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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/net/ssl/provider/Handshake.java | |
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Diffstat (limited to 'libjava/classpath/gnu/javax/net/ssl/provider/Handshake.java')
-rw-r--r-- | libjava/classpath/gnu/javax/net/ssl/provider/Handshake.java | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/net/ssl/provider/Handshake.java b/libjava/classpath/gnu/javax/net/ssl/provider/Handshake.java new file mode 100644 index 000000000..31f142d3e --- /dev/null +++ b/libjava/classpath/gnu/javax/net/ssl/provider/Handshake.java @@ -0,0 +1,299 @@ +/* Handshake.java -- SSL Handshake 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.PrintWriter; +import java.io.StringWriter; + +import java.nio.ByteBuffer; + +/** + * An SSL handshake message. SSL handshake messages have the following + * form: + * + * <pre> +struct +{ + HandshakeType msg_type; + uint24 length; + select (msg_type) + { + case hello_request: HelloRequest; + case client_hello: ClientHello; + case server_hello: ServerHello; + case certificate: Certificate; + case server_key_exchange: ServerKeyExchange; + case certificate_request: CertificateRequest; + case server_hello_done: ServerHelloDone; + case certificate_verify: CertificateVerify; + case client_key_exchange: ClientKeyExchange; + case finished: Finished; + } body; +};</pre> + */ +public final class Handshake implements Constructed +{ + + // Fields. + // ------------------------------------------------------------------------- + + private final ByteBuffer buffer; + private final CipherSuite suite; + private final ProtocolVersion version; + + // Constructors. + // ------------------------------------------------------------------------- + + public Handshake (final ByteBuffer buffer) + { + this (buffer, null, ProtocolVersion.TLS_1_1); + } + + public Handshake (final ByteBuffer buffer, final CipherSuite suite, + final ProtocolVersion version) + { + this.buffer = buffer; + this.suite = suite; + this.version = version; + } + + // Instance methods. + // ------------------------------------------------------------------------- + + /** + * Returns the handshake type. + * + * @return The handshake type. + */ + public Type type() + { + return Type.forInteger (buffer.get (0) & 0xFF); + } + + /** + * Returns the message length. + * + * @return The message length. + */ + public int length () + { + // Length is a uint24. + return buffer.getInt (0) & 0xFFFFFF; + } + + /** + * Returns the handshake message body. Depending on the handshake + * type, some implementation of the Body interface is returned. + * + * @return The handshake body. + */ + public Body body() + { + Type type = type (); + ByteBuffer bodyBuffer = bodyBuffer (); + switch (type) + { + case HELLO_REQUEST: + return new HelloRequest (); + + case CLIENT_HELLO: + return new ClientHello (bodyBuffer); + + case SERVER_HELLO: + return new ServerHello (bodyBuffer); + + case CERTIFICATE: + return new Certificate (bodyBuffer, CertificateType.X509); + + case SERVER_KEY_EXCHANGE: + return new ServerKeyExchange (bodyBuffer, suite); + + case CERTIFICATE_REQUEST: + return new CertificateRequest (bodyBuffer); + + case SERVER_HELLO_DONE: + return new ServerHelloDone (); + + case CERTIFICATE_VERIFY: + return new CertificateVerify (bodyBuffer, suite.signatureAlgorithm ()); + + case CLIENT_KEY_EXCHANGE: + return new ClientKeyExchange (bodyBuffer, suite, version); + + case FINISHED: + return new Finished (bodyBuffer, version); + + case CERTIFICATE_URL: + case CERTIFICATE_STATUS: + throw new UnsupportedOperationException ("FIXME"); + } + throw new IllegalArgumentException ("unknown handshake type " + type); + } + + /** + * Returns a subsequence of the underlying buffer, containing only + * the bytes that compose the handshake body. + * + * @return The body's byte buffer. + */ + public ByteBuffer bodyBuffer () + { + int length = length (); + return ((ByteBuffer) buffer.position (4).limit (4 + length)).slice (); + } + + /** + * Sets the handshake body type. + * + * @param type The handshake type. + */ + public void setType (final Type type) + { + buffer.put (0, (byte) type.getValue ()); + } + + /** + * Sets the length of the handshake body. + * + * @param length The handshake body length. + * @throws java.nio.ReadOnlyBufferException If the underlying buffer + * is not writable. + * @throws IllegalArgumentException of <code>length</code> is not + * between 0 and 16777215, inclusive. + */ + public void setLength (final int length) + { + if (length < 0 || length > 0xFFFFFF) + throw new IllegalArgumentException ("length " + length + " out of range;" + + " must be between 0 and 16777215"); + buffer.put (1, (byte) (length >>> 16)); + buffer.put (2, (byte) (length >>> 8)); + buffer.put (3, (byte) length); + } + + public String toString() + { + return toString (null); + } + + public String toString (final String prefix) + { + StringWriter str = new StringWriter(); + PrintWriter out = new PrintWriter(str); + if (prefix != null) out.print (prefix); + out.println("struct {"); + if (prefix != null) out.print (prefix); + out.print (" type: "); + out.print (type ()); + out.println (";"); + Body body = body (); + out.println (body.toString (prefix != null ? (prefix + " ") : " ")); + if (prefix != null) out.print (prefix); + out.print ("} Handshake;"); + return str.toString(); + } + + // Inner class. + // ------------------------------------------------------------------------- + + public static interface Body extends Constructed + { + int length (); + + String toString (String prefix); + } + + public static enum Type + { + HELLO_REQUEST ( 0), + CLIENT_HELLO ( 1), + SERVER_HELLO ( 2), + CERTIFICATE (11), + SERVER_KEY_EXCHANGE (12), + CERTIFICATE_REQUEST (13), + SERVER_HELLO_DONE (14), + CERTIFICATE_VERIFY (15), + CLIENT_KEY_EXCHANGE (16), + FINISHED (20), + CERTIFICATE_URL (21), + CERTIFICATE_STATUS (22); + + private final int value; + + private Type(int value) + { + this.value = value; + } + + // Class methods. + // ----------------------------------------------------------------------- + + /** + * Convert a raw handshake type value to a type enum value. + * + * @return The corresponding enum value for the raw integer value. + * @throws IllegalArgumentException If the value is not a known handshake + * type. + */ + public static Type forInteger (final int value) + { + switch (value & 0xFF) + { + case 0: return HELLO_REQUEST; + case 1: return CLIENT_HELLO; + case 2: return SERVER_HELLO; + case 11: return CERTIFICATE; + case 12: return SERVER_KEY_EXCHANGE; + case 13: return CERTIFICATE_REQUEST; + case 14: return SERVER_HELLO_DONE; + case 15: return CERTIFICATE_VERIFY; + case 16: return CLIENT_KEY_EXCHANGE; + case 20: return FINISHED; + case 21: return CERTIFICATE_URL; + case 22: return CERTIFICATE_STATUS; + default: throw new IllegalArgumentException ("unsupported value type " + value); + } + } + + public int getValue() + { + return value; + } + } +} |