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

#!/bin/bash

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

# Set PATH to find our own executables
export PATH=/usr/local/sbin:/usr/local/bin:${PATH}

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

	wget -qO - "http://169.254.169.254/latest/${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 ))"
}

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

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

	# Store instance ID
	echo "${instance_id}" > /var/run/aws-instance-id

	# Initialise system settings
	local hostname=$(get meta-data/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

	# Create setup user
	if ! getent passwd setup &>/dev/null; then
		useradd setup -s /usr/bin/run-setup -g nobody -m

		# Unlock the account
		usermod -p "x" setup
	fi

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

		local key="$(get meta-data/public-keys/${key_no}/openssh-key)"
		if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then
			mkdir -p "/home/setup/.ssh"
			chmod 700 "/home/setup/.ssh"
			chown setup.nobody "/home/setup/.ssh"

			echo "${key}" >> "/home/setup/.ssh/authorized_keys"
			chmod 600 "/home/setup/.ssh/authorized_keys"
			chown setup.nobody "/home/setup/.ssh/authorized_keys"
		fi
	done

	# Download the user-data script only on the first boot
	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
		# Download user-data
		local user_data="$(get user-data)"

		# Save user-data script to be executed later
		if [ "${user_data:0:2}" = "#!" ]; then
			echo "${user_data}" > /tmp/aws-user-data.script
			chmod 700 /tmp/aws-user-data.script

			# Run the user-data script
			local now="$(date -u +"%s")"
			/tmp/aws-user-data.script &>/var/log/user-data.log.${now}

			# Delete the script right away
			rm /tmp/aws-user-data.script
		fi
	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
	# After this, no network connectivity will be available from this script due to the
	# renaming of the network interfaces for which they have to be shut down
	local config_type=1
	: > /var/ipfire/ethernet/settings

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

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

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

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

		# Get subnet size
		local subnet="$(get "meta-data/network/interfaces/macs/${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 $(get "meta-data/network/interfaces/macs/${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
	done

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


	# 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

		# Disable SSH password authentication
		sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings

		# 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

		# Mark SSH to start immediately (but not right now)
		touch /var/ipfire/remote/enablessh
		chown nobody:nobody /var/ipfire/remote/enablessh

		# 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}"

		# Setup DNS
		for domain_name_server in ${new_domain_name_servers}; do
			echo "nameserver ${domain_name_server}"
		done > /etc/resolv.conf

		# The system is online now
		touch /var/ipfire/red/active

		# Import AWS configuration
		import_aws_configuration
		;;

	EXPIRE|FAIL|RELEASE|STOP)
		# The system is no longer online
		rm -f /var/ipfire/red/active

		# Remove all IP addresses
		ip addr flush dev "${interface}"

		# Shut down the interface
		ip link set "${interface}" down
		;;

	*)
		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	. ${rc_functions}
	5
9ae73c30 MT	6	# Set PATH to find our own executables
	7	export PATH=/usr/local/sbin:/usr/local/bin:${PATH}
	8
bd3bcb45 MT	9	get() {
	10	local file="${1}"
	11
4e4c122c	12	wget -qO - "http://169.254.169.254/latest/${file}"
bd3bcb45 MT	13	}
	14
	15	to_address() {
	16	local n="${1}"
	17
	18	local o1=$(( (n & 0xff000000) >> 24 ))
	19	local o2=$(( (n & 0xff0000) >> 16 ))
	20	local o3=$(( (n & 0xff00) >> 8 ))
	21	local o4=$(( (n & 0xff) ))
	22
	23	printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}"
	24	}
	25
	26	to_integer() {
	27	local address="${1}"
	28
	29	local integer=0
	30
	31	local i
	32	for i in ${address//\./ }; do
	33	integer=$(( (integer << 8) + i ))
	34	done
	35
	36	printf "%d\n" "${integer}"
	37	}
	38
	39	prefix2netmask() {
	40	local prefix=${1}
	41
	42	local zeros=$(( 32 - prefix ))
	43	local netmask=0
	44
	45	local i
	46	for (( i=0; i<${zeros}; i++ )); do
	47	netmask=$(( (netmask << 1) ^ 1 ))
	48	done
	49
	50	to_address "$(( netmask ^ 0xffffffff ))"
	51	}
	52
	53	import_aws_configuration() {
4e4c122c	54	local instance_id="$(get meta-data/instance-id)"
bd3bcb45 MT	55
	56	boot_mesg "Importing AWS configuration for instance ${instance_id}..."
	57
eb7ccf87 MT	58	# Store instance ID
	59	echo "${instance_id}" > /var/run/aws-instance-id
	60
bd3bcb45	61	# Initialise system settings
4e4c122c	62	local hostname=$(get meta-data/local-hostname)
bd3bcb45	63
3273ff48 MT	64	# Set hostname
	65	if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
	66	echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings
	67	fi
	68
	69	# Set domainname
	70	if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then
	71	echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings
bd3bcb45 MT	72	fi
bd3bcb45 MT	73
1413006b MT	74	# Create setup user
1413006b MT	75	if ! getent passwd setup &>/dev/null; then
e2d9fe7e	76	useradd setup -s /usr/bin/run-setup -g nobody -m
87d7fc66 MT	77
	78	# Unlock the account
	79	usermod -p "x" setup
1413006b	80	fi
2e42a9ea	81
53eb4918 MT	82	# Import SSH keys for setup user
53eb4918 MT	83	local line
4e4c122c	84	for line in $(get "meta-data/public-keys/"); do
53eb4918 MT	85	local key_no="${line%=*}"
53eb4918 MT	86
4e4c122c	87	local key="$(get meta-data/public-keys/${key_no}/openssh-key)"
53eb4918 MT	88	if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then
	89	mkdir -p "/home/setup/.ssh"
	90	chmod 700 "/home/setup/.ssh"
6a7e6b44	91	chown setup.nobody "/home/setup/.ssh"
53eb4918 MT	92
	93	echo "${key}" >> "/home/setup/.ssh/authorized_keys"
	94	chmod 600 "/home/setup/.ssh/authorized_keys"
6a7e6b44	95	chown setup.nobody "/home/setup/.ssh/authorized_keys"
53eb4918	96	fi
2e42a9ea MT	97	done
2e42a9ea MT	98
8defa50e MT	99	# Download the user-data script only on the first boot
	100	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
	101	# Download user-data
	102	local user_data="$(get user-data)"
	103
	104	# Save user-data script to be executed later
	105	if [ "${user_data:0:2}" = "#!" ]; then
	106	echo "${user_data}" > /tmp/aws-user-data.script
	107	chmod 700 /tmp/aws-user-data.script
	108
	109	# Run the user-data script
93363446 MT	110	local now="$(date -u +"%s")"
93363446 MT	111	/tmp/aws-user-data.script &>/var/log/user-data.log.${now}
8defa50e MT	112
	113	# Delete the script right away
	114	rm /tmp/aws-user-data.script
	115	fi
	116	fi
4e4c122c	117
bd3bcb45 MT	118	# Import any DNS server settings
	119	eval $(/usr/local/bin/readhash <(grep -E "^DNS([0-9])=" /var/ipfire/ethernet/settings 2>/dev/null))
	120
	121	# Import network configuration
2e42a9ea MT	122	# After this, no network connectivity will be available from this script due to the
2e42a9ea MT	123	# renaming of the network interfaces for which they have to be shut down
0f224ad7 MT	124	local config_type=1
0f224ad7 MT	125	: > /var/ipfire/ethernet/settings
bd3bcb45	126
3273ff48	127	local mac
4e4c122c	128	for mac in $(get meta-data/network/interfaces/macs/); do
bd3bcb45 MT	129	# Remove trailing slash
	130	mac="${mac//\//}"
	131
4e4c122c MT	132	local device_number="$(get "meta-data/network/interfaces/macs/${mac}/device-number")"
4e4c122c MT	133	local interface_id="$(get "meta-data/network/interfaces/macs/${mac}/interface-id")"
bd3bcb45 MT	134
bd3bcb45 MT	135	# First IPv4 address
4e4c122c	136	local ipv4_address="$(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" \| head -n1)"
bd3bcb45 MT	137	local ipv4_address_num="$(to_integer "${ipv4_address}")"
bd3bcb45 MT	138
607240e2	139	# Get VPC subnet
4e4c122c	140	local vpc="$(get "meta-data/network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")"
607240e2 MT	141	local vpc_netaddress="${vpc%/*}"
	142	local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")"
	143
bd3bcb45	144	# Get subnet size
4e4c122c	145	local subnet="$(get "meta-data/network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")"
bd3bcb45 MT	146
	147	local prefix="${subnet#*/}"
	148	local netmask="$(prefix2netmask "${prefix}")"
	149	local netmask_num="$(to_integer "${netmask}")"
	150
	151	# Calculate the network and broadcast addresses
	152	local netaddress="${subnet%/*}"
	153	local netaddress_num="$(to_integer "${netaddress}")"
	154	local broadcast="$(to_address $(( ipv4_address_num \| (0xffffffff ^ netmask_num) )))"
	155
bd3bcb45 MT	156	case "${device_number}" in
	157	# RED
	158	0)
c7141f04 MT	159	local interface_name="red0"
c7141f04 MT	160
c86fd963 MT	161	# The gateway is always the first IP address in the subnet
	162	local gateway="$(to_address $(( netaddress_num + 1 )))"
	163
	164	# The AWS internal DNS service is available on the second IP address of the VPC
	165	local dns1="$(to_address $(( vpc_netaddress_num + 2 )))"
	166	local dns2=
	167
bd3bcb45 MT	168	(
bd3bcb45 MT	169	echo "RED_TYPE=STATIC"
c7141f04	170	echo "RED_DEV=${interface_name}"
bd3bcb45 MT	171	echo "RED_MACADDR=${mac}"
	172	echo "RED_DESCRIPTION='${interface_id}'"
	173	echo "RED_ADDRESS=${ipv4_address}"
	174	echo "RED_NETMASK=${netmask}"
	175	echo "RED_NETADDRESS=${netaddress}"
	176	echo "RED_BROADCAST=${broadcast}"
	177	echo "DEFAULT_GATEWAY=${gateway}"
	178	echo "DNS1=${DNS1:-${dns1}}"
	179	echo "DNS2=${DNS2:-${dns2}}"
	180	) >> /var/ipfire/ethernet/settings
	181
	182	# Import aliases for RED
4e4c122c	183	for alias in $(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" \| tail -n +2); do
bd3bcb45 MT	184	echo "${alias},on,"
	185	done > /var/ipfire/ethernet/aliases
	186	;;
	187
	188	# GREEN
	189	1)
c7141f04 MT	190	local interface_name="green0"
c7141f04 MT	191
bd3bcb45	192	(
c7141f04	193	echo "GREEN_DEV=${interface_name}"
bd3bcb45 MT	194	echo "GREEN_MACADDR=${mac}"
	195	echo "GREEN_DESCRIPTION='${interface_id}'"
	196	echo "GREEN_ADDRESS=${ipv4_address}"
	197	echo "GREEN_NETMASK=${netmask}"
	198	echo "GREEN_NETADDRESS=${netaddress}"
	199	echo "GREEN_BROADCAST=${broadcast}"
	200	) >> /var/ipfire/ethernet/settings
	201	;;
0f224ad7 MT	202
	203	# ORANGE
	204	2)
c7141f04	205	local interface_name="orange0"
0f224ad7 MT	206	config_type=2
	207
	208	(
c7141f04	209	echo "ORANGE_DEV=${interface_name}"
0f224ad7 MT	210	echo "ORANGE_MACADDR=${mac}"
	211	echo "ORANGE_DESCRIPTION='${interface_id}'"
	212	echo "ORANGE_ADDRESS=${ipv4_address}"
	213	echo "ORANGE_NETMASK=${netmask}"
	214	echo "ORANGE_NETADDRESS=${netaddress}"
	215	echo "ORANGE_BROADCAST=${broadcast}"
	216	) >> /var/ipfire/ethernet/settings
	217	;;
bd3bcb45 MT	218	esac
	219	done
	220
0f224ad7 MT	221	# Save CONFIG_TYPE
	222	echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings
	223
c5465a94 MT	224
c5465a94 MT	225
bd3bcb45 MT	226	# Actions performed only on the very first start
bd3bcb45 MT	227	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
7fa83c2f	228	# Enable SSH
8b59ef08 MT	229	sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings
8b59ef08 MT	230
0cf70cae MT	231	# Disable SSH password authentication
	232	sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings
	233
7fa83c2f MT	234	# Enable SSH key authentication
	235	sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings
	236
8f2c3b49 MT	237	# Apply SSH settings
	238	/usr/local/bin/sshctrl
	239
693208bf MT	240	# Mark SSH to start immediately (but not right now)
	241	touch /var/ipfire/remote/enablessh
	242	chown nobody:nobody /var/ipfire/remote/enablessh
	243
bd3bcb45 MT	244	# Firewall rules for SSH and WEBIF
	245	(
	246	echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	247	echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	248	) >> /var/ipfire/firewall/input
	249
	250	# This script has now completed the first steps of setup
	251	touch /var/ipfire/main/firstsetup_ok
	252	fi
	253
	254	# All done
	255	echo_ok
	256	}
	257
	258	case "${reason}" in
	259	PREINIT)
	260	# Bring up the interface
	261	ip link set "${interface}" up
	262	;;
	263
	264	BOUND\|RENEW\|REBIND\|REBOOT)
	265	# Remove any previous IP addresses
	266	ip addr flush dev "${interface}"
	267
	268	# Add (or re-add) the new IP address
	269	ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"
	270
	271	# Add the default route
	272	ip route add default via "${new_routers}"
	273
647ca912 MT	274	# Setup DNS
	275	for domain_name_server in ${new_domain_name_servers}; do
	276	echo "nameserver ${domain_name_server}"
	277	done > /etc/resolv.conf
	278
	279	# The system is online now
	280	touch /var/ipfire/red/active
	281
bd3bcb45 MT	282	# Import AWS configuration
	283	import_aws_configuration
	284	;;
	285
	286	EXPIRE\|FAIL\|RELEASE\|STOP)
647ca912 MT	287	# The system is no longer online
	288	rm -f /var/ipfire/red/active
	289
bd3bcb45 MT	290	# Remove all IP addresses
bd3bcb45 MT	291	ip addr flush dev "${interface}"
c5465a94 MT	292
	293	# Shut down the interface
	294	ip link set "${interface}" down
bd3bcb45 MT	295	;;
	296
	297	*)
	298	echo "Unhandled reason: ${reason}" >&2
	299	exit 2
	300	;;
	301	esac
	302
	303	# Terminate
	304	exit 0