src/helpers/ipsec-updown

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2017  IPFire Network Development Team                         #
   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 LOG_DISABLE_STDOUT="true"
  23
  24 . /usr/lib/network/functions
  25
  26 # Read network settings
  27 network_settings_read
  28
  29 # Make sure we are called by strongSwan
  30 assert isset PLUTO_VERSION
  31
  32 if enabled DEBUG; then
  33         while read line; do
  34                 [[ ${line} =~ ^PLUTO_ ]] || continue
  35                 log DEBUG "  ${line}"
  36         done <<< "$(printenv | sort)"
  37 fi
  38
  39 CONNECTION="${PLUTO_CONNECTION}"
  40
  41 if ! ipsec_connection_read_config "${CONNECTION}"; then
  42         log ERROR "Could not read configuration for ${CONNECTION}"
  43         exit ${EXIT_ERROR}
  44 fi
  45
  46 # Interface name for this IPsec connection
  47 case "${MODE}" in
  48         gre-*|vti)
  49                 INTERFACE="ipsec-${CONNECTION}"
  50                 ;;
  51 esac
  52
  53 log DEBUG "${0} called for ${CONNECTION}: ${PLUTO_VERB}"
  54
  55 case "${PLUTO_VERB}" in
  56         up-client|up-client-v6|up-host|up-host-v6)
  57                 if isset ZONE && zone_exists "${ZONE}"; then
  58                         # Bring up the zone if not done, yet
  59                         if ! zone_is_up "${ZONE}"; then
  60                                 zone_up "${ZONE}"
  61                         fi
  62
  63                         # Update peer and local address
  64                         if ! ip_tunnel_change "${ZONE}" --remote="${PLUTO_PEER}" --local="${PLUTO_ME}"; then
  65                                 return ${EXIT_ERROR}
  66                         fi
  67
  68                         # Set keys for VTI devices
  69                         if device_is_vti6 "${ZONE}" || device_is_vti "${ZONE}"; then
  70                                 ip_tunnel_change_keys "${ZONE}" \
  71                                         --ikey="${PLUTO_MARK_IN%/*}" \
  72                                         --okey="${PLUTO_MARK_OUT%/*}"
  73                         fi
  74                 fi
  75
  76                 #Get sources IP for routes
  77                 SRC_IP=($(ip_get_assigned_addresses_from_net \
  78                         "${PLUTO_MY_CLIENT}" "permanent"))
  79
  80                 # Set routes if we have a source IP.
  81                 # If not the machine does not has a leg on the net
  82                 # and we can go on without routes.
  83                 if isset SRC_IP; then
  84                         # We take the lowest source IP we found,
  85                         # which is ugly because the value is unpredictable.
  86                         SRC_IP=${SRC_IP[0]}
  87
  88                         if isset INTERFACE; then
  89                                 if ! cmd ip route add \
  90                                         "${PLUTO_PEER_CLIENT}" \
  91                                         dev "${INTERFACE}" \
  92                                         src "${SRC_IP}"; then
  93                                                 log ERROR \
  94                                                         "Could not set routes for ${PLUTO_PEER_CLIENT}"
  95                                 fi
  96                         else
  97                                 # Get the device which we use to peer with the other site.
  98                                 ME_DEVICE="$(device_get_by_assigned_ip_address "${PLUTO_ME}")"
  99
 100                                 # We can only go on if we found a device.
 101                                 if isset ME_DEVICE; then
 102                                         if ! cmd ip route add \
 103                                                 "${PLUTO_PEER_CLIENT}" \
 104                                                 dev "${ME_DEVICE}" \
 105                                                 proto static \
 106                                                 src "${SRC_IP}" \
 107                                                 table 220; then
 108                                                         log ERROR \
 109                                                                 "Could not set routes for ${PLUTO_PEER_CLIENT}"
 110                                         fi
 111                                 else
 112                                         log ERROR "Could not get device for ${PLUTO_ME}"
 113                                 fi
 114                         fi
 115                 fi
 116                 ;;
 117
 118         down-client|down-client-v6|down-host|down-host-v6)
 119                 # Remove routes
 120                 cmd ip route del "${PLUTO_PEER_CLIENT}"
 121                 ;;
 122 esac
 123
 124 exit ${EXIT_OK}