|
#!/bin/bash
|
|
################################################################################
|
|
# #
|
|
# Author: Michal Kliment #
|
|
# Description: This script generates config file of ISC DHCP server #
|
|
# from FreenetIS #
|
|
# #
|
|
# Version: 0.1.3 #
|
|
# #
|
|
################################################################################
|
|
|
|
# Version
|
|
VERSION="0.1.3"
|
|
|
|
# Variables
|
|
CONFIG=/etc/freenetis/freenetis-dhcp.conf
|
|
CUSTOM_DHCP_CONF=/etc/dhcp/dhcp.conf.custom
|
|
FORCED=1
|
|
|
|
# Vesion info? Only possible arg.
|
|
if [ $# -eq 1 ]; then
|
|
if [ "$1" == "version" ]; then
|
|
echo "$VERSION"
|
|
exit 0
|
|
fi
|
|
fi
|
|
|
|
# Load variables
|
|
if [ -e $CONFIG ]; then
|
|
. $CONFIG || true
|
|
else
|
|
echo "`date -R` Config file is missing at path $CONFIG. Terminating..."
|
|
exit 0
|
|
fi
|
|
|
|
# check config
|
|
if [[ ! "$DEVICE_ID" =~ ^[0-9]+$ ]] || [ $DEVICE_ID -lt 1 ]; then
|
|
echo "[ERROR] `date -R` Wrong configuration (ID not set properly)"
|
|
exit 1
|
|
fi
|
|
|
|
if [[ ! "$TIMEOUT" =~ ^[0-9]+$ ]] || [ $TIMEOUT -lt 1 ]; then
|
|
echo "[ERROR] `date -R` Wrong configuration (TIMEOUT not set properly)"
|
|
exit 1
|
|
fi
|
|
|
|
# endless loop
|
|
while true;
|
|
do
|
|
#path
|
|
if [ "$FORCED" = 1 ]; then # forced download (#474)
|
|
DOWN_PATH="$FULL_PATH/1"
|
|
FORCED=0
|
|
else
|
|
DOWN_PATH="$FULL_PATH"
|
|
fi
|
|
# download
|
|
TMPFILE=`mktemp`
|
|
echo "[INFO] `date -R` Downloading ISC DHCP SERVER config from (${PATH_FN})"
|
|
|
|
status=`wget --no-check-certificate --server-response -q "$DOWN_PATH" -O "$TMPFILE" 2>&1 | awk '/^ HTTP/{print $2}'`
|
|
|
|
# make sure that config exist
|
|
touch "$DHCP_CONF"
|
|
|
|
# check download
|
|
if [ "$status" = "200" ]; then
|
|
# attach custom conf if exists
|
|
if [ -r "$CUSTOM_DHCP_CONF" ]; then
|
|
cat "$CUSTOM_DHCP_CONF" >> "$TMPFILE"
|
|
fi
|
|
# config has been change
|
|
if [ `diff "$TMPFILE" "$DHCP_CONF" | wc -l` -gt 0 ]; then
|
|
echo "[INFO] `date -R` Downloaded (code: $status)"
|
|
echo "[INFO] `date -R` Backuping old config to $DHCP_CONF.save"
|
|
mv -f "$DHCP_CONF" "$DHCP_CONF".save
|
|
echo "[INFO] `date -R` Loading new config to $DHCP_CONF.save..."
|
|
# copy config
|
|
mv -f "$TMPFILE" "$DHCP_CONF"
|
|
#restart DHCP server
|
|
echo "[INFO] `date -R` Restarting ISC DHCP server"
|
|
|
|
service isc-dhcp-server restart 2>&1 >/dev/null
|
|
else
|
|
echo "[INFO] `date -R` No change -> keeping old configuration"
|
|
fi
|
|
elif [[ "$status" =~ ^30[0-9] ]]; then
|
|
echo "[INFO] `date -R` DHCP configuration not changed"
|
|
elif [ "$status" = "404" ]; then
|
|
echo "[ERROR] `date -R` Download failed (code: $status). Wrong path to FreenetIS or device $DEVICE_ID not exists."
|
|
elif [ "$status" = "403" ]; then
|
|
echo "[ERROR] `date -R` Download failed (code: $status). Device $DEVICE_ID not configured properly."
|
|
else
|
|
echo "[ERROR] `date -R` Download failed (code: $status)"
|
|
fi
|
|
|
|
rm -f "$TMPFILE"
|
|
sleep $TIMEOUT
|
|
done
|