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
  63 DECLARE_STACK_OF(nid_triple)
  64 STACK_OF(nid_triple) *sig_app, *sigx_app;
  65
  66 static int 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 sig_sk_cmp(const nid_triple *const *a, const nid_triple *const *b)
  75 {
  76     return (*a)->sign_id - (*b)->sign_id;
  77 }
  78
  79 DECLARE_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  80
  81 static int sigx_cmp(const nid_triple *const *a, const nid_triple *const *b)
  82 {
  83     int ret;
  84     ret = (*a)->hash_id - (*b)->hash_id;
  85     if (ret)
  86         return ret;
  87     return (*a)->pkey_id - (*b)->pkey_id;
  88 }
  89
  90 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
  91
  92 int OBJ_find_sigid_algs(int signid, int *pdig_nid, int *ppkey_nid)
  93 {
  94     nid_triple tmp;
  95     const nid_triple *rv = NULL;
  96     tmp.sign_id = signid;
  97
  98     if (sig_app) {
  99         int idx = sk_nid_triple_find(sig_app, &tmp);
 100         if (idx >= 0)
 101             rv = sk_nid_triple_value(sig_app, idx);
 102     }
 103 #ifndef OBJ_XREF_TEST2
 104     if (rv == NULL) {
 105         rv = OBJ_bsearch_sig(&tmp, sigoid_srt,
 106                              sizeof(sigoid_srt) / sizeof(nid_triple));
 107     }
 108 #endif
 109     if (rv == NULL)
 110         return 0;
 111     if (pdig_nid)
 112         *pdig_nid = rv->hash_id;
 113     if (ppkey_nid)
 114         *ppkey_nid = rv->pkey_id;
 115     return 1;
 116 }
 117
 118 int OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid)
 119 {
 120     nid_triple tmp;
 121     const nid_triple *t = &tmp;
 122     const nid_triple **rv = NULL;
 123
 124     tmp.hash_id = dig_nid;
 125     tmp.pkey_id = pkey_nid;
 126
 127     if (sigx_app) {
 128         int idx = sk_nid_triple_find(sigx_app, &tmp);
 129         if (idx >= 0) {
 130             t = sk_nid_triple_value(sigx_app, idx);
 131             rv = &t;
 132         }
 133     }
 134 #ifndef OBJ_XREF_TEST2
 135     if (rv == NULL) {
 136         rv = OBJ_bsearch_sigx(&t, sigoid_srt_xref,
 137                               sizeof(sigoid_srt_xref) / sizeof(nid_triple *)
 138             );
 139     }
 140 #endif
 141     if (rv == NULL)
 142         return 0;
 143     if (psignid)
 144         *psignid = (*rv)->sign_id;
 145     return 1;
 146 }
 147
 148 int OBJ_add_sigid(int signid, int dig_id, int pkey_id)
 149 {
 150     nid_triple *ntr;
 151     if (!sig_app)
 152         sig_app = sk_nid_triple_new(sig_sk_cmp);
 153     if (!sig_app)
 154         return 0;
 155     if (!sigx_app)
 156         sigx_app = sk_nid_triple_new(sigx_cmp);
 157     if (!sigx_app)
 158         return 0;
 159     ntr = OPENSSL_malloc(sizeof(int) * 3);
 160     if (!ntr)
 161         return 0;
 162     ntr->sign_id = signid;
 163     ntr->hash_id = dig_id;
 164     ntr->pkey_id = pkey_id;
 165
 166     if (!sk_nid_triple_push(sig_app, ntr)) {
 167         OPENSSL_free(ntr);
 168         return 0;
 169     }
 170
 171     if (!sk_nid_triple_push(sigx_app, ntr))
 172         return 0;
 173
 174     sk_nid_triple_sort(sig_app);
 175     sk_nid_triple_sort(sigx_app);
 176
 177     return 1;
 178 }
 179
 180 static void sid_free(nid_triple *tt)
 181 {
 182     OPENSSL_free(tt);
 183 }
 184
 185 void OBJ_sigid_free(void)
 186 {
 187     if (sig_app) {
 188         sk_nid_triple_pop_free(sig_app, sid_free);
 189         sig_app = NULL;
 190     }
 191     if (sigx_app) {
 192         sk_nid_triple_free(sigx_app);
 193         sigx_app = NULL;
 194     }
 195 }
 196
 197 #ifdef OBJ_XREF_TEST
 198
 199 main()
 200 {
 201     int n1, n2, n3;
 202
 203     int i, rv;
 204 # ifdef OBJ_XREF_TEST2
 205     for (i = 0; i < sizeof(sigoid_srt) / sizeof(nid_triple); i++) {
 206         OBJ_add_sigid(sigoid_srt[i][0], sigoid_srt[i][1], sigoid_srt[i][2]);
 207     }
 208 # endif
 209
 210     for (i = 0; i < sizeof(sigoid_srt) / sizeof(nid_triple); i++) {
 211         n1 = sigoid_srt[i][0];
 212         rv = OBJ_find_sigid_algs(n1, &n2, &n3);
 213         printf("Forward: %d, %s %s %s\n", rv,
 214                OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
 215         n1 = 0;
 216         rv = OBJ_find_sigid_by_algs(&n1, n2, n3);
 217         printf("Reverse: %d, %s %s %s\n", rv,
 218                OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
 219     }
 220 }
 221
 222 #endif