#!/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 $netmask)"
- iptables -t nat -A prerouting_${zone} -j luci_splash_prerouting
- iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -p ! tcp -j luci_splash_portal
- iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -d ! "$ipaddr" -j luci_splash_portal
- iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -d "$ipaddr" -p tcp -m multiport ! --dport 22,80,443 -j luci_splash_portal
+ 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"
}
-blacklist_add() {
- local cfg="$1"
-
- config_get mac "$cfg" mac
- [ -n "$mac" ] && iptables -t nat -I luci_splash_leases -m mac --mac-source "$mac" -j DROP
+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 classid 1:1
+}
+
+
+subnet_add() {
local cfg="$1"
-
- config_get mac "$cfg" mac
- [ -n "$mac" ] && iptables -t nat -I luci_splash_leases -m mac --mac-source "$mac" -j RETURN
+
+ 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() {
- ### Read chains from config
+ 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
- iptables -t nat -N luci_splash_portal
- iptables -t nat -N luci_splash_leases
- iptables -t nat -N luci_splash_prerouting
-
+ $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
+ $IPT6 -t mangle -I POSTROUTING -j luci_splash_mark_in
+ fi
+
### Build the main and portal rule
- config_foreach blacklist_add blacklist
- config_foreach whitelist_add whitelist
- config_foreach whitelist_add lease
config_foreach iface_add iface
+ config_foreach subnet_add subnet
+
+ ### Add the community homepage to the list of allowed destination subnets
+ hp=$(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=""
+
- ### Build the portal rule
- iptables -t nat -A luci_splash_portal -p udp --dport 33434:33523 -j RETURN
- iptables -t nat -A luci_splash_portal -p icmp -j RETURN
- iptables -t nat -A luci_splash_portal -p udp --dport 53 -j RETURN
- iptables -t nat -A luci_splash_portal -j luci_splash_leases
-
- ### Build the leases rule
- iptables -t nat -A luci_splash_leases -p tcp --dport 80 -j REDIRECT --to-ports 8082
- iptables -t nat -A luci_splash_leases -j DROP
-
+ config_foreach mac_add blacklist
+ config_foreach mac_add whitelist
+
+ #config_load luci_splash_leases
+ config_foreach mac_add lease
+
### Add crontab entry
- grep luci-splash /var/spool/cron/crontabs/root >/dev/null 2>&1 || {
- echo '*/5 * * * * /usr/sbin/luci-splash sync' >> /var/spool/cron/crontabs/root
+ 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
}
- ### Start the splash httpd
- start-stop-daemon -S -m -p /var/run/luci-splashd.pid -b -q -x /usr/bin/luci-splashd
-}
+ lock -u $LOCK
-iface_del() {
- config_get zone "$1" zone
- [ -n "$zone" ] || return 0
- while iptables -t nat -D prerouting_${zone} -j luci_splash_prerouting 2>&-; do :; done
+ ### Populate iptables
+ [ -n "$MACS" ] && luci-splash add-rules $MACS
}
stop() {
- ### Clear interface rules
+ 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
- iptables -t nat -F luci_splash_leases
- iptables -t nat -F luci_splash_portal
- iptables -t nat -F luci_splash_prerouting
-
- ### Delete subchains
- iptables -t nat -X luci_splash_leases
- iptables -t nat -X luci_splash_portal
- iptables -t nat -X luci_splash_prerouting
+ 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 $IPT -t mangle -F luci_splash_mark_in
- ### Stop the splash httpd
- start-stop-daemon -K -p /var/run/luci-splashd.pid -s KILL -q
-
+ if [ "$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 $LOCK
}
-
clear_leases() {
- stop
- while uci -P /var/state del luci_splash.@lease[0] 2>&-;do :; done
- start
+ ### Find active mac addresses
+ MACS=""
+ config_foreach mac_add lease
+
+ ### Clear leases
+ [ -n "$MACS" ] && luci-splash remove $MACS
}
projects / project / luci.git / blobdiff