#!/bin/sh -e
#
# 2014 Steven Armstrong (steven-cdist at armstrong.cc)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#

type_files="$__type/files/redhat"
mkdir "$__object/files"
# shellcheck disable=SC2154
interface_filename="ifcfg-${name}"

(
cat << DONE
# Created by cdist ${__type##*/}
# Do not change. Changes will be overwritten.
#

DONE

if [ -f "$__object/parameter/comment" ]; then
    awk '{ print "# "$0 }' < "$__object/parameter/comment"
fi

printf 'DEVICE="%s"\n' "$name"
printf 'NM_CONTROLLED=no\n'
printf 'USERCTL=no\n'

if [ -f "$__object/parameter/onboot" ]; then
   printf 'ONBOOT=yes\n'
else
   printf 'ONBOOT=no\n'
fi
if [ -f "$__object/parameter/hotplug" ]; then
   printf 'HOTPLUG=yes\n'
else
   printf 'HOTPLUG=no\n'
fi
if [ -f "$__object/parameter/nodns" ]; then
   printf 'PEERDNS=no\n'
else
   printf 'PEERDNS=yes\n'
fi
if [ -f "$__object/parameter/noroute" ]; then
   printf 'DEFROUTE=no\n'
else
   printf 'DEFROUTE=yes\n'
fi
if [ -f "$__object/parameter/no-network-wait-online" ]; then
   printf 'NO_NETWORK_WAIT_ONLINE=yes\n'
fi
if [ -f "$__object/parameter/symmetric-routing" ]; then
   # Deploy scripts that implement the feature ...
   __file /sbin/symmetric-routing \
      --owner root --group root --mode 0755 \
      --source "$__type/files/symmetric-routing"
   # ... then enable it in interface cfg file.
   printf 'SYMMETRIC_ROUTING=yes\n'
fi

ignored_parameters=""
manually_handled_parameters="name comment extra-config state method onboot hotplug nodns noroute no-network-wait-online symmetric-routing"
# shellcheck disable=SC2154
case "$method" in
   dhcp)
      printf 'BOOTPROTO=dhcp\n'
      ignored_parameters="$ignored_parameters address broadcast gateway netmask"
   ;;
   static|manual)
      printf 'BOOTPROTO=none\n'
   ;;
   *)
      echo "Unsupported value for parameter --method. Got '$method'. See man page for supported values." >&2
      exit 1
   ;;
esac

for param in "$__object"/parameter/*; do
   if echo "$ignored_parameters" | grep -w -q "$param"; then
      continue
   fi
   if echo "$manually_handled_parameters" | grep -w -q "$param"; then
      continue
   fi

   case "$param" in
      bond-master)
         # if someone is my master, I am a slave
         printf 'SLAVE=yes\n'
         printf 'MASTER=%s\n' "$(cat "$__object/parameter/$param")"
      ;;
      bond-*)
         key="$(echo "${param#*bond-}" | tr - _)"
         if [ "$param" = "bond-arp-ip-target" ]; then
            value="$(tr '\n' , < "$__object/parameter/$param")"
            # strip trailing comma
            value="${value%,}"
         else
            value="$(cat "$__object/parameter/$param")"
         fi
         printf '%s=%s\n' "$key" "$value" >> "$__object/files/bonding_opts"
      ;;
      *)
         # check for redhat specific name for this parameter
         if [ -f "$type_files/name-map" ]; then
            key="$(awk -v param="$param" '{ if ($1 == param) {print $2;} else { print param;} }' "$type_files/name-map")"
         else
            key="$param"
         fi
         # redhat likes things uppercase
         key="$(echo "$key" | tr '[:lower:]' '[:upper:]')"
         printf '%s=%s\n' "$key" "$(cat "$__object/parameter/$param")"
      ;;
   esac
done
if [ -f "$__object/files/bonding_opts" ]; then
   value="$(tr '\n' ' ' < "$__object/files/bonding_opts")"
   # strip trailing space
   value="${value% }"
   printf 'BONDING_OPTS="%s"\n' "$value"
fi

# shellcheck disable=SC2154
if [ -n "$vlan" ] && [ -n "$device" ]; then
   # Enable vlan for this interface
   printf 'VLAN=yes\n'
fi

if [ -f "$__object/parameter/extra-config" ]; then
   extra_config="$(cat "$__object/parameter/extra-config")"
   if [ "$extra_config" = "-" ]; then
      extra_config="$__object/stdin"
   fi
   cat "$extra_config"
fi


) >> "$__object/files/$interface_filename"

# shellcheck disable=SC2154
__file "/etc/sysconfig/network-scripts/$interface_filename" \
   --owner root \
   --group root \
   --mode 644 \
   --source "$__object/files/$interface_filename" \
   --state "$state"

# Deploy helper scripts
__file /sbin/ifupdown-local \
   --owner root --group root --mode 0755 \
   --source "$__type/files/redhat/ifupdown-local"
require="__file/sbin/ifupdown-local" \
   __link /sbin/ifup-local \
      --type symbolic \
      --source ./ifupdown-local
require="__file/sbin/ifupdown-local" \
   __link /sbin/ifdown-pre-local \
      --type symbolic \
      --source ./ifupdown-local
__file /sbin/ifup-pre-local \
   --owner root --group root --mode 0755 \
   --source "$__type/files/redhat/ifup-pre-local"