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#!/bin/sh -e
. ../common.sh
# setup random ip
net=$( uci get cloud.cur.net_robinson)
net_fake=$(uci get cloud.cur.net_fake)
prefix=$(ipcalc.sh $net | grep ^PREFIX | cut -f2 -d=)
gen_randip () {
local r=$RANDOM
randip=$(
ipcalc.sh $net $((($r % 2**(24 - $prefix) - 1) * 2**8 + 1)) 1 \
| grep ^START | cut -f2 -d=
)
}
gen_randip
while ! arping -I br-mesh -D -c 5 -q $randip; do
gen_randip
done
mesh_add_ipv4 $randip 255.0.0.0
# setup dhcp, start fake DNS
echo "
set dhcp.mesh=dhcp
set dhcp.mesh.start=3
set dhcp.mesh.limit=254
set dhcp.mesh.leasetime=60
set dhcp.mesh.interface=mesh
set dhcp.fakedns=domain
set dhcp.fakedns.ip=$(ipcalc.sh $net_fake 1 0 | grep ^START | cut -f2 -d=)
set dhcp.fakedns.name='#'
" | uci batch
/etc/init.d/dnsmasq restart
# disable batman-adv-mangling with DHCP packets
batctl gw off
# start redirection httpd, add robinson IP to service httpd
echo "http://$randip/robinson.html" > /tmp/redirection_target
enable_httpd redirection $randip:81
change_service_httpd_listen $randip:80
/etc/init.d/uhttpd restart
# redirect all tcp traffic to local httpd, all dns traffic to local NS
iptables -t nat -F prerouting_robinson_fake
iptables -t nat -F prerouting_robinson_inet
iptables -t nat -A prerouting_robinson_inet -p tcp \
-j DNAT --to-destination $randip:81
iptables -t nat -A prerouting_robinson_inet -p udp --dport 53 \
-j DNAT --to-destination $randip:53
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