[ipfire-2.x.git] / src / initscripts / helper / aws-setup

#!/bin/bash

. /etc/sysconfig/rc
. ${rc_functions}

get() {
	local file="${1}"

	wget -qO - "http://169.254.169.254/latest/meta-data/${file}"
}

to_address() {
	local n="${1}"

	local o1=$(( (n & 0xff000000) >> 24 ))
	local o2=$(( (n & 0xff0000) >> 16 ))
	local o3=$(( (n & 0xff00) >> 8 ))
	local o4=$(( (n & 0xff) ))

	printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}"
}

to_integer() {
	local address="${1}"

	local integer=0

	local i
	for i in ${address//\./ }; do
		integer=$(( (integer << 8) + i ))
	done

	printf "%d\n" "${integer}"
}

prefix2netmask() {
	local prefix=${1}

	local zeros=$(( 32 - prefix ))
	local netmask=0

	local i
	for (( i=0; i<${zeros}; i++ )); do
		netmask=$(( (netmask << 1) ^ 1 ))
	done

	to_address "$(( netmask ^ 0xffffffff ))"
}

find_interface() {
	local mac="${1}"

	local path
	for path in /sys/class/net/*; do
		local address="$(<${path}/address)"

		if [ "${mac}" = "${address}" ]; then
			basename "${path}"
			return 0
		fi
	done

	return 1
}

import_aws_configuration() {
	local instance_id="$(get instance-id)"

	boot_mesg "Importing AWS configuration for instance ${instance_id}..."

	# Initialise system settings
	local hostname=$(get local-hostname)

	# Set hostname
	if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
		echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings
	fi

	# Set domainname
	if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then
		echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings
	fi

	# Import any DNS server settings
	eval $(/usr/local/bin/readhash <(grep -E "^DNS([0-9])=" /var/ipfire/ethernet/settings 2>/dev/null))

	# Import network configuration
	local config_type=1
	: > /var/ipfire/ethernet/settings

	local mac
	for mac in $(get network/interfaces/macs/); do
		# Remove trailing slash
		mac="${mac//\//}"

		local device_number="$(get "network/interfaces/macs/${mac}/device-number")"
		local interface_id="$(get "network/interfaces/macs/${mac}/interface-id")"

		# First IPv4 address
		local ipv4_address="$(get "network/interfaces/macs/${mac}/local-ipv4s" | head -n1)"
		local ipv4_address_num="$(to_integer "${ipv4_address}")"

		# Get VPC subnet
		local vpc="$(get "network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")"
		local vpc_netaddress="${vpc%/*}"
		local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")"

		# Get subnet size
		local subnet="$(get "network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")"

		local prefix="${subnet#*/}"
		local netmask="$(prefix2netmask "${prefix}")"
		local netmask_num="$(to_integer "${netmask}")"

		# Calculate the network and broadcast addresses
		local netaddress="${subnet%/*}"
		local netaddress_num="$(to_integer "${netaddress}")"
		local broadcast="$(to_address $(( ipv4_address_num | (0xffffffff ^ netmask_num) )))"

		case "${device_number}" in
			# RED
			0)
				local interface_name="red0"

				# The gateway is always the first IP address in the subnet
				local gateway="$(to_address $(( netaddress_num + 1 )))"

				# The AWS internal DNS service is available on the second IP address of the VPC
				local dns1="$(to_address $(( vpc_netaddress_num + 2 )))"
				local dns2=

				(
					echo "RED_TYPE=STATIC"
					echo "RED_DEV=${interface_name}"
					echo "RED_MACADDR=${mac}"
					echo "RED_DESCRIPTION='${interface_id}'"
					echo "RED_ADDRESS=${ipv4_address}"
					echo "RED_NETMASK=${netmask}"
					echo "RED_NETADDRESS=${netaddress}"
					echo "RED_BROADCAST=${broadcast}"
					echo "DEFAULT_GATEWAY=${gateway}"
					echo "DNS1=${DNS1:-${dns1}}"
					echo "DNS2=${DNS2:-${dns2}}"
				) >> /var/ipfire/ethernet/settings

				# Import aliases for RED
				for alias in $(get "network/interfaces/macs/${mac}/local-ipv4s" | tail -n +2); do
					echo "${alias},on,"
				done > /var/ipfire/ethernet/aliases
				;;

			# GREEN
			1)
				local interface_name="green0"

				(
					echo "GREEN_DEV=${interface_name}"
					echo "GREEN_MACADDR=${mac}"
					echo "GREEN_DESCRIPTION='${interface_id}'"
					echo "GREEN_ADDRESS=${ipv4_address}"
					echo "GREEN_NETMASK=${netmask}"
					echo "GREEN_NETADDRESS=${netaddress}"
					echo "GREEN_BROADCAST=${broadcast}"
				) >> /var/ipfire/ethernet/settings
				;;

			# ORANGE
			2)
				local interface_name="orange0"
				config_type=2

				(
					echo "ORANGE_DEV=${interface_name}"
					echo "ORANGE_MACADDR=${mac}"
					echo "ORANGE_DESCRIPTION='${interface_id}'"
					echo "ORANGE_ADDRESS=${ipv4_address}"
					echo "ORANGE_NETMASK=${netmask}"
					echo "ORANGE_NETADDRESS=${netaddress}"
					echo "ORANGE_BROADCAST=${broadcast}"
				) >> /var/ipfire/ethernet/settings
				;;
		esac

		# Rename interface
		local interface="$(find_interface "${mac}")"

		if [ -n "${interface}" ] && [ -n "${interface_name}" ]; then
			ip link set "${interface}" down
			ip link set "${interface}" name "${interface_name}"
		fi
	done

	# Save CONFIG_TYPE
	echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings

	# Import SSH keys
	local line
	for line in $(get "public-keys/"); do
		local key_no="${line%=*}"

		local key="$(get public-keys/${key_no}/openssh-key)"
		if [ -n "${key}" ] && ! grep -q "^${key}$" /root/.ssh/authorized_keys 2>/dev/null; then
			mkdir -p /root/.ssh
			chmod 700 /root/.ssh

			echo "${key}" >> /root/.ssh/authorized_keys
			chmod 600 /root/.ssh/authorized_keys
		fi
	done

	# Actions performed only on the very first start
	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
		# Enable SSH
		sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings

		touch /var/ipfire/remote/enablessh
		chown nobody:nobody /var/ipfire/remote/enablessh

		# Enable SSH key authentication
		sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings

		# Apply SSH settings
		/usr/local/bin/sshctrl

		# Firewall rules for SSH and WEBIF
		(
			echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
			echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
		) >> /var/ipfire/firewall/input

		# This script has now completed the first steps of setup
		touch /var/ipfire/main/firstsetup_ok
	fi

	# All done
	echo_ok
}

case "${reason}" in
	PREINIT)
		# Bring up the interface
		ip link set "${interface}" up
		;;

	BOUND|RENEW|REBIND|REBOOT)
		# Remove any previous IP addresses
		ip addr flush dev "${interface}"

		# Add (or re-add) the new IP address
		ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"

		# Add the default route
		ip route add default via "${new_routers}"

		# Import AWS configuration
		import_aws_configuration
		;;

	EXPIRE|FAIL|RELEASE|STOP)
		# Remove all IP addresses
		ip addr flush dev "${interface}"
		;;

	*)
		echo "Unhandled reason: ${reason}" >&2
		exit 2
		;;
esac

# Terminate
exit 0
Commit	Line	Data
bd3bcb45 MT	1	#!/bin/bash
	2
	3	. /etc/sysconfig/rc
	4	. ${rc_functions}
	5
	6	get() {
	7	local file="${1}"
	8
	9	wget -qO - "http://169.254.169.254/latest/meta-data/${file}"
	10	}
	11
	12	to_address() {
	13	local n="${1}"
	14
	15	local o1=$(( (n & 0xff000000) >> 24 ))
	16	local o2=$(( (n & 0xff0000) >> 16 ))
	17	local o3=$(( (n & 0xff00) >> 8 ))
	18	local o4=$(( (n & 0xff) ))
	19
	20	printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}"
	21	}
	22
	23	to_integer() {
	24	local address="${1}"
	25
	26	local integer=0
	27
	28	local i
	29	for i in ${address//\./ }; do
	30	integer=$(( (integer << 8) + i ))
	31	done
	32
	33	printf "%d\n" "${integer}"
	34	}
	35
	36	prefix2netmask() {
	37	local prefix=${1}
	38
	39	local zeros=$(( 32 - prefix ))
	40	local netmask=0
	41
	42	local i
	43	for (( i=0; i<${zeros}; i++ )); do
	44	netmask=$(( (netmask << 1) ^ 1 ))
	45	done
	46
	47	to_address "$(( netmask ^ 0xffffffff ))"
	48	}
	49
c7141f04 MT	50	find_interface() {
	51	local mac="${1}"
	52
	53	local path
	54	for path in /sys/class/net/*; do
	55	local address="$(<${path}/address)"
	56
	57	if [ "${mac}" = "${address}" ]; then
	58	basename "${path}"
	59	return 0
	60	fi
	61	done
	62
	63	return 1
	64	}
	65
bd3bcb45 MT	66	import_aws_configuration() {
	67	local instance_id="$(get instance-id)"
	68
	69	boot_mesg "Importing AWS configuration for instance ${instance_id}..."
	70
	71	# Initialise system settings
3273ff48	72	local hostname=$(get local-hostname)
bd3bcb45	73
3273ff48 MT	74	# Set hostname
	75	if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
	76	echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings
	77	fi
	78
	79	# Set domainname
	80	if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then
	81	echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings
bd3bcb45 MT	82	fi
	83
	84	# Import any DNS server settings
	85	eval $(/usr/local/bin/readhash <(grep -E "^DNS([0-9])=" /var/ipfire/ethernet/settings 2>/dev/null))
	86
	87	# Import network configuration
0f224ad7 MT	88	local config_type=1
0f224ad7 MT	89	: > /var/ipfire/ethernet/settings
bd3bcb45	90
3273ff48	91	local mac
bd3bcb45 MT	92	for mac in $(get network/interfaces/macs/); do
	93	# Remove trailing slash
	94	mac="${mac//\//}"
	95
	96	local device_number="$(get "network/interfaces/macs/${mac}/device-number")"
	97	local interface_id="$(get "network/interfaces/macs/${mac}/interface-id")"
	98
	99	# First IPv4 address
	100	local ipv4_address="$(get "network/interfaces/macs/${mac}/local-ipv4s" \| head -n1)"
	101	local ipv4_address_num="$(to_integer "${ipv4_address}")"
	102
607240e2 MT	103	# Get VPC subnet
	104	local vpc="$(get "network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")"
	105	local vpc_netaddress="${vpc%/*}"
	106	local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")"
	107
bd3bcb45 MT	108	# Get subnet size
	109	local subnet="$(get "network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")"
	110
	111	local prefix="${subnet#*/}"
	112	local netmask="$(prefix2netmask "${prefix}")"
	113	local netmask_num="$(to_integer "${netmask}")"
	114
	115	# Calculate the network and broadcast addresses
	116	local netaddress="${subnet%/*}"
	117	local netaddress_num="$(to_integer "${netaddress}")"
	118	local broadcast="$(to_address $(( ipv4_address_num \| (0xffffffff ^ netmask_num) )))"
	119
bd3bcb45 MT	120	case "${device_number}" in
	121	# RED
	122	0)
c7141f04 MT	123	local interface_name="red0"
c7141f04 MT	124
c86fd963 MT	125	# The gateway is always the first IP address in the subnet
	126	local gateway="$(to_address $(( netaddress_num + 1 )))"
	127
	128	# The AWS internal DNS service is available on the second IP address of the VPC
	129	local dns1="$(to_address $(( vpc_netaddress_num + 2 )))"
	130	local dns2=
	131
bd3bcb45 MT	132	(
bd3bcb45 MT	133	echo "RED_TYPE=STATIC"
c7141f04	134	echo "RED_DEV=${interface_name}"
bd3bcb45 MT	135	echo "RED_MACADDR=${mac}"
	136	echo "RED_DESCRIPTION='${interface_id}'"
	137	echo "RED_ADDRESS=${ipv4_address}"
	138	echo "RED_NETMASK=${netmask}"
	139	echo "RED_NETADDRESS=${netaddress}"
	140	echo "RED_BROADCAST=${broadcast}"
	141	echo "DEFAULT_GATEWAY=${gateway}"
	142	echo "DNS1=${DNS1:-${dns1}}"
	143	echo "DNS2=${DNS2:-${dns2}}"
	144	) >> /var/ipfire/ethernet/settings
	145
	146	# Import aliases for RED
	147	for alias in $(get "network/interfaces/macs/${mac}/local-ipv4s" \| tail -n +2); do
	148	echo "${alias},on,"
	149	done > /var/ipfire/ethernet/aliases
	150	;;
	151
	152	# GREEN
	153	1)
c7141f04 MT	154	local interface_name="green0"
c7141f04 MT	155
bd3bcb45	156	(
c7141f04	157	echo "GREEN_DEV=${interface_name}"
bd3bcb45 MT	158	echo "GREEN_MACADDR=${mac}"
	159	echo "GREEN_DESCRIPTION='${interface_id}'"
	160	echo "GREEN_ADDRESS=${ipv4_address}"
	161	echo "GREEN_NETMASK=${netmask}"
	162	echo "GREEN_NETADDRESS=${netaddress}"
	163	echo "GREEN_BROADCAST=${broadcast}"
	164	) >> /var/ipfire/ethernet/settings
	165	;;
0f224ad7 MT	166
	167	# ORANGE
	168	2)
c7141f04	169	local interface_name="orange0"
0f224ad7 MT	170	config_type=2
	171
	172	(
c7141f04	173	echo "ORANGE_DEV=${interface_name}"
0f224ad7 MT	174	echo "ORANGE_MACADDR=${mac}"
	175	echo "ORANGE_DESCRIPTION='${interface_id}'"
	176	echo "ORANGE_ADDRESS=${ipv4_address}"
	177	echo "ORANGE_NETMASK=${netmask}"
	178	echo "ORANGE_NETADDRESS=${netaddress}"
	179	echo "ORANGE_BROADCAST=${broadcast}"
	180	) >> /var/ipfire/ethernet/settings
	181	;;
bd3bcb45	182	esac
c7141f04 MT	183
	184	# Rename interface
	185	local interface="$(find_interface "${mac}")"
	186
	187	if [ -n "${interface}" ] && [ -n "${interface_name}" ]; then
	188	ip link set "${interface}" down
	189	ip link set "${interface}" name "${interface_name}"
	190	fi
bd3bcb45 MT	191	done
bd3bcb45 MT	192
0f224ad7 MT	193	# Save CONFIG_TYPE
	194	echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings
	195
bd3bcb45 MT	196	# Import SSH keys
	197	local line
	198	for line in $(get "public-keys/"); do
	199	local key_no="${line%=*}"
	200
	201	local key="$(get public-keys/${key_no}/openssh-key)"
	202	if [ -n "${key}" ] && ! grep -q "^${key}$" /root/.ssh/authorized_keys 2>/dev/null; then
	203	mkdir -p /root/.ssh
	204	chmod 700 /root/.ssh
	205
	206	echo "${key}" >> /root/.ssh/authorized_keys
	207	chmod 600 /root/.ssh/authorized_keys
	208	fi
	209	done
	210
bd3bcb45 MT	211	# Actions performed only on the very first start
bd3bcb45 MT	212	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
7fa83c2f	213	# Enable SSH
8b59ef08 MT	214	sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings
8b59ef08 MT	215
7fa83c2f MT	216	touch /var/ipfire/remote/enablessh
	217	chown nobody:nobody /var/ipfire/remote/enablessh
	218
	219	# Enable SSH key authentication
	220	sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings
	221
8f2c3b49 MT	222	# Apply SSH settings
	223	/usr/local/bin/sshctrl
	224
bd3bcb45 MT	225	# Firewall rules for SSH and WEBIF
	226	(
	227	echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	228	echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	229	) >> /var/ipfire/firewall/input
	230
	231	# This script has now completed the first steps of setup
	232	touch /var/ipfire/main/firstsetup_ok
	233	fi
	234
	235	# All done
	236	echo_ok
	237	}
	238
	239	case "${reason}" in
	240	PREINIT)
	241	# Bring up the interface
	242	ip link set "${interface}" up
	243	;;
	244
	245	BOUND\|RENEW\|REBIND\|REBOOT)
	246	# Remove any previous IP addresses
	247	ip addr flush dev "${interface}"
	248
	249	# Add (or re-add) the new IP address
	250	ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"
	251
	252	# Add the default route
	253	ip route add default via "${new_routers}"
	254
	255	# Import AWS configuration
	256	import_aws_configuration
	257	;;
	258
	259	EXPIRE\|FAIL\|RELEASE\|STOP)
	260	# Remove all IP addresses
	261	ip addr flush dev "${interface}"
	262	;;
	263
	264	*)
	265	echo "Unhandled reason: ${reason}" >&2
	266	exit 2
	267	;;
	268	esac
	269
	270	# Terminate
	271	exit 0