whonix: Added protected-files file used to prevent scripts from modifying files that need to be protected
A file is created in /var/lib/qubes/protected-files. Scripts can grep this file before modifying
known files to be protected and skip any modifications if the file path is within protected-files.
Usage Example:
if ! grep -q "^/etc/hostname$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
Also cleaned up maintainer scripts removing unneeded systemd status functions and streamlined
the enable/disable systemd unit files functions
This commit is contained in:
Jason Mehring
Marek Marczykowski-Górecki
parent
0c0cb5f6b2
commit
56b0685aaa
126
debian/qubes-core-agent.postinst
vendored
126
debian/qubes-core-agent.postinst
vendored
@ -105,80 +105,47 @@ showIn() {
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fi
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}
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setArrayAsGlobal() {
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local array="$1"
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local export_as="$2"
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local code=$(declare -p "$array")
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local replaced="${code/$array/$export_as}"
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eval ${replaced/declare -/declare -g}
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}
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systemdInfo() {
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changeSystemdStatus() {
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unit=${1}
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return_global_var=${2}
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disable=${2-0}
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# Check if unit file is currently active (running)
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systemctl is-active ${unit} > /dev/null 2>&1 && active=true || unset active
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declare -A INFO=()
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while read line; do
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INFO[${line%%=*}]="${line##*=}"
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done < <(systemctl show ${unit} 2> /dev/null)
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case ${disable} in
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0)
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systemctl --quiet enable ${unit} > /dev/null 2>&1 || true
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;;
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1)
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if [ $active ]; then
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systemctl --quiet stop ${unit} > /dev/null 2>&1 || true
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fi
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setArrayAsGlobal INFO $return_global_var
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return ${#INFO[@]}
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}
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displayFailedStatus() {
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action=${1}
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unit=${2}
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# Only display if there are results. In chroot environmnet there will be
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# no results to 'systemctl show' command
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systemdInfo ${unit} info || {
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echo
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echo "==================================================="
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echo "FAILED: systemd ${action} ${unit}"
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echo "==================================================="
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echo " LoadState = ${info[LoadState]}"
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echo " LoadError = ${info[LoadError]}"
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echo " ActiveState = ${info[ActiveState]}"
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echo " SubState = ${info[SubState]}"
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echo "UnitFileState = ${info[UnitFileState]}"
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echo
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}
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}
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# Disable systemd units
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disableSystemdUnits() {
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for unit in $*; do
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echo "Disabling ${unit}..."
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systemctl is-active ${unit} > /dev/null 2>&1 && {
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systemctl stop ${unit} > /dev/null 2>&1 || displayFailedStatus stop ${unit}
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}
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if [ -f /lib/systemd/system/${unit} ]; then
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if fgrep -q '[Install]' /lib/systemd/system/${unit}; then
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systemctl disable ${unit} > /dev/null 2>&1 || displayFailedStatus disable ${unit}
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if [ -f /lib/systemd/system/${unit} ]; then
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if fgrep -q '[Install]' /lib/systemd/system/${unit}; then
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systemctl --quiet disable ${unit} > /dev/null 2>&1 || true
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else
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# Forcibly disable
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ln -sf /dev/null /etc/systemd/system/${unit}
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fi
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else
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echo "Masking service: ${unit}"
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systemctl mask ${unit}
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systemctl --quiet disable ${unit} > /dev/null 2>&1 || true
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fi
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else
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systemctl disable ${unit} > /dev/null 2>&1 || displayFailedStatus disable ${unit}
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fi
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done
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;;
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esac
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}
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# Enable systemd units
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enableSystemdUnits() {
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for unit in $*; do
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systemctl is-enabled ${unit} > /dev/null 2>&1 && {
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echo "It appears ${unit} is already enabled!"
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#displayFailedStatus is-enabled ${unit}
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} || {
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echo "Enabling: ${unit}..."
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systemctl enable ${unit} > /dev/null 2>&1 || {
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echo "Could not enable: ${unit}"
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displayFailedStatus enable ${unit}
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}
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}
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changeSystemdStatus ${unit} 0 || true
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done
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}
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# Disable systemd units
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disableSystemdUnits() {
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for unit in $*; do
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changeSystemdStatus ${unit} 1 || true
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done
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}
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@ -204,6 +171,9 @@ case "${1}" in
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dpkg-divert --divert /etc/init/${init}.conf.qubes-disabled --package qubes-core-agent --rename --add /etc/init/${init}.conf
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done
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# Disable sysv init network-manager
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disableSystemdUnits network-manager
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# Create NetworkManager configuration if we do not have it
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if ! [ -e /etc/NetworkManager/NetworkManager.conf ]; then
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echo '[main]' > /etc/NetworkManager/NetworkManager.conf
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@ -217,19 +187,27 @@ case "${1}" in
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rm -f /lib/firmware/updates
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fi
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# Location of files which contains list of protected files
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PROTECTED_FILE_LIST='/var/lib/qubes/protected-files'
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# ensure that hostname resolves to 127.0.1.1 resp. ::1 and that /etc/hosts is
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# in the form expected by qubes-sysinit.sh
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for ip in '127\.0\.1\.1' '::1'; do
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if grep -q "^${ip}\(\s\|$\)" /etc/hosts; then
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sed -i "/^${ip}\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts
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sed -i "s/^${ip}\(\s\|$\).*$/\0 `hostname`/" /etc/hosts
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else
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echo "${ip//\\/} `hostname`" >> /etc/hosts
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fi
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done
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if ! grep -q "^/etc/hostname$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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for ip in '127\.0\.1\.1' '::1'; do
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if grep -q "^${ip}\(\s\|$\)" /etc/hosts; then
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sed -i "/^${ip}\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts || true
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sed -i "s/^${ip}\(\s\|$\).*$/\0 `hostname`/" /etc/hosts || true
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else
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echo "${ip//\\/} `hostname`" >> /etc/hosts || true
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fi
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done
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fi
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# remove hostname from 127.0.0.1 line (in debian the hostname is by default
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# resolved to 127.0.1.1)
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sed -i "/^127\.0\.0\.1\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts
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if ! grep -q "^/etc/hosts$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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sed -i "/^127\.0\.0\.1\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts || true
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fi
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chown user:user /home_volatile/user
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@ -286,7 +264,7 @@ case "${1}" in
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rngd smartd.service \
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upower.service \
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irqbalance.service \
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colord.service
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colord.service
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rm -f /etc/systemd/system/getty.target.wants/getty@tty*.service
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@ -6,6 +6,9 @@
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disablegw=`qubesdb-read /qubes-service/disable-default-route 2> /dev/null`
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disabledns=`qubesdb-read /qubes-service/disable-dns-server 2> /dev/null`
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# Location of files which contains list of protected files
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PROTECTED_FILE_LIST='/var/lib/qubes/protected-files'
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ip=`/usr/bin/qubesdb-read /qubes-ip 2> /dev/null`
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if [ x$ip != x ]; then
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netmask=`/usr/bin/qubesdb-read /qubes-netmask`
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@ -19,10 +22,12 @@ if [ x$ip != x ]; then
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fi
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/sbin/ethtool -K $INTERFACE sg off
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/sbin/ethtool -K $INTERFACE tx off
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echo > /etc/resolv.conf
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if [ "x$disabledns" != "x1" ]; then
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echo "nameserver $gateway" > /etc/resolv.conf
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echo "nameserver $secondary_dns" >> /etc/resolv.conf
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if ! grep -q "^/etc/resolv[.]conf$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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echo > /etc/resolv.conf
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if [ "x$disabledns" != "x1" ]; then
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echo "nameserver $gateway" > /etc/resolv.conf
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echo "nameserver $secondary_dns" >> /etc/resolv.conf
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fi
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fi
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if [ -f /var/run/qubes-service/network-manager ]; then
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nm_config=/etc/NetworkManager/system-connections/qubes-uplink-$INTERFACE
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@ -239,24 +239,31 @@ fi
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# Revert 'Prevent unnecessary updates in VMs':
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sed -i -e '/^exclude = kernel/d' /etc/yum.conf
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# Location of files which contains list of protected files
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PROTECTED_FILE_LIST='/var/lib/qubes/protected-files'
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# qubes-core-vm has been broken for some time - it overrides /etc/hosts; restore original content
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if ! grep -q localhost /etc/hosts; then
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cat <<EOF > /etc/hosts
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if ! grep -q "^/etc/hosts$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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if ! grep -q localhost /etc/hosts; then
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cat <<EOF > /etc/hosts
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127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 `hostname`
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::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
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EOF
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fi
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fi
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# ensure that hostname resolves to 127.0.0.1 resp. ::1 and that /etc/hosts is
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# in the form expected by qubes-sysinit.sh
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for ip in '127\.0\.0\.1' '::1'; do
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if grep -q "^${ip}\(\s\|$\)" /etc/hosts; then
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sed -i "/^${ip}\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts
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sed -i "s/^${ip}\(\s\|$\).*$/\0 `hostname`/" /etc/hosts
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else
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echo "${ip} `hostname`" >> /etc/hosts
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fi
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done
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if ! grep -q "^/etc/hostname$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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for ip in '127\.0\.0\.1' '::1'; do
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if grep -q "^${ip}\(\s\|$\)" /etc/hosts; then
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sed -i "/^${ip}\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts
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sed -i "s/^${ip}\(\s\|$\).*$/\0 `hostname`/" /etc/hosts
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else
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echo "${ip} `hostname`" >> /etc/hosts
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fi
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done
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fi
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# Copy ip(|6)tables into place if they do not already exist in filesystem.
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# This prevents conflict with iptables-service
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@ -16,25 +16,37 @@ start()
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chmod 666 /proc/u2mfn
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mkdir -p /var/run/xen-hotplug
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mkdir -p /var/run/qubes
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chgrp qubes /var/run/qubes
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chmod 0775 /var/run/qubes
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name=$(/usr/bin/qubesdb-read /name)
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if ! [ -f /etc/this-is-dvm ] ; then
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# we don't want to set hostname for DispVM
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# because it makes some of the pre-created dotfiles invalid (e.g. .kde/cache-<hostname>)
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# (let's be frank: nobody's gonna use xterm on DispVM)
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hostname $name
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sed -i "s/^\(127\.0\.0\.1[\t ].*\) \($name \)\?\(.*\)/\1\2 $name/" /etc/hosts
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# Location of files which contains list of protected files
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PROTECTED_FILE_LIST='/var/lib/qubes/protected-files'
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# Set the hostname
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if ! grep -q "^/etc/hostname$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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name=$(/usr/bin/qubesdb-read /name)
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if ! [ -f /etc/this-is-dvm ] ; then
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# we don't want to set hostname for DispVM
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# because it makes some of the pre-created dotfiles invalid (e.g. .kde/cache-<hostname>)
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# (let's be frank: nobody's gonna use xterm on DispVM)
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hostname $name
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sed -i "s/^\(127\.0\.0\.1[\t ].*\) \($name \)\?\(.*\)/\1\2 $name/" /etc/hosts
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fi
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fi
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timezone=`/usr/bin/qubesdb-read /qubes-timezone 2> /dev/null`
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if [ -n "$timezone" ]; then
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ln -f /usr/share/zoneinfo/$timezone /etc/localtime
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echo "# Clock configuration autogenerated based on Qubes dom0 settings" > /etc/sysconfig/clock
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echo "ZONE=\"$timezone\"" >> /etc/sysconfig/clock
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# Set the timezone
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if ! grep -q "^/etc/timezone$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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timezone=`/usr/bin/qubesdb-read /qubes-timezone 2> /dev/null`
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if [ -n "$timezone" ]; then
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ln -f /usr/share/zoneinfo/$timezone /etc/localtime
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echo "# Clock configuration autogenerated based on Qubes dom0 settings" > /etc/sysconfig/clock
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echo "ZONE=\"$timezone\"" >> /etc/sysconfig/clock
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fi
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fi
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yum_proxy_setup=$(/usr/bin/qubesdb-read /qubes-service/yum-proxy-setup 2> /dev/null || /usr/bin/qubesdb-read /qubes-service/updates-proxy-setup 2> /dev/null)
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type=$(/usr/bin/qubesdb-read /qubes-vm-type)
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type=$(/usr/bin/qubesdb-read /qubes-vm-type)
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if [ "$yum_proxy_setup" != "0" ] || [ -z "$yum_proxy_setup" -a "$type" == "TemplateVM" ]; then
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echo proxy=http://10.137.255.254:8082/ > /etc/yum.conf.d/qubes-proxy.conf
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else
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@ -47,10 +59,6 @@ start()
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# qubesdb-read fails
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INTERFACE=eth0 /usr/lib/qubes/setup-ip
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mkdir -p /var/run/qubes
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chgrp qubes /var/run/qubes
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chmod 0775 /var/run/qubes
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if [ -e /dev/xvdb ] ; then
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# check if private.img (xvdb) is empty - all zeros
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private_size_512=`blockdev --getsz /dev/xvdb`
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@ -64,11 +72,11 @@ start()
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resize2fs /dev/xvdb 2> /dev/null || echo "'resize2fs /dev/xvdb' failed"
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if ! [ -d /rw/home ] ; then
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echo
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echo "--> Virgin boot of the VM: Linking /home to /rw/home"
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echo
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echo "--> Virgin boot of the VM: Linking /home to /rw/home"
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mkdir -p /rw/config
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cat > /rw/config/rc.local <<EOF
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mkdir -p /rw/config
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cat > /rw/config/rc.local <<EOF
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#!/bin/sh
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# This script will be executed at every VM startup, you can place your own
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@ -10,6 +10,9 @@ DEFAULT_ENABLED="meminfo-writer"
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QDB_READ=qubesdb-read
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QDB_LS=qubesdb-multiread
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# Location of files which contains list of protected files
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PROTECTED_FILE_LIST='/var/lib/qubes/protected-files'
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read_service() {
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$QDB_READ /qubes-service/$1 2> /dev/null
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}
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@ -67,26 +70,31 @@ for srv in `$QDB_LS /qubes-service/ 2>/dev/null |grep ' = 0'|cut -f 1 -d ' '`; d
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done
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# Set the hostname
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name=`$QDB_READ /name`
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if [ -n "$name" ]; then
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hostname $name
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if [ -e /etc/debian_version ]; then
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ipv4_localhost_re="127\.0\.1\.1"
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else
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ipv4_localhost_re="127\.0\.0\.1"
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if ! grep -q "^/etc/hostname$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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name=`$QDB_READ /name`
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if [ -n "$name" ]; then
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hostname $name
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if [ -e /etc/debian_version ]; then
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ipv4_localhost_re="127\.0\.1\.1"
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else
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ipv4_localhost_re="127\.0\.0\.1"
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fi
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sed -i "s/^\($ipv4_localhost_re\(\s.*\)*\s\).*$/\1${name}/" /etc/hosts
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sed -i "s/^\(::1\(\s.*\)*\s\).*$/\1${name}/" /etc/hosts
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fi
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sed -i "s/^\($ipv4_localhost_re\(\s.*\)*\s\).*$/\1${name}/" /etc/hosts
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sed -i "s/^\(::1\(\s.*\)*\s\).*$/\1${name}/" /etc/hosts
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fi
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timezone=`$QDB_READ /qubes-timezone 2> /dev/null`
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if [ -n "$timezone" ]; then
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cp -p /usr/share/zoneinfo/$timezone /etc/localtime
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if [ -e /etc/debian_version ]; then
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echo "$timezone" > /etc/timezone
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else
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echo "# Clock configuration autogenerated based on Qubes dom0 settings" > /etc/sysconfig/clock
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echo "ZONE=\"$timezone\"" >> /etc/sysconfig/clock
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# Set the timezone
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if ! grep -q "^/etc/timezone$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
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timezone=`$QDB_READ /qubes-timezone 2> /dev/null`
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if [ -n "$timezone" ]; then
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cp -p /usr/share/zoneinfo/$timezone /etc/localtime
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if [ -e /etc/debian_version ]; then
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echo "$timezone" > /etc/timezone
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else
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echo "# Clock configuration autogenerated based on Qubes dom0 settings" > /etc/sysconfig/clock
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echo "ZONE=\"$timezone\"" >> /etc/sysconfig/clock
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fi
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fi
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fi
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