diff options
Diffstat (limited to 'rpi2-gen-image.sh')
| -rwxr-xr-x | rpi2-gen-image.sh | 448 |
1 files changed, 108 insertions, 340 deletions
diff --git a/rpi2-gen-image.sh b/rpi2-gen-image.sh index c974731..f86a7ca 100755 --- a/rpi2-gen-image.sh +++ b/rpi2-gen-image.sh @@ -30,11 +30,17 @@ cleanup (){ trap - 0 1 2 3 6 } +# Exec command in chroot +chroot_exec() { + LANG=C LC_ALL=C chroot $R $* +} + set -e set -x # Debian release RELEASE=${RELEASE:=jessie} +KERNEL=${KERNEL:=3.18.0-trunk-rpi2} # Build settings BASEDIR=./images/${RELEASE} @@ -49,6 +55,7 @@ XKBMODEL=${XKBMODEL:=""} XKBLAYOUT=${XKBLAYOUT:=""} XKBVARIANT=${XKBVARIANT:=""} XKBOPTIONS=${XKBOPTIONS:=""} +EXPANDROOT=${EXPANDROOT:=true} # Network settings ENABLE_DHCP=${ENABLE_DHCP:=true} @@ -76,6 +83,10 @@ ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true} ENABLE_MINGPU=${ENABLE_MINGPU:=false} ENABLE_XORG=${ENABLE_XORG:=false} ENABLE_WM=${ENABLE_WM:=""} +ENABLE_RSYSLOG=${ENABLE_RSYSLOG:=true} +ENABLE_USER=${ENABLE_USER:=true} +ENABLE_ROOT=${ENABLE_ROOT:=false} +ENABLE_ROOT_SSH=${ENABLE_ROOT_SSH:=false} # Advanced settings ENABLE_MINBASE=${ENABLE_MINBASE:=false} @@ -148,6 +159,11 @@ else APT_INCLUDES="${APT_INCLUDES},locales,keyboard-configuration,console-setup" fi +# Add parted package, required to get partprobe utility +if [ "$EXPANDROOT" = true ] ; then + APT_INCLUDES="${APT_INCLUDES},parted" +fi + # Add dbus package, recommended if using systemd if [ "$ENABLE_DBUS" = true ] ; then APT_INCLUDES="${APT_INCLUDES},dbus" @@ -173,6 +189,10 @@ if [ "$ENABLE_HWRANDOM" = true ] ; then APT_INCLUDES="${APT_INCLUDES},rng-tools" fi +if [ "$ENABLE_USER" = true ]; then + APT_INCLUDES="${APT_INCLUDES},sudo" +fi + # Add fbturbo video driver if [ "$ENABLE_FBTURBO" = true ] ; then # Enable xorg package dependencies @@ -228,12 +248,12 @@ EOM # Set up timezone echo ${TIMEZONE} >$R/etc/timezone -LANG=C chroot $R dpkg-reconfigure -f noninteractive tzdata +chroot_exec dpkg-reconfigure -f noninteractive tzdata # Upgrade collabora package index and install collabora keyring echo "deb https://repositories.collabora.co.uk/debian ${RELEASE} rpi2" >$R/etc/apt/sources.list -LANG=C chroot $R apt-get -qq -y update -LANG=C chroot $R apt-get -qq -y --force-yes install collabora-obs-archive-keyring +chroot_exec apt-get -qq -y update +chroot_exec apt-get -qq -y --force-yes install collabora-obs-archive-keyring # Set up initial sources.list cat <<EOM >$R/etc/apt/sources.list @@ -250,8 +270,8 @@ deb https://repositories.collabora.co.uk/debian ${RELEASE} rpi2 EOM # Upgrade package index and update all installed packages and changed dependencies -LANG=C chroot $R apt-get -qq -y update -LANG=C chroot $R apt-get -qq -y -u dist-upgrade +chroot_exec apt-get -qq -y update +chroot_exec apt-get -qq -y -u dist-upgrade # Set up default locale and keyboard configuration if [ "$ENABLE_MINBASE" = false ] ; then @@ -259,60 +279,50 @@ if [ "$ENABLE_MINBASE" = false ] ; then # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684134 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=685957 # ... so we have to set locales manually if [ "$DEFLOCAL" = "en_US.UTF-8" ] ; then - LANG=C chroot $R echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8" | debconf-set-selections + chroot_exec echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8" | debconf-set-selections else # en_US.UTF-8 should be available anyway : https://www.debian.org/doc/manuals/debian-reference/ch08.en.html#_the_reconfiguration_of_the_locale - LANG=C chroot $R echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, ${DEFLOCAL} UTF-8" | debconf-set-selections - LANG=C chroot $R sed -i "/en_US.UTF-8/s/^#//" /etc/locale.gen + chroot_exec echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, ${DEFLOCAL} UTF-8" | debconf-set-selections + chroot_exec sed -i "/en_US.UTF-8/s/^#//" /etc/locale.gen fi - LANG=C chroot $R sed -i "/${DEFLOCAL}/s/^#//" /etc/locale.gen - LANG=C chroot $R echo "locales locales/default_environment_locale select ${DEFLOCAL}" | debconf-set-selections - LANG=C chroot $R locale-gen - LANG=C chroot $R update-locale LANG=${DEFLOCAL} + chroot_exec sed -i "/${DEFLOCAL}/s/^#//" /etc/locale.gen + chroot_exec echo "locales locales/default_environment_locale select ${DEFLOCAL}" | debconf-set-selections + chroot_exec locale-gen + chroot_exec update-locale LANG=${DEFLOCAL} # Keyboard configuration, if requested if [ "$XKBMODEL" != "" ] ; then - LANG=C chroot $R sed -i "s/^XKBMODEL.*/XKBMODEL=\"${XKBMODEL}\"/" /etc/default/keyboard + chroot_exec sed -i "s/^XKBMODEL.*/XKBMODEL=\"${XKBMODEL}\"/" /etc/default/keyboard fi if [ "$XKBLAYOUT" != "" ] ; then - LANG=C chroot $R sed -i "s/^XKBLAYOUT.*/XKBLAYOUT=\"${XKBLAYOUT}\"/" /etc/default/keyboard + chroot_exec sed -i "s/^XKBLAYOUT.*/XKBLAYOUT=\"${XKBLAYOUT}\"/" /etc/default/keyboard fi if [ "$XKBVARIANT" != "" ] ; then - LANG=C chroot $R sed -i "s/^XKBVARIANT.*/XKBVARIANT=\"${XKBVARIANT}\"/" /etc/default/keyboard + chroot_exec sed -i "s/^XKBVARIANT.*/XKBVARIANT=\"${XKBVARIANT}\"/" /etc/default/keyboard fi if [ "$XKBOPTIONS" != "" ] ; then - LANG=C chroot $R sed -i "s/^XKBOPTIONS.*/XKBOPTIONS=\"${XKBOPTIONS}\"/" /etc/default/keyboard + chroot_exec sed -i "s/^XKBOPTIONS.*/XKBOPTIONS=\"${XKBOPTIONS}\"/" /etc/default/keyboard fi - LANG=C chroot $R dpkg-reconfigure -f noninteractive keyboard-configuration + chroot_exec dpkg-reconfigure -f noninteractive keyboard-configuration # Set up font console case "${DEFLOCAL}" in *UTF-8) - LANG=C chroot $R sed -i 's/^CHARMAP.*/CHARMAP="UTF-8"/' /etc/default/console-setup + chroot_exec sed -i 's/^CHARMAP.*/CHARMAP="UTF-8"/' /etc/default/console-setup ;; *) - LANG=C chroot $R sed -i 's/^CHARMAP.*/CHARMAP="guess"/' /etc/default/console-setup + chroot_exec sed -i 's/^CHARMAP.*/CHARMAP="guess"/' /etc/default/console-setup ;; esac - LANG=C chroot $R dpkg-reconfigure -f noninteractive console-setup + chroot_exec dpkg-reconfigure -f noninteractive console-setup fi # Kernel installation # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot -LANG=C chroot $R apt-get -qq -y --no-install-recommends install linux-image-3.18.0-trunk-rpi2 -LANG=C chroot $R apt-get -qq -y install flash-kernel +chroot_exec apt-get -qq -y --no-install-recommends install linux-image-${KERNEL} raspberrypi-bootloader-nokernel +chroot_exec apt-get -qq -y install flash-kernel VMLINUZ="$(ls -1 $R/boot/vmlinuz-* | sort | tail -n 1)" [ -z "$VMLINUZ" ] && exit 1 -mkdir -p $R/boot/firmware - -# required boot binaries from raspberry/firmware github (commit: "kernel: Bump to 3.18.10") -wget -q -O $R/boot/firmware/bootcode.bin https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/bootcode.bin -wget -q -O $R/boot/firmware/fixup_cd.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup_cd.dat -wget -q -O $R/boot/firmware/fixup.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup.dat -wget -q -O $R/boot/firmware/fixup_x.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup_x.dat -wget -q -O $R/boot/firmware/start_cd.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start_cd.elf -wget -q -O $R/boot/firmware/start.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start.elf -wget -q -O $R/boot/firmware/start_x.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start_x.elf cp $VMLINUZ $R/boot/firmware/kernel7.img # Set up IPv4 hosts @@ -374,17 +384,27 @@ EOM fi # Enable systemd-networkd service -LANG=C chroot $R systemctl enable systemd-networkd +chroot_exec systemctl enable systemd-networkd # Generate crypt(3) password string ENCRYPTED_PASSWORD=`mkpasswd -m sha-512 ${PASSWORD}` # Set up default user -LANG=C chroot $R adduser --gecos "Raspberry PI user" --add_extra_groups --disabled-password pi -LANG=C chroot $R usermod -a -G sudo -p "${ENCRYPTED_PASSWORD}" pi +if [ "$ENABLE_USER" = true ] ; then + chroot_exec adduser --gecos \"Raspberry\ PI\ user\" --add_extra_groups --disabled-password pi + chroot_exec usermod -a -G sudo -p "${ENCRYPTED_PASSWORD}" pi +fi + +# Set up root password or not +if [ "$ENABLE_ROOT" = true ]; then + chroot_exec usermod -p "${ENCRYPTED_PASSWORD}" root -# Set up root password -LANG=C chroot $R usermod -p "${ENCRYPTED_PASSWORD}" root + if [ "$ENABLE_ROOT_SSH" = true ]; then + sed -i 's|[#]*PermitRootLogin.*|PermitRootLogin yes|g' $R/etc/ssh/sshd_config + fi +else + chroot_exec usermod -p \'!\' root +fi # Set up firmware boot cmdline CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1" @@ -402,51 +422,7 @@ fi echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt # Set up firmware config -cat <<EOM >$R/boot/firmware/config.txt -# For more options and information see -# http://www.raspberrypi.org/documentation/configuration/config-txt.md -# Some settings may impact device functionality. See link above for details - -# uncomment if you get no picture on HDMI for a default "safe" mode -#hdmi_safe=1 - -# uncomment this if your display has a black border of unused pixels visible -# and your display can output without overscan -#disable_overscan=1 - -# uncomment the following to adjust overscan. Use positive numbers if console -# goes off screen, and negative if there is too much border -#overscan_left=16 -#overscan_right=16 -#overscan_top=16 -#overscan_bottom=16 - -# uncomment to force a console size. By default it will be display's size minus -# overscan. -#framebuffer_width=1280 -#framebuffer_height=720 - -# uncomment if hdmi display is not detected and composite is being output -#hdmi_force_hotplug=1 - -# uncomment to force a specific HDMI mode (this will force VGA) -#hdmi_group=1 -#hdmi_mode=1 - -# uncomment to force a HDMI mode rather than DVI. This can make audio work in -# DMT (computer monitor) modes -#hdmi_drive=2 - -# uncomment to increase signal to HDMI, if you have interference, blanking, or -# no display -#config_hdmi_boost=4 - -# uncomment for composite PAL -#sdtv_mode=2 - -# uncomment to overclock the arm. 700 MHz is the default. -#arm_freq=800 -EOM +install -o root -g root -m 644 files/config.txt $R/boot/firmware/config.txt # Load snd_bcm2835 kernel module at boot time if [ "$ENABLE_SOUND" = true ] ; then @@ -476,99 +452,17 @@ fi mkdir -p $R/etc/modprobe.d/ # Blacklist sound modules -cat <<EOM >$R/etc/modprobe.d/raspi-blacklist.conf -blacklist snd_soc_core -blacklist snd_pcm -blacklist snd_pcm_dmaengine -blacklist snd_timer -blacklist snd_compress -blacklist snd_soc_pcm512x_i2c -blacklist snd_soc_pcm512x -blacklist snd_soc_tas5713 -blacklist snd_soc_wm8804 -EOM +install -o root -g root -m 644 files/modprobe.d/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf # Create default fstab -cat <<EOM >$R/etc/fstab -/dev/mmcblk0p2 / ext4 noatime,nodiratime,errors=remount-ro,discard,data=writeback,commit=100 0 1 -/dev/mmcblk0p1 /boot/firmware vfat defaults,noatime,nodiratime 0 2 -EOM - -# Avoid swapping and increase cache sizes -cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf +install -o root -g root -m 644 files/fstab $R/etc/fstab # Avoid swapping and increase cache sizes -vm.swappiness=1 -vm.dirty_background_ratio=20 -vm.dirty_ratio=40 -vm.dirty_writeback_centisecs=500 -vm.dirty_expire_centisecs=6000 -EOM +install -o root -g root -m 644 files/sysctl.d/81-rpi-vm.conf $R/etc/sysctl.d/81-rpi-vm.conf # Enable network stack hardening if [ "$ENABLE_HARDNET" = true ] ; then - cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf - -# Enable network stack hardening -net.ipv4.tcp_timestamps=0 -net.ipv4.tcp_syncookies=1 -net.ipv4.conf.all.rp_filter=1 -net.ipv4.conf.all.accept_redirects=0 -net.ipv4.conf.all.send_redirects=0 -net.ipv4.conf.all.accept_source_route=0 -net.ipv4.conf.default.rp_filter=1 -net.ipv4.conf.default.accept_redirects=0 -net.ipv4.conf.default.send_redirects=0 -net.ipv4.conf.default.accept_source_route=0 -net.ipv4.conf.lo.accept_redirects=0 -net.ipv4.conf.lo.send_redirects=0 -net.ipv4.conf.lo.accept_source_route=0 -net.ipv4.conf.eth0.accept_redirects=0 -net.ipv4.conf.eth0.send_redirects=0 -net.ipv4.conf.eth0.accept_source_route=0 -net.ipv4.icmp_echo_ignore_broadcasts=1 -net.ipv4.icmp_ignore_bogus_error_responses=1 - -net.ipv6.conf.all.accept_redirects=0 -net.ipv6.conf.all.accept_source_route=0 -net.ipv6.conf.all.router_solicitations=0 -net.ipv6.conf.all.accept_ra_rtr_pref=0 -net.ipv6.conf.all.accept_ra_pinfo=0 -net.ipv6.conf.all.accept_ra_defrtr=0 -net.ipv6.conf.all.autoconf=0 -net.ipv6.conf.all.dad_transmits=0 -net.ipv6.conf.all.max_addresses=1 - -net.ipv6.conf.default.accept_redirects=0 -net.ipv6.conf.default.accept_source_route=0 -net.ipv6.conf.default.router_solicitations=0 -net.ipv6.conf.default.accept_ra_rtr_pref=0 -net.ipv6.conf.default.accept_ra_pinfo=0 -net.ipv6.conf.default.accept_ra_defrtr=0 -net.ipv6.conf.default.autoconf=0 -net.ipv6.conf.default.dad_transmits=0 -net.ipv6.conf.default.max_addresses=1 - -net.ipv6.conf.lo.accept_redirects=0 -net.ipv6.conf.lo.accept_source_route=0 -net.ipv6.conf.lo.router_solicitations=0 -net.ipv6.conf.lo.accept_ra_rtr_pref=0 -net.ipv6.conf.lo.accept_ra_pinfo=0 -net.ipv6.conf.lo.accept_ra_defrtr=0 -net.ipv6.conf.lo.autoconf=0 -net.ipv6.conf.lo.dad_transmits=0 -net.ipv6.conf.lo.max_addresses=1 - -net.ipv6.conf.eth0.accept_redirects=0 -net.ipv6.conf.eth0.accept_source_route=0 -net.ipv6.conf.eth0.router_solicitations=0 -net.ipv6.conf.eth0.accept_ra_rtr_pref=0 -net.ipv6.conf.eth0.accept_ra_pinfo=0 -net.ipv6.conf.eth0.accept_ra_defrtr=0 -net.ipv6.conf.eth0.autoconf=0 -net.ipv6.conf.eth0.dad_transmits=0 -net.ipv6.conf.eth0.max_addresses=1 -EOM + install -o root -g root -m 644 files/sysctl.d/81-rpi-net-hardening.conf $R/etc/sysctl.d/81-rpi-net-hardening.conf # Enable resolver warnings about spoofed addresses cat <<EOM >>$R/etc/host.conf @@ -576,15 +470,36 @@ spoof warn EOM fi -# Regenerate openssh server host keys +# First boot actions +cat files/firstboot/10-begin.sh > $R/etc/rc.firstboot + +# Ensure openssh server host keys are regenerated on first boot if [ "$ENABLE_SSHD" = true ] ; then - rm -fr $R/etc/ssh/ssh_host_* - LANG=C chroot $R dpkg-reconfigure openssh-server + cat files/firstboot/21-generate-ssh-keys.sh >> $R/etc/rc.firstboot + rm -f $R/etc/ssh/ssh_host_* +fi + +if [ "$EXPANDROOT" = true ] ; then + cat files/firstboot/22-expandroot.sh >> $R/etc/rc.firstboot +fi + +cat files/firstboot/99-finish.sh >> $R/etc/rc.firstboot +chmod +x $R/etc/rc.firstboot + +sed -i '/exit 0/d' $R/etc/rc.local +echo /etc/rc.firstboot >> $R/etc/rc.local +echo exit 0 >> $R/etc/rc.local + +# Disable rsyslog +if [ "$ENABLE_RSYSLOG" = false ]; then + sed -i 's|[#]*ForwardToSyslog=yes|ForwardToSyslog=no|g' $R/etc/systemd/journald.conf + chroot_exec systemctl disable rsyslog + chroot_exec apt-get purge -q -y --force-yes rsyslog fi # Enable serial console systemd style if [ "$ENABLE_CONSOLE" = true ] ; then - LANG=C chroot $R systemctl enable serial-getty\@ttyAMA0.service + chroot_exec systemctl enable serial-getty\@ttyAMA0.service fi # Enable firewall based on iptables started by systemd service @@ -593,177 +508,30 @@ if [ "$ENABLE_IPTABLES" = true ] ; then mkdir -p "$R/etc/iptables" # Create iptables systemd service - cat <<EOM >$R/etc/systemd/system/iptables.service -[Unit] -Description=Packet Filtering Framework -DefaultDependencies=no -After=systemd-sysctl.service -Before=sysinit.target -[Service] -Type=oneshot -ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules -ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules -ExecStop=/etc/iptables/flush-iptables.sh -RemainAfterExit=yes -[Install] -WantedBy=multi-user.target -EOM + install -o root -g root -m 644 files/iptables/iptables.service $R/etc/systemd/system/iptables.service # Create flush-table script called by iptables service - cat <<EOM >$R/etc/iptables/flush-iptables.sh -#!/bin/sh -iptables -F -iptables -X -iptables -t nat -F -iptables -t nat -X -iptables -t mangle -F -iptables -t mangle -X -iptables -P INPUT ACCEPT -iptables -P FORWARD ACCEPT -iptables -P OUTPUT ACCEPT -EOM + install -o root -g root -m 755 files/iptables/flush-iptables.sh $R/etc/iptables/flush-iptables.sh # Create iptables rule file - cat <<EOM >$R/etc/iptables/iptables.rules -*filter -:INPUT DROP [0:0] -:FORWARD DROP [0:0] -:OUTPUT ACCEPT [0:0] -:TCP - [0:0] -:UDP - [0:0] -:SSH - [0:0] - -# Rate limit ping requests --A INPUT -p icmp --icmp-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT --A INPUT -p icmp --icmp-type echo-request -j DROP - -# Accept established connections --A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT - -# Accept all traffic on loopback interface --A INPUT -i lo -j ACCEPT - -# Drop packets declared invalid --A INPUT -m conntrack --ctstate INVALID -j DROP - -# SSH rate limiting --A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH --A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP --A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP --A SSH -m recent --name sshbf --set -j ACCEPT - -# Send TCP and UDP connections to their respective rules chain --A INPUT -p udp -m conntrack --ctstate NEW -j UDP --A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP - -# Reject dropped packets with a RFC compliant responce --A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable --A INPUT -p tcp -j REJECT --reject-with tcp-rst --A INPUT -j REJECT --reject-with icmp-proto-unreachable - -## TCP PORT RULES -# -A TCP -p tcp -j LOG - -## UDP PORT RULES -# -A UDP -p udp -j LOG - -COMMIT -EOM + install -o root -g root -m 644 files/iptables/iptables.rules $R/etc/iptables/iptables.rules # Reload systemd configuration and enable iptables service - LANG=C chroot $R systemctl daemon-reload - LANG=C chroot $R systemctl enable iptables.service + chroot_exec systemctl daemon-reload + chroot_exec systemctl enable iptables.service if [ "$ENABLE_IPV6" = true ] ; then # Create ip6tables systemd service - cat <<EOM >$R/etc/systemd/system/ip6tables.service -[Unit] -Description=Packet Filtering Framework -DefaultDependencies=no -After=systemd-sysctl.service -Before=sysinit.target -[Service] -Type=oneshot -ExecStart=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules -ExecReload=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules -ExecStop=/etc/iptables/flush-ip6tables.sh -RemainAfterExit=yes -[Install] -WantedBy=multi-user.target -EOM + install -o root -g root -m 644 files/iptables/ip6tables.service $R/etc/systemd/system/ip6tables.service # Create ip6tables file - cat <<EOM >$R/etc/iptables/flush-ip6tables.sh -#!/bin/sh -ip6tables -F -ip6tables -X -ip6tables -Z -for table in $(</proc/net/ip6_tables_names) -do - ip6tables -t \$table -F - ip6tables -t \$table -X - ip6tables -t \$table -Z -done -ip6tables -P INPUT ACCEPT -ip6tables -P OUTPUT ACCEPT -ip6tables -P FORWARD ACCEPT -EOM - - # Create ip6tables rule file - cat <<EOM >$R/etc/iptables/ip6tables.rules -*filter -:INPUT DROP [0:0] -:FORWARD DROP [0:0] -:OUTPUT ACCEPT [0:0] -:TCP - [0:0] -:UDP - [0:0] -:SSH - [0:0] + install -o root -g root -m 755 files/iptables/flush-ip6tables.sh $R/etc/iptables/flush-ip6tables.sh -# Drop packets with RH0 headers --A INPUT -m rt --rt-type 0 -j DROP --A OUTPUT -m rt --rt-type 0 -j DROP --A FORWARD -m rt --rt-type 0 -j DROP + install -o root -g root -m 644 files/iptables/ip6tables.rules $R/etc/iptables/ip6tables.rules -# Rate limit ping requests --A INPUT -p icmpv6 --icmpv6-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT --A INPUT -p icmpv6 --icmpv6-type echo-request -j DROP - -# Accept established connections --A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT - -# Accept all traffic on loopback interface --A INPUT -i lo -j ACCEPT - -# Drop packets declared invalid --A INPUT -m conntrack --ctstate INVALID -j DROP - -# SSH rate limiting --A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH --A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP --A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP --A SSH -m recent --name sshbf --set -j ACCEPT - -# Send TCP and UDP connections to their respective rules chain --A INPUT -p udp -m conntrack --ctstate NEW -j UDP --A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP - -# Reject dropped packets with a RFC compliant responce --A INPUT -p udp -j REJECT --reject-with icmp6-adm-prohibited --A INPUT -p tcp -j REJECT --reject-with icmp6-adm-prohibited --A INPUT -j REJECT --reject-with icmp6-adm-prohibited - -## TCP PORT RULES -# -A TCP -p tcp -j LOG - -## UDP PORT RULES -# -A UDP -p udp -j LOG - -COMMIT -EOM - - # Reload systemd configuration and enable iptables service - LANG=C chroot $R systemctl daemon-reload - LANG=C chroot $R systemctl enable ip6tables.service + # Reload systemd configuration and enable iptables service + chroot_exec systemctl daemon-reload + chroot_exec systemctl enable ip6tables.service fi fi @@ -775,7 +543,7 @@ fi # Install gcc/c++ build environment inside the chroot if [ "$ENABLE_UBOOT" = true ] || [ "$ENABLE_FBTURBO" = true ]; then - LANG=C chroot $R apt-get install -q -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc + chroot_exec apt-get install -q -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc fi # Fetch and build U-Boot bootloader @@ -784,7 +552,7 @@ if [ "$ENABLE_UBOOT" = true ] ; then git -C $R/tmp clone git://git.denx.de/u-boot.git # Build and install U-Boot inside chroot - LANG=C chroot $R make -C /tmp/u-boot/ rpi_2_defconfig all + chroot_exec make -C /tmp/u-boot/ rpi_2_defconfig all # Copy compiled bootloader binary and set config.txt to load it cp $R/tmp/u-boot/u-boot.bin $R/boot/firmware/ @@ -809,7 +577,7 @@ bootz \${kernel_addr_r} EOM # Generate U-Boot image from command file - LANG=C chroot $R mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi2 Boot Script" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr + chroot_exec mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi2 Boot Script" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr fi # Fetch and build fbturbo Xorg driver @@ -818,10 +586,10 @@ if [ "$ENABLE_FBTURBO" = true ] ; then git -C $R/tmp clone https://github.com/ssvb/xf86-video-fbturbo.git # Install Xorg build dependencies - LANG=C chroot $R apt-get install -q -y --no-install-recommends xorg-dev xutils-dev x11proto-dri2-dev libltdl-dev libtool automake libdrm-dev + chroot_exec apt-get install -q -y --no-install-recommends xorg-dev xutils-dev x11proto-dri2-dev libltdl-dev libtool automake libdrm-dev # Build and install fbturbo driver inside chroot - LANG=C chroot $R /bin/bash -c "cd /tmp/xf86-video-fbturbo; autoreconf -vi; ./configure --prefix=/usr; make; make install" + chroot_exec /bin/bash -c "cd /tmp/xf86-video-fbturbo; autoreconf -vi; ./configure --prefix=/usr; make; make install" # Add fbturbo driver to Xorg configuration cat <<EOM >$R/usr/share/X11/xorg.conf.d/99-fbturbo.conf @@ -834,18 +602,18 @@ EndSection EOM # Remove Xorg build dependencies - LANG=C chroot $R apt-get -q -y purge --auto-remove xorg-dev xutils-dev x11proto-dri2-dev libltdl-dev libtool automake libdrm-dev + chroot_exec apt-get -q -y purge --auto-remove xorg-dev xutils-dev x11proto-dri2-dev libltdl-dev libtool automake libdrm-dev fi # Remove gcc/c++ build environment from the chroot if [ "$ENABLE_UBOOT" = true ] || [ "$ENABLE_FBTURBO" = true ]; then - LANG=C chroot $R apt-get -y -q purge --auto-remove bc binutils cpp cpp-4.9 g++ g++-4.9 gcc gcc-4.9 libasan1 libatomic1 libc-dev-bin libc6-dev libcloog-isl4 libgcc-4.9-dev libgomp1 libisl10 libmpc3 libmpfr4 libstdc++-4.9-dev libubsan0 linux-compiler-gcc-4.9-arm linux-libc-dev make + chroot_exec apt-get -y -q purge --auto-remove bc binutils cpp cpp-4.9 g++ g++-4.9 gcc gcc-4.9 libasan1 libatomic1 libc-dev-bin libc6-dev libcloog-isl4 libgcc-4.9-dev libgomp1 libisl10 libmpc3 libmpfr4 libstdc++-4.9-dev libubsan0 linux-compiler-gcc-4.9-arm linux-libc-dev make fi # Clean cached downloads -LANG=C chroot $R apt-get -y clean -LANG=C chroot $R apt-get -y autoclean -LANG=C chroot $R apt-get -y autoremove +chroot_exec apt-get -y clean +chroot_exec apt-get -y autoclean +chroot_exec apt-get -y autoremove # Unmount mounted filesystems umount -l $R/proc |