src/initscripts/networking/functions.network

   1 #!/bin/sh
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007-2022  IPFire Team  <info@ipfire.org>                     #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 . /etc/sysconfig/rc
  23 . $rc_functions
  24
  25 eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
  26 eval $(/usr/local/bin/readhash /var/ipfire/dns/settings)
  27
  28 dhcpcd_get_pid() {
  29                 # This function returns the pid of a dhcpcd by a given
  30                 # network device, if a pidfile exists.
  31
  32                 local device="$1"
  33                 local pidfile="/var/run/dhcpcd/${device}.pid"
  34
  35                 # Check if a pid file exists.
  36                 if [ -f "${pidfile}" ] ; then
  37
  38                         # Get the pid from the file.
  39                         local pid="$(<"${pidfile}")"
  40
  41                         echo "${pid}"
  42                 fi
  43 }
  44
  45 dhcpcd_is_running() {
  46         # This functions checks if a dhcpcd is running by a given pid.
  47
  48         local pid="$1"
  49
  50         # Check if a dhcpcd is running.
  51         if [ -n "${pid}" -a -d "/proc/${pid}" ]; then
  52                 # Return "0" (True) if a dhcpcd is running.
  53                 return 0
  54         fi
  55
  56         # Return 1 (False) no dhcpcd is running.
  57         return 1
  58 }
  59
  60 dhcpcd_start() {
  61         # This function will start a dhcpcd on a speciefied device.
  62
  63         local device="$1"
  64         local dhcp_start=()
  65
  66         boot_mesg -n "Starting dhcpcd on the ${device} interface..."
  67
  68         # Check if a dhcpcd is already running.
  69         local pid="$(dhcpcd_get_pid "${device}")"
  70
  71         if  dhcpcd_is_running "${pid}"; then
  72                 boot_mesg "dhcpcd already running!" ${WARNING}
  73                 echo_warning
  74                 exit 2
  75         fi
  76
  77         # Check if a DHCP hostname has been set.
  78         if [ -n "${RED_DHCP_HOSTNAME}" ]; then
  79                 dhcp_start+=( "-h" "${RED_DHCP_HOSTNAME}" )
  80         fi
  81
  82         # Tell dhcpcd to use the configured MTU
  83         if [ -n "${RED_DHCP_FORCE_MTU}" ]; then
  84                 dhcp_start+=( "--static" "mtu=${RED_DHCP_FORCE_MTU}" )
  85         fi
  86
  87         # Start dhcpcd.
  88         /sbin/dhcpcd "${dhcp_start[@]}" ${device} >/dev/null 2>&1
  89         ret="$?"
  90
  91         if [ "${ret}" -eq 0 ]; then
  92                 . /var/ipfire/dhcpc/dhcpcd-"${device}".info
  93
  94                         if [ $ip_address ]; then
  95                         echo ""
  96                         echo_ok
  97                         boot_mesg "           DHCP Assigned Settings for ${device}:"
  98                         boot_mesg_flush
  99                         boot_mesg "           IP Address:      $ip_address"
 100                         boot_mesg_flush
 101
 102                         if [ -n "${RED_DHCP_HOSTNAME}" ]; then
 103                                 boot_mesg "           Hostname:        $RED_DHCP_HOSTNAME"
 104                                 boot_mesg_flush
 105                         fi
 106
 107                         boot_mesg "           Subnet Mask:     $subnet_mask"
 108                         boot_mesg_flush
 109                         boot_mesg "           Default Gateway: $routers"
 110                         boot_mesg_flush
 111                         boot_mesg "           DNS Server:      $domain_name_servers"
 112                         boot_mesg_flush
 113                 else
 114                         echo ""
 115                         echo_ok
 116                         boot_mesg "DHCP for ${device} still running..."
 117                         boot_mesg_flush
 118                 fi
 119         else
 120                 echo ""
 121                 $(exit "${ret}")
 122                 evaluate_retval
 123         fi
 124 }
 125
 126 dhcpcd_stop() {
 127         # This function stops a previously started dhcpcd on a given device.
 128
 129         local device="$1"
 130         local dhcp_stop="-k"
 131         local leaseinfo="/var/ipfire/dhcpc/dhcpcd-${device}.info"
 132
 133         boot_mesg -n "Stopping dhcpcd on the ${device} interface..."
 134
 135         # Check if a dhcpcd is running.
 136         local pid="$(dhcpcd_get_pid "${device}")"
 137
 138         if ! dhcpcd_is_running "${pid}"; then
 139                 boot_mesg "    Not running." ${WARNING}
 140                 echo_warning
 141                 exit 1
 142         fi
 143
 144         # Stop dhcpcd.
 145         /sbin/dhcpcd ${dhcp_stop} ${device} &> /dev/null
 146         ret="$?"
 147
 148         # Wait until dhcpd has stopped.
 149         while [ -d "/proc/${pid}" ]; do
 150                 sleep 1
 151                 # repeat stop if dhcp was still running
 152                 /sbin/dhcpcd ${dhcp_stop} ${device} &> /dev/null
 153         done
 154
 155         # Display console message, depended on the exit code
 156         # of the stopped dhcpcd.
 157         if [ "${ret}" -eq 0 ]; then
 158                 boot_mesg
 159                 echo_ok
 160         elif [ "${ret}" -eq 1 ]; then
 161                 boot_mesg "failed to stop dhcpcd!" ${WARNING}
 162                 echo_warning
 163         else
 164                 boot_mesg
 165                 echo_failure
 166         fi
 167 }