[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}

# AWS supports an MTU of up to 9001 bytes
DEFAULT_MTU=9001

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=${broadcast}"
					echo "RED_MTU=1500"
					echo "DEFAULT_GATEWAY=${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=${broadcast}"
					echo "GREEN_MTU=${DEFAULT_MTU}"
				) >> /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=${broadcast}"
					echo "ORANGE_MTU=${DEFAULT_MTU}"
				) >> /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
68e060cb MT	9	# AWS supports an MTU of up to 9001 bytes
	10	DEFAULT_MTU=9001
	11
bd3bcb45 MT	12	get() {
	13	local file="${1}"
	14
4e4c122c	15	wget -qO - "http://169.254.169.254/latest/${file}"
bd3bcb45 MT	16	}
	17
	18	to_address() {
	19	local n="${1}"
	20
	21	local o1=$(( (n & 0xff000000) >> 24 ))
	22	local o2=$(( (n & 0xff0000) >> 16 ))
	23	local o3=$(( (n & 0xff00) >> 8 ))
	24	local o4=$(( (n & 0xff) ))
	25
	26	printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}"
	27	}
	28
	29	to_integer() {
	30	local address="${1}"
	31
	32	local integer=0
	33
	34	local i
	35	for i in ${address//\./ }; do
	36	integer=$(( (integer << 8) + i ))
	37	done
	38
	39	printf "%d\n" "${integer}"
	40	}
	41
	42	prefix2netmask() {
	43	local prefix=${1}
	44
	45	local zeros=$(( 32 - prefix ))
	46	local netmask=0
	47
	48	local i
	49	for (( i=0; i<${zeros}; i++ )); do
	50	netmask=$(( (netmask << 1) ^ 1 ))
	51	done
	52
	53	to_address "$(( netmask ^ 0xffffffff ))"
	54	}
	55
	56	import_aws_configuration() {
4e4c122c	57	local instance_id="$(get meta-data/instance-id)"
bd3bcb45 MT	58
	59	boot_mesg "Importing AWS configuration for instance ${instance_id}..."
	60
eb7ccf87 MT	61	# Store instance ID
	62	echo "${instance_id}" > /var/run/aws-instance-id
	63
bd3bcb45	64	# Initialise system settings
4e4c122c	65	local hostname=$(get meta-data/local-hostname)
bd3bcb45	66
3273ff48 MT	67	# Set hostname
	68	if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
	69	echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings
	70	fi
	71
	72	# Set domainname
	73	if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then
	74	echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings
bd3bcb45 MT	75	fi
bd3bcb45 MT	76
1413006b MT	77	# Create setup user
1413006b MT	78	if ! getent passwd setup &>/dev/null; then
e2d9fe7e	79	useradd setup -s /usr/bin/run-setup -g nobody -m
87d7fc66 MT	80
	81	# Unlock the account
	82	usermod -p "x" setup
1413006b	83	fi
2e42a9ea	84
53eb4918 MT	85	# Import SSH keys for setup user
53eb4918 MT	86	local line
4e4c122c	87	for line in $(get "meta-data/public-keys/"); do
53eb4918 MT	88	local key_no="${line%=*}"
53eb4918 MT	89
4e4c122c	90	local key="$(get meta-data/public-keys/${key_no}/openssh-key)"
53eb4918 MT	91	if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then
	92	mkdir -p "/home/setup/.ssh"
	93	chmod 700 "/home/setup/.ssh"
6a7e6b44	94	chown setup.nobody "/home/setup/.ssh"
53eb4918 MT	95
	96	echo "${key}" >> "/home/setup/.ssh/authorized_keys"
	97	chmod 600 "/home/setup/.ssh/authorized_keys"
6a7e6b44	98	chown setup.nobody "/home/setup/.ssh/authorized_keys"
53eb4918	99	fi
2e42a9ea MT	100	done
2e42a9ea MT	101
8defa50e MT	102	# Download the user-data script only on the first boot
	103	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
	104	# Download user-data
	105	local user_data="$(get user-data)"
	106
	107	# Save user-data script to be executed later
	108	if [ "${user_data:0:2}" = "#!" ]; then
	109	echo "${user_data}" > /tmp/aws-user-data.script
	110	chmod 700 /tmp/aws-user-data.script
	111
	112	# Run the user-data script
93363446 MT	113	local now="$(date -u +"%s")"
93363446 MT	114	/tmp/aws-user-data.script &>/var/log/user-data.log.${now}
8defa50e MT	115
	116	# Delete the script right away
	117	rm /tmp/aws-user-data.script
	118	fi
	119	fi
4e4c122c	120
bd3bcb45	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 $(( netaddress_num + 1 )))"
	163
bd3bcb45 MT	164	(
bd3bcb45 MT	165	echo "RED_TYPE=STATIC"
c7141f04	166	echo "RED_DEV=${interface_name}"
bd3bcb45 MT	167	echo "RED_MACADDR=${mac}"
	168	echo "RED_DESCRIPTION='${interface_id}'"
	169	echo "RED_ADDRESS=${ipv4_address}"
	170	echo "RED_NETMASK=${netmask}"
	171	echo "RED_NETADDRESS=${netaddress}"
	172	echo "RED_BROADCAST=${broadcast}"
68e060cb	173	echo "RED_MTU=1500"
bd3bcb45	174	echo "DEFAULT_GATEWAY=${gateway}"
bd3bcb45 MT	175	) >> /var/ipfire/ethernet/settings
	176
	177	# Import aliases for RED
4e4c122c	178	for alias in $(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" \| tail -n +2); do
bd3bcb45 MT	179	echo "${alias},on,"
	180	done > /var/ipfire/ethernet/aliases
	181	;;
	182
	183	# GREEN
	184	1)
c7141f04 MT	185	local interface_name="green0"
c7141f04 MT	186
bd3bcb45	187	(
c7141f04	188	echo "GREEN_DEV=${interface_name}"
bd3bcb45 MT	189	echo "GREEN_MACADDR=${mac}"
	190	echo "GREEN_DESCRIPTION='${interface_id}'"
	191	echo "GREEN_ADDRESS=${ipv4_address}"
	192	echo "GREEN_NETMASK=${netmask}"
	193	echo "GREEN_NETADDRESS=${netaddress}"
	194	echo "GREEN_BROADCAST=${broadcast}"
68e060cb	195	echo "GREEN_MTU=${DEFAULT_MTU}"
bd3bcb45 MT	196	) >> /var/ipfire/ethernet/settings
bd3bcb45 MT	197	;;
0f224ad7 MT	198
	199	# ORANGE
	200	2)
c7141f04	201	local interface_name="orange0"
0f224ad7 MT	202	config_type=2
	203
	204	(
c7141f04	205	echo "ORANGE_DEV=${interface_name}"
0f224ad7 MT	206	echo "ORANGE_MACADDR=${mac}"
	207	echo "ORANGE_DESCRIPTION='${interface_id}'"
	208	echo "ORANGE_ADDRESS=${ipv4_address}"
	209	echo "ORANGE_NETMASK=${netmask}"
	210	echo "ORANGE_NETADDRESS=${netaddress}"
	211	echo "ORANGE_BROADCAST=${broadcast}"
68e060cb	212	echo "ORANGE_MTU=${DEFAULT_MTU}"
0f224ad7 MT	213	) >> /var/ipfire/ethernet/settings
0f224ad7 MT	214	;;
bd3bcb45 MT	215	esac
	216	done
	217
0f224ad7 MT	218	# Save CONFIG_TYPE
	219	echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings
	220
bd3bcb45 MT	221	# Actions performed only on the very first start
bd3bcb45 MT	222	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
88cb5eb1 MT	223	# Disable using ISP nameservers
	224	sed -e "s/^USE_ISP_NAMESERVERS=.*/USE_ISP_NAMESERVERS=off/" -i /var/ipfire/dns/settings
	225
7fa83c2f	226	# Enable SSH
8b59ef08 MT	227	sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings
8b59ef08 MT	228
0cf70cae MT	229	# Disable SSH password authentication
	230	sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings
	231
7fa83c2f MT	232	# Enable SSH key authentication
	233	sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings
	234
8f2c3b49 MT	235	# Apply SSH settings
	236	/usr/local/bin/sshctrl
	237
693208bf MT	238	# Mark SSH to start immediately (but not right now)
	239	touch /var/ipfire/remote/enablessh
	240	chown nobody:nobody /var/ipfire/remote/enablessh
	241
bd3bcb45 MT	242	# Firewall rules for SSH and WEBIF
	243	(
	244	echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	245	echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
	246	) >> /var/ipfire/firewall/input
	247
	248	# This script has now completed the first steps of setup
	249	touch /var/ipfire/main/firstsetup_ok
	250	fi
	251
	252	# All done
	253	echo_ok
	254	}
	255
	256	case "${reason}" in
	257	PREINIT)
	258	# Bring up the interface
	259	ip link set "${interface}" up
	260	;;
	261
	262	BOUND\|RENEW\|REBIND\|REBOOT)
	263	# Remove any previous IP addresses
	264	ip addr flush dev "${interface}"
	265
	266	# Add (or re-add) the new IP address
	267	ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"
	268
	269	# Add the default route
	270	ip route add default via "${new_routers}"
	271
647ca912 MT	272	# Setup DNS
	273	for domain_name_server in ${new_domain_name_servers}; do
	274	echo "nameserver ${domain_name_server}"
	275	done > /etc/resolv.conf
	276
	277	# The system is online now
	278	touch /var/ipfire/red/active
	279
bd3bcb45 MT	280	# Import AWS configuration
	281	import_aws_configuration
	282	;;
	283
	284	EXPIRE\|FAIL\|RELEASE\|STOP)
647ca912 MT	285	# The system is no longer online
	286	rm -f /var/ipfire/red/active
	287
bd3bcb45 MT	288	# Remove all IP addresses
bd3bcb45 MT	289	ip addr flush dev "${interface}"
c5465a94 MT	290
	291	# Shut down the interface
	292	ip link set "${interface}" down
bd3bcb45 MT	293	;;
	294
	295	*)
	296	echo "Unhandled reason: ${reason}" >&2
	297	exit 2
	298	;;
	299	esac
	300
	301	# Terminate
	302	exit 0