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         # Check if the user disabled ipv6 and ipv4
  60         if ! enabled ENABLE_IPV6 && ! enabled ENABLE_IPV4; then
  61                 log ERROR "You disabled IPv6 and IPv4. At least one must be enabled"
  62                 return ${EXIT_ERROR}
  63         fi
  64 }
  65
  66 hook_new() {
  67         local zone="${1}"
  68         shift
  69
  70         if zone_config_hook_is_configured ${zone} "dhcp"; then
  71                 log ERROR "You can configure the dhcp hook only once for a zone"
  72                 return ${EXIT_ERROR}
  73         fi
  74
  75         if ! hook_parse_cmdline $@; then
  76                 # Return an error if the parsing of the cmd line fails
  77                 return ${EXIT_ERROR}
  78         fi
  79
  80         zone_config_settings_write "${zone}" "${HOOK}"
  81
  82         exit ${EXIT_OK}
  83 }
  84
  85 hook_up() {
  86         local zone=${1}
  87         local config=${2}
  88         shift 2
  89
  90         if ! device_exists ${zone}; then
  91                 error "Zone '${zone}' doesn't exist."
  92                 exit ${EXIT_ERROR}
  93         fi
  94
  95         zone_config_settings_read "${zone}" "${config}"
  96
  97         # Start dhclient for IPv6 on this zone if enabled.
  98         if enabled ENABLE_IPV6; then
  99                 dhclient_start ${zone} ipv6
 100         fi
 101
 102         # Start dhclient for IPv4 on this zone if enabled.
 103         if enabled ENABLE_IPV4; then
 104                 dhclient_start ${zone} ipv4
 105         fi
 106
 107         exit ${EXIT_OK}
 108 }
 109
 110 hook_down() {
 111         local zone=${1}
 112         local config=${2}
 113         shift 2
 114
 115         if ! device_exists ${zone}; then
 116                 error "Zone '${zone}' doesn't exist."
 117                 exit ${EXIT_ERROR}
 118         fi
 119
 120         # Stop dhclient for IPv6 on this zone.
 121         dhclient_stop ${zone} ipv6
 122
 123         # Stop dhclient for IPv4 on this zone.
 124         dhclient_stop ${zone} ipv4
 125
 126         exit ${EXIT_OK}
 127 }
 128
 129 hook_status() {
 130         local zone=${1}
 131         local config=${2}
 132         shift 2
 133
 134         if ! device_exists ${zone}; then
 135                 error "Zone '${zone}' doesn't exist."
 136                 exit ${EXIT_ERROR}
 137         fi
 138
 139         zone_config_settings_read "${zone}" "${config}"
 140
 141         local status
 142         if dhclient_status ${zone} ipv4 || dhclient_status ${zone} ipv6; then
 143                 status="${MSG_HOOK_UP}"
 144         else
 145                 status="${MSG_HOOK_DOWN}"
 146         fi
 147         cli_statusline 3 "${HOOK}" "${status}"
 148
 149         cli_space
 150
 151         local proto
 152         for proto in "IPv6" "IPv4"; do
 153                 local _proto=${proto,,}
 154
 155                 cli_print_fmt1 3 "${proto}"
 156
 157                 if enabled ENABLE_${proto^^}; then
 158                         cli_print_fmt1 4 "Status" "enabled"
 159
 160                         local address="$(db_get "${zone}/${_proto}/local-ip-address")"
 161                         if isset address; then
 162                                 cli_print_fmt1 4 "Address" "${address}"
 163                         fi
 164
 165                         local gateway="$(db_get "${zone}/${_proto}/remote-ip-address")"
 166                         if isset gateway; then
 167                                 cli_print_fmt1 4 "Gateway" "${gateway}"
 168                         fi
 169
 170                         local dns_servers="$(db_get "${zone}/${_proto}/domain-name-servers")"
 171                         if isset dns_servers; then
 172                                 cli_print_fmt1 4 "DNS Servers" "${dns_servers}"
 173                         fi
 174                 else
 175                         cli_print_fmt1 4 "Status" "disabled"
 176                 fi
 177
 178                 cli_space
 179
 180         done
 181
 182         exit ${EXIT_OK}
 183 }