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diff --git a/src/lib/libcrypto/asn1/a_bytes.c b/src/lib/libcrypto/asn1/a_bytes.c
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1/* crypto/asn1/a_bytes.c */
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 <stdio.h>
60#include "cryptlib.h"
61#include <openssl/asn1_mac.h>
62
63static unsigned long tag2bit[32]={
640, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */
65B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,/* tags 4- 7 */
66B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,/* tags 8-11 */
67B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */
680, 0, B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING,
69B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING,0,
700,B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING,
71B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN,
72 };
73
74static int asn1_collate_primitive(ASN1_STRING *a, ASN1_CTX *c);
75/* type is a 'bitmap' of acceptable string types.
76 */
77ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, unsigned char **pp,
78 long length, int type)
79 {
80 ASN1_STRING *ret=NULL;
81 unsigned char *p,*s;
82 long len;
83 int inf,tag,xclass;
84 int i=0;
85
86 p= *pp;
87 inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
88 if (inf & 0x80) goto err;
89
90 if (tag >= 32)
91 {
92 i=ASN1_R_TAG_VALUE_TOO_HIGH;;
93 goto err;
94 }
95 if (!(tag2bit[tag] & type))
96 {
97 i=ASN1_R_WRONG_TYPE;
98 goto err;
99 }
100
101 /* If a bit-string, exit early */
102 if (tag == V_ASN1_BIT_STRING)
103 return(d2i_ASN1_BIT_STRING(a,pp,length));
104
105 if ((a == NULL) || ((*a) == NULL))
106 {
107 if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
108 }
109 else
110 ret=(*a);
111
112 if (len != 0)
113 {
114 s=(unsigned char *)OPENSSL_malloc((int)len+1);
115 if (s == NULL)
116 {
117 i=ERR_R_MALLOC_FAILURE;
118 goto err;
119 }
120 memcpy(s,p,(int)len);
121 s[len]='\0';
122 p+=len;
123 }
124 else
125 s=NULL;
126
127 if (ret->data != NULL) OPENSSL_free(ret->data);
128 ret->length=(int)len;
129 ret->data=s;
130 ret->type=tag;
131 if (a != NULL) (*a)=ret;
132 *pp=p;
133 return(ret);
134err:
135 ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i);
136 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
137 ASN1_STRING_free(ret);
138 return(NULL);
139 }
140
141int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass)
142 {
143 int ret,r,constructed;
144 unsigned char *p;
145
146 if (a == NULL) return(0);
147
148 if (tag == V_ASN1_BIT_STRING)
149 return(i2d_ASN1_BIT_STRING(a,pp));
150
151 ret=a->length;
152 r=ASN1_object_size(0,ret,tag);
153 if (pp == NULL) return(r);
154 p= *pp;
155
156 if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET))
157 constructed=1;
158 else
159 constructed=0;
160 ASN1_put_object(&p,constructed,ret,tag,xclass);
161 memcpy(p,a->data,a->length);
162 p+=a->length;
163 *pp= p;
164 return(r);
165 }
166
167ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, unsigned char **pp, long length,
168 int Ptag, int Pclass)
169 {
170 ASN1_STRING *ret=NULL;
171 unsigned char *p,*s;
172 long len;
173 int inf,tag,xclass;
174 int i=0;
175
176 if ((a == NULL) || ((*a) == NULL))
177 {
178 if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
179 }
180 else
181 ret=(*a);
182
183 p= *pp;
184 inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
185 if (inf & 0x80)
186 {
187 i=ASN1_R_BAD_OBJECT_HEADER;
188 goto err;
189 }
190
191 if (tag != Ptag)
192 {
193 i=ASN1_R_WRONG_TAG;
194 goto err;
195 }
196
197 if (inf & V_ASN1_CONSTRUCTED)
198 {
199 ASN1_CTX c;
200
201 c.pp=pp;
202 c.p=p;
203 c.inf=inf;
204 c.slen=len;
205 c.tag=Ptag;
206 c.xclass=Pclass;
207 c.max=(length == 0)?0:(p+length);
208 if (!asn1_collate_primitive(ret,&c))
209 goto err;
210 else
211 {
212 p=c.p;
213 }
214 }
215 else
216 {
217 if (len != 0)
218 {
219 if ((ret->length < len) || (ret->data == NULL))
220 {
221 if (ret->data != NULL) OPENSSL_free(ret->data);
222 s=(unsigned char *)OPENSSL_malloc((int)len + 1);
223 if (s == NULL)
224 {
225 i=ERR_R_MALLOC_FAILURE;
226 goto err;
227 }
228 }
229 else
230 s=ret->data;
231 memcpy(s,p,(int)len);
232 s[len] = '\0';
233 p+=len;
234 }
235 else
236 {
237 s=NULL;
238 if (ret->data != NULL) OPENSSL_free(ret->data);
239 }
240
241 ret->length=(int)len;
242 ret->data=s;
243 ret->type=Ptag;
244 }
245
246 if (a != NULL) (*a)=ret;
247 *pp=p;
248 return(ret);
249err:
250 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
251 ASN1_STRING_free(ret);
252 ASN1err(ASN1_F_D2I_ASN1_BYTES,i);
253 return(NULL);
254 }
255
256
257/* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse
258 * them into the one structure that is then returned */
259/* There have been a few bug fixes for this function from
260 * Paul Keogh <paul.keogh@sse.ie>, many thanks to him */
261static int asn1_collate_primitive(ASN1_STRING *a, ASN1_CTX *c)
262 {
263 ASN1_STRING *os=NULL;
264 BUF_MEM b;
265 int num;
266
267 b.length=0;
268 b.max=0;
269 b.data=NULL;
270
271 if (a == NULL)
272 {
273 c->error=ERR_R_PASSED_NULL_PARAMETER;
274 goto err;
275 }
276
277 num=0;
278 for (;;)
279 {
280 if (c->inf & 1)
281 {
282 c->eos=ASN1_check_infinite_end(&c->p,
283 (long)(c->max-c->p));
284 if (c->eos) break;
285 }
286 else
287 {
288 if (c->slen <= 0) break;
289 }
290
291 c->q=c->p;
292 if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass)
293 == NULL)
294 {
295 c->error=ERR_R_ASN1_LIB;
296 goto err;
297 }
298
299 if (!BUF_MEM_grow(&b,num+os->length))
300 {
301 c->error=ERR_R_BUF_LIB;
302 goto err;
303 }
304 memcpy(&(b.data[num]),os->data,os->length);
305 if (!(c->inf & 1))
306 c->slen-=(c->p-c->q);
307 num+=os->length;
308 }
309
310 if (!asn1_Finish(c)) goto err;
311
312 a->length=num;
313 if (a->data != NULL) OPENSSL_free(a->data);
314 a->data=(unsigned char *)b.data;
315 if (os != NULL) ASN1_STRING_free(os);
316 return(1);
317err:
318 ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error);
319 if (os != NULL) ASN1_STRING_free(os);
320 if (b.data != NULL) OPENSSL_free(b.data);
321 return(0);
322 }
323
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