363 lines
9.3 KiB
C
363 lines
9.3 KiB
C
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/* $OpenBSD: x_x509.c,v 1.26 2018/02/17 15:50:42 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/opensslconf.h>
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#include <openssl/asn1t.h>
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#include <openssl/evp.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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static const ASN1_AUX X509_CINF_aux = {
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.flags = ASN1_AFLG_ENCODING,
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.enc_offset = offsetof(X509_CINF, enc),
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};
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static const ASN1_TEMPLATE X509_CINF_seq_tt[] = {
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{
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.flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL,
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.offset = offsetof(X509_CINF, 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_CINF, serialNumber),
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.field_name = "serialNumber",
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.item = &ASN1_INTEGER_it,
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},
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{
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.offset = offsetof(X509_CINF, signature),
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.field_name = "signature",
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.item = &X509_ALGOR_it,
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},
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{
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.offset = offsetof(X509_CINF, issuer),
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.field_name = "issuer",
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.item = &X509_NAME_it,
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},
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{
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.offset = offsetof(X509_CINF, validity),
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.field_name = "validity",
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.item = &X509_VAL_it,
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},
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{
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.offset = offsetof(X509_CINF, 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_CINF, key),
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.field_name = "key",
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.item = &X509_PUBKEY_it,
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},
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{
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.flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_OPTIONAL,
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.tag = 1,
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.offset = offsetof(X509_CINF, issuerUID),
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.field_name = "issuerUID",
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.item = &ASN1_BIT_STRING_it,
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},
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{
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.flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_OPTIONAL,
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.tag = 2,
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.offset = offsetof(X509_CINF, subjectUID),
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.field_name = "subjectUID",
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.item = &ASN1_BIT_STRING_it,
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},
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{
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.flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_SEQUENCE_OF |
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ASN1_TFLG_OPTIONAL,
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.tag = 3,
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.offset = offsetof(X509_CINF, extensions),
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.field_name = "extensions",
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.item = &X509_EXTENSION_it,
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},
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};
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const ASN1_ITEM X509_CINF_it = {
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.itype = ASN1_ITYPE_SEQUENCE,
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.utype = V_ASN1_SEQUENCE,
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.templates = X509_CINF_seq_tt,
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.tcount = sizeof(X509_CINF_seq_tt) / sizeof(ASN1_TEMPLATE),
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.funcs = &X509_CINF_aux,
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.size = sizeof(X509_CINF),
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.sname = "X509_CINF",
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};
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X509_CINF *
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d2i_X509_CINF(X509_CINF **a, const unsigned char **in, long len)
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{
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return (X509_CINF *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
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&X509_CINF_it);
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}
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int
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i2d_X509_CINF(X509_CINF *a, unsigned char **out)
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{
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return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CINF_it);
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}
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X509_CINF *
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X509_CINF_new(void)
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{
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return (X509_CINF *)ASN1_item_new(&X509_CINF_it);
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}
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void
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X509_CINF_free(X509_CINF *a)
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{
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ASN1_item_free((ASN1_VALUE *)a, &X509_CINF_it);
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}
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/* X509 top level structure needs a bit of customisation */
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extern void policy_cache_free(X509_POLICY_CACHE *cache);
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static int
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x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
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{
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X509 *ret = (X509 *)*pval;
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switch (operation) {
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case ASN1_OP_NEW_POST:
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ret->valid = 0;
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ret->name = NULL;
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ret->ex_flags = 0;
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ret->ex_pathlen = -1;
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ret->skid = NULL;
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ret->akid = NULL;
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ret->aux = NULL;
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ret->crldp = NULL;
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CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
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break;
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case ASN1_OP_D2I_POST:
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free(ret->name);
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ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
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break;
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case ASN1_OP_FREE_POST:
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CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
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X509_CERT_AUX_free(ret->aux);
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ASN1_OCTET_STRING_free(ret->skid);
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AUTHORITY_KEYID_free(ret->akid);
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CRL_DIST_POINTS_free(ret->crldp);
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policy_cache_free(ret->policy_cache);
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GENERAL_NAMES_free(ret->altname);
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NAME_CONSTRAINTS_free(ret->nc);
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free(ret->name);
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ret->name = NULL;
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break;
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}
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return 1;
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}
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static const ASN1_AUX X509_aux = {
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.app_data = NULL,
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.flags = ASN1_AFLG_REFCOUNT,
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.ref_offset = offsetof(X509, references),
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.ref_lock = CRYPTO_LOCK_X509,
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.asn1_cb = x509_cb,
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};
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static const ASN1_TEMPLATE X509_seq_tt[] = {
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{
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.offset = offsetof(X509, cert_info),
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.field_name = "cert_info",
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.item = &X509_CINF_it,
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},
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{
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.offset = offsetof(X509, 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, 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_it = {
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.itype = ASN1_ITYPE_SEQUENCE,
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.utype = V_ASN1_SEQUENCE,
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.templates = X509_seq_tt,
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.tcount = sizeof(X509_seq_tt) / sizeof(ASN1_TEMPLATE),
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.funcs = &X509_aux,
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.size = sizeof(X509),
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.sname = "X509",
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};
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X509 *
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d2i_X509(X509 **a, const unsigned char **in, long len)
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{
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return (X509 *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
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&X509_it);
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}
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int
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i2d_X509(X509 *a, unsigned char **out)
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{
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return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_it);
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}
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X509 *
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X509_new(void)
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{
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return (X509 *)ASN1_item_new(&X509_it);
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}
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void
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X509_free(X509 *a)
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{
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ASN1_item_free((ASN1_VALUE *)a, &X509_it);
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}
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X509 *
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X509_dup(X509 *x)
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{
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return ASN1_item_dup(&X509_it, x);
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}
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int
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X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
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CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
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{
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return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
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new_func, dup_func, free_func);
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}
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int
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X509_set_ex_data(X509 *r, int idx, void *arg)
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{
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return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
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}
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void *
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X509_get_ex_data(X509 *r, int idx)
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{
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return (CRYPTO_get_ex_data(&r->ex_data, idx));
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}
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/* X509_AUX ASN1 routines. X509_AUX is the name given to
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* a certificate with extra info tagged on the end. Since these
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* functions set how a certificate is trusted they should only
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* be used when the certificate comes from a reliable source
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* such as local storage.
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*
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*/
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X509 *
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d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
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{
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const unsigned char *q;
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X509 *ret;
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/* Save start position */
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q = *pp;
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ret = d2i_X509(NULL, pp, length);
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/* If certificate unreadable then forget it */
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if (!ret)
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return NULL;
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/* update length */
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length -= *pp - q;
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if (length > 0) {
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if (!d2i_X509_CERT_AUX(&ret->aux, pp, length))
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goto err;
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}
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if (a != NULL) {
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X509_free(*a);
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*a = ret;
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}
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return ret;
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err:
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X509_free(ret);
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return NULL;
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}
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int
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i2d_X509_AUX(X509 *a, unsigned char **pp)
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{
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int length;
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length = i2d_X509(a, pp);
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if (a)
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length += i2d_X509_CERT_AUX(a->aux, pp);
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return length;
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}
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void
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X509_get0_signature(const ASN1_BIT_STRING **psig, const X509_ALGOR **palg,
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const X509 *x)
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{
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if (psig != NULL)
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*psig = x->signature;
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if (palg != NULL)
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*palg = x->sig_alg;
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}
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int
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X509_get_signature_nid(const X509 *x)
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{
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return OBJ_obj2nid(x->sig_alg->algorithm);
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}
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