diff options
Diffstat (limited to 'pkg/osx/client.up.sh')
| -rwxr-xr-x | pkg/osx/client.up.sh | 1521 |
1 files changed, 1521 insertions, 0 deletions
diff --git a/pkg/osx/client.up.sh b/pkg/osx/client.up.sh new file mode 100755 index 0000000..a713c10 --- /dev/null +++ b/pkg/osx/client.up.sh @@ -0,0 +1,1521 @@ +#!/bin/bash -e +# Note: must be bash; uses bash-specific tricks +# +# ****************************************************************************************************************** +# Copyright by Tunnelblick. Redistributed under GPL as part of Bitmask. +# This Tunnelblick script does everything! It handles TUN and TAP interfaces, +# pushed configurations, DHCP with DNS and SMB, and renewed DHCP leases. :) +# +# This is the "Up" version of the script, executed after the interface is +# initialized. +# +# Created by: Nick Williams (using original code and parts of old Tblk scripts) +# Modifed by: Jonathan K. Bullard for Mountain Lion +# Adapted to use by Bitmask by: Kali Kaneko +# +# ****************************************************************************************************************** + + +########################################################################################## +# @param String message - The message to log +logMessage() +{ + echo "${@}" +} + +########################################################################################## +# @param String message - The message to log +logDebugMessage() +{ + if ${ARG_EXTRA_LOGGING} ; then + echo "${@}" + fi +} + +########################################################################################## +# log a change to a setting +# @param String filters - empty, or one or two '#' if not performing the change +# @param String name of setting that is being changed +# @param String new value +# @param String old value +logChange() +{ + if [ "$1" = "" ] ; then + if [ "$3" = "$4" ] ; then + echo "Did not change $2 setting of '$3' (but re-set it)" + else + echo "Changed $2 setting from '$4' to '$3'" + fi + else + echo "Did not change $2 setting of '$4'" + fi +} + +########################################################################################## +# @param String string - Content to trim +trim() +{ + echo ${@} +} + +########################################################################################## +disable_ipv6() { + +# Disables IPv6 on each enabled (active) network service on which it is set to the OS X default "IPv6 Automatic". +# +# For each such service, outputs a line with the name of the service. +# (A separate line is output for each name because a name may include spaces.) +# +# The 'restore_ipv6' routine in client.down.sh undoes the actions performed by this routine. +# +# NOTE: Done only for enabled services because some versions of OS X enable the service if this IPv6 setting is changed. +# +# This only works for OS X 10.5 and higher (10.4 does not implement IPv6.) + + if [ "$OSVER" = "10.4" ] ; then + exit + fi + + # Get list of services and remove the first line which contains a heading + dipv6_services="$( networksetup -listallnetworkservices | sed -e '1,1d')" + + # Go through the list disabling IPv6 for enabled services, and outputting lines with the names of the services + printf %s "$dipv6_services +" | \ + while IFS= read -r dipv6_service ; do + + # If first character of a line is an asterisk, the service is disabled, so we skip it + if [ "${dipv6_service:0:1}" != "*" ] ; then + dipv6_ipv6_status="$( networksetup -getinfo "$dipv6_service" | grep 'IPv6: ' | sed -e 's/IPv6: //')" + if [ "$dipv6_ipv6_status" = "Automatic" ] ; then + networksetup -setv6off "$dipv6_service" + echo "$dipv6_service" + fi + fi + + done +} + +########################################################################################## +# @param String[] dnsServers - The name servers to use +# @param String domainName - The domain name to use +# @param \optional String[] winsServers - The SMB servers to use +# @param \optional String[] searchDomains - The search domains to use +# +# Throughout this routine: +# MAN_ is a prefix for manually set parameters +# DYN_ is a prefix for dynamically set parameters (by a "push", config file, or command line option) +# CUR_ is a prefix for the current parameters (as arbitrated by OS X between manual and DHCP data) +# FIN_ is a prefix for the parameters we want to end up with +# SKP_ is a prefix for an empty string or a "#" used to control execution of statements that set parameters in scutil +# +# DNS_SA is a suffix for the ServerAddresses value in a System Configuration DNS key +# DNS_SD is a suffix for the SearchDomains value in a System Configuration DNS key +# DNS_DN is a suffix for the DomainName value in a System Configuration DNS key +# +# SMB_NN is a suffix for the NetBIOSName value in a System Configuration SMB key +# SMB_WG is a suffix for the Workgroup value in a System Configuration SMB key +# SMB_WA is a suffix for the WINSAddresses value in a System Configuration SMB key +# +# So, for example, MAN_SMB_NN is the manually set NetBIOSName value (or the empty string if not set manually) + +setDnsServersAndDomainName() +{ + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + + PSID="$( scutil <<-EOF | + open + show State:/Network/Global/IPv4 + quit +EOF +grep PrimaryService | sed -e 's/.*PrimaryService : //' +)" + + set -e # resume abort on error + + MAN_DNS_CONFIG="$( scutil <<-EOF | + open + show Setup:/Network/Service/${PSID}/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + + MAN_SMB_CONFIG="$( scutil <<-EOF | + open + show Setup:/Network/Service/${PSID}/SMB + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + CUR_DNS_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Global/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + + CUR_SMB_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Global/SMB + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + +# Set up the DYN_... variables to contain what is asked for (dynamically, by a 'push' directive, for example) + + declare -a vDNS=("${!1}") + declare -a vSMB=("${!3}") + declare -a vSD=("${!4}") + + if [ ${#vDNS[*]} -eq 0 ] ; then + readonly DYN_DNS_SA="" + else + readonly DYN_DNS_SA="${!1}" + fi + + if [ ${#vSMB[*]} -eq 0 ] ; then + readonly DYN_SMB_WA="" + else + readonly DYN_SMB_WA="${!3}" + fi + + if [ ${#vSD[*]} -eq 0 ] ; then + readonly DYN_DNS_SD="" + else + readonly DYN_DNS_SD="${!4}" + fi + + DYN_DNS_DN="$2" + + # The variables + # DYN_SMB_WG + # DYN_SMB_NN + # are left empty. There isn't a way for OpenVPN to set them. + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: MAN_DNS_CONFIG = ${MAN_DNS_CONFIG}" + logDebugMessage "DEBUG: MAN_SMB_CONFIG = ${MAN_SMB_CONFIG}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: CUR_DNS_CONFIG = ${CUR_DNS_CONFIG}" + logDebugMessage "DEBUG: CUR_SMB_CONFIG = ${CUR_SMB_CONFIG}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: DYN_DNS_DN = ${DYN_DNS_DN}; DYN_DNS_SA = ${DYN_DNS_SA}; DYN_DNS_SD = ${DYN_DNS_SD}" + logDebugMessage "DEBUG: DYN_SMB_NN = ${DYN_SMB_NN}; DYN_SMB_WG = ${DYN_SMB_WG}; DYN_SMB_WA = ${DYN_SMB_WA}" + +# Set up the MAN_... variables to contain manual network settings + + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + + if echo "${MAN_DNS_CONFIG}" | grep -q "DomainName" ; then + readonly MAN_DNS_DN="$( trim "$( echo "${MAN_DNS_CONFIG}" | sed -e 's/^.*DomainName[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )" )" + else + readonly MAN_DNS_DN=""; + fi + if echo "${MAN_DNS_CONFIG}" | grep -q "ServerAddresses" ; then + readonly MAN_DNS_SA="$( trim "$( echo "${MAN_DNS_CONFIG}" | sed -e 's/^.*ServerAddresses[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )" )" + else + readonly MAN_DNS_SA=""; + fi + if echo "${MAN_DNS_CONFIG}" | grep -q "SearchDomains" ; then + readonly MAN_DNS_SD="$( trim "$( echo "${MAN_DNS_CONFIG}" | sed -e 's/^.*SearchDomains[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )" )" + else + readonly MAN_DNS_SD=""; + fi + if echo "${MAN_SMB_CONFIG}" | grep -q "NetBIOSName" ; then + readonly MAN_SMB_NN="$( trim "$( echo "${MAN_SMB_CONFIG}" | sed -e 's/^.*NetBIOSName : \([^[:space:]]*\).*$/\1/g' )" )" + else + readonly MAN_SMB_NN=""; + fi + if echo "${MAN_SMB_CONFIG}" | grep -q "Workgroup" ; then + readonly MAN_SMB_WG="$( trim "$( echo "${MAN_SMB_CONFIG}" | sed -e 's/^.*Workgroup : \([^[:space:]]*\).*$/\1/g' )" )" + else + readonly MAN_SMB_WG=""; + fi + if echo "${MAN_SMB_CONFIG}" | grep -q "WINSAddresses" ; then + readonly MAN_SMB_WA="$( trim "$( echo "${MAN_SMB_CONFIG}" | sed -e 's/^.*WINSAddresses[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )" )" + else + readonly MAN_SMB_WA=""; + fi + + set -e # resume abort on error + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: MAN_DNS_DN = ${MAN_DNS_DN}; MAN_DNS_SA = ${MAN_DNS_SA}; MAN_DNS_SD = ${MAN_DNS_SD}" + logDebugMessage "DEBUG: MAN_SMB_NN = ${MAN_SMB_NN}; MAN_SMB_WG = ${MAN_SMB_WG}; MAN_SMB_WA = ${MAN_SMB_WA}" + +# Set up the CUR_... variables to contain the current network settings (from manual or DHCP, as arbitrated by OS X + + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + + if echo "${CUR_DNS_CONFIG}" | grep -q "DomainName" ; then + readonly CUR_DNS_DN="$(trim "$( echo "${CUR_DNS_CONFIG}" | sed -e 's/^.*DomainName : \([^[:space:]]*\).*$/\1/g' )")" + else + readonly CUR_DNS_DN=""; + fi + if echo "${CUR_DNS_CONFIG}" | grep -q "ServerAddresses" ; then + readonly CUR_DNS_SA="$(trim "$( echo "${CUR_DNS_CONFIG}" | sed -e 's/^.*ServerAddresses[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )")" + else + readonly CUR_DNS_SA=""; + fi + if echo "${CUR_DNS_CONFIG}" | grep -q "SearchDomains" ; then + readonly CUR_DNS_SD="$(trim "$( echo "${CUR_DNS_CONFIG}" | sed -e 's/^.*SearchDomains[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )")" + else + readonly CUR_DNS_SD=""; + fi + if echo "${CUR_SMB_CONFIG}" | grep -q "NetBIOSName" ; then + readonly CUR_SMB_NN="$(trim "$( echo "${CUR_SMB_CONFIG}" | sed -e 's/^.*NetBIOSName : \([^[:space:]]*\).*$/\1/g' )")" + else + readonly CUR_SMB_NN=""; + fi + if echo "${CUR_SMB_CONFIG}" | grep -q "Workgroup" ; then + readonly CUR_SMB_WG="$(trim "$( echo "${CUR_SMB_CONFIG}" | sed -e 's/^.*Workgroup : \([^[:space:]]*\).*$/\1/g' )")" + else + readonly CUR_SMB_WG=""; + fi + if echo "${CUR_SMB_CONFIG}" | grep -q "WINSAddresses" ; then + readonly CUR_SMB_WA="$(trim "$( echo "${CUR_SMB_CONFIG}" | sed -e 's/^.*WINSAddresses[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )")" + else + readonly CUR_SMB_WA=""; + fi + + set -e # resume abort on error + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: CUR_DNS_DN = ${CUR_DNS_DN}; CUR_DNS_SA = ${CUR_DNS_SA}; CUR_DNS_SD = ${CUR_DNS_SD}" + logDebugMessage "DEBUG: CUR_SMB_NN = ${CUR_SMB_NN}; CUR_SMB_WG = ${CUR_SMB_WG}; CUR_SMB_WA = ${CUR_SMB_WA}" + +# set up the FIN_... variables with what we want to set things to + + # Three FIN_... variables are simple -- no aggregation is done for them + + if [ "${DYN_DNS_DN}" != "" ] ; then + if [ "${MAN_DNS_DN}" != "" ] ; then + logMessage "WARNING: Ignoring DomainName '$DYN_DNS_DN' because DomainName was set manually" + readonly FIN_DNS_DN="${MAN_DNS_DN}" + else + readonly FIN_DNS_DN="${DYN_DNS_DN}" + fi + else + readonly FIN_DNS_DN="${CUR_DNS_DN}" + fi + + if [ "${DYN_SMB_NN}" != "" ] ; then + if [ "${MAN_SMB_NN}" != "" ] ; then + logMessage "WARNING: Ignoring NetBIOSName '$DYN_SMB_NN' because NetBIOSName was set manually" + readonly FIN_SMB_NN="${MAN_SMB_NN}" + else + readonly FIN_SMB_NN="${DYN_SMB_NN}" + fi + else + readonly FIN_SMB_NN="${CUR_SMB_NN}" + fi + + if [ "${DYN_SMB_WG}" != "" ] ; then + if [ "${MAN_SMB_WG}" != "" ] ; then + logMessage "WARNING: Ignoring Workgroup '$DYN_SMB_WG' because Workgroup was set manually" + readonly FIN_SMB_WG="${MAN_SMB_WG}" + else + readonly FIN_SMB_WG="${DYN_SMB_WG}" + fi + else + readonly FIN_SMB_WG="${CUR_SMB_WG}" + fi + + # DNS ServerAddresses (FIN_DNS_SA) are aggregated for 10.4 and 10.5 + if [ ${#vDNS[*]} -eq 0 ] ; then + readonly FIN_DNS_SA="${CUR_DNS_SA}" + else + if [ "${MAN_DNS_SA}" != "" ] ; then + logMessage "WARNING: Ignoring ServerAddresses '$DYN_DNS_SA' because ServerAddresses was set manually" + readonly FIN_DNS_SA="${CUR_DNS_SA}" + else + case "${OSVER}" in + 10.4 | 10.5 ) + # We need to remove duplicate DNS entries, so that our reference list matches MacOSX's + SDNS="$( echo "${DYN_DNS_SA}" | tr ' ' '\n' )" + (( i=0 )) + for n in "${vDNS[@]}" ; do + if echo "${SDNS}" | grep -q "${n}" ; then + unset vDNS[${i}] + fi + (( i++ )) + done + if [ ${#vDNS[*]} -gt 0 ] ; then + readonly FIN_DNS_SA="$( trim "${DYN_DNS_SA}" "${vDNS[*]}" )" + else + readonly FIN_DNS_SA="${DYN_DNS_SA}" + fi + logMessage "Aggregating ServerAddresses because running on OS X 10.4 or 10.5" + ;; + * ) + # Do nothing - in 10.6 and higher -- we don't aggregate our configurations, apparently + readonly FIN_DNS_SA="${DYN_DNS_SA}" + logMessage "Not aggregating ServerAddresses because running on OS X 10.6 or higher" + ;; + esac + fi + fi + + # SMB WINSAddresses (FIN_SMB_WA) are aggregated for 10.4 and 10.5 + if [ ${#vSMB[*]} -eq 0 ] ; then + readonly FIN_SMB_WA="${CUR_SMB_WA}" + else + if [ "${MAN_SMB_WA}" != "" ] ; then + logMessage "WARNING: Ignoring WINSAddresses '$DYN_SMB_WA' because WINSAddresses was set manually" + readonly FIN_SMB_WA="${MAN_SMB_WA}" + else + case "${OSVER}" in + 10.4 | 10.5 ) + # We need to remove duplicate SMB entries, so that our reference list matches MacOSX's + SSMB="$( echo "${DYN_SMB_WA}" | tr ' ' '\n' )" + (( i=0 )) + for n in "${vSMB[@]}" ; do + if echo "${SSMB}" | grep -q "${n}" ; then + unset vSMB[${i}] + fi + (( i++ )) + done + if [ ${#vSMB[*]} -gt 0 ] ; then + readonly FIN_SMB_WA="$( trim "${DYN_SMB_WA}" "${vSMB[*]}" )" + else + readonly FIN_SMB_WA="${DYN_SMB_WA}" + fi + logMessage "Aggregating WINSAddresses because running on OS X 10.4 or 10.5" + ;; + * ) + # Do nothing - in 10.6 and higher -- we don't aggregate our configurations, apparently + readonly FIN_SMB_WA="${DYN_SMB_WA}" + logMessage "Not aggregating WINSAddresses because running on OS X 10.6 or higher" + ;; + esac + fi + fi + + # DNS SearchDomains (FIN_DNS_SD) is treated specially + # + # OLD BEHAVIOR: + # if SearchDomains was not set manually, we set SearchDomains to the DomainName + # else + # In OS X 10.4-10.5, we add the DomainName to the end of any manual SearchDomains (unless it is already there) + # In OS X 10.6+, if SearchDomains was entered manually, we ignore the DomainName + # else we set SearchDomains to the DomainName + # + # NEW BEHAVIOR (done if ARG_PREPEND_DOMAIN_NAME is "true"): + # + # if SearchDomains was entered manually, we do nothing + # else we PREpend new SearchDomains (if any) to the existing SearchDomains (NOT replacing them) + # and PREpend DomainName to that + # + # (done if ARG_PREPEND_DOMAIN_NAME is "false" and there are new SearchDomains from DOMAIN-SEARCH): + # + # if SearchDomains was entered manually, we do nothing + # else we PREpend any new SearchDomains to the existing SearchDomains (NOT replacing them) + # + # This behavior is meant to behave like Linux with Network Manager and Windows + + if "${ARG_PREPEND_DOMAIN_NAME}" ; then + if [ "${MAN_DNS_SD}" = "" ] ; then + if [ "${DYN_DNS_SD}" != "" ] ; then + if ! echo "${CUR_DNS_SD}" | tr ' ' '\n' | grep -q "${DYN_DNS_SD}" ; then + logMessage "Prepending '${DYN_DNS_SD}' to search domains '${CUR_DNS_SD}' because the search domains were not set manually and 'Prepend domain name to search domains' was selected" + readonly TMP_DNS_SD="$( trim "${DYN_DNS_SD}" "${CUR_DNS_SD}" )" + else + logMessage "Not prepending '${DYN_DNS_SD}' to search domains '${CUR_DNS_SD}' because it is already there" + readonly TMP_DNS_SD="${CUR_DNS_SD}" + fi + else + readonly TMP_DNS_SD="${CUR_DNS_SD}" + fi + if [ "${FIN_DNS_DN}" != "" -a "${FIN_DNS_DN}" != "localdomain" ] ; then + if ! echo "${TMP_DNS_SD}" | tr ' ' '\n' | grep -q "${FIN_DNS_DN}" ; then + logMessage "Prepending '${FIN_DNS_DN}' to search domains '${TMP_DNS_SD}' because the search domains were not set manually and 'Prepend domain name to search domains' was selected" + readonly FIN_DNS_SD="$( trim "${FIN_DNS_DN}" "${TMP_DNS_SD}" )" + else + logMessage "Not prepending '${FIN_DNS_DN}' to search domains '${TMP_DNS_SD}' because it is already there" + readonly FIN_DNS_SD="${TMP_DNS_SD}" + fi + else + readonly FIN_DNS_SD="${TMP_DNS_SD}" + fi + else + if [ "${DYN_DNS_SD}" != "" ] ; then + logMessage "WARNING: Not prepending '${DYN_DNS_SD}' to search domains '${CUR_DNS_SD}' because the search domains were set manually" + fi + if [ "${FIN_DNS_DN}" != "" ] ; then + logMessage "WARNING: Not prepending domain '${FIN_DNS_DN}' to search domains '${CUR_DNS_SD}' because the search domains were set manually" + fi + readonly FIN_DNS_SD="${CUR_DNS_SD}" + fi + else + if [ "${DYN_DNS_SD}" != "" ] ; then + if [ "${MAN_DNS_SD}" = "" ] ; then + logMessage "Prepending '${DYN_DNS_SD}' to search domains '${CUR_DNS_SD}' because the search domains were not set manually but were set via OpenVPN and 'Prepend domain name to search domains' was not selected" + readonly FIN_DNS_SD="$( trim "${DYN_DNS_SD}" "${CUR_DNS_SD}" )" + else + logMessage "WARNING: Not prepending '${DYN_DNS_SD}' to search domains '${CUR_DNS_SD}' because the search domains were set manually" + readonly FIN_DNS_SD="${CUR_DNS_SD}" + fi + else + if [ "${FIN_DNS_DN}" != "" -a "${FIN_DNS_DN}" != "localdomain" ] ; then + case "${OSVER}" in + 10.4 | 10.5 ) + if ! echo "${MAN_DNS_SD}" | tr ' ' '\n' | grep -q "${FIN_DNS_DN}" ; then + logMessage "Appending '${FIN_DNS_DN}' to search domains '${CUR_DNS_SD}' that were set manually because running under OS X 10.4 or 10.5 and 'Prepend domain name to search domains' was not selected" + readonly FIN_DNS_SD="$( trim "${MAN_DNS_SD}" "${FIN_DNS_DN}" )" + else + logMessage "Not appending '${FIN_DNS_DN}' to search domains '${CUR_DNS_SD}' because it is already in the search domains that were set manually and 'Prepend domain name to search domains' was not selected" + readonly FIN_DNS_SD="${CUR_DNS_SD}" + fi + ;; + * ) + if [ "${MAN_DNS_SD}" = "" ] ; then + logMessage "Setting search domains to '${FIN_DNS_DN}' because running under OS X 10.6 or higher and the search domains were not set manually and 'Prepend domain name to search domains' was not selected" + readonly FIN_DNS_SD="${FIN_DNS_DN}" + else + logMessage "Not replacing search domains '${CUR_DNS_SD}' with '${FIN_DNS_DN}' because the search domains were set manually and 'Prepend domain name to search domains' was not selected" + readonly FIN_DNS_SD="${CUR_DNS_SD}" + fi + ;; + esac + else + readonly FIN_DNS_SD="${CUR_DNS_SD}" + fi + fi + fi + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: FIN_DNS_DN = ${FIN_DNS_DN}; FIN_DNS_SA = ${FIN_DNS_SA}; FIN_DNS_SD = ${FIN_DNS_SD}" + logDebugMessage "DEBUG: FIN_SMB_NN = ${FIN_SMB_NN}; FIN_SMB_WG = ${FIN_SMB_WG}; FIN_SMB_WA = ${FIN_SMB_WA}" + +# Set up SKP_... variables to inhibit scutil from making some changes + + # SKP_DNS_... and SKP_SMB_... are used to comment out individual items that are not being set + if [ "${FIN_DNS_DN}" = "" -o "${FIN_DNS_DN}" = "${CUR_DNS_DN}" ] ; then + SKP_DNS_DN="#" + else + SKP_DNS_DN="" + fi + if [ "${FIN_DNS_SA}" = "" -o "${FIN_DNS_SA}" = "${CUR_DNS_SA}" ] ; then + SKP_DNS_SA="#" + else + SKP_DNS_SA="" + fi + if [ "${FIN_DNS_SD}" = "" -o "${FIN_DNS_SD}" = "${CUR_DNS_SD}" ] ; then + SKP_DNS_SD="#" + else + SKP_DNS_SD="" + fi + if [ "${FIN_SMB_NN}" = "" -o "${FIN_SMB_NN}" = "${CUR_SMB_NN}" ] ; then + SKP_SMB_NN="#" + else + SKP_SMB_NN="" + fi + if [ "${FIN_SMB_WG}" = "" -o "${FIN_SMB_WG}" = "${CUR_SMB_WG}" ] ; then + SKP_SMB_WG="#" + else + SKP_SMB_WG="" + fi + if [ "${FIN_SMB_WA}" = "" -o "${FIN_SMB_WA}" = "${CUR_SMB_WA}" ] ; then + SKP_SMB_WA="#" + else + SKP_SMB_WA="" + fi + + # if any DNS items should be set, set all that have values + if [ "${SKP_DNS_DN}${SKP_DNS_SA}${SKP_DNS_SD}" = "###" ] ; then + readonly SKP_DNS="#" + else + readonly SKP_DNS="" + if [ "${FIN_DNS_DN}" != "" ] ; then + SKP_DNS_DN="" + fi + if [ "${FIN_DNS_SA}" != "" ] ; then + SKP_DNS_SA="" + fi + if [ "${FIN_DNS_SD}" != "" ] ; then + SKP_DNS_SD="" + fi + fi + + # if any SMB items should be set, set all that have values + if [ "${SKP_SMB_NN}${SKP_SMB_WG}${SKP_SMB_WA}" = "###" ] ; then + readonly SKP_SMB="#" + else + readonly SKP_SMB="" + if [ "${FIN_SMB_NN}" != "" ] ; then + SKP_SMB_NN="" + fi + if [ "${FIN_SMB_WG}" != "" ] ; then + SKP_SMB_WG="" + fi + if [ "${FIN_SMB_WA}" != "" ] ; then + SKP_SMB_WA="" + fi + fi + + readonly SKP_DNS_SA SKP_DNS_SD SKP_DNS_DN + readonly SKP_SMB_NN SKP_SMB_WG SKP_SMB_WA + +# special-case fiddling: + + # in 10.8 and higher, ServerAddresses and SearchDomains must be set via the Setup: key in addition to the State: key + # in 10.7 if ServerAddresses or SearchDomains are manually set, ServerAddresses and SearchDomains must be similarly set with the Setup: key in addition to the State: key + # + # we pass a flag indicating whether we've done that to the other scripts in 'bAlsoUsingSetupKeys' + + case "${OSVER}" in + 10.4 | 10.5 | 10.6 ) + logDebugMessage "DEBUG: OS X 10.4-10.6, so will modify settings using only State:" + readonly SKP_SETUP_DNS="#" + readonly bAlsoUsingSetupKeys="false" + ;; + 10.7 ) + if [ "${MAN_DNS_SA}" = "" -a "${MAN_DNS_SD}" = "" ] ; then + logDebugMessage "DEBUG: OS X 10.7 and neither ServerAddresses nor SearchDomains were set manually, so will modify DNS settings using only State:" + readonly SKP_SETUP_DNS="#" + readonly bAlsoUsingSetupKeys="false" + else + logDebugMessage "DEBUG: OS X 10.7 and ServerAddresses or SearchDomains were set manually, so will modify DNS settings using Setup: in addition to State:" + readonly SKP_SETUP_DNS="" + readonly bAlsoUsingSetupKeys="true" + fi + ;; + * ) + logDebugMessage "DEBUG: OS X 10.8 or higher, so will modify DNS settings using Setup: in addition to State:" + readonly SKP_SETUP_DNS="" + readonly bAlsoUsingSetupKeys="true" + ;; + esac + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: SKP_DNS = ${SKP_DNS}; SKP_DNS_SA = ${SKP_DNS_SA}; SKP_DNS_SD = ${SKP_DNS_SD}; SKP_DNS_DN = ${SKP_DNS_DN}" + logDebugMessage "DEBUG: SKP_SETUP_DNS = ${SKP_SETUP_DNS}" + logDebugMessage "DEBUG: SKP_SMB = ${SKP_SMB}; SKP_SMB_NN = ${SKP_SMB_NN}; SKP_SMB_WG = ${SKP_SMB_WG}; SKP_SMB_WA = ${SKP_SMB_WA}" + + set +e # "grep" will return error status (1) if no matches are found, so don't fail if not found + original_resolver_contents="$( grep -v '#' < /etc/resolv.conf )" + set -e # resume abort on error + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: /etc/resolve = ${original_resolver_contents}" + logDebugMessage "DEBUG:" + + set +e # scutil --dns will return error status in case dns is already down, so don't fail if no dns found + scutil_dns="$( scutil --dns)" + set -e # resume abort on error + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: scutil --dns BEFORE CHANGES = ${scutil_dns}" + logDebugMessage "DEBUG:" + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: Configuration changes:" + logDebugMessage "DEBUG: ${SKP_DNS}${SKP_DNS_SA}ADD State: ServerAddresses ${FIN_DNS_SA}" + logDebugMessage "DEBUG: ${SKP_DNS}${SKP_DNS_SD}ADD State: SearchDomains ${FIN_DNS_SD}" + logDebugMessage "DEBUG: ${SKP_DNS}${SKP_DNS_DN}ADD State: DomainName ${FIN_DNS_DN}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: ${SKP_SETUP_DNS}${SKP_DNS}${SKP_DNS_SA}ADD Setup: ServerAddresses ${FIN_DNS_SA}" + logDebugMessage "DEBUG: ${SKP_SETUP_DNS}${SKP_DNS}${SKP_DNS_SD}ADD Setup: SearchDomains ${FIN_DNS_SD}" + logDebugMessage "DEBUG: ${SKP_SETUP_DNS}${SKP_DNS}${SKP_DNS_DN}ADD Setup: DomainName ${FIN_DNS_DN}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: ${SKP_SMB}${SKP_SMB_NN}ADD State: NetBIOSName ${FIN_SMB_NN}" + logDebugMessage "DEBUG: ${SKP_SMB}${SKP_SMB_WG}ADD State: Workgroup ${FIN_SMB_WG}" + logDebugMessage "DEBUG: ${SKP_SMB}${SKP_SMB_WA}ADD State: WINSAddresses ${FIN_SMB_WA}" + + # Save the openvpn process ID and the Network Primary Service ID, leasewather.plist path, logfile path, and optional arguments from Bitmask, + # then save old and new DNS and SMB settings + # PPID is a script variable (defined by bash itself) that contains the process ID of the parent of the process running the script (i.e., OpenVPN's process ID) + # config is an environmental variable set to the configuration path by OpenVPN prior to running this up script + + scutil <<-EOF > /dev/null + open + + # Store our variables for the other scripts (leasewatch, down, etc.) to use + d.init + # The '#' in the next line does NOT start a comment; it indicates to scutil that a number follows it (as opposed to a string or an array) + d.add PID # ${PPID} + d.add Service ${PSID} + d.add LeaseWatcherPlistPath "${LEASEWATCHER_PLIST_PATH}" + d.add RemoveLeaseWatcherPlist "${REMOVE_LEASEWATCHER_PLIST}" + d.add ScriptLogFile "${SCRIPT_LOG_FILE}" + d.add MonitorNetwork "${ARG_MONITOR_NETWORK_CONFIGURATION}" + d.add RestoreOnDNSReset "${ARG_RESTORE_ON_DNS_RESET}" + d.add RestoreOnWINSReset "${ARG_RESTORE_ON_WINS_RESET}" + d.add IgnoreOptionFlags "${ARG_IGNORE_OPTION_FLAGS}" + d.add IsTapInterface "${ARG_TAP}" + d.add FlushDNSCache "${ARG_FLUSH_DNS_CACHE}" + d.add ResetPrimaryInterface "${ARG_RESET_PRIMARY_INTERFACE_ON_DISCONNECT}" + d.add RouteGatewayIsDhcp "${bRouteGatewayIsDhcp}" + d.add bAlsoUsingSetupKeys "${bAlsoUsingSetupKeys}" + d.add TapDeviceHasBeenSetNone "false" + d.add TunnelDevice "$dev" + d.add RestoreIpv6Services "$ipv6_disabled_services_encoded" + set State:/Network/OpenVPN + + # Back up the device's current DNS and SMB configurations, + # Indicate 'no such key' by a dictionary with a single entry: "BitmaskNoSuchKey : true" + # If there isn't a key, "BitmaskNoSuchKey : true" won't be removed. + # If there is a key, "BitmaskNoSuchKey : true" will be removed and the key's contents will be used + + d.init + d.add BitmaskNoSuchKey true + get State:/Network/Service/${PSID}/DNS + set State:/Network/OpenVPN/OldDNS + + d.init + d.add BitmaskNoSuchKey true + get Setup:/Network/Service/${PSID}/DNS + set State:/Network/OpenVPN/OldDNSSetup + + d.init + d.add BitmaskNoSuchKey true + get State:/Network/Service/${PSID}/SMB + set State:/Network/OpenVPN/OldSMB + + # Initialize the new DNS map via State: + ${SKP_DNS}d.init + ${SKP_DNS}${SKP_DNS_SA}d.add ServerAddresses * ${FIN_DNS_SA} + ${SKP_DNS}${SKP_DNS_SD}d.add SearchDomains * ${FIN_DNS_SD} + ${SKP_DNS}${SKP_DNS_DN}d.add DomainName ${FIN_DNS_DN} + ${SKP_DNS}set State:/Network/Service/${PSID}/DNS + + # If necessary, initialize the new DNS map via Setup: also + ${SKP_SETUP_DNS}${SKP_DNS}d.init + ${SKP_SETUP_DNS}${SKP_DNS}${SKP_DNS_SA}d.add ServerAddresses * ${FIN_DNS_SA} + ${SKP_SETUP_DNS}${SKP_DNS}${SKP_DNS_SD}d.add SearchDomains * ${FIN_DNS_SD} + ${SKP_SETUP_DNS}${SKP_DNS}${SKP_DNS_DN}d.add DomainName ${FIN_DNS_DN} + ${SKP_SETUP_DNS}${SKP_DNS}set Setup:/Network/Service/${PSID}/DNS + + # Initialize the SMB map + ${SKP_SMB}d.init + ${SKP_SMB}${SKP_SMB_NN}d.add NetBIOSName ${FIN_SMB_NN} + ${SKP_SMB}${SKP_SMB_WG}d.add Workgroup ${FIN_SMB_WG} + ${SKP_SMB}${SKP_SMB_WA}d.add WINSAddresses * ${FIN_SMB_WA} + ${SKP_SMB}set State:/Network/Service/${PSID}/SMB + + quit +EOF + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: Pause for configuration changes to be propagated to State:/Network/Global/DNS and .../SMB" + sleep 1 + + scutil <<-EOF > /dev/null + open + + # Initialize the maps that will be compared when a configuration change occurs + d.init + d.add BitmaskNoSuchKey true + get State:/Network/Global/DNS + set State:/Network/OpenVPN/DNS + + d.init + d.add BitmaskNoSuchKey true + get State:/Network/Global/SMB + set State:/Network/OpenVPN/SMB + + quit +EOF + + readonly NEW_DNS_SETUP_CONFIG="$( scutil <<-EOF | + open + show Setup:/Network/Service/${PSID}/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly NEW_SMB_SETUP_CONFIG="$( scutil <<-EOF | + open + show Setup:/Network/Service/${PSID}/SMB + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly NEW_DNS_STATE_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Service/${PSID}/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly NEW_SMB_STATE_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Service/${PSID}/SMB + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly NEW_DNS_GLOBAL_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Global/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly NEW_SMB_GLOBAL_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Global/SMB + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly EXPECTED_NEW_DNS_GLOBAL_CONFIG="$( scutil <<-EOF | + open + show State:/Network/OpenVPN/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + readonly EXPECTED_NEW_SMB_GLOBAL_CONFIG="$( scutil <<-EOF | + open + show State:/Network/OpenVPN/SMB + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + + + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: Configurations as read back after changes:" + logDebugMessage "DEBUG: State:/.../DNS = ${NEW_DNS_STATE_CONFIG}" + logDebugMessage "DEBUG: State:/.../SMB = ${NEW_SMB_STATE_CONFIG}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: Setup:/.../DNS = ${NEW_DNS_SETUP_CONFIG}" + logDebugMessage "DEBUG: Setup:/.../SMB = ${NEW_SMB_SETUP_CONFIG}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: State:/Network/Global/DNS = ${NEW_DNS_GLOBAL_CONFIG}" + logDebugMessage "DEBUG: State:/Network/Global/SMB = ${NEW_SMB_GLOBAL_CONFIG}" + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: Expected by process-network-changes:" + logDebugMessage "DEBUG: State:/Network/OpenVPN/DNS = ${EXPECTED_NEW_DNS_GLOBAL_CONFIG}" + logDebugMessage "DEBUG: State:/Network/OpenVPN/SMB = ${EXPECTED_NEW_SMB_GLOBAL_CONFIG}" + + set +e # "grep" will return error status (1) if no matches are found, so don't fail if not found + new_resolver_contents="$( grep -v '#' < /etc/resolv.conf )" + set -e # resume abort on error + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: /etc/resolve = ${new_resolver_contents}" + logDebugMessage "DEBUG:" + + set +e # scutil --dns will return error status in case dns is already down, so don't fail if no dns found + scutil_dns="$( scutil --dns )" + set -e # resume abort on error + logDebugMessage "DEBUG:" + logDebugMessage "DEBUG: scutil --dns AFTER CHANGES = ${scutil_dns}" + logDebugMessage "DEBUG:" + + logMessage "Saved the DNS and SMB configurations so they can be restored" + + logChange "${SKP_DNS}${SKP_DNS_SA}" "DNS ServerAddresses" "${FIN_DNS_SA}" "${CUR_DNS_SA}" + logChange "${SKP_DNS}${SKP_DNS_SD}" "DNS SearchDomains" "${FIN_DNS_SD}" "${CUR_DNS_SD}" + logChange "${SKP_DNS}${SKP_DNS_DN}" "DNS DomainName" "${FIN_DNS_DN}" "${CUR_DNS_DN}" + logChange "${SKP_SMB}${SKP_SMB_NN}" "SMB NetBIOSName" "${FIN_SMB_SA}" "${CUR_SMB_SA}" + logChange "${SKP_SMB}${SKP_SMB_WG}" "SMB Workgroup" "${FIN_SMB_WG}" "${CUR_SMB_WG}" + logChange "${SKP_SMB}${SKP_SMB_WA}" "SMB WINSAddresses" "${FIN_SMB_WA}" "${CUR_SMB_WA}" + + logDnsInfo "${MAN_DNS_SA}" "${FIN_DNS_SA}" + + flushDNSCache + + if ${ARG_MONITOR_NETWORK_CONFIGURATION} ; then + if [ "${ARG_IGNORE_OPTION_FLAGS:0:2}" = "-p" ] ; then + logMessage "Setting up to monitor system configuration with process-network-changes" + else + logMessage "Setting up to monitor system configuration with leasewatch" + fi + if [ "${LEASEWATCHER_TEMPLATE_PATH}" != "" ] ; then + sed -e "s|/Applications/Bitmask/.app/Contents/Resources|${TB_RESOURCES_PATH}|g" "${LEASEWATCHER_TEMPLATE_PATH}" > "${LEASEWATCHER_PLIST_PATH}" + fi + launchctl load "${LEASEWATCHER_PLIST_PATH}" + fi +} + +########################################################################################## +# Used for TAP device which does DHCP +configureDhcpDns() +{ + # whilst ipconfig will have created the neccessary Network Service keys, the DNS + # settings won't actually be used by OS X unless the SupplementalMatchDomains key + # is added + # ref. <http://lists.apple.com/archives/Macnetworkprog/2005/Jun/msg00011.html> + # - is there a way to extract the domains from the SC dictionary and re-insert + # as SupplementalMatchDomains? i.e. not requiring the ipconfig domain_name call? + + # - wait until we get a lease before extracting the DNS domain name and merging into SC + # - despite it's name, ipconfig waitall doesn't (but maybe one day it will :-) + logDebugMessage "DEBUG: About to 'ipconfig waitall'" + ipconfig waitall + logDebugMessage "DEBUG: Completed 'ipconfig waitall'" + + unset test_domain_name + unset test_name_server + + set +e # We instruct bash NOT to exit on individual command errors, because if we need to wait longer these commands will fail + + # usually takes at least a few seconds to get a DHCP lease + sleep 3 + n=0 + while [ -z "$test_domain_name" -a -z "$test_name_server" -a $n -lt 5 ] + do + logMessage "Sleeping for $n seconds to wait for DHCP to finish setup." + sleep $n + n="$( expr $n + 1 )" + + if [ -z "$test_domain_name" ]; then + test_domain_name="$( ipconfig getoption "$dev" domain_name 2>/dev/null )" + fi + + if [ -z "$test_name_server" ]; then + test_name_server="$( ipconfig getoption "$dev" domain_name_server 2>/dev/null )" + fi + done + + logDebugMessage "DEBUG: Finished waiting for DHCP lease: test_domain_name = '$test_domain_name', test_name_server = '$test_name_server'" + + logDebugMessage "DEBUG: About to 'ipconfig getpacket $dev'" + sGetPacketOutput="$( ipconfig getpacket "$dev" )" + logDebugMessage "DEBUG: Completed 'ipconfig getpacket $dev'; sGetPacketOutput = $sGetPacketOutput" + + set -e # We instruct bash that it CAN again fail on individual errors + + unset aNameServers + unset aWinsServers + unset aSearchDomains + + nNameServerIndex=1 + nWinsServerIndex=1 + nSearchDomainIndex=1 + + if [ "$sGetPacketOutput" ]; then + sGetPacketOutput_FirstLine="$( echo "$sGetPacketOutput" | head -n 1 )" + logDebugMessage "DEBUG: sGetPacketOutput_FirstLine = $sGetPacketOutput_FirstLine" + + if [ "$sGetPacketOutput_FirstLine" == "op = BOOTREPLY" ]; then + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + + for tNameServer in $( echo "$sGetPacketOutput" | grep "domain_name_server" | grep -Eo "\{([0-9\.]+)(, [0-9\.]+)*\}" | grep -Eo "([0-9\.]+)" ); do + aNameServers[nNameServerIndex-1]="$( trim "$tNameServer" )" + let nNameServerIndex++ + done + + for tWINSServer in $( echo "$sGetPacketOutput" | grep "nb_over_tcpip_name_server" | grep -Eo "\{([0-9\.]+)(, [0-9\.]+)*\}" | grep -Eo "([0-9\.]+)" ); do + aWinsServers[nWinsServerIndex-1]="$( trim "$tWINSServer" )" + let nWinsServerIndex++ + done + + for tSearchDomain in $( echo "$sGetPacketOutput" | grep "search_domain" | grep -Eo "\{([-A-Za-z0-9\-\.]+)(, [-A-Za-z0-9\-\.]+)*\}" | grep -Eo "([-A-Za-z0-9\-\.]+)" ); do + aSearchDomains[nSearchDomainIndex-1]="$( trim "$tSearchDomain" )" + let nSearchDomainIndex++ + done + + sDomainName="$( echo "$sGetPacketOutput" | grep "domain_name " | grep -Eo ": [-A-Za-z0-9\-\.]+" | grep -Eo "[-A-Za-z0-9\-\.]+" )" + sDomainName="$( trim "$sDomainName" )" + + if [ ${#aNameServers[*]} -gt 0 -a "$sDomainName" ]; then + logMessage "Retrieved from DHCP/BOOTP packet: name server(s) [ ${aNameServers[@]} ], domain name [ $sDomainName ], search domain(s) [ ${aSearchDomains[@]} ] and SMB server(s) [ ${aWinsServers[@]} ]" + setDnsServersAndDomainName aNameServers[@] "$sDomainName" aWinsServers[@] aSearchDomains[@] + return 0 + elif [ ${#aNameServers[*]} -gt 0 ]; then + logMessage "Retrieved from DHCP/BOOTP packet: name server(s) [ ${aNameServers[@]} ], search domain(s) [ ${aSearchDomains[@]} ] and SMB server(s) [ ${aWinsServers[@]} ] and using default domain name [ $DEFAULT_DOMAIN_NAME ]" + setDnsServersAndDomainName aNameServers[@] "$DEFAULT_DOMAIN_NAME" aWinsServers[@] aSearchDomains[@] + return 0 + else + # Should we return 1 here and indicate an error, or attempt the old method? + logMessage "No useful information extracted from DHCP/BOOTP packet. Attempting legacy configuration." + fi + + set -e # We instruct bash that it CAN again fail on errors + else + # Should we return 1 here and indicate an error, or attempt the old method? + logMessage "No DHCP/BOOTP packet found on interface. Attempting legacy configuration." + fi + fi + + unset sDomainName + unset sNameServer + unset aNameServers + + set +e # We instruct bash NOT to exit on individual command errors, because if we need to wait longer these commands will fail + + logDebugMessage "DEBUG: About to 'ipconfig getoption $dev domain_name'" + sDomainName="$( ipconfig getoption "$dev" domain_name 2>/dev/null )" + logDebugMessage "DEBUG: Completed 'ipconfig getoption $dev domain_name'" + logDebugMessage "DEBUG: About to 'ipconfig getoption $dev domain_name_server'" + sNameServer="$( ipconfig getoption "$dev" domain_name_server 2>/dev/null )" + logDebugMessage "DEBUG: Completed 'ipconfig getoption $dev domain_name_server'" + + set -e # We instruct bash that it CAN again fail on individual errors + + sDomainName="$( trim "$sDomainName" )" + sNameServer="$( trim "$sNameServer" )" + + declare -a aWinsServers=( ) # Declare empty WINSServers array to avoid any useless error messages + declare -a aSearchDomains=( ) # Declare empty SearchDomains array to avoid any useless error messages + + if [ "$sDomainName" -a "$sNameServer" ]; then + aNameServers[0]=$sNameServer + logMessage "Retrieved OpenVPN (DHCP): name server [ $sNameServer ], domain name [ $sDomainName ], and no SMB servers or search domains" + setDnsServersAndDomainName aNameServers[@] "$sDomainName" aWinsServers[@] aSearchDomains[@] + elif [ "$sNameServer" ]; then + aNameServers[0]=$sNameServer + logMessage "Retrieved OpenVPN (DHCP): name server [ $sNameServer ] and no SMB servers or search domains, and using default domain name [ $DEFAULT_DOMAIN_NAME ]" + setDnsServersAndDomainName aNameServers[@] "$DEFAULT_DOMAIN_NAME" aWinsServers[@] aSearchDomains[@] + elif [ "$sDomainName" ]; then + logMessage "WARNING: Retrieved domain name [ $sDomainName ] but no name servers from OpenVPN via DHCP, which is not sufficient to make network/DNS configuration changes." + if ${ARG_MONITOR_NETWORK_CONFIGURATION} ; then + logMessage "WARNING: Will NOT monitor for other network configuration changes." + fi + logDnsInfoNoChanges + flushDNSCache + else + logMessage "WARNING: No DNS information received from OpenVPN via DHCP, so no network/DNS configuration changes need to be made." + if ${ARG_MONITOR_NETWORK_CONFIGURATION} ; then + logMessage "WARNING: Will NOT monitor for other network configuration changes." + fi + logDnsInfoNoChanges + flushDNSCache + fi + + return 0 +} + +########################################################################################## +# Configures using OpenVPN foreign_option_* instead of DHCP + +configureOpenVpnDns() +{ +# Description of foreign_option_ parameters (from OpenVPN 2.3-alpha_2 man page): +# +# DOMAIN name -- Set Connection-specific DNS Suffix. +# +# DOMAIN-SEARCH name -- Set Connection-specific DNS Search Address. Repeat this option to +# set additional search domains. (Bitmask-specific addition.) +# +# DNS addr -- Set primary domain name server address. Repeat this option to set +# secondary DNS server addresses. +# +# WINS addr -- Set primary WINS server address (NetBIOS over TCP/IP Name Server). +# Repeat this option to set secondary WINS server addresses. +# +# NBDD addr -- Set primary NBDD server address (NetBIOS over TCP/IP Datagram Distribution Server) +# Repeat this option to set secondary NBDD server addresses. +# +# NTP addr -- Set primary NTP server address (Network Time Protocol). Repeat this option +# to set secondary NTP server addresses. +# +# NBT type -- Set NetBIOS over TCP/IP Node type. Possible options: 1 = b-node +# (broadcasts), 2 = p-node (point-to-point name queries to a WINS server), 4 = m- +# node (broadcast then query name server), and 8 = h-node (query name server, then +# broadcast). +# +# NBS scope-id -- Set NetBIOS over TCP/IP Scope. A NetBIOS Scope ID provides an +# extended naming service for the NetBIOS over TCP/IP (Known as NBT) module. The +# primary purpose of a NetBIOS scope ID is to isolate NetBIOS traffic on a single +# network to only those nodes with the same NetBIOS scope ID. The NetBIOS scope ID +# is a character string that is appended to the NetBIOS name. The NetBIOS scope ID +# on two hosts must match, or the two hosts will not be able to communicate. The +# NetBIOS Scope ID also allows computers to use the same computer name, as they have +# different scope IDs. The Scope ID becomes a part of the NetBIOS name, making the +# name unique. (This description of NetBIOS scopes courtesy of NeonSurge@abyss.com) +# +#DISABLE-NBT -- Disable Netbios-over-TCP/IP. + + unset vForOptions + unset vOptions + unset aNameServers + unset aWinsServers + unset aSearchDomains + + nOptionIndex=1 + nNameServerIndex=1 + nWinsServerIndex=1 + nSearchDomainIndex=1 + + while vForOptions=foreign_option_$nOptionIndex; [ -n "${!vForOptions}" ]; do + vOptions[nOptionIndex-1]=${!vForOptions} + case ${vOptions[nOptionIndex-1]} in + *DOMAIN-SEARCH* ) + aSearchDomains[nSearchDomainIndex-1]="$( trim "${vOptions[nOptionIndex-1]//dhcp-option DOMAIN-SEARCH /}" )" + let nSearchDomainIndex++ + ;; + *DOMAIN* ) + sDomainName="$( trim "${vOptions[nOptionIndex-1]//dhcp-option DOMAIN /}" )" + ;; + *DNS* ) + aNameServers[nNameServerIndex-1]="$( trim "${vOptions[nOptionIndex-1]//dhcp-option DNS /}" )" + let nNameServerIndex++ + ;; + *WINS* ) + aWinsServers[nWinsServerIndex-1]="$( trim "${vOptions[nOptionIndex-1]//dhcp-option WINS /}" )" + let nWinsServerIndex++ + ;; + * ) + logMessage "WARNING: 'foreign_option_${nOptionIndex}' = '${vOptions[nOptionIndex-1]}' ignored" + ;; + esac + let nOptionIndex++ + done + + if [ ${#aNameServers[*]} -gt 0 -a "$sDomainName" ]; then + logMessage "Retrieved from OpenVPN: name server(s) [ ${aNameServers[@]} ], domain name [ $sDomainName ], search domain(s) [ ${aSearchDomains[@]} ], and SMB server(s) [ ${aWinsServers[@]} ]" + setDnsServersAndDomainName aNameServers[@] "$sDomainName" aWinsServers[@] aSearchDomains[@] + elif [ ${#aNameServers[*]} -gt 0 ]; then + logMessage "Retrieved from OpenVPN: name server(s) [ ${aNameServers[@]} ], search domain(s) [ ${aSearchDomains[@]} ] and SMB server(s) [ ${aWinsServers[@]} ] and using default domain name [ $DEFAULT_DOMAIN_NAME ]" + setDnsServersAndDomainName aNameServers[@] "$DEFAULT_DOMAIN_NAME" aWinsServers[@] aSearchDomains[@] + else + logMessage "WARNING: No DNS information received from OpenVPN, so no network configuration changes need to be made." + if ${ARG_MONITOR_NETWORK_CONFIGURATION} ; then + logMessage "WARNING: Will NOT monitor for other network configuration changes." + fi + logDnsInfoNoChanges + flushDNSCache + fi + + return 0 +} + +########################################################################################## +flushDNSCache() +{ + if ${ARG_FLUSH_DNS_CACHE} ; then + if [ "${OSVER}" = "10.4" ] ; then + + if [ -f /usr/sbin/lookupd ] ; then + set +e # we will catch errors from lookupd + /usr/sbin/lookupd -flushcache + if [ $? != 0 ] ; then + logMessage "WARNING: Unable to flush the DNS cache via lookupd" + else + logMessage "Flushed the DNS cache via lookupd" + fi + set -e # bash should again fail on errors + else + logMessage "WARNING: /usr/sbin/lookupd not present. Not flushing the DNS cache" + fi + + else + + if [ -f /usr/bin/dscacheutil ] ; then + set +e # we will catch errors from dscacheutil + /usr/bin/dscacheutil -flushcache + if [ $? != 0 ] ; then + logMessage "WARNING: Unable to flush the DNS cache via dscacheutil" + else + logMessage "Flushed the DNS cache via dscacheutil" + fi + set -e # bash should again fail on errors + else + logMessage "WARNING: /usr/bin/dscacheutil not present. Not flushing the DNS cache via dscacheutil" + fi + + if [ -f /usr/sbin/discoveryutil ] ; then + set +e # we will catch errors from discoveryutil + /usr/sbin/discoveryutil udnsflushcaches + if [ $? != 0 ] ; then + logMessage "WARNING: Unable to flush the DNS cache via discoveryutil udnsflushcaches" + else + logMessage "Flushed the DNS cache via discoveryutil udnsflushcaches" + fi + /usr/sbin/discoveryutil mdnsflushcache + if [ $? != 0 ] ; then + logMessage "WARNING: Unable to flush the DNS cache via discoveryutil mdnsflushcache" + else + logMessage "Flushed the DNS cache via discoveryutil mdnsflushcache" + fi + set -e # bash should again fail on errors + else + logMessage "/usr/sbin/discoveryutil not present. Not flushing the DNS cache via discoveryutil" + fi + + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + hands_off_ps="$( ps -ax | grep HandsOffDaemon | grep -v grep.HandsOffDaemon )" + set -e # We instruct bash that it CAN again fail on errors + if [ "${hands_off_ps}" = "" ] ; then + if [ -f /usr/bin/killall ] ; then + set +e # ignore errors if mDNSResponder isn't currently running + /usr/bin/killall -HUP mDNSResponder + if [ $? != 0 ] ; then + logMessage "mDNSResponder not running. Not notifying it that the DNS cache was flushed" + else + logMessage "Notified mDNSResponder that the DNS cache was flushed" + fi + set -e # bash should again fail on errors + else + logMessage "WARNING: /usr/bin/killall not present. Not notifying mDNSResponder that the DNS cache was flushed" + fi + else + logMessage "WARNING: Hands Off is running. Not notifying mDNSResponder that the DNS cache was flushed" + fi + + fi + fi +} + + +########################################################################################## +# log information about the DNS settings +# @param String Manual DNS_SA +# @param String New DNS_SA +logDnsInfo() { + + log_dns_info_manual_dns_sa="$1" + log_dns_info_new_dns_sa="$2" + + if [ "${log_dns_info_manual_dns_sa}" != "" ] ; then + logMessage "DNS servers '${log_dns_info_manual_dns_sa}' were set manually" + if [ "${log_dns_info_manual_dns_sa}" != "${log_dns_info_new_dns_sa}" ] ; then + logMessage "WARNING: that setting is being ignored by OS X; '${log_dns_info_new_dns_sa}' is being used." + fi + fi + + if [ "${log_dns_info_new_dns_sa}" != "" ] ; then + logMessage "DNS servers '${log_dns_info_new_dns_sa}' will be used for DNS queries when the VPN is active" + if [ "${log_dns_info_new_dns_sa}" == "127.0.0.1" ] ; then + logMessage "NOTE: DNS server 127.0.0.1 often is used inside virtual machines (e.g., 'VirtualBox', 'Parallels', or 'VMWare'). The actual VPN server may be specified by the host machine. This DNS server setting may cause DNS queries to fail or be intercepted or falsified. Specify only known public DNS servers or DNS servers located on the VPN network to avoid such problems." + else + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + serversContainLoopback="$( echo "${log_dns_info_new_dns_sa}" | grep "127.0.0.1" )" + set -e # We instruct bash that it CAN again fail on errors + if [ "${serversContainLoopback}" != "" ] ; then + logMessage "NOTE: DNS server 127.0.0.1 often is used inside virtual machines (e.g., 'VirtualBox', 'Parallels', or 'VMWare'). The actual VPN server may be specified by the host machine. If used, 127.0.0.1 may cause DNS queries to fail or be intercepted or falsified. Specify only known public DNS servers or DNS servers located on the VPN network to avoid such problems." + else + readonly knownPublicDnsServers="$( cat "${FREE_PUBLIC_DNS_SERVERS_LIST_PATH}" )" + knownDnsServerNotFound="true" + unknownDnsServerFound="false" + for server in ${log_dns_info_new_dns_sa} ; do + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + serverIsKnown="$( echo "${knownPublicDnsServers}" | grep "${server}" )" + set -e # We instruct bash that it CAN again fail on errors + if [ "${serverIsKnown}" != "" ] ; then + knownDnsServerNotFound="false" + else + unknownDnsServerFound="true" + fi + done + if ${knownDnsServerNotFound} ; then + logMessage "NOTE: The DNS servers do not include any free public DNS servers known to Bitmask. This may cause DNS queries to fail or be intercepted or falsified even if they are directed through the VPN. Specify only known public DNS servers or DNS servers located on the VPN network to avoid such problems." + else + if ${unknownDnsServerFound} ; then + logMessage "NOTE: The DNS servers include one or more free public DNS servers known to Bitmask and one or more DNS servers not known to Bitmask. If used, the DNS servers not known to Bitmask may cause DNS queries to fail or be intercepted or falsified even if they are directed through the VPN. Specify only known public DNS servers or DNS servers located on the VPN network to avoid such problems." + else + logMessage "The DNS servers include only free public DNS servers known to Bitmask." + fi + fi + fi + fi + else + logMessage "WARNING: There are no DNS servers in this computer's new network configuration. This computer or a DHCP server that this computer uses may be configured incorrectly." + fi +} + +logDnsInfoNoChanges() { +# log information about DNS settings if they are not changing + + set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors + + PSID="$( scutil <<-EOF | + open + show State:/Network/Global/IPv4 + quit +EOF +grep PrimaryService | sed -e 's/.*PrimaryService : //' +)" + + readonly LOGDNSINFO_MAN_DNS_CONFIG="$( scutil <<-EOF | + open + show Setup:/Network/Service/${PSID}/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + + readonly LOGDNSINFO_CUR_DNS_CONFIG="$( scutil <<-EOF | + open + show State:/Network/Global/DNS + quit +EOF +sed -e 's/^[[:space:]]*[[:digit:]]* : //g' | tr '\n' ' ' +)" + + if echo "${LOGDNSINFO_MAN_DNS_CONFIG}" | grep -q "ServerAddresses" ; then + readonly LOGDNSINFO_MAN_DNS_SA="$( trim "$( echo "${LOGDNSINFO_MAN_DNS_CONFIG}" | sed -e 's/^.*ServerAddresses[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )" )" + else + readonly LOGDNSINFO_MAN_DNS_SA=""; + fi + + if echo "${LOGDNSINFO_CUR_DNS_CONFIG}" | grep -q "ServerAddresses" ; then + readonly LOGDNSINFO_CUR_DNS_SA="$( trim "$( echo "${LOGDNSINFO_CUR_DNS_CONFIG}" | sed -e 's/^.*ServerAddresses[^{]*{[[:space:]]*\([^}]*\)[[:space:]]*}.*$/\1/g' )" )" + else + readonly LOGDNSINFO_CUR_DNS_SA=""; + fi + + set -e # resume abort on error + + logDnsInfo "${LOGDNSINFO_MAN_DNS_SA}" "${LOGDNSINFO_CUR_DNS_SA}" +} + +########################################################################################## +# +# START OF SCRIPT +# +########################################################################################## + +trap "" TSTP +trap "" HUP +trap "" INT +export PATH="/bin:/sbin:/usr/sbin:/usr/bin" + +readonly OUR_NAME="$( basename "${0}" )" + +logMessage "**********************************************" +logMessage "Start of output from ${OUR_NAME}" + +# Process optional arguments (if any) for the script +# Each one begins with a "-" +# They come from Bitmask, and come first, before the OpenVPN arguments +# So we set ARG_ script variables to their values and shift them out of the argument list +# When we're done, only the OpenVPN arguments remain for the rest of the script to use +ARG_TAP="false" +ARG_WAIT_FOR_DHCP_IF_TAP="false" +ARG_RESTORE_ON_DNS_RESET="false" +ARG_FLUSH_DNS_CACHE="false" +ARG_IGNORE_OPTION_FLAGS="" +ARG_EXTRA_LOGGING="false" +ARG_MONITOR_NETWORK_CONFIGURATION="false" +ARG_DO_NO_USE_DEFAULT_DOMAIN="false" +ARG_PREPEND_DOMAIN_NAME="false" +ARG_RESET_PRIMARY_INTERFACE_ON_DISCONNECT="false" +ARG_TB_PATH="/Applications/Bitmask.app" +ARG_RESTORE_ON_WINS_RESET="false" +ARG_DISABLE_IPV6_ON_TUN="false" +ARG_ENABLE_IPV6_ON_TAP="false" + +# Handle the arguments we know about by setting ARG_ script variables to their values, then shift them out +while [ {$#} ] ; do + if [ "$1" = "-6" ] ; then # -6 = ARG_ENABLE_IPV6_ON_TAP (for TAP connections only) + ARG_ENABLE_IPV6_ON_TAP="true" + shift + elif [ "$1" = "-9" ] ; then # -9 = ARG_DISABLE_IPV6_ON_TUN (for TUN connections only) + ARG_DISABLE_IPV6_ON_TUN="true" + shift + elif [ "$1" = "-a" ] ; then # -a = ARG_TAP + ARG_TAP="true" + shift + elif [ "$1" = "-b" ] ; then # -b = ARG_WAIT_FOR_DHCP_IF_TAP + ARG_WAIT_FOR_DHCP_IF_TAP="true" + shift + elif [ "$1" = "-d" ] ; then # -d = ARG_RESTORE_ON_DNS_RESET + ARG_RESTORE_ON_DNS_RESET="true" + shift + elif [ "$1" = "-f" ] ; then # -f = ARG_FLUSH_DNS_CACHE + ARG_FLUSH_DNS_CACHE="true" + shift + elif [ "${1:0:2}" = "-i" ] ; then # -i arguments are for leasewatcher + ARG_IGNORE_OPTION_FLAGS="${1}" + shift + elif [ "$1" = "-l" ] ; then # -l = ARG_EXTRA_LOGGING + ARG_EXTRA_LOGGING="true" + shift + elif [ "$1" = "-m" ] ; then # -m = ARG_MONITOR_NETWORK_CONFIGURATION + ARG_MONITOR_NETWORK_CONFIGURATION="true" + shift + elif [ "$1" = "-n" ] ; then # -n = ARG_DO_NO_USE_DEFAULT_DOMAIN + ARG_DO_NO_USE_DEFAULT_DOMAIN="true" + shift + elif [ "$1" = "-p" ] ; then # -p = ARG_PREPEND_DOMAIN_NAME + ARG_PREPEND_DOMAIN_NAME="true" + shift + elif [ "${1:0:2}" = "-p" ] ; then # -p arguments are for process-network-changes + ARG_IGNORE_OPTION_FLAGS="${1}" + shift + elif [ "$1" = "-r" ] ; then # -r = ARG_RESET_PRIMARY_INTERFACE_ON_DISCONNECT + ARG_RESET_PRIMARY_INTERFACE_ON_DISCONNECT="true" + shift + elif [ "${1:0:2}" = "-t" ] ; then + ARG_TB_PATH="${1:2}" # -t path of Bitmask.app + shift + elif [ "$1" = "-w" ] ; then # -w = ARG_RESTORE_ON_WINS_RESET + ARG_RESTORE_ON_WINS_RESET="true" + shift + else + if [ "${1:0:1}" = "-" ] ; then # Shift out Bitmask arguments (they start with "-") that we don't understand + shift # so the rest of the script sees only the OpenVPN arguments + else + break + fi + fi +done + +readonly ARG_MONITOR_NETWORK_CONFIGURATION ARG_RESTORE_ON_DNS_RESET ARG_RESTORE_ON_WINS_RESET ARG_TAP ARG_PREPEND_DOMAIN_NAME ARG_FLUSH_DNS_CACHE ARG_RESET_PRIMARY_INTERFACE_ON_DISCONNECT ARG_IGNORE_OPTION_FLAGS + +# Note: The script log path name is constructed from the path of the regular config file, not the shadow copy +# if the config is shadow copy, e.g. /Library/Application Support/Bitmask/Users/Jonathan/Folder/Subfolder/config.ovpn +# then convert to regular config /Users/Jonathan/Library/Application Support/Bitmask/Configurations/Folder/Subfolder/config.ovpn +# to get the script log path +# Note: "/Users/..." works even if the home directory has a different path; it is used in the name of the log file, and is not used as a path to get to anything. +readonly TBALTPREFIX="/Library/Application Support/Bitmask/Users/" +readonly TBALTPREFIXLEN="${#TBALTPREFIX}" +readonly TBCONFIGSTART="${config:0:$TBALTPREFIXLEN}" +if [ "$TBCONFIGSTART" = "$TBALTPREFIX" ] ; then + readonly TBBASE="${config:$TBALTPREFIXLEN}" + readonly TBSUFFIX="${TBBASE#*/}" + readonly TBUSERNAME="${TBBASE%%/*}" + readonly TBCONFIG="/Users/$TBUSERNAME/Library/Application Support/Bitmask/Configurations/$TBSUFFIX" +else + readonly TBCONFIG="${config}" +fi + +readonly CONFIG_PATH_DASHES_SLASHES="$( echo "${TBCONFIG}" | sed -e 's/-/--/g' | sed -e 's/\//-S/g' )" +readonly SCRIPT_LOG_FILE="/Library/Application Support/Bitmask/Logs/${CONFIG_PATH_DASHES_SLASHES}.script.log" + +readonly TB_RESOURCES_PATH="${ARG_TB_PATH}/Contents/Resources" +readonly FREE_PUBLIC_DNS_SERVERS_LIST_PATH="${TB_RESOURCES_PATH}/FreePublicDnsServersList.txt" + +# These scripts use a launchd .plist to set up to monitor the network configuration. +# +# If Bitmask.app is located in /Applications, we load the launchd .plist directly from within the .app. +# +# If Bitmask.app is not located in /Applications (i.e., we are debugging), we create a modified version of the launchd .plist and use +# that modified copy in the 'launchctl load' command. (The modification is that the path to process-network-changes or leasewatch program +# in the .plist is changed to point to the copy of the program that is inside the running Bitmask.) +# +# The variables involved in this are set up here: +# +# LEASEWATCHER_PLIST_PATH is the path of the .plist to use in the 'launchctl load' command +# LEASEWATCHER_TEMPLATE_PATH is an empty string if we load the .plist directly from within the .app, +# or it is the path to the original .plist inside the .app which we copy and modify +# REMOVE_LEASEWATCHER_PLIST is "true" if a modified .plist was used and should be deleted after it is unloaded +# or "false' if the plist was loaded directly from the .app +# +# LEASEWATCHER_PLIST_PATH and REMOVE_LEASEWATCHER_PLIST are passed to the other scripts via the scutil State:/Network/OpenVPN mechanism + +if [ "${ARG_IGNORE_OPTION_FLAGS:0:2}" = "-p" ] ; then + readonly LEASEWATCHER_PLIST="ProcessNetworkChanges.plist" +else + readonly LEASEWATCHER_PLIST="LeaseWatch.plist" +fi +if [ "${ARG_TB_PATH}" = "/Applications/Bitmask.app" ] ; then + readonly LEASEWATCHER_PLIST_PATH="${TB_RESOURCES_PATH}/${LEASEWATCHER_PLIST}" + readonly LEASEWATCHER_TEMPLATE_PATH="" + readonly REMOVE_LEASEWATCHER_PLIST="false" +else + readonly LEASEWATCHER_PLIST_PATH="/Library/Application Support/Bitmask/${LEASEWATCHER_PLIST}" + readonly LEASEWATCHER_TEMPLATE_PATH="${TB_RESOURCES_PATH}/${LEASEWATCHER_PLIST}" + readonly REMOVE_LEASEWATCHER_PLIST="true" +fi + +set +e # "grep" will return error status (1) if no matches are found, so don't fail on individual errors +readonly OSVER="$( sw_vers | grep 'ProductVersion:' | grep -o '10\.[0-9]*' )" +set -e # We instruct bash that it CAN again fail on errors + +if ${ARG_DO_NO_USE_DEFAULT_DOMAIN} ; then + readonly DEFAULT_DOMAIN_NAME="" +else + readonly DEFAULT_DOMAIN_NAME="openvpn" +fi + +bRouteGatewayIsDhcp="false" + +# We sleep to allow time for OS X to process network settings +sleep 2 + +EXIT_CODE=0 + +if ${ARG_TAP} ; then + + # IPv6 should be re-enabled only for TUN, not TAP + readonly ipv6_disabled_services="" + readonly ipv6_disabled_services_encoded="" + + # Still need to do: Look for route-gateway dhcp (TAP isn't always DHCP) + bRouteGatewayIsDhcp="false" + if [ -z "${route_vpn_gateway}" -o "$route_vpn_gateway" == "dhcp" -o "$route_vpn_gateway" == "DHCP" ]; then + bRouteGatewayIsDhcp="true" + fi + + if [ "$bRouteGatewayIsDhcp" == "true" ]; then + logDebugMessage "DEBUG: bRouteGatewayIsDhcp is TRUE" + if [ -z "$dev" ]; then + logMessage "ERROR: Cannot configure TAP interface for DHCP without \$dev being defined. Exiting." + # We don't create the "/tmp/bitmask-downscript-needs-to-be-run.txt" file, because the down script does NOT need to be run since we didn't do anything + logMessage "End of output from ${OUR_NAME}" + logMessage "**********************************************" + exit 1 + fi + + logDebugMessage "DEBUG: About to 'ipconfig set \"$dev\" DHCP" + ipconfig set "$dev" DHCP + logMessage "Did 'ipconfig set \"$dev\" DHCP'" + + if ${ARG_ENABLE_IPV6_ON_TAP} ; then + ipconfig set "$dev" AUTOMATIC-V6 + logMessage "Did 'ipconfig set \"$dev\" AUTOMATIC-V6'" + fi + + if ${ARG_WAIT_FOR_DHCP_IF_TAP} ; then + logMessage "Configuring tap DNS via DHCP synchronously" + configureDhcpDns + else + logMessage "Configuring tap DNS via DHCP asynchronously" + configureDhcpDns & # This must be run asynchronously; the DHCP lease will not complete until this script exits + EXIT_CODE=0 + fi + elif [ "$foreign_option_1" == "" ]; then + logMessage "NOTE: No network configuration changes need to be made." + if ${ARG_MONITOR_NETWORK_CONFIGURATION} ; then + logMessage "WARNING: Will NOT monitor for other network configuration changes." + fi + if ${ARG_ENABLE_IPV6_ON_TAP} ; then + logMessage "WARNING: Will NOT set up IPv6 on TAP device because it does not use DHCP." + fi + logDnsInfoNoChanges + flushDNSCache + else + if ${ARG_ENABLE_IPV6_ON_TAP} ; then + logMessage "WARNING: Will NOT set up IPv6 on TAP device because it does not use DHCP." + fi + logMessage "Configuring tap DNS via OpenVPN" + configureOpenVpnDns + EXIT_CODE=$? + fi +else + if [ "$foreign_option_1" == "" ]; then + logMessage "NOTE: No network configuration changes need to be made." + if ${ARG_MONITOR_NETWORK_CONFIGURATION} ; then + logMessage "WARNING: Will NOT monitor for other network configuration changes." + fi + if ${ARG_DISABLE_IPV6_ON_TUN} ; then + logMessage "WARNING: Will NOT disable IPv6 settings." + fi + logDnsInfoNoChanges + flushDNSCache + else + + ipv6_disabled_services="" + if ${ARG_DISABLE_IPV6_ON_TUN} ; then + ipv6_disabled_services="$( disable_ipv6 )" + if [ "$ipv6_disabled_services" != "" ] ; then + printf %s "$ipv6_disabled_services +" | \ + while IFS= read -r dipv6_service ; do + logMessage "Disabled IPv6 for '$dipv6_service'" + done + fi + fi + readonly ipv6_disabled_services + # Note '\n' is translated into '\t' so it is all on one line, because grep and sed only work with single lines + readonly ipv6_disabled_services_encoded="$( echo "$ipv6_disabled_services" | tr '\n' '\t' )" + + configureOpenVpnDns + EXIT_CODE=$? + fi +fi + +touch "/tmp/bitmask-downscript-needs-to-be-run.txt" + +logMessage "End of output from ${OUR_NAME}" +logMessage "**********************************************" + +exit $EXIT_CODE |