summaryrefslogtreecommitdiffstats
path: root/crypto/src/main/java/org/conscrypt/ClientHello.java
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/src/main/java/org/conscrypt/ClientHello.java')
-rw-r--r--crypto/src/main/java/org/conscrypt/ClientHello.java207
1 files changed, 0 insertions, 207 deletions
diff --git a/crypto/src/main/java/org/conscrypt/ClientHello.java b/crypto/src/main/java/org/conscrypt/ClientHello.java
deleted file mode 100644
index 2bf9f5f..0000000
--- a/crypto/src/main/java/org/conscrypt/ClientHello.java
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF 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
- *
- * 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 org.conscrypt;
-
-import java.io.IOException;
-import java.security.SecureRandom;
-import java.util.Arrays;
-import libcore.io.Streams;
-import org.conscrypt.util.EmptyArray;
-
-/**
- * Represents Client Hello message
- * @see <a href="http://www.ietf.org/rfc/rfc2246.txt">TLS 1.0 spec., 7.4.1.2.
- * Client hello</a>
- *
- */
-public class ClientHello extends Message {
-
- /**
- * Client version
- */
- final byte[] client_version;
-
- /**
- * Random bytes
- */
- final byte[] random = new byte[32];
-
- /**
- * Session id
- */
- final byte[] session_id;
-
- /**
- * Cipher suites supported by the client
- */
- final CipherSuite[] cipher_suites;
-
- /**
- * Compression methods supported by the client
- */
- final byte[] compression_methods;
-
- /**
- * Creates outbound message
- * @param sr
- * @param version
- * @param ses_id
- * @param cipher_suite
- */
- public ClientHello(SecureRandom sr, byte[] version, byte[] ses_id,
- CipherSuite[] cipher_suite) {
- client_version = version;
- long gmt_unix_time = System.currentTimeMillis()/1000;
- sr.nextBytes(random);
- random[0] = (byte) (gmt_unix_time & 0xFF000000 >>> 24);
- random[1] = (byte) (gmt_unix_time & 0xFF0000 >>> 16);
- random[2] = (byte) (gmt_unix_time & 0xFF00 >>> 8);
- random[3] = (byte) (gmt_unix_time & 0xFF);
- session_id = ses_id;
- this.cipher_suites = cipher_suite;
- compression_methods = new byte[] { 0 }; // CompressionMethod.null
- length = 38 + session_id.length + (this.cipher_suites.length << 1)
- + compression_methods.length;
- }
-
- /**
- * Creates inbound message
- * @param in
- * @param length
- * @throws IOException
- */
- public ClientHello(HandshakeIODataStream in, int length) throws IOException {
- client_version = new byte[2];
- client_version[0] = (byte) in.readUint8();
- client_version[1] = (byte) in.readUint8();
- Streams.readFully(in, random);
- int size = in.read();
- session_id = new byte[size];
- in.read(session_id, 0, size);
- int l = in.readUint16();
- if ((l & 0x01) == 0x01) { // cipher suites length must be an even number
- fatalAlert(AlertProtocol.DECODE_ERROR,
- "DECODE ERROR: incorrect ClientHello");
- }
- size = l >> 1;
- cipher_suites = new CipherSuite[size];
- for (int i = 0; i < size; i++) {
- byte b0 = (byte) in.read();
- byte b1 = (byte) in.read();
- cipher_suites[i] = CipherSuite.getByCode(b0, b1);
- }
- size = in.read();
- compression_methods = new byte[size];
- in.read(compression_methods, 0, size);
- this.length = 38 + session_id.length + (cipher_suites.length << 1)
- + compression_methods.length;
- if (this.length > length) {
- fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect ClientHello");
- }
- // for forward compatibility, extra data is permitted;
- // must be ignored
- if (this.length < length) {
- in.skip(length - this.length);
- this.length = length;
- }
- }
- /**
- * Parse V2ClientHello
- * @param in
- * @throws IOException
- */
- public ClientHello(HandshakeIODataStream in) throws IOException {
- if (in.readUint8() != 1) {
- fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello");
- }
- client_version = new byte[2];
- client_version[0] = (byte) in.readUint8();
- client_version[1] = (byte) in.readUint8();
- int cipher_spec_length = in.readUint16();
- if (in.readUint16() != 0) { // session_id_length
- // as client already knows the protocol known to a server it should
- // initiate the connection in that native protocol
- fatalAlert(AlertProtocol.DECODE_ERROR,
- "DECODE ERROR: incorrect V2ClientHello, cannot be used for resuming");
- }
- int challenge_length = in.readUint16();
- if (challenge_length < 16) {
- fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello, short challenge data");
- }
- session_id = EmptyArray.BYTE;
- cipher_suites = new CipherSuite[cipher_spec_length/3];
- for (int i = 0; i < cipher_suites.length; i++) {
- byte b0 = (byte) in.read();
- byte b1 = (byte) in.read();
- byte b2 = (byte) in.read();
- cipher_suites[i] = CipherSuite.getByCode(b0, b1, b2);
- }
- compression_methods = new byte[] { 0 }; // CompressionMethod.null
-
- if (challenge_length < 32) {
- Arrays.fill(random, 0, 32 - challenge_length, (byte)0);
- System.arraycopy(in.read(challenge_length), 0, random, 32 - challenge_length, challenge_length);
- } else if (challenge_length == 32) {
- System.arraycopy(in.read(32), 0, random, 0, 32);
- } else {
- System.arraycopy(in.read(challenge_length), challenge_length - 32, random, 0, 32);
- }
- if (in.available() > 0) {
- fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello, extra data");
- }
- this.length = 38 + session_id.length + (cipher_suites.length << 1)
- + compression_methods.length;
- }
-
- /**
- * Sends message
- * @param out
- */
- @Override
- public void send(HandshakeIODataStream out) {
- out.write(client_version);
- out.write(random);
- out.writeUint8(session_id.length);
- out.write(session_id);
- int size = cipher_suites.length << 1;
- out.writeUint16(size);
- for (int i = 0; i < cipher_suites.length; i++) {
- out.write(cipher_suites[i].toBytes());
- }
- out.writeUint8(compression_methods.length);
- for (int i = 0; i < compression_methods.length; i++) {
- out.write(compression_methods[i]);
- }
- }
-
- /**
- * Returns client random
- * @return client random
- */
- public byte[] getRandom() {
- return random;
- }
-
- /**
- * Returns message type
- */
- @Override
- public int getType() {
- return Handshake.CLIENT_HELLO;
- }
-}
generated by cgit v1.1 at 2024-06-12 16:36:15 +0000