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/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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:
*
* https://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.arangodb.shaded.netty.handler.codec.http.cookie;
import static com.arangodb.shaded.netty.handler.codec.http.cookie.CookieUtil.add;
import static com.arangodb.shaded.netty.handler.codec.http.cookie.CookieUtil.addQuoted;
import static com.arangodb.shaded.netty.handler.codec.http.cookie.CookieUtil.stringBuilder;
import static com.arangodb.shaded.netty.handler.codec.http.cookie.CookieUtil.stripTrailingSeparator;
import static com.arangodb.shaded.netty.handler.codec.http.cookie.CookieUtil.stripTrailingSeparatorOrNull;
import static com.arangodb.shaded.netty.util.internal.ObjectUtil.checkNotNull;
import com.arangodb.shaded.netty.handler.codec.http.HttpRequest;
import com.arangodb.shaded.netty.util.internal.InternalThreadLocalMap;
import java.util.Arrays;
import java.util.Collection;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
/**
* A RFC6265 compliant cookie encoder to be used client side, so
* only name=value pairs are sent.
*
* Note that multiple cookies are supposed to be sent at once in a single "Cookie" header.
*
*
*
* @see ClientCookieDecoder
*/
public final class ClientCookieEncoder extends CookieEncoder {
/**
* Strict encoder that validates that name and value chars are in the valid scope and (for methods that accept
* multiple cookies) sorts cookies into order of decreasing path length, as specified in RFC6265.
*/
public static final ClientCookieEncoder STRICT = new ClientCookieEncoder(true);
/**
* Lax instance that doesn't validate name and value, and (for methods that accept multiple cookies) keeps
* cookies in the order in which they were given.
*/
public static final ClientCookieEncoder LAX = new ClientCookieEncoder(false);
private ClientCookieEncoder(boolean strict) {
super(strict);
}
/**
* Encodes the specified cookie into a Cookie header value.
*
* @param name
* the cookie name
* @param value
* the cookie value
* @return a Rfc6265 style Cookie header value
*/
public String encode(String name, String value) {
return encode(new DefaultCookie(name, value));
}
/**
* Encodes the specified cookie into a Cookie header value.
*
* @param cookie the specified cookie
* @return a Rfc6265 style Cookie header value
*/
public String encode(Cookie cookie) {
StringBuilder buf = stringBuilder();
encode(buf, checkNotNull(cookie, "cookie"));
return stripTrailingSeparator(buf);
}
/**
* Sort cookies into decreasing order of path length, breaking ties by sorting into increasing chronological
* order of creation time, as recommended by RFC 6265.
*/
// package-private for testing only.
static final Comparator COOKIE_COMPARATOR = new Comparator() {
@Override
public int compare(Cookie c1, Cookie c2) {
String path1 = c1.path();
String path2 = c2.path();
// Cookies with unspecified path default to the path of the request. We don't
// know the request path here, but we assume that the length of an unspecified
// path is longer than any specified path (i.e. pathless cookies come first),
// because setting cookies with a path longer than the request path is of
// limited use.
int len1 = path1 == null ? Integer.MAX_VALUE : path1.length();
int len2 = path2 == null ? Integer.MAX_VALUE : path2.length();
// Rely on Arrays.sort's stability to retain creation order in cases where
// cookies have same path length.
return len2 - len1;
}
};
/**
* Encodes the specified cookies into a single Cookie header value.
*
* @param cookies
* some cookies
* @return a Rfc6265 style Cookie header value, null if no cookies are passed.
*/
public String encode(Cookie... cookies) {
if (checkNotNull(cookies, "cookies").length == 0) {
return null;
}
StringBuilder buf = stringBuilder();
if (strict) {
if (cookies.length == 1) {
encode(buf, cookies[0]);
} else {
Cookie[] cookiesSorted = Arrays.copyOf(cookies, cookies.length);
Arrays.sort(cookiesSorted, COOKIE_COMPARATOR);
for (Cookie c : cookiesSorted) {
encode(buf, c);
}
}
} else {
for (Cookie c : cookies) {
encode(buf, c);
}
}
return stripTrailingSeparatorOrNull(buf);
}
/**
* Encodes the specified cookies into a single Cookie header value.
*
* @param cookies
* some cookies
* @return a Rfc6265 style Cookie header value, null if no cookies are passed.
*/
public String encode(Collection cookies) {
if (checkNotNull(cookies, "cookies").isEmpty()) {
return null;
}
StringBuilder buf = stringBuilder();
if (strict) {
if (cookies.size() == 1) {
encode(buf, cookies.iterator().next());
} else {
Cookie[] cookiesSorted = cookies.toArray(new Cookie[0]);
Arrays.sort(cookiesSorted, COOKIE_COMPARATOR);
for (Cookie c : cookiesSorted) {
encode(buf, c);
}
}
} else {
for (Cookie c : cookies) {
encode(buf, c);
}
}
return stripTrailingSeparatorOrNull(buf);
}
/**
* Encodes the specified cookies into a single Cookie header value.
*
* @param cookies some cookies
* @return a Rfc6265 style Cookie header value, null if no cookies are passed.
*/
public String encode(Iterable cookies) {
Iterator cookiesIt = checkNotNull(cookies, "cookies").iterator();
if (!cookiesIt.hasNext()) {
return null;
}
StringBuilder buf = stringBuilder();
if (strict) {
Cookie firstCookie = cookiesIt.next();
if (!cookiesIt.hasNext()) {
encode(buf, firstCookie);
} else {
List cookiesList = InternalThreadLocalMap.get().arrayList();
cookiesList.add(firstCookie);
while (cookiesIt.hasNext()) {
cookiesList.add(cookiesIt.next());
}
Cookie[] cookiesSorted = cookiesList.toArray(new Cookie[0]);
Arrays.sort(cookiesSorted, COOKIE_COMPARATOR);
for (Cookie c : cookiesSorted) {
encode(buf, c);
}
}
} else {
while (cookiesIt.hasNext()) {
encode(buf, cookiesIt.next());
}
}
return stripTrailingSeparatorOrNull(buf);
}
private void encode(StringBuilder buf, Cookie c) {
final String name = c.name();
final String value = c.value() != null ? c.value() : "";
validateCookie(name, value);
if (c.wrap()) {
addQuoted(buf, name, value);
} else {
add(buf, name, value);
}
}
}
