us_license_t.cpp

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#include <QtCore>

#include "us_license_t.h"
#include "us_settings.h"
#include "us_defines.h"


int US_License_t::isValid( QString& ErrorMessage, const QStringList& newLicense )
{
  QStringList license;

  if ( newLicense.size() == 0 )
    license = US_Settings::license();
  else 
    license = newLicense;
  
  if ( license.size() < 12 )
  {
    ErrorMessage =  QString( qApp->translate( "UltraScan", 
        "You have not yet registered your copy of UltraScan.\n"
        "Click on 'Register' to register UltraScan\n"
        "for the %1 platform and %2 Operating System." ) )
        .arg( TITLE, OS_TITLE );
    
    return Missing;
  }

  QString lastname   = license.value(  0 );
  QString firstname  = license.value(  1 );
  QString company    = license.value(  2 );
  QString address    = license.value(  3 );
  QString city       = license.value(  4 );
  QString state      = license.value(  5 );
  QString zip        = license.value(  6 );
  QString phone      = license.value(  7 );
  QString email      = license.value(  8 );
  QString platform   = license.value(  9 );
  QString opSys      = license.value( 10 );
  QString version    = license.value( 11 );

  QString validation = "";
  QString expiration = "";

  if ( license.size() > 13 )
  {
    validation = license.value( 12 );
    expiration = license.value( 13 );
  }

  if ( platform != PLATFORM ) 
  {
    ErrorMessage =  QString( qApp->translate( "UltraScan", 
        "You are running UltraScan on a %1 platform,\n"
        "but your registration is issued for the %2 platform\n\n" 
        "You will have to update your registration before\n"
        "proceeding. Click on 'Register' to start the process\n"
        "for the %3 platform." ) )
        .arg( TITLE, platform, TITLE );

    return BadPlatform;
  }

  if ( opSys != OS ) 
  {
    ErrorMessage = QString( qApp->translate( "UltraScan", 
          "You are running UltraScan with a %1 operating system,\n"
          "but your registration is issued for the %2 operating system\n\n"
          "You will have to update your registration  before\n"
          "proceeding. Click on 'Register' to start the process\n"
          "for a %3 operating system." ) )
          .arg( OS_TITLE, opSys, OS_TITLE );

    return BadOS;
  }

  if ( license.size() == 12 )
  {
    ErrorMessage = QString( qApp->translate( "UltraScan", 
             "Your UltraScan registration is pending.\n"
             "Please respond to the email sent to complete the process." ) );

    return Pending;
  }

  QString license_string = expiration + email;
  QString calculation = "";
  QString str;
  for ( int i = 0; i < license_string.size(); i++ )
    calculation += str.sprintf( "%X", license_string[ i ].unicode() );

  calculation.truncate(24);

  if ( calculation != validation )
  { 
    ErrorMessage = qApp->translate( "UltraScan", 
           "The registration is invalid.\n"
           "You will have to update your registration before\n"
           "proceeding. Click on 'Register' to begin the registration\n" )
            + "\n" + validation + "\n" + calculation;

    return Invalid;
  }

  if ( QDate::currentDate() > QDate::fromString( expiration ) )
  {
    ErrorMessage = qApp->translate( "UltraScan", 
           "The registration is expired.\n"
           "You will have to update your registration before\n"
           "proceeding. Click on 'Update / Renew' to continue.\n" );

    return Expired;
  }

  return OK;
}