// ========================================================================
// Copyright (c) 2004-2009 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
package org.eclipse.jetty.http;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.Enumeration;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.StringTokenizer;
import java.util.TimeZone;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.eclipse.jetty.io.Buffer;
import org.eclipse.jetty.io.BufferCache;
import org.eclipse.jetty.io.BufferCache.CachedBuffer;
import org.eclipse.jetty.io.BufferDateCache;
import org.eclipse.jetty.io.BufferUtil;
import org.eclipse.jetty.io.ByteArrayBuffer;
import org.eclipse.jetty.util.LazyList;
import org.eclipse.jetty.util.QuotedStringTokenizer;
import org.eclipse.jetty.util.StringMap;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/* ------------------------------------------------------------ */
/**
* HTTP Fields. A collection of HTTP header and or Trailer fields.
*
* <p>This class is not synchronized as it is expected that modifications will only be performed by a
* single thread.
*
*
*/
public class HttpFields
{
private static final Logger LOG = Log.getLogger(HttpFields.class);
/* ------------------------------------------------------------ */
public static final String __COOKIE_DELIM="\"\\\n\r\t\f\b%+ ;=";
public static final TimeZone __GMT = TimeZone.getTimeZone("GMT");
public static final BufferDateCache __dateCache = new BufferDateCache("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US);
/* -------------------------------------------------------------- */
static
{
__GMT.setID("GMT");
__dateCache.setTimeZone(__GMT);
}
/* ------------------------------------------------------------ */
public final static String __separators = ", \t";
/* ------------------------------------------------------------ */
private static final String[] DAYS =
{ "Sat", "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
private static final String[] MONTHS =
{ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", "Jan"};
/* ------------------------------------------------------------ */
private static class DateGenerator
{
private final StringBuilder buf = new StringBuilder(32);
private final GregorianCalendar gc = new GregorianCalendar(__GMT);
/**
* Format HTTP date "EEE, dd MMM yyyy HH:mm:ss 'GMT'"
*/
public String formatDate(long date)
{
buf.setLength(0);
gc.setTimeInMillis(date);
int day_of_week = gc.get(Calendar.DAY_OF_WEEK);
int day_of_month = gc.get(Calendar.DAY_OF_MONTH);
int month = gc.get(Calendar.MONTH);
int year = gc.get(Calendar.YEAR);
int century = year / 100;
year = year % 100;
int hours = gc.get(Calendar.HOUR_OF_DAY);
int minutes = gc.get(Calendar.MINUTE);
int seconds = gc.get(Calendar.SECOND);
buf.append(DAYS[day_of_week]);
buf.append(',');
buf.append(' ');
StringUtil.append2digits(buf, day_of_month);
buf.append(' ');
buf.append(MONTHS[month]);
buf.append(' ');
StringUtil.append2digits(buf, century);
StringUtil.append2digits(buf, year);
buf.append(' ');
StringUtil.append2digits(buf, hours);
buf.append(':');
StringUtil.append2digits(buf, minutes);
buf.append(':');
StringUtil.append2digits(buf, seconds);
buf.append(" GMT");
return buf.toString();
}
/* ------------------------------------------------------------ */
/**
* Format "EEE, dd-MMM-yy HH:mm:ss 'GMT'" for cookies
*/
public void formatCookieDate(StringBuilder buf, long date)
{
gc.setTimeInMillis(date);
int day_of_week = gc.get(Calendar.DAY_OF_WEEK);
int day_of_month = gc.get(Calendar.DAY_OF_MONTH);
int month = gc.get(Calendar.MONTH);
int year = gc.get(Calendar.YEAR);
year = year % 10000;
int epoch = (int) ((date / 1000) % (60 * 60 * 24));
int seconds = epoch % 60;
epoch = epoch / 60;
int minutes = epoch % 60;
int hours = epoch / 60;
buf.append(DAYS[day_of_week]);
buf.append(',');
buf.append(' ');
StringUtil.append2digits(buf, day_of_month);
buf.append('-');
buf.append(MONTHS[month]);
buf.append('-');
StringUtil.append2digits(buf, year/100);
StringUtil.append2digits(buf, year%100);
buf.append(' ');
StringUtil.append2digits(buf, hours);
buf.append(':');
StringUtil.append2digits(buf, minutes);
buf.append(':');
StringUtil.append2digits(buf, seconds);
buf.append(" GMT");
}
}
/* ------------------------------------------------------------ */
private static final ThreadLocal<DateGenerator> __dateGenerator =new ThreadLocal<DateGenerator>()
{
@Override
protected DateGenerator initialValue()
{
return new DateGenerator();
}
};
/* ------------------------------------------------------------ */
/**
* Format HTTP date "EEE, dd MMM yyyy HH:mm:ss 'GMT'"
*/
public static String formatDate(long date)
{
return __dateGenerator.get().formatDate(date);
}
/* ------------------------------------------------------------ */
/**
* Format "EEE, dd-MMM-yyyy HH:mm:ss 'GMT'" for cookies
*/
public static void formatCookieDate(StringBuilder buf, long date)
{
__dateGenerator.get().formatCookieDate(buf,date);
}
/* ------------------------------------------------------------ */
/**
* Format "EEE, dd-MMM-yyyy HH:mm:ss 'GMT'" for cookies
*/
public static String formatCookieDate(long date)
{
StringBuilder buf = new StringBuilder(28);
formatCookieDate(buf, date);
return buf.toString();
}
/* ------------------------------------------------------------ */
private final static String __dateReceiveFmt[] =
{
"EEE, dd MMM yyyy HH:mm:ss zzz",
"EEE, dd-MMM-yy HH:mm:ss",
"EEE MMM dd HH:mm:ss yyyy",
"EEE, dd MMM yyyy HH:mm:ss", "EEE dd MMM yyyy HH:mm:ss zzz",
"EEE dd MMM yyyy HH:mm:ss", "EEE MMM dd yyyy HH:mm:ss zzz", "EEE MMM dd yyyy HH:mm:ss",
"EEE MMM-dd-yyyy HH:mm:ss zzz", "EEE MMM-dd-yyyy HH:mm:ss", "dd MMM yyyy HH:mm:ss zzz",
"dd MMM yyyy HH:mm:ss", "dd-MMM-yy HH:mm:ss zzz", "dd-MMM-yy HH:mm:ss", "MMM dd HH:mm:ss yyyy zzz",
"MMM dd HH:mm:ss yyyy", "EEE MMM dd HH:mm:ss yyyy zzz",
"EEE, MMM dd HH:mm:ss yyyy zzz", "EEE, MMM dd HH:mm:ss yyyy", "EEE, dd-MMM-yy HH:mm:ss zzz",
"EEE dd-MMM-yy HH:mm:ss zzz", "EEE dd-MMM-yy HH:mm:ss",
};
/* ------------------------------------------------------------ */
private static class DateParser
{
final SimpleDateFormat _dateReceive[]= new SimpleDateFormat[__dateReceiveFmt.length];
long parse(final String dateVal)
{
for (int i = 0; i < _dateReceive.length; i++)
{
if (_dateReceive[i] == null)
{
_dateReceive[i] = new SimpleDateFormat(__dateReceiveFmt[i], Locale.US);
_dateReceive[i].setTimeZone(__GMT);
}
try
{
Date date = (Date) _dateReceive[i].parseObject(dateVal);
return date.getTime();
}
catch (java.lang.Exception e)
{
// LOG.ignore(e);
}
}
if (dateVal.endsWith(" GMT"))
{
final String val = dateVal.substring(0, dateVal.length() - 4);
for (int i = 0; i < _dateReceive.length; i++)
{
try
{
Date date = (Date) _dateReceive[i].parseObject(val);
return date.getTime();
}
catch (java.lang.Exception e)
{
// LOG.ignore(e);
}
}
}
return -1;
}
}
/* ------------------------------------------------------------ */
public static long parseDate(String date)
{
return __dateParser.get().parse(date);
}
/* ------------------------------------------------------------ */
private static final ThreadLocal<DateParser> __dateParser =new ThreadLocal<DateParser>()
{
@Override
protected DateParser initialValue()
{
return new DateParser();
}
};
/* -------------------------------------------------------------- */
public final static String __01Jan1970=formatDate(0);
public final static Buffer __01Jan1970_BUFFER=new ByteArrayBuffer(__01Jan1970);
public final static String __01Jan1970_COOKIE = formatCookieDate(0).trim();
/* -------------------------------------------------------------- */
private final ArrayList<Field> _fields = new ArrayList<Field>(20);
private final HashMap<Buffer,Field> _names = new HashMap<Buffer,Field>(32);
/* ------------------------------------------------------------ */
/**
* Constructor.
*/
public HttpFields()
{
}
// TODO externalize this cache so it can be configurable
private static ConcurrentMap<String, Buffer> __cache = new ConcurrentHashMap<String, Buffer>();
private static int __cacheSize = Integer.getInteger("org.eclipse.jetty.http.HttpFields.CACHE",2000);
/* -------------------------------------------------------------- */
private Buffer convertValue(String value)
{
Buffer buffer = __cache.get(value);
if (buffer!=null)
return buffer;
try
{
buffer = new ByteArrayBuffer(value,StringUtil.__ISO_8859_1);
if (__cacheSize>0)
{
if (__cache.size()>__cacheSize)
__cache.clear();
Buffer b=__cache.putIfAbsent(value,buffer);
if (b!=null)
buffer=b;
}
return buffer;
}
catch (UnsupportedEncodingException e)
{
throw new RuntimeException(e);
}
}
/* -------------------------------------------------------------- */
/**
* Get enumeration of header _names. Returns an enumeration of strings representing the header
* _names for this request.
*/
public Enumeration<String> getFieldNames()
{
final Enumeration<?> buffers = Collections.enumeration(_names.keySet());
return new Enumeration<String>()
{
public String nextElement()
{
return buffers.nextElement().toString();
}
public boolean hasMoreElements()
{
return buffers.hasMoreElements();
}
};
}
/* ------------------------------------------------------------ */
public int size()
{
return _fields.size();
}
/* ------------------------------------------------------------ */
/**
* Get a Field by index.
* @return A Field value or null if the Field value has not been set
* for this revision of the fields.
*/
public Field getField(int i)
{
return _fields.get(i);
}
/* ------------------------------------------------------------ */
private Field getField(String name)
{
return _names.get(HttpHeaders.CACHE.lookup(name));
}
/* ------------------------------------------------------------ */
private Field getField(Buffer name)
{
return _names.get(HttpHeaders.CACHE.lookup(name));
}
/* ------------------------------------------------------------ */
public boolean containsKey(Buffer name)
{
return _names.containsKey(HttpHeaders.CACHE.lookup(name));
}
/* ------------------------------------------------------------ */
public boolean containsKey(String name)
{
return _names.containsKey(HttpHeaders.CACHE.lookup(name));
}
/* -------------------------------------------------------------- */
/**
* @return the value of a field, or null if not found. For multiple fields of the same name,
* only the first is returned.
* @param name the case-insensitive field name
*/
public String getStringField(String name)
{
Field field = getField(name);
return field==null?null:field.getValue();
}
/* -------------------------------------------------------------- */
/**
* @return the value of a field, or null if not found. For multiple fields of the same name,
* only the first is returned.
* @param name the case-insensitive field name
*/
public String getStringField(Buffer name)
{
Field field = getField(name);
return field==null?null:field.getValue();
}
/* -------------------------------------------------------------- */
/**
* @return the value of a field, or null if not found. For multiple fields of the same name,
* only the first is returned.
* @param name the case-insensitive field name
*/
public Buffer get(Buffer name)
{
Field field = getField(name);
return field==null?null:field._value;
}
/* -------------------------------------------------------------- */
/**
* Get multi headers
*
* @return Enumeration of the values
* @param name the case-insensitive field name
*/
public Enumeration<String> getValues(String name)
{
final Field field = getField(name);
if (field == null)
{
List<String> empty=Collections.emptyList();
return Collections.enumeration(empty);
}
return new Enumeration<String>()
{
Field f = field;
public boolean hasMoreElements()
{
return f != null;
}
public String nextElement() throws NoSuchElementException
{
if (f == null) throw new NoSuchElementException();
Field n = f;
f = f._next;
return n.getValue();
}
};
}
/* -------------------------------------------------------------- */
/**
* Get multi headers
*
* @return Enumeration of the value Strings
* @param name the case-insensitive field name
*/
public Enumeration<String> getValues(Buffer name)
{
final Field field = getField(name);
if (field == null)
{
List<String> empty=Collections.emptyList();
return Collections.enumeration(empty);
}
return new Enumeration<String>()
{
Field f = field;
public boolean hasMoreElements()
{
return f != null;
}
public String nextElement() throws NoSuchElementException
{
if (f == null) throw new NoSuchElementException();
Field n = f;
f = f._next;
return n.getValue();
}
};
}
/* -------------------------------------------------------------- */
/**
* Get multi field values with separator. The multiple values can be represented as separate
* headers of the same name, or by a single header using the separator(s), or a combination of
* both. Separators may be quoted.
*
* @param name the case-insensitive field name
* @param separators String of separators.
* @return Enumeration of the values, or null if no such header.
*/
public Enumeration<String> getValues(String name, final String separators)
{
final Enumeration<String> e = getValues(name);
if (e == null)
return null;
return new Enumeration<String>()
{
QuotedStringTokenizer tok = null;
public boolean hasMoreElements()
{
if (tok != null && tok.hasMoreElements()) return true;
while (e.hasMoreElements())
{
String value = e.nextElement();
tok = new QuotedStringTokenizer(value, separators, false, false);
if (tok.hasMoreElements()) return true;
}
tok = null;
return false;
}
public String nextElement() throws NoSuchElementException
{
if (!hasMoreElements()) throw new NoSuchElementException();
String next = (String) tok.nextElement();
if (next != null) next = next.trim();
return next;
}
};
}
/* -------------------------------------------------------------- */
/**
* Set a field.
*
* @param name the name of the field
* @param value the value of the field. If null the field is cleared.
*/
public void put(String name, String value)
{
if (value==null)
remove(name);
else
{
Buffer n = HttpHeaders.CACHE.lookup(name);
Buffer v = convertValue(value);
put(n, v);
}
}
/* -------------------------------------------------------------- */
/**
* Set a field.
*
* @param name the name of the field
* @param value the value of the field. If null the field is cleared.
*/
public void put(Buffer name, String value)
{
Buffer n = HttpHeaders.CACHE.lookup(name);
Buffer v = convertValue(value);
put(n, v);
}
/* -------------------------------------------------------------- */
/**
* Set a field.
*
* @param name the name of the field
* @param value the value of the field. If null the field is cleared.
*/
public void put(Buffer name, Buffer value)
{
remove(name);
if (value == null)
return;
if (!(name instanceof BufferCache.CachedBuffer))
name = HttpHeaders.CACHE.lookup(name);
if (!(value instanceof CachedBuffer))
value= HttpHeaderValues.CACHE.lookup(value).asImmutableBuffer();
// new value;
Field field = new Field(name, value);
_fields.add(field);
_names.put(name, field);
}
/* -------------------------------------------------------------- */
/**
* Set a field.
*
* @param name the name of the field
* @param list the List value of the field. If null the field is cleared.
*/
public void put(String name, List<?> list)
{
if (list == null || list.size() == 0)
{
remove(name);
return;
}
Buffer n = HttpHeaders.CACHE.lookup(name);
Object v = list.get(0);
if (v != null)
put(n, HttpHeaderValues.CACHE.lookup(v.toString()));
else
remove(n);
if (list.size() > 1)
{
java.util.Iterator<?> iter = list.iterator();
iter.next();
while (iter.hasNext())
{
v = iter.next();
if (v != null) put(n, HttpHeaderValues.CACHE.lookup(v.toString()));
}
}
}
/* -------------------------------------------------------------- */
/**
* Add to or set a field. If the field is allowed to have multiple values, add will add multiple
* headers of the same name.
*
* @param name the name of the field
* @param value the value of the field.
* @exception IllegalArgumentException If the name is a single valued field and already has a
* value.
*/
public void add(String name, String value) throws IllegalArgumentException
{
if (value==null)
return;
Buffer n = HttpHeaders.CACHE.lookup(name);
Buffer v = convertValue(value);
add(n, v);
}
/* -------------------------------------------------------------- */
/**
* Add to or set a field. If the field is allowed to have multiple values, add will add multiple
* headers of the same name.
*
* @param name the name of the field
* @param value the value of the field.
* @exception IllegalArgumentException If the name is a single valued field and already has a
* value.
*/
public void add(Buffer name, Buffer value) throws IllegalArgumentException
{
if (value == null) throw new IllegalArgumentException("null value");
if (!(name instanceof CachedBuffer))
name = HttpHeaders.CACHE.lookup(name);
name=name.asImmutableBuffer();
if (!(value instanceof CachedBuffer) && HttpHeaderValues.hasKnownValues(HttpHeaders.CACHE.getOrdinal(name)))
value= HttpHeaderValues.CACHE.lookup(value);
value=value.asImmutableBuffer();
Field field = _names.get(name);
Field last = null;
while (field != null)
{
last = field;
field = field._next;
}
// create the field
field = new Field(name, value);
_fields.add(field);
// look for chain to add too
if (last != null)
last._next = field;
else
_names.put(name, field);
}
/* ------------------------------------------------------------ */
/**
* Remove a field.
*
* @param name
*/
public void remove(String name)
{
remove(HttpHeaders.CACHE.lookup(name));
}
/* ------------------------------------------------------------ */
/**
* Remove a field.
*
* @param name
*/
public void remove(Buffer name)
{
if (!(name instanceof BufferCache.CachedBuffer))
name = HttpHeaders.CACHE.lookup(name);
Field field = _names.remove(name);
while (field != null)
{
_fields.remove(field);
field = field._next;
}
}
/* -------------------------------------------------------------- */
/**
* Get a header as an long value. Returns the value of an integer field or -1 if not found. The
* case of the field name is ignored.
*
* @param name the case-insensitive field name
* @exception NumberFormatException If bad long found
*/
public long getLongField(String name) throws NumberFormatException
{
Field field = getField(name);
return field==null?-1L:field.getLongValue();
}
/* -------------------------------------------------------------- */
/**
* Get a header as an long value. Returns the value of an integer field or -1 if not found. The
* case of the field name is ignored.
*
* @param name the case-insensitive field name
* @exception NumberFormatException If bad long found
*/
public long getLongField(Buffer name) throws NumberFormatException
{
Field field = getField(name);
return field==null?-1L:field.getLongValue();
}
/* -------------------------------------------------------------- */
/**
* Get a header as a date value. Returns the value of a date field, or -1 if not found. The case
* of the field name is ignored.
*
* @param name the case-insensitive field name
*/
public long getDateField(String name)
{
Field field = getField(name);
if (field == null)
return -1;
String val = valueParameters(BufferUtil.to8859_1_String(field._value), null);
if (val == null)
return -1;
final long date = __dateParser.get().parse(val);
if (date==-1)
throw new IllegalArgumentException("Cannot convert date: " + val);
return date;
}
/* -------------------------------------------------------------- */
/**
* Sets the value of an long field.
*
* @param name the field name
* @param value the field long value
*/
public void putLongField(Buffer name, long value)
{
Buffer v = BufferUtil.toBuffer(value);
put(name, v);
}
/* -------------------------------------------------------------- */
/**
* Sets the value of an long field.
*
* @param name the field name
* @param value the field long value
*/
public void putLongField(String name, long value)
{
Buffer n = HttpHeaders.CACHE.lookup(name);
Buffer v = BufferUtil.toBuffer(value);
put(n, v);
}
/* -------------------------------------------------------------- */
/**
* Sets the value of an long field.
*
* @param name the field name
* @param value the field long value
*/
public void addLongField(String name, long value)
{
Buffer n = HttpHeaders.CACHE.lookup(name);
Buffer v = BufferUtil.toBuffer(value);
add(n, v);
}
/* -------------------------------------------------------------- */
/**
* Sets the value of an long field.
*
* @param name the field name
* @param value the field long value
*/
public void addLongField(Buffer name, long value)
{
Buffer v = BufferUtil.toBuffer(value);
add(name, v);
}
/* -------------------------------------------------------------- */
/**
* Sets the value of a date field.
*
* @param name the field name
* @param date the field date value
*/
public void putDateField(Buffer name, long date)
{
String d=formatDate(date);
Buffer v = new ByteArrayBuffer(d);
put(name, v);
}
/* -------------------------------------------------------------- */
/**
* Sets the value of a date field.
*
* @param name the field name
* @param date the field date value
*/
public void putDateField(String name, long date)
{
Buffer n = HttpHeaders.CACHE.lookup(name);
putDateField(n,date);
}
/* -------------------------------------------------------------- */
/**
* Sets the value of a date field.
*
* @param name the field name
* @param date the field date value
*/
public void addDateField(String name, long date)
{
String d=formatDate(date);
Buffer n = HttpHeaders.CACHE.lookup(name);
Buffer v = new ByteArrayBuffer(d);
add(n, v);
}
/* ------------------------------------------------------------ */
/**
* Format a set cookie value
*
* @param cookie The cookie.
*/
public void addSetCookie(HttpCookie cookie)
{
addSetCookie(
cookie.getName(),
cookie.getValue(),
cookie.getDomain(),
cookie.getPath(),
cookie.getMaxAge(),
cookie.getComment(),
cookie.isSecure(),
cookie.isHttpOnly(),
cookie.getVersion());
}
/**
* Format a set cookie value
*
* @param name the name
* @param value the value
* @param domain the domain
* @param path the path
* @param maxAge the maximum age
* @param comment the comment (only present on versions > 0)
* @param isSecure true if secure cookie
* @param isHttpOnly true if for http only
* @param version version of cookie logic to use (0 == default behavior)
*/
public void addSetCookie(
final String name,
final String value,
final String domain,
final String path,
final long maxAge,
final String comment,
final boolean isSecure,
final boolean isHttpOnly,
int version)
{
String delim=__COOKIE_DELIM;
// Check arguments
if (name == null || name.length() == 0)
throw new IllegalArgumentException("Bad cookie name");
// Format value and params
StringBuilder buf = new StringBuilder(128);
String name_value_params;
QuotedStringTokenizer.quoteIfNeeded(buf, name, delim);
buf.append('=');
String start=buf.toString();
if (value != null && value.length() > 0)
QuotedStringTokenizer.quoteIfNeeded(buf, value, delim);
if (comment != null && comment.length() > 0)
{
buf.append(";Comment=");
QuotedStringTokenizer.quoteIfNeeded(buf, comment, delim);
}
if (path != null && path.length() > 0)
{
buf.append(";Path=");
if (path.trim().startsWith("\""))
buf.append(path);
else
QuotedStringTokenizer.quoteIfNeeded(buf,path,delim);
}
if (domain != null && domain.length() > 0)
{
buf.append(";Domain=");
QuotedStringTokenizer.quoteIfNeeded(buf,domain.toLowerCase(),delim);
}
if (maxAge >= 0)
{
// Always add the expires param as some browsers still don't handle max-age
buf.append(";Expires=");
if (maxAge == 0)
buf.append(__01Jan1970_COOKIE);
else
formatCookieDate(buf, System.currentTimeMillis() + 1000L * maxAge);
if (version >0)
{
buf.append(";Max-Age=");
buf.append(maxAge);
}
}
if (isSecure)
buf.append(";Secure");
if (isHttpOnly)
buf.append(";HttpOnly");
name_value_params = buf.toString();
// remove existing set-cookie of same name
Field field = getField(HttpHeaders.SET_COOKIE);
Field last=null;
while (field!=null)
{
if (field._value!=null && field._value.toString().startsWith(start))
{
_fields.remove(field);
if (last==null)
_names.put(HttpHeaders.SET_COOKIE_BUFFER,field._next);
else
last._next=field._next;
break;
}
last=field;
field=field._next;
}
add(HttpHeaders.SET_COOKIE_BUFFER, new ByteArrayBuffer(name_value_params));
// Expire responses with set-cookie headers so they do not get cached.
put(HttpHeaders.EXPIRES_BUFFER, __01Jan1970_BUFFER);
}
/* -------------------------------------------------------------- */
public void putTo(Buffer buffer) throws IOException
{
for (int i = 0; i < _fields.size(); i++)
{
Field field = _fields.get(i);
if (field != null)
field.putTo(buffer);
}
BufferUtil.putCRLF(buffer);
}
/* -------------------------------------------------------------- */
public String toString()
{
try
{
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < _fields.size(); i++)
{
Field field = (Field) _fields.get(i);
if (field != null)
{
String tmp = field.getName();
if (tmp != null) buffer.append(tmp);
buffer.append(": ");
tmp = field.getValue();
if (tmp != null) buffer.append(tmp);
buffer.append("\r\n");
}
}
buffer.append("\r\n");
return buffer.toString();
}
catch (Exception e)
{
LOG.warn(e);
return e.toString();
}
}
/* ------------------------------------------------------------ */
/**
* Clear the header.
*/
public void clear()
{
_fields.clear();
_names.clear();
}
/* ------------------------------------------------------------ */
/**
* Add fields from another HttpFields instance. Single valued fields are replaced, while all
* others are added.
*
* @param fields
*/
public void add(HttpFields fields)
{
if (fields == null) return;
Enumeration e = fields.getFieldNames();
while (e.hasMoreElements())
{
String name = (String) e.nextElement();
Enumeration values = fields.getValues(name);
while (values.hasMoreElements())
add(name, (String) values.nextElement());
}
}
/* ------------------------------------------------------------ */
/**
* Get field value parameters. Some field values can have parameters. This method separates the
* value from the parameters and optionally populates a map with the parameters. For example:
*
* <PRE>
*
* FieldName : Value ; param1=val1 ; param2=val2
*
* </PRE>
*
* @param value The Field value, possibly with parameteres.
* @param parameters A map to populate with the parameters, or null
* @return The value.
*/
public static String valueParameters(String value, Map<String,String> parameters)
{
if (value == null) return null;
int i = value.indexOf(';');
if (i < 0) return value;
if (parameters == null) return value.substring(0, i).trim();
StringTokenizer tok1 = new QuotedStringTokenizer(value.substring(i), ";", false, true);
while (tok1.hasMoreTokens())
{
String token = tok1.nextToken();
StringTokenizer tok2 = new QuotedStringTokenizer(token, "= ");
if (tok2.hasMoreTokens())
{
String paramName = tok2.nextToken();
String paramVal = null;
if (tok2.hasMoreTokens()) paramVal = tok2.nextToken();
parameters.put(paramName, paramVal);
}
}
return value.substring(0, i).trim();
}
/* ------------------------------------------------------------ */
private static final Float __one = new Float("1.0");
private static final Float __zero = new Float("0.0");
private static final StringMap __qualities = new StringMap();
static
{
__qualities.put(null, __one);
__qualities.put("1.0", __one);
__qualities.put("1", __one);
__qualities.put("0.9", new Float("0.9"));
__qualities.put("0.8", new Float("0.8"));
__qualities.put("0.7", new Float("0.7"));
__qualities.put("0.66", new Float("0.66"));
__qualities.put("0.6", new Float("0.6"));
__qualities.put("0.5", new Float("0.5"));
__qualities.put("0.4", new Float("0.4"));
__qualities.put("0.33", new Float("0.33"));
__qualities.put("0.3", new Float("0.3"));
__qualities.put("0.2", new Float("0.2"));
__qualities.put("0.1", new Float("0.1"));
__qualities.put("0", __zero);
__qualities.put("0.0", __zero);
}
/* ------------------------------------------------------------ */
public static Float getQuality(String value)
{
if (value == null) return __zero;
int qe = value.indexOf(";");
if (qe++ < 0 || qe == value.length()) return __one;
if (value.charAt(qe++) == 'q')
{
qe++;
Map.Entry entry = __qualities.getEntry(value, qe, value.length() - qe);
if (entry != null) return (Float) entry.getValue();
}
HashMap params = new HashMap(3);
valueParameters(value, params);
String qs = (String) params.get("q");
Float q = (Float) __qualities.get(qs);
if (q == null)
{
try
{
q = new Float(qs);
}
catch (Exception e)
{
q = __one;
}
}
return q;
}
/* ------------------------------------------------------------ */
/**
* List values in quality order.
*
* @param e Enumeration of values with quality parameters
* @return values in quality order.
*/
public static List qualityList(Enumeration e)
{
if (e == null || !e.hasMoreElements()) return Collections.EMPTY_LIST;
Object list = null;
Object qual = null;
// Assume list will be well ordered and just add nonzero
while (e.hasMoreElements())
{
String v = e.nextElement().toString();
Float q = getQuality(v);
if (q.floatValue() >= 0.001)
{
list = LazyList.add(list, v);
qual = LazyList.add(qual, q);
}
}
List vl = LazyList.getList(list, false);
if (vl.size() < 2) return vl;
List ql = LazyList.getList(qual, false);
// sort list with swaps
Float last = __zero;
for (int i = vl.size(); i-- > 0;)
{
Float q = (Float) ql.get(i);
if (last.compareTo(q) > 0)
{
Object tmp = vl.get(i);
vl.set(i, vl.get(i + 1));
vl.set(i + 1, tmp);
ql.set(i, ql.get(i + 1));
ql.set(i + 1, q);
last = __zero;
i = vl.size();
continue;
}
last = q;
}
ql.clear();
return vl;
}
/* ------------------------------------------------------------ */
/* ------------------------------------------------------------ */
/* ------------------------------------------------------------ */
public static final class Field
{
private Buffer _name;
private Buffer _value;
private Field _next;
/* ------------------------------------------------------------ */
private Field(Buffer name, Buffer value)
{
_name = name;
_value = value;
_next = null;
}
/* ------------------------------------------------------------ */
public void putTo(Buffer buffer) throws IOException
{
int o=(_name instanceof CachedBuffer)?((CachedBuffer)_name).getOrdinal():-1;
if (o>=0)
buffer.put(_name);
else
{
int s=_name.getIndex();
int e=_name.putIndex();
while (s<e)
{
byte b=_name.peek(s++);
switch(b)
{
case '\r':
case '\n':
case ':' :
continue;
default:
buffer.put(b);
}
}
}
buffer.put((byte) ':');
buffer.put((byte) ' ');
o=(_value instanceof CachedBuffer)?((CachedBuffer)_value).getOrdinal():-1;
if (o>=0)
buffer.put(_value);
else
{
int s=_value.getIndex();
int e=_value.putIndex();
while (s<e)
{
byte b=_value.peek(s++);
switch(b)
{
case '\r':
case '\n':
continue;
default:
buffer.put(b);
}
}
}
BufferUtil.putCRLF(buffer);
}
/* ------------------------------------------------------------ */
public String getName()
{
return BufferUtil.to8859_1_String(_name);
}
/* ------------------------------------------------------------ */
Buffer getNameBuffer()
{
return _name;
}
/* ------------------------------------------------------------ */
public int getNameOrdinal()
{
return HttpHeaders.CACHE.getOrdinal(_name);
}
/* ------------------------------------------------------------ */
public String getValue()
{
return BufferUtil.to8859_1_String(_value);
}
/* ------------------------------------------------------------ */
public Buffer getValueBuffer()
{
return _value;
}
/* ------------------------------------------------------------ */
public int getValueOrdinal()
{
return HttpHeaderValues.CACHE.getOrdinal(_value);
}
/* ------------------------------------------------------------ */
public int getIntValue()
{
return (int) getLongValue();
}
/* ------------------------------------------------------------ */
public long getLongValue()
{
return BufferUtil.toLong(_value);
}
/* ------------------------------------------------------------ */
public String toString()
{
return ("[" + getName() + "=" + _value + (_next == null ? "" : "->") + "]");
}
}
}