1 /* crypto/asn1/p7_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <openssl/asn1_mac.h>
62 #include <openssl/pkcs7.h>
63 #include <openssl/objects.h>
65 #ifdef PKCS7_INDEFINITE_ENCODING
67 int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
74 return((int)a->length);
75 memcpy(*pp,a->asn1,(int)a->length);
77 return((int)a->length);
80 ret+=4; /* sequence, BER header plus '0 0' end padding */
81 M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
84 ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
85 switch (OBJ_obj2nid(a->type))
88 M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
90 case NID_pkcs7_signed:
91 M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
93 case NID_pkcs7_enveloped:
94 M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
96 case NID_pkcs7_signedAndEnveloped:
97 M_ASN1_I2D_len(a->d.signed_and_enveloped,
98 i2d_PKCS7_SIGN_ENVELOPE);
100 case NID_pkcs7_digest:
101 M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
103 case NID_pkcs7_encrypted:
104 M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
107 M_ASN1_I2D_len(a->d.other,i2d_ASN1_TYPE);
112 if (pp == NULL) return(r);
114 M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
115 M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
117 if (a->d.ptr != NULL)
119 M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
120 switch (OBJ_obj2nid(a->type))
123 M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
125 case NID_pkcs7_signed:
126 M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
128 case NID_pkcs7_enveloped:
129 M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
131 case NID_pkcs7_signedAndEnveloped:
132 M_ASN1_I2D_put(a->d.signed_and_enveloped,
133 i2d_PKCS7_SIGN_ENVELOPE);
135 case NID_pkcs7_digest:
136 M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
138 case NID_pkcs7_encrypted:
139 M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
142 M_ASN1_I2D_put(a->d.other,i2d_ASN1_TYPE);
145 M_ASN1_I2D_INF_seq_end();
147 M_ASN1_I2D_INF_seq_end();
153 int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
161 return((int)a->length);
162 memcpy(*pp,a->asn1,(int)a->length);
164 return((int)a->length);
167 M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
168 if (a->d.ptr != NULL)
170 /* Save current length */
172 switch (OBJ_obj2nid(a->type))
175 M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
177 case NID_pkcs7_signed:
178 M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
180 case NID_pkcs7_enveloped:
181 M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
183 case NID_pkcs7_signedAndEnveloped:
184 M_ASN1_I2D_len(a->d.signed_and_enveloped,
185 i2d_PKCS7_SIGN_ENVELOPE);
187 case NID_pkcs7_digest:
188 M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
190 case NID_pkcs7_encrypted:
191 M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
194 M_ASN1_I2D_len(a->d.other,i2d_ASN1_TYPE);
197 /* Work out explicit tag content size */
199 /* Work out explicit tag size: Note: ASN1_object_size
200 * includes the content length.
202 ret = r + ASN1_object_size(1, explen, 0);
205 M_ASN1_I2D_seq_total();
207 M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
209 if (a->d.ptr != NULL)
211 ASN1_put_object(&p, 1, explen, 0, V_ASN1_CONTEXT_SPECIFIC);
212 switch (OBJ_obj2nid(a->type))
215 M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
217 case NID_pkcs7_signed:
218 M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
220 case NID_pkcs7_enveloped:
221 M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
223 case NID_pkcs7_signedAndEnveloped:
224 M_ASN1_I2D_put(a->d.signed_and_enveloped,
225 i2d_PKCS7_SIGN_ENVELOPE);
227 case NID_pkcs7_digest:
228 M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
230 case NID_pkcs7_encrypted:
231 M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
234 M_ASN1_I2D_put(a->d.other,i2d_ASN1_TYPE);
243 PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length)
245 M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);
247 if ((a != NULL) && ((*a) != NULL))
249 if ((*a)->asn1 != NULL)
251 OPENSSL_free((*a)->asn1);
258 M_ASN1_D2I_start_sequence();
259 M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
260 if (!M_ASN1_D2I_end_sequence())
262 int Tinf,Ttag,Tclass;
265 if (M_ASN1_next != (V_ASN1_CONSTRUCTED|
266 V_ASN1_CONTEXT_SPECIFIC|0))
268 c.error=ASN1_R_BAD_PKCS7_CONTENT;
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; }
281 switch (OBJ_obj2nid(ret->type))
284 M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
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)
291 case NID_pkcs7_enveloped:
292 M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
294 case NID_pkcs7_signedAndEnveloped:
295 M_ASN1_D2I_get(ret->d.signed_and_enveloped,
296 d2i_PKCS7_SIGN_ENVELOPE);
298 case NID_pkcs7_digest:
299 M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
301 case NID_pkcs7_encrypted:
302 M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
305 M_ASN1_D2I_get(ret->d.other,d2i_ASN1_TYPE);
308 if (Tinf == (1|V_ASN1_CONSTRUCTED))
311 if (!ASN1_check_infinite_end(&c.p,c.slen))
313 c.error=ERR_R_MISSING_ASN1_EOS;
323 M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
326 PKCS7 *PKCS7_new(void)
331 M_ASN1_New_Malloc(ret,PKCS7);
332 ret->type=OBJ_nid2obj(NID_undef);
338 M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
341 void PKCS7_free(PKCS7 *a)
343 if (a == NULL) return;
345 PKCS7_content_free(a);
348 ASN1_OBJECT_free(a->type);
353 void PKCS7_content_free(PKCS7 *a)
358 if (a->asn1 != NULL) OPENSSL_free(a->asn1);
360 if (a->d.ptr != NULL)
362 if (a->type == NULL) return;
364 switch (OBJ_obj2nid(a->type))
367 M_ASN1_OCTET_STRING_free(a->d.data);
369 case NID_pkcs7_signed:
370 PKCS7_SIGNED_free(a->d.sign);
372 case NID_pkcs7_enveloped:
373 PKCS7_ENVELOPE_free(a->d.enveloped);
375 case NID_pkcs7_signedAndEnveloped:
376 PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
378 case NID_pkcs7_digest:
379 PKCS7_DIGEST_free(a->d.digest);
381 case NID_pkcs7_encrypted:
382 PKCS7_ENCRYPT_free(a->d.encrypted);
385 ASN1_TYPE_free(a->d.other);
392 IMPLEMENT_STACK_OF(PKCS7)
393 IMPLEMENT_ASN1_SET_OF(PKCS7)