--- /dev/null
+/* v3_akey.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+ AUTHORITY_KEYID *akeyid,
+ STACK_OF(CONF_VALUE)
+ *extlist);
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+ X509V3_CTX *ctx,
+ STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_akey_id = {
+ NID_authority_key_identifier,
+ X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
+ 0, 0, 0, 0,
+ 0, 0,
+ (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
+ (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
+ 0, 0,
+ NULL
+};
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+ AUTHORITY_KEYID *akeyid,
+ STACK_OF(CONF_VALUE)
+ *extlist)
+{
+ char *tmp;
+ if (akeyid->keyid) {
+ tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
+ X509V3_add_value("keyid", tmp, &extlist);
+ OPENSSL_free(tmp);
+ }
+ if (akeyid->issuer)
+ extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
+ if (akeyid->serial) {
+ tmp = hex_to_string(akeyid->serial->data, akeyid->serial->length);
+ X509V3_add_value("serial", tmp, &extlist);
+ OPENSSL_free(tmp);
+ }
+ return extlist;
+}
+
+/*
+ * Currently two options: keyid: use the issuers subject keyid, the value
+ * 'always' means its is an error if the issuer certificate doesn't have a
+ * key id. issuer: use the issuers cert issuer and serial number. The default
+ * is to only use this if keyid is not present. With the option 'always' this
+ * is always included.
+ */
+
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+ X509V3_CTX *ctx,
+ STACK_OF(CONF_VALUE) *values)
+{
+ char keyid = 0, issuer = 0;
+ size_t i;
+ int j;
+ CONF_VALUE *cnf;
+ ASN1_OCTET_STRING *ikeyid = NULL;
+ X509_NAME *isname = NULL;
+ GENERAL_NAMES *gens = NULL;
+ GENERAL_NAME *gen = NULL;
+ ASN1_INTEGER *serial = NULL;
+ X509_EXTENSION *ext;
+ X509 *cert;
+ AUTHORITY_KEYID *akeyid;
+
+ for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+ cnf = sk_CONF_VALUE_value(values, i);
+ if (!strcmp(cnf->name, "keyid")) {
+ keyid = 1;
+ if (cnf->value && !strcmp(cnf->value, "always"))
+ keyid = 2;
+ } else if (!strcmp(cnf->name, "issuer")) {
+ issuer = 1;
+ if (cnf->value && !strcmp(cnf->value, "always"))
+ issuer = 2;
+ } else {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_OPTION);
+ ERR_add_error_data(2, "name=", cnf->name);
+ return NULL;
+ }
+ }
+
+ if (!ctx || !ctx->issuer_cert) {
+ if (ctx && (ctx->flags == CTX_TEST))
+ return AUTHORITY_KEYID_new();
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_CERTIFICATE);
+ return NULL;
+ }
+
+ cert = ctx->issuer_cert;
+
+ if (keyid) {
+ j = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
+ if ((j >= 0) && (ext = X509_get_ext(cert, j)))
+ ikeyid = X509V3_EXT_d2i(ext);
+ if (keyid == 2 && !ikeyid) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
+ return NULL;
+ }
+ }
+
+ if ((issuer && !ikeyid) || (issuer == 2)) {
+ isname = X509_NAME_dup(X509_get_issuer_name(cert));
+ serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
+ if (!isname || !serial) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
+ goto err;
+ }
+ }
+
+ if (!(akeyid = AUTHORITY_KEYID_new()))
+ goto err;
+
+ if (isname) {
+ if (!(gens = sk_GENERAL_NAME_new_null())
+ || !(gen = GENERAL_NAME_new())
+ || !sk_GENERAL_NAME_push(gens, gen)) {
+ OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ gen->type = GEN_DIRNAME;
+ gen->d.dirn = isname;
+ }
+
+ akeyid->issuer = gens;
+ akeyid->serial = serial;
+ akeyid->keyid = ikeyid;
+
+ return akeyid;
+
+ err:
+ X509_NAME_free(isname);
+ M_ASN1_INTEGER_free(serial);
+ M_ASN1_OCTET_STRING_free(ikeyid);
+ return NULL;
+}
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