282 lines
7.6 KiB
Bash
Executable File
282 lines
7.6 KiB
Bash
Executable File
#!/bin/sh /etc/rc.common
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START=70
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EXTRA_COMMANDS=clear_leases
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LIMIT_DOWN=0
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LIMIT_DOWN_BURST=0
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LIMIT_UP=0
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IPT_REPLAY=/var/run/luci_splash.iptlog
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LOCK=/var/run/luci_splash.lock
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include /lib/network
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scan_interfaces
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config_load luci_splash
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silent() {
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"$@" 2>/dev/null
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}
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ipt_log() {
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iptables -I "$@"
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echo iptables -D "$@" >> $IPT_REPLAY
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}
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iface_add() {
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local cfg="$1"
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config_get zone "$cfg" zone
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[ -n "$zone" ] || return 0
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config_get net "$cfg" network
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[ -n "$net" ] || return 0
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config_get ifname "$net" ifname
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[ -n "$ifname" ] || return 0
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config_get ipaddr "$net" ipaddr
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[ -n "$ipaddr" ] || return 0
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config_get netmask "$net" netmask
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[ -n "$netmask" ] || return 0
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config_get parentiface "$net" interface
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[ -n "$parentiface" ] && {
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config_get parentproto "$parentiface" proto
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config_get parentipaddr "$parentiface" ipaddr
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config_get parentnetmask "$parentiface" netmask
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}
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eval "$(ipcalc.sh $ipaddr $netmask)"
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### Add interface specific chain entry rules
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ipt_log "zone_${zone}_prerouting" -i "${ifname%:*}" -s "$NETWORK/$PREFIX" -j luci_splash_prerouting -t nat
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ipt_log "zone_${zone}_forward" -i "${ifname%:*}" -s "$NETWORK/$PREFIX" -j luci_splash_forwarding -t filter
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### Allow traffic to the same subnet
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iptables -t nat -I luci_splash_prerouting -d "$ipaddr/${netmask:-32}" -j RETURN
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iptables -t filter -I luci_splash_forwarding -d "$ipaddr/${netmask:-32}" -j RETURN
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### Allow traffic to the mesh subnet
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[ "$parentproto" = "static" -a -n "$parentipaddr" ] && {
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iptables -t nat -I luci_splash_prerouting -d "$parentipaddr/${parentnetmask:-32}" -j RETURN
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iptables -t filter -I luci_splash_forwarding -d "$parentipaddr/${parentnetmask:-32}" -j RETURN
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}
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qos_iface_add "$ifname"
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}
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iface_del() {
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config_get zone "$1" zone
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[ -n "$zone" ] || return 0
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config_get net "$1" network
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[ -n "$net" ] || return 0
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config_get ifname "$net" ifname
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[ -n "$ifname" ] || return 0
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# Clear interface specific rules
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[ -s $IPT_REPLAY ] && {
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grep -- "-i ${ifname%:*}" $IPT_REPLAY | while read ln; do silent $ln; done
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sed -ie "/-i ${ifname%:*}/d" $IPT_REPLAY
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}
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qos_iface_del "$ifname"
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}
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mac_add() {
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config_get mac "$1" mac
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append MACS "$mac"
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}
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subnet_add() {
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local cfg="$1"
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config_get ipaddr "$cfg" ipaddr
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config_get netmask "$cfg" netmask
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[ -n "$ipaddr" ] && {
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iptables -t nat -I luci_splash_prerouting -d "$ipaddr/${netmask:-32}" -j RETURN
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iptables -t filter -I luci_splash_forwarding -d "$ipaddr/${netmask:-32}" -j RETURN
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}
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}
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qos_iface_add() {
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local iface="$1"
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# 77 -> download root qdisc
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# 78 -> upload root qdisc
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# 79 -> fwmark: client->inet
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# 80 -> fwmark: inet->client
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silent tc qdisc del dev "$iface" root handle 77:
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if [ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ]; then
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tc qdisc add dev "$iface" root handle 77: htb
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# assume maximum rate of 20.000 kilobit for wlan
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tc class add dev "$iface" parent 77: classid 77:1 htb rate 20000kbit
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# set download limit and burst
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tc class add dev "$iface" parent 77:1 classid 77:10 htb \
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rate ${LIMIT_DOWN}kbit ceil ${LIMIT_DOWN_BURST}kbit prio 2
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tc qdisc add dev "$iface" parent 77:10 handle 78: sfq perturb 10
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# adding ingress can result in "File exists" if qos-scripts are active
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silent tc qdisc add dev "$iface" ingress
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# set client download speed
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tc filter add dev "$iface" parent 77: protocol ip prio 2 \
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handle 80 fw flowid 77:10
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# set client upload speed
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tc filter add dev "$iface" parent ffff: protocol ip prio 1 \
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handle 79 fw police rate ${LIMIT_UP}kbit mtu 6k burst 6k drop
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fi
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}
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qos_iface_del() {
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local iface="$1"
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silent tc qdisc del dev "$iface" root handle 77:
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silent tc qdisc del dev "$iface" root handle 78:
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silent tc filter del dev "$iface" parent ffff: protocol ip prio 1 handle 79 fw
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}
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boot() {
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### Setup splash-relay
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uci get lucid.splashr 2>/dev/null || {
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uci batch <<EOF
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set lucid.splashr=daemon
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set lucid.splashr.slave=httpd
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add_list lucid.splashr.address=8082
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add_list lucid.splashr.publisher=splashredir
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set lucid.splashr.enabled=1
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set lucid.splashredir=Redirector
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set lucid.splashredir.name=Splashd
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set lucid.splashredir.virtual='/'
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set lucid.splashredir.physical=':80/luci/splash'
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commit lucid
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EOF
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}
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### We are started by the firewall include
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exit 0
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}
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start() {
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lock -w $LOCK && lock $LOCK
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### Find QoS limits
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config_get LIMIT_UP general limit_up
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config_get LIMIT_DOWN general limit_down
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config_get LIMIT_DOWN_BURST general limit_down_burst
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LIMIT_UP="$((8*${LIMIT_UP:-0}))"
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LIMIT_DOWN="$((8*${LIMIT_DOWN:-0}))"
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LIMIT_DOWN_BURST="${LIMIT_DOWN_BURST:+$((8*$LIMIT_DOWN_BURST))}"
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LIMIT_DOWN_BURST="${LIMIT_DOWN_BURST:-$(($LIMIT_DOWN / 5 * 6))}"
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### Load required modules
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[ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ] && {
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silent insmod cls_fw
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silent insmod cls_u32
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silent insmod sch_htb
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silent insmod sch_sfq
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silent insmod sch_ingress
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}
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### Create subchains
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iptables -t nat -N luci_splash_prerouting
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iptables -t nat -N luci_splash_leases
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iptables -t filter -N luci_splash_forwarding
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iptables -t filter -N luci_splash_filter
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### Clear iptables replay log
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[ -s $IPT_REPLAY ] && . $IPT_REPLAY
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echo -n > $IPT_REPLAY
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### Build the main and portal rule
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config_foreach iface_add iface
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config_foreach subnet_add subnet
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### Add interface independant prerouting rules
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iptables -t nat -A luci_splash_prerouting -j luci_splash_leases
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iptables -t nat -A luci_splash_leases -p udp --dport 53 -j REDIRECT --to-ports 53
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iptables -t nat -A luci_splash_leases -p tcp --dport 80 -j REDIRECT --to-ports 8082
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### Add interface independant forwarding rules
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iptables -t filter -A luci_splash_forwarding -j luci_splash_filter
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iptables -t filter -A luci_splash_filter -p tcp -j REJECT --reject-with tcp-reset
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iptables -t filter -A luci_splash_filter -j REJECT --reject-with icmp-net-prohibited
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### Add QoS chain
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[ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ] && {
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iptables -t mangle -N luci_splash_mark_out
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iptables -t mangle -N luci_splash_mark_in
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iptables -t mangle -I PREROUTING -j luci_splash_mark_out
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iptables -t mangle -I POSTROUTING -j luci_splash_mark_in
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}
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### Find active mac addresses
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MACS=""
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config_foreach mac_add lease
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config_foreach mac_add blacklist
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config_foreach mac_add whitelist
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### Add crontab entry
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test -f /etc/crontabs/root || touch /etc/crontabs/root
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grep -q luci-splash /etc/crontabs/root || {
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echo '*/5 * * * * /usr/sbin/luci-splash sync' >> /etc/crontabs/root
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}
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lock -u $LOCK
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### Populate iptables
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[ -n "$MACS" ] && luci-splash add-rules $MACS
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}
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stop() {
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lock -w $LOCK && lock $LOCK
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### Clear interface rules
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config_foreach iface_del iface
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silent iptables -t mangle -D PREROUTING -j luci_splash_mark_out
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silent iptables -t mangle -D POSTROUTING -j luci_splash_mark_in
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### Clear subchains
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silent iptables -t nat -F luci_splash_prerouting
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silent iptables -t nat -F luci_splash_leases
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silent iptables -t filter -F luci_splash_forwarding
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silent iptables -t filter -F luci_splash_filter
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silent iptables -t mangle -F luci_splash_mark_out
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silent iptables -t mangle -F luci_splash_mark_in
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### Delete subchains
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silent iptables -t nat -X luci_splash_prerouting
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silent iptables -t nat -X luci_splash_leases
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silent iptables -t filter -X luci_splash_forwarding
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silent iptables -t filter -X luci_splash_filter
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silent iptables -t mangle -X luci_splash_mark_out
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silent iptables -t mangle -X luci_splash_mark_in
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sed -ie '/\/usr\/sbin\/luci-splash sync/d' /var/spool/cron/crontabs/root
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lock -u $LOCK
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}
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clear_leases() {
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### Find active mac addresses
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MACS=""
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config_foreach mac_add lease
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### Clear leases
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[ -n "$MACS" ] && luci-splash remove $MACS
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}
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