1 /* $OpenBSD: obj_xref.c,v 1.8 2017/01/21 04:44:43 jsing Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2006. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <openssl/objects.h> 60 #include "obj_xref.h" 61 62 DECLARE_STACK_OF(nid_triple) 63 STACK_OF(nid_triple) *sig_app, *sigx_app; 64 65 static int 66 sig_cmp(const nid_triple *a, const nid_triple *b) 67 { 68 return a->sign_id - b->sign_id; 69 } 70 71 static int sig_cmp_BSEARCH_CMP_FN(const void *, const void *); 72 static int sig_cmp(nid_triple const *, nid_triple const *); 73 static nid_triple *OBJ_bsearch_sig(nid_triple *key, nid_triple const *base, int num); 74 75 static int 76 sig_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 77 { 78 nid_triple const *a = a_; 79 nid_triple const *b = b_; 80 return sig_cmp(a, b); 81 } 82 83 static nid_triple * 84 OBJ_bsearch_sig(nid_triple *key, nid_triple const *base, int num) 85 { 86 return (nid_triple *)OBJ_bsearch_(key, base, num, sizeof(nid_triple), 87 sig_cmp_BSEARCH_CMP_FN); 88 } 89 90 static int 91 sig_sk_cmp(const nid_triple * const *a, const nid_triple * const *b) 92 { 93 return (*a)->sign_id - (*b)->sign_id; 94 } 95 96 static int sigx_cmp_BSEARCH_CMP_FN(const void *, const void *); 97 static int sigx_cmp(const nid_triple * const *, const nid_triple * const *); 98 static const nid_triple * *OBJ_bsearch_sigx(const nid_triple * *key, const nid_triple * const *base, int num); 99 100 static int 101 sigx_cmp(const nid_triple * const *a, const nid_triple * const *b) 102 { 103 int ret; 104 105 ret = (*a)->hash_id - (*b)->hash_id; 106 if (ret) 107 return ret; 108 return (*a)->pkey_id - (*b)->pkey_id; 109 } 110 111 112 static int 113 sigx_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 114 { 115 const nid_triple * const *a = a_; 116 const nid_triple * const *b = b_; 117 return sigx_cmp(a, b); 118 } 119 120 static const nid_triple * * 121 OBJ_bsearch_sigx(const nid_triple * *key, const nid_triple * const *base, int num) 122 { 123 return (const nid_triple * *)OBJ_bsearch_(key, base, num, sizeof(const nid_triple *), 124 sigx_cmp_BSEARCH_CMP_FN); 125 } 126 127 int 128 OBJ_find_sigid_algs(int signid, int *pdig_nid, int *ppkey_nid) 129 { 130 nid_triple tmp; 131 const nid_triple *rv = NULL; 132 tmp.sign_id = signid; 133 134 if (sig_app) { 135 int idx = sk_nid_triple_find(sig_app, &tmp); 136 if (idx >= 0) 137 rv = sk_nid_triple_value(sig_app, idx); 138 } 139 140 #ifndef OBJ_XREF_TEST2 141 if (rv == NULL) { 142 rv = OBJ_bsearch_sig(&tmp, sigoid_srt, 143 sizeof(sigoid_srt) / sizeof(nid_triple)); 144 } 145 #endif 146 if (rv == NULL) 147 return 0; 148 if (pdig_nid) 149 *pdig_nid = rv->hash_id; 150 if (ppkey_nid) 151 *ppkey_nid = rv->pkey_id; 152 return 1; 153 } 154 155 int 156 OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid) 157 { 158 nid_triple tmp; 159 const nid_triple *t = &tmp; 160 const nid_triple **rv = NULL; 161 162 tmp.hash_id = dig_nid; 163 tmp.pkey_id = pkey_nid; 164 165 if (sigx_app) { 166 int idx = sk_nid_triple_find(sigx_app, &tmp); 167 if (idx >= 0) { 168 t = sk_nid_triple_value(sigx_app, idx); 169 rv = &t; 170 } 171 } 172 173 #ifndef OBJ_XREF_TEST2 174 if (rv == NULL) { 175 rv = OBJ_bsearch_sigx(&t, sigoid_srt_xref, 176 sizeof(sigoid_srt_xref) / sizeof(nid_triple *)); 177 } 178 #endif 179 if (rv == NULL) 180 return 0; 181 if (psignid) 182 *psignid = (*rv)->sign_id; 183 return 1; 184 } 185 186 int 187 OBJ_add_sigid(int signid, int dig_id, int pkey_id) 188 { 189 nid_triple *ntr; 190 191 if (!sig_app) 192 sig_app = sk_nid_triple_new(sig_sk_cmp); 193 if (!sig_app) 194 return 0; 195 if (!sigx_app) 196 sigx_app = sk_nid_triple_new(sigx_cmp); 197 if (!sigx_app) 198 return 0; 199 ntr = reallocarray(NULL, 3, sizeof(int)); 200 if (!ntr) 201 return 0; 202 ntr->sign_id = signid; 203 ntr->hash_id = dig_id; 204 ntr->pkey_id = pkey_id; 205 206 if (!sk_nid_triple_push(sig_app, ntr)) { 207 free(ntr); 208 return 0; 209 } 210 211 if (!sk_nid_triple_push(sigx_app, ntr)) 212 return 0; 213 214 sk_nid_triple_sort(sig_app); 215 sk_nid_triple_sort(sigx_app); 216 217 return 1; 218 } 219 220 static void 221 sid_free(nid_triple *tt) 222 { 223 free(tt); 224 } 225 226 void 227 OBJ_sigid_free(void) 228 { 229 if (sig_app) { 230 sk_nid_triple_pop_free(sig_app, sid_free); 231 sig_app = NULL; 232 } 233 if (sigx_app) { 234 sk_nid_triple_free(sigx_app); 235 sigx_app = NULL; 236 } 237 } 238