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                 setDriveInactive(getSavedDriveInactive());
  32         }
  33
  34         public void loadModule() {
  35                 _loadModule();
  36                 setAllValues();
  37         }
  38
  39         protected void runAsRoot(String command) throws java.io.IOException,java.lang.InterruptedException {
  40                 Process rootcmd = Runtime.getRuntime().exec(new String[]{"su","-c","sh"});
  41                 DataOutputStream sh = new DataOutputStream(rootcmd.getOutputStream());
  42                 sh.writeBytes(command + "\n");
  43                 sh.writeBytes("exit\n");
  44                 sh.flush();
  45                 sh.close();
  46
  47                 rootcmd.waitFor();
  48         }
  49
  50         public synchronized void _loadModule() {
  51                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
  52
  53                 extractModule();
  54
  55                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
  56                 SharedPreferences.Editor editor = settings.edit();
  57                 if (is_safe_to_load()) {
  58                         editor.putBoolean("safe_to_load", false);
  59                         editor.commit();
  60                 }
  61
  62                 try {
  63                         runAsRoot("/system/bin/insmod " + debounce_ko);
  64                 } catch (Exception e) {
  65                         return;
  66                 }
  67
  68                 if (!isLoaded()) {
  69                         return;
  70                 }
  71
  72                 if (getDelay() < 0) {
  73                         return;
  74                 }
  75
  76                 /* Module was obviously loaded, so it is safe to load on boot */
  77                 editor.putBoolean("safe_to_load", true);
  78                 editor.commit();
  79         }
  80
  81         public synchronized void unloadModule() {
  82                 try {
  83                         runAsRoot("/system/bin/rmmod debounce");
  84                 } catch (Exception e) {}
  85         }
  86
  87         public synchronized boolean isLoaded() {
  88                 boolean loaded = false;
  89                 try {
  90                         String read;
  91
  92                         FileReader modules = new FileReader("/proc/modules");
  93                         BufferedReader modules_buf = new BufferedReader(modules);
  94
  95                         while((read = modules_buf.readLine()) != null) {
  96                                 if (read.regionMatches(0, "debounce", 0, 8)) {
  97                                         loaded = true;
  98                                 }
  99                         }
 100
 101                 } catch (Exception e) {
 102                         loaded = false;
 103                 }
 104
 105                 return loaded;
 106         }
 107
 108         private synchronized int getValue(String parameter) {
 109                 int value = -1;
 110
 111                 try {
 112                         String read;
 113
 114                         FileReader fr = new FileReader("/sys/devices/debounce/" + parameter);
 115                         BufferedReader fbuf = new BufferedReader(fr);
 116
 117                         read = fbuf.readLine();
 118                         if (read != null) {
 119                                 value = Integer.parseInt(read.trim());
 120                         }
 121
 122                         fbuf.close();
 123                 } catch (Exception e) {}
 124
 125                 return value;
 126         }
 127
 128         private synchronized void setValue(String parameter, int value) {
 129                 if (!isLoaded()) {
 130                         return;
 131                 }
 132
 133                 try {
 134                         FileWriter fw = new FileWriter("/sys/devices/debounce/" + parameter);
 135                         BufferedWriter fbuf = new BufferedWriter(fw);
 136
 137                         fbuf.write((new Integer(value)).toString());
 138
 139                         fbuf.close();
 140                 } catch (Exception e) {}
 141         }
 142
 143         public synchronized int getDelay() {
 144                 return getValue("debounce_delay");
 145         }
 146
 147         public synchronized void setDelay(int debounce_delay) {
 148                 setValue("debounce_delay", debounce_delay);
 149         }
 150
 151         public synchronized int getSettle() {
 152                 return getValue("settle_time");
 153         }
 154
 155         public synchronized void setSettle(int settle_time) {
 156                 setValue("settle_time", settle_time);
 157         }
 158
 159         public synchronized int getPoll() {
 160                 return getValue("poll_time");
 161         }
 162
 163         public synchronized void setPoll(int poll_time) {
 164                 setValue("poll_time", poll_time);
 165         }
 166
 167         public synchronized boolean getHwDebounce() {
 168                 if (getValue("hw_debounce") == 1)
 169                         return true;
 170
 171                 return false;
 172         }
 173
 174         public synchronized void setHwDebounce(boolean enable) {
 175                 if (enable)
 176                         setValue("hw_debounce", 1);
 177                 else
 178                         setValue("hw_debounce", 0);
 179         }
 180
 181         public synchronized int getHwDebounceTime() {
 182                 return getValue("hw_debounce_time");
 183         }
 184
 185         public synchronized void setHwDebounceTime(int time) {
 186                 setValue("hw_debounce_time", time);
 187         }
 188
 189         public synchronized boolean getDriveInactive() {
 190                 if (getValue("drive_inactive_flag") == 1)
 191                         return true;
 192
 193                 return false;
 194         }
 195
 196         public synchronized void setDriveInactive(boolean enable) {
 197                 if (enable)
 198                         setValue("drive_inactive_flag", 1);
 199                 else
 200                         setValue("drive_inactive_flag", 0);
 201         }
 202
 203         public synchronized int getSavedDelay() {
 204                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 205
 206                 return settings.getInt("debounce_delay", 15);
 207         }
 208
 209         public synchronized void setSavedDelay(int delay) {
 210                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 211                 SharedPreferences.Editor editor = settings.edit();
 212
 213                 editor.putInt("debounce_delay", delay);
 214                 editor.commit();
 215         }
 216
 217         public synchronized int getSavedSettle() {
 218                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 219
 220                 return settings.getInt("settle_time", 40);
 221         }
 222
 223         public synchronized void setSavedSettle(int settle) {
 224                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 225                 SharedPreferences.Editor editor = settings.edit();
 226
 227                 editor.putInt("settle_time", settle);
 228                 editor.commit();
 229         }
 230
 231         public synchronized int getSavedPoll() {
 232                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 233
 234                 return settings.getInt("poll_time", 20);
 235         }
 236
 237         public synchronized void setSavedPoll(int poll) {
 238                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 239                 SharedPreferences.Editor editor = settings.edit();
 240
 241                 editor.putInt("poll_time", poll);
 242                 editor.commit();
 243         }
 244
 245         public synchronized boolean getSavedHwDebounce() {
 246                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 247
 248                 return settings.getBoolean("hw_debounce", false);
 249         }
 250
 251         public synchronized void setSavedHwDebounce(boolean enable) {
 252                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 253                 SharedPreferences.Editor editor = settings.edit();
 254
 255                 editor.putBoolean("hw_debounce", enable);
 256                 editor.commit();
 257         }
 258
 259         public synchronized int getSavedHwDebounceTime() {
 260                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 261
 262                 return settings.getInt("hw_debounce_time", 1);
 263         }
 264
 265         public synchronized void setSavedHwDebounceTime(int time) {
 266                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 267                 SharedPreferences.Editor editor = settings.edit();
 268
 269                 editor.putInt("hw_debounce_time", time);
 270                 editor.commit();
 271         }
 272
 273         public synchronized boolean getSavedDriveInactive() {
 274                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 275
 276                 return settings.getBoolean("drive_inactive", false);
 277         }
 278
 279         public synchronized void setSavedDriveInactive(boolean enable) {
 280                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 281                 SharedPreferences.Editor editor = settings.edit();
 282
 283                 editor.putBoolean("drive_inactive", enable);
 284                 editor.commit();
 285         }
 286
 287         public synchronized boolean is_safe_to_load() {
 288                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 289                 return settings.getBoolean("safe_to_load", false);
 290         }
 291
 292         public synchronized boolean get_on_boot() {
 293                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 294                 return settings.getBoolean("on_boot", false);
 295         }
 296
 297         public synchronized void set_on_boot(boolean on_boot) {
 298                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 299                 SharedPreferences.Editor editor = settings.edit();
 300
 301                 editor.putBoolean("on_boot", on_boot);
 302                 editor.commit();
 303         }
 304
 305         private synchronized void extractModule() {
 306                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
 307
 308                 if (debounce_ko.exists()) {
 309                         return;
 310                 }
 311
 312                 try {
 313                         InputStream apk = ctx.getAssets().open("debounce.ko");
 314                         OutputStream mod = ctx.openFileOutput("debounce.ko.tmp", 0);
 315
 316                         //I assume a page is 4k...
 317                         byte buf[] = new byte[4096];
 318                         int bytes;
 319
 320                         while((bytes = apk.read(buf)) != -1) {
 321                                 mod.write(buf, 0, bytes);
 322                         }
 323
 324                         apk.close();
 325                         mod.close();
 326
 327                         File tmpfile = new File(debounce_ko + ".tmp");
 328                         tmpfile.renameTo(debounce_ko);
 329                 } catch (Exception e) {}
 330         }
 331 }