1 /* crypto/evp/names.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
64 typedef struct aliases_st {
66 /* This must be the last field becaue I will allocate things
67 * so they go off the end of it */
71 static STACK /* ALIASES */ *aliases=NULL;
72 static STACK /* EVP_CIPHERS */ *ciphers=NULL;
73 static STACK /* EVP_MD */ *digests=NULL;
75 static int cipher_nid_cmp(a,b)
77 { return((*a)->nid - (*b)->nid); }
79 static int digest_type_cmp(a,b)
81 { return((*a)->pkey_type - (*b)->pkey_type); }
90 ciphers=sk_new(cipher_nid_cmp);
91 if (ciphers == NULL) return(0);
93 if ((i=sk_find(ciphers,(char *)c)) >= 0)
95 if (sk_value(ciphers,i) == (char *)c)
99 return(sk_push(ciphers,(char *)c));
102 int EVP_add_digest(md)
110 digests=sk_new(digest_type_cmp);
111 if (digests == NULL) return(0);
113 if ((i=sk_find(digests,(char *)md)) >= 0)
115 if (sk_value(digests,i) == (char *)md)
117 sk_delete(digests,i);
119 if (md->type != md->pkey_type)
121 n=OBJ_nid2sn(md->pkey_type);
122 EVP_add_alias(n,OBJ_nid2sn(md->type));
123 EVP_add_alias(n,OBJ_nid2ln(md->type));
125 sk_push(digests,(char *)md);
129 static int alias_cmp(a,b)
132 return(strcmp((*a)->alias,(*b)->alias));
135 int EVP_add_alias(name,aname)
143 if ((name == NULL) || (aname == NULL)) return(0);
146 i=sizeof(ALIASES)+l1+l2;
147 if ((a=(ALIASES *)Malloc(i)) == NULL)
149 strcpy(a->name,name);
156 aliases=sk_new(alias_cmp);
157 if (aliases == NULL) goto err;
160 if ((i=sk_find(aliases,(char *)a)) >= 0)
162 Free(sk_delete(aliases,i));
164 if (!sk_push(aliases,(char *)a)) goto err;
170 int EVP_delete_alias(name)
179 if ((i=sk_find(aliases,(char *)&a)) >= 0)
181 Free(sk_delete(aliases,i));
188 EVP_CIPHER *EVP_get_cipherbyname(name)
195 if (ciphers == NULL) return(NULL);
198 if (num-- <= 0) return(NULL);
202 i=sk_find(aliases,(char *)&a);
205 ap=(ALIASES *)sk_value(aliases,i);
211 nid=OBJ_txt2nid(name);
212 if (nid == NID_undef) return(NULL);
214 i=sk_find(ciphers,(char *)&c);
217 cp=(EVP_CIPHER *)sk_value(ciphers,i);
225 EVP_MD *EVP_get_digestbyname(name)
232 if (digests == NULL) return(NULL);
236 if (num-- <= 0) return(NULL);
241 i=sk_find(aliases,(char *)&a);
244 ap=(ALIASES *)sk_value(aliases,i);
250 nid=OBJ_txt2nid(name);
251 if (nid == NID_undef) return(NULL);
253 i=sk_find(digests,(char *)&c);
256 cp=(EVP_MD *)sk_value(digests,i);
270 for (i=0; i<sk_num(aliases); i++)
271 Free(sk_value(aliases,i));