crypto/evp/names.c

   1 /*
   2  * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 #include <stdio.h>
  11 #include "internal/cryptlib.h"
  12 #include <openssl/evp.h>
  13 #include "internal/objects.h"
  14 #include <openssl/x509.h>
  15 #include "internal/evp_int.h"
  16
  17 int EVP_add_cipher(const EVP_CIPHER *c)
  18 {
  19     int r;
  20
  21     if (c == NULL)
  22         return 0;
  23
  24     r = OBJ_NAME_add(OBJ_nid2sn(c->nid), OBJ_NAME_TYPE_CIPHER_METH,
  25                      (const char *)c);
  26     if (r == 0)
  27         return 0;
  28     r = OBJ_NAME_add(OBJ_nid2ln(c->nid), OBJ_NAME_TYPE_CIPHER_METH,
  29                      (const char *)c);
  30     return r;
  31 }
  32
  33 int EVP_add_digest(const EVP_MD *md)
  34 {
  35     int r;
  36     const char *name;
  37
  38     name = OBJ_nid2sn(md->type);
  39     r = OBJ_NAME_add(name, OBJ_NAME_TYPE_MD_METH, (const char *)md);
  40     if (r == 0)
  41         return 0;
  42     r = OBJ_NAME_add(OBJ_nid2ln(md->type), OBJ_NAME_TYPE_MD_METH,
  43                      (const char *)md);
  44     if (r == 0)
  45         return 0;
  46
  47     if (md->pkey_type && md->type != md->pkey_type) {
  48         r = OBJ_NAME_add(OBJ_nid2sn(md->pkey_type),
  49                          OBJ_NAME_TYPE_MD_METH | OBJ_NAME_ALIAS, name);
  50         if (r == 0)
  51             return 0;
  52         r = OBJ_NAME_add(OBJ_nid2ln(md->pkey_type),
  53                          OBJ_NAME_TYPE_MD_METH | OBJ_NAME_ALIAS, name);
  54     }
  55     return r;
  56 }
  57
  58 int EVP_add_mac(const EVP_MAC *m)
  59 {
  60     int r;
  61
  62     if (m == NULL)
  63         return 0;
  64
  65     r = OBJ_NAME_add(OBJ_nid2sn(m->type), OBJ_NAME_TYPE_MAC_METH,
  66                      (const char *)m);
  67     if (r == 0)
  68         return 0;
  69     r = OBJ_NAME_add(OBJ_nid2ln(m->type), OBJ_NAME_TYPE_MAC_METH,
  70                      (const char *)m);
  71     return r;
  72 }
  73
  74 const EVP_CIPHER *EVP_get_cipherbyname(const char *name)
  75 {
  76     const EVP_CIPHER *cp;
  77
  78     if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL))
  79         return NULL;
  80
  81     cp = (const EVP_CIPHER *)OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
  82     return cp;
  83 }
  84
  85 const EVP_MD *EVP_get_digestbyname(const char *name)
  86 {
  87     const EVP_MD *cp;
  88
  89     if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL))
  90         return NULL;
  91
  92     cp = (const EVP_MD *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH);
  93     return cp;
  94 }
  95
  96 const EVP_MAC *EVP_get_macbyname(const char *name)
  97 {
  98     const EVP_MAC *mp;
  99
 100     if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_MACS, NULL))
 101         return NULL;
 102
 103     mp = (const EVP_MAC *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MAC_METH);
 104     return mp;
 105 }
 106
 107 void evp_cleanup_int(void)
 108 {
 109     OBJ_NAME_cleanup(OBJ_NAME_TYPE_MAC_METH);
 110     OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
 111     OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
 112     /*
 113      * The above calls will only clean out the contents of the name hash
 114      * table, but not the hash table itself.  The following line does that
 115      * part.  -- Richard Levitte
 116      */
 117     OBJ_NAME_cleanup(-1);
 118
 119     EVP_PBE_cleanup();
 120     OBJ_sigid_free();
 121
 122     evp_app_cleanup_int();
 123 }
 124
 125 struct doall_cipher {
 126     void *arg;
 127     void (*fn) (const EVP_CIPHER *ciph,
 128                 const char *from, const char *to, void *arg);
 129 };
 130
 131 static void do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
 132 {
 133     struct doall_cipher *dc = arg;
 134     if (nm->alias)
 135         dc->fn(NULL, nm->name, nm->data, dc->arg);
 136     else
 137         dc->fn((const EVP_CIPHER *)nm->data, nm->name, NULL, dc->arg);
 138 }
 139
 140 void EVP_CIPHER_do_all(void (*fn) (const EVP_CIPHER *ciph,
 141                                    const char *from, const char *to, void *x),
 142                        void *arg)
 143 {
 144     struct doall_cipher dc;
 145
 146     /* Ignore errors */
 147     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
 148
 149     dc.fn = fn;
 150     dc.arg = arg;
 151     OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 152 }
 153
 154 void EVP_CIPHER_do_all_sorted(void (*fn) (const EVP_CIPHER *ciph,
 155                                           const char *from, const char *to,
 156                                           void *x), void *arg)
 157 {
 158     struct doall_cipher dc;
 159
 160     /* Ignore errors */
 161     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
 162
 163     dc.fn = fn;
 164     dc.arg = arg;
 165     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 166 }
 167
 168 struct doall_md {
 169     void *arg;
 170     void (*fn) (const EVP_MD *ciph,
 171                 const char *from, const char *to, void *arg);
 172 };
 173
 174 static void do_all_md_fn(const OBJ_NAME *nm, void *arg)
 175 {
 176     struct doall_md *dc = arg;
 177     if (nm->alias)
 178         dc->fn(NULL, nm->name, nm->data, dc->arg);
 179     else
 180         dc->fn((const EVP_MD *)nm->data, nm->name, NULL, dc->arg);
 181 }
 182
 183 void EVP_MD_do_all(void (*fn) (const EVP_MD *md,
 184                                const char *from, const char *to, void *x),
 185                    void *arg)
 186 {
 187     struct doall_md dc;
 188
 189     /* Ignore errors */
 190     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
 191
 192     dc.fn = fn;
 193     dc.arg = arg;
 194     OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 195 }
 196
 197 void EVP_MD_do_all_sorted(void (*fn) (const EVP_MD *md,
 198                                       const char *from, const char *to,
 199                                       void *x), void *arg)
 200 {
 201     struct doall_md dc;
 202
 203     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
 204
 205     dc.fn = fn;
 206     dc.arg = arg;
 207     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 208 }
 209
 210 struct doall_mac {
 211     void *arg;
 212     void (*fn) (const EVP_MAC *ciph,
 213                 const char *from, const char *to, void *arg);
 214 };
 215
 216 static void do_all_mac_fn(const OBJ_NAME *nm, void *arg)
 217 {
 218     struct doall_mac *dc = arg;
 219
 220     if (nm->alias)
 221         dc->fn(NULL, nm->name, nm->data, dc->arg);
 222     else
 223         dc->fn((const EVP_MAC *)nm->data, nm->name, NULL, dc->arg);
 224 }
 225
 226 void EVP_MAC_do_all(void (*fn)
 227                     (const EVP_MAC *ciph, const char *from, const char *to,
 228                      void *x), void *arg)
 229 {
 230     struct doall_mac dc;
 231
 232     /* Ignore errors */
 233     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_MACS, NULL);
 234
 235     dc.fn = fn;
 236     dc.arg = arg;
 237     OBJ_NAME_do_all(OBJ_NAME_TYPE_MAC_METH, do_all_mac_fn, &dc);
 238 }
 239
 240 void EVP_MAC_do_all_sorted(void (*fn)
 241                            (const EVP_MAC *ciph, const char *from,
 242                             const char *to, void *x), void *arg)
 243 {
 244     struct doall_mac dc;
 245
 246     /* Ignore errors */
 247     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_MACS, NULL);
 248
 249     dc.fn = fn;
 250     dc.arg = arg;
 251     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MAC_METH, do_all_mac_fn, &dc);
 252 }
 253