1 /* $OpenBSD: names.c,v 1.14 2018/03/17 16:20:01 beck 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 int 66 EVP_add_cipher(const EVP_CIPHER *c) 67 { 68 int r; 69 70 if (c == NULL) 71 return 0; 72 73 r = OBJ_NAME_add(OBJ_nid2sn(c->nid), OBJ_NAME_TYPE_CIPHER_METH, 74 (const char *)c); 75 if (r == 0) 76 return (0); 77 check_defer(c->nid); 78 r = OBJ_NAME_add(OBJ_nid2ln(c->nid), OBJ_NAME_TYPE_CIPHER_METH, 79 (const char *)c); 80 return (r); 81 } 82 83 int 84 EVP_add_digest(const EVP_MD *md) 85 { 86 int r; 87 const char *name; 88 89 name = OBJ_nid2sn(md->type); 90 r = OBJ_NAME_add(name, OBJ_NAME_TYPE_MD_METH, (const char *)md); 91 if (r == 0) 92 return (0); 93 check_defer(md->type); 94 r = OBJ_NAME_add(OBJ_nid2ln(md->type), OBJ_NAME_TYPE_MD_METH, 95 (const char *)md); 96 if (r == 0) 97 return (0); 98 99 if (md->pkey_type && md->type != md->pkey_type) { 100 r = OBJ_NAME_add(OBJ_nid2sn(md->pkey_type), 101 OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS, name); 102 if (r == 0) 103 return (0); 104 check_defer(md->pkey_type); 105 r = OBJ_NAME_add(OBJ_nid2ln(md->pkey_type), 106 OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS, name); 107 } 108 return (r); 109 } 110 111 const EVP_CIPHER * 112 EVP_get_cipherbyname(const char *name) 113 { 114 const EVP_CIPHER *cp; 115 116 if (!OPENSSL_init_crypto(0, NULL)) 117 return NULL; 118 119 cp = (const EVP_CIPHER *)OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH); 120 return (cp); 121 } 122 123 const EVP_MD * 124 EVP_get_digestbyname(const char *name) 125 { 126 const EVP_MD *cp; 127 128 if (!OPENSSL_init_crypto(0, NULL)) 129 return NULL; 130 131 cp = (const EVP_MD *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH); 132 return (cp); 133 } 134 135 void 136 EVP_cleanup(void) 137 { 138 OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH); 139 OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH); 140 /* The above calls will only clean out the contents of the name 141 hash table, but not the hash table itself. The following line 142 does that part. -- Richard Levitte */ 143 OBJ_NAME_cleanup(-1); 144 145 EVP_PBE_cleanup(); 146 if (obj_cleanup_defer == 2) { 147 obj_cleanup_defer = 0; 148 OBJ_cleanup(); 149 } 150 OBJ_sigid_free(); 151 } 152 153 struct doall_cipher { 154 void *arg; 155 void (*fn)(const EVP_CIPHER *ciph, const char *from, const char *to, 156 void *arg); 157 }; 158 159 static void 160 do_all_cipher_fn(const OBJ_NAME *nm, void *arg) 161 { 162 struct doall_cipher *dc = arg; 163 164 if (nm->alias) 165 dc->fn(NULL, nm->name, nm->data, dc->arg); 166 else 167 dc->fn((const EVP_CIPHER *)nm->data, nm->name, NULL, dc->arg); 168 } 169 170 void 171 EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph, const char *from, 172 const char *to, void *x), void *arg) 173 { 174 struct doall_cipher dc; 175 176 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 177 (void) OPENSSL_init_crypto(0, NULL); 178 179 dc.fn = fn; 180 dc.arg = arg; 181 OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc); 182 } 183 184 void 185 EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph, const char *from, 186 const char *to, void *x), void *arg) 187 { 188 struct doall_cipher dc; 189 190 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 191 (void) OPENSSL_init_crypto(0, NULL); 192 193 dc.fn = fn; 194 dc.arg = arg; 195 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, 196 do_all_cipher_fn, &dc); 197 } 198 199 struct doall_md { 200 void *arg; 201 void (*fn)(const EVP_MD *ciph, const char *from, const char *to, 202 void *arg); 203 }; 204 205 static void 206 do_all_md_fn(const OBJ_NAME *nm, void *arg) 207 { 208 struct doall_md *dc = arg; 209 210 if (nm->alias) 211 dc->fn(NULL, nm->name, nm->data, dc->arg); 212 else 213 dc->fn((const EVP_MD *)nm->data, nm->name, NULL, dc->arg); 214 } 215 216 void 217 EVP_MD_do_all(void (*fn)(const EVP_MD *md, const char *from, const char *to, 218 void *x), void *arg) 219 { 220 struct doall_md dc; 221 222 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 223 (void) OPENSSL_init_crypto(0, NULL); 224 225 dc.fn = fn; 226 dc.arg = arg; 227 OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc); 228 } 229 230 void 231 EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *md, 232 const char *from, const char *to, void *x), void *arg) 233 { 234 struct doall_md dc; 235 236 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 237 (void) OPENSSL_init_crypto(0, NULL); 238 239 dc.fn = fn; 240 dc.arg = arg; 241 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc); 242 } 243