/*
*
* Copyright 1990-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program 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.
*
* This program 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 at /legal/license.txt).
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.jsr082.obex;
import javax.obex.ClientSession;
import javax.obex.HeaderSet;
import javax.obex.Operation;
import javax.obex.ResponseCodes;
import java.io.IOException;
/*
* The class implements client side of session.
*/
public class ClientSessionImpl extends ObexPacketStream
implements ClientSession {
private boolean busy;
private Object lockObject = new Object();
private int owner;
/*
* Current active operation. When not null, all method is ClientSession
* is blocked.
*/
Operation operation = null;
private long connId = -1;
public ClientSessionImpl(ObexTransport transport) throws IOException {
super(transport);
// owner field of all created HeaderSets
owner = HeaderSetImpl.OWNER_CLIENT;
isClient = true;
}
public HeaderSet createHeaderSet() {
return new HeaderSetImpl(HeaderSetImpl.OWNER_CLIENT_USER);
}
private void lockCheckHeaders(HeaderSet headers) throws IOException {
if (isClosed()) {
throw new IOException("session closed");
}
if (operation != null) {
throw new IOException("already in operation");
}
if (headers != null) {
if (!(headers instanceof HeaderSetImpl)
|| ((HeaderSetImpl)headers).owner == owner) {
throw new IllegalArgumentException("wrong headerset class");
}
}
synchronized (lockObject) {
if (busy) {
throw new IOException("already in operation");
}
busy = true;
}
}
private void unlock() {
synchronized (lockObject) {
busy = false;
}
}
void onAuthenticationFailure(byte[] username) throws IOException {
if (operation != null) {
operation.abort();
}
throw new IOException("server is not authenticated");
}
void onMissingAuthResponse() throws IOException {
if (packetType != ResponseCodes.OBEX_HTTP_UNAUTHORIZED) {
if (operation != null) {
operation.abort();
}
throw new IOException("no auth response from server");
}
}
public void setConnectionID(long id) {
if (id < 0L || id > 0xFFFFFFFFL) {
throw new IllegalArgumentException("invalid id");
}
connId = id;
}
public long getConnectionID() {
return connId;
}
void headerTooLarge() throws IOException {
throw new IOException("header too large");
}
public HeaderSet connect(HeaderSet headers) throws IOException {
lockCheckHeaders(headers);
try {
if (isConnected) {
throw new IOException("already connected");
}
byte[] head = {
(byte)OPCODE_CONNECT,
0, 0, // length will be here
0x10, // obex protocol version 1.0
0x00, // flags, all zero for this version of OBEX
// maximum client supported packet length
(byte) (OBEX_MAXIMUM_PACKET_LENGTH / 0x100),
(byte) (OBEX_MAXIMUM_PACKET_LENGTH % 0x100),
};
sendPacket(head, -1, (HeaderSetImpl) headers, true);
recvPacket();
if (packetLength < 7 || buffer[3] != 0x10) {
// IMPL_NOTE: It is not decided what the implementation should do
// if the OBEX version does not match. For example, Windows
// implementation uses version 1.2, Linux implementation
// uses version 1.1. JSR-82 should probably work with both.
// throw new IOException("unsupported server obex version");
}
HeaderSetImpl recvHeaders = new HeaderSetImpl(owner);
parsePacketHeaders(recvHeaders, 7);
if (shouldSendAuthResponse()) {
// server ignores challenge before authenticating client
authFailed = false;
sendPacket(head, -1, (HeaderSetImpl) headers, true);
recvPacket();
if (packetLength < 7 || buffer[3] != 0x10) {
// IMPL_NOTE: See the comment above.
// throw new IOException("unsupported server obex version");
}
recvHeaders = new HeaderSetImpl(owner);
parsePacketHeaders(recvHeaders, 7);
}
maxSendLength = decodeLength16(5);
if (maxSendLength > OBEX_MAXIMUM_PACKET_LENGTH) {
maxSendLength = OBEX_MAXIMUM_PACKET_LENGTH;
}
if (packetType == ResponseCodes.OBEX_HTTP_OK) {
if (authFailed) {
throw new IOException("server is not authenticated");
}
isConnected = true;
}
return recvHeaders;
} finally {
unlock();
}
}
public HeaderSet disconnect(HeaderSet headers) throws IOException {
lockCheckHeaders(headers);
try {
if (!isConnected) {
throw new IOException("not connected");
}
sendPacket(PACKET_DISCONNECT, connId,
(HeaderSetImpl) headers, true);
recvPacket();
HeaderSetImpl recvHeaders = new HeaderSetImpl(owner);
parsePacketHeaders(recvHeaders, 3);
if (packetType == ResponseCodes.OBEX_HTTP_OK) {
isConnected = false;
}
return recvHeaders;
} finally {
unlock();
}
}
public Operation put(HeaderSet headers) throws IOException {
lockCheckHeaders(headers);
try {
if (!isConnected) {
throw new IOException("not connected");
}
new ClientOperation(this,
(HeaderSetImpl) headers, false);
return operation;
} finally {
unlock();
}
}
public Operation get(HeaderSet headers) throws IOException {
lockCheckHeaders(headers);
try {
if (!isConnected) {
throw new IOException("not connected");
}
new ClientOperation(this, (HeaderSetImpl)headers, true);
return operation;
} finally {
unlock();
}
}
public HeaderSet setPath(HeaderSet headers, boolean backup,
boolean create) throws IOException {
lockCheckHeaders(headers);
try {
if (!isConnected) {
throw new IOException("not connected");
}
byte[] head = {
(byte)OPCODE_SETPATH,
0, 0, // length will be here
(byte)((backup ? 1 : 0) + (create ? 0 : 2)), // flags
0x00, // constants
};
sendPacket(head, connId, (HeaderSetImpl) headers, true);
recvPacket();
HeaderSetImpl recvHeaders = new HeaderSetImpl(owner);
parsePacketHeaders(recvHeaders, 3);
if (shouldSendAuthResponse()) {
// server ignores challenge before authenticating client
authFailed = false;
sendPacket(head, connId, (HeaderSetImpl) headers, true);
recvPacket();
recvHeaders = new HeaderSetImpl(owner);
parsePacketHeaders(recvHeaders, 3);
}
return recvHeaders;
} finally {
unlock();
}
}
public HeaderSet delete(HeaderSet headers) throws IOException {
lockCheckHeaders(headers);
try {
if (!isConnected) {
throw new IOException("not connected");
}
Operation op = new ClientOperation(this,
(HeaderSetImpl)headers, false);
op.getResponseCode(); // indicates end of operation
HeaderSet recvHeaders = op.getReceivedHeaders();
op.close();
return recvHeaders;
} finally {
unlock();
}
}
}