#! /usr/bin/make -f
# See copyright notice at end of file


# Base Version - used to extract the firmware
VER1=R1.4.5

# New version to create from the extracted root filesystem and base version
# kernel and header
VER2=R1.4.5.M1

# Directory where you want to extract the root filesystem, from which you want
# to create it
ROOTFS=$(BUILDDIR)squashfs-root

# directory where you want to build files
BUILDDIR=MAIN/

# directory where you downloded the original fimware ... where you want to put
# the firmware you create (TFTP root)
FIRMDIR=firm/

# mksquashfs utility
MKSQUASKFS=$(HOME)/neufbox/mksquashfs

# network interface
IFACE=eth0

LN=ln -s
CP=cp
SUDO=

NB4_UNSQUASH_PY=nb4-unsquash.py
NB4_UNSQUASH=nb4-unsquash
NB4_UNSQLZMA=nb4-unsqlzma
NB4_GETFIRM=nb4-getfirm
NB4_EXTRACT=nb4-extract
NB4_CONCAT=nb4-concat

# Method to extract the root filesystem
#UNSQUASH_ACTION=$(NB4_UNSQUASH_PY) $< $(ROOTFS)
#UNSQUASH_ACTION=$(NB4_UNSQUASH) -d $(ROOTFS) $<
UNSQUASH_ACTION=$(SUDO) $(NB4_UNSQLZMA) -d $(ROOTFS) $<

ADMIN_USER=
ADMIN_CRYPTPWD=$1$7L3E4.ch$rrUxKcF0EwU/S9RH0Klo31

IPADDR=$(shell ip -f inet addr show dev $(IFACE) | grep inet | sed -r 's/.*inet ([0-9\.]*).*/\1/')

TMPFILE1=tmp1


#################### HELP ####################

help:
	@echo "make help        - This help"
	@echo "make download    - Download the official firmware in $(FIRMDIR)"
	@echo "make extract   * - Extract the firmware in $(BUILDDIR)"
	@echo "make svnclean  * - remove .svn directories from root filesystem"
	@echo "make admin     * - Create an administrative account"
	@echo "make build       - Build the new firmware in $(BUILDDIR)"
	@echo "make install     - Install the new firmware in $(FIRMDIR)"
	@echo "make tftp-server - Run a TFTP server in $(FIRMDIR)"
	@echo
	@echo "* you may want to run these actions with root privileges"
	@echo "  to do so, just run `make SUDO=sudo <target>' (for example)"
	@echo
	@echo "extract, build and install target must be run with correct"
	@echo "firmware version: "
	@echo "Original firmware version (extract, build): VER1=$(VER1)"
	@echo "New firmware version (install):             VER2=$(VER2)"
.PHONY: help


#################### DOWNLOAD ####################

download:
	-test ! -d $(FIRMDIR) && mkdir $(FIRMDIR)
	cd $(FIRMDIR); $(NB4_GETFIRM)
	$(CP) $(FIRMDIR)/LOSTVersion.general $(FIRMDIR)/LOSTVersion.general.default
.PHONY: download


#################### EXTRACT ####################

extract: $(BUILDDIR)NB4-$(VER1)-ROOTFS
	$(UNSQUASH_ACTION)
.PHONY: extract

$(BUILDDIR)NB4-$(VER1)-HEADER $(BUILDDIR)NB4-$(VER1)-KERNEL $(BUILDDIR)NB4-$(VER1)-ROOTFS: $(BUILDDIR)NB4-$(VER1)-MAIN
	cd $(BUILDDIR) ; $(NB4_EXTRACT) $<

$(BUILDDIR)NB4-$(VER1)-MAIN: $(FIRMDIR)NB4-$(VER1)-MAIN
	-test ! -d $(BUILDDIR) && mkdir $(BUILDDIR)
	$(LN) $< $@


#################### SVNCLEAN ####################

svnclean:
	$(SUDO) find $(ROOTFS) -type d -name '.svn' -exec rm -r {} \; -prune -print
.PHONY: svnclean


#################### ADMIN ####################

admin:
	@user=$(ADMIN_USER) ; \
	pass=$(ADMIN_CRYPTPWD) ; \
	echo "Note: You can change the crypted password by setting the" ;\
	echo "      variable ADMIN_CRYPTPWD on the make command line" ;\
	if [ -z "$$pass" ]; then \
		echo "Error: You must specify a username in the Makefile" >&2; \
		echo "       by setting the variable ADMIN_CRYPTPWD" >&2; \
		exit 1; \
	fi; \
	if [ -z "$$user" ]; then \
		echo -n "Username: "; \
		read user; \
	fi; \
	$(SUDO) $(CP) $(ROOTFS)/etc/passwd $(ROOTFS)/etc/passwd.bak ; \
	$(SUDO) $(CP) $(ROOTFS)/etc/shadow $(ROOTFS)/etc/shadow.bak ; \
	echo "$$user:x:0:0:root:/:/bin/sh" > $(TMPFILE1) ; \
	$(SUDO) grep -v "^$$user:" $(ROOTFS)/etc/passwd >> $(TMPFILE1) ; \
	$(SUDO) $(CP) $(TMPFILE1) $(ROOTFS)/etc/passwd ; \
	echo "$$user:$$pass:13367:0:99999:7:::" > $(TMPFILE1) ; \
	$(SUDO) grep -v "^$$user:" $(ROOTFS)/etc/shadow >> $(TMPFILE1) ; \
	$(SUDO) $(CP) $(TMPFILE1) $(ROOTFS)/etc/shadow ; \
	echo "Created user $$user."
.PHONY: admin


#################### BUILD ####################

build: $(BUILDDIR)NB4-$(VER2)-MAIN
.PHONY: build

$(FIRMDIR)NB4-$(VER2)-MAIN: $(BUILDDIR)NB4-$(VER2)-MAIN
	-test ! -d $(FIRMDIR) && mkdir $(FIRMDIR)
	$(CP) $< $@

$(BUILDDIR)NB4-$(VER2)-MAIN: $(BUILDDIR)NB4-$(VER2)-HEADER $(BUILDDIR)NB4-$(VER2)-KERNEL $(BUILDDIR)NB4-$(VER2)-ROOTFS
	cd $(BUILDDIR) ; $(NB4_CONCAT) NB4-$(VER2)
	-chmod a+r $@

$(BUILDDIR)NB4-$(VER2)-HEADER: $(BUILDDIR)NB4-$(VER1)-HEADER
	$(LN) $< $@

$(BUILDDIR)NB4-$(VER2)-KERNEL: $(BUILDDIR)NB4-$(VER1)-KERNEL
	$(LN) $< $@

$(BUILDDIR)NB4-$(VER2)-ROOTFS:
	-test ! -d $(BUILDDIR) && mkdir $(BUILDDIR)
	cd $(BUILDDIR) ; $(MKSQUASKFS) $(ROOTFS) $@ -be -lzma -no-fragments -noI -all-root -noappend


#################### INSTALL ####################

install: $(FIRMDIR)NB4-$(VER2)-MAIN
	tmp="`cat $(FIRMDIR)/LOSTVersion.general`" ; \
	echo "$$tmp" \
		| sed -r 's/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$$/$(IPADDR)/' \
		| sed -r 's/^.*\-MAIN$$/NB4-$(VER2)-MAIN/'
.PHONY: install


#################### TFTP-SERVER ####################

tftp-server:
	dnsmasq -d -C /dev/null -i $(IFACE) \
		--domain-needed                     \
		--enable-tftp                       \
		--tftp-root="$(FIRMDIR)"            \
		--dhcp-range=192.168.10.2,192.168.10.150,12h \
		--dhcp-option=1,255.255.255.0       \
		--dhcp-option=6,192.168.10.1        \
		--dhcp-option=3,192.168.10.1        \
		--dhcp-option=17,"192.168.10.1"
.PHONY: tftp-server



#######################################################################
## Copyright (c) 2008 Mildred <mildred593(at)online.fr>
##
## Permission is hereby granted, free of charge, to any person
## obtaining a copy of this software and associated documentation
## files (the "Software"), to deal in the Software without
## restriction, including without limitation the rights to use,
## copy, modify, merge, publish, distribute, sublicense, and/or sell
## copies of the Software, and to permit persons to whom the
## Software is furnished to do so, subject to the following
## conditions:
##
## The above copyright notice and this permission notice shall be
## included in all copies or substantial portions of the Software.
##
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
## EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
## OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
## NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
## HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
## WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
## FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
## OTHER DEALINGS IN THE SOFTWARE.
#######################################################################