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