ACC SHELL
#! /bin/bash
#
# Copyright (c) 2007 SUSE LINUX Products GmbH, Germany.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA
#
# Authors: Marius Tomaschewski <mt@suse.de>
# Michal Ludvig <mludvig@suse.cz>
#
# The static ipip,gre,sit tunnel code extracted from main ifup script.
#
# $Id$
#
unset POSIXLY_CORRECT ; set +o posix # we're using non-posix bash features
usage () {
echo $@
echo "Usage: if{up,down,status}-tunnel [<config>] <interface> [-o <options>]"
echo ""
echo "Options are:"
echo " [on]boot : we are currently booting (or shutting down)"
echo " hotplug : we are handling a hotplug event"
echo " auto : alias for onboot"
echo " debug : be verbose"
echo ""
exit $R_USAGE
}
######################################################################
# change the working direcory and source some common files
#
R_INTERNAL=1 # internal error, e.g. no config or missing scripts
cd /etc/sysconfig/network || exit $R_INTERNAL
test -f ./config && . ./config
test -f scripts/functions && . scripts/functions || exit $R_INTERNAL
######################################################################
# check arguments and how we are called (in case of links)
#
SCRIPTNAME=${0##*/}
debug $*
ACTION=${SCRIPTNAME#if}
ACTION=${ACTION%%-*}
case "${ACTION}" in
up|status|down|check) ;;
*) usage
esac
case "$1" in ""|-h|*help*) usage; esac
CONFIG=$1
shift
if [ -n "$1" -a "$1" != "-o" ] ; then
INTERFACE=$1
else
INTERFACE=$CONFIG
fi
shift
test "$1" = "-o" && shift
OPTIONS="$@"
MODE=manual
while [ $# -gt 0 ]; do
case $1 in
boot|onboot) MODE=auto ;;
hotplug) MODE=auto ;;
auto) MODE=auto ;;
quiet) be_quiet_has_gone ;;
debug) DEBUG=yes ;;
*) debug unknown option $1 ;;
esac
shift
done
######################################################################
# check presence of configuration file and source it
#
if [ -f ifcfg-$CONFIG ] ; then
. ifcfg-$CONFIG
elif test "$ACTION" != down ; then
message "could not find configuration file ifcfg-$CONFIG"
exit $R_NOCONFIG
fi
######################################################################
# function adding a static ip tunnel
#
iptunnel_add ()
{
# Backwards compliance hack:
# TUNNEL_DEVICE is new since SL9.1/SLES9. Up to then,
# TUNNEL_LOCAL_INTERFACE was used in configurations.
if [ -z "$TUNNEL_DEVICE" ] ; then
TUNNEL_DEVICE=$TUNNEL_LOCAL_INTERFACE
fi
# Get IPv4 address of local tunnel endpoint
# in the case it wasn't set in the config file.
if [ -z "$TUNNEL_LOCAL_IPADDR" ] ; then
if [ -z "$TUNNEL_DEVICE" ]; then
logerror "set TUNNEL_LOCAL_IPADDR or TUNNEL_DEVICE"
return $R_USAGE
fi
TUNNEL_LOCAL_IPADDR=`is_iface_up $TUNNEL_DEVICE && \
get_ipv4address $TUNNEL_DEVICE`
if [ "$?" != 0 ] ; then
logerror "failed to get IPv4 address of $TUNNEL_DEVICE"
return $R_ERROR
fi
fi
# Create a new tunnel
MESSAGE=`ip tunnel add $INTERFACE mode "$TUNNEL" \
${TUNNEL_LOCAL_IPADDR:+local "$TUNNEL_LOCAL_IPADDR"} \
${TUNNEL_REMOTE_IPADDR:+remote "$TUNNEL_REMOTE_IPADDR"} \
${TUNNEL_TTL:+ttl "$TUNNEL_TTL"} $TUNNEL_OPTIONS 2>&1`
if [ $? != 0 ] ; then
logerror "failed to add tunnel $INTERFACE"
logerror "$MESSAGE"
return $R_ERROR
fi
# Check if tunnel link exists (needed?)
MESSAGE=`ip link show $INTERFACE 2>&1`
if [ $? != 0 ] ; then
logerror "failed to add tunnel $INTERFACE"
logerror "$MESSAGE"
logerror "(does it already exist with a different name?)"
return $R_ERROR
fi
case "$BOOTPROTO" in
6to4)
# convert IPv4 to IPv6
test -n "$TUNNEL_LOCAL_IPADDR_V6" ||
TUNNEL_LOCAL_IPADDR_V6=`printf "%s/16" $(convert_ipv4address_to_6to4 $TUNNEL_LOCAL_IPADDR)`
MESSAGE=`ip link set up dev $INTERFACE $LINK_OPTIONS 2>&1`
if [ $? != 0 ] ; then
logerror "failed to set up interface $INTERFACE"
logerror "$MESSAGE"
return $R_ERROR
fi
if [ -n "$MTU" ] ; then
MESSAGE=`ip link set $INTERFACE mtu $MTU 2>&1`
if [ $? !=0 ] ; then
logerror "failed to set MTU for interface $INTERFACE"
logerror "$MESSAGE"
return $R_ERROR
fi
fi
MESSAGE=`ip -6 addr add $TUNNEL_LOCAL_IPADDR_V6 dev $INTERFACE 2>&1`
if [ $? != 0 ] ; then
logerror "failed to add address $TUNNEL_LOCAL_IPADDR_V6 to" \
" interface $INTERFACE"
logerror "$MESSAGE"
return $R_ERROR
fi
;;
esac
# This message shuold be printed at the very end
message_if_not_run_from_rc "$BOOTPROTO tunnel $INTERFACE is configured"
return $R_SUCCESS
}
######################################################################
# function deleting a static ip tunnel
#
iptunnel_del ()
{
MESSAGE=`ip tunnel del $INTERFACE 2>&1`
if [ $? = 0 ] ; then
message_if_not_run_from_rc "tunnel $INTERFACE is removed"
return $R_SUCCESS
else
logerror "failed to delete tunnel $INTERFACE"
logerror "$MESSAGE"
return $R_ERROR
fi
}
######################################################################
# function returning the path of tunctl utility (in /usr on 10.3)
tunctl_bin ()
{
for tunctl in /bin/tunctl /usr/bin/tunctl ; do
test -x "$tunctl" && echo "$tunctl"
done
echo ""
}
######################################################################
# now do what has to be done
#
RETVAL=$R_SUCCESS
case $ACTION in
up)
case "$INTERFACETYPE" in
sit)
case "$BOOTPROTO" in
static|6to4)
/sbin/modprobe -q sit
case $INTERFACE in
sit0) ;;
*)
printf " %-9s " "$INTERFACE"
iptunnel_add
RETVAL=$?
;;
esac
;;
*)
logerror "unsupported tunnel boot protocol $BOOTPROTO"
RETVAL=$R_USAGE
;;
esac
;;
gre|ipip)
case "$BOOTPROTO" in
static)
case "$INTERFACETYPE" in
gre) /sbin/modprobe -q ip_gre ;;
ipip) /sbin/modprobe -q ipip ;;
esac
case $INTERFACE in
gre0|tunl0) ;;
*)
printf " %-9s " "$INTERFACE"
iptunnel_add
RETVAL=$?
;;
esac
;;
*)
logerror "unsupported tunnel boot protocol $BOOTPROTO"
RETVAL=$R_USAGE
;;
esac
;;
tun|tap)
if [ -d "/sys/class/net/$INTERFACE" ] ; then
owner=`cat /sys/class/net/$INTERFACE/owner 2>/dev/null`
group=`cat /sys/class/net/$INTERFACE/group 2>/dev/null`
debug "Tunnel interface $INTERFACE exists ($owner:$group)"
info="Already exists"
if [ -n "$owner" ] ; then
info="$info, owned by uid $owner"
fi
if [ "x$group" != "x-1" ] ; then
info="$info, gid $group"
fi
printf " %-9s %s\n" "$INTERFACE" "$info"
elif [ "$TUNNEL_SET_PERSISTENT" != no ] ; then
# we use a persistent tunnel by default
case "$INTERFACETYPE" in
tap) TUNCTL_TYPE_ARG="-p" ;;
tun) TUNCTL_TYPE_ARG="-n" ;;
esac
tunctl=$(tunctl_bin)
if [ -z "$tunctl" ] ; then
logerror "tunctl not available -- install tunctl package"
exit $R_ERROR
fi
printf " %-9s " "$INTERFACE"
$tunctl -t $INTERFACE ${TUNCTL_TYPE_ARG} \
${TUNNEL_SET_OWNER:+-u "$TUNNEL_SET_OWNER"} \
${TUNNEL_SET_GROUP:+-g "$TUNNEL_SET_GROUP"} \
2>&1 || exit $R_NODEV
else
logerror "non-persistent tunnels not supported yet"
exit $R_NODEV
fi
;;
esac
;;
down)
if is_iface_up $INTERFACE ; then
ip link set dev $INTERFACE down
fi
case "$INTERFACETYPE" in
tun|tap)
if [ -d /sys/class/net/$INTERFACE ] ; then
tunctl=$(tunctl_bin)
if [ -z "$tunctl" ] ; then
logerror "tunctl not available -- install tunctl or uml-utilities"
exit $R_ERROR
fi
printf " %-9s " "$INTERFACE"
$tunctl -d $INTERFACE 2>&1 || RETVAL=$R_ERROR
fi
;;
sit|gre|ipip)
if [ -d /sys/class/net/$INTERFACE ] ; then
case $INTERFACE in
sit0|gre0|tunl0) ;;
*)
printf " %-9s " "$INTERFACE"
iptunnel_del
RETVAL=$?
;;
esac
fi
;;
esac
;;
status)
if is_iface_up $INTERFACE ; then
: ip addr show $INTERFACE
else
RETVAL=$R_NOTRUNNING
fi
;;
check)
: check action not implemented for $INTERFACE
;;
esac
exit $RETVAL
ACC SHELL 2018