Add max inbound message size to ConnectionFactory

To avoid OOM with a very large message.
The default value is 64 MiB.

Fixes #1062

Author: acogoluegnes

src/main/java/com/rabbitmq/client/ConnectionFactory.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -203,6 +203,13 @@ public class ConnectionFactory implements Cloneable {
 
     private CredentialsRefreshService credentialsRefreshService;
 
+    /**
+     * Maximum body size of inbound (received) messages in bytes.
+     *
+     * <p>Default value is 67,108,864 (64 MiB).
+     */
+    private int maxInboundMessageBodySize = 1_048_576 * 64;
+
     /** @return the default host to use for connections */
     public String getHost() {
         return host;
@@ -997,11 +1004,15 @@ protected synchronized FrameHandlerFactory createFrameHandlerFactory() throws IO
                 if(this.nioParams.getNioExecutor() == null && this.nioParams.getThreadFactory() == null) {
                     this.nioParams.setThreadFactory(getThreadFactory());
                 }
-                this.frameHandlerFactory = new SocketChannelFrameHandlerFactory(connectionTimeout, nioParams, isSSL(), sslContextFactory);
+                this.frameHandlerFactory = new SocketChannelFrameHandlerFactory(
+                    connectionTimeout, nioParams, isSSL(), sslContextFactory,
+                    this.maxInboundMessageBodySize);
             }
             return this.frameHandlerFactory;
         } else {
-            return new SocketFrameHandlerFactory(connectionTimeout, socketFactory, socketConf, isSSL(), this.shutdownExecutor, sslContextFactory);
+            return new SocketFrameHandlerFactory(connectionTimeout, socketFactory,
+                socketConf, isSSL(), this.shutdownExecutor, sslContextFactory,
+                this.maxInboundMessageBodySize);
         }
 
     }
@@ -1300,6 +1311,7 @@ public ConnectionParams params(ExecutorService consumerWorkServiceExecutor) {
         result.setRecoveredQueueNameSupplier(recoveredQueueNameSupplier);
         result.setTrafficListener(trafficListener);
         result.setCredentialsRefreshService(credentialsRefreshService);
+        result.setMaxInboundMessageBodySize(maxInboundMessageBodySize);
         return result;
     }
 
@@ -1590,6 +1602,21 @@ public int getChannelRpcTimeout() {
         return channelRpcTimeout;
     }
 
+    /**
+     * Maximum body size of inbound (received) messages in bytes.
+     *
+     * <p>Default value is 67,108,864 (64 MiB).
+     *
+     * @param maxInboundMessageBodySize the maximum size of inbound messages
+     */
+    public void setMaxInboundMessageBodySize(int maxInboundMessageBodySize) {
+        if (maxInboundMessageBodySize <= 0) {
+            throw new IllegalArgumentException("Max inbound message body size must be greater than 0: "
+                + maxInboundMessageBodySize);
+        }
+        this.maxInboundMessageBodySize = maxInboundMessageBodySize;
+    }
+
     /**
      * The factory to create SSL contexts.
      * This provides more flexibility to create {@link SSLContext}s

src/main/java/com/rabbitmq/client/impl/AMQChannel.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -62,7 +62,7 @@ public abstract class AMQChannel extends ShutdownNotifierComponent {
     private final int _channelNumber;
 
     /** Command being assembled */
-    private AMQCommand _command = new AMQCommand();
+    private AMQCommand _command;
 
     /** The current outstanding RPC request, if any. (Could become a queue in future.) */
     private RpcWrapper _activeRpc = null;
@@ -76,6 +76,7 @@ public abstract class AMQChannel extends ShutdownNotifierComponent {
     private final boolean _checkRpcResponseType;
 
     private final TrafficListener _trafficListener;
+    private final int maxInboundMessageBodySize;
 
     /**
      * Construct a channel on the given connection, with the given channel number.
@@ -91,6 +92,8 @@ public AMQChannel(AMQConnection connection, int channelNumber) {
         this._rpcTimeout = connection.getChannelRpcTimeout();
         this._checkRpcResponseType = connection.willCheckRpcResponseType();
         this._trafficListener = connection.getTrafficListener();
+        this.maxInboundMessageBodySize = connection.getMaxInboundMessageBodySize();
+        this._command = new AMQCommand(this.maxInboundMessageBodySize);
     }
 
     /**
@@ -110,7 +113,7 @@ public int getChannelNumber() {
     void handleFrame(Frame frame) throws IOException {
         AMQCommand command = _command;
         if (command.handleFrame(frame)) { // a complete command has rolled off the assembly line
-            _command = new AMQCommand(); // prepare for the next one
+            _command = new AMQCommand(this.maxInboundMessageBodySize); // prepare for the next one
             handleCompleteInboundCommand(command);
         }
     }

src/main/java/com/rabbitmq/client/impl/AMQCommand.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -44,17 +44,21 @@ public class AMQCommand implements Command {
     /** The assembler for this command - synchronised on - contains all the state */
     private final CommandAssembler assembler;
 
+    AMQCommand(int maxBodyLength) {
+        this(null, null, null, maxBodyLength);
+    }
+
     /** Construct a command ready to fill in by reading frames */
     public AMQCommand() {
-        this(null, null, null);
+        this(null, null, null, Integer.MAX_VALUE);
     }
 
     /**
      * Construct a command with just a method, and without header or body.
      * @param method the wrapped method
      */
     public AMQCommand(com.rabbitmq.client.Method method) {
-        this(method, null, null);
+        this(method, null, null, Integer.MAX_VALUE);
     }
 
     /**
@@ -64,7 +68,19 @@ public AMQCommand(com.rabbitmq.client.Method method) {
      * @param body the message body data
      */
     public AMQCommand(com.rabbitmq.client.Method method, AMQContentHeader contentHeader, byte[] body) {
-        this.assembler = new CommandAssembler((Method) method, contentHeader, body);
+        this.assembler = new CommandAssembler((Method) method, contentHeader, body, Integer.MAX_VALUE);
+    }
+
+    /**
+     * Construct a command with a specified method, header and body.
+     * @param method the wrapped method
+     * @param contentHeader the wrapped content header
+     * @param body the message body data
+     * @param maxBodyLength the maximum size for an inbound message body
+     */
+    public AMQCommand(com.rabbitmq.client.Method method, AMQContentHeader contentHeader, byte[] body,
+                      int maxBodyLength) {
+        this.assembler = new CommandAssembler((Method) method, contentHeader, body, maxBodyLength);
     }
 
     /** Public API - {@inheritDoc} */

src/main/java/com/rabbitmq/client/impl/AMQConnection.java

@@ -157,6 +157,7 @@ public static Map<String, Object> defaultClientProperties() {
     private volatile ChannelManager _channelManager;
     /** Saved server properties field from connection.start */
     private volatile Map<String, Object> _serverProperties;
+    private final int maxInboundMessageBodySize;
 
     /**
      * Protected API - respond, in the main I/O loop thread, to a ShutdownSignal.
@@ -244,6 +245,7 @@ public AMQConnection(ConnectionParams params, FrameHandler frameHandler, Metrics
 
         this.credentialsRefreshService = params.getCredentialsRefreshService();
 
+
         this._channel0 = createChannel0();
 
         this._channelManager = null;
@@ -257,6 +259,7 @@ public AMQConnection(ConnectionParams params, FrameHandler frameHandler, Metrics
         this.errorOnWriteListener = params.getErrorOnWriteListener() != null ? params.getErrorOnWriteListener() :
             (connection, exception) -> { throw exception; }; // we just propagate the exception for non-recoverable connections
         this.workPoolTimeout = params.getWorkPoolTimeout();
+        this.maxInboundMessageBodySize = params.getMaxInboundMessageBodySize();
     }
 
     AMQChannel createChannel0() {
@@ -1191,4 +1194,8 @@ public boolean willCheckRpcResponseType() {
     public TrafficListener getTrafficListener() {
         return trafficListener;
     }
+
+    int getMaxInboundMessageBodySize() {
+        return maxInboundMessageBodySize;
+    }
 }

src/main/java/com/rabbitmq/client/impl/AbstractFrameHandlerFactory.java

@@ -1,3 +1,18 @@
+// Copyright (c) 2016-2023 VMware, Inc. or its affiliates.  All rights reserved.
+//
+// This software, the RabbitMQ Java client library, is triple-licensed under the
+// Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
+// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
+// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2.  For the ASL,
+// please see LICENSE-APACHE2.
+//
+// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
+// either express or implied. See the LICENSE file for specific language governing
+// rights and limitations of this software.
+//
+// If you have any questions regarding licensing, please contact us at
+// [email protected].
+
 package com.rabbitmq.client.impl;
 
 import com.rabbitmq.client.SocketConfigurator;
@@ -10,10 +25,13 @@ public abstract class AbstractFrameHandlerFactory implements FrameHandlerFactory
     protected final int connectionTimeout;
     protected final SocketConfigurator configurator;
     protected final boolean ssl;
+    protected final int maxInboundMessageBodySize;
 
-    protected AbstractFrameHandlerFactory(int connectionTimeout, SocketConfigurator configurator, boolean ssl) {
+    protected AbstractFrameHandlerFactory(int connectionTimeout, SocketConfigurator configurator,
+                                          boolean ssl, int maxInboundMessageBodySize) {
         this.connectionTimeout = connectionTimeout;
         this.configurator = configurator;
         this.ssl = ssl;
+        this.maxInboundMessageBodySize = maxInboundMessageBodySize;
     }
 }

src/main/java/com/rabbitmq/client/impl/CommandAssembler.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -21,6 +21,7 @@
 
 import com.rabbitmq.client.AMQP;
 import com.rabbitmq.client.UnexpectedFrameError;
+import static java.lang.String.format;
 
 /**
  * Class responsible for piecing together a command from a series of {@link Frame}s.
@@ -52,12 +53,16 @@ private enum CAState {
     /** No bytes of content body not yet accumulated */
     private long remainingBodyBytes;
 
-    public CommandAssembler(Method method, AMQContentHeader contentHeader, byte[] body) {
+    private final int maxBodyLength;
+
+    public CommandAssembler(Method method, AMQContentHeader contentHeader, byte[] body,
+                            int maxBodyLength) {
         this.method = method;
         this.contentHeader = contentHeader;
-        this.bodyN = new ArrayList<byte[]>(2);
+        this.bodyN = new ArrayList<>(2);
         this.bodyLength = 0;
         this.remainingBodyBytes = 0;
+        this.maxBodyLength = maxBodyLength;
         appendBodyFragment(body);
         if (method == null) {
             this.state = CAState.EXPECTING_METHOD;
@@ -99,7 +104,14 @@ private void consumeMethodFrame(Frame f) throws IOException {
     private void consumeHeaderFrame(Frame f) throws IOException {
         if (f.getType() == AMQP.FRAME_HEADER) {
             this.contentHeader = AMQImpl.readContentHeaderFrom(f.getInputStream());
-            this.remainingBodyBytes = this.contentHeader.getBodySize();
+            long bodySize = this.contentHeader.getBodySize();
+            if (bodySize >= this.maxBodyLength) {
+                throw new IllegalStateException(format(
+                    "Message body is too large (%d), maximum size is %d",
+                    bodySize, this.maxBodyLength
+                ));
+            }
+            this.remainingBodyBytes = bodySize;
             updateContentBodyState();
         } else {
             throw new UnexpectedFrameError(f, AMQP.FRAME_HEADER);

src/main/java/com/rabbitmq/client/impl/ConnectionParams.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -63,6 +63,8 @@ public class ConnectionParams {
 
     private CredentialsRefreshService credentialsRefreshService;
 
+    private int maxInboundMessageBodySize;
+
     public ConnectionParams() {}
 
     public CredentialsProvider getCredentialsProvider() {
@@ -296,4 +298,12 @@ public void setCredentialsRefreshService(CredentialsRefreshService credentialsRe
     public CredentialsRefreshService getCredentialsRefreshService() {
         return credentialsRefreshService;
     }
+
+    public int getMaxInboundMessageBodySize() {
+        return maxInboundMessageBodySize;
+    }
+
+    public void setMaxInboundMessageBodySize(int maxInboundMessageBodySize) {
+        this.maxInboundMessageBodySize = maxInboundMessageBodySize;
+    }
 }

src/main/java/com/rabbitmq/client/impl/Frame.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2022 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -25,6 +25,7 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
+import static java.lang.String.format;
 
 /**
  * Represents an AMQP wire-protocol frame, with frame type, channel number, and payload bytes.
@@ -81,7 +82,7 @@ public static Frame fromBodyFragment(int channelNumber, byte[] body, int offset,
      *
      * @return a new Frame if we read a frame successfully, otherwise null
      */
-    public static Frame readFrom(DataInputStream is) throws IOException {
+    public static Frame readFrom(DataInputStream is, int maxPayloadSize) throws IOException {
         int type;
         int channel;
 
@@ -107,6 +108,12 @@ public static Frame readFrom(DataInputStream is) throws IOException {
 
         channel = is.readUnsignedShort();
         int payloadSize = is.readInt();
+        if (payloadSize >= maxPayloadSize) {
+            throw new IllegalStateException(format(
+                "Frame body is too large (%d), maximum size is %d",
+                payloadSize, maxPayloadSize
+            ));
+        }
         byte[] payload = new byte[payloadSize];
         is.readFully(payload);
 

src/main/java/com/rabbitmq/client/impl/SocketFrameHandler.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+// Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.
 //
 // This software, the RabbitMQ Java client library, is triple-licensed under the
 // Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
@@ -52,22 +52,26 @@ public class SocketFrameHandler implements FrameHandler {
     /** Socket's outputstream - data to the broker - synchronized on */
     private final DataOutputStream _outputStream;
 
+    private final int maxInboundMessageBodySize;
+
     /** Time to linger before closing the socket forcefully. */
     public static final int SOCKET_CLOSING_TIMEOUT = 1;
 
     /**
      * @param socket the socket to use
      */
     public SocketFrameHandler(Socket socket) throws IOException {
-        this(socket, null);
+        this(socket, null, Integer.MAX_VALUE);
     }
 
     /**
      * @param socket the socket to use
      */
-    public SocketFrameHandler(Socket socket, ExecutorService shutdownExecutor) throws IOException {
+    public SocketFrameHandler(Socket socket, ExecutorService shutdownExecutor,
+                              int maxInboundMessageBodySize) throws IOException {
         _socket = socket;
         _shutdownExecutor = shutdownExecutor;
+        this.maxInboundMessageBodySize = maxInboundMessageBodySize;
 
         _inputStream = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
         _outputStream = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
@@ -181,7 +185,7 @@ public void initialize(AMQConnection connection) {
     @Override
     public Frame readFrame() throws IOException {
         synchronized (_inputStream) {
-            return Frame.readFrom(_inputStream);
+            return Frame.readFrom(_inputStream, this.maxInboundMessageBodySize);
         }
     }