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 DELAY ENABLE_IPV6 ENABLE_IPV4"
  25
  26 # Default settings.
  27 DELAY=0
  28 ENABLE_IPV6="on"
  29 ENABLE_IPV4="on"
  30
  31 hook_check_config_settings() {
  32         assert isset DELAY
  33         assert isinteger DELAY
  34         assert isset ENABLE_IPV6
  35         assert isbool ENABLE_IPV6
  36         assert isset ENABLE_IPV4
  37         assert isbool ENABLE_IPV4
  38 }
  39
  40 hook_parse_cmdline() {
  41         while [ $# -gt 0 ]; do
  42                 case "${1}" in
  43                         --delay=*)
  44                                 DELAY="$(cli_get_val "${1}")"
  45                                 ;;
  46                         --enable-ipv6)
  47                                 ENABLE_IPV6="on"
  48                                 ;;
  49                         --disable-ipv6)
  50                                 ENABLE_IPV6="off"
  51                                 ;;
  52                         --enable-ipv4)
  53                                 ENABLE_IPV4="on"
  54                                 ;;
  55                         --disable-ipv4)
  56                                 ENABLE_IPV4="off"
  57                                 ;;
  58                         *)
  59                                 warning "Ignoring unknown option '${1}'"
  60                                 ;;
  61                 esac
  62                 shift
  63         done
  64 }
  65
  66 hook_new() {
  67         local zone="${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         # Check if the user disabled ipv4 and ipv6
  81
  82         if ! enabled ENABLE_IPV6 && ! enabled ENABLE_IPV4; then
  83                 log ERROR "You disabled IPv6 and IPv4. At least one must be enabled"
  84                 return ${EXIT_ERROR}
  85         fi
  86
  87         zone_config_settings_write "${zone}" "${HOOK}"
  88
  89         exit ${EXIT_OK}
  90 }
  91
  92 hook_up() {
  93         local zone=${1}
  94         local config=${2}
  95         shift 2
  96
  97         if ! device_exists ${zone}; then
  98                 error "Zone '${zone}' doesn't exist."
  99                 exit ${EXIT_ERROR}
 100         fi
 101
 102         zone_config_settings_read "${zone}" "${config}"
 103
 104         # Start dhclient for IPv6 on this zone if enabled.
 105         if enabled ENABLE_IPV6; then
 106                 dhclient_start ${zone} ipv6
 107         fi
 108
 109         # Start dhclient for IPv4 on this zone if enabled.
 110         if enabled ENABLE_IPV4; then
 111                 dhclient_start ${zone} ipv4
 112         fi
 113
 114         exit ${EXIT_OK}
 115 }
 116
 117 hook_down() {
 118         local zone=${1}
 119         local config=${2}
 120         shift 2
 121
 122         if ! device_exists ${zone}; then
 123                 error "Zone '${zone}' doesn't exist."
 124                 exit ${EXIT_ERROR}
 125         fi
 126
 127         # Stop dhclient for IPv6 on this zone.
 128         dhclient_stop ${zone} ipv6
 129
 130         # Stop dhclient for IPv4 on this zone.
 131         dhclient_stop ${zone} ipv4
 132
 133         exit ${EXIT_OK}
 134 }
 135
 136 hook_status() {
 137         local zone=${1}
 138         local config=${2}
 139         shift 2
 140
 141         if ! device_exists ${zone}; then
 142                 error "Zone '${zone}' doesn't exist."
 143                 exit ${EXIT_ERROR}
 144         fi
 145
 146         zone_config_settings_read "${zone}" "${config}"
 147
 148         local status
 149         if dhclient_status ${zone} ipv4 || dhclient_status ${zone} ipv6; then
 150                 status="${MSG_HOOK_UP}"
 151         else
 152                 status="${MSG_HOOK_DOWN}"
 153         fi
 154         cli_statusline 3 "${HOOK}" "${status}"
 155
 156         cli_space
 157
 158         local proto
 159         for proto in "IPv6" "IPv4"; do
 160                 local _proto=${proto,,}
 161
 162                 cli_print_fmt1 3 "${proto}"
 163
 164                 if enabled ENABLE_${proto^^}; then
 165                         cli_print_fmt1 4 "Status" "enabled"
 166
 167                         local address="$(db_get "${zone}/${_proto}/local-ip-address")"
 168                         if isset address; then
 169                                 cli_print_fmt1 4 "Address" "${address}"
 170                         fi
 171
 172                         local gateway="$(db_get "${zone}/${_proto}/remote-ip-address")"
 173                         if isset gateway; then
 174                                 cli_print_fmt1 4 "Gateway" "${gateway}"
 175                         fi
 176
 177                         local dns_servers="$(db_get "${zone}/${_proto}/domain-name-servers")"
 178                         if isset dns_servers; then
 179                                 cli_print_fmt1 4 "DNS Servers" "${dns_servers}"
 180                         fi
 181                 else
 182                         cli_print_fmt1 4 "Status" "disabled"
 183                 fi
 184
 185                 cli_space
 186
 187         done
 188
 189         exit ${EXIT_OK}
 190 }