[feat] Reorganize code

Let's use a more structured folder system:
https://github.com/golang-standards/project-layout

- Resolves: #99

1 files changed, 97 insertions, 0 deletions

diff --git a/pkg/standalone/launcher.go b/pkg/standalone/launcher.go
new file mode 100644
index 0000000..4dc4761
--- /dev/null
+++ b/pkg/standalone/launcher.go
@@ -0,0 +1,97 @@
+// +build !linux
+// Copyright (C) 2018 LEAP
+//
+// 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 standalone
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+)
+
+const (
+	helperAddr = "http://localhost:7171"
+)
+
+type launcher struct {
+}
+
+func newLauncher() (*launcher, error) {
+	return &launcher{}, nil
+}
+
+func (l *launcher) close() error {
+	return nil
+}
+
+func (l *launcher) openvpnStart(flags ...string) error {
+	byteFlags, err := json.Marshal(flags)
+	if err != nil {
+		return err
+	}
+	return l.send("/openvpn/start", byteFlags)
+}
+
+func (l *launcher) openvpnStop() error {
+	return l.send("/openvpn/stop", nil)
+}
+
+func (l *launcher) firewallStart(gateways []gateway) error {
+	ipList := make([]string, len(gateways))
+	for i, gw := range gateways {
+		ipList[i] = gw.IPAddress
+	}
+	byteIPs, err := json.Marshal(ipList)
+	if err != nil {
+		return err
+	}
+	return l.send("/firewall/start", byteIPs)
+}
+
+func (l *launcher) firewallStop() error {
+	return l.send("/firewall/stop", nil)
+}
+
+func (l *launcher) firewallIsUp() bool {
+	res, err := http.Post(helperAddr+"/firewall/isup", "", nil)
+	if err != nil {
+		return false
+	}
+	defer res.Body.Close()
+
+	return res.StatusCode == http.StatusOK
+}
+
+func (l *launcher) send(path string, body []byte) error {
+	var reader io.Reader
+	if body != nil {
+		reader = bytes.NewReader(body)
+	}
+	res, err := http.Post(helperAddr+path, "", reader)
+	if err != nil {
+		return err
+	}
+	defer res.Body.Close()
+
+	resErr, err := ioutil.ReadAll(res.Body)
+	if len(resErr) > 0 {
+		return fmt.Errorf("Helper returned an error: %q", resErr)
+	}
+	return err
+}