src/hooks/configs/ipv4-static

   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_MANPAGE="network-config-ipv4-static"
  25
  26 HOOK_SETTINGS="HOOK ADDRESS PREFIX GATEWAY"
  27
  28 function hook_check() {
  29         assert isset ADDRESS
  30         assert isinteger PREFIX
  31
  32         if [ ${PREFIX} -gt 30 ]; then
  33                 error "PREFIX is greater than 30."
  34                 exit ${EXIT_ERROR}
  35         fi
  36 }
  37
  38 function hook_create() {
  39         local zone="${1}"
  40         assert zone_exists "${zone}"
  41         shift
  42
  43         local arg
  44         while read -r arg; do
  45                 local key="$(cli_get_key "${arg}")"
  46                 local val="$(cli_get_val "${arg}")"
  47
  48                 case "${key}" in
  49                         address)
  50                                 if ! ipv4_is_valid "${val}"; then
  51                                         error "Invalid IPv4 address: ${val}"
  52                                         exit ${EXIT_CONF_ERROR}
  53                                 fi
  54
  55                                 ADDRESS="${val}"
  56                                 ;;
  57
  58                         prefix)
  59                                 if ! ipv4_prefix_is_valid "${val}"; then
  60                                         error "Invalid IPv4 prefix: ${val}"
  61                                         exit ${EXIT_CONF_ERROR}
  62                                 fi
  63
  64                                 PREFIX="${val}"
  65                                 ;;
  66
  67                         gateway)
  68                                 if ! ipv4_is_valid "${val}"; then
  69                                         error "Invalid IPv4 address for gateway: ${val}"
  70                                         exit ${EXIT_CONF_ERROR}
  71                                 fi
  72
  73                                 GATEWAY="${val}"
  74                                 ;;
  75
  76                         # Compatibility switches
  77                         netmask)
  78                                 if ! ipv4_netmask_is_valid "${val}"; then
  79                                         error "Invalid netmask: ${val}"
  80                                         exit ${EXIT_CONF_ERROR}
  81                                 fi
  82
  83                                 # The netmask will be converted into a prefix
  84                                 PREFIX="$(ipv4_netmask2prefix ${val})"
  85                                 ;;
  86
  87                         # Unknown switches
  88                         *)
  89                                 error "Unhandled argument: ${arg}"
  90                                 exit ${EXIT_CONF_ERROR}
  91                                 ;;
  92                 esac
  93         done <<< "$(args $@)"
  94
  95         if ! isset ADDRESS; then
  96                 error "You need to provide an IPv4 address"
  97                 exit ${EXIT_CONF_ERROR}
  98         fi
  99
 100         if ! isset PREFIX; then
 101                 error "You need to provide an IPv4 prefix"
 102                 exit ${EXIT_CONF_ERROR}
 103         fi
 104
 105         if ! isset GATEWAY && zone_is_nonlocal "${zone}"; then
 106                 warning "You did not configure a gateway for a non-local zone"
 107         fi
 108
 109         # XXX maybe we can add some hashing to identify a configuration again
 110         zone_config_settings_write "${zone}" "${HOOK}.$(uuid)" ${HOOK_SETTINGS}
 111
 112         exit ${EXIT_OK}
 113 }
 114
 115 function hook_up() {
 116         local zone=${1}
 117         local config=${2}
 118         shift 2
 119
 120         if ! device_exists ${zone}; then
 121                 error "Zone '${zone}' doesn't exist."
 122                 exit ${EXIT_ERROR}
 123         fi
 124
 125         zone_config_settings_read "${zone}" "${config}" ${HOOK_SETTINGS}
 126
 127         ip_address_add ${zone} ${ADDRESS}/${PREFIX}
 128
 129         # Save configuration
 130         routing_db_set ${zone} ipv4 type "${HOOK}"
 131         routing_db_set ${zone} ipv4 local-ip-address "${ADDRESS}/${PREFIX}"
 132         routing_db_set ${zone} ipv4 remote-ip-address "${GATEWAY}"
 133         routing_db_set ${zone} ipv4 active 1
 134
 135         routing_update ${zone} ipv4
 136         routing_default_update
 137
 138         exit ${EXIT_OK}
 139 }
 140
 141 function hook_down() {
 142         local zone=${1}
 143         local config=${2}
 144         shift 2
 145
 146         if ! device_exists ${zone}; then
 147                 error "Zone '${zone}' doesn't exist."
 148                 exit ${EXIT_ERROR}
 149         fi
 150
 151         zone_config_settings_read "${zone}" "${config}" ${HOOK_SETTINGS}
 152
 153         ip_address_del ${zone} ${ADDRESS}/${PREFIX}
 154
 155         # Update routing tables.
 156         routing_default_update
 157
 158         exit ${EXIT_OK}
 159 }
 160
 161 function hook_status() {
 162         local zone=${1}
 163         local config=${2}
 164         shift 2
 165
 166         if ! device_exists ${zone}; then
 167                 error "Zone '${zone}' doesn't exist."
 168                 exit ${EXIT_ERROR}
 169         fi
 170
 171         zone_config_settings_read "${zone}" "${config}" ${HOOK_SETTINGS}
 172
 173         local status
 174         if zone_has_ip ${zone} ${ADDRESS}/${PREFIX}; then
 175                 status=${MSG_HOOK_UP}
 176         else
 177                 status=${MSG_HOOK_DOWN}
 178         fi
 179         cli_statusline 3 "${HOOK}" "${status}"
 180
 181         cli_print_fmt1 3 "IPv4 address" "${ADDRESS}/${PREFIX}"
 182         if [ -n "${GATEWAY}" ]; then
 183                 cli_print_fmt1 3 "Gateway" "${GATEWAY}"
 184         fi
 185         cli_space
 186
 187         exit ${EXIT_OK}
 188 }
 189