com.firenio.baseio.codec.http11.Cookie Maven / Gradle / Ivy
/*
* Copyright 2015 The Baseio Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.firenio.baseio.codec.http11;
public class Cookie implements Cloneable {
private static final String tspecials = ",; ";
private String comment;
private String domain;
private int maxAge = -1;
private String name;
private String path;
private boolean secure;
private String value;
private int version = 0;
public Cookie(String name, String value) {
if (!isToken(name) || name.equalsIgnoreCase("Comment") // rfc2019
|| name.equalsIgnoreCase("Discard") // 2019++
|| name.equalsIgnoreCase("Domain") || name.equalsIgnoreCase("Expires") // (old cookies)
|| name.equalsIgnoreCase("Max-Age") // rfc2019
|| name.equalsIgnoreCase("Path") || name.equalsIgnoreCase("Secure")
|| name.equalsIgnoreCase("Version") || name.startsWith("$")) {
throw new IllegalArgumentException("undefined cookie name " + name);
}
this.name = name;
this.value = value;
}
/**
* Returns the comment describing the purpose of this cookie, or
* null if the cookie has no comment.
*
* @return a String containing the comment, or
* null if none
*
* @see #setComment
*
*/
public String getComment() {
return comment;
}
/**
* Returns the domain name set for this cookie. The form of the domain name
* is set by RFC 2109.
*
* @return a String containing the domain name
*
* @see #setDomain
*
*/
public String getDomain() {
return domain;
}
/**
* Returns the maximum age of the cookie, specified in seconds, By default,
* -1 indicating the cookie will persist until browser
* shutdown.
*
*
* @return an integer specifying the maximum age of the cookie in seconds;
* if negative, means the cookie persists until browser shutdown
*
*
* @see #setMaxAge
*
*/
public int getMaxAge() {
return maxAge;
}
/**
* Returns the name of the cookie. The name cannot be changed after
* creation.
*
* @return a String specifying the cookie's name
*
*/
public String getName() {
return name;
}
/**
* Returns the path on the server to which the browser returns this cookie.
* The cookie is visible to all subpaths on the server.
*
*
* @return a String specifying a path that contains a servlet
* name, for example, /catalog
*
* @see #setPath
*
*/
public String getPath() {
return path;
}
/**
* Returns true if the browser is sending cookies only over a
* secure protocol, or false if the browser can send cookies
* using any protocol.
*
* @return true if the browser uses a secure protocol;
* otherwise, true
*
* @see #setSecure
*
*/
public boolean getSecure() {
return secure;
}
/**
* Returns the value of the cookie.
*
* @return a String containing the cookie's present value
*
* @see #setValue
* @see Cookie
*
*/
public String getValue() {
return value;
}
/**
* Returns the version of the protocol this cookie complies with. Version 1
* complies with RFC 2109, and version 0 complies with the original cookie
* specification drafted by Netscape. Cookies provided by a browser use and
* identify the browser's cookie version.
*
*
* @return 0 if the cookie complies with the original Netscape
* specification; 1 if the cookie complies with RFC 2109
*
* @see #setVersion
*
*/
public int getVersion() {
return version;
}
private boolean isToken(String value) {
int len = value.length();
for (int i = 0; i < len; i++) {
char c = value.charAt(i);
if (c < 0x20 || c >= 0x7f || tspecials.indexOf(c) != -1) {
return false;
}
}
return true;
}
/**
*
* Specifies a comment that describes a cookie's purpose. The comment is
* useful if the browser presents the cookie to the user. Comments are not
* supported by Netscape Version 0 cookies.
*
* @param purpose
* a String specifying the comment to display to
* the user
*
* @see #getComment
*
*/
public void setComment(String purpose) {
comment = purpose;
}
/**
*
* Specifies the domain within which this cookie should be presented.
*
*
* The form of the domain name is specified by RFC 2109. A domain name
* begins with a dot (.foo.com) and means that the cookie is
* visible to servers in a specified Domain Name System (DNS) zone (for
* example, www.foo.com, but not a.b.foo.com). By
* default, cookies are only returned to the server that sent them.
*
*
* @param pattern
* a String containing the domain name within
* which this cookie is visible; form is according to RFC 2109
*
* @see #getDomain
*
*/
public void setDomain(String pattern) {
domain = pattern.toLowerCase(); // IE allegedly needs this
}
/**
* Sets the maximum age of the cookie in seconds.
*
*
* A positive value indicates that the cookie will expire after that many
* seconds have passed. Note that the value is the maximum age when
* the cookie will expire, not the cookie's current age.
*
*
* A negative value means that the cookie is not stored persistently and
* will be deleted when the Web browser exits. A zero value causes the
* cookie to be deleted.
*
* @param expiry
* an integer specifying the maximum age of the cookie in
* seconds; if negative, means the cookie is not stored; if
* zero, deletes the cookie
*
*
* @see #getMaxAge
*
*/
public void setMaxAge(int expiry) {
maxAge = expiry;
}
/**
* Specifies a path for the cookie to which the client should return the
* cookie.
*
*
* The cookie is visible to all the pages in the directory you specify, and
* all the pages in that directory's subdirectories. A cookie's path must
* include the servlet that set the cookie, for example, /catalog,
* which makes the cookie visible to all directories on the server under
* /catalog.
*
*
* Consult RFC 2109 (available on the Internet) for more information on
* setting path names for cookies.
*
*
* @param uri
* a String specifying a path
*
*
* @see #getPath
*
*/
public void setPath(String uri) {
path = uri;
}
/**
* Indicates to the browser whether the cookie should only be sent using a
* secure protocol, such as HTTPS or SSL.
*
*
* The default value is false.
*
* @param flag
* if true, sends the cookie from the browser to
* the server only when using a secure protocol; if
* false, sent on any protocol
*
* @see #getSecure
*
*/
public void setSecure(boolean flag) {
secure = flag;
}
// Note -- disabled for now to allow full Netscape compatibility
// from RFC 2068, token special case characters
//
// private static final String tspecials = "()<>@,;:\\\"/[]?={} \t";
/**
*
* Assigns a new value to a cookie after the cookie is created. If you use
* a binary value, you may want to use BASE64 encoding.
*
*
* With Version 0 cookies, values should not contain white space, brackets,
* parentheses, equals signs, commas, double quotes, slashes, question
* marks, at signs, colons, and semicolons. Empty values may not behave the
* same way on all browsers.
*
* @param newValue
* a String specifying the new value
*
*
* @see #getValue
* @see Cookie
*
*/
public void setValue(String newValue) {
value = newValue;
}
/*
* Tests a string and returns true if the string counts as a reserved token
* in the Java language.
*
* @param value the String to be tested
*
* @return true if the String is a reserved
* token; false if it is not
*/
/**
* Sets the version of the cookie protocol this cookie complies with.
* Version 0 complies with the original Netscape cookie specification.
* Version 1 complies with RFC 2109.
*
*
* Since RFC 2109 is still somewhat new, consider version 1 as
* experimental; do not use it yet on production sites.
*
*
* @param v
* 0 if the cookie should comply with the original Netscape
* specification; 1 if the cookie should comply with RFC 2109
*
* @see #getVersion
*
*/
public void setVersion(int v) {
version = v;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
CookieUtil.appendCookieValue(sb, getVersion(), getName(), getValue(), getPath(),
getDomain(), getComment(), getMaxAge(), getSecure());
return sb.toString();
}
}