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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 : : /* X509_REQ_INFO is handled in an unusual way to get round
65 : : * invalid encodings. Some broken certificate requests don't
66 : : * encode the attributes field if it is empty. This is in
67 : : * violation of PKCS#10 but we need to tolerate it. We do
68 : : * this by making the attributes field OPTIONAL then using
69 : : * the callback to initialise it to an empty STACK.
70 : : *
71 : : * This means that the field will be correctly encoded unless
72 : : * we NULL out the field.
73 : : *
74 : : * As a result we no longer need the req_kludge field because
75 : : * the information is now contained in the attributes field:
76 : : * 1. If it is NULL then it's the invalid omission.
77 : : * 2. If it is empty it is the correct encoding.
78 : : * 3. If it is not empty then some attributes are present.
79 : : *
80 : : */
81 : :
82 : 264 : static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
83 : : void *exarg)
84 : : {
85 : 264 : X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
86 : :
87 [ + + ]: 264 : if(operation == ASN1_OP_NEW_POST) {
88 : 36 : rinf->attributes = sk_X509_ATTRIBUTE_new_null();
89 [ + - ]: 36 : if(!rinf->attributes) return 0;
90 : : }
91 : : return 1;
92 : : }
93 : :
94 : : ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = {
95 : : ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER),
96 : : ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME),
97 : : ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY),
98 : : /* This isn't really OPTIONAL but it gets round invalid
99 : : * encodings
100 : : */
101 : : ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0)
102 : : } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO)
103 : :
104 : 0 : IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO)
105 : :
106 : : ASN1_SEQUENCE_ref(X509_REQ, 0, CRYPTO_LOCK_X509_REQ) = {
107 : : ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO),
108 : : ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR),
109 : : ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING)
110 : : } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ)
111 : :
112 : 518 : IMPLEMENT_ASN1_FUNCTIONS(X509_REQ)
113 : 0 : IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ)
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