badi/public_scripts/switchgate/switchgate - diff

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Diff for /badi/public_scripts/switchgate/switchgate between versions 1.2 and 1.5

version 1.2, 2009/12/17 11:16:34	version 1.5, 2010/01/09 04:25:42
Line 28 HOSTSET_FILE="$CONFIG_PATH/hostset"	Line 28 HOSTSET_FILE="$CONFIG_PATH/hostset"
GATEWAYS_FILE="$CONFIG_PATH/gateways"	GATEWAYS_FILE="$CONFIG_PATH/gateways"

# path to fping	# path to fping
PING=/usr/sbin/fping	PING=/usr/bin/fping

# answer of fping to reachable hosts	# answer of fping to reachable hosts
ALIVE_ANSWER="is alive"	ALIVE_ANSWER="is alive"
Line 36 ALIVE_ANSWER="is alive"	Line 36 ALIVE_ANSWER="is alive"
# set to an empty string to avoid debug output	# set to an empty string to avoid debug output
# to "low" for a few output and to anything else	# to "low" for a few output and to anything else
# for verbose output	# for verbose output
DEBUG=	DEBUG=low


# -------- Do not edit below this line --------	# -------- Do not edit below this line --------
Line 47 PINGARGS="-A -p25 -t100"	Line 47 PINGARGS="-A -p25 -t100"
## Function declarations	## Function declarations
#	#

	# parse commandline switches
	function parse_commandline {

	# check rest
	while [ "$#" -gt 0 ]; do

	case "$1" in

	-d\|--debug)
	# debug switch (another hidden feature)
	shift
	if [ "$1" != "low" ]; then
	DEBUG="choke"
	echo "Debug mode on."
	else
	#echo "Info mode on."
	DEBUG="low"
	shift
	fi
	;;

	-C)
	# Parse writeable dir request (hidden feature)
	echo "$DHCP_TMP_DIR"
	exit 0
	;;

	-q\|--query)
	# Parse query for current gw (yet another hidden feature)
	shift
	parse_commandline "$@"
	getcurrentgw
	echo "$CURRENTGW"
	exit 0
	;;

	-s\|--set)
	# Set gateway to number n (yet another hidden feature)
	shift
	set_to_gw="$1"
	shift
	parse_commandline "$@"
	set_gw
	exit 0
	;;

	*)
	echo "Invalid argument \"$1\"."
	exit 1
	;;

	esac
	done
	}

# Read gateways from file	# Read gateways from file
function readgwlist {	function readgwlist {
if [ -f "$GATEWAYS_FILE" ]; then	if [ -f "$GATEWAYS_FILE" ]; then
Line 85 function readgwlist {	Line 140 function readgwlist {
unset alldhcpgates	unset alldhcpgates
done	done
fi	fi

if [ "$number_of_gws" -eq 0 ]; then	if [ "$number_of_gws" -eq 0 ]; then
echo "No gateways configured. Please edit $GATEWAYS_FILE."	echo "No gateways configured. Please edit $GATEWAYS_FILE."
exit 1	exit 1
Line 121 function checkconnection {	Line 176 function checkconnection {
if [ -n "$DEBUG" ]; then	if [ -n "$DEBUG" ]; then
if [ -n "$UP" ]; then	if [ -n "$UP" ]; then
echo "The connection is up."	echo "The connection is up."
else	else
echo "The connection is down."	echo "The connection is down."
fi	fi
fi	fi
Line 134 function checkgw {	Line 189 function checkgw {
echo "$NEWGW is reachable."	echo "$NEWGW is reachable."
fi	fi
else	else
if [ -n "$DEBUG" ]; then	if [ -n "$DEBUG" ]; then
echo "$NEWGW is not reachable."	echo "$NEWGW is not reachable."
fi	fi
NEWGW=""	NEWGW=""
fi	fi
}	}

	# Get the current default gateway (or set it, if there was none set)
function getcurrentgw {	function getcurrentgw {
iproute_default_gw_txt="$(ip route show scope global)"	iproute_default_gw_txt="$(ip route show scope global)"
if [ `echo $iproute_default_gw_txt \| grep -c default` -gt 1 ]; then	if [ `echo $iproute_default_gw_txt \| grep -c default` -gt 1 ]; then
Line 148 function getcurrentgw {	Line 204 function getcurrentgw {
exit 1	exit 1
else	else
iproute_default_gw_txt="$(echo "$iproute_default_gw_txt" \| grep "default via")"	iproute_default_gw_txt="$(echo "$iproute_default_gw_txt" \| grep "default via")"
fi	fi
if [ -z "$iproute_default_gw_txt" ]; then	if [ -z "$iproute_default_gw_txt" ]; then
# no default gateway currently set, set to the highest index, to land on GW0	# no default gateway currently set, set to the highest index, to land on GW0
CURRENTGW_ID=0	CURRENTGW_ID=0
CURRENTGW=${GW[$CURRENTGW_ID]}	CURRENTGW=${GW[$CURRENTGW_ID]}
CURRENTGW_DEV="unknown"
echo "No default gateway currently set. Setting it now to $CURRENTGW."	echo "No default gateway currently set. Setting it now to $CURRENTGW."
ip route add default via $CURRENTGW	ip route add default via $CURRENTGW
	if [ $? -eq 2 ]; then
	echo "Not able to switch default gateway. Is your interface up?"
	exit 1
	fi
else	else
CURRENTGW=`echo $iproute_default_gw_txt \| sed "s/^default via $\([0-9]\+\.\?$\{4\}\).*\$/\1/"`	CURRENTGW=`echo $iproute_default_gw_txt \| sed "s/^default via $\([0-9]\+\.\?$\{4\}\).*\$/\1/"`
CURRENTGW_DEV=`echo $iproute_default_gw_txt \| sed "s/^default via .* dev $eth[0-9]\+$.*\$/\1/"`
fi	fi
	CURRENTGW_DEV=`echo $iproute_default_gw_txt \| sed "s/^default via .* dev $eth[0-9]\+$.*\$/\1/"`

# get index of current gateway	# get index of current gateway
index=-1	index=-1
Line 201 function getnextgw {	Line 260 function getnextgw {
function getnewgw {	function getnewgw {
getnextgw	getnextgw
# Check wheter all gateways are already tested and failed	# Check wheter all gateways are already tested and failed
if [ "$NEWGW_ID" -eq "$CURRENTGW_ID" ]; then	if [[ "$NEWGW_ID" -eq "$CURRENTGW_ID" && -z $set_to_gw ]]; then
if [ -n "$DEBUG" ]; then	if [ -n "$DEBUG" ]; then
echo "All gateways tried."	echo "All gateways tried."
fi	fi
Line 227 function getnewgw {	Line 286 function getnewgw {
fi	fi
}	}

	# Switch the gateway to a desired gateway
	function set_gw {

	# get name of gateway
	if [[ ! "$set_to_gw" =~ ^[0-9]{1,}$ ]]; then
	echo "Only positive numbers allowed. Invalid value \"$set_to_gw\"."
	exit 1
	fi

	NEWGW=${GW[$set_to_gw]}
	if [ -z "$NEWGW" ]; then
	echo "The gateway number $set_to_gw is not in the list of available gateways."
	echo "Valid gateways are:"
	for ((gw=0; gw<${#GW[*]}; gw++)); do
	echo -e "\t$gw (${GW[$gw]})"
	done
	exit 1
	fi
	if [ -n "$DEBUG" -a "$DEBUG" != "low" ]; then
	echo "Default gateway desired: $NEWGW ($set_to_gw)"
	fi

	getcurrentgw
	NEWGW_ID=$[ $set_to_gw - 1 ]
	switchgw
	}

function switchgw {	function switchgw {
getnewgw	getnewgw
if [ -n "$NEWGW" ]; then	if [ -n "$NEWGW" ]; then
if [ "$DEBUG" = "low" ]; then	if [ "$DEBUG" = "low" ]; then
echo -n "Switching default gateway now to $NEWGW ($NEWGW_ID)..."	echo -n "Switching default gateway now to $NEWGW ($NEWGW_ID)..."
fi	fi

iproute_msg="$(ip route change default via $NEWGW 2>&1 )"	iproute_msg="$(ip route change default via $NEWGW 2>&1 )"
iproute_exit=$?	iproute_exit=$?

Line 241 function switchgw {	Line 327 function switchgw {
sleep 1	sleep 1
GARBAGE=`$PING -q -c 5 -t100 -p50 -A -f $HOSTSET_FILE 2> /dev/null`	GARBAGE=`$PING -q -c 5 -t100 -p50 -A -f $HOSTSET_FILE 2> /dev/null`
sleep 1	sleep 1

if [ "$DEBUG" = "low" ]; then	if [ "$DEBUG" = "low" ]; then
echo "done."	echo "done."
fi	fi
Line 274 function switchgw {	Line 360 function switchgw {
## MAIN	## MAIN
#	#

# Parse writeable dir request (hidden feature)
if [ "$1" = "-C" ]; then
echo "$DHCP_TMP_DIR"
exit 0
fi

# Parse debug switch (another hidden feature)	# Check fping existence
if [ "$1" = "-d" ]; then	if [ ! -x "$PING" ]; then
if [ "$2" != "low" ]; then	echo -e "Error: Ping program not executable or not found at $PING.\nPlease configure the full path in $0."
echo "Debug mode on."	exit 1
DEBUG="choke"
else
#echo "Info mode on."
DEBUG="low"
fi
fi	fi

# Get all gateways, we can forward traffic	# Get all gateways, we can forward traffic
readgwlist	readgwlist

# Parse query for current gw (yet another hidden feature)	# parse commandline switches
if [ "$1" = "-q" ]; then	parse_commandline "$@"
DEBUG=
getcurrentgw
echo "$CURRENTGW"
exit 0
fi

# get current gw	# get current gw
getcurrentgw	getcurrentgw
Line 321 if [ -z "$UP" ]; then	Line 392 if [ -z "$UP" ]; then
checkgw	checkgw
if [ -z "$NEWGW" ]; then	if [ -z "$NEWGW" ]; then
echo "Gateway $CURRENTGW is down."	echo "Gateway $CURRENTGW is down."
else	else
echo "No connection through gateway $CURRENTGW."	echo "No connection through gateway $CURRENTGW."
fi	fi

NEWGW_ID=$CURRENTGW_ID	NEWGW_ID=$CURRENTGW_ID
switchgw	switchgw

else	else
# If the current gateway is not the standard default gateway, try if the connection	# If the current gateway is not the standard default gateway, try if the connection
# through the standard default gateway is back	# through the standard default gateway is back
Line 347 fi	Line 418 fi

# send an eMail if the connection is down or limited	# send an eMail if the connection is down or limited
if [ -z "$UP" ]; then	if [ -z "$UP" ]; then
EMAIL_BODY="Switchgate on $(hostname -f) reports: No connection!\n\n\nTime:\t\t$(date)\nGateway:\t$CURRENTGW ($CURRENTGW_ID)"	EMAIL_BODY="Switchgate on $(hostname -f) reports: No connection!\n\nTime:\t\t$(date)\nGateway:\t$CURRENTGW ($CURRENTGW_ID)"
EMAIL_SUBJECT="Attention: $(hostname -f) has no connection!"	EMAIL_SUBJECT="Attention: $(hostname -f) has no connection!"
echo -e "$EMAIL_BODY" \| mail -s "$EMAIL_SUBJECT" "$ALERT_EMAIL"	echo -e "$EMAIL_BODY" \| mail -s "$EMAIL_SUBJECT" "$ALERT_EMAIL"
if [[ -n "$DEBUG" && "$DEBUG" != "low" ]]; then	if [[ -n "$DEBUG" && "$DEBUG" != "low" ]]; then
echo "Alert message sent to $ALERT_EMAIL."	echo "Alert message sent to $ALERT_EMAIL."
fi	fi
elif [ "$CURRENTGW_ID" != 0 ]; then	elif [ "$CURRENTGW_ID" != 0 ]; then
EMAIL_BODY="Switchgate on $(hostname -f) reports: Not operating on standard default gateway!\n\n\nTime:\t\t$(date)\nGateway:\t$CURRENTGW ($CURRENTGW_ID)"	EMAIL_BODY="Switchgate on $(hostname -f) reports: Not operating on standard default gateway!\n\nTime:\t\t$(date)\nGateway:\t$CURRENTGW ($CURRENTGW_ID)"
EMAIL_SUBJECT="Attention: $(hostname -f) Not operating on standard default gateway!"	EMAIL_SUBJECT="Attention: $(hostname -f) not operating on standard default gateway!"
echo -e "$EMAIL_BODY" \| mail -s "$EMAIL_SUBJECT" "$ALERT_EMAIL"	echo -e "$EMAIL_BODY" \| mail -s "$EMAIL_SUBJECT" "$ALERT_EMAIL"
if [[ -n "$DEBUG" && "$DEBUG" != "low" ]]; then	if [[ -n "$DEBUG" && "$DEBUG" != "low" ]]; then
echo "Alert message sent to $ALERT_EMAIL."	echo "Alert message sent to $ALERT_EMAIL."

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Removed from v.1.2
changed lines
	Added in v.1.5