crypto/evp/names.c

   1 /* crypto/evp/names.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include <openssl/evp.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/x509.h>
  64
  65 int EVP_add_cipher(const EVP_CIPHER *c)
  66         {
  67         int r;
  68
  69         r=OBJ_NAME_add(OBJ_nid2sn(c->nid),OBJ_NAME_TYPE_CIPHER_METH,(const char *)c);
  70         if (r == 0) return(0);
  71         check_defer(c->nid);
  72         r=OBJ_NAME_add(OBJ_nid2ln(c->nid),OBJ_NAME_TYPE_CIPHER_METH,(const char *)c);
  73         return(r);
  74         }
  75
  76
  77 int EVP_add_digest(const EVP_MD *md)
  78         {
  79         int r;
  80         const char *name;
  81
  82         name=OBJ_nid2sn(md->type);
  83         r=OBJ_NAME_add(name,OBJ_NAME_TYPE_MD_METH,(const char *)md);
  84         if (r == 0) return(0);
  85         check_defer(md->type);
  86         r=OBJ_NAME_add(OBJ_nid2ln(md->type),OBJ_NAME_TYPE_MD_METH,(const char *)md);
  87         if (r == 0) return(0);
  88
  89         if (md->type != md->pkey_type)
  90                 {
  91                 r=OBJ_NAME_add(OBJ_nid2sn(md->pkey_type),
  92                         OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,name);
  93                 if (r == 0) return(0);
  94                 check_defer(md->pkey_type);
  95                 r=OBJ_NAME_add(OBJ_nid2ln(md->pkey_type),
  96                         OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,name);
  97                 }
  98         return(r);
  99         }
 100
 101 const EVP_CIPHER *EVP_get_cipherbyname(const char *name)
 102         {
 103         const EVP_CIPHER *cp;
 104
 105         cp=(const EVP_CIPHER *)OBJ_NAME_get(name,OBJ_NAME_TYPE_CIPHER_METH);
 106         return(cp);
 107         }
 108
 109 const EVP_MD *EVP_get_digestbyname(const char *name)
 110         {
 111         const EVP_MD *cp;
 112
 113         cp=(const EVP_MD *)OBJ_NAME_get(name,OBJ_NAME_TYPE_MD_METH);
 114         return(cp);
 115         }
 116
 117 void EVP_cleanup(void)
 118         {
 119         OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
 120         OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
 121         /* The above calls will only clean out the contents of the name
 122            hash table, but not the hash table itself.  The following line
 123            does that part.  -- Richard Levitte */
 124         OBJ_NAME_cleanup(-1);
 125
 126         EVP_PBE_cleanup();
 127         if (obj_cleanup_defer == 2)
 128                 {
 129                 obj_cleanup_defer = 0;
 130                 OBJ_cleanup();
 131                 }
 132         OBJ_sigid_free();
 133         }
 134
 135 struct doall_cipher
 136         {
 137         void *arg;
 138         void (*fn)(const EVP_CIPHER *ciph,
 139                         const char *from, const char *to, void *arg);
 140         };
 141
 142 static void do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
 143         {
 144         struct doall_cipher *dc = arg;
 145         if (nm->alias)
 146                 dc->fn(NULL, nm->name, nm->data, dc->arg);
 147         else
 148                 dc->fn((const EVP_CIPHER *)nm->data, NULL, NULL, dc->arg);
 149         }
 150
 151 void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph,
 152                 const char *from, const char *to, void *x), void *arg)
 153         {
 154         struct doall_cipher dc;
 155         dc.fn = fn;
 156         dc.arg = arg;
 157         OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
 158         }
 159
 160 void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
 161                 const char *from, const char *to, void *x), void *arg)
 162         {
 163         struct doall_cipher dc;
 164         dc.fn = fn;
 165         dc.arg = arg;
 166         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn,&dc);
 167         }
 168
 169 struct doall_md
 170         {
 171         void *arg;
 172         void (*fn)(const EVP_MD *ciph,
 173                         const char *from, const char *to, void *arg);
 174         };
 175
 176 static void do_all_md_fn(const OBJ_NAME *nm, void *arg)
 177         {
 178         struct doall_md *dc = arg;
 179         if (nm->alias)
 180                 dc->fn(NULL, nm->name, nm->data, dc->arg);
 181         else
 182                 dc->fn((const EVP_MD *)nm->data, NULL, NULL, dc->arg);
 183         }
 184
 185 void EVP_MD_do_all(void (*fn)(const EVP_MD *md,
 186                 const char *from, const char *to, void *x), void *arg)
 187         {
 188         struct doall_md dc;
 189         dc.fn = fn;
 190         dc.arg = arg;
 191         OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 192         }
 193
 194 void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *md,
 195                 const char *from, const char *to, void *x), void *arg)
 196         {
 197         struct doall_md dc;
 198         dc.fn = fn;
 199         dc.arg = arg;
 200         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 201         }