src/functions/functions.dhclient

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2012  IPFire Network Development Team                         #
   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 dhclient_start() {
  23         local interface=${1}
  24         local proto=${2}
  25
  26         assert isset interface
  27         assert device_exists ${interface}
  28
  29         local service=$(dhclient_proto2service ${proto} ${interface})
  30         service_start ${service}
  31 }
  32
  33 dhclient_stop() {
  34         local interface=${1}
  35         local proto=${2}
  36
  37         local service=$(dhclient_proto2service ${proto} ${interface})
  38         service_stop ${service}
  39 }
  40
  41 dhclient_status() {
  42         local interface=${1}
  43         local proto=${2}
  44
  45         local service=$(dhclient_proto2service ${proto} ${interface})
  46         service_status ${service}
  47 }
  48
  49 dhclient_proto2service() {
  50         local proto=${1}
  51         assert isset proto
  52
  53         local interface=${2}
  54         assert isset interface
  55
  56         local service
  57
  58         case "${proto}" in
  59                 ipv4)
  60                         service="dhclient4@${interface}.service"
  61                         ;;
  62                 ipv6)
  63                         service="dhclient6@${interface}.service"
  64                         ;;
  65                 *)
  66                         return ${EXIT_ERROR}
  67                         ;;
  68         esac
  69
  70         assert isset service
  71
  72         echo "${service}"
  73         return ${EXIT_OK}
  74 }
  75
  76 dhclient_write_config() {
  77         local interface=${1}
  78         local file=${2}
  79         shift 2
  80
  81         assert isset interface
  82         assert isset file
  83
  84         local hostname=${HOSTNAME%%.*}
  85         local prefix_delegation="false"
  86         local vendor=$(distro_get_pretty_name)
  87
  88         while [ $# -gt 0 ]; do
  89                 case "${1}" in
  90                         --hostname=*)
  91                                 hostname=$(cli_get_val ${1})
  92                                 ;;
  93                         --prefix-delegation=*)
  94                                 prefix_delegation="$(cli_get_bool "${1}")"
  95                                 ;;
  96                         --vendor=*)
  97                                 vendor=$(cli_get_val ${1})
  98                                 ;;
  99                         *)
 100                                 log WARNING $"Unknown configuration option passed: ${1}."
 101                                 ;;
 102                 esac
 103                 shift
 104         done
 105
 106         # Clear configuration file (if any).
 107         mkdir -p $(dirname ${file}) 2>/dev/null
 108         : > ${file}
 109
 110         # Print the header.
 111         (       echo "#"
 112                 echo "# This is a dhclient daemon configuration file for ${interface}."
 113                 echo "# THIS FILE IS AUTOMATICALLY GENERATED AND WILL OVERWRITE"
 114                 echo "# ANY CUSTOM CHANGES!"
 115                 echo "#"
 116                 echo "# $(date -u)"
 117                 echo "#"
 118                 echo
 119         ) >>${file}
 120
 121         # Global options.
 122         echo "send vendor-class-identifier \"${vendor}\";" >>${file}
 123         echo
 124
 125         # Interface options.
 126         (
 127                 echo "interface \"${interface}\" {"
 128
 129                 if isset hostname; then
 130                         echo "  send host-name \"${hostname}\";"
 131                         print
 132                 fi
 133
 134                 # Prefix delegation (IPv6).
 135                 if enabled prefix_delegation; then
 136                         print " # Prefix delegation"
 137                         print " also request dhcp6.ia-pd 1;"
 138                         print " send dhcp6.ia-na 1;"
 139                         print
 140                 fi
 141
 142                 echo "}"
 143         ) >>${file}
 144
 145         return ${EXIT_OK}
 146 }