[ipfire-2.x.git] / src / initscripts / helper / azure-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 - --header="Metadata:true" "http://169.254.169.254/metadata/instance/${file}?api-version=2019-06-01&format=text"
}

format_mac() {
	local mac="${1,,}"

	echo "${mac:0:2}:${mac:2:2}:${mac:4:2}:${mac:6:2}:${mac:8:2}:${mac:10:2}"
}

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_azure_configuration() {
	local instance_id="$(get compute/vmId)"

	boot_mesg "Importing Microsoft Azure configuration for instance ${instance_id}..."

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

	# Initialise system settings
	local hostname=$(get compute/name)

	# 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 SSH keys for setup user
	local line
	for line in $(get "compute/publicKeys/"); do
		# Remove trailing slash
		local key_no="${line//\//}"

		# Get the path where this key should be installed
		local path="$(get "compute/publicKeys/${key_no}/path")"
		local key="$(get "compute/publicKeys/${key_no}/keyData")"

		local user
		if [[ "${path}" =~ ^/home ]]; then
			user="${path:6}"
			user="${user%%/*}"
		else
			# Cannot process this user
			continue
		fi

		# Create user if it does not exist
		if ! getent passwd "${user}" &>/dev/null; then
			useradd "${user}" -s /usr/bin/run-setup -g nobody -m

			# Unlock the account
			usermod -p "x" "${user}"
		fi

		if [ -n "${key}" ] && ! grep -q "^${key}$" "${path}" 2>/dev/null; then
			local dir="$(dirname "${path}")"

			# Install directory
			mkdir -p "${dir}"
			chmod 700 "${dir}"
			chown "${user}.nobody" "${dir}"

			# Install the key
			echo "${key}" >> "${path}"
			chmod 600 "${path}"
			chown "${user}.nobody" "${path}"
		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 customData)"

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

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

			# Delete the script right away
			rm /tmp/azure-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 device_number
	for device_number in $(get network/interface); do
		# Remove trailing slash
		device_number="${device_number//\//}"

		local mac="$(get "network/interface/${device_number}/macAddress")"
		mac="$(format_mac "${mac}")"

		# First IPv4 address
		local ipv4_address="$(get "network/interface/${device_number}/ipv4/ipAddress/0/privateIpAddress")"
		local ipv4_address_num="$(to_integer "${ipv4_address}")"
		local prefix="$(get "network/interface/${device_number}/ipv4/subnet/0/prefix")"
		local netmask="$(prefix2netmask "${prefix}")"
		local netmask_num="$(to_integer "${netmask}")"

		# Calculate the network and broadcast addresses
		local netaddress="$(get "network/interface/${device_number}/ipv4/subnet/0/address")"
		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
				local address_no
				for address_no in $(get "network/interface/0/ipv4/ipAddress"); do
					# Remove trailing slash
					address_no="${address_no//\//}"

					# Skip the first address
					[ "${address_no}" = "0" ] && continue

					# Fetch the IP address
					local alias="$(get "network/interface/0/ipv4/ipAddress/${address_no}/privateIpAddress")"
					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 Azure configuration
		import_azure_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
acf47bfa MT	1	#!/bin/bash
	2
	3	. /etc/sysconfig/rc
	4	. ${rc_functions}
	5
	6	# Set PATH to find our own executables
	7	export PATH=/usr/local/sbin:/usr/local/bin:${PATH}
	8
	9	get() {
	10	local file="${1}"
	11
	12	wget -qO - --header="Metadata:true" "http://169.254.169.254/metadata/instance/${file}?api-version=2019-06-01&format=text"
	13	}
	14
	15	format_mac() {
	16	local mac="${1,,}"
	17
abccd997	18	echo "${mac:0:2}:${mac:2:2}:${mac:4:2}:${mac:6:2}:${mac:8:2}:${mac:10:2}"
acf47bfa MT	19	}
	20
	21	to_address() {
	22	local n="${1}"
	23
	24	local o1=$(( (n & 0xff000000) >> 24 ))
	25	local o2=$(( (n & 0xff0000) >> 16 ))
	26	local o3=$(( (n & 0xff00) >> 8 ))
	27	local o4=$(( (n & 0xff) ))
	28
	29	printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}"
	30	}
	31
	32	to_integer() {
	33	local address="${1}"
	34
	35	local integer=0
	36
	37	local i
	38	for i in ${address//\./ }; do
	39	integer=$(( (integer << 8) + i ))
	40	done
	41
	42	printf "%d\n" "${integer}"
	43	}
	44
	45	prefix2netmask() {
	46	local prefix=${1}
	47
	48	local zeros=$(( 32 - prefix ))
	49	local netmask=0
	50
	51	local i
	52	for (( i=0; i<${zeros}; i++ )); do
	53	netmask=$(( (netmask << 1) ^ 1 ))
	54	done
	55
	56	to_address "$(( netmask ^ 0xffffffff ))"
	57	}
	58
	59	import_azure_configuration() {
	60	local instance_id="$(get compute/vmId)"
	61
	62	boot_mesg "Importing Microsoft Azure configuration for instance ${instance_id}..."
	63
	64	# Store instance ID
	65	echo "${instance_id}" > /var/run/azure-instance-id
	66
	67	# Initialise system settings
	68	local hostname=$(get compute/name)
	69
	70	# Set hostname
	71	if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
	72	echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings
	73	fi
	74
	75	# Set domainname
	76	if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then
	77	echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings
	78	fi
	79
	80	# Import SSH keys for setup user
	81	local line
	82	for line in $(get "compute/publicKeys/"); do
83	# Remove trailing slash
84	local key_no="${line//\//}"
85
86	# Get the path where this key should be installed
87	local path="$(get "compute/publicKeys/${key_no}/path")"
88	local key="$(get "compute/publicKeys/${key_no}/keyData")"
89
90	local user
91	if [[ "${path}" =~ ^/home ]]; then
92	user="${path:6}"
93	user="${user%%/*}"
94	else
95	# Cannot process this user
96	continue
97	fi
98
99	# Create user if it does not exist
100	if ! getent passwd "${user}" &>/dev/null; then
101	useradd "${user}" -s /usr/bin/run-setup -g nobody -m
102
103	# Unlock the account
104	usermod -p "x" "${user}"
105	fi
106
107	if [ -n "${key}" ] && ! grep -q "^${key}$" "${path}" 2>/dev/null; then
108	local dir="$(dirname "${path}")"
109
110	# Install directory
111	mkdir -p "${dir}"
112	chmod 700 "${dir}"
113	chown "${user}.nobody" "${dir}"
114
115	# Install the key
116	echo "${key}" >> "${path}"
117	chmod 600 "${path}"
118	chown "${user}.nobody" "${path}"
119	fi
120	done
121
122	# Download the user-data script only on the first boot
123	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
124	# Download user-data
125	local user_data="$(get customData)"
126
127	# Save user-data script to be executed later
128	if [ "${user_data:0:2}" = "#!" ]; then
129	echo "${user_data}" > /tmp/azure-user-data.script
130	chmod 700 /tmp/azure-user-data.script
131
132	# Run the user-data script
133	local now="$(date -u +"%s")"
134	/tmp/azure-user-data.script &>/var/log/user-data.log.${now}
135
136	# Delete the script right away
137	rm /tmp/azure-user-data.script
138	fi
139	fi
140
acf47bfa MT	141	# Import network configuration
	142	# After this, no network connectivity will be available from this script due to the
	143	# renaming of the network interfaces for which they have to be shut down
	144	local config_type=1
	145	: > /var/ipfire/ethernet/settings
	146
	147	local device_number
	148	for device_number in $(get network/interface); do
	149	# Remove trailing slash
	150	device_number="${device_number//\//}"
	151
	152	local mac="$(get "network/interface/${device_number}/macAddress")"
	153	mac="$(format_mac "${mac}")"
	154
	155	# First IPv4 address
	156	local ipv4_address="$(get "network/interface/${device_number}/ipv4/ipAddress/0/privateIpAddress")"
	157	local ipv4_address_num="$(to_integer "${ipv4_address}")"
	158	local prefix="$(get "network/interface/${device_number}/ipv4/subnet/0/prefix")"
	159	local netmask="$(prefix2netmask "${prefix}")"
	160	local netmask_num="$(to_integer "${netmask}")"
	161
	162	# Calculate the network and broadcast addresses
	163	local netaddress="$(get "network/interface/${device_number}/ipv4/subnet/0/address")"
	164	local netaddress_num="$(to_integer "${netaddress}")"
	165	local broadcast="$(to_address $(( ipv4_address_num \| (0xffffffff ^ netmask_num) )))"
	166
	167	case "${device_number}" in
	168	# RED
	169	0)
	170	local interface_name="red0"
	171
	172	# The gateway is always the first IP address in the subnet
	173	local gateway="$(to_address $(( netaddress_num + 1 )))"
	174
acf47bfa MT	175	(
	176	echo "RED_TYPE=STATIC"
	177	echo "RED_DEV=${interface_name}"
	178	echo "RED_MACADDR=${mac}"
	179	echo "RED_DESCRIPTION='${interface_id}'"
	180	echo "RED_ADDRESS=${ipv4_address}"
	181	echo "RED_NETMASK=${netmask}"
	182	echo "RED_NETADDRESS=${netaddress}"
	183	echo "RED_BROADCAST=${broadcast}"
	184	echo "DEFAULT_GATEWAY=${gateway}"
acf47bfa MT	185	) >> /var/ipfire/ethernet/settings
	186
	187	# Import aliases for RED
	188	local address_no
	189	for address_no in $(get "network/interface/0/ipv4/ipAddress"); do
	190	# Remove trailing slash
	191	address_no="${address_no//\//}"
	192
	193	# Skip the first address
	194	[ "${address_no}" = "0" ] && continue
	195
	196	# Fetch the IP address
	197	local alias="$(get "network/interface/0/ipv4/ipAddress/${address_no}/privateIpAddress")"
	198	echo "${alias},on,"
	199	done > /var/ipfire/ethernet/aliases
	200	;;
	201
	202	# GREEN
	203	1)
	204	local interface_name="green0"
	205
	206	(
	207	echo "GREEN_DEV=${interface_name}"
	208	echo "GREEN_MACADDR=${mac}"
	209	echo "GREEN_DESCRIPTION='${interface_id}'"
	210	echo "GREEN_ADDRESS=${ipv4_address}"
	211	echo "GREEN_NETMASK=${netmask}"
	212	echo "GREEN_NETADDRESS=${netaddress}"
	213	echo "GREEN_BROADCAST=${broadcast}"
	214	) >> /var/ipfire/ethernet/settings
	215	;;
	216
	217	# ORANGE
	218	2)
	219	local interface_name="orange0"
	220	config_type=2
	221
	222	(
	223	echo "ORANGE_DEV=${interface_name}"
	224	echo "ORANGE_MACADDR=${mac}"
	225	echo "ORANGE_DESCRIPTION='${interface_id}'"
	226	echo "ORANGE_ADDRESS=${ipv4_address}"
	227	echo "ORANGE_NETMASK=${netmask}"
	228	echo "ORANGE_NETADDRESS=${netaddress}"
	229	echo "ORANGE_BROADCAST=${broadcast}"
	230	) >> /var/ipfire/ethernet/settings
	231	;;
	232	esac
	233	done
	234
	235	# Save CONFIG_TYPE
	236	echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings
	237
	238	# Actions performed only on the very first start
	239	if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
	240	# Enable SSH
	241	sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings
	242
	243	# Disable SSH password authentication
	244	sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings
	245
	246	# Enable SSH key authentication
	247	sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings
	248
249	# Apply SSH settings
250	/usr/local/bin/sshctrl
251
252	# Mark SSH to start immediately (but not right now)
253	touch /var/ipfire/remote/enablessh
254	chown nobody:nobody /var/ipfire/remote/enablessh
255
256	# Firewall rules for SSH and WEBIF
257	(
258	echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
259	echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
260	) >> /var/ipfire/firewall/input
261
262	# This script has now completed the first steps of setup
263	touch /var/ipfire/main/firstsetup_ok
264	fi
265
266	# All done
267	echo_ok
268	}
269
270	case "${reason}" in
271	PREINIT)
272	# Bring up the interface
273	ip link set "${interface}" up
274	;;
275
276	BOUND\|RENEW\|REBIND\|REBOOT)
277	# Remove any previous IP addresses
278	ip addr flush dev "${interface}"
279
280	# Add (or re-add) the new IP address
281	ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"
282
283	# Add the default route
284	ip route add default via "${new_routers}"
285
286	# Setup DNS
287	for domain_name_server in ${new_domain_name_servers}; do
288	echo "nameserver ${domain_name_server}"
289	done > /etc/resolv.conf
290
291	# The system is online now
292	touch /var/ipfire/red/active
293
294	# Import Azure configuration
295	import_azure_configuration
296	;;
297
298	EXPIRE\|FAIL\|RELEASE\|STOP)
299	# The system is no longer online
300	rm -f /var/ipfire/red/active
301
302	# Remove all IP addresses
303	ip addr flush dev "${interface}"
304
305	# Shut down the interface
306	ip link set "${interface}" down
307	;;
308
309	*)
310	echo "Unhandled reason: ${reason}" >&2
311	exit 2
312	;;
313	esac
314
315	# Terminate
316	exit 0