1 files changed, 399 insertions, 0 deletions
diff --git a/scripts/netifd-proto.sh b/scripts/netifd-proto.sh
new file mode 100755
index 0000000..6f20de9
--- /dev/null
+++ b/scripts/netifd-proto.sh
@@ -0,0 +1,399 @@
+. /usr/share/libubox/jshn.sh
+
+append() {
+	local var="$1"
+	local value="$2"
+	local sep="${3:- }"
+
+	eval "export -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+}
+
+proto_config_add_generic() {
+	json_add_array ""
+	json_add_string "" "$1"
+	json_add_int "" "$2"
+	json_close_array
+}
+
+proto_config_add_int() {
+	proto_config_add_generic "$1" 5
+}
+
+proto_config_add_string() {
+	proto_config_add_generic "$1" 3
+}
+
+proto_config_add_boolean() {
+	proto_config_add_generic "$1" 7
+}
+
+add_default_handler() {
+	case "$(type $1 2>/dev/null)" in
+		*function*) return;;
+		*) eval "$1() { return; }"
+	esac
+}
+
+_proto_do_teardown() {
+	json_load "$data"
+	eval "proto_$1_teardown \"$interface\" \"$ifname\""
+}
+
+_proto_do_setup() {
+	json_load "$data"
+	_EXPORT_VAR=0
+	_EXPORT_VARS=
+	eval "proto_$1_setup \"$interface\" \"$ifname\""
+}
+
+proto_init_update() {
+	local ifname="$1"
+	local up="$2"
+	local external="$3"
+
+	PROTO_KEEP=0
+	PROTO_INIT=1
+	PROTO_TUNNEL_OPEN=
+	PROTO_IPADDR=
+	PROTO_IP6ADDR=
+	PROTO_ROUTE=
+	PROTO_ROUTE6=
+	PROTO_PREFIX6=
+	PROTO_DNS=
+	PROTO_DNS_SEARCH=
+	json_init
+	json_add_int action 0
+	[ -n "$ifname" -a "*" != "$ifname" ] && json_add_string "ifname" "$ifname"
+	json_add_boolean "link-up" "$up"
+	[ -n "$3" ] && json_add_boolean "address-external" "$external"
+}
+
+proto_set_keep() {
+	PROTO_KEEP="$1"
+}
+
+proto_close_nested() {
+	[ -n "$PROTO_NESTED_OPEN" ] && json_close_object
+	PROTO_NESTED_OPEN=
+}
+
+proto_add_nested() {
+	PROTO_NESTED_OPEN=1
+	json_add_object "$1"
+}
+
+proto_add_tunnel() {
+	proto_add_nested "tunnel"
+}
+
+proto_close_tunnel() {
+	proto_close_nested
+}
+
+proto_add_data() {
+	proto_add_nested "data"
+}
+
+proto_close_data() {
+	proto_close_nested
+}
+
+proto_add_dns_server() {
+	local address="$1"
+
+	append PROTO_DNS "$address"
+}
+
+proto_add_dns_search() {
+	local address="$1"
+
+	append PROTO_DNS_SEARCH "$address"
+}
+
+proto_add_ipv4_address() {
+	local address="$1"
+	local mask="$2"
+	local broadcast="$3"
+	local ptp="$4"
+
+	append PROTO_IPADDR "$address/$mask/$broadcast/$ptp"
+}
+
+proto_add_ipv6_address() {
+	local address="$1"
+	local mask="$2"
+	local preferred="$3"
+	local valid="$4"
+	local offlink="$5"
+
+	append PROTO_IP6ADDR "$address/$mask/$preferred/$valid/$offlink"
+}
+
+proto_add_ipv4_route() {
+	local target="$1"
+	local mask="$2"
+	local gw="$3"
+
+	append PROTO_ROUTE "$target/$mask/$gw//"
+}
+
+proto_add_ipv6_route() {
+	local target="$1"
+	local mask="$2"
+	local gw="$3"
+	local metric="$4"
+	local valid="$5"
+	local source="$6"
+
+	append PROTO_ROUTE6 "$target/$mask/$gw/$metric/$valid/$source"
+}
+
+proto_add_ipv6_prefix() {
+	local prefix="$1"
+	local valid="$2"
+	local preferred="$3"
+
+	if [ -z "$valid" ]; then
+		append PROTO_PREFIX6 "$prefix"
+	else
+		[ -z "$preferred" ] && preferred="$valid"
+		append PROTO_PREFIX6 "$prefix,$valid,$preferred"
+	fi
+}
+
+_proto_push_ipv4_addr() {
+	local str="$1"
+	local address mask broadcast ptp
+
+	address="${str%%/*}"
+	str="${str#*/}"
+	mask="${str%%/*}"
+	str="${str#*/}"
+	broadcast="${str%%/*}"
+	str="${str#*/}"
+	ptp="$str"
+
+	json_add_object ""
+	json_add_string ipaddr "$address"
+	[ -n "$mask" ] && json_add_string mask "$mask"
+	[ -n "$broadcast" ] && json_add_string broadcast "$broadcast"
+	[ -n "$ptp" ] && json_add_string ptp "$ptp"
+	json_close_object
+}
+
+_proto_push_ipv6_addr() {
+	local str="$1"
+	local address mask preferred valid offlink
+
+	address="${str%%/*}"
+	str="${str#*/}"
+	mask="${str%%/*}"
+	str="${str#*/}"
+	preferred="${str%%/*}"
+	str="${str#*/}"
+	valid="${str%%/*}"
+	str="${str#*/}"
+	offlink="${str%%/*}"
+
+	json_add_object ""
+	json_add_string ipaddr "$address"
+	[ -n "$mask" ] && json_add_string mask "$mask"
+	[ -n "$preferred" ] && json_add_int preferred "$preferred"
+	[ -n "$valid" ] && json_add_int valid "$valid"
+	[ -n "$offlink" ] && json_add_boolean offlink "$offlink"
+	json_close_object
+}
+
+_proto_push_string() {
+	json_add_string "" "$1"
+}
+
+_proto_push_route() {
+	local str="$1";
+	local target="${str%%/*}"
+	str="${str#*/}"
+	local mask="${str%%/*}"
+	str="${str#*/}"
+	local gw="${str%%/*}"
+	str="${str#*/}"
+	local metric="${str%%/*}"
+	str="${str#*/}"
+	local valid="${str%%/*}"
+	str="${str#*/}"
+	local source="${str}"
+
+	json_add_object ""
+	json_add_string target "$target"
+	json_add_string netmask "$mask"
+	[ -n "$gw" ] && json_add_string gateway "$gw"
+	[ -n "$metric" ] && json_add_int metric "$metric"
+	[ -n "$valid" ] && json_add_int valid "$valid"
+	[ -n "$source" ] && json_add_string source "$source"
+	json_close_object
+}
+
+_proto_push_array() {
+	local name="$1"
+	local val="$2"
+	local cb="$3"
+
+	[ -n "$val" ] || return 0
+	json_add_array "$name"
+	for item in $val; do
+		eval "$cb \"\$item\""
+	done
+	json_close_array
+}
+
+_proto_notify() {
+	local interface="$1"
+	local options="$2"
+	json_add_string "interface" "$interface"
+	ubus $options call network.interface notify_proto "$(json_dump)"
+}
+
+proto_send_update() {
+	local interface="$1"
+
+	proto_close_nested
+	json_add_boolean keep "$PROTO_KEEP"
+	_proto_push_array "ipaddr" "$PROTO_IPADDR" _proto_push_ipv4_addr
+	_proto_push_array "ip6addr" "$PROTO_IP6ADDR" _proto_push_ipv6_addr
+	_proto_push_array "routes" "$PROTO_ROUTE" _proto_push_route
+	_proto_push_array "routes6" "$PROTO_ROUTE6" _proto_push_route
+	_proto_push_array "ip6prefix" "$PROTO_PREFIX6" _proto_push_string
+	_proto_push_array "dns" "$PROTO_DNS" _proto_push_string
+	_proto_push_array "dns_search" "$PROTO_DNS_SEARCH" _proto_push_string
+	_proto_notify "$interface"
+}
+
+proto_export() {
+	local var="VAR${_EXPORT_VAR}"
+	_EXPORT_VAR="$(($_EXPORT_VAR + 1))"
+	export -- "$var=$1"
+	append _EXPORT_VARS "$var"
+}
+
+proto_run_command() {
+	local interface="$1"; shift
+
+	json_init
+	json_add_int action 1
+	json_add_array command
+	while [ $# -gt 0 ]; do
+		json_add_string "" "$1"
+		shift
+	done
+	json_close_array
+	[ -n "$_EXPORT_VARS" ] && {
+		json_add_array env
+		for var in $_EXPORT_VARS; do
+			eval "json_add_string \"\" \"\${$var}\""
+		done
+		json_close_array
+	}
+	_proto_notify "$interface"
+}
+
+proto_kill_command() {
+	local interface="$1"; shift
+
+	json_init
+	json_add_int action 2
+	[ -n "$1" ] && json_add_int signal "$1"
+	_proto_notify "$interface"
+}
+
+proto_notify_error() {
+	local interface="$1"; shift
+
+	json_init
+	json_add_int action 3
+	json_add_array error
+	while [ $# -gt 0 ]; do
+		json_add_string "" "$1"
+		shift
+	done
+	json_close_array
+	_proto_notify "$interface"
+}
+
+proto_block_restart() {
+	local interface="$1"; shift
+
+	json_init
+	json_add_int action 4
+	_proto_notify "$interface"
+}
+
+proto_set_available() {
+	local interface="$1"
+	local state="$2"
+	json_init
+	json_add_int action 5
+	json_add_boolean available "$state"
+	_proto_notify "$interface"
+}
+
+proto_add_host_dependency() {
+	local interface="$1"
+	local host="$2"
+	local ifname="$3"
+
+	# execute in subshell to not taint callers env
+	# see tickets #11046, #11545, #11570
+	(
+		json_init
+		json_add_int action 6
+		json_add_string host "$host"
+		[ -n "$ifname" ] && json_add_string ifname "$ifname"
+		_proto_notify "$interface" -S
+	)
+}
+
+proto_setup_failed() {
+	local interface="$1"
+	json_init
+	json_add_int action 7
+	_proto_notify "$interface"
+}
+
+init_proto() {
+	proto="$1"; shift
+	cmd="$1"; shift
+
+	case "$cmd" in
+		dump)
+			add_protocol() {
+				no_device=0
+				available=0
+
+				add_default_handler "proto_$1_init_config"
+
+				json_init
+				json_add_string "name" "$1"
+				json_add_array "config"
+				eval "proto_$1_init_config"
+				json_close_array
+				json_add_boolean no-device "$no_device"
+				json_add_boolean available "$available"
+				json_dump
+			}
+		;;
+		setup|teardown)
+			interface="$1"; shift
+			data="$1"; shift
+			ifname="$1"; shift
+
+			add_protocol() {
+				[[ "$proto" == "$1" ]] || return 0
+
+				case "$cmd" in
+					setup) _proto_do_setup "$1";;
+					teardown) _proto_do_teardown "$1" ;;
+					*) return 1 ;;
+				esac
+			}
+		;;
+	esac
+}