/* * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.security.ssl;import java.io.*;import java.util.*;import javax.net.ssl.SSLException;/** * A list of CipherSuites. Also maintains the lists of supported and * default ciphersuites and supports I/O from handshake streams. * * Instances of this class are immutable. * */final class CipherSuiteList { private final Collection<CipherSuite> cipherSuites; private String[] suiteNames; // flag indicating whether this list contains any ECC ciphersuites. // null if not yet checked. private volatile Boolean containsEC; // for use by buildAvailableCache() and // Handshaker.getKickstartMessage() only CipherSuiteList(Collection<CipherSuite> cipherSuites) { this.cipherSuites = cipherSuites; } /** * Create a CipherSuiteList with a single element. */ CipherSuiteList(CipherSuite suite) { cipherSuites = new ArrayList<CipherSuite>(1); cipherSuites.add(suite); } /** * Construct a CipherSuiteList from a array of names. We don't bother * to eliminate duplicates. * * @exception IllegalArgumentException if the array or any of its elements * is null or if the ciphersuite name is unrecognized or unsupported * using currently installed providers. */ CipherSuiteList(String[] names) { if (names == null) { throw new IllegalArgumentException("CipherSuites may not be null"); } cipherSuites = new ArrayList<CipherSuite>(names.length); // refresh available cache once if a CipherSuite is not available // (maybe new JCE providers have been installed) boolean refreshed = false; for (int i = 0; i < names.length; i++) { String suiteName = names[i]; CipherSuite suite = CipherSuite.valueOf(suiteName); if (suite.isAvailable() == false) { if (refreshed == false) { // clear the cache so that the isAvailable() call below // does a full check clearAvailableCache(); refreshed = true; } // still missing? if (suite.isAvailable() == false) { throw new IllegalArgumentException("Cannot support " + suiteName + " with currently installed providers"); } } cipherSuites.add(suite); } } /** * Read a CipherSuiteList from a HandshakeInStream in V3 ClientHello * format. Does not check if the listed ciphersuites are known or * supported. */ CipherSuiteList(HandshakeInStream in) throws IOException { byte[] bytes = in.getBytes16(); if ((bytes.length & 1) != 0) { throw new SSLException("Invalid ClientHello message"); } cipherSuites = new ArrayList<CipherSuite>(bytes.length >> 1); for (int i = 0; i < bytes.length; i += 2) { cipherSuites.add(CipherSuite.valueOf(bytes[i], bytes[i+1])); } } /** * Return whether this list contains the given CipherSuite. */ boolean contains(CipherSuite suite) { return cipherSuites.contains(suite); } // Return whether this list contains any ECC ciphersuites boolean containsEC() { if (containsEC == null) { for (CipherSuite c : cipherSuites) { switch (c.keyExchange) { case K_ECDH_ECDSA: case K_ECDH_RSA: case K_ECDHE_ECDSA: case K_ECDHE_RSA: case K_ECDH_ANON: containsEC = true; return true; default: break; } } containsEC = false; } return containsEC; } /** * Return an Iterator for the CipherSuites in this list. */ Iterator<CipherSuite> iterator() { return cipherSuites.iterator(); } /** * Return a reference to the internal Collection of CipherSuites. * The Collection MUST NOT be modified. */ Collection<CipherSuite> collection() { return cipherSuites; } /** * Return the number of CipherSuites in this list. */ int size() { return cipherSuites.size(); } /** * Return an array with the names of the CipherSuites in this list. */ synchronized String[] toStringArray() { if (suiteNames == null) { suiteNames = new String[cipherSuites.size()]; int i = 0; for (CipherSuite c : cipherSuites) { suiteNames[i++] = c.name; } } return suiteNames.clone(); } public String toString() { return cipherSuites.toString(); } /** * Write this list to an HandshakeOutStream in V3 ClientHello format. */ void send(HandshakeOutStream s) throws IOException { byte[] suiteBytes = new byte[cipherSuites.size() * 2]; int i = 0; for (CipherSuite c : cipherSuites) { suiteBytes[i] = (byte)(c.id >> 8); suiteBytes[i+1] = (byte)c.id; i += 2; } s.putBytes16(suiteBytes); } /** * Clear cache of available ciphersuites. If we support all ciphers * internally, there is no need to clear the cache and calling this * method has no effect. */ static synchronized void clearAvailableCache() { if (CipherSuite.DYNAMIC_AVAILABILITY) { CipherSuite.BulkCipher.clearAvailableCache(); JsseJce.clearEcAvailable(); } }}
/*
* Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.security.ssl;
import java.io.*;
import java.util.*;
import javax.net.ssl.SSLException;
/**
* A list of CipherSuites. Also maintains the lists of supported and
* default ciphersuites and supports I/O from handshake streams.
*
* Instances of this class are immutable.
*
*/
final class CipherSuiteList {
private final Collection<CipherSuite> cipherSuites;
private String[] suiteNames;
// flag indicating whether this list contains any ECC ciphersuites.
// null if not yet checked.
private volatile Boolean containsEC;
// for use by buildAvailableCache() and
// Handshaker.getKickstartMessage() only
CipherSuiteList(Collection<CipherSuite> cipherSuites) {
this.cipherSuites = cipherSuites;
}
/**
* Create a CipherSuiteList with a single element.
*/
CipherSuiteList(CipherSuite suite) {
cipherSuites = new ArrayList<CipherSuite>(1);
cipherSuites.add(suite);
}
/**
* Construct a CipherSuiteList from a array of names. We don't bother
* to eliminate duplicates.
*
* @exception IllegalArgumentException if the array or any of its elements
* is null or if the ciphersuite name is unrecognized or unsupported
* using currently installed providers.
*/
CipherSuiteList(String[] names) {
if (names == null) {
throw new IllegalArgumentException("CipherSuites may not be null");
}
cipherSuites = new ArrayList<CipherSuite>(names.length);
// refresh available cache once if a CipherSuite is not available
// (maybe new JCE providers have been installed)
boolean refreshed = false;
for (int i = 0; i < names.length; i++) {
String suiteName = names[i];
CipherSuite suite = CipherSuite.valueOf(suiteName);
if (suite.isAvailable() == false) {
if (refreshed == false) {
// clear the cache so that the isAvailable() call below
// does a full check
clearAvailableCache();
refreshed = true;
}
// still missing?
if (suite.isAvailable() == false) {
throw new IllegalArgumentException("Cannot support "
+ suiteName + " with currently installed providers");
}
}
cipherSuites.add(suite);
}
}
/**
* Read a CipherSuiteList from a HandshakeInStream in V3 ClientHello
* format. Does not check if the listed ciphersuites are known or
* supported.
*/
CipherSuiteList(HandshakeInStream in) throws IOException {
byte[] bytes = in.getBytes16();
if ((bytes.length & 1) != 0) {
throw new SSLException("Invalid ClientHello message");
}
cipherSuites = new ArrayList<CipherSuite>(bytes.length >> 1);
for (int i = 0; i < bytes.length; i += 2) {
cipherSuites.add(CipherSuite.valueOf(bytes[i], bytes[i+1]));
}
}
/**
* Return whether this list contains the given CipherSuite.
*/
boolean contains(CipherSuite suite) {
return cipherSuites.contains(suite);
}
// Return whether this list contains any ECC ciphersuites
boolean containsEC() {
if (containsEC == null) {
for (CipherSuite c : cipherSuites) {
switch (c.keyExchange) {
case K_ECDH_ECDSA:
case K_ECDH_RSA:
case K_ECDHE_ECDSA:
case K_ECDHE_RSA:
case K_ECDH_ANON:
containsEC = true;
return true;
default:
break;
}
}
containsEC = false;
}
return containsEC;
}
/**
* Return an Iterator for the CipherSuites in this list.
*/
Iterator<CipherSuite> iterator() {
return cipherSuites.iterator();
}
/**
* Return a reference to the internal Collection of CipherSuites.
* The Collection MUST NOT be modified.
*/
Collection<CipherSuite> collection() {
return cipherSuites;
}
/**
* Return the number of CipherSuites in this list.
*/
int size() {
return cipherSuites.size();
}
/**
* Return an array with the names of the CipherSuites in this list.
*/
synchronized String[] toStringArray() {
if (suiteNames == null) {
suiteNames = new String[cipherSuites.size()];
int i = 0;
for (CipherSuite c : cipherSuites) {
suiteNames[i++] = c.name;
}
}
return suiteNames.clone();
}
public String toString() {
return cipherSuites.toString();
}
/**
* Write this list to an HandshakeOutStream in V3 ClientHello format.
*/
void send(HandshakeOutStream s) throws IOException {
byte[] suiteBytes = new byte[cipherSuites.size() * 2];
int i = 0;
for (CipherSuite c : cipherSuites) {
suiteBytes[i] = (byte)(c.id >> 8);
suiteBytes[i+1] = (byte)c.id;
i += 2;
}
s.putBytes16(suiteBytes);
}
/**
* Clear cache of available ciphersuites. If we support all ciphers
* internally, there is no need to clear the cache and calling this
* method has no effect.
*/
static synchronized void clearAvailableCache() {
if (CipherSuite.DYNAMIC_AVAILABILITY) {
CipherSuite.BulkCipher.clearAvailableCache();
JsseJce.clearEcAvailable();
}
}
}