#!/bin/sh -f

wait_time=3
alterator_api_version=1

. alterator-sh-functions
. alterator-net-functions
. alterator-hw-functions

### shell file helpers

read_connection()
{
	local name="/etc/net/ifaces/$1"

	local info=
	netdev_is_up "$1" && info="`_ "connection established"`" || info="`_ "connection failed"`"
	write_string_param info "$info"

	local iface="$(read_iface_option "$name" HOST)"
	[ -n "$iface" ] || iface="$(list_eth|head -n1)"

	write_string_param iface "$iface"
	write_string_param login "$(read_ppp_option "$name" user)"

	write_bool_param 'mppe' "$(read_ppp_option1 "$name" 'require-mppe' 'nomppe')"
}

write_connection()
{
	[ "$1" = "/" ] && return
	local name="/etc/net/ifaces/$1"

	[ -d "$name" ] || mkdir -- "$name"

	[ -n "$in_iface" ] && write_iface_option "$name" HOST "$in_iface"
	
	[ -n "$in_login" ] && write_ppp_option "$name" user "$in_login"
	[ -n "$in_password" ] && write_ppp_option "$name" password "$(echo "$in_password"|sed -e 's/["]/\\\\&/g')"

	test_bool "$in_mppe"
	write_ppp_option1 "$name" 'require-mppe' 'nomppe' "$?"
}

new_connection()
{
    local name="/etc/net/ifaces/$1"

    mkdir -p -- "$name"

    write_iface_option "$name" TYPE ppp
    write_iface_option "$name" ONBOOT yes
    write_iface_option "$name" PPPTYPE pppoe
    write_iface_option "$name" PPPPERSIST on
    write_iface_option "$name" PPPMAXFAIL 0

# https://bugzilla.altlinux.org/show_bug.cgi?id=15603
    cat>"$name/pppoptions"<<EOF
defaultroute
mtu 1476
usepeerdns
EOF
    chmod o-rw "$name/pppoptions" # deny others reading the password
}

delete_connection()
{
	[ "$1" = "/" ] && return
	local name="/etc/net/ifaces/$1"

	iface_down "$1"
	rm -rf -- "$name"
}

iface_up_priv()
{
    local iface="$1";shift
    local n="${1:-0}";shift

    env -i PATH="$PATH" HOME="$HOME" TMPDIR="$TMPDIR" /usr/bin/setsid /sbin/ifup "$iface" >/dev/null
    for i in $(seq 0 "$n"); do
        netdev_is_up "$iface" && return 0
        [ "$i" != "$n" ] || sleep 1
    done
    return 1
}

on_message()
{
	case "$in_action" in
		type)
			write_type_item name		iface-name
			write_type_item new_name	iface-name
		;;
		list)
			case "$in__objects" in
			    avail_connection)
				list_ppp 'pppoe'|write_enum
				;;
			    avail_iface)
				list_eth|write_enum
				;;
			    avail_state)
				write_enum_item "ignore" "`_ "don't change"`" #'
				write_enum_item "start" "`_ "start"`"
				write_enum_item "stop" "`_ "stop"`"
				write_enum_item "restart" "`_ "restart"`"
				;;
			esac
			;;
		read)
			local name="$in_name"
			[ -n "$in_new" ] && name="$in_new_name"
			[ -n "$name" ] || name="$(list_ppp 'pppoe'|head -n1)"

			write_string_param new_name "$(next_ppp)"
			write_string_param name "$name"
			write_string_param status "ignore"
			[ -n "$name" ] && read_connection "$name"
			;;
		write)
			if [ -n "$in_new" -a -n "$in_new_name" ];then
			    new_connection "$in_new_name"
			elif [ -n "$in_delete" -a -n "$in_name" ];then
			    delete_connection "$in_name"
			elif [ -n "$in_commit" -a -n "$in_name" ];then
			    write_connection "$in_name"
			    case "$in_status" in
				start) iface_up_priv "$in_name" "$wait_time"  ;;
				stop) iface_down "$in_name" "$wait_time" ;;
				restart)
				    iface_down "$in_name" "$wait_time"
				    iface_up "$in_name" "$wait_time"
				    ;;
			    esac
			fi
			;;
	esac
}

message_loop
