#!/bin/sh
# =====================================================================
#  Projet  : DARKWALL
#  Fichier : bin/ifdhcpexit.firewall
#  Auteur  : Nicolas "DarkHack" Chapuis (c) 2026
# ================== DARKHACK ==================
#        [ darkweb.fr  -  system online ]
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#       https://www.perplexity.ai
# ==============================================
#
#  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.
# =====================================================================

# loop over the 4 possible prefixes: (empty), cur_, new_, old_
jsonParamDhcp=""
first=1
for prefix in '' 'cur_' 'new_' 'old_'; do
 # loop over the DHCP variables passed to dhclient-script
 for basevar in reason interface medium alias_ip_address \
  ip_address host_name network_number subnet_mask \
  broadcast_address routers static_routes \
  rfc3442_classless_static_routes \
  domain_name domain_search domain_name_servers \
  netbios_name_servers netbios_scope \
  ntp_servers \
  ip6_address ip6_prefix ip6_prefixlen \
  dhcp6_domain_search dhcp6_name_servers
 do
  
  var="${prefix}${basevar}"
  content=""
  eval "content=\"\$$var\""
  # show only variables with values set
  if [ -n "${content}" ]; then
   if [ "$first" -eq 1 ];then
    first=0
    jsonParamDhcp="\"${var}\":\"${content}\""
   else
    jsonParamDhcp="${jsonParamDhcp},\"${var}\":\"${content}\""
   fi
  fi
 done
done
jsonParamDhcp="{${jsonParamDhcp}}"
sh /etc/darkwall/bin/tryPipeMessage dhcp-exit "$( echo "${jsonParamDhcp}" | base64 | tr -d '[:space:]')" &
[ -f /etc/darkwall/data/dhcp-nudge.sh ] && sh /etc/darkwall/data/dhcp-nudge.sh > /tmp/dhcp-nudge.log &