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68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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#include "internal/x509_int.h"
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/*-
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* X509_REQ_INFO is handled in an unusual way to get round
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* invalid encodings. Some broken certificate requests don't
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* encode the attributes field if it is empty. This is in
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* violation of PKCS#10 but we need to tolerate it. We do
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* this by making the attributes field OPTIONAL then using
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* the callback to initialise it to an empty STACK.
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*
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* This means that the field will be correctly encoded unless
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* we NULL out the field.
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*
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* As a result we no longer need the req_kludge field because
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* the information is now contained in the attributes field:
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* 1. If it is NULL then it's the invalid omission.
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* 2. If it is empty it is the correct encoding.
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* 3. If it is not empty then some attributes are present.
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*
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*/
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static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
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if (operation == ASN1_OP_NEW_POST) {
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rinf->attributes = sk_X509_ATTRIBUTE_new_null();
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if (!rinf->attributes)
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return 0;
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}
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return 1;
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}
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ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = {
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ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER),
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ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME),
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ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY),
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/* This isn't really OPTIONAL but it gets round invalid
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* encodings
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*/
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ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0)
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} ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO)
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IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO)
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ASN1_SEQUENCE_ref(X509_REQ, 0) = {
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ASN1_EMBED(X509_REQ, req_info, X509_REQ_INFO),
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ASN1_EMBED(X509_REQ, sig_alg, X509_ALGOR),
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ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING)
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} ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ)
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IMPLEMENT_ASN1_FUNCTIONS(X509_REQ)
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IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ)
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