mirror of https://github.com/M66B/NetGuard.git
131 lines
4.8 KiB
Java
131 lines
4.8 KiB
Java
package eu.faircode.netguard;
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/*
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This file is part of NetGuard.
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NetGuard is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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NetGuard is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with NetGuard. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2015-2019 by Marcel Bokhorst (M66B)
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*/
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import android.app.Activity;
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import android.os.Bundle;
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import android.text.TextUtils;
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import android.util.Log;
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import android.view.View;
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import android.widget.Button;
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import android.widget.TextView;
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import java.net.InetAddress;
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public class ActivityForwardApproval extends Activity {
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private static final String TAG = "NetGuard.Forward";
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private static final String ACTION_START_PORT_FORWARD = "eu.faircode.netguard.START_PORT_FORWARD";
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private static final String ACTION_STOP_PORT_FORWARD = "eu.faircode.netguard.STOP_PORT_FORWARD";
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static {
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try {
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System.loadLibrary("netguard");
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} catch (UnsatisfiedLinkError ignored) {
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System.exit(1);
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}
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.forwardapproval);
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final int protocol = getIntent().getIntExtra("protocol", 0);
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final int dport = getIntent().getIntExtra("dport", 0);
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String addr = getIntent().getStringExtra("raddr");
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final int rport = getIntent().getIntExtra("rport", 0);
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final int ruid = getIntent().getIntExtra("ruid", 0);
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final String raddr = (addr == null ? "127.0.0.1" : addr);
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try {
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InetAddress iraddr = InetAddress.getByName(raddr);
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if (rport < 1024 && (iraddr.isLoopbackAddress() || iraddr.isAnyLocalAddress()))
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throw new IllegalArgumentException("Port forwarding to privileged port on local address not possible");
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} catch (Throwable ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
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finish();
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}
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String pname;
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if (protocol == 6)
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pname = getString(R.string.menu_protocol_tcp);
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else if (protocol == 17)
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pname = getString(R.string.menu_protocol_udp);
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else
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pname = Integer.toString(protocol);
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TextView tvForward = findViewById(R.id.tvForward);
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if (ACTION_START_PORT_FORWARD.equals(getIntent().getAction()))
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tvForward.setText(getString(R.string.msg_start_forward,
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pname, dport, raddr, rport,
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TextUtils.join(", ", Util.getApplicationNames(ruid, this))));
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else
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tvForward.setText(getString(R.string.msg_stop_forward, pname, dport));
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Button btnOk = findViewById(R.id.btnOk);
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Button btnCancel = findViewById(R.id.btnCancel);
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btnOk.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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if (ACTION_START_PORT_FORWARD.equals(getIntent().getAction())) {
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/*
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am start -a eu.faircode.netguard.START_PORT_FORWARD \
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-n eu.faircode.netguard/eu.faircode.netguard.ActivityForwardApproval \
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--ei protocol 17 \
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--ei dport 53 \
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--es raddr 8.8.4.4 \
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--ei rport 53 \
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--ei ruid 9999 \
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--user 0
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*/
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Log.i(TAG, "Start forwarding protocol " + protocol + " port " + dport + " to " + raddr + "/" + rport + " uid " + ruid);
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DatabaseHelper dh = DatabaseHelper.getInstance(ActivityForwardApproval.this);
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dh.deleteForward(protocol, dport);
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dh.addForward(protocol, dport, raddr, rport, ruid);
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} else if (ACTION_STOP_PORT_FORWARD.equals(getIntent().getAction())) {
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/*
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am start -a eu.faircode.netguard.STOP_PORT_FORWARD \
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-n eu.faircode.netguard/eu.faircode.netguard.ActivityForwardApproval \
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--ei protocol 17 \
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--ei dport 53 \
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--user 0
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*/
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Log.i(TAG, "Stop forwarding protocol " + protocol + " port " + dport);
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DatabaseHelper.getInstance(ActivityForwardApproval.this).deleteForward(protocol, dport);
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}
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ServiceSinkhole.reload("forwarding", ActivityForwardApproval.this, false);
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finish();
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}
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});
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btnCancel.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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finish();
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}
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});
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}
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}
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