2 GoVPN -- simple secure free software virtual private network daemon
3 Copyright (C) 2014-2016 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
32 RefreshRate = time.Minute
36 confs map[govpn.PeerId]*govpn.PeerConf
37 idsCache *govpn.CipherCache
40 func confRead() (*map[govpn.PeerId]*govpn.PeerConf, error) {
41 data, err := ioutil.ReadFile(*confPath)
45 confsRaw := new(map[string]govpn.PeerConf)
46 err = json.Unmarshal(data, confsRaw)
51 confs := make(map[govpn.PeerId]*govpn.PeerConf, len(*confsRaw))
52 for name, pc := range *confsRaw {
53 verifier, err := govpn.VerifierFromString(pc.VerifierRaw)
55 return nil, errors.New("Unable to decode verifier: " + err.Error())
61 pc.MTU = govpn.MTUDefault
63 if pc.MTU > govpn.MTUMax {
64 log.Println("MTU value", pc.MTU, "is too high, overriding to", govpn.MTUMax)
67 conf := govpn.PeerConf{
79 if pc.TimeoutInt <= 0 {
80 pc.TimeoutInt = govpn.TimeoutDefault
82 conf.Timeout = time.Second * time.Duration(pc.TimeoutInt)
83 confs[*verifier.Id] = &conf
88 func confRefresh() error {
89 newConfs, err := confRead()
91 log.Println("Unable to parse peers configuration:", err)
95 ids := make([]govpn.PeerId, 0, len(confs))
96 for peerId, _ := range confs {
97 ids = append(ids, peerId)
104 idsCache = govpn.NewCipherCache(nil)
105 if err := confRefresh(); err != nil {
110 time.Sleep(RefreshRate)