src/initscripts/networking/dhcpcd.exe

   1 ###############################################################################
   2 #                                                                             #
   3 # IPFire.org - A linux based firewall                                         #
   4 # Copyright (C) 2007-2022  IPFire Team  <info@ipfire.org>                     #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 ###############################################################################
  20
  21 . /etc/sysconfig/rc
  22 . $rc_functions
  23 . /etc/init.d/networking/functions.network
  24
  25 eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
  26
  27 dhcpcd_up()
  28 {
  29         set | grep "^new_" | sed "s|^new_||g" | \
  30         sort > /var/ipfire/dhcpc/dhcpcd-$interface.info
  31
  32         #Check if this was the Red device...
  33         if [ ! "$interface" == "$RED_DEV" ]; then
  34                 exit 0;
  35         fi
  36
  37         # Check if we have to restart the services at update
  38         [ ! -e "/var/ipfire/red/active" ] && update=1;
  39         if [ "$old_domain_name_service" != "$new_domain_name_service" ]; then
  40                 update=1;
  41         fi
  42         if [ "$old_ip_address" != "$new_ip_address" ]; then
  43                 update=1;
  44         fi
  45         if [ "$old_routers" != "$new_routers" ]; then
  46                 update=1;
  47         fi
  48
  49         # Get DNS from dhcp
  50         /etc/rc.d/helper/getdnsfromdhcpc.pl 1 > /var/run/dns1
  51         /etc/rc.d/helper/getdnsfromdhcpc.pl 2 > /var/run/dns2
  52
  53         #Get IP Address
  54         echo -n "$new_ip_address"  > /var/ipfire/red/local-ipaddress
  55
  56         # Get default gateway
  57         if [ -n "${new_routers}" ]; then
  58                 grep -v -E "\<gateway\>" /etc/hosts > /tmp/hosts
  59                 echo "$new_routers      gateway"  >> /tmp/hosts
  60                 mv /tmp/hosts /etc/hosts
  61         fi
  62
  63         if [ $update ]; then
  64                 # Consider RED being active
  65                 touch /var/ipfire/red/active
  66
  67                 if [ -n "${new_routers}" ]; then
  68                         echo -n "${new_routers}" > /var/ipfire/red/remote-ipaddress
  69                 fi
  70
  71                 logger -p local0.info -t dhcpcd.exe[$$] "$interface has been (re)configured with IP=$new_ip_address"
  72                 run_subdir ${rc_base}/init.d/networking/red.up/
  73         fi
  74 }
  75
  76 dhcpcd_down()
  77 {
  78         set | grep "^new_" | sed "s|^new_||g" | \
  79         sort > /var/ipfire/dhcpc/dhcpcd-$interface.info
  80
  81         # Remove DNS servers
  82         rm -f /var/run/dns1 /var/run/dns2
  83
  84         # Consider RED to be no longer active
  85         rm -f /var/ipfire/red/active
  86
  87         if [ ! $reason == "PREINIT" ]; then
  88                 logger -p local0.info -t dhcpcd.exe[$$] "${interface} has been brought down ($reason)"
  89                 run_subdir ${rc_base}/init.d/networking/red.down/
  90         fi
  91
  92         # Remove any configured IP address from the device
  93         ip addr flush dev "${interface}" &>/dev/null
  94
  95         return 0
  96 }
  97
  98 case "${reason}" in
  99         BOUND|INFORM|REBIND|REBOOT|RENEW|TIMEOUT|STATIC)
 100                 dhcpcd_up
 101                 ;;
 102         PREINIT|EXPIRE|FAIL|IPV4LL|NAK|RELEASE|STOP)
 103                 dhcpcd_down
 104                 ;;
 105         # Ignored events where we do not need to do anything
 106         STOPPED|CARRIER|NOCARRIER)
 107                 ;;
 108         *)
 109                 logger -p "local0.info" -t "dhcpcd.exe[$$]" "Unhandled DHCP event: ${reason}"
 110                 ;;
 111 esac