-
-
Notifications
You must be signed in to change notification settings - Fork 6.3k
/
vpnsetup.sh
executable file
·315 lines (291 loc) · 9.8 KB
/
vpnsetup.sh
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
#!/bin/sh
#
# Script for automatic setup of an IPsec VPN server on Ubuntu, Debian, CentOS/RHEL,
# Rocky Linux, AlmaLinux, Oracle Linux, Amazon Linux 2 and Alpine Linux
#
# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC!
#
# The latest version of this script is available at:
# https://github.com/hwdsl2/setup-ipsec-vpn
#
# Copyright (C) 2021-2024 Lin Song <linsongui@gmail.com>
#
# This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
# Unported License: http://creativecommons.org/licenses/by-sa/3.0/
#
# Attribution required: please include my name in any derivative and let me
# know how you have improved it!
# =====================================================
# Define your own values for these variables
# - IPsec pre-shared key, VPN username and password
# - All values MUST be placed inside 'single quotes'
# - DO NOT use these special characters within values: \ " '
YOUR_IPSEC_PSK=''
YOUR_USERNAME=''
YOUR_PASSWORD=''
# =====================================================
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
exiterr() { echo "Error: $1" >&2; exit 1; }
check_ip() {
IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
}
check_dns_name() {
FQDN_REGEX='^([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$'
printf '%s' "$1" | tr -d '\n' | grep -Eq "$FQDN_REGEX"
}
check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
check_vz() {
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
}
check_lxc() {
# shellcheck disable=SC2154
if [ "$container" = "lxc" ] && [ ! -e /dev/ppp ]; then
cat 1>&2 <<'EOF'
Error: /dev/ppp is missing. LXC containers require configuration.
See: https://github.com/hwdsl2/setup-ipsec-vpn/issues/1014
EOF
exit 1
fi
}
check_os() {
rh_file="/etc/redhat-release"
if [ -f "$rh_file" ]; then
os_type=centos
if grep -q "Red Hat" "$rh_file"; then
os_type=rhel
fi
[ -f /etc/oracle-release ] && os_type=ol
grep -qi rocky "$rh_file" && os_type=rocky
grep -qi alma "$rh_file" && os_type=alma
if grep -q "release 7" "$rh_file"; then
os_ver=7
elif grep -q "release 8" "$rh_file"; then
os_ver=8
grep -qi stream "$rh_file" && os_ver=8s
elif grep -q "release 9" "$rh_file"; then
os_ver=9
grep -qi stream "$rh_file" && os_ver=9s
else
exiterr "This script only supports CentOS/RHEL 7-9."
fi
if [ "$os_type" = "centos" ] \
&& { [ "$os_ver" = 7 ] || [ "$os_ver" = 8 ] || [ "$os_ver" = 8s ]; }; then
exiterr "CentOS Linux $os_ver is EOL and not supported."
fi
elif grep -qs "Amazon Linux release 2 " /etc/system-release; then
os_type=amzn
os_ver=2
elif grep -qs "Amazon Linux release 2023" /etc/system-release; then
exiterr "Amazon Linux 2023 is not supported."
else
os_type=$(lsb_release -si 2>/dev/null)
[ -z "$os_type" ] && [ -f /etc/os-release ] && os_type=$(. /etc/os-release && printf '%s' "$ID")
case $os_type in
[Uu]buntu)
os_type=ubuntu
;;
[Dd]ebian|[Kk]ali)
os_type=debian
;;
[Rr]aspbian)
os_type=raspbian
;;
[Aa]lpine)
os_type=alpine
;;
*)
cat 1>&2 <<'EOF'
Error: This script only supports one of the following OS:
Ubuntu, Debian, CentOS/RHEL, Rocky Linux, AlmaLinux,
Oracle Linux, Amazon Linux 2 or Alpine Linux
EOF
exit 1
;;
esac
if [ "$os_type" = "alpine" ]; then
os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
if [ "$os_ver" != "3.19" ] && [ "$os_ver" != "3.20" ]; then
exiterr "This script only supports Alpine Linux 3.19/3.20."
fi
else
os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
if [ "$os_ver" = 8 ] || [ "$os_ver" = 9 ] || [ "$os_ver" = "jessiesid" ] \
|| [ "$os_ver" = "bustersid" ]; then
cat 1>&2 <<EOF
Error: This script requires Debian >= 10 or Ubuntu >= 20.04.
This version of Ubuntu/Debian is too old and not supported.
EOF
exit 1
fi
fi
fi
}
check_iface() {
def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
if [ "$os_type" != "alpine" ]; then
[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
fi
def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
check_wl=0
if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
if ! uname -m | grep -qi -e '^arm' -e '^aarch64'; then
check_wl=1
fi
else
check_wl=1
fi
fi
if [ "$check_wl" = 1 ]; then
case $def_iface in
wl*)
exiterr "Wireless interface '$def_iface' detected. DO NOT run this script on your PC or Mac!"
;;
esac
fi
}
check_creds() {
[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"
if [ -z "$VPN_IPSEC_PSK" ] && [ -z "$VPN_USER" ] && [ -z "$VPN_PASSWORD" ]; then
return 0
fi
if [ -z "$VPN_IPSEC_PSK" ] || [ -z "$VPN_USER" ] || [ -z "$VPN_PASSWORD" ]; then
exiterr "All VPN credentials must be specified. Edit the script and re-enter them."
fi
if printf '%s' "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" | LC_ALL=C grep -q '[^ -~]\+'; then
exiterr "VPN credentials must not contain non-ASCII characters."
fi
case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
*[\\\"\']*)
exiterr "VPN credentials must not contain these special characters: \\ \" '"
;;
esac
}
check_dns() {
if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; }; then
exiterr "The DNS server specified is invalid."
fi
}
check_server_dns() {
if [ -n "$VPN_DNS_NAME" ] && ! check_dns_name "$VPN_DNS_NAME"; then
exiterr "Invalid DNS name. 'VPN_DNS_NAME' must be a fully qualified domain name (FQDN)."
fi
}
check_client_name() {
if [ -n "$VPN_CLIENT_NAME" ]; then
name_len="$(printf '%s' "$VPN_CLIENT_NAME" | wc -m)"
if [ "$name_len" -gt "64" ] || printf '%s' "$VPN_CLIENT_NAME" | LC_ALL=C grep -q '[^A-Za-z0-9_-]\+' \
|| case $VPN_CLIENT_NAME in -*) true ;; *) false ;; esac; then
exiterr "Invalid client name. Use one word only, no special characters except '-' and '_'."
fi
fi
}
wait_for_apt() {
count=0
apt_lk=/var/lib/apt/lists/lock
pkg_lk=/var/lib/dpkg/lock
while fuser "$apt_lk" "$pkg_lk" >/dev/null 2>&1 \
|| lsof "$apt_lk" >/dev/null 2>&1 || lsof "$pkg_lk" >/dev/null 2>&1; do
[ "$count" = 0 ] && echo "## Waiting for apt to be available..."
[ "$count" -ge 100 ] && exiterr "Could not get apt/dpkg lock."
count=$((count+1))
printf '%s' '.'
sleep 3
done
}
install_pkgs() {
if ! command -v wget >/dev/null 2>&1; then
if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
wait_for_apt
export DEBIAN_FRONTEND=noninteractive
(
set -x
apt-get -yqq update || apt-get -yqq update
) || exiterr "'apt-get update' failed."
(
set -x
apt-get -yqq install wget >/dev/null || apt-get -yqq install wget >/dev/null
) || exiterr "'apt-get install wget' failed."
elif [ "$os_type" != "alpine" ]; then
(
set -x
yum -y -q install wget >/dev/null || yum -y -q install wget >/dev/null
) || exiterr "'yum install wget' failed."
fi
fi
if [ "$os_type" = "alpine" ]; then
(
set -x
apk add -U -q bash coreutils grep net-tools sed wget
) || exiterr "'apk add' failed."
fi
}
get_setup_url() {
base_url1="https://raw.githubusercontent.com/hwdsl2/setup-ipsec-vpn/master"
base_url2="https://gitlab.com/hwdsl2/setup-ipsec-vpn/-/raw/master"
sh_file="vpnsetup_ubuntu.sh"
if [ "$os_type" = "centos" ] || [ "$os_type" = "rhel" ] || [ "$os_type" = "rocky" ] \
|| [ "$os_type" = "alma" ] || [ "$os_type" = "ol" ]; then
sh_file="vpnsetup_centos.sh"
elif [ "$os_type" = "amzn" ]; then
sh_file="vpnsetup_amzn.sh"
elif [ "$os_type" = "alpine" ]; then
sh_file="vpnsetup_alpine.sh"
fi
setup_url1="$base_url1/$sh_file"
setup_url2="$base_url2/$sh_file"
}
run_setup() {
status=0
if tmpdir=$(mktemp --tmpdir -d vpn.XXXXX 2>/dev/null); then
if ( set -x; wget -t 3 -T 30 -q -O "$tmpdir/vpn.sh" "$setup_url1" \
|| wget -t 3 -T 30 -q -O "$tmpdir/vpn.sh" "$setup_url2" \
|| curl -m 30 -fsL "$setup_url1" -o "$tmpdir/vpn.sh" 2>/dev/null ); then
VPN_IPSEC_PSK="$VPN_IPSEC_PSK" VPN_USER="$VPN_USER" \
VPN_PASSWORD="$VPN_PASSWORD" \
VPN_PUBLIC_IP="$VPN_PUBLIC_IP" VPN_L2TP_NET="$VPN_L2TP_NET" \
VPN_L2TP_LOCAL="$VPN_L2TP_LOCAL" VPN_L2TP_POOL="$VPN_L2TP_POOL" \
VPN_XAUTH_NET="$VPN_XAUTH_NET" VPN_XAUTH_POOL="$VPN_XAUTH_POOL" \
VPN_DNS_SRV1="$VPN_DNS_SRV1" VPN_DNS_SRV2="$VPN_DNS_SRV2" \
VPN_DNS_NAME="$VPN_DNS_NAME" VPN_CLIENT_NAME="$VPN_CLIENT_NAME" \
VPN_PROTECT_CONFIG="$VPN_PROTECT_CONFIG" \
VPN_CLIENT_VALIDITY="$VPN_CLIENT_VALIDITY" \
VPN_SKIP_IKEV2="$VPN_SKIP_IKEV2" VPN_SWAN_VER="$VPN_SWAN_VER" \
/bin/bash "$tmpdir/vpn.sh" || status=1
else
status=1
echo "Error: Could not download VPN setup script." >&2
fi
/bin/rm -f "$tmpdir/vpn.sh"
/bin/rmdir "$tmpdir"
else
exiterr "Could not create temporary directory."
fi
}
vpnsetup() {
check_root
check_vz
check_lxc
check_os
check_iface
check_creds
check_dns
check_server_dns
check_client_name
install_pkgs
get_setup_url
run_setup
}
## Defer setup until we have the complete script
vpnsetup "$@"
exit "$status"