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tray.go
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tray.go
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package main
import (
"flag"
"os/exec"
"path/filepath"
"runtime"
"strings"
"sync"
"time"
"fyne.io/systray"
"github.com/safing/portbase/log"
icons "github.com/safing/portmaster/assets"
)
const (
shortenStatusMsgTo = 40
)
var (
trayLock sync.Mutex
scaleColoredIconsTo int
activeIconID int = -1
activeStatusMsg = ""
activeSPNStatus = ""
activeSPNSwitch = ""
menuItemStatusMsg *systray.MenuItem
menuItemSPNStatus *systray.MenuItem
menuItemSPNSwitch *systray.MenuItem
)
func init() {
flag.IntVar(&scaleColoredIconsTo, "scale-icons", 32, "scale colored icons to given size in pixels")
// lock until ready
trayLock.Lock()
}
func tray() {
if scaleColoredIconsTo > 0 {
icons.ScaleColoredIconsTo(scaleColoredIconsTo)
}
systray.Run(onReady, onExit)
}
func exitTray() {
systray.Quit()
}
func onReady() {
// unlock when ready
defer trayLock.Unlock()
// icon
systray.SetIcon(icons.ColoredIcons[icons.RedID])
if runtime.GOOS == "windows" {
// systray.SetTitle("Portmaster Notifier") // Don't set title, as it may be displayed in full in the menu/tray bar. (Ubuntu)
systray.SetTooltip("Portmaster Notifier")
}
// menu: open app
if dataDir != "" {
menuItemOpenApp := systray.AddMenuItem("Open App", "")
go clickListener(menuItemOpenApp, launchApp)
systray.AddSeparator()
}
// menu: status
menuItemStatusMsg = systray.AddMenuItem("Loading...", "")
menuItemStatusMsg.Disable()
systray.AddSeparator()
// menu: SPN
menuItemSPNStatus = systray.AddMenuItem("Loading...", "")
menuItemSPNStatus.Disable()
menuItemSPNSwitch = systray.AddMenuItem("Loading...", "")
go clickListener(menuItemSPNSwitch, func() {
ToggleSPN()
})
systray.AddSeparator()
// menu: quit
systray.AddSeparator()
closeTray := systray.AddMenuItem("Close Tray Notifier", "")
go clickListener(closeTray, func() {
cancelMainCtx()
})
shutdownPortmaster := systray.AddMenuItem("Shut Down Portmaster", "")
go clickListener(shutdownPortmaster, func() {
_ = TriggerShutdown()
time.Sleep(1 * time.Second)
cancelMainCtx()
})
}
func onExit() {
}
func triggerTrayUpdate() {
// TODO: Deduplicate triggers.
go updateTray()
}
// updateTray update the state of the tray depending on the currently available information.
func updateTray() {
// Get current information.
spnStatus := GetSPNStatus()
failureID, failureMsg := GetFailure()
trayLock.Lock()
defer trayLock.Unlock()
// Select icon and status message to show.
newIconID := icons.GreenID
newStatusMsg := "Secure"
switch {
case shuttingDown.IsSet():
newIconID = icons.RedID
newStatusMsg = "Shutting Down Portmaster"
case restarting.IsSet():
newIconID = icons.YellowID
newStatusMsg = "Restarting Portmaster"
case !connected.IsSet():
newIconID = icons.RedID
newStatusMsg = "Waiting for Portmaster Core Service"
case failureID == FailureError:
newIconID = icons.RedID
newStatusMsg = failureMsg
case failureID == FailureWarning:
newIconID = icons.YellowID
newStatusMsg = failureMsg
case spnEnabled.IsSet():
newIconID = icons.BlueID
}
// Set icon if changed.
if newIconID != activeIconID {
activeIconID = newIconID
systray.SetIcon(icons.ColoredIcons[activeIconID])
}
// Set message if changed.
if newStatusMsg != activeStatusMsg {
activeStatusMsg = newStatusMsg
// Shorten message if too long.
shortenedMsg := activeStatusMsg
if len(shortenedMsg) > shortenStatusMsgTo && strings.Contains(shortenedMsg, ". ") {
shortenedMsg = strings.SplitN(shortenedMsg, ". ", 2)[0]
}
if len(shortenedMsg) > shortenStatusMsgTo {
shortenedMsg = shortenedMsg[:shortenStatusMsgTo] + "..."
}
menuItemStatusMsg.SetTitle("Status: " + shortenedMsg)
}
// Set SPN status if changed.
if spnStatus != nil && activeSPNStatus != spnStatus.Status {
activeSPNStatus = spnStatus.Status
menuItemSPNStatus.SetTitle("SPN: " + strings.Title(activeSPNStatus)) // nolint:staticcheck
}
// Set SPN switch if changed.
newSPNSwitch := "Enable SPN"
if spnEnabled.IsSet() {
newSPNSwitch = "Disable SPN"
}
if activeSPNSwitch != newSPNSwitch {
activeSPNSwitch = newSPNSwitch
menuItemSPNSwitch.SetTitle(activeSPNSwitch)
}
}
func clickListener(item *systray.MenuItem, fn func()) {
for range item.ClickedCh {
fn()
}
}
func launchApp() {
// build path to app
pmStartPath := filepath.Join(dataDir, "portmaster-start")
if runtime.GOOS == "windows" {
pmStartPath += ".exe"
}
// start app
cmd := exec.Command(pmStartPath, "app", "--data", dataDir)
err := cmd.Start()
if err != nil {
log.Warningf("failed to start app: %s", err)
return
}
// Use cmd.Wait() instead of cmd.Process.Release() to properly release its resources.
// See https://github.com/golang/go/issues/36534
go func() {
err := cmd.Wait()
if err != nil {
log.Warningf("failed to wait/release app process: %s", err)
}
}()
}