add command line option for client

Signed-off-by: zhaojh329 <jianhuizhao329@gmail.com>

openwrt/files/xterminal.config

@@ -0,0 +1,3 @@
+config base
+  	option	mqtt_hostname	'jianhuizhao.f3322.net'
+  	option	mqtt_port		'8883'

openwrt/files/xterminal.init

@@ -5,9 +5,21 @@ START=99
 
 BIN=/usr/sbin/xterminal_device
 
+mqtt_hostname=
+mqtt_port=
+
+parse_conf() {
+	local cfg=$1
+	config_get mqtt_hostname "$cfg" "mqtt_hostname"
+	config_get mqtt_port "$cfg" "mqtt_port"
+}
+
 start_service() {
+	config_load xterminal
+	config_foreach parse_conf base
+
 	procd_open_instance
-	procd_set_param command $BIN br-lan
+	procd_set_param command $BIN br-lan "$mqtt_hostname:$mqtt_port"
 	procd_close_instance
 }
 

xterminal_device.lua

@@ -9,6 +9,8 @@ local loop = ev.Loop.default
 
 local mgr = evmg.init()
 local ifname = arg[1] or "eth0"
+local server = arg[2] or "localhost:1883"
+
 local devid = nil
 local session = {}
 
@@ -91,7 +93,7 @@ end
 
 print("devid:", devid)
 
-mgr:connect("localhost:1883", ev_handle)
+mgr:connect(server, ev_handle)
 
 ev.Signal.new(function(loop, sig, revents)
 	loop:unloop()