Merge branch '5538-notifications_for_fake_loc_ipscrambling' into 'main'

5538 notifications for fake loc ipscrambling

See merge request e/os/advanced-privacy!109

15 files changed, 332 insertions, 49 deletions

diff --git a/.idea/copyright/E_Foundation.xml b/.idea/copyright/E_Foundation.xml
deleted file mode 100644
index 6f4df2f..0000000
--- a/.idea/copyright/E_Foundation.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<component name="CopyrightManager">
-  <copyright>
-    <option name="notice" value="Copyright (C) &amp;#36;today.year E FOUNDATION&#10;&#10;This program is free software: you can redistribute it and/or modify&#10;it under the terms of the GNU General Public License as published by&#10;the Free Software Foundation, either version 3 of the License, or&#10;(at your option) any later version.&#10;&#10;This program is distributed in the hope that it will be useful,&#10;but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;GNU General Public License for more details.&#10;&#10;You should have received a copy of the GNU General Public License&#10;along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;." />
-    <option name="myName" value="E_Foundation" />
-  </copyright>
-</component>
\ No newline at end of file
diff --git a/.idea/copyright/MURENA.xml b/.idea/copyright/MURENA.xml
new file mode 100644
index 0000000..0c0ee95
--- /dev/null
+++ b/.idea/copyright/MURENA.xml
@@ -0,0 +1,6 @@
+<component name="CopyrightManager">
+  <copyright>
+    <option name="notice" value="Copyright (C) &amp;#36;today.year MURENA SAS&#10;&#10;This program is free software: you can redistribute it and/or modify&#10;it under the terms of the GNU General Public License as published by&#10;the Free Software Foundation, either version 3 of the License, or&#10;(at your option) any later version.&#10;&#10;This program is distributed in the hope that it will be useful,&#10;but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;GNU General Public License for more details.&#10;&#10;You should have received a copy of the GNU General Public License&#10;along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;." />
+    <option name="myName" value="MURENA" />
+  </copyright>
+</component>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 323a118..12d1159 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -132,7 +132,7 @@ dependencies {
 
     implementation project(':trackers')
 
-    implementation 'foundation.e:privacymodule.tor:1.6.0-dev-orbot-16.6.2'
+    implementation 'foundation.e:privacymodule.tor:1.7.0-orbot-16.6.2'
 
     implementation 'foundation.e:elib:0.0.1-alpha11'
 
diff --git a/app/src/main/java/foundation/e/privacycentralapp/DependencyContainer.kt b/app/src/main/java/foundation/e/privacycentralapp/DependencyContainer.kt
index f241e67..e6d4c42 100644
--- a/app/src/main/java/foundation/e/privacycentralapp/DependencyContainer.kt
+++ b/app/src/main/java/foundation/e/privacycentralapp/DependencyContainer.kt
@@ -143,9 +143,17 @@ class DependencyContainer(val app: Application) {
             getQuickPrivacyStateUseCase,
             trackersStatisticsUseCase,
         )
+
+        Notifications.startListening(
+            context,
+            getQuickPrivacyStateUseCase,
+            permissionsModule,
+            GlobalScope
+        )
     }
 }
 
+@Suppress("LongParameterList")
 class ViewModelsFactory(
     private val getQuickPrivacyStateUseCase: GetQuickPrivacyStateUseCase,
     private val trackersStatisticsUseCase: TrackersStatisticsUseCase,
diff --git a/app/src/main/java/foundation/e/privacycentralapp/Notifications.kt b/app/src/main/java/foundation/e/privacycentralapp/Notifications.kt
new file mode 100644
index 0000000..0df3e18
--- /dev/null
+++ b/app/src/main/java/foundation/e/privacycentralapp/Notifications.kt
@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2022 MURENA SAS
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+package foundation.e.privacycentralapp
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import androidx.annotation.StringRes
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import foundation.e.privacycentralapp.domain.entities.InternetPrivacyMode
+import foundation.e.privacycentralapp.domain.entities.MainFeatures
+import foundation.e.privacycentralapp.domain.usecases.GetQuickPrivacyStateUseCase
+import foundation.e.privacycentralapp.main.MainActivity
+import foundation.e.privacymodules.permissions.PermissionsPrivacyModule
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.onEach
+
+object Notifications {
+    const val CHANNEL_FIRST_BOOT = "first_boot_notification"
+    const val CHANNEL_FAKE_LOCATION_FLAG = "fake_location_flag"
+    const val CHANNEL_IPSCRAMBLING_FLAG = "ipscrambling_flag"
+
+    const val NOTIFICATION_FIRST_BOOT = 1000
+    const val NOTIFICATION_FAKE_LOCATION_FLAG = NOTIFICATION_FIRST_BOOT + 1
+    const val NOTIFICATION_IPSCRAMBLING_FLAG = NOTIFICATION_FAKE_LOCATION_FLAG + 1
+
+    fun showFirstBootNotification(context: Context) {
+        createNotificationFirstBootChannel(context)
+        val notificationBuilder: NotificationCompat.Builder = notificationBuilder(
+            context,
+            NotificationContent(
+                channelId = CHANNEL_FIRST_BOOT,
+                icon = R.drawable.ic_notification_logo,
+                title = R.string.first_notification_title,
+                description = R.string.first_notification_summary,
+                destinationIntent =
+                context.packageManager.getLaunchIntentForPackage(context.packageName)
+            )
+        )
+            .setAutoCancel(true)
+
+        NotificationManagerCompat.from(context).notify(
+            NOTIFICATION_FIRST_BOOT, notificationBuilder.build()
+        )
+    }
+
+    fun startListening(
+        appContext: Context,
+        getQuickPrivacyStateUseCase: GetQuickPrivacyStateUseCase,
+        permissionsPrivacyModule: PermissionsPrivacyModule,
+        appScope: CoroutineScope
+    ) {
+        createNotificationFlagChannel(
+            context = appContext,
+            permissionsPrivacyModule = permissionsPrivacyModule,
+            channelId = CHANNEL_FAKE_LOCATION_FLAG,
+            channelName = R.string.notifications_fake_location_channel_name,
+            channelDescription = R.string.notifications_fake_location_channel_description
+        )
+
+        createNotificationFlagChannel(
+            context = appContext,
+            permissionsPrivacyModule = permissionsPrivacyModule,
+            channelId = CHANNEL_IPSCRAMBLING_FLAG,
+            channelName = R.string.notifications_ipscrambling_channel_name,
+            channelDescription = R.string.notifications_ipscrambling_channel_description
+        )
+
+        getQuickPrivacyStateUseCase.isLocationHidden.onEach {
+            if (it) {
+                showFlagNotification(appContext, MainFeatures.FAKE_LOCATION)
+            } else {
+                hideFlagNotification(appContext, MainFeatures.FAKE_LOCATION)
+            }
+        }.launchIn(appScope)
+
+        getQuickPrivacyStateUseCase.ipScramblingMode.map {
+            it != InternetPrivacyMode.REAL_IP
+        }.distinctUntilChanged().onEach {
+            if (it) {
+                showFlagNotification(appContext, MainFeatures.IP_SCRAMBLING)
+            } else {
+                hideFlagNotification(appContext, MainFeatures.IP_SCRAMBLING)
+            }
+        }.launchIn(appScope)
+    }
+
+    private fun createNotificationFirstBootChannel(context: Context) {
+        val channel = NotificationChannel(
+            CHANNEL_FIRST_BOOT,
+            context.getString(R.string.notifications_first_boot_channel_name),
+            NotificationManager.IMPORTANCE_HIGH
+        )
+        NotificationManagerCompat.from(context).createNotificationChannel(channel)
+    }
+
+    private fun createNotificationFlagChannel(
+        context: Context,
+        permissionsPrivacyModule: PermissionsPrivacyModule,
+        channelId: String,
+        @StringRes channelName: Int,
+        @StringRes channelDescription: Int,
+    ) {
+        val channel = NotificationChannel(
+            channelId, context.getString(channelName), NotificationManager.IMPORTANCE_LOW
+        )
+        channel.description = context.getString(channelDescription)
+        permissionsPrivacyModule.setBlockable(channel)
+        NotificationManagerCompat.from(context).createNotificationChannel(channel)
+    }
+
+    private fun showFlagNotification(context: Context, feature: MainFeatures) {
+        when (feature) {
+            MainFeatures.FAKE_LOCATION -> showFlagNotification(
+                context = context,
+                id = NOTIFICATION_FAKE_LOCATION_FLAG,
+                content = NotificationContent(
+                    channelId = CHANNEL_FAKE_LOCATION_FLAG,
+                    icon = R.drawable.ic_fmd_bad,
+                    title = R.string.notifications_fake_location_title,
+                    description = R.string.notifications_fake_location_content,
+                    destinationIntent = MainActivity.createFakeLocationIntent(context),
+                )
+            )
+            MainFeatures.IP_SCRAMBLING -> showFlagNotification(
+                context = context,
+                id = NOTIFICATION_IPSCRAMBLING_FLAG,
+                content = NotificationContent(
+                    channelId = CHANNEL_IPSCRAMBLING_FLAG,
+                    icon = R.drawable.ic_language,
+                    title = R.string.notifications_ipscrambling_title,
+                    description = R.string.notifications_ipscrambling_content,
+                    destinationIntent = MainActivity.createIpScramblingIntent(context),
+                )
+            )
+            else -> {}
+        }
+    }
+
+    private fun showFlagNotification(
+        context: Context,
+        id: Int,
+        content: NotificationContent,
+    ) {
+        val builder = notificationBuilder(context, content)
+            .setPriority(NotificationCompat.PRIORITY_LOW)
+            .setOngoing(true)
+
+        NotificationManagerCompat.from(context).notify(id, builder.build())
+    }
+
+    private fun hideFlagNotification(context: Context, feature: MainFeatures) {
+        val id = when (feature) {
+            MainFeatures.FAKE_LOCATION -> NOTIFICATION_FAKE_LOCATION_FLAG
+            MainFeatures.IP_SCRAMBLING -> NOTIFICATION_IPSCRAMBLING_FLAG
+            else -> return
+        }
+        NotificationManagerCompat.from(context).cancel(id)
+    }
+
+    private data class NotificationContent(
+        val channelId: String,
+        val icon: Int,
+        val title: Int,
+        val description: Int,
+        val destinationIntent: Intent?
+    )
+
+    private fun notificationBuilder(
+        context: Context,
+        content: NotificationContent
+    ): NotificationCompat.Builder {
+        val builder = NotificationCompat.Builder(context, content.channelId)
+            .setSmallIcon(content.icon)
+            .setPriority(NotificationCompat.PRIORITY_LOW)
+            .setContentTitle(context.getString(content.title))
+            .setStyle(NotificationCompat.BigTextStyle().bigText(context.getString(content.description)))
+
+        content.destinationIntent?.let {
+            it.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            val pendingIntent: PendingIntent = PendingIntent.getActivity(
+                context, 0, it, PendingIntent.FLAG_IMMUTABLE
+            )
+            builder.setContentIntent(pendingIntent)
+        }
+
+        return builder
+    }
+}
diff --git a/app/src/main/java/foundation/e/privacycentralapp/common/BootCompletedReceiver.kt b/app/src/main/java/foundation/e/privacycentralapp/common/BootCompletedReceiver.kt
index f43c2cc..d7902ee 100644
--- a/app/src/main/java/foundation/e/privacycentralapp/common/BootCompletedReceiver.kt
+++ b/app/src/main/java/foundation/e/privacycentralapp/common/BootCompletedReceiver.kt
@@ -17,57 +17,20 @@
 
 package foundation.e.privacycentralapp.common
 
-import android.app.NotificationChannel
-import android.app.NotificationManager
-import android.app.PendingIntent
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
-import androidx.core.app.NotificationCompat
-import foundation.e.privacycentralapp.R
+import foundation.e.privacycentralapp.Notifications
 import foundation.e.privacycentralapp.data.repositories.LocalStateRepository
 
 class BootCompletedReceiver : BroadcastReceiver() {
-    companion object {
-        const val FIRST_BOOT_NOTIFICATION_ID = 10
-    }
-
     override fun onReceive(context: Context, intent: Intent?) {
         if (intent?.action == Intent.ACTION_BOOT_COMPLETED) {
             val localStateRepository = LocalStateRepository(context)
             if (localStateRepository.firstBoot) {
-                showNotification(context)
+                Notifications.showFirstBootNotification(context)
                 localStateRepository.firstBoot = false
             }
         }
     }
-
-    private fun showNotification(context: Context) {
-        val channelId = "first_boot_notification"
-        val pendingIntent =
-            PendingIntent.getActivity(
-                context,
-                0,
-                context.packageManager.getLaunchIntentForPackage(context.packageName),
-                PendingIntent.FLAG_IMMUTABLE
-            )
-        val notificationBuilder: NotificationCompat.Builder =
-            NotificationCompat.Builder(context, channelId)
-                .setSmallIcon(R.drawable.ic_notification_logo)
-                .setContentTitle(context.getString(R.string.first_notification_title))
-                .setAutoCancel(true)
-                .setContentIntent(pendingIntent)
-                .setStyle(
-                    NotificationCompat.BigTextStyle()
-                        .bigText(context.getString(R.string.first_notification_summary))
-                )
-        val notificationManager =
-            context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-
-        val name: CharSequence = "First Boot"
-        val importance = NotificationManager.IMPORTANCE_HIGH
-        val mChannel = NotificationChannel(channelId, name, importance)
-        notificationManager.createNotificationChannel(mChannel)
-        notificationManager.notify(FIRST_BOOT_NOTIFICATION_ID, notificationBuilder.build())
-    }
 }
diff --git a/app/src/main/java/foundation/e/privacycentralapp/main/MainActivity.kt b/app/src/main/java/foundation/e/privacycentralapp/main/MainActivity.kt
index a81f5b5..92dc326 100644
--- a/app/src/main/java/foundation/e/privacycentralapp/main/MainActivity.kt
+++ b/app/src/main/java/foundation/e/privacycentralapp/main/MainActivity.kt
@@ -26,6 +26,8 @@ import androidx.fragment.app.add
 import androidx.fragment.app.commit
 import foundation.e.privacycentralapp.R
 import foundation.e.privacycentralapp.features.dashboard.DashboardFragment
+import foundation.e.privacycentralapp.features.internetprivacy.InternetPrivacyFragment
+import foundation.e.privacycentralapp.features.location.FakeLocationFragment
 import foundation.e.privacycentralapp.features.trackers.TrackersFragment
 
 open class MainActivity : FragmentActivity(R.layout.activity_main) {
@@ -50,6 +52,12 @@ open class MainActivity : FragmentActivity(R.layout.activity_main) {
                 ACTION_VIEW_TRACKERS -> {
                     add<TrackersFragment>(R.id.container)
                 }
+                ACTION_VIEW_FAKE_LOCATION -> {
+                    add<FakeLocationFragment>(R.id.container)
+                }
+                ACTION_VIEW_IPSCRAMBLING -> {
+                    add<InternetPrivacyFragment>(R.id.container)
+                }
                 else -> add<DashboardFragment>(R.id.container)
             }
             disallowAddToBackStack()
@@ -69,6 +77,8 @@ open class MainActivity : FragmentActivity(R.layout.activity_main) {
     companion object {
         private const val ACTION_HIGHLIGHT_LEAKS = "ACTION_HIGHLIGHT_LEAKS"
         private const val ACTION_VIEW_TRACKERS = "ACTION_VIEW_TRACKERS"
+        private const val ACTION_VIEW_FAKE_LOCATION = "ACTION_VIEW_FAKE_LOCATION"
+        private const val ACTION_VIEW_IPSCRAMBLING = "ACTION_VIEW_IPSCRAMBLING"
 
         fun createHighlightLeaksIntent(context: Context, highlightIndex: Int) =
             Intent(context, MainActivity::class.java).apply {
@@ -80,5 +90,17 @@ open class MainActivity : FragmentActivity(R.layout.activity_main) {
             Intent(context, MainActivity::class.java).apply {
                 action = ACTION_VIEW_TRACKERS
             }
+
+        fun createFakeLocationIntent(context: Context): Intent {
+            return Intent(context, MainActivity::class.java).apply {
+                action = ACTION_VIEW_FAKE_LOCATION
+            }
+        }
+
+        fun createIpScramblingIntent(context: Context): Intent {
+            return Intent(context, MainActivity::class.java).apply {
+                action = ACTION_VIEW_IPSCRAMBLING
+            }
+        }
     }
 }
diff --git a/app/src/main/res/drawable/ic_fmd_bad.xml b/app/src/main/res/drawable/ic_fmd_bad.xml
new file mode 100644
index 0000000..beeff35
--- /dev/null
+++ b/app/src/main/res/drawable/ic_fmd_bad.xml
@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M12,2C7.8,2 4,5.22 4,10.2C4,13.52 6.67,17.45 12,22C17.33,17.45 20,13.52 20,10.2C20,5.22 16.2,2 12,2ZM12,19.33C7.95,15.63 6,12.54 6,10.19C6,6.57 8.65,4 12,4C15.35,4 18,6.57 18,10.2C18,12.54 16.05,15.64 12,19.33Z"
+      android:fillColor="#000000"/>
+  <path
+      android:pathData="M13,6H11V11H13V6Z"
+      android:fillColor="#000000"/>
+  <path
+      android:pathData="M13,13H11V15H13V13Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_language.xml b/app/src/main/res/drawable/ic_language.xml
new file mode 100644
index 0000000..ae37ec0
--- /dev/null
+++ b/app/src/main/res/drawable/ic_language.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M11.99,2C6.47,2 2,6.48 2,12C2,17.52 6.47,22 11.99,22C17.52,22 22,17.52 22,12C22,6.48 17.52,2 11.99,2ZM18.92,8H15.97C15.65,6.75 15.19,5.55 14.59,4.44C16.43,5.07 17.96,6.35 18.92,8ZM12,4.04C12.83,5.24 13.48,6.57 13.91,8H10.09C10.52,6.57 11.17,5.24 12,4.04ZM4.26,14C4.1,13.36 4,12.69 4,12C4,11.31 4.1,10.64 4.26,10H7.64C7.56,10.66 7.5,11.32 7.5,12C7.5,12.68 7.56,13.34 7.64,14H4.26ZM5.08,16H8.03C8.35,17.25 8.81,18.45 9.41,19.56C7.57,18.93 6.04,17.66 5.08,16ZM8.03,8H5.08C6.04,6.34 7.57,5.07 9.41,4.44C8.81,5.55 8.35,6.75 8.03,8ZM12,19.96C11.17,18.76 10.52,17.43 10.09,16H13.91C13.48,17.43 12.83,18.76 12,19.96ZM14.34,14H9.66C9.57,13.34 9.5,12.68 9.5,12C9.5,11.32 9.57,10.65 9.66,10H14.34C14.43,10.65 14.5,11.32 14.5,12C14.5,12.68 14.43,13.34 14.34,14ZM14.59,19.56C15.19,18.45 15.65,17.25 15.97,16H18.92C17.96,17.65 16.43,18.93 14.59,19.56ZM16.36,14C16.44,13.34 16.5,12.68 16.5,12C16.5,11.32 16.44,10.66 16.36,10H19.74C19.9,10.64 20,11.31 20,12C20,12.69 19.9,13.36 19.74,14H16.36Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4d6e1f9..b29bbca 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -102,6 +102,7 @@
     <string name="warningdialog_ipscrambling_message">This option uses the TOR network to hide your real IP address. Only use it for specific applications. While your IP is faked, your Internet speed is likely to be reduced.\n<b>Important:</b> we advise disabling this feature for email services as your address may end into permanent ban from your provider.</string>
     <string name="warningdialog_ipscrambling_cta">I understand</string>
 
+
     <!-- Widget -->
     <string name="widget_title" translatable="false">@string/app_name</string>
     <string name="widget_state_title_on">Your online privacy is protected</string>
@@ -119,6 +120,20 @@
     <string name="widget_state_ipaddress_on" translatable="false">@string/dashboard_state_ipaddress_on</string>
     <string name="widget_graph_trackers_legend" translatable="false">@string/dashboard_graph_trackers_legend</string>
     <string name="widget_graph_view_trackers">View</string>
+
+    <!-- Notifications -->
+    <string name="notifications_first_boot_channel_name">First Boot</string>
     <string name="first_notification_title">Discover Advanced Privacy</string>
     <string name="first_notification_summary">Tap to find out how to easily block trackers, fake your location &amp; hide your IP address.</string>
+    <string name="notifications_fake_location_channel_name">Fake location flag</string>
+    <string name="notifications_fake_location_channel_description">Highlight that location is currently faked by Advanced Privacy</string>
+
+    <string name="notifications_fake_location_title">Fake location is on</string>
+    <string name="notifications_fake_location_content">All apps using your location including your navigation app are now using this fake location.</string>
+
+    <string name="notifications_ipscrambling_channel_name">Hide my IP flag</string>
+    <string name="notifications_ipscrambling_channel_description">Highlight that IP is currently hidden by Advanced Privacy</string>
+    <string name="notifications_ipscrambling_title">Real IP hidden</string>
+    <string name="notifications_ipscrambling_content">This could impact the functioning of some applications.</string>
+
 </resources>
diff --git a/build.gradle b/build.gradle
index 2abc73d..83197c3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ buildscript {
         'targetSdk' : 31,
         'version'   : [
             'major': 1,
-            'minor': 4,
+            'minor': 7,
             'patch': 0,
         ],
     ]
@@ -131,7 +131,6 @@ subprojects {
             targetExclude('bin/**/*.kt')
             targetExclude '**/spotless/*.kt'
             ktlint(Versions.ktlint)
-            licenseHeaderFile rootProject.file('spotless/copyright.kt')
         }
         format 'misc', {
             // define the files to apply `misc` to
diff --git a/spotless/copyright.kt b/permissionse/libs/hidden-apis-stub/src/main/java/android/app/NotificationChannel.java
index 698a463..9e8d65a 100644
--- a/spotless/copyright.kt
+++ b/permissionse/libs/hidden-apis-stub/src/main/java/android/app/NotificationChannel.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) $YEAR E FOUNDATION
+ * Copyright (C) 2022 MURENA SAS
  *
  * 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
@@ -15,3 +15,20 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+package android.app;
+
+import android.annotation.TargetApi;
+
+import androidx.annotation.DeprecatedSinceApi;
+
+public class NotificationChannel {
+
+    @TargetApi(29)
+    @DeprecatedSinceApi(api = 30, message = "Use setBlockable() instead.")
+    public void setBlockableSystem(boolean blockableSystem) {}
+
+    // Public in API 33.
+    @TargetApi(30)
+    public void setBlockable(boolean blockableSystem) {}
+
+}
diff --git a/permissionse/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt b/permissionse/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt
index 83711dd..c07f367 100644
--- a/permissionse/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt
+++ b/permissionse/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt
@@ -21,6 +21,7 @@ import android.annotation.TargetApi
 import android.app.AppOpsManager
 import android.app.AppOpsManager.OP_NONE
 import android.app.AppOpsManager.strOpToOp
+import android.app.NotificationChannel
 import android.content.Context
 import android.net.IConnectivityManager
 import android.net.VpnManager
@@ -191,4 +192,14 @@ class PermissionsPrivacyModule(context: Context) : APermissionsPrivacyModule(con
             return null
         }
     }
+
+    override fun setBlockable(notificationChannel: NotificationChannel) {
+        when (Build.VERSION.SDK_INT) {
+            29 -> notificationChannel.setBlockableSystem(true)
+            30, 31, 32 -> notificationChannel.setBlockable(true)
+            else -> {
+                Log.e("Permissions-e", "Bad android sdk version")
+            }
+        }
+    }
 }
diff --git a/permissionsstandalone/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt b/permissionsstandalone/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt
index 98ebdc3..52dfd08 100644
--- a/permissionsstandalone/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt
+++ b/permissionsstandalone/src/main/java/foundation/e/privacymodules/permissions/PermissionsPrivacyModule.kt
@@ -17,6 +17,7 @@
 
 package foundation.e.privacymodules.permissions
 
+import android.app.NotificationChannel
 import android.content.Context
 import foundation.e.privacymodules.permissions.data.AppOpModes
 import foundation.e.privacymodules.permissions.data.ApplicationDescription
@@ -48,4 +49,6 @@ class PermissionsPrivacyModule(context: Context) : APermissionsPrivacyModule(con
     override fun getAlwaysOnVpnPackage(): String? {
         return null
     }
+
+    override fun setBlockable(notificationChannel: NotificationChannel) {}
 }
diff --git a/privacymodule-api/src/main/java/foundation/e/privacymodules/permissions/IPermissionsPrivacyModule.kt b/privacymodule-api/src/main/java/foundation/e/privacymodules/permissions/IPermissionsPrivacyModule.kt
index 6624798..ff0b3d7 100644
--- a/privacymodule-api/src/main/java/foundation/e/privacymodules/permissions/IPermissionsPrivacyModule.kt
+++ b/privacymodule-api/src/main/java/foundation/e/privacymodules/permissions/IPermissionsPrivacyModule.kt
@@ -17,6 +17,7 @@
 
 package foundation.e.privacymodules.permissions
 
+import android.app.NotificationChannel
 import android.content.pm.ApplicationInfo
 import android.graphics.drawable.Drawable
 import foundation.e.privacymodules.permissions.data.AppOpModes
@@ -128,4 +129,14 @@ interface IPermissionsPrivacyModule {
      * Returns the package name of the currently set always-on VPN application, or null.
      */
     fun getAlwaysOnVpnPackage(): String?
+
+    /**
+     * Allows users to block notifications sent through this channel, if this channel belongs to
+     * a package that is signed with the system signature.
+     *
+     * If the channel does not belong to a package that is signed with the system signature, this
+     * method does nothing, since such channels are blockable by default and cannot be set to be
+     * unblockable.
+     */
+    fun setBlockable(notificationChannel: NotificationChannel)
 }