1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (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 | { |
38 | X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; |
39 | |
40 | if (operation == ASN1_OP_NEW_POST) { |
41 | rinf->attributes = sk_X509_ATTRIBUTE_new_null(); |
42 | if (!rinf->attributes) |
43 | return 0; |
44 | } |
45 | return 1; |
46 | } |
47 | |
48 | static int req_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
49 | void *exarg) |
50 | { |
51 | #ifndef OPENSSL_NO_SM2 |
52 | X509_REQ *ret = (X509_REQ *)*pval; |
53 | |
54 | switch (operation) { |
55 | case ASN1_OP_D2I_PRE: |
56 | ASN1_OCTET_STRING_free(ret->sm2_id); |
57 | /* fall thru */ |
58 | case ASN1_OP_NEW_POST: |
59 | ret->sm2_id = NULL; |
60 | break; |
61 | |
62 | case ASN1_OP_FREE_POST: |
63 | ASN1_OCTET_STRING_free(ret->sm2_id); |
64 | break; |
65 | } |
66 | #endif |
67 | |
68 | return 1; |
69 | } |
70 | |
71 | ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { |
72 | ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), |
73 | ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), |
74 | ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), |
75 | /* This isn't really OPTIONAL but it gets round invalid |
76 | * encodings |
77 | */ |
78 | ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) |
79 | } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) |
80 | |
81 | IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) |
82 | |
83 | ASN1_SEQUENCE_ref(X509_REQ, req_cb) = { |
84 | ASN1_EMBED(X509_REQ, req_info, X509_REQ_INFO), |
85 | ASN1_EMBED(X509_REQ, sig_alg, X509_ALGOR), |
86 | ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) |
87 | } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) |
88 | |
89 | IMPLEMENT_ASN1_FUNCTIONS(X509_REQ) |
90 | |
91 | IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) |
92 | |
93 | #ifndef OPENSSL_NO_SM2 |
94 | void X509_REQ_set0_sm2_id(X509_REQ *x, ASN1_OCTET_STRING *sm2_id) |
95 | { |
96 | ASN1_OCTET_STRING_free(x->sm2_id); |
97 | x->sm2_id = sm2_id; |
98 | } |
99 | |
100 | ASN1_OCTET_STRING *X509_REQ_get0_sm2_id(X509_REQ *x) |
101 | { |
102 | return x->sm2_id; |
103 | } |
104 | #endif |
105 | |