| Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame^] | 1 | #!/bin/sh |
| 2 | |
| 3 | IFNAME=$1 |
| 4 | CMD=$2 |
| 5 | |
| 6 | kill_daemon() { |
| 7 | NAME=$1 |
| 8 | PF=$2 |
| 9 | |
| 10 | if [ ! -r $PF ]; then |
| 11 | return |
| 12 | fi |
| 13 | |
| 14 | PID=`cat $PF` |
| 15 | if [ $PID -gt 0 ]; then |
| 16 | if ps $PID | grep -q $NAME; then |
| 17 | kill $PID |
| 18 | fi |
| 19 | fi |
| 20 | rm $PF |
| 21 | } |
| 22 | |
| 23 | if [ "$CMD" = "P2P-GROUP-STARTED" ]; then |
| 24 | GIFNAME=$3 |
| 25 | if [ "$4" = "GO" ]; then |
| 26 | kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid |
| 27 | rm /var/run/dhclient.leases-$GIFNAME |
| 28 | kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME |
| 29 | ifconfig $GIFNAME 192.168.42.1 up |
| 30 | if ! dnsmasq -x /var/run/dnsmasq.pid-$GIFNAME \ |
| 31 | -i $GIFNAME \ |
| 32 | -F192.168.42.11,192.168.42.99; then |
| 33 | # another dnsmasq instance may be running and blocking us; try to |
| 34 | # start with -z to avoid that |
| 35 | dnsmasq -x /var/run/dnsmasq.pid-$GIFNAME \ |
| 36 | -i $GIFNAME \ |
| 37 | -F192.168.42.11,192.168.42.99 --listen-address 192.168.42.1 -z |
| 38 | fi |
| 39 | fi |
| 40 | if [ "$4" = "client" ]; then |
| 41 | kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid |
| 42 | rm /var/run/dhclient.leases-$GIFNAME |
| 43 | kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME |
| 44 | dhclient -pf /var/run/dhclient-$GIFNAME.pid \ |
| 45 | -lf /var/run/dhclient.leases-$GIFNAME \ |
| 46 | -nw \ |
| 47 | $GIFNAME |
| 48 | fi |
| 49 | fi |
| 50 | |
| 51 | if [ "$CMD" = "P2P-GROUP-REMOVED" ]; then |
| 52 | GIFNAME=$3 |
| 53 | if [ "$4" = "GO" ]; then |
| 54 | kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME |
| 55 | ifconfig $GIFNAME 0.0.0.0 |
| 56 | fi |
| 57 | if [ "$4" = "client" ]; then |
| 58 | kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid |
| 59 | rm /var/run/dhclient.leases-$GIFNAME |
| 60 | ifconfig $GIFNAME 0.0.0.0 |
| 61 | fi |
| 62 | fi |
| 63 | |
| 64 | if [ "$CMD" = "P2P-CROSS-CONNECT-ENABLE" ]; then |
| 65 | GIFNAME=$3 |
| 66 | UPLINK=$4 |
| 67 | # enable NAT/masquarade $GIFNAME -> $UPLINK |
| 68 | iptables -P FORWARD DROP |
| 69 | iptables -t nat -A POSTROUTING -o $UPLINK -j MASQUERADE |
| 70 | iptables -A FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT |
| 71 | iptables -A FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT |
| 72 | sysctl net.ipv4.ip_forward=1 |
| 73 | fi |
| 74 | |
| 75 | if [ "$CMD" = "P2P-CROSS-CONNECT-DISABLE" ]; then |
| 76 | GIFNAME=$3 |
| 77 | UPLINK=$4 |
| 78 | # disable NAT/masquarade $GIFNAME -> $UPLINK |
| 79 | sysctl net.ipv4.ip_forward=0 |
| 80 | iptables -t nat -D POSTROUTING -o $UPLINK -j MASQUERADE |
| 81 | iptables -D FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT |
| 82 | iptables -D FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT |
| 83 | fi |