mirror of
https://gitlab.archlinux.org/tpowa/archboot.git
synced 2024-09-20 03:50:37 +02:00
use vpnc config from chroot
This commit is contained in:
Tobias Powalowski
parent
676a7ada6f
commit
4757a277f7
3 changed files with 2 additions and 548 deletions
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@ -7,8 +7,8 @@ build ()
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for i in $apps; do
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for i in $apps; do
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add_binary "$i"
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add_binary "$i"
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done
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done
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add_file "/usr/share/archboot/vpnc/etc/vpnc/default.conf" "/etc/vpnc/default.conf"
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add_file "/etc/vpnc/default.conf"
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add_file "/usr/share/archboot/vpnc/etc/vpnc/vpnc-script" "/etc/vpnc/vpnc-script"
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add_file "/etc/vpnc/vpnc-script"
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}
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}
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@ -1,17 +0,0 @@
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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 my.gateway.com
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#IPSec ID someid
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#IPSec secret somesecret
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#Xauth username myusername
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#Xauth password mypassword
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@ -1,529 +0,0 @@
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#!/bin/sh
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#* reason -- why this script was called, one of: pre-init connect disconnect
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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_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 serverss
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#* INTERNAL_IP4_NBNS -- list of wins 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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# 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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DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute
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RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup
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FULL_SCRIPTNAME=/usr/sbin/vpnc
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SCRIPTNAME=`basename $FULL_SCRIPTNAME`
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# some systems, eg. Darwin & FreeBSD, prune /var/run on boot
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if [ ! -d "/var/run/vpnc" ]; then
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mkdir -p /var/run/vpnc
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fi
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# stupid SunOS: no blubber in /usr/local/bin ... (on stdout)
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IPROUTE="`which ip | grep '^/' 2> /dev/null`"
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if [ "$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 [ -x /sbin/resolvconf ]; then # Optional tool on Debian, Ubuntu, Gentoo
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MODIFYRESOLVCONF=modify_resolvconf_manager
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RESTORERESOLVCONF=restore_resolvconf_manager
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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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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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# =========== 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 "$IPROUTE" ]; then
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DEV=$($IPROUTE route | grep ^default | sed 's/^.* dev \([[:alnum:]-]\+\).*$/\1/')
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MTU=$(($($IPROUTE link show "$DEV" | grep mtu | sed 's/^.* mtu \([[:digit:]]\+\).*$/\1/') - 88))
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else
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MTU=1412
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fi
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# Point to point interface require a netmask of 255.255.255.255 on some systems
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ifconfig "$TUNDEV" inet "$INTERNAL_IP4_ADDRESS" $ifconfig_syntax_ptp "$INTERNAL_IP4_ADDRESS" netmask 255.255.255.255 mtu ${MTU} up
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if [ -n "$INTERNAL_IP4_NETMASK" ]; then
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set_network_route $INTERNAL_IP4_NETADDR $INTERNAL_IP4_NETMASK $INTERNAL_IP4_NETMASKLEN
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fi
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}
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destroy_tun_device() {
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case "$OS" in
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NetBSD) # and probably others...
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ifconfig "$TUNDEV" destroy
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;;
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esac
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}
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# =========== route handling ====================================
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if [ -n "$IPROUTE" ]; then
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fix_ip_get_output () {
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sed 's/cache//;s/metric \?[0-9]\+ [0-9]\+//g;s/hoplimit [0-9]\+//g'
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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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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"
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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
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route add default $route_syntax_gw "$INTERNAL_IP4_ADDRESS"
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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="$3"
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del_network_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
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route add -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$INTERNAL_IP4_ADDRESS"
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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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route $route_syntax_del default
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route add default $route_syntax_gw `cat "$DEFAULT_ROUTE_FILE"`
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rm -f -- "$DEFAULT_ROUTE_FILE"
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fi
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}
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del_network_route() {
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case "$OS" in
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Linux|NetBSD|Darwin) # and probably others...
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# routes are deleted automatically on device shutdown
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return
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;;
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esac
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NETWORK="$1"
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NETMASK="$2"
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NETMASKLEN="$3"
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route $route_syntax_del -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$INTERNAL_IP4_ADDRESS"
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}
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fi
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# =========== resolv.conf handling ====================================
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# =========== resolv.conf handling for any OS =========================
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modify_resolvconf_generic() {
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grep '^#@VPNC_GENERATED@' /etc/resolv.conf > /dev/null 2>&1 || cp -- /etc/resolv.conf "$RESOLV_CONF_BACKUP"
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NEW_RESOLVCONF="#@VPNC_GENERATED@ -- this file is generated by vpnc
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# and will be overwritten by vpnc
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# as long as the above mark is intact"
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# Remember the original value of CISCO_DEF_DOMAIN we need it later
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CISCO_DEF_DOMAIN_ORIG="$CISCO_DEF_DOMAIN"
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# Don't step on INTERNAL_IP4_DNS value, use a temporary variable
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INTERNAL_IP4_DNS_TEMP="$INTERNAL_IP4_DNS"
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exec 6< "$RESOLV_CONF_BACKUP"
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while read LINE <&6 ; do
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case "$LINE" in
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nameserver*)
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if [ -n "$INTERNAL_IP4_DNS_TEMP" ]; then
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read ONE_NAMESERVER INTERNAL_IP4_DNS_TEMP <<-EOF
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$INTERNAL_IP4_DNS_TEMP
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EOF
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LINE="nameserver $ONE_NAMESERVER"
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else
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LINE=""
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fi
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;;
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search*)
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if [ -n "$CISCO_DEF_DOMAIN" ]; then
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LINE="$LINE $CISCO_DEF_DOMAIN"
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CISCO_DEF_DOMAIN=""
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fi
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;;
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domain*)
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if [ -n "$CISCO_DEF_DOMAIN" ]; then
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LINE="domain $CISCO_DEF_DOMAIN"
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CISCO_DEF_DOMAIN=""
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fi
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;;
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esac
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NEW_RESOLVCONF="$NEW_RESOLVCONF
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$LINE"
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done
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exec 6<&-
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for i in $INTERNAL_IP4_DNS_TEMP ; do
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NEW_RESOLVCONF="$NEW_RESOLVCONF
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nameserver $i"
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done
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if [ -n "$CISCO_DEF_DOMAIN" ]; then
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NEW_RESOLVCONF="$NEW_RESOLVCONF
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search $CISCO_DEF_DOMAIN"
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fi
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echo "$NEW_RESOLVCONF" > /etc/resolv.conf
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if [ "$OS" = "Darwin" ]; then
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case "`uname -r`" in
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# Skip for pre-10.4 systems
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4.*|5.*|6.*|7.*)
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;;
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# 10.4 and later require use of scutil for DNS to work properly
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*)
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OVERRIDE_PRIMARY=""
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if [ -n "$CISCO_SPLIT_INC" ]; then
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if [ $CISCO_SPLIT_INC -lt 1 ]; then
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# Must override for correct default route
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# Cannot use multiple DNS matching in this case
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OVERRIDE_PRIMARY='d.add OverridePrimary # 1'
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fi
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fi
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# Uncomment the following if/fi pair to use multiple
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# DNS matching when available. When multiple DNS matching
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# is present, anything reading the /etc/resolv.conf file
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# directly will probably not work as intended.
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#if [ -z "$CISCO_DEF_DOMAIN_ORIG" ]; then
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# Cannot use multiple DNS matching without a domain
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OVERRIDE_PRIMARY='d.add OverridePrimary # 1'
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#fi
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scutil >/dev/null 2>&1 <<-EOF
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open
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d.init
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d.add ServerAddresses * $INTERNAL_IP4_DNS
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set State:/Network/Service/$TUNDEV/DNS
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d.init
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# next line overrides the default gateway and breaks split routing
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# d.add Router $INTERNAL_IP4_ADDRESS
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d.add Addresses * $INTERNAL_IP4_ADDRESS
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d.add SubnetMasks * 255.255.255.255
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d.add InterfaceName $TUNDEV
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$OVERRIDE_PRIMARY
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set State:/Network/Service/$TUNDEV/IPv4
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close
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EOF
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if [ -n "$CISCO_DEF_DOMAIN_ORIG" ]; then
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scutil >/dev/null 2>&1 <<-EOF
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open
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get State:/Network/Service/$TUNDEV/DNS
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d.add DomainName $CISCO_DEF_DOMAIN_ORIG
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d.add SearchDomains * $CISCO_DEF_DOMAIN_ORIG
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d.add SupplementalMatchDomains * $CISCO_DEF_DOMAIN_ORIG
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set State:/Network/Service/$TUNDEV/DNS
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close
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EOF
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fi
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;;
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esac
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fi
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}
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restore_resolvconf_generic() {
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if [ ! -e "$RESOLV_CONF_BACKUP" ]; then
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return
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fi
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grep '^#@VPNC_GENERATED@' /etc/resolv.conf > /dev/null 2>&1 && cat "$RESOLV_CONF_BACKUP" > /etc/resolv.conf
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|
||||||
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/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()
|
|
||||||
{
|
|
||||||
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 $SCRIPTNAME -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()
|
|
||||||
{
|
|
||||||
/sbin/modify_resolvconf restore -s vpnc -p $SCRIPTNAME -f $FULL_SCRIPTNAME -e $TUNDEV
|
|
||||||
}
|
|
||||||
|
|
||||||
# === resolv.conf handling via /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" | /sbin/resolvconf -a $TUNDEV
|
|
||||||
}
|
|
||||||
|
|
||||||
restore_resolvconf_manager() {
|
|
||||||
/sbin/resolvconf -d $TUNDEV
|
|
||||||
}
|
|
||||||
|
|
||||||
# ========= Toplevel state handling =======================================
|
|
||||||
|
|
||||||
kernel_is_2_6_or_above() {
|
|
||||||
case `uname -r` in
|
|
||||||
1.*|2.[012345]*)
|
|
||||||
return 1
|
|
||||||
;;
|
|
||||||
*)
|
|
||||||
return 0
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
}
|
|
||||||
|
|
||||||
do_pre_init() {
|
|
||||||
if [ "$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
|
|
||||||
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 [ "$OS" = "FreeBSD" ]; then
|
|
||||||
if [ ! -e /dev/tun ]; then
|
|
||||||
kldload if_tun
|
|
||||||
fi
|
|
||||||
elif [ "$OS" = "GNU/kFreeBSD" ]; then
|
|
||||||
if [ ! -e /dev/tun ]; then
|
|
||||||
kldload if_tun
|
|
||||||
fi
|
|
||||||
elif [ "$OS" = "NetBSD" ]; then
|
|
||||||
:
|
|
||||||
elif [ "$OS" = "OpenBSD" ]; then
|
|
||||||
:
|
|
||||||
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 "|" "$LINE" ; done
|
|
||||||
echo
|
|
||||||
fi
|
|
||||||
|
|
||||||
do_ifconfig
|
|
||||||
set_vpngateway_route
|
|
||||||
if [ -n "$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 $INTERNAL_IP4_DNS ; do
|
|
||||||
set_network_route "$i" "255.255.255.255" "32"
|
|
||||||
done
|
|
||||||
else
|
|
||||||
set_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
|
|
||||||
|
|
||||||
del_vpngateway_route
|
|
||||||
|
|
||||||
if [ -n "$INTERNAL_IP4_DNS" ]; then
|
|
||||||
$RESTORERESOLVCONF
|
|
||||||
fi
|
|
||||||
destroy_tun_device
|
|
||||||
}
|
|
||||||
|
|
||||||
#### Main
|
|
||||||
|
|
||||||
if [ -z "$reason" ]; then
|
|
||||||
echo "this script must be called from vpnc" 1>&2
|
|
||||||
exit 1
|
|
||||||
fi
|
|
||||||
|
|
||||||
case "$reason" in
|
|
||||||
pre-init)
|
|
||||||
do_pre_init
|
|
||||||
;;
|
|
||||||
connect)
|
|
||||||
do_connect
|
|
||||||
;;
|
|
||||||
disconnect)
|
|
||||||
do_disconnect
|
|
||||||
;;
|
|
||||||
*)
|
|
||||||
echo "unknown reason '$reason'. Maybe vpnc-script is out of date" 1>&2
|
|
||||||
exit 1
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
|
|
||||||
exit 0
|
|
||||||
Loading…
Reference in a new issue