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Diffstat (limited to 'src/lib/libcrypto/asn1/bio_ndef.c')
-rw-r--r--src/lib/libcrypto/asn1/bio_ndef.c270
1 files changed, 0 insertions, 270 deletions
diff --git a/src/lib/libcrypto/asn1/bio_ndef.c b/src/lib/libcrypto/asn1/bio_ndef.c
deleted file mode 100644
index 98bb1cd197..0000000000
--- a/src/lib/libcrypto/asn1/bio_ndef.c
+++ /dev/null
@@ -1,270 +0,0 @@
1/* $OpenBSD: bio_ndef.c,v 1.24 2023/07/28 09:58:30 tb Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5/* ====================================================================
6 * Copyright (c) 2008 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 */
54
55#include <stdio.h>
56
57#include <openssl/asn1.h>
58#include <openssl/asn1t.h>
59#include <openssl/bio.h>
60#include <openssl/err.h>
61
62#include "asn1_local.h"
63
64int BIO_asn1_set_prefix(BIO *b, asn1_ps_func *prefix, asn1_ps_func *prefix_free);
65int BIO_asn1_set_suffix(BIO *b, asn1_ps_func *suffix, asn1_ps_func *suffix_free);
66
67/* Experimental NDEF ASN1 BIO support routines */
68
69/* The usage is quite simple, initialize an ASN1 structure,
70 * get a BIO from it then any data written through the BIO
71 * will end up translated to approptiate format on the fly.
72 * The data is streamed out and does *not* need to be
73 * all held in memory at once.
74 *
75 * When the BIO is flushed the output is finalized and any
76 * signatures etc written out.
77 *
78 * The BIO is a 'proper' BIO and can handle non blocking I/O
79 * correctly.
80 *
81 * The usage is simple. The implementation is *not*...
82 */
83
84/* BIO support data stored in the ASN1 BIO ex_arg */
85
86typedef struct ndef_aux_st {
87 /* ASN1 structure this BIO refers to */
88 ASN1_VALUE *val;
89 const ASN1_ITEM *it;
90 /* Top of the BIO chain */
91 BIO *ndef_bio;
92 /* Output BIO */
93 BIO *out;
94 /* Boundary where content is inserted */
95 unsigned char **boundary;
96 /* DER buffer start */
97 unsigned char *derbuf;
98} NDEF_SUPPORT;
99
100static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
101static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
102static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
103static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
104
105BIO *
106BIO_new_NDEF(BIO *out, ASN1_VALUE *val, const ASN1_ITEM *it)
107{
108 NDEF_SUPPORT *ndef_aux = NULL;
109 BIO *asn_bio = NULL, *pop_bio = NULL;
110 const ASN1_AUX *aux = it->funcs;
111 ASN1_STREAM_ARG sarg;
112
113 if (aux == NULL || aux->asn1_cb == NULL) {
114 ASN1error(ASN1_R_STREAMING_NOT_SUPPORTED);
115 goto err;
116 }
117
118 if ((asn_bio = BIO_new(BIO_f_asn1())) == NULL)
119 goto err;
120
121 if (BIO_push(asn_bio, out) == NULL)
122 goto err;
123 pop_bio = asn_bio;
124
125 /*
126 * Set up prefix and suffix handlers first. This ensures that ndef_aux
127 * is freed as part of asn_bio once it is the asn_bio's ex_arg.
128 */
129 if (BIO_asn1_set_prefix(asn_bio, ndef_prefix, ndef_prefix_free) <= 0)
130 goto err;
131 if (BIO_asn1_set_suffix(asn_bio, ndef_suffix, ndef_suffix_free) <= 0)
132 goto err;
133
134 /*
135 * Allocate early to avoid the tricky cleanup after the asn1_cb().
136 * Ownership of ndef_aux is transferred to asn_bio in BIO_ctrl().
137 * Keep a reference to populate it after callback success.
138 */
139 if ((ndef_aux = calloc(1, sizeof(*ndef_aux))) == NULL)
140 goto err;
141 if (BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, ndef_aux) <= 0) {
142 free(ndef_aux);
143 goto err;
144 }
145
146 /*
147 * The callback prepends BIOs to the chain starting at asn_bio for
148 * digest, cipher, etc. The resulting chain starts at sarg.ndef_bio.
149 */
150
151 sarg.out = asn_bio;
152 sarg.ndef_bio = NULL;
153 sarg.boundary = NULL;
154
155 if (aux->asn1_cb(ASN1_OP_STREAM_PRE, &val, it, &sarg) <= 0)
156 goto err;
157
158 ndef_aux->val = val;
159 ndef_aux->it = it;
160 ndef_aux->ndef_bio = sarg.ndef_bio;
161 ndef_aux->boundary = sarg.boundary;
162 ndef_aux->out = asn_bio;
163
164 return sarg.ndef_bio;
165
166 err:
167 BIO_pop(pop_bio);
168 BIO_free(asn_bio);
169
170 return NULL;
171}
172
173static int
174ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
175{
176 NDEF_SUPPORT *ndef_aux;
177 unsigned char *p = NULL;
178 int derlen;
179
180 if (!parg)
181 return 0;
182
183 ndef_aux = *(NDEF_SUPPORT **)parg;
184
185 if ((derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it)) <= 0)
186 return 0;
187
188 ndef_aux->derbuf = p;
189 *pbuf = p;
190
191 if (*ndef_aux->boundary == NULL)
192 return 0;
193
194 *plen = *ndef_aux->boundary - *pbuf;
195
196 return 1;
197}
198
199static int
200ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
201{
202 NDEF_SUPPORT **pndef_aux = parg;
203
204 if (pndef_aux == NULL || *pndef_aux == NULL)
205 return 0;
206
207 free((*pndef_aux)->derbuf);
208 (*pndef_aux)->derbuf = NULL;
209
210 *pbuf = NULL;
211 *plen = 0;
212
213 return 1;
214}
215
216static int
217ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
218{
219 NDEF_SUPPORT **pndef_aux = parg;
220
221 /* Ensure ndef_prefix_free() won't fail, so we won't leak *pndef_aux. */
222 if (pndef_aux == NULL || *pndef_aux == NULL)
223 return 0;
224 if (!ndef_prefix_free(b, pbuf, plen, parg))
225 return 0;
226
227 free(*pndef_aux);
228 *pndef_aux = NULL;
229
230 return 1;
231}
232
233static int
234ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
235{
236 NDEF_SUPPORT *ndef_aux;
237 unsigned char *p = NULL;
238 int derlen;
239 const ASN1_AUX *aux;
240 ASN1_STREAM_ARG sarg;
241
242 if (!parg)
243 return 0;
244
245 ndef_aux = *(NDEF_SUPPORT **)parg;
246
247 aux = ndef_aux->it->funcs;
248
249 /* Finalize structures */
250 sarg.ndef_bio = ndef_aux->ndef_bio;
251 sarg.out = ndef_aux->out;
252 sarg.boundary = ndef_aux->boundary;
253 if (aux->asn1_cb(ASN1_OP_STREAM_POST,
254 &ndef_aux->val, ndef_aux->it, &sarg) <= 0)
255 return 0;
256
257 if ((derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it)) <= 0)
258 return 0;
259
260 ndef_aux->derbuf = p;
261 *pbuf = p;
262
263 if (*ndef_aux->boundary == NULL)
264 return 0;
265
266 *pbuf = *ndef_aux->boundary;
267 *plen = derlen - (*ndef_aux->boundary - ndef_aux->derbuf);
268
269 return 1;
270}
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