#
# Copyright (c) 2022-2023, Jesús Daniel Colmenares Oviedo <DtxdF@disroot.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# * Neither the name of the copyright holder nor the names of its
#   contributors may be used to endorse or promote products derived from
#   this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

lib_network_ifaces()
{
	local jail_name="$1"

	if [ -n "${jail_name}" ]; then
		jexec -l "${jail_name}" ifconfig
	else
		ifconfig
	fi | grep -E '^.+: flags=' | sed -Ee 's/^(.+): flags=.+/\1/'
}

lib_network_ifacesgrp()
{
	local grp="$1"

	if [ -z "${grp}" ]; then
		lib_err ${EX_USAGE} "usage: lib_network_ifacesgrp group"
	fi

	ifconfig -g "${grp}"
}

lib_network_getbrgmembers()
{
	local bridge="$1"

	if [ -z "${bridge}" ]; then
		lib_err ${EX_USAGE} "usage: lib_network_getbrgmembers bridge"
	fi

	ifconfig -- "${bridge}" | grep -Eo 'member: .+ flags=' | sed -Ee 's/member: (.+) flags=/\1/'
}

lib_network_addrlist()
{
	local networkaddr="$1"
	local cidr="$2"

	if [ -z "${networkaddr}" -o -z "${cidr}" ]; then
		lib_err ${EX_USAGE} "usage: lib_network_addrlist networkaddr cidr"
	fi

	"${UTILDIR}/network/network" -l -a "${networkaddr}" -n "${cidr}"
}

lib_network_getservbyname()
{
	local name="$1"
	local proto="$2"

	if [ -z "${name}" -o -z "${proto}" ]; then
		lib_err ${EX_USAGE} "usage: lib_network_getservbyname name proto"
	fi

	"${UTILDIR}/getservbyname/getservbyname" "${name}" "${proto}"
}

lib_network_getmtu()
{
	local iface="$1"
	if [ -z "${iface}" ]; then
		lib_err ${EX_USAGE} "usage: lib_network_getmtu iface"
	fi

	mtu=`ifconfig -- "${iface}" | grep -Eo 'mtu [0-9]+' | cut -d' ' -f2`

	if lib_check_empty "${mtu}" || ! lib_check_number "${mtu}"; then
		lib_err ${EX_SOFTWARE} -- "${iface}: Could not get MTU."
	fi

	echo "${mtu}"
}
