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 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 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 * 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 * 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 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 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 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 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 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 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 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