/**
* BlueCove - Java library for Bluetooth
* Copyright (C) 2004 Intel Corporation
* Copyright (C) 2006-2009 Vlad Skarzhevskyy
* Copyright (C) 2010 Mina Shokry
*
* 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.
*
* @version $Id$
*/
package com.intel.bluetooth;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.bluetooth.BluetoothConnectionException;
import javax.bluetooth.L2CAPConnection;
import javax.bluetooth.UUID;
import javax.microedition.io.Connection;
import javax.microedition.io.ConnectionNotFoundException;
import javax.microedition.io.Connector;
import javax.microedition.io.InputConnection;
import javax.microedition.io.OutputConnection;
import com.intel.bluetooth.gcf.socket.ServerSocketConnection;
import com.intel.bluetooth.gcf.socket.SocketConnection;
import com.intel.bluetooth.obex.OBEXClientSessionImpl;
import com.intel.bluetooth.obex.OBEXConnectionParams;
import com.intel.bluetooth.obex.OBEXSessionNotifierImpl;
/**
*
* Implementation of javax.microedition.io.Connector
* <p>
* <b><u>Your application should not use this class directly.</u></b>
* <p>
* BlueCove specific JSR-82 extension <tt>bluecovepsm</tt> enables the use of specific PSM channel in L2CAP service.
* <tt>btl2cap://localhost;name=...;bluecovepsm=1007</tt>
*/
public abstract class MicroeditionConnector {
/*
* Access mode READ. The value 1 is assigned to READ.
*/
public static final int READ = Connector.READ;
/*
* Access mode WRITE. The value 2 is assigned to WRITE.
*/
public static final int WRITE = Connector.WRITE;
/*
* Access mode READ_WRITE. The value 3 is assigned to READ_WRITE.
*/
public static final int READ_WRITE = Connector.READ_WRITE;
private static Hashtable/* <String, String> */ suportScheme = new Hashtable();
private static Hashtable/* <String, String> */ srvParams = new Hashtable();
private static Hashtable/* <String, String> */ cliParams = new Hashtable();
private static Hashtable/* <String, String> */ cliParamsL2CAP = new Hashtable();
private static Hashtable/* <String, String> */ srvParamsL2CAP = new Hashtable();
private static final String AUTHENTICATE = "authenticate";
private static final String AUTHORIZE = "authorize";
private static final String ENCRYPT = "encrypt";
private static final String MASTER = "master";
private static final String NAME = "name";
private static final String RECEIVE_MTU = "receivemtu";
private static final String TRANSMIT_MTU = "transmitmtu";
private static final String EXT_BLUECOVE_L2CAP_PSM = "bluecovepsm";
private static final String ANDROID = "android";
static {
// cliParams ::== master | encrypt | authenticate
cliParams.put(AUTHENTICATE, AUTHENTICATE);
cliParams.put(ENCRYPT, ENCRYPT);
cliParams.put(MASTER, MASTER);
// srvParams ::== name | master | encrypt | authorize | authenticate
copyAll(srvParams, cliParams);
srvParams.put(AUTHORIZE, AUTHORIZE);
srvParams.put(NAME, NAME);
copyAll(cliParamsL2CAP, cliParams);
cliParamsL2CAP.put(RECEIVE_MTU, RECEIVE_MTU);
cliParamsL2CAP.put(TRANSMIT_MTU, TRANSMIT_MTU);
copyAll(srvParamsL2CAP, cliParamsL2CAP);
srvParamsL2CAP.put(AUTHORIZE, AUTHORIZE);
srvParamsL2CAP.put(NAME, NAME);
srvParamsL2CAP.put(EXT_BLUECOVE_L2CAP_PSM, EXT_BLUECOVE_L2CAP_PSM);
// "socket://" host ":" port
// no validation for socket, since this is internal connector
suportScheme.put(BluetoothConsts.PROTOCOL_SCHEME_RFCOMM, Boolean.TRUE);
suportScheme.put(BluetoothConsts.PROTOCOL_SCHEME_BT_OBEX, Boolean.TRUE);
suportScheme.put(BluetoothConsts.PROTOCOL_SCHEME_TCP_OBEX, Boolean.TRUE);
suportScheme.put(BluetoothConsts.PROTOCOL_SCHEME_L2CAP, Boolean.TRUE);
suportScheme.put("socket", Boolean.TRUE);
}
private MicroeditionConnector() {
}
static void copyAll(Hashtable dest, Hashtable src) {
for (Enumeration en = src.keys(); en.hasMoreElements();) {
Object key = en.nextElement();
dest.put(key, src.get(key));
}
}
static String validParamName(Hashtable map, String paramName) {
String validName = (String) map.get(paramName.toLowerCase());
if (validName != null) {
return validName;
}
// an addition for android.
// a workaround to legalize the non-jsr82-compliant android connection urls
// using a "android=true" parameter at end of the connection string.
if (ANDROID.equals(paramName)) {
return ANDROID;
}
// end of addition to legalize android connection strings.
return null;
}
/*
* Create and open a Connection. Parameters: name - The URL for the connection. Returns: A new Connection object.
* Throws: IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException - If the requested
* connection cannot be made, or the protocol type does not exist. java.io.IOException - If some other kind of I/O
* error occurs. SecurityException - If a requested protocol handler is not permitted.
*/
public static Connection open(String name) throws IOException {
return openImpl(name, READ_WRITE, false, true);
}
private static Connection openImpl(String name, int mode, boolean timeouts, boolean allowServer) throws IOException {
DebugLog.debug("connecting", name);
/*
* parse URL
*/
String host = null;
String portORuuid = null;
Hashtable values = new Hashtable();
// scheme : // host : port [;param=val]
int schemeEnd = name.indexOf("://");
if (schemeEnd == -1) {
throw new ConnectionNotFoundException(name);
}
String scheme = name.substring(0, schemeEnd);
if (!suportScheme.containsKey(scheme)) {
throw new ConnectionNotFoundException(scheme);
}
boolean schemeBluetooth = (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_RFCOMM))
|| (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_BT_OBEX) || (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_L2CAP)));
boolean isL2CAP = scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_L2CAP);
boolean isTCPOBEX = scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_TCP_OBEX);
BluetoothStack bluetoothStack = null;
if (schemeBluetooth) {
bluetoothStack = BlueCoveImpl.instance().getBluetoothStack();
}
boolean isServer;
int hostEnd = name.indexOf(':', scheme.length() + 3);
if (hostEnd > -1) {
host = name.substring(scheme.length() + 3, hostEnd);
isServer = host.equals("localhost");
Hashtable params;
if (isTCPOBEX) {
params = new Hashtable();
isServer = (host.length() == 0);
} else if (isL2CAP) {
if (isServer) {
params = srvParamsL2CAP;
} else {
params = cliParamsL2CAP;
}
} else {
if (isServer) {
params = srvParams;
} else {
params = cliParams;
}
}
String paramsStr = name.substring(hostEnd + 1);
UtilsStringTokenizer tok = new UtilsStringTokenizer(paramsStr, ";");
if (tok.hasMoreTokens()) {
portORuuid = tok.nextToken();
} else {
portORuuid = paramsStr;
}
while (tok.hasMoreTokens()) {
String t = tok.nextToken();
int equals = t.indexOf('=');
if (equals > -1) {
String param = t.substring(0, equals);
String value = t.substring(equals + 1);
String validName = validParamName(params, param);
if (validName != null) {
String hasValue = (String) values.get(validName);
if ((hasValue != null) && (!hasValue.equals(value))) {
throw new IllegalArgumentException("duplicate param [" + param + "] value [" + value + "]");
}
values.put(validName, value);
} else {
throw new IllegalArgumentException("invalid param [" + param + "] value [" + value + "]");
}
} else {
throw new IllegalArgumentException("invalid param [" + t + "]");
}
}
} else if (isTCPOBEX) {
host = name.substring(scheme.length() + 3);
isServer = (host.length() == 0);
} else {
throw new IllegalArgumentException(name.substring(scheme.length() + 3));
}
if (isTCPOBEX) {
if ((portORuuid == null) || (portORuuid.length() == 0)) {
portORuuid = String.valueOf(BluetoothConsts.TCP_OBEX_DEFAULT_PORT);
}
// else {
// try {
// int port = Integer.parseInt(portORuuid);
// if ((port < 1023) && (port !=
// BluetoothConsts.TCP_OBEX_DEFAULT_PORT)) {
// throw new IllegalArgumentException("Port " + portORuuid + " can't
// be used; the 0-1023 range is reserved");
// }
// } catch (NumberFormatException e) {
// throw new IllegalArgumentException("port " + portORuuid);
// }
// }
}
if (host == null || portORuuid == null) {
throw new IllegalArgumentException();
}
BluetoothConnectionNotifierParams notifierParams = null;
BluetoothConnectionParams connectionParams = null;
boolean isAndroid = values.containsKey(ANDROID);
int channel = 0;
if (isServer) {
if (!allowServer) {
throw new IllegalArgumentException("Can't use server connection URL");
}
if (values.get(NAME) == null) {
values.put(NAME, "BlueCove");
} else if (schemeBluetooth) {
validateBluetoothServiceName((String) values.get(NAME));
}
if (schemeBluetooth) {
notifierParams = new BluetoothConnectionNotifierParams(new UUID(portORuuid, false), paramBoolean(
values, AUTHENTICATE), paramBoolean(values, ENCRYPT), paramBoolean(values, AUTHORIZE),
(String) values.get(NAME), paramBoolean(values, MASTER));
notifierParams.timeouts = timeouts;
if (notifierParams.encrypt && (!notifierParams.authenticate)) {
if (values.get(AUTHENTICATE) == null) {
notifierParams.authenticate = true;
} else {
throw new BluetoothConnectionException(BluetoothConnectionException.UNACCEPTABLE_PARAMS,
"encryption requires authentication");
}
}
if (notifierParams.authorize && (!notifierParams.authenticate)) {
if (values.get(AUTHENTICATE) == null) {
notifierParams.authenticate = true;
} else {
throw new BluetoothConnectionException(BluetoothConnectionException.UNACCEPTABLE_PARAMS,
"authorization requires authentication");
}
}
if (isL2CAP) {
String bluecove_ext_psm = (String) values.get(EXT_BLUECOVE_L2CAP_PSM);
if (bluecove_ext_psm != null) {
if ((bluetoothStack.getFeatureSet() & BluetoothStack.FEATURE_ASSIGN_SERVER_PSM) == 0) {
throw new IllegalArgumentException(EXT_BLUECOVE_L2CAP_PSM + " extension not supported on this stack");
}
int psm = Integer.parseInt(bluecove_ext_psm, 16);
validateL2CAPPSM(psm, bluecove_ext_psm);
notifierParams.bluecove_ext_psm = psm;
}
}
}
} else { // (!isServer)
if (!isAndroid) {
try {
channel = Integer.parseInt(portORuuid, isL2CAP ? 16 : 10);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("channel " + portORuuid);
}
if (channel < 0) {
throw new IllegalArgumentException("channel " + portORuuid);
}
}
if (schemeBluetooth) {
if (!isAndroid) {
if (isL2CAP) {
validateL2CAPPSM(channel, portORuuid);
} else {
if ((channel < BluetoothConsts.RFCOMM_CHANNEL_MIN)
|| (channel > BluetoothConsts.RFCOMM_CHANNEL_MAX)) {
throw new IllegalArgumentException("RFCOMM channel " + portORuuid);
}
}
connectionParams = new BluetoothConnectionParams(RemoteDeviceHelper.getAddress(host), channel,
paramBoolean(values, AUTHENTICATE), paramBoolean(values, ENCRYPT));
} else {
try {
// using reflection not to add a dependency on android module
connectionParams = (BluetoothConnectionParams) Class.forName("com.intel.bluetooth.AndroidBluetoothConnectionParams").getConstructor(new Class[]{long.class, boolean.class, boolean.class}).newInstance(new Object[]{Long.valueOf(RemoteDeviceHelper.getAddress(host)),
Boolean.valueOf(paramBoolean(values, AUTHENTICATE)), Boolean.valueOf(paramBoolean(values, ENCRYPT))});
connectionParams.getClass().getMethod("setServiceUUID", new Class[] {String.class}).invoke(connectionParams, new Object[] {portORuuid});
} catch (Exception ex) {
throw new BluetoothConnectionException(BluetoothConnectionException.FAILED_NOINFO, ex.toString());
}
}
connectionParams.timeouts = timeouts;
if (connectionParams.encrypt && (!connectionParams.authenticate)) {
if (values.get(AUTHENTICATE) == null) {
connectionParams.authenticate = true;
} else {
throw new BluetoothConnectionException(BluetoothConnectionException.UNACCEPTABLE_PARAMS,
"encryption requires authentication");
}
}
connectionParams.timeout = BlueCoveImpl.getConfigProperty(
BlueCoveConfigProperties.PROPERTY_CONNECT_TIMEOUT,
BluetoothConnectionParams.DEFAULT_CONNECT_TIMEOUT);
}
}
OBEXConnectionParams obexConnectionParams = null;
if (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_TCP_OBEX)
|| scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_BT_OBEX)) {
obexConnectionParams = new OBEXConnectionParams();
obexConnectionParams.timeouts = timeouts;
obexConnectionParams.timeout = BlueCoveImpl.getConfigProperty(
BlueCoveConfigProperties.PROPERTY_OBEX_TIMEOUT, OBEXConnectionParams.DEFAULT_TIMEOUT);
obexConnectionParams.mtu = BlueCoveImpl.getConfigProperty(BlueCoveConfigProperties.PROPERTY_OBEX_MTU,
OBEXConnectionParams.OBEX_DEFAULT_MTU);
}
/*
* create connection
*/
if (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_RFCOMM)) {
if (isServer) {
return new BluetoothRFCommConnectionNotifier(bluetoothStack, notifierParams);
} else {
return new BluetoothRFCommClientConnection(bluetoothStack, connectionParams);
}
} else if (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_BT_OBEX)) {
if (isServer) {
notifierParams.obex = true;
return new OBEXSessionNotifierImpl(
new BluetoothRFCommConnectionNotifier(bluetoothStack, notifierParams), obexConnectionParams);
} else {
return new OBEXClientSessionImpl(new BluetoothRFCommClientConnection(bluetoothStack, connectionParams),
obexConnectionParams);
}
} else if (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_L2CAP)) {
if (isServer) {
return new BluetoothL2CAPConnectionNotifier(bluetoothStack, notifierParams, paramL2CAPMTU(values,
RECEIVE_MTU), paramL2CAPMTU(values, TRANSMIT_MTU));
} else {
return new BluetoothL2CAPClientConnection(bluetoothStack, connectionParams, paramL2CAPMTU(values,
RECEIVE_MTU), paramL2CAPMTU(values, TRANSMIT_MTU));
}
} else if (scheme.equals(BluetoothConsts.PROTOCOL_SCHEME_TCP_OBEX)) {
if (isServer) {
try {
channel = Integer.parseInt(portORuuid);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("port " + portORuuid);
}
return new OBEXSessionNotifierImpl(new ServerSocketConnection(channel), obexConnectionParams);
} else {
return new OBEXClientSessionImpl(new SocketConnection(host, channel), obexConnectionParams);
}
} else if (scheme.equals("socket")) {
if (isServer) {
try {
channel = Integer.parseInt(portORuuid);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("port " + portORuuid);
}
return new ServerSocketConnection(channel);
} else {
return new SocketConnection(host, channel);
}
} else {
throw new ConnectionNotFoundException("scheme [" + scheme + "]");
}
}
private static void validateL2CAPPSM(int channel, String channelAsString) throws IllegalArgumentException {
// Valid PSM range: 0x0001-0x0019 (0x1001-0xFFFF dynamically
// assigned, 0x0019-0x0100 reserved for future use).
if ((channel < BluetoothConsts.L2CAP_PSM_MIN) || (channel > BluetoothConsts.L2CAP_PSM_MAX)) {
// PSM 1 discovery, 3 RFCOMM
throw new IllegalArgumentException("PCM " + channelAsString);
}
if ((channel < BluetoothConsts.L2CAP_PSM_MIN_JSR_82)
&& (!BlueCoveImpl.getConfigProperty(BlueCoveConfigProperties.PROPERTY_JSR_82_PSM_MINIMUM_OFF, false))) {
throw new IllegalArgumentException("PCM " + channelAsString + ", PCM values restricted by JSR-82 to minimum "
+ BluetoothConsts.L2CAP_PSM_MIN_JSR_82 + ", see BlueCoveConfigProperties.PROPERTY_JSR_82_PSM_MINIMUM_OFF");
}
// has the 9th bit (0x100) set to zero
if ((channel & 0x100) != 0) {
throw new IllegalArgumentException("9th bit set in PCM " + channelAsString);
}
// The least significant byte must be odd
byte lsByte = (byte) (0xFF & channel);
if ((lsByte % 2) == 0) {
throw new IllegalArgumentException("PSM value " + channelAsString + " least significant byte must be odd");
}
byte msByte = (byte) ((0xFF00 & channel) >> 8);
if ((msByte % 2) == 1) {
throw new IllegalArgumentException("PSM value " + channelAsString + " most significant byte must be even");
}
}
private static void validateBluetoothServiceName(String serviceName) {
if (serviceName.length() == 0) {
throw new IllegalArgumentException("zero length service name");
}
final String allowNameCharactes = " -_";
for (int i = 0; i < serviceName.length(); i++) {
char c = serviceName.charAt(i);
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9')
|| allowNameCharactes.indexOf(c) != -1) {
continue;
}
throw new IllegalArgumentException("Illegal character '" + c + "' in service name");
}
}
private static boolean paramBoolean(Hashtable values, String name) {
String v = (String) values.get(name);
if (v == null) {
return false;
} else if ("true".equals(v)) {
return true;
} else if ("false".equals(v)) {
return false;
} else {
throw new IllegalArgumentException("invalid param value " + name + "=" + v);
}
}
private static int paramL2CAPMTU(Hashtable values, String name) {
String v = (String) values.get(name);
if (v == null) {
if (name.equals(TRANSMIT_MTU)) {
// This will select RemoteMtu
return -1;
} else {
return L2CAPConnection.DEFAULT_MTU;
}
}
try {
int mtu = Integer.parseInt(v);
if (mtu >= L2CAPConnection.MINIMUM_MTU) {
return mtu;
}
if ((mtu > 0) && (mtu < L2CAPConnection.MINIMUM_MTU) && (name.equals(TRANSMIT_MTU))) {
return L2CAPConnection.MINIMUM_MTU;
}
} catch (NumberFormatException e) {
throw new IllegalArgumentException("invalid MTU value " + v);
}
throw new IllegalArgumentException("invalid MTU param value " + name + "=" + v);
}
/*
* Create and open a Connection. Parameters: name - The URL for the connection. mode - The access mode. Returns: A
* new Connection object. Throws: IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException
* - If the requested connection cannot be made, or the protocol type does not exist. java.io.IOException - If some
* other kind of I/O error occurs. SecurityException - If a requested protocol handler is not permitted.
*/
public static Connection open(String name, int mode) throws IOException {
return openImpl(name, mode, false, true);
}
/*
* Create and open a Connection. Parameters: name - The URL for the connection mode - The access mode timeouts - A
* flag to indicate that the caller wants timeout exceptions Returns: A new Connection object Throws:
* IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException - if the requested connection
* cannot be made, or the protocol type does not exist. java.io.IOException - If some other kind of I/O error
* occurs. SecurityException - If a requested protocol handler is not permitted.
*/
public static Connection open(String name, int mode, boolean timeouts) throws IOException {
return openImpl(name, mode, timeouts, true);
}
/*
* Create and open a connection input stream. Parameters: name - The URL for the connection. Returns: A
* DataInputStream. Throws: IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException - If
* the connection cannot be found. java.io.IOException - If some other kind of I/O error occurs. SecurityException -
* If access to the requested stream is not permitted.
*/
public static DataInputStream openDataInputStream(String name) throws IOException {
return new DataInputStream(openInputStream(name));
}
/*
* Create and open a connection output stream. Parameters: name - The URL for the connection. Returns: A
* DataOutputStream. Throws: IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException - If
* the connection cannot be found. java.io.IOException - If some other kind of I/O error occurs. SecurityException -
* If access to the requested stream is not permitted.
*/
public static DataOutputStream openDataOutputStream(String name) throws IOException {
return new DataOutputStream(openOutputStream(name));
}
/*
* Create and open a connection input stream. Parameters: name - The URL for the connection. Returns: An
* InputStream. Throws: IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException - If the
* connection cannot be found. java.io.IOException - If some other kind of I/O error occurs. SecurityException - If
* access to the requested stream is not permitted.
*/
public static InputStream openInputStream(String name) throws IOException {
InputConnection con = ((InputConnection) openImpl(name, READ, false, false));
try {
return con.openInputStream();
} finally {
con.close();
}
}
/*
* Create and open a connection output stream. Parameters: name - The URL for the connection. Returns: An
* OutputStream. Throws: IllegalArgumentException - If a parameter is invalid. ConnectionNotFoundException - If the
* connection cannot be found. java.io.IOException - If some other kind of I/O error occurs. SecurityException - If
* access to the requested stream is not permitted.
*/
public static OutputStream openOutputStream(String name) throws IOException {
OutputConnection con = ((OutputConnection) openImpl(name, WRITE, false, false));
try {
return con.openOutputStream();
} finally {
con.close();
}
}
}