crypto/evp/names.c

   1 /*
   2  * Copyright 1995-2016 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 const EVP_CIPHER *EVP_get_cipherbyname(const char *name)
  59 {
  60     const EVP_CIPHER *cp;
  61
  62     if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL))
  63         return NULL;
  64
  65     cp = (const EVP_CIPHER *)OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
  66     return (cp);
  67 }
  68
  69 const EVP_MD *EVP_get_digestbyname(const char *name)
  70 {
  71     const EVP_MD *cp;
  72
  73     if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL))
  74         return NULL;
  75
  76     cp = (const EVP_MD *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH);
  77     return (cp);
  78 }
  79
  80 void evp_cleanup_int(void)
  81 {
  82     OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
  83     OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
  84     /*
  85      * The above calls will only clean out the contents of the name hash
  86      * table, but not the hash table itself.  The following line does that
  87      * part.  -- Richard Levitte
  88      */
  89     OBJ_NAME_cleanup(-1);
  90
  91     EVP_PBE_cleanup();
  92     OBJ_sigid_free();
  93 }
  94
  95 struct doall_cipher {
  96     void *arg;
  97     void (*fn) (const EVP_CIPHER *ciph,
  98                 const char *from, const char *to, void *arg);
  99 };
 100
 101 static void do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
 102 {
 103     struct doall_cipher *dc = arg;
 104     if (nm->alias)
 105         dc->fn(NULL, nm->name, nm->data, dc->arg);
 106     else
 107         dc->fn((const EVP_CIPHER *)nm->data, nm->name, NULL, dc->arg);
 108 }
 109
 110 void EVP_CIPHER_do_all(void (*fn) (const EVP_CIPHER *ciph,
 111                                    const char *from, const char *to, void *x),
 112                        void *arg)
 113 {
 114     struct doall_cipher dc;
 115
 116     /* Ignore errors */
 117     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
 118
 119     dc.fn = fn;
 120     dc.arg = arg;
 121     OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 122 }
 123
 124 void EVP_CIPHER_do_all_sorted(void (*fn) (const EVP_CIPHER *ciph,
 125                                           const char *from, const char *to,
 126                                           void *x), void *arg)
 127 {
 128     struct doall_cipher dc;
 129
 130     /* Ignore errors */
 131     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
 132
 133     dc.fn = fn;
 134     dc.arg = arg;
 135     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 136 }
 137
 138 struct doall_md {
 139     void *arg;
 140     void (*fn) (const EVP_MD *ciph,
 141                 const char *from, const char *to, void *arg);
 142 };
 143
 144 static void do_all_md_fn(const OBJ_NAME *nm, void *arg)
 145 {
 146     struct doall_md *dc = arg;
 147     if (nm->alias)
 148         dc->fn(NULL, nm->name, nm->data, dc->arg);
 149     else
 150         dc->fn((const EVP_MD *)nm->data, nm->name, NULL, dc->arg);
 151 }
 152
 153 void EVP_MD_do_all(void (*fn) (const EVP_MD *md,
 154                                const char *from, const char *to, void *x),
 155                    void *arg)
 156 {
 157     struct doall_md dc;
 158
 159     /* Ignore errors */
 160     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
 161
 162     dc.fn = fn;
 163     dc.arg = arg;
 164     OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 165 }
 166
 167 void EVP_MD_do_all_sorted(void (*fn) (const EVP_MD *md,
 168                                       const char *from, const char *to,
 169                                       void *x), void *arg)
 170 {
 171     struct doall_md dc;
 172
 173     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
 174
 175     dc.fn = fn;
 176     dc.arg = arg;
 177     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 178 }