| /* |
| * 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; |
| |
| import java.io.EOFException; |
| import java.io.IOException; |
| |
| import org.apache.coyote.InputBuffer; |
| import org.apache.coyote.Request; |
| import org.apache.tomcat.util.buf.ByteChunk; |
| import org.apache.tomcat.util.buf.MessageBytes; |
| |
| /** |
| * Implementation of InputBuffer which provides HTTP request header parsing as |
| * well as transfer decoding. |
| * |
| * @author <a href="mailto:remm@apache.org">Remy Maucherat</a> |
| */ |
| public class InternalInputBuffer extends AbstractInputBuffer { |
| |
| /** |
| * Default constructor. |
| */ |
| public InternalInputBuffer(Request request, int headerBufferSize) { |
| |
| this.request = request; |
| headers = request.getMimeHeaders(); |
| |
| buf = new byte[headerBufferSize]; |
| |
| inputStreamInputBuffer = new InputStreamInputBuffer(); |
| |
| filterLibrary = new InputFilter[0]; |
| activeFilters = new InputFilter[0]; |
| lastActiveFilter = -1; |
| |
| parsingHeader = true; |
| swallowInput = true; |
| |
| } |
| |
| /** |
| * Read the request line. This function is meant to be used during the |
| * HTTP request header parsing. Do NOT attempt to read the request body |
| * using it. |
| * |
| * @throws IOException If an exception occurs during the underlying socket |
| * read operations, or if the given buffer is not big enough to accommodate |
| * the whole line. |
| */ |
| @Override |
| public boolean parseRequestLine(boolean useAvailableDataOnly) |
| |
| throws IOException { |
| |
| int start = 0; |
| |
| // |
| // Skipping blank lines |
| // |
| |
| byte chr = 0; |
| do { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| chr = buf[pos++]; |
| |
| } while ((chr == Constants.CR) || (chr == Constants.LF)); |
| |
| pos--; |
| |
| // Mark the current buffer position |
| start = pos; |
| |
| // |
| // Reading the method name |
| // Method name is always US-ASCII |
| // |
| |
| boolean space = false; |
| |
| while (!space) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| // Spec says no CR or LF in method name |
| if (buf[pos] == Constants.CR || buf[pos] == Constants.LF) { |
| throw new IllegalArgumentException( |
| sm.getString("iib.invalidmethod")); |
| } |
| // Spec says single SP but it also says be tolerant of HT |
| if (buf[pos] == Constants.SP || buf[pos] == Constants.HT) { |
| space = true; |
| request.method().setBytes(buf, start, pos - start); |
| } |
| |
| pos++; |
| |
| } |
| |
| |
| // Spec says single SP but also says be tolerant of multiple and/or HT |
| while (space) { |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| if (buf[pos] == Constants.SP || buf[pos] == Constants.HT) { |
| pos++; |
| } else { |
| space = false; |
| } |
| } |
| |
| // Mark the current buffer position |
| start = pos; |
| int end = 0; |
| int questionPos = -1; |
| |
| // |
| // Reading the URI |
| // |
| |
| boolean eol = false; |
| |
| while (!space) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| // Spec says single SP but it also says be tolerant of HT |
| if (buf[pos] == Constants.SP || buf[pos] == Constants.HT) { |
| space = true; |
| end = pos; |
| } else if ((buf[pos] == Constants.CR) |
| || (buf[pos] == Constants.LF)) { |
| // HTTP/0.9 style request |
| eol = true; |
| space = true; |
| end = pos; |
| } else if ((buf[pos] == Constants.QUESTION) |
| && (questionPos == -1)) { |
| questionPos = pos; |
| } |
| |
| pos++; |
| |
| } |
| |
| request.unparsedURI().setBytes(buf, start, end - start); |
| if (questionPos >= 0) { |
| request.queryString().setBytes(buf, questionPos + 1, |
| end - questionPos - 1); |
| request.requestURI().setBytes(buf, start, questionPos - start); |
| } else { |
| request.requestURI().setBytes(buf, start, end - start); |
| } |
| |
| // Spec says single SP but also says be tolerant of multiple and/or HT |
| while (space) { |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| if (buf[pos] == Constants.SP || buf[pos] == Constants.HT) { |
| pos++; |
| } else { |
| space = false; |
| } |
| } |
| |
| // Mark the current buffer position |
| start = pos; |
| end = 0; |
| |
| // |
| // Reading the protocol |
| // Protocol is always US-ASCII |
| // |
| |
| while (!eol) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| if (buf[pos] == Constants.CR) { |
| end = pos; |
| } else if (buf[pos] == Constants.LF) { |
| if (end == 0) |
| end = pos; |
| eol = true; |
| } |
| |
| pos++; |
| |
| } |
| |
| if ((end - start) > 0) { |
| request.protocol().setBytes(buf, start, end - start); |
| } else { |
| request.protocol().setString(""); |
| } |
| |
| return true; |
| |
| } |
| |
| |
| /** |
| * Parse the HTTP headers. |
| */ |
| @Override |
| public boolean parseHeaders() |
| throws IOException { |
| |
| while (parseHeader()) { |
| // Loop until we run out of headers |
| } |
| |
| parsingHeader = false; |
| end = pos; |
| return true; |
| } |
| |
| |
| /** |
| * Parse an HTTP header. |
| * |
| * @return false after reading a blank line (which indicates that the |
| * HTTP header parsing is done |
| */ |
| @SuppressWarnings("null") // headerValue cannot be null |
| public boolean parseHeader() |
| throws IOException { |
| |
| // |
| // Check for blank line |
| // |
| |
| byte chr = 0; |
| while (true) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| chr = buf[pos]; |
| |
| if ((chr == Constants.CR) || (chr == Constants.LF)) { |
| if (chr == Constants.LF) { |
| pos++; |
| return false; |
| } |
| } else { |
| break; |
| } |
| |
| pos++; |
| |
| } |
| |
| // Mark the current buffer position |
| int start = pos; |
| |
| // |
| // Reading the header name |
| // Header name is always US-ASCII |
| // |
| |
| boolean colon = false; |
| MessageBytes headerValue = null; |
| |
| while (!colon) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| if (buf[pos] == Constants.COLON) { |
| colon = true; |
| headerValue = headers.addValue(buf, start, pos - start); |
| } |
| chr = buf[pos]; |
| if ((chr >= Constants.A) && (chr <= Constants.Z)) { |
| buf[pos] = (byte) (chr - Constants.LC_OFFSET); |
| } |
| |
| pos++; |
| |
| } |
| |
| // Mark the current buffer position |
| start = pos; |
| int realPos = pos; |
| |
| // |
| // Reading the header value (which can be spanned over multiple lines) |
| // |
| |
| boolean eol = false; |
| boolean validLine = true; |
| |
| while (validLine) { |
| |
| boolean space = true; |
| |
| // Skipping spaces |
| while (space) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| if ((buf[pos] == Constants.SP) || (buf[pos] == Constants.HT)) { |
| pos++; |
| } else { |
| space = false; |
| } |
| |
| } |
| |
| int lastSignificantChar = realPos; |
| |
| // Reading bytes until the end of the line |
| while (!eol) { |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| if (buf[pos] == Constants.CR) { |
| // Skip |
| } else if (buf[pos] == Constants.LF) { |
| eol = true; |
| } else if (buf[pos] == Constants.SP) { |
| buf[realPos] = buf[pos]; |
| realPos++; |
| } else { |
| buf[realPos] = buf[pos]; |
| realPos++; |
| lastSignificantChar = realPos; |
| } |
| |
| pos++; |
| |
| } |
| |
| realPos = lastSignificantChar; |
| |
| // Checking the first character of the new line. If the character |
| // is a LWS, then it's a multiline header |
| |
| // Read new bytes if needed |
| if (pos >= lastValid) { |
| if (!fill()) |
| throw new EOFException(sm.getString("iib.eof.error")); |
| } |
| |
| chr = buf[pos]; |
| if ((chr != Constants.SP) && (chr != Constants.HT)) { |
| validLine = false; |
| } else { |
| eol = false; |
| // Copying one extra space in the buffer (since there must |
| // be at least one space inserted between the lines) |
| buf[realPos] = chr; |
| realPos++; |
| } |
| |
| } |
| |
| // Set the header value |
| headerValue.setBytes(buf, start, realPos - start); |
| |
| return true; |
| |
| } |
| |
| |
| // ------------------------------------------------------ Protected Methods |
| |
| |
| /** |
| * Fill the internal buffer using data from the underlying input stream. |
| * |
| * @return false if at end of stream |
| */ |
| protected boolean fill() throws IOException { |
| return fill(true); |
| } |
| |
| @Override |
| protected boolean fill(boolean block) throws IOException { |
| |
| int nRead = 0; |
| |
| if (parsingHeader) { |
| |
| if (lastValid == buf.length) { |
| throw new IllegalArgumentException |
| (sm.getString("iib.requestheadertoolarge.error")); |
| } |
| |
| nRead = inputStream.read(buf, pos, buf.length - lastValid); |
| if (nRead > 0) { |
| lastValid = pos + nRead; |
| } |
| |
| } else { |
| |
| if (buf.length - end < 4500) { |
| // In this case, the request header was really large, so we allocate a |
| // brand new one; the old one will get GCed when subsequent requests |
| // clear all references |
| buf = new byte[buf.length]; |
| end = 0; |
| } |
| pos = end; |
| lastValid = pos; |
| nRead = inputStream.read(buf, pos, buf.length - lastValid); |
| if (nRead > 0) { |
| lastValid = pos + nRead; |
| } |
| |
| } |
| |
| return (nRead > 0); |
| |
| } |
| |
| |
| // ------------------------------------- InputStreamInputBuffer Inner Class |
| |
| |
| /** |
| * This class is an input buffer which will read its data from an input |
| * stream. |
| */ |
| protected class InputStreamInputBuffer |
| implements InputBuffer { |
| |
| |
| /** |
| * Read bytes into the specified chunk. |
| */ |
| @Override |
| public int doRead(ByteChunk chunk, Request req ) |
| throws IOException { |
| |
| if (pos >= lastValid) { |
| if (!fill()) |
| return -1; |
| } |
| |
| int length = lastValid - pos; |
| chunk.setBytes(buf, pos, length); |
| pos = lastValid; |
| |
| return (length); |
| |
| } |
| |
| |
| } |
| |
| |
| } |