applications/create_ap
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Have a common directory for common values/settings

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This fix the following bug:

1) Run create_ap instance A
2) Run create_ap instance B
3) Stop instance A

After step 3, /proc/sys/net/ipv4/ip_forward is set back to 0,
so clients of instance B they don't have Internet anymore.
This commit is contained in:
oblique 2015-05-01 21:25:49 +03:00
parent fee914c359
commit 66e8ccc814
1 changed files with 46 additions and 13 deletions
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59
create_ap
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@ -598,8 +598,6 @@ WIFI_IFACE=
VWIFI_IFACE=
INTERNET_IFACE=
BRIDGE_IFACE=
OLD_IP_FORWARD=
OLD_BRIDGE_IPTABLES=
OLD_MACADDR=
IP_ADDRS=
ROUTE_ADDRS=
@ -628,17 +626,28 @@ _cleanup() {
done
rm -rf $CONFDIR
# if we are the last create_ap instance then set back the common values
if ! has_running_instance; then
# set old ip_forward
if [[ -f $COMMON_CONFDIR/ip_forward ]]; then
cp $COMMON_CONFDIR/ip_forward /proc/sys/net/ipv4
rm -f $COMMON_CONFDIR/ip_forward
fi
# set old bridge-nf-call-iptables
if [[ -f $COMMON_CONFDIR/bridge-nf-call-iptables ]]; then
if [[ -e /proc/sys/net/bridge/bridge-nf-call-iptables ]]; then
cp $COMMON_CONFDIR/bridge-nf-call-iptables /proc/sys/net/bridge
fi
rm -f $COMMON_CONFDIR/bridge-nf-call-iptables
fi
fi
if [[ "$SHARE_METHOD" != "none" ]]; then
if [[ "$SHARE_METHOD" == "nat" ]]; then
iptables -t nat -D POSTROUTING -o ${INTERNET_IFACE} -s ${GATEWAY%.*}.0/24 -j MASQUERADE
iptables -D FORWARD -i ${WIFI_IFACE} -s ${GATEWAY%.*}.0/24 -j ACCEPT
iptables -D FORWARD -i ${INTERNET_IFACE} -d ${GATEWAY%.*}.0/24 -j ACCEPT
[[ -n "$OLD_IP_FORWARD" ]] && echo $OLD_IP_FORWARD > /proc/sys/net/ipv4/ip_forward
elif [[ "$SHARE_METHOD" == "bridge" ]]; then
if [[ -n "$OLD_BRIDGE_IPTABLES" ]]; then
echo $OLD_BRIDGE_IPTABLES > /proc/sys/net/bridge/bridge-nf-call-iptables
fi
if ! is_bridge_interface $INTERNET_IFACE; then
ip link set dev $BRIDGE_IFACE down
ip link set dev $INTERNET_IFACE down
@ -740,6 +749,24 @@ list_running() {
mutex_unlock
}
has_running_instance() {
local PID x
mutex_lock
for x in /tmp/create_ap.*; do
if [[ -f $x/pid ]]; then
PID=$(cat $x/pid)
if [[ -d /proc/$PID ]]; then
mutex_unlock
return 0
fi
fi
done
mutex_lock
return 1
}
is_running_pid() {
list_running | grep -E "^${1} " > /dev/null 2>&1
}
@ -1081,17 +1108,11 @@ if [[ $(get_adapter_kernel_module ${WIFI_IFACE}) =~ ^rtl[0-9].*$ ]]; then
fi
if [[ "$SHARE_METHOD" == "bridge" ]]; then
if [[ -e /proc/sys/net/bridge/bridge-nf-call-iptables ]]; then
OLD_BRIDGE_IPTABLES=$(cat /proc/sys/net/bridge/bridge-nf-call-iptables)
fi
if is_bridge_interface $INTERNET_IFACE; then
BRIDGE_IFACE=$INTERNET_IFACE
else
BRIDGE_IFACE=$(get_avail_bridge)
fi
elif [[ "$SHARE_METHOD" == "nat" ]]; then
OLD_IP_FORWARD=$(cat /proc/sys/net/ipv4/ip_forward)
fi
if [[ $NO_VIRT -eq 1 && "$WIFI_IFACE" == "$INTERNET_IFACE" ]]; then
@ -1111,6 +1132,18 @@ echo $$ > $CONFDIR/pid
# permitions to $CONFDIR and $CONFDIR/pid
chmod 755 $CONFDIR
chmod 444 $CONFDIR/pid
COMMON_CONFDIR=/tmp/create_ap.common.conf
mkdir -p $COMMON_CONFDIR
if [[ ! -f $COMMON_CONFDIR/ip_forward ]]; then
cp /proc/sys/net/ipv4/ip_forward $COMMON_CONFDIR
fi
if [[ ! -f $COMMON_CONFDIR/bridge-nf-call-iptables ]] &&
[[ -e /proc/sys/net/bridge/bridge-nf-call-iptables ]]; then
cp /proc/sys/net/bridge/bridge-nf-call-iptables $COMMON_CONFDIR
fi
mutex_unlock
if [[ $NO_VIRT -eq 0 ]]; then