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 extern int obj_cleanup_defer;
  66 extern void check_defer(int nid);
  67
  68 int EVP_add_cipher(const EVP_CIPHER *c)
  69         {
  70         int r;
  71
  72         r=OBJ_NAME_add(OBJ_nid2sn(c->nid),OBJ_NAME_TYPE_CIPHER_METH,(const char *)c);
  73         if (r == 0) return(0);
  74         check_defer(c->nid);
  75         r=OBJ_NAME_add(OBJ_nid2ln(c->nid),OBJ_NAME_TYPE_CIPHER_METH,(const char *)c);
  76         return(r);
  77         }
  78
  79 int EVP_add_digest(const EVP_MD *md)
  80         {
  81         int r;
  82         const char *name;
  83
  84         name=OBJ_nid2sn(md->type);
  85         r=OBJ_NAME_add(name,OBJ_NAME_TYPE_MD_METH,(const char *)md);
  86         if (r == 0) return(0);
  87         check_defer(md->type);
  88         r=OBJ_NAME_add(OBJ_nid2ln(md->type),OBJ_NAME_TYPE_MD_METH,(const char *)md);
  89         if (r == 0) return(0);
  90
  91         if (md->type != md->pkey_type)
  92                 {
  93                 r=OBJ_NAME_add(OBJ_nid2sn(md->pkey_type),
  94                         OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,name);
  95                 if (r == 0) return(0);
  96                 check_defer(md->pkey_type);
  97                 r=OBJ_NAME_add(OBJ_nid2ln(md->pkey_type),
  98                         OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,name);
  99                 }
 100         return(r);
 101         }
 102
 103 const EVP_CIPHER *EVP_get_cipherbyname(const char *name)
 104         {
 105         const EVP_CIPHER *cp;
 106
 107         cp=(const EVP_CIPHER *)OBJ_NAME_get(name,OBJ_NAME_TYPE_CIPHER_METH);
 108         return(cp);
 109         }
 110
 111 const EVP_MD *EVP_get_digestbyname(const char *name)
 112         {
 113         const EVP_MD *cp;
 114
 115         cp=(const EVP_MD *)OBJ_NAME_get(name,OBJ_NAME_TYPE_MD_METH);
 116         return(cp);
 117         }
 118
 119 void EVP_cleanup(void)
 120         {
 121         OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
 122         OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
 123         /* The above calls will only clean out the contents of the name
 124            hash table, but not the hash table itself.  The following line
 125            does that part.  -- Richard Levitte */
 126         OBJ_NAME_cleanup(-1);
 127
 128         EVP_PBE_cleanup();
 129         if (obj_cleanup_defer == 2)
 130                 {
 131                 obj_cleanup_defer = 0;
 132                 OBJ_cleanup();
 133                 }
 134         }