libdane/dane-params.c

   1 /*
   2  * Copyright (C) 2012 KU Leuven
   3  *
   4  * Author: Nikos Mavrogiannopoulos
   5  *
   6  * This file is part of libdane.
   7  *
   8  * libdane is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>
  20  *
  21  */
  22
  23 #include <config.h>
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <errno.h>
  29 #include <arpa/inet.h>
  30 #include <unbound.h>
  31 #include <gnutls/dane.h>
  32 #include <gnutls/x509.h>
  33 #include <gnutls/abstract.h>
  34
  35 typedef struct cert_type_entry
  36 {
  37   const char* name;
  38   dane_cert_type_t type;
  39 } cert_type_entry;
  40
  41 static const cert_type_entry dane_cert_types[] =
  42 {
  43   {"X.509", DANE_CERT_X509},
  44   {"SubjectPublicKeyInfo", DANE_CERT_PK},
  45   {NULL, 0}
  46 };
  47
  48 typedef struct match_type_entry
  49 {
  50   const char* name;
  51   dane_match_type_t type;
  52 } match_type_entry;
  53
  54 static const match_type_entry dane_match_types[] =
  55 {
  56   {"Exact match", DANE_MATCH_EXACT},
  57   {"SHA2-256 hash", DANE_MATCH_SHA2_256},
  58   {"SHA2-512 hash", DANE_MATCH_SHA2_512},
  59   {NULL, 0}
  60 };
  61
  62 typedef struct cert_usage_entry
  63 {
  64   const char* name;
  65   dane_cert_usage_t usage;
  66 } cert_usage_entry;
  67
  68 static const cert_usage_entry dane_cert_usages[] =
  69 {
  70   {"CA", DANE_CERT_USAGE_CA},
  71   {"End-entity", DANE_CERT_USAGE_EE},
  72   {"Local CA", DANE_CERT_USAGE_LOCAL_CA},
  73   {"Local end-entity", DANE_CERT_USAGE_LOCAL_EE},
  74   {NULL, 0}
  75 };
  76
  77
  78
  79 /**
  80  * dane_cert_type_name:
  81  * @type: is a DANE match type
  82  *
  83  * Convert a #dane_cert_type_t value to a string.
  84  *
  85  * Returns: a string that contains the name of the specified
  86  *   type, or %NULL.
  87  **/
  88 const char* dane_cert_type_name(dane_cert_type_t type)
  89 {
  90 const cert_type_entry* e = dane_cert_types;
  91
  92   while(e->name != NULL)
  93     {
  94       if (e->type == type)
  95         return e->name;
  96       e++;
  97     }
  98
  99   return NULL;
 100 }
 101
 102 /**
 103  * dane_match_type_name:
 104  * @type: is a DANE match type
 105  *
 106  * Convert a #dane_match_type_t value to a string.
 107  *
 108  * Returns: a string that contains the name of the specified
 109  *   type, or %NULL.
 110  **/
 111 const char* dane_match_type_name(dane_match_type_t type)
 112 {
 113 const match_type_entry* e = dane_match_types;
 114
 115   while(e->name != NULL)
 116     {
 117       if (e->type == type)
 118         return e->name;
 119       e++;
 120     }
 121
 122   return NULL;
 123 }
 124
 125 /**
 126  * dane_cert_usage_name:
 127  * @type: is a DANE match type
 128  *
 129  * Convert a #dane_cert_usage_t value to a string.
 130  *
 131  * Returns: a string that contains the name of the specified
 132  *   type, or %NULL.
 133  **/
 134 const char* dane_cert_usage_name(dane_cert_usage_t usage)
 135 {
 136 const cert_usage_entry* e = dane_cert_usages;
 137
 138   while(e->name != NULL)
 139     {
 140       if (e->usage == usage)
 141         return e->name;
 142       e++;
 143     }
 144
 145   return NULL;
 146
 147 }