1/* crypto/objects/obj_xref.c */
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
62DECLARE_STACK_OF(nid_triple)
63STACK_OF(nid_triple) *sig_app, *sigx_app;
64
65static int sig_cmp(const nid_triple *a, const nid_triple *b)
66	{
67	return a->sign_id - b->sign_id;
68	}
69
70DECLARE_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
71IMPLEMENT_OBJ_BSEARCH_CMP_FN(nid_triple, nid_triple, sig);
72
73static 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
78DECLARE_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
79
80static 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
89IMPLEMENT_OBJ_BSEARCH_CMP_FN(const nid_triple *, const nid_triple *, sigx);
90
91int 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		{
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
104#ifndef OBJ_XREF_TEST2
105	if (rv == NULL)
106		{
107		rv = OBJ_bsearch_sig(&tmp, sigoid_srt,
108				 sizeof(sigoid_srt) / sizeof(nid_triple));
109		}
110#endif
111	if (rv == NULL)
112		return 0;
113	if (pdig_nid)
114		*pdig_nid = rv->hash_id;
115	if (ppkey_nid)
116		*ppkey_nid = rv->pkey_id;
117	return 1;
118	}
119
120int OBJ_find_sigid_by_algs(int *psignid, int dig_nid, int pkey_nid)
121	{
122	nid_triple tmp;
123	const nid_triple *t=&tmp;
124	const nid_triple **rv = NULL;
125
126	tmp.hash_id = dig_nid;
127	tmp.pkey_id = pkey_nid;
128
129	if (sigx_app)
130		{
131		int idx = sk_nid_triple_find(sigx_app, &tmp);
132		if (idx >= 0)
133			{
134			t = sk_nid_triple_value(sigx_app, idx);
135			rv = &t;
136			}
137		}
138
139#ifndef OBJ_XREF_TEST2
140	if (rv == NULL)
141		{
142		rv = OBJ_bsearch_sigx(&t, sigoid_srt_xref,
143				 sizeof(sigoid_srt_xref) / sizeof(nid_triple *)
144				 );
145		}
146#endif
147	if (rv == NULL)
148		return 0;
149	if (psignid)
150		*psignid = (*rv)->sign_id;
151	return 1;
152	}
153
154int OBJ_add_sigid(int signid, int dig_id, int pkey_id)
155	{
156	nid_triple *ntr;
157	if (!sig_app)
158		sig_app = sk_nid_triple_new(sig_sk_cmp);
159	if (!sig_app)
160		return 0;
161	if (!sigx_app)
162		sigx_app = sk_nid_triple_new(sigx_cmp);
163	if (!sigx_app)
164		return 0;
165	ntr = OPENSSL_malloc(sizeof(int) * 3);
166	if (!ntr)
167		return 0;
168	ntr->sign_id = signid;
169	ntr->hash_id = dig_id;
170	ntr->pkey_id = pkey_id;
171
172	if (!sk_nid_triple_push(sig_app, ntr))
173		{
174		OPENSSL_free(ntr);
175		return 0;
176		}
177
178	if (!sk_nid_triple_push(sigx_app, ntr))
179		return 0;
180
181	sk_nid_triple_sort(sig_app);
182	sk_nid_triple_sort(sigx_app);
183
184	return 1;
185	}
186
187static void sid_free(nid_triple *tt)
188	{
189	OPENSSL_free(tt);
190	}
191
192void OBJ_sigid_free(void)
193	{
194	if (sig_app)
195		{
196		sk_nid_triple_pop_free(sig_app, sid_free);
197		sig_app = NULL;
198		}
199	if (sigx_app)
200		{
201		sk_nid_triple_free(sigx_app);
202		sigx_app = NULL;
203		}
204	}
205
206#ifdef OBJ_XREF_TEST
207
208main()
209	{
210	int n1, n2, n3;
211
212	int i, rv;
213#ifdef OBJ_XREF_TEST2
214	for (i = 0; i <	sizeof(sigoid_srt) / sizeof(nid_triple); i++)
215		{
216		OBJ_add_sigid(sigoid_srt[i][0], sigoid_srt[i][1],
217				sigoid_srt[i][2]);
218		}
219#endif
220
221	for (i = 0; i <	sizeof(sigoid_srt) / sizeof(nid_triple); i++)
222		{
223		n1 = sigoid_srt[i][0];
224		rv = OBJ_find_sigid_algs(n1, &n2, &n3);
225		printf("Forward: %d, %s %s %s\n", rv,
226			OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
227		n1=0;
228		rv = OBJ_find_sigid_by_algs(&n1, n2, n3);
229		printf("Reverse: %d, %s %s %s\n", rv,
230			OBJ_nid2ln(n1), OBJ_nid2ln(n2), OBJ_nid2ln(n3));
231		}
232	}
233
234#endif
235