clear disconnected openvpn3 sessions

clear-openvpn3-sessions.rb

#!/usr/bin/env ruby

require 'active_support/all'

class Session
	FIELDS = [:path, :created, :pid, :owner, :device, :config_name, :session_name, :status]
	@@sessions = []

	attr_accessor(*FIELDS)
	attr_accessor :id

	@fields = {}

	def initialize(section)
		@@sessions << self
		@fields = {}
		lines = section.split("\n").delete_if {|line| line.start_with?('---')}
		lines.each do |line|
			process_string(nil, line)
		end
		@id = @fields[:path].match(/\w*$/)[0]
		# p @fields
	end

	def field_regex(field)
		/\s*#{field.to_s.gsub('_', ' ')}:\s*/i
	end

	def process_string(parent, str, right = true)
		return unless str&.strip
		found = false
		Session::FIELDS.each do |field|
			regex = field_regex(field)
			if str =~ regex
				parts = str.split(regex)
				found = true
				process_string(field, parts[0], false)
				process_string(field, parts[1], true)
				break
			end
		end
		if !found && parent && right
			@fields[parent] = str
			# p "this is #{parent} = #{str}"
		end
	end

	def connected?
		@fields[:status].include?('connected')
	end

	def disconnect
		`openvpn3 session-manage --session-path #{@fields[:path]} --disconnect`
		p "#{@id} disconnected"
	end

	def self.sessions
		@@sessions
	end

	def self.clear
		@@sessions.each do |session|
			session.disconnect unless session.connected?
		end
	end

	def self.get_list
		`openvpn3 sessions-list`.split("\n\n").map{ |section| Session.new(section) }
	end
end

Session.get_list
Session.clear