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The Adobe Experience Manager SDK
//
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// 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.util.Objects;
import org.eclipse.jetty.util.StringUtil;
/**
* An HTTP Field
*
* @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
*/
@Deprecated(since = "2021-05-27")
public class HttpField {
private static final String ZEROQUALITY = "q=0";
private final HttpHeader _header;
private final String _name;
private final String _value;
// cached hashcode for case insensitive name
private int hash = 0;
public HttpField(HttpHeader header, String name, String value) {
_header = header;
if (_header != null && name == null)
_name = _header.asString();
else
_name = Objects.requireNonNull(name, "name");
_value = value;
}
public HttpField(HttpHeader header, String value) {
this(header, header.asString(), value);
}
public HttpField(HttpHeader header, HttpHeaderValue value) {
this(header, header.asString(), value.asString());
}
public HttpField(String name, String value) {
this(HttpHeader.CACHE.get(name), name, value);
}
public HttpHeader getHeader() {
return _header;
}
public String getName() {
return _name;
}
public String getLowerCaseName() {
return _header != null ? _header.lowerCaseName() : StringUtil.asciiToLowerCase(_name);
}
public String getValue() {
return _value;
}
public int getIntValue() {
return Integer.parseInt(_value);
}
public long getLongValue() {
return Long.parseLong(_value);
}
public String[] getValues() {
if (_value == null)
return null;
QuotedCSV list = new QuotedCSV(false, _value);
return list.getValues().toArray(new String[list.size()]);
}
/**
* Look for a value in a possible multi valued field
*
* @param search Values to search for (case insensitive)
* @return True iff the value is contained in the field value entirely or
* as an element of a quoted comma separated list. List element parameters (eg qualities) are ignored,
* except if they are q=0, in which case the item itself is ignored.
*/
public boolean contains(String search) {
if (search == null)
return _value == null;
if (search.isEmpty())
return false;
if (_value == null)
return false;
if (search.equals(_value))
return true;
search = StringUtil.asciiToLowerCase(search);
int state = 0;
int match = 0;
int param = 0;
for (int i = 0; i < _value.length(); i++) {
char c = _value.charAt(i);
switch(state) {
case // initial white space
0:
switch(c) {
case // open quote
'"':
match = 0;
state = 2;
break;
case // ignore leading empty field
',':
break;
case // ignore leading empty field parameter
';':
param = -1;
match = -1;
state = 5;
break;
// more white space
case ' ':
case '\t':
break;
default:
// character
match = Character.toLowerCase(c) == search.charAt(0) ? 1 : -1;
state = 1;
break;
}
break;
case // In token
1:
switch(c) {
case // next field
',':
// Have we matched the token?
if (match == search.length())
return true;
state = 0;
break;
case ';':
param = match >= 0 ? 0 : -1;
// parameter
state = 5;
break;
default:
if (match > 0) {
if (match < search.length())
match = Character.toLowerCase(c) == search.charAt(match) ? (match + 1) : -1;
else if (c != ' ' && c != '\t')
match = -1;
}
break;
}
break;
case // In Quoted token
2:
switch(c) {
case // quoted character
'\\':
state = 3;
break;
case // end quote
'"':
state = 4;
break;
default:
if (match >= 0) {
if (match < search.length())
match = Character.toLowerCase(c) == search.charAt(match) ? (match + 1) : -1;
else
match = -1;
}
}
break;
case // In Quoted character in quoted token
3:
if (match >= 0) {
if (match < search.length())
match = Character.toLowerCase(c) == search.charAt(match) ? (match + 1) : -1;
else
match = -1;
}
state = 2;
break;
case // WS after end quote
4:
switch(c) {
// white space
case ' ':
case // white space
'\t':
break;
case ';':
// parameter
state = 5;
break;
case // end token
',':
// Have we matched the token?
if (match == search.length())
return true;
state = 0;
break;
default:
// This is an illegal token, just ignore
match = -1;
}
break;
case // parameter
5:
switch(c) {
case // end token
',':
// Have we matched the token and not q=0?
if (param != ZEROQUALITY.length() && match == search.length())
return true;
param = 0;
state = 0;
break;
// white space
case ' ':
case // white space
'\t':
break;
default:
if (param >= 0) {
if (param < ZEROQUALITY.length())
param = Character.toLowerCase(c) == ZEROQUALITY.charAt(param) ? (param + 1) : -1;
else if (c != '0' && c != '.')
param = -1;
}
}
break;
default:
throw new IllegalStateException();
}
}
return param != ZEROQUALITY.length() && match == search.length();
}
@Override
public String toString() {
String v = getValue();
return getName() + ": " + (v == null ? "" : v);
}
public boolean isSameName(HttpField field) {
if (field == null)
return false;
if (field == this)
return true;
if (_header != null && _header == field.getHeader())
return true;
return _name.equalsIgnoreCase(field.getName());
}
public boolean is(String name) {
return _name.equalsIgnoreCase(name);
}
private int nameHashCode() {
int h = this.hash;
int len = _name.length();
if (h == 0 && len > 0) {
for (int i = 0; i < len; i++) {
// simple case insensitive hash
char c = _name.charAt(i);
// assuming us-ascii (per last paragraph on http://tools.ietf.org/html/rfc7230#section-3.2.4)
if ((c >= 'a' && c <= 'z'))
c -= 0x20;
h = 31 * h + c;
}
this.hash = h;
}
return h;
}
@Override
public int hashCode() {
int vhc = Objects.hashCode(_value);
if (_header == null)
return vhc ^ nameHashCode();
return vhc ^ _header.hashCode();
}
@Override
public boolean equals(Object o) {
if (o == this)
return true;
if (!(o instanceof HttpField))
return false;
HttpField field = (HttpField) o;
if (_header != field.getHeader())
return false;
if (!_name.equalsIgnoreCase(field.getName()))
return false;
return Objects.equals(_value, field.getValue());
}
// @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
@Deprecated(since = "2021-05-27")
public static class IntValueHttpField extends HttpField {
private final int _int;
public IntValueHttpField(HttpHeader header, String name, String value, int intValue) {
super(header, name, value);
_int = intValue;
}
public IntValueHttpField(HttpHeader header, String name, String value) {
this(header, name, value, Integer.parseInt(value));
}
public IntValueHttpField(HttpHeader header, String name, int intValue) {
this(header, name, Integer.toString(intValue), intValue);
}
public IntValueHttpField(HttpHeader header, int value) {
this(header, header.asString(), value);
}
@Override
public int getIntValue() {
return _int;
}
@Override
public long getLongValue() {
return _int;
}
}
// @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
@Deprecated(since = "2021-05-27")
public static class LongValueHttpField extends HttpField {
private final long _long;
public LongValueHttpField(HttpHeader header, String name, String value, long longValue) {
super(header, name, value);
_long = longValue;
}
public LongValueHttpField(HttpHeader header, String name, String value) {
this(header, name, value, Long.parseLong(value));
}
public LongValueHttpField(HttpHeader header, String name, long value) {
this(header, name, Long.toString(value), value);
}
public LongValueHttpField(HttpHeader header, long value) {
this(header, header.asString(), value);
}
@Override
public int getIntValue() {
return (int) _long;
}
@Override
public long getLongValue() {
return _long;
}
}
}
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