crypto/objects/obj_xref.c

   1 /*
   2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   3  * 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 #include "e_os.h"
  62
  63 static STACK_OF(nid_triple) *sig_app, *sigx_app;
  64
  65 static int sig_cmp(const nid_triple *a, const nid_triple *b)
  66 {
  67     return a->sign_id - b->sign_id;
  68 }
  69
  70 DECLARE_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
  71 IMPLEMENT_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
  72
  73 static int sig_sk_cmp(const nid_triple *const *a, const nid_triple *const *b)
  74 {
  75     return (*a)->sign_id - (*b)->sign_id;
  76 }
  77
  78 DECLARE_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  79
  80 static int sigx_cmp(const nid_triple *const *a, const nid_triple *const *b)
  81 {
  82     int ret;
  83     ret = (*a)->hash_id - (*b)->hash_id;
  84     if (ret)
  85         return ret;
  86     return (*a)->pkey_id - (*b)->pkey_id;
  87 }
  88
  89 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  90
  91 int OBJ_find_sigid_algs(int signid, int *pdig_nid, int *ppkey_nid)
  92 {
  93     nid_triple tmp;
  94     const nid_triple *rv = NULL;
  95     tmp.sign_id = signid;
  96
  97     if (sig_app) {
  98         int idx = sk_nid_triple_find(sig_app, &tmp);
  99         if (idx >= 0)
 100             rv = sk_nid_triple_value(sig_app, idx);
 101     }
 102 #ifndef OBJ_XREF_TEST2
 103     if (rv == NULL) {
 104         rv = OBJ_bsearch_sig(&tmp, sigoid_srt, OSSL_NELEM(sigoid_srt));
 105     }
 106 #endif
 107     if (rv == NULL)
 108         return 0;
 109     if (pdig_nid)
 110         *pdig_nid = rv->hash_id;
 111     if (ppkey_nid)
 112         *ppkey_nid = rv->pkey_id;
 113     return 1;
 114 }
 115
 116 int OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid)
 117 {
 118     nid_triple tmp;
 119     const nid_triple *t = &tmp;
 120     const nid_triple **rv = NULL;
 121
 122     tmp.hash_id = dig_nid;
 123     tmp.pkey_id = pkey_nid;
 124
 125     if (sigx_app) {
 126         int idx = sk_nid_triple_find(sigx_app, &tmp);
 127         if (idx >= 0) {
 128             t = sk_nid_triple_value(sigx_app, idx);
 129             rv = &t;
 130         }
 131     }
 132 #ifndef OBJ_XREF_TEST2
 133     if (rv == NULL) {
 134         rv = OBJ_bsearch_sigx(&t, sigoid_srt_xref, OSSL_NELEM(sigoid_srt_xref));
 135     }
 136 #endif
 137     if (rv == NULL)
 138         return 0;
 139     if (psignid)
 140         *psignid = (*rv)->sign_id;
 141     return 1;
 142 }
 143
 144 int OBJ_add_sigid(int signid, int dig_id, int pkey_id)
 145 {
 146     nid_triple *ntr;
 147     if (sig_app == NULL)
 148         sig_app = sk_nid_triple_new(sig_sk_cmp);
 149     if (sig_app == NULL)
 150         return 0;
 151     if (sigx_app == NULL)
 152         sigx_app = sk_nid_triple_new(sigx_cmp);
 153     if (sigx_app == NULL)
 154         return 0;
 155     ntr = OPENSSL_malloc(sizeof(*ntr));
 156     if (ntr == NULL)
 157         return 0;
 158     ntr->sign_id = signid;
 159     ntr->hash_id = dig_id;
 160     ntr->pkey_id = pkey_id;
 161
 162     if (!sk_nid_triple_push(sig_app, ntr)) {
 163         OPENSSL_free(ntr);
 164         return 0;
 165     }
 166
 167     if (!sk_nid_triple_push(sigx_app, ntr))
 168         return 0;
 169
 170     sk_nid_triple_sort(sig_app);
 171     sk_nid_triple_sort(sigx_app);
 172
 173     return 1;
 174 }
 175
 176 static void sid_free(nid_triple *tt)
 177 {
 178     OPENSSL_free(tt);
 179 }
 180
 181 void OBJ_sigid_free(void)
 182 {
 183     sk_nid_triple_pop_free(sig_app, sid_free);
 184     sig_app = NULL;
 185     sk_nid_triple_free(sigx_app);
 186     sigx_app = NULL;
 187 }
 188
 189 #ifdef OBJ_XREF_TEST
 190
 191 main()
 192 {
 193     int n1, n2, n3;
 194
 195     int i, rv;
 196 # ifdef OBJ_XREF_TEST2
 197     for (i = 0; i < OSSL_NELEM(sigoid_srt); i++) {
 198         OBJ_add_sigid(sigoid_srt[i][0], sigoid_srt[i][1], sigoid_srt[i][2]);
 199     }
 200 # endif
 201
 202     for (i = 0; i < OSSL_NELEM(sigoid_srt); i++) {
 203         n1 = sigoid_srt[i][0];
 204         rv = OBJ_find_sigid_algs(n1, &n2, &n3);
 205         printf("Forward: %d, %s %s %s\n", rv,
 206                OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
 207         n1 = 0;
 208         rv = OBJ_find_sigid_by_algs(&n1, n2, n3);
 209         printf("Reverse: %d, %s %s %s\n", rv,
 210                OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
 211     }
 212 }
 213
 214 #endif