1 files changed, 358 insertions, 0 deletions

diff --git a/src/lib/libcrypto/x509/x509_lib.c b/src/lib/libcrypto/x509/x509_lib.c
new file mode 100644
index 0000000000..3af090fde6
--- /dev/null
+++ b/src/lib/libcrypto/x509/x509_lib.c
@@ -0,0 +1,358 @@
+/* $OpenBSD: x509_lib.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 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).
+ *
+ */
+/* X509 v3 extension utilities */
+
+#include <stdio.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/x509v3.h>
+
+#include "ext_dat.h"
+
+static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
+
+static int ext_cmp(const X509V3_EXT_METHOD * const *a,
+    const X509V3_EXT_METHOD * const *b);
+static void ext_list_free(X509V3_EXT_METHOD *ext);
+
+int
+X509V3_EXT_add(X509V3_EXT_METHOD *ext)
+{
+        if (!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) {
+                X509V3error(ERR_R_MALLOC_FAILURE);
+                return 0;
+        }
+        if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
+                X509V3error(ERR_R_MALLOC_FAILURE);
+                return 0;
+        }
+        return 1;
+}
+
+static int
+ext_cmp(const X509V3_EXT_METHOD * const *a, const X509V3_EXT_METHOD * const *b)
+{
+        return ((*a)->ext_nid - (*b)->ext_nid);
+}
+
+static int ext_cmp_BSEARCH_CMP_FN(const void *, const void *);
+static int ext_cmp(const X509V3_EXT_METHOD * const *, const X509V3_EXT_METHOD * const *);
+static const X509V3_EXT_METHOD * *OBJ_bsearch_ext(const X509V3_EXT_METHOD * *key, const X509V3_EXT_METHOD * const *base, int num);
+
+static int
+ext_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)
+{
+        const X509V3_EXT_METHOD * const *a = a_;
+        const X509V3_EXT_METHOD * const *b = b_;
+        return ext_cmp(a, b);
+}
+
+static const X509V3_EXT_METHOD **
+OBJ_bsearch_ext(const X509V3_EXT_METHOD **key,
+    const X509V3_EXT_METHOD *const *base, int num)
+{
+        return (const X509V3_EXT_METHOD **)OBJ_bsearch_(key, base, num,
+            sizeof(const X509V3_EXT_METHOD *), ext_cmp_BSEARCH_CMP_FN);
+}
+
+const X509V3_EXT_METHOD *
+X509V3_EXT_get_nid(int nid)
+{
+        X509V3_EXT_METHOD tmp;
+        const X509V3_EXT_METHOD *t = &tmp, * const *ret;
+        int idx;
+
+        if (nid < 0)
+                return NULL;
+        tmp.ext_nid = nid;
+        ret = OBJ_bsearch_ext(&t, standard_exts, STANDARD_EXTENSION_COUNT);
+        if (ret)
+                return *ret;
+        if (!ext_list)
+                return NULL;
+        idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
+        if (idx == -1)
+                return NULL;
+        return sk_X509V3_EXT_METHOD_value(ext_list, idx);
+}
+
+const X509V3_EXT_METHOD *
+X509V3_EXT_get(X509_EXTENSION *ext)
+{
+        int nid;
+
+        if ((nid = OBJ_obj2nid(ext->object)) == NID_undef)
+                return NULL;
+        return X509V3_EXT_get_nid(nid);
+}
+
+int
+X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
+{
+        for (; extlist->ext_nid!=-1; extlist++)
+                if (!X509V3_EXT_add(extlist))
+                        return 0;
+        return 1;
+}
+
+int
+X509V3_EXT_add_alias(int nid_to, int nid_from)
+{
+        const X509V3_EXT_METHOD *ext;
+        X509V3_EXT_METHOD *tmpext;
+
+        if (!(ext = X509V3_EXT_get_nid(nid_from))) {
+                X509V3error(X509V3_R_EXTENSION_NOT_FOUND);
+                return 0;
+        }
+        if (!(tmpext = malloc(sizeof(X509V3_EXT_METHOD)))) {
+                X509V3error(ERR_R_MALLOC_FAILURE);
+                return 0;
+        }
+        *tmpext = *ext;
+        tmpext->ext_nid = nid_to;
+        tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
+        return X509V3_EXT_add(tmpext);
+}
+
+void
+X509V3_EXT_cleanup(void)
+{
+        sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
+        ext_list = NULL;
+}
+
+static void
+ext_list_free(X509V3_EXT_METHOD *ext)
+{
+        if (ext->ext_flags & X509V3_EXT_DYNAMIC)
+                free(ext);
+}
+
+/* Legacy function: we don't need to add standard extensions
+ * any more because they are now kept in ext_dat.h.
+ */
+
+int
+X509V3_add_standard_extensions(void)
+{
+        return 1;
+}
+
+/* Return an extension internal structure */
+
+void *
+X509V3_EXT_d2i(X509_EXTENSION *ext)
+{
+        const X509V3_EXT_METHOD *method;
+        const unsigned char *p;
+
+        if (!(method = X509V3_EXT_get(ext)))
+                return NULL;
+        p = ext->value->data;
+        if (method->it)
+                return ASN1_item_d2i(NULL, &p, ext->value->length,
+                    method->it);
+        return method->d2i(NULL, &p, ext->value->length);
+}
+
+/* Get critical flag and decoded version of extension from a NID.
+ * The "idx" variable returns the last found extension and can
+ * be used to retrieve multiple extensions of the same NID.
+ * However multiple extensions with the same NID is usually
+ * due to a badly encoded certificate so if idx is NULL we
+ * choke if multiple extensions exist.
+ * The "crit" variable is set to the critical value.
+ * The return value is the decoded extension or NULL on
+ * error. The actual error can have several different causes,
+ * the value of *crit reflects the cause:
+ * >= 0, extension found but not decoded (reflects critical value).
+ * -1 extension not found.
+ * -2 extension occurs more than once.
+ */
+
+void *
+X509V3_get_d2i(const STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx)
+{
+        int lastpos, i;
+        X509_EXTENSION *ex, *found_ex = NULL;
+
+        if (!x) {
+                if (idx)
+                        *idx = -1;
+                if (crit)
+                        *crit = -1;
+                return NULL;
+        }
+        if (idx)
+                lastpos = *idx + 1;
+        else
+                lastpos = 0;
+        if (lastpos < 0)
+                lastpos = 0;
+        for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
+                ex = sk_X509_EXTENSION_value(x, i);
+                if (OBJ_obj2nid(ex->object) == nid) {
+                        if (idx) {
+                                *idx = i;
+                                found_ex = ex;
+                                break;
+                        } else if (found_ex) {
+                                /* Found more than one */
+                                if (crit)
+                                        *crit = -2;
+                                return NULL;
+                        }
+                        found_ex = ex;
+                }
+        }
+        if (found_ex) {
+                /* Found it */
+                if (crit)
+                        *crit = X509_EXTENSION_get_critical(found_ex);
+                return X509V3_EXT_d2i(found_ex);
+        }
+
+        /* Extension not found */
+        if (idx)
+                *idx = -1;
+        if (crit)
+                *crit = -1;
+        return NULL;
+}
+
+/* This function is a general extension append, replace and delete utility.
+ * The precise operation is governed by the 'flags' value. The 'crit' and
+ * 'value' arguments (if relevant) are the extensions internal structure.
+ */
+
+int
+X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
+    int crit, unsigned long flags)
+{
+        int extidx = -1;
+        int errcode;
+        X509_EXTENSION *ext, *extmp;
+        unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
+
+        /* If appending we don't care if it exists, otherwise
+         * look for existing extension.
+         */
+        if (ext_op != X509V3_ADD_APPEND)
+                extidx = X509v3_get_ext_by_NID(*x, nid, -1);
+
+        /* See if extension exists */
+        if (extidx >= 0) {
+                /* If keep existing, nothing to do */
+                if (ext_op == X509V3_ADD_KEEP_EXISTING)
+                        return 1;
+                /* If default then its an error */
+                if (ext_op == X509V3_ADD_DEFAULT) {
+                        errcode = X509V3_R_EXTENSION_EXISTS;
+                        goto err;
+                }
+                /* If delete, just delete it */
+                if (ext_op == X509V3_ADD_DELETE) {
+                        if (!sk_X509_EXTENSION_delete(*x, extidx))
+                                return -1;
+                        return 1;
+                }
+        } else {
+                /* If replace existing or delete, error since
+                 * extension must exist
+                 */
+                if ((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
+                    (ext_op == X509V3_ADD_DELETE)) {
+                        errcode = X509V3_R_EXTENSION_NOT_FOUND;
+                        goto err;
+                }
+        }
+
+        /* If we get this far then we have to create an extension:
+         * could have some flags for alternative encoding schemes...
+         */
+
+        ext = X509V3_EXT_i2d(nid, crit, value);
+
+        if (!ext) {
+                X509V3error(X509V3_R_ERROR_CREATING_EXTENSION);
+                return 0;
+        }
+
+        /* If extension exists replace it.. */
+        if (extidx >= 0) {
+                extmp = sk_X509_EXTENSION_value(*x, extidx);
+                X509_EXTENSION_free(extmp);
+                if (!sk_X509_EXTENSION_set(*x, extidx, ext))
+                        return -1;
+                return 1;
+        }
+
+        if (!*x && !(*x = sk_X509_EXTENSION_new_null()))
+                return -1;
+        if (!sk_X509_EXTENSION_push(*x, ext))
+                return -1;
+
+        return 1;
+
+err:
+        if (!(flags & X509V3_ADD_SILENT))
+                X509V3error(errcode);
+        return 0;
+}