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EvoBSD
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Delete the deprecated OpenVPN role

This commit is contained in:
Jérémy Dubois 2022-01-24 19:11:37 +01:00
parent 93f21a947c
commit 66c84dca6c
12 changed files with 2 additions and 549 deletions
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2
CHANGELOG
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@ -19,6 +19,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### Removed
- openvpn : deleted this deprecated role ; use the one provided in the ansible-roles repo
## [21.12] - 2021-12-17
### Changed

1
evolixisation.yml
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@ -28,7 +28,6 @@
- nagios-nrpe
- evocheck
- post-install
# - openvpn
# - ospf
# - bgp
# - { role: collectd, collectd_server: "127.0.0.1" }

13
roles/openvpn/README.md
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@ -1,13 +0,0 @@
# OpenVPN
Installation and custom configuration of OpenVPN server.
## Tasks
Everything is in the `tasks/main.yml` file.
## Available variables
The full list of variables (with default values) can be found in `defaults/main.yml`.
NOTE: Make sure you have already cloned shellpki in ~/GIT/

3
roles/openvpn/defaults/main.yml
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@ -1,3 +0,0 @@
---
openvpn_lan: "192.168.42.0"
openvpn_netmask: "255.255.255.0"

215
roles/openvpn/files/check_openvpn.pl
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@ -1,215 +0,0 @@
#!/usr/bin/perl -w
#######################################################################
#
# Copyright (c) 2007 Jaime Gascon Romero <jgascon@gmail.com>
#
# License Information:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# $Id: check_openvpn.pl,v 1.1 2014/09/29 08:39:24 rdessort Exp $
# $Revision: 1.1 $
# Home Site: http://emergeworld.blogspot.com/
# #####################################################################
use diagnostics;
use strict;
use Net::Telnet ();
use Getopt::Long qw(:config no_ignore_case);
use vars qw($PROGNAME $VERSION);
use lib "/usr/local/libexec/nagios/";
use utils qw(%ERRORS);
$PROGNAME = "check_openvpn";
$VERSION = '$Revision: 1.1 $';
$ENV{'PATH'}='';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
my ($opt_h, $opt_H, $opt_p, $opt_P, $opt_t, $opt_i, $opt_n, $opt_c, $opt_w, $opt_C, $opt_r);
sub print_help ();
sub print_usage ();
GetOptions
("h" => \$opt_h, "help" => \$opt_h,
"H=s" => \$opt_H, "host=s" => \$opt_H,
"p=i" => \$opt_p, "port=i" => \$opt_p,
"P=s" => \$opt_P, "password=s" => \$opt_P,
"t=i" => \$opt_t, "timeout=i" => \$opt_t,
"i" => \$opt_i, "ip" => \$opt_i,
"n" => \$opt_n, "numeric" => \$opt_n,
"c" => \$opt_c, "critical" => \$opt_c,
"w" => \$opt_w, "warning" => \$opt_w,
"C=s" => \$opt_C, "common_name=s" => \$opt_C,
"r=s" => \$opt_r, "remote_ip=s" => \$opt_r,
) or exit $ERRORS{'UNKNOWN'};
# default values
unless ( defined $opt_t ) {
$opt_t = 10;
}
if ($opt_h) {print_help(); exit $ERRORS{'OK'};}
if ( ! defined($opt_H) || ! defined($opt_p) ) {
print_usage();
exit $ERRORS{'UNKNOWN'}
}
my @lines;
my @clients;
my @clients_ip;
my $t;
eval {
$t = new Net::Telnet (Timeout => $opt_t,
Port => $opt_p,
Prompt => '/END$/'
);
$t->open($opt_H);
if ( defined $opt_P ) {
$t->waitfor('/ENTER PASSWORD:$/');
$t->print($opt_P);
}
$t->waitfor('/^$/');
@lines = $t->cmd("status 2");
$t->close;
};
if ($@) {
print "OpenVPN Critical: Can't connect to server\n";
exit $ERRORS{'CRITICAL'};
}
if (defined $opt_i || defined $opt_r) {
foreach (@lines) {
if ($_ =~ /CLIENT_LIST,.*,(\d+\.\d+\.\d+\.\d+):\d+,/) {
push @clients_ip, $1;
}
}
if (defined $opt_i) {
print "OpenVPN OK: "."@clients_ip ";
exit $ERRORS{'OK'};
} elsif (defined $opt_r) {
if ( ! grep /\b$opt_r\b/, @clients_ip) {
if (defined $opt_c) {
print "OpenVPN CRITICAL: $opt_r don't found";
exit $ERRORS{'CRITICAL'};
} else {
print "OpenVPN WARNING: $opt_r don't found";
exit $ERRORS{'WARNING'};
}
}
print "OpenVPN OK: "."@clients_ip ";
exit $ERRORS{'OK'};
}
}
foreach (@lines) {
if ($_ =~ /CLIENT_LIST,(.*),\d+\.\d+\.\d+\.\d+:\d+,/) {
push @clients, $1;
}
}
if (defined $opt_C) {
if ( ! grep /\b$opt_C\b/, @clients) {
if (defined $opt_c) {
print "OpenVPN CRITICAL: $opt_C don't found";
exit $ERRORS{'CRITICAL'};
} else {
print "OpenVPN WARNING: $opt_C don't found";
exit $ERRORS{'WARNING'};
}
}
}
if (defined $opt_n) {
print "OpenVPN OK: ".@clients." connected clients.";
exit $ERRORS{'OK'};
}
print "OpenVPN OK: "."@clients ";
exit $ERRORS{'OK'};
#######################################################################
###### Subroutines ####################################################
sub print_usage() {
print "Usage: $PROGNAME -H | --host <IP or hostname> -p | --port <port number> [-P | --password] <password> [-t | --timeout] <timeout in seconds>
[-i | --ip] [-n | --numeric] [-C | --common_name] <common_name> [-r | --remote_ip] <remote_ip> [-c | --critical] [-w | --warning]\n\n";
print " $PROGNAME [-h | --help]\n";
}
sub print_help() {
print "$PROGNAME $VERSION\n\n";
print "Copyright (c) 2007 Jaime Gascon Romero
Nagios plugin to check the clients connected to a openvpn server.
";
print_usage();
print "
-H | --host
IP address or hostname of the openvpn server.
-p | --port
Management port interface of the openvpn server.
-P | --password
Password for the management interface of the openvpn server.
-t | --timeout
Timeout for the connection attempt. Optional, default 10 seconds.
Optional parameters
===================
-i | --ip
Prints the IP address of the remote client instead of the common name.
-n | --numeric
Prints the number of clients connected to the openvpn server.
Matching Parameters
===================
-C | --common_name
The common name, as it is specified in the client certificate, who is wanted to check.
-r | --remote_ip
The client remote ip address who is wanted to check.
-c | --critical
Exits with CRITICAL status if the client specified by the common name or the remote ip address is not connected.
-w | --warning
Exits with WARNING status if the client specified by the common name or the remote ip address is not connected.
Other Parameters
================
-h | --help
Show this help.
";
}
# vim:sts=2:sw=2:ts=2:et

140
roles/openvpn/files/check_openvpn_certificates.sh
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@ -1,140 +0,0 @@
#!/bin/sh
set -eu
trap error 0
STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
STATE=$STATE_OK
CERT_STATE=$STATE
CA_STATE=$STATE
CERT_ECHO=""
CA_ECHO=""
error() {
if [ $? -eq 2 ] && [ "X$CERT_ECHO" = "X" ] && [ "X$CA_ECHO" = "X" ] ; then
echo "CRITICAL - The check exited with an error. Is the conf_file var containing the real conf file location ? On Debian, is the check executed with sudo ?"
fi
}
SYSTEM=$(uname | tr '[:upper:]' '[:lower:]')
date_cmd=$(command -v date)
# Dates in seconds
_15_days="1296000"
_30_days="2592000"
current_date=$($date_cmd +"%s")
# Trying to define the OpenVPN conf file location - default to /etc/openvpn/server.conf
conf_file=$(ps auwwwx | grep openvpn | grep -- --config | grep -v sed | sed -e "s/.*config \(\/etc\/openvpn.*.conf\).*/\1/" | head -1)
[ "$SYSTEM" = "openbsd" ] && conf_file=${conf_file:-$(grep openvpn_flags /etc/rc.conf.local | sed -e "s/.*config \(\/etc\/openvpn.*.conf\).*/\1/")}
conf_file=${conf_file:-"/etc/openvpn/server.conf"}
# Get the cert and ca file location, based on the OpenVPN conf file location
# Done in 2 times because sh does not support pipefail - needed in the case where $conf_file does not exist
cert_file=$(grep -s "^cert " $conf_file)
cert_file=$(echo $cert_file | sed -e "s/^cert *\//\//")
ca_file=$(grep -s "^ca " $conf_file)
ca_file=$(echo $ca_file | sed -e "s/^ca *\//\//")
# Get expiration date of cert and ca certificates
cert_expiration_date=$(grep "Not After" $cert_file | sed -e "s/.*Not After : //")
ca_expiration_date=$(openssl x509 -enddate -noout -in $ca_file | cut -d '=' -f 2)
test_cert_expiration() {
# Already expired - Cert file
if [ $current_date -ge $1 ]; then
CERT_ECHO="CRITICAL - The server certificate has expired on $formatted_cert_expiration_date"
CERT_STATE=$STATE_CRITICAL
# Expiration in 15 days or less - Cert file
elif [ $((current_date+_15_days)) -ge $1 ]; then
CERT_ECHO="CRITICAL - The server certificate expires in 15 days or less : $formatted_cert_expiration_date"
CERT_STATE=$STATE_CRITICAL
# Expiration in 30 days or less - Cert file
elif [ $((current_date+_30_days)) -ge $1 ]; then
CERT_ECHO="WARNING - The server certificate expires in 30 days or less : $formatted_cert_expiration_date"
CERT_STATE=$STATE_WARNING
# Expiration in more than 30 days - Cert file
else
CERT_ECHO="OK - The server certificate expires on $formatted_cert_expiration_date"
CERT_STATE=$STATE_OK
fi
}
test_ca_expiration() {
# Already expired - CA file
if [ $current_date -ge $1 ]; then
CA_ECHO="CRITICAL - The server CA has expired on $formatted_ca_expiration_date"
CA_STATE=$STATE_CRITICAL
# Expiration in 15 days or less - CA file
elif [ $((current_date+_15_days)) -ge $1 ]; then
CA_ECHO="CRITICAL - The server CA expires in 15 days or less : $formatted_ca_expiration_date"
CA_STATE=$STATE_CRITICAL
# Expiration in 30 days or less - CA file
elif [ $((current_date+_30_days)) -ge $1 ]; then
CA_ECHO="WARNING - The server CA expires in 30 days or less : $formatted_ca_expiration_date"
CA_STATE=$STATE_WARNING
# Expiration in more than 30 days - CA file
else
CA_ECHO="OK - The server CA expires on $formatted_ca_expiration_date"
CA_STATE=$STATE_OK
fi
}
# Linux and BSD systems do not implement 'date' the same way
if [ "$SYSTEM" = "linux" ]; then
# Cert expiration date human formated then in seconds
formatted_cert_expiration_date=$(TZ="Europe/Paris" $date_cmd -d "$cert_expiration_date" +"%F %T %Z")
seconds_cert_expiration_date=$(TZ="Europe/Paris" $date_cmd -d "$cert_expiration_date" +"%s")
# CA expiration date human formated then in seconds
formatted_ca_expiration_date=$(TZ="Europe/Paris" $date_cmd -d "$ca_expiration_date" +"%F %T %Z")
seconds_ca_expiration_date=$(TZ="Europe/Paris" $date_cmd -d "$ca_expiration_date" +"%s")
test_cert_expiration $seconds_cert_expiration_date
test_ca_expiration $seconds_ca_expiration_date
elif [ "$SYSTEM" = "openbsd" ]; then
# Cert expiration date for POSIX date, human formated then in seconds
posix_cert_expiration_date=$(echo "$cert_expiration_date" | awk '{ printf $4" "(index("JanFebMarAprMayJunJulAugSepOctNovDec",$1)+2)/3" "$2" ",split($3,time,":"); print time[1],time[2],time[3]}' | awk '{printf "%04d%02d%02d%02d%02d.%02d\n", $1, $2, $3, $4, $5, $6}')
cert_zone=$(echo "$cert_expiration_date" | awk '{print $5}')
formatted_cert_expiration_date=$(TZ=$cert_zone $date_cmd -j -z "Europe/Paris" "$posix_cert_expiration_date" +"%F %T %Z")
seconds_cert_expiration_date=$(TZ=$cert_zone $date_cmd -j -z "Europe/Paris" "$posix_cert_expiration_date" +"%s")
# CA expiration date for POSIX date, human formated then in seconds
posix_ca_expiration_date=$(echo "$ca_expiration_date" | awk '{ printf $4" "(index("JanFebMarAprMayJunJulAugSepOctNovDec",$1)+2)/3" "$2" ",split($3,time,":"); print time[1],time[2],time[3]}' | awk '{printf "%04d%02d%02d%02d%02d.%02d\n", $1, $2, $3, $4, $5, $6}')
ca_zone=$(echo "$ca_expiration_date" | awk '{print $5}')
formatted_ca_expiration_date=$(TZ=$ca_zone $date_cmd -j -z "Europe/Paris" "$posix_ca_expiration_date" +"%F %T %Z")
seconds_ca_expiration_date=$(TZ=$ca_zone $date_cmd -j -z "Europe/Paris" "$posix_ca_expiration_date" +"%s")
test_cert_expiration $seconds_cert_expiration_date
test_ca_expiration $seconds_ca_expiration_date
# If neither Linux nor BSD
else
echo "CRITICAL - OS not supported"
STATE=$STATE_CRITICAL
exit $STATE
fi
# Display the first one that expires first
if [ $CA_STATE -gt $CERT_STATE ]; then
echo $CA_ECHO
echo $CERT_ECHO
exit $CA_STATE
elif [ $CERT_STATE -gt $CA_STATE ]; then
echo $CERT_ECHO
echo $CA_ECHO
exit $CERT_STATE
else
echo $CERT_ECHO
echo $CA_ECHO
exit $CERT_STATE
fi

1
roles/openvpn/files/shellpki
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@ -1 +0,0 @@
../../../../shellpki

1
roles/openvpn/files/sudo_shellpki
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@ -1 +0,0 @@
%shellpki ALL = (root) /usr/local/sbin/shellpki

5
roles/openvpn/handlers/main.yml
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@ -1,5 +0,0 @@
---
- name: restart openvpn
service:
name: openvpn
state: restarted

136
roles/openvpn/tasks/main.yml
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@ -1,136 +0,0 @@
---
- name: Install OpenVPN package
openbsd_pkg:
name: "openvpn--"
tags:
- openvpn
- name: Create /etc/openvpn directory
file:
path: /etc/openvpn
state: directory
owner: "root"
group: "wheel"
mode: "0755"
tags:
- openvpn
- name: Deploy OpenVPN configuration
template:
src: "server.conf.j2"
dest: "/etc/openvpn/server.conf"
mode: "0600"
notify: restart openvpn
tags:
- openvpn
- name: Enabling OpenVPN
service:
name: openvpn
enabled: true
tags:
- openvpn
- name: Set OpenVPN flag
shell: 'rcctl set openvpn flags "--config /etc/openvpn/server.conf"'
tags:
- openvpn
- name: Create shellpki user
user:
name: "_shellpki"
system: true
state: present
home: "/etc/shellpki/"
shell: "/sbin/nologin"
tags:
- openvpn
- name: Copy some shellpki files
copy:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
owner: root
group: wheel
mode: "{{ item.mode }}"
force: true
with_items:
- src: 'files/shellpki/openssl.cnf'
dest: '/etc/shellpki/openssl.cnf'
mode: '0640'
- src: 'files/shellpki/shellpki'
dest: '/usr/local/sbin/shellpki'
mode: '0755'
tags:
- openvpn
- name: Deploy DH PARAMETERS
template:
src: "dh2048.pem.j2"
dest: "/etc/shellpki/dh2048.pem"
mode: "0600"
tags:
- openvpn
- name: Create /etc/sudoers.d directory
file:
path: /etc/sudoers.d
state: directory
owner: "root"
group: "wheel"
mode: "0755"
tags:
- openvpn
- name: Include /etc/sudoers.d in sudoers configuration file
lineinfile:
path: /etc/sudoers
line: '#includedir /etc/sudoers.d'
tags:
- openvpn
- name: Verify shellpki sudoers file presence
copy:
src: "sudo_shellpki"
dest: "/etc/sudoers.d/shellpki"
force: true
mode: "0440"
validate: '/usr/local/sbin/visudo -cf %s'
tags:
- openvpn
- name: Copy check_openvpn
copy:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
owner: root
group: wheel
mode: "{{ item.mode }}"
force: true
with_items:
- src: 'files/check_openvpn.pl'
dest: '/usr/local/libexec/nagios/plugins/check_openvpn.pl'
mode: '0755'
tags:
- openvpn
- name: Install needed package for check_openvpn
openbsd_pkg:
name: "p5-Net-Telnet"
tags:
- openvpn
- name: Copy check_openvpn_certificates.sh
copy:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
owner: root
group: wheel
mode: "{{ item.mode }}"
force: true
with_items:
- src: 'files/check_openvpn_certificates.sh'
dest: '/usr/local/libexec/nagios/plugins/check_openvpn_certificates.sh'
mode: '0755'
tags:
- openvpn

8
roles/openvpn/templates/dh2048.pem.j2
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@ -1,8 +0,0 @@
-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEAuimweC/f5W/AIIFhLX256Bi5IU+AkN9sKZ9sxGx0xc3J8NwIBnEP
R/2RgclJqJ8OodY70zeDHNLDyc01crGvihuupiWVlvQxS4osdhfdM+GoV9pcmCVr
TRTybsUPkkm4rQ/SC7I2MxiYnXwDrrYnpMvBDaRZjoHlgTKjOGoYSd+DIDZSFKkv
ASkXQkIC9FpvjnxfW5gtzzm6NheqgYUI2Y2QiqM6BmGVZiPcqyUpbWvRCcZLoPa2
Z+FV9LxE4J7CX0ilTJXXhs3RaMlG8qZha3l0hEL4SAZp5xn74Ej/9hA5cWqnKEOQ
aLfwADI4rPe9uTu9Qnw87DgM2tQeETBlmwIBAg==
-----END DH PARAMETERS-----

26
roles/openvpn/templates/server.conf.j2
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@ -1,26 +0,0 @@
user nobody
group nogroup
local {{ ansible_default_ipv4.address }}
port 1194
proto udp
dev tun
mode server
keepalive 10 120
cipher AES-128-CBC # AES
#comp-lzo
# compress (à partir d'OpenVPN 2.4)
persist-key
persist-tun
status /var/log/openvpn-status.log
log-append /var/log/openvpn.log
ca /etc/shellpki/cacert.pem
cert /etc/shellpki/certs/{{ ansible_fqdn }}.crt
key /etc/shellpki/private/{{ ansible_fqdn }}.key
dh /etc/shellpki/dh2048.pem
server {{ openvpn_lan }} {{ openvpn_netmask }}