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 ${EXIT_CONF_ERROR}
 100         fi
 101
 102         if ! isset GATEWAY && zone_is_nonlocal "${zone}"; then
 103                 warning "You did not configure a gateway for a non-local zone"
 104         fi
 105 }
 106
 107 hook_new() {
 108         local zone="${1}"
 109         shift
 110
 111         assert zone_exists "${zone}"
 112
 113         if ! hook_parse_cmdline $@; then
 114                 # Return an error if the parsing of the cmd line fails
 115                 return ${EXIT_ERROR}
 116         fi
 117
 118         zone_config_settings_write "${zone}" "${HOOK}"
 119
 120         exit ${EXIT_OK}
 121 }
 122
 123 hook_up() {
 124         local zone=${1}
 125         local config=${2}
 126         shift 2
 127
 128         if ! device_exists ${zone}; then
 129                 error "Zone '${zone}' doesn't exist."
 130                 exit ${EXIT_ERROR}
 131         fi
 132
 133         zone_config_settings_read "${zone}" "${config}"
 134
 135         ip_address_add ${zone} ${ADDRESS}/${PREFIX}
 136
 137         # Save configuration
 138         db_set "${zone}/ipv4/type" "${HOOK}"
 139         db_set "${zone}/ipv4/local-ip-address" "${ADDRESS}/${PREFIX}"
 140         db_set "${zone}/ipv4/remote-ip-address" "${GATEWAY}"
 141         db_set "${zone}/ipv4/active" 1
 142
 143         routing_update ${zone} ipv4
 144         routing_default_update
 145
 146         exit ${EXIT_OK}
 147 }
 148
 149 hook_down() {
 150         local zone=${1}
 151         local config=${2}
 152         shift 2
 153
 154         if ! device_exists ${zone}; then
 155                 error "Zone '${zone}' doesn't exist."
 156                 exit ${EXIT_ERROR}
 157         fi
 158
 159         # Remove routing information from database.
 160         db_delete "${zone}/ipv4"
 161
 162         zone_config_settings_read "${zone}" "${config}"
 163
 164         ip_address_del ${zone} ${ADDRESS}/${PREFIX}
 165
 166         # Update routing tables.
 167         routing_default_update
 168
 169         exit ${EXIT_OK}
 170 }
 171
 172 hook_status() {
 173         local zone="${1}"
 174         assert isset zone
 175
 176         local config="${2}"
 177         assert isset config
 178
 179         shift 2
 180
 181         if ! device_exists ${zone}; then
 182                 error "Zone '${zone}' doesn't exist."
 183                 exit ${EXIT_ERROR}
 184         fi
 185
 186         zone_config_settings_read "${zone}" "${config}"
 187
 188         local status
 189         if zone_has_ip ${zone} ${ADDRESS}/${PREFIX}; then
 190                 status=${MSG_HOOK_UP}
 191         else
 192                 status=${MSG_HOOK_DOWN}
 193         fi
 194         cli_statusline 3 "${HOOK}" "${status}"
 195
 196         cli_print_fmt1 3 "IPv4 address" "${ADDRESS}/${PREFIX}"
 197         if [ -n "${GATEWAY}" ]; then
 198                 cli_print_fmt1 3 "Gateway" "${GATEWAY}"
 199         fi
 200         cli_space
 201
 202         exit ${EXIT_OK}
 203 }