Switch back to Xerial Snappy Library (#284)

ethereum/p2p/build.gradle

@@ -33,7 +33,7 @@ dependencies {
   implementation 'com.google.guava:guava'
   implementation 'io.vertx:vertx-core'
   implementation 'org.apache.logging.log4j:log4j-api'
-  implementation 'org.iq80.snappy:snappy'
+  implementation 'org.xerial.snappy:snappy-java'
 
   runtime 'org.apache.logging.log4j:log4j-core'
 

ethereum/p2p/src/main/java/tech/pegasys/pantheon/ethereum/p2p/rlpx/framing/Framer.java

@@ -34,7 +34,6 @@ import org.bouncycastle.crypto.engines.AESEngine;
 import org.bouncycastle.crypto.modes.SICBlockCipher;
 import org.bouncycastle.crypto.params.KeyParameter;
 import org.bouncycastle.crypto.params.ParametersWithIV;
-import org.iq80.snappy.CorruptionException;
 
 /**
  * This component is responsible for reading and composing RLPx protocol frames, conformant to the
@@ -260,12 +259,8 @@ public class Framer {
       if (uncompressedLength >= LENGTH_MAX_MESSAGE_FRAME) {
         throw error("Message size %s in excess of maximum length.", uncompressedLength);
       }
-      try {
       final byte[] decompressedMessageData = compressor.decompress(compressedMessageData);
       data = BytesValue.wrap(decompressedMessageData);
-      } catch (final CorruptionException e) {
-        throw new FramingException("Decompression failed", e);
-      }
     } else {
       // Move data to a ByteBuf
       final int messageLength = frameSize - LENGTH_MESSAGE_ID;

ethereum/p2p/src/main/java/tech/pegasys/pantheon/ethereum/p2p/rlpx/framing/SnappyCompressor.java

@@ -14,7 +14,9 @@ package tech.pegasys.pantheon.ethereum.p2p.rlpx.framing;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
-import org.iq80.snappy.Snappy;
+import java.io.IOException;
+
+import org.xerial.snappy.Snappy;
 
 /**
  * A strategy for compressing and decompressing data with the Snappy algorithm.
@@ -25,16 +27,28 @@ public class SnappyCompressor {
 
   public byte[] compress(final byte[] uncompressed) {
     checkNotNull(uncompressed, "input data must not be null");
+    try {
       return Snappy.compress(uncompressed);
+    } catch (final IOException e) {
+      throw new FramingException("Snappy compression failed", e);
+    }
   }
 
   public byte[] decompress(final byte[] compressed) {
     checkNotNull(compressed, "input data must not be null");
-    return Snappy.uncompress(compressed, 0, compressed.length);
+    try {
+      return Snappy.uncompress(compressed);
+    } catch (final IOException e) {
+      throw new FramingException("Snappy decompression failed", e);
+    }
   }
 
   public int uncompressedLength(final byte[] compressed) {
     checkNotNull(compressed, "input data must not be null");
-    return Snappy.getUncompressedLength(compressed, 0);
+    try {
+      return Snappy.uncompressedLength(compressed);
+    } catch (final IOException e) {
+      throw new FramingException("Snappy uncompressedLength failed", e);
+    }
   }
 }

ethereum/p2p/src/test/java/tech/pegasys/pantheon/ethereum/p2p/netty/DeFramerTest.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.pantheon.ethereum.p2p.netty;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+import tech.pegasys.pantheon.ethereum.p2p.api.PeerConnection;
+import tech.pegasys.pantheon.ethereum.p2p.rlpx.framing.Framer;
+import tech.pegasys.pantheon.ethereum.p2p.rlpx.framing.FramingException;
+import tech.pegasys.pantheon.ethereum.p2p.wire.PeerInfo;
+import tech.pegasys.pantheon.ethereum.p2p.wire.messages.DisconnectMessage.DisconnectReason;
+import tech.pegasys.pantheon.util.bytes.BytesValue;
+
+import java.util.Collections;
+import java.util.concurrent.CompletableFuture;
+
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.DecoderException;
+import org.junit.Test;
+
+public class DeFramerTest {
+
+  private final ChannelHandlerContext ctx = mock(ChannelHandlerContext.class);
+  private final Framer framer = mock(Framer.class);
+  private final Callbacks callbacks = mock(Callbacks.class);
+  private final PeerConnection peerConnection = mock(PeerConnection.class);
+  private final CompletableFuture<PeerConnection> connectFuture = new CompletableFuture<>();
+  private final DeFramer deFramer =
+      new DeFramer(
+          framer,
+          Collections.emptyList(),
+          new PeerInfo(5, "abc", Collections.emptyList(), 0, BytesValue.fromHexString("0x01")),
+          callbacks,
+          connectFuture);
+
+  @Test
+  public void shouldDisconnectForBreachOfProtocolWhenFramingExceptionThrown() throws Exception {
+    connectFuture.complete(peerConnection);
+
+    deFramer.exceptionCaught(ctx, new DecoderException(new FramingException("Test")));
+
+    verify(peerConnection).disconnect(DisconnectReason.BREACH_OF_PROTOCOL);
+  }
+}

ethereum/p2p/src/test/java/tech/pegasys/pantheon/ethereum/p2p/rlpx/framing/FramerTest.java

@@ -20,10 +20,13 @@ import static java.util.stream.StreamSupport.stream;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatCode;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
 import tech.pegasys.pantheon.ethereum.p2p.api.MessageData;
 import tech.pegasys.pantheon.ethereum.p2p.rlpx.handshake.HandshakeSecrets;
 import tech.pegasys.pantheon.ethereum.p2p.wire.RawMessage;
+import tech.pegasys.pantheon.ethereum.p2p.wire.messages.DisconnectMessage;
+import tech.pegasys.pantheon.ethereum.p2p.wire.messages.DisconnectMessage.DisconnectReason;
 import tech.pegasys.pantheon.util.bytes.BytesValue;
 
 import java.io.IOException;
@@ -34,8 +37,8 @@ import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
-import org.iq80.snappy.Snappy;
 import org.junit.Test;
+import org.xerial.snappy.Snappy;
 
 public class FramerTest {
   private static final ObjectMapper MAPPER = new ObjectMapper();
@@ -195,6 +198,31 @@ public class FramerTest {
     }
   }
 
+  @Test
+  public void shouldThrowFramingExceptionWhenMessageIsNotCompressedButShouldBe() {
+    final HandshakeSecrets secrets =
+        new HandshakeSecrets(
+            BytesValue.fromHexString(
+                    "0x75b3ee95adff0c529a05efd7612aa1dbe5057eb9facdde0dfc837ad143da1d43")
+                .extractArray(),
+            BytesValue.fromHexString(
+                    "0x030dfd1566f4800c4842c177f7d476b64ae2b99a2aa0ab5600aa2f41a8710575")
+                .extractArray(),
+            BytesValue.fromHexString(
+                    "0xc9d3385b1588a5969cba312f8c29bedb4cb9d56ec0cf825436addc1ec644f1d6")
+                .extractArray());
+    final Framer receivingFramer = new Framer(secrets);
+    final Framer sendingFramer = new Framer(secrets);
+
+    // Write a disconnect message with compression disabled.
+    final ByteBuf out = Unpooled.buffer();
+    sendingFramer.frame(DisconnectMessage.create(DisconnectReason.TIMEOUT), out);
+
+    // Then read it with compression enabled.
+    receivingFramer.enableCompression();
+    assertThatThrownBy(() -> receivingFramer.deframe(out)).isInstanceOf(FramingException.class);
+  }
+
   private HandshakeSecrets secretsFrom(final JsonNode td, final boolean swap) {
     final byte[] aes = decodeHexDump(td.get("aes_secret").asText());
     final byte[] mac = decodeHexDump(td.get("mac_secret").asText());

ethereum/p2p/src/test/java/tech/pegasys/pantheon/ethereum/p2p/rlpx/framing/SnappyCompressorTest.java

@@ -14,6 +14,9 @@ package tech.pegasys.pantheon.ethereum.p2p.rlpx.framing;
 
 import static io.netty.buffer.ByteBufUtil.decodeHexDump;
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import tech.pegasys.pantheon.util.bytes.BytesValue;
 
 import java.nio.charset.StandardCharsets;
 
@@ -21,38 +24,55 @@ import org.junit.Test;
 
 public class SnappyCompressorTest {
 
+  private final SnappyCompressor snappy = new SnappyCompressor();
+
   @Test
   public void roundTrip() {
     String input = "Uncompressed sample text for round-trip compression/decompression";
     input = input + input + input + input; // Give it some repetition for good sample data
     final byte[] data = input.getBytes(StandardCharsets.UTF_8);
-    final SnappyCompressor snappy = new SnappyCompressor();
     assertThat(snappy.decompress(snappy.compress(data))).isEqualTo(data);
   }
 
   @Test
   public void roundTripEmptyByteArray() {
     final byte[] data = new byte[0];
-    final SnappyCompressor snappy = new SnappyCompressor();
     assertThat(snappy.decompress(snappy.compress(data))).isEqualTo(data);
   }
 
-  @Test(expected = NullPointerException.class)
+  @Test
   public void compressNull() {
-    final SnappyCompressor snappy = new SnappyCompressor();
-    snappy.compress(null);
+    assertThatThrownBy(() -> snappy.compress(null)).isInstanceOf(NullPointerException.class);
   }
 
-  @Test(expected = NullPointerException.class)
+  @Test
   public void decompressNull() {
-    final SnappyCompressor snappy = new SnappyCompressor();
-    snappy.decompress(null);
+    assertThatThrownBy(() -> snappy.decompress(null)).isInstanceOf(NullPointerException.class);
   }
 
-  @Test(expected = NullPointerException.class)
+  @Test
   public void uncompressedLengthNull() {
-    final SnappyCompressor snappy = new SnappyCompressor();
-    snappy.uncompressedLength(null);
+    assertThatThrownBy(() -> snappy.uncompressedLength(null))
+        .isInstanceOf(NullPointerException.class);
+  }
+
+  @Test
+  public void shouldDetermineLengthOfEmptyMessage() {
+    assertThatThrownBy(() -> snappy.uncompressedLength(new byte[0]))
+        .isInstanceOf(FramingException.class);
+  }
+
+  @Test
+  public void shouldDecompressEmptyMessage() {
+    final byte[] compressed = snappy.compress(new byte[0]);
+    assertThat(snappy.decompress(compressed)).isEmpty();
+  }
+
+  @Test
+  public void shouldRejectMessageWithNonZeroDeclaredLengthButNoCompressedData() {
+    assertThatThrownBy(
+            () -> snappy.decompress(BytesValue.fromHexString("0xFFFFFF01").extractArray()))
+        .isInstanceOf(FramingException.class);
   }
 
   @Test
@@ -74,7 +94,6 @@ public class SnappyCompressorTest {
                 + "d94062719ae58d392b253268da005a4fb2d8d33b19ec84a7312a34ecbfc2a0055c660cc59f5dad52ae"
                 + "4d6fd5f2fc081d706ee0bce4195ecfff07a1f85d1bd6");
 
-    final SnappyCompressor snappy = new SnappyCompressor();
     assertThat(snappy.compress(decompressed)).isEqualTo(compressed);
     assertThat(snappy.decompress(compressed)).isEqualTo(decompressed);
     assertThat(snappy.decompress(snappy.compress(decompressed))).isEqualTo(decompressed);

gradle/versions.gradle

@@ -41,7 +41,7 @@ dependencyManagement {
 
     dependency('io.pkts:pkts-core:3.0.2')
 
-    dependency("org.iq80.snappy:snappy:0.4")
+    dependency('org.xerial.snappy:snappy-java:1.1.7.2')
 
     dependency('com.github.docker-java:docker-java:3.0.14')