' main.vb SNF-SDK-WIN VB OEM Demonstration Code
' Copyright (C) 2009 ARM Research Labs, LLC
'
' This app simply exercises the API provided by snfmultidll.

Imports System.Runtime.InteropServices
Imports System.Text

Module SNFMultiDLLExample

#Region "DLL Imports"

    ' Location of SNFMulti.dll.
    Const SNFMULTI_DLL As String = "..\..\..\..\64bitDll\SNFMulti.dll" ' Set CPU type to "Any CPU"
    'Const SNFMULTI_DLL As String = "..\..\..\..\..\64bitDll\SNFMulti.dll" ' Set CPU type to "x64"
    'Const SNFMULTI_DLL As String = "..\..\..\..\..\32bitDll\SNFMulti.dll" ' Set CPU type to "x86"

    'int setThrottle(int Threads);                                                   /* Set scan thread limit. */
    'int startupSNF(char* Path);                                                     /* Start SNF with configuration. */
    'int startupSNFAuthenticated(char* Path, char* Lic, char* Auth);                 /* Start SNF with conf & auth. */
    'int shutdownSNF();                                                              /* Shutdown SNF. */
    'int testIP(unsigned long int IPToCheck);                                        /* Test the IP for a GBUdb range. */
    'double getIPReputation(unsigned long int IPToCheck);                            /* Get reputation figure for IP. */
    'int scanBuffer(unsigned char* Bfr, int Length, char* Name, int Setup);          /* Scan msgBuffer, name, setup time. */
    'int scanFile(char* FilePath, int Setup);                                        /* Scan msgFile, setup time. */
    'int getScanXHeaders(int ScanHandle, char** Bfr, int* Length);                   /* Get result & XHeaders. */
    'int getScanXMLLog(int ScanHandle, char** Bfr, int* Length);                     /* Get result & XML Log. */
    'int getScanClassicLog(int ScanHandle, char** Bfr, int* Length);                 /* Get result & Classic Log. */
    'int getScanResult(int ScanHandle);                                              /* Get just the scan result. */
    'int closeScan(int ScanHandle);                                                  /* Close the scan result. */


    'Set scan thread limit
    <DllImport(SNFMULTI_DLL, EntryPoint:="setThrottle", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function setThrottle(ByVal Threads As Int32) As Int32
    End Function

    'Startup
    <DllImport(SNFMULTI_DLL, EntryPoint:="startupSNF", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function startupSNF(ByVal PathToConfigurationFile As String) As Int32
    End Function

    'Start SNF with conf & auth.
    <DllImport(SNFMULTI_DLL, EntryPoint:="startupSNFAuthenticated", CharSet:=CharSet.Ansi, _
               CallingConvention:=CallingConvention.Winapi)> _
    Public Function startupSNFAuthenticated( _
        ByVal Path As String, _
        ByVal Lic As String, _
        ByVal Auth As String) As Int32
    End Function

    'Shutdown
    <DllImport(SNFMULTI_DLL, EntryPoint:="shutdownSNF", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function shutdownSNF() As Int32
    End Function

    'Test IP
    <DllImport(SNFMULTI_DLL, EntryPoint:="testIP", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function testIP(ByVal IPToCheck As UInt32) As Int32
    End Function

    'getIPReputation
    <DllImport(SNFMULTI_DLL, EntryPoint:="getIPReputation", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function getIPReputation(ByVal IPToCheck As UInt32) As Double
    End Function

    'ScanBuffer - returns scannerhandle
    <DllImport(SNFMULTI_DLL, EntryPoint:="scanBuffer", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function scanBuffer(ByVal MsgBfr As StringBuilder, ByVal MsgBfrLen As Int32, ByVal MsgID As String, ByVal SetupTime As Int32) As Int32
    End Function

    'ScanFile
    <DllImport(SNFMULTI_DLL, EntryPoint:="scanFile", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function scanFile(ByVal FilePath As String, ByVal Setup As Int32) As Int32
    End Function

    'GetScanXHeaders - use scannerhandle returned from previous - returns ScanResult Code
    <DllImport(SNFMULTI_DLL, EntryPoint:="getScanXHeaders", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function getScanXHeaders(ByVal ScannerHandle As Int32, ByRef HeadersPtr As IntPtr, ByRef HeadersLength As Int32) As Int32
    End Function

    'GetScanXMLLog - Get result & XML Log
    <DllImport(SNFMULTI_DLL, EntryPoint:="getScanXMLLog", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function getScanXMLLog(ByVal ScannerHandle As Int32, ByRef LogPtr As IntPtr, ByRef LogLength As Int32) As Int32
    End Function

    'GetScanClassicLog - Get result & Classic Log
    <DllImport(SNFMULTI_DLL, EntryPoint:="getScanClassicLog", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function getScanClassicLog(ByVal ScannerHandle As Int32, ByRef LogPtr As IntPtr, ByRef LogLength As Int32) As Int32
    End Function

    'GetScanResult - Get just the scan result
    <DllImport(SNFMULTI_DLL, EntryPoint:="getScanResult", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function getScanResult(ByVal ScannerHandle As Int32) As Int32
    End Function

    'Close Scan
    <DllImport(SNFMULTI_DLL, EntryPoint:="closeScan", CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Winapi)> _
    Public Function closeScan(ByVal ScannerHandle As Int32) As Int32
    End Function

#End Region

    Sub Main()

        ' Setup the basics we need to run this test.

        'Const LicenseID As String = "licensid"                                 ' SNF License ID can be passed
        'Const Authentication As String = "authentication"                      ' directly or read from the
                                                                                ' configuration. OEMs go direct!
        Const ConfigurationPath As String = "..\..\..\snf_engine.xml"           ' For "Any CPU" platform.
        'Const ConfigurationPath As String = "..\..\..\..\snf_engine.xml"        ' For "x86" or "x64" platforms.


        Const IPToTest As UInt32 = &HC22384E                                   ' Same as IP 12.34.56.78

        Const SampleMessage As String = _
            "Received: from mx-out.example.com [12.34.56.78] (HELO Somebody)\r\n" + _
            "  by mx-in.example.com (nosuchserver v1.0) for nobody@example.com\r\n" + _
            "From: <somebody@example.com>\r\n" + _
            "To: <nobody@example.com>\r\n" + _
            "Subject: Nothing to see here\r\n" + _
            "\r\n" + _
            "So this is the big thing that's not here to see.\r\n" + _
            "I thought it would be more interesting than this.\r\n" + _
            "\r\n" + _
            "_M\r\n" + _
            ".\r\n"

        '' Here is a simple example. Startup, exercise the API, shut down.
        '' Note that we're doing this in a very "C" style becuase the DLL API is C

        Dim Result As Integer = 0

        Result = startupSNF(ConfigurationPath)

        'Result = startupSNFAuthenticated( _
        '    ConfigurationPath, _
        '    LicenseID, _
        '    Authentication)

        Console.WriteLine("Started with config " + ConfigurationPath + " Result: " + Result.ToString("D"))

        ' IP tests can be done asynchrounously - they do not have to be part of any particular scan.

        Result = testIP(IPToTest)
        Console.WriteLine("IP test result: " + Result.ToString("D"))

        Dim IPReputation As Double = getIPReputation(IPToTest)
        Console.WriteLine("IP Reputation: " + IPReputation.ToString())

        ' Messgae scans happen in a scan, read, close cycle as shown inside this loop.

        Const NumberOfScans As Integer = 10
        For i As Integer = 0 To NumberOfScans

            ' Show how the IP reputation changes over time.

            IPReputation = getIPReputation(IPToTest)
            Console.WriteLine("IP Reputation: " + IPReputation.ToString())

            ' Scan a message from a buffer.

            Dim SetupTime As Integer = 12
            Dim ScanHandle As Integer = 0
            Dim MsgBuffer As New StringBuilder
            MsgBuffer.Append(SampleMessage)
            ScanHandle = scanBuffer(MsgBuffer, MsgBuffer.Length(), "TestMessage", SetupTime)


            Console.WriteLine("Scan Handle: " + ScanHandle.ToString("D"))

            ' Retrieve the X-Headers for the scan.

            Dim XHeadersBuffer As IntPtr = IntPtr.Zero
            Dim XHeadersLength As Int32
            Dim XHeaders As String

            Dim ScanResult As Integer = 0
            ScanResult = getScanXHeaders(ScanHandle, XHeadersBuffer, XHeadersLength)
            XHeaders = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(XHeadersBuffer, XHeadersLength)

            ' Close the scan.

            Result = closeScan(ScanHandle)

            Console.WriteLine("Scan Close Result: " + Result.ToString("D"))

            ' X- headers were captured in a string BEFORE closing the scan so we can
            ' use them here.

            Console.WriteLine("Scan result code: " + ScanResult.ToString("D"))
            Console.WriteLine("Scan X- headers: " + XHeaders)

        Next i

        ' Now that all scanning is done we shut down.

        Result = shutdownSNF()

    End Sub

End Module