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 /* ASN1err(ASN1_F_D2I_PKCS7,ASN1_R_BAD_PKCS7_CONTENT);
65 * ASN1err(ASN1_F_I2D_PKCS7,ASN1_R_BAD_PKCS7_TYPE);
66 * ASN1err(ASN1_F_PKCS7_NEW,ASN1_R_BAD_PKCS7_TYPE);
69 int i2d_PKCS7(PKCS7
*a
, unsigned char **pp
)
76 return((int)a
->length
);
77 memcpy(*pp
,a
->asn1
,(int)a
->length
);
79 return((int)a
->length
);
82 ret
+=4; /* sequence, BER header plus '0 0' end padding */
83 M_ASN1_I2D_len(a
->type
,i2d_ASN1_OBJECT
);
86 ret
+=4; /* explicit tag [ 0 ] BER plus '0 0' */
87 switch (OBJ_obj2nid(a
->type
))
90 M_ASN1_I2D_len(a
->d
.data
,i2d_ASN1_OCTET_STRING
);
92 case NID_pkcs7_signed
:
93 M_ASN1_I2D_len(a
->d
.sign
,i2d_PKCS7_SIGNED
);
95 case NID_pkcs7_enveloped
:
96 M_ASN1_I2D_len(a
->d
.enveloped
,i2d_PKCS7_ENVELOPE
);
98 case NID_pkcs7_signedAndEnveloped
:
99 M_ASN1_I2D_len(a
->d
.signed_and_enveloped
,
100 i2d_PKCS7_SIGN_ENVELOPE
);
102 case NID_pkcs7_digest
:
103 M_ASN1_I2D_len(a
->d
.digest
,i2d_PKCS7_DIGEST
);
105 case NID_pkcs7_encrypted
:
106 M_ASN1_I2D_len(a
->d
.encrypted
,i2d_PKCS7_ENCRYPT
);
113 if (pp
== NULL
) return(r
);
115 M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE
,V_ASN1_UNIVERSAL
);
116 M_ASN1_I2D_put(a
->type
,i2d_ASN1_OBJECT
);
118 if (a
->d
.ptr
!= NULL
)
120 M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC
);
121 switch (OBJ_obj2nid(a
->type
))
124 M_ASN1_I2D_put(a
->d
.data
,i2d_ASN1_OCTET_STRING
);
126 case NID_pkcs7_signed
:
127 M_ASN1_I2D_put(a
->d
.sign
,i2d_PKCS7_SIGNED
);
129 case NID_pkcs7_enveloped
:
130 M_ASN1_I2D_put(a
->d
.enveloped
,i2d_PKCS7_ENVELOPE
);
132 case NID_pkcs7_signedAndEnveloped
:
133 M_ASN1_I2D_put(a
->d
.signed_and_enveloped
,
134 i2d_PKCS7_SIGN_ENVELOPE
);
136 case NID_pkcs7_digest
:
137 M_ASN1_I2D_put(a
->d
.digest
,i2d_PKCS7_DIGEST
);
139 case NID_pkcs7_encrypted
:
140 M_ASN1_I2D_put(a
->d
.encrypted
,i2d_PKCS7_ENCRYPT
);
145 M_ASN1_I2D_INF_seq_end();
147 M_ASN1_I2D_INF_seq_end();
151 PKCS7
*d2i_PKCS7(PKCS7
**a
, unsigned char **pp
, long length
)
153 M_ASN1_D2I_vars(a
,PKCS7
*,PKCS7_new
);
155 if ((a
!= NULL
) && ((*a
) != NULL
))
157 if ((*a
)->asn1
!= NULL
)
159 Free((char *)(*a
)->asn1
);
166 M_ASN1_D2I_start_sequence();
167 M_ASN1_D2I_get(ret
->type
,d2i_ASN1_OBJECT
);
168 if (!M_ASN1_D2I_end_sequence())
170 int Tinf
,Ttag
,Tclass
;
173 if (M_ASN1_next
!= (V_ASN1_CONSTRUCTED
|
174 V_ASN1_CONTEXT_SPECIFIC
|0))
176 c
.error
=ASN1_R_BAD_PKCS7_CONTENT
;
184 Tinf
=ASN1_get_object(&c
.p
,&Tlen
,&Ttag
,&Tclass
,
185 (c
.inf
& 1)?(length
+ *pp
-c
.q
):c
.slen
);
186 if (Tinf
& 0x80) { c
.line
=__LINE__
; goto err
; }
189 switch (OBJ_obj2nid(ret
->type
))
192 M_ASN1_D2I_get(ret
->d
.data
,d2i_ASN1_OCTET_STRING
);
194 case NID_pkcs7_signed
:
195 M_ASN1_D2I_get(ret
->d
.sign
,d2i_PKCS7_SIGNED
);
196 if (ret
->d
.sign
->contents
->d
.ptr
== NULL
)
199 case NID_pkcs7_enveloped
:
200 M_ASN1_D2I_get(ret
->d
.enveloped
,d2i_PKCS7_ENVELOPE
);
202 case NID_pkcs7_signedAndEnveloped
:
203 M_ASN1_D2I_get(ret
->d
.signed_and_enveloped
,
204 d2i_PKCS7_SIGN_ENVELOPE
);
206 case NID_pkcs7_digest
:
207 M_ASN1_D2I_get(ret
->d
.digest
,d2i_PKCS7_DIGEST
);
209 case NID_pkcs7_encrypted
:
210 M_ASN1_D2I_get(ret
->d
.encrypted
,d2i_PKCS7_ENCRYPT
);
213 c
.error
=ASN1_R_BAD_PKCS7_TYPE
;
218 if (Tinf
== (1|V_ASN1_CONSTRUCTED
))
220 if (!ASN1_check_infinite_end(&c
.p
,c
.slen
))
222 c
.error
=ERR_R_MISSING_ASN1_EOS
;
231 M_ASN1_D2I_Finish(a
,PKCS7_free
,ASN1_F_D2I_PKCS7
);
234 PKCS7
*PKCS7_new(void)
239 M_ASN1_New_Malloc(ret
,PKCS7
);
240 ret
->type
=OBJ_nid2obj(NID_undef
);
246 M_ASN1_New_Error(ASN1_F_PKCS7_NEW
);
249 void PKCS7_free(PKCS7
*a
)
251 if (a
== NULL
) return;
253 PKCS7_content_free(a
);
256 ASN1_OBJECT_free(a
->type
);
258 Free((char *)(char *)a
);
261 void PKCS7_content_free(PKCS7
*a
)
266 if (a
->asn1
!= NULL
) Free((char *)a
->asn1
);
268 if (a
->d
.ptr
!= NULL
)
270 if (a
->type
== NULL
) return;
272 switch (OBJ_obj2nid(a
->type
))
275 ASN1_OCTET_STRING_free(a
->d
.data
);
277 case NID_pkcs7_signed
:
278 PKCS7_SIGNED_free(a
->d
.sign
);
280 case NID_pkcs7_enveloped
:
281 PKCS7_ENVELOPE_free(a
->d
.enveloped
);
283 case NID_pkcs7_signedAndEnveloped
:
284 PKCS7_SIGN_ENVELOPE_free(a
->d
.signed_and_enveloped
);
286 case NID_pkcs7_digest
:
287 PKCS7_DIGEST_free(a
->d
.digest
);
289 case NID_pkcs7_encrypted
:
290 PKCS7_ENCRYPT_free(a
->d
.encrypted
);