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#!/bin/sh
NL="
"
function ifaces_by_device() {
ubus call network.interface dump 2>/dev/null | \
jsonfilter -e "@.interface[@.device='$1' || @.l3_device='$1'].interface"
}
function device_by_addr() {
set -- $(ip route get "$1" ${2:+from "$2"} 2>/dev/null)
echo "$5"
}
for inbound_device in $(device_by_addr "$REMOTE_ADDR" "$SERVER_ADDR"); do
inbound_devices="$inbound_device"
inbound_interfaces=""
for iface in $(ifaces_by_device "$inbound_device"); do
inbound_interfaces="${inbound_interfaces:+$inbound_interfaces$NL}$iface"
for peeraddr in $(uci get "network.$iface.peeraddr"); do
for ipaddr in $(resolveip -t 1 "$peeraddr" 2>/dev/null); do
for peerdev in $(device_by_addr "$ipaddr"); do
for iface in $(ifaces_by_device "$peerdev"); do
inbound_devices="${inbound_devices:+$inbound_devices$NL}$peerdev"
inbound_interfaces="${inbound_interfaces:+$inbound_interfaces$NL}$iface"
done
done
done
done
done
done
inbound_devices="$(echo "$inbound_devices" | sort -u | sed ':a;N;$!ba;s/\n/", "/g')"
inbound_interfaces="$(echo "$inbound_interfaces" | sort -u | sed ':a;N;$!ba;s/\n/", "/g')"
cat <<JSON
{
"remote_addr": "$REMOTE_ADDR",
"server_addr": "$SERVER_ADDR",
"inbound_devices": [ ${inbound_devices:+\"$inbound_devices\"} ],
"inbound_interfaces": [ ${inbound_interfaces:+\"$inbound_interfaces\"} ]
}
JSON
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