363 lines
10 KiB
Plaintext
363 lines
10 KiB
Plaintext
|
#!/bin/sh /etc/rc.common
|
||
|
|
|
||
|
|
START=70
|
||
|
|
EXTRA_COMMANDS=clear_leases
|
||
|
|
LIMIT_DOWN=0
|
||
|
|
LIMIT_DOWN_BURST=0
|
||
|
|
LIMIT_UP=0
|
||
|
|
TC=/usr/sbin/tc
|
||
|
|
IPT=/usr/sbin/iptables
|
||
|
|
IPT6=/usr/sbin/ip6tables
|
||
|
|
|
||
|
|
IPT_REPLAY=/var/run/luci_splash.iptlog
|
||
|
|
LOCK=/var/run/luci_splash.lock
|
||
|
|
[ -x $IPT6 ] && [ -f /proc/net/ipv6_route ] && HAS_IPV6=1
|
||
|
|
|
||
|
|
silent() {
|
||
|
|
"$@" 2>/dev/null
|
||
|
|
}
|
||
|
|
|
||
|
|
ipt_log() {
|
||
|
|
$IPT -I "$@"
|
||
|
|
echo $IPT -D "$@" >> $IPT_REPLAY
|
||
|
|
}
|
||
|
|
|
||
|
|
ipt6_log() {
|
||
|
|
[ "$HAS_IPV6" = 1 ] || return
|
||
|
|
$IPT6 -I "$@"
|
||
|
|
echo $IPT6 -D "$@" >> $IPT_REPLAY
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
iface_add() {
|
||
|
|
local cfg="$1"
|
||
|
|
|
||
|
|
config_get zone "$cfg" zone
|
||
|
|
[ -n "$zone" ] || return 0
|
||
|
|
|
||
|
|
config_get net "$cfg" network
|
||
|
|
[ -n "$net" ] || return 0
|
||
|
|
|
||
|
|
config_get ifname "$net" ifname
|
||
|
|
[ -n "$ifname" ] || return 0
|
||
|
|
|
||
|
|
config_get ipaddr "$net" ipaddr
|
||
|
|
[ -n "$ipaddr" ] || return 0
|
||
|
|
|
||
|
|
config_get netmask "$net" netmask
|
||
|
|
[ -n "$netmask" ] || return 0
|
||
|
|
|
||
|
|
config_get ip6addr "$net" ip6addr
|
||
|
|
|
||
|
|
config_get type "$net" type
|
||
|
|
|
||
|
|
parentiface="$(uci -q get network.${net}.ifname)"
|
||
|
|
|
||
|
|
[ -n "$parentiface" ] && [ ! "$type" = "bridge" ] && {
|
||
|
|
parentiface=${parentiface#@}
|
||
|
|
config_get parentproto "$parentiface" proto
|
||
|
|
config_get parentipaddr "$parentiface" ipaddr
|
||
|
|
config_get parentnetmask "$parentiface" netmask
|
||
|
|
}
|
||
|
|
|
||
|
|
eval "$(ipcalc.sh $ipaddr $netmask)"
|
||
|
|
|
||
|
|
logger -s -p info -t splash "Add $NETWORK/$PREFIX ($ifname) to splashed networks."
|
||
|
|
|
||
|
|
### Add interface specific chain entry rules
|
||
|
|
ipt_log "prerouting_${zone}_rule" -i "${ifname%:*}" -s "$NETWORK/$PREFIX" -j luci_splash_prerouting -t nat
|
||
|
|
ipt_log "forwarding_${zone}_rule" -i "${ifname%:*}" -s "$NETWORK/$PREFIX" -j luci_splash_forwarding -t filter
|
||
|
|
|
||
|
|
if [ "$HAS_IPV6" = 1 ] && [ -n "$ip6addr" ]; then
|
||
|
|
ipt6_log "forwarding_${zone}_rule" -i "${ifname%:*}" -s "$ip6addr" -j luci_splash_forwarding -t filter
|
||
|
|
fi
|
||
|
|
|
||
|
|
### Allow traffic to the same subnet
|
||
|
|
$IPT -t nat -I luci_splash_prerouting -d "$ipaddr/${netmask:-32}" -j RETURN
|
||
|
|
$IPT -t filter -I luci_splash_forwarding -d "$ipaddr/${netmask:-32}" -j RETURN
|
||
|
|
|
||
|
|
### Allow traffic to the mesh subnet
|
||
|
|
[ "$parentproto" = "static" -a -n "$parentipaddr" ] && {
|
||
|
|
$IPT -t nat -I luci_splash_prerouting -d "$parentipaddr/${parentnetmask:-32}" -j RETURN
|
||
|
|
$IPT -t filter -I luci_splash_forwarding -d "$parentipaddr/${parentnetmask:-32}" -j RETURN
|
||
|
|
}
|
||
|
|
|
||
|
|
qos_iface_add "$ifname" "$NETWORK" "$PREFIX"
|
||
|
|
}
|
||
|
|
|
||
|
|
iface_del() {
|
||
|
|
config_get zone "$1" zone
|
||
|
|
[ -n "$zone" ] || return 0
|
||
|
|
|
||
|
|
config_get net "$1" network
|
||
|
|
[ -n "$net" ] || return 0
|
||
|
|
|
||
|
|
config_get ifname "$net" ifname
|
||
|
|
[ -n "$ifname" ] || return 0
|
||
|
|
|
||
|
|
# Clear interface specific rules
|
||
|
|
[ -s $IPT_REPLAY ] && {
|
||
|
|
logger -s -p info -t splash "Remove $ifname from splashed networks."
|
||
|
|
grep -- "-i ${ifname%:*}" $IPT_REPLAY | while read ln; do silent $ln; done
|
||
|
|
sed -ie "/-i ${ifname%:*}/d" $IPT_REPLAY
|
||
|
|
}
|
||
|
|
|
||
|
|
qos_iface_del "$ifname"
|
||
|
|
}
|
||
|
|
|
||
|
|
mac_add() {
|
||
|
|
config_get mac "$1" mac
|
||
|
|
append MACS "$mac"
|
||
|
|
}
|
||
|
|
|
||
|
|
whitelist_add() {
|
||
|
|
config_get mac "$1" mac
|
||
|
|
iface=$2
|
||
|
|
$TC filter add dev "$iface" parent ffff: protocol ip prio 1 u32 match ether src $mac police pass
|
||
|
|
$TC filter add dev "$iface" parent 1:0 protocol ip prio 1 u32 match ether dst $mac classid 1:1
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
subnet_add() {
|
||
|
|
local cfg="$1"
|
||
|
|
|
||
|
|
config_get ipaddr "$cfg" ipaddr
|
||
|
|
config_get netmask "$cfg" netmask
|
||
|
|
|
||
|
|
[ -n "$ipaddr" ] && {
|
||
|
|
$IPT -t nat -I luci_splash_prerouting -d "$ipaddr/${netmask:-32}" -j RETURN
|
||
|
|
$IPT -t filter -I luci_splash_forwarding -d "$ipaddr/${netmask:-32}" -j RETURN
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
qos_iface_add() {
|
||
|
|
local iface="$1"
|
||
|
|
local network="$2"
|
||
|
|
local prefix="$3"
|
||
|
|
|
||
|
|
# 77 -> download root qdisc
|
||
|
|
# ffff -> upload root qdisc
|
||
|
|
|
||
|
|
silent $TC qdisc del dev "$iface" root handle 1:
|
||
|
|
silent $TC class del dev "$iface" parent 1: classid 1:ffff
|
||
|
|
silent $TC class del dev "$iface" parent 1: classid 1:1
|
||
|
|
silent $TC filter del dev "$iface" parent ffff: protocol ip prio 1 u32
|
||
|
|
silent $TC filter del dev "$iface" parent ffff: protocol ip prio 2 u32
|
||
|
|
silent $TC filter del dev "$iface" parent ffff: protocol ip prio 3 u32
|
||
|
|
|
||
|
|
if [ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ]; then
|
||
|
|
# Setup qdiscs
|
||
|
|
$TC qdisc add dev "$iface" root handle 1: htb default 1
|
||
|
|
silent $TC qdisc add dev "$iface" ingress
|
||
|
|
|
||
|
|
# Default class - all clients which are not otherwise handled are put in that class
|
||
|
|
# and share that bandwidth.
|
||
|
|
$TC class add dev "$iface" parent 1: classid 1:ffff htb rate ${LIMIT_DOWN}kbit
|
||
|
|
|
||
|
|
# default class and class for whitelisted clients = unlimited
|
||
|
|
$TC class add dev "$iface" parent 1: classid 1:1 htb rate 100mbit
|
||
|
|
|
||
|
|
# All traffic to the dhcp subnet is put into the limited class
|
||
|
|
$TC filter add dev "$iface" parent 1:0 protocol ip prio 3 u32 match ip dst $network/$prefix classid 1:ffff
|
||
|
|
$TC qdisc add dev "$iface" parent 1:ffff sfq perturb 10
|
||
|
|
$TC filter add dev "$iface" parent ffff: protocol ip prio 3 u32 match ip src $network/$prefix police rate ${LIMIT_UP}kbit mtu 6k burst 6k drop
|
||
|
|
|
||
|
|
# classify packets by their iptables MARK set in luci_splash_mark_in (mangle table)
|
||
|
|
# every client gets his own class and so his own bandwidth limit
|
||
|
|
$TC filter add dev "$iface" parent 1:0 protocol ip prio 2 fw
|
||
|
|
|
||
|
|
config_foreach whitelist_add whitelist $iface
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
qos_iface_del() {
|
||
|
|
local iface="$1"
|
||
|
|
silent $TC qdisc del dev "$iface" root handle 77:
|
||
|
|
}
|
||
|
|
|
||
|
|
boot() {
|
||
|
|
### Setup splash-relay
|
||
|
|
uci get uhttpd.splash 2>/dev/null || {
|
||
|
|
uci batch <<EOF
|
||
|
|
set uhttpd.splash=uhttpd
|
||
|
|
set uhttpd.splash.home="/www/cgi-bin/splash/"
|
||
|
|
set uhttpd.splash.interpreter=".sh=/bin/ash"
|
||
|
|
set uhttpd.splash.listen_http="8082"
|
||
|
|
set uhttpd.splash.index_page="splash.sh"
|
||
|
|
set uhttpd.splash.error_page="/splash.sh"
|
||
|
|
set uhttpd.splash.http_keepalive='0'
|
||
|
|
commit uhttpd
|
||
|
|
EOF
|
||
|
|
}
|
||
|
|
|
||
|
|
### We are started by the firewall include
|
||
|
|
exit 0
|
||
|
|
}
|
||
|
|
|
||
|
|
start() {
|
||
|
|
lock $LOCK
|
||
|
|
logger -s -p info -t splash "Starting luci-splash"
|
||
|
|
include /lib/network
|
||
|
|
. /lib/functions/network.sh
|
||
|
|
scan_interfaces
|
||
|
|
config_load luci_splash
|
||
|
|
|
||
|
|
### Find QoS limits
|
||
|
|
config_get LIMIT_UP general limit_up
|
||
|
|
config_get LIMIT_DOWN general limit_down
|
||
|
|
config_get LIMIT_DOWN_BURST general limit_down_burst
|
||
|
|
|
||
|
|
LIMIT_UP="$((8*${LIMIT_UP:-0}))"
|
||
|
|
LIMIT_DOWN="$((8*${LIMIT_DOWN:-0}))"
|
||
|
|
LIMIT_DOWN_BURST="${LIMIT_DOWN_BURST:+$((8*$LIMIT_DOWN_BURST))}"
|
||
|
|
LIMIT_DOWN_BURST="${LIMIT_DOWN_BURST:-$(($LIMIT_DOWN / 5 * 6))}"
|
||
|
|
|
||
|
|
### Load required modules
|
||
|
|
[ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ] && {
|
||
|
|
silent insmod act_police
|
||
|
|
silent insmod cls_fw
|
||
|
|
silent insmod cls_u32
|
||
|
|
silent insmod sch_htb
|
||
|
|
silent insmod sch_sfq
|
||
|
|
silent insmod sch_ingress
|
||
|
|
}
|
||
|
|
|
||
|
|
### Create subchains
|
||
|
|
$IPT -t nat -N luci_splash_prerouting
|
||
|
|
$IPT -t nat -N luci_splash_leases
|
||
|
|
$IPT -t filter -N luci_splash_forwarding
|
||
|
|
$IPT -t filter -N luci_splash_filter
|
||
|
|
|
||
|
|
if [ "$HAS_IPV6" = 1 ]; then
|
||
|
|
$IPT6 -t filter -N luci_splash_forwarding
|
||
|
|
$IPT6 -t filter -N luci_splash_filter
|
||
|
|
fi
|
||
|
|
|
||
|
|
### Clear iptables replay log
|
||
|
|
[ -s $IPT_REPLAY ] && . $IPT_REPLAY
|
||
|
|
echo -n > $IPT_REPLAY
|
||
|
|
|
||
|
|
### Add interface independant prerouting rules
|
||
|
|
$IPT -t nat -A luci_splash_prerouting -j luci_splash_leases
|
||
|
|
$IPT -t nat -A luci_splash_leases -p udp --dport 53 -j REDIRECT --to-ports 53
|
||
|
|
$IPT -t nat -A luci_splash_leases -p tcp --dport 80 -j REDIRECT --to-ports 8082
|
||
|
|
|
||
|
|
### Add interface independant forwarding rules
|
||
|
|
$IPT -t filter -A luci_splash_forwarding -j luci_splash_filter
|
||
|
|
$IPT -t filter -A luci_splash_filter -p tcp -j REJECT --reject-with tcp-reset
|
||
|
|
$IPT -t filter -A luci_splash_filter -j REJECT --reject-with icmp-net-prohibited
|
||
|
|
|
||
|
|
if [ "$HAS_IPV6" = 1 ]; then
|
||
|
|
$IPT6 -t filter -A luci_splash_forwarding -j luci_splash_filter
|
||
|
|
$IPT6 -t filter -A luci_splash_filter -p tcp -j REJECT --reject-with tcp-reset
|
||
|
|
$IPT6 -t filter -A luci_splash_filter -j REJECT --reject-with adm-prohibited
|
||
|
|
fi
|
||
|
|
|
||
|
|
### Add QoS chain
|
||
|
|
$IPT -t mangle -N luci_splash_mark_out
|
||
|
|
$IPT -t mangle -N luci_splash_mark_in
|
||
|
|
$IPT -t mangle -I PREROUTING -j luci_splash_mark_out
|
||
|
|
$IPT -t mangle -I POSTROUTING -j luci_splash_mark_in
|
||
|
|
|
||
|
|
if [ "$HAS_IPV6" = 1 ]; then
|
||
|
|
$IPT6 -t mangle -N luci_splash_mark_out
|
||
|
|
$IPT6 -t mangle -N luci_splash_mark_in
|
||
|
|
$IPT6 -t mangle -I PREROUTING -j luci_splash_mark_out
|
||
|
|
$IPT6 -t mangle -I POSTROUTING -j luci_splash_mark_in
|
||
|
|
fi
|
||
|
|
|
||
|
|
### Build the main and portal rule
|
||
|
|
config_foreach iface_add iface
|
||
|
|
config_foreach subnet_add subnet
|
||
|
|
|
||
|
|
### Add the community homepage to the list of allowed destination subnets
|
||
|
|
hp=$(uci -q get freifunk.community.homepage) && {
|
||
|
|
chp=${hp#http*://}
|
||
|
|
chp=${chp%%/*}
|
||
|
|
$IPT -t nat -I luci_splash_prerouting -d "${chp}/32" -j RETURN
|
||
|
|
$IPT -t filter -I luci_splash_forwarding -d "${chp}/32" -j RETURN
|
||
|
|
}
|
||
|
|
|
||
|
|
### Find active mac addresses
|
||
|
|
MACS=""
|
||
|
|
|
||
|
|
|
||
|
|
config_foreach mac_add blacklist
|
||
|
|
config_foreach mac_add whitelist
|
||
|
|
|
||
|
|
config_load luci_splash_leases
|
||
|
|
config_foreach mac_add lease
|
||
|
|
|
||
|
|
### Add crontab entry
|
||
|
|
test -f /etc/crontabs/root || touch /etc/crontabs/root
|
||
|
|
grep -q luci-splash /etc/crontabs/root || {
|
||
|
|
echo '*/5 * * * * /usr/sbin/luci-splash sync' >> /etc/crontabs/root
|
||
|
|
}
|
||
|
|
|
||
|
|
lock -u $LOCK
|
||
|
|
|
||
|
|
### Populate iptables
|
||
|
|
[ -n "$MACS" ] && luci-splash add-rules $MACS
|
||
|
|
}
|
||
|
|
|
||
|
|
stop() {
|
||
|
|
lock $LOCK
|
||
|
|
|
||
|
|
include /lib/network
|
||
|
|
scan_interfaces
|
||
|
|
config_load luci_splash
|
||
|
|
|
||
|
|
### Clear interface rules
|
||
|
|
config_foreach iface_del iface
|
||
|
|
|
||
|
|
silent $IPT -t mangle -D PREROUTING -j luci_splash_mark_out
|
||
|
|
silent $IPT -t mangle -D POSTROUTING -j luci_splash_mark_in
|
||
|
|
|
||
|
|
if [ "$HAS_IPV6" = 1 ]; then
|
||
|
|
silent $IPT6 -t mangle -D PREROUTING -j luci_splash_mark_out
|
||
|
|
silent $IPT6 -t mangle -D POSTROUTING -j luci_splash_mark_in
|
||
|
|
fi
|
||
|
|
|
||
|
|
### Clear subchains
|
||
|
|
silent $IPT -t nat -F luci_splash_prerouting
|
||
|
|
silent $IPT -t nat -F luci_splash_leases
|
||
|
|
silent $IPT -t filter -F luci_splash_forwarding
|
||
|
|
silent $IPT -t filter -F luci_splash_filter
|
||
|
|
silent $IPT -t mangle -F luci_splash_mark_out
|
||
|
|
silent $IPT -t mangle -F luci_splash_mark_in
|
||
|
|
|
||
|
|
if [ "$HAS_IPV6" = 1 ]; then
|
||
|
|
$IPT6 -t filter -F luci_splash_forwarding
|
||
|
|
$IPT6 -t filter -F luci_splash_filter
|
||
|
|
$IPT6 -t mangle -F luci_splash_mark_out
|
||
|
|
$IPT6 -t mangle -F luci_splash_mark_in
|
||
|
|
fi
|
||
|
|
|
||
|
|
### Delete subchains
|
||
|
|
silent $IPT -t nat -X luci_splash_prerouting
|
||
|
|
silent $IPT -t nat -X luci_splash_leases
|
||
|
|
silent $IPT -t filter -X luci_splash_forwarding
|
||
|
|
silent $IPT -t filter -X luci_splash_filter
|
||
|
|
silent $IPT -t mangle -X luci_splash_mark_out
|
||
|
|
silent $IPT -t mangle -X luci_splash_mark_in
|
||
|
|
if [ "$HAS_IPV6" = 1 ]; then
|
||
|
|
$IPT6 -t filter -X luci_splash_forwarding
|
||
|
|
$IPT6 -t filter -X luci_splash_filter
|
||
|
|
$IPT6 -t mangle -X luci_splash_mark_out
|
||
|
|
$IPT6 -t mangle -X luci_splash_mark_in
|
||
|
|
fi
|
||
|
|
sed -ie '/\/usr\/sbin\/luci-splash sync/d' /var/spool/cron/crontabs/root
|
||
|
|
|
||
|
|
lock -u $LOCK
|
||
|
|
}
|
||
|
|
|
||
|
|
clear_leases() {
|
||
|
|
### Find active mac addresses
|
||
|
|
MACS=""
|
||
|
|
config_foreach mac_add lease
|
||
|
|
|
||
|
|
### Clear leases
|
||
|
|
[ -n "$MACS" ] && luci-splash remove $MACS
|
||
|
|
}
|
||
|
|
|