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_CONFIG_SETTINGS="HOOK ADDRESS PREFIX GATEWAY"
  27
  28 hook_check_config_settings() {
  29         assert isset ADDRESS
  30         assert isinteger PREFIX
  31
  32         if [ ${PREFIX} -gt 30 ]; then
  33                 error "PREFIX is greater than 30."
  34                 exit ${EXIT_ERROR}
  35         fi
  36 }
  37
  38 hook_parse_cmdline() {
  39         local arg
  40
  41         while read -r arg; do
  42                 local key="$(cli_get_key "${arg}")"
  43                 local val="$(cli_get_val "${arg}")"
  44
  45                 case "${key}" in
  46                         address)
  47                                 if ! ipv4_is_valid "${val}"; then
  48                                         error "Invalid IPv4 address: ${val}"
  49                                         exit ${EXIT_CONF_ERROR}
  50                                 fi
  51
  52                                 ADDRESS="${val}"
  53                                 ;;
  54
  55                         prefix)
  56                                 if ! ipv4_prefix_is_valid "${val}"; then
  57                                         error "Invalid IPv4 prefix: ${val}"
  58                                         exit ${EXIT_CONF_ERROR}
  59                                 fi
  60
  61                                 PREFIX="${val}"
  62                                 ;;
  63
  64                         gateway)
  65                                 if ! ipv4_is_valid "${val}"; then
  66                                         error "Invalid IPv4 address for gateway: ${val}"
  67                                         exit ${EXIT_CONF_ERROR}
  68                                 fi
  69
  70                                 GATEWAY="${val}"
  71                                 ;;
  72
  73                         # Compatibility switches
  74                         netmask)
  75                                 if ! ipv4_netmask_is_valid "${val}"; then
  76                                         error "Invalid netmask: ${val}"
  77                                         exit ${EXIT_CONF_ERROR}
  78                                 fi
  79
  80                                 # The netmask will be converted into a prefix
  81                                 PREFIX="$(ipv4_netmask2prefix ${val})"
  82                                 ;;
  83
  84                         # Unknown switches
  85                         *)
  86                                 error "Unhandled argument: ${arg}"
  87                                 exit ${EXIT_CONF_ERROR}
  88                                 ;;
  89                 esac
  90         done <<< "$(args $@)"
  91
  92         if ! isset ADDRESS; then
  93                 error "You need to provide an IPv4 address"
  94                 exit ${EXIT_CONF_ERROR}
  95         fi
  96
  97         if ! isset PREFIX; then
  98                 error "You need to provide an IPv4 prefix"
  99                 exit ${EXIT_CONF_ERROR}
 100         fi
 101
 102         if zone_config_check_same_setting "${zone}" "ipv4-static" "ADDRESS" "${ADDRESS}"; then
 103                 error "An ipv4-static config with the same IPv4 address is already configured"
 104                 exit ${EXIT_CONF_ERROR}
 105         fi
 106
 107         if ! isset GATEWAY && zone_is_nonlocal "${zone}"; then
 108                 warning "You did not configure a gateway for a non-local zone"
 109         fi
 110 }
 111
 112 hook_new() {
 113         local zone="${1}"
 114         shift
 115
 116         assert zone_exists "${zone}"
 117
 118         if ! hook_parse_cmdline $@; then
 119                 # Return an error if the parsing of the cmd line fails
 120                 return ${EXIT_ERROR}
 121         fi
 122
 123         zone_config_settings_write "${zone}" "${HOOK}"
 124
 125         exit ${EXIT_OK}
 126 }
 127
 128 hook_up() {
 129         local zone=${1}
 130         local config=${2}
 131         shift 2
 132
 133         if ! device_exists ${zone}; then
 134                 error "Zone '${zone}' doesn't exist."
 135                 exit ${EXIT_ERROR}
 136         fi
 137
 138         zone_config_settings_read "${zone}" "${config}"
 139
 140         ip_address_add ${zone} ${ADDRESS}/${PREFIX}
 141
 142         # Save configuration
 143         db_set "${zone}/ipv4/type" "${HOOK}"
 144         db_set "${zone}/ipv4/local-ip-address" "${ADDRESS}/${PREFIX}"
 145         db_set "${zone}/ipv4/remote-ip-address" "${GATEWAY}"
 146         db_set "${zone}/ipv4/active" 1
 147
 148         routing_update ${zone} ipv4
 149         routing_default_update
 150
 151         exit ${EXIT_OK}
 152 }
 153
 154 hook_down() {
 155         local zone=${1}
 156         local config=${2}
 157         shift 2
 158
 159         if ! device_exists ${zone}; then
 160                 error "Zone '${zone}' doesn't exist."
 161                 exit ${EXIT_ERROR}
 162         fi
 163
 164         # Remove routing information from database.
 165         db_delete "${zone}/ipv4"
 166
 167         zone_config_settings_read "${zone}" "${config}"
 168
 169         ip_address_del ${zone} ${ADDRESS}/${PREFIX}
 170
 171         # Update routing tables.
 172         routing_default_update
 173
 174         exit ${EXIT_OK}
 175 }
 176
 177 hook_status() {
 178         local zone="${1}"
 179         assert isset zone
 180
 181         local config="${2}"
 182         assert isset config
 183
 184         shift 2
 185
 186         if ! device_exists ${zone}; then
 187                 error "Zone '${zone}' doesn't exist."
 188                 exit ${EXIT_ERROR}
 189         fi
 190
 191         zone_config_settings_read "${zone}" "${config}"
 192
 193         local status
 194         if zone_has_ip ${zone} ${ADDRESS}/${PREFIX}; then
 195                 status=${MSG_HOOK_UP}
 196         else
 197                 status=${MSG_HOOK_DOWN}
 198         fi
 199         cli_statusline 3 "${HOOK}" "${status}"
 200
 201         cli_print_fmt1 3 "IPv4 address" "${ADDRESS}/${PREFIX}"
 202         if [ -n "${GATEWAY}" ]; then
 203                 cli_print_fmt1 3 "Gateway" "${GATEWAY}"
 204         fi
 205         cli_space
 206
 207         exit ${EXIT_OK}
 208 }