mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager
synced 2024-07-23 03:04:18 +00:00
contrib/scripts: nm-import-openvpn - script for importing OpenVPN configs to NM
Synopsis: $ nm-import-openvpn -i <infile1> <infile2> ... $ nm-import-openvpn <infile> <outfile> Put the file to NetworkManager: # cp <outfile> /etc/NetworkManager/system-connections/ # chmod 600 /etc/NetworkManager/system-connections/<outfile> # nmcli con load /etc/NetworkManager/system-connections/<outfile>
This commit is contained in:
Jiří Klimeš
parent
1af8e2f132
commit
1a2798d1a4
394
contrib/scripts/nm-import-openvpn
Executable file
394
contrib/scripts/nm-import-openvpn
Executable file
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#!/usr/bin/env lua
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-- -*- Mode: Lua; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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-- vim: ft=lua ts=2 sts=2 sw=2 et ai
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 2 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License along
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-- with this program; if not, write to the Free Software Foundation, Inc.,
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-- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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--
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-- Copyright 2015 Red Hat, Inc.
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--
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--
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-- Script for importing/converting OpenVPN configuration files for NetworkManager
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-- In general, the implementation follows the logic of import() from
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-- https://git.gnome.org/browse/network-manager-openvpn/tree/properties/import-export.c
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--
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----------------------
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-- Helper functions --
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----------------------
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function read_all(in_file)
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local f, msg = io.open(in_file, "r")
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if not f then return nil, msg; end
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local content = f:read("*all")
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f:close()
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return content
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end
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function uuid()
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math.randomseed(os.time())
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local template ='xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
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local uuid = string.gsub(template, '[xy]', function (c)
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local v = (c == 'x') and math.random(0, 0xf) or math.random(8, 0xb)
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return string.format('%x', v)
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end)
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return uuid
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end
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function unquote(str)
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return (string.gsub(str, "^([\"\'])(.*)%1$", "%2"))
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end
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function vpn_settings_to_text(vpn_settings)
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local t = {}
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for k,v in pairs(vpn_settings) do
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t[#t+1] = k.."="..v
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end
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return table.concat(t, "\n")
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end
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function usage()
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local basename = string.match(arg[0], '[^/\\]+$') or arg[0]
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print(basename .. " - convert/import OpenVPN configuration to NetworkManager")
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print("Usage:")
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print(" " .. basename .. " <input-file> <output-file>")
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print(" - converts OpenVPN config to NetworkManager keyfile")
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print("")
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print(" " .. basename .. " --import <input-file1> <input-file2> ...")
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print(" - imports OpenVPN config(s) to NetworkManager")
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os.exit(1)
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end
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-------------------------------------------
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-- Functions for VPN options translation --
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-------------------------------------------
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function set_bool(t, option, value)
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g_switches[value[1]] = true
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end
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function handle_yes(t, option, value)
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t[option] = "yes"
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end
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function handle_generic(t, option, value)
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if not value[2] then io.stderr:write(string.format("Warning: ignoring invalid option '%s'\n", value[1])) end
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t[option] = value[2]
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end
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function handle_proto(t, option, value)
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if not value[2] then io.stderr:write("Warning: ignoring invalid option 'proto'\n") end
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if value[2] == "tcp" or value[3] == "tcp-client" or value[2] == "tcp-server" then
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t[option] = "yes"
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end
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end
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--[[
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function handle_dev_old(t, option, value)
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if not value[2] then io.stderr:write(string.format("Warning: ignoring invalid option '%s'\n", value[1])) end
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if value[2] == "tap" then
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t[option] = "yes"
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end
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end
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--]]
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function handle_dev_type(t, option, value)
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if value[2] ~= "tun" and value[2] ~= "tap" then
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io.stderr:write(string.format("Warning: ignoring invalid option '%s'\n", value[1]))
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end
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t[option] = value[2]
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end
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function handle_remote(t, option, value)
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if not value[2] then io.stderr:write("Warning: ignoring invalid option 'remote'\n") end
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t[option[1]] = value[2]
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if tonumber(value[3]) then
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t[option[2]] = value[3]
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end
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g_switches[value[1]] = true
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end
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function handle_port(t, option, value)
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-- Port value from 'remote' option takes precedence. So if port is already set
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-- do not overwrite it
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if t[option] then return end
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if tonumber(value[2]) then
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t[option] = value[2]
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end
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end
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function handle_proxy(t, option, value)
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if not value[2] then io.stderr:write(string.format("Warning: ignoring invalid option '%s'\n", value[1])) end
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if value[4] then io.stderr:write(string.format("Warning: the third argument of '%s' is not supported yet\n", value[1])) end
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t[option[1]] = string.gsub(value[1], "-proxy", "")
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t[option[2]] = value[2]
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t[option[3]] = value[3]
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end
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function handle_ifconfig(t, option, value)
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if not (value[2] and value[3]) then io.stderr:write("Warning: ignoring invalid option 'ifconfig'\n") end
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t[option[1]] = value[2]
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t[option[2]] = value[3]
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end
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function handle_path(t, option, value)
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if value[1] == "pkcs12" then
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t["ca"] = value[2]
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t["cert"] = value[2]
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t["key"] = value[2]
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else
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t[option] = value[2]
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end
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end
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function handle_secret(t, option, value)
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t[option[1]] = value[2]
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t[option[2]] = value[3]
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g_switches[value[1]]= true
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end
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function handle_tls_remote(t, option, value)
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t[option] = unquote(value[2])
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end
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function handle_remote_cert_tls(t, option, value)
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if value[2] ~= "client" and value[2] ~= "server" then
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io.stderr:write(string.format("Warning: ignoring invalid option '%s'\n", value[1]))
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end
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t[option] = value[2]
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end
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-- global variables
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g_vpn_data = {}
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g_switches = {}
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vpn2nm = {
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["auth"] = { nm_opt="auth", func=handle_generic },
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["auth-user-pass"] = { nm_opt="auth-user-pass", func=set_bool },
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["ca"] = { nm_opt="ca", func=handle_path },
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["cert"] = { nm_opt="cert", func=handle_path },
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["cipher"] = { nm_opt="cipher", func=handle_generic },
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["keysize"] = { nm_opt="keysize", func=handle_generic },
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["client"] = { nm_opt="client", func=set_bool },
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["comp-lzo"] = { nm_opt="comp-lzo", func=handle_yes },
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-- ["dev"] = { nm_opt="tap-dev", func=handle_dev_old },
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["dev"] = { nm_opt="dev", func=handle_generic },
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["dev-type"] = { nm_opt="dev-type", func=handle_dev_type },
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["fragment"] = { nm_opt="fragment-size", func=handle_generic },
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["ifconfig"] = { nm_opt={"local-ip", "remote-ip"}, func=handle_ifconfig },
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["key"] = { nm_opt="key", func=handle_path },
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["mssfix"] = { nm_opt="mssfix", func=handle_yes },
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["pkcs12"] = { nm_opt="client", func=handle_path },
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["port"] = { nm_opt="port", func=handle_port },
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["proto"] = { nm_opt="proto-tcp", func=handle_proto },
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["http-proxy"] = { nm_opt={"proxy-type", "proxy-server", "proxy-port"}, func=handle_proxy },
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["http-proxy-retry"] = { nm_opt="proxy-retry", func=handle_yes },
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["socks-proxy"] = { nm_opt={"proxy-type", "proxy-server", "proxy-port"}, func=handle_proxy },
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["socks-proxy-retry"] = { nm_opt="proxy-retry", func=handle_yes },
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["remote"] = { nm_opt={"remote", "port"}, func=handle_remote },
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["reneg-sec"] = { nm_opt="reneg-seconds", func=handle_generic },
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["rport"] = { nm_opt="port", func=handle_port },
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["secret"] = { nm_opt={"static-key", "static-key-direction"}, func=handle_secret },
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["tls-auth"] = { nm_opt={"ta", "ta-dir"}, func=handle_secret },
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["tls-client"] = { nm_opt="tls-client=", func=set_bool },
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["tls-remote"] = { nm_opt="tls-remote", func=handle_tls_remote },
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["remote-cert-tls"] = { nm_opt="remote-cert-tls", func=handle_remote_cert_tls },
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["tun-mtu"] = { nm_opt="tunnel-mtu", func=handle_generic }
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}
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------------------------------------------------------------
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-- Read and convert the config into the global g_vpn_data --
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-----------------------------------------------------------
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function read_and_convert(in_file)
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local function line_split(str)
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t={}; i = 1
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for str in str:gmatch("%S+") do
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t[i] = str
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i = i + 1
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end
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return t
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end
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in_text, msg = read_all(in_file)
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if not in_text then return false, msg end
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-- loop through the config and convert it
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for line in in_text:gmatch("[^\r\n]+") do
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repeat
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-- skip comments and empty lines
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if line:find("^%s*[#;]") or line:find("^%s*$") then break end
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-- trim leading and trailing spaces
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line = line:find("^%s*$") and "" or line:match("^%s*(.*%S)")
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local words = line_split(line)
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local val = vpn2nm[words[1]]
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if val then
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if type(val) == "table" then val.func(g_vpn_data, val.nm_opt, words)
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else print(string.format("debug: '%s' : val=%s"..val)) end
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end
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until true
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end
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-- check some inter-option dependencies
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if not g_switches["client"] and not g_switches["secret"] then
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local msg = in_file .. ": Not a valid OpenVPN client configuration"
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return false, msg
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end
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if not g_switches["remote"] then
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local msg = in_file .. ": Not a valid OpenVPN configuration (no remote)"
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return false, msg
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end
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-- set 'connection-type'
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g_vpn_data["connection-type"] = "tls"
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have_sk = g_switches["secret"] ~= nil
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have_ca = g_vpn_data["ca"] ~= nil
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have_certs = ve_ca and g_vpn_data["cert"] and g_vpn_data["key"]
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if g_switches["auth-user-pass"] then
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if have_certs then
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g_vpn_data["connection-type"] = "password-tls"
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elseif have_ca then
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g_vpn_data["connection-type"] = "tls"
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end
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elseif have_certs then g_vpn_data["connection-type"] = "tls"
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elseif have_sk then g_vpn_data["connection-type"] = "static-key"
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end
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return true
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end
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--------------------------------------------------------
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-- Create and write connection file in keyfile format --
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--------------------------------------------------------
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function write_vpn_to_keyfile(in_file, out_file)
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connection = [[
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[connection]
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id=__NAME_PLACEHOLDER__
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uuid=__UUID_PLACEHOLDER__
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type=vpn
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autoconnect=no
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[ipv4]
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method=auto
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never-default=true
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[ipv6]
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method=auto
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[vpn]
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service-type=org.freedesktop.NetworkManager.openvpn
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]]
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connection = connection .. vpn_settings_to_text(g_vpn_data)
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connection = string.gsub(connection, "__NAME_PLACEHOLDER__", (out_file:gsub(".*/", "")))
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connection = string.gsub(connection, "__UUID_PLACEHOLDER__", uuid())
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-- write output file
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local f, err = io.open(out_file, "w")
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if not f then io.stderr:write(err) return false end
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f:write(connection)
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f:close()
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local ofname = out_file:gsub(".*/", "")
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io.stderr:write("Successfully converted VPN configuration: " .. in_file .. " => " .. out_file .. "\n")
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io.stderr:write("To use the connection, do:\n")
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io.stderr:write("# cp " .. out_file .. " /etc/NetworkManager/system-connections\n")
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io.stderr:write("# chmod 600 /etc/NetworkManager/system-connections/" .. ofname .. "\n")
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io.stderr:write("# nmcli con load /etc/NetworkManager/system-connections/" .. ofname .. "\n")
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return true
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end
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---------------------------------------------
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-- Import VPN connection to NetworkManager --
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---------------------------------------------
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function import_vpn_to_NM(filename)
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local lgi = require 'lgi'
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local GLib = lgi.GLib
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local NM = lgi.NM
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-- function creating NMConnection
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local function create_profile(name)
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local profile = NM.SimpleConnection.new()
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s_con = NM.SettingConnection.new()
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s_vpn = NM.SettingVpn.new()
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s_con[NM.SETTING_CONNECTION_ID] = name
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s_con[NM.SETTING_CONNECTION_UUID] = uuid()
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s_con[NM.SETTING_CONNECTION_TYPE] = "vpn"
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s_vpn[NM.SETTING_VPN_SERVICE_TYPE] = "org.freedesktop.NetworkManager.openvpn"
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for k,v in pairs(g_vpn_data) do
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s_vpn:add_data_item(k, v)
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end
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profile:add_setting(s_con)
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profile:add_setting(s_vpn)
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return profile
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end
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-- callback function for add_connection()
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local function added_cb(client, result, data)
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local con,err,code = client:add_connection_finish(result)
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if con then
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print(string.format("%s: Imported to NetworkManager: %s - %s",
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filename, con:get_uuid(), con:get_id()))
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else
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io.stderr:write(code .. ": " .. err .. "\n");
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return false
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end
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main_loop:quit()
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end
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local profile_name = string.match(filename, '[^/\\]+$') or filename
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main_loop = GLib.MainLoop(nil, false)
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local con = create_profile(profile_name)
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local client = NM.Client.new()
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-- send the connection to NetworkManager
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client:add_connection_async(con, true, nil, added_cb, nil)
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-- run main loop so that the callback could be called
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main_loop:run()
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return true
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end
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---------------------------
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-- Main code starts here --
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---------------------------
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local import_mode = false
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local infile, outfile
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-- parse command-line arguments
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if not arg[1] or arg[1] == "--help" or arg[1] == "-h" then usage() end
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if arg[1] == "--import" or arg[1] == "-i" then
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infile = arg[2]
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if not infile then usage() end
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import_mode = true
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else
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infile = arg[1]
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outfile = arg[2]
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if not infile or not outfile then usage() end
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if arg[3] then usage() end
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end
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if import_mode then
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-- check if lgi is available
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local success,msg = pcall(require, 'lgi')
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if not success then
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io.stderr:write("Lua lgi module is not available, please install it (usually lua-lgi package)\n")
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-- print(msg)
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os.exit(1)
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end
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-- read configs, convert them and import to NM
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for i = 2, #arg do
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ok, err_msg = read_and_convert(arg[i])
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if ok then import_vpn_to_NM(arg[i])
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else io.stderr:write(err_msg .. "\n") end
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-- reset global vars
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g_vpn_data = {}
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g_switches = {}
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end
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else
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-- read configs, convert them and write as NM keyfile connection
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ok, err_msg = read_and_convert(infile)
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if ok then write_vpn_to_keyfile(infile, outfile)
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else io.stderr:write(err_msg .. "\n") end
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end
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