opiebluez: add scanning.

Ok, guys, everything until now was easy. It gets very ugly to go from here - even
to just get the name of a remote device, you have to setup some filters on the bluez socket,
fill in some random flags to generate a PDU that calls 'get name' and then afterwards
poll until the result comes in. Nasty :/

The BlueZ kernel interface seems to be very badly (if at all) documented.
All people are assuming that you use libbluetooth to talk to that stack.
However since libbluetooth is GPL, we can't do that :/
Guess, we are stuck here until someone finds time and/or motivation to look
into that and create some easy-to-understand examples for how to talk
directly to the BlueZ kernel interface.

3 files changed, 160 insertions, 14 deletions

diff --git a/examples/opiebluez/oblueztest/main.cpp b/examples/opiebluez/oblueztest/main.cpp
index 361dbd8..6c2ca75 100644
--- a/examples/opiebluez/oblueztest/main.cpp
+++ b/examples/opiebluez/oblueztest/main.cpp
@@ -1,23 +1,34 @@
 #include <opie2/odebug.h>
 #include <opie2/obluetooth.h>
 
 using namespace Opie::Core;
 using namespace Opie::Bluez;
 
 int main( int argc, char** argv )
 {
     OBluetooth* sys = OBluetooth::instance();
-
     OBluetooth::InterfaceIterator it = sys->iterator();
 
     while( it.current() )
     {
         odebug << "APP: Bluetooth host controller interface '" << it.current()->name() << "' has MAC '" << it.current()->macAddress() << "'" << oendl;
-        odebug << "APP: Interface is " << ( it.current()->isUp() ? "UP" : "DOWN" ) << ". Trying to toggle state..." << oendl;
-        it.current()->setUp( !it.current()->isUp() );
         odebug << "APP: Interface is " << ( it.current()->isUp() ? "UP" : "DOWN" ) << "." << oendl;
+        //odebug << "APP: Trying to toggle state..." << oendl;
+        //it.current()->setUp( !it.current()->isUp() );
+        //odebug << "APP: Interface is " << ( it.current()->isUp() ? "UP" : "DOWN" ) << "." << oendl;
+
+        odebug << "APP: scanning..." << oendl;
+
+        OBluetoothInterface::DeviceIterator devit = it.current()->neighbourhood();
+        while( devit.current() )
+        {
+            odebug << "APP: Neighbourhood '" << devit.current()->name() << "' has MAC '" << devit.current()->macAddress() << "'" << oendl;
+            odebug << "APP: Neighbourhood '" << devit.current()->name() << "' has class '" << devit.current()->deviceClass() << "'" << oendl;
+            ++devit;
+        }
+
         ++it;
     }
     return 0;
 }
 
diff --git a/libopie2/opiebluez/obluetooth.cpp b/libopie2/opiebluez/obluetooth.cpp
index e0ba0ec..80f4bfc 100644
--- a/libopie2/opiebluez/obluetooth.cpp
+++ b/libopie2/opiebluez/obluetooth.cpp
@@ -184,68 +184,191 @@ bool OBluetoothInterface::setUp( bool b )
         d->reloadInfo();
         return true;
     }
 }
 
 bool OBluetoothInterface::isUp() const
 {
     return hci_test_bit( HCI_UP, &d->devinfo.flags );
 }
 
 OBluetoothInterface::DeviceIterator OBluetoothInterface::neighbourhood()
 {
     _devices.clear();
     struct hci_inquiry_req* ir;
     int nrsp = 255;
 
     char* mybuffer = static_cast<char*>( malloc( sizeof( *ir ) + ( sizeof( inquiry_info ) * (nrsp) ) ) );
     assert( mybuffer );
 
     ir = (struct hci_inquiry_req*) mybuffer;
     memset( ir, 0, sizeof( *ir ) + ( sizeof( inquiry_info ) * (nrsp) ) );
 
     ir->dev_id  = d->devinfo.dev_id;
     ir->num_rsp = nrsp;
-    ir->length  = 8;
+    ir->length  = 8; // 10 seconds
     ir->flags   = 0;
-    ir->lap[0] = 0x33;
+    ir->lap[0] = 0x33; // GIAC
     ir->lap[1] = 0x8b;
     ir->lap[2] = 0x9e;
 
     int result = ::ioctl( d->ctlfd, HCIINQUIRY, mybuffer );
     if ( result == -1 )
     {
         owarn << "OBluetoothInterface::neighbourhood() - can't issue HCIINQUIRY (" << strerror( errno ) << ")" << oendl;
         return DeviceIterator( _devices );
     }
 
-    for( int i = 0; i < ir->num_rsp; ++i )
+    inquiry_info* ii = (inquiry_info*)( ir+1 );
+
+    for ( int i = 0; i < ir->num_rsp; ++i )
     {
-        odebug << "found a device" << oendl;
+        OBluetoothDevice* dev = new OBluetoothDevice( this, 0, ii );
+        _devices.insert( dev->macAddress(), dev );
+        ++ii;
     }
 
     return DeviceIterator( _devices );
 }
 
-
 /*======================================================================================
  * OBluetoothDevice
  *======================================================================================*/
 
-OBluetoothDevice::OBluetoothDevice( QObject* parent, const char* name )
+class OBluetoothDevice::Private
+{
+  public:
+    Private( inquiry_info* ii )
+    {
+        ::memcpy( &inqinfo, ii, sizeof(inquiry_info) );
+    }
+    inquiry_info inqinfo;
+};
+
+OBluetoothDevice::OBluetoothDevice( QObject* parent, const char* name, void* inqinfo )
                  :QObject( parent, name )
 {
     odebug << "OBluetoothDevice::OBluetoothDevice() - '" << name << "'" << oendl;
+    d = new OBluetoothDevice::Private( (inquiry_info*) inqinfo );
 }
 
 OBluetoothDevice::~OBluetoothDevice()
 {
     odebug << "OBluetoothDevice::~OBluetoothDevice()" << oendl;
 }
 
 QString OBluetoothDevice::macAddress() const
 {
-    return "N/A";
+    return QString().sprintf( "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
+    d->inqinfo.bdaddr.b[5],
+    d->inqinfo.bdaddr.b[4],
+    d->inqinfo.bdaddr.b[3],
+    d->inqinfo.bdaddr.b[2],
+    d->inqinfo.bdaddr.b[1],
+    d->inqinfo.bdaddr.b[0] );
+}
+
+QString OBluetoothDevice::deviceClass() const
+{
+    int maj = d->inqinfo.dev_class[1] & 0x1f;
+    int min = d->inqinfo.dev_class[0] >> 2;
+
+    QString major = QString( "Unknown(%1)" ).arg( maj );
+    QString minor = QString( "Unknown(%1)" ).arg( min );
+
+    switch ( maj )
+    {
+        case 0: major = "Miscellaneous";
+        break;
+
+        case 1: major = "Computer";
+        switch ( min )
+        {
+            case 0: minor = "Uncategorized";
+            case 1: minor = "Desktop workstation";
+            case 2: minor = "Server";
+            case 3: minor = "Laptop";
+            case 4: minor = "Handheld";
+            case 5: minor = "Palm";
+            case 6: minor = "Wearable";
+        }
+        break;
+
+        case 2: major = "Phone";
+        switch ( min )
+        {
+            case 0: minor = "Uncategorized"; break;
+            case 1: minor = "Cellular"; break;
+            case 2: minor = "Cordless"; break;
+            case 3: minor = "Smart phone"; break;
+            case 4: minor = "Wired modem or voice gateway"; break;
+            case 5: minor = "Common ISDN Access"; break;
+            case 6: minor = "Sim Card Reader"; break;
+        }
+        break;
+
+        case 3: major = "LAN Access";
+        break;
+
+        case 4: major = "Audio/Video";
+        switch ( min )
+        {
+            case 0: minor = "Uncategorized"; break;
+            case 1: minor = "Device conforms to the Headset profile"; break;
+            case 2: minor = "Hands-free"; break;
+            case 3: minor = "Reserved(3)"; break;
+            case 4: minor = "Microphone"; break;
+            case 5: minor = "Loudspeaker"; break;
+            case 6: minor = "Headphones"; break;
+            case 7: minor = "Portable Audio"; break;
+            case 8: minor = "Car Audio"; break;
+            case 9: minor = "Set-top box"; break;
+            case 10: minor = "HiFi Audio Device"; break;
+            case 11: minor = "VCR"; break;
+            case 12: minor = "Video Camera"; break;
+            case 13: minor = "Camcorder"; break;
+            case 14: minor = "Video Monitor"; break;
+            case 15: minor = "Video Display and Loudspeaker"; break;
+            case 16: minor = "Video Conferencing"; break;
+            case 17: minor = "Reserved(17)"; break;
+            case 18: minor = "Gaming/Toy"; break;
+        }
+        break;
+
+        case 5: major = "Peripheral";
+        switch ( min )
+        {
+            case 16: minor = "Keyboard"; break;
+            case 32: minor = "Pointing Device"; break;
+            case 48: minor = "Keyboard and Pointing Device"; break;
+        }
+        break;
+
+        case 6: major = "Imaging";
+        if (min & 4) minor = "Display";
+        else if (min & 8) minor = "Camera";
+        else if (min & 16) minor = "Scanner";
+        else if (min & 32) minor = "Printer";
+        break;
+
+        case 63: major = "Uncategorized";
+        break;
+    }
+
+    return QString( "%1:%2" ).arg( major ).arg( minor );
 }
 
+QString OBluetoothDevice::getName()
+{
+    /* FIXME: Uahhh, this gets ugly.
+    The BlueZ kernel interface seems to be very badly (if at all) documented.
+    All people are assuming that you use libbluetooth to talk to that stack.
+    However since libbluetooth is GPL, we can't do that :/
+    Guess, we are stuck here until someone finds time and/or motivation to look
+    into that and create some easy-to-understand examples for how to talk
+    directly to the BlueZ kernel interface.
+    */
+};
+
+
 }
 }
diff --git a/libopie2/opiebluez/obluetooth.h b/libopie2/opiebluez/obluetooth.h
index ee4a90d..fa3d2c1 100644
--- a/libopie2/opiebluez/obluetooth.h
+++ b/libopie2/opiebluez/obluetooth.h
@@ -109,79 +109,91 @@ class OBluetooth : public QObject
  * Linux ioctls are hidden under a convenient high-level interface.
  * @warning Most of the setting methods contained in this class require the appropriate
  * process permissions to work.
  *
  * @author Michael 'Mickey' Lauer <mickey@vanille.de>
  */
 class OBluetoothInterface : public QObject
 {
   Q_OBJECT
   public:
     typedef QDict<OBluetoothDevice> DeviceMap;
     typedef QDictIterator<OBluetoothDevice> DeviceIterator;
 
   public:
     /**
      * Constructor. Normally you don't create @ref OBluetoothInterface objects yourself,
      * but access them via @ref OBluetooth::interface().
      */
     OBluetoothInterface( QObject* parent, const char* name, void* devinfo, int ctlfd );
     /**
      * Destructor.
      */
     virtual ~OBluetoothInterface();
     /**
-     * @return the MAC address of the interfaces
+     * @return the MAC address of the interface.
      */
     QString macAddress() const;
     /**
      * Setting an interface to up enables it to receive packets.
      */
     bool setUp( bool );
     /**
      * @returns true if the interface is up.
      */
     bool isUp() const;
     /**
-      * @returns an iterator usable for iterating through the devices in range
+      * @returns an iterator usable for iterating through the devices in range.
       */
     DeviceIterator neighbourhood();
 
   private:
     DeviceMap _devices;
     class Private;
     Private *d;
 };
 
 /*======================================================================================
  * OBluetoothDevice
  *======================================================================================*/
 
 /**
  * @brief An bluetooth (remote) device abstraction.
  *
  * This class resembles a (remote) bluetooth device.
  * @author Michael 'Mickey' Lauer <mickey@vanille.de>
  */
 class OBluetoothDevice : public QObject
 {
   Q_OBJECT
 
   public:
     /**
      * Constructor.
      */
-    OBluetoothDevice( QObject* parent, const char* name );
+    OBluetoothDevice( QObject* parent, const char* name, void* inqinfo );
     /**
      * Destructor.
      */
     virtual ~OBluetoothDevice();
     /**
-      * @returns the MAC address of the device's interface
+      * @returns the MAC address of the device's interface.
       */
     QString macAddress() const;
+    /**
+     * @returns the class of device.
+     */
+    QString deviceClass() const;
+    /**
+     * @returns the device name.
+     */
+    QString getName();
+
+  private:
+    class Private;
+    Private *d;
 };
 
 }
 }
 #endif