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     evp_app_cleanup_int();
  95 }
  96
  97 struct doall_cipher {
  98     void *arg;
  99     void (*fn) (const EVP_CIPHER *ciph,
 100                 const char *from, const char *to, void *arg);
 101 };
 102
 103 static void do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
 104 {
 105     struct doall_cipher *dc = arg;
 106     if (nm->alias)
 107         dc->fn(NULL, nm->name, nm->data, dc->arg);
 108     else
 109         dc->fn((const EVP_CIPHER *)nm->data, nm->name, NULL, dc->arg);
 110 }
 111
 112 void EVP_CIPHER_do_all(void (*fn) (const EVP_CIPHER *ciph,
 113                                    const char *from, const char *to, void *x),
 114                        void *arg)
 115 {
 116     struct doall_cipher dc;
 117
 118     /* Ignore errors */
 119     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
 120
 121     dc.fn = fn;
 122     dc.arg = arg;
 123     OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 124 }
 125
 126 void EVP_CIPHER_do_all_sorted(void (*fn) (const EVP_CIPHER *ciph,
 127                                           const char *from, const char *to,
 128                                           void *x), void *arg)
 129 {
 130     struct doall_cipher dc;
 131
 132     /* Ignore errors */
 133     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
 134
 135     dc.fn = fn;
 136     dc.arg = arg;
 137     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 138 }
 139
 140 struct doall_md {
 141     void *arg;
 142     void (*fn) (const EVP_MD *ciph,
 143                 const char *from, const char *to, void *arg);
 144 };
 145
 146 static void do_all_md_fn(const OBJ_NAME *nm, void *arg)
 147 {
 148     struct doall_md *dc = arg;
 149     if (nm->alias)
 150         dc->fn(NULL, nm->name, nm->data, dc->arg);
 151     else
 152         dc->fn((const EVP_MD *)nm->data, nm->name, NULL, dc->arg);
 153 }
 154
 155 void EVP_MD_do_all(void (*fn) (const EVP_MD *md,
 156                                const char *from, const char *to, void *x),
 157                    void *arg)
 158 {
 159     struct doall_md dc;
 160
 161     /* Ignore errors */
 162     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
 163
 164     dc.fn = fn;
 165     dc.arg = arg;
 166     OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 167 }
 168
 169 void EVP_MD_do_all_sorted(void (*fn) (const EVP_MD *md,
 170                                       const char *from, const char *to,
 171                                       void *x), void *arg)
 172 {
 173     struct doall_md dc;
 174
 175     OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
 176
 177     dc.fn = fn;
 178     dc.arg = arg;
 179     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 180 }