device-observatory: add new package

Shows network/wireless activity on a local website
to increase awareness for privacy and security matters.

Signed-off-by: Moritz Warning <moritzwarning@web.de>

utils/device-observatory/files/etc/config/device-observatory

@@ -0,0 +1,26 @@
+
+config setup
+	list dev 'wlan0'
+	list mdev 'mon0'
+
+	option mac_db '/usr/share/device-observatory/macdb.txt'
+	option port_db '/etc/services'
+
+	# Optional JSON output into file
+#	option json_output '/tmp/device-observatory.json'
+
+	# Time after which a device is removed from the record
+	option device_timeout 3600
+
+	# Create monitoring interface mon0 based on physical interface wifi phy0.
+	# See 'iw dev' output for a list of interfaces.
+	list create_monitor 'mon0'
+
+	# Track router itself as device
+	option track_localhost 0
+
+	# Set to 0 to disable webserver
+	option webserver_port 8080
+
+	# Not needed, all necessary files are included
+#	option webserver_path '/www'

utils/device-observatory/files/etc/init.d/device-observatory

@@ -0,0 +1,66 @@
+#!/bin/sh /etc/rc.common
+
+START=90
+USE_PROCD=1
+PROG=/usr/bin/device-observatory
+OPTS=""
+
+
+boot() {
+	local dev="$(uci get -q device-observatory.@setup[0].dev | cut -d ' ' -f 1)"
+
+	# Wait for interface to be up
+	ubus -t 15 wait_for network.interface network.${dev:-localhost} 2>/dev/null
+	rc_procd start_service
+}
+
+xappend() {
+	local name="$2" value="$1"
+	OPTS="$OPTS --${name//_/-} ${value//'/\\'}"
+}
+
+append_opts() {
+	local name value cfg="$1"; shift
+	for name in $*; do
+		config_get value "$cfg" "$name"
+		[ -n "$value" ] && xappend "$value" "$name"
+	done
+}
+
+append_opts_list() {
+	local name cfg="$1"; shift
+	for name in $*; do
+		config_list_foreach "$cfg" "$name" xappend "$name"
+	done
+}
+
+create_monitor_interface() {
+	local ifce="$1" n=$(echo -n "$1" | tail -c 1)
+
+	if [ ! -d "/sys/class/net/$ifce/" ]; then
+		iw phy "phy$n" interface add "$ifce" type monitor
+		ip link set dev "$ifce" up
+	fi
+}
+
+start_instance() {
+	local cfg="$1"
+
+	OPTS=""
+
+	config_list_foreach "$cfg" "create_monitor" create_monitor_interface "create_monitor"
+
+	append_opts_list "$cfg" dev mdev
+	append_opts "$cfg" mac_db port_db json_output device_timeout webserver_port webserver_path track_localhost
+
+	procd_open_instance
+	procd_set_param command $PROG $OPTS
+	procd_set_param stderr 1
+	procd_set_param stdout 0
+	procd_close_instance
+}
+
+start_service() {
+	config_load 'device-observatory'
+	config_foreach start_instance 'setup'
+}