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.

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);