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 <longdesc lang="en">Name of TUN/TAP interface</longdesc>
  49 <shortdesc lang="en">Name of TUN/TAP interface</shortdesc>
  50 <content type="string" default="" />
  51 </parameter>
  52 <parameter name="if_owner" unique="1">
  53 <longdesc lang="en">TUN/TAP interface owner</longdesc>
  54 <shortdesc lang="en">TUN/TAP interface owner</shortdesc>
  55 <content type="string" default="" />
  56 </parameter>
  57 <parameter name="host_ip" unique="1">
  58 <longdesc lang="en">Host-side IP address</longdesc>
  59 <shortdesc lang="en">Host-side IP address</shortdesc>
  60 <content type="string" default="" />
  61 </parameter>
  62 <parameter name="host_netmask" unique="1">
  63 <longdesc lang="en">Host-side netmask</longdesc>
  64 <shortdesc lang="en">Host-side netmask</shortdesc>
  65 <content type="string" default="" />
  66 </parameter>
  67 <parameter name="client_ip" unique="1">
  68 <longdesc lang="en">Client-side IP address</longdesc>
  69 <shortdesc lang="en">Client-side IP address</shortdesc>
  70 <content type="string" default="" />
  71 </parameter>
  72 <parameter name="if_proxyarp" unique="1">
  73 <longdesc lang="en">Interface for Proxy-ARP</longdesc>
  74 <shortdesc lang="en">Interface for Proxy-ARP</shortdesc>
  75 <content type="string" default="" />
  76 </parameter>
  77 </parameters>
  78
  79 <actions>
  80 <action name="start" timeout="10" />
  81 <action name="stop" timeout="10" />
  82 <action name="monitor" timeout="10" interval="15" depth="0" start-delay="5" />
  83 <action name="meta-data" timeout="5" />
  84 <action name="validate-all" timeout="30" />
  85 </actions>
  86 </resource-agent>
  87 END
  88 }
  89
  90 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  91
  92 TunCtl_usage() {
  93         echo "usage: $0 {start|stop|monitor|validate-all|meta-data}"
  94 }
  95
  96 TunCtl_start() {
  97         tunctl -u "${OCF_RESKEY_if_owner:-root}" -t "$OCF_RESKEY_if_name"
  98         if [ $? -ne 0 ]; then
  99                 return $OCF_ERR_GENERIC
 100         fi
 101         ifconfig "$OCF_RESKEY_if_name" "$OCF_RESKEY_host_ip" \
 102          netmask "${OCF_RESKEY_host_netmask:-255.255.255.0}" up
 103         if [ $? -ne 0 ]; then
 104                 return $OCF_ERR_GENERIC
 105         fi
 106         echo 1 >/proc/sys/net/ipv4/ip_forward
 107         route add -host "$OCF_RESKEY_client_ip" dev "$OCF_RESKEY_if_name"
 108         if [ $? -ne 0 ]; then
 109                 return $OCF_ERR_GENERIC
 110         fi
 111         if [ -n "$OCF_RESKEY_if_proxyarp" ]; then
 112                 # Proxy ARP
 113                 echo 1 >/proc/sys/net/ipv4/conf/"$OCF_RESKEY_if_name"/proxy_arp
 114                 if [ $? -ne 0 ]; then
 115                         return $OCF_ERR_GENERIC
 116                 fi
 117                 arp -Ds "$OCF_RESKEY_client_ip" "$OCF_RESKEY_if_proxyarp" pub
 118                 if [ $? -ne 0 ]; then
 119                         return $OCF_ERR_GENERIC
 120                 fi
 121         fi
 122         return $OCF_SUCCESS
 123 }
 124
 125 TunCtl_stop() {
 126         if [ -n "$OCF_RESKEY_if_proxyarp" ]; then
 127                 # Proxy ARP
 128                 arp -d "$OCF_RESKEY_client_ip" -i "$OCF_RESKEY_if_proxyarp" pub
 129         fi
 130         ifconfig "$OCF_RESKEY_if_name" down >/dev/null 2>&1
 131         tunctl -d "$OCF_RESKEY_if_name"
 132         if [ $? -eq 0 ]; then
 133                 return $OCF_SUCCESS
 134         fi
 135         return $OCF_ERR_GENERIC
 136 }
 137
 138 TunCtl_monitor() {
 139         ip link show "$OCF_RESKEY_if_name" | grep "UP" >/dev/null 2>&1
 140         if [ $? -eq 0 ]; then
 141                 return $OCF_SUCCESS
 142         fi
 143         return $OCF_NOT_RUNNING
 144 }
 145
 146 TunCtl_validate() {
 147         if [ -z "$OCF_RESKEY_if_name" ]; then
 148                 return $OCF_ERR_ARGS
 149         fi
 150         if [ -z "$OCF_RESKEY_host_ip" ]; then
 151                 return $OCF_ERR_ARGS
 152         fi
 153         if [ -z "$OCF_RESKEY_client_ip" ]; then
 154                 return $OCF_ERR_ARGS
 155         fi
 156         return $OCF_SUCCESS
 157 }
 158
 159 case $__OCF_ACTION in
 160         meta-data)
 161                 meta_data
 162                 exit $OCF_SUCCESS
 163                 ;;
 164         start)
 165                 TunCtl_start
 166                 ;;
 167         stop)
 168                 TunCtl_stop
 169                 ;;
 170         monitor)
 171                 TunCtl_monitor
 172                 ;;
 173         validate-all)
 174                 TunCtl_validate
 175                 ;;
 176         usage|help)
 177                 TunCtl_usage
 178                 exit $OCF_SUCCESS
 179                 ;;
 180         *)
 181                 TunCtl_usage
 182                 exit $OCF_ERR_UNIMPLEMENTED
 183                 ;;
 184 esac
 185
 186 rc=$?
 187 ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
 188 exit $rc
 189
 190 # -eof-