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diff --git a/3rdParty/Unbound/src/src/services/modstack.h b/3rdParty/Unbound/src/src/services/modstack.h
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+/*
+ * services/modstack.h - stack of modules
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * 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.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * 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 REGENTS 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.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions to help maintain a stack of modules.
+ */
+
+#ifndef SERVICES_MODSTACK_H
+#define SERVICES_MODSTACK_H
+struct module_func_block;
+struct module_env;
+
+/**
+ * Stack of modules.
+ */
+struct module_stack {
+	/** the number of modules */
+	int num;
+	/** the module callbacks, array of num_modules length (ref only) */
+	struct module_func_block** mod;
+};
+
+/**
+ * Init a stack of modules
+ * @param stack: initialised as empty.
+ */
+void modstack_init(struct module_stack* stack);
+
+/**
+ * Read config file module settings and set up the modfunc block
+ * @param stack: the stack of modules (empty before call). 
+ * @param module_conf: string what modules to insert.
+ * @return false on error
+ */
+int modstack_config(struct module_stack* stack, const char* module_conf);
+
+/**
+ * Get funcblock for module name
+ * @param str: string with module name. Advanced to next value on success.
+ *	The string is assumed whitespace separated list of module names.
+ * @return funcblock or NULL on error.
+ */
+struct module_func_block* module_factory(const char** str);
+
+/**
+ * Get list of modules available.
+ * @return list of modules available. Static strings, ends with NULL.
+ */
+const char** module_list_avail(void);
+
+/**
+ * Setup modules. Assigns ids and calls module_init.
+ * @param stack: if not empty beforehand, it will be desetup()ed.
+ *	It is then modstack_configged().
+ * @param module_conf: string what modules to insert.
+ * @param env: module environment which is inited by the modules.
+ *	environment should have a superalloc, cfg,
+ *	env.need_to_validate is set by the modules.
+ * @return on false a module init failed.
+ */
+int modstack_setup(struct module_stack* stack, const char* module_conf,
+	struct module_env* env);
+
+/**
+ * Desetup the modules, deinit, delete.
+ * @param stack: made empty.
+ * @param env: module env for module deinit() calls.
+ */
+void modstack_desetup(struct module_stack* stack, struct module_env* env);
+
+/**
+ * Find index of module by name.
+ * @param stack: to look in
+ * @param name: the name to look for
+ * @return -1 on failure, otherwise index number.
+ */
+int modstack_find(struct module_stack* stack, const char* name);
+
+#endif /* SERVICES_MODSTACK_H */