244 lines
7.4 KiB
C
244 lines
7.4 KiB
C
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/* $OpenBSD: x_req.c,v 1.17 2018/02/22 16:50:30 jsing Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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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
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rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 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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static const ASN1_AUX X509_REQ_INFO_aux = {
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.flags = ASN1_AFLG_ENCODING,
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.asn1_cb = rinf_cb,
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.enc_offset = offsetof(X509_REQ_INFO, enc),
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};
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static const ASN1_TEMPLATE X509_REQ_INFO_seq_tt[] = {
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{
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.offset = offsetof(X509_REQ_INFO, version),
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.field_name = "version",
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.item = &ASN1_INTEGER_it,
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},
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{
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.offset = offsetof(X509_REQ_INFO, subject),
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.field_name = "subject",
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.item = &X509_NAME_it,
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},
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{
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.offset = offsetof(X509_REQ_INFO, pubkey),
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.field_name = "pubkey",
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.item = &X509_PUBKEY_it,
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},
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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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{
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.flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SET_OF | ASN1_TFLG_OPTIONAL,
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.offset = offsetof(X509_REQ_INFO, attributes),
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.field_name = "attributes",
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.item = &X509_ATTRIBUTE_it,
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},
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};
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const ASN1_ITEM X509_REQ_INFO_it = {
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.itype = ASN1_ITYPE_SEQUENCE,
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.utype = V_ASN1_SEQUENCE,
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.templates = X509_REQ_INFO_seq_tt,
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.tcount = sizeof(X509_REQ_INFO_seq_tt) / sizeof(ASN1_TEMPLATE),
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.funcs = &X509_REQ_INFO_aux,
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.size = sizeof(X509_REQ_INFO),
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.sname = "X509_REQ_INFO",
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};
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X509_REQ_INFO *
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d2i_X509_REQ_INFO(X509_REQ_INFO **a, const unsigned char **in, long len)
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{
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return (X509_REQ_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
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&X509_REQ_INFO_it);
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}
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int
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i2d_X509_REQ_INFO(X509_REQ_INFO *a, unsigned char **out)
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{
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return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REQ_INFO_it);
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}
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X509_REQ_INFO *
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X509_REQ_INFO_new(void)
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{
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return (X509_REQ_INFO *)ASN1_item_new(&X509_REQ_INFO_it);
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}
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void
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X509_REQ_INFO_free(X509_REQ_INFO *a)
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{
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ASN1_item_free((ASN1_VALUE *)a, &X509_REQ_INFO_it);
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}
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static const ASN1_AUX X509_REQ_aux = {
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.app_data = NULL,
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.flags = ASN1_AFLG_REFCOUNT,
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.ref_offset = offsetof(X509_REQ, references),
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.ref_lock = CRYPTO_LOCK_X509_REQ,
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};
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static const ASN1_TEMPLATE X509_REQ_seq_tt[] = {
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{
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.offset = offsetof(X509_REQ, req_info),
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.field_name = "req_info",
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.item = &X509_REQ_INFO_it,
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},
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{
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.offset = offsetof(X509_REQ, sig_alg),
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.field_name = "sig_alg",
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.item = &X509_ALGOR_it,
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},
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{
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.offset = offsetof(X509_REQ, signature),
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.field_name = "signature",
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.item = &ASN1_BIT_STRING_it,
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},
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};
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const ASN1_ITEM X509_REQ_it = {
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.itype = ASN1_ITYPE_SEQUENCE,
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.utype = V_ASN1_SEQUENCE,
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.templates = X509_REQ_seq_tt,
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.tcount = sizeof(X509_REQ_seq_tt) / sizeof(ASN1_TEMPLATE),
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.funcs = &X509_REQ_aux,
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.size = sizeof(X509_REQ),
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.sname = "X509_REQ",
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};
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X509_REQ *
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d2i_X509_REQ(X509_REQ **a, const unsigned char **in, long len)
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{
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return (X509_REQ *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
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&X509_REQ_it);
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}
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int
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i2d_X509_REQ(X509_REQ *a, unsigned char **out)
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{
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return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REQ_it);
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}
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X509_REQ *
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X509_REQ_new(void)
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{
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return (X509_REQ *)ASN1_item_new(&X509_REQ_it);
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}
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void
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X509_REQ_free(X509_REQ *a)
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{
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ASN1_item_free((ASN1_VALUE *)a, &X509_REQ_it);
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}
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X509_REQ *
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X509_REQ_dup(X509_REQ *x)
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{
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return ASN1_item_dup(&X509_REQ_it, x);
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}
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int
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X509_REQ_get_signature_nid(const X509_REQ *req)
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{
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return OBJ_obj2nid(req->sig_alg->algorithm);
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}
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void
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X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
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const X509_ALGOR **palg)
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{
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if (psig != NULL)
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*psig = req->signature;
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if (palg != NULL)
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*palg = req->sig_alg;
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}
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