crypto/libressl/crypto/objects/obj_xref.c

   1 /* $OpenBSD$ */
   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 DECLARE_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
  72 IMPLEMENT_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
  73
  74 static int
  75 sig_sk_cmp(const nid_triple * const *a, const nid_triple * const *b)
  76 {
  77         return (*a)->sign_id - (*b)->sign_id;
  78 }
  79
  80 DECLARE_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  81
  82 static int
  83 sigx_cmp(const nid_triple * const *a, const nid_triple * const *b)
  84 {
  85         int ret;
  86
  87         ret = (*a)->hash_id - (*b)->hash_id;
  88         if (ret)
  89                 return ret;
  90         return (*a)->pkey_id - (*b)->pkey_id;
  91 }
  92
  93 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  94
  95 int
  96 OBJ_find_sigid_algs(int signid, int *pdig_nid, int *ppkey_nid)
  97 {
  98         nid_triple tmp;
  99         const nid_triple *rv = NULL;
 100         tmp.sign_id = signid;
 101
 102         if (sig_app) {
 103                 int idx = sk_nid_triple_find(sig_app, &tmp);
 104                 if (idx >= 0)
 105                         rv = sk_nid_triple_value(sig_app, idx);
 106         }
 107
 108 #ifndef OBJ_XREF_TEST2
 109         if (rv == NULL) {
 110                 rv = OBJ_bsearch_sig(&tmp, sigoid_srt,
 111                     sizeof(sigoid_srt) / sizeof(nid_triple));
 112         }
 113 #endif
 114         if (rv == NULL)
 115                 return 0;
 116         if (pdig_nid)
 117                 *pdig_nid = rv->hash_id;
 118         if (ppkey_nid)
 119                 *ppkey_nid = rv->pkey_id;
 120         return 1;
 121 }
 122
 123 int
 124 OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid)
 125 {
 126         nid_triple tmp;
 127         const nid_triple *t = &tmp;
 128         const nid_triple **rv = NULL;
 129
 130         tmp.hash_id = dig_nid;
 131         tmp.pkey_id = pkey_nid;
 132
 133         if (sigx_app) {
 134                 int idx = sk_nid_triple_find(sigx_app, &tmp);
 135                 if (idx >= 0) {
 136                         t = sk_nid_triple_value(sigx_app, idx);
 137                         rv = &t;
 138                 }
 139         }
 140
 141 #ifndef OBJ_XREF_TEST2
 142         if (rv == NULL) {
 143                 rv = OBJ_bsearch_sigx(&t, sigoid_srt_xref,
 144                     sizeof(sigoid_srt_xref) / sizeof(nid_triple *));
 145         }
 146 #endif
 147         if (rv == NULL)
 148                 return 0;
 149         if (psignid)
 150                 *psignid = (*rv)->sign_id;
 151         return 1;
 152 }
 153
 154 int
 155 OBJ_add_sigid(int signid, int dig_id, int pkey_id)
 156 {
 157         nid_triple *ntr;
 158
 159         if (!sig_app)
 160                 sig_app = sk_nid_triple_new(sig_sk_cmp);
 161         if (!sig_app)
 162                 return 0;
 163         if (!sigx_app)
 164                 sigx_app = sk_nid_triple_new(sigx_cmp);
 165         if (!sigx_app)
 166                 return 0;
 167         ntr = reallocarray(NULL, 3, sizeof(int));
 168         if (!ntr)
 169                 return 0;
 170         ntr->sign_id = signid;
 171         ntr->hash_id = dig_id;
 172         ntr->pkey_id = pkey_id;
 173
 174         if (!sk_nid_triple_push(sig_app, ntr)) {
 175                 free(ntr);
 176                 return 0;
 177         }
 178
 179         if (!sk_nid_triple_push(sigx_app, ntr))
 180                 return 0;
 181
 182         sk_nid_triple_sort(sig_app);
 183         sk_nid_triple_sort(sigx_app);
 184
 185         return 1;
 186 }
 187
 188 static void
 189 sid_free(nid_triple *tt)
 190 {
 191         free(tt);
 192 }
 193
 194 void
 195 OBJ_sigid_free(void)
 196 {
 197         if (sig_app) {
 198                 sk_nid_triple_pop_free(sig_app, sid_free);
 199                 sig_app = NULL;
 200         }
 201         if (sigx_app) {
 202                 sk_nid_triple_free(sigx_app);
 203                 sigx_app = NULL;
 204         }
 205 }