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 import android.util.Log;
  15
  16 public class DebounceModuleHelper
  17 {
  18         private Context ctx;
  19         public static final String PREFS_NAME = "DebounceCfg";
  20         final int SUPERUSER_REQUEST = 4223;
  21
  22         private static final String TAG = "DebounceModuleHelper";
  23
  24         public DebounceModuleHelper(Context context) {
  25                 ctx = context;
  26         }
  27
  28         public void setAllValues() {
  29                 setDelay(getSavedDelay());
  30                 setSettle(getSavedSettle());
  31                 setPoll(getSavedPoll());
  32                 setHwDebounce(getSavedHwDebounce());
  33                 setHwDebounceTime(getSavedHwDebounceTime());
  34                 //setDriveInactive(getSavedDriveInactive());
  35                 setActiveHigh(getSavedActiveHigh());
  36         }
  37
  38         public boolean loadModule() throws NotRootedException,ShellException {
  39                 if (!_loadModule())
  40                         return false;
  41
  42                 setAllValues();
  43
  44                 return true;
  45         }
  46
  47         protected void runAsRoot(String command) throws NotRootedException,ShellException {
  48                 Process rootcmd;
  49
  50                 Log.i(TAG, "Running as root: " + command);
  51                 try {
  52                         rootcmd = Runtime.getRuntime().exec(new String[]{"su","-c","sh"});
  53                 } catch (java.io.IOException e) {
  54                         Log.e(TAG, "Got IOException: " + e.getMessage() + " (" + e.getCause() + ")");
  55                         throw new NotRootedException();
  56                 }
  57
  58                 try {
  59                         DataOutputStream sh = new DataOutputStream(rootcmd.getOutputStream());
  60                         sh.writeBytes(command + "\n");
  61                         sh.writeBytes("exit\n");
  62                         sh.flush();
  63                         sh.close();
  64                 } catch (java.io.IOException e) {
  65                         Log.e(TAG, "Got IOException: " + e.getMessage() + " (" + e.getCause() + ")");
  66                         throw new ShellException();
  67                 }
  68
  69                 try {
  70                         int r = rootcmd.waitFor();
  71
  72                         if (r != 0) {
  73                                 Log.e(TAG, "Process returned: " + r);
  74                                 throw new ShellException();
  75                         }
  76                 } catch (java.lang.InterruptedException e) {
  77                         Log.e(TAG, "Got InterruptedException: " + e.getMessage() + " (" + e.getCause() + ")");
  78                         throw new ShellException();
  79                 }
  80
  81                 Log.i(TAG, "Process executed successfully");
  82         }
  83
  84         public synchronized boolean _loadModule() throws NotRootedException,ShellException {
  85                 Log.i(TAG, "Loading module");
  86
  87                 if (isLoaded()) {
  88                         Log.i(TAG, "Module already loaded");
  89                         return true;
  90                 }
  91
  92                 File insmod = new File("/system/bin/insmod");
  93                 if (!insmod.exists()) {
  94                         insmod = new File("/system/xbin/insmod");
  95                         if (!insmod.exists()) {
  96                                 Log.e(TAG, "insmod not found");
  97                                 return false;
  98                         }
  99                 }
 100
 101                 File debounce_ko = new File("/system/lib/modules/debounce.ko");
 102                 if (!debounce_ko.exists()) {
 103                         debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
 104
 105                         extractModule();
 106                 }
 107
 108                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 109                 SharedPreferences.Editor editor = settings.edit();
 110                 if (is_safe_to_load()) {
 111                         editor.putBoolean("safe_to_load", false);
 112                         editor.commit();
 113                 }
 114
 115                 runAsRoot(insmod + " " + debounce_ko);
 116
 117                 int cnt = 10;
 118                 while ((!isLoaded()) && (cnt > 0)) {
 119                         try {
 120                                 Thread.sleep(100);
 121                         } catch (Exception e) {
 122                                 Log.e(TAG, "Got Exception: " + e.getMessage() + " (" + e.getCause() + ")");
 123                                 return false;
 124                         }
 125                         cnt--;
 126                 }
 127
 128                 if (!isLoaded()) {
 129                         Log.e(TAG, "Module doesn't appear to be correctly loaded");
 130                         return false;
 131                 }
 132
 133                 if (getDelay() < 0) {
 134                         return false;
 135                 }
 136
 137                 /* Module was obviously loaded, so it is safe to load on boot */
 138                 editor.putBoolean("safe_to_load", true);
 139                 editor.commit();
 140
 141                 Log.i(TAG, "Module loaded successfully");
 142                 return true;
 143         }
 144
 145         public synchronized void unloadModule() throws NotRootedException,ShellException {
 146                 Log.i(TAG, "Unloading module");
 147
 148                 if (!isLoaded()) {
 149                         Log.i(TAG, "Module not loaded");
 150                         return;
 151                 }
 152
 153                 File rmmod = new File("/system/bin/rmmod");
 154
 155                 if (!rmmod.exists()) {
 156                         rmmod = new File("/system/xbin/rmmod");
 157                         if (!rmmod.exists()) {
 158                                 Log.e(TAG, "rmmod not found");
 159                                 return;
 160                         }
 161                 }
 162
 163                 runAsRoot(rmmod + " debounce");
 164         }
 165
 166         public synchronized boolean isLoaded() {
 167                 boolean loaded = false;
 168
 169                 try {
 170                         String read;
 171
 172                         FileReader modules = new FileReader("/proc/modules");
 173                         BufferedReader modules_buf = new BufferedReader(modules);
 174
 175                         while((read = modules_buf.readLine()) != null) {
 176                                 if (read.regionMatches(0, "debounce", 0, 8)) {
 177                                         File sysdir = new File("/sys/devices/debounce");
 178                                         if (sysdir.exists() && sysdir.isDirectory()) {
 179                                                 loaded = true;
 180                                                 break;
 181                                         }
 182                                 }
 183                         }
 184                 } catch (Exception e) {
 185                         loaded = false;
 186                 }
 187
 188                 return loaded;
 189         }
 190
 191         private synchronized int getValue(String parameter) {
 192                 int value = -1;
 193
 194                 try {
 195                         String read;
 196
 197                         FileReader fr = new FileReader("/sys/devices/debounce/" + parameter);
 198                         BufferedReader fbuf = new BufferedReader(fr);
 199
 200                         read = fbuf.readLine();
 201                         if (read != null) {
 202                                 value = Integer.parseInt(read.trim());
 203                         }
 204
 205                         fbuf.close();
 206                 } catch (Exception e) {}
 207
 208                 return value;
 209         }
 210
 211         private synchronized void setValue(String parameter, int value) {
 212                 if (!isLoaded()) {
 213                         return;
 214                 }
 215
 216                 try {
 217                         FileWriter fw = new FileWriter("/sys/devices/debounce/" + parameter);
 218                         BufferedWriter fbuf = new BufferedWriter(fw);
 219
 220                         fbuf.write((new Integer(value)).toString());
 221
 222                         fbuf.close();
 223                 } catch (Exception e) {}
 224         }
 225
 226         public synchronized int getDelay() {
 227                 return getValue("debounce_delay");
 228         }
 229
 230         public synchronized void setDelay(int debounce_delay) {
 231                 setValue("debounce_delay", debounce_delay);
 232         }
 233
 234         public synchronized int getSettle() {
 235                 return getValue("settle_time");
 236         }
 237
 238         public synchronized void setSettle(int settle_time) {
 239                 setValue("settle_time", settle_time);
 240         }
 241
 242         public synchronized int getPoll() {
 243                 return getValue("poll_time");
 244         }
 245
 246         public synchronized void setPoll(int poll_time) {
 247                 setValue("poll_time", poll_time);
 248         }
 249
 250         public synchronized boolean getHwDebounce() {
 251                 if (getValue("hw_debounce") == 1)
 252                         return true;
 253
 254                 return false;
 255         }
 256
 257         public synchronized void setHwDebounce(boolean enable) {
 258                 if (enable)
 259                         setValue("hw_debounce", 1);
 260                 else
 261                         setValue("hw_debounce", 0);
 262         }
 263
 264         public synchronized int getHwDebounceTime() {
 265                 return getValue("hw_debounce_time");
 266         }
 267
 268         public synchronized void setHwDebounceTime(int time) {
 269                 setValue("hw_debounce_time", time);
 270         }
 271
 272         public synchronized boolean getDriveInactive() {
 273                 if (getValue("drive_inactive_flag") == 1)
 274                         return true;
 275
 276                 return false;
 277         }
 278
 279         public synchronized void setDriveInactive(boolean enable) {
 280                 if (enable)
 281                         setValue("drive_inactive_flag", 1);
 282                 else
 283                         setValue("drive_inactive_flag", 0);
 284         }
 285
 286         public synchronized boolean getActiveHigh() {
 287                 if (getValue("active_high_flag") == 1)
 288                         return true;
 289
 290                 return false;
 291         }
 292
 293         public synchronized void setActiveHigh(boolean enable) {
 294                 if (enable)
 295                         setValue("active_high_flag", 1);
 296                 else
 297                         setValue("active_high_flag", 0);
 298         }
 299
 300         public synchronized int getSavedDelay() {
 301                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 302
 303                 return settings.getInt("debounce_delay", 15);
 304         }
 305
 306         public synchronized void setSavedDelay(int delay) {
 307                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 308                 SharedPreferences.Editor editor = settings.edit();
 309
 310                 editor.putInt("debounce_delay", delay);
 311                 editor.commit();
 312         }
 313
 314         public synchronized int getSavedSettle() {
 315                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 316
 317                 return settings.getInt("settle_time", 40);
 318         }
 319
 320         public synchronized void setSavedSettle(int settle) {
 321                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 322                 SharedPreferences.Editor editor = settings.edit();
 323
 324                 editor.putInt("settle_time", settle);
 325                 editor.commit();
 326         }
 327
 328         public synchronized int getSavedPoll() {
 329                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 330
 331                 return settings.getInt("poll_time", 20);
 332         }
 333
 334         public synchronized void setSavedPoll(int poll) {
 335                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 336                 SharedPreferences.Editor editor = settings.edit();
 337
 338                 editor.putInt("poll_time", poll);
 339                 editor.commit();
 340         }
 341
 342         public synchronized boolean getSavedHwDebounce() {
 343                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 344
 345                 return settings.getBoolean("hw_debounce", false);
 346         }
 347
 348         public synchronized void setSavedHwDebounce(boolean enable) {
 349                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 350                 SharedPreferences.Editor editor = settings.edit();
 351
 352                 editor.putBoolean("hw_debounce", enable);
 353                 editor.commit();
 354         }
 355
 356         public synchronized int getSavedHwDebounceTime() {
 357                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 358
 359                 return settings.getInt("hw_debounce_time", 1);
 360         }
 361
 362         public synchronized void setSavedHwDebounceTime(int time) {
 363                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 364                 SharedPreferences.Editor editor = settings.edit();
 365
 366                 editor.putInt("hw_debounce_time", time);
 367                 editor.commit();
 368         }
 369
 370         public synchronized boolean getSavedDriveInactive() {
 371                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 372
 373                 return settings.getBoolean("drive_inactive", false);
 374         }
 375
 376         public synchronized void setSavedDriveInactive(boolean enable) {
 377                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 378                 SharedPreferences.Editor editor = settings.edit();
 379
 380                 editor.putBoolean("drive_inactive", enable);
 381                 editor.commit();
 382         }
 383
 384         public synchronized boolean getSavedActiveHigh() {
 385                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 386
 387                 return settings.getBoolean("active_high", false);
 388         }
 389
 390         public synchronized void setSavedActiveHigh(boolean enable) {
 391                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 392                 SharedPreferences.Editor editor = settings.edit();
 393
 394                 editor.putBoolean("active_high", enable);
 395                 editor.commit();
 396         }
 397
 398         public synchronized boolean is_safe_to_load() {
 399                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 400                 return settings.getBoolean("safe_to_load", false);
 401         }
 402
 403         public synchronized boolean get_on_boot() {
 404                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 405                 return settings.getBoolean("on_boot", false);
 406         }
 407
 408         public synchronized void set_on_boot(boolean on_boot) {
 409                 SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
 410                 SharedPreferences.Editor editor = settings.edit();
 411
 412                 editor.putBoolean("on_boot", on_boot);
 413                 editor.commit();
 414         }
 415
 416         private synchronized void extractModule() {
 417                 File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
 418
 419                 if (debounce_ko.exists()) {
 420                         return;
 421                 }
 422
 423                 try {
 424                         InputStream apk = ctx.getAssets().open("debounce.ko");
 425                         OutputStream mod = ctx.openFileOutput("debounce.ko.tmp", 0);
 426
 427                         //I assume a page is 4k...
 428                         byte buf[] = new byte[4096];
 429                         int bytes;
 430
 431                         while((bytes = apk.read(buf)) != -1) {
 432                                 mod.write(buf, 0, bytes);
 433                         }
 434
 435                         apk.close();
 436                         mod.close();
 437
 438                         File tmpfile = new File(debounce_ko + ".tmp");
 439                         tmpfile.renameTo(debounce_ko);
 440                 } catch (Exception e) {}
 441         }
 442 }