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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 | } |