initial packet to uid mapping (2e36ec30) · Commits · ankitgusai19 / onionmasq

android/ArtiToyVPN/.idea/deploymentTargetDropDown.xml

deleted100644 → 0

+0 −17

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		<?xml version="1.0" encoding="UTF-8"?>
		<project version="4">
		<component name="deploymentTargetDropDown">
		<runningDeviceTargetSelectedWithDropDown>
		<Target>
		<type value="RUNNING_DEVICE_TARGET" />
		<deviceKey>
		<Key>
		<type value="SERIAL_NUMBER" />
		<value value="LGH8507d6f869b" />
		</Key>
		</deviceKey>
		</Target>
		</runningDeviceTargetSelectedWithDropDown>
		<timeTargetWasSelectedWithDropDown value="2022-02-16T22:41:20.375263Z" />
		</component>
		</project>
		No newline at end of file

android/ArtiToyVPN/app/build.gradle

+2 −1

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		@@ -39,7 +39,8 @@ dependencies {
		implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
		implementation 'androidx.navigation:navigation-fragment:2.3.5'
		implementation 'androidx.navigation:navigation-ui:2.3.5'
		testImplementation 'junit:junit:4.+'
		//testImplementation 'junit:junit:4.+'
		testImplementation 'androidx.test.ext:junit:1.1.3'
		androidTestImplementation 'androidx.test.ext:junit:1.1.3'
		androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
		}
		No newline at end of file

android/ArtiToyVPN/app/src/androidTest/java/org/torproject/artitoyvpn/capture/PacketUtilsTest.java

0 → 100644

+18 −0

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		package org.torproject.artitoyvpn.capture;

		import android.content.Context;

		import androidx.test.espresso.internal.inject.InstrumentationContext;
		import androidx.test.platform.app.InstrumentationRegistry;

		import junit.framework.TestCase;

		public class PacketUtilsTest extends TestCase {

		public void testConvertHexToIP() {
		Context context = InstrumentationRegistry.getInstrumentation().getContext();
		PacketUtils packetUtils = new PacketUtils(context);
		assertEquals("127.0.0.1", packetUtils.convertHexToIP("0100007F"));
		assertEquals("192.168.1.38", packetUtils.convertHexToIP("2601A8C0"));
		}
		}
		No newline at end of file

android/ArtiToyVPN/app/src/main/AndroidManifest.xml

+3 −0

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		<?xml version="1.0" encoding="utf-8"?>
		<manifest xmlns:android="http://schemas.android.com/apk/res/android"
		xmlns:tools="http://schemas.android.com/tools"
		package="org.torproject.artitoyvpn">
		<uses-permission android:name="android.permission.INTERNET" />
		<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
		@@ -8,6 +9,8 @@
		<uses-permission android:name="android.permission.VIBRATE" />
		<uses-permission android:name="android.permission.WAKE_LOCK" />
		<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
		<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
		tools:ignore="QueryAllPackagesPermission" />
		<application
		android:name=".ArtiToyVPNApp"
		android:allowBackup="true"

android/ArtiToyVPN/app/src/main/java/org/torproject/artitoyvpn/capture/PacketUtils.java

0 → 100644

+164 −0

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		package org.torproject.artitoyvpn.capture;

		import android.content.Context;
		import android.net.ConnectivityManager;
		import android.os.Build;
		import android.util.Log;

		import org.torproject.artitoyvpn.R;

		import java.io.BufferedReader;
		import java.io.FileReader;
		import java.net.InetSocketAddress;

		public class PacketUtils {
		public static final int PROTOCOL_IPV6_HOPOPT = 0;
		public static final int PROTOCOL_ICMP = 1;
		public static final int PROTOCOL_TCP = 6;
		public static final int PROTOCOL_UDP = 17;

		public static final int INDEX_UID_COL = 7;
		public static final int INDEX_LOCAL_ADDRESS_COL = 1;
		public static final int INDEX_REMOTE_ADDRESS_COL = 2;
		public static final String PROC_TCP_FILE = "/proc/net/tcp";
		public static final String PROC_UDP_FILE = "/proc/net/udp";
		public static final String PROC_ICMP_FILE = "/proc/net/icmp";
		private static final String TAG = PacketUtils.class.getSimpleName();

		private final ConnectivityManager connectivityManager;
		private final Context context;

		public PacketUtils(Context context) {
		this.context = context;
		this.connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		}

		public int getUIDFrom(int protocol, int version, InetSocketAddress source, InetSocketAddress destination) {
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
		return connectivityManager.getConnectionOwnerUid(protocol, source, destination);
		} else {
		return getUIDFromProc(protocol, version, source, destination);
		}
		}

		public String getPackageNameFromUID(int uid) {
		// https://github.com/M66B/NetGuard/blob/master/app/src/main/java/eu/faircode/netguard/Rule.java

		switch (uid) {
		case -1:
		return "invalid UID -1";
		case 0:
		return context.getString(R.string.title_root);
		case 1013:
		return context.getString(R.string.title_mediaserver);
		case 1020:
		return context.getString(R.string.title_multicast_dns_responder);
		case 1021:
		return context.getString(R.string.title_gpsdaemon);
		case 1051:
		return context.getString(R.string.title_dnsdaemon);
		case 9999:
		return context.getString(R.string.title_nobody);
		default:
		String name = context.getPackageManager().getNameForUid(uid);
		return name != null ? name : context.getString(R.string.unknown);
		}
		}

		private int getUIDFromProc(int protocol, int version, InetSocketAddress source, InetSocketAddress destination) {
		int uid = -1;
		try {
		String procFileName = null;
		switch (protocol) {
		case PROTOCOL_TCP:
		procFileName = PROC_TCP_FILE;
		break;
		case PROTOCOL_UDP:
		procFileName = PROC_UDP_FILE;
		break;
		case PROTOCOL_ICMP:
		procFileName = PROC_ICMP_FILE;
		break;
		}
		if (procFileName != null && version == 6) {
		procFileName = procFileName+"6";
		}
		BufferedReader br = new BufferedReader(new FileReader(procFileName));

		//Ignore first line
		String line = br.readLine();
		while ((line = br.readLine()) != null) {
		/**
		* Proc file table column sequence
		* sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
		*/
		String[] parts = line.trim().split("\\s+");
		if (parts.length < 8) {
		Log.w(TAG, "proc line elements < 8: " + line.trim());
		continue;
		}
		String localAddressAndPort = parts[INDEX_LOCAL_ADDRESS_COL];
		if (localAddressAndPort.isEmpty()) {
		Log.w(TAG, "proc line localAddressAndPort is empty: " + line.trim());
		continue;
		}

		String[] localAddressParts = localAddressAndPort.split(":");
		if (localAddressParts.length != 2) {
		Log.w(TAG, "proc line localAddressParts != 2: " + localAddressAndPort);
		continue;
		}
		String address = convertHexToIP(localAddressParts[0]);
		int port = Integer.parseInt(localAddressParts[1], 16);

		if (port == source.getPort() && address.equals(source.getAddress().getHostAddress())) {
		String remoteAddressAndPort = parts[INDEX_REMOTE_ADDRESS_COL];
		if (remoteAddressAndPort.isEmpty()) {
		Log.w(TAG, "proc line remoteAddressAndPort is empty: " + line.trim());
		continue;
		}

		String[] remoteAddressParts = remoteAddressAndPort.split(":");
		if (remoteAddressParts.length != 2) {
		Log.w(TAG, "proc line remoteAddressAndPort != 2: " + remoteAddressAndPort);
		continue;
		}

		String remoteAddress = convertHexToIP(remoteAddressParts[0]);
		int remoteAddressPort = Integer.parseInt(remoteAddressParts[1], 16);
		Log.i(TAG, address + ":" + port + " vs " + source.getAddress().getHostAddress() + ":" + source.getPort() + " and " + remoteAddress + ":" + remoteAddressPort + " vs " + destination.getAddress().getHostAddress() + ":" + destination.getPort());

		if (remoteAddressPort == destination.getPort() && remoteAddress.equals(destination.getAddress().getHostAddress())) {
		uid = Integer.parseInt(parts[INDEX_UID_COL]);
		break;
		}
		}
		}
		br.close();
		} catch (Exception ex) {
		Log.e("ProcFileParser", ex.getMessage());
		}
		return uid;
		}


		/**
		*
		* @param hex expected to be in reverse order
		* @return
		*/
		public String convertHexToIP(String hex) {
		if (hex.length() < 8) {
		return "";
		}
		StringBuilder ip= new StringBuilder();
		for (int j = hex.length() - 2; j >= 0; j-=2) {
		String sub = hex.substring(j, j+2);
		int num = Integer.parseInt(sub, 16);
		ip.append(num).append(".");
		}

		ip = new StringBuilder(ip.substring(0, ip.length() - 1));
		return ip.toString();
		}
		}