Développement BasicCard/GamblingCard/GAMBLING.BAS
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Rem Gambling BasicCard Source Code
Rem ------------------------------------------------------------------
Rem Copyright (C) 2002 Didier DONSEZ
Rem ------------------------------------------------------------------
Rem GAMBLING CARD
Rem This file system could be use to store a history file
Dir "\" ' Set the access conditions on the root directory
Write Unlock
End Dir
Option Explicit ' Disable use of undefined variable names
Option Base 0 ' Arrays start at 0
#Include GAMBLING.DEF ' Declarations common to BasicCard and Terminal programs
rem #Include DEALER.KEY
rem #Include ISSUER.KEY
#Include COMMANDS.DEF
#include PReader.def
Declare ApplicationID = ApplicationName$
Disable Encryption &H11
Rem Permanent data
Eeprom Personalised = False
Eeprom Balance As Long
Eeprom PIN As String*4
' Change following line to set your initial master PIN
Eeprom MasterPIN As String*6 = "123456"
Eeprom CustomerName$
Eeprom PINErrors
Eeprom WinningRatio As Long
Rem EEPROM shadow data, to ensure that Balance is always valid
Rem
Rem See "1.4.4 Permanent Data" in the BasicCard manual.
Eeprom ShadowBalance As Long
Eeprom Committed = False
Rem Public data (re-initialised when card is reset)
Public PINVerified = False
Public MasterPINVerified = False
Public Bounds(7) As Long
Public Winnings(7) As Long
Public NumberOfBounds As Byte = 0
Public NumberOfWinnings As Byte = 0
Public isConsistent@ = False
Rem Subroutine declaration
Declare Sub ChangeBalance (NewBalance As Long)
Declare Sub CheckConsistency()
Declare Sub CheckAlgorithm()
Rem Start-up code: clean up if an EEPROM write was interrupted
Rem
Rem See "1.4.4 Permanent Data" in the BasicCard manual.
If Committed Then
Balance = ShadowBalance
Committed = False
End If
Command &H80 &H00 PersonaliseCard (Amount As Long, NewPIN As String*4, Name$)
rem Call CheckAlgorithm()
rem If KeyNumber <> 0 Then SW1SW2 = swIssuingKeyRequired : Exit
Personalised = False ' In case power is lost in the next three statements
Balance = Amount
CustomerName$ = Name$
PIN = NewPIN
Personalised = True
End Command
Command &H80 &H02 VerifyPIN (TestPIN As String*4)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
rem If KeyNumber <> 0 And PINErrors > MaxPINErrors Then _
If PINErrors > MaxPINErrors Then SW1SW2 = swPINErrorsExceeded : Exit
If TestPIN = PIN Then PINErrors = 0 : PINVerified = True : Exit
PINErrors = PINErrors + 1
SW1SW2 = swInvalidPIN
PINVerified = False
End Command
Command &H80 &H04 IncreaseAmount (Diff As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not (PINVerified OR MasterPINVerified) Then SW1SW2 = swPINRequired : Exit
Call ChangeBalance (Balance + Diff)
End Command
Command &H80 &H06 DecreaseAmount (Diff As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not (PINVerified OR MasterPINVerified) Then SW1SW2 = swPINRequired : Exit
If Diff > Balance Then SW1SW2 = swInsufficientFunds : Exit
Call ChangeBalance (Balance - Diff)
End Command
Command &H80 &H08 ChangePIN (NewPIN As String*4)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not (PINVerified OR MasterPINVerified) Then SW1SW2 = swPINRequired : Exit
PIN = NewPIN
End Command
Command &H80 &H0A GetCardData (Amount As Long, PINCount, Name$)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
Amount = Balance
PINCount = MaxPINErrors - PINErrors
Name$ = CustomerName$
End Command
Command &H80 &H20 GetBalance (Amount As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
Amount = Balance
End Command
Command &H80 &H22 Debit (Amount As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not (PINVerified OR MasterPINVerified) Then SW1SW2 = swPINRequired : Exit
If Amount > Balance Then SW1SW2 = swInsufficientFunds : Exit
Call ChangeBalance (Balance - Amount)
Amount=Balance ' new balance is returned in amount param
End Command
Command &H80 &H24 Credit (Amount As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not (PINVerified OR MasterPINVerified) Then SW1SW2 = swPINRequired : Exit
Call ChangeBalance (Balance + Amount)
Amount=Balance ' new balance is returned in amount param
End Command
Command &H80 &H26 Bet(betAmount As Long)
Private b As Byte
Private r As Long
Private winning As Long
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not (PINVerified OR MasterPINVerified) Then SW1SW2 = swPINRequired : Exit
If betAmount > Balance Then SW1SW2 = swInsufficientFunds : Exit
rem check if Bounds and Winnings are consistent
Call CheckConsistency()
rem next random to decide between bank and (win or loss)
r=Abs(Rnd) Mod 100
if r<WinningRatio then
rem next random to decide between win and loss
r=Abs(Rnd) Mod Bounds(NumberOfBounds-1)
rem win or lost in the winnings/bounds
rem b is the bound
for b=0 to (NumberOfBounds-1)
If r<Bounds(b) Then
Exit For
End If
Next b
winning=Winnings(b)*betAmount
rem winning may zero or positive (even negative)
Else
rem for the bank
winning=0
End If
Call ChangeBalance (Balance - betAmount + winning)
rem return the winning
betAmount=winning
End Command
Command &H80 &H30 SetWinRatio(wr As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
if wr>100 Then SW1SW2 = swInconsistentWinningRatio : Exit
WinningRatio=wr
End Command
Command &H80 &H32 GetWinRatio(wr As Long)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
wr=WinningRatio
End Command
Command &H80 &H34 GetBounds(numbounds@, bound0&,bound1&,bound2&,bound3&,bound4&,bound5&,bound6&,bound7&,bound8&,bound9&)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
numbounds@=NumberOfBounds
bound0& = Bounds(0)
bound1& = Bounds(1)
bound2& = Bounds(2)
bound3& = Bounds(3)
bound4& = Bounds(4)
bound5& = Bounds(5)
bound6& = Bounds(6)
End Command
Command &H80 &H36 SetBounds(numbounds@, bound0&,bound1&,bound2&,bound3&,bound4&,bound5&,bound6&,bound7&,bound8&,bound9&)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
isConsistent@ = False ' Bounds and Winnings must be checked before betting
NumberOfBounds = numbounds@
Bounds(0) = bound0&
Bounds(1) = bound1&
Bounds(2) = bound2&
Bounds(3) = bound3&
Bounds(4) = bound4&
Bounds(5) = bound5&
Bounds(6) = bound6&
End Command
Command &H80 &H38 GetWinnings(numwinnings@, winning0&,winning1&,winning2&,winning3&,winning4&,winning5&,winning6&,winning7&,winning8&,winning9&)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
numwinnings@=NumberOfWinnings
winning0& = Winnings(0)
winning1& = Winnings(1)
winning2& = Winnings(2)
winning3& = Winnings(3)
winning4& = Winnings(4)
winning5& = Winnings(5)
winning6& = Winnings(6)
End Command
Command &H80 &H3A SetWinnings(numwinnings@, winning0&,winning1&,winning2&,winning3&,winning4&,winning5&,winning6&,winning7&,winning8&,winning9&)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
isConsistent@ = False ' Bounds and Winnings must be checked before betting
NumberOfWinnings = numwinnings@
Winnings(0) = winning0&
Winnings(1) = winning1&
Winnings(2) = winning2&
Winnings(3) = winning3&
Winnings(4) = winning4&
Winnings(5) = winning5&
Winnings(6) = winning6&
End Command
Rem Sub CheckAlgorithm()
Rem
Rem Check that the appropriate encryption algorithm is enabled (&H12
Rem in the Compact BasicCard, &H21 in the Enhanced BasicCard)
Sub CheckAlgorithm()
#IfDef CompactBasicCard
If Algorithm <> &H12 Then SW1SW2 = swEncryptionRequired : Exit
#ElseIfDef EnhancedBasicCard
If Algorithm <> &H21 Then SW1SW2 = swEncryptionRequired : Exit
#Else
If Algorithm <> &H23 Then SW1SW2 = swEncryptionRequired : Exit
#EndIf
End Sub
Rem Sub ChangeBalance (NewBalance As Long)
Rem
Rem Change the Balance variable, guarding against the possibility that
Rem it is left in an inconsistent state by a sudden loss of power.
Rem
Rem See "1.4.3 Permanent Data" in the BasicCard manual.
Sub ChangeBalance (NewBalance As Long)
ShadowBalance = NewBalance
Committed = True
Balance = ShadowBalance
Committed = False
End Sub
Sub CheckConsistency()
Rem check values of Bounds() and Winnings()
Private total&
Private b As Byte
If isConsistent@ = True Then Exit Sub ' check during a previous call
If NumberOfBounds < 2 Then GoTo Problem
If NumberOfWinnings < 2 Then GoTo Problem
If NumberOfWinnings <> NumberOfBounds Then GoTo Problem
For b=0 To (NumberOfBounds-1)
if Bounds(b) < 0 Then GoTo Problem
if Winnings(b) < 0 Then GoTo Problem
Next b
For b=1 To (NumberOfBounds-1)
if Bounds(b) <= Bounds(b-1) Then GoTo Problem
Next b
total&=Bounds(0)*Winnings(0)
For b=1 To (NumberOfBounds-1)
total&= total& + ((Bounds(b)-Bounds(b-1))*Winnings(b))
Next b
If total& > Bounds(NumberOfBounds-1) Then GoTo Problem
rem All checks are passed
isConsistent@ = True
Exit Sub
Problem:
rem isConsistent@ = False
SW1SW2 = swInconsistentBoundsAndWinnings
Exit
End Sub
Command &H80 &H0E ChangeMasterPIN (NewPIN As String*6)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
If Not MasterPINVerified Then SW1SW2 = swPINRequired : Exit
MasterPIN = NewPIN
End Command
REM In opposition to normal PIN we use no PIN count, but
REM issuer key is required instead.
Command &H80 &H0C VerifyMasterPIN (TestPIN As String*6)
If Not Personalised Then SW1SW2 = swNotPersonalised : Exit
rem Call CheckAlgorithm()
rem If KeyNumber <> 0 Then _
rem SW1SW2 = swIssuingKeyRequired : Exit
If TestPIN = MasterPIN Then MasterPINVerified = True : Exit
SW1SW2 = swInvalidPIN
MasterPINVerified = False
End Command