)
  70 {
  71   size_t length_str, length_suffix;
  72
  73   if ((str == NULL) || (suffix == NULL))
  74     return -1;
  75
  76   length_str = strlen(str);
  77   length_suffix = strlen(suffix);
  78
  79   if (length_str >= length_suffix) {
  80     return strcmp(str + (length_str - length_suffix), suffix);
  81   } else {
  82     return -1;
  83   }
  84 }
  85
  86 static int get_array_index(const char *name)
  87 {
  88   int i;
  89
  90   for (i = 0; names[i].name != NULL; i++)
  91   {
  92     if (cmpsuff(name, names[i].name) == 0)
  93       return i;
  94   }
  95   return -1;
  96
  97 }
  98
  99 int
 100 archive_write_set_format_filter_by_ext(struct archive *a, const char *filename)
 101 {
 102   int names_index = get_array_index(filename);
 103
 104   if (names_index >= 0)
 105   {
 106     int format_state = (names[names_index].format)(a);
 107     if (format_state == ARCHIVE_OK)
 108       return ((names[names_index].filter)(a));
 109     else
 110       return format_state;
 111   }
 112
 113   archive_set_error(a, EINVAL, "No such format '%s'", filename);
 114   a->state = ARCHIVE_STATE_FATAL;
 115   return (ARCHIVE_FATAL);
 116 }
 117
 118 int
 119 archive_write_set_format_filter_by_ext_def(struct archive *a, const char *filename, const char * def_ext)
 120 {
 121   int names_index = get_array_index(filename);
 122
 123   if (names_index < 0)
 124     names_index = get_array_index(def_ext);
 125
 126   if (names_index >= 0)
 127   {
 128     int format_state = (names[names_index].format)(a);
 129     if (format_state == ARCHIVE_OK)
 130       return ((names[names_index].filter)(a));
 131     else
 132       return format_state;
 133   }
 134
 135   archive_set_error(a, EINVAL, "No such format '%s'", filename);
 136   a->state = ARCHIVE_STATE_FATAL;
 137   return (ARCHIVE_FATAL);
 138 }
 139
 140
 141
 142