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