package nginx.unit;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.lang.IllegalArgumentException;
import java.lang.String;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.Enumeration;
import java.util.Locale;
import java.util.TimeZone;
import java.util.Vector;
import javax.servlet.DispatcherType;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.http.MimeTypes;
import org.eclipse.jetty.util.StringUtil;
public class Response implements HttpServletResponse {
private long req_info_ptr;
private static final String defaultCharacterEncoding = "iso-8859-1";
private String characterEncoding = defaultCharacterEncoding;
private String contentType = null;
private String contentTypeHeader = null;
private static final Charset ISO_8859_1 = StandardCharsets.ISO_8859_1;
private static final Charset UTF_8 = StandardCharsets.UTF_8;
private static final String CONTENT_TYPE = "Content-Type";
private static final byte[] SET_COOKIE_BYTES = "Set-Cookie".getBytes(ISO_8859_1);
private static final byte[] EXPIRES_BYTES = "Expires".getBytes(ISO_8859_1);
/**
* The only date format permitted when generating HTTP headers.
*/
public static final String RFC1123_DATE =
"EEE, dd MMM yyyy HH:mm:ss zzz";
private static final SimpleDateFormat format =
new SimpleDateFormat(RFC1123_DATE, Locale.US);
private static final String ZERO_DATE_STRING = dateToString(0);
private static final byte[] ZERO_DATE_BYTES = ZERO_DATE_STRING.getBytes(ISO_8859_1);
/**
* If this string is found within the comment of a cookie added with {@link #addCookie(Cookie)}, then the cookie
* will be set as HTTP ONLY.
*/
public final static String HTTP_ONLY_COMMENT = "__HTTP_ONLY__";
private OutputStream outputStream = null;
private PrintWriter writer = null;
public Response(long ptr) {
req_info_ptr = ptr;
}
/**
* Format a set cookie value by RFC6265
*
* @param name the name
* @param value the value
* @param domain the domain
* @param path the path
* @param maxAge the maximum age
* @param isSecure true if secure cookie
* @param isHttpOnly true if for http only
*/
public void addSetRFC6265Cookie(
final String name,
final String value,
final String domain,
final String path,
final long maxAge,
final boolean isSecure,
final boolean isHttpOnly)
{
// Check arguments
if (name == null || name.length() == 0) {
throw new IllegalArgumentException("Bad cookie name");
}
// Name is checked for legality by servlet spec, but can also be passed directly so check again for quoting
// Per RFC6265, Cookie.name follows RFC2616 Section 2.2 token rules
//Syntax.requireValidRFC2616Token(name, "RFC6265 Cookie name");
// Ensure that Per RFC6265, Cookie.value follows syntax rules
//Syntax.requireValidRFC6265CookieValue(value);
// Format value and params
StringBuilder buf = new StringBuilder();
buf.append(name).append('=').append(value == null ? "" : value);
// Append path
if (path != null && path.length() > 0) {
buf.append(";Path=").append(path);
}
// Append domain
if (domain != null && domain.length() > 0) {
buf.append(";Domain=").append(domain);
}
// Handle max-age and/or expires
if (maxAge >= 0) {
// Always use expires
// This is required as some browser (M$ this means you!) don't handle max-age even with v1 cookies
buf.append(";Expires=");
if (maxAge == 0)
buf.append(ZERO_DATE_STRING);
else
buf.append(dateToString(System.currentTimeMillis() + 1000L * maxAge));
buf.append(";Max-Age=");
buf.append(maxAge);
}
// add the other fields
if (isSecure)
buf.append(";Secure");
if (isHttpOnly)
buf.append(";HttpOnly");
// add the set cookie
addHeader(req_info_ptr, SET_COOKIE_BYTES,
buf.toString().getBytes(ISO_8859_1));
// Expire responses with set-cookie headers so they do not get cached.
setHeader(req_info_ptr, EXPIRES_BYTES, ZERO_DATE_BYTES);
}
@Override
public void addCookie(Cookie cookie)
{
trace("addCookie: " + cookie.getName() + "=" + cookie.getValue());
if (StringUtil.isBlank(cookie.getName())) {
throw new IllegalArgumentException("Cookie.name cannot be blank/null");
}
if (isCommitted()) {
return;
}
addCookie_(cookie);
}
private void addCookie_(Cookie cookie)
{
String comment = cookie.getComment();
boolean httpOnly = false;
if (comment != null && comment.contains(HTTP_ONLY_COMMENT)) {
httpOnly = true;
}
addSetRFC6265Cookie(cookie.getName(),
cookie.getValue(),
cookie.getDomain(),
cookie.getPath(),
cookie.getMaxAge(),
cookie.getSecure(),
httpOnly || cookie.isHttpOnly());
}
public void addSessionIdCookie(Cookie cookie)
{
trace("addSessionIdCookie: " + cookie.getName() + "=" + cookie.getValue());
if (isCommitted()) {
/*
9.3 The Include Method
... any call to HttpServletRequest.getSession() or
HttpServletRequest.getSession(boolean) that would require
adding a Cookie response header must throw an
IllegalStateException if the response has been committed.
*/
throw new IllegalStateException("Response already sent");
}
addCookie_(cookie);
}
@Override
public void addDateHeader(String name, long date)
{
trace("addDateHeader: " + name + ": " + date);
if (isCommitted()) {
return;
}
String value = dateToString(date);
addHeader(req_info_ptr, name.getBytes(ISO_8859_1),
value.getBytes(ISO_8859_1));
}
private static String dateToString(long date)
{
Date dateValue = new Date(date);
format.setTimeZone(TimeZone.getTimeZone("GMT"));
return format.format(dateValue);
}
@Override
public void addHeader(String name, String value)
{
trace("addHeader: " + name + ": " + value);
if (value == null) {
return;
}
if (isCommitted()) {
return;
}
if (CONTENT_TYPE.equalsIgnoreCase(name)) {
setContentType(value);
return;
}
addHeader(req_info_ptr, name.getBytes(ISO_8859_1),
value.getBytes(ISO_8859_1));
}
private static native void addHeader(long req_info_ptr, byte[] name, byte[] value);
@Override
public void addIntHeader(String name, int value)
{
trace("addIntHeader: " + name + ": " + value);
if (isCommitted()) {
return;
}
addIntHeader(req_info_ptr, name.getBytes(ISO_8859_1), value);
}
private static native void addIntHeader(long req_info_ptr, byte[] name, int value);
@Override
public boolean containsHeader(String name)
{
trace("containsHeader: " + name);
return containsHeader(req_info_ptr, name.getBytes(ISO_8859_1));
}
private static native boolean containsHeader(long req_info_ptr, byte[] name);
@Override
@Deprecated
public String encodeRedirectUrl(String url)
{
return encodeRedirectURL(url);
}
@Override
public String encodeRedirectURL(String url)
{
log("encodeRedirectURL: " + url);
return url;
}
@Override
@Deprecated
public String encodeUrl(String url)
{
return encodeURL(url);
}
@Override
public String encodeURL(String url)
{
log("encodeURL: " + url);
return url;
}
@Override
public String getHeader(String name)
{
trace("getHeader: " + name);
return getHeader(req_info_ptr, name.getBytes(ISO_8859_1));
}
private static native String getHeader(long req_info_ptr, byte[] name);
@Override
public Collection<String> getHeaderNames()
{
trace("getHeaderNames");
Enumeration<String> e = getHeaderNames(req_info_ptr);
if (e == null) {
return Collections.emptyList();
}
return Collections.list(e);
}
private static native Enumeration<String> getHeaderNames(long req_info_ptr);
@Override
public Collection<String> getHeaders(String name)
{
trace("getHeaders: " + name);
Enumeration<String> e = getHeaders(req_info_ptr, name.getBytes(ISO_8859_1));
if (e == null) {
return Collections.emptyList();
}
return Collections.list(e);
}
private static native Enumeration<String> getHeaders(long req_info_ptr, byte[] name);
@Override
public int getStatus()
{
trace("getStatus");
return getStatus(req_info_ptr);
}
private static native int getStatus(long req_info_ptr);
@Override
public void sendError(int sc) throws IOException
{
sendError(sc, null);
}
@Override
public void sendError(int sc, String msg) throws IOException
{
trace("sendError: " + sc + ", " + msg);
if (isCommitted()) {
throw new IllegalStateException("Response already sent");
}
setStatus(sc);
Request request = getRequest(req_info_ptr);
// If we are allowed to have a body, then produce the error page.
if (sc != SC_NO_CONTENT && sc != SC_NOT_MODIFIED &&
sc != SC_PARTIAL_CONTENT && sc >= SC_OK)
{
request.setAttribute_(RequestDispatcher.ERROR_STATUS_CODE, sc);
request.setAttribute_(RequestDispatcher.ERROR_MESSAGE, msg);
request.setAttribute_(RequestDispatcher.ERROR_REQUEST_URI,
request.getRequestURI());
/*
request.setAttribute_(RequestDispatcher.ERROR_SERVLET_NAME,
request.getServletName());
*/
}
/*
Avoid commit and give chance for error handlers.
if (!request.isAsyncStarted()) {
commit();
}
*/
}
private static native Request getRequest(long req_info_ptr);
private void commit()
{
if (writer != null) {
writer.close();
} else if (outputStream != null) {
outputStream.close();
} else {
commit(req_info_ptr);
}
}
private static native void commit(long req_info_ptr);
@Override
public void sendRedirect(String location) throws IOException
{
trace("sendRedirect: " + location);
if (isCommitted()) {
return;
}
try {
URI uri = new URI(location);
if (!uri.isAbsolute()) {
URI req_uri = new URI(getRequest(req_info_ptr).getRequestURL().toString());
uri = req_uri.resolve(uri);
location = uri.toString();
}
} catch (URISyntaxException e) {
log("sendRedirect: failed to send redirect: " + e);
return;
}
sendRedirect(req_info_ptr, location.getBytes(ISO_8859_1));
}
private static native void sendRedirect(long req_info_ptr, byte[] location);
@Override
public void setDateHeader(String name, long date)
{
trace("setDateHeader: " + name + ": " + date);
if (isCommitted()) {
return;
}
String value = dateToString(date);
setHeader(req_info_ptr, name.getBytes(ISO_8859_1),
value.getBytes(ISO_8859_1));
}
@Override
public void setHeader(String name, String value)
{
trace("setHeader: " + name + ": " + value);
if (isCommitted()) {
return;
}
if (CONTENT_TYPE.equalsIgnoreCase(name)) {
setContentType(value);
return;
}
/*
* When value is null container behaviour is undefined.
* - Tomcat ignores setHeader call;
* - Jetty & Resin acts as removeHeader;
*/
if (value == null) {
removeHeader(req_info_ptr, name.getBytes(ISO_8859_1));
return;
}
setHeader(req_info_ptr, name.getBytes(ISO_8859_1),
value.getBytes(ISO_8859_1));
}
private static native void setHeader(long req_info_ptr, byte[] name, byte[] value);
private static native void removeHeader(long req_info_ptr, byte[] name);
@Override
public void setIntHeader(String name, int value)
{
trace("setIntHeader: " + name + ": " + value);
if (isCommitted()) {
return;
}
setIntHeader(req_info_ptr, name.getBytes(ISO_8859_1), value);
}
private static native void setIntHeader(long req_info_ptr, byte[] name, int value);
@Override
public void setStatus(int sc)
{
trace("setStatus: " + sc);
if (isCommitted()) {
return;
}
setStatus(req_info_ptr, sc);
}
private static native void setStatus(long req_info_ptr, int sc);
@Override
@Deprecated
public void setStatus(int sc, String sm)
{
trace("setStatus: " + sc + "; " + sm);
if (isCommitted()) {
return;
}
setStatus(req_info_ptr, sc);
}
@Override
public void flushBuffer() throws IOException
{
trace("flushBuffer");
if (writer != null) {
writer.flush();
}
if (outputStream != null) {
outputStream.flush();
}
}
@Override
public int getBufferSize()
{
trace("getBufferSize");
return getBufferSize(req_info_ptr);
}
public static native int getBufferSize(long req_info_ptr);
@Override
public String getCharacterEncoding()
{
trace("getCharacterEncoding");
return characterEncoding;
}
@Override
public String getContentType()
{
/* In JIRA decorator get content type called after commit. */
String res = contentTypeHeader;
trace("getContentType: " + res);
return res;
}
private static native String getContentType(long req_info_ptr);
@Override
public Locale getLocale()
{
log("getLocale");
return null;
}
@Override
public ServletOutputStream getOutputStream() throws IOException
{
trace("getOutputStream");
if (writer != null) {
throw new IllegalStateException("Writer already created");
}
if (outputStream == null) {
outputStream = new OutputStream(req_info_ptr);
}
return outputStream;
}
@Override
public PrintWriter getWriter() throws IOException
{
trace("getWriter ( characterEncoding = '" + characterEncoding + "' )");
if (outputStream != null) {
throw new IllegalStateException("OutputStream already created");
}
if (writer == null) {
ServletOutputStream stream = new OutputStream(req_info_ptr);
writer = new PrintWriter(
new OutputStreamWriter(stream, Charset.forName(characterEncoding)),
false);
}
return writer;
}
@Override
public boolean isCommitted()
{
trace("isCommitted");
return isCommitted(req_info_ptr);
}
public static native boolean isCommitted(long req_info_ptr);
@Override
public void reset()
{
trace("reset");
if (isCommitted()) {
return;
}
reset(req_info_ptr);
writer = null;
outputStream = null;
}
public static native void reset(long req_info_ptr);
@Override
public void resetBuffer()
{
trace("resetBuffer");
resetBuffer(req_info_ptr);
writer = null;
outputStream = null;
}
public static native void resetBuffer(long req_info_ptr);
@Override
public void setBufferSize(int size)
{
trace("setBufferSize: " + size);
setBufferSize(req_info_ptr, size);
}
public static native void setBufferSize(long req_info_ptr, int size);
@Override
public void setCharacterEncoding(String charset)
{
trace("setCharacterEncoding " + charset);
if (isCommitted()) {
return;
}
if (charset == null) {
if (writer != null
&& !characterEncoding.equalsIgnoreCase(defaultCharacterEncoding))
{
/* TODO throw */
return;
}
characterEncoding = defaultCharacterEncoding;
} else {
if (writer != null
&& !characterEncoding.equalsIgnoreCase(charset))
{
/* TODO throw */
return;
}
characterEncoding = charset;
}
if (contentType != null) {
String type = contentType + ";charset=" + characterEncoding;
contentTypeHeader = type;
setContentType(req_info_ptr, type.getBytes(ISO_8859_1));
}
}
@Override
public void setContentLength(int len)
{
trace("setContentLength: " + len);
if (isCommitted()) {
return;
}
setContentLength(req_info_ptr, len);
}
@Override
public void setContentLengthLong(long len)
{
trace("setContentLengthLong: " + len);
if (isCommitted()) {
return;
}
setContentLength(req_info_ptr, len);
}
private static native void setContentLength(long req_info_ptr, long len);
@Override
public void setContentType(String type)
{
trace("setContentType: " + type);
if (isCommitted()) {
return;
}
if (type == null) {
removeContentType(req_info_ptr);
contentType = null;
contentTypeHeader = null;
return;
}
String charset = MimeTypes.getCharsetFromContentType(type);
String ctype = MimeTypes.getContentTypeWithoutCharset(type);
if (writer != null
&& charset != null
&& !characterEncoding.equalsIgnoreCase(charset))
{
/* To late to change character encoding */
charset = characterEncoding;
type = ctype + ";charset=" + characterEncoding;
}
if (charset == null) {
type = type + ";charset=" + characterEncoding;
} else {
characterEncoding = charset;
}
contentType = ctype;
contentTypeHeader = type;
setContentType(req_info_ptr, type.getBytes(ISO_8859_1));
}
private static native void setContentType(long req_info_ptr, byte[] type);
private static native void removeContentType(long req_info_ptr);
@Override
public void setLocale(Locale loc)
{
log("setLocale: " + loc);
}
private void log(String msg)
{
msg = "Response." + msg;
log(req_info_ptr, msg.getBytes(UTF_8));
}
public static native void log(long req_info_ptr, byte[] msg);
private void trace(String msg)
{
msg = "Response." + msg;
trace(req_info_ptr, msg.getBytes(UTF_8));
}
public static native void trace(long req_info_ptr, byte[] msg);
}
