| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.coyote.http11.filters; |
| |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| |
| import org.apache.coyote.InputBuffer; |
| import org.apache.coyote.Request; |
| import org.apache.coyote.http11.InputFilter; |
| import org.apache.tomcat.util.buf.ByteChunk; |
| |
| /** |
| * Input filter responsible for reading and buffering the request body, so that |
| * it does not interfere with client SSL handshake messages. |
| */ |
| public class BufferedInputFilter implements InputFilter { |
| |
| // -------------------------------------------------------------- Constants |
| |
| private static final String ENCODING_NAME = "buffered"; |
| private static final ByteChunk ENCODING = new ByteChunk(); |
| |
| |
| // ----------------------------------------------------- Instance Variables |
| |
| private ByteChunk buffered = null; |
| private final ByteChunk tempRead = new ByteChunk(1024); |
| private InputBuffer buffer; |
| private boolean hasRead = false; |
| |
| |
| // ----------------------------------------------------- Static Initializer |
| |
| static { |
| ENCODING.setBytes(ENCODING_NAME.getBytes(StandardCharsets.ISO_8859_1), |
| 0, ENCODING_NAME.length()); |
| } |
| |
| |
| // --------------------------------------------------------- Public Methods |
| |
| |
| /** |
| * Set the buffering limit. This should be reset every time the buffer is |
| * used. |
| * |
| * @param limit The maximum number of bytes that will be buffered |
| */ |
| public void setLimit(int limit) { |
| if (buffered == null) { |
| buffered = new ByteChunk(4048); |
| buffered.setLimit(limit); |
| } |
| } |
| |
| |
| // ---------------------------------------------------- InputBuffer Methods |
| |
| |
| /** |
| * Reads the request body and buffers it. |
| */ |
| @Override |
| public void setRequest(Request request) { |
| // save off the Request body |
| try { |
| while (buffer.doRead(tempRead, request) >= 0) { |
| buffered.append(tempRead); |
| tempRead.recycle(); |
| } |
| } catch(IOException ioe) { |
| // No need for i18n - this isn't going to get logged anywhere |
| throw new IllegalStateException( |
| "Request body too large for buffer"); |
| } |
| } |
| |
| /** |
| * Fills the given ByteChunk with the buffered request body. |
| */ |
| @Override |
| public int doRead(ByteChunk chunk, Request request) throws IOException { |
| if (hasRead || buffered.getLength() <= 0) { |
| return -1; |
| } |
| |
| chunk.setBytes(buffered.getBytes(), buffered.getStart(), |
| buffered.getLength()); |
| hasRead = true; |
| return chunk.getLength(); |
| } |
| |
| @Override |
| public void setBuffer(InputBuffer buffer) { |
| this.buffer = buffer; |
| } |
| |
| @Override |
| public void recycle() { |
| if (buffered != null) { |
| if (buffered.getBuffer().length > 65536) { |
| buffered = null; |
| } else { |
| buffered.recycle(); |
| } |
| } |
| tempRead.recycle(); |
| hasRead = false; |
| buffer = null; |
| } |
| |
| @Override |
| public ByteChunk getEncodingName() { |
| return ENCODING; |
| } |
| |
| @Override |
| public long end() throws IOException { |
| return 0; |
| } |
| |
| @Override |
| public int available() { |
| return buffered.getLength(); |
| } |
| |
| |
| @Override |
| public boolean isFinished() { |
| return hasRead || buffered.getLength() <= 0; |
| } |
| } |