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Prevent OkHttp from making local DNS lookups.

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This commit is contained in:
akwizgran
2017-03-22 15:57:53 +00:00
parent da9cde083f
commit 9c41437870
2 changed files with 25 additions and 0 deletions
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9
bramble-core/src/main/java/org/briarproject/bramble/socks/SocksSocket.java
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@@ -6,9 +6,11 @@ import org.briarproject.bramble.util.IoUtils;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.util.Arrays;
class SocksSocket extends Socket {
@@ -24,6 +26,8 @@ class SocksSocket extends Socket {
"Address type not supported"
};
private static final byte[] UNSPECIFIED_ADDRESS = new byte[4];
private final SocketAddress proxy;
private final int connectToProxyTimeout;
@@ -40,6 +44,11 @@ class SocksSocket extends Socket {
if (!(endpoint instanceof InetSocketAddress))
throw new IllegalArgumentException();
InetSocketAddress inet = (InetSocketAddress) endpoint;
InetAddress address = inet.getAddress();
if (address != null
&& !Arrays.equals(address.getAddress(), UNSPECIFIED_ADDRESS)) {
throw new IllegalArgumentException();
}
String host = inet.getHostName();
if (host.length() > 255) throw new IllegalArgumentException();
int port = inet.getPort();