licence of ea

[Loua Manga Arnaud]

Hello, I am a robot programmer and I would like to protect my EA with a license. that is to say that each license will be for only one computer ..

how to do it ?

[Fernando Carreiro]

Loua Manga Arnaud: Hello, I am a robot programmer and I would like to protect my EA with a license. that is to say that each license will be for only one computer .. how to do it ?

Forum on trading, automated trading systems and testing trading strategies

EA limit code

Fernando Carreiro, 2017.09.10 22:17

Here is a sample of my own code that I use, but it is up to you to implement properly. I'm not offering any support on it. It is up to you to do the necessary research and learning.

//+------------------------------------------------------------------------------------+
// Initialisation Event Function
//+------------------------------------------------------------------------------------+
int OnInit()
{
   // Check Licensing Restrictions
   if( boolRestrictOnInit() ) return( INIT_FAILED );

   // ...

   return( INIT_SUCCEEDED );  // Initialisation complete
}
//+------------------------------------------------------------------------------------+
// Tick Event Function
//+------------------------------------------------------------------------------------+
void OnTick()
{
   // Check Licensing Restrictions
   if( boolRestrictOnTick() ) return;
   
   /// ...
}
//+------------------------------------------------------------------------------------+
// Function to Test Restrictions during Initialisation
//+------------------------------------------------------------------------------------+
bool boolRestrictOnInit()
{
   boolRestrictions =
      boolRestrictExpiration     ||
      boolRestrictAccountNumber  ||
      boolRestrictAccountName    ||
      boolRestrictAccountServer  ||
      boolRestrictAccountCompany ||
      boolRestrictDemoAccount    ||
      boolRestrictSymbols;

   if( boolRestrictions )
   {
      boolRestrictionsUnverified = true;

      if( (bool) TerminalInfoInteger( TERMINAL_CONNECTED ) )
      {
         long longAccountNumber = AccountInfoInteger( ACCOUNT_LOGIN );
         if( longAccountNumber > 0 )
         {
            if( boolRestrictAccountNumber )
               { if( longAccountNumber                        != longRestrictAccountNumber )
                  { return( boolRestrictAlert() ); } }
            if( boolRestrictAccountName )
               { if( AccountInfoString( ACCOUNT_NAME )        != strRestrictAccountName    )
                  { return( boolRestrictAlert() ); } }
            if( boolRestrictAccountServer )
               { if( AccountInfoString( ACCOUNT_SERVER )      != strRestrictAccountServer  )
                  { return( boolRestrictAlert() ); } }
            if( boolRestrictAccountCompany )
               { if( AccountInfoString( ACCOUNT_COMPANY )     != strRestrictAccountCompany )
                  { return( boolRestrictAlert() ); } }
            if( boolRestrictDemoAccount )
               { if( AccountInfoInteger( ACCOUNT_TRADE_MODE ) != ACCOUNT_TRADE_MODE_DEMO   )
                  { return( boolRestrictAlert() ); } }
            if( boolRestrictSymbols() )
               { return( boolRestrictAlert() ); }

            boolRestrictionsUnverified = false;
         }
      }
   }
   return( false );
}
//+------------------------------------------------------------------------------------+
// Function to Test Variations of Restricted Symbols
//+------------------------------------------------------------------------------------+
bool boolRestrictSymbols()
{
   if( boolRestrictSymbols )
   {
      int intSymbolCount = ArraySize( strRestrictSymbols );
      if( intSymbolCount == 0 ) return( false );
      for( int i = 0; i < intSymbolCount; i++ )
      {
         if( StringFind( _Symbol, strRestrictSymbols[i] ) != WRONG_VALUE ) return( false );
         int
            intLen  = StringLen( strRestrictSymbols[i] ),
            intHalf = intLen / 2;
         string
            strLeft  = StringSubstr( strRestrictSymbols[i], 0, intHalf ),
            strRight = StringSubstr( strRestrictSymbols[i], intHalf, intLen - intHalf );
         if( ( StringFind( _Symbol, strLeft  ) != WRONG_VALUE ) &&
             ( StringFind( _Symbol, strRight ) != WRONG_VALUE )    )
            return( false );
      }
      return( true );
   }
   return( false );
}
//+------------------------------------------------------------------------------------+
// Function to Test Expiration during Tick Events
//+------------------------------------------------------------------------------------+
bool boolRestrictOnTick()
{
   if( boolRestrictions )
   {
      if( boolRestrictionsUnverified )
         return( boolRestrictOnInit() );
      if( boolRestrictExpiration && ( TimeCurrent() >= dtRestrictExpiration ) )
         return( boolRestrictAlert()  );
   }
   return( false );
}
// Function to Alert User of Licensing Restrictions and Remove Code from Execution
bool boolRestrictAlert()
{
   if( boolRestrictAlert )
      MessageBox( strRestrictAlertMessage, strRestrictAlertCaption, MB_ICONERROR );
   ExpertRemove();
   return( true );
}
//+------------------------------------------------------------------------------------+
//      Variables for Handling of Licensing Restrictions
//+------------------------------------------------------------------------------------+
bool
   boolRestrictExpiration     = false, // Set to true, to use an Experation Date
   boolRestrictAccountNumber  = false, // Set to true for Restricting by Account Number
   boolRestrictAccountName    = false, // Set to true for Restricting by Account Name
   boolRestrictAccountServer  = false, // Set to true for Restricting by Account Server
   boolRestrictAccountCompany = false, // Set to true for Restricting by Account Company
   boolRestrictDemoAccount    = false, // Set to true, to only allow Demo Accounts
   boolRestrictSymbols        = false, // Set to true, to only allow certain Symbols
   boolRestrictAlert          = true,  // Display Alert Message when Restrictions apply
   boolRestrictionsUnverified = false, // DO NOT CHANGE. For internal use only!
   boolRestrictions           = false; // DO NOT CHANGE. For internal use only!
datetime
   dtRestrictExpiration       = D'2017.03.31';  // Restricted by Expration Date
long
   longRestrictAccountNumber  = 123456789;      // Restricted by Account Number
string
   strRestrictAccountName     = "Client Name",  // Restricted by Account Name
   strRestrictAccountServer   = "Server Name",  // Restricted by Account Server
   strRestrictAccountCompany  = "Company Name", // Restricted by Account Company
   strRestrictSymbols[]       = { "EURUSD", "GBPJPY", "NZDCAD" }, // Restricted Symbols
   strRestrictAlertCaption    = "Restrictions", // Alert Message Box Caption
   strRestrictAlertMessage    =
      "ATTENTION! Due to Licensing Restrictions, code execution has been blocked!";
      // Message to be used when Restrictions have been detected
//+------------------------------------------------------------------------------------+

[Ahmet Metin Yilmaz]

Fernando,

he asked 'each license will be for only one computer'

all them just only about broker and symbols and accounts etc

[Marco vd Heijden]

Hello please read here: https://www.mql5.com/en/articles/1572