add splitting vpn configuration
This commit is contained in:
Felix Van der Jeugt
parent
bf1e52fb94
commit
f1fffbf07e
19
root/etc/vpnc/default.conf
Executable file
19
root/etc/vpnc/default.conf
Executable file
@ -0,0 +1,19 @@
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# example vpnc configuration file
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# see vpnc --long-help for details
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#Interface name tun0
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#IKE DH Group dh2
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#Perfect Forward Secrecy nopfs
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# You may replace this script with something better
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#Script /etc/vpnc/vpnc-script
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# Enable this option for NAT traversal
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#UDP Encapsulate
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IPSec gateway rtrvpn.ugent.be
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IPSec ID ipsecclient
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IPSec secret cisco123
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Xauth username fvdrjeug
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Xauth password 3IdFdYiyxxNXlj3V
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#Script /etc/vpnc/router-wrapper
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19
root/etc/vpnc/split.conf
Executable file
19
root/etc/vpnc/split.conf
Executable file
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# example vpnc configuration file
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# see vpnc --long-help for details
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#Interface name tun0
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#IKE DH Group dh2
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#Perfect Forward Secrecy nopfs
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# You may replace this script with something better
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Script /etc/vpnc/vpnc-split-script
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# Enable this option for NAT traversal
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#UDP Encapsulate
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IPSec gateway rtrvpn.ugent.be
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IPSec ID ipsecclient
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IPSec secret cisco123
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Xauth username fvdrjeug
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Xauth password 3IdFdYiyxxNXlj3V
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#Script /etc/vpnc/router-wrapper
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805
root/etc/vpnc/vpnc-script
Executable file
805
root/etc/vpnc/vpnc-script
Executable file
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#!/bin/sh
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#
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# Originally part of vpnc source code:
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# © 2005-2012 Maurice Massar, Jörg Mayer, Antonio Borneo et al.
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# © 2009-2012 David Woodhouse <dwmw2@infradead.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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################
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#
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# List of parameters passed through environment
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#* reason -- why this script was called, one of: pre-init connect disconnect reconnect
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#* VPNGATEWAY -- vpn gateway address (always present)
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#* TUNDEV -- tunnel device (always present)
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#* INTERNAL_IP4_ADDRESS -- address (always present)
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#* INTERNAL_IP4_MTU -- mtu (often unset)
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#* INTERNAL_IP4_NETMASK -- netmask (often unset)
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#* INTERNAL_IP4_NETMASKLEN -- netmask length (often unset)
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#* INTERNAL_IP4_NETADDR -- address of network (only present if netmask is set)
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#* INTERNAL_IP4_DNS -- list of dns servers
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#* INTERNAL_IP4_NBNS -- list of wins servers
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#* INTERNAL_IP6_ADDRESS -- IPv6 address
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#* INTERNAL_IP6_NETMASK -- IPv6 netmask
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#* INTERNAL_IP6_DNS -- IPv6 list of dns servers
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#* CISCO_DEF_DOMAIN -- default domain name
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#* CISCO_BANNER -- banner from server
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#* CISCO_SPLIT_INC -- number of networks in split-network-list
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#* CISCO_SPLIT_INC_%d_ADDR -- network address
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#* CISCO_SPLIT_INC_%d_MASK -- subnet mask (for example: 255.255.255.0)
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#* CISCO_SPLIT_INC_%d_MASKLEN -- subnet masklen (for example: 24)
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#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0)
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#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0)
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#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0)
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#* CISCO_IPV6_SPLIT_INC -- number of networks in IPv6 split-network-list
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#* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address
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#* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen
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# FIXMEs:
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# Section A: route handling
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# 1) The 3 values CISCO_SPLIT_INC_%d_PROTOCOL/SPORT/DPORT are currently being ignored
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# In order to use them, we'll probably need os specific solutions
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# * Linux: iptables -t mangle -I PREROUTING <conditions> -j ROUTE --oif $TUNDEV
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# This would be an *alternative* to changing the routes (and thus 2) and 3)
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# shouldn't be relevant at all)
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# 2) There are two different functions to set routes: generic routes and the
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# default route. Why isn't the defaultroute handled via the generic route case?
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# 3) In the split tunnel case, all routes but the default route might get replaced
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# without getting restored later. We should explicitely check and save them just
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# like the defaultroute
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# 4) Replies to a dhcp-server should never be sent into the tunnel
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# Section B: Split DNS handling
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# 1) Maybe dnsmasq can do something like that
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# 2) Parse dns packets going out via tunnel and redirect them to original dns-server
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#env | sort
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#set -x
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# =========== script (variable) setup ====================================
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PATH=/sbin:/usr/sbin:$PATH
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OS="`uname -s`"
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HOOKS_DIR=/etc/vpnc
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DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute
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RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup
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SCRIPTNAME=`basename $0`
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# some systems, eg. Darwin & FreeBSD, prune /var/run on boot
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if [ ! -d "/var/run/vpnc" ]; then
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mkdir -p /var/run/vpnc
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[ -x /sbin/restorecon ] && /sbin/restorecon /var/run/vpnc
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fi
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# stupid SunOS: no blubber in /usr/local/bin ... (on stdout)
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IPROUTE="`which ip 2> /dev/null | grep '^/'`"
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if ifconfig --help 2>&1 | grep BusyBox > /dev/null; then
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ifconfig_syntax_inet=""
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else
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ifconfig_syntax_inet="inet"
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fi
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if [ "$OS" = "Linux" ]; then
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ifconfig_syntax_ptp="pointopoint"
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route_syntax_gw="gw"
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route_syntax_del="del"
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route_syntax_netmask="netmask"
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else
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ifconfig_syntax_ptp=""
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route_syntax_gw=""
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route_syntax_del="delete"
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route_syntax_netmask="-netmask"
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fi
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if [ "$OS" = "SunOS" ]; then
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route_syntax_interface="-interface"
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ifconfig_syntax_ptpv6="$INTERNAL_IP6_ADDRESS"
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else
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route_syntax_interface=""
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ifconfig_syntax_ptpv6=""
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fi
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if [ -r /etc/openwrt_release ] && [ -n "$OPENWRT_INTERFACE" ]; then
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. /etc/functions.sh
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include /lib/network
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MODIFYRESOLVCONF=modify_resolvconf_openwrt
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RESTORERESOLVCONF=restore_resolvconf_openwrt
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elif [ -x /usr/sbin/resolvconf ] && [ "$OS" != "FreeBSD" ]; then # Optional tool on Debian, Ubuntu, Gentoo - but not FreeBSD, it seems to work different
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MODIFYRESOLVCONF=modify_resolvconf_manager
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RESTORERESOLVCONF=restore_resolvconf_manager
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elif [ -x /sbin/netconfig ]; then # tool on Suse after 11.1
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MODIFYRESOLVCONF=modify_resolvconf_suse_netconfig
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RESTORERESOLVCONF=restore_resolvconf_suse_netconfig
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elif [ -x /sbin/modify_resolvconf ]; then # Mandatory tool on Suse earlier than 11.1
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MODIFYRESOLVCONF=modify_resolvconf_suse
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RESTORERESOLVCONF=restore_resolvconf_suse
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elif [ -x /usr/sbin/unbound-control ] && /usr/sbin/unbound-control status > /dev/null 2>&1; then
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MODIFYRESOLVCONF=modify_resolvconf_unbound
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RESTORERESOLVCONF=restore_resolvconf_unbound
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else # Generic for any OS
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MODIFYRESOLVCONF=modify_resolvconf_generic
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RESTORERESOLVCONF=restore_resolvconf_generic
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fi
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# =========== script hooks =================================================
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run_hooks() {
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HOOK="$1"
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if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then
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for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
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[ -f $script ] && . $script
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done
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fi
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}
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# =========== tunnel interface handling ====================================
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do_ifconfig() {
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if [ -n "$INTERNAL_IP4_MTU" ]; then
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MTU=$INTERNAL_IP4_MTU
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elif [ -n "$IPROUTE" ]; then
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MTUDEV=`$IPROUTE route get "$VPNGATEWAY" | sed -ne 's/^.*dev \([a-z0-9]*\).*$/\1/p'`
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MTU=`$IPROUTE link show "$MTUDEV" | sed -ne 's/^.*mtu \([[:digit:]]\+\).*$/\1/p'`
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if [ -n "$MTU" ]; then
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MTU=`expr $MTU - 88`
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fi
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fi
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if [ -z "$MTU" ]; then
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MTU=1412
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fi
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# Point to point interface require a netmask of 255.255.255.255 on some systems
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if [ -n "$IPROUTE" ]; then
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$IPROUTE link set dev "$TUNDEV" up mtu "$MTU"
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$IPROUTE addr add "$INTERNAL_IP4_ADDRESS/32" peer "$INTERNAL_IP4_ADDRESS" dev "$TUNDEV"
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else
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ifconfig "$TUNDEV" ${ifconfig_syntax_inet} "$INTERNAL_IP4_ADDRESS" $ifconfig_syntax_ptp "$INTERNAL_IP4_ADDRESS" netmask 255.255.255.255 mtu ${MTU} up
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fi
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if [ -n "$INTERNAL_IP4_NETMASK" ]; then
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set_network_route $INTERNAL_IP4_NETADDR $INTERNAL_IP4_NETMASK $INTERNAL_IP4_NETMASKLEN
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fi
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# If the netmask is provided, it contains the address _and_ netmask
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if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
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INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
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fi
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if [ -n "$INTERNAL_IP6_NETMASK" ]; then
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if [ -n "$IPROUTE" ]; then
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$IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV
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else
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# Unlike for Legacy IP, we don't specify the dest_address
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# here on *BSD. OpenBSD for one will refuse to accept
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# incoming packets to that address if we do.
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# OpenVPN does the same (gives dest_address for Legacy IP
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# but not for IPv6).
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# Only Solaris needs it; hence $ifconfig_syntax_ptpv6
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ifconfig "$TUNDEV" inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up
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fi
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fi
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}
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destroy_tun_device() {
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case "$OS" in
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NetBSD|OpenBSD) # and probably others...
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ifconfig "$TUNDEV" destroy
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;;
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FreeBSD)
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ifconfig "$TUNDEV" destroy > /dev/null 2>&1 &
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;;
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esac
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}
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# =========== route handling ====================================
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if [ -n "$IPROUTE" ]; then
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fix_ip_get_output () {
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sed -e 's/ /\n/g' | \
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sed -ne '1p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p}'
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}
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set_vpngateway_route() {
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$IPROUTE route add `$IPROUTE route get "$VPNGATEWAY" | fix_ip_get_output`
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$IPROUTE route flush cache
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}
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del_vpngateway_route() {
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$IPROUTE route $route_syntax_del "$VPNGATEWAY"
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$IPROUTE route flush cache
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}
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set_default_route() {
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$IPROUTE route | grep '^default' | fix_ip_get_output > "$DEFAULT_ROUTE_FILE"
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$IPROUTE route replace default dev "$TUNDEV"
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$IPROUTE route flush cache
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}
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set_network_route() {
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NETWORK="$1"
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NETMASK="$2"
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NETMASKLEN="$3"
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$IPROUTE route replace "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
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$IPROUTE route flush cache
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}
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reset_default_route() {
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if [ -s "$DEFAULT_ROUTE_FILE" ]; then
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$IPROUTE route replace `cat "$DEFAULT_ROUTE_FILE"`
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$IPROUTE route flush cache
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rm -f -- "$DEFAULT_ROUTE_FILE"
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fi
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}
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del_network_route() {
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NETWORK="$1"
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NETMASK="$2"
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NETMASKLEN="$3"
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$IPROUTE route $route_syntax_del "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
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$IPROUTE route flush cache
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}
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set_ipv6_default_route() {
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# We don't save/restore IPv6 default route; just add a higher-priority one.
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$IPROUTE -6 route add default dev "$TUNDEV" metric 1
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$IPROUTE -6 route flush cache
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}
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set_ipv6_network_route() {
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NETWORK="$1"
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NETMASKLEN="$2"
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$IPROUTE -6 route replace "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
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$IPROUTE route flush cache
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}
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reset_ipv6_default_route() {
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$IPROUTE -6 route del default dev "$TUNDEV"
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$IPROUTE route flush cache
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}
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del_ipv6_network_route() {
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NETWORK="$1"
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NETMASKLEN="$2"
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$IPROUTE -6 route del "$NETWORK/$NETMASKLEN" dev "$TUNDEV"
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$IPROUTE -6 route flush cache
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}
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else # use route command
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get_default_gw() {
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# isn't -n supposed to give --numeric output?
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# apperently not...
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# Get rid of lines containing IPv6 addresses (':')
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netstat -r -n | awk '/:/ { next; } /^(default|0\.0\.0\.0)/ { print $2; }'
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}
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set_vpngateway_route() {
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route add -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`"
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}
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del_vpngateway_route() {
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route $route_syntax_del -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`"
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}
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set_default_route() {
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DEFAULTGW="`get_default_gw`"
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echo "$DEFAULTGW" > "$DEFAULT_ROUTE_FILE"
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route $route_syntax_del default $route_syntax_gw "$DEFAULTGW"
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route add default $route_syntax_gw "$INTERNAL_IP4_ADDRESS" $route_syntax_interface
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}
|
||||||
|
|
||||||
|
set_network_route() {
|
||||||
|
NETWORK="$1"
|
||||||
|
NETMASK="$2"
|
||||||
|
NETMASKLEN="$3"
|
||||||
|
del_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
|
||||||
|
route add -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$INTERNAL_IP4_ADDRESS" $route_syntax_interface
|
||||||
|
}
|
||||||
|
|
||||||
|
reset_default_route() {
|
||||||
|
if [ -s "$DEFAULT_ROUTE_FILE" ]; then
|
||||||
|
route $route_syntax_del default $route_syntax_gw "`get_default_gw`" $route_syntax_interface
|
||||||
|
route add default $route_syntax_gw `cat "$DEFAULT_ROUTE_FILE"`
|
||||||
|
rm -f -- "$DEFAULT_ROUTE_FILE"
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
del_network_route() {
|
||||||
|
case "$OS" in
|
||||||
|
Linux|NetBSD|OpenBSD|Darwin|SunOS) # and probably others...
|
||||||
|
# routes are deleted automatically on device shutdown
|
||||||
|
return
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
NETWORK="$1"
|
||||||
|
NETMASK="$2"
|
||||||
|
NETMASKLEN="$3"
|
||||||
|
route $route_syntax_del -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$INTERNAL_IP4_ADDRESS"
|
||||||
|
}
|
||||||
|
|
||||||
|
set_ipv6_default_route() {
|
||||||
|
route add -inet6 default "$INTERNAL_IP6_ADDRESS" $route_syntax_interface
|
||||||
|
}
|
||||||
|
|
||||||
|
set_ipv6_network_route() {
|
||||||
|
NETWORK="$1"
|
||||||
|
NETMASK="$2"
|
||||||
|
route add -inet6 -net "$NETWORK/$NETMASK" "$INTERNAL_IP6_ADDRESS" $route_syntax_interface
|
||||||
|
:
|
||||||
|
}
|
||||||
|
|
||||||
|
reset_ipv6_default_route() {
|
||||||
|
route $route_syntax_del -inet6 default "$INTERNAL_IP6_ADDRESS"
|
||||||
|
:
|
||||||
|
}
|
||||||
|
|
||||||
|
del_ipv6_network_route() {
|
||||||
|
NETWORK="$1"
|
||||||
|
NETMASK="$2"
|
||||||
|
route $route_syntax_del -inet6 "$NETWORK/$NETMASK" "$INTERNAL_IP6_ADDRESS"
|
||||||
|
:
|
||||||
|
}
|
||||||
|
|
||||||
|
fi
|
||||||
|
|
||||||
|
# =========== resolv.conf handling ====================================
|
||||||
|
|
||||||
|
# =========== resolv.conf handling for any OS =========================
|
||||||
|
|
||||||
|
modify_resolvconf_generic() {
|
||||||
|
grep '^#@VPNC_GENERATED@' /etc/resolv.conf > /dev/null 2>&1 || cp -- /etc/resolv.conf "$RESOLV_CONF_BACKUP"
|
||||||
|
NEW_RESOLVCONF="#@VPNC_GENERATED@ -- this file is generated by vpnc
|
||||||
|
# and will be overwritten by vpnc
|
||||||
|
# as long as the above mark is intact"
|
||||||
|
|
||||||
|
# Remember the original value of CISCO_DEF_DOMAIN we need it later
|
||||||
|
CISCO_DEF_DOMAIN_ORIG="$CISCO_DEF_DOMAIN"
|
||||||
|
# Don't step on INTERNAL_IP4_DNS value, use a temporary variable
|
||||||
|
INTERNAL_IP4_DNS_TEMP="$INTERNAL_IP4_DNS"
|
||||||
|
exec 6< "$RESOLV_CONF_BACKUP"
|
||||||
|
while read LINE <&6 ; do
|
||||||
|
case "$LINE" in
|
||||||
|
nameserver*)
|
||||||
|
if [ -n "$INTERNAL_IP4_DNS_TEMP" ]; then
|
||||||
|
read ONE_NAMESERVER INTERNAL_IP4_DNS_TEMP <<-EOF
|
||||||
|
$INTERNAL_IP4_DNS_TEMP
|
||||||
|
EOF
|
||||||
|
LINE="nameserver $ONE_NAMESERVER"
|
||||||
|
else
|
||||||
|
LINE=""
|
||||||
|
fi
|
||||||
|
;;
|
||||||
|
search*)
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN" ]; then
|
||||||
|
LINE="$LINE $CISCO_DEF_DOMAIN"
|
||||||
|
CISCO_DEF_DOMAIN=""
|
||||||
|
fi
|
||||||
|
;;
|
||||||
|
domain*)
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN" ]; then
|
||||||
|
LINE="domain $CISCO_DEF_DOMAIN"
|
||||||
|
CISCO_DEF_DOMAIN=""
|
||||||
|
fi
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
NEW_RESOLVCONF="$NEW_RESOLVCONF
|
||||||
|
$LINE"
|
||||||
|
done
|
||||||
|
exec 6<&-
|
||||||
|
|
||||||
|
for i in $INTERNAL_IP4_DNS_TEMP ; do
|
||||||
|
NEW_RESOLVCONF="$NEW_RESOLVCONF
|
||||||
|
nameserver $i"
|
||||||
|
done
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN" ]; then
|
||||||
|
NEW_RESOLVCONF="$NEW_RESOLVCONF
|
||||||
|
search $CISCO_DEF_DOMAIN"
|
||||||
|
fi
|
||||||
|
echo "$NEW_RESOLVCONF" > /etc/resolv.conf
|
||||||
|
|
||||||
|
if [ "$OS" = "Darwin" ]; then
|
||||||
|
case "`uname -r`" in
|
||||||
|
# Skip for pre-10.4 systems
|
||||||
|
4.*|5.*|6.*|7.*)
|
||||||
|
;;
|
||||||
|
# 10.4 and later require use of scutil for DNS to work properly
|
||||||
|
*)
|
||||||
|
OVERRIDE_PRIMARY=""
|
||||||
|
if [ -n "$CISCO_SPLIT_INC" ]; then
|
||||||
|
if [ $CISCO_SPLIT_INC -lt 1 ]; then
|
||||||
|
# Must override for correct default route
|
||||||
|
# Cannot use multiple DNS matching in this case
|
||||||
|
OVERRIDE_PRIMARY='d.add OverridePrimary # 1'
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
# Uncomment the following if/fi pair to use multiple
|
||||||
|
# DNS matching when available. When multiple DNS matching
|
||||||
|
# is present, anything reading the /etc/resolv.conf file
|
||||||
|
# directly will probably not work as intended.
|
||||||
|
#if [ -z "$CISCO_DEF_DOMAIN_ORIG" ]; then
|
||||||
|
# Cannot use multiple DNS matching without a domain
|
||||||
|
OVERRIDE_PRIMARY='d.add OverridePrimary # 1'
|
||||||
|
#fi
|
||||||
|
scutil >/dev/null 2>&1 <<-EOF
|
||||||
|
open
|
||||||
|
d.init
|
||||||
|
d.add ServerAddresses * $INTERNAL_IP4_DNS
|
||||||
|
set State:/Network/Service/$TUNDEV/DNS
|
||||||
|
d.init
|
||||||
|
# next line overrides the default gateway and breaks split routing
|
||||||
|
# d.add Router $INTERNAL_IP4_ADDRESS
|
||||||
|
d.add Addresses * $INTERNAL_IP4_ADDRESS
|
||||||
|
d.add SubnetMasks * 255.255.255.255
|
||||||
|
d.add InterfaceName $TUNDEV
|
||||||
|
$OVERRIDE_PRIMARY
|
||||||
|
set State:/Network/Service/$TUNDEV/IPv4
|
||||||
|
close
|
||||||
|
EOF
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN_ORIG" ]; then
|
||||||
|
scutil >/dev/null 2>&1 <<-EOF
|
||||||
|
open
|
||||||
|
get State:/Network/Service/$TUNDEV/DNS
|
||||||
|
d.add DomainName $CISCO_DEF_DOMAIN_ORIG
|
||||||
|
d.add SearchDomains * $CISCO_DEF_DOMAIN_ORIG
|
||||||
|
d.add SupplementalMatchDomains * $CISCO_DEF_DOMAIN_ORIG
|
||||||
|
set State:/Network/Service/$TUNDEV/DNS
|
||||||
|
close
|
||||||
|
EOF
|
||||||
|
fi
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
restore_resolvconf_generic() {
|
||||||
|
if [ ! -f "$RESOLV_CONF_BACKUP" ]; then
|
||||||
|
return
|
||||||
|
fi
|
||||||
|
grep '^#@VPNC_GENERATED@' /etc/resolv.conf > /dev/null 2>&1 && cat "$RESOLV_CONF_BACKUP" > /etc/resolv.conf
|
||||||
|
rm -f -- "$RESOLV_CONF_BACKUP"
|
||||||
|
|
||||||
|
if [ "$OS" = "Darwin" ]; then
|
||||||
|
case "`uname -r`" in
|
||||||
|
# Skip for pre-10.4 systems
|
||||||
|
4.*|5.*|6.*|7.*)
|
||||||
|
;;
|
||||||
|
# 10.4 and later require use of scutil for DNS to work properly
|
||||||
|
*)
|
||||||
|
scutil >/dev/null 2>&1 <<-EOF
|
||||||
|
open
|
||||||
|
remove State:/Network/Service/$TUNDEV/IPv4
|
||||||
|
remove State:/Network/Service/$TUNDEV/DNS
|
||||||
|
close
|
||||||
|
EOF
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
# === resolv.conf handling via /sbin/netconfig (Suse 11.1) =====================
|
||||||
|
|
||||||
|
# Suse provides a script that modifies resolv.conf. Use it because it will
|
||||||
|
# restart/reload all other services that care about it (e.g. lwresd). [unclear if this is still true, but probably --mlk]
|
||||||
|
|
||||||
|
modify_resolvconf_suse_netconfig()
|
||||||
|
{
|
||||||
|
/sbin/netconfig modify -s vpnc -i "$TUNDEV" <<-EOF
|
||||||
|
INTERFACE='$TUNDEV'
|
||||||
|
DNSSERVERS='$INTERNAL_IP4_DNS'
|
||||||
|
DNSDOMAIN='$CISCO_DEF_DOMAIN'
|
||||||
|
EOF
|
||||||
|
}
|
||||||
|
# Restore resolv.conf to old contents on Suse
|
||||||
|
restore_resolvconf_suse_netconfig()
|
||||||
|
{
|
||||||
|
/sbin/netconfig remove -s vpnc -i "$TUNDEV"
|
||||||
|
}
|
||||||
|
|
||||||
|
# === resolv.conf handling via /sbin/modify_resolvconf (Suse) =====================
|
||||||
|
|
||||||
|
# Suse provides a script that modifies resolv.conf. Use it because it will
|
||||||
|
# restart/reload all other services that care about it (e.g. lwresd).
|
||||||
|
|
||||||
|
modify_resolvconf_suse()
|
||||||
|
{
|
||||||
|
FULL_SCRIPTNAME=`readlink -f $0`
|
||||||
|
RESOLV_OPTS=''
|
||||||
|
test -n "$INTERNAL_IP4_DNS" && RESOLV_OPTS="-n \"$INTERNAL_IP4_DNS\""
|
||||||
|
test -n "$CISCO_DEF_DOMAIN" && RESOLV_OPTS="$RESOLV_OPTS -d $CISCO_DEF_DOMAIN"
|
||||||
|
test -n "$RESOLV_OPTS" && eval /sbin/modify_resolvconf modify -s vpnc -p $SCRIPTNAME -f $FULL_SCRIPTNAME -e $TUNDEV $RESOLV_OPTS -t \"This file was created by $SCRIPTNAME\"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Restore resolv.conf to old contents on Suse
|
||||||
|
restore_resolvconf_suse()
|
||||||
|
{
|
||||||
|
FULL_SCRIPTNAME=`readlink -f $0`
|
||||||
|
/sbin/modify_resolvconf restore -s vpnc -p $SCRIPTNAME -f $FULL_SCRIPTNAME -e $TUNDEV
|
||||||
|
}
|
||||||
|
|
||||||
|
# === resolv.conf handling via UCI (OpenWRT) =========
|
||||||
|
|
||||||
|
modify_resolvconf_openwrt() {
|
||||||
|
add_dns $OPENWRT_INTERFACE $INTERNAL_IP4_DNS
|
||||||
|
}
|
||||||
|
|
||||||
|
restore_resolvconf_openwrt() {
|
||||||
|
remove_dns $OPENWRT_INTERFACE
|
||||||
|
}
|
||||||
|
# === resolv.conf handling via /usr/sbin/resolvconf (Debian, Ubuntu, Gentoo)) =========
|
||||||
|
|
||||||
|
modify_resolvconf_manager() {
|
||||||
|
NEW_RESOLVCONF=""
|
||||||
|
for i in $INTERNAL_IP4_DNS; do
|
||||||
|
NEW_RESOLVCONF="$NEW_RESOLVCONF
|
||||||
|
nameserver $i"
|
||||||
|
done
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN" ]; then
|
||||||
|
NEW_RESOLVCONF="$NEW_RESOLVCONF
|
||||||
|
domain $CISCO_DEF_DOMAIN"
|
||||||
|
fi
|
||||||
|
echo "$NEW_RESOLVCONF" | /usr/sbin/resolvconf -a $TUNDEV
|
||||||
|
}
|
||||||
|
|
||||||
|
restore_resolvconf_manager() {
|
||||||
|
/usr/sbin/resolvconf -d $TUNDEV
|
||||||
|
}
|
||||||
|
|
||||||
|
# === resolv.conf handling via unbound =========
|
||||||
|
|
||||||
|
modify_resolvconf_unbound() {
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN" ]; then
|
||||||
|
/usr/sbin/unbound-control forward_add +i ${CISCO_DEF_DOMAIN} ${INTERNAL_IP4_DNS}
|
||||||
|
/usr/sbin/unbound-control flush_requestlist
|
||||||
|
/usr/sbin/unbound-control flush_zone ${CISCO_DEF_DOMAIN}
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
restore_resolvconf_unbound() {
|
||||||
|
if [ -n "$CISCO_DEF_DOMAIN" ]; then
|
||||||
|
/usr/sbin/unbound-control forward_remove +i ${CISCO_DEF_DOMAIN}
|
||||||
|
/usr/sbin/unbound-control flush_zone ${CISCO_DEF_DOMAIN}
|
||||||
|
/usr/sbin/unbound-control flush_requestlist
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# ========= Toplevel state handling =======================================
|
||||||
|
|
||||||
|
kernel_is_2_6_or_above() {
|
||||||
|
case `uname -r` in
|
||||||
|
1.*|2.[012345]*)
|
||||||
|
return 1
|
||||||
|
;;
|
||||||
|
*)
|
||||||
|
return 0
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
}
|
||||||
|
|
||||||
|
do_pre_init() {
|
||||||
|
if [ "$OS" = "Linux" ]; then
|
||||||
|
if (exec 6<> /dev/net/tun) > /dev/null 2>&1 ; then
|
||||||
|
:
|
||||||
|
else # can't open /dev/net/tun
|
||||||
|
test -e /proc/sys/kernel/modprobe && `cat /proc/sys/kernel/modprobe` tun 2>/dev/null
|
||||||
|
# fix for broken devfs in kernel 2.6.x
|
||||||
|
if [ "`readlink /dev/net/tun`" = misc/net/tun \
|
||||||
|
-a ! -e /dev/net/misc/net/tun -a -e /dev/misc/net/tun ] ; then
|
||||||
|
ln -sf /dev/misc/net/tun /dev/net/tun
|
||||||
|
fi
|
||||||
|
# make sure tun device exists
|
||||||
|
if [ ! -e /dev/net/tun ]; then
|
||||||
|
mkdir -p /dev/net
|
||||||
|
mknod -m 0640 /dev/net/tun c 10 200
|
||||||
|
[ -x /sbin/restorecon ] && /sbin/restorecon /dev/net/tun
|
||||||
|
fi
|
||||||
|
# workaround for a possible latency caused by udev, sleep max. 10s
|
||||||
|
if kernel_is_2_6_or_above ; then
|
||||||
|
for x in `seq 100` ; do
|
||||||
|
(exec 6<> /dev/net/tun) > /dev/null 2>&1 && break;
|
||||||
|
sleep 0.1
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
elif [ "$OS" = "FreeBSD" ]; then
|
||||||
|
if ! kldstat -q -m if_tun > /dev/null; then
|
||||||
|
kldload if_tun
|
||||||
|
fi
|
||||||
|
|
||||||
|
if ! ifconfig $TUNDEV > /dev/null; then
|
||||||
|
ifconfig $TUNDEV create
|
||||||
|
fi
|
||||||
|
elif [ "$OS" = "GNU/kFreeBSD" ]; then
|
||||||
|
if [ ! -e /dev/tun ]; then
|
||||||
|
kldload if_tun
|
||||||
|
fi
|
||||||
|
elif [ "$OS" = "NetBSD" ]; then
|
||||||
|
:
|
||||||
|
elif [ "$OS" = "OpenBSD" ]; then
|
||||||
|
if ! ifconfig $TUNDEV > /dev/null; then
|
||||||
|
ifconfig $TUNDEV create
|
||||||
|
fi
|
||||||
|
:
|
||||||
|
elif [ "$OS" = "SunOS" ]; then
|
||||||
|
:
|
||||||
|
elif [ "$OS" = "Darwin" ]; then
|
||||||
|
:
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
do_connect() {
|
||||||
|
if [ -n "$CISCO_BANNER" ]; then
|
||||||
|
echo "Connect Banner:"
|
||||||
|
echo "$CISCO_BANNER" | while read LINE ; do echo "|" "$LINE" ; done
|
||||||
|
echo
|
||||||
|
fi
|
||||||
|
|
||||||
|
set_vpngateway_route
|
||||||
|
do_ifconfig
|
||||||
|
if [ -n "$CISCO_SPLIT_INC" ]; then
|
||||||
|
i=0
|
||||||
|
while [ $i -lt $CISCO_SPLIT_INC ] ; do
|
||||||
|
eval NETWORK="\${CISCO_SPLIT_INC_${i}_ADDR}"
|
||||||
|
eval NETMASK="\${CISCO_SPLIT_INC_${i}_MASK}"
|
||||||
|
eval NETMASKLEN="\${CISCO_SPLIT_INC_${i}_MASKLEN}"
|
||||||
|
if [ "$NETWORK" != "0.0.0.0" ]; then
|
||||||
|
set_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
|
||||||
|
else
|
||||||
|
set_default_route
|
||||||
|
fi
|
||||||
|
i=`expr $i + 1`
|
||||||
|
done
|
||||||
|
for i in $INTERNAL_IP4_DNS ; do
|
||||||
|
echo "$i" | grep : >/dev/null || \
|
||||||
|
set_network_route "$i" "255.255.255.255" "32"
|
||||||
|
done
|
||||||
|
elif [ -n "$INTERNAL_IP4_ADDRESS" ]; then
|
||||||
|
set_default_route
|
||||||
|
fi
|
||||||
|
if [ -n "$CISCO_IPV6_SPLIT_INC" ]; then
|
||||||
|
i=0
|
||||||
|
while [ $i -lt $CISCO_IPV6_SPLIT_INC ] ; do
|
||||||
|
eval NETWORK="\${CISCO_IPV6_SPLIT_INC_${i}_ADDR}"
|
||||||
|
eval NETMASKLEN="\${CISCO_IPV6_SPLIT_INC_${i}_MASKLEN}"
|
||||||
|
if [ $NETMASKLEN -lt 128 ]; then
|
||||||
|
set_ipv6_network_route "$NETWORK" "$NETMASKLEN"
|
||||||
|
else
|
||||||
|
set_ipv6_default_route
|
||||||
|
fi
|
||||||
|
i=`expr $i + 1`
|
||||||
|
done
|
||||||
|
for i in $INTERNAL_IP4_DNS ; do
|
||||||
|
if echo "$i" | grep : >/dev/null; then
|
||||||
|
set_ipv6_network_route "$i" "128"
|
||||||
|
fi
|
||||||
|
done
|
||||||
|
elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then
|
||||||
|
set_ipv6_default_route
|
||||||
|
fi
|
||||||
|
|
||||||
|
if [ -n "$INTERNAL_IP4_DNS" ]; then
|
||||||
|
$MODIFYRESOLVCONF
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
do_disconnect() {
|
||||||
|
if [ -n "$CISCO_SPLIT_INC" ]; then
|
||||||
|
i=0
|
||||||
|
while [ $i -lt $CISCO_SPLIT_INC ] ; do
|
||||||
|
eval NETWORK="\${CISCO_SPLIT_INC_${i}_ADDR}"
|
||||||
|
eval NETMASK="\${CISCO_SPLIT_INC_${i}_MASK}"
|
||||||
|
eval NETMASKLEN="\${CISCO_SPLIT_INC_${i}_MASKLEN}"
|
||||||
|
if [ "$NETWORK" != "0.0.0.0" ]; then
|
||||||
|
# FIXME: This doesn't restore previously overwritten
|
||||||
|
# routes.
|
||||||
|
del_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
|
||||||
|
else
|
||||||
|
reset_default_route
|
||||||
|
fi
|
||||||
|
i=`expr $i + 1`
|
||||||
|
done
|
||||||
|
for i in $INTERNAL_IP4_DNS ; do
|
||||||
|
del_network_route "$i" "255.255.255.255" "32"
|
||||||
|
done
|
||||||
|
else
|
||||||
|
reset_default_route
|
||||||
|
fi
|
||||||
|
if [ -n "$CISCO_IPV6_SPLIT_INC" ]; then
|
||||||
|
i=0
|
||||||
|
while [ $i -lt $CISCO_IPV6_SPLIT_INC ] ; do
|
||||||
|
eval NETWORK="\${CISCO_IPV6_SPLIT_INC_${i}_ADDR}"
|
||||||
|
eval NETMASKLEN="\${CISCO_IPV6_SPLIT_INC_${i}_MASKLEN}"
|
||||||
|
if [ $NETMASKLEN -eq 0 ]; then
|
||||||
|
reset_ipv6_default_route
|
||||||
|
else
|
||||||
|
del_ipv6_network_route "$NETWORK" "$NETMASKLEN"
|
||||||
|
fi
|
||||||
|
i=`expr $i + 1`
|
||||||
|
done
|
||||||
|
for i in $INTERNAL_IP6_DNS ; do
|
||||||
|
del_ipv6_network_route "$i" "128"
|
||||||
|
done
|
||||||
|
elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then
|
||||||
|
reset_ipv6_default_route
|
||||||
|
fi
|
||||||
|
|
||||||
|
del_vpngateway_route
|
||||||
|
|
||||||
|
if [ -n "$INTERNAL_IP4_DNS" ]; then
|
||||||
|
$RESTORERESOLVCONF
|
||||||
|
fi
|
||||||
|
|
||||||
|
|
||||||
|
if [ -n "$IPROUTE" ]; then
|
||||||
|
if [ -n "$INTERNAL_IP4_ADDRESS" ]; then
|
||||||
|
$IPROUTE addr del "$INTERNAL_IP4_ADDRESS/255.255.255.255" peer "$INTERNAL_IP4_ADDRESS" dev "$TUNDEV"
|
||||||
|
fi
|
||||||
|
# If the netmask is provided, it contains the address _and_ netmask
|
||||||
|
if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
|
||||||
|
INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
|
||||||
|
fi
|
||||||
|
if [ -n "$INTERNAL_IP6_NETMASK" ]; then
|
||||||
|
$IPROUTE -6 addr del $INTERNAL_IP6_NETMASK dev $TUNDEV
|
||||||
|
fi
|
||||||
|
else
|
||||||
|
if [ -n "$INTERNAL_IP4_ADDRESS" ]; then
|
||||||
|
ifconfig "$TUNDEV" 0.0.0.0
|
||||||
|
fi
|
||||||
|
if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
|
||||||
|
INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
|
||||||
|
fi
|
||||||
|
if [ -n "$INTERNAL_IP6_NETMASK" ]; then
|
||||||
|
ifconfig "$TUNDEV" inet6 del $INTERNAL_IP6_NETMASK
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
|
||||||
|
destroy_tun_device
|
||||||
|
}
|
||||||
|
|
||||||
|
#### Main
|
||||||
|
|
||||||
|
if [ -z "$reason" ]; then
|
||||||
|
echo "this script must be called from vpnc" 1>&2
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
case "$reason" in
|
||||||
|
pre-init)
|
||||||
|
run_hooks pre-init
|
||||||
|
do_pre_init
|
||||||
|
;;
|
||||||
|
connect)
|
||||||
|
run_hooks connect
|
||||||
|
do_connect
|
||||||
|
run_hooks post-connect
|
||||||
|
;;
|
||||||
|
disconnect)
|
||||||
|
run_hooks disconnect
|
||||||
|
do_disconnect
|
||||||
|
run_hooks post-disconnect
|
||||||
|
;;
|
||||||
|
reconnect)
|
||||||
|
run_hooks reconnect
|
||||||
|
;;
|
||||||
|
*)
|
||||||
|
echo "unknown reason '$reason'. Maybe vpnc-script is out of date" 1>&2
|
||||||
|
exit 1
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
|
||||||
|
exit 0
|
||||||
29
root/etc/vpnc/vpnc-split-script
Executable file
29
root/etc/vpnc/vpnc-split-script
Executable file
@ -0,0 +1,29 @@
|
|||||||
|
#!/bin/sh
|
||||||
|
|
||||||
|
# Add one IP to the list of split tunnel
|
||||||
|
add_ip ()
|
||||||
|
{
|
||||||
|
export CISCO_SPLIT_INC_${CISCO_SPLIT_INC}_ADDR=$1
|
||||||
|
export CISCO_SPLIT_INC_${CISCO_SPLIT_INC}_MASK=255.255.255.255
|
||||||
|
export CISCO_SPLIT_INC_${CISCO_SPLIT_INC}_MASKLEN=32
|
||||||
|
export CISCO_SPLIT_INC=$(($CISCO_SPLIT_INC + 1))
|
||||||
|
}
|
||||||
|
|
||||||
|
# Initialize empty split tunnel list
|
||||||
|
export CISCO_SPLIT_INC=0
|
||||||
|
|
||||||
|
# Delete DNS info provided by VPN server to use internet DNS
|
||||||
|
# Comment following line to use DNS beyond VPN tunnel
|
||||||
|
unset INTERNAL_IP4_DNS
|
||||||
|
|
||||||
|
# List of IPs beyond VPN tunnel
|
||||||
|
add_ip 157.193.40.2 # Helios
|
||||||
|
add_ip 157.193.228.59 # Moriarty
|
||||||
|
add_ip 157.193.16.10 # HPC
|
||||||
|
add_ip 157.193.40.15 # HPC
|
||||||
|
add_ip 157.193.48.109 # Athena
|
||||||
|
|
||||||
|
# Execute default script
|
||||||
|
. /etc/vpnc/vpnc-script
|
||||||
|
|
||||||
|
# End of script
|
||||||
Loading…
Reference in New Issue
Block a user