#!/bin/bash
#
# 11-25-2008  | nj6n   | Initial release of update 3.0  - Installs ICOM dsgwd patch
# 
CURL="/usr/bin/curl --connect-timeout 90 --max-time 120"
KERNEL=`/bin/uname -r`;
UPDATE_URL="http://dsyncg2.dstarusers.org/index.php"
#
DSTARGW=/opt/products/dstar/dstar_gw
DSIPSVD=$DSTARGW/dsipsvd/dsipsvd
DSGWD=$DSTARGW/dsgwd/dsgwd
DSICONF=$DSTARGW/dsipsvd/dsipsvd.conf
#
GW_CALL=`egrep -e '^ZR_CALLSIGN' $DSICONF | sed -e 's/ //g' | awk -F"=" '{print $2}' |sed -e 's/\r//'`
#
PATCH_LOC=dsyncg2.dstarusers.org
PNAME=dsgwd_Rev2.2.tar.gz
#
# MD5 sums of installed files
#
SUM1=84608bae24ef3deafb2a4bbd0bcd11bc
#
# Command locations
#
ECHO=/bin/echo
SERVICE=/sbin/service
MD5SUM=/usr/bin/md5sum

#
# functions
# 

#
# Make sure the dstar gateway applications exist
#

$ECHO -n "Checking for: $DSIPSVD ... "
if [ ! -x $DSIPSVD ]; then
    echo "$DSIPSVD doesn't exist!"
    DATE=`date -u "+%F %T"`
    $CURL $UPDATE_URL \
	-d gateway_call="$GW_CALL" \
	-d datetime="$DATE" \
	-d status="Update #3: $DSIPSVD not found!" \
	-d trust="$TRUST_SERVER" \
	-d notify_em="" \
	-d version="$0 $VERSION<br>$KERNEL" > /dev/null 2>&1
    exit
else
    echo "[ok]"
fi

$ECHO -n "Checking for: $DSGWD ... "
if [ ! -x $DSGWD ]; then
    echo "$DSGWD doesn't exist!"
    DATE=`date -u "+%F %T"`
    $CURL $UPDATE_URL \
	-d gateway_call="$GW_CALL" \
	-d datetime="$DATE" \
	-d status="Update #3: $DSGWD not found!" \
	-d trust="$TRUST_SERVER" \
	-d notify_em="" \
	-d version="$0 $VERSION<br>$KERNEL" > /dev/null 2>&1
    exit
else
    echo "[ok]"
fi

#
# Stop the gateway...
#
$SERVICE dstar_gw stop
/bin/sleep 2
$SERVICE dstar_gw status

#
# Back up the old files
#

DATE=`date -u "+%y%m%d-%H%M%S"`

mv -f $DSGWD $DSGWD.backup.$DATE

#
# Download and install the patch
#
echo "Downloading patch file..."

cd /tmp
$CURL -O $PATCH_LOC/$PNAME > /dev/null 2>&1
    echo -n "Verifying patch file ... "
    VERIFY_SUM=`$MD5SUM ./$PNAME | awk '{print $1}'`
    if [ $VERIFY_SUM != $SUM1 ]; then
    echo
    echo "## Invalid MD5 checksum for patch file, Aborting. ($VERIFY_SUM != $SUM1)"
    DATE=`date -u "+%F %T"`
    $CURL $UPDATE_URL \
	-d gateway_call="$GW_CALL" \
	-d datetime="$DATE" \
	-d status="Update #3: Invalid Checksum." \
	-d trust="$TRUST_SERVER" \
	-d notify_em="" \
	-d version="$0 $VERSION<br>$KERNEL" > /dev/null 2>&1
    exit;
else
    echo "[ok]"
fi

cd $DSTARGW/dsgwd
if [ $? != 0 ]; then
    echo
    echo "Unable to chdir to $DSTARGW, Aborting!!"
    DATE=`date -u "+%F %T"`
    $CURL $UPDATE_URL \
	-d gateway_call="$GW_CALL" \
	-d datetime="$DATE" \
	-d status="Update #3: $DSTARGW not found!" \
	-d trust="$TRUST_SERVER" \
	-d notify_em="" \
	-d version="$0 $VERSION<br>$KERNEL" > /dev/null 2>&1
    exit
fi

echo "Unpacking patch file ... "
/bin/gzip -dc /tmp/$PNAME | /bin/tar -xvf -
echo "[done]"

#
# Set permissions
#
chmod 755 $DSGWD

#
# Restart everything
#
echo "Restarting Gateway Applications... "

$SERVICE dstar_gw start
/bin/sleep 2
$SERVICE dstar_gw status

#
# report to dsync site...
#

DATE=`date -u "+%F %T"`
$CURL $UPDATE_URL \
    -d gateway_call="$GW_CALL" \
    -d datetime="$DATE" \
    -d status="Update #3 Installed." \
    -d trust="$TRUST_SERVER" \
    -d notify_em="" \
    -d version="$0 $VERSION<br>$KERNEL" > /dev/null 2>&1
echo
echo "All done."