| 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 | {
|
|---|
| 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 | 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)
|
|---|
