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
@@ -16,236 +16,359 @@
     : ..    .:,     . . .    without even the implied warranty of
     =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
   _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU
 ..}^=.=       =       ;      Library General Public License for more
 ++=   -.     .`     .:       details.
  :     =  ...= . :.=-
  -.   .:....=;==+<;          You should have received a copy of the GNU
   -_. . .   )=.  =           Library General Public License along with
     --        :-=`           this library; see the file COPYING.LIB.
                              If not, write to the Free Software Foundation,
                              Inc., 59 Temple Place - Suite 330,
                              Boston, MA 02111-1307, USA.
 */
 
 #include "obluetooth.h"
 
 /* OPIE */
 #include <opie2/odebug.h>
 using namespace Opie::Core;
 
 /* STD */
 #include <bluetooth/bluetooth.h>
 #include <bluetooth/hci.h>
 #include <bluetooth/hci_lib.h>
 #include <assert.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 
 namespace Opie {
 namespace Bluez {
 
 /*======================================================================================
  * OBluetooth
  *======================================================================================*/
 
 OBluetooth* OBluetooth::_instance = 0;
 
 OBluetooth::OBluetooth()
 {
     synchronize();
 }
 
 OBluetooth* OBluetooth::instance()
 {
     if ( !_instance ) _instance = new OBluetooth();
     return _instance;
 }
 
 OBluetooth::InterfaceIterator OBluetooth::iterator() const
 {
     return OBluetooth::InterfaceIterator( _interfaces );
 }
 
 int OBluetooth::count() const
 {
     return _interfaces.count();
 }
 
 OBluetoothInterface* OBluetooth::interface( const QString& iface ) const
 {
     return _interfaces[iface];
 }
 
 void OBluetooth::synchronize()
 {
     odebug << "OBluetooth::synchronize() - gathering available HCI devices" << oendl;
     _interfaces.clear();
 
     _fd = ::socket( AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI );
     if ( _fd == -1 )
     {
         owarn << "OBluetooth::synchronize() - can't open HCI control socket (" << strerror( errno ) << ")" << oendl;
         return;
     }
 
     struct hci_dev_list_req *dl;
     struct hci_dev_req *dr;
     struct hci_dev_info di;
 
     if (!(dl = (struct hci_dev_list_req*)malloc(HCI_MAX_DEV * sizeof(struct hci_dev_req) + sizeof(uint16_t))))
     {
         ofatal << "OBluetooth::synchronize() - can't allocate memory for HCI request" << oendl;
         return;
     }
 
     dl->dev_num = HCI_MAX_DEV;
     dr = dl->dev_req;
 
     if (::ioctl( _fd, HCIGETDEVLIST, (void *) dl) == -1)
     {
         owarn << "OBluetooth::synchronize() - can't complete HCIGETDEVLIST (" << strerror( errno ) << ")" << oendl;
         return;
     }
 
     for ( int i = 0; i < dl->dev_num; ++i )
     {
         di.dev_id = ( dr + i )->dev_id;
         if ( ::ioctl( _fd, HCIGETDEVINFO, (void *) &di ) == -1 )
         {
             owarn << "OBluetooth::synchronize() - can't issue HCIGETDEVINFO on device " << i << " (" << strerror( errno ) << ") - skipping that device. " << oendl;
             continue;
         }
         odebug << "OBluetooth::synchronize() - found device #" << di.dev_id << oendl;
         _interfaces.insert( di.name, new OBluetoothInterface( this, di.name, (void*) &di, _fd ) );
     }
 }
 
 /*======================================================================================
  * OBluetoothInterface
  *======================================================================================*/
 
 class OBluetoothInterface::Private
 {
   public:
     Private( struct hci_dev_info* di, int fd )
     {
         ::memcpy( &devinfo, di, sizeof(struct hci_dev_info) );
         ctlfd = fd;
     }
     void reloadInfo()
     {
         int result = ::ioctl( ctlfd, HCIGETDEVINFO, (void *) &devinfo );
         if ( result == -1 )
         {
             owarn << "OBluetoothInterface::Private - can't reload device info (" << strerror( errno ) << ")" << oendl;
         }
     }
     struct hci_dev_info devinfo;
     int ctlfd;
 };
 
 OBluetoothInterface::OBluetoothInterface( QObject* parent, const char* name, void* devinfo, int ctlfd )
                     :QObject( parent, name )
 {
     d = new OBluetoothInterface::Private( (struct hci_dev_info*) devinfo, ctlfd );
 }
 
 OBluetoothInterface::~OBluetoothInterface()
 {
 }
 
 QString OBluetoothInterface::macAddress() const
 {
     return QString().sprintf( "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
                               d->devinfo.bdaddr.b[5],
                               d->devinfo.bdaddr.b[4],
                               d->devinfo.bdaddr.b[3],
                               d->devinfo.bdaddr.b[2],
                               d->devinfo.bdaddr.b[1],
                               d->devinfo.bdaddr.b[0] );
 }
 
 bool OBluetoothInterface::setUp( bool b )
 {
     int cmd = b ? HCIDEVUP : HCIDEVDOWN;
     int result = ::ioctl( d->ctlfd, cmd, d->devinfo.dev_id );
     if ( result == -1 && errno != EALREADY )
     {
         owarn << "OBluetoothInterface::setUp( " << b << " ) - couldn't change interface state (" << strerror( errno ) << ")" << oendl;
         return false;
     }
     else
     {
         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
@@ -1,187 +1,199 @@
 /*
                              This file is part of the Opie Project
                              Copyright (C) 2005 Michael 'Mickey' Lauer <mickey@Vanille.de>
               =.             Copyright (C) The Opie Team <opie-devel@handhelds.org>
             .=l.
            .>+-=
  _;:,     .>    :=|.         This program is free software; you can
 .> <`_,   >  .   <=          redistribute it and/or  modify it under
 :`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
 .="- .-=="i,     .._         License as published by the Free Software
  - .   .-<_>     .<>         Foundation; version 2 of the License.
      ._= =}       :
     .%`+i>       _;_.
     .i_,=:_.      -<s.       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
 ..}^=.=       =       ;      Library General Public License for more
 ++=   -.     .`     .:       details.
  :     =  ...= . :.=-
  -.   .:....=;==+<;          You should have received a copy of the GNU
   -_. . .   )=.  =           Library General Public License along with
     --        :-=`           this library; see the file COPYING.LIB.
                              If not, write to the Free Software Foundation,
                              Inc., 59 Temple Place - Suite 330,
                              Boston, MA 02111-1307, USA.
 */
 
 #ifndef OBLUETOOTH_H
 #define OBLUETOOTH_H
 
 #include <qobject.h>
 #include <qdict.h>
 
 namespace Opie {
 namespace Bluez {
 
 class OBluetoothInterface;
 class OBluetoothDevice;
 
 /**
  * @brief A container class for all bluetooth interfaces
  *
  * This class provides access to all available bluetooth interfaces of your computer.
  *
  * @author Michael 'Mickey' Lauer <mickey@vanille.de>
  */
 class OBluetooth : public QObject
 {
   Q_OBJECT
 
   public:
     typedef QDict<OBluetoothInterface> InterfaceMap;
     typedef QDictIterator<OBluetoothInterface> InterfaceIterator;
 
   public:
     /**
      * @returns the number of available interfaces
      */
     int count() const;
     /**
      * @returns a pointer to the (one and only) @ref OBluetooth instance.
      */
     static OBluetooth* instance();
     /**
      * @returns an iterator usable for iterating through all network interfaces.
      */
     InterfaceIterator iterator() const;
     /**
      * @returns true, if the @a interface is present.
      */
     bool isPresent( const char* interface ) const;
     /**
      * @returns true, if the @a interface supports the wireless extension protocol.
      */
     bool isWirelessInterface( const char* interface ) const;
     /**
      * @returns a pointer to the @ref OBluetoothInterface object for the specified @a interface or 0, if not found.
      * @see OBluetoothInterface
      */
     OBluetoothInterface* interface( const QString& interface ) const;
     /**
      * @internal Rebuild the internal interface database
      * @note Sometimes it might be useful to call this from client code,
      * e.g. after issuing a cardctl insert
      */
     void synchronize();
 
   protected:
     OBluetooth();
 
   private:
     static OBluetooth* _instance;
     InterfaceMap _interfaces;
     class OBluetoothPrivate;
     OBluetoothPrivate *d;
     int _fd;
 };
 
 /*======================================================================================
  * OBluetoothInterface
  *======================================================================================*/
 
 /**
  * @brief An bluetooth interface wrapper.
  *
  * This class provides a wrapper for a bluetooth HCI device. All the cumbersome details of
  * 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