''
''
''   FTP class (Public Domain code - enjoy).
''   Windows only. Uses WinInet system functions.
''   Paul Squires of PlanetSquires Software (August 2015)
''
''   Compiler:  FreeBASIC 1.03 (32-bit) (64-bit)
''

#Include Once "windows.bi"
#Include Once "\win\wininet.bi"

' //
' //
' //
Type clsFTP
    Private:
    m_hSession    As HINTERNET
    m_hConnection As HINTERNET
    m_LastError   As Integer
    m_ServerPort  As Integer
    m_ServerName  As String
    m_UserName    As String
    m_Password    As String

    Public:
    Declare Constructor
    Declare Destructor
    Declare Property hSession() As HINTERNET
    Declare Property hSession(Byval nValue As HINTERNET)
    Declare Property hConnection() As HINTERNET
    Declare Property hConnection(Byval nValue As HINTERNET)
    Declare Property LastError() As Integer
    Declare Property ServerPort(Byval nValue As Integer)
    Declare Property ServerPort() As Integer
    Declare Property LastError(Byval nValue As Integer)
    Declare Property ServerName() As String
    Declare Property ServerName(Byval sValue As String)
    Declare Property UserName() As String
    Declare Property UserName(Byval sValue As String)
    Declare Property Password() As String
    Declare Property Password(Byval sValue As String)
    Declare Function Connect Overload() As WINBOOL
    Declare Function Connect Overload(Byval sServerName As String, _
    Byval sServerPort As Integer, _
    Byval sUserName As String, _
    Byval sPassword As String) As WINBOOL
    Declare Sub      Disconnect()
    Declare Function SetCurrentFolder(Byval sFolderName As String) As WINBOOL
    Declare Function GetCurrentFolder() As String
    Declare Function RenameFile(Byval sOldFilename As String, _
    Byval sNewFilename As String) As WINBOOL
    Declare Function UploadFile(Byval sLocal As String, _
    Byval sRemote As String) As WINBOOL
    Declare Function DownloadFile(Byval sLocal As String, _
    Byval sRemote As String) As WINBOOL
    Declare Function KillFile(Byval sRemote As String) As WINBOOL
End Type


''
''  Initialize the class
''
Constructor clsFTP
    m_ServerPort = INTERNET_DEFAULT_FTP_PORT   ' port 21
End Constructor


''
''  Close any open connection and session
''
Destructor clsFTP
    this.Disconnect
End Destructor


''
''  hSession (Property)
''
Property clsFTP.hSession() As HINTERNET
    Property = this.m_hSession
End Property

Property clsFTp.hSession(Byval nValue As HINTERNET)
    this.m_hSession = nValue
End Property


''
''  hConnection (Property)
''
Property clsFTP.hConnection() As HINTERNET
    Property = this.m_hConnection
End Property

Property clsFTp.hConnection(Byval nValue As HINTERNET)
    this.m_hConnection = nValue
End Property


''
''  LastError (Property)
''
Property clsFTP.LastError() As Integer
    Property = this.m_LastError
End Property

Property clsFTp.LastError(Byval nValue As Integer)
    this.m_LastError = nValue
End Property


''
''  ServerPort (Property)
''
Property clsFTP.ServerPort() As Integer
    Property = this.m_ServerPort
End Property

Property clsFTp.ServerPort(Byval nValue As Integer)
    this.m_ServerPort = nValue
End Property


''
''  ServerName (Property)
''
Property clsFTP.ServerName() As String
    Property = this.m_ServerName
End Property

Property clsFTp.ServerName(Byval sValue As String)
    this.m_ServerName = sValue
End Property


''
''  UserName (Property)
''
Property clsFTP.UserName() As String
    Property = this.m_UserName
End Property

Property clsFTp.UserName(Byval sValue As String)
this.m_UserName = sValue
End Property


''
''  Password (Property)
''
Property clsFTP.Password() As String
    Property = this.m_Password
End Property

Property clsFTp.Password(Byval sValue As String)
    this.m_Password = sValue
End Property


''
''  Close current connection and end session
''
Sub clsFTP.Disconnect()
    InternetCloseHandle this.hConnection
    InternetCloseHandle this.hSession
    this.hConnection = 0: this.hSession = 0
End Sub


''
''  Connect to an ftp host (overload). Returns TRUE if successful.
''
Function clsFTP.Connect Overload() As WINBOOL
    this.hSession = InternetOpen("ftpClass", INTERNET_OPEN_TYPE_DIRECT, "", "", 0)
    If this.hSession = 0 Then
        this.LastError = GetLastError
        Function = False: Exit Function
    End If

    this.hConnection = InternetConnect(_
    this.hSession, this.ServerName, this.ServerPort, _
    this.UserName, this.Password, _
    INTERNET_SERVICE_FTP, INTERNET_FLAG_PASSIVE, 0)

    If this.hConnection = 0 Then
        this.LastError = GetLastError
        InternetCloseHandle(this.hSession)
        Function = False: Exit Function
    End If

    Function = True
End Function


''
''  Connect to an ftp host (overload). Returns TRUE if successful.
''
Function clsFTP.Connect Overload (Byval sServerName As String, _
    Byval nServerPort As Integer, _
    Byval sUserName   As String, _
    Byval sPassword   As String) As WINBOOL

    this.ServerName = sServerName
    this.ServerPort = nServerPort
    this.UserName   = sUserName
    this.Password   = sPassword

    Function = this.Connect
End Function


''
''  Change to a folder on the server. Returns TRUE if successful.
''
Function clsFTP.SetCurrentFolder(Byval sFolderName As String) As WINBOOL
    Function = FtpSetCurrentDirectory(this.hConnection, sFolderName)
    this.LastError = GetLastError
End Function


''
''  Retrieves the name of current folder on the server.
''
Function clsFTP.GetCurrentFolder() As String
    Dim zBuffer As ZString * MAX_PATH
    Dim nLength As Integer = MAX_PATH

    FtpGetCurrentDirectory(this.hConnection, zBuffer, Cast(LPDWORD, @nLength))
    this.LastError = GetLastError

    Function = zBuffer
End Function


''
''  Rename a file on the server. Returns TRUE if successful.
''
Function clsFTP.RenameFile(Byval sOldFilename As String, Byval sNewFilename As String) As WINBOOL
    Function = FtpRenameFile(this.hConnection, sOldFilename, sNewFilename)
    this.LastError = GetLastError
End Function


''
''  Upload a file to the server. Returns TRUE if successful.
''
Function clsFTP.UploadFile(Byval sLocal As String, Byval sRemote As String) As WINBOOL
    Function = FtpPutFile(this.hConnection, sLocal, sRemote, FTP_TRANSFER_TYPE_BINARY, 0)
    this.LastError = GetLastError
End Function


''
''  Download a file from the server. Returns TRUE if successful.
''
Function clsFTP.DownloadFile(Byval sLocal As String, Byval sRemote As String) As WINBOOL
    Function = FtpGetFile(this.hConnection, sRemote, sLocal, False, _
    FILE_ATTRIBUTE_NORMAL, FTP_TRANSFER_TYPE_BINARY Or INTERNET_FLAG_RELOAD, 0)
    this.LastError = GetLastError
End Function


''
''  Remove a file from the server. Returns TRUE if successful.
''
Function clsFTP.KillFile(Byval sRemote As String) As WINBOOL
    Function = FtpDeleteFile(this.hConnection, sRemote)
    this.LastError = GetLastError
End Function