1 /* $OpenBSD: names.c,v 1.15 2021/12/12 21:30:13 tb Exp $ */
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
61 #include <openssl/evp.h>
62 #include <openssl/objects.h>
63 #include <openssl/x509.h>
64
65 #include "evp_locl.h"
66
67 int
EVP_add_cipher(const EVP_CIPHER * c)68 EVP_add_cipher(const EVP_CIPHER *c)
69 {
70 int r;
71
72 if (c == NULL)
73 return 0;
74
75 r = OBJ_NAME_add(OBJ_nid2sn(c->nid), OBJ_NAME_TYPE_CIPHER_METH,
76 (const char *)c);
77 if (r == 0)
78 return (0);
79 check_defer(c->nid);
80 r = OBJ_NAME_add(OBJ_nid2ln(c->nid), OBJ_NAME_TYPE_CIPHER_METH,
81 (const char *)c);
82 return (r);
83 }
84
85 int
EVP_add_digest(const EVP_MD * md)86 EVP_add_digest(const EVP_MD *md)
87 {
88 int r;
89 const char *name;
90
91 name = OBJ_nid2sn(md->type);
92 r = OBJ_NAME_add(name, OBJ_NAME_TYPE_MD_METH, (const char *)md);
93 if (r == 0)
94 return (0);
95 check_defer(md->type);
96 r = OBJ_NAME_add(OBJ_nid2ln(md->type), OBJ_NAME_TYPE_MD_METH,
97 (const char *)md);
98 if (r == 0)
99 return (0);
100
101 if (md->pkey_type && md->type != md->pkey_type) {
102 r = OBJ_NAME_add(OBJ_nid2sn(md->pkey_type),
103 OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS, name);
104 if (r == 0)
105 return (0);
106 check_defer(md->pkey_type);
107 r = OBJ_NAME_add(OBJ_nid2ln(md->pkey_type),
108 OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS, name);
109 }
110 return (r);
111 }
112
113 const EVP_CIPHER *
EVP_get_cipherbyname(const char * name)114 EVP_get_cipherbyname(const char *name)
115 {
116 const EVP_CIPHER *cp;
117
118 if (!OPENSSL_init_crypto(0, NULL))
119 return NULL;
120
121 cp = (const EVP_CIPHER *)OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
122 return (cp);
123 }
124
125 const EVP_MD *
EVP_get_digestbyname(const char * name)126 EVP_get_digestbyname(const char *name)
127 {
128 const EVP_MD *cp;
129
130 if (!OPENSSL_init_crypto(0, NULL))
131 return NULL;
132
133 cp = (const EVP_MD *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH);
134 return (cp);
135 }
136
137 void
EVP_cleanup(void)138 EVP_cleanup(void)
139 {
140 OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
141 OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
142 /* The above calls will only clean out the contents of the name
143 hash table, but not the hash table itself. The following line
144 does that part. -- Richard Levitte */
145 OBJ_NAME_cleanup(-1);
146
147 EVP_PBE_cleanup();
148 if (obj_cleanup_defer == 2) {
149 obj_cleanup_defer = 0;
150 OBJ_cleanup();
151 }
152 OBJ_sigid_free();
153 }
154
155 struct doall_cipher {
156 void *arg;
157 void (*fn)(const EVP_CIPHER *ciph, const char *from, const char *to,
158 void *arg);
159 };
160
161 static void
do_all_cipher_fn(const OBJ_NAME * nm,void * arg)162 do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
163 {
164 struct doall_cipher *dc = arg;
165
166 if (nm->alias)
167 dc->fn(NULL, nm->name, nm->data, dc->arg);
168 else
169 dc->fn((const EVP_CIPHER *)nm->data, nm->name, NULL, dc->arg);
170 }
171
172 void
EVP_CIPHER_do_all(void (* fn)(const EVP_CIPHER * ciph,const char * from,const char * to,void * x),void * arg)173 EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph, const char *from,
174 const char *to, void *x), void *arg)
175 {
176 struct doall_cipher dc;
177
178 /* Prayer and clean living lets you ignore errors, OpenSSL style */
179 (void) OPENSSL_init_crypto(0, NULL);
180
181 dc.fn = fn;
182 dc.arg = arg;
183 OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
184 }
185
186 void
EVP_CIPHER_do_all_sorted(void (* fn)(const EVP_CIPHER * ciph,const char * from,const char * to,void * x),void * arg)187 EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph, const char *from,
188 const char *to, void *x), void *arg)
189 {
190 struct doall_cipher dc;
191
192 /* Prayer and clean living lets you ignore errors, OpenSSL style */
193 (void) OPENSSL_init_crypto(0, NULL);
194
195 dc.fn = fn;
196 dc.arg = arg;
197 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
198 do_all_cipher_fn, &dc);
199 }
200
201 struct doall_md {
202 void *arg;
203 void (*fn)(const EVP_MD *ciph, const char *from, const char *to,
204 void *arg);
205 };
206
207 static void
do_all_md_fn(const OBJ_NAME * nm,void * arg)208 do_all_md_fn(const OBJ_NAME *nm, void *arg)
209 {
210 struct doall_md *dc = arg;
211
212 if (nm->alias)
213 dc->fn(NULL, nm->name, nm->data, dc->arg);
214 else
215 dc->fn((const EVP_MD *)nm->data, nm->name, NULL, dc->arg);
216 }
217
218 void
EVP_MD_do_all(void (* fn)(const EVP_MD * md,const char * from,const char * to,void * x),void * arg)219 EVP_MD_do_all(void (*fn)(const EVP_MD *md, const char *from, const char *to,
220 void *x), void *arg)
221 {
222 struct doall_md dc;
223
224 /* Prayer and clean living lets you ignore errors, OpenSSL style */
225 (void) OPENSSL_init_crypto(0, NULL);
226
227 dc.fn = fn;
228 dc.arg = arg;
229 OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
230 }
231
232 void
EVP_MD_do_all_sorted(void (* fn)(const EVP_MD * md,const char * from,const char * to,void * x),void * arg)233 EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *md,
234 const char *from, const char *to, void *x), void *arg)
235 {
236 struct doall_md dc;
237
238 /* Prayer and clean living lets you ignore errors, OpenSSL style */
239 (void) OPENSSL_init_crypto(0, NULL);
240
241 dc.fn = fn;
242 dc.arg = arg;
243 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
244 }
245