| /* ClientHello.java -- SSL ClientHello message. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is a part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at |
| your option) any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 |
| USA |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.net.ssl.provider; |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayOutputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.PrintWriter; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import javax.net.ssl.SSLProtocolException; |
| |
| final class ClientHello implements Handshake.Body |
| { |
| |
| // Fields. |
| // ------------------------------------------------------------------------- |
| |
| private ProtocolVersion version; |
| private Random random; |
| private byte[] sessionId; |
| private List suites; |
| private List comp; |
| private List extensions; |
| |
| // Constructor. |
| // ------------------------------------------------------------------------- |
| |
| ClientHello(ProtocolVersion version, Random random, |
| byte[] sessionId, List suites, List comp) |
| { |
| this(version, random, sessionId, suites, comp, null); |
| } |
| |
| ClientHello(ProtocolVersion version, Random random, |
| byte[] sessionId, List suites, List comp, List extensions) |
| { |
| this.version = version; |
| this.random = random; |
| this.sessionId = sessionId; |
| this.suites = suites; |
| this.comp = comp; |
| this.extensions = extensions; |
| } |
| |
| // Class methods. |
| // ------------------------------------------------------------------------- |
| |
| static ClientHello read(InputStream in) throws IOException |
| { |
| ProtocolVersion vers = ProtocolVersion.read(in); |
| Random rand = Random.read(in); |
| byte[] id = new byte[in.read() & 0xFF]; |
| in.read(id); |
| int len = (in.read() & 0xFF) << 8 | (in.read() & 0xFF); |
| ArrayList suites = new ArrayList(len / 2); |
| for (int i = 0; i < len; i += 2) |
| { |
| suites.add(CipherSuite.read(in).resolve(vers)); |
| } |
| len = in.read() & 0xFF; |
| ArrayList comp = new ArrayList(len); |
| for (int i = 0; i < len; i++) |
| { |
| comp.add(CompressionMethod.read(in)); |
| } |
| |
| List ext = null; |
| // Since parsing MAY need to continue into the extensions fields, or it |
| // may end here, the specified input stream MUST be a ByteArrayInputStream |
| // over all the data this hello contains. Otherwise this will mess up |
| // the data stream. |
| if (in.available() > 0) // then we have extensions. |
| { |
| ext = new LinkedList(); |
| len = (in.read() & 0xFF) << 8 | (in.read() & 0xFF); |
| int count = 0; |
| while (count < len) |
| { |
| Extension e = Extension.read(in); |
| ext.add(e); |
| count += e.getValue().length + 4; |
| } |
| } |
| return new ClientHello(vers, rand, id, suites, comp, ext); |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| public void write(OutputStream out) throws IOException |
| { |
| version.write(out); |
| random.write(out); |
| out.write(sessionId.length); |
| out.write(sessionId); |
| out.write((suites.size() << 1) >>> 8 & 0xFF); |
| out.write((suites.size() << 1) & 0xFF); |
| for (Iterator i = suites.iterator(); i.hasNext(); ) |
| { |
| ((CipherSuite) i.next()).write(out); |
| } |
| out.write(comp.size()); |
| for (Iterator i = comp.iterator(); i.hasNext(); ) |
| { |
| out.write(((CompressionMethod) i.next()).getValue()); |
| } |
| if (extensions != null) |
| { |
| ByteArrayOutputStream out2 = new ByteArrayOutputStream(); |
| for (Iterator i = extensions.iterator(); i.hasNext(); ) |
| { |
| ((Extension) i.next()).write(out2); |
| } |
| out.write(out2.size() >>> 8 & 0xFF); |
| out.write(out2.size() & 0xFF); |
| out2.writeTo(out); |
| } |
| } |
| |
| ProtocolVersion getVersion() |
| { |
| return version; |
| } |
| |
| Random getRandom() |
| { |
| return random; |
| } |
| |
| byte[] getSessionId() |
| { |
| return sessionId; |
| } |
| |
| List getCipherSuites() |
| { |
| return suites; |
| } |
| |
| List getCompressionMethods() |
| { |
| return comp; |
| } |
| |
| List getExtensions() |
| { |
| return extensions; |
| } |
| |
| public String toString() |
| { |
| StringWriter str = new StringWriter(); |
| PrintWriter out = new PrintWriter(str); |
| out.println("struct {"); |
| out.println(" version = " + version + ";"); |
| BufferedReader r = new BufferedReader(new StringReader(random.toString())); |
| String s; |
| try |
| { |
| while ((s = r.readLine()) != null) |
| { |
| out.print(" "); |
| out.println(s); |
| } |
| } |
| catch (IOException ignored) |
| { |
| } |
| out.println(" sessionId = " + Util.toHexString(sessionId, ':') + ";"); |
| out.println(" cipherSuites = {"); |
| for (Iterator i = suites.iterator(); i.hasNext(); ) |
| { |
| out.print(" "); |
| out.println(i.next()); |
| } |
| out.println(" };"); |
| out.print(" compressionMethods = { "); |
| for (Iterator i = comp.iterator(); i.hasNext(); ) |
| { |
| out.print(i.next()); |
| if (i.hasNext()) |
| out.print(", "); |
| } |
| out.println(" };"); |
| if (extensions != null) |
| { |
| out.println(" extensions = {"); |
| for (Iterator i = extensions.iterator(); i.hasNext(); ) |
| { |
| r = new BufferedReader(new StringReader(i.next().toString())); |
| try |
| { |
| while ((s = r.readLine()) != null) |
| { |
| out.print(" "); |
| out.println(s); |
| } |
| } |
| catch (IOException ignored) |
| { |
| } |
| } |
| out.println(" };"); |
| } |
| out.println("} ClientHello;"); |
| return str.toString(); |
| } |
| } |