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BTConnection.cpp
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BTConnection.cpp
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/*
* This file is part of buteo-sync-plugins package
*
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
*
* Contact: Sateesh Kavuri <sateesh.kavuri@nokia.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of Nokia Corporation nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "BTConnection.h"
#include <unistd.h>
#include <QtDBus>
#include <QDBusConnection>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <termios.h>
#include "SyncMLPluginLogging.h"
#define BLUEZ_DEST "org.bluez"
#define BLUEZ_MANAGER_INTERFACE "org.bluez.Manager"
#define BLUEZ_ADAPTER_INTERFACE "org.bluez.Adapter"
#define BLUEZ_SERIAL_INTERFACE "org.bluez.Serial"
#define REQUEST_SESSION "RequestSession"
#define RELEASE_SESSION "ReleaseSession"
#define GET_DEFAULT_ADAPTER "DefaultAdapter"
#define FIND_DEVICE "FindDevice"
#define CREATE_DEVICE "CreateDevice"
#define CREATE_PAIRED_DEVICE "CreatePairedDevice"
#define CONNECT "Connect"
#define DISCONNECT "Disconnect"
BTConnection::BTConnection()
: iFd( -1 )
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
}
BTConnection::~BTConnection()
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
disconnect();
}
void BTConnection::setConnectionInfo( const QString& aBTAddress,
const QString& aServiceUUID )
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
iBTAddress = aBTAddress;
iServiceUUID = aServiceUUID;
}
int BTConnection::connect()
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
if( iFd != -1 ) {
qCDebug(lcSyncMLPlugin) << "Using existing connection";
return iFd;
}
iDevice = connectDevice( iBTAddress, iServiceUUID );
if( iDevice.isEmpty() ) {
qCCritical(lcSyncMLPlugin) << "Could not connect to device" << iBTAddress << ", aborting";
return -1;
}
// HACK: In Sailfish, sometimes, opening the device
// immediately after the bluetooth connect fails and works only
// if some delay is introduced.
// Since a plugin runs in a separate thread/process (incase of oop)
// it is okay to introduce some delay before the open. We will use
// a retry count of 3 to open the connection and finally giveup
// otherwise
int retryCount = 3;
do {
iFd = open( iDevice.toLatin1().constData(), O_RDWR | O_NOCTTY | O_SYNC );
if (iFd > 0) break;
QThread::msleep (100); // Sleep for 100msec before trying again
} while ((--retryCount > 0) && (iFd == -1));
if( iFd == -1 ) {
qCCritical(lcSyncMLPlugin) << "Could not open file descriptor of the connection, aborting";
disconnectDevice( iBTAddress, iDevice );
return -1;
}
fdRawMode( iFd );
return iFd;
}
bool BTConnection::isConnected() const
{
if( iFd != -1 )
{
return true;
}
else
{
return false;
}
}
void BTConnection::disconnect()
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
if( iFd != -1 ) {
close( iFd );
iFd = -1;
}
if( !iDevice.isEmpty() ) {
disconnectDevice( iBTAddress, iDevice );
}
}
QString BTConnection::connectDevice( const QString& aBTAddress, const QString& aServiceUUID )
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
QDBusInterface managerInterface( BLUEZ_DEST, "/", BLUEZ_MANAGER_INTERFACE, QDBusConnection::systemBus() );
if( !managerInterface.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find BlueZ manager interface";
return "";
}
QDBusReply<QDBusObjectPath> pathReply = managerInterface.call( QLatin1String( GET_DEFAULT_ADAPTER ) );
if( !pathReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find default adapter path:" << pathReply.error();
return "";
}
QString defaultAdapterPath = pathReply.value().path();
qCDebug(lcSyncMLPlugin) << "Using adapter path: " << defaultAdapterPath;
QDBusInterface adapterInterface( BLUEZ_DEST, defaultAdapterPath, BLUEZ_ADAPTER_INTERFACE, QDBusConnection::systemBus() );
if( !adapterInterface.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find adapter interface: " << adapterInterface.lastError();
return "";
}
QDBusReply<void> voidReply = adapterInterface.call( QLatin1String( REQUEST_SESSION ) );
if( !voidReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Session request failed";
qCCritical(lcSyncMLPlugin) << "Reason:" << voidReply.error();
}
qCDebug(lcSyncMLPlugin) << "BT session created";
pathReply = adapterInterface.call( QLatin1String( FIND_DEVICE ), aBTAddress );
if( !pathReply.isValid() ) {
qCWarning(lcSyncMLPlugin) << "Couldn't find device " << aBTAddress << "Reason:" << pathReply.error();
qCDebug(lcSyncMLPlugin) << "Create Device :" << aBTAddress;
pathReply = adapterInterface.call( QLatin1String( CREATE_DEVICE ), aBTAddress );
if (pathReply.isValid()){
qCDebug(lcSyncMLPlugin) << "Create Paired Device :" << aBTAddress << "Path :" << pathReply.value().path();
QDBusReply<QDBusObjectPath> reply =
adapterInterface.call(QLatin1String( CREATE_PAIRED_DEVICE ),
aBTAddress, qVariantFromValue(pathReply.value()), QString());
if( !reply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Pairing failed Reason:" << reply.error();
}
}
}
if( !pathReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Couldn't find device " << aBTAddress;
qCCritical(lcSyncMLPlugin) << "Reason:" << pathReply.error();
adapterInterface.call( QLatin1String( RELEASE_SESSION ) );
qCCritical(lcSyncMLPlugin) << "BT session closed";
return "";
}
QString devicePath = pathReply.value().path();
qCDebug(lcSyncMLPlugin) << "Using path" << devicePath << "for device " << aBTAddress;
QDBusInterface serialInterface( BLUEZ_DEST, devicePath, BLUEZ_SERIAL_INTERFACE, QDBusConnection::systemBus() );
if( !serialInterface.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find serial interface: " << serialInterface.lastError();
adapterInterface.call( QLatin1String( RELEASE_SESSION ) );
qCCritical(lcSyncMLPlugin) << "BT session closed";
return "";
}
QDBusReply<QString> stringReply = serialInterface.call( QLatin1String( CONNECT ), aServiceUUID );
if( !stringReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not connect to device " << devicePath << " with service uuid " << aServiceUUID;
qCCritical(lcSyncMLPlugin) << "Reason:" << stringReply.error();
adapterInterface.call( QLatin1String( RELEASE_SESSION ) );
qCCritical(lcSyncMLPlugin) << "BT session closed";
return "";
}
qCDebug(lcSyncMLPlugin) << "Device connected:" << aBTAddress;
return stringReply.value();
}
void BTConnection::disconnectDevice( const QString& aBTAddress, const QString& aDevice )
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
QDBusInterface managerInterface( BLUEZ_DEST, "/", BLUEZ_MANAGER_INTERFACE, QDBusConnection::systemBus() );
if( !managerInterface.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find BlueZ manager interface";
return;
}
QDBusReply<QDBusObjectPath> pathReply = managerInterface.call( QLatin1String( GET_DEFAULT_ADAPTER ) );
if( !pathReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find default adapter path";
qCCritical(lcSyncMLPlugin) << "Reason:" << pathReply.error();
return;
}
QString defaultAdapterPath = pathReply.value().path();
qCDebug(lcSyncMLPlugin) << "Using adapter path: " << defaultAdapterPath;
QDBusInterface adapterInterface( BLUEZ_DEST, defaultAdapterPath, BLUEZ_ADAPTER_INTERFACE, QDBusConnection::systemBus() );
if( !adapterInterface.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find adapter interface: " << adapterInterface.lastError();
return;
}
pathReply = adapterInterface.call( QLatin1String( FIND_DEVICE ), aBTAddress );
if( !pathReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Couldn't find device " << aBTAddress;
qCCritical(lcSyncMLPlugin) << "Reason:" << pathReply.error();
return;
}
QString devicePath = pathReply.value().path();
qCDebug(lcSyncMLPlugin) << "Using path" << devicePath << "for device " << aBTAddress;
QDBusInterface serialInterface( BLUEZ_DEST, devicePath, BLUEZ_SERIAL_INTERFACE, QDBusConnection::systemBus() );
if( !serialInterface.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Could not find serial interface: " << serialInterface.lastError();
return;
}
QDBusReply<void> voidReply = serialInterface.call( QLatin1String( DISCONNECT ), aDevice );
if( !voidReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Device disconnection failed";
qCCritical(lcSyncMLPlugin) << "Reason:" << voidReply.error();
return;
}
qCDebug(lcSyncMLPlugin) << "Device disconnected:" << aBTAddress;
voidReply = adapterInterface.call( RELEASE_SESSION );
if( !voidReply.isValid() ) {
qCCritical(lcSyncMLPlugin) << "Session release failed";
qCCritical(lcSyncMLPlugin) << "Reason:" << voidReply.error();
return;
}
qCDebug(lcSyncMLPlugin) << "BT session closed";
iDevice.clear();
}
bool BTConnection::fdRawMode( int aFD )
{
FUNCTION_CALL_TRACE(lcSyncMLPluginTrace);
struct termios mode;
if (tcgetattr(aFD, &mode)) {
return false;
}
cfmakeraw(&mode);
if (tcsetattr(aFD, TCSADRAIN, &mode)) {
return false;
}
return true;
}