--- /dev/null
+/*
+ * Copyright © 2021 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Cell <https://www.stoutner.com/privacy-cell>.
+ *
+ * Privacy Cell 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.
+ *
+ * Privacy Cell 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 Privacy Cell. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacycell.services
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationChannelGroup
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import android.telephony.PhoneStateListener
+import android.telephony.TelephonyDisplayInfo
+import android.telephony.TelephonyManager
+
+import com.stoutner.privacycell.R
+import com.stoutner.privacycell.activities.PrivacyCellActivity
+
+// Define the class constants.
+const val REALTIME_MONITORING = "realtime_monitoring"
+const val NOTIFICATION_ID = 1
+
+class RealtimeMonitoringService : Service() {
+ companion object {
+ // Define the public constants.
+ const val SECURE_NETWORK = "secure_network"
+ const val INSECURE_NETWORK = "insecure_network"
+ }
+
+ override fun onBind(intent: Intent?): IBinder? {
+ // Do nothing.
+ return null
+ }
+
+ override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
+ // Get a handle for the notification manager.
+ val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+
+ // Create a notification channel group.
+ notificationManager.createNotificationChannelGroup(NotificationChannelGroup(REALTIME_MONITORING, getString(R.string.realtime_monitoring)))
+
+ // Prepare the notification channels.
+ val secureNetworkChannel = NotificationChannel(SECURE_NETWORK, getString(R.string.secure_network_channel), NotificationManager.IMPORTANCE_DEFAULT)
+ val insecureNetworkChannel = NotificationChannel(INSECURE_NETWORK, getString(R.string.insecure_network_channel), NotificationManager.IMPORTANCE_DEFAULT)
+
+ // Set the notification channel group.
+ secureNetworkChannel.group = REALTIME_MONITORING
+ insecureNetworkChannel.group = REALTIME_MONITORING
+
+ // Disable the notification dots.
+ secureNetworkChannel.setShowBadge(false)
+ insecureNetworkChannel.setShowBadge(false)
+
+ // Set the notifications to be public.
+ secureNetworkChannel.lockscreenVisibility = Notification.VISIBILITY_PUBLIC
+ insecureNetworkChannel.lockscreenVisibility = Notification.VISIBILITY_PUBLIC
+
+ // Create the notification channels.
+ notificationManager.createNotificationChannel(secureNetworkChannel)
+ notificationManager.createNotificationChannel(insecureNetworkChannel)
+
+ // Create a notification builder.
+ val notificationBuilder = Notification.Builder(this, INSECURE_NETWORK)
+
+ // Create an intent to open Privacy Cell.
+ val privacyCellIntent = Intent(this, PrivacyCellActivity::class.java)
+
+ // Create a pending intent from the Privacy Cell intent.
+ val privacyCellPendingIntent = PendingIntent.getActivity(this, 0, privacyCellIntent, PendingIntent.FLAG_IMMUTABLE)
+
+ // Set the notification to open Privacy Cell.
+ notificationBuilder.setContentIntent(privacyCellPendingIntent)
+
+ // Set the notification text.
+ notificationBuilder.setContentText(getString(R.string.unknown_network))
+
+ // Set the notification icon.
+ notificationBuilder.setSmallIcon(R.drawable.insecure_notification)
+
+ // Set the color.
+ notificationBuilder.setColor(getColor(R.color.red_text))
+
+ // Start the foreground notification.
+ startForeground(NOTIFICATION_ID, notificationBuilder.build())
+
+ // Get a handle for the telephony manager and the context.
+ val telephonyManager = getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager
+
+ // Initialize the current status.
+ var currentStatus = ""
+
+ // Listen for changes to the phone state.
+ telephonyManager.listen(object : PhoneStateListener() {
+ override fun onDisplayInfoChanged(telephonyDisplayInfo: TelephonyDisplayInfo) {
+ // Populate the notification according to the network type.
+ if (telephonyDisplayInfo.networkType == TelephonyManager.NETWORK_TYPE_NR) { // This is a secure 5G NR SA network.
+ // Only update the notification if the network status has changed.
+ if (currentStatus != SECURE_NETWORK) {
+ // Create a secure network notification builder.
+ val secureNetworkNotificationBuilder = Notification.Builder(applicationContext, SECURE_NETWORK)
+
+ // Set the notification to open Privacy Cell.
+ secureNetworkNotificationBuilder.setContentIntent(privacyCellPendingIntent)
+
+ // Set the notification text.
+ secureNetworkNotificationBuilder.setContentText(getString(R.string.secure_network))
+
+ // Set the notification icon.
+ secureNetworkNotificationBuilder.setSmallIcon(R.drawable.secure_notification)
+
+ // Set the color.
+ secureNetworkNotificationBuilder.setColor(getColor(R.color.blue_text))
+
+ // Update the notification.
+ notificationManager.notify(NOTIFICATION_ID, secureNetworkNotificationBuilder.build())
+
+ // Store the new network status.
+ currentStatus = SECURE_NETWORK
+ }
+ } else { // This is not a secure 5G NR SA network.
+ // Only update the notification if the network status has changed.
+ if (currentStatus !=INSECURE_NETWORK) {
+ // Create an insecure network notification builder.
+ val insecureNetworkNotificationBuilder = Notification.Builder(applicationContext, INSECURE_NETWORK)
+
+ // Set the notification to open Privacy Cell.
+ insecureNetworkNotificationBuilder.setContentIntent(privacyCellPendingIntent)
+
+ // Set the notification text.
+ insecureNetworkNotificationBuilder.setContentText(getString(R.string.insecure_network))
+
+ // Set the notification icon.
+ insecureNetworkNotificationBuilder.setSmallIcon(R.drawable.insecure_notification)
+
+ // Set the color.
+ insecureNetworkNotificationBuilder.setColor(getColor(R.color.red_text))
+
+ // Update the notification.
+ notificationManager.notify(NOTIFICATION_ID, insecureNetworkNotificationBuilder.build())
+
+ // Store the new network status.
+ currentStatus = INSECURE_NETWORK
+ }
+ }
+ }
+ }, PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED)
+
+ // Return a sticky service.
+ return START_STICKY
+ }
+}
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projects / PrivacyCell.git / blobdiff