Steps toward following all the inconvenient, changing android rules:

* Set android:debuggable=false.
 * Call native code through JNI only.  Having a native executable on disk and exec-ing it no longer seems possible.
 * Do all the Tilde Friends things in one process, without a proper sandbox, until I can wire up a restricted service worker process.
 * Jam Android App Bundle (.aab) building into the makefile.
 * Yuck.

GNUmakefile

@@ -3,12 +3,13 @@
 MAKEFLAGS += --warn-undefined-variables
 MAKEFLAGS += --no-builtin-rules
 
-VERSION_CODE := 21
+VERSION_CODE := 22
 VERSION_NUMBER := 0.0.21-wip
 VERSION_NAME := Psst.  Look behind you.
 
 SQLITE_URL := https://www.sqlite.org/2024/sqlite-amalgamation-3460000.zip
 LIBUV_URL := https://dist.libuv.org/dist/v1.48.0/libuv-v1.48.0.tar.gz
+BUNDLETOOL_URL := https://github.com/google/bundletool/releases/download/1.17.0/bundletool-all-1.17.0.jar
 
 PROJECT = tildefriends
 BUILD_DIR ?= out
@@ -16,6 +17,7 @@ UNAME_S := $(shell uname -s)
 UNAME_M := $(shell uname -m)
 
 ANDROID_SDK ?= ~/Android/Sdk
+BUNDLETOOL = out/bundletool.jar
 
 HAVE_WIN := 0
 
@@ -150,9 +152,10 @@ ANDROID_RELEASE_TARGETS := $(filter-out $(DEBUG_TARGETS),$(ANDROID_TARGETS))
 NONANDROID_RELEASE_TARGETS := $(filter-out $(ANDROID_ARM64_TARGETS),$(RELEASE_TARGETS))
 NONANDROID_TARGETS := $(filter-out $(ANDROID_TARGETS),$(ALL_TARGETS))
 NONMACOS_TARGETS := $(filter-out $(MACOS_TARGETS) $(IOS_TARGETS) $(IOSSIM_TARGETS),$(ALL_TARGETS))
+DEADSTRIP_TARGETS := $(filter-out $(ANDROID_TARGETS),$(NONMACOS_TARGETS))
 
 $(NONANDROID_TARGETS): CFLAGS += -fno-omit-frame-pointer
-$(filter-out $(ANDROID_TARGETS) $(WINDOWS_TARGETS),$(ALL_TARGETS)): LDFLAGS += -rdynamic
+$(filter-out $(WINDOWS_TARGETS),$(ALL_TARGETS)): LDFLAGS += -rdynamic
 $(ANDROID_TARGETS): CFLAGS += \
 	--sysroot $(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/sysroot \
 	-fPIC \
@@ -205,7 +208,7 @@ $(ANDROID_X86_TARGETS): LDFLAGS += -Ldeps/openssl/android/x86/usr/local/lib
 $(ANDROID_X86_64_TARGETS): CFLAGS += -Ideps/openssl/android/x86_64/usr/local/include
 $(ANDROID_X86_64_TARGETS): LDFLAGS += -Ldeps/openssl/android/x86_64/usr/local/lib
 $(NONMACOS_TARGETS): CFLAGS += -Wno-cast-function-type
-$(NONMACOS_TARGETS): LDFLAGS += -Wl,--gc-sections
+$(DEADSTRIP_TARGETS): LDFLAGS += -Wl,--gc-sections
 $(IOS_TARGETS): CFLAGS += -mios-version-min=9.0 -Ideps/openssl/ios/ios64-xcrun/usr/local/include
 $(IOS_TARGETS): LDFLAGS += -Ldeps/openssl/ios/ios64-xcrun/usr/local/lib
 $(IOSSIM_TARGETS): CFLAGS += -Ideps/openssl/ios/iossimulator-xcrun/usr/local/include
@@ -698,7 +701,7 @@ $(CLASS_FILES) &: $(JAVA_FILES)
 out/apk/classes.dex: $(CLASS_FILES)
 	@mkdir -p $(dir $@)
 	@echo "[d8] $@"
-	@$(ANDROID_BUILD_TOOLS)/d8 --$(BUILD_TYPE) --lib $(ANDROID_PLATFORM)/android.jar --output $(dir $@) out/classes/com/unprompted/tildefriends/*.class
+	@$(ANDROID_BUILD_TOOLS)/d8 --lib $(ANDROID_PLATFORM)/android.jar --output $(dir $@) out/classes/com/unprompted/tildefriends/*.class
 
 PACKAGE_DIRS := \
 	apps/ \
@@ -719,13 +722,51 @@ out/apk/TildeFriends-arm-release.unsigned.apk: out/apk/classes.dex out/androidre
 out/apk/TildeFriends-x86-debug.unsigned.apk: out/apk/classes.dex out/androiddebug-x86_64/tildefriends out/androiddebug-x86/tildefriends $(RAW_FILES) out/apk/res.apk
 out/apk/TildeFriends-x86-release.unsigned.apk: out/apk/classes.dex out/androidrelease-x86_64/tildefriends out/androidrelease-x86/tildefriends $(RAW_FILES) out/apk/res.apk
 
+$(BUNDLETOOL):
+	@echo [curl] $(BUNDLETOOL_URL) TO $@
+	@curl -q -L --create-dirs -o $@ $(BUNDLETOOL_URL)
+
+out/TildeFriends.aab: out/apk/classes.dex $(filter-out %debug%, $(ANDROID_TARGETS)) $(RAW_FILES) out/apk/res.apk src/android/AndroidManifest.xml $(BUNDLETOOL)
+	@rm -rf out/aab/staging/
+	@mkdir -p out/aab/staging
+	@$(ANDROID_BUILD_TOOLS)/aapt2 link --proto-format -o out/aab/temporary.apk -I $(ANDROID_PLATFORM)/android.jar --manifest src/android/AndroidManifest.xml -R out/res/layout_activity_main.xml.flat -R out/res/drawable_icon.xml.flat --auto-add-overlay
+	@unzip out/aab/temporary.apk -d out/aab/staging/
+	@mkdir -p out/aab/staging/root/deps
+	@mkdir -p out/aab/staging/classes
+	@mkdir -p out/aab/staging/dex
+	@mkdir -p out/aab/staging/manifest
+	@mv out/aab/staging/AndroidManifest.xml out/aab/staging/manifest/AndroidManifest.xml
+	@cp out/apk/classes.dex out/aab/staging/dex/
+	@rm -fv out/base.zip
+	@cp -r out/apk-arm-release/lib/ out/aab/staging/
+	@cp -r out/apk-x86-release/lib/ out/aab/staging/
+	@cp -r apps/ out/aab/staging/root/
+	@rm -rf out/aab/staging/root/apps/welcome*
+	@cp -r core/ out/aab/staging/root/
+	@cp -r deps/prettier/ out/aab/staging/root/deps/
+	@cp -r deps/lit/ out/aab/staging/root/deps/
+	@cp -r deps/codemirror/ out/aab/staging/root/deps/
+	@cd out/aab/staging/; zip -r ../base.zip *; cd ../../../
+	@java -jar $(BUNDLETOOL) build-bundle --overwrite --config=src/android/BundleConfig.json --modules=out/aab/base.zip --output=$@
+	@jarsigner -keystore .keys/android.jks $@ androidKey -storepass android
+
+aab: out/TildeFriends.aab
+.PHONY: aab
+
+out/TildeFriends.apks: out/TildeFriends.aab $(BUNDLETOOL)
+	@java -jar $(BUNDLETOOL) build-apks --bundle out/TildeFriends.aab --overwrite --output $@ --ks .keys/android.jks --ks-key-alias androidKey --ks-pass pass:android
+
+aabgo: out/TildeFriends.apks $(BUNDLETOOL)
+	@java -jar $(BUNDLETOOL) install-apks --apks out/TildeFriends.apks
+	@adb shell am start com.unprompted.tildefriends/.TildeFriendsActivity
+
 out/apk/TildeFriends-arm-%.unsigned.apk:
 	@mkdir -p $(dir $@) out/apk-arm-$(BUILD_TYPE)/lib/arm64-v8a/ out/apk-arm-$(BUILD_TYPE)/lib/armeabi-v7a/
 	@echo "[aapt] $@"
-	@cp out/android$(BUILD_TYPE)/tildefriends out/apk-arm-$(BUILD_TYPE)/lib/arm64-v8a/tildefriends.so
+	@cp out/android$(BUILD_TYPE)/tildefriends out/apk-arm-$(BUILD_TYPE)/lib/arm64-v8a/libtildefriends.so
-	@cp out/android$(BUILD_TYPE)-armv7a/tildefriends out/apk-arm-$(BUILD_TYPE)/lib/armeabi-v7a/tildefriends.so
+	@cp out/android$(BUILD_TYPE)-armv7a/tildefriends out/apk-arm-$(BUILD_TYPE)/lib/armeabi-v7a/libtildefriends.so
-	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-arm-$(BUILD_TYPE)/lib/arm64-v8a/tildefriends.so
+	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-arm-$(BUILD_TYPE)/lib/arm64-v8a/libtildefriends.so
-	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-arm-$(BUILD_TYPE)/lib/armeabi-v7a/tildefriends.so
+	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-arm-$(BUILD_TYPE)/lib/armeabi-v7a/libtildefriends.so
 	@cp out/apk/res.apk $@.zip
 	@cp out/apk/classes.dex out/apk-arm-$(BUILD_TYPE)/
 	@cd out/apk-arm-$(BUILD_TYPE) && zip -u ../../$@.zip -q -9 -r . && cd ../../
@@ -735,10 +776,10 @@ out/apk/TildeFriends-arm-%.unsigned.apk:
 out/apk/TildeFriends-x86-%.unsigned.apk:
 	@mkdir -p $(dir $@) out/apk-x86-$(BUILD_TYPE)/lib/x86_64/ out/apk-x86-$(BUILD_TYPE)/lib/x86/
 	@echo "[aapt] $@"
-	@cp out/android$(BUILD_TYPE)-x86_64/tildefriends out/apk-x86-$(BUILD_TYPE)/lib/x86_64/tildefriends.so
+	@cp out/android$(BUILD_TYPE)-x86_64/tildefriends out/apk-x86-$(BUILD_TYPE)/lib/x86_64/libtildefriends.so
-	@cp out/android$(BUILD_TYPE)-x86/tildefriends out/apk-x86-$(BUILD_TYPE)/lib/x86/tildefriends.so
+	@cp out/android$(BUILD_TYPE)-x86/tildefriends out/apk-x86-$(BUILD_TYPE)/lib/x86/libtildefriends.so
-	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-x86-$(BUILD_TYPE)/lib/x86_64/tildefriends.so
+	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-x86-$(BUILD_TYPE)/lib/x86_64/libtildefriends.so
-	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-x86-$(BUILD_TYPE)/lib/x86/tildefriends.so
+	@$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-strip out/apk-x86-$(BUILD_TYPE)/lib/x86/libtildefriends.so
 	@cp out/apk/res.apk $@.zip
 	@cp out/apk/classes.dex out/apk-x86-$(BUILD_TYPE)/
 	@cd out/apk-x86-$(BUILD_TYPE) && zip -u ../../$@.zip -q -9 -r . && cd ../../
@@ -757,6 +798,11 @@ out/%.zopfli.apk: out/%.apk
 release-apk: out/TildeFriends-arm-release.zopfli.apk out/TildeFriends-x86-release.zopfli.apk
 .PHONY: release-apk
 
+apkgo: out/TildeFriends-arm-debug.apk
+	@adb install -r $<
+	@adb shell am start com.unprompted.tildefriends/.TildeFriendsActivity
+.PHONY: apkgo
+
 releaseapkgo: out/TildeFriends-arm-release.apk
 	@adb install -r $<
 	@adb shell am start com.unprompted.tildefriends/.TildeFriendsActivity

src/android/AndroidManifest.xml

@@ -1,15 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 	package="com.unprompted.tildefriends"
-	android:versionCode="21"
+	android:versionCode="22"
 	android:versionName="0.0.21-wip">
 	<uses-sdk android:minSdkVersion="24" android:targetSdkVersion="34"/>
 	<uses-permission android:name="android.permission.INTERNET"/>
 	<application
 		android:label="Tilde Friends"
 		android:usesCleartextTraffic="true"
-		android:debuggable="true"
+		android:debuggable="false">
-		android:extractNativeLibs="true">
 		<meta-data android:name="android.max_aspect" android:value="2.1"/>
 		<activity
 			android:name=".TildeFriendsActivity"

src/android/BundleConfig.json

@@ -0,0 +1,5 @@
+{
+	"optimizations" : {
+		"uncompress_native_libraries" : {}
+	}
+}

src/android/com/unprompted/tildefriends/TildeFriendsActivity.java

@@ -53,13 +53,23 @@ import java.util.concurrent.TimeUnit;
 public class TildeFriendsActivity extends Activity {
 	TildeFriendsWebView web_view;
 	String base_url;
+	String port_file_path;
 	Process process;
 	Thread thread;
+	Thread server_thread;
 
 	private ValueCallback<Uri[]> upload_message;
 	private final static int FILECHOOSER_RESULT = 1;
 	private float touch_down_y;
 
+	static {
+		Log.w("tildefriends", "Calling system.loadLibrary().");
+		System.loadLibrary("tildefriends");
+		Log.w("tildefriends", "system.loadLibrary() completed.");
+	}
+
+	static native int tf_server_main(String files_dir, String apk_path, String out_port_file_path);
+
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
 		StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
@@ -76,7 +86,7 @@ public class TildeFriendsActivity extends Activity {
 		Log.w("tildefriends", String.format("getPackageResourcePath() is %s", getPackageResourcePath().toString()));
 		Log.w("tildefriends", String.format("nativeLibraryDir is %s", getApplicationInfo().nativeLibraryDir));
 
-		String port_file_path = getFilesDir().toString() + "/port.txt";
+		port_file_path = getFilesDir().toString() + "/port.txt";
 		new File(port_file_path).delete();
 		base_url = "http://127.0.0.1:12345/";
 
@@ -134,17 +144,15 @@ public class TildeFriendsActivity extends Activity {
 		thread.start();
 
 		set_status("Starting server...");
-		String exe = getApplicationInfo().nativeLibraryDir + "/tildefriends.so";
+		server_thread = new Thread(new Runnable() {
-		ProcessBuilder builder = new ProcessBuilder(exe, "run", "-z", getPackageResourcePath().toString(), "-a", "out_http_port_file=" + port_file_path, "-p", "0");
+			@Override
-		Log.w("tildefriends", "files = " + getFilesDir().toString());
+			public void run() {
-		Log.w("tildefriends", "exe = " + exe);
+				Log.w("tildefriends", "Calling tf_server_main.");
-		builder.directory(getFilesDir());
+				int result = tf_server_main(getFilesDir().toString(), getPackageResourcePath().toString(), port_file_path);
-		builder.inheritIO();
+				Log.w("tildefriends", "tf_server_main returned " + result + ".");
-		try {
+			}
-			process = builder.start();
+		});
-		} catch (java.io.IOException e) {
+		server_thread.start();
-			Log.w("tildefriends", "IOException starting process: " + e.toString());
-		}
 
 		web_view.getSettings().setJavaScriptEnabled(true);
 		web_view.getSettings().setDatabaseEnabled(true);

src/main.c

@@ -34,6 +34,10 @@
 #include <unistd.h>
 #endif
 
+#if defined(__ANDROID__)
+#include "jni.h"
+#endif
+
 #if !defined(_countof)
 #define _countof(a) ((int)(sizeof((a)) / sizeof(*(a))))
 #endif
@@ -726,6 +730,83 @@ static void _startup(int argc, char* argv[])
 }
 
 #if defined(__ANDROID__)
+static jint _tf_server_main(JNIEnv* env, jobject this_object, jstring files_dir, jstring apk_path, jstring out_port_file_path)
+{
+	tf_printf("This is tf_server_main main.\n");
+	_startup(0, (char*[]) { NULL });
+	tf_printf("That was startup.\n");
+
+	const char* files = (*env)->GetStringUTFChars(env, files_dir, NULL);
+	const char* apk = (*env)->GetStringUTFChars(env, apk_path, NULL);
+	const char* out_port_file = (*env)->GetStringUTFChars(env, out_port_file_path, NULL);
+
+	tf_printf("FILES = %s\n", files);
+	tf_printf("APK = %s\n", apk);
+	tf_printf("OUT_PORT = %s\n", out_port_file);
+
+	int result = uv_chdir(files);
+	if (result)
+	{
+		tf_printf("uv_chdir: %s\n", uv_strerror(result));
+	}
+
+	size_t port_file_arg_length = strlen(out_port_file) + strlen("out_http_port_file=") + 1;
+	char* port_file_arg = alloca(port_file_arg_length);
+	snprintf(port_file_arg, port_file_arg_length, "out_http_port_file=%s", out_port_file);
+
+	const char* args[] =
+	{
+		"-z",
+		apk,
+		"-a",
+		port_file_arg,
+		"-p",
+		"0",
+		"-o", /* HACK!  FIXME! */
+	};
+
+	result = _tf_command_run(apk, _countof(args), (char**)args);
+
+	(*env)->ReleaseStringUTFChars(env, files_dir, files);
+	(*env)->ReleaseStringUTFChars(env, apk_path, apk);
+	(*env)->ReleaseStringUTFChars(env, out_port_file_path, out_port_file);
+
+	tf_printf("tf_server_main finished with %d.", result);
+	return result;
+}
+
+JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved)
+{
+	tf_printf("JNI_Onload called.\n");
+	JNIEnv* env;
+	if ((*vm)->GetEnv(vm, (void**)&env, JNI_VERSION_1_6) != JNI_OK)
+	{
+		tf_printf("Failed to get JNI environment.\n");
+		return JNI_ERR;
+	}
+
+	tf_printf("Finding class.\n");
+	jclass c = (*env)->FindClass(env, "com/unprompted/tildefriends/TildeFriendsActivity");
+	if (!c)
+	{
+		tf_printf("Failed to find TildeFriendsActivity class.\n");
+		return JNI_ERR;
+	}
+
+	tf_printf("Registering method.\n");
+	static const JNINativeMethod methods[] = {
+		{ "tf_server_main", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", _tf_server_main },
+	};
+	int result = (*env)->RegisterNatives(env, c, methods, (int)_countof(methods));
+	if (result != JNI_OK)
+	{
+		return result;
+	}
+
+	tf_printf("Done.\n");
+	return JNI_VERSION_1_6;
+}
+
 int main(int argc, char* argv[])
 {
 	_startup(argc, argv);