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_SETTINGS=(
  25         "ENABLE_IPV6"
  26         "ENABLE_IPV4"
  27 )
  28
  29 DEFAULT_ENABLE_IPV6="on"
  30 DEFAULT_ENABLE_IPV4="on"
  31
  32 hook_check_config_settings() {
  33         assert isset ENABLE_IPV6
  34         assert isbool ENABLE_IPV6
  35         assert isset ENABLE_IPV4
  36         assert isbool ENABLE_IPV4
  37 }
  38
  39 hook_parse_cmdline() {
  40         local id="${1}"
  41         shift
  42
  43         while [ $# -gt 0 ]; do
  44                 case "${1}" in
  45                         --enable-ipv6)
  46                                 ENABLE_IPV6="on"
  47                                 ;;
  48                         --disable-ipv6)
  49                                 ENABLE_IPV6="off"
  50                                 ;;
  51                         --enable-ipv4)
  52                                 ENABLE_IPV4="on"
  53                                 ;;
  54                         --disable-ipv4)
  55                                 ENABLE_IPV4="off"
  56                                 ;;
  57                         *)
  58                                 warning "Ignoring unknown option '${1}'"
  59                                 ;;
  60                 esac
  61                 shift
  62         done
  63
  64         # Check if the user disabled ipv6 and ipv4
  65         if ! enabled ENABLE_IPV6 && ! enabled ENABLE_IPV4; then
  66                 log ERROR "You disabled IPv6 and IPv4. At least one must be enabled"
  67                 return ${EXIT_ERROR}
  68         fi
  69 }
  70
  71 hook_new() {
  72         local zone="${1}"
  73         shift
  74
  75         if zone_config_hook_is_configured ${zone} "dhcp"; then
  76                 log ERROR "You can configure the dhcp hook only once for a zone"
  77                 return ${EXIT_ERROR}
  78         fi
  79
  80         local id=$(zone_config_get_new_id ${zone})
  81         log DEBUG "ID for the config is: ${id}"
  82
  83         # Import defaults
  84         hook_set_defaults
  85
  86         if ! hook_parse_cmdline "${id}" "$@"; then
  87                 # Return an error if the parsing of the cmd line fails
  88                 return ${EXIT_ERROR}
  89         fi
  90
  91         zone_config_settings_write "${zone}" "${HOOK}" "${id}"
  92
  93         exit ${EXIT_OK}
  94 }
  95
  96 hook_up() {
  97         local zone=${1}
  98         local config=${2}
  99         shift 2
 100
 101         if ! device_exists ${zone}; then
 102                 error "Zone '${zone}' doesn't exist."
 103                 exit ${EXIT_ERROR}
 104         fi
 105
 106         zone_config_settings_read "${zone}" "${config}"
 107
 108         # Start dhclient for IPv6 on this zone if enabled.
 109         if enabled ENABLE_IPV6; then
 110                 dhclient_start ${zone} ipv6
 111         fi
 112
 113         # Start dhclient for IPv4 on this zone if enabled.
 114         if enabled ENABLE_IPV4; then
 115                 dhclient_start ${zone} ipv4
 116         fi
 117
 118         exit ${EXIT_OK}
 119 }
 120
 121 hook_down() {
 122         local zone=${1}
 123         local config=${2}
 124         shift 2
 125
 126         if ! device_exists ${zone}; then
 127                 error "Zone '${zone}' doesn't exist."
 128                 exit ${EXIT_ERROR}
 129         fi
 130
 131         # Stop dhclient for IPv6 on this zone.
 132         dhclient_stop ${zone} ipv6
 133
 134         # Stop dhclient for IPv4 on this zone.
 135         dhclient_stop ${zone} ipv4
 136
 137         exit ${EXIT_OK}
 138 }
 139
 140 hook_status() {
 141         local zone=${1}
 142         local config=${2}
 143         shift 2
 144
 145         if ! device_exists ${zone}; then
 146                 error "Zone '${zone}' doesn't exist."
 147                 exit ${EXIT_ERROR}
 148         fi
 149
 150         zone_config_settings_read "${zone}" "${config}"
 151
 152         local status
 153         if dhclient_status ${zone} ipv4 || dhclient_status ${zone} ipv6; then
 154                 status="${MSG_HOOK_UP}"
 155         else
 156                 status="${MSG_HOOK_DOWN}"
 157         fi
 158         cli_statusline 3 "${HOOK}" "${status}"
 159
 160         cli_space
 161
 162         local proto
 163         for proto in "IPv6" "IPv4"; do
 164                 local _proto=${proto,,}
 165
 166                 cli_print_fmt1 3 "${proto}"
 167
 168                 if enabled ENABLE_${proto^^}; then
 169                         cli_print_fmt1 4 "Status" "enabled"
 170
 171                         local address="$(db_get "${zone}/${_proto}/local-ip-address")"
 172                         if isset address; then
 173                                 cli_print_fmt1 4 "Address" "${address}"
 174                         fi
 175
 176                         local gateway="$(db_get "${zone}/${_proto}/remote-ip-address")"
 177                         if isset gateway; then
 178                                 cli_print_fmt1 4 "Gateway" "${gateway}"
 179                         fi
 180
 181                         local dns_servers="$(db_get "${zone}/${_proto}/domain-name-servers")"
 182                         if isset dns_servers; then
 183                                 cli_print_fmt1 4 "DNS Servers" "${dns_servers}"
 184                         fi
 185                 else
 186                         cli_print_fmt1 4 "Status" "disabled"
 187                 fi
 188
 189                 cli_space
 190
 191         done
 192
 193         exit ${EXIT_OK}
 194 }