TunCtl

   1 #!/bin/sh
   2 #
   3 # OCF RA for tunctl(1) TUN/TAP device initialization
   4 #
   5 # Copyright (c) 2008,2009 Barton IT-Consulting
   6 # Copyright (c) 2004 SUSE LINUX AG, Lars Marowsky-Brée
   7 #                    All Rights Reserved.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of version 2 of the GNU General Public License as
  11 # published by the Free Software Foundation.
  12 #
  13 # This program is distributed in the hope that it would be useful, but
  14 # WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16 #
  17 # Further, this software is distributed without any warranty that it is
  18 # free of the rightful claim of any third person regarding infringement
  19 # or the like.  Any license provided herein, whether implied or
  20 # otherwise, applies only to this software file.  Patent licenses, if
  21 # any, provided herein do not apply to combinations of this program with
  22 # other software, or any other product whatsoever.
  23 #
  24 # You should have received a copy of the GNU General Public License
  25 # along with this program; if not, write the Free Software Foundation,
  26 # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  27 #
  28
  29 # Initialization:
  30 . ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
  31
  32 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  33
  34 meta_data() {
  35         cat <<END
  36 <?xml version="1.0"?>
  37 <!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
  38 <resource-agent name="TunCtl">
  39 <version>1.1</version>
  40
  41 <longdesc lang="en">
  42 OCF RA for tunctl(1) TUN/TAP device initialization.
  43 </longdesc>
  44 <shortdesc lang="en">TUN/TAP device initialization</shortdesc>
  45
  46 <parameters>
  47 <parameter name="if_name" unique="1">
  48 <shortdesc lang="en">Name of TUN/TAP interface</shortdesc>
  49 <content type="string" default="" />
  50 </parameter>
  51 <parameter name="if_owner" unique="1">
  52 <shortdesc lang="en">TUN/TAP interface owner</shortdesc>
  53 <content type="string" default="" />
  54 </parameter>
  55 <parameter name="host_ip" unique="1">
  56 <shortdesc lang="en">Host-side IP address</shortdesc>
  57 <content type="string" default="" />
  58 </parameter>
  59 <parameter name="host_netmask" unique="1">
  60 <shortdesc lang="en">Host-side netmask</shortdesc>
  61 <content type="string" default="" />
  62 </parameter>
  63 <parameter name="client_ip" unique="1">
  64 <shortdesc lang="en">Client-side IP address</shortdesc>
  65 <content type="string" default="" />
  66 </parameter>
  67 <parameter name="if_proxyarp" unique="1">
  68 <shortdesc lang="en">Interface for Proxy-ARP</shortdesc>
  69 <content type="string" default="" />
  70 </parameter>
  71 </parameters>
  72
  73 <actions>
  74 <action name="start" timeout="10" />
  75 <action name="stop" timeout="10" />
  76 <action name="monitor" timeout="10" interval="15" depth="0" start-delay="5" />
  77 <action name="meta-data" timeout="5" />
  78 <action name="verify-all" timeout="30" />
  79 </actions>
  80 </resource-agent>
  81 END
  82 }
  83
  84 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  85
  86 TunCtl_usage() {
  87         echo "usage: $0 {start|stop|monitor|validate-all|meta-data}"
  88 }
  89
  90 TunCtl_start() {
  91         tunctl -u "${OCF_RESKEY_if_owner:-root}" -t "$OCF_RESKEY_if_name"
  92         if [ $? -ne 0 ]; then
  93                 return $OCF_ERR_GENERIC
  94         fi
  95         ifconfig "$OCF_RESKEY_if_name" "$OCF_RESKEY_host_ip" \
  96          netmask "${OCF_RESKEY_host_netmask:-255.255.255.0}" up
  97         if [ $? -ne 0 ]; then
  98                 return $OCF_ERR_GENERIC
  99         fi
 100         echo 1 >/proc/sys/net/ipv4/ip_forward
 101         route add -host "$OCF_RESKEY_client_ip" dev "$OCF_RESKEY_if_name"
 102         if [ $? -ne 0 ]; then
 103                 return $OCF_ERR_GENERIC
 104         fi
 105         if [ -n "$OCF_RESKEY_if_proxyarp" ]; then
 106                 # Proxy ARP
 107                 echo 1 >/proc/sys/net/ipv4/conf/"$OCF_RESKEY_if_name"/proxy_arp
 108                 if [ $? -ne 0 ]; then
 109                         return $OCF_ERR_GENERIC
 110                 fi
 111                 arp -Ds "$OCF_RESKEY_client_ip" "$OCF_RESKEY_if_proxyarp" pub
 112                 if [ $? -ne 0 ]; then
 113                         return $OCF_ERR_GENERIC
 114                 fi
 115         fi
 116         return $OCF_SUCCESS
 117 }
 118
 119 TunCtl_stop() {
 120         if [ -n "$OCF_RESKEY_if_proxyarp" ]; then
 121                 # Proxy ARP
 122                 arp -d "$OCF_RESKEY_client_ip" -i "$OCF_RESKEY_if_proxyarp" pub
 123         fi
 124         ifconfig "$OCF_RESKEY_if_name" down >/dev/null 2>&1
 125         tunctl -d "$OCF_RESKEY_if_name"
 126         if [ $? -eq 0 ]; then
 127                 return $OCF_SUCCESS
 128         fi
 129         return $OCF_ERR_GENERIC
 130 }
 131
 132 TunCtl_monitor() {
 133         ip link show "$OCF_RESKEY_if_name" | grep "UP" >/dev/null 2>&1
 134         if [ $? -eq 0 ]; then
 135                 return $OCF_SUCCESS
 136         fi
 137         return $OCF_NOT_RUNNING
 138 }
 139
 140 TunCtl_validate() {
 141         if [ -z "$OCF_RESKEY_if_name" ]; then
 142                 return $OCF_ERR_ARGS
 143         fi
 144         if [ -z "$OCF_RESKEY_host_ip" ]; then
 145                 return $OCF_ERR_ARGS
 146         fi
 147         if [ -z "$OCF_RESKEY_client_ip" ]; then
 148                 return $OCF_ERR_ARGS
 149         fi
 150         return $OCF_SUCCESS
 151 }
 152
 153 case $__OCF_ACTION in
 154         meta-data)
 155                 meta_data
 156                 exit $OCF_SUCCESS
 157                 ;;
 158         start)
 159                 TunCtl_start
 160                 ;;
 161         stop)
 162                 TunCtl_stop
 163                 ;;
 164         monitor)
 165                 TunCtl_monitor
 166                 ;;
 167         validate-all)
 168                 TunCtl_validate
 169                 ;;
 170         usage|help)
 171                 TunCtl_usage
 172                 exit $OCF_SUCCESS
 173                 ;;
 174         *)
 175                 TunCtl_usage
 176                 exit $OCF_ERR_UNIMPLEMENTED
 177                 ;;
 178 esac
 179
 180 rc=$?
 181 ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
 182 exit $rc
 183
 184 # -eof-