#!/bin/bash
#
# update1 - NJ6N - 2008-03-31
#
# Description: Installs updated crontab entries and ipchk.sh script
#
KERNEL=`/bin/uname -r`;
UPDATE_URL="http://dsyncg2.dstarusers.org/index.php"
CURL="/usr/bin/curl --connect-timeout 30 --max-time 240"
DSICONF=/opt/products/dstar/dstar_gw/dsipsvd/dsipsvd.conf
DSYNC=http://dsyncg2.dstarusers.org
GW_CALL=`egrep -e '^ZR_CALLSIGN' $DSICONF | sed -e 's/ //g' | awk -F"=" '{print $2}' |sed -e 's/\r//'`
TRUST_SERVER=`egrep -e '^TRUST_SERVER' $DSICONF | sed -e 's/ //g' | awk -F"=" '{print $2}' |sed -e 's/\r//'`
IPCHK=/opt/products/dstar/dstar_gw/dsipsvd/ipchk.sh
PGCONF='/opt/products/dstar/pgsql/data/postgresql.conf'
#
# MD5 sums of installed files
#
# gw_schedule script
SUM1=b72ab907515cbc158c81c4d90ae28283

# crontab
SUM2=d847dcfaa133e8b8cb19ce545c2ae827

# IPCheck Script
SUM3=f9ec633476ba529f9f50ee25962b8d57

# postgres config
SUM4=e08928a6a1c08d88186ae68349eff059

# Script updater
SUM5=fc6410330c0b4135f18909aafb45cb12

if [ $EUID != 0 ] ; then
    echo "Update script must be run as root, aborting."
    exit
fi

#
# functions
# 
update_file ()
{
    URL=$1
    FILE=$2
    INSTLOC=$3
    SUM=$4

    cd /tmp
    echo `date` "Downloading $FILE ..."
    $CURL -O $URL/$FILE 2>/dev/null
    if [ $? != 0 ]; then
	echo `date` "Error downloading $FILE from $URL, aborting."
	exit
    fi
    echo -n `date` "Verifying $FILE ... "
    VERIFY_SUM=`/usr/bin/md5sum ./$FILE | awk '{print $1}'`
    if [ $VERIFY_SUM != $SUM ]; then
    echo
    echo `date` "## Invalid MD5 checksum for: $FILE, Aborting."
    exit;
else
    echo "[ok]"
    cp $FILE $INSTLOC
fi
}

#
# Install gateway scheduler script
#

mkdir -p /dstar/scripts
update_file $DSYNC gw_schedule /dstar/scripts/gw_schedule $SUM1
#
# Install script updater script
#

update_file $DSYNC update_scripts_g2 /dstar/scripts/update_scripts_g2 $SUM5

#
# Install new crontab
#
echo "Backing up current root crontab to /tmp/old_crontab."
/usr/bin/crontab -u root -l > old_crontab
update_file $DSYNC g2-crontab /tmp/crontab $SUM2
echo "Installing new crontab."
crontab -u root /tmp/crontab

#
# Install updated ipchk.sh script
#
echo "Backing up old IPCHK script to /tmp"
/bin/cp -p $IPCHK /tmp/ipchk.sh.old
#
update_file $DSYNC ipchk.sh $IPCHK $SUM3

#
# Postgres configuration file update
# 
echo "Updating postgres configuration file."
cp $PGCONF /tmp/postgresql.conf.backup
update_file $DSYNC postgresql.conf $PGCONF $SUM4

#
# All done, send report to dsync site and reboot.
#

DATE=`date -u "+%F %T"`
$CURL $UPDATE_URL \
    -d gateway_call="$GW_CALL" \
    -d datetime="$DATE" \
    -d status="Update #1 Installed." \
    -d trust="$TRUST_SERVER" \
    -d notify_em="" \
    -d version="$0 $VERSION<br>$KERNEL" > /dev/null 2>&1

echo "All done."

echo "Rebooting server in 10 seconds..."
sleep 10
/usr/bin/reboot

exit