lib/minitasn1/errors.c

   1 /*
   2  *      Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
   3  *      Copyright (C) 2002, 2005 Fabio Fiorina
   4  *
   5  * This file is part of LIBTASN1.
   6  *
   7  * The LIBTASN1 library is free software; you can redistribute it
   8  * and/or modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA
  21  */
  22
  23 #include <int.h>
  24 #ifdef STDC_HEADERS
  25 # include <stdarg.h>
  26 #endif
  27
  28 #define LIBTASN1_ERROR_ENTRY(name) { #name, name }
  29
  30 struct libtasn1_error_entry
  31 {
  32   const char *name;
  33   int number;
  34 };
  35 typedef struct libtasn1_error_entry libtasn1_error_entry;
  36
  37 static const libtasn1_error_entry error_algorithms[] = {
  38   LIBTASN1_ERROR_ENTRY (ASN1_SUCCESS),
  39   LIBTASN1_ERROR_ENTRY (ASN1_FILE_NOT_FOUND),
  40   LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_FOUND),
  41   LIBTASN1_ERROR_ENTRY (ASN1_IDENTIFIER_NOT_FOUND),
  42   LIBTASN1_ERROR_ENTRY (ASN1_DER_ERROR),
  43   LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_FOUND),
  44   LIBTASN1_ERROR_ENTRY (ASN1_GENERIC_ERROR),
  45   LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_VALID),
  46   LIBTASN1_ERROR_ENTRY (ASN1_TAG_ERROR),
  47   LIBTASN1_ERROR_ENTRY (ASN1_TAG_IMPLICIT),
  48   LIBTASN1_ERROR_ENTRY (ASN1_ERROR_TYPE_ANY),
  49   LIBTASN1_ERROR_ENTRY (ASN1_SYNTAX_ERROR),
  50   LIBTASN1_ERROR_ENTRY (ASN1_MEM_ERROR),
  51   LIBTASN1_ERROR_ENTRY (ASN1_MEM_ALLOC_ERROR),
  52   LIBTASN1_ERROR_ENTRY (ASN1_DER_OVERFLOW),
  53   LIBTASN1_ERROR_ENTRY (ASN1_NAME_TOO_LONG),
  54   LIBTASN1_ERROR_ENTRY (ASN1_ARRAY_ERROR),
  55   LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_EMPTY),
  56   {0, 0}
  57 };
  58
  59 /**
  60  * asn1_perror - prints a string to stderr with a description of an error
  61  * @error: is an error returned by a libtasn1 function.
  62  *
  63  * This function is like perror().  The only difference is that it
  64  * accepts an error returned by a libtasn1 function.
  65  *
  66  * This function replaces libtasn1_perror() in older libtasn1.
  67  *
  68  * Since: 1.6
  69  **/
  70 void
  71 asn1_perror (asn1_retCode error)
  72 {
  73   const char *str = asn1_strerror (error);
  74   fprintf (stderr, "LIBTASN1 ERROR: %s\n", str ? str : "(null)");
  75 }
  76
  77 /**
  78  * asn1_strerror - Returns a string with a description of an error
  79  * @error: is an error returned by a libtasn1 function.
  80  *
  81  * This function is similar to strerror.  The only difference is that
  82  * it accepts an error (number) returned by a libtasn1 function.
  83  *
  84  * This function replaces libtasn1_strerror() in older libtasn1.
  85  *
  86  * Returns: Pointer to static zero-terminated string describing error
  87  *   code.
  88  *
  89  * Since: 1.6
  90  **/
  91 const char *
  92 asn1_strerror (asn1_retCode error)
  93 {
  94   const libtasn1_error_entry *p;
  95
  96   for (p = error_algorithms; p->name != NULL; p++)
  97     if (p->number == error)
  98       return p->name + sizeof ("ASN1_") - 1;
  99
 100   return NULL;
 101 }
 102
 103 #ifndef ASN1_DISABLE_DEPRECATED
 104
 105 /* Compatibility mappings to preserve ABI. */
 106
 107 /**
 108  * libtasn1_perror - prints a string to stderr with a description of an error
 109  * @error: is an error returned by a libtasn1 function.
 110  *
 111  * This function is like perror(). The only difference is that it
 112  * accepts an error returned by a libtasn1 function.
 113  *
 114  * Deprecated: Use asn1_perror() instead.
 115  **/
 116 void
 117 libtasn1_perror (asn1_retCode error)
 118 {
 119   asn1_perror (error);
 120 }
 121
 122 /**
 123  * libtasn1_strerror - Returns a string with a description of an error
 124  * @error: is an error returned by a libtasn1 function.
 125  *
 126  * This function is similar to strerror.  The only difference is that
 127  * it accepts an error (number) returned by a libtasn1 function.
 128  *
 129  * Returns: Pointer to static zero-terminated string describing error
 130  *   code.
 131  *
 132  * Deprecated: Use asn1_strerror() instead.
 133  **/
 134 const char *
 135 libtasn1_strerror (asn1_retCode error)
 136 {
 137   return asn1_strerror (error);
 138 }
 139
 140 #endif