--- /dev/null
+/* v3_conf.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2002 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). */
+
+/* extension creation utilities */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+static int v3_check_critical(char **value);
+static int v3_check_generic(char **value);
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+ int crit, char *value);
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+ int crit, int type,
+ X509V3_CTX *ctx);
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
+ int ext_nid, int crit, void *ext_struc);
+static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx,
+ long *ext_len);
+/* CONF *conf: Config file */
+/* char *name: Name */
+/* char *value: Value */
+X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name,
+ char *value)
+{
+ int crit;
+ int ext_type;
+ X509_EXTENSION *ret;
+ crit = v3_check_critical(&value);
+ if ((ext_type = v3_check_generic(&value)))
+ return v3_generic_extension(name, value, crit, ext_type, ctx);
+ ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
+ if (!ret) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_IN_EXTENSION);
+ ERR_add_error_data(4, "name=", name, ", value=", value);
+ }
+ return ret;
+}
+
+/* CONF *conf: Config file */
+/* char *value: Value */
+X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+ char *value)
+{
+ int crit;
+ int ext_type;
+ crit = v3_check_critical(&value);
+ if ((ext_type = v3_check_generic(&value)))
+ return v3_generic_extension(OBJ_nid2sn(ext_nid),
+ value, crit, ext_type, ctx);
+ return do_ext_nconf(conf, ctx, ext_nid, crit, value);
+}
+
+/* CONF *conf: Config file */
+/* char *value: Value */
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+ int crit, char *value)
+{
+ const X509V3_EXT_METHOD *method;
+ X509_EXTENSION *ext;
+ STACK_OF(CONF_VALUE) *nval;
+ void *ext_struc;
+ if (ext_nid == NID_undef) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION_NAME);
+ return NULL;
+ }
+ if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION);
+ return NULL;
+ }
+ /* Now get internal extension representation based on type */
+ if (method->v2i) {
+ if (*value == '@')
+ nval = NCONF_get_section(conf, value + 1);
+ else
+ nval = X509V3_parse_list(value);
+ if (nval == NULL || sk_CONF_VALUE_num(nval) <= 0) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_EXTENSION_STRING);
+ ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=",
+ value);
+ if (*value != '@')
+ sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+ return NULL;
+ }
+ ext_struc = method->v2i(method, ctx, nval);
+ if (*value != '@')
+ sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+ if (!ext_struc)
+ return NULL;
+ } else if (method->s2i) {
+ if (!(ext_struc = method->s2i(method, ctx, value)))
+ return NULL;
+ } else if (method->r2i) {
+ if (!ctx->db || !ctx->db_meth) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_CONFIG_DATABASE);
+ return NULL;
+ }
+ if (!(ext_struc = method->r2i(method, ctx, value)))
+ return NULL;
+ } else {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
+ ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
+ return NULL;
+ }
+
+ ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
+ if (method->it)
+ ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
+ else
+ method->ext_free(ext_struc);
+ return ext;
+
+}
+
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
+ int ext_nid, int crit, void *ext_struc)
+{
+ unsigned char *ext_der;
+ int ext_len;
+ ASN1_OCTET_STRING *ext_oct;
+ X509_EXTENSION *ext;
+ /* Convert internal representation to DER */
+ if (method->it) {
+ ext_der = NULL;
+ ext_len =
+ ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
+ if (ext_len < 0)
+ goto merr;
+ } else {
+ unsigned char *p;
+ ext_len = method->i2d(ext_struc, NULL);
+ if (!(ext_der = OPENSSL_malloc(ext_len)))
+ goto merr;
+ p = ext_der;
+ method->i2d(ext_struc, &p);
+ }
+ if (!(ext_oct = M_ASN1_OCTET_STRING_new()))
+ goto merr;
+ ext_oct->data = ext_der;
+ ext_oct->length = ext_len;
+
+ ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
+ if (!ext)
+ goto merr;
+ M_ASN1_OCTET_STRING_free(ext_oct);
+
+ return ext;
+
+ merr:
+ OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ return NULL;
+
+}
+
+/* Given an internal structure, nid and critical flag create an extension */
+
+X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
+{
+ const X509V3_EXT_METHOD *method;
+ if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION);
+ return NULL;
+ }
+ return do_ext_i2d(method, ext_nid, crit, ext_struc);
+}
+
+/* Check the extension string for critical flag */
+static int v3_check_critical(char **value)
+{
+ char *p = *value;
+ if ((strlen(p) < 9) || strncmp(p, "critical,", 9))
+ return 0;
+ p += 9;
+ while (isspace((unsigned char)*p))
+ p++;
+ *value = p;
+ return 1;
+}
+
+/* Check extension string for generic extension and return the type */
+static int v3_check_generic(char **value)
+{
+ int gen_type = 0;
+ char *p = *value;
+ if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4)) {
+ p += 4;
+ gen_type = 1;
+ } else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5)) {
+ p += 5;
+ gen_type = 2;
+ } else
+ return 0;
+
+ while (isspace((unsigned char)*p))
+ p++;
+ *value = p;
+ return gen_type;
+}
+
+/* Create a generic extension: for now just handle DER type */
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+ int crit, int gen_type,
+ X509V3_CTX *ctx)
+{
+ unsigned char *ext_der = NULL;
+ long ext_len = 0;
+ ASN1_OBJECT *obj = NULL;
+ ASN1_OCTET_STRING *oct = NULL;
+ X509_EXTENSION *extension = NULL;
+ if (!(obj = OBJ_txt2obj(ext, 0))) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_NAME_ERROR);
+ ERR_add_error_data(2, "name=", ext);
+ goto err;
+ }
+
+ if (gen_type == 1)
+ ext_der = string_to_hex(value, &ext_len);
+ else if (gen_type == 2)
+ ext_der = generic_asn1(value, ctx, &ext_len);
+
+ if (ext_der == NULL) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_VALUE_ERROR);
+ ERR_add_error_data(2, "value=", value);
+ goto err;
+ }
+
+ if (!(oct = M_ASN1_OCTET_STRING_new())) {
+ OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ oct->data = ext_der;
+ oct->length = ext_len;
+ ext_der = NULL;
+
+ extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
+
+ err:
+ ASN1_OBJECT_free(obj);
+ M_ASN1_OCTET_STRING_free(oct);
+ if (ext_der)
+ OPENSSL_free(ext_der);
+ return extension;
+
+}
+
+static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx,
+ long *ext_len)
+{
+ ASN1_TYPE *typ;
+ unsigned char *ext_der = NULL;
+ typ = ASN1_generate_v3(value, ctx);
+ if (typ == NULL)
+ return NULL;
+ *ext_len = i2d_ASN1_TYPE(typ, &ext_der);
+ ASN1_TYPE_free(typ);
+ return ext_der;
+}
+
+/*
+ * This is the main function: add a bunch of extensions based on a config
+ * file section to an extension STACK.
+ */
+
+int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section,
+ STACK_OF(X509_EXTENSION) **sk)
+{
+ X509_EXTENSION *ext;
+ STACK_OF(CONF_VALUE) *nval;
+ CONF_VALUE *val;
+ size_t i;
+ if (!(nval = NCONF_get_section(conf, section)))
+ return 0;
+ for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+ val = sk_CONF_VALUE_value(nval, i);
+ if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
+ return 0;
+ if (sk)
+ X509v3_add_ext(sk, ext, -1);
+ X509_EXTENSION_free(ext);
+ }
+ return 1;
+}
+
+/*
+ * Convenience functions to add extensions to a certificate, CRL and request
+ */
+
+int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+ X509 *cert)
+{
+ STACK_OF(X509_EXTENSION) **sk = NULL;
+ if (cert)
+ sk = &cert->cert_info->extensions;
+ return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+}
+
+/* Same as above but for a CRL */
+
+int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+ X509_CRL *crl)
+{
+ STACK_OF(X509_EXTENSION) **sk = NULL;
+ if (crl)
+ sk = &crl->crl->extensions;
+ return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+}
+
+/* Add extensions to certificate request */
+
+int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+ X509_REQ *req)
+{
+ STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL;
+ int i;
+ if (req)
+ sk = &extlist;
+ i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+ if (!i || !sk)
+ return i;
+ i = X509_REQ_add_extensions(req, extlist);
+ sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
+ return i;
+}
+
+/* Config database functions */
+
+char *X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
+{
+ if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
+ return NULL;
+ }
+ if (ctx->db_meth->get_string)
+ return ctx->db_meth->get_string(ctx->db, name, section);
+ return NULL;
+}
+
+STACK_OF(CONF_VALUE) *X509V3_get_section(X509V3_CTX *ctx, char *section)
+{
+ if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) {
+ OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
+ return NULL;
+ }
+ if (ctx->db_meth->get_section)
+ return ctx->db_meth->get_section(ctx->db, section);
+ return NULL;
+}
+
+void X509V3_string_free(X509V3_CTX *ctx, char *str)
+{
+ if (!str)
+ return;
+ if (ctx->db_meth->free_string)
+ ctx->db_meth->free_string(ctx->db, str);
+}
+
+void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
+{
+ if (!section)
+ return;
+ if (ctx->db_meth->free_section)
+ ctx->db_meth->free_section(ctx->db, section);
+}
+
+static char *nconf_get_string(void *db, char *section, char *value)
+{
+ /* TODO(fork): this should return a const value. */
+ return (char *)NCONF_get_string(db, section, value);
+}
+
+static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section)
+{
+ return NCONF_get_section(db, section);
+}
+
+static const X509V3_CONF_METHOD nconf_method = {
+ nconf_get_string,
+ nconf_get_section,
+ NULL,
+ NULL
+};
+
+void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
+{
+ ctx->db_meth = &nconf_method;
+ ctx->db = conf;
+}
+
+void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
+ X509_CRL *crl, int flags)
+{
+ ctx->issuer_cert = issuer;
+ ctx->subject_cert = subj;
+ ctx->crl = crl;
+ ctx->subject_req = req;
+ ctx->flags = flags;
+}
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