X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/ms2-fixes/blobdiff_plain/0ae502f627e216e71b179a37079c9d43c7feeed3..dea0f4b0ccb139fe558e88c18547c019c934add0:/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java

diff --git a/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java b/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java
index f4569a5..6901353 100644
--- a/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java
+++ b/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java
@@ -1,15 +1,162 @@
 package de.rmdir.ms2debounce;
 
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.File;
+import java.io.FileReader;
+import java.io.BufferedReader;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
 public class DebounceModuleHelper
 {
-	static public void loadModule() {
+	private Context ctx;
+	public static final String PREFS_NAME = "DebounceCfg";
+
+	public DebounceModuleHelper(Context context) {
+		ctx = context;
+	}
+
+	public void loadModule() {
+		loadModule(getSavedDelay());
+	}
+
+	public synchronized void loadModule(int delay) {
+		File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
+
+		extractModule();
+
+		SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+		SharedPreferences.Editor editor = settings.edit();
+		if (is_safe_to_load()) {
+			editor.putBoolean("safe_to_load", false);
+			editor.commit();
+		}
+
 		try {
-			Process insmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/insmod /system/lib/modules/debounce.ko"});
+			Process insmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/insmod " + debounce_ko + " debounce_delay=" + delay});
 			insmod.waitFor();
+		} catch (Exception e) {
+			return;
+		}
+
+		if (!isLoaded()) {
+			return;
+		}
+
+		if (getDelay() <= 0) {
+			return;
+		}
+
+		/* Module was obviously loaded, so it is safe to load on boot */
+		editor.putBoolean("safe_to_load", true);
+		editor.commit();
+	}
+
+	public synchronized void unloadModule() {
+		try {
+			Process rmmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/rmmod debounce"});
+			rmmod.waitFor();
+		} catch (Exception e) {}
+	}
+
+	public synchronized boolean isLoaded() {
+		boolean loaded = false;
+		try {
+			String read;
+
+			FileReader modules = new FileReader("/proc/modules");
+			BufferedReader modules_buf = new BufferedReader(modules);
+
+			while((read = modules_buf.readLine()) != null) {
+				if (read.regionMatches(0, "debounce", 0, 8)) {
+					loaded = true;
+				}
+			}
+
+		} catch (Exception e) {
+			loaded = false;
+		}
+
+		return loaded;
+	}
+
+	public synchronized int getDelay() {
+		int debounce_delay = -1;
+
+		try {
+			String read;
+
+			FileReader delay = new FileReader("/sys/module/debounce/parameters/debounce_delay");
+			BufferedReader delay_buf = new BufferedReader(delay);
+
+			read = delay_buf.readLine();
+			if (read != null) {
+				debounce_delay = Integer.parseInt(read.trim());
+			}
 		} catch (Exception e) {}
+
+		return debounce_delay;
+	}
+
+	public synchronized void setDelay(int delay) {
+		if (isLoaded()) {
+			if (getDelay() == delay) {
+				return;
+			}
+
+			unloadModule();
+		}
+
+		loadModule(delay);
+	}
+
+	public synchronized int getSavedDelay() {
+		SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+
+		return settings.getInt("debounce_delay", 10);
+	}
+
+	public synchronized void setSavedDelay(int delay) {
+		SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+		SharedPreferences.Editor editor = settings.edit();
+
+		editor.putInt("debounce_delay", delay);
+		editor.commit();
 	}
 
-	static public boolean isLoaded() {
-		return false;
+	public synchronized boolean is_safe_to_load() {
+		SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+		boolean safe_to_load = settings.getBoolean("safe_to_load", false);
+
+		return safe_to_load;
+	}
+
+	private synchronized void extractModule() {
+		File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
+
+		if (debounce_ko.exists()) {
+			return;
+		}
+
+		try {
+			InputStream apk = ctx.getAssets().open("debounce.ko");
+			OutputStream mod = ctx.openFileOutput("debounce.ko.tmp", 0);
+
+			//I assume a page is 4k...
+			byte buf[] = new byte[4096];
+			int bytes;
+
+			while((bytes = apk.read(buf)) != -1) {
+				mod.write(buf, 0, bytes);
+			}
+
+			apk.close();
+			mod.close();
+
+			File tmpfile = new File(debounce_ko + ".tmp");
+			tmpfile.renameTo(debounce_ko);
+		} catch (Exception e) {}
 	}
 }