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diff --git a/CAN-binder/low-can-binding/utils/signals.hpp b/CAN-binder/low-can-binding/utils/signals.hpp
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+++ b/CAN-binder/low-can-binding/utils/signals.hpp
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+/*
+ * Copyright (C) 2015, 2016 "IoT.bzh"
+ * Author "Romain Forlot" <romain.forlot@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *	 http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <vector>
+#include <string>
+#include <fnmatch.h>
+
+#include "openxc.pb.h"
+#include "../configuration.hpp"
+#include "../can/can-signals.hpp"
+#include "../diagnostic/diagnostic-message.hpp"
+
+#include "../low-can-binding.hpp"
+
+extern std::mutex subscribed_signals_mutex;
+std::mutex& get_subscribed_signals_mutex();
+
+/**
+ * @brief return the subscribed_signals map.
+ * 
+ * return Map of subscribed signals.
+ */
+extern std::map<std::string, struct afb_event> subscribed_signals;
+std::map<std::string, struct afb_event>& get_subscribed_signals();
+
+template <typename T>
+void lookup_signals_by_name(const std::string& key, std::vector<T>& signals, std::vector<T*>& found_signals)
+{
+	for(T& s : signals)
+	{
+		if(::fnmatch(key.c_str(), s.get_generic_name().c_str(), FNM_CASEFOLD) == 0)
+			found_signals.push_back(&s);
+		if(::fnmatch(key.c_str(), s.get_name().c_str(), FNM_CASEFOLD) == 0)
+			found_signals.push_back(&s);
+	}
+}
+
+template <typename T>
+void lookup_signals_by_name(const std::string& key, std::vector<T>& signals, std::vector<std::string>& found_signals_name)
+{
+	for(T& s : signals)
+	{
+		if(::fnmatch(key.c_str(), s.get_generic_name().c_str(), FNM_CASEFOLD) == 0)
+			found_signals_name.push_back(s.get_name());
+		if(::fnmatch(key.c_str(), s.get_name().c_str(), FNM_CASEFOLD) == 0)
+			found_signals_name.push_back(s.get_name());
+	}
+}
+
+template <typename T>
+void lookup_signals_by_id(const double key, std::vector<T>& signals, std::vector<T*>& found_signals)
+{
+	for(T& s : signals)
+	{
+		if(configuration_t::instance().get_signal_id(s) == key)
+		{
+			found_signals.push_back(&s);
+		}
+	}
+}
+
+template <typename T>
+void lookup_signals_by_id(const double key, std::vector<T>& signals, std::vector<std::string>& found_signals_name)
+{
+	for(T& s : signals)
+	{
+		if(configuration_t::instance().get_signal_id(s) == key)
+		{
+			found_signals_name.push_back(s.get_name());
+		}
+	}
+}
+
+std::vector<std::string> find_signals(const openxc_DynamicField &key);