STROK="remote IP address"
-GCOM=""
+GCOMP="comgt"
+GCOM="/usr/bin/"${GCOMP}
LOGF="/tmp/umtslogs"
PPPD_PIDFILE="/var/run/umts_pppd.pid"
DESTS_FILE="/tmp/umts_dest_file"
FILE_LOCK_SLIVER="/var/run/umts_locking_sliver"
PPP_INT="ppp0"
PPPD="pppd"
+CHAT_SCRIPTS="/etc/chatscripts"
+UMTS_CONF="/etc/umts.conf"
-function set_umts_dev(){
- local umts_dev=$1
- echo $umts_dev > $FILE_UMTS_INT
-}
function get_umts_dev(){
- if [ -e $FILE_UMTS_INT ]; then
- cat $FILE_UMTS_INT
- fi
-}
-
-function unset_umts_dev(){
- rm -f $FILE_UMTS_INT
+ echo "/dev/umts_modem"
}
-
function init_umts(){
- local found=1
-
- 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
-
- unset_umts_dev
+ #local found=1
if [ -e $LOCK_DIR ]; then
rmdir $LOCK_DIR
fi
- for i in /dev/umts_modem /dev/umts_modem1; do
- echo "Testing if the umts interface is present on the device $i..."
- if [ -e $i ]; then
- if $GCOM -d $i; then
- found=0
- set_umts_dev $i
- break
- fi
- fi
- done
-
- if ! [ $found == 0 ]; then
- echo "I couldn't find the umts device. Make a symlink from it to /dev/umts_modem."
- return 1
- fi
-
- if ! grep "umts_table" /etc/iproute2/rt_tables > /dev/null 2>&1; then
- echo "20 umts_table" >> /etc/iproute2/rt_tables
- fi
+ #if ! grep "umts_table" /etc/iproute2/rt_tables > /dev/null 2>&1; then
+ # echo "20 umts_table" >> /etc/iproute2/rt_tables
+ #fi
return 0
rm -f $DESTS_FILE
set_temp_nid $sliver_nid
-
set_routes $sliver
cat $LOGF | grep "local"
local sliver=$1
local sliver_nid=`get_nid $sliver`
+ if ! grep "umts_table" /etc/iproute2/rt_tables > /dev/null 2>&1; then
+ echo "20 umts_table" >> /etc/iproute2/rt_tables
+ fi
+
if ! lock $sliver; then
return 1
fi
echo "Already connected"
return 0;
fi
-
- if [[ `get_umts_dev` == "" ]]; then
- if [[ init_umts != 0 ]]; then
- return 1
- fi
- fi
-
- if ! [ -e `get_umts_dev` ]; then
- echo "Umts interface is 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 &
+
+
+ #exec /usr/sbin/pppd nodetach `get_umts_dev` 460800 \
+ # 0.0.0.0:0.0.0.0 \
+ # connect "/usr/sbin/chat -f ${CHAT_SCRIPTS}/vodaphone-it" > $LOGF &
echo $! > $PPPD_PIDFILE
}
-
-
function stop_umts(){
local sliver=$1
local sliver_nid=`get_nid $sliver`
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
local temp_nid=`get_temp_nid`
local ppp_addr=`get_ppp_address`
- #remarking of packets, to trigger rerouting, and SNAT
+ #Asks VNET+ to tag all the packets with the respective sliver id
iptables -t mangle -A OUTPUT -j MARK --copy-xid 0x00
+
+ #Changes the netfilter mark of packets to trigger rerouting.
+ #We need to change the mark because the kernel triggers the rerouting process only
+ #if it sees that the netfilter mark has been altered in the mangle iptables chain
iptables -t mangle -A OUTPUT -m mark --mark $sliver_nid -j MARK --set-mark $temp_nid
+
+ #Adds an SNAT rule to set the source IP address of packets that are about to go out through the UMTS
+ #interface. The kernel sets the source address of packets when the first routing process happens
+ #so, without this rule, packets would have the source ip address set on the first routing process of the ethernet interface
iptables -t nat -A POSTROUTING -o $PPP_INT -j SNAT --to-source $ppp_addr
- #restores the original mark
+ #Restores the original netfilter mark for planetflow
iptables -t mangle -I POSTROUTING 1 -m mark --mark $temp_nid -j MARK --set-mark $sliver_nid
- #forbids other slices to use the UMTS interface
+ #Forbids other slices to use the UMTS interface
iptables -t mangle -I POSTROUTING 2 -o $PPP_INT -m mark ! --mark $sliver_nid -j DROP
- #enables the explicit bind to the ppp interface
+ #Enables the explicit bind to the UMTS interface. Applications launched by the user in the slice that is using the UMTS and that
+ #bind to the UMTS interface will have packets going out through the UMTS interface
ip route flush table umts_table >/dev/null 2>&1
ip rule add from $ppp_addr fwmark $temp_nid table umts_table >/dev/null 2>&1
ip route add default dev $PPP_INT src $ppp_addr table umts_table >/dev/null 2>&1
local temp_nid=`get_temp_nid`
- #remarking and SNAT removed
+ #removing the rules for changing the mark and the rules for SNAT
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 $ppp_addr
#disable the explicit bind to the ppp interface
ip rule del from $ppp_addr fwmark $temp_nid table umts_table >/dev/null 2>&1
- #ip route del default dev $PPP_INT src $ppp_addr table umts_table >/dev/null 2>&1
+ ip route del default dev $PPP_INT src $ppp_addr table umts_table >/dev/null 2>&1
ip route flush cache >/dev/null 2>&1
}
function set_temp_nid(){
local sliver_nid=$1
local temp_nid=$((0x20000+$sliver_nid))
-
- #k=0
- #while grep :$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
echo $temp_nid > $FILE_TEMP_NID
-
-
}
+
function check_who_locked(){
local sliver=$1
local sliver_nid=`get_nid $sliver`
}
+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
+
+ 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
+}
+
function lock(){
local sliver=$1
local sliver_nid=`get_nid $sliver`
git://git.onelab.eu / planetlab-umts-tools.git / blobdiff