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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.BufferedReader; | |
8 | ||
9 | import android.content.Context; | |
10 | ||
11 | public class DebounceModuleHelper | |
12 | { | |
13 | private Context ctx; | |
14 | ||
15 | public DebounceModuleHelper(Context context) { | |
16 | ctx = context; | |
17 | } | |
18 | ||
19 | public void loadModule() { | |
20 | loadModule(10); | |
21 | } | |
22 | ||
23 | public void loadModule(int delay) { | |
24 | File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko"); | |
25 | ||
26 | extractModule(); | |
27 | ||
28 | // FIXME: Read settings from database... | |
29 | ||
30 | try { | |
31 | Process insmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/insmod " + debounce_ko + " debounce_delay=" + delay}); | |
32 | insmod.waitFor(); | |
33 | } catch (Exception e) {} | |
34 | } | |
35 | ||
36 | public void unloadModule() { | |
37 | try { | |
38 | Process rmmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/rmmod debounce"}); | |
39 | rmmod.waitFor(); | |
40 | } catch (Exception e) {} | |
41 | } | |
42 | ||
43 | public boolean isLoaded() { | |
44 | boolean loaded = false; | |
45 | try { | |
46 | String read; | |
47 | ||
48 | FileReader modules = new FileReader("/proc/modules"); | |
49 | BufferedReader modules_buf = new BufferedReader(modules); | |
50 | ||
51 | while((read = modules_buf.readLine()) != null) { | |
52 | if (read.regionMatches(0, "debounce", 0, 8)) { | |
53 | loaded = true; | |
54 | } | |
55 | } | |
56 | ||
57 | } catch (Exception e) { | |
58 | loaded = false; | |
59 | } | |
60 | ||
61 | return loaded; | |
62 | } | |
63 | ||
64 | public int getDelay() { | |
65 | int debounce_delay = -1; | |
66 | ||
67 | try { | |
68 | String read; | |
69 | ||
70 | FileReader delay = new FileReader("/sys/module/debounce/parameters/debounce_delay"); | |
71 | BufferedReader delay_buf = new BufferedReader(delay); | |
72 | ||
73 | read = delay_buf.readLine(); | |
74 | if (read != null) { | |
75 | debounce_delay = Integer.parseInt(read.trim()); | |
76 | } | |
77 | } catch (Exception e) {} | |
78 | ||
79 | return debounce_delay; | |
80 | } | |
81 | ||
82 | private synchronized void extractModule() { | |
83 | File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko"); | |
84 | ||
85 | if (debounce_ko.exists()) { | |
86 | return; | |
87 | } | |
88 | ||
89 | try { | |
90 | InputStream apk = ctx.getAssets().open("debounce.ko"); | |
91 | OutputStream mod = ctx.openFileOutput("debounce.ko.tmp", 0); | |
92 | ||
93 | //I assume a page is 4k... | |
94 | byte buf[] = new byte[4096]; | |
95 | int bytes; | |
96 | ||
97 | while((bytes = apk.read(buf)) != -1) { | |
98 | mod.write(buf, 0, bytes); | |
99 | } | |
100 | ||
101 | apk.close(); | |
102 | mod.close(); | |
103 | ||
104 | File tmpfile = new File(debounce_ko + ".tmp"); | |
105 | tmpfile.renameTo(debounce_ko); | |
106 | } catch (Exception e) {} | |
107 | } | |
108 | } |