1 /* $OpenBSD: ts_verify_ctx.c,v 1.14 2023/07/07 07:25:21 beck 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 LCRYPTO_ALIAS(TS_VERIFY_CTX_new);
78
79 void
TS_VERIFY_CTX_free(TS_VERIFY_CTX * ctx)80 TS_VERIFY_CTX_free(TS_VERIFY_CTX *ctx)
81 {
82 if (!ctx)
83 return;
84
85 TS_VERIFY_CTX_cleanup(ctx);
86 free(ctx);
87 }
88 LCRYPTO_ALIAS(TS_VERIFY_CTX_free);
89
90 void
TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX * ctx)91 TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX *ctx)
92 {
93 if (!ctx)
94 return;
95
96 X509_STORE_free(ctx->store);
97 sk_X509_pop_free(ctx->certs, X509_free);
98
99 ASN1_OBJECT_free(ctx->policy);
100
101 X509_ALGOR_free(ctx->md_alg);
102 free(ctx->imprint);
103
104 BIO_free_all(ctx->data);
105
106 ASN1_INTEGER_free(ctx->nonce);
107
108 GENERAL_NAME_free(ctx->tsa_name);
109
110 memset(ctx, 0, sizeof(*ctx));
111 }
112 LCRYPTO_ALIAS(TS_VERIFY_CTX_cleanup);
113
114 /*
115 * XXX: The following accessors demonstrate the amount of care and thought that
116 * went into OpenSSL 1.1 API design and the review thereof: for whatever reason
117 * these functions return what was passed in. Correct memory management is left
118 * as an exercise for the reader... Unfortunately, careful consumers like
119 * openssl-ruby assume this behavior, so we're stuck with this insanity. The
120 * cherry on top is the TS_VERIFY_CTS_set_certs() [sic!] function that made it
121 * into the public API.
122 *
123 * Outstanding job, R$ and tjh, A+.
124 */
125
126 int
TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX * ctx,int flags)127 TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX *ctx, int flags)
128 {
129 ctx->flags |= flags;
130
131 return ctx->flags;
132 }
133 LCRYPTO_ALIAS(TS_VERIFY_CTX_add_flags);
134
135 int
TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX * ctx,int flags)136 TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX *ctx, int flags)
137 {
138 ctx->flags = flags;
139
140 return ctx->flags;
141 }
142 LCRYPTO_ALIAS(TS_VERIFY_CTX_set_flags);
143
144 BIO *
TS_VERIFY_CTX_set_data(TS_VERIFY_CTX * ctx,BIO * bio)145 TS_VERIFY_CTX_set_data(TS_VERIFY_CTX *ctx, BIO *bio)
146 {
147 ctx->data = bio;
148
149 return ctx->data;
150 }
151 LCRYPTO_ALIAS(TS_VERIFY_CTX_set_data);
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 LCRYPTO_ALIAS(TS_VERIFY_CTX_set_store);
161
STACK_OF(X509)162 STACK_OF(X509) *
163 TS_VERIFY_CTX_set_certs(TS_VERIFY_CTX *ctx, STACK_OF(X509) *certs)
164 {
165 ctx->certs = certs;
166
167 return ctx->certs;
168 }
169 LCRYPTO_ALIAS(TS_VERIFY_CTX_set_certs);
170
171 unsigned char *
TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX * ctx,unsigned char * imprint,long imprint_len)172 TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX *ctx, unsigned char *imprint,
173 long imprint_len)
174 {
175 free(ctx->imprint);
176
177 ctx->imprint = imprint;
178 ctx->imprint_len = imprint_len;
179
180 return ctx->imprint;
181 }
182 LCRYPTO_ALIAS(TS_VERIFY_CTX_set_imprint);
183
184 TS_VERIFY_CTX *
TS_REQ_to_TS_VERIFY_CTX(TS_REQ * req,TS_VERIFY_CTX * ctx)185 TS_REQ_to_TS_VERIFY_CTX(TS_REQ *req, TS_VERIFY_CTX *ctx)
186 {
187 TS_VERIFY_CTX *ret = ctx;
188 ASN1_OBJECT *policy;
189 TS_MSG_IMPRINT *imprint;
190 X509_ALGOR *md_alg;
191 ASN1_OCTET_STRING *msg;
192 const ASN1_INTEGER *nonce;
193
194 if (ret)
195 TS_VERIFY_CTX_cleanup(ret);
196 else if (!(ret = TS_VERIFY_CTX_new()))
197 return NULL;
198
199 /* Setting flags. */
200 ret->flags = TS_VFY_ALL_IMPRINT & ~(TS_VFY_TSA_NAME | TS_VFY_SIGNATURE);
201
202 /* Setting policy. */
203 if ((policy = TS_REQ_get_policy_id(req)) != NULL) {
204 if (!(ret->policy = OBJ_dup(policy)))
205 goto err;
206 } else
207 ret->flags &= ~TS_VFY_POLICY;
208
209 /* Setting md_alg, imprint and imprint_len. */
210 imprint = TS_REQ_get_msg_imprint(req);
211 md_alg = TS_MSG_IMPRINT_get_algo(imprint);
212 if (!(ret->md_alg = X509_ALGOR_dup(md_alg)))
213 goto err;
214 msg = TS_MSG_IMPRINT_get_msg(imprint);
215 ret->imprint_len = ASN1_STRING_length(msg);
216 if (!(ret->imprint = malloc(ret->imprint_len)))
217 goto err;
218 memcpy(ret->imprint, ASN1_STRING_data(msg), ret->imprint_len);
219
220 /* Setting nonce. */
221 if ((nonce = TS_REQ_get_nonce(req)) != NULL) {
222 if (!(ret->nonce = ASN1_INTEGER_dup(nonce)))
223 goto err;
224 } else
225 ret->flags &= ~TS_VFY_NONCE;
226
227 return ret;
228
229 err:
230 if (ctx)
231 TS_VERIFY_CTX_cleanup(ctx);
232 else
233 TS_VERIFY_CTX_free(ret);
234 return NULL;
235 }
236 LCRYPTO_ALIAS(TS_REQ_to_TS_VERIFY_CTX);
237