org.glassfish.grizzly.http.server.io.ServerInputBuffer Maven / Gradle / Ivy

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package org.glassfish.grizzly.http.server.io;

import java.io.IOException;
import java.util.concurrent.Executor;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.filterchain.FilterChainContext;
import org.glassfish.grizzly.http.HttpBrokenContent;
import org.glassfish.grizzly.http.HttpContent;
import org.glassfish.grizzly.http.io.InputBuffer;
import org.glassfish.grizzly.http.server.Request;

/**
 * Server-side implementation of the {@link InputBuffer}.
 * 
 * @author Alexey Stashok
 */
public class ServerInputBuffer extends InputBuffer {
    private volatile long totalReadContentInBytes;
    private volatile Request serverRequest;
    
    public void initialize(final Request serverRequest,
            final FilterChainContext ctx) {
        this.serverRequest = serverRequest;
        super.initialize(serverRequest.getRequest(), ctx);
    }
    
    /**
     * Initiates asynchronous data receiving.
     *
     * This is service method, usually users don't have to call it explicitly.
     */
    @Override
    public void initiateAsyncronousDataReceiving() {
        if (!checkChunkedMaxPostSize()) {
            final HttpContent brokenContent =
                    HttpBrokenContent.builder(serverRequest.getRequest())
                    .error(new IOException("The HTTP request content exceeds max post size"))
                    .build();
            try {
                append(brokenContent);
            } catch (IOException ignored) {
            }
            
            return;
        }
        
        super.initiateAsyncronousDataReceiving();
    }

    @Override
    protected HttpContent blockingRead() throws IOException {
        if (!checkChunkedMaxPostSize()) {
            throw new IOException("The HTTP request content exceeds max post size");
        }
        
        return super.blockingRead();
    }

    @Override
    protected void updateInputContentBuffer(final Buffer buffer) {
        totalReadContentInBytes += buffer.remaining();
        super.updateInputContentBuffer(buffer);
    }
    
    
    @Override
    public void recycle() {
        serverRequest = null;
        totalReadContentInBytes = 0;
        super.recycle();
    }

    @Override
    protected Executor getThreadPool() {
        return serverRequest.getRequestExecutor();
    }

    private boolean checkChunkedMaxPostSize() {
        if (serverRequest.getRequest().isChunked()) {
            final long maxPostSize = serverRequest.getHttpFilter().getConfiguration().getMaxPostSize();
            return maxPostSize < 0 || maxPostSize > totalReadContentInBytes;
        }
        
        return true;
    }
}