[people/pmueller/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 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 )))"

				(
					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}"
				) >> /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
		# Disable using ISP nameservers
		sed -e "s/^USE_ISP_NAMESERVERS=.*/USE_ISP_NAMESERVERS=off/" -i /var/ipfire/dns/settings

		# 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	118	# Import network configuration
2e42a9ea MT	119	# After this, no network connectivity will be available from this script due to the
2e42a9ea MT	120	# renaming of the network interfaces for which they have to be shut down
0f224ad7 MT	121	local config_type=1
0f224ad7 MT	122	: > /var/ipfire/ethernet/settings
bd3bcb45	123
3273ff48	124	local mac
4e4c122c	125	for mac in $(get meta-data/network/interfaces/macs/); do
bd3bcb45 MT	126	# Remove trailing slash
	127	mac="${mac//\//}"
	128
4e4c122c MT	129	local device_number="$(get "meta-data/network/interfaces/macs/${mac}/device-number")"
4e4c122c MT	130	local interface_id="$(get "meta-data/network/interfaces/macs/${mac}/interface-id")"
bd3bcb45 MT	131
bd3bcb45 MT	132	# First IPv4 address
4e4c122c	133	local ipv4_address="$(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" \| head -n1)"
bd3bcb45 MT	134	local ipv4_address_num="$(to_integer "${ipv4_address}")"
bd3bcb45 MT	135
607240e2	136	# Get VPC subnet
4e4c122c	137	local vpc="$(get "meta-data/network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")"
607240e2 MT	138	local vpc_netaddress="${vpc%/*}"
	139	local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")"
	140
bd3bcb45	141	# Get subnet size
4e4c122c	142	local subnet="$(get "meta-data/network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")"
bd3bcb45 MT	143
	144	local prefix="${subnet#*/}"
	145	local netmask="$(prefix2netmask "${prefix}")"
	146	local netmask_num="$(to_integer "${netmask}")"
	147
	148	# Calculate the network and broadcast addresses
	149	local netaddress="${subnet%/*}"
	150	local netaddress_num="$(to_integer "${netaddress}")"
	151	local broadcast="$(to_address $(( ipv4_address_num \| (0xffffffff ^ netmask_num) )))"
	152
bd3bcb45 MT	153	case "${device_number}" in
	154	# RED
	155	0)
c7141f04 MT	156	local interface_name="red0"
c7141f04 MT	157
c86fd963 MT	158	# The gateway is always the first IP address in the subnet
	159	local gateway="$(to_address $(( netaddress_num + 1 )))"
	160
bd3bcb45 MT	161	(
bd3bcb45 MT	162	echo "RED_TYPE=STATIC"
c7141f04	163	echo "RED_DEV=${interface_name}"
bd3bcb45 MT	164	echo "RED_MACADDR=${mac}"
	165	echo "RED_DESCRIPTION='${interface_id}'"
	166	echo "RED_ADDRESS=${ipv4_address}"
	167	echo "RED_NETMASK=${netmask}"
	168	echo "RED_NETADDRESS=${netaddress}"
	169	echo "RED_BROADCAST=${broadcast}"
	170	echo "DEFAULT_GATEWAY=${gateway}"
bd3bcb45 MT	171	) >> /var/ipfire/ethernet/settings
	172
	173	# Import aliases for RED
4e4c122c	174	for alias in $(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" \| tail -n +2); do
bd3bcb45 MT	175	echo "${alias},on,"
	176	done > /var/ipfire/ethernet/aliases
	177	;;
	178
	179	# GREEN
	180	1)
c7141f04 MT	181	local interface_name="green0"
c7141f04 MT	182
bd3bcb45	183	(
c7141f04	184	echo "GREEN_DEV=${interface_name}"
bd3bcb45 MT	185	echo "GREEN_MACADDR=${mac}"
	186	echo "GREEN_DESCRIPTION='${interface_id}'"
	187	echo "GREEN_ADDRESS=${ipv4_address}"
	188	echo "GREEN_NETMASK=${netmask}"
	189	echo "GREEN_NETADDRESS=${netaddress}"
	190	echo "GREEN_BROADCAST=${broadcast}"
	191	) >> /var/ipfire/ethernet/settings
	192	;;
0f224ad7 MT	193
	194	# ORANGE
	195	2)
c7141f04	196	local interface_name="orange0"
0f224ad7 MT	197	config_type=2
	198
	199	(
c7141f04	200	echo "ORANGE_DEV=${interface_name}"
0f224ad7 MT	201	echo "ORANGE_MACADDR=${mac}"
	202	echo "ORANGE_DESCRIPTION='${interface_id}'"
	203	echo "ORANGE_ADDRESS=${ipv4_address}"
	204	echo "ORANGE_NETMASK=${netmask}"
	205	echo "ORANGE_NETADDRESS=${netaddress}"
	206	echo "ORANGE_BROADCAST=${broadcast}"
	207	) >> /var/ipfire/ethernet/settings
	208	;;
bd3bcb45 MT	209	esac
	210	done
	211
0f224ad7 MT	212	# Save CONFIG_TYPE
	213	echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings
	214
bd3bcb45 MT	215	# Actions performed only on the very first start
bd3bcb45 MT	216	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
88cb5eb1 MT	217	# Disable using ISP nameservers
	218	sed -e "s/^USE_ISP_NAMESERVERS=.*/USE_ISP_NAMESERVERS=off/" -i /var/ipfire/dns/settings
	219
7fa83c2f	220	# Enable SSH
8b59ef08 MT	221	sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings
8b59ef08 MT	222
0cf70cae MT	223	# Disable SSH password authentication
	224	sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings
	225
7fa83c2f MT	226	# Enable SSH key authentication
	227	sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings
	228
8f2c3b49 MT	229	# Apply SSH settings
	230	/usr/local/bin/sshctrl
	231
693208bf MT	232	# Mark SSH to start immediately (but not right now)
	233	touch /var/ipfire/remote/enablessh
	234	chown nobody:nobody /var/ipfire/remote/enablessh
	235
bd3bcb45 MT	236	# Firewall rules for SSH and WEBIF
	237	(
	238	echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	239	echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	240	) >> /var/ipfire/firewall/input
	241
	242	# This script has now completed the first steps of setup
	243	touch /var/ipfire/main/firstsetup_ok
	244	fi
	245
	246	# All done
	247	echo_ok
	248	}
	249
	250	case "${reason}" in
	251	PREINIT)
	252	# Bring up the interface
	253	ip link set "${interface}" up
	254	;;
	255
	256	BOUND\|RENEW\|REBIND\|REBOOT)
	257	# Remove any previous IP addresses
	258	ip addr flush dev "${interface}"
	259
	260	# Add (or re-add) the new IP address
	261	ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"
	262
	263	# Add the default route
	264	ip route add default via "${new_routers}"
	265
647ca912 MT	266	# Setup DNS
	267	for domain_name_server in ${new_domain_name_servers}; do
	268	echo "nameserver ${domain_name_server}"
	269	done > /etc/resolv.conf
	270
	271	# The system is online now
	272	touch /var/ipfire/red/active
	273
bd3bcb45 MT	274	# Import AWS configuration
	275	import_aws_configuration
	276	;;
	277
	278	EXPIRE\|FAIL\|RELEASE\|STOP)
647ca912 MT	279	# The system is no longer online
	280	rm -f /var/ipfire/red/active
	281
bd3bcb45 MT	282	# Remove all IP addresses
bd3bcb45 MT	283	ip addr flush dev "${interface}"
c5465a94 MT	284
	285	# Shut down the interface
	286	ip link set "${interface}" down
bd3bcb45 MT	287	;;
	288
	289	*)
	290	echo "Unhandled reason: ${reason}" >&2
	291	exit 2
	292	;;
	293	esac
	294
	295	# Terminate
	296	exit 0