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/objects.h>
64 int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
71 return((int)a->length);
72 memcpy(*pp,a->asn1,(int)a->length);
74 return((int)a->length);
77 ret+=4; /* sequence, BER header plus '0 0' end padding */
78 M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
81 ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
82 switch (OBJ_obj2nid(a->type))
85 M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
87 case NID_pkcs7_signed:
88 M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
90 case NID_pkcs7_enveloped:
91 M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
93 case NID_pkcs7_signedAndEnveloped:
94 M_ASN1_I2D_len(a->d.signed_and_enveloped,
95 i2d_PKCS7_SIGN_ENVELOPE);
97 case NID_pkcs7_digest:
98 M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
100 case NID_pkcs7_encrypted:
101 M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
108 if (pp == NULL) return(r);
110 M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
111 M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
113 if (a->d.ptr != NULL)
115 M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
116 switch (OBJ_obj2nid(a->type))
119 M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
121 case NID_pkcs7_signed:
122 M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
124 case NID_pkcs7_enveloped:
125 M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
127 case NID_pkcs7_signedAndEnveloped:
128 M_ASN1_I2D_put(a->d.signed_and_enveloped,
129 i2d_PKCS7_SIGN_ENVELOPE);
131 case NID_pkcs7_digest:
132 M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
134 case NID_pkcs7_encrypted:
135 M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
140 M_ASN1_I2D_INF_seq_end();
142 M_ASN1_I2D_INF_seq_end();
146 PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length)
148 M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);
150 if ((a != NULL) && ((*a) != NULL))
152 if ((*a)->asn1 != NULL)
154 Free((char *)(*a)->asn1);
161 M_ASN1_D2I_start_sequence();
162 M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
163 if (!M_ASN1_D2I_end_sequence())
165 int Tinf,Ttag,Tclass;
168 if (M_ASN1_next != (V_ASN1_CONSTRUCTED|
169 V_ASN1_CONTEXT_SPECIFIC|0))
171 c.error=ASN1_R_BAD_PKCS7_CONTENT;
179 Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass,
180 (c.inf & 1)?(length+ *pp-c.q):c.slen);
181 if (Tinf & 0x80) { c.line=__LINE__; goto err; }
184 switch (OBJ_obj2nid(ret->type))
187 M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
189 case NID_pkcs7_signed:
190 M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED);
191 if (ret->d.sign->contents->d.ptr == NULL)
194 case NID_pkcs7_enveloped:
195 M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
197 case NID_pkcs7_signedAndEnveloped:
198 M_ASN1_D2I_get(ret->d.signed_and_enveloped,
199 d2i_PKCS7_SIGN_ENVELOPE);
201 case NID_pkcs7_digest:
202 M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
204 case NID_pkcs7_encrypted:
205 M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
208 c.error=ASN1_R_BAD_PKCS7_TYPE;
213 if (Tinf == (1|V_ASN1_CONSTRUCTED))
215 if (!ASN1_check_infinite_end(&c.p,c.slen))
217 c.error=ERR_R_MISSING_ASN1_EOS;
226 M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
229 PKCS7 *PKCS7_new(void)
234 M_ASN1_New_Malloc(ret,PKCS7);
235 ret->type=OBJ_nid2obj(NID_undef);
241 M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
244 void PKCS7_free(PKCS7 *a)
246 if (a == NULL) return;
248 PKCS7_content_free(a);
251 ASN1_OBJECT_free(a->type);
253 Free((char *)(char *)a);
256 void PKCS7_content_free(PKCS7 *a)
261 if (a->asn1 != NULL) Free((char *)a->asn1);
263 if (a->d.ptr != NULL)
265 if (a->type == NULL) return;
267 switch (OBJ_obj2nid(a->type))
270 ASN1_OCTET_STRING_free(a->d.data);
272 case NID_pkcs7_signed:
273 PKCS7_SIGNED_free(a->d.sign);
275 case NID_pkcs7_enveloped:
276 PKCS7_ENVELOPE_free(a->d.enveloped);
278 case NID_pkcs7_signedAndEnveloped:
279 PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
281 case NID_pkcs7_digest:
282 PKCS7_DIGEST_free(a->d.digest);
284 case NID_pkcs7_encrypted:
285 PKCS7_ENCRYPT_free(a->d.encrypted);