Line data Source code
1 : /* crypto/asn1/x_req.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/asn1t.h>
62 : #include <openssl/x509.h>
63 :
64 : /*-
65 : * X509_REQ_INFO is handled in an unusual way to get round
66 : * invalid encodings. Some broken certificate requests don't
67 : * encode the attributes field if it is empty. This is in
68 : * violation of PKCS#10 but we need to tolerate it. We do
69 : * this by making the attributes field OPTIONAL then using
70 : * the callback to initialise it to an empty STACK.
71 : *
72 : * This means that the field will be correctly encoded unless
73 : * we NULL out the field.
74 : *
75 : * As a result we no longer need the req_kludge field because
76 : * the information is now contained in the attributes field:
77 : * 1. If it is NULL then it's the invalid omission.
78 : * 2. If it is empty it is the correct encoding.
79 : * 3. If it is not empty then some attributes are present.
80 : *
81 : */
82 :
83 0 : static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
84 : void *exarg)
85 : {
86 0 : X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
87 :
88 0 : if (operation == ASN1_OP_NEW_POST) {
89 0 : rinf->attributes = sk_X509_ATTRIBUTE_new_null();
90 0 : if (!rinf->attributes)
91 : return 0;
92 : }
93 : return 1;
94 : }
95 :
96 : ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = {
97 : ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER),
98 : ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME),
99 : ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY),
100 : /* This isn't really OPTIONAL but it gets round invalid
101 : * encodings
102 : */
103 : ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0)
104 : } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO)
105 :
106 0 : IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO)
107 :
108 : ASN1_SEQUENCE_ref(X509_REQ, 0, CRYPTO_LOCK_X509_REQ) = {
109 : ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO),
110 : ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR),
111 : ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING)
112 : } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ)
113 :
114 0 : IMPLEMENT_ASN1_FUNCTIONS(X509_REQ)
115 :
116 0 : IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ)
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