[refactor] copy over systray to new package

- delete gtk systray module

4 files changed, 332 insertions, 0 deletions

diff --git a/pkg/systray2/config.go b/pkg/systray2/config.go
new file mode 100644
index 0000000..75a4a98
--- /dev/null
+++ b/pkg/systray2/config.go
@@ -0,0 +1,108 @@
+// 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 systray
+
+import (
+	"encoding/json"
+	"os"
+	"path"
+	"time"
+
+	"0xacab.org/leap/bitmask-vpn/pkg/config"
+	"golang.org/x/text/message"
+)
+
+const (
+	oneDay   = time.Hour * 24
+	oneMonth = oneDay * 30
+)
+
+var (
+	configPath = path.Join(config.Path, "systray.json")
+)
+
+// Config holds the configuration of the systray
+type Config struct {
+	file struct {
+		LastNotification  time.Time
+		Donated           time.Time
+		SelectGateway     bool
+		Obfs4             bool
+		UserStoppedVPN    bool
+		DisableAustostart bool
+	}
+	SelectGateway     bool
+	Obfs4             bool
+	DisableAustostart bool
+	StartVPN          bool
+	Version           string
+	Printer           *message.Printer
+}
+
+// ParseConfig reads the configuration from the configuration file
+func ParseConfig() *Config {
+	var conf Config
+
+	f, err := os.Open(configPath)
+	if err != nil {
+		conf.save()
+	} else {
+		defer f.Close()
+		dec := json.NewDecoder(f)
+		err = dec.Decode(&conf.file)
+	}
+
+	conf.SelectGateway = conf.file.SelectGateway
+	conf.Obfs4 = conf.file.Obfs4
+	conf.DisableAustostart = conf.file.DisableAustostart
+	conf.StartVPN = !conf.file.UserStoppedVPN
+	return &conf
+}
+
+func (c *Config) setUserStoppedVPN(vpnStopped bool) error {
+	c.file.UserStoppedVPN = vpnStopped
+	return c.save()
+}
+
+func (c *Config) hasDonated() bool {
+	return c.file.Donated.Add(oneMonth).After(time.Now())
+}
+
+func (c *Config) needsNotification() bool {
+	return !c.hasDonated() && c.file.LastNotification.Add(oneDay).Before(time.Now())
+}
+
+func (c *Config) setNotification() error {
+	c.file.LastNotification = time.Now()
+	return c.save()
+}
+
+func (c *Config) setDonated() error {
+	c.file.Donated = time.Now()
+	return c.save()
+}
+
+func (c *Config) save() error {
+	f, err := os.Create(configPath)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	enc := json.NewEncoder(f)
+	enc.SetIndent("", "  ")
+	return enc.Encode(c.file)
+}
diff --git a/pkg/systray2/pid.go b/pkg/systray2/pid.go
new file mode 100644
index 0000000..b898d4e
--- /dev/null
+++ b/pkg/systray2/pid.go
@@ -0,0 +1,99 @@
+package systray
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"0xacab.org/leap/bitmask-vpn/pkg/config"
+	"github.com/keybase/go-ps"
+)
+
+var pidFile = filepath.Join(config.Path, "systray.pid")
+
+func acquirePID() error {
+	pid := syscall.Getpid()
+	current, err := getPID()
+	if err != nil {
+		return err
+	}
+
+	if current != pid && pidRunning(current) {
+		return fmt.Errorf("Another systray is running with pid: %d", current)
+	}
+
+	return setPID(pid)
+}
+
+func releasePID() error {
+	pid := syscall.Getpid()
+	current, err := getPID()
+	if err != nil {
+		return err
+	}
+	if current != 0 && current != pid {
+		return fmt.Errorf("Can't release pid file, is not own by this process")
+	}
+
+	if current == pid {
+		return os.Remove(pidFile)
+	}
+	return nil
+}
+
+func getPID() (int, error) {
+	_, err := os.Stat(pidFile)
+	if os.IsNotExist(err) {
+		return 0, nil
+	}
+	if err != nil {
+		return 0, err
+	}
+
+	file, err := os.Open(pidFile)
+	if err != nil {
+		return 0, err
+	}
+	defer file.Close()
+
+	b, err := ioutil.ReadAll(file)
+	if err != nil {
+		return 0, err
+	}
+	if len(b) == 0 {
+		return 0, nil
+	}
+	return strconv.Atoi(string(b))
+}
+
+func setPID(pid int) error {
+	file, err := os.Create(pidFile)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	_, err = file.WriteString(fmt.Sprintf("%d", pid))
+	return err
+}
+
+func pidRunning(pid int) bool {
+	if pid == 0 {
+		return false
+	}
+	proc, err := ps.FindProcess(pid)
+	if err != nil {
+		log.Printf("An error ocurred finding process: %v", err)
+		return false
+	}
+	if proc == nil {
+		return false
+	}
+	log.Printf("There is a running process with the pid %d and executable: %s", pid, proc.Executable())
+	return strings.Contains(os.Args[0], proc.Executable())
+}
diff --git a/pkg/systray2/pid_test.go b/pkg/systray2/pid_test.go
new file mode 100644
index 0000000..dda8384
--- /dev/null
+++ b/pkg/systray2/pid_test.go
@@ -0,0 +1,21 @@
+package systray
+
+import (
+	"syscall"
+	"testing"
+)
+
+const (
+	invalidPid = 345678
+)
+
+func TestPidRunning(t *testing.T) {
+	pid := syscall.Getpid()
+	if !pidRunning(pid) {
+		t.Errorf("pid %v is not running", pid)
+	}
+
+	if pidRunning(invalidPid) {
+		t.Errorf("pid %v is running", invalidPid)
+	}
+}
diff --git a/pkg/systray2/run.go b/pkg/systray2/run.go
new file mode 100644
index 0000000..937fb58
--- /dev/null
+++ b/pkg/systray2/run.go
@@ -0,0 +1,104 @@
+// 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 systray
+
+import (
+	"log"
+	"os"
+
+	"0xacab.org/leap/bitmask-vpn/pkg/bitmask"
+	"0xacab.org/leap/bitmask-vpn/pkg/config"
+)
+
+func initialize(conf *Config, bt *bmTray, finishedCh chan bool) {
+	defer func() { finishedCh <- true }()
+	if _, err := os.Stat(config.Path); os.IsNotExist(err) {
+		os.MkdirAll(config.Path, os.ModePerm)
+	}
+
+	err := acquirePID()
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer releasePID()
+
+	b, err := bitmask.Init(conf.Printer)
+	if err != nil {
+		// TODO notify failure
+		return
+	}
+	defer b.Close()
+	go checkAndStartBitmask(b, conf)
+	go listenSignals(b)
+
+	var as bitmask.Autostart
+	if conf.DisableAustostart {
+		as = &bitmask.DummyAutostart{}
+	} else {
+		as = bitmask.NewAutostart(config.ApplicationName, "")
+	}
+	err = as.Enable()
+	if err != nil {
+		log.Printf("Error enabling autostart: %v", err)
+	}
+}
+
+func checkAndStartBitmask(b bitmask.Bitmask, conf *Config) {
+	if conf.Obfs4 {
+		err := b.UseTransport("obfs4")
+		if err != nil {
+			log.Printf("Error setting transport: %v", err)
+		}
+	}
+	err := checkAndInstallHelpers(b)
+	if err != nil {
+		log.Printf("Is bitmask running? %v", err)
+		os.Exit(1)
+	}
+	err = maybeStartVPN(b, conf)
+	if err != nil {
+		log.Println("Error starting VPN: ", err)
+	}
+}
+
+func checkAndInstallHelpers(b bitmask.Bitmask) error {
+	helpers, priviledge, err := b.VPNCheck()
+	if (err != nil && err.Error() == "nopolkit") || (err == nil && !priviledge) {
+		log.Printf("No polkit found")
+		os.Exit(1)
+	} else if err != nil {
+		log.Printf("Error checking vpn: %v", err)
+		return err
+	}
+
+	if !helpers {
+		err = b.InstallHelpers()
+		if err != nil {
+			log.Println("Error installing helpers: ", err)
+		}
+	}
+	return nil
+}
+
+func maybeStartVPN(b bitmask.Bitmask, conf *Config) error {
+	if !conf.StartVPN {
+		return nil
+	}
+
+	err := b.StartVPN(config.Provider)
+	conf.setUserStoppedVPN(false)
+	return err
+}