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.FileWriter;
   8 import java.io.BufferedReader;
   9 import java.io.BufferedWriter;
  10 import java.io.DataOutputStream;
  11
  12 import android.content.Context;
  13 import android.content.SharedPreferences;
  14
  15 public class DebounceModuleHelper
  16 {
  17         private Context ctx;
  18         public static final String PREFS_NAME = "DebounceCfg";
  19         final int SUPERUSER_REQUEST = 4223;
  20
  21         public DebounceModuleHelper(Context context) {
  22                 ctx = context;
  23         }
  24
  25         public void setAllValues() {
  26                 setDelay(getSavedDelay());
  27                 setSettle(getSavedSettle());
  28                 setPoll(getSavedPoll());
  29                 setHwDebounce(getSavedHwDebounce());
  30                 setHwDebounceTime(getSavedHwDebounceTime());
  31         }
  32
  33         public void loadModule() {
  34                 _loadModule();
  35                 setAllValues();
  36         }
  37
  38         protected void runAsRoot(String command) throws java.io.IOException,java.lang.InterruptedException {
  39                 Process rootcmd = Runtime.getRuntime().exec(new String[]{"su","-c","sh"});
  40                 DataOutputStream sh = new DataOutputStream(rootcmd.getOutputStream());
  41                 sh.writeBytes(command + "\n");
  42                 sh.writeBytes("exit\n");
  43                 sh.flush();
  44                 sh.close();
  45
  46                 rootcmd.waitFor();
  47         }
  48
  49         public synchronized void _loadModule() {
  50                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
  51
  52                 extractModule();
  53
  54                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
  55                 SharedPreferences.Editor editor = settings.edit();
  56                 if (is_safe_to_load()) {
  57                         editor.putBoolean("safe_to_load", false);
  58                         editor.commit();
  59                 }
  60
  61                 try {
  62                         runAsRoot("/system/bin/insmod " + debounce_ko);
  63                 } catch (Exception e) {
  64                         return;
  65                 }
  66
  67                 if (!isLoaded()) {
  68                         return;
  69                 }
  70
  71                 if (getDelay() < 0) {
  72                         return;
  73                 }
  74
  75                 /* Module was obviously loaded, so it is safe to load on boot */
  76                 editor.putBoolean("safe_to_load", true);
  77                 editor.commit();
  78         }
  79
  80         public synchronized void unloadModule() {
  81                 try {
  82                         runAsRoot("/system/bin/rmmod debounce");
  83                 } catch (Exception e) {}
  84         }
  85
  86         public synchronized boolean isLoaded() {
  87                 boolean loaded = false;
  88                 try {
  89                         String read;
  90
  91                         FileReader modules = new FileReader("/proc/modules");
  92                         BufferedReader modules_buf = new BufferedReader(modules);
  93
  94                         while((read = modules_buf.readLine()) != null) {
  95                                 if (read.regionMatches(0, "debounce", 0, 8)) {
  96                                         loaded = true;
  97                                 }
  98                         }
  99
 100                 } catch (Exception e) {
 101                         loaded = false;
 102                 }
 103
 104                 return loaded;
 105         }
 106
 107         private synchronized int getValue(String parameter) {
 108                 int value = -1;
 109
 110                 try {
 111                         String read;
 112
 113                         FileReader fr = new FileReader("/sys/devices/debounce/" + parameter);
 114                         BufferedReader fbuf = new BufferedReader(fr);
 115
 116                         read = fbuf.readLine();
 117                         if (read != null) {
 118                                 value = Integer.parseInt(read.trim());
 119                         }
 120
 121                         fbuf.close();
 122                 } catch (Exception e) {}
 123
 124                 return value;
 125         }
 126
 127         private synchronized void setValue(String parameter, int value) {
 128                 if (!isLoaded()) {
 129                         return;
 130                 }
 131
 132                 try {
 133                         FileWriter fw = new FileWriter("/sys/devices/debounce/" + parameter);
 134                         BufferedWriter fbuf = new BufferedWriter(fw);
 135
 136                         fbuf.write((new Integer(value)).toString());
 137
 138                         fbuf.close();
 139                 } catch (Exception e) {}
 140         }
 141
 142         public synchronized int getDelay() {
 143                 return getValue("debounce_delay");
 144         }
 145
 146         public synchronized void setDelay(int debounce_delay) {
 147                 setValue("debounce_delay", debounce_delay);
 148         }
 149
 150         public synchronized int getSettle() {
 151                 return getValue("settle_time");
 152         }
 153
 154         public synchronized void setSettle(int settle_time) {
 155                 setValue("settle_time", settle_time);
 156         }
 157
 158         public synchronized int getPoll() {
 159                 return getValue("poll_time");
 160         }
 161
 162         public synchronized void setPoll(int poll_time) {
 163                 setValue("poll_time", poll_time);
 164         }
 165
 166         public synchronized boolean getHwDebounce() {
 167                 if (getValue("hw_debounce") == 1)
 168                         return true;
 169
 170                 return false;
 171         }
 172
 173         public synchronized void setHwDebounce(boolean enable) {
 174                 if (enable)
 175                         setValue("hw_debounce", 1);
 176                 else
 177                         setValue("hw_debounce", 0);
 178         }
 179
 180         public synchronized int getHwDebounceTime() {
 181                 return getValue("hw_debounce_time");
 182         }
 183
 184         public synchronized void setHwDebounceTime(int time) {
 185                 setValue("hw_debounce_time", time);
 186         }
 187
 188         public synchronized int getSavedDelay() {
 189                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 190
 191                 return settings.getInt("debounce_delay", 15);
 192         }
 193
 194         public synchronized void setSavedDelay(int delay) {
 195                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 196                 SharedPreferences.Editor editor = settings.edit();
 197
 198                 editor.putInt("debounce_delay", delay);
 199                 editor.commit();
 200         }
 201
 202         public synchronized int getSavedSettle() {
 203                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 204
 205                 return settings.getInt("settle_time", 40);
 206         }
 207
 208         public synchronized void setSavedSettle(int settle) {
 209                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 210                 SharedPreferences.Editor editor = settings.edit();
 211
 212                 editor.putInt("settle_time", settle);
 213                 editor.commit();
 214         }
 215
 216         public synchronized int getSavedPoll() {
 217                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 218
 219                 return settings.getInt("poll_time", 20);
 220         }
 221
 222         public synchronized void setSavedPoll(int poll) {
 223                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 224                 SharedPreferences.Editor editor = settings.edit();
 225
 226                 editor.putInt("poll_time", poll);
 227                 editor.commit();
 228         }
 229
 230         public synchronized boolean getSavedHwDebounce() {
 231                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 232
 233                 return settings.getBoolean("hw_debounce", true);
 234         }
 235
 236         public synchronized void setSavedHwDebounce(boolean enable) {
 237                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 238                 SharedPreferences.Editor editor = settings.edit();
 239
 240                 editor.putBoolean("hw_debounce", enable);
 241                 editor.commit();
 242         }
 243
 244         public synchronized int getSavedHwDebounceTime() {
 245                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 246
 247                 return settings.getInt("hw_debounce_time", 1);
 248         }
 249
 250         public synchronized void setSavedHwDebounceTime(int time) {
 251                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 252                 SharedPreferences.Editor editor = settings.edit();
 253
 254                 editor.putInt("hw_debounce_time", time);
 255                 editor.commit();
 256         }
 257
 258         public synchronized boolean is_safe_to_load() {
 259                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 260                 return settings.getBoolean("safe_to_load", false);
 261         }
 262
 263         public synchronized boolean get_on_boot() {
 264                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 265                 return settings.getBoolean("on_boot", false);
 266         }
 267
 268         public synchronized void set_on_boot(boolean on_boot) {
 269                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 270                 SharedPreferences.Editor editor = settings.edit();
 271
 272                 editor.putBoolean("on_boot", on_boot);
 273                 editor.commit();
 274         }
 275
 276         private synchronized void extractModule() {
 277                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
 278
 279                 if (debounce_ko.exists()) {
 280                         return;
 281                 }
 282
 283                 try {
 284                         InputStream apk = ctx.getAssets().open("debounce.ko");
 285                         OutputStream mod = ctx.openFileOutput("debounce.ko.tmp", 0);
 286
 287                         //I assume a page is 4k...
 288                         byte buf[] = new byte[4096];
 289                         int bytes;
 290
 291                         while((bytes = apk.read(buf)) != -1) {
 292                                 mod.write(buf, 0, bytes);
 293                         }
 294
 295                         apk.close();
 296                         mod.close();
 297
 298                         File tmpfile = new File(debounce_ko + ".tmp");
 299                         tmpfile.renameTo(debounce_ko);
 300                 } catch (Exception e) {}
 301         }
 302 }