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Code Issues Projects Releases Wiki Activity

Scrub IP addresses before logging

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This commit is contained in:
Torsten Grote
2016-08-23 14:56:48 -03:00
parent ca094620d8
commit 8b56e082b3
5 changed files with 97 additions and 35 deletions
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15
briar-core/src/org/briarproject/plugins/tcp/LanTcpPlugin.java
View File

@@ -29,6 +29,7 @@ import java.util.logging.Logger;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import static org.briarproject.util.PrivacyUtils.scrubSocketAddress;
class LanTcpPlugin extends TcpPlugin {
@@ -177,7 +178,7 @@ class LanTcpPlugin extends TcpPlugin {
break;
} catch (IOException e) {
if (LOG.isLoggable(INFO))
LOG.info("Failed to bind " + addr);
LOG.info("Failed to bind " + scrubSocketAddress(addr));
tryToClose(ss);
}
}
@@ -205,20 +206,24 @@ class LanTcpPlugin extends TcpPlugin {
if (!isConnectable(remote)) {
if (LOG.isLoggable(INFO)) {
SocketAddress local = socket.getLocalSocketAddress();
LOG.info(remote + " is not connectable from " + local);
LOG.info(scrubSocketAddress(remote) +
" is not connectable from " +
scrubSocketAddress(local));
}
return null;
}
Socket s = new Socket();
try {
if (LOG.isLoggable(INFO)) LOG.info("Connecting to " + remote);
if (LOG.isLoggable(INFO))
LOG.info("Connecting to " + scrubSocketAddress(remote));
s.connect(remote);
s.setSoTimeout(socketTimeout);
if (LOG.isLoggable(INFO)) LOG.info("Connected to " + remote);
if (LOG.isLoggable(INFO))
LOG.info("Connected to " + scrubSocketAddress(remote));
return new TcpTransportConnection(this, s);
} catch (IOException e) {
if (LOG.isLoggable(INFO))
LOG.info("Could not connect to " + remote);
LOG.info("Could not connect to " + scrubSocketAddress(remote));
return null;
}
}

18
briar-core/src/org/briarproject/plugins/tcp/PortMapperImpl.java
View File

@@ -1,7 +1,9 @@
package org.briarproject.plugins.tcp;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import org.bitlet.weupnp.GatewayDevice;
import org.bitlet.weupnp.GatewayDiscover;
import org.briarproject.api.lifecycle.ShutdownManager;
import org.xml.sax.SAXException;
import java.io.IOException;
import java.net.InetAddress;
@@ -10,10 +12,9 @@ import java.util.logging.Logger;
import javax.xml.parsers.ParserConfigurationException;
import org.bitlet.weupnp.GatewayDevice;
import org.bitlet.weupnp.GatewayDiscover;
import org.briarproject.api.lifecycle.ShutdownManager;
import org.xml.sax.SAXException;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import static org.briarproject.util.PrivacyUtils.scrubInetAddress;
class PortMapperImpl implements PortMapper {
@@ -35,7 +36,7 @@ class PortMapperImpl implements PortMapper {
InetAddress internal = gateway.getLocalAddress();
if (internal == null) return null;
if (LOG.isLoggable(INFO))
LOG.info("Internal address " + getHostAddress(internal));
LOG.info("Internal address " + scrubInetAddress(internal));
boolean succeeded = false;
InetAddress external = null;
try {
@@ -50,7 +51,8 @@ class PortMapperImpl implements PortMapper {
}
String externalString = gateway.getExternalIPAddress();
if (LOG.isLoggable(INFO))
LOG.info("External address " + externalString);
LOG.info(
"External address " + scrubInetAddress(externalString));
if (externalString != null)
external = InetAddress.getByName(externalString);
} catch (IOException e) {

31
briar-core/src/org/briarproject/plugins/tcp/TcpPlugin.java
View File

@@ -30,6 +30,7 @@ import java.util.regex.Pattern;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import static org.briarproject.util.PrivacyUtils.scrubSocketAddress;
abstract class TcpPlugin implements DuplexPlugin {
@@ -107,14 +108,15 @@ abstract class TcpPlugin implements DuplexPlugin {
public void run() {
if (!running) return;
ServerSocket ss = null;
for (SocketAddress addr : getLocalSocketAddresses()) {
for (InetSocketAddress addr : getLocalSocketAddresses()) {
try {
ss = new ServerSocket();
ss.bind(addr);
break;
} catch (IOException e) {
if (LOG.isLoggable(INFO))
LOG.info("Failed to bind " + addr);
LOG.info("Failed to bind " +
scrubSocketAddress(addr));
tryToClose(ss);
}
}
@@ -128,9 +130,11 @@ abstract class TcpPlugin implements DuplexPlugin {
}
socket = ss;
backoff.reset();
SocketAddress local = ss.getLocalSocketAddress();
setLocalSocketAddress((InetSocketAddress) local);
if (LOG.isLoggable(INFO)) LOG.info("Listening on " + local);
InetSocketAddress local =
(InetSocketAddress) ss.getLocalSocketAddress();
setLocalSocketAddress(local);
if (LOG.isLoggable(INFO))
LOG.info("Listening on " + scrubSocketAddress(local));
callback.transportEnabled();
acceptContactConnections();
}
@@ -166,7 +170,8 @@ abstract class TcpPlugin implements DuplexPlugin {
return;
}
if (LOG.isLoggable(INFO))
LOG.info("Connection from " + s.getRemoteSocketAddress());
LOG.info("Connection from " +
scrubSocketAddress(s.getRemoteSocketAddress()));
backoff.reset();
TcpTransportConnection conn = new TcpTransportConnection(this, s);
callback.incomingConnectionCreated(conn);
@@ -223,20 +228,25 @@ abstract class TcpPlugin implements DuplexPlugin {
if (!isConnectable(remote)) {
if (LOG.isLoggable(INFO)) {
SocketAddress local = socket.getLocalSocketAddress();
LOG.info(remote + " is not connectable from " + local);
LOG.info(scrubSocketAddress(remote) +
" is not connectable from " +
scrubSocketAddress(local));
}
continue;
}
Socket s = new Socket();
try {
if (LOG.isLoggable(INFO)) LOG.info("Connecting to " + remote);
if (LOG.isLoggable(INFO))
LOG.info("Connecting to " + scrubSocketAddress(remote));
s.connect(remote);
s.setSoTimeout(socketTimeout);
if (LOG.isLoggable(INFO)) LOG.info("Connected to " + remote);
if (LOG.isLoggable(INFO))
LOG.info("Connected to " + scrubSocketAddress(remote));
return new TcpTransportConnection(this, s);
} catch (IOException e) {
if (LOG.isLoggable(INFO))
LOG.info("Could not connect to " + remote);
LOG.info("Could not connect to " +
scrubSocketAddress(remote));
}
}
return null;
@@ -255,6 +265,7 @@ abstract class TcpPlugin implements DuplexPlugin {
return new InetSocketAddress(a, p);
} catch (UnknownHostException e) {
if (LOG.isLoggable(WARNING))
// not scrubbing to enable us to find the problem
LOG.warning("Invalid address: " + addr);
return null;
} catch (NumberFormatException e) {

48
briar-core/src/org/briarproject/util/PrivacyUtils.java
View File

@@ -1,9 +1,57 @@
package org.briarproject.util;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
public class PrivacyUtils {
public static String scrubOnion(String onion) {
// keep first three characters of onion address
return onion.substring(0, 3) + "[_scrubbed_]";
}
public static String scrubMacAddress(String address) {
if (address == null) return null;
// this is a fake address we need to know about
if (address.equals("02:00:00:00:00:00")) return address;
// keep first and last octet of MAC address
return address.substring(0, 3) +
"[scrubbed]" +
address.substring(14, 17);
}
public static String scrubInetAddress(InetAddress address) {
// don't scrub link and site local addresses
if (address.isLinkLocalAddress() || address.isSiteLocalAddress())
return address.toString();
// completely scrub IPv6 addresses
if (address instanceof Inet6Address) return "[scrubbed]";
// keep first and last octet of IPv4 addresses
return scrubInetAddress(address.toString());
}
public static String scrubInetAddress(String address) {
if (address == null) return null;
int firstDot = address.indexOf(".");
if (firstDot == -1) return "[scrubbed]";
String prefix = address.substring(0, firstDot + 1);
int lastDot = address.lastIndexOf(".");
String suffix = address.substring(lastDot, address.length());
return prefix + "[scrubbed]" + suffix;
}
public static String scrubSocketAddress(InetSocketAddress address) {
InetAddress inetAddress = address.getAddress();
return scrubInetAddress(inetAddress);
}
public static String scrubSocketAddress(SocketAddress address) {
if (address instanceof InetSocketAddress)
return scrubSocketAddress((InetSocketAddress) address);
return scrubInetAddress(address.toString());
}
}