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