diff options
Diffstat (limited to 'app/src/main/java/se/leap/bitmaskclient/firewall/StartIPv6FirewallTask.java')
-rw-r--r-- | app/src/main/java/se/leap/bitmaskclient/firewall/StartIPv6FirewallTask.java | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/app/src/main/java/se/leap/bitmaskclient/firewall/StartIPv6FirewallTask.java b/app/src/main/java/se/leap/bitmaskclient/firewall/StartIPv6FirewallTask.java new file mode 100644 index 00000000..b01270e0 --- /dev/null +++ b/app/src/main/java/se/leap/bitmaskclient/firewall/StartIPv6FirewallTask.java @@ -0,0 +1,88 @@ +/** + * Copyright (c) 2020 LEAP Encryption Access Project and contributers + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +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 StartIPv6FirewallTask extends AsyncTask<Void, Boolean, Boolean> { + + private WeakReference<FirewallCallback> callbackWeakReference; + + StartIPv6FirewallTask(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); + } + } +} |