PK

#!/usr/bin/env bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2021, OpenNebula Project, OpenNebula Systems                #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

# shellcheck disable=SC1091,SC1090

. /etc/one-context.d/loc-10-network.d/functions

context_type="$1"
action="$2"
os_id=$(detect_os)

if [ -z "${action}" ] ; then
    action="configure"
fi

if [ -z "${NETCFG_TYPE}" ] ; then
    case "${os_id}" in
        alpine)
            NETCFG_TYPE='interfaces'
            ;;
        altlinux)
            NETCFG_TYPE='networkd nm'
            ;;
        debian|devuan|ubuntu)
            NETCFG_TYPE='interfaces netplan nm networkd'
            ;;
        fedora|centos|rhel|almalinux|ol|rocky)
            NETCFG_TYPE='scripts nm networkd'
            ;;
        opensuse*|sles|sled)
            NETCFG_TYPE='scripts'
            ;;
        amzn)
            NETCFG_TYPE='scripts'
            ;;
        freebsd)
            NETCFG_TYPE='bsd'
            ;;
        *)
            NETCFG_TYPE='none'
            ;;
    esac
else
    # trim and lowercase
    NETCFG_TYPE=$(echo "$NETCFG_TYPE" | \
        sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' | \
        tr '[:upper:]' '[:lower:]')

    # support alternative names for some configuration renderers
    case "${NETCFG_TYPE}" in
        networkmanager)
            NETCFG_TYPE='nm'
            ;;
        systemd-networkd|systemd-network|systemd)
            NETCFG_TYPE='networkd'
            ;;
        redhat)
            NETCFG_TYPE='scripts'
            ;;
        debian)
            NETCFG_TYPE='interfaces'
            ;;
        freebsd)
            NETCFG_TYPE='bsd'
            ;;
    esac
fi

if [ "${NETCFG_TYPE}" != 'none' ] ; then
    _found_valid_netcfg='no'

    # from a space separated list of $NETCFG_TYPE candidates check one
    # by one and select the first suitable one for current environment
    for _cfgtype in ${NETCFG_TYPE} ; do
        _cfgtype_file="/etc/one-context.d/loc-10-network.d/netcfg-$(basename "${_cfgtype}")"

        if [ -e "${_cfgtype_file}" ] ; then
            # reload functions to reset back any overrides from prev. netcfg-X
            .  /etc/one-context.d/loc-10-network.d/functions
            . "${_cfgtype_file}"
        else
            echo "ERROR [!]: Requested network type is not implemented: ${_cfgtype}" >&2
            exit 1
        fi

        if is_network_supported ; then
            _found_valid_netcfg='yes'
            break
        fi
    done

    if [ "${_found_valid_netcfg}" = 'no' ] ; then
        echo "ERROR [!]: None of the requested network types is supported on: ${os_id}" >&2
        exit 1
    fi
else
    # any action is meaningless without functioning network type
    action='none'
fi

# regardless of the required_context_type we need cleanup in the 'local' stage
#
# TODO: currently we must skip cleanup during reconfigure action (check-out the
# initialize_network function) otherwise we would wiped-out running config and
# broke the system
if [ "${context_type}" = 'local' ] ; then
    case "$action" in
        configure|reconfigure)
            initialize_network
            ;;
        *)
            echo "ERROR [!]: Unknown ACTION: ${action}" >&2
            exit 1
            ;;
    esac
fi

# this is a contextualization guard
# shellcheck disable=SC2154
case "${required_context_type}" in
    ''|local|online)
        if [ "${required_context_type:-local}" != "${context_type}" ] ; then
            # skip this netcfg at this stage
            exit 0
        fi
        ;;
    *)
        echo "ERROR [!]: Unknown required context type: ${required_context_type}" >&2
        exit 1
        ;;
esac

case "$action" in
    none)
        echo "INFO: Network will not be configured" >&2
        ;;
    configure)
        configure_network
        ;;
    reconfigure)
        configure_network
        reload_network
        ;;
    *)
        echo "ERROR [!]: Unknown ACTION: ${action}" >&2
        exit 1
        ;;
esac

exit 0

PK 99