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-rw-r--r--src/lib/libcrypto/asn1/a_d2i_fp.c289
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diff --git a/src/lib/libcrypto/asn1/a_d2i_fp.c b/src/lib/libcrypto/asn1/a_d2i_fp.c
deleted file mode 100644
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--- a/src/lib/libcrypto/asn1/a_d2i_fp.c
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@@ -1,289 +0,0 @@
1/* $OpenBSD: a_d2i_fp.c,v 1.17 2021/11/18 15:58:31 tb Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <limits.h>
60#include <stdio.h>
61
62#include <openssl/asn1.h>
63#include <openssl/buffer.h>
64#include <openssl/err.h>
65
66static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb);
67
68#ifndef NO_OLD_ASN1
69
70void *
71ASN1_d2i_fp(void *(*xnew)(void), d2i_of_void *d2i, FILE *in, void **x)
72{
73 BIO *b;
74 void *ret;
75
76 if ((b = BIO_new(BIO_s_file())) == NULL) {
77 ASN1error(ERR_R_BUF_LIB);
78 return (NULL);
79 }
80 BIO_set_fp(b, in, BIO_NOCLOSE);
81 ret = ASN1_d2i_bio(xnew, d2i, b, x);
82 BIO_free(b);
83 return (ret);
84}
85
86void *
87ASN1_d2i_bio(void *(*xnew)(void), d2i_of_void *d2i, BIO *in, void **x)
88{
89 BUF_MEM *b = NULL;
90 const unsigned char *p;
91 void *ret = NULL;
92 int len;
93
94 len = asn1_d2i_read_bio(in, &b);
95 if (len < 0)
96 goto err;
97
98 p = (unsigned char *)b->data;
99 ret = d2i(x, &p, len);
100
101err:
102 if (b != NULL)
103 BUF_MEM_free(b);
104 return (ret);
105}
106
107#endif
108
109void *
110ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x)
111{
112 BUF_MEM *b = NULL;
113 const unsigned char *p;
114 void *ret = NULL;
115 int len;
116
117 len = asn1_d2i_read_bio(in, &b);
118 if (len < 0)
119 goto err;
120
121 p = (const unsigned char *)b->data;
122 ret = ASN1_item_d2i(x, &p, len, it);
123
124err:
125 if (b != NULL)
126 BUF_MEM_free(b);
127 return (ret);
128}
129
130void *
131ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x)
132{
133 BIO *b;
134 char *ret;
135
136 if ((b = BIO_new(BIO_s_file())) == NULL) {
137 ASN1error(ERR_R_BUF_LIB);
138 return (NULL);
139 }
140 BIO_set_fp(b, in, BIO_NOCLOSE);
141 ret = ASN1_item_d2i_bio(it, b, x);
142 BIO_free(b);
143 return (ret);
144}
145
146#define HEADER_SIZE 8
147#define ASN1_CHUNK_INITIAL_SIZE (16 * 1024)
148static int
149asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
150{
151 BUF_MEM *b;
152 unsigned char *p;
153 const unsigned char *q;
154 long slen;
155 int i, inf, tag, xclass;
156 size_t want = HEADER_SIZE;
157 int eos = 0;
158 size_t off = 0;
159 size_t len = 0;
160
161 b = BUF_MEM_new();
162 if (b == NULL) {
163 ASN1error(ERR_R_MALLOC_FAILURE);
164 return -1;
165 }
166
167 ERR_clear_error();
168 for (;;) {
169 if (want >= (len - off)) {
170 want -= (len - off);
171
172 if (len + want < len ||
173 !BUF_MEM_grow_clean(b, len + want)) {
174 ASN1error(ERR_R_MALLOC_FAILURE);
175 goto err;
176 }
177 i = BIO_read(in, &(b->data[len]), want);
178 if ((i < 0) && ((len - off) == 0)) {
179 ASN1error(ASN1_R_NOT_ENOUGH_DATA);
180 goto err;
181 }
182 if (i > 0) {
183 if (len + i < len) {
184 ASN1error(ASN1_R_TOO_LONG);
185 goto err;
186 }
187 len += i;
188 }
189 }
190 /* else data already loaded */
191
192 p = (unsigned char *) & (b->data[off]);
193 q = p;
194 inf = ASN1_get_object(&q, &slen, &tag, &xclass, len - off);
195 if (inf & 0x80) {
196 unsigned long e;
197
198 e = ERR_GET_REASON(ERR_peek_error());
199 if (e != ASN1_R_TOO_LONG)
200 goto err;
201 else
202 ERR_clear_error(); /* clear error */
203 }
204 i = q - p; /* header length */
205 off += i; /* end of data */
206
207 if (inf & 1) {
208 /* no data body so go round again */
209 eos++;
210 if (eos < 0) {
211 ASN1error(ASN1_R_HEADER_TOO_LONG);
212 goto err;
213 }
214 want = HEADER_SIZE;
215 } else if (eos && slen == 0 && tag == V_ASN1_EOC) {
216 /* eos value, so go back and read another header */
217 eos--;
218 if (eos <= 0)
219 break;
220 else
221 want = HEADER_SIZE;
222 } else {
223 /* suck in slen bytes of data */
224 want = slen;
225 if (want > (len - off)) {
226 size_t chunk_max = ASN1_CHUNK_INITIAL_SIZE;
227
228 want -= (len - off);
229 if (want > INT_MAX /* BIO_read takes an int length */ ||
230 len+want < len) {
231 ASN1error(ASN1_R_TOO_LONG);
232 goto err;
233 }
234 while (want > 0) {
235 /*
236 * Read content in chunks of increasing size
237 * so we can return an error for EOF without
238 * having to allocate the entire content length
239 * in one go.
240 */
241 size_t chunk = want > chunk_max ? chunk_max : want;
242
243 if (!BUF_MEM_grow_clean(b, len + chunk)) {
244 ASN1error(ERR_R_MALLOC_FAILURE);
245 goto err;
246 }
247 want -= chunk;
248 while (chunk > 0) {
249 i = BIO_read(in, &(b->data[len]), chunk);
250 if (i <= 0) {
251 ASN1error(ASN1_R_NOT_ENOUGH_DATA);
252 goto err;
253 }
254 /*
255 * This can't overflow because |len+want|
256 * didn't overflow.
257 */
258 len += i;
259 chunk -= i;
260 }
261 if (chunk_max < INT_MAX/2)
262 chunk_max *= 2;
263 }
264 }
265 if (off + slen < off) {
266 ASN1error(ASN1_R_TOO_LONG);
267 goto err;
268 }
269 off += slen;
270 if (eos <= 0) {
271 break;
272 } else
273 want = HEADER_SIZE;
274 }
275 }
276
277 if (off > INT_MAX) {
278 ASN1error(ASN1_R_TOO_LONG);
279 goto err;
280 }
281
282 *pb = b;
283 return off;
284
285err:
286 if (b != NULL)
287 BUF_MEM_free(b);
288 return -1;
289}
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