UDP Wifi sniffen

1public class MainActivity extends Activity implements OnClickListener {
2
3 String testString ="Ich sende einen Broadcast";
4
5 int port = 12345;
6 InetAddress address;
7 DatagramSocket s = null;
8 DatagramPacket p;
9 Button broadcast1;
10
11
12 @Override
13 protected void onCreate(Bundle savedInstanceState) {
14 super.onCreate(savedInstanceState);
15 setContentView(R.layout.activity_main);
16
17 broadcast1 = (Button)findViewById(R.id.Broadcast1);
18 broadcast1.setOnClickListener(this);
19
20 Log.d("START", "Program start");
21}
22
23 class DownloadFileFromURL extends AsyncTask<String, String, String> {
24
25 @Override
26 protected void onPreExecute() {
27 super.onPreExecute();
28 Toast.makeText(getApplicationContext(), "Start sending", Toast.LENGTH_SHORT).show();
29 }
30
31 @Override
32 protected String doInBackground(String... f_url) {
33
34 try {
35 String messageStr="Hello Android!";
36
37 DatagramSocket s = new DatagramSocket(port);
38 s.setBroadcast(true);
39 int msg_length=messageStr.length();
40 byte[] message = messageStr.getBytes();
41 DatagramPacket p = new DatagramPacket(message, msg_length,getBroadcastAddress(),port);
42 s.send(p);
43
44 } catch (IOException e) {
45 e.printStackTrace();
46 }
47 return null;
48 }
49
50
51 protected void onProgressUpdate(String... progress) {
52 }
53
54 @Override
55 protected void onPostExecute(String file_url) {
56 Toast.makeText(getApplicationContext(), "Message sent", Toast.LENGTH_SHORT).show();
57 }
58 }
59
60
61
62 private InetAddress getBroadcastAddress() throws IOException {
63
64 WifiManager wifi = (WifiManager) getSystemService(WIFI_SERVICE);
65 DhcpInfo dhcp = wifi.getDhcpInfo();
66
67 if (dhcp == null) {
68 Log.w("FAIL", "Could not get dhcp info");
69 return null;
70 }
71
72 Log.d("ADDRESS", "Broadkastaddresse wird ermittelt");
73 int broadcast = (dhcp.ipAddress & dhcp.netmask) | ~dhcp.netmask;
74 byte[] quads = new byte[4];
75 for (int k = 0; k < 4; k++)
76 quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);
77 Log.d("ADDRESS", "Broadcast Address ermittelt: "+InetAddress.getByAddress(quads));
78 return InetAddress.getByAddress(quads);
79 }
80
81
82 @Override
83 public void onClick(View v) {
84 DownloadFileFromURL test = new DownloadFileFromURL();
85 test.execute();
86 }
87}

104-01 14:14:04.766: D/AndroidRuntime(4635): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
204-01 14:14:04.766: D/AndroidRuntime(4635): CheckJNI is OFF
304-01 14:14:04.771: D/dalvikvm(4635): Trying to load lib libjavacore.so 0x0
404-01 14:14:04.776: D/dalvikvm(4635): Added shared lib libjavacore.so 0x0
504-01 14:14:04.781: D/dalvikvm(4635): Trying to load lib libnativehelper.so 0x0
604-01 14:14:04.781: D/dalvikvm(4635): Added shared lib libnativehelper.so 0x0
704-01 14:14:04.891: D/AndroidRuntime(4635): Calling main entry com.android.commands.pm.Pm
804-01 14:14:04.896: W/ActivityManager(391): No content provider found for permission revoke: file:///data/local/tmp/SendReceiveBroadcast.apk
904-01 14:14:04.901: D/Finsky(1173): [1] PackageVerificationReceiver.onReceive: Verification requested, id = 12
1004-01 14:14:04.901: D/Finsky(1173): [1] WorkerTask.onPreExecute: Verification Requested for id = 12, data=file:///data/local/tmp/SendReceiveBroadcast.apk flags=114
1104-01 14:14:05.061: D/Finsky(1173): [1] 2.onResponse: Verification id=12 response=0
1204-01 14:14:05.066: D/Finsky(1173): [1] PackageVerificationReceiver.onReceive: Verification requested, id = 12
1304-01 14:14:05.076: W/ActivityManager(391): No content provider found for permission revoke: file:///data/local/tmp/SendReceiveBroadcast.apk
1404-01 14:14:05.076: I/PackageManager(391): Copying native libraries to /data/app-lib/vmdl1551217785
1504-01 14:14:05.116: I/PackageManager(391): Removing non-system package:com.example.sendreceivebroadcast
1604-01 14:14:05.116: I/ActivityManager(391): Force stopping package com.example.sendreceivebroadcast appid=10065 user=-1
1704-01 14:14:05.116: I/ActivityManager(391): Killing proc 4610:com.example.sendreceivebroadcast/u0a10065: force stop com.example.sendreceivebroadcast
1804-01 14:14:05.116: W/ActivityManager(391): Force removing ActivityRecord{42973c30 u0 com.example.sendreceivebroadcast/.MainActivity}: app died, no saved state
1904-01 14:14:05.156: I/WindowState(391): WIN DEATH: Window{429e6fd8 u0 com.example.sendreceivebroadcast/com.example.sendreceivebroadcast.MainActivity}
2004-01 14:14:05.176: I/PackageManager(391): Package com.example.sendreceivebroadcast codePath changed from /data/app/com.example.sendreceivebroadcast-2.apk to /data/app/com.example.sendreceivebroadcast-1.apk; Retaining data and using new
2104-01 14:14:05.181: I/PackageManager(391): Running dexopt on: com.example.sendreceivebroadcast
2204-01 14:14:05.211: D/mali_winsys(602): new_window_surface returns 0x3000
2304-01 14:14:05.211: W/InputMethodManagerService(391): Got RemoteException sending setActive(false) notification to pid 4610 uid 10065
2404-01 14:14:05.361: D/dalvikvm(4646): DexOpt: load 33ms, verify+opt 100ms, 809868 bytes
2504-01 14:14:05.386: I/ActivityManager(391): Force stopping package com.example.sendreceivebroadcast appid=10065 user=-1
2604-01 14:14:05.386: W/PackageManager(391): Code path for pkg : com.example.sendreceivebroadcast changing from /data/app/com.example.sendreceivebroadcast-2.apk to /data/app/com.example.sendreceivebroadcast-1.apk
2704-01 14:14:05.386: W/PackageManager(391): Resource path for pkg : com.example.sendreceivebroadcast changing from /data/app/com.example.sendreceivebroadcast-2.apk to /data/app/com.example.sendreceivebroadcast-1.apk
2804-01 14:14:05.416: D/PackageManager(391): New package installed in /data/app/com.example.sendreceivebroadcast-1.apk
2904-01 14:14:05.461: I/ActivityManager(391): Force stopping package com.example.sendreceivebroadcast appid=10065 user=0
3004-01 14:14:05.491: D/dalvikvm(602): GC_EXPLICIT freed 776K, 22% free 25011K/31724K, paused 2ms+3ms, total 29ms
3104-01 14:14:05.506: D/dalvikvm(672): GC_EXPLICIT freed 225K, 5% free 8988K/9384K, paused 1ms+2ms, total 28ms
3204-01 14:14:05.521: I/InputReader(391): Reconfiguring input devices. changes=0x00000010
3304-01 14:14:05.556: I/InputReader(391): Reconfiguring input devices. changes=0x00000010
3404-01 14:14:05.581: W/ContextImpl(4447): Calling a method in the system process without a qualified user: android.app.ContextImpl.startService:1352 android.content.ContextWrapper.startService:450 android.content.ContextWrapper.startService:450 com.android.keychain.KeyChainBroadcastReceiver.onReceive:12 android.app.ActivityThread.handleReceiver:2376
3504-01 14:14:05.626: D/dalvikvm(391): GC_EXPLICIT freed 1613K, 18% free 19243K/23412K, paused 11ms+33ms, total 112ms
3604-01 14:14:05.641: D/dalvikvm(4112): GC_CONCURRENT freed 304K, 5% free 8948K/9392K, paused 15ms+2ms, total 51ms
3704-01 14:14:05.661: D/dalvikvm(1173): GC_EXPLICIT freed 466K, 15% free 19768K/23028K, paused 2ms+20ms, total 197ms
3804-01 14:14:05.751: D/dalvikvm(4141): GC_CONCURRENT freed 364K, 5% free 8711K/9104K, paused 3ms+1ms, total 24ms
3904-01 14:14:05.831: D/dalvikvm(391): GC_EXPLICIT freed 741K, 19% free 19194K/23412K, paused 13ms+11ms, total 181ms
4004-01 14:14:05.836: D/AndroidRuntime(4635): Shutting down VM
4104-01 14:14:05.836: D/dalvikvm(4635): GC_CONCURRENT freed 95K, 18% free 468K/568K, paused 0ms+0ms, total 1ms
4204-01 14:14:05.836: D/jdwp(4635): Got wake-up signal, bailing out of select
4304-01 14:14:05.841: D/dalvikvm(4635): Debugger has detached; object registry had 1 entries
4404-01 14:14:06.246: D/AndroidRuntime(4663): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
4504-01 14:14:06.246: D/AndroidRuntime(4663): CheckJNI is OFF
4604-01 14:14:06.251: D/dalvikvm(4663): Trying to load lib libjavacore.so 0x0
4704-01 14:14:06.256: D/dalvikvm(4663): Added shared lib libjavacore.so 0x0
4804-01 14:14:06.261: D/dalvikvm(4663): Trying to load lib libnativehelper.so 0x0
4904-01 14:14:06.261: D/dalvikvm(4663): Added shared lib libnativehelper.so 0x0
5004-01 14:14:06.371: D/AndroidRuntime(4663): Calling main entry com.android.commands.am.Am
5104-01 14:14:06.371: D/dalvikvm(4663): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods
5204-01 14:14:06.376: I/ActivityManager(391): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.sendreceivebroadcast/.MainActivity} from pid 4663
5304-01 14:14:06.396: D/AndroidRuntime(4663): Shutting down VM
5404-01 14:14:06.396: D/dalvikvm(4663): GC_CONCURRENT freed 96K, 17% free 500K/600K, paused 1ms+0ms, total 3ms
5504-01 14:14:06.396: D/jdwp(4663): Got wake-up signal, bailing out of select
5604-01 14:14:06.396: D/dalvikvm(4663): Debugger has detached; object registry had 1 entries
5704-01 14:14:06.401: D/dalvikvm(4673): Late-enabling CheckJNI
5804-01 14:14:06.401: I/ActivityManager(391): Start proc com.example.sendreceivebroadcast for activity com.example.sendreceivebroadcast/.MainActivity: pid=4673 uid=10065 gids={50065, 3003, 1015, 1028}
5904-01 14:14:06.476: D/START(4673): Program start
6004-01 14:14:06.526: D/libEGL(4673): loaded /vendor/lib/egl/libGLES_mali.so
6104-01 14:14:06.551: D/mali_winsys(4673): new_window_surface returns 0x3000
6204-01 14:14:06.551: D/OpenGLRenderer(4673): Enabling debug mode 0
6304-01 14:14:06.676: I/ActivityManager(391): Displayed com.example.sendreceivebroadcast/.MainActivity: +286ms
6404-01 14:14:20.811: D/Finsky(1173): [1] 5.onFinished: Installation state replication succeeded.
6504-01 14:15:42.151: D/ADDRESS(4673): Broadkastaddresse wird ermittelt
6604-01 14:15:42.151: D/ADDRESS(4673): Broadcast Address ermittelt: /10.196.15.255
6704-01 14:17:37.946: W/ThrottleService(391): unable to find stats for iface rmnet0