1 files changed, 570 insertions, 0 deletions

diff --git a/src/lib/libcrypto/x509/x509_conf.c b/src/lib/libcrypto/x509/x509_conf.c
new file mode 100644
index 0000000000..8bf2d10b9f
--- /dev/null
+++ b/src/lib/libcrypto/x509/x509_conf.c
@@ -0,0 +1,570 @@
+/* $OpenBSD: x509_conf.c,v 1.1 2020/06/04 15:19:31 jsing Exp $ */
+/* 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/x509.h>
+#include <openssl/x509v3.h>
+
+static int v3_check_critical(const char **value);
+static int v3_check_generic(const char **value);
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+    int crit, const char *value);
+static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value,
+    int crit, int type, X509V3_CTX *ctx);
+static char *conf_lhash_get_string(void *db, const char *section,
+    const char *value);
+static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db,
+    const char *section);
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
+    int crit, void *ext_struc);
+static unsigned char *generic_asn1(const 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, const char *name,
+    const 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) {
+                X509V3error(X509V3_R_ERROR_IN_EXTENSION);
+                ERR_asprintf_error_data("name=%s, value=%s", name, value);
+        }
+        return ret;
+}
+
+/* CONF *conf:  Config file    */
+/* char *value:  Value    */
+X509_EXTENSION *
+X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+    const 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,
+    const char *value)
+{
+        const X509V3_EXT_METHOD *method;
+        X509_EXTENSION *ext;
+        void *ext_struc;
+
+        if (ext_nid == NID_undef) {
+                X509V3error(X509V3_R_UNKNOWN_EXTENSION_NAME);
+                return NULL;
+        }
+        if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+                X509V3error(X509V3_R_UNKNOWN_EXTENSION);
+                return NULL;
+        }
+        /* Now get internal extension representation based on type */
+        if (method->v2i) {
+                STACK_OF(CONF_VALUE) *nval;
+
+                if (*value == '@')
+                        nval = NCONF_get_section(conf, value + 1);
+                else
+                        nval = X509V3_parse_list(value);
+                if (sk_CONF_VALUE_num(nval) <= 0) {
+                        X509V3error(X509V3_R_INVALID_EXTENSION_STRING);
+                        ERR_asprintf_error_data("name=%s,section=%s",
+                            OBJ_nid2sn(ext_nid), 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);
+        } else if (method->s2i) {
+                ext_struc = method->s2i(method, ctx, value);
+        } else if (method->r2i) {
+                if (!ctx->db || !ctx->db_meth) {
+                        X509V3error(X509V3_R_NO_CONFIG_DATABASE);
+                        return NULL;
+                }
+                ext_struc = method->r2i(method, ctx, value);
+        } else {
+                X509V3error(X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
+                ERR_asprintf_error_data("name=%s", OBJ_nid2sn(ext_nid));
+                return NULL;
+        }
+        if (ext_struc == NULL)
+                return NULL;
+
+        ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
+        if (method->it)
+                ASN1_item_free(ext_struc, 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 = NULL;
+        X509_EXTENSION *ext;
+
+        /* Convert internal representation to DER */
+        if (method->it) {
+                ext_der = NULL;
+                ext_len = ASN1_item_i2d(ext_struc, &ext_der,
+                    method->it);
+                if (ext_len < 0)
+                        goto merr;
+        } else {
+                unsigned char *p;
+                ext_len = method->i2d(ext_struc, NULL);
+                if (!(ext_der = malloc(ext_len)))
+                        goto merr;
+                p = ext_der;
+                method->i2d(ext_struc, &p);
+        }
+        if (!(ext_oct = 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;
+        ASN1_OCTET_STRING_free(ext_oct);
+
+        return ext;
+
+merr:
+        ASN1_OCTET_STRING_free(ext_oct);
+        X509V3error(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))) {
+                X509V3error(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(const char **value)
+{
+        const 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(const char **value)
+{
+        int gen_type = 0;
+        const 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, const 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))) {
+                X509V3error(X509V3_R_EXTENSION_NAME_ERROR);
+                ERR_asprintf_error_data("name=%s", 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);
+        else {
+                ERR_asprintf_error_data("Unexpected generic extension type %d", gen_type);
+                goto err;
+        }
+
+        if (ext_der == NULL) {
+                X509V3error(X509V3_R_EXTENSION_VALUE_ERROR);
+                ERR_asprintf_error_data("value=%s", value);
+                goto err;
+        }
+
+        if (!(oct = ASN1_OCTET_STRING_new())) {
+                X509V3error(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);
+        ASN1_OCTET_STRING_free(oct);
+        free(ext_der);
+        return extension;
+}
+
+static unsigned char *
+generic_asn1(const 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, const char *section,
+    STACK_OF(X509_EXTENSION) **sk)
+{
+        X509_EXTENSION *ext;
+        STACK_OF(CONF_VALUE) *nval;
+        CONF_VALUE *val;
+        int 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, const 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, const 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, const 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, const char *name, const char *section)
+{
+        if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) {
+                X509V3error(X509V3_R_OPERATION_NOT_DEFINED);
+                return NULL;
+        }
+        return ctx->db_meth->get_string(ctx->db, name, section);
+}
+
+STACK_OF(CONF_VALUE) *
+X509V3_get_section(X509V3_CTX *ctx, const char *section)
+{
+        if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) {
+                X509V3error(X509V3_R_OPERATION_NOT_DEFINED);
+                return NULL;
+        }
+        return ctx->db_meth->get_section(ctx->db, section);
+}
+
+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, const char *section, const char *value)
+{
+        return NCONF_get_string(db, section, value);
+}
+
+static STACK_OF(CONF_VALUE) *
+nconf_get_section(void *db, const char *section)
+{
+        return NCONF_get_section(db, section);
+}
+
+static 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;
+}
+
+/* Old conf compatibility functions */
+
+X509_EXTENSION *
+X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, const char *name,
+    const char *value)
+{
+        CONF ctmp;
+
+        CONF_set_nconf(&ctmp, conf);
+        return X509V3_EXT_nconf(&ctmp, ctx, name, value);
+}
+
+/* LHASH *conf:  Config file    */
+/* char *value:  Value    */
+X509_EXTENSION *
+X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, int ext_nid,
+    const char *value)
+{
+        CONF ctmp;
+
+        CONF_set_nconf(&ctmp, conf);
+        return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
+}
+
+static char *
+conf_lhash_get_string(void *db, const char *section, const char *value)
+{
+        return CONF_get_string(db, section, value);
+}
+
+static STACK_OF(CONF_VALUE) *
+conf_lhash_get_section(void *db, const char *section)
+{
+        return CONF_get_section(db, section);
+}
+
+static X509V3_CONF_METHOD conf_lhash_method = {
+        conf_lhash_get_string,
+        conf_lhash_get_section,
+        NULL,
+        NULL
+};
+
+void
+X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash)
+{
+        ctx->db_meth = &conf_lhash_method;
+        ctx->db = lhash;
+}
+
+int
+X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
+    const char *section, X509 *cert)
+{
+        CONF ctmp;
+
+        CONF_set_nconf(&ctmp, conf);
+        return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
+}
+
+/* Same as above but for a CRL */
+
+int
+X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
+    const char *section, X509_CRL *crl)
+{
+        CONF ctmp;
+
+        CONF_set_nconf(&ctmp, conf);
+        return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
+}
+
+/* Add extensions to certificate request */
+
+int
+X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
+    const char *section, X509_REQ *req)
+{
+        CONF ctmp;
+
+        CONF_set_nconf(&ctmp, conf);
+        return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
+}