#!/bin/sh
#Version 0.42
# With ntpd support

. /etc/rc.subr
. /etc/util.subr
. /etc/configxml.subr

exerr () { echo -e "$*" >&2 ; exit 1; }
#
STAT=$(procstat -f $$ | grep -E "/"$(basename $0)"$")
FULL_PATH=$(echo $STAT | sed -r s/'^([^\/]+)\/'/'\/'/1 2>/dev/null)
START_FOLDER=$(dirname $FULL_PATH | sed 's|/dnsmasq_install.sh||')


# Store the script's current location in a file
echo $START_FOLDER > /tmp/dnsmasqinstaller

#Store user's inputs
# This first checks to see that the user has supplied an argument
if [ ! -z $1 ]; then
    # The first argument will be the path that the user wants to be the root folder.
    # If this directory does not exist, it is created
    DMAS_ROOT=$1    
    
    # This checks if the supplied argument is a directory. If it is not
    # then we will try to create it
    if [ ! -d $DMAS_ROOT ]; then
        echo "Attempting to create a new destination directory....."
        mkdir -p $DMAS_ROOT || exerr "ERROR: Could not create directory!"
    fi
else
# We are here because the user did not specify an alternate location. Thus, we should use the 
# current directory as the root.
    DMAS_ROOT=$START_FOLDER
fi
# create working folder	
mkdir -p $START_FOLDER/temporary || exerr "ERROR: Could not create install directory!"

echo $DMAS_ROOT > /tmp/dnsmasq.tmp
cd $START_FOLDER/temporary || exerr "ERROR: Could not access install directory!"

# Fetch the master branch as a zip file
echo "Retrieving the most recent version of dnsmasq"
fetch https://github.com/alexey1234/nas4free-dnsmasq/archive/master.zip || exerr "ERROR: Could not write to install directory!"

# Extract the files we want, stripping the leading directory, and exclude
# the git nonsense
echo "Unpacking the tarball..."
tar -xvf master.zip --exclude='.git*' --strip-components 1
# Get rid of the tarball
rm master.zip

# Obtain binary from FreeBSD package
echo "Fetch package from FreeBSD..."
pkg fetch -y -o tmp dnsmasq
cd tmp/All
tar -xzf dnsmasq*.txz
cd ../..
rm -f sbin/dmsmasq_64
rm -f sbin/dmsmasq_86
cp tmp/All/usr/local/sbin/dnsmasq sbin/dnsmasq
rm -fr tmp


# Check, if use fresh install or upgrade 
_rootfolder=`configxml_get "//dnsmasq/rootfolder"`
if [ ! -z $_rootfolder ]; then
# Update current config
	DMAS_ROOT=$_rootfolder
	/etc/rc.d/dnsmasq onestop
	rm -f /usr/local/sbin/dnsmasq
	rm -f /etc/rc.d/dnsmasq
	cp -f -R $START_FOLDER/temporary/* $DMAS_ROOT/
	ln -s $DMAS_ROOT/sbin/dnsmasq /usr/local/sbin/dnsmasq
	ln -s $DMAS_ROOT/sbin/dnsmasq.d /etc/rc.d/dnsmasq
else
	echo "Look like fresh install"
	cp -f -R $START_FOLDER/temporary/* $DMAS_ROOT/
#create webroot files
	mkdir -p /usr/local/www/ext
	ln -s $DMAS_ROOT/dnsmasq /usr/local/www/ext/dnsmasq
	cd /usr/local/www
# For each of the php files in the extensions folder
	for file in /usr/local/www/ext/dnsmasq/*.php
	do
	# Check if the link is already there
		if [ -e "${file##*/}" ]; then
			rm "${file##*/}"
		fi
		# Create link
		ln -s "$file" "${file##*/}"
	done
fi
chmod 755 $DMAS_ROOT/sbin/*
echo "Congratulations! dnsmasq was updated/installed . Navigate to config web page and push Save "

# Clean after work
cd $START_FOLDER
# Get rid of staged updates
rm -Rf temporary/*
rmdir temporary
rm /tmp/dnsmasqinstaller
currentdate=`date -j +"%h %d %H:%M:%S"`
echo "$currentdate installer[0001]: install or upgrade action successfull" >> /var/log/dnsmasq.log