adjust build and add a variant that doesn't allow user-added libraries

app/build.gradle

@@ -15,21 +15,27 @@ android {
         ndk {
             abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
         }
+        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
     }
 
     buildTypes {
         release {
             minifyEnabled true
-            //shrinkResources true todo: test before enabling, a lot of resources are accessed via getIdentifier and possibly not all have been marked with "keep"
+            shrinkResources true
+            debuggable false
+            jniDebuggable false
+            renderscriptDebuggable false
+        }
+        nouserlib { // same as release, but does not allow the user to provide a library
+            minifyEnabled true
+            shrinkResources true
             debuggable false
             jniDebuggable false
             renderscriptDebuggable false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro', 'src/main/proguard.flags'
         }
         debug {
             minifyEnabled true
             jniDebuggable false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro', 'src/main/proguard.flags'
             applicationIdSuffix ".debug"
         }
         archivesBaseName = "openboard_" + defaultConfig.versionName
@@ -82,7 +88,7 @@ dependencies {
     implementation 'androidx.preference:preference:1.2.1' // includes appcompat
     implementation 'androidx.recyclerview:recyclerview:1.3.2'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.1"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.2"
     implementation 'com.github.martin-stone:hsv-alpha-color-picker-android:3.1.0'
     implementation 'androidx.autofill:autofill:1.1.0'
 

app/proguard-rules.pro

@@ -1,17 +1,27 @@
-# Add project specific ProGuard rules here.
-# By default, the flags in this file are appended to flags specified
-# in /home/iwo/android-sdk/tools/proguard/proguard-android.txt
-# You can edit the include path and order by changing the proguardFiles
-# directive in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
+# Keep classes and methods that have the @UsedForTesting annotation
+-keep @helium314.keyboard.annotations.UsedForTesting class *
+-keepclassmembers class * {
+    @helium314.keyboard.annotations.UsedForTesting *;
+}
 
-# Add any project specific keep options here:
+# Keep classes and methods that have the @ExternallyReferenced annotation
+-keep @helium314.keyboard.annotations.ExternallyReferenced class *
+-keepclassmembers class * {
+    @helium314.keyboard.annotations.ExternallyReferenced *;
+}
 
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
+# Keep native methods
+-keepclassmembers class * {
+    native <methods>;
+}
+
+# Keep classes that are used as a parameter type of methods that are also marked as keep
+# to preserve changing those methods' signature.
+-keep class helium314.keyboard.latin.Dictionary
+-keep class helium314.keyboard.latin.NgramContext
+-keep class helium314.keyboard.latin.makedict.ProbabilityInfo
+-keep class helium314.keyboard.latin.utils.LanguageModelParam
+
+# after upgrading to gradle 8, stack traces contain "unknown source"
+-keepattributes SourceFile,LineNumberTable
+-dontobfuscate

app/src/main/java/helium314/keyboard/keyboard/KeyboardLayout.java

@@ -18,8 +18,6 @@ import java.util.List;
 /**
  * KeyboardLayout maintains the keyboard layout information.
  */
-// todo: this seems completely unused, see whether it can be removed, or re-purposed to contain
-//  some useful information about the layout (currently that's in KeyboardParser.LayoutInfos)
 public class KeyboardLayout {
 
     private final int[] mKeyCodes;

app/src/main/java/helium314/keyboard/latin/settings/AdvancedSettingsFragment.kt

@@ -117,6 +117,9 @@ class AdvancedSettingsFragment : SubScreenFragment() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
             removePreference(Settings.PREF_SHOW_SETUP_WIZARD_ICON)
         }
+        if (BuildConfig.BUILD_TYPE == "nouserlib") {
+            removePreference("load_gesture_library")
+        }
         setupKeyLongpressTimeoutSettings()
         findPreference<Preference>("load_gesture_library")?.setOnPreferenceClickListener { onClickLoadLibrary() }
         findPreference<Preference>("backup_restore")?.setOnPreferenceClickListener { showBackupRestoreDialog() }

app/src/main/java/helium314/keyboard/latin/utils/JniUtils.java

@@ -57,7 +57,7 @@ public final class JniUtils {
         if (app != null) // use the actual path if possible
             filesDir = app.getFilesDir().getAbsolutePath();
         final File userSuppliedLibrary = new File(filesDir + File.separator + JNI_LIB_IMPORT_FILE_NAME);
-        if (userSuppliedLibrary.exists()) {
+        if (!BuildConfig.BUILD_TYPE.equals("nouserlib") && userSuppliedLibrary.exists()) {
             String wantedChecksum = expectedDefaultChecksum();
             try {
                 if (app != null) {

app/src/main/proguard.flags

@@ -1,30 +0,0 @@
-# Keep classes and methods that have the @UsedForTesting annotation
--keep @helium314.keyboard.annotations.UsedForTesting class *
--keepclassmembers class * {
-    @helium314.keyboard.annotations.UsedForTesting *;
-}
-
-# Keep classes and methods that have the @ExternallyReferenced annotation
--keep @helium314.keyboard.annotations.ExternallyReferenced class *
--keepclassmembers class * {
-    @helium314.keyboard.annotations.ExternallyReferenced *;
-}
-
-# Keep native methods
--keepclassmembers class * {
-    native <methods>;
-}
-
-# Keep classes that are used as a parameter type of methods that are also marked as keep
-# to preserve changing those methods' signature.
--keep class helium314.keyboard.latin.Dictionary
--keep class helium314.keyboard.latin.NgramContext
--keep class helium314.keyboard.latin.makedict.ProbabilityInfo
--keep class helium314.keyboard.latin.utils.LanguageModelParam
-
-# TODO: remove once used in code.
--keep class helium314.keyboard.keyboard.KeyboardLayout { *; }
-
-# after upgrading to gradle 8, stack traces contain "unknown source", which is horribly bad making them rather useless
--keepattributes SourceFile,LineNumberTable
--dontobfuscate