git.zerfleddert.de Git - ms2-fixes/blob - MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java

   1 package de.rmdir.ms2debounce;
   2
   3 import java.io.InputStream;
   4 import java.io.OutputStream;
   5 import java.io.File;
   6 import java.io.FileReader;
   7 import java.io.BufferedReader;
   8
   9 import android.content.Context;
  10
  11 public class DebounceModuleHelper
  12 {
  13         private Context ctx;
  14
  15         public DebounceModuleHelper(Context context) {
  16                 ctx = context;
  17         }
  18
  19         public void loadModule() {
  20                 loadModule(10);
  21         }
  22
  23         public void loadModule(int delay) {
  24                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
  25
  26                 extractModule();
  27
  28                 // FIXME: Read settings from database...
  29
  30                 try {
  31                         Process insmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/insmod " + debounce_ko + " debounce_delay=" + delay});
  32                         insmod.waitFor();
  33                 } catch (Exception e) {}
  34         }
  35
  36         public void unloadModule() {
  37                 try {
  38                         Process rmmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/rmmod debounce"});
  39                         rmmod.waitFor();
  40                 } catch (Exception e) {}
  41         }
  42
  43         public boolean isLoaded() {
  44                 boolean loaded = false;
  45                 try {
  46                         String read;
  47
  48                         FileReader modules = new FileReader("/proc/modules");
  49                         BufferedReader modules_buf = new BufferedReader(modules);
  50
  51                         while((read = modules_buf.readLine()) != null) {
  52                                 if (read.regionMatches(0, "debounce", 0, 8)) {
  53                                         loaded = true;
  54                                 }
  55                         }
  56
  57                 } catch (Exception e) {
  58                         loaded = false;
  59                 }
  60
  61                 return loaded;
  62         }
  63
  64         public int getDelay() {
  65                 int debounce_delay = -1;
  66
  67                 try {
  68                         String read;
  69
  70                         FileReader delay = new FileReader("/sys/module/debounce/parameters/debounce_delay");
  71                         BufferedReader delay_buf = new BufferedReader(delay);
  72
  73                         read = delay_buf.readLine();
  74                         if (read != null) {
  75                                 debounce_delay = Integer.parseInt(read.trim());
  76                         }
  77                 } catch (Exception e) {}
  78
  79                 return debounce_delay;
  80         }
  81
  82         private synchronized void extractModule() {
  83                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
  84
  85                 if (debounce_ko.exists()) {
  86                         return;
  87                 }
  88
  89                 try {
  90                         InputStream apk = ctx.getAssets().open("debounce.ko");
  91                         OutputStream mod = ctx.openFileOutput("debounce.ko.tmp", 0);
  92
  93                         //I assume a page is 4k...
  94                         byte buf[] = new byte[4096];
  95                         int bytes;
  96
  97                         while((bytes = apk.read(buf)) != -1) {
  98                                 mod.write(buf, 0, bytes);
  99                         }
 100
 101                         apk.close();
 102                         mod.close();
 103
 104                         File tmpfile = new File(debounce_ko + ".tmp");
 105                         tmpfile.renameTo(debounce_ko);
 106                 } catch (Exception e) {}
 107         }
 108 }