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git.ipfire.org Git - people/pmueller/ipfire-2.x.git/blob - src/initscripts/helper/aws-setup
2 ###############################################################################
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2007-2022 IPFire Team <info@ipfire.org> #
7 # This program is free software: you can redistribute it and/or modify #
8 # it under the terms of the GNU General Public License as published by #
9 # the Free Software Foundation, either version 3 of the License, or #
10 # (at your option) any later version. #
12 # This program is distributed in the hope that it will be useful, #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15 # GNU General Public License for more details. #
17 # You should have received a copy of the GNU General Public License #
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
20 ###############################################################################
25 # Set PATH to find our own executables
26 export PATH
=/usr
/local
/sbin
:/usr
/local
/bin
:${PATH}
28 # AWS supports an MTU of up to 9001 bytes
34 wget
-qO - "http://169.254.169.254/latest/${file}"
40 local o1
=$
(( (n
& 0xff000000) >> 24 ))
41 local o2
=$
(( (n
& 0xff0000) >> 16 ))
42 local o3
=$
(( (n
& 0xff00) >> 8 ))
43 local o4
=$
(( (n
& 0xff) ))
45 printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}"
54 for i
in ${address//\./ }; do
55 integer
=$
(( (integer
<< 8) + i ))
58 printf "%d\n" "${integer}"
64 local zeros=$(( 32 - prefix ))
68 for (( i=0; i<${zeros}; i++ )); do
69 netmask=$(( (netmask << 1) ^ 1 ))
72 to_address "$(( netmask ^ 0xffffffff ))"
75 import_aws_configuration() {
76 local instance_id="$(get meta-data/instance-id)"
78 boot_mesg "Importing AWS configuration for instance ${instance_id}..."
81 echo "${instance_id}" > /var/run/aws-instance-id
83 # Initialise system settings
84 local hostname=$(get meta-data/local-hostname)
87 if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
88 echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings
92 if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then
93 echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings
97 if ! getent passwd setup &>/dev/null; then
98 useradd setup -s /usr/bin/run-setup -g nobody -m
104 # Import SSH keys for setup user
106 for line in $(get "meta-data/public-keys/"); do
107 local key_no="${line%=*}"
109 local key="$(get meta-data/public-keys/${key_no}/openssh-key)"
110 if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then
111 mkdir -p "/home/setup/.ssh"
112 chmod 700 "/home/setup/.ssh"
113 chown setup.nobody "/home/setup/.ssh"
115 echo "${key}" >> "/home/setup/.ssh/authorized_keys"
116 chmod 600 "/home/setup/.ssh/authorized_keys"
117 chown setup.nobody "/home/setup/.ssh/authorized_keys"
121 # Import network configuration
122 # After this, no network connectivity will be available from this script due to the
123 # renaming of the network interfaces for which they have to be shut down
125 : > /var/ipfire/ethernet/settings
128 for mac in $(get meta-data/network/interfaces/macs/); do
129 # Remove trailing slash
132 local device_number="$(get "meta-data/network/interfaces/macs/${mac}/device-number")"
133 local interface_id="$(get "meta-data/network/interfaces/macs/${mac}/interface-id")"
136 local ipv4_address="$(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" | head -n1)"
137 local ipv4_address_num="$(to_integer "${ipv4_address}")"
140 local vpc="$(get "meta-data/network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")"
141 local vpc_netaddress="${vpc%/*}"
142 local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")"
145 local subnet="$(get "meta-data/network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")"
147 local prefix="${subnet#*/}"
148 local netmask="$(prefix2netmask "${prefix}")"
150 # Calculate the network and broadcast addresses
151 local netaddress="${subnet%/*}"
152 local netaddress_num="$(to_integer "${netaddress}")"
154 case "${device_number}" in
157 local interface_name="red0"
159 # The gateway is always the first IP address in the subnet
160 local gateway="$(to_address $(( netaddress_num + 1 )))"
163 echo "RED_TYPE=STATIC"
164 echo "RED_DEV=${interface_name}"
165 echo "RED_MACADDR=${mac}"
166 echo "RED_DESCRIPTION='${interface_id}'"
167 echo "RED_ADDRESS=${ipv4_address}"
168 echo "RED_NETMASK=${netmask}"
169 echo "RED_NETADDRESS=${netaddress}"
171 echo "DEFAULT_GATEWAY=${gateway}"
172 ) >> /var/ipfire/ethernet/settings
174 # Import aliases for RED
175 for alias in $(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" | tail -n +2); do
177 done > /var/ipfire/ethernet/aliases
182 local interface_name="green0"
185 echo "GREEN_DEV=${interface_name}"
186 echo "GREEN_MACADDR=${mac}"
187 echo "GREEN_DESCRIPTION='${interface_id}'"
188 echo "GREEN_ADDRESS=${ipv4_address}"
189 echo "GREEN_NETMASK=${netmask}"
190 echo "GREEN_NETADDRESS=${netaddress}"
191 echo "GREEN_MTU=${DEFAULT_MTU}"
192 ) >> /var/ipfire/ethernet/settings
197 local interface_name="orange0"
201 echo "ORANGE_DEV=${interface_name}"
202 echo "ORANGE_MACADDR=${mac}"
203 echo "ORANGE_DESCRIPTION='${interface_id}'"
204 echo "ORANGE_ADDRESS=${ipv4_address}"
205 echo "ORANGE_NETMASK=${netmask}"
206 echo "ORANGE_NETADDRESS=${netaddress}"
207 echo "ORANGE_MTU=${DEFAULT_MTU}"
208 ) >> /var/ipfire/ethernet/settings
214 echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings
216 # Actions performed only on the very first start
217 if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then
218 # Disable using ISP nameservers
219 sed -e "s/^USE_ISP_NAMESERVERS=.*/USE_ISP_NAMESERVERS=off/" -i /var/ipfire/dns/settings
222 sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings
224 # Disable SSH password authentication
225 sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings
227 # Enable SSH key authentication
228 sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings
231 /usr/local/bin/sshctrl
233 # Mark SSH to start immediately (but not right now)
234 touch /var/ipfire/remote/enablessh
235 chown nobody:nobody /var/ipfire/remote/enablessh
237 # Firewall rules for SSH and WEBIF
239 echo "1,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,cust_srv,SSH,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
240 echo "2,ACCEPT,INPUTFW,ON,std_net_src,ALL,ipfire,RED1,,TCP,,,ON,,,TGT_PORT,444,,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second"
241 ) >> /var/ipfire/firewall/input
244 local user_data="$(get user-data)"
246 # Save user-data script to be executed later
247 if [ "${user_data:0:2}" = "#!" ]; then
248 echo "${user_data}" > /tmp/aws-user-data.script
249 chmod 700 /tmp/aws-user-data.script
251 # Run the user-data script
252 local now="$(date -u +"%s")"
253 /tmp/aws-user-data.script &>/var/log/user-data.log.${now}
255 # Delete the script right away
256 rm /tmp/aws-user-data.script
259 # This script has now completed the first steps of setup
260 touch /var/ipfire/main/firstsetup_ok
269 # Bring up the interface
270 ip link set "${interface}" up
273 BOUND|RENEW|REBIND|REBOOT)
274 # Remove any previous IP addresses
275 ip addr flush dev "${interface}"
277 # Add (or re-add) the new IP address
278 ip addr add "${new_ip_address}/${new_subnet_mask}" dev "${interface}"
280 # Add the default route
281 ip route add default via "${new_routers}"
284 for domain_name_server in ${new_domain_name_servers}; do
285 echo "nameserver ${domain_name_server}"
286 done > /etc/resolv.conf
288 # The system is online now
289 touch /var/ipfire/red/active
291 # Import AWS configuration
292 import_aws_configuration
295 EXPIRE|FAIL|RELEASE|STOP)
296 # The system is no longer online
297 rm -f /var/ipfire/red/active
299 # Remove all IP addresses
300 ip addr flush dev "${interface}"
302 # Shut down the interface
303 ip link set "${interface}" down
307 echo "Unhandled reason: ${reason}" >&2