dawn: bump to latest version

Includes:
- dawn_uci: fix crashing when uci config is received
- tcpsocket: add option to add server ip

A new config option allows to add a server ip
	option server_ip '10.0.0.2'

However, this server does not send anything back. Therefore it is not
possible to change the node configuration. This will probably be added
soon. The main goal of this commit is to allow monitoring of all nodes
in a network with DAWN, e.g. clients, channel utilization, ...

Also a network option (3) has been added which allows to use TCP but
not to announce your daemon in the broadcast domain. This allows you to
create a monitor-only node that holds only the local information and
forwards it to the central server.

A monitor-only node could be configured like
	option server_ip '10.0.0.1'
	option tcp_port '1026'
	option network_option '3'

Another possible config is
        option server_ip '10.0.0.1'
        option tcp_port '1026'
        option network_option '2'
Here, the node shares information with a central server, which can be
located outside the broadcast domain. Nevertheless, it also shares
information within its broadcast domain and can therefore perform
client steering.

Signed-off-by: Nick Hainke <vincent@systemli.org>

net/dawn/Makefile

@@ -5,13 +5,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dawn
-PKG_SOURCE_DATE:=2020-08-07
+PKG_SOURCE_DATE:=2020-08-21
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/berlin-open-wireless-lab/DAWN.git
-PKG_SOURCE_VERSION:=50d54a625366cffd48f0ec3f23456d5a04c45fd3
-PKG_MIRROR_HASH:=cdea4f6ff0209afa0320e143043e0417fd6d65c349651e491f6023affd39fa10
+PKG_SOURCE_VERSION:=25a493c4384e00027cc0f38465ea19d2555b036e
+PKG_MIRROR_HASH:=2f959d5ad60d14224c1dc1bb77fe998cc909c69480dc444c89a7071dc5c8dbea
 
 PKG_MAINTAINER:=Nick Hainke <vincent@systemli.org>
 PKG_LICENSE:=GPL-2.0-only

net/dawn/files/dawn.config

@@ -1,6 +1,7 @@
 config network
     option broadcast_ip         '10.0.0.255'
     option broadcast_port       '1025'
+    option server_ip            ''
     option tcp_port             '1026'
     option network_option       '2' # 0 udp broadcast, 1 multicast, 2 tcp
     option shared_key           'Niiiiiiiiiiiiiik'

net/dawn/files/dawn.init

@@ -38,11 +38,14 @@ service_triggers()
 start_service()
 {
 	local _tcp_buffer
+	local _network_option
+
 	config_load dawn
-	load_tcp_port() {
+	load_tcp_config() {
 		config_get _tcp_buffer "$1" tcp_port
+		config_get _network_option "$1" network_option
 	}
-	config_foreach load_tcp_port network
+	config_foreach load_tcp_config network
 
 	touch /tmp/dawn_mac_list
 
@@ -51,9 +54,11 @@ start_service()
 	procd_set_param command $PROG
 	procd_set_param stdout 0 # here it is possible to remove the debug output...
 	procd_set_param stderr 1
-	procd_add_mdns "dawn" "tcp" "${_tcp_buffer}"
+	if [ ${_network_option} -eq 2 ]; then
+		procd_add_mdns "dawn" "tcp" "${_tcp_buffer}"
+		echo "UMDNS with port ${_tcp_buffer}"
+	fi
 	procd_close_instance
   	echo "Dawn instance started!"
-  	echo "UMDNS with port ${_tcp_buffer}"
 }