contrib/libarchive/archive_util.c

   1 /*-
   2  * Copyright (c) 2003-2004 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  *    in this position and unchanged.
  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: src/lib/libarchive/archive_util.c,v 1.9 2005/02/23 06:57:04 kientzle Exp $");
  29
  30 #include <sys/types.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include "archive.h"
  35 #include "archive_private.h"
  36
  37 int
  38 archive_api_feature(void)
  39 {
  40         return (ARCHIVE_API_FEATURE);
  41 }
  42
  43 int
  44 archive_api_version(void)
  45 {
  46         return (ARCHIVE_API_VERSION);
  47 }
  48
  49 const char *
  50 archive_version(void)
  51 {
  52         return (PACKAGE_NAME " " PACKAGE_VERSION);
  53 }
  54
  55 int
  56 archive_errno(struct archive *a)
  57 {
  58         return (a->archive_error_number);
  59 }
  60
  61 const char *
  62 archive_error_string(struct archive *a)
  63 {
  64
  65         if (a->error != NULL  &&  *a->error != '\0')
  66                 return (a->error);
  67         else
  68                 return ("(Empty error message)");
  69 }
  70
  71
  72 int
  73 archive_format(struct archive *a)
  74 {
  75         return (a->archive_format);
  76 }
  77
  78 const char *
  79 archive_format_name(struct archive *a)
  80 {
  81         return (a->archive_format_name);
  82 }
  83
  84
  85 int
  86 archive_compression(struct archive *a)
  87 {
  88         return (a->compression_code);
  89 }
  90
  91 const char *
  92 archive_compression_name(struct archive *a)
  93 {
  94         return (a->compression_name);
  95 }
  96
  97
  98 /*
  99  * Return a count of the number of compressed bytes processed.
 100  */
 101 int64_t
 102 archive_position_compressed(struct archive *a)
 103 {
 104         return (a->raw_position);
 105 }
 106
 107 /*
 108  * Return a count of the number of uncompressed bytes processed.
 109  */
 110 int64_t
 111 archive_position_uncompressed(struct archive *a)
 112 {
 113         return (a->file_position);
 114 }
 115
 116
 117 void
 118 archive_set_error(struct archive *a, int error_number, const char *fmt, ...)
 119 {
 120         va_list ap;
 121 #ifdef HAVE_STRERROR_R
 122         char errbuff[512];
 123 #endif
 124         char *errp;
 125
 126         a->archive_error_number = error_number;
 127         if (fmt == NULL) {
 128                 a->error = NULL;
 129                 return;
 130         }
 131
 132         va_start(ap, fmt);
 133         archive_string_vsprintf(&(a->error_string), fmt, ap);
 134         if(error_number > 0) {
 135                 archive_strcat(&(a->error_string), ": ");
 136 #ifdef HAVE_STRERROR_R
 137 #ifdef STRERROR_R_CHAR_P
 138                 errp = strerror_r(error_number, errbuff, sizeof(errbuff));
 139 #else
 140                 strerror_r(error_number, errbuff, sizeof(errbuff));
 141                 errp = errbuff;
 142 #endif
 143 #else
 144                 /* Note: this is not threadsafe! */
 145                 errp = strerror(error_number);
 146 #endif
 147                 archive_strcat(&(a->error_string), errp);
 148         }
 149         a->error = a->error_string.s;
 150         va_end(ap);
 151 }
 152
 153 void
 154 __archive_errx(int retvalue, const char *msg)
 155 {
 156         static const char *msg1 = "Fatal Internal Error in libarchive: ";
 157         write(2, msg1, strlen(msg1));
 158         write(2, msg, strlen(msg));
 159         write(2, "\n", 1);
 160         exit(retvalue);
 161 }