#!/bin/bash
-PPPD_PIDFILE=/var/run/umts_pppd.pid
-
-PPPD=pppd
STROK="remote IP address"
-
-PPP_INT=ppp0
-
-GCOM=""
-
+GCOMP="comgt"
+GCOM="/usr/bin/"${GCOMP}
LOGF="/tmp/umtslogs"
-
+PPPD_PIDFILE="/var/run/umts_pppd.pid"
DESTS_FILE="/tmp/umts_dest_file"
-
FILE_TEMP_NID="/tmp/umts_temp_nid"
-
FILE_UMTS_INT="/tmp/umts_dev"
+LOCK_DIR="/tmp/umts_lock_d"
+FILE_LOCK_SLIVER="/tmp/umts_locking_sliver"
+PPP_INT="ppp0"
+PPPD="pppd"
+CHAT_SCRIPTS="/etc/chatscripts"
+UMTS_CONF="/etc/umts.conf"
-function set_umts_dev(){
- echo $1 > $FILE_UMTS_INT
-}
function get_umts_dev(){
- cat $FILE_UMTS_INT
+ echo "/dev/umts_modem"
}
-
-function start_gcom(){
- if ! $GCOM -d `get_umts_dev`; then
- return 1;
- fi
-
- return 0
-}
-
-function init(){
- local found=1
-
- modprobe nozomi
- modprobe serial_cs
-
- if [ -f /usr/bin/gcom ]; then
- GCOM=/usr/bin/gcom
- elif [ -f /usr/bin/comgt ]; then
- GCOM=/usr/bin/comgt
- else
- echo "I couldn't find gcom"
- return 1;
- fi
-
- for i in /dev/umts_modem /dev/umts_modem1; do
- echo "Testing if the umts interface is present on the device $i..."
- if $GCOM -d $i; then
- found=0
- set_umts_dev $i
- break
- fi
- done
+function init_umts(){
+ #local found=1
- if ! [ $found == 0 ]; then
- echo "I couldn't find the umts device; make a symlink from it to /dev/umts_modem"
- return 1
+ if [ -e $LOCK_DIR ]; then
+ rmdir $LOCK_DIR
fi
- if ! grep umts_table /etc/iproute2/rt_tables > /dev/null 2>&1; then
- echo "20 umts_table" >> /etc/iproute2/rt_tables
- fi
+ # the routing table is now managed by sliceip
+ #if ! grep "umts_table" /etc/iproute2/rt_tables > /dev/null 2>&1; then
+ # echo "20 umts_table" >> /etc/iproute2/rt_tables
+ #fi
return 0
#called when the connection is started
function conn_on(){
local sliver=$1
- #local sliver_nid=$2
#DESTS_FILE contains added destinations
rm -f $DESTS_FILE
- touch $DESTS_FILE > /dev/null 2>&1
-
- set_temp_nid $sliver_nid
-
- set_routes $sliver
cat $LOGF | grep "local"
return 0
}
-#called when the connection is terminated
+#called when the connection is terminated to remove the rules
+#on the destinations reachable thorugh the UMTS device
function conn_off(){
local sliver=$1
- #local sliver_nid=$2
+ local ppp_addr=$2
- unset_routes $sliver
+# Not needed anymore as the killing of the PPP connection
+# makes the rules pointing to it automatically disappear.
- for i in `cat $DESTS_FILE`; do
- del_destination $i $sliver > /dev/null 2>&1
- done
+# for i in `cat $DESTS_FILE`; do
+# del_destination $i $sliver > /dev/null 2>&1
+# done
rm $DESTS_FILE >/dev/null 2>&1
}
function start_umts(){
local sliver=$1
local sliver_nid=`get_nid $sliver`
-
-
+
+ if ! lock $sliver; then
+ return 1
+ fi
+
if status_umts; then
echo "Already connected"
return 0;
fi
-
- if ! [ -c `get_umts_dev` ]; then
- echo "Umts interface not present"
+
+ echo "Starting GCOM..."
+ if ! $GCOM -d `get_umts_dev`; then
+ unlock $sliver
return 1
fi
rm -f $LOGF
+ if [ -e $UMTS_CONF ]; then
+ . $UMTS_CONF
+ fi
+
+ if ! [[ $APN ]]; then
+ APN="web.omnitel.it"
+ fi
+ if ! [[ $NUM ]]; then
+ NUM="*99***1#"
+ fi
+
+
exec /usr/sbin/pppd nodetach `get_umts_dev` 460800 \
0.0.0.0:0.0.0.0 \
connect "/usr/sbin/chat -v \
ABORT '\nNO ANSWER\r' \
ABORT '\nRINGING\r\n\r\nRINGING\r' \
'' ATZ OK 'ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0' OK \
- ATD*99***1# CONNECT ''" > $LOGF &
+ 'AT+CGDCONT=1,\"IP\",\"$APN\"' OK \
+ ATD$NUM CONNECT ''" > $LOGF &
+
echo $! > $PPPD_PIDFILE
-
sleep 5s; #waiting for the interface to establish the link
if grep "$STROK" $LOGF >/dev/null 2>&1; then
-
conn_on $sliver $sliver_nid
else
#second try
- sleep 4s;
+ sleep 5s;
if grep "$STROK" $LOGF >/dev/null 2>&1; then
conn_on $sliver $sliver_nid
else
}
-
-
+# stop the UMTS connection by killing the pppd daemon and
+# then by calling conn_off
function stop_umts(){
local sliver=$1
+ local sliver_nid=`get_nid $sliver`
+ local ppp_addr
if ! [ -e $PPPD_PIDFILE ]; then
echo "Disconnected"
return 0;
fi
+ ppp_addr=`get_ppp_address`
+
+ if ! check_who_locked $sliver; then
+ return 1
+ fi
+
PID=`cat $PPPD_PIDFILE`;
if [ -d /proc/$PID ] && grep $PPPD /proc/$PID/cmdline >/dev/null 2>&1; then
- #del_interface $1;
- conn_off $sliver `get_nid $sliver`
- kill $PID;
- sleep 5;
+ kill $PID;
+ touch $DESTS_FILE
+ sleep 2s;
fi
if status_umts; then
return 1;
else
+ conn_off $sliver $ppp_addr
cat $LOGF | grep "time"
rm $PPPD_PIDFILE
+ unlock $sliver;
return 0
fi
}
-
+# check the status of the umts connection by looking at then
+# state of pppd daemon
function status_umts(){
-
+ local sliver=$1
+
if ! [ -e $PPPD_PIDFILE ]; then return 1; fi
-
PID=`cat $PPPD_PIDFILE`
if [ -d /proc/$PID ] && grep $PPPD /proc/$PID/cmdline >/dev/null 2>&1; then
- return 0;
+ return 0;
else
return 1;
fi
}
-#add the ppp interface from the slice - not used at the moment
+#add the ppp interface to the slice - not used at the moment
function add_interface(){
local nid=`get_nid $1`
$NADDRESS --add --nid $nid --ip $PPP_INT >>$LOGFILE 2>&1;
id -u ${1}
}
-function set_routes(){
- local sliver=$1
- local sliver_nid=`get_nid $sliver`
- local temp_nid=`get_temp_nid`
- local ppp_addr=`get_ppp_address`
-
- #remarking of packets to trigger rerouting and SNAT
- iptables -t mangle -A OUTPUT -j MARK --copy-xid 0x00
- iptables -t mangle -A OUTPUT -m mark --mark $sliver_nid -j MARK --set-mark $temp_nid
- iptables -t nat -A POSTROUTING -o $PPP_INT -j SNAT --to-source `get_ppp_address`
- iptables -t mangle -I POSTROUTING 1 -m mark --mark $temp_nid -j MARK --set-mark $sliver_nid
-
- #enable the explicit bind to the ppp interface
- ip route flush table umts_table >/dev/null 2>&1
- ip rule add from $ppp_addr fwmark `get_temp_nid` table umts_table >/dev/null 2>&1
- ip route add default dev $PPP_INT src `get_ppp_address` table umts_table >/dev/null 2>&1
- ip route flush cache >/dev/null 2>&1
-}
-function unset_routes(){
- local sliver=$1
- local sliver_nid=`get_nid $sliver`
- local temp_nid=`get_temp_nid`
- local ppp_addr=`get_ppp_address`
-
- #remarking and SNAT removed
- iptables -t mangle -D OUTPUT -j MARK --copy-xid 0x00
- iptables -t mangle -D OUTPUT -m mark --mark $sliver_nid -j MARK --set-mark $temp_nid
- iptables -t nat -D POSTROUTING -o $PPP_INT -j SNAT --to-source `get_ppp_address`
- iptables -t mangle -D POSTROUTING -m mark --mark $temp_nid -j MARK --set-mark $sliver_nid
+# check if sliceip is activated for the slice
+function check_sliceip(){
+
+ if ! [ -e /vsys/sliceip ]; then
+ echo "Sliceip is not installed. Exiting."
+ return 1
+ fi
+
+}
- #disable the explicit bind to the ppp interface
- ip rule del from $ppp_addr fwmark `get_temp_nid` table umts_table >/dev/null 2>&1
- ip route del default dev $PPP_INT src `get_ppp_address` table umts_table >/dev/null 2>&1
- ip route flush cache >/dev/null 2>&1
+# Deliver a command to sliceip (basically to set the destinations to be
+# reached through the UMTS device)
+function sliceip_cmd(){
+ local command=$2
+ local sliver=$1
+
+ echo "$command" | /vsys/sliceip $sliver
+
}
+# Add a destination to be reached through the UMTS device
function add_destination(){
local dest="$1"
local sliver=$2
-
- local sliver_nid=`get_nid $sliver`
-
- local temp_nid=`get_temp_nid`
if [[ ! $dest ]]; then return 1; fi
if ! status_umts; then
return 1;
fi
-
- if ip rule add to "$dest" fwmark $temp_nid table umts_table >/dev/null 2>&1; then
- echo "$dest" >> $DESTS_FILE
- return 0
- else
- return 1
+
+ if ! check_who_locked $sliver; then
+ return 1;
fi
- ip route flush cache >/dev/null 2>&1
+
+ sliceip_cmd $sliver "route add $dest dev ${PPP_INT}"
+
}
+# Delete a destination that was previously reached through the UMTS device.
function del_destination(){
local dest="$1"
local sliver=$2
-
- local sliver_nid=`get_nid $sliver`
-
- local temp_nid=`get_temp_nid`
-
+
if [[ ! $dest ]]; then return 1; fi
- #old - if ip route del to "$dest" dev $PPP_INT >/dev/null 2>&1; then
- if ip rule del to "$dest" fwmark $temp_nid table umts_table >/dev/null 2>&1; then
- return 0;
- else
+
+ if ! check_who_locked $sliver; then
return 1;
fi
- ip route flush cache >/dev/null 2>&1
+
+ sliceip_cmd $sliver "route del $dest dev ${PPP_INT}";
+
}
ifconfig $PPP_INT | grep inet\ addr | cut -d ":" -f 2 | cut -d " " -f 1
}
-function set_temp_nid(){
- local sliver_nid=$1
- local temp_nid=$((0x20000+$sliver_nid))
- #k=0
- #temp_nid=$sliver_nid
+function check_who_locked(){
+ local sliver=$1
+ local sliver_nid=`get_nid $sliver`
+ local ret=0
+
+ if [ -e $LOCK_DIR ]; then
+ if [[ `cat $FILE_LOCK_SLIVER` != $sliver_nid ]]; then
+ echo "Interface in use by another slice.";
+ ret=1
+ fi
+ else
+ ret=1
+ fi
+
+ return $ret
+
+}
+
+# kill the gcom daemon
+function kill_gcom(){
+
+ killall $GCOMP
+ sleep 3
+ if ! ps -C $GCOMP >/dev/null 2>&1; then
+ echo "$GCOMP terminated."
+ else
+ echo "$GCOMP still alive. Try kill -9"
+ sleep 2
+
+ killall -9 $GCOMP
- #while grep :$temp_nid: /etc/passwd; do
- # temp_nid=$((temp_nid+1))
- # k=$((k+1))
- # if [[ $k == 1000 ]]; then
- # logger "Fatal error: I couldn't find a temp_nid"
- # stop_umts
- # exit 1
- # fi
- #done
+ if ! ps -C $GCOMP >/dev/null 2>&1; then
+ echo "$GCOMP terminated."
+ else
+ echo "Couldn't stop $GCOMP. Please contact administrators for assistance."
+ fi
+ fi
+}
+
+# lock the umts connection to a specific sliver.
+# only one sliver at a given time can use the UMTS device
+function lock(){
+ local sliver=$1
+# local sliver_nid=`get_nid $sliver`
+ local ret=0
- echo $temp_nid > $FILE_TEMP_NID
+ if [ -e $LOCK_DIR ]; then
+ if ! check_who_locked $sliver; then
+ ret=1
+ fi
+ else
+ if mkdir $LOCK_DIR >/dev/null 2>&1; then
+ echo "$sliver_nid" > $FILE_LOCK_SLIVER
+ else
+ ret=1
+ fi
+ fi
+
+ return $ret
+}
+
+function unlock(){
+ local sliver=$1
+ local sliver_nid=`get_nid $sliver`
+ local ret=0
+ if ! [ -e $LOCK_DIR ]; then
+ ret=1
+ else
+ if ! check_who_locked $sliver; then
+ ret=1
+ else
+ if ! rmdir $LOCK_DIR; then
+ ret=1
+ fi
+ fi
+ fi
+ return $ret
}
+
+
+# checks an ip addresse for validity
function valid_dotted_quad(){
oldIFS=$IFS
IFS=.
git://git.onelab.eu / planetlab-umts-tools.git / blobdiff