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certidude
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Cleaned up LEDE image builder scripts

This commit is contained in:
Lauri Võsandi 2018-04-09 12:33:54 +00:00
parent 577962e09b
commit 3c27f333fd
5 changed files with 348 additions and 178 deletions
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119
doc/builder/ap.sh Normal file
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#!/bin/bash
source common.sh
uci set certidude.@authority[0].trigger=lan
cat << \EOF > $OVERLAY/etc/uci-defaults/40-hostname
MODEL=$(cat /etc/board.json | jsonfilter -e '@["model"]["id"]')
# Hostname prefix
case $MODEL in
tl-*|archer-*) VENDOR=tplink ;;
cf-*) VENDOR=comfast ;;
*) VENDOR=ap ;;
esac
# Network interface with relevant MAC address
case $MODEL in
tl-wdr*) NIC=wlan1 ;;
archer-*) NIC=eth1 ;;
cf-e380ac-v2) NIC=eth0 ;;
*) NIC=wlan0 ;;
esac
HOSTNAME=$VENDOR-$(cat /sys/class/net/$NIC/address | cut -d : -f 4- | sed -e 's/://g')
uci set system.@system[0].hostname=$HOSTNAME
uci set network.lan.hostname=$HOSTNAME
EOF
cat << \EOF > $OVERLAY/etc/uci-defaults/50-access-point
# Remove firewall rules since AP bridges ethernet to wireless anyway
uci delete firewall.@zone[1]
uci delete firewall.@zone[0]
uci delete firewall.@forwarding[0]
for j in $(seq 0 10); do uci delete firewall.@rule[0]; done
# Remove WAN interface
uci delete network.wan
uci delete network.wan6
# Reconfigure DHCP client for bridge over LAN and WAN ports
uci delete network.lan.ipaddr
uci delete network.lan.netmask
uci delete network.lan.ip6assign
uci delete network.globals.ula_prefix
uci delete network.@switch_vlan[1]
uci delete dhcp.@dnsmasq[0].domain
uci set network.lan.proto=dhcp
uci set network.lan.ipv6=0
uci set network.lan.ifname='eth0'
uci set network.lan.stp=1
# Radio ordering differs among models
case $(uci get wireless.radio0.hwmode) in
11a) uci rename wireless.radio0=radio5ghz;;
11g) uci rename wireless.radio0=radio2ghz;;
esac
case $(uci get wireless.radio1.hwmode) in
11a) uci rename wireless.radio1=radio5ghz;;
11g) uci rename wireless.radio1=radio2ghz;;
esac
# Reset virtual SSID-s
uci delete wireless.@wifi-iface[1]
uci delete wireless.@wifi-iface[0]
# Pseudorandomize channel selection, should work with 80MHz on 5GHz band
case $(uci get system.@system[0].hostname | md5sum) in
1*|2*|3*|4*) uci set wireless.radio2ghz.channel=1; uci set wireless.radio5ghz.channel=36 ;;
5*|6*|7*|8*) uci set wireless.radio2ghz.channel=5; uci set wireless.radio5ghz.channel=52 ;;
9*|0*|a*|b*) uci set wireless.radio2ghz.channel=9; uci set wireless.radio5ghz.channel=100 ;;
c*|d*|e*|f*) uci set wireless.radio2ghz.channel=13; uci set wireless.radio5ghz.channel=132 ;;
esac
# Create bridge for guests
uci set network.guest=interface
uci set network.guest.proto='static'
uci set network.guest.address='0.0.0.0'
uci set network.guest.type='bridge'
uci set network.guest.ifname='eth0.156' # tag id 156 for guest network
uci set network.guest.ipaddr='0.0.0.0'
uci set network.guest.ipv6=0
uci set network.guest.stp=1
# Add VPN interface for IPSec
uci set network.vpn=interface
uci set network.vpn.ifname='ipsec0'
uci set network.vpn.proto='none'
uci set firewall.vpn=zone
uci set firewall.vpn.name="vpn"
uci set firewall.vpn.input="ACCEPT"
uci set firewall.vpn.forward="ACCEPT"
uci set firewall.vpn.output="ACCEPT"
uci set firewall.vpn.network="vpn"
# Disable switch tagging and bridge all ports on TP-Link WDR3600/WDR4300
case $(cat /etc/board.json | jsonfilter -e '@["model"]["id"]') in
tl-wdr*|archer*)
uci set network.@switch[0].enable_vlan=0
uci set network.@switch_vlan[0].ports='0 1 2 3 4 5 6'
;;
*) ;;
esac
EOF
make -C $BUILD/$BASENAME image FILES=$OVERLAY PROFILE=$PROFILE PACKAGES="luci luci-app-commands \
openssl-util curl ca-certificates \
strongswan-mod-kernel-libipsec kmod-tun ip-full strongswan-full \
htop iftop tcpdump nmap nano -odhcp6c -odhcpd -dnsmasq \
-luci-app-firewall \
-pppd -luci-proto-ppp -kmod-ppp -ppp -ppp-mod-pppoe \
-kmod-ip6tables -ip6tables -luci-proto-ipv6 -kmod-iptunnel6 -kmod-ipsec6"

76
doc/builder/common.sh Normal file
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#!/bin/bash
set -e
set -x
umask 022
VERSION=17.01.4
BASENAME=lede-imagebuilder-$VERSION-ar71xx-generic.Linux-x86_64
FILENAME=$BASENAME.tar.xz
URL=http://downloads.lede-project.org/releases/$VERSION/targets/ar71xx/generic/$FILENAME
if [ ! -e $BUILD/$FILENAME ]; then
wget -q $URL -O $BUILD/$FILENAME
fi
if [ ! -e $BUILD/$BASENAME ]; then
tar xf $BUILD/$FILENAME -C $BUILD
fi
# Copy CA certificate
AUTHORITY=$(hostname -f)
CERTIDUDE_DIR=/var/lib/certidude/$AUTHORITY
mkdir -p $OVERLAY/etc/config
mkdir -p $OVERLAY/etc/uci-defaults
mkdir -p $OVERLAY/etc/certidude/authority/$AUTHORITY
cp /var/lib/certidude/$AUTHORITY/ca_cert.pem $OVERLAY/etc/certidude/authority/$AUTHORITY/
cat <<EOF > $OVERLAY/etc/config/certidude
config authority
option gateway router.k-space.ee
option url http://$AUTHORITY
option trigger wan
option authority_path /etc/certidude/authority/$AUTHORITY/ca_cert.pem
option request_path /etc/certidude/authority/$AUTHORITY/client_req.pem
option certificate_path /etc/certidude/authority/$AUTHORITY/client_cert.pem
option key_path /etc/certidude/authority/$AUTHORITY/client_key.pem
option key_type rsa
option key_length 2048
EOF
cat << EOF > $OVERLAY/etc/uci-defaults/40-disable-ipsec
/etc/init.d/ipsec disable
EOF
cat << EOF > $OVERLAY/etc/ipsec.secrets
: RSA /etc/certidude/authority/$AUTHORITY/client_key.pem
EOF
cat << EOF > $OVERLAY/etc/ipsec.conf
config setup
ca $AUTHORITY
cacert=/etc/certidude/authority/$AUTHORITY/ca_cert.pem
auto=add
conn router.k-space.ee
right=router.k-space.ee
dpdaction=restart
auto=start
rightsubnet=0.0.0.0/0
rightid=%any
leftsourceip=%config
keyexchange=ikev2
closeaction=restart
leftcert=/etc/certidude/authority/$AUTHORITY/client_cert.pem
left=%defaultroute
EOF

43
doc/builder/ipcam.sh Normal file
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#!/bin/bash
. common.sh
cat << \EOF > $OVERLAY/etc/uci-defaults/40-hostname
HOSTNAME=cam-$(cat /sys/class/net/eth0/address | cut -d : -f 4- | sed -e 's/://g')
uci set system.@system[0].hostname=$HOSTNAME
uci set network.wan.hostname=$HOSTNAME
EOF
touch $OVERLAY/etc/config/wireless
cat << EOF > $OVERLAY/etc/uci-defaults/50-ipcam
uci delete network.lan
uci delete network.wan6
uci set network.vpn=interface
uci set network.vpn.ifname='ipsec0'
uci set network.vpn.proto='none'
uci set firewall.@zone[0].network=vpn
uci delete firewall.@forwarding[0]
uci set mjpg-streamer.core.enabled=1
uci set mjpg-streamer.core.quality=''
uci set mjpg-streamer.core.resolution='1280x720'
uci delete mjpg-streamer.core.username
uci delete mjpg-streamer.core.password
uci certidude.@authority[0].red_led='gl-connect:red:wlan'
uci certidude.@authority[0].green_led='gl-connect:green:lan'
/etc/init.d/dropbear disable
/etc/init.d/ipsec disable
EOF
make -C $BUILD/$BASENAME image FILES=$OVERLAY PROFILE=$PROFILE PACKAGES="openssl-util curl ca-certificates strongswan-full htop \
iftop tcpdump nmap nano mtr patch diffutils ipset usbutils luci luci-app-mjpg-streamer kmod-video-uvc \
pciutils -dnsmasq -odhcpd -odhcp6c -kmod-ath9k picocom strongswan-mod-kernel-libipsec kmod-tun ip-full"

110
doc/builder/mfp.sh Normal file
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#!/bin/bash
. common.sh
cat << \EOF > $OVERLAY/etc/uci-defaults/40-hostname
HOSTNAME=mfp-$(cat /sys/class/net/eth0/address | cut -d : -f 4- | sed -e 's/://g')
uci set system.@system[0].hostname=$HOSTNAME
uci set network.wan.hostname=$HOSTNAME
EOF
mkdir -p $OVERLAY/etc/config/
touch $OVERLAY/etc/config/wireless
cat << EOF > $OVERLAY/etc/uci-defaults/50-mfp
# Disable rebind protection for DNS
uci set dhcp.@dnsmasq[0].rebind_protection=0
uci set dhcp.@dnsmasq[0].domain='mfp.lan'
uci delete dhcp.@dnsmasq[0].local
# Disable bridge for LAN since WiFi is disabled
uci delete network.lan.type
uci set dhcp.lan.limit=1
uci set network.vpn=interface
uci set network.vpn.ifname='ipsec0'
uci set network.vpn.proto='none'
uci set firewall.vpn=zone
uci set firewall.vpn.name="vpn"
uci set firewall.vpn.input="ACCEPT"
uci set firewall.vpn.forward="ACCEPT"
uci set firewall.vpn.output="ACCEPT"
uci set firewall.vpn.network="vpn"
uci set firewall.lan2vpn=forwarding
uci set firewall.lan2vpn.src='lan'
uci set firewall.lan2vpn.dest='vpn'
uci add firewall redirect
uci set firewall.@redirect[-1].name="Allow IPP on MFP"
uci set firewall.@redirect[-1].src=vpn
uci set firewall.@redirect[-1].src_dport=631
uci set firewall.@redirect[-1].dest=lan
uci set firewall.@redirect[-1].dest_ip=192.168.1.100
uci set firewall.@redirect[-1].target=DNAT
uci set firewall.@redirect[-1].proto=tcp
uci add firewall redirect
uci set firewall.@redirect[-1].name="Allow HTTP on MFP"
uci set firewall.@redirect[-1].src=vpn
uci set firewall.@redirect[-1].src_dport=80
uci set firewall.@redirect[-1].dest=lan
uci set firewall.@redirect[-1].dest_ip=192.168.1.100
uci set firewall.@redirect[-1].target=DNAT
uci set firewall.@redirect[-1].proto=tcp
uci add firewall redirect
uci set firewall.@redirect[-1].name="Allow HTTPS on MFP"
uci set firewall.@redirect[-1].src=vpn
uci set firewall.@redirect[-1].src_dport=443
uci set firewall.@redirect[-1].dest=lan
uci set firewall.@redirect[-1].dest_ip=192.168.1.100
uci set firewall.@redirect[-1].target=DNAT
uci set firewall.@redirect[-1].proto=tcp
uci add firewall redirect
uci set firewall.@redirect[-1].name="Allow JetDirect on MFP"
uci set firewall.@redirect[-1].src=vpn
uci set firewall.@redirect[-1].src_dport=9100
uci set firewall.@redirect[-1].dest=lan
uci set firewall.@redirect[-1].dest_ip=192.168.1.100
uci set firewall.@redirect[-1].target=DNAT
uci set firewall.@redirect[-1].proto=tcp
uci set firewall.@redirect[-1].enabled=0
uci add firewall redirect
uci set firewall.@redirect[-1].name="Allow SNMP on MFP"
uci set firewall.@redirect[-1].src=vpn
uci set firewall.@redirect[-1].src_dport=161
uci set firewall.@redirect[-1].dest=lan
uci set firewall.@redirect[-1].dest_ip=192.168.1.100
uci set firewall.@redirect[-1].target=DNAT
uci set firewall.@redirect[-1].proto=udp
uci set firewall.@redirect[-1].enabled=0
uci add firewall redirect
uci set firewall.@redirect[-1].name="Allow LPD on MFP"
uci set firewall.@redirect[-1].src=vpn
uci set firewall.@redirect[-1].src_dport=515
uci set firewall.@redirect[-1].dest=lan
uci set firewall.@redirect[-1].dest_ip=192.168.1.100
uci set firewall.@redirect[-1].target=DNAT
uci set firewall.@redirect[-1].proto=tcp
uci set firewall.@redirect[-1].enabled=0
uci set uhttpd.main.listen_http=0.0.0.0:8080
/etc/init.d/dropbear disable
EOF
make -C $BUILD/$BASENAME image FILES=$OVERLAY PROFILE=$PROFILE PACKAGES="openssl-util curl ca-certificates htop \
iftop tcpdump nmap nano mtr patch diffutils ipset usbutils luci \
strongswan-mod-kernel-libipsec kmod-tun ip-full strongswan-full \
pciutils -odhcpd -odhcp6c -kmod-ath9k picocom libustream-openssl kmod-crypto-gcm"

178
doc/overlay/etc/hotplug.d/iface/50-certidude
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#!/bin/sh
# To paste, press Ctrl-D to finish: cat > /etc/hotplug.d/iface/50-certidude
# To test: ACTION=ifup INTERFACE=wan sh /etc/hotplug.d/iface/50-certidude
# TODO: renewal
AUTHORITY=certidude.@authority[0]
[ $ACTION == "ifup" ] || exit 0
[ $INTERFACE == "$(uci get $AUTHORITY.trigger)" ] || exit 0
# TODO: iterate over all authorities
URL=$(uci get $AUTHORITY.url)
GATEWAY=$(uci get $AUTHORITY.gateway)
COMMON_NAME=$(uci get $AUTHORITY.common_name)
if [ $? -ne 0 ]; then
COMMON_NAME=$(uci get system.@system[0].hostname)
fi
KEY_PATH=$(uci get $AUTHORITY.key_path)
KEY_TYPE=$(uci get $AUTHORITY.key_type)
KEY_LENGTH=$(uci get $AUTHORITY.key_length)
CERTIFICATE_PATH=$(uci get $AUTHORITY.certificate_path)
REQUEST_PATH=$(uci get $AUTHORITY.request_path)
AUTHORITY_PATH=$(uci get $AUTHORITY.authority_path)
RED_LED=/sys/class/leds/$(uci get $AUTHORITY.red_led)
GREEN_LED=/sys/class/leds/$(uci get $AUTHORITY.green_led)
NTP_SERVERS=$(uci get system.ntp.server)
logger -t certidude -s "Fetching time from NTP servers: $NTP_SERVERS"
ntpd -q -n -d -p $NTP_SERVERS
logger -t certidude -s "Time is now: $(date)"
# If certificate file is there assume everything's set up
if [ -f $CERTIFICATE_PATH ]; then
SERIAL=$(openssl x509 -in $CERTIFICATE_PATH -noout -serial | cut -d "=" -f 2 | tr [A-F] [a-f])
logger -t certidude -s "Certificate with serial $SERIAL already exists in $CERTIFICATE_PATH, attempting to bring up VPN tunnel..."
/etc/init.d/openvpn start
/etc/init.d/ipsec start
exit 0
fi
# Turn green off and red on
if [ -d $GREEN_LED ] && [ -d $RED_LED ]; then
echo timer > $GREEN_LED/trigger
echo 100 | tee $GREEN_LED/delay_*
echo none > $RED_LED/trigger
fi
#########################################
### Generate private key if necessary ###
#########################################
if [ ! -f $KEY_PATH ]; then
KEY_TEMP=$(mktemp -u)
logger -t certidude -s "Generating RSA key for VPN..."
if [ -d $GREEN_LED ]; then
echo 250 | tee $GREEN_LED/delay_*
fi
openssl gen$KEY_TYPE -out $KEY_TEMP $KEY_LENGTH
chmod 0600 $KEY_TEMP
mv $KEY_TEMP $KEY_PATH
fi
############################
### Fetch CA certificate ###
############################
if [ ! -f $AUTHORITY_PATH ]; then
AUTHORITY_TEMP=$(mktemp -u)
logger -t certidude -s "Fetching CA certificate from $URL/api/certificate/"
curl -f -s $URL/api/certificate/ > $AUTHORITY_TEMP
if [ $? -ne 0 ]; then
logger -t certidude -s "Failed to receive CA certificate, server responded: $(cat $AUTHORITY_TEMP)"
if [ -d $GREEN_LED ] && [ -d $RED_LED ]; then
echo none > $GREEN_LED/trigger
echo timer > $RED_LED/trigger
echo 100 | tee $RED_LED/delay_*
fi
exit 10
fi
openssl x509 -in $AUTHORITY_TEMP -noout
if [ $? -ne 0 ]; then
logger -t certidude -s "Received invalid CA certificate"
if [ -d $GREEN_LED ] && [ -d $RED_LED ]; then
echo none > $GREEN_LED/trigger
echo timer > $RED_LED/trigger
echo 250 | tee $RED_LED/delay_*
fi
exit 11
fi
mv $AUTHORITY_TEMP $AUTHORITY_PATH
fi
logger -t certidude -s "CA certificate md5sum: $(md5sum -b $AUTHORITY_PATH)"
#####################################
### Generate request if necessary ###
#####################################
if [ ! -f $REQUEST_PATH ]; then
REQUEST_TEMP=$(mktemp -u)
openssl req -new -sha256 -key $KEY_PATH -out $REQUEST_TEMP -subj "/CN=$COMMON_NAME"
mv $REQUEST_TEMP $REQUEST_PATH
fi
logger -t certidude -s "Request md5sum is $(md5sum -b $REQUEST_PATH)"
# Wait for certificate
if [ -d $GREEN_LED ]; then
echo 500 | tee $GREEN_LED/delay_*
fi
CERTIFICATE_TEMP=$(mktemp -u)
curl -f -L \
-H "Content-Type: application/pkcs10" \
--data-binary @$REQUEST_PATH \
$URL/api/request/?autosign=true\&wait=yes > $CERTIFICATE_TEMP
# TODO: Loop until we get exitcode 0
# TODO: Use backoff time $((2\*X))
if [ $? -ne 0 ]; then
echo "Failed to fetch certificate"
if [ -d $GREEN_LED ] && [ -d $RED_LED ]; then
echo none > $GREEN_LED/trigger
echo timer > $RED_LED/trigger
echo 500 | tee $RED_LED/delay_*
fi
exit 21
fi
# Verify certificate
openssl verify -CAfile $AUTHORITY_PATH $CERTIFICATE_TEMP
if [ $? -ne 0 ]; then
logger -t certidude -s "Received bogus certificate!"
if [ -d $GREEN_LED ] && [ -d $RED_LED ]; then
echo none > $GREEN_LED/trigger
echo timer > $RED_LED/trigger
echo 1000 | tee $RED_LED/delay_*
fi
exit 22
fi
logger -t certidude -s "Certificate md5sum: $(md5sum -b $CERTIFICATE_TEMP)"
uci commit
mv $CERTIFICATE_TEMP $CERTIFICATE_PATH
# Restart services
/etc/init.d/ipsec start
/etc/init.d/openvpn start