include/openssl/objects.h

   1 /*
   2  * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef HEADER_OBJECTS_H
  11 # define HEADER_OBJECTS_H
  12
  13 # include <openssl/obj_mac.h>
  14 # include <openssl/bio.h>
  15 # include <openssl/asn1.h>
  16 # include <openssl/objectserr.h>
  17
  18 # define OBJ_NAME_TYPE_UNDEF             0x00
  19 # define OBJ_NAME_TYPE_MD_METH           0x01
  20 # define OBJ_NAME_TYPE_CIPHER_METH       0x02
  21 # define OBJ_NAME_TYPE_PKEY_METH         0x03
  22 # define OBJ_NAME_TYPE_COMP_METH         0x04
  23 # define OBJ_NAME_TYPE_MAC_METH          0x05
  24 # define OBJ_NAME_TYPE_KDF_METH          0x06
  25 # define OBJ_NAME_TYPE_NUM               0x07
  26
  27 # define OBJ_NAME_ALIAS                  0x8000
  28
  29 # define OBJ_BSEARCH_VALUE_ON_NOMATCH            0x01
  30 # define OBJ_BSEARCH_FIRST_VALUE_ON_MATCH        0x02
  31
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 typedef struct obj_name_st {
  38     int type;
  39     int alias;
  40     const char *name;
  41     const char *data;
  42 } OBJ_NAME;
  43
  44 # define         OBJ_create_and_add_object(a,b,c) OBJ_create(a,b,c)
  45
  46 int OBJ_NAME_init(void);
  47 int OBJ_NAME_new_index(unsigned long (*hash_func) (const char *),
  48                        int (*cmp_func) (const char *, const char *),
  49                        void (*free_func) (const char *, int, const char *));
  50 const char *OBJ_NAME_get(const char *name, int type);
  51 int OBJ_NAME_add(const char *name, int type, const char *data);
  52 int OBJ_NAME_remove(const char *name, int type);
  53 void OBJ_NAME_cleanup(int type); /* -1 for everything */
  54 void OBJ_NAME_do_all(int type, void (*fn) (const OBJ_NAME *, void *arg),
  55                      void *arg);
  56 void OBJ_NAME_do_all_sorted(int type,
  57                             void (*fn) (const OBJ_NAME *, void *arg),
  58                             void *arg);
  59
  60 DECLARE_ASN1_DUP_FUNCTION_name(ASN1_OBJECT, OBJ)
  61 ASN1_OBJECT *OBJ_nid2obj(int n);
  62 const char *OBJ_nid2ln(int n);
  63 const char *OBJ_nid2sn(int n);
  64 int OBJ_obj2nid(const ASN1_OBJECT *o);
  65 ASN1_OBJECT *OBJ_txt2obj(const char *s, int no_name);
  66 int OBJ_obj2txt(char *buf, int buf_len, const ASN1_OBJECT *a, int no_name);
  67 int OBJ_txt2nid(const char *s);
  68 int OBJ_ln2nid(const char *s);
  69 int OBJ_sn2nid(const char *s);
  70 int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b);
  71 const void *OBJ_bsearch_(const void *key, const void *base, int num, int size,
  72                          int (*cmp) (const void *, const void *));
  73 const void *OBJ_bsearch_ex_(const void *key, const void *base, int num,
  74                             int size,
  75                             int (*cmp) (const void *, const void *),
  76                             int flags);
  77
  78 # define _DECLARE_OBJ_BSEARCH_CMP_FN(scope, type1, type2, nm)    \
  79   static int nm##_cmp_BSEARCH_CMP_FN(const void *, const void *); \
  80   static int nm##_cmp(type1 const *, type2 const *); \
  81   scope type2 * OBJ_bsearch_##nm(type1 *key, type2 const *base, int num)
  82
  83 # define DECLARE_OBJ_BSEARCH_CMP_FN(type1, type2, cmp)   \
  84   _DECLARE_OBJ_BSEARCH_CMP_FN(static, type1, type2, cmp)
  85 # define DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(type1, type2, nm)     \
  86   type2 * OBJ_bsearch_##nm(type1 *key, type2 const *base, int num)
  87
  88 /*-
  89  * Unsolved problem: if a type is actually a pointer type, like
  90  * nid_triple is, then its impossible to get a const where you need
  91  * it. Consider:
  92  *
  93  * typedef int nid_triple[3];
  94  * const void *a_;
  95  * const nid_triple const *a = a_;
  96  *
  97  * The assignment discards a const because what you really want is:
  98  *
  99  * const int const * const *a = a_;
 100  *
 101  * But if you do that, you lose the fact that a is an array of 3 ints,
 102  * which breaks comparison functions.
 103  *
 104  * Thus we end up having to cast, sadly, or unpack the
 105  * declarations. Or, as I finally did in this case, declare nid_triple
 106  * to be a struct, which it should have been in the first place.
 107  *
 108  * Ben, August 2008.
 109  *
 110  * Also, strictly speaking not all types need be const, but handling
 111  * the non-constness means a lot of complication, and in practice
 112  * comparison routines do always not touch their arguments.
 113  */
 114
 115 # define IMPLEMENT_OBJ_BSEARCH_CMP_FN(type1, type2, nm)  \
 116   static int nm##_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)    \
 117       { \
 118       type1 const *a = a_; \
 119       type2 const *b = b_; \
 120       return nm##_cmp(a,b); \
 121       } \
 122   static type2 *OBJ_bsearch_##nm(type1 *key, type2 const *base, int num) \
 123       { \
 124       return (type2 *)OBJ_bsearch_(key, base, num, sizeof(type2), \
 125                                         nm##_cmp_BSEARCH_CMP_FN); \
 126       } \
 127       extern void dummy_prototype(void)
 128
 129 # define IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(type1, type2, nm)   \
 130   static int nm##_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)    \
 131       { \
 132       type1 const *a = a_; \
 133       type2 const *b = b_; \
 134       return nm##_cmp(a,b); \
 135       } \
 136   type2 *OBJ_bsearch_##nm(type1 *key, type2 const *base, int num) \
 137       { \
 138       return (type2 *)OBJ_bsearch_(key, base, num, sizeof(type2), \
 139                                         nm##_cmp_BSEARCH_CMP_FN); \
 140       } \
 141       extern void dummy_prototype(void)
 142
 143 # define OBJ_bsearch(type1,key,type2,base,num,cmp)                              \
 144   ((type2 *)OBJ_bsearch_(CHECKED_PTR_OF(type1,key),CHECKED_PTR_OF(type2,base), \
 145                          num,sizeof(type2),                             \
 146                          ((void)CHECKED_PTR_OF(type1,cmp##_type_1),     \
 147                           (void)CHECKED_PTR_OF(type2,cmp##_type_2),     \
 148                           cmp##_BSEARCH_CMP_FN)))
 149
 150 # define OBJ_bsearch_ex(type1,key,type2,base,num,cmp,flags)                      \
 151   ((type2 *)OBJ_bsearch_ex_(CHECKED_PTR_OF(type1,key),CHECKED_PTR_OF(type2,base), \
 152                          num,sizeof(type2),                             \
 153                          ((void)CHECKED_PTR_OF(type1,cmp##_type_1),     \
 154                           (void)type_2=CHECKED_PTR_OF(type2,cmp##_type_2), \
 155                           cmp##_BSEARCH_CMP_FN)),flags)
 156
 157 int OBJ_new_nid(int num);
 158 int OBJ_add_object(const ASN1_OBJECT *obj);
 159 int OBJ_create(const char *oid, const char *sn, const char *ln);
 160 #if !OPENSSL_API_1_1_0
 161 # define OBJ_cleanup() while(0) continue
 162 #endif
 163 int OBJ_create_objects(BIO *in);
 164
 165 size_t OBJ_length(const ASN1_OBJECT *obj);
 166 const unsigned char *OBJ_get0_data(const ASN1_OBJECT *obj);
 167
 168 int OBJ_find_sigid_algs(int signid, int *pdig_nid, int *ppkey_nid);
 169 int OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid);
 170 int OBJ_add_sigid(int signid, int dig_id, int pkey_id);
 171 void OBJ_sigid_free(void);
 172
 173
 174 # ifdef  __cplusplus
 175 }
 176 # endif
 177 #endif