uradvd: add new package

Send IPv6 router advertisments.

Signed-off-by: Moritz Warning <moritzwarning@web.de>
Co-authored-by: Matthias Schiffer <mschiffer@universe-factory.net>

diff --git a/net/uradvd/Makefile b/net/uradvd/Makefile
new file mode 100644 (file)
index 0000000..0d65447
--- /dev/null
+++ b/net/uradvd/Makefile
@@ -0,0 +1,37 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=uradvd
+PKG_RELEASE:=1
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL=https://github.com/freifunk-gluon/uradvd.git
+PKG_SOURCE_DATE:=2021-09-14
+PKG_SOURCE_VERSION:=9b0da60e27c67305d251b10163e388191d566d7a
+PKG_MIRROR_HASH=c3c9cb5d3a7b30503bff64541bbcaffa84b33e0de39560a5efae077df4e9b134
+
+PKG_MAINTAINER:=Moritz Warning <moritzwarning@web.de>
+PKG_LICENSE:=BSD-2-Clause
+PKG_LICENSE_FILES:=LICENSE
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/uradvd
+  SECTION:=net
+  CATEGORY:=Network
+  TITLE:=A tiny radvd
+endef
+
+define Package/uradvd/description
+        Advertise an IPv6 prefix/route via SLAAC.
+endef
+
+define Package/uradvd/install
+       $(INSTALL_DIR) $(1)/etc/config/
+       $(INSTALL_DATA) ./files/uradvd.config $(1)/etc/config/
+       $(INSTALL_DIR) $(1)/etc/init.d/
+       $(INSTALL_BIN) ./files/uradvd.init $(1)/etc/init.d/
+       $(INSTALL_DIR) $(1)/usr/sbin
+       $(INSTALL_BIN) $(PKG_BUILD_DIR)/uradvd $(1)/usr/sbin/
+endef
+
+$(eval $(call BuildPackage,uradvd))

diff --git a/net/uradvd/files/uradvd.config b/net/uradvd/files/uradvd.config
new file mode 100644 (file)
index 0000000..aa5486d
--- /dev/null
+++ b/net/uradvd/files/uradvd.config
@@ -0,0 +1,11 @@
+
+config interface
+       option enabled '0'
+       # send router advertisment over this device
+       # alternative: option device 'lan'
+       option ifname 'br-lan'
+       # lifetime of the default route (in seconds)
+       option default_lifetime '0'
+       list prefix_on_link '300::/64'
+       list prefix_off_link '200::/64'
+       list dns '2001:4860:4860::8888'

diff --git a/net/uradvd/files/uradvd.init b/net/uradvd/files/uradvd.init
new file mode 100755 (executable)
index 0000000..a80b6ed
--- /dev/null
+++ b/net/uradvd/files/uradvd.init
@@ -0,0 +1,72 @@
+#!/bin/sh /etc/rc.common
+
+START=50
+USE_PROCD=1
+ARGS=""
+
+append_prefix_off_link() {
+       ARGS="$ARGS -a $1"
+}
+
+append_prefix_on_link() {
+       ARGS="$ARGS -p $1"
+}
+
+append_dns() {
+       ARGS="$ARGS --rdnss $1"
+}
+
+start_instance() {
+       local cfg="$1" enabled device ifname default_lifetime
+
+       ARGS=""
+
+       config_get_bool enabled $cfg 'enabled' 1
+       config_get device $cfg 'device'
+       config_get ifname $cfg 'ifname'
+       config_get default_lifetime $cfg 'default_lifetime'
+
+       if [ "$enabled" != "1" ]; then
+               exit 0
+       fi
+
+       if [ -n "$device" ] && [ -n "$ifname" ]; then
+               echo "either set device or ifname" >&2
+               exit 1
+       fi
+
+       if [ -z "$device" ] && [ -z "$ifname" ]; then
+               echo "either set device or ifname" >&2
+               exit 1
+       fi
+
+       if [ -z "$ifname" ]; then
+               network_get_device 'ifname' "$ifname"
+       fi
+
+       if [ -z "$ifname" ]; then
+               echo "no valid device or ifname set" >&2
+               exit 1
+       fi
+
+       if [ -n "$default_lifetime" ]; then
+               ARGS="$ARGS --default-lifetime $default_lifetime"
+       fi
+
+       ARGS="$ARGS -i $ifname"
+
+
+       config_list_foreach $cfg 'prefix_off_link' append_prefix_off_link
+       config_list_foreach $cfg 'prefix_on_link' append_prefix_on_link
+       config_list_foreach $cfg "dns" append_dns
+
+       procd_open_instance
+       procd_set_param command /usr/sbin/uradvd $ARGS
+       procd_set_param respawn
+       procd_close_instance
+}
+
+start_service() {
+       config_load uradvd
+       config_foreach start_instance interface
+}