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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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*
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package org.glassfish.grizzly.spdy;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.http.HttpRequestPacket;
import org.glassfish.grizzly.http.HttpResponsePacket;
import org.glassfish.grizzly.http.util.Ascii;
import org.glassfish.grizzly.http.util.BufferChunk;
import org.glassfish.grizzly.http.util.ByteChunk;
import org.glassfish.grizzly.http.util.DataChunk;
import org.glassfish.grizzly.http.util.Header;
import org.glassfish.grizzly.http.util.HttpStatus;
import org.glassfish.grizzly.http.util.MimeHeaders;
import org.glassfish.grizzly.memory.MemoryManager;
import org.glassfish.grizzly.spdy.compression.SpdyDeflaterOutputStream;
import org.glassfish.grizzly.utils.BufferOutputStream;
import org.glassfish.grizzly.utils.Exceptions;
import static org.glassfish.grizzly.http.util.Constants.*;
import static org.glassfish.grizzly.http.util.DataChunk.Type.Buffer;
import static org.glassfish.grizzly.http.util.DataChunk.Type.Bytes;
import static org.glassfish.grizzly.http.util.HttpCodecUtils.*;
/**
* HTTP Packet -> SpdyFrames encoder utils.
*
* @author Grizzly team
*/
class SpdyEncoderUtils {
private static final byte[] SPACE_BYTES = {' '};
private static final byte[] HTTPS_BYTES = "https".getBytes(DEFAULT_HTTP_CHARSET);
@SuppressWarnings("unchecked")
static Buffer encodeSynReplyHeadersAndLock(final SpdySession spdySession,
final HttpResponsePacket response) throws IOException {
final MemoryManager mm = spdySession.getMemoryManager();
final Buffer compressedBuffer = mm.allocate(2048);
final Buffer plainBuffer = mm.allocate(2048);
final MimeHeaders headers = response.getHeaders();
headers.removeHeader(Header.Connection);
headers.removeHeader(Header.KeepAlive);
headers.removeHeader(Header.ProxyConnection);
headers.removeHeader(Header.TransferEncoding);
// Serialize user headers first, so we know their count
final BufferOutputStream userHeadersBOS = new BufferOutputStream(mm);
final DataOutputStream userHeadersDOS = new DataOutputStream(userHeadersBOS);
userHeadersBOS.setInitialOutputBuffer(plainBuffer);
final int userHeadersNum = encodeUserHeaders(spdySession, headers, userHeadersDOS);
userHeadersDOS.flush();
final Buffer userHeadersBuffer = userHeadersBOS.getBuffer();
userHeadersBOS.reset();
// get the plain user headers buffer
userHeadersBuffer.trim();
// !!!! LOCK the deflater
spdySession.getDeflaterLock().lock();
try {
final DataOutputStream dataOutputStream =
spdySession.getDeflaterDataOutputStream();
final SpdyDeflaterOutputStream deflaterOutputStream =
spdySession.getDeflaterOutputStream();
deflaterOutputStream.setInitialOutputBuffer(compressedBuffer);
dataOutputStream.writeInt(userHeadersNum + 2);
if (response.isCustomReasonPhraseSet()) {
// don't apply HttpStatus.filter(DataChunk)
encodeHeaderValue(dataOutputStream, Constants.STATUS_HEADER_BYTES,
response.getHttpStatus().getStatusBytes(), SPACE_BYTES,
response.getReasonPhraseDC().toString().getBytes(DEFAULT_HTTP_CHARACTER_ENCODING));
} else {
encodeHeaderValue(dataOutputStream, Constants.STATUS_HEADER_BYTES,
response.getHttpStatus().getStatusBytes(), SPACE_BYTES,
response.getHttpStatus().getReasonPhraseBytes());
}
encodeHeaderValue(dataOutputStream, Constants.VERSION_HEADER_BYTES,
response.getProtocol().getProtocolBytes());
dataOutputStream.flush();
deflaterOutputStream.write(userHeadersBuffer);
return deflaterOutputStream.checkpoint();
} catch (Exception e) {
spdySession.getDeflaterLock().unlock();
throw Exceptions.makeIOException(e);
} finally {
userHeadersBuffer.dispose();
}
}
@SuppressWarnings("unchecked")
static Buffer encodeSynStreamHeadersAndLock(final SpdyStream spdyStream,
final HttpRequestPacket request) throws IOException {
// ----------------- Parse URI scheme and path ----------------
int schemeStart = -1;
int schemeLen = -1;
final byte[] requestURI =
request.getRequestURI().getBytes(DEFAULT_HTTP_CHARACTER_ENCODING);
final int len = requestURI.length;
final int nonSpaceIdx = skipSpaces(requestURI, 0, len, len);
final int idx = ByteChunk.indexOf(requestURI, nonSpaceIdx, len, '/');
if (idx > 0 && idx < len - 1 &&
requestURI[idx - 1] == ':' && requestURI[idx + 1] == '/') {
schemeStart = nonSpaceIdx;
schemeLen = idx - schemeStart - 1;
}
final int pathStart = schemeStart == -1 ?
idx :
ByteChunk.indexOf(requestURI, idx + 2, len, '/');
final int pathLen = len - pathStart;
if (pathStart == -1) {
throw new IllegalStateException("Request URI path is not set");
}
// ---------------------------------------------------------------
final MimeHeaders headers = request.getHeaders();
final String hostHeader = headers.getHeader(Header.Host);
final byte[] hostHeaderBytes;
final int hostHeaderStart;
final int hostHeaderLen;
if (hostHeader == null) {
if (schemeStart == -1) {
throw new IllegalStateException("Missing the Host header");
}
hostHeaderBytes = requestURI;
hostHeaderStart = schemeStart + schemeLen + 3;
hostHeaderLen = pathStart - hostHeaderStart;
} else {
hostHeaderBytes =
hostHeader.getBytes(DEFAULT_HTTP_CHARACTER_ENCODING);
hostHeaderStart = 0;
hostHeaderLen = hostHeaderBytes.length;
}
final SpdySession spdySession = spdyStream.getSpdySession();
final MemoryManager mm = spdySession.getMemoryManager();
final Buffer compressedBuffer = mm.allocate(2048);
final Buffer plainBuffer = mm.allocate(2048);
headers.removeHeader(Header.Connection);
headers.removeHeader(Header.Host);
headers.removeHeader(Header.KeepAlive);
headers.removeHeader(Header.ProxyConnection);
headers.removeHeader(Header.TransferEncoding);
// Serialize user headers first, so we know their count
final BufferOutputStream userHeadersBOS = new BufferOutputStream(mm);
final DataOutputStream userHeadersDOS = new DataOutputStream(userHeadersBOS);
userHeadersBOS.setInitialOutputBuffer(plainBuffer);
final int userHeadersNum = encodeUserHeaders(spdySession, headers, userHeadersDOS);
userHeadersDOS.flush();
final Buffer userHeadersBuffer = userHeadersBOS.getBuffer();
userHeadersBOS.reset();
// get the plain user headers buffer
userHeadersBuffer.trim();
// !!!! LOCK the deflater
spdySession.getDeflaterLock().lock();
try {
final DataOutputStream dataOutputStream =
spdySession.getDeflaterDataOutputStream();
final SpdyDeflaterOutputStream deflaterOutputStream =
spdySession.getDeflaterOutputStream();
deflaterOutputStream.setInitialOutputBuffer(compressedBuffer);
dataOutputStream.writeInt(userHeadersNum + 5);
encodeHeaderValue(dataOutputStream, Constants.METHOD_HEADER_BYTES,
request.getMethod().getMethodBytes());
encodeHeaderValue(dataOutputStream, Constants.PATH_HEADER_BYTES,
requestURI, pathStart, pathLen);
encodeHeaderValue(dataOutputStream, Constants.VERSION_HEADER_BYTES,
request.getProtocol().getProtocolBytes());
encodeHeaderValue(dataOutputStream, Constants.HOST_HEADER_BYTES,
hostHeaderBytes, hostHeaderStart, hostHeaderLen);
if (schemeLen > 0) {
encodeHeaderValue(dataOutputStream, Constants.SCHEMA_HEADER_BYTES,
requestURI, schemeStart, schemeLen);
} else {
encodeHeaderValue(dataOutputStream, Constants.SCHEMA_HEADER_BYTES,
HTTPS_BYTES);
}
dataOutputStream.flush();
deflaterOutputStream.write(userHeadersBuffer);
return deflaterOutputStream.checkpoint();
} catch (Exception e) {
spdySession.getDeflaterLock().unlock();
throw Exceptions.makeIOException(e);
} finally {
userHeadersBuffer.dispose();
}
}
@SuppressWarnings("unchecked")
static Buffer encodeUnidirectionalSynStreamHeadersAndLock(final SpdyStream spdyStream,
final SpdyResponse response) throws IOException {
// ----------------- Parse URI scheme and path ----------------
int schemeStart = -1;
int schemeLen = -1;
final byte[] requestURI = response.getRequest().getRequestURI()
.getBytes(DEFAULT_HTTP_CHARACTER_ENCODING);
final int len = requestURI.length;
final int nonSpaceIdx = skipSpaces(requestURI, 0, len, len);
final int idx = ByteChunk.indexOf(requestURI, nonSpaceIdx, len, '/');
if (idx > 0 && idx < len - 1 &&
requestURI[idx - 1] == ':' && requestURI[idx + 1] == '/') {
schemeStart = nonSpaceIdx;
schemeLen = idx - schemeStart - 1;
}
final int pathStart = schemeStart == -1 ?
idx :
ByteChunk.indexOf(requestURI, idx + 2, len, '/');
final int pathLen = len - pathStart;
if (pathStart == -1) {
throw new IllegalStateException("Request URI path is not set");
}
// ---------------------------------------------------------------
final MimeHeaders headers = response.getHeaders();
final String hostHeader = headers.getHeader(Header.Host);
final byte[] hostHeaderBytes;
final int hostHeaderStart;
final int hostHeaderLen;
if (hostHeader == null) {
if (schemeStart == -1) {
throw new IllegalStateException("Missing the Host header");
}
hostHeaderBytes = requestURI;
hostHeaderStart = schemeStart + schemeLen + 3;
hostHeaderLen = pathStart - hostHeaderStart;
} else {
hostHeaderBytes =
hostHeader.getBytes(DEFAULT_HTTP_CHARACTER_ENCODING);
hostHeaderStart = 0;
hostHeaderLen = hostHeaderBytes.length;
}
final SpdySession spdySession = spdyStream.getSpdySession();
final MemoryManager mm = spdySession.getMemoryManager();
final Buffer compressedBuffer = mm.allocate(2048);
final Buffer plainBuffer = mm.allocate(2048);
headers.removeHeader(Header.Connection);
headers.removeHeader(Header.Host);
headers.removeHeader(Header.KeepAlive);
headers.removeHeader(Header.ProxyConnection);
headers.removeHeader(Header.TransferEncoding);
// Serialize user headers first, so we know their count
final BufferOutputStream userHeadersBOS = new BufferOutputStream(mm);
final DataOutputStream userHeadersDOS = new DataOutputStream(userHeadersBOS);
userHeadersBOS.setInitialOutputBuffer(plainBuffer);
final int userHeadersNum = encodeUserHeaders(spdySession, headers, userHeadersDOS);
userHeadersDOS.flush();
final Buffer userHeadersBuffer = userHeadersBOS.getBuffer();
userHeadersBOS.reset();
// get the plain user headers buffer
userHeadersBuffer.trim();
// !!!! LOCK the deflater
spdySession.getDeflaterLock().lock();
try {
final DataOutputStream dataOutputStream =
spdySession.getDeflaterDataOutputStream();
final SpdyDeflaterOutputStream deflaterOutputStream =
spdySession.getDeflaterOutputStream();
deflaterOutputStream.setInitialOutputBuffer(compressedBuffer);
dataOutputStream.writeInt(userHeadersNum + 5);
if (schemeLen > 0) {
encodeHeaderValue(dataOutputStream, Constants.SCHEMA_HEADER_BYTES,
requestURI, schemeStart, schemeLen);
} else {
encodeHeaderValue(dataOutputStream, Constants.SCHEMA_HEADER_BYTES,
HTTPS_BYTES);
}
encodeHeaderValue(dataOutputStream, Constants.HOST_HEADER_BYTES,
hostHeaderBytes, hostHeaderStart, hostHeaderLen);
encodeHeaderValue(dataOutputStream, Constants.PATH_HEADER_BYTES,
requestURI, pathStart, pathLen);
encodeHeaderValue(dataOutputStream, Constants.VERSION_HEADER_BYTES,
response.getProtocol().getProtocolBytes());
final HttpStatus httpStatus = response.getHttpStatus();
if (response.isCustomReasonPhraseSet()) {
encodeHeaderValue(dataOutputStream, Constants.STATUS_HEADER_BYTES,
httpStatus.getStatusBytes(), SPACE_BYTES,
response.getReasonPhraseRawDC()
.toString().getBytes(DEFAULT_HTTP_CHARACTER_ENCODING));
} else {
encodeHeaderValue(dataOutputStream, Constants.STATUS_HEADER_BYTES,
httpStatus.getStatusBytes(), SPACE_BYTES,
httpStatus.getReasonPhraseBytes());
}
dataOutputStream.flush();
deflaterOutputStream.write(userHeadersBuffer);
return deflaterOutputStream.checkpoint();
} catch (Exception e) {
spdySession.getDeflaterLock().unlock();
throw Exceptions.makeIOException(e);
} finally {
userHeadersBuffer.dispose();
}
}
@SuppressWarnings("unchecked")
private static int encodeUserHeaders(final SpdySession spdySession,
final MimeHeaders headers,
final DataOutputStream dataOutputStream) throws IOException {
final int mimeHeadersCount = headers.size();
List tmpList = null;
int headersNum = 0;
for (int i = 0; i < mimeHeadersCount; i++) {
int valueSize = 0;
if (!headers.setSerialized(i, true)) {
final DataChunk name = headers.getName(i);
if (name.isNull() || name.getLength() == 0) {
continue;
}
final DataChunk value1 = headers.getValue(i);
for (int j = i; j < mimeHeadersCount; j++) {
if (!headers.isSerialized(j) &&
name.equalsIgnoreCase(headers.getName(j))) {
headers.setSerialized(j, true);
final DataChunk value = headers.getValue(j);
if (!value.isNull()) {
if (tmpList == null) {
tmpList = new ArrayList(2);
}
tmpList.add(value);
valueSize += value.getLength();
}
}
}
headersNum++;
encodeDataChunkWithLenPrefixLowerCase(dataOutputStream, headers.getName(i));
if (tmpList != null && !tmpList.isEmpty()) {
final int extraValuesCount = tmpList.size();
valueSize += extraValuesCount - 1; // 0 delims
if (!value1.isNull()) {
valueSize += value1.getLength();
valueSize++; // 0 delim
dataOutputStream.writeInt(valueSize);
encodeDataChunk(dataOutputStream, value1);
dataOutputStream.write(0);
} else {
dataOutputStream.writeInt(valueSize);
}
for (int j = 0; j < extraValuesCount; j++) {
encodeDataChunk(dataOutputStream, (DataChunk) tmpList.get(j));
if (j < extraValuesCount - 1) {
dataOutputStream.write(0);
}
}
tmpList.clear();
} else {
encodeDataChunkWithLenPrefix(dataOutputStream, value1);
}
}
}
return headersNum;
}
private static void encodeDataChunkWithLenPrefix(final DataOutputStream dataOutputStream,
final DataChunk dc) throws IOException {
final int len = dc.getLength();
dataOutputStream.writeInt(len);
encodeDataChunk(dataOutputStream, dc);
}
private static void encodeDataChunkWithLenPrefixLowerCase(final DataOutputStream dataOutputStream,
final DataChunk dc) throws IOException {
final int len = dc.getLength();
dataOutputStream.writeInt(len);
encodeDataChunkLowerCase(dataOutputStream, dc);
}
private static void encodeDataChunk(final DataOutputStream dataOutputStream,
final DataChunk dc) throws IOException {
if (dc.isNull()) {
return;
}
switch (dc.getType()) {
case Bytes: {
final ByteChunk bc = dc.getByteChunk();
dataOutputStream.write(bc.getBuffer(), bc.getStart(),
bc.getLength());
break;
}
case Buffer: {
final BufferChunk bufferChunk = dc.getBufferChunk();
encodeDataChunk(dataOutputStream, bufferChunk.getBuffer(),
bufferChunk.getStart(), bufferChunk.getLength());
break;
}
default: {
encodeDataChunk(dataOutputStream, dc.toString());
}
}
}
private static void encodeDataChunk(final DataOutputStream dataOutputStream,
final Buffer buffer, final int offs, final int len) throws IOException {
if (buffer.hasArray()) {
dataOutputStream.write(buffer.array(), buffer.arrayOffset() + offs, len);
} else {
final int lim = offs + len;
for (int i = offs; i < lim; i++) {
dataOutputStream.write(buffer.get(i));
}
}
}
private static void encodeDataChunk(final DataOutputStream dataOutputStream,
final String s) throws IOException {
final int len = s.length();
for (int i = 0; i < len; i++) {
final char c = s.charAt(i);
if (c != 0) {
dataOutputStream.write(c);
} else {
dataOutputStream.write(' ');
}
}
}
private static void encodeDataChunkLowerCase(final DataOutputStream dataOutputStream,
final DataChunk dc) throws IOException {
if (dc.isNull()) {
return;
}
switch (dc.getType()) {
case Bytes: {
final ByteChunk bc = dc.getByteChunk();
encodeDataChunkLowerCase(dataOutputStream, bc.getBuffer(), bc.getStart(),
bc.getLength());
break;
}
case Buffer: {
final BufferChunk bufferChunk = dc.getBufferChunk();
encodeDataChunkLowerCase(dataOutputStream, bufferChunk.getBuffer(),
bufferChunk.getStart(), bufferChunk.getLength());
break;
}
default: {
encodeDataChunkLowerCase(dataOutputStream, dc.toString());
}
}
}
private static void encodeDataChunkLowerCase(final DataOutputStream dataOutputStream,
final byte[] array, final int offs, final int len) throws IOException {
final int lim = offs + len;
for (int i = offs; i < lim; i++) {
dataOutputStream.write(Ascii.toLower(array[i]));
}
}
private static void encodeDataChunkLowerCase(final DataOutputStream dataOutputStream,
final Buffer buffer, final int offs, final int len) throws IOException {
if (buffer.hasArray()) {
encodeDataChunkLowerCase(dataOutputStream, buffer.array(),
buffer.arrayOffset() + offs, len);
} else {
final int lim = offs + len;
for (int i = offs; i < lim; i++) {
dataOutputStream.write(Ascii.toLower(buffer.get(i)));
}
}
}
private static void encodeDataChunkLowerCase(
final DataOutputStream dataOutputStream,
final String s) throws IOException {
final int len = s.length();
for (int i = 0; i < len; i++) {
final char c = s.charAt(i);
if (c != 0) {
dataOutputStream.write(Ascii.toLower(c));
} else {
dataOutputStream.write(' ');
}
}
}
private static void encodeHeaderValue(
final DataOutputStream dataOutputStream,
final byte[] nameBytes, final byte[] valueBytes) throws IOException {
encodeHeaderValue(dataOutputStream, nameBytes, valueBytes, 0, valueBytes.length);
}
private static void encodeHeaderValue(
final DataOutputStream dataOutputStream,
final byte[] nameBytes, final byte[] valueBytes,
final int valueStart, final int valueLen) throws IOException {
dataOutputStream.writeInt(nameBytes.length);
dataOutputStream.write(nameBytes);
dataOutputStream.writeInt(valueLen);
dataOutputStream.write(valueBytes, valueStart, valueLen);
}
private static void encodeHeaderValue(
final DataOutputStream dataOutputStream,
final byte[] nameBytes,
final byte[] valuePart1, final byte[] valuePart2, final byte[] valuePart3)
throws IOException {
dataOutputStream.writeInt(nameBytes.length);
dataOutputStream.write(nameBytes);
dataOutputStream.writeInt(valuePart1.length + valuePart2.length + valuePart3.length);
dataOutputStream.write(valuePart1);
dataOutputStream.write(valuePart2);
dataOutputStream.write(valuePart3);
}
}
