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tray.go
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tray.go
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package tray
import (
"context"
"log"
"os"
"strings"
"sync"
"time"
"github.com/NordSecurity/nordvpn-linux/daemon/pb"
filesharepb "github.com/NordSecurity/nordvpn-linux/fileshare/pb"
"github.com/NordSecurity/nordvpn-linux/internal"
"github.com/NordSecurity/nordvpn-linux/norduser"
"github.com/NordSecurity/nordvpn-linux/notify"
"github.com/NordSecurity/systray"
)
const (
NotifierStartDelay = 3 * time.Second
PollingUpdateInterval = 5 * time.Second
PollingFullUpdateInterval = 60 * time.Second
AccountInfoUpdateInterval = 24 * time.Hour
ConnectedString = "Connected"
)
type Status int
const (
Invalid Status = iota
Enabled
Disabled
)
type accountInfo struct {
accountInfo *pb.AccountResponse
updateTime time.Time
}
// getAccountInfo use cache to not query API every time
func (ai *accountInfo) getAccountInfo(client pb.DaemonClient) (*pb.AccountResponse, error) {
if time.Since(ai.updateTime) > AccountInfoUpdateInterval {
var err error
ai.accountInfo, err = client.AccountInfo(context.Background(), &pb.Empty{})
if err != nil {
return nil, err
}
ai.updateTime = time.Now()
}
return ai.accountInfo, nil
}
func (ai *accountInfo) reset() {
ai.updateTime = time.Time{}
ai.accountInfo = nil
}
type Instance struct {
client pb.DaemonClient
fileshareClient filesharepb.FileshareClient
accountInfo accountInfo
debugMode bool
notifier dbusNotifier
redrawChan chan struct{}
initialChan chan struct{}
updateChan chan bool
iconConnected string
iconDisconnected string
state trayState
quitChan chan<- norduser.StopRequest
}
type trayState struct {
systrayRunning bool
daemonAvailable bool
loggedIn bool
vpnActive bool
notificationsStatus Status
trayStatus Status
daemonError string
accountName string
vpnStatus string
vpnName string
vpnHostname string
vpnCity string
vpnCountry string
vpnVirtualLocation bool
mu sync.RWMutex
}
// Not thread safe. Lock mu before using
func (state *trayState) serverName() string {
vpnServerName := state.vpnName
if vpnServerName == "" {
vpnServerName = state.vpnHostname
}
if vpnServerName != "" {
if state.vpnVirtualLocation {
vpnServerName += " - Virtual"
}
}
return vpnServerName
}
func NewTrayInstance(client pb.DaemonClient, fileshareClient filesharepb.FileshareClient, quitChan chan<- norduser.StopRequest) *Instance {
return &Instance{client: client, fileshareClient: fileshareClient, quitChan: quitChan}
}
func (ti *Instance) WaitInitialTrayStatus() Status {
<-ti.initialChan
ti.state.mu.RLock()
defer ti.state.mu.RUnlock()
return ti.state.trayStatus
}
func (ti *Instance) Start() {
if os.Getenv("NORDVPN_TRAY_DEBUG") == "1" {
ti.debugMode = true
} else {
ti.debugMode = false
}
ti.iconConnected = notify.GetIconPath("nordvpn-tray-blue")
ti.iconDisconnected = notify.GetIconPath("nordvpn-tray-white")
currentDesktop := strings.ToLower(os.Getenv("XDG_CURRENT_DESKTOP"))
if strings.Contains(currentDesktop, "kde") {
// TODO: Kubuntu uses dark tray background instead KDE default white
ti.iconDisconnected = notify.GetIconPath("nordvpn-tray-black")
}
if strings.Contains(currentDesktop, "mate") {
ti.iconDisconnected = notify.GetIconPath("nordvpn-tray-gray")
}
ti.state.vpnStatus = "Disconnected"
ti.state.notificationsStatus = Invalid
ti.redrawChan = make(chan struct{})
ti.initialChan = make(chan struct{})
ti.updateChan = make(chan bool)
time.AfterFunc(NotifierStartDelay, func() { ti.notifier.start() })
go ti.pollingMonitor()
}
func (ti *Instance) OnExit() {
ti.state.mu.Lock()
ti.state.systrayRunning = false
ti.state.mu.Unlock()
}
func (ti *Instance) OnReady() {
systray.SetTitle("NordVPN")
systray.SetTooltip("NordVPN")
ti.state.mu.Lock()
if ti.state.vpnStatus == "Disconnected" {
systray.SetIconName(ti.iconDisconnected)
} else {
systray.SetIconName(ti.iconConnected)
}
ti.state.systrayRunning = true
ti.state.mu.Unlock()
go func() {
for {
ti.state.mu.RLock()
if ti.state.daemonAvailable {
if ti.state.loggedIn {
addVpnSection(ti)
}
addSettingsSection(ti)
addAccountSection(ti)
}
if ti.state.daemonError != "" {
addDaemonErrorSection(ti)
}
ti.state.mu.RUnlock()
if ti.debugMode {
addDebugSection(ti)
}
addQuitItem(ti)
systray.Refresh()
<-ti.redrawChan
ti.state.mu.RLock()
if !ti.state.systrayRunning {
ti.state.mu.RUnlock()
break
}
ti.state.mu.RUnlock()
if ti.debugMode {
log.Println(internal.DebugPrefix, "Redraw")
}
systray.ResetMenu()
}
}()
}