crypto/objects/obj_xref.c

   1 /* crypto/objects/obj_xref.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 2006.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <openssl/objects.h>
  61 #include "obj_xref.h"
  62 #include "e_os.h"
  63
  64 DEFINE_STACK_OF(nid_triple)
  65
  66 static STACK_OF(nid_triple) *sig_app, *sigx_app;
  67
  68 static int sig_cmp(const nid_triple *a, const nid_triple *b)
  69 {
  70     return a->sign_id - b->sign_id;
  71 }
  72
  73 DECLARE_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
  74 IMPLEMENT_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
  75
  76 static int sig_sk_cmp(const nid_triple *const *a, const nid_triple *const *b)
  77 {
  78     return (*a)->sign_id - (*b)->sign_id;
  79 }
  80
  81 DECLARE_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  82
  83 static int sigx_cmp(const nid_triple *const *a, const nid_triple *const *b)
  84 {
  85     int ret;
  86     ret = (*a)->hash_id - (*b)->hash_id;
  87     if (ret)
  88         return ret;
  89     return (*a)->pkey_id - (*b)->pkey_id;
  90 }
  91
  92 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  93
  94 int OBJ_find_sigid_algs(int signid, int *pdig_nid, int *ppkey_nid)
  95 {
  96     nid_triple tmp;
  97     const nid_triple *rv = NULL;
  98     tmp.sign_id = signid;
  99
 100     if (sig_app) {
 101         int idx = sk_nid_triple_find(sig_app, &tmp);
 102         if (idx >= 0)
 103             rv = sk_nid_triple_value(sig_app, idx);
 104     }
 105 #ifndef OBJ_XREF_TEST2
 106     if (rv == NULL) {
 107         rv = OBJ_bsearch_sig(&tmp, sigoid_srt, OSSL_NELEM(sigoid_srt));
 108     }
 109 #endif
 110     if (rv == NULL)
 111         return 0;
 112     if (pdig_nid)
 113         *pdig_nid = rv->hash_id;
 114     if (ppkey_nid)
 115         *ppkey_nid = rv->pkey_id;
 116     return 1;
 117 }
 118
 119 int OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid)
 120 {
 121     nid_triple tmp;
 122     const nid_triple *t = &tmp;
 123     const nid_triple **rv = NULL;
 124
 125     tmp.hash_id = dig_nid;
 126     tmp.pkey_id = pkey_nid;
 127
 128     if (sigx_app) {
 129         int idx = sk_nid_triple_find(sigx_app, &tmp);
 130         if (idx >= 0) {
 131             t = sk_nid_triple_value(sigx_app, idx);
 132             rv = &t;
 133         }
 134     }
 135 #ifndef OBJ_XREF_TEST2
 136     if (rv == NULL) {
 137         rv = OBJ_bsearch_sigx(&t, sigoid_srt_xref, OSSL_NELEM(sigoid_srt_xref));
 138     }
 139 #endif
 140     if (rv == NULL)
 141         return 0;
 142     if (psignid)
 143         *psignid = (*rv)->sign_id;
 144     return 1;
 145 }
 146
 147 int OBJ_add_sigid(int signid, int dig_id, int pkey_id)
 148 {
 149     nid_triple *ntr;
 150     if (sig_app == NULL)
 151         sig_app = sk_nid_triple_new(sig_sk_cmp);
 152     if (sig_app == NULL)
 153         return 0;
 154     if (sigx_app == NULL)
 155         sigx_app = sk_nid_triple_new(sigx_cmp);
 156     if (sigx_app == NULL)
 157         return 0;
 158     ntr = OPENSSL_malloc(sizeof(*ntr));
 159     if (ntr == NULL)
 160         return 0;
 161     ntr->sign_id = signid;
 162     ntr->hash_id = dig_id;
 163     ntr->pkey_id = pkey_id;
 164
 165     if (!sk_nid_triple_push(sig_app, ntr)) {
 166         OPENSSL_free(ntr);
 167         return 0;
 168     }
 169
 170     if (!sk_nid_triple_push(sigx_app, ntr))
 171         return 0;
 172
 173     sk_nid_triple_sort(sig_app);
 174     sk_nid_triple_sort(sigx_app);
 175
 176     return 1;
 177 }
 178
 179 static void sid_free(nid_triple *tt)
 180 {
 181     OPENSSL_free(tt);
 182 }
 183
 184 void OBJ_sigid_free(void)
 185 {
 186     sk_nid_triple_pop_free(sig_app, sid_free);
 187     sig_app = NULL;
 188     sk_nid_triple_free(sigx_app);
 189     sigx_app = NULL;
 190 }
 191
 192 #ifdef OBJ_XREF_TEST
 193
 194 main()
 195 {
 196     int n1, n2, n3;
 197
 198     int i, rv;
 199 # ifdef OBJ_XREF_TEST2
 200     for (i = 0; i < OSSL_NELEM(sigoid_srt); i++) {
 201         OBJ_add_sigid(sigoid_srt[i][0], sigoid_srt[i][1], sigoid_srt[i][2]);
 202     }
 203 # endif
 204
 205     for (i = 0; i < OSSL_NELEM(sigoid_srt); i++) {
 206         n1 = sigoid_srt[i][0];
 207         rv = OBJ_find_sigid_algs(n1, &n2, &n3);
 208         printf("Forward: %d, %s %s %s\n", rv,
 209                OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
 210         n1 = 0;
 211         rv = OBJ_find_sigid_by_algs(&n1, n2, n3);
 212         printf("Reverse: %d, %s %s %s\n", rv,
 213                OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
 214     }
 215 }
 216
 217 #endif