fff-autoconfig: Add IPv6 support

With this script, IPv6 can configurate automaticaly

Signed-off-by: Christian Dresel <freifunk@dresel.systems>

src/packages/fff/fff-autoconfig/files/usr/lib/autol3.d/10-ipv6.sh

@@ -0,0 +1,64 @@
+#!/bin/sh
+
+# first check is fff.autol3.ipv6 enabled
+if [ -z $(uci -q get fff.autol3.ipv6) ] ; then
+	exit;
+fi
+
+. /usr/share/libubox/jshn.sh
+
+MACADDR=$(cat /sys/class/net/br-client/address | /bin/sed 's/://g')
+MQTTSERVER=$(uci -q get fff.mqtt.server)
+ASSIGNEROWN=$(uci -q get fff.autol3.ipv6assigner)
+IPOWN=$(uci -q get fff.autol3.ipv6address)
+
+asknew() {
+	# Load Blocklist
+	ipv6assignerblock=$(uci get fff.autol3.ipv6assignerblock)
+	for ipv6assignerblock in $ipv6assignerblock; do
+	        block="$block -T  /ipv6/usethis/+/$ipv6assignerblock"  
+	done 
+	echo $block
+        mosquitto_pub -h $MQTTSERVER -p 1883 -t '/ipv6/asknew' -m "$MACADDR" 
+        # use the first income message
+        # cancel after 5 second, after this time we don't get any IP address
+        autol3config=$(mosquitto_sub -h $MQTTSERVER -p 1883 -t '/ipv6/usethis/#' -C 1 $block)
+        if [ -z "$autol3config" ] ; then
+                echo "No IP get"
+                exit 1;
+        fi
+        json_load "$autol3config"
+        json_get_var assigner assigner
+        json_get_var ip ip
+        uci set fff.autol3.ipv6address=$ip
+        uci set fff.autol3.ipv6assigner=$assigner
+        uci commit fff
+        uci del gateway.@client[0].ip6addr
+        uci add_list gateway.@client[0].ip6addr=$ip
+        uci commit gateway
+        yes | configure-layer3 -c
+        configure-layer3 -a
+        exit;
+}
+
+canusethis() {
+        mosquitto_pub -h $MQTTSERVER -p 1883 -t /ipv6/canusethis/$ASSIGNEROWN -m "{ \"mac\":\"$MACADDR\", \"ip\":\"$IPOWN\" }"
+        canusethisanswer=$(mosquitto_sub -h $MQTTSERVER -p 1883 -t /ipv6/canusethisanswer/$MACADDR -C 1 -W 5)
+        # check if we get answer, if no load asknew again and get new ip address
+        if [ -z $canusethisanswer ] ; then
+		uci del fff.autol3.ipv6address
+		uci del fff.autol3.ipv6assigner
+                uci commit fff
+		uci del gateway.@client[0].ip6addr
+		uci commit gateway
+                asknew
+        fi
+}
+
+if [ -n $(uci -q get fff.autol3) ] && [ -z $(uci -q get fff.autol3.ipv6address) ] ; then
+        asknew
+fi
+
+if [ -n $(uci -q get fff.autol3.ipv6address) ] ; then
+        canusethis
+fi