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diff --git a/src/lib/libcrypto/asn1/p7_lib.c b/src/lib/libcrypto/asn1/p7_lib.c
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1/* crypto/asn1/p7_lib.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#include <openssl/pkcs7.h>
63#include <openssl/objects.h>
64
65#ifdef PKCS7_INDEFINITE_ENCODING
66
67int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
68 {
69 M_ASN1_I2D_vars(a);
70
71 if (a->asn1 != NULL)
72 {
73 if (pp == NULL)
74 return((int)a->length);
75 memcpy(*pp,a->asn1,(int)a->length);
76 *pp+=a->length;
77 return((int)a->length);
78 }
79
80 ret+=4; /* sequence, BER header plus '0 0' end padding */
81 M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
82 if (a->d.ptr != NULL)
83 {
84 ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
85 switch (OBJ_obj2nid(a->type))
86 {
87 case NID_pkcs7_data:
88 M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
89 break;
90 case NID_pkcs7_signed:
91 M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
92 break;
93 case NID_pkcs7_enveloped:
94 M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
95 break;
96 case NID_pkcs7_signedAndEnveloped:
97 M_ASN1_I2D_len(a->d.signed_and_enveloped,
98 i2d_PKCS7_SIGN_ENVELOPE);
99 break;
100 case NID_pkcs7_digest:
101 M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
102 break;
103 case NID_pkcs7_encrypted:
104 M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
105 break;
106 default:
107 M_ASN1_I2D_len(a->d.other,i2d_ASN1_TYPE);
108 break;
109 }
110 }
111 r=ret;
112 if (pp == NULL) return(r);
113 p= *pp;
114 M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
115 M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
116
117 if (a->d.ptr != NULL)
118 {
119 M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
120 switch (OBJ_obj2nid(a->type))
121 {
122 case NID_pkcs7_data:
123 M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
124 break;
125 case NID_pkcs7_signed:
126 M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
127 break;
128 case NID_pkcs7_enveloped:
129 M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
130 break;
131 case NID_pkcs7_signedAndEnveloped:
132 M_ASN1_I2D_put(a->d.signed_and_enveloped,
133 i2d_PKCS7_SIGN_ENVELOPE);
134 break;
135 case NID_pkcs7_digest:
136 M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
137 break;
138 case NID_pkcs7_encrypted:
139 M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
140 break;
141 default:
142 M_ASN1_I2D_put(a->d.other,i2d_ASN1_TYPE);
143 break;
144 }
145 M_ASN1_I2D_INF_seq_end();
146 }
147 M_ASN1_I2D_INF_seq_end();
148 M_ASN1_I2D_finish();
149 }
150
151#else
152
153int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
154 {
155 int explen = 0;
156 M_ASN1_I2D_vars(a);
157
158 if (a->asn1 != NULL)
159 {
160 if (pp == NULL)
161 return((int)a->length);
162 memcpy(*pp,a->asn1,(int)a->length);
163 *pp+=a->length;
164 return((int)a->length);
165 }
166
167 M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
168 if (a->d.ptr != NULL)
169 {
170 /* Save current length */
171 r = ret;
172 switch (OBJ_obj2nid(a->type))
173 {
174 case NID_pkcs7_data:
175 M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
176 break;
177 case NID_pkcs7_signed:
178 M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
179 break;
180 case NID_pkcs7_enveloped:
181 M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
182 break;
183 case NID_pkcs7_signedAndEnveloped:
184 M_ASN1_I2D_len(a->d.signed_and_enveloped,
185 i2d_PKCS7_SIGN_ENVELOPE);
186 break;
187 case NID_pkcs7_digest:
188 M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
189 break;
190 case NID_pkcs7_encrypted:
191 M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
192 break;
193 default:
194 M_ASN1_I2D_len(a->d.other,i2d_ASN1_TYPE);
195 break;
196 }
197 /* Work out explicit tag content size */
198 explen = ret - r;
199 /* Work out explicit tag size: Note: ASN1_object_size
200 * includes the content length.
201 */
202 ret = r + ASN1_object_size(1, explen, 0);
203 }
204
205 M_ASN1_I2D_seq_total();
206
207 M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
208
209 if (a->d.ptr != NULL)
210 {
211 ASN1_put_object(&p, 1, explen, 0, V_ASN1_CONTEXT_SPECIFIC);
212 switch (OBJ_obj2nid(a->type))
213 {
214 case NID_pkcs7_data:
215 M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
216 break;
217 case NID_pkcs7_signed:
218 M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
219 break;
220 case NID_pkcs7_enveloped:
221 M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
222 break;
223 case NID_pkcs7_signedAndEnveloped:
224 M_ASN1_I2D_put(a->d.signed_and_enveloped,
225 i2d_PKCS7_SIGN_ENVELOPE);
226 break;
227 case NID_pkcs7_digest:
228 M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
229 break;
230 case NID_pkcs7_encrypted:
231 M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
232 break;
233 default:
234 M_ASN1_I2D_put(a->d.other,i2d_ASN1_TYPE);
235 break;
236 }
237 }
238 M_ASN1_I2D_finish();
239 }
240
241#endif
242
243PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length)
244 {
245 M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);
246
247 if ((a != NULL) && ((*a) != NULL))
248 {
249 if ((*a)->asn1 != NULL)
250 {
251 OPENSSL_free((*a)->asn1);
252 (*a)->asn1=NULL;
253 }
254 (*a)->length=0;
255 }
256
257 M_ASN1_D2I_Init();
258 M_ASN1_D2I_start_sequence();
259 M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
260 if (!M_ASN1_D2I_end_sequence())
261 {
262 int Tinf,Ttag,Tclass;
263 long Tlen;
264
265 if (M_ASN1_next != (V_ASN1_CONSTRUCTED|
266 V_ASN1_CONTEXT_SPECIFIC|0))
267 {
268 c.error=ASN1_R_BAD_PKCS7_CONTENT;
269 c.line=__LINE__;
270 goto err;
271 }
272
273 ret->detached=0;
274
275 c.q=c.p;
276 Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass,
277 (c.inf & 1)?(length+ *pp-c.q):c.slen);
278 if (Tinf & 0x80) { c.line=__LINE__; goto err; }
279 c.slen-=(c.p-c.q);
280
281 switch (OBJ_obj2nid(ret->type))
282 {
283 case NID_pkcs7_data:
284 M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
285 break;
286 case NID_pkcs7_signed:
287 M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED);
288 if (ret->d.sign->contents->d.ptr == NULL)
289 ret->detached=1;
290 break;
291 case NID_pkcs7_enveloped:
292 M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
293 break;
294 case NID_pkcs7_signedAndEnveloped:
295 M_ASN1_D2I_get(ret->d.signed_and_enveloped,
296 d2i_PKCS7_SIGN_ENVELOPE);
297 break;
298 case NID_pkcs7_digest:
299 M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
300 break;
301 case NID_pkcs7_encrypted:
302 M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
303 break;
304 default:
305 M_ASN1_D2I_get(ret->d.other,d2i_ASN1_TYPE);
306 break;
307 }
308 if (Tinf == (1|V_ASN1_CONSTRUCTED))
309 {
310 c.q=c.p;
311 if (!ASN1_check_infinite_end(&c.p,c.slen))
312 {
313 c.error=ERR_R_MISSING_ASN1_EOS;
314 c.line=__LINE__;
315 goto err;
316 }
317 c.slen-=(c.p-c.q);
318 }
319 }
320 else
321 ret->detached=1;
322
323 M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
324 }
325
326PKCS7 *PKCS7_new(void)
327 {
328 PKCS7 *ret=NULL;
329 ASN1_CTX c;
330
331 M_ASN1_New_Malloc(ret,PKCS7);
332 ret->type=OBJ_nid2obj(NID_undef);
333 ret->asn1=NULL;
334 ret->length=0;
335 ret->detached=0;
336 ret->d.ptr=NULL;
337 return(ret);
338 M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
339 }
340
341void PKCS7_free(PKCS7 *a)
342 {
343 if (a == NULL) return;
344
345 PKCS7_content_free(a);
346 if (a->type != NULL)
347 {
348 ASN1_OBJECT_free(a->type);
349 }
350 OPENSSL_free(a);
351 }
352
353void PKCS7_content_free(PKCS7 *a)
354 {
355 if(a == NULL)
356 return;
357
358 if (a->asn1 != NULL) OPENSSL_free(a->asn1);
359
360 if (a->d.ptr != NULL)
361 {
362 if (a->type == NULL) return;
363
364 switch (OBJ_obj2nid(a->type))
365 {
366 case NID_pkcs7_data:
367 M_ASN1_OCTET_STRING_free(a->d.data);
368 break;
369 case NID_pkcs7_signed:
370 PKCS7_SIGNED_free(a->d.sign);
371 break;
372 case NID_pkcs7_enveloped:
373 PKCS7_ENVELOPE_free(a->d.enveloped);
374 break;
375 case NID_pkcs7_signedAndEnveloped:
376 PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
377 break;
378 case NID_pkcs7_digest:
379 PKCS7_DIGEST_free(a->d.digest);
380 break;
381 case NID_pkcs7_encrypted:
382 PKCS7_ENCRYPT_free(a->d.encrypted);
383 break;
384 default:
385 ASN1_TYPE_free(a->d.other);
386 break;
387 }
388 }
389 a->d.ptr=NULL;
390 }
391
392IMPLEMENT_STACK_OF(PKCS7)
393IMPLEMENT_ASN1_SET_OF(PKCS7)
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-01 16:59:24 +0000