1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
package se.leap.bitmaskclient.firewall;
import android.os.AsyncTask;
import android.util.Log;
import java.lang.ref.WeakReference;
import static se.leap.bitmaskclient.firewall.FirewallManager.BITMASK_CHAIN;
import static se.leap.bitmaskclient.utils.Cmd.runBlockingCmd;
class StartFirewallTask extends AsyncTask<Void, Boolean, Boolean> {
private WeakReference<FirewallCallback> callbackWeakReference;
StartFirewallTask(FirewallCallback callback) {
callbackWeakReference = new WeakReference<>(callback);
}
@Override
protected Boolean doInBackground(Void... voids) {
StringBuilder log = new StringBuilder();
String[] bitmaskChain = new String[]{
"su",
"id",
"ip6tables --list " + BITMASK_CHAIN };
try {
boolean hasBitmaskChain = runBlockingCmd(bitmaskChain, log) == 0;
boolean allowSu = log.toString().contains("uid=0");
callbackWeakReference.get().onSuRequested(allowSu);
if (!allowSu) {
return false;
}
boolean success;
log = new StringBuilder();
if (!hasBitmaskChain) {
String[] createChainAndRules = new String[]{
"su",
"ip6tables --new-chain " + BITMASK_CHAIN,
"ip6tables --insert OUTPUT --jump " + BITMASK_CHAIN,
"ip6tables --append " + BITMASK_CHAIN + " -p tcp --jump REJECT",
"ip6tables --append " + BITMASK_CHAIN + " -p udp --jump REJECT"
};
success = runBlockingCmd(createChainAndRules, log) == 0;
Log.d(FirewallManager.TAG, "added " + BITMASK_CHAIN + " to ip6tables: " + success);
Log.d(FirewallManager.TAG, log.toString());
return success;
} else {
String[] addRules = new String[] {
"su",
"ip6tables --append " + BITMASK_CHAIN + " -p tcp --jump REJECT",
"ip6tables --append " + BITMASK_CHAIN + " -p udp --jump REJECT" };
return runBlockingCmd(addRules, log) == 0;
}
} catch (Exception e) {
e.printStackTrace();
Log.e(FirewallManager.TAG, log.toString());
}
return false;
}
@Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
FirewallCallback callback = callbackWeakReference.get();
if (callback != null) {
callback.onFirewallStarted(result);
}
}
}
|
