src/hooks/configs/dhcp

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2010  Michael Tremer & Christian Schmidt                      #
   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 . /usr/lib/network/header-config
  23
  24 HOOK_CONFIG_SETTINGS="HOOK ENABLE_IPV6 ENABLE_IPV4"
  25
  26 # Default settings.
  27 ENABLE_IPV6="on"
  28 ENABLE_IPV4="on"
  29
  30 hook_check_config_settings() {
  31         assert isset ENABLE_IPV6
  32         assert isbool ENABLE_IPV6
  33         assert isset ENABLE_IPV4
  34         assert isbool ENABLE_IPV4
  35 }
  36
  37 hook_parse_cmdline() {
  38         while [ $# -gt 0 ]; do
  39                 case "${1}" in
  40                         --enable-ipv6)
  41                                 ENABLE_IPV6="on"
  42                                 ;;
  43                         --disable-ipv6)
  44                                 ENABLE_IPV6="off"
  45                                 ;;
  46                         --enable-ipv4)
  47                                 ENABLE_IPV4="on"
  48                                 ;;
  49                         --disable-ipv4)
  50                                 ENABLE_IPV4="off"
  51                                 ;;
  52                         *)
  53                                 warning "Ignoring unknown option '${1}'"
  54                                 ;;
  55                 esac
  56                 shift
  57         done
  58 }
  59
  60 hook_new() {
  61         local zone="${1}"
  62         shift
  63
  64         if zone_config_hook_is_configured ${zone} "dhcp"; then
  65                 log ERROR "You can configure the dhcp hook only once for a zone"
  66                 return ${EXIT_ERROR}
  67         fi
  68
  69         if ! hook_parse_cmdline $@; then
  70                 # Return an error if the parsing of the cmd line fails
  71                 return ${EXIT_ERROR}
  72         fi
  73
  74         # Check if the user disabled ipv4 and ipv6
  75
  76         if ! enabled ENABLE_IPV6 && ! enabled ENABLE_IPV4; then
  77                 log ERROR "You disabled IPv6 and IPv4. At least one must be enabled"
  78                 return ${EXIT_ERROR}
  79         fi
  80
  81         zone_config_settings_write "${zone}" "${HOOK}"
  82
  83         exit ${EXIT_OK}
  84 }
  85
  86 hook_up() {
  87         local zone=${1}
  88         local config=${2}
  89         shift 2
  90
  91         if ! device_exists ${zone}; then
  92                 error "Zone '${zone}' doesn't exist."
  93                 exit ${EXIT_ERROR}
  94         fi
  95
  96         zone_config_settings_read "${zone}" "${config}"
  97
  98         # Start dhclient for IPv6 on this zone if enabled.
  99         if enabled ENABLE_IPV6; then
 100                 dhclient_start ${zone} ipv6
 101         fi
 102
 103         # Start dhclient for IPv4 on this zone if enabled.
 104         if enabled ENABLE_IPV4; then
 105                 dhclient_start ${zone} ipv4
 106         fi
 107
 108         exit ${EXIT_OK}
 109 }
 110
 111 hook_down() {
 112         local zone=${1}
 113         local config=${2}
 114         shift 2
 115
 116         if ! device_exists ${zone}; then
 117                 error "Zone '${zone}' doesn't exist."
 118                 exit ${EXIT_ERROR}
 119         fi
 120
 121         # Stop dhclient for IPv6 on this zone.
 122         dhclient_stop ${zone} ipv6
 123
 124         # Stop dhclient for IPv4 on this zone.
 125         dhclient_stop ${zone} ipv4
 126
 127         exit ${EXIT_OK}
 128 }
 129
 130 hook_status() {
 131         local zone=${1}
 132         local config=${2}
 133         shift 2
 134
 135         if ! device_exists ${zone}; then
 136                 error "Zone '${zone}' doesn't exist."
 137                 exit ${EXIT_ERROR}
 138         fi
 139
 140         zone_config_settings_read "${zone}" "${config}"
 141
 142         local status
 143         if dhclient_status ${zone} ipv4 || dhclient_status ${zone} ipv6; then
 144                 status="${MSG_HOOK_UP}"
 145         else
 146                 status="${MSG_HOOK_DOWN}"
 147         fi
 148         cli_statusline 3 "${HOOK}" "${status}"
 149
 150         cli_space
 151
 152         local proto
 153         for proto in "IPv6" "IPv4"; do
 154                 local _proto=${proto,,}
 155
 156                 cli_print_fmt1 3 "${proto}"
 157
 158                 if enabled ENABLE_${proto^^}; then
 159                         cli_print_fmt1 4 "Status" "enabled"
 160
 161                         local address="$(db_get "${zone}/${_proto}/local-ip-address")"
 162                         if isset address; then
 163                                 cli_print_fmt1 4 "Address" "${address}"
 164                         fi
 165
 166                         local gateway="$(db_get "${zone}/${_proto}/remote-ip-address")"
 167                         if isset gateway; then
 168                                 cli_print_fmt1 4 "Gateway" "${gateway}"
 169                         fi
 170
 171                         local dns_servers="$(db_get "${zone}/${_proto}/domain-name-servers")"
 172                         if isset dns_servers; then
 173                                 cli_print_fmt1 4 "DNS Servers" "${dns_servers}"
 174                         fi
 175                 else
 176                         cli_print_fmt1 4 "Status" "disabled"
 177                 fi
 178
 179                 cli_space
 180
 181         done
 182
 183         exit ${EXIT_OK}
 184 }