obj_xref.c revision 296341 
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
63DECLARE_STACK_OF(nid_triple)
64STACK_OF(nid_triple) *sig_app, *sigx_app;
65
66static int sig_cmp(const nid_triple *a, const nid_triple *b)
67{
68    return a->sign_id - b->sign_id;
69}
70
71DECLARE_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
72IMPLEMENT_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
73
74static 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
79DECLARE_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
80
81static 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
90IMPLEMENT_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
91
92int 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
118int 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
148int 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
180static void sid_free(nid_triple *tt)
181{
182    OPENSSL_free(tt);
183}
184
185void 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
199main()
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
223