Improved error handling.

Controller.cpp

@@ -12,10 +12,15 @@ Controller::Controller(const uint32_t startChannel)
 
 void Controller::handleTransaction()
 {
+	try
+	{
 		if (channels.size() != 0 && chrono::duration_cast<chrono::seconds>(chrono::system_clock::now() - lastMessage) < 5s)
 			toggleACTLED();
 		else
 			enableACTLED(false);
+		}
+	catch (runtime_error)
+	{}
 
 	auto msg = U2FMessage::readNonBlock();
 

Makefile

@@ -13,6 +13,9 @@ OBJECTS  := $(MODULES:$(SRC_DIR)/%.cpp=$(OBJ_DIR)/%.o)
 U2FDevice: $(OBJECTS) libuECC.o libcppb64.o
 	g++ $(LDFLAGS) -o $@ $^
 
+install: U2FDevice
+	install -m775 -t /usr/bin U2FDevice
+
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
 	g++ $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
 
@@ -22,7 +25,7 @@ clean:
 	rm $(OBJ_DIR)/*
 	rm U2FDevice
 
-.PHONY: libuECC.o libcppb64.so clean
+.PHONY: libuECC.o libcppb64.so clean install
 libuECC.o:
 	$(MAKE) -C micro-ecc
 	cp micro-ecc/libuECC.o libuECC.o

U2FDevice.cpp

@@ -11,7 +11,7 @@ void signalCallback(int signum);
 
 volatile bool contProc = true;
 
-int main()
+int main(int argc, char **argv)
 {
 	try
 	{
@@ -21,6 +21,9 @@ int main()
 	catch (runtime_error &e)
 	{
 		cerr << e.what() << endl;
+
+		if (getuid() != 0)
+			cerr << "Try running as root, using \'sudo " << argv[0] << "\'" << endl;
 	}
 
 	signal(SIGINT, signalCallback);
@@ -29,8 +32,20 @@ int main()
 	Controller ch{ 0xF1D00000 };
 
 	while (contProc)
+	{
+		try
 		{
 			ch.handleTransaction();
+		}
+		catch (const runtime_error &e)
+		{
+			cerr << e.what() << endl;
+
+			if (getuid() != 0)
+				cerr << "Try running as root, using \'sudo " << argv[0] << "\'" << endl;
+			raise(SIGINT);
+			return EXIT_FAILURE;
+		}
 		usleep(10000);
 	}
 
@@ -52,5 +67,5 @@ int main()
 void signalCallback([[maybe_unused]] int signum)
 {
 	contProc = false;
-	clog << "\nCaught SIGINT signal" << endl;
+	clog << "\nClosing" << endl;
 }