Import package 'batman-adv-auto-gw-mode' from altermesh-packages

packages/batman-adv-auto-gw-mode/Makefile

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+# 
+# Copyright (C) 2012 Gui Iribarren
+#
+# This is free software, licensed under the GNU General Public License v3.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=batman-adv-auto-gw-mode
+PKG_VERSION:=$(shell hg log --template "{date|shortdate}-{rev}\n" -l 1 .)
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/batman-adv-auto-gw-mode
+  SECTION:=net
+  CATEGORY:=Network
+  SUBMENU:=Routing and Redirection
+  TITLE:=Changes batman-adv gw_mode to reflect internet availability
+  MAINTAINER:=Gui Iribarren <gui@altermundi.net>
+  DEPENDS:= \
+	+kmod-batman-adv \
+	+watchping \
+	+netifd \
+	+ubus \
+
+endef
+
+define Package/batman-adv-auto-gw-mode/description
+Adds watchping hooks that set 
+gw_mode=server when WAN port gets internet access
+gw_mode=client when connection is severed
+
+Also adds a hotplug.d hook that sends a DHCP request
+when another batman-adv router announces itself
+as a gw_mode=server.
+
+So if you install this package on every node of a batman-adv
+mesh network, you can connect internet access to the WAN
+port of any (one or more) nodes, it will be autodetected
+and the rest of the nodes will route through it (or them)
+endef
+
+define Build/Compile
+endef
+
+define Package/batman-adv-auto-gw-mode/install
+	$(INSTALL_DIR) $(1)/
+	$(CP) ./files/* $(1)/
+endef
+
+$(eval $(call BuildPackage,batman-adv-auto-gw-mode))

packages/batman-adv-auto-gw-mode/files/etc/hotplug.d/net/99-batman-gw

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+#!/bin/sh
+
+dhcp4_discover () {
+	ifup lan_dhcp
+	ifup lan_dhcpv6
+}
+
+dhcp4_kill () {
+	ifdown lan_dhcp
+	ifdown lan_dhcpv6
+}
+
+dnsmasq_start () {
+	uci revert -P/var/state dhcp.@dnsmasq[0].domainneeded
+	uci revert -P/var/state dhcp.@dnsmasq[0].boguspriv
+	uci revert -P/var/state dhcp.@dnsmasq[0].rebind_protection
+	uci revert -P/var/state dhcp.lan.ignore
+	/etc/init.d/dnsmasq restart
+}
+
+dnsmasq_stop () {
+	uci set -P/var/state dhcp.@dnsmasq[0].domainneeded=
+	uci set -P/var/state dhcp.@dnsmasq[0].boguspriv=
+	uci set -P/var/state dhcp.@dnsmasq[0].rebind_protection=0
+	uci set -P/var/state dhcp.lan.ignore=1
+	echo no-dhcp-interface=br-lan >> /var/etc/dnsmasq.conf
+	/etc/init.d/dnsmasq restart
+}
+
+if [ "$BATTYPE" = "gw" ] ; then
+	case "$BATACTION" in
+		add) dnsmasq_stop ; dhcp4_discover ;;
+		del) dhcp4_kill ; dnsmasq_start ;;
+		change) dhcp4_kill ; sleep 5 ; dhcp4_discover ;;
+	esac
+fi

packages/batman-adv-auto-gw-mode/files/etc/uci-defaults/network_add_lan_dhcp

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+#!/bin/sh
+
+uci batch <<EOF
+set network.lan_dhcp=interface
+set network.lan_dhcp.ifname=@lan
+set network.lan_dhcp.proto=dhcp
+set network.lan_dhcp.auto=0
+
+set network.lan_dhcpv6=interface
+set network.lan_dhcpv6.ifname=@lan
+set network.lan_dhcpv6.proto=dhcpv6
+set network.lan_dhcpv6.auto=0
+commit network
+EOF

packages/batman-adv-auto-gw-mode/files/etc/watchping/wan-fail.d/batman-gw

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+#!/bin/sh
+
+# batman-adv gateway handling (DHCP mangling)
+[ "$(uci -q get batman-adv.bat0.gw_mode)" == "client" ] || exit 0
+if grep -q "^=>" /sys/kernel/debug/batman_adv/bat0/gateways ; then
+  BATTYPE=gw BATACTION=add /etc/hotplug.d/net/99-batman-gw
+fi
+batctl gw_mode client

packages/batman-adv-auto-gw-mode/files/etc/watchping/wan-ok.d/batman-gw

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+#!/bin/sh
+
+# batman-adv gateway handling (DHCP mangling)
+[ "$(uci -q get batman-adv.bat0.gw_mode)" == "client" ] || exit 0
+if grep -q "^=>" /sys/kernel/debug/batman_adv/bat0/gateways ; then
+  BATTYPE=gw BATACTION=del /etc/hotplug.d/net/99-batman-gw
+fi
+batctl gw_mode server