com.sun.grizzly.http.server.GrizzlyResponse Maven / Gradle / Ivy
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package com.sun.grizzly.http.server;
import com.sun.grizzly.CompletionHandler;
import com.sun.grizzly.Connection;
import com.sun.grizzly.Grizzly;
import com.sun.grizzly.ThreadCache;
import com.sun.grizzly.filterchain.FilterChainContext;
import com.sun.grizzly.http.HttpResponsePacket;
import com.sun.grizzly.http.server.io.GrizzlyOutputStream;
import com.sun.grizzly.http.server.io.GrizzlyWriter;
import com.sun.grizzly.http.server.io.OutputBuffer;
import com.sun.grizzly.http.util.CharChunk;
import com.sun.grizzly.http.Cookie;
import com.sun.grizzly.http.util.CookieSerializerUtils;
import com.sun.grizzly.http.util.FastHttpDateFormat;
import com.sun.grizzly.http.util.HttpRequestURIDecoder;
import com.sun.grizzly.http.util.HttpStatus;
import com.sun.grizzly.http.util.MessageBytes;
import com.sun.grizzly.http.util.MimeHeaders;
import com.sun.grizzly.http.util.StringManager;
import com.sun.grizzly.http.util.UEncoder;
import com.sun.grizzly.utils.DelayedExecutor;
import com.sun.grizzly.utils.DelayedExecutor.DelayQueue;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.TimeZone;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Wrapper object for the Coyote response.
*
* @author Remy Maucherat
* @author Craig R. McClanahan
* @version $Revision: 1.2 $ $Date: 2006/11/02 20:01:44 $
*/
public class GrizzlyResponse {
private static final Logger LOGGER = Grizzly.logger(GrizzlyResponse.class);
private static final ThreadCache.CachedTypeIndex CACHE_IDX =
ThreadCache.obtainIndex(GrizzlyResponse.class, 2);
public static GrizzlyResponse create() {
final GrizzlyResponse grizzlyResponse =
ThreadCache.takeFromCache(CACHE_IDX);
if (grizzlyResponse != null) {
return grizzlyResponse;
}
return new GrizzlyResponse();
}
static DelayQueue createDelayQueue(DelayedExecutor delayedExecutor) {
return delayedExecutor.createDelayQueue(new DelayQueueWorker(),
new DelayQueueResolver());
}
// ----------------------------------------------------------- Constructors
protected GrizzlyResponse() {
this(false, false);
}
public GrizzlyResponse(boolean chunkingDisabled, boolean cacheEnabled) {
//outputBuffer = new GrizzlyOutputBuffer(chunkingDisabled);
//outputStream = new GrizzlyOutputStream(outputBuffer);
//writer = new GrizzlyWriter(outputBuffer);
urlEncoder.addSafeCharacter('/');
this.cacheEnabled = cacheEnabled;
}
// ----------------------------------------------------- Instance Variables
private boolean cacheEnabled = false;
private String detailErrorMsg;
private static final String HTTP_RESPONSE_DATE_HEADER =
"EEE, dd MMM yyyy HH:mm:ss zzz";
/**
* The date format we will use for creating date headers.
*/
protected SimpleDateFormat format = null;
/**
* Descriptive information about this Response implementation.
*/
protected static final String info =
"com.sun.grizzly.tcp.http11.GrizzlyResponse/1.0";
/**
* The string manager for this package.
*/
protected final static StringManager sm =
StringManager.getManager(Constants.Package);
// ------------------------------------------------------------- Properties
/**
* The request with which this response is associated.
*/
protected GrizzlyRequest request = null;
/**
* Coyote response.
*/
protected HttpResponsePacket response;
/**
* Grizzly {@link com.sun.grizzly.filterchain.FilterChain} context,
* related to this HTTP request/response
*/
protected FilterChainContext ctx;
/**
* The associated output buffer.
*/
// START OF SJSAS 6231069
//protected OutputBuffer outputBuffer = new OutputBuffer();
protected OutputBuffer outputBuffer;
// END OF SJSAS 6231069
/**
* The associated output stream.
*/
// START OF SJSAS 6231069
/*protected GrizzlyOutputStream outputStream =
new GrizzlyOutputStream(outputBuffer);*/
protected GrizzlyOutputStream outputStream;
// END OF SJSAS 6231069
/**
* The associated writer.
*/
// START OF SJSAS 6231069
// protected GrizzlyWriter writer = new GrizzlyWriter(outputBuffer);
protected GrizzlyWriter writer;
// END OF SJSAS 6231069
/**
* The application commit flag.
*/
protected boolean appCommitted = false;
/**
* The included flag.
*/
protected boolean included = false;
/**
* The characterEncoding flag
*/
private boolean isCharacterEncodingSet = false;
/**
* The contextType flag
*/
private boolean isContentTypeSet = false;
/**
* The error flag.
*/
protected boolean error = false;
/**
* The set of Cookies associated with this Response.
*/
protected final List cookies = new ArrayList(4);
/**
* Using output stream flag.
*/
protected boolean usingOutputStream = false;
/**
* Using writer flag.
*/
protected boolean usingWriter = false;
/**
* URL encoder.
*/
protected UEncoder urlEncoder = new UEncoder();
/**
* Recyclable buffer to hold the redirect URL.
*/
protected MessageBytes redirectURLCC = new MessageBytes();
protected DelayedExecutor.DelayQueue delayQueue;
protected boolean isSuspended;
private final SuspendedRunnable suspendedRunnable = new SuspendedRunnable();
private final Object suspendSync = new Object();
private SuspendStatus suspendStatus;
// --------------------------------------------------------- Public Methods
public void initialize(GrizzlyRequest request,
HttpResponsePacket response,
FilterChainContext ctx,
DelayedExecutor.DelayQueue delayQueue,
SuspendStatus suspendStatus) {
this.request = request;
this.response = response;
outputBuffer = new OutputBuffer();
outputBuffer.initialize(response, ctx);
this.ctx = ctx;
this.delayQueue = delayQueue;
this.suspendStatus = suspendStatus;
}
/**
* Return the Request with which this Response is associated.
*/
public GrizzlyRequest getRequest() {
return request;
}
/**
* Get the Coyote response.
*/
public HttpResponsePacket getResponse() {
return response;
}
/**
* Release all object references, and initialize instance variables, in
* preparation for reuse of this object.
*/
public void recycle() {
recycle(true);
}
protected final void recycle(boolean isRecycleUnderlyingResponse) {
suspendStatus = null;
delayQueue = null;
suspendedRunnable.reset();
outputBuffer.recycle();
usingOutputStream = false;
usingWriter = false;
appCommitted = false;
included = false;
error = false;
isContentTypeSet = false;
isCharacterEncodingSet = false;
detailErrorMsg = null;
request = null;
if (isRecycleUnderlyingResponse) {
response.recycle();
}
response = null;
ctx = null;
isSuspended = false;
cookies.clear();
/*
if (System.getSecurityManager() != null) {
if (outputStream != null) {
outputStream.clear();
outputStream = null;
}
if (writer != null) {
writer.clear();
writer = null;
}
} else {
writer.recycle();
}
*/
cacheEnabled = false;
}
// ------------------------------------------------------- Response Methods
/**
* Encode the session identifier associated with this response
* into the specified URL, if necessary.
*
* @param url URL to be encoded
*/
public String encodeURL(String url) {
String absolute = toAbsolute(url, false);
if (isEncodeable(absolute)) {
// W3c spec clearly said
if (url.equalsIgnoreCase("")){
url = absolute;
}
return toEncoded(url,request.getSession().getIdInternal());
} else {
return (url);
}
}
/**
* Return true if the specified URL should be encoded with
* a session identifier. This will be true if all of the following
* conditions are met:
*
* - The request we are responding to asked for a valid session
*
- The requested session ID was not received via a cookie
*
- The specified URL points back to somewhere within the web
* application that is responding to this request
*
*
* @param location Absolute URL to be validated
*/
protected boolean isEncodeable(final String location) {
if (location == null)
return (false);
// Is this an intra-document reference?
if (location.startsWith("#"))
return (false);
final GrizzlySession session = request.getSession(false);
if (session == null)
return (false);
if (request.isRequestedSessionIdFromCookie())
return (false);
return doIsEncodeable(request, session, location);
}
private boolean doIsEncodeable(GrizzlyRequest request, GrizzlySession session,
String location){
// Is this a valid absolute URL?
URL url = null;
try {
url = new URL(location);
} catch (MalformedURLException e) {
return (false);
}
// Does this URL match down to (and including) the context path?
if (!request.getScheme().equalsIgnoreCase(url.getProtocol()))
return (false);
if (!request.getServerName().equalsIgnoreCase(url.getHost()))
return (false);
int serverPort = request.getServerPort();
if (serverPort == -1) {
if ("https".equals(request.getScheme()))
serverPort = 443;
else
serverPort = 80;
}
int urlPort = url.getPort();
if (urlPort == -1) {
if ("https".equals(url.getProtocol()))
urlPort = 443;
else
urlPort = 80;
}
if (serverPort != urlPort)
return (false);
String contextPath = "/";
if ( contextPath != null ) {
String file = url.getFile();
if ((file == null) || !file.startsWith(contextPath))
return (false);
if( file.indexOf(";jsessionid=" + session.getIdInternal()) >= 0 )
return (false);
}
// This URL belongs to our web application, so it is encodeable
return (true);
}
/**
* Return the number of bytes actually written to the output stream.
*/
public int getContentCount() {
// TODO re-enable
//return outputBuffer.getContentWritten();
return 0;
}
/**
* Set the application commit flag.
*
* @param appCommitted The new application committed flag value
*/
public void setAppCommitted(boolean appCommitted) {
this.appCommitted = appCommitted;
}
/**
* Application commit flag accessor.
*/
public boolean isAppCommitted() {
return (this.appCommitted || isCommitted() || isBufferSuspended()
|| ((getContentLength() > 0)
&& (getContentCount() >= getContentLength())));
}
/**
* Return the "processing inside an include" flag.
*/
public boolean getIncluded() {
return included;
}
/**
* Set the "processing inside an include" flag.
*
* @param included true if we are currently inside a
* RequestDispatcher.include(), else false
*/
public void setIncluded(boolean included) {
this.included = included;
}
/**
* Return descriptive information about this Response implementation and
* the corresponding version number, in the format
* <description>/<version>.
*/
public String getInfo() {
return (info);
}
/**
* Return the output stream associated with this Response.
*/
public OutputStream getStream() {
if (outputStream == null) {
outputStream = new GrizzlyOutputStream(outputBuffer);
}
return outputStream;
}
/**
* Set the output stream associated with this Response.
*
* @param stream The new output stream
*/
public void setStream(OutputStream stream) {
// This method is evil
}
/**
* Suspended flag accessor.
*/
public boolean isBufferSuspended() {
// TODO re-enable
//return outputBuffer.isSuspended();
return false;
}
/**
* Set the error flag.
*/
public void setError() {
error = true;
}
/**
* Error flag accessor.
*/
public boolean isError() {
return error;
}
// BEGIN S1AS 4878272
/**
* Sets detail error message.
*
* @param message detail error message
*/
public void setDetailMessage(String message) {
this.detailErrorMsg = message;
}
/**
* Gets detail error message.
*
* @return the detail error message
*/
public String getDetailMessage() {
return this.detailErrorMsg;
}
// END S1AS 4878272
/**
* Create and return a ServletOutputStream to write the content
* associated with this Response.
*
* @exception java.io.IOException if an input/output error occurs
*/
public GrizzlyOutputStream createOutputStream()
throws IOException {
// Probably useless
if (outputStream == null) {
outputStream = new GrizzlyOutputStream(outputBuffer);
}
return outputStream;
}
/**
* Perform whatever actions are required to flush and close the output
* stream or writer, in a single operation.
*
* @exception java.io.IOException if an input/output error occurs
*/
public void finish()
throws IOException {
// Writing leftover bytes
try {
outputBuffer.endRequest();
} catch(IOException e) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, "ACTION_CLIENT_FLUSH", e);
}
} catch(Throwable t) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING, "ACTION_CLIENT_FLUSH", t);
}
}
}
/**
* Return the content length that was set or calculated for this Response.
*/
public int getContentLength() {
checkResponse();
return ((int) response.getContentLength());
}
/**
* Return the content type that was set or calculated for this response,
* or null if no content type was set.
*/
public String getContentType() {
checkResponse();
return (response.getContentType());
}
/**
* Return a PrintWriter that can be used to render error messages,
* regardless of whether a stream or writer has already been acquired.
*
* @return Writer which can be used for error reports. If the response is
* not an error report returned using sendError or triggered by an
* unexpected exception thrown during the servlet processing
* (and only in that case), null will be returned if the response stream
* has already been used.
*
* @exception java.io.IOException if an input/output error occurs
*/
public PrintWriter getReporter() throws IOException {
// TODO re-enable
/*
if (outputBuffer.isNew()) {
outputBuffer.checkConverter();
if (writer == null) {
writer = new GrizzlyWriter(outputBuffer);
}
return writer;
} else {
return null;
}
*/
return null;
}
// ------------------------------------------------ ServletResponse Methods
/**
* Flush the buffer and commit this response.
*
* @exception java.io.IOException if an input/output error occurs
*/
public void flushBuffer()
throws IOException {
outputBuffer.flush();
}
/**
* Return the actual buffer size used for this Response.
*/
public int getBufferSize() {
// TODO re-enabled
//return outputBuffer.getBufferSize();
return 0;
}
/**
* Return the character encoding used for this Response.
*/
public String getCharacterEncoding() {
checkResponse();
return (response.getCharacterEncoding());
}
/**
* Return the servlet output stream associated with this Response.
*
* @exception IllegalStateException if getWriter has
* already been called for this response
* @exception java.io.IOException if an input/output error occurs
*/
public GrizzlyOutputStream getOutputStream()
throws IOException {
if (usingWriter)
throw new IllegalStateException
(sm.getString("response.getOutputStream.ise"));
usingOutputStream = true;
if (outputStream == null) {
outputStream = new GrizzlyOutputStream(outputBuffer);
}
return outputStream;
}
/**
* Return the Locale assigned to this response.
*/
public Locale getLocale() {
checkResponse();
// TODO re-enabled
//return (response.getLocale());
return Locale.getDefault();
}
/**
* Return the writer associated with this Response.
*
* @exception IllegalStateException if getOutputStream has
* already been called for this response
* @exception java.io.IOException if an input/output error occurs
*/
public GrizzlyWriter getWriter()
throws IOException {
if (usingOutputStream)
throw new IllegalStateException
(sm.getString("response.getWriter.ise"));
/*
* If the response's character encoding has not been specified as
* described in getCharacterEncoding (i.e., the method
* just returns the default value ISO-8859-1),
* getWriter updates it to ISO-8859-1
* (with the effect that a subsequent call to getContentType() will
* include a charset=ISO-8859-1 component which will also be
* reflected in the Content-Type response header, thereby satisfying
* the Servlet spec requirement that containers must communicate the
* character encoding used for the servlet response's writer to the
* client).
*/
setCharacterEncoding(getCharacterEncoding());
usingWriter = true;
// TODO re-enable
//outputBuffer.checkConverter();
if (writer == null) {
outputBuffer.processingChars();
writer = new GrizzlyWriter(outputBuffer);
}
return writer;
}
/**
* Has the output of this response already been committed?
*/
public boolean isCommitted() {
checkResponse();
return (response.isCommitted());
}
/**
* TODO DOCS
* @throws IOException
*/
public void flush() throws IOException {
outputBuffer.flush();
}
/**
* @return the {@link OutputBuffer} associated with this
* GrizzlyResponse.
*/
public OutputBuffer getOutputBuffer() {
return outputBuffer;
}
/**
* Clear any content written to the buffer.
*
* @exception IllegalStateException if this response has already
* been committed
*/
public void reset() {
checkResponse();
if (included)
return; // Ignore any call from an included servlet
//response.reset();
outputBuffer.reset();
}
/**
* Reset the data buffer but not any status or header information.
*
* @exception IllegalStateException if the response has already
* been committed
*/
public void resetBuffer() {
resetBuffer(false);
}
/**
* Reset the data buffer and the using Writer/Stream flags but not any
* status or header information.
*
* @param resetWriterStreamFlags true if the internal
* usingWriter, usingOutputStream,
* isCharacterEncodingSet flags should also be reset
*
* @exception IllegalStateException if the response has already
* been committed
*/
public void resetBuffer(boolean resetWriterStreamFlags) {
if (isCommitted())
throw new IllegalStateException
(sm.getString("response.resetBuffer.ise"));
outputBuffer.reset();
if(resetWriterStreamFlags) {
usingOutputStream = false;
usingWriter = false;
isCharacterEncodingSet = false;
}
}
/**
* Set the buffer size to be used for this Response.
*
* @param size The new buffer size
*
* @exception IllegalStateException if this method is called after
* output has been committed for this response
*/
public void setBufferSize(int size) {
// TODO re-enabled
// if (isCommitted() || !outputBuffer.isNew())
// throw new IllegalStateException
// (sm.getString("response.setBufferSize.ise"));
//
// outputBuffer.setBufferSize(size);
}
/**
* Set the content length (in bytes) for this Response.
*
* @param length The new content length
*/
public void setContentLengthLong(long length) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
if (usingWriter)
return;
response.setContentLength(length);
}
/**
* Set the content length (in bytes) for this Response.
*
* @param length The new content length
*/
public void setContentLength(int length) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
if (usingWriter)
return;
response.setContentLength(length);
}
/**
* Set the content type for this Response.
*
* @param type The new content type
*/
public void setContentType(String type) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
// Ignore charset if getWriter() has already been called
if (usingWriter) {
if (type != null) {
int index = type.indexOf(";");
if (index != -1) {
type = type.substring(0, index);
}
}
}
response.setContentType(type);
// Check to see if content type contains charset
if (type != null) {
int index = type.indexOf(";");
if (index != -1) {
int len = type.length();
index++;
while (index < len && Character.isSpace(type.charAt(index))) {
index++;
}
if (index+7 < len
&& type.charAt(index) == 'c'
&& type.charAt(index+1) == 'h'
&& type.charAt(index+2) == 'a'
&& type.charAt(index+3) == 'r'
&& type.charAt(index+4) == 's'
&& type.charAt(index+5) == 'e'
&& type.charAt(index+6) == 't'
&& type.charAt(index+7) == '=') {
isCharacterEncodingSet = true;
}
}
}
isContentTypeSet = true;
}
/*
* Overrides the name of the character encoding used in the body
* of the request. This method must be called prior to reading
* request parameters or reading input using getReader().
*
* @param charset String containing the name of the chararacter encoding.
*/
public void setCharacterEncoding(String charset) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
// Ignore any call made after the getWriter has been invoked
// The default should be used
if (usingWriter)
return;
response.setCharacterEncoding(charset);
isCharacterEncodingSet = true;
}
/**
* Set the Locale that is appropriate for this response, including
* setting the appropriate character encoding.
*
* @param locale The new locale
*/
public void setLocale(Locale locale) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
// TODO re-enabled
//response.setLocale(locale);
// Ignore any call made after the getWriter has been invoked.
// The default should be used
if (usingWriter)
return;
if (isCharacterEncodingSet) {
return;
}
}
// --------------------------------------------------- HttpResponsePacket Methods
/**
* Return an array of all cookies set for this response, or
* a zero-length array if no cookies have been set.
*/
public Cookie[] getCookies() {
return ((Cookie[]) cookies.toArray(new Cookie[cookies.size()]));
}
/**
* Return the value for the specified header, or null if this
* header has not been set. If more than one value was added for this
* name, only the first is returned; use getHeaderValues() to retrieve all
* of them.
*
* @param name Header name to look up
*/
public String getHeader(String name) {
checkResponse();
return response.getHeaders().getHeader(name);
}
/**
* Return an array of all the header names set for this response, or
* a zero-length array if no headers have been set.
*/
public String[] getHeaderNames() {
checkResponse();
MimeHeaders headers = response.getHeaders();
int n = headers.size();
String[] result = new String[n];
for (int i = 0; i < n; i++) {
result[i] = headers.getName(i).toString();
}
return result;
}
/**
* Return an array of all the header values associated with the
* specified header name, or an zero-length array if there are no such
* header values.
*
* @param name Header name to look up
*/
public String[] getHeaderValues(String name) {
checkResponse();
final Enumeration e = response.getHeaders().values(name);
final Collection result = new LinkedList();
while (e.hasMoreElements()) {
result.add(e.nextElement());
}
return result.toArray(new String[0]);
}
/**
* Return the error message that was set with sendError()
* for this Response.
*/
public String getMessage() {
checkResponse();
return response.getReasonPhrase();
}
/**
* Return the HTTP status code associated with this Response.
*/
public int getStatus() {
checkResponse();
return response.getStatus();
}
/**
* Reset this response, and specify the values for the HTTP status code
* and corresponding message.
*
* @exception IllegalStateException if this response has already been
* committed
*/
public void reset(int status, String message) {
reset();
setStatus(status, message);
}
// -------------------------------------------- HttpServletResponse Methods
/**
* Add the specified Cookie to those that will be included with
* this Response.
*
* @param cookie Cookie to be added
*/
public void addCookie(final Cookie cookie) {
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
final StringBuilder sb = new StringBuilder();
//web application code can receive a IllegalArgumentException
//from the appendCookieValue invokation
if (System.getSecurityManager() != null) {
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public Object run() {
CookieSerializerUtils.serializeServerCookie(sb, cookie);
return null;
}
});
} else {
CookieSerializerUtils.serializeServerCookie(sb, cookie);
}
// if we reached here, no exception, cookie is valid
// the header name is Set-Cookie for both "old" and v.1 ( RFC2109 )
// RFC2965 is not supported by browsers and the Servlet spec
// asks for 2109.
addHeader("Set-Cookie", sb.toString());
cookies.add(cookie);
}
/**
* Add the specified date header to the specified value.
*
* @param name Name of the header to set
* @param value Date value to be set
*/
public void addDateHeader(String name, long value) {
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included) {
return;
}
if (format == null) {
format = new SimpleDateFormat(HTTP_RESPONSE_DATE_HEADER,
Locale.US);
format.setTimeZone(TimeZone.getTimeZone("GMT"));
}
addHeader(name, FastHttpDateFormat.formatDate(value, format));
}
/**
* Add the specified header to the specified value.
*
* @param name Name of the header to set
* @param value Value to be set
*/
public void addHeader(String name, String value) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
response.addHeader(name, value);
}
/**
* Add the specified integer header to the specified value.
*
* @param name Name of the header to set
* @param value Integer value to be set
*/
public void addIntHeader(String name, int value) {
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
addHeader(name, "" + value);
}
/**
* Has the specified header been set already in this response?
*
* @param name Name of the header to check
*/
public boolean containsHeader(String name) {
checkResponse();
return response.containsHeader(name);
}
/**
* Send an acknowledgment of a request. An acknowledgment in this
* case is simply an HTTP response status line, i.e.
* HTTP/1.1 [STATUS] [REASON-PHRASE].
*
* @exception java.io.IOException if an input/output error occurs
*/
public void sendAcknowledgement() throws IOException {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
response.setAcknowledgement(true);
outputBuffer.acknowledge();
}
/**
* Send an error response with the specified status and a
* default message.
*
* @param status HTTP status code to send
*
* @exception IllegalStateException if this response has
* already been committed
* @exception java.io.IOException if an input/output error occurs
*/
public void sendError(int status)
throws IOException {
sendError(status, null);
}
/**
* Send an error response with the specified status and message.
*
* @param status HTTP status code to send
* @param message Corresponding message to send
*
* @exception IllegalStateException if this response has
* already been committed
* @exception java.io.IOException if an input/output error occurs
*/
public void sendError(int status, String message) throws IOException {
checkResponse();
if (isCommitted())
throw new IllegalStateException
(sm.getString("response.sendError.ise"));
// Ignore any call from an included servlet
if (included)
return;
setError();
response.setStatus(status);
response.setReasonPhrase(message);
//response.setMessage(message);
// Clear any data content that has been buffered
resetBuffer();
// Cause the response to be finished (from the application perspective)
// setSuspended(true);
}
/**
* Send a temporary redirect to the specified redirect location URL.
*
* @param location Location URL to redirect to
*
* @exception IllegalStateException if this response has
* already been committed
* @exception java.io.IOException if an input/output error occurs
*/
public void sendRedirect(String location)
throws IOException {
if (isCommitted())
throw new IllegalStateException
(sm.getString("response.sendRedirect.ise"));
// Ignore any call from an included servlet
if (included)
return;
// Clear any data content that has been buffered
resetBuffer();
// Generate a temporary redirect to the specified location
try {
String absolute = toAbsolute(location, true);
// END RIMOD 4642650
setStatus(HttpStatus.FOUND_302);
setHeader("Location", absolute);
// According to RFC2616 section 10.3.3 302 Found,
// the response SHOULD contain a short hypertext note with
// a hyperlink to the new URI.
setContentType("text/html");
setLocale(Locale.getDefault());
String filteredMsg = filter(absolute);
StringBuilder sb = new StringBuilder(150 + absolute.length());
sb.append("\r\n");
sb.append("Document moved \r\n");
sb.append("Document moved
\r\n");
sb.append("This document has moved here.\r\n");
sb.append("\r\n");
sb.append("\r\n");
try {
getWriter().write(sb.toString());
getWriter().flush();
} catch (IllegalStateException ise1) {
try {
// TODO re-enable
//getOutputStream().print(sb.toString());
} catch (IllegalStateException ise2) {
// ignore; the RFC says "SHOULD" so it is acceptable
// to omit the body in case of an error
}
}
} catch (IllegalArgumentException e) {
setStatus(HttpStatus.NOT_FOUND_404);
}
// Cause the response to be finished (from the application perspective)
// setSuspended(true);
}
/**
* Set the specified date header to the specified value.
*
* @param name Name of the header to set
* @param value Date value to be set
*/
public void setDateHeader(String name, long value) {
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included) {
return;
}
if (format == null) {
format = new SimpleDateFormat(HTTP_RESPONSE_DATE_HEADER,
Locale.US);
format.setTimeZone(TimeZone.getTimeZone("GMT"));
}
setHeader(name, FastHttpDateFormat.formatDate(value, format));
}
/**
* Set the specified header to the specified value.
*
* @param name Name of the header to set
* @param value Value to be set
*/
public void setHeader(String name, String value) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
response.setHeader(name, value);
}
/**
* Set the specified integer header to the specified value.
*
* @param name Name of the header to set
* @param value Integer value to be set
*/
public void setIntHeader(String name, int value) {
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
setHeader(name, "" + value);
}
/**
* Set the HTTP status to be returned with this response.
*
* @param status The new HTTP status
*/
public void setStatus(int status) {
setStatus(status, null);
}
/**
* Set the HTTP status and message to be returned with this response.
*
* @param status The new HTTP status
* @param message The associated text message
*
*/
public void setStatus(int status, String message) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
response.setStatus(status);
response.setReasonPhrase(message);
}
/**
* Set the HTTP status and message to be returned with this response.
* @param status {@link HttpStatus} to set
*/
public void setStatus(HttpStatus status) {
checkResponse();
if (isCommitted())
return;
// Ignore any call from an included servlet
if (included)
return;
status.setValues(response);
}
// ------------------------------------------------------ Protected Methods
/**
* Convert (if necessary) and return the absolute URL that represents the
* resource referenced by this possibly relative URL. If this URL is
* already absolute, return it unchanged.
*
* @param location URL to be (possibly) converted and then returned
*
* @exception IllegalArgumentException if a MalformedURLException is
* thrown when converting the relative URL to an absolute one
*/
protected String toAbsolute(String location, boolean normalize) {
if (location == null)
return (location);
boolean leadingSlash = location.startsWith("/");
if (leadingSlash
|| (!leadingSlash && (location.indexOf("://") == -1))) {
redirectURLCC.recycle();
String scheme = request.getScheme();
String name = request.getServerName();
int port = request.getServerPort();
CharChunk cc = redirectURLCC.getCharChunk();
try {
cc.append(scheme, 0, scheme.length());
cc.append("://", 0, 3);
cc.append(name, 0, name.length());
if ((scheme.equals("http") && port != 80)
|| (scheme.equals("https") && port != 443)) {
cc.append(':');
String portS = port + "";
cc.append(portS, 0, portS.length());
}
if (!leadingSlash) {
String relativePath = request.getDecodedRequestURI();
int pos = relativePath.lastIndexOf('/');
relativePath = relativePath.substring(0, pos);
String encodedURI = null;
final String frelativePath = relativePath;
if (System.getSecurityManager() != null ){
try{
encodedURI = (String)AccessController.doPrivileged(
new PrivilegedExceptionAction(){
@Override
public Object run() throws IOException{
return urlEncoder.encodeURL(frelativePath);
}
});
} catch (PrivilegedActionException pae){
final IllegalArgumentException iae =
new IllegalArgumentException(location, pae.getCause());
throw iae;
}
} else {
encodedURI = urlEncoder.encodeURL(relativePath);
}
cc.append(encodedURI, 0, encodedURI.length());
cc.append('/');
}
cc.append(location, 0, location.length());
} catch (IOException e) {
final IllegalArgumentException iae =
new IllegalArgumentException(location, e);
throw iae;
}
if (normalize){
HttpRequestURIDecoder.normalize(redirectURLCC);
}
return cc.toString();
} else {
return (location);
}
}
/**
* Filter the specified message string for characters that are sensitive
* in HTML. This avoids potential attacks caused by including JavaScript
* codes in the request URL that is often reported in error messages.
*
* @param message The message string to be filtered
*/
public static String filter(String message) {
if (message == null)
return (null);
char content[] = new char[message.length()];
message.getChars(0, message.length(), content, 0);
final StringBuilder result = new StringBuilder(content.length + 50);
for (int i = 0; i < content.length; i++) {
switch (content[i]) {
case '<':
result.append("<");
break;
case '>':
result.append(">");
break;
case '&':
result.append("&");
break;
case '"':
result.append(""");
break;
default:
result.append(content[i]);
}
}
return (result.toString());
}
/**
* Return the specified URL with the specified session identifier
* suitably encoded.
*
* @param url URL to be encoded with the session id
* @param sessionId Session id to be included in the encoded URL
*/
protected String toEncoded(String url, String sessionId) {
if ((url == null) || (sessionId == null))
return (url);
String path = url;
String query = "";
String anchor = "";
int question = url.indexOf('?');
if (question >= 0) {
path = url.substring(0, question);
query = url.substring(question);
}
int pound = path.indexOf('#');
if (pound >= 0) {
anchor = path.substring(pound);
path = path.substring(0, pound);
}
StringBuilder sb = new StringBuilder(path);
if( sb.length() > 0 ) { // jsessionid can't be first.
sb.append(";jsessionid=");
sb.append(sessionId);
}
String jrouteId = request.getHeader(Constants.PROXY_JROUTE);
if (jrouteId != null) {
sb.append(":");
sb.append(jrouteId);
}
sb.append(anchor);
sb.append(query);
return (sb.toString());
}
/**
* Is the file cache enabled?
*/
public boolean isCacheEnabled() {
return cacheEnabled;
}
/**
* Enable/disable the cache
*/
public void enableCache(boolean cacheEnabled) {
this.cacheEnabled = cacheEnabled;
// TODO re-enable
//outputBuffer.enableCache(cacheEnabled);
}
/**
* Return the underlying {@link com.sun.grizzly.tcp.OutputBuffer}
*/
//public GrizzlyOutputBuffer getOutputBuffer(){
// return outputBuffer;
//}
/**
* Enabled or Disable response chunking.
* @param chunkingDisabled
*/
public void setChunkingDisabled(boolean chunkingDisabled) {
// if (outputBuffer != null){
// outputBuffer.setChunkingDisabled(chunkingDisabled);
// }
}
/**
* Is chunking enabled?
*/
public boolean getChunkingDisabled() {
// if (outputBuffer != null){
// outputBuffer.getChunkingDisabled();
// }
// return true; // The default.
return true;
}
/**
* Return true if that {@link com.sun.grizzly.http.server.GrizzlyResponse#suspend()} has been
* invoked and set to true
* @return true if that {@link com.sun.grizzly.http.server.GrizzlyResponse#suspend()} has been
* invoked and set to true
*/
public boolean isSuspended() {
checkResponse();
synchronized(suspendSync) {
return isSuspended;
}
}
/**
* Suspend the {@link GrizzlyResponse}. Suspending a {@link GrizzlyResponse} will
* tell the underlying container to avoid recycling objects associated with
* the current instance, and also to avoid commiting response.
*/
public void suspend() {
suspend(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
}
/**
* Suspend the {@link com.sun.grizzly.http.server.GrizzlyResponse}. Suspending a {@link com.sun.grizzly.http.server.GrizzlyResponse} will
* tell the underlying container to avoid recycling objects associated with
* the current instance, and also to avoid commiting response.
*
* @param timeout The maximum amount of time, in milliseconds,
* a {@link com.sun.grizzly.http.server.GrizzlyResponse} can be suspended. When the timeout expires (because
* nothing has been written or because the {@link GrizzlyResponse#resume()}
* or {@link com.sun.grizzly.http.server.GrizzlyResponse#cancel()}), the {@link com.sun.grizzly.http.server.GrizzlyResponse} will be automatically
* resumed and commited. Usage of any methods of a {@link com.sun.grizzly.http.server.GrizzlyResponse} that
* times out will throw an {@link IllegalStateException}.
*
*/
public void suspend(long timeout, TimeUnit timeunit) {
suspend(timeout, timeunit, null);
}
/**
* Suspend the {@link com.sun.grizzly.http.server.GrizzlyResponse}. Suspending a {@link com.sun.grizzly.http.server.GrizzlyResponse} will
* tell the underlying container to avoid recycling objects associated with
* the current instance, and also to avoid committing response. When the
* {@link com.sun.grizzly.http.server.GrizzlyResponse#resume()} is invoked, the container will
* make sure {@link CompletionHandler#completed(Object)}
* is invoked with the original attachment. When the
* {@link com.sun.grizzly.http.server.GrizzlyResponse#cancel()} is invoked, the container will
* make sure {@link com.sun.grizzly.CompletionHandler#cancelled()}
* is invoked with the original attachment. If the timeout expires, the
* {@link com.sun.grizzly.CompletionHandler#cancelled()} is invoked with the original attachment and
* the {@link GrizzlyResponse} committed.
*
* @param timeout The maximum amount of time, in milliseconds,
* a {@link com.sun.grizzly.http.server.GrizzlyResponse} can be suspended. When the timeout expires (because
* nothing has been written or because the {@link com.sun.grizzly.http.server.GrizzlyResponse#resume()}
* or {@link com.sun.grizzly.http.server.GrizzlyResponse#cancel()}), the {@link com.sun.grizzly.http.server.GrizzlyResponse} will be automatically
* resumed and committed. Usage of any methods of a {@link GrizzlyResponse} that
* times out will throw an {@link IllegalStateException}.
* @param competionHandler a {@link com.sun.grizzly.CompletionHandler}
*/
public void suspend(long timeout, TimeUnit timeunit, CompletionHandler competionHandler) {
checkResponse();
synchronized(suspendSync) {
if (isSuspended) {
throw new IllegalStateException("Already Suspended");
}
suspendedRunnable.completionHandler = competionHandler;
delayQueue.add(this, timeout, timeunit);
final Connection connection = ctx.getConnection();
WebServerProbeNotifier.notifyRequestSuspended(
request.webServerFilter, connection, request);
connection.addCloseListener(suspendedRunnable);
suspendStatus.set();
isSuspended = true;
}
}
/**
* Complete the {@link com.sun.grizzly.http.server.GrizzlyResponse} and finish/commit it. If a
* {@link CompletionHandler} has been defined, its {@link CompletionHandler#completed(Object)}
* will first be invoked, then the {@link com.sun.grizzly.http.server.GrizzlyResponse#finish()}.
* Those operations commit the response.
*/
public void resume() {
checkResponse();
synchronized(suspendSync) {
if (!isSuspended || suspendedRunnable.isResuming) {
throw new IllegalStateException("Not Suspended");
}
final Connection connection = ctx.getConnection();
connection.removeCloseListener(suspendedRunnable);
final CompletionHandler completionHandler = suspendedRunnable.completionHandler;
suspendedRunnable.isResuming = true;
if (completionHandler != null) {
completionHandler.completed(this);
}
suspendedRunnable.reset();
isSuspended = false;
WebServerProbeNotifier.notifyRequestResumed(request.webServerFilter,
connection, request);
ctx.resume();
}
}
/**
* Cancel the {@link com.sun.grizzly.http.server.GrizzlyResponse} and finish/commit it. If a
* {@link CompletionHandler} has been defined, its {@link CompletionHandler#cancelled()}
* will first be invoked, then the {@link com.sun.grizzly.http.server.GrizzlyResponse#finish()}.
* Those operations commit the response.
*/
public void cancel() {
checkResponse();
synchronized (suspendSync) {
if (!isSuspended || suspendedRunnable.isResuming) {
throw new IllegalStateException("Not Suspended");
}
final Connection connection = ctx.getConnection();
connection.removeCloseListener(suspendedRunnable);
final CompletionHandler completionHandler = suspendedRunnable.completionHandler;
suspendedRunnable.isResuming = true;
if (completionHandler != null) {
completionHandler.cancelled();
}
isSuspended = false;
suspendedRunnable.reset();
WebServerProbeNotifier.notifyRequestCancelled(
request.webServerFilter, connection, request);
ctx.resume();
}
}
/**
* Make sure the {@link GrizzlyResponse} object has been set.
*/
final void checkResponse(){
if (response == null){
throw new IllegalStateException("Internal " +
"com.sun.grizzly.tcp.Response has not been set");
}
}
protected final class SuspendedRunnable implements Runnable,
Connection.CloseListener {
public CompletionHandler completionHandler;
public boolean isResuming;
public long timeoutTimeMillis;
@Override
public void run() {
synchronized (suspendSync) {
WebServerProbeNotifier.notifyRequestTimeout(
request.webServerFilter, ctx.getConnection(), request);
cancel();
}
}
private void reset() {
timeoutTimeMillis = DelayedExecutor.UNSET_TIMEOUT;
completionHandler = null;
isResuming = false;
}
@Override
public void onClosed(Connection connection) throws IOException {
cancel();
}
}
private static class DelayQueueWorker implements
DelayedExecutor.Worker {
@Override
public void doWork(GrizzlyResponse element) {
element.suspendedRunnable.run();
}
}
private static class DelayQueueResolver implements
DelayedExecutor.Resolver {
@Override
public boolean removeTimeout(GrizzlyResponse element) {
if (element.suspendedRunnable.timeoutTimeMillis != DelayedExecutor.UNSET_TIMEOUT) {
element.suspendedRunnable.timeoutTimeMillis = DelayedExecutor.UNSET_TIMEOUT;
return true;
}
return false;
}
@Override
public Long getTimeoutMillis(GrizzlyResponse element) {
return element.suspendedRunnable.timeoutTimeMillis;
}
@Override
public void setTimeoutMillis(GrizzlyResponse element, long timeoutMillis) {
element.suspendedRunnable.timeoutTimeMillis = timeoutMillis;
}
}
}