#   Copyright 2019 Pascal Gloor
#
#   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.

CC      := gcc
CCFLAGS := -Wall -O2
LDFLAGS := -lnetfilter_queue

TARGETS:= dhcp_protect
MAINS  := $(dhcp_protect .o, $(TARGETS) )
OBJ    := dhcp_protect.o $(MAINS)
DEPS   := dhcp_protect.h

.PHONY: all clean install uninstall

help:
	@echo "make <all|clean|install|uninstall>"

all: $(TARGETS)

clean:
	rm -f $(TARGETS) $(OBJ)

install:
	systemctl stop dhcp_protect
	cp dhcp_protect /usr/local/bin/
	cp dhcp_protect.conf /usr/local/etc/
	cp dhcp_protect.service /etc/systemd/system/
	chmod 644 /etc/systemd/system/dhcp_protect.service
	systemctl enable dhcp_protect
	systemctl start dhcp_protect

uninstall:
	systemctl stop dhcp_protect
	systemctl disable dhcp_protect
	rm -f /usr/local/bin/dhcp_protect
	rm -f /usr/local/etc/dhcp_protect.conf
	rm -f /etc/systemd/system/dhcp_protect.service


$(OBJ): %.o : %.c $(DEPS)
	$(CC) -c -o $@ $< $(CCFLAGS)

$(TARGETS): % : $(filter-out $(MAINS), $(OBJ)) %.o
	$(CC) -o $@ $(LIBS) $^ $(CCFLAGS) $(LDFLAGS)