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bd3bcb45 | 1 | #!/bin/bash |
66c36198 PM |
2 | ############################################################################### |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2007-2022 IPFire Team <info@ipfire.org> # | |
6 | # # | |
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. # | |
11 | # # | |
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. # | |
16 | # # | |
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/>. # | |
19 | # # | |
20 | ############################################################################### | |
bd3bcb45 MT |
21 | |
22 | . /etc/sysconfig/rc | |
23 | . ${rc_functions} | |
24 | ||
9ae73c30 MT |
25 | # Set PATH to find our own executables |
26 | export PATH=/usr/local/sbin:/usr/local/bin:${PATH} | |
27 | ||
68e060cb MT |
28 | # AWS supports an MTU of up to 9001 bytes |
29 | DEFAULT_MTU=9001 | |
30 | ||
bd3bcb45 MT |
31 | get() { |
32 | local file="${1}" | |
33 | ||
4e4c122c | 34 | wget -qO - "http://169.254.169.254/latest/${file}" |
bd3bcb45 MT |
35 | } |
36 | ||
37 | to_address() { | |
38 | local n="${1}" | |
39 | ||
40 | local o1=$(( (n & 0xff000000) >> 24 )) | |
41 | local o2=$(( (n & 0xff0000) >> 16 )) | |
42 | local o3=$(( (n & 0xff00) >> 8 )) | |
43 | local o4=$(( (n & 0xff) )) | |
44 | ||
45 | printf "%d.%d.%d.%d\n" "${o1}" "${o2}" "${o3}" "${o4}" | |
46 | } | |
47 | ||
48 | to_integer() { | |
49 | local address="${1}" | |
50 | ||
51 | local integer=0 | |
52 | ||
53 | local i | |
54 | for i in ${address//\./ }; do | |
55 | integer=$(( (integer << 8) + i )) | |
56 | done | |
57 | ||
58 | printf "%d\n" "${integer}" | |
59 | } | |
60 | ||
61 | prefix2netmask() { | |
62 | local prefix=${1} | |
63 | ||
64 | local zeros=$(( 32 - prefix )) | |
65 | local netmask=0 | |
66 | ||
67 | local i | |
68 | for (( i=0; i<${zeros}; i++ )); do | |
69 | netmask=$(( (netmask << 1) ^ 1 )) | |
70 | done | |
71 | ||
72 | to_address "$(( netmask ^ 0xffffffff ))" | |
73 | } | |
74 | ||
75 | import_aws_configuration() { | |
4e4c122c | 76 | local instance_id="$(get meta-data/instance-id)" |
bd3bcb45 MT |
77 | |
78 | boot_mesg "Importing AWS configuration for instance ${instance_id}..." | |
79 | ||
eb7ccf87 MT |
80 | # Store instance ID |
81 | echo "${instance_id}" > /var/run/aws-instance-id | |
82 | ||
bd3bcb45 | 83 | # Initialise system settings |
4e4c122c | 84 | local hostname=$(get meta-data/local-hostname) |
bd3bcb45 | 85 | |
3273ff48 MT |
86 | # Set hostname |
87 | if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then | |
88 | echo "HOSTNAME=${hostname%%.*}" >> /var/ipfire/main/settings | |
89 | fi | |
90 | ||
91 | # Set domainname | |
92 | if ! grep -q "^DOMAINNAME=" /var/ipfire/main/settings; then | |
93 | echo "DOMAINNAME=${hostname#*.}" >> /var/ipfire/main/settings | |
bd3bcb45 MT |
94 | fi |
95 | ||
1413006b MT |
96 | # Create setup user |
97 | if ! getent passwd setup &>/dev/null; then | |
e2d9fe7e | 98 | useradd setup -s /usr/bin/run-setup -g nobody -m |
87d7fc66 MT |
99 | |
100 | # Unlock the account | |
101 | usermod -p "x" setup | |
1413006b | 102 | fi |
2e42a9ea | 103 | |
53eb4918 MT |
104 | # Import SSH keys for setup user |
105 | local line | |
4e4c122c | 106 | for line in $(get "meta-data/public-keys/"); do |
53eb4918 MT |
107 | local key_no="${line%=*}" |
108 | ||
4e4c122c | 109 | local key="$(get meta-data/public-keys/${key_no}/openssh-key)" |
53eb4918 MT |
110 | if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then |
111 | mkdir -p "/home/setup/.ssh" | |
112 | chmod 700 "/home/setup/.ssh" | |
6a7e6b44 | 113 | chown setup.nobody "/home/setup/.ssh" |
53eb4918 MT |
114 | |
115 | echo "${key}" >> "/home/setup/.ssh/authorized_keys" | |
116 | chmod 600 "/home/setup/.ssh/authorized_keys" | |
6a7e6b44 | 117 | chown setup.nobody "/home/setup/.ssh/authorized_keys" |
53eb4918 | 118 | fi |
2e42a9ea MT |
119 | done |
120 | ||
8defa50e MT |
121 | # Download the user-data script only on the first boot |
122 | if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then | |
123 | # Download user-data | |
124 | local user_data="$(get user-data)" | |
125 | ||
126 | # Save user-data script to be executed later | |
127 | if [ "${user_data:0:2}" = "#!" ]; then | |
128 | echo "${user_data}" > /tmp/aws-user-data.script | |
129 | chmod 700 /tmp/aws-user-data.script | |
130 | ||
131 | # Run the user-data script | |
93363446 MT |
132 | local now="$(date -u +"%s")" |
133 | /tmp/aws-user-data.script &>/var/log/user-data.log.${now} | |
8defa50e MT |
134 | |
135 | # Delete the script right away | |
136 | rm /tmp/aws-user-data.script | |
137 | fi | |
138 | fi | |
4e4c122c | 139 | |
bd3bcb45 | 140 | # Import network configuration |
2e42a9ea MT |
141 | # After this, no network connectivity will be available from this script due to the |
142 | # renaming of the network interfaces for which they have to be shut down | |
0f224ad7 MT |
143 | local config_type=1 |
144 | : > /var/ipfire/ethernet/settings | |
bd3bcb45 | 145 | |
3273ff48 | 146 | local mac |
4e4c122c | 147 | for mac in $(get meta-data/network/interfaces/macs/); do |
bd3bcb45 MT |
148 | # Remove trailing slash |
149 | mac="${mac//\//}" | |
150 | ||
4e4c122c MT |
151 | local device_number="$(get "meta-data/network/interfaces/macs/${mac}/device-number")" |
152 | local interface_id="$(get "meta-data/network/interfaces/macs/${mac}/interface-id")" | |
bd3bcb45 MT |
153 | |
154 | # First IPv4 address | |
4e4c122c | 155 | local ipv4_address="$(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" | head -n1)" |
bd3bcb45 MT |
156 | local ipv4_address_num="$(to_integer "${ipv4_address}")" |
157 | ||
607240e2 | 158 | # Get VPC subnet |
4e4c122c | 159 | local vpc="$(get "meta-data/network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")" |
607240e2 MT |
160 | local vpc_netaddress="${vpc%/*}" |
161 | local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")" | |
162 | ||
bd3bcb45 | 163 | # Get subnet size |
4e4c122c | 164 | local subnet="$(get "meta-data/network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")" |
bd3bcb45 MT |
165 | |
166 | local prefix="${subnet#*/}" | |
167 | local netmask="$(prefix2netmask "${prefix}")" | |
bd3bcb45 MT |
168 | |
169 | # Calculate the network and broadcast addresses | |
170 | local netaddress="${subnet%/*}" | |
171 | local netaddress_num="$(to_integer "${netaddress}")" | |
bd3bcb45 | 172 | |
bd3bcb45 MT |
173 | case "${device_number}" in |
174 | # RED | |
175 | 0) | |
c7141f04 MT |
176 | local interface_name="red0" |
177 | ||
c86fd963 MT |
178 | # The gateway is always the first IP address in the subnet |
179 | local gateway="$(to_address $(( netaddress_num + 1 )))" | |
180 | ||
bd3bcb45 MT |
181 | ( |
182 | echo "RED_TYPE=STATIC" | |
c7141f04 | 183 | echo "RED_DEV=${interface_name}" |
bd3bcb45 MT |
184 | echo "RED_MACADDR=${mac}" |
185 | echo "RED_DESCRIPTION='${interface_id}'" | |
186 | echo "RED_ADDRESS=${ipv4_address}" | |
187 | echo "RED_NETMASK=${netmask}" | |
188 | echo "RED_NETADDRESS=${netaddress}" | |
68e060cb | 189 | echo "RED_MTU=1500" |
bd3bcb45 | 190 | echo "DEFAULT_GATEWAY=${gateway}" |
bd3bcb45 MT |
191 | ) >> /var/ipfire/ethernet/settings |
192 | ||
193 | # Import aliases for RED | |
4e4c122c | 194 | for alias in $(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" | tail -n +2); do |
bd3bcb45 MT |
195 | echo "${alias},on," |
196 | done > /var/ipfire/ethernet/aliases | |
197 | ;; | |
198 | ||
199 | # GREEN | |
200 | 1) | |
c7141f04 MT |
201 | local interface_name="green0" |
202 | ||
bd3bcb45 | 203 | ( |
c7141f04 | 204 | echo "GREEN_DEV=${interface_name}" |
bd3bcb45 MT |
205 | echo "GREEN_MACADDR=${mac}" |
206 | echo "GREEN_DESCRIPTION='${interface_id}'" | |
207 | echo "GREEN_ADDRESS=${ipv4_address}" | |
208 | echo "GREEN_NETMASK=${netmask}" | |
209 | echo "GREEN_NETADDRESS=${netaddress}" | |
68e060cb | 210 | echo "GREEN_MTU=${DEFAULT_MTU}" |
bd3bcb45 MT |
211 | ) >> /var/ipfire/ethernet/settings |
212 | ;; | |
0f224ad7 MT |
213 | |
214 | # ORANGE | |
215 | 2) | |
c7141f04 | 216 | local interface_name="orange0" |
0f224ad7 MT |
217 | config_type=2 |
218 | ||
219 | ( | |
c7141f04 | 220 | echo "ORANGE_DEV=${interface_name}" |
0f224ad7 MT |
221 | echo "ORANGE_MACADDR=${mac}" |
222 | echo "ORANGE_DESCRIPTION='${interface_id}'" | |
223 | echo "ORANGE_ADDRESS=${ipv4_address}" | |
224 | echo "ORANGE_NETMASK=${netmask}" | |
225 | echo "ORANGE_NETADDRESS=${netaddress}" | |
68e060cb | 226 | echo "ORANGE_MTU=${DEFAULT_MTU}" |
0f224ad7 MT |
227 | ) >> /var/ipfire/ethernet/settings |
228 | ;; | |
bd3bcb45 MT |
229 | esac |
230 | done | |
231 | ||
0f224ad7 MT |
232 | # Save CONFIG_TYPE |
233 | echo "CONFIG_TYPE=${config_type}" >> /var/ipfire/ethernet/settings | |
234 | ||
bd3bcb45 MT |
235 | # Actions performed only on the very first start |
236 | if [ ! -e "/var/ipfire/main/firstsetup_ok" ]; then | |
88cb5eb1 MT |
237 | # Disable using ISP nameservers |
238 | sed -e "s/^USE_ISP_NAMESERVERS=.*/USE_ISP_NAMESERVERS=off/" -i /var/ipfire/dns/settings | |
239 | ||
7fa83c2f | 240 | # Enable SSH |
8b59ef08 MT |
241 | sed -e "s/ENABLE_SSH=.*/ENABLE_SSH=on/g" -i /var/ipfire/remote/settings |
242 | ||
0cf70cae MT |
243 | # Disable SSH password authentication |
244 | sed -e "s/^ENABLE_SSH_PASSWORDS=.*/ENABLE_SSH_PASSWORDS=off/" -i /var/ipfire/remote/settings | |
245 | ||
7fa83c2f MT |
246 | # Enable SSH key authentication |
247 | sed -e "s/^ENABLE_SSH_KEYS=.*/ENABLE_SSH_KEYS=on/" -i /var/ipfire/remote/settings | |
248 | ||
8f2c3b49 MT |
249 | # Apply SSH settings |
250 | /usr/local/bin/sshctrl | |
251 | ||
693208bf MT |
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 | ||
bd3bcb45 MT |
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 | ||
647ca912 MT |
286 | # Setup DNS |
287 | for domain_name_server in ${new_domain_name_servers}; do | |
288 | echo "nameserver ${domain_name_server}" | |
289 | done > /etc/resolv.conf | |
290 | ||
291 | # The system is online now | |
292 | touch /var/ipfire/red/active | |
293 | ||
bd3bcb45 MT |
294 | # Import AWS configuration |
295 | import_aws_configuration | |
296 | ;; | |
297 | ||
298 | EXPIRE|FAIL|RELEASE|STOP) | |
647ca912 MT |
299 | # The system is no longer online |
300 | rm -f /var/ipfire/red/active | |
301 | ||
bd3bcb45 MT |
302 | # Remove all IP addresses |
303 | ip addr flush dev "${interface}" | |
c5465a94 MT |
304 | |
305 | # Shut down the interface | |
306 | ip link set "${interface}" down | |
bd3bcb45 MT |
307 | ;; |
308 | ||
309 | *) | |
310 | echo "Unhandled reason: ${reason}" >&2 | |
311 | exit 2 | |
312 | ;; | |
313 | esac | |
314 | ||
315 | # Terminate | |
316 | exit 0 |