/src/openssl111/crypto/x509/x_req.c
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1 | | /* |
2 | | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | | * |
4 | | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | | * this file except in compliance with the License. You can obtain a copy |
6 | | * in the file LICENSE in the source distribution or at |
7 | | * https://www.openssl.org/source/license.html |
8 | | */ |
9 | | |
10 | | #include <stdio.h> |
11 | | #include "internal/cryptlib.h" |
12 | | #include <openssl/asn1t.h> |
13 | | #include <openssl/x509.h> |
14 | | #include "crypto/x509.h" |
15 | | |
16 | | /*- |
17 | | * X509_REQ_INFO is handled in an unusual way to get round |
18 | | * invalid encodings. Some broken certificate requests don't |
19 | | * encode the attributes field if it is empty. This is in |
20 | | * violation of PKCS#10 but we need to tolerate it. We do |
21 | | * this by making the attributes field OPTIONAL then using |
22 | | * the callback to initialise it to an empty STACK. |
23 | | * |
24 | | * This means that the field will be correctly encoded unless |
25 | | * we NULL out the field. |
26 | | * |
27 | | * As a result we no longer need the req_kludge field because |
28 | | * the information is now contained in the attributes field: |
29 | | * 1. If it is NULL then it's the invalid omission. |
30 | | * 2. If it is empty it is the correct encoding. |
31 | | * 3. If it is not empty then some attributes are present. |
32 | | * |
33 | | */ |
34 | | |
35 | | static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
36 | | void *exarg) |
37 | 0 | { |
38 | 0 | X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; |
39 | |
|
40 | 0 | if (operation == ASN1_OP_NEW_POST) { |
41 | 0 | rinf->attributes = sk_X509_ATTRIBUTE_new_null(); |
42 | 0 | if (!rinf->attributes) |
43 | 0 | return 0; |
44 | 0 | } |
45 | 0 | return 1; |
46 | 0 | } |
47 | | |
48 | | ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { |
49 | | ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), |
50 | | ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), |
51 | | ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), |
52 | | /* This isn't really OPTIONAL but it gets round invalid |
53 | | * encodings |
54 | | */ |
55 | | ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) |
56 | | } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) |
57 | | |
58 | | IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) |
59 | | |
60 | | ASN1_SEQUENCE_ref(X509_REQ, 0) = { |
61 | | ASN1_EMBED(X509_REQ, req_info, X509_REQ_INFO), |
62 | | ASN1_EMBED(X509_REQ, sig_alg, X509_ALGOR), |
63 | | ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) |
64 | | } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) |
65 | | |
66 | | IMPLEMENT_ASN1_FUNCTIONS(X509_REQ) |
67 | | |
68 | | IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) |