1 /* $OpenBSD: ts_verify_ctx.c,v 1.11 2022/07/24 19:54:46 tb Exp $ */
2 /* Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL
3 * project 2003.
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 <string.h>
60
61 #include <openssl/err.h>
62 #include <openssl/objects.h>
63 #include <openssl/ts.h>
64
65 #include "ts_local.h"
66
67 TS_VERIFY_CTX *
TS_VERIFY_CTX_new(void)68 TS_VERIFY_CTX_new(void)
69 {
70 TS_VERIFY_CTX *ctx = calloc(1, sizeof(TS_VERIFY_CTX));
71
72 if (!ctx)
73 TSerror(ERR_R_MALLOC_FAILURE);
74
75 return ctx;
76 }
77
78 void
TS_VERIFY_CTX_init(TS_VERIFY_CTX * ctx)79 TS_VERIFY_CTX_init(TS_VERIFY_CTX *ctx)
80 {
81 memset(ctx, 0, sizeof(TS_VERIFY_CTX));
82 }
83
84 void
TS_VERIFY_CTX_free(TS_VERIFY_CTX * ctx)85 TS_VERIFY_CTX_free(TS_VERIFY_CTX *ctx)
86 {
87 if (!ctx)
88 return;
89
90 TS_VERIFY_CTX_cleanup(ctx);
91 free(ctx);
92 }
93
94 void
TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX * ctx)95 TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX *ctx)
96 {
97 if (!ctx)
98 return;
99
100 X509_STORE_free(ctx->store);
101 sk_X509_pop_free(ctx->certs, X509_free);
102
103 ASN1_OBJECT_free(ctx->policy);
104
105 X509_ALGOR_free(ctx->md_alg);
106 free(ctx->imprint);
107
108 BIO_free_all(ctx->data);
109
110 ASN1_INTEGER_free(ctx->nonce);
111
112 GENERAL_NAME_free(ctx->tsa_name);
113
114 TS_VERIFY_CTX_init(ctx);
115 }
116
117 /*
118 * XXX: The following accessors demonstrate the amount of care and thought that
119 * went into OpenSSL 1.1 API design and the review thereof: for whatever reason
120 * these functions return what was passed in. Correct memory management is left
121 * as an exercise for the reader... Unfortunately, careful consumers like
122 * openssl-ruby assume this behavior, so we're stuck with this insanity. The
123 * cherry on top is the TS_VERIFY_CTS_set_certs() [sic!] function that made it
124 * into the public API.
125 *
126 * Outstanding job, R$ and tjh, A+.
127 */
128
129 int
TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX * ctx,int flags)130 TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX *ctx, int flags)
131 {
132 ctx->flags |= flags;
133
134 return ctx->flags;
135 }
136
137 int
TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX * ctx,int flags)138 TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX *ctx, int flags)
139 {
140 ctx->flags = flags;
141
142 return ctx->flags;
143 }
144
145 BIO *
TS_VERIFY_CTX_set_data(TS_VERIFY_CTX * ctx,BIO * bio)146 TS_VERIFY_CTX_set_data(TS_VERIFY_CTX *ctx, BIO *bio)
147 {
148 ctx->data = bio;
149
150 return ctx->data;
151 }
152
153 X509_STORE *
TS_VERIFY_CTX_set_store(TS_VERIFY_CTX * ctx,X509_STORE * store)154 TS_VERIFY_CTX_set_store(TS_VERIFY_CTX *ctx, X509_STORE *store)
155 {
156 ctx->store = store;
157
158 return ctx->store;
159 }
160
STACK_OF(X509)161 STACK_OF(X509) *
162 TS_VERIFY_CTX_set_certs(TS_VERIFY_CTX *ctx, STACK_OF(X509) *certs)
163 {
164 ctx->certs = certs;
165
166 return ctx->certs;
167 }
168
169 unsigned char *
TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX * ctx,unsigned char * imprint,long imprint_len)170 TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX *ctx, unsigned char *imprint,
171 long imprint_len)
172 {
173 free(ctx->imprint);
174
175 ctx->imprint = imprint;
176 ctx->imprint_len = imprint_len;
177
178 return ctx->imprint;
179 }
180
181 TS_VERIFY_CTX *
TS_REQ_to_TS_VERIFY_CTX(TS_REQ * req,TS_VERIFY_CTX * ctx)182 TS_REQ_to_TS_VERIFY_CTX(TS_REQ *req, TS_VERIFY_CTX *ctx)
183 {
184 TS_VERIFY_CTX *ret = ctx;
185 ASN1_OBJECT *policy;
186 TS_MSG_IMPRINT *imprint;
187 X509_ALGOR *md_alg;
188 ASN1_OCTET_STRING *msg;
189 const ASN1_INTEGER *nonce;
190
191 if (ret)
192 TS_VERIFY_CTX_cleanup(ret);
193 else if (!(ret = TS_VERIFY_CTX_new()))
194 return NULL;
195
196 /* Setting flags. */
197 ret->flags = TS_VFY_ALL_IMPRINT & ~(TS_VFY_TSA_NAME | TS_VFY_SIGNATURE);
198
199 /* Setting policy. */
200 if ((policy = TS_REQ_get_policy_id(req)) != NULL) {
201 if (!(ret->policy = OBJ_dup(policy)))
202 goto err;
203 } else
204 ret->flags &= ~TS_VFY_POLICY;
205
206 /* Setting md_alg, imprint and imprint_len. */
207 imprint = TS_REQ_get_msg_imprint(req);
208 md_alg = TS_MSG_IMPRINT_get_algo(imprint);
209 if (!(ret->md_alg = X509_ALGOR_dup(md_alg)))
210 goto err;
211 msg = TS_MSG_IMPRINT_get_msg(imprint);
212 ret->imprint_len = ASN1_STRING_length(msg);
213 if (!(ret->imprint = malloc(ret->imprint_len)))
214 goto err;
215 memcpy(ret->imprint, ASN1_STRING_data(msg), ret->imprint_len);
216
217 /* Setting nonce. */
218 if ((nonce = TS_REQ_get_nonce(req)) != NULL) {
219 if (!(ret->nonce = ASN1_INTEGER_dup(nonce)))
220 goto err;
221 } else
222 ret->flags &= ~TS_VFY_NONCE;
223
224 return ret;
225
226 err:
227 if (ctx)
228 TS_VERIFY_CTX_cleanup(ctx);
229 else
230 TS_VERIFY_CTX_free(ret);
231 return NULL;
232 }
233