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         local id="${1}"
  39         shift
  40
  41         while [ $# -gt 0 ]; do
  42                 case "${1}" in
  43                         --enable-ipv6)
  44                                 ENABLE_IPV6="on"
  45                                 ;;
  46                         --disable-ipv6)
  47                                 ENABLE_IPV6="off"
  48                                 ;;
  49                         --enable-ipv4)
  50                                 ENABLE_IPV4="on"
  51                                 ;;
  52                         --disable-ipv4)
  53                                 ENABLE_IPV4="off"
  54                                 ;;
  55                         *)
  56                                 warning "Ignoring unknown option '${1}'"
  57                                 ;;
  58                 esac
  59                 shift
  60         done
  61
  62         # Check if the user disabled ipv6 and ipv4
  63         if ! enabled ENABLE_IPV6 && ! enabled ENABLE_IPV4; then
  64                 log ERROR "You disabled IPv6 and IPv4. At least one must be enabled"
  65                 return ${EXIT_ERROR}
  66         fi
  67 }
  68
  69 hook_new() {
  70         local zone="${1}"
  71         shift
  72
  73         if zone_config_hook_is_configured ${zone} "dhcp"; then
  74                 log ERROR "You can configure the dhcp hook only once for a zone"
  75                 return ${EXIT_ERROR}
  76         fi
  77
  78         local id=$(zone_config_get_new_id ${zone})
  79         log DEBUG "ID for the config is: ${id}"
  80
  81         if ! hook_parse_cmdline "${id}" "$@"; then
  82                 # Return an error if the parsing of the cmd line fails
  83                 return ${EXIT_ERROR}
  84         fi
  85
  86         zone_config_settings_write "${zone}" "${HOOK}" "${id}"
  87
  88         exit ${EXIT_OK}
  89 }
  90
  91 hook_up() {
  92         local zone=${1}
  93         local config=${2}
  94         shift 2
  95
  96         if ! device_exists ${zone}; then
  97                 error "Zone '${zone}' doesn't exist."
  98                 exit ${EXIT_ERROR}
  99         fi
 100
 101         zone_config_settings_read "${zone}" "${config}"
 102
 103         # Start dhclient for IPv6 on this zone if enabled.
 104         if enabled ENABLE_IPV6; then
 105                 dhclient_start ${zone} ipv6
 106         fi
 107
 108         # Start dhclient for IPv4 on this zone if enabled.
 109         if enabled ENABLE_IPV4; then
 110                 dhclient_start ${zone} ipv4
 111         fi
 112
 113         exit ${EXIT_OK}
 114 }
 115
 116 hook_down() {
 117         local zone=${1}
 118         local config=${2}
 119         shift 2
 120
 121         if ! device_exists ${zone}; then
 122                 error "Zone '${zone}' doesn't exist."
 123                 exit ${EXIT_ERROR}
 124         fi
 125
 126         # Stop dhclient for IPv6 on this zone.
 127         dhclient_stop ${zone} ipv6
 128
 129         # Stop dhclient for IPv4 on this zone.
 130         dhclient_stop ${zone} ipv4
 131
 132         exit ${EXIT_OK}
 133 }
 134
 135 hook_status() {
 136         local zone=${1}
 137         local config=${2}
 138         shift 2
 139
 140         if ! device_exists ${zone}; then
 141                 error "Zone '${zone}' doesn't exist."
 142                 exit ${EXIT_ERROR}
 143         fi
 144
 145         zone_config_settings_read "${zone}" "${config}"
 146
 147         local status
 148         if dhclient_status ${zone} ipv4 || dhclient_status ${zone} ipv6; then
 149                 status="${MSG_HOOK_UP}"
 150         else
 151                 status="${MSG_HOOK_DOWN}"
 152         fi
 153         cli_statusline 3 "${HOOK}" "${status}"
 154
 155         cli_space
 156
 157         local proto
 158         for proto in "IPv6" "IPv4"; do
 159                 local _proto=${proto,,}
 160
 161                 cli_print_fmt1 3 "${proto}"
 162
 163                 if enabled ENABLE_${proto^^}; then
 164                         cli_print_fmt1 4 "Status" "enabled"
 165
 166                         local address="$(db_get "${zone}/${_proto}/local-ip-address")"
 167                         if isset address; then
 168                                 cli_print_fmt1 4 "Address" "${address}"
 169                         fi
 170
 171                         local gateway="$(db_get "${zone}/${_proto}/remote-ip-address")"
 172                         if isset gateway; then
 173                                 cli_print_fmt1 4 "Gateway" "${gateway}"
 174                         fi
 175
 176                         local dns_servers="$(db_get "${zone}/${_proto}/domain-name-servers")"
 177                         if isset dns_servers; then
 178                                 cli_print_fmt1 4 "DNS Servers" "${dns_servers}"
 179                         fi
 180                 else
 181                         cli_print_fmt1 4 "Status" "disabled"
 182                 fi
 183
 184                 cli_space
 185
 186         done
 187
 188         exit ${EXIT_OK}
 189 }