Use snprintf to just be sure that we don't go over the buffer limit

1 files changed, 1 insertions, 1 deletions

diff --git a/libopie2/opiecore/device/odevice_simpad.cpp b/libopie2/opiecore/device/odevice_simpad.cpp
index 76f03a0..e62ea18 100644
--- a/libopie2/opiecore/device/odevice_simpad.cpp
+++ b/libopie2/opiecore/device/odevice_simpad.cpp
@@ -230,141 +230,141 @@ bool SIMpad::setLedState ( OLed l, OLedState st )
     static int fd = ::open ( SIMPAD_BOARDCONTROL, O_RDWR | O_NONBLOCK );
 
             /*TODO Implement this like that:
             read from cs3
             && with SIMPAD_LED2_ON
             write to cs3 */
                 m_leds [0] = st;
                 return true;
             }
         }
     }
 
 #endif
     return false;
 }
 
 
 bool SIMpad::filter ( int /*unicode*/, int keycode, int modifiers, bool isPress, bool autoRepeat )
 {
     //TODO
     return false;
 }
 
 void SIMpad::timerEvent ( QTimerEvent * )
 {
     killTimer ( m_power_timer );
     m_power_timer = 0;
     QWSServer::sendKeyEvent ( -1, HardKey_Backlight, 0, true, false );
     QWSServer::sendKeyEvent ( -1, HardKey_Backlight, 0, false, false );
 }
 
 
 void SIMpad::playAlarmSound()
 {
 #ifndef QT_NO_SOUND
     static Sound snd ( "alarm" );
     int fd;
     int vol;
     bool vol_reset = false;
 
     if (( fd = ::open ( "/dev/sound/mixer", O_RDWR )) >= 0 ) {
         if ( ::ioctl ( fd, MIXER_READ( 0 ), &vol ) >= 0 ) {
             Config cfg ( "qpe" );
             cfg. setGroup ( "Volume" );
 
             int volalarm = cfg. readNumEntry ( "AlarmPercent", 50 );
             if ( volalarm < 0 )
                 volalarm = 0;
             else if ( volalarm > 100 )
                 volalarm = 100;
             volalarm |= ( volalarm << 8 );
 
             if ( ::ioctl ( fd, MIXER_WRITE( 0 ), &volalarm ) >= 0 )
                 vol_reset = true;
         }
     }
 
     snd. play();
     while ( !snd. isFinished())
         qApp->processEvents();
 
     if ( fd >= 0 ) {
         if ( vol_reset )
             ::ioctl ( fd, MIXER_WRITE( 0 ), &vol );
         ::close ( fd );
     }
 #endif
 }
 
 
 bool SIMpad::suspend() // Must override because SIMpad does NOT have apm
 {
     qDebug( "ODevice for SIMpad: suspend()" );
     if ( !isQWS( ) ) // only qwsserver is allowed to suspend
         return false;
 
     bool res = false;
     ODevice::sendSuspendmsg();
 
     struct timeval tvs, tvn;
     ::gettimeofday ( &tvs, 0 );
 
     ::sync(); // flush fs caches
     res = ( ::system ( "cat /dev/fb/0 >/tmp/.buffer; echo > /proc/sys/pm/suspend; cat /tmp/.buffer >/dev/fb/0" ) == 0 ); //TODO make better :)
 
     return res;
 }
 
 
 bool SIMpad::setSoftSuspend ( bool soft )
 {
     qDebug( "ODevice for SIMpad: UNHANDLED setSoftSuspend(%s)", soft? "on" : "off" );
     return false;
 }
 
 
 bool SIMpad::setDisplayStatus ( bool on )
 {
     qDebug( "ODevice for SIMpad: setDisplayStatus(%s)", on? "on" : "off" );
 
     bool res = false;
     int fd;
 
     QString cmdline = QString().sprintf( "echo %s > /proc/cs3", on ? "0xd41a" : "0xd40a" ); //TODO make better :)
 
     res = ( ::system( (const char*) cmdline ) == 0 );
 
     return res;
 }
 
 
 bool SIMpad::setDisplayBrightness ( int bright )
 {
     qDebug( "ODevice for SIMpad: setDisplayBrightness( %d )", bright );
     bool res = false;
     int fd;
 
     if ( bright > 255 )
         bright = 255;
     if ( bright < 1 )
         bright = 0;
 
     if (( fd = ::open ( SIMPAD_BACKLIGHT_CONTROL, O_WRONLY )) >= 0 ) {
         int value = 255 - bright;
         const int mask = SIMPAD_BACKLIGHT_MASK;
         value = value << 8;
         value += mask;
         char writeCommand[100];
-        const int count = sprintf( writeCommand, "0x%x\n", value );
+        const int count = snprintf( writeCommand, sizeof(writeCommand), "0x%x\n", value );
         res = ( ::write ( fd, writeCommand, count ) != -1 );
         ::close ( fd );
     }
     return res;
 }
 
 
 int SIMpad::displayBrightnessResolution() const
 {
     return 255; // All SIMpad models share the same display
 }