diff --git a/vpnc-script b/vpnc-script index 4cf934f..24788fe 100644 --- a/vpnc-script +++ b/vpnc-script @@ -2,7 +2,7 @@ # # Originally part of vpnc source code: # © 2005-2012 Maurice Massar, Jörg Mayer, Antonio Borneo et al. -# © 2009-2022 David Woodhouse , Daniel Lenski et al. +# © 2009-2012 David Woodhouse # # 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 @@ -22,37 +22,31 @@ # # List of parameters passed through environment #* reason -- why this script was called, one of: pre-init connect disconnect reconnect attempt-reconnect -#* VPNGATEWAY -- VPN gateway address (always present) -#* VPNPID -- PID of the process controlling the VPN (OpenConnect v9.0+) +#* VPNGATEWAY -- vpn gateway address (always present) #* TUNDEV -- tunnel device (always present) -#* IDLE_TIMEOUT -- gateway's idle timeout in seconds (OpenConnect v8.06+); unused -#* LOG_LEVEL -- log level; ERROR=0, INFO=1, DEBUG=2, TRACE=3 (OpenConnect v9.0+) #* INTERNAL_IP4_ADDRESS -- address (always present) -#* INTERNAL_IP4_MTU -- MTU (often unset) +#* INTERNAL_IP4_MTU -- mtu (often unset) #* INTERNAL_IP4_NETMASK -- netmask (often unset) #* INTERNAL_IP4_NETMASKLEN -- netmask length (often unset) #* INTERNAL_IP4_NETADDR -- address of network (only present if netmask is set) -#* INTERNAL_IP4_DNS -- list of DNS servers -#* INTERNAL_IP4_NBNS -- list of WINS servers +#* INTERNAL_IP4_DNS -- list of dns servers +#* INTERNAL_IP4_NBNS -- list of wins servers #* INTERNAL_IP6_ADDRESS -- IPv6 address #* INTERNAL_IP6_NETMASK -- IPv6 netmask #* INTERNAL_IP6_DNS -- IPv6 list of dns servers #* CISCO_DEF_DOMAIN -- default domain name #* CISCO_BANNER -- banner from server -#* CISCO_SPLIT_DNS -- DNS search domain list +#* CISCO_SPLIT_DNS -- dns search domain list #* CISCO_SPLIT_INC -- number of networks in split-network-list #* CISCO_SPLIT_INC_%d_ADDR -- network address #* CISCO_SPLIT_INC_%d_MASK -- subnet mask (for example: 255.255.255.0) #* CISCO_SPLIT_INC_%d_MASKLEN -- subnet masklen (for example: 24) -#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0); unused -#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0); unused -#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0); unused +#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0) +#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0) +#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0) #* CISCO_IPV6_SPLIT_INC -- number of networks in IPv6 split-network-list #* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address #* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen -# -# The split tunnel variables above have *_EXC* counterparts for network -# addresses to be excluded from the VPN tunnel. # FIXMEs: @@ -66,22 +60,17 @@ # 2) There are two different functions to set routes: generic routes and the # default route. Why isn't the defaultroute handled via the generic route case? # 3) In the split tunnel case, all routes but the default route might get replaced -# without getting restored later. We should explicitly check and save them just +# without getting restored later. We should explicitely check and save them just # like the defaultroute # 4) Replies to a dhcp-server should never be sent into the tunnel # Section B: Split DNS handling # 1) Maybe dnsmasq can do something like that -# 2) Parse DNS packets going out via tunnel and redirect them to original DNS-server +# 2) Parse dns packets going out via tunnel and redirect them to original dns-server -# ======== For test logging (CI/CD will uncomment automatically) ========= - -#TRACE# echo "------------------" -#TRACE# echo "vpnc-script environment:" -#TRACE# env | grep -E '^(CISCO_|INTERNAL_IP|VPNGATEWAY|TUNDEV|IDLE_TIMEOUT|reason)' | sort -#TRACE# echo "------------------" -#TRACE# set -x +#env | sort +#set -x # =========== script (variable) setup ==================================== @@ -90,22 +79,8 @@ PATH=/sbin:/usr/sbin:$PATH OS="`uname -s`" HOOKS_DIR=/etc/vpnc - -# Use the PID of the controlling process (vpnc or OpenConnect) to -# uniquely identify this VPN connection. Normally, the parent process -# is a shell, and the grandparent's PID is the relevant one. -# OpenConnect v9.0+ provides VPNPID, so we don't need to determine it. -if [ -z "$VPNPID" ]; then - VPNPID=$PPID - PCMD=`ps -c -o command= -p $PPID` - case "$PCMD" in - *sh) VPNPID=`ps -o ppid= -p $PPID` ;; - esac -fi - -DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute.${VPNPID} -DEFAULT_ROUTE_FILE_IPV6=/var/run/vpnc/defaultroute_ipv6.${VPNPID} -RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup.${VPNPID} +DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute +RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup SCRIPTNAME=`basename $0` # some systems, eg. Darwin & FreeBSD, prune /var/run on boot @@ -121,31 +96,19 @@ else fi if [ "$OS" = "Linux" ]; then - IPROUTE="`command -v ip | grep '^/'`" + IPROUTE="`which ip 2> /dev/null | grep '^/'`" ifconfig_syntax_ptp="pointopoint" route_syntax_gw="gw" route_syntax_del="del" route_syntax_netmask="netmask" - route_syntax_inet6="-6" - route_syntax_inet6_host="-6" - route_syntax_inet6_net="-6" - ifconfig_syntax_add_inet6="add" - ifconfig_syntax_del() { case "$1" in *:*) echo del "$1" ;; *) echo 0.0.0.0 ;; esac; } - netstat_syntax_ipv6="-6" else - # iproute2 is Linux only; if `command -v ip` returns something on another OS, it's likely an unrelated tool + # iproute2 is Linux only; if `which ip` returns something on another OS, it's likely an unrelated tool # (see https://github.com/dlenski/openconnect/issues/132#issuecomment-470475009) IPROUTE="" ifconfig_syntax_ptp="" route_syntax_gw="" route_syntax_del="delete" route_syntax_netmask="-netmask" - route_syntax_inet6="-inet6" - route_syntax_inet6_host="-inet6 -host" - route_syntax_inet6_net="-inet6 -net" - ifconfig_syntax_del() { case "$1" in *:*) echo inet6 "$1" delete ;; *) echo "$1" delete ;; esac; } - ifconfig_syntax_add_inet6="inet6" - netstat_syntax_ipv6="-f inet6" fi if [ "$OS" = "SunOS" ]; then route_syntax_interface="-interface" @@ -155,16 +118,11 @@ else ifconfig_syntax_ptpv6="" fi -RESOLVEDENABLED=0 -# detect usage of systemd-resolved via nss-resolve... -grep '^hosts' /etc/nsswitch.conf 2>/dev/null | grep resolve >/dev/null 2>&1 || \ -# or via nss-dns with /etc/resolv.conf under control of systemd-resolved -(grep '^hosts' /etc/nsswitch.conf 2>/dev/null | grep dns >/dev/null 2>&1 && readlink /etc/resolv.conf | grep -e '/run/systemd/resolve/stub-resolv.conf$' -e '/usr/lib/systemd/resolv.conf$' -e '/run/systemd/resolve/resolv.conf$' >/dev/null 2>&1) +grep ^hosts /etc/nsswitch.conf 2>/dev/null|grep resolve >/dev/null 2>&1 if [ $? = 0 ];then - command resolvectl status >/dev/null 2>&1 || command systemd-resolve --status >/dev/null 2>&1 - if [ $? = 0 ];then - RESOLVEDENABLED=1 - fi + RESOLVEDENABLED=1 +else + RESOLVEDENABLED=0 fi if [ -r /etc/openwrt_release ] && [ -n "$OPENWRT_INTERFACE" ]; then @@ -180,9 +138,8 @@ elif [ -x /usr/bin/busctl ] && [ ${RESOLVEDENABLED} = 1 ]; then # For systemd-resolved (version 229 and above) MODIFYRESOLVCONF=modify_resolved_manager_old RESTORERESOLVCONF=restore_resolved_manager_old -elif [ -x /sbin/resolvconf ] && [ "`basename $(readlink /sbin/resolvconf) 2> /dev/null`" != resolvectl ]; then - # Optional tool on Debian, Ubuntu, Gentoo, FreeBSD and DragonFly BSD - # (ignored if symlink to resolvctl, created by some versions of systemd-resolved) +elif [ -x /sbin/resolvconf ]; then + # Optional tool on Debian, Ubuntu, Gentoo and FreeBSD MODIFYRESOLVCONF=modify_resolvconf_manager RESTORERESOLVCONF=restore_resolvconf_manager elif [ -x /sbin/netconfig ] && [ ! -f /etc/slackware-version ]; then @@ -198,10 +155,6 @@ elif [ -x /sbin/modify_resolvconf ]; then elif [ -x /usr/sbin/unbound-control ] && /usr/sbin/unbound-control status > /dev/null 2>&1; then MODIFYRESOLVCONF=modify_resolvconf_unbound RESTORERESOLVCONF=restore_resolvconf_unbound -elif [ -x /usr/sbin/rcctl ] && /usr/sbin/rcctl check resolvd >/dev/null; then - # OpenBSD's resolvd by sending route messages - MODIFYRESOLVCONF=modify_resolvconf_resolvd - RESTORERESOLVCONF=restore_resolvconf_resolvd else # Generic for any OS MODIFYRESOLVCONF=modify_resolvconf_generic RESTORERESOLVCONF=restore_resolvconf_generic @@ -214,9 +167,9 @@ run_hooks() { HOOK="$1" if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then - for script in ${HOOKS_DIR}/${HOOK}.d/* ; do - [ -f $script ] && . $script - done + for script in ${HOOKS_DIR}/${HOOK}.d/* ; do + [ -f $script ] && . $script + done fi } @@ -251,70 +204,56 @@ do_ifconfig() { # If the netmask is provided, it contains the address _and_ netmask if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then - INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128" + INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128" fi if [ -n "$INTERNAL_IP6_NETMASK" ]; then - if [ -n "$IPROUTE" ]; then - $IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV - else - # Unlike for Legacy IP, we don't specify the dest_address - # here on *BSD. OpenBSD for one will refuse to accept - # incoming packets to that address if we do. - # OpenVPN does the same (gives dest_address for Legacy IP - # but not for IPv6). - # Only Solaris needs it; hence $ifconfig_syntax_ptpv6 - ifconfig "$TUNDEV" $ifconfig_syntax_add_inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up - fi + if [ -n "$IPROUTE" ]; then + $IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV + else + # Unlike for Legacy IP, we don't specify the dest_address + # here on *BSD. OpenBSD for one will refuse to accept + # incoming packets to that address if we do. + # OpenVPN does the same (gives dest_address for Legacy IP + # but not for IPv6). + # Only Solaris needs it; hence $ifconfig_syntax_ptpv6 + ifconfig "$TUNDEV" inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up + fi fi } +destroy_tun_device() { + case "$OS" in + NetBSD|OpenBSD) # and probably others... + ifconfig "$TUNDEV" destroy + ;; + FreeBSD) + ifconfig "$TUNDEV" destroy > /dev/null 2>&1 & + ;; + esac +} + # =========== route handling ==================================== if [ -n "$IPROUTE" ]; then fix_ip_get_output () { sed -e 's/ /\n/g' | \ - sed -ne "1 s|\$|${1}|p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p};/metric/{N;p};/onlink/{p}" + sed -ne "1 s|\$|${1}|p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p}" } - # returns all routes to a destination *except* those through $TUNDEV, - # sorted by increasing metric (with absent metric as last) - list_non_loopback_routes () { - echo "$1" | grep -q : && FAMILY=-6 ROOT=::/0 || FAMILY=-4 ROOT=0/0 - # put metric in front, sort by metric, then chop off first two fields (metric and destination) - $IPROUTE $FAMILY route show to "$1" root "$ROOT" | - awk '/dev '"$TUNDEV"'/ { next; } { printf "%s %s\n", (match($0, /metric ([^ ]+)/) ? substr($0, RSTART+7, RLENGTH-7) : 4294967295), $0; }' | - sort -n | cut -d' ' -f3- - } - set_vpngateway_route() { - # We'll attempt to add a host route to the gateway through every route that matches - # its address (excluding those through TUNDEV because the goal is to avoid loopback). - echo "$VPNGATEWAY" | grep -q : && FAMILY=-6 || FAMILY=-4 - - list_non_loopback_routes "$VPNGATEWAY" | - while read LINE ; do - # We do not want to use 'replace', since a route to the gateway that already - # exists is mostly likely the correct one (e.g. the case of a reconnect attempt - # after dead-peer detection, but no change in the underlying network devices). - $IPROUTE $FAMILY route add `echo "$VPNGATEWAY $LINE" | fix_ip_get_output` 2>/dev/null - done - if [ $FAMILY != -4 ]; then - $IPROUTE $FAMILY route flush cache 2>/dev/null - fi + $IPROUTE route add `$IPROUTE route get "$VPNGATEWAY" | fix_ip_get_output` + $IPROUTE route flush cache 2>/dev/null } del_vpngateway_route() { - echo "$VPNGATEWAY" | grep -q : && FAMILY=-6 || FAMILY=-4 - $IPROUTE route $route_syntax_del "$VPNGATEWAY" - if [ $FAMILY != -4 ]; then - $IPROUTE $FAMILY route flush cache 2>/dev/null - fi + $IPROUTE route flush cache 2>/dev/null } set_default_route() { $IPROUTE route | grep '^default' | fix_ip_get_output > "$DEFAULT_ROUTE_FILE" $IPROUTE route replace default dev "$TUNDEV" + $IPROUTE route flush cache 2>/dev/null } set_network_route() { @@ -328,6 +267,7 @@ if [ -n "$IPROUTE" ]; then else $IPROUTE route replace "$NETWORK/$NETMASKLEN" dev "$NETDEV" fi + $IPROUTE route flush cache 2>/dev/null } set_exclude_route() { @@ -336,24 +276,24 @@ if [ -n "$IPROUTE" ]; then NETWORK="$1" NETMASK="$2" NETMASKLEN="$3" - list_non_loopback_routes "$NETWORK/$NETMASKLEN" | - while read LINE ; do - $IPROUTE route add `echo "$NETWORK/$NETMASKLEN $LINE" | fix_ip_get_output` 2>/dev/null - done + $IPROUTE route add `$IPROUTE route get "$NETWORK" | fix_ip_get_output "/$NETMASKLEN"` + $IPROUTE route flush cache 2>/dev/null } del_exclude_route() { # FIXME: In theory, this could delete existing routes which are - # identical to split-exclude routes specified by VPNGATEWAY + # identical to split-exclude routes specificed by VPNGATEWAY NETWORK="$1" NETMASK="$2" NETMASKLEN="$3" $IPROUTE route $route_syntax_del "$NETWORK/$NETMASKLEN" + $IPROUTE route flush cache 2>/dev/null } reset_default_route() { if [ -s "$DEFAULT_ROUTE_FILE" ]; then $IPROUTE route replace `cat "$DEFAULT_ROUTE_FILE"` + $IPROUTE route flush cache 2>/dev/null rm -f -- "$DEFAULT_ROUTE_FILE" fi } @@ -364,6 +304,7 @@ if [ -n "$IPROUTE" ]; then NETMASKLEN="$3" NETDEV="$4" $IPROUTE route $route_syntax_del "$NETWORK/$NETMASKLEN" dev "$NETDEV" + $IPROUTE route flush cache 2>/dev/null } set_ipv6_default_route() { @@ -382,18 +323,21 @@ if [ -n "$IPROUTE" ]; then else $IPROUTE -6 route replace "$NETWORK/$NETMASKLEN" dev "$NETDEV" fi - $IPROUTE -6 route flush cache 2>/dev/null + $IPROUTE route flush cache 2>/dev/null } set_ipv6_exclude_route() { + # add explicit route to keep current routing for this target + # (keep traffic separate from VPN tunnel) NETWORK="$1" NETMASKLEN="$2" - set_exclude_route "$NETWORK" nomask "$NETMASKLEN" + $IPROUTE -6 route add `$IPROUTE route get "$NETWORK" | fix_ip_get_output "/$NETMASKLEN"` + $IPROUTE route flush cache 2>/dev/null } reset_ipv6_default_route() { $IPROUTE -6 route del default dev "$TUNDEV" - $IPROUTE -6 route flush cache 2>/dev/null + $IPROUTE route flush cache 2>/dev/null } del_ipv6_network_route() { @@ -406,7 +350,7 @@ if [ -n "$IPROUTE" ]; then del_ipv6_exclude_route() { # FIXME: In theory, this could delete existing routes which are - # identical to split-exclude routes specified by VPNGATEWAY + # identical to split-exclude routes specificed by VPNGATEWAY NETWORK="$1" NETMASKLEN="$2" $IPROUTE -6 route del "$NETWORK/$NETMASKLEN" @@ -414,29 +358,19 @@ if [ -n "$IPROUTE" ]; then } else # use route command get_default_gw() { - # Intended behavior, starting with `netstat -r -n` output: - # - keep lines starting with 'default' or '0.0.0.0', but exclude bogus routes '0.0.0.0/nn' where nn != 0 - # - remove lines containing IPv6 addresses (':') - # - remove lines for link-local routes (https://superuser.com/a/1067742) - # - remove lines containing $TUNDEV (we don't want loopback) - netstat -r -n | awk '/:/ { next; } /link#/ { next; } /^(default|0\.0\.0\.0([[:space:]]|\/0))/ { print $2; exit; } /[[:space:]]'"$TUNDEV"'([[:space:]]|$)/ { next; }' + # isn't -n supposed to give --numeric output? + # apperently not... + # Get rid of lines containing IPv6 addresses (':') + # Get rid of lines for link-local routes (https://superuser.com/a/1067742) + netstat -r -n | awk '/:/ { next; } /link\#/ { next; } /^(default|0\.0\.0\.0)/ { print $2; }' } set_vpngateway_route() { - # Unlike with iproute2, there is no way to determine which current - # route(s) match the VPN gateway, so we simply find a default - # route and use its gateway. - case "$VPNGATEWAY" in - *:*) route add $route_syntax_inet6_host "$VPNGATEWAY" $route_syntax_gw "`get_ipv6_default_gw`";; - *) route add -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`";; - esac + route add -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`" } del_vpngateway_route() { - case "$VPNGATEWAY" in - *:*) route $route_syntax_del $route_syntax_inet6_host "$VPNGATEWAY" $route_syntax_gw "`get_ipv6_default_gw`";; - *) route $route_syntax_del -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`";; - esac + route $route_syntax_del -host "$VPNGATEWAY" $route_syntax_gw "`get_default_gw`" } set_default_route() { @@ -462,10 +396,8 @@ else # use route command NETWORK="$1" NETMASK="$2" NETMASKLEN="$3" - DEFAULTGW="${DEFAULTGW:-`get_default_gw`}" if [ -z "$DEFAULTGW" ]; then - echo "cannot find route for exclude route $NETWORK/$NETMASKLEN, ignoring" >&2 - return + DEFAULTGW="`get_default_gw`" fi # Add explicit route to keep traffic for this target separate # from tunnel. FIXME: We use default gateway - this is our best @@ -484,7 +416,7 @@ else # use route command reset_default_route() { if [ -s "$DEFAULT_ROUTE_FILE" ]; then - route $route_syntax_del default $route_syntax_gw `get_default_gw` $route_syntax_interface + 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 @@ -502,84 +434,54 @@ else # use route command route $route_syntax_del -net "$NETWORK" $route_syntax_netmask "$NETMASK" $route_syntax_gw "$NETGW" } - get_ipv6_default_gw() { - # Intended behavior, starting with `netstat -r -n` IPv6 output: - # - keep lines starting with 'default' or '::' - # - append %$interface to link-local routes (fe80::/10) - # - remove lines for loopback interface (lo) - # - remove lines containing $TUNDEV (we don't want loopback) - # FIXME: is there a better way to exclude loopback routes than filtering interface /^lo/? - netstat -r -n $netstat_syntax_ipv6 | awk '/^(default|::\/0)/ { if ($NF!~/^lo/ && $NF!~/'"$TUNDEV"'([[:space:]]|$)/) { print ($2~/^fe[89ab]/ ? $2"%"$NF : $2); } }' - } - set_ipv6_default_route() { - DEFAULTGW="`get_ipv6_default_gw`" - echo "$DEFAULTGW" > "$DEFAULT_ROUTE_FILE_IPV6" - route $route_syntax_del $route_syntax_inet6 default $route_syntax_gw "$DEFAULTGW" - route add $route_syntax_inet6 default $route_syntax_gw "$INTERNAL_IP6_ADDRESS" $route_syntax_interface + route add -inet6 default "$INTERNAL_IP6_ADDRESS" $route_syntax_interface } set_ipv6_network_route() { NETWORK="$1" NETMASK="$2" - DEVICE="$3" if [ -n "$4" ]; then NETGW="$4" - elif [ "$OS" = "Linux" ]; then - route add $route_syntax_inet6_net "$NETWORK/$NETMASK" dev "$DEVICE" - return else NETGW="$INTERNAL_IP6_ADDRESS" fi - route add $route_syntax_inet6_net "$NETWORK/$NETMASK" $route_syntax_gw "$NETGW" $route_syntax_interface + route add -inet6 -net "$NETWORK/$NETMASK" "$NETGW" $route_syntax_interface : } set_ipv6_exclude_route() { NETWORK="$1" NETMASK="$2" - IPV6DEFAULTGW="${IPV6DEFAULTGW:-`get_ipv6_default_gw`}" - if [ -z "$IPV6DEFAULTGW" ]; then - echo "cannot find route for exclude route $NETWORK/$NETMASKLEN, ignoring" >&2 - return - fi # Add explicit route to keep traffic for this target separate # from tunnel. FIXME: We use default gateway - this is our best # guess in absence of "ip" command to query effective route. - route add $route_syntax_inet6_net "$NETWORK/$NETMASK" "$IPV6DEFAULTGW" $route_syntax_interface + route add -inet6 -net "$NETWORK/$NETMASK" "`get_default_gw`" $route_syntax_interface : } reset_ipv6_default_route() { - if [ -s "$DEFAULT_ROUTE_FILE_IPV6" ]; then - route $route_syntax_del $route_syntax_inet6 default $route_syntax_gw "`get_ipv6_default_gw`" $route_syntax_interface - route add $route_syntax_inet6 default $route_syntax_gw `cat "$DEFAULT_ROUTE_FILE_IPV6"` - rm -f -- "$DEFAULT_ROUTE_FILE_IPV6" - fi + route $route_syntax_del -inet6 default "$INTERNAL_IP6_ADDRESS" : } del_ipv6_network_route() { NETWORK="$1" NETMASK="$2" - DEVICE="$3" if [ -n "$4" ]; then NETGW="$4" - elif [ "$OS" = "Linux" ]; then - route $route_syntax_del $route_syntax_inet6 "$NETWORK/$NETMASK" dev "$DEVICE" - return else NETGW="$INTERNAL_IP6_ADDRESS" fi - route $route_syntax_del $route_syntax_inet6 "$NETWORK/$NETMASK" $route_syntax_gw "$NETGW" + route $route_syntax_del -inet6 "$NETWORK/$NETMASK" "$NETGW" : } del_ipv6_exclude_route() { NETWORK="$1" NETMASK="$2" - route $route_syntax_del $route_syntax_inet6 "$NETWORK/$NETMASK" + route $route_syntax_del -inet6 "$NETWORK/$NETMASK" : } @@ -690,10 +592,6 @@ search $DOMAINS" close EOF fi - # For newer MacOS versions it is needed to set DNS - ACTIVE_INTERFACE=`route -n get default | grep interface | awk '{print $2}'` - ACTIVE_NETWORK_SERVICE=`networksetup -listnetworkserviceorder | grep -B 1 "$ACTIVE_INTERFACE" | head -n 1 | awk '/\([0-9]+\)/{ print }'|cut -d " " -f2-` - networksetup -setdnsservers "$ACTIVE_NETWORK_SERVICE" $INTERNAL_IP4_DNS ;; esac fi @@ -723,22 +621,17 @@ restore_resolvconf_generic() { # to list of used DNS servers if [ -n "$CISCO_SPLIT_INC" ]; then SERVICE=`echo "show State:/Network/Global/IPv4" | scutil | grep -oE '[a-fA-F0-9]{8}-([a-fA-F0-9]{4}-){3}[a-fA-F0-9]{12}'` - SERVICE_DNS=`echo "show State:/Network/Service/$SERVICE/DNS" | scutil | grep -oE '([0-9]{1,3}[\.]){3}[0-9]{1,3}'` - FILTERED_SERVICE_DNS=`echo "$SERVICE_DNS" | grep -Fv "$(echo $INTERNAL_IP4_DNS | tr ' ' '\n')" | xargs` - if [ -n "$FILTERED_SERVICE_DNS" ]; then + SERVICE_DNS=`echo "show State:/Network/Service/$SERVICE/DNS" | scutil | grep -oE '([0-9]{1,3}[\.]){3}[0-9]{1,3}' | xargs` + if [ X"$SERVICE_DNS" != X"$INTERNAL_IP4_DNS" ]; then scutil >/dev/null 2>&1 <<-EOF open get State:/Network/Service/$SERVICE/DNS - d.add ServerAddresses * ${FILTERED_SERVICE_DNS} + d.add ServerAddresses * ${SERVICE_DNS##$INTERNAL_IP4_DNS} set State:/Network/Service/$SERVICE/DNS close EOF fi fi - # For newer MacOS versions it is needed to unset DNS - ACTIVE_INTERFACE=`route -n get default | grep interface | awk '{print $2}'` - ACTIVE_NETWORK_SERVICE=`networksetup -listnetworkserviceorder | grep -B 1 "$ACTIVE_INTERFACE" | head -n 1 | awk '/\([0-9]+\)/{ print }'|cut -d " " -f2-` - networksetup -setdnsservers "$ACTIVE_NETWORK_SERVICE" Empty ;; esac fi @@ -792,7 +685,6 @@ modify_resolvconf_openwrt() { restore_resolvconf_openwrt() { remove_dns $OPENWRT_INTERFACE } - # === resolv.conf handling via /sbin/resolvconf (Debian, Ubuntu, Gentoo)) ========= modify_resolvconf_manager() { @@ -812,8 +704,6 @@ restore_resolvconf_manager() { /sbin/resolvconf -d $TUNDEV } -# === resolv.conf handling via systemd-resolved ========= - AF_INET=2 get_if_index() { @@ -907,11 +797,6 @@ modify_resolvconf_unbound() { /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} - # flush infra cache - for i in $INTERNAL_IP4_DNS ; do - /usr/sbin/unbound-control flush_infra "$i" - done - fi } @@ -923,24 +808,30 @@ restore_resolvconf_unbound() { fi } -# === resolv.conf handling via resolvd (OpenBSD) ========= - -modify_resolvconf_resolvd() { - /sbin/route nameserver $TUNDEV $INTERNAL_IP4_DNS $INTERNAL_IP6_DNS -} - -restore_resolvconf_resolvd() { - /sbin/route nameserver $TUNDEV -} - # ========= Toplevel state handling ======================================= +kernel_is_2_6_or_above() { + case `uname -r` in + 1.*|2.[012345]*) + return 1 + ;; + *) + return 0 + ;; + esac +} + do_pre_init() { if [ "$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 @@ -948,12 +839,18 @@ do_pre_init() { [ -x /sbin/restorecon ] && /sbin/restorecon /dev/net/tun fi # workaround for a possible latency caused by udev, sleep max. 10s - for x in $(seq 100) ; do - (exec 6<> /dev/net/tun) > /dev/null 2>&1 && break; - sleep 0.1 - done + if kernel_is_2_6_or_above ; then + for x in `seq 100` ; do + (exec 6<> /dev/net/tun) > /dev/null 2>&1 && break; + sleep 0.1 + done + fi fi - elif [ "$OS" = "FreeBSD" -o "$OS" = "DragonFly" ]; then + elif [ "$OS" = "FreeBSD" ]; then + if ! kldstat -q -m if_tun > /dev/null; then + kldload if_tun + fi + if ! ifconfig $TUNDEV > /dev/null; then ifconfig $TUNDEV create fi @@ -982,10 +879,7 @@ do_connect() { echo fi - case "$VPNGATEWAY" in - 127.*|::1) ;; # localhost (probably proxy) - *) set_vpngateway_route ;; - esac + set_vpngateway_route do_ifconfig if [ -n "$CISCO_SPLIT_EXC" ]; then i=0 @@ -993,10 +887,7 @@ do_connect() { eval NETWORK="\${CISCO_SPLIT_EXC_${i}_ADDR}" eval NETMASK="\${CISCO_SPLIT_EXC_${i}_MASK}" eval NETMASKLEN="\${CISCO_SPLIT_EXC_${i}_MASKLEN}" - case "$NETWORK" in - 0.*|127.*|169.254.*) echo "ignoring non-forwardable exclude route $NETWORK/$NETMASKLEN" >&2 ;; - *) set_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN" ;; - esac + set_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN" i=`expr $i + 1` done fi @@ -1023,6 +914,10 @@ do_connect() { fi i=`expr $i + 1` done + for i in $INTERNAL_IP4_DNS ; do + echo "$i" | grep : >/dev/null || \ + set_network_route "$i" "255.255.255.255" "32" "$TUNDEV" + done elif [ -n "$INTERNAL_IP4_ADDRESS" ]; then set_default_route fi @@ -1038,6 +933,11 @@ do_connect() { fi i=`expr $i + 1` done + for i in $INTERNAL_IP4_DNS ; do + if echo "$i" | grep : >/dev/null; then + set_ipv6_network_route "$i" "128" "$TUNDEV" + fi + done elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then set_ipv6_default_route fi @@ -1063,6 +963,9 @@ do_disconnect() { fi i=`expr $i + 1` done + for i in $INTERNAL_IP4_DNS ; do + del_network_route "$i" "255.255.255.255" "32" "$TUNDEV" + done else reset_default_route fi @@ -1072,10 +975,7 @@ do_disconnect() { eval NETWORK="\${CISCO_SPLIT_EXC_${i}_ADDR}" eval NETMASK="\${CISCO_SPLIT_EXC_${i}_MASK}" eval NETMASKLEN="\${CISCO_SPLIT_EXC_${i}_MASKLEN}" - case "$NETWORK" in - 0.*|127.*|169.254.*) ;; # ignoring non-forwardable exclude route - *) del_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN" ;; - esac + del_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN" i=`expr $i + 1` done fi @@ -1101,6 +1001,9 @@ do_disconnect() { fi i=`expr $i + 1` done + for i in $INTERNAL_IP6_DNS ; do + del_ipv6_network_route "$i" "128" "$TUNDEV" + done elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then reset_ipv6_default_route fi @@ -1123,32 +1026,19 @@ do_disconnect() { if [ -n "$INTERNAL_IP6_NETMASK" ]; then $IPROUTE -6 addr del $INTERNAL_IP6_NETMASK dev $TUNDEV fi - $IPROUTE link set dev "$TUNDEV" down else if [ -n "$INTERNAL_IP4_ADDRESS" ]; then - ifconfig "$TUNDEV" `ifconfig_syntax_del "$INTERNAL_IP4_ADDRESS"` + ifconfig "$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 "$TUNDEV" `ifconfig_syntax_del "$INTERNAL_IP6_NETMASK"` + ifconfig "$TUNDEV" inet6 del $INTERNAL_IP6_NETMASK fi - ifconfig "$TUNDEV" down fi - case "$OS" in - NetBSD|OpenBSD) # and probably others... - ifconfig "$TUNDEV" destroy - ;; - FreeBSD|DragonFly) - ifconfig "$TUNDEV" destroy > /dev/null 2>&1 & - ;; - esac -} - -do_attempt_reconnect() { - set_vpngateway_route + destroy_tun_device } #### Main @@ -1179,8 +1069,6 @@ case "$reason" in # be left with a route to the VPN server through the VPN # itself, which would need to be fixed. run_hooks attempt-reconnect - do_attempt_reconnect - run_hooks post-attempt-reconnect ;; reconnect) # After successfully re-establishing the session. diff --git a/vpnc-script.spec b/vpnc-script.spec index 9c57b1a..d3ce415 100644 --- a/vpnc-script.spec +++ b/vpnc-script.spec @@ -1,18 +1,17 @@ -%global git_date 20230907 -%global git_commit_hash 5b9e7e4c +%global git_date 20200918 +%global git_commit_hash 3885f8 Name: vpnc-script Version: %{git_date} -Release: %autorelease -e git%{git_commit_hash} +Release: 1.git%{git_commit_hash}%{?dist} Summary: Routing setup script for vpnc and openconnect BuildArch: noarch Requires: iproute Requires: which -# Automatically converted from old format: GPLv2+ - review is highly recommended. -License: GPL-2.0-or-later -URL: https://gitlab.com/openconnect/vpnc-scripts/ +License: GPLv2+ +URL: http://git.infradead.org/users/dwmw2/vpnc-scripts.git/ Source0: vpnc-script %description @@ -35,4 +34,56 @@ install -m 0755 vpnc-script \ %{_sysconfdir}/vpnc/vpnc-script %changelog -%autochangelog +* Tue Sep 29 2020 Nikos Mavrogiannopoulos +- Updated to latest upstream vpnc-script + +* Wed Jul 29 2020 Fedora Release Engineering - 20171004-8.git6f87b0f +- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild + +* Fri Jan 31 2020 Fedora Release Engineering - 20171004-7.git6f87b0f +- Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild + +* Sat Jul 27 2019 Fedora Release Engineering - 20171004-6.git6f87b0f +- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild + +* Sun Feb 03 2019 Fedora Release Engineering - 20171004-5.git6f87b0f +- Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild + +* Sat Dec 01 2018 James Hennessy +- Fixed issue where vpnc-script is using resolvconf on systems where "resolve" isn't enabled in /etc/nsswitch. + +* Sat Jul 14 2018 Fedora Release Engineering - 20171004-3.git6f87b0f +- Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild + +* Fri Feb 09 2018 Fedora Release Engineering - 20171004-2.git6f87b0f +- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild + +* Thu Oct 5 2017 Nikos Mavrogiannopoulos - 20171004-1.git6f87b0f +- Fixed issue with systemd-resolved (#1497750) + +* Mon Aug 21 2017 Nikos Mavrogiannopoulos - 20170821-1.git6f87b0f +- new upstream release +- removed dependency on net-tools and added on iproute (#1481164) + +* Thu Jul 27 2017 Fedora Release Engineering - 20140805-6.gitdf5808b +- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild + +* Sat Feb 11 2017 Fedora Release Engineering - 20140805-5.gitdf5808b +- Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild + +* Fri Feb 05 2016 Fedora Release Engineering - 20140805-4.gitdf5808b +- Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild + +* Fri Jun 19 2015 Fedora Release Engineering - 20140805-3.gitdf5808b +- Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild + +* Thu Nov 20 2014 Nikos Mavrogiannopoulos - 20140805-2.gitdf5808b +- Added dependency on which (#1068899) +- Added dependency on net-tools (#1007363) + +* Wed Oct 01 2014 Nikos Mavrogiannopoulos - 20140805-1.gitdf5808b +- new upstream release (includes unbound patch) + +* Tue Aug 05 2014 Nikos Mavrogiannopoulos - 20140705-1.git6201ebd +- new package +