Improve TAP

[govpn.git] / src / cypherpunks.ru / govpn / tap_darwin.go

diff --git a/src/cypherpunks.ru/govpn/tap_darwin.go b/src/cypherpunks.ru/govpn/tap_darwin.go
new file mode 100644 (file)
index 0000000..cbb0212
--- /dev/null
+++ b/src/cypherpunks.ru/govpn/tap_darwin.go
@@ -0,0 +1,38 @@
+/*
+GoVPN -- simple secure free software virtual private network daemon
+Copyright (C) 2014-2016 Sergey Matveev <stargrave@stargrave.org>
+
+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/>.
+*/
+
+package govpn
+
+import (
+       "io"
+       "strings"
+
+       "github.com/pkg/errors"
+       "github.com/songgao/water"
+)
+
+func newTAPer(ifaceName string) (io.ReadWriteCloser, error) {
+       if !strings.HasPrefix(ifaceName, interfaceTun) {
+               return nil, errors.Wrap(errUnsupportedInterface, ifaceName)
+       }
+       if ifaceName != interfaceTun {
+               return nil, errors.Errorf("Darwin don't allow to set an interface name, only %q is supported", ifaceName)
+       }
+       output, err := water.New(water.Config{DeviceType: water.TUN})
+       return output, errors.Wrap(err, "water.New")
+}