+++ /dev/null
-/*
- * Copyright (C) 2012 Red Hat Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the
- * following disclaimer.
- * * Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions and
- * the following disclaimer in the documentation and/or
- * other materials provided with the distribution.
- * * The names of contributors to this software may not be
- * used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * Author: Stef Walter <stefw@redhat.com>
- */
-
-#include "config.h"
-
-#include "asn1.h"
-#include "attrs.h"
-#include "checksum.h"
-#define P11_DEBUG_FLAG P11_DEBUG_TRUST
-#include "debug.h"
-#include "dict.h"
-#include "library.h"
-#include "mozilla.h"
-#include "oid.h"
-#include "parser.h"
-#include "x509.h"
-
-#include "pkcs11.h"
-#include "pkcs11x.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-static CK_ATTRIBUTE *
-update_ku (p11_parser *parser,
- p11_array *parsing,
- CK_ATTRIBUTE *object,
- CK_TRUST present)
-{
- unsigned char *data = NULL;
- p11_dict *asn1_defs;
- unsigned int ku = 0;
- size_t length;
- CK_TRUST defawlt;
- CK_ULONG i;
-
- struct {
- CK_ATTRIBUTE_TYPE type;
- unsigned int ku;
- } ku_attribute_map[] = {
- { CKA_TRUST_DIGITAL_SIGNATURE, P11_KU_DIGITAL_SIGNATURE },
- { CKA_TRUST_NON_REPUDIATION, P11_KU_NON_REPUDIATION },
- { CKA_TRUST_KEY_ENCIPHERMENT, P11_KU_KEY_ENCIPHERMENT },
- { CKA_TRUST_DATA_ENCIPHERMENT, P11_KU_DATA_ENCIPHERMENT },
- { CKA_TRUST_KEY_AGREEMENT, P11_KU_KEY_AGREEMENT },
- { CKA_TRUST_KEY_CERT_SIGN, P11_KU_KEY_CERT_SIGN },
- { CKA_TRUST_CRL_SIGN, P11_KU_CRL_SIGN },
- { CKA_INVALID },
- };
-
- CK_ATTRIBUTE attrs[sizeof (ku_attribute_map)];
-
- defawlt = present;
-
- /* If blacklisted, don't even bother looking at extensions */
- if (present != CKT_NETSCAPE_UNTRUSTED)
- data = p11_parsing_get_extension (parser, parsing, P11_OID_KEY_USAGE, &length);
-
- if (data) {
- /*
- * If the certificate extension was missing, then *all* key
- * usages are to be set. If the extension was invalid, then
- * fail safe to none of the key usages.
- */
- defawlt = CKT_NETSCAPE_TRUST_UNKNOWN;
-
- asn1_defs = p11_parser_get_asn1_defs (parser);
- if (!p11_x509_parse_key_usage (asn1_defs, data, length, &ku))
- p11_message ("invalid key usage certificate extension");
- free (data);
- }
-
- for (i = 0; ku_attribute_map[i].type != CKA_INVALID; i++) {
- attrs[i].type = ku_attribute_map[i].type;
- if (data && (ku & ku_attribute_map[i].ku) == ku_attribute_map[i].ku) {
- attrs[i].pValue = &present;
- attrs[i].ulValueLen = sizeof (present);
- } else {
- attrs[i].pValue = &defawlt;
- attrs[i].ulValueLen = sizeof (defawlt);
- }
- }
-
- return p11_attrs_buildn (object, attrs, i);
-}
-
-static CK_ATTRIBUTE *
-update_eku (p11_parser *parser,
- p11_array *parsing,
- CK_ATTRIBUTE *object,
- CK_TRUST trust)
-{
- CK_TRUST defawlt;
- CK_TRUST distrust;
- unsigned char *data = NULL;
- p11_dict *ekus = NULL;
- p11_dict *reject = NULL;
- p11_dict *asn1_defs;
- size_t length;
- CK_ULONG i;
-
- struct {
- CK_ATTRIBUTE_TYPE type;
- const char *eku;
- } eku_attribute_map[] = {
- { CKA_TRUST_SERVER_AUTH, P11_OID_SERVER_AUTH_STR },
- { CKA_TRUST_CLIENT_AUTH, P11_OID_CLIENT_AUTH_STR },
- { CKA_TRUST_CODE_SIGNING, P11_OID_CODE_SIGNING_STR },
- { CKA_TRUST_EMAIL_PROTECTION, P11_OID_EMAIL_PROTECTION_STR },
- { CKA_TRUST_IPSEC_END_SYSTEM, P11_OID_IPSEC_END_SYSTEM_STR },
- { CKA_TRUST_IPSEC_TUNNEL, P11_OID_IPSEC_TUNNEL_STR },
- { CKA_TRUST_IPSEC_USER, P11_OID_IPSEC_USER_STR },
- { CKA_TRUST_TIME_STAMPING, P11_OID_TIME_STAMPING_STR },
- { CKA_INVALID },
- };
-
-
- CK_ATTRIBUTE attrs[sizeof (eku_attribute_map)];
-
- /* The value set if an eku is not present, adjusted below */
- defawlt = trust;
-
- /* The value set if an eku is explictly rejected */
- distrust = CKT_NETSCAPE_UNTRUSTED;
-
- /* If blacklisted, don't even bother looking at extensions */
- if (trust != CKT_NETSCAPE_UNTRUSTED)
- data = p11_parsing_get_extension (parser, parsing, P11_OID_EXTENDED_KEY_USAGE, &length);
-
- if (data) {
- /*
- * If the certificate extension was missing, then *all* extended key
- * usages are to be set. If the extension was invalid, then
- * fail safe to none of the extended key usages.
- */
- defawlt = CKT_NETSCAPE_TRUST_UNKNOWN;
-
- asn1_defs = p11_parser_get_asn1_defs (parser);
- ekus = p11_x509_parse_extended_key_usage (asn1_defs, data, length);
- if (ekus == NULL)
- p11_message ("invalid extended key usage certificate extension");
- free (data);
- }
-
- data = p11_parsing_get_extension (parser, parsing, P11_OID_OPENSSL_REJECT, &length);
- if (data) {
- asn1_defs = p11_parser_get_asn1_defs (parser);
- reject = p11_x509_parse_extended_key_usage (asn1_defs, data, length);
- if (reject == NULL)
- p11_message ("invalid reject key usage certificate extension");
- free (data);
- }
-
- for (i = 0; eku_attribute_map[i].type != CKA_INVALID; i++) {
- attrs[i].type = eku_attribute_map[i].type;
- if (reject && p11_dict_get (reject, eku_attribute_map[i].eku)) {
- attrs[i].pValue = &distrust;
- attrs[i].ulValueLen = sizeof (distrust);
- } else if (ekus && p11_dict_get (ekus, eku_attribute_map[i].eku)) {
- attrs[i].pValue = &trust;
- attrs[i].ulValueLen = sizeof (trust);
- } else {
- attrs[i].pValue = &defawlt;
- attrs[i].ulValueLen = sizeof (defawlt);
- }
- }
-
- p11_dict_free (ekus);
- p11_dict_free (reject);
-
- return p11_attrs_buildn (object, attrs, i);
-}
-
-
-static CK_ATTRIBUTE *
-build_nss_trust_object (p11_parser *parser,
- p11_array *parsing,
- CK_ATTRIBUTE *cert)
-{
- CK_ATTRIBUTE *object = NULL;
- CK_TRUST trust;
- CK_ULONG category;
- CK_BBOOL bval;
-
- CK_OBJECT_CLASS vclass = CKO_NETSCAPE_TRUST;
- CK_BYTE vsha1_hash[P11_CHECKSUM_SHA1_LENGTH];
- CK_BYTE vmd5_hash[P11_CHECKSUM_MD5_LENGTH];
- CK_BBOOL vfalse = CK_FALSE;
- CK_BBOOL vtrue = CK_TRUE;
-
- CK_ATTRIBUTE klass = { CKA_CLASS, &vclass, sizeof (vclass) };
- CK_ATTRIBUTE token = { CKA_TOKEN, &vtrue, sizeof (vtrue) };
- CK_ATTRIBUTE private = { CKA_PRIVATE, &vfalse, sizeof (vfalse) };
- CK_ATTRIBUTE modifiable = { CKA_MODIFIABLE, &vfalse, sizeof (vfalse) };
- CK_ATTRIBUTE invalid = { CKA_INVALID, };
-
- CK_ATTRIBUTE md5_hash = { CKA_CERT_MD5_HASH, vmd5_hash, sizeof (vmd5_hash) };
- CK_ATTRIBUTE sha1_hash = { CKA_CERT_SHA1_HASH, vsha1_hash, sizeof (vsha1_hash) };
-
- CK_ATTRIBUTE step_up_approved = { CKA_TRUST_STEP_UP_APPROVED, &vfalse, sizeof (vfalse) };
-
- CK_ATTRIBUTE *label;
- CK_ATTRIBUTE *id;
- CK_ATTRIBUTE *der;
- CK_ATTRIBUTE *subject;
- CK_ATTRIBUTE *issuer;
- CK_ATTRIBUTE *serial_number;
-
- /* Setup the hashes of the DER certificate value */
- der = p11_attrs_find (cert, CKA_VALUE);
- return_val_if_fail (der != NULL, NULL);
- p11_checksum_md5 (vmd5_hash, der->pValue, der->ulValueLen, NULL);
- p11_checksum_sha1 (vsha1_hash, der->pValue, der->ulValueLen, NULL);
-
- /* Copy all of the following attributes from certificate */
- id = p11_attrs_find (cert, CKA_ID);
- return_val_if_fail (id != NULL, NULL);
- subject = p11_attrs_find (cert, CKA_SUBJECT);
- return_val_if_fail (subject != NULL, NULL);
- issuer = p11_attrs_find (cert, CKA_ISSUER);
- return_val_if_fail (issuer != NULL, NULL);
- serial_number = p11_attrs_find (cert, CKA_SERIAL_NUMBER);
- return_val_if_fail (serial_number != NULL, NULL);
-
- /* Try to use the same label */
- label = p11_attrs_find (cert, CKA_LABEL);
- if (label == NULL)
- label = &invalid;
-
- object = p11_attrs_build (NULL, &klass, &token, &private, &modifiable, id, label,
- subject, issuer, serial_number, &md5_hash, &sha1_hash,
- &step_up_approved, NULL);
- return_val_if_fail (object != NULL, NULL);
-
- /* Calculate the default trust */
- trust = CKT_NETSCAPE_TRUST_UNKNOWN;
-
- if (p11_attrs_find_bool (cert, CKA_TRUSTED, &bval) && bval) {
- if (p11_attrs_find_ulong (cert, CKA_CERTIFICATE_CATEGORY, &category) && category == 2)
- trust = CKT_NETSCAPE_TRUSTED_DELEGATOR;
- else
- trust = CKT_NETSCAPE_TRUSTED;
- }
-
- if (p11_attrs_find_bool (cert, CKA_X_DISTRUSTED, &bval) && bval)
- trust = CKT_NETSCAPE_UNTRUSTED;
-
- object = update_ku (parser, parsing, object, trust);
- return_val_if_fail (object != NULL, NULL);
-
- object = update_eku (parser, parsing, object, trust);
- return_val_if_fail (object != NULL, NULL);
-
- if (!p11_array_push (parsing, object))
- return_val_if_reached (NULL);
-
- return object;
-}
-
-void
-p11_mozilla_build_trust_object (p11_parser *parser,
- p11_array *parsing)
-{
- CK_ATTRIBUTE *cert;
-
- cert = p11_parsing_get_certificate (parser, parsing);
- return_if_fail (cert != NULL);
-
- build_nss_trust_object (parser, parsing, cert);
-}
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