contrib/libarchive/libarchive/archive_read_set_options.c

   1 /*-
   2  * Copyright (c) 2011 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
  26 #include "archive_platform.h"
  27 __FBSDID("$FreeBSD$");
  28
  29 #include "archive_read_private.h"
  30 #include "archive_options_private.h"
  31
  32 static int      archive_set_format_option(struct archive *a,
  33                     const char *m, const char *o, const char *v);
  34 static int      archive_set_filter_option(struct archive *a,
  35                     const char *m, const char *o, const char *v);
  36 static int      archive_set_option(struct archive *a,
  37                     const char *m, const char *o, const char *v);
  38
  39 int
  40 archive_read_set_format_option(struct archive *a, const char *m, const char *o,
  41     const char *v)
  42 {
  43         return _archive_set_option(a, m, o, v,
  44             ARCHIVE_READ_MAGIC, "archive_read_set_format_option",
  45             archive_set_format_option);
  46 }
  47
  48 int
  49 archive_read_set_filter_option(struct archive *a, const char *m, const char *o,
  50     const char *v)
  51 {
  52         return _archive_set_option(a, m, o, v,
  53             ARCHIVE_READ_MAGIC, "archive_read_set_filter_option",
  54             archive_set_filter_option);
  55 }
  56
  57 int
  58 archive_read_set_option(struct archive *a, const char *m, const char *o,
  59     const char *v)
  60 {
  61         return _archive_set_option(a, m, o, v,
  62             ARCHIVE_READ_MAGIC, "archive_read_set_option",
  63             archive_set_option);
  64 }
  65
  66 int
  67 archive_read_set_options(struct archive *a, const char *options)
  68 {
  69         return _archive_set_options(a, options,
  70             ARCHIVE_READ_MAGIC, "archive_read_set_options",
  71             archive_set_option);
  72 }
  73
  74 static int
  75 archive_set_format_option(struct archive *_a, const char *m, const char *o,
  76     const char *v)
  77 {
  78         struct archive_read *a = (struct archive_read *)_a;
  79         size_t i;
  80         int r, rv = ARCHIVE_WARN, matched_modules = 0;
  81
  82         for (i = 0; i < sizeof(a->formats)/sizeof(a->formats[0]); i++) {
  83                 struct archive_format_descriptor *format = &a->formats[i];
  84
  85                 if (format->options == NULL || format->name == NULL)
  86                         /* This format does not support option. */
  87                         continue;
  88                 if (m != NULL) {
  89                         if (strcmp(format->name, m) != 0)
  90                                 continue;
  91                         ++matched_modules;
  92                 }
  93
  94                 a->format = format;
  95                 r = format->options(a, o, v);
  96                 a->format = NULL;
  97
  98                 if (r == ARCHIVE_FATAL)
  99                         return (ARCHIVE_FATAL);
 100
 101                 if (r == ARCHIVE_OK)
 102                         rv = ARCHIVE_OK;
 103         }
 104         /* If the format name didn't match, return a special code for
 105          * _archive_set_option[s]. */
 106         if (m != NULL && matched_modules == 0)
 107                 return ARCHIVE_WARN - 1;
 108         return (rv);
 109 }
 110
 111 static int
 112 archive_set_filter_option(struct archive *_a, const char *m, const char *o,
 113     const char *v)
 114 {
 115         struct archive_read *a = (struct archive_read *)_a;
 116         struct archive_read_filter *filter;
 117         struct archive_read_filter_bidder *bidder;
 118         int r, rv = ARCHIVE_WARN, matched_modules = 0;
 119
 120         for (filter = a->filter; filter != NULL; filter = filter->upstream) {
 121                 bidder = filter->bidder;
 122                 if (bidder == NULL)
 123                         continue;
 124                 if (bidder->options == NULL)
 125                         /* This bidder does not support option */
 126                         continue;
 127                 if (m != NULL) {
 128                         if (strcmp(filter->name, m) != 0)
 129                                 continue;
 130                         ++matched_modules;
 131                 }
 132
 133                 r = bidder->options(bidder, o, v);
 134
 135                 if (r == ARCHIVE_FATAL)
 136                         return (ARCHIVE_FATAL);
 137
 138                 if (r == ARCHIVE_OK)
 139                         rv = ARCHIVE_OK;
 140         }
 141         /* If the filter name didn't match, return a special code for
 142          * _archive_set_option[s]. */
 143         if (m != NULL && matched_modules == 0)
 144                 return ARCHIVE_WARN - 1;
 145         return (rv);
 146 }
 147
 148 static int
 149 archive_set_option(struct archive *a, const char *m, const char *o,
 150     const char *v)
 151 {
 152         return _archive_set_either_option(a, m, o, v,
 153             archive_set_format_option,
 154             archive_set_filter_option);
 155 }