Wininet FTP Error with FTPFindFirstFile 64-Bit Excel

C

Cyrrhus

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Joined
Jun 10, 2015
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2
I've written some code to use wininet to list and then later download a variety of files on an FTP site. When using Microsoft Office 2010 32-bit the code works fine; however, when using Office 2013 64-bit the program returns garbage info in the WIN32_FIND_DATA type. The correct results when running this program should be a debug output as shown below.
Found winzip145.exe
Found winzip145bp.exe
Found winzip145jp.exe
​

The 64-bit version of Office 2013 that I have prints the following:
Found
Found
Found
​

It seems to be finding the right amount of files, but the data in the WIN32_FIND_DATA type is messed up and missing a vbnullstring so it prints a blank string. Anyone have an idea of what's going on or how to fix it? See the code below.

Thanks,


Code: 
Option Explicit
 
Const MAX_PATH As Integer = 260
Const INTERNET_SERVICE_FTP = 1
Const INTERNET_FLAG_RELOAD = &H80000000
Const INTERNET_FLAG_NO_CACHE_WRITE = &H4000000

#If VBA7 Then
    Private Declare PtrSafe Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
    (ByVal sAgent As String, _
    ByVal lAccessType As LongPtr, _
    ByVal sProxyName As String, _
    ByVal sProxyBypass As String, _
    ByVal lFlags As LongPtr) As LongPtr
     
    Private Declare PtrSafe Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
    (ByVal hInternetSession As LongPtr, _
    ByVal sServerName As String, _
    ByVal nServerPort As Integer, _
    ByVal sUsername As String, _
    ByVal sPassword As String, _
    ByVal lService As LongPtr, _
    ByVal lFlags As LongPtr, _
    ByVal lContext As LongPtr) As LongPtr
     
    Private Declare PtrSafe Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" _
    (ByVal hFtpSession As LongPtr, _
    ByVal lpszDirectory As String) As Boolean
     
    Private Declare PtrSafe Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
    (ByVal hFtpSession As LongPtr, _
    ByVal lpszSearchFile As String, _
    lpFindFileData As WIN32_FIND_DATA, _
    ByVal dwFlags As LongPtr, _
    ByVal dwContent As LongPtr) As LongPtr
     
    Private Declare PtrSafe Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
    (ByVal hFind As LongPtr, _
    lpFindFileData As WIN32_FIND_DATA) As LongPtr
     
    Private Declare PtrSafe Function InternetCloseHandle Lib "wininet.dll" _
    (ByVal hInet As LongPtr) As Integer
    
    Private Type FILETIME
        dwLowDateTime As LongPtr
        dwHighDateTime As LongPtr
    End Type
    
    Private Type WIN32_FIND_DATA
        dwFileAttributes As LongPtr
        ftCreationTime As FILETIME
        ftLastAccessTime As FILETIME
        ftLastWriteTime As FILETIME
        nFileSizeHigh As LongPtr
        nFileSizeLow As LongPtr
        dwReserved0 As LongPtr
        dwReserved1 As LongPtr
        cFileName As String * MAX_PATH
        cAlternate As String * 14
    End Type

#Else
    Private Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
    (ByVal sAgent As String, _
    ByVal lAccessType As Long, _
    ByVal sProxyName As String, _
    ByVal sProxyBypass As String, _
    ByVal lFlags As Long) As Long
     
    Private Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
    (ByVal hInternetSession As Long, _
    ByVal sServerName As String, _
    ByVal nServerPort As Integer, _
    ByVal sUsername As String, _
    ByVal sPassword As String, _
    ByVal lService As Long, _
    ByVal lFlags As Long, _
    ByVal lContext As Long) As Long
     
    Private Declare Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" _
    (ByVal hFtpSession As Long, _
    ByVal lpszDirectory As String) As Boolean
     
    Private Declare Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
    (ByVal hFtpSession As Long, _
    ByVal lpszSearchFile As String, _
    lpFindFileData As WIN32_FIND_DATA, _
    ByVal dwFlags As Long, _
    ByVal dwContent As Long) As Long
     
    Private Declare Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
    (ByVal hFind As Long, _
    lpFindFileData As WIN32_FIND_DATA) As Long
     
    Private Declare Function InternetCloseHandle Lib "wininet.dll" _
    (ByVal hInet As Long) As Integer
    
    Private Type FILETIME
        dwLowDateTime As Long
        dwHighDateTime As Long
    End Type
    
    Private Type WIN32_FIND_DATA
        dwFileAttributes As Long
        ftCreationTime As FILETIME
        ftLastAccessTime As FILETIME
        ftLastWriteTime As FILETIME
        nFileSizeHigh As Long
        nFileSizeLow As Long
        dwReserved0 As Long
        dwReserved1 As Long
        cFileName As String * MAX_PATH
        cAlternate As String * 14
    End Type
#End If

Public Sub TestFTP()
  
    #If VBA7 Then
        Dim hOpen As LongPtr, hConn As LongPtr, hFind As LongPtr, ret As LongPtr, ftpMode As LongPtr
    #Else
        Dim hOpen As Long, hConn As Long, hFind As Long, ret As Long, ftpMode As Long
    #End If
    
    Dim hostName As String, username As String, password As String
    Dim remoteDirectory As String, remoteMatchFiles As String, sTargetFileName As String
    Dim fileFind As WIN32_FIND_DATA
    Dim fDate As Date
    Dim port As Integer, iCount As Integer
    
    'testing the ftp functions
     '========== User-defined settings ==========
    hostName = "ftp2.winzip.com"
    port = 21
    username = ""
    password = ""
    remoteDirectory = "/ohhp/"
    remoteMatchFiles = "*"
     '===========================================
     
    ftpMode = 1 'active mode FTP
     
    ret = InternetOpen("ftp VBA", 1, vbNullString, vbNullString, 0)
    hOpen = ret
    
    If ret > 0 Then
        ret = InternetConnect(hOpen, hostName, port, username, password, INTERNET_SERVICE_FTP, ftpMode, 0)
        hConn = ret
    End If
     
    If ret > 0 Then
        ret = FtpSetCurrentDirectory(hConn, remoteDirectory)
    End If
     
    If ret > 0 Then
        
        'find first file
        fileFind.cFileName = String(MAX_PATH, 0)
        ret = FtpFindFirstFile(hConn, remoteMatchFiles, fileFind, INTERNET_FLAG_RELOAD Or INTERNET_FLAG_NO_CACHE_WRITE, 0)
        
        hFind = ret
        
        While ret > 0
            
            iCount = iCount + 1
            sTargetFileName = Left((fileFind.cFileName), InStr(1, fileFind.cFileName, String(1, 0), vbBinaryCompare) - 1)
            
            'fDate = CDate((fileFind.ftLastWriteTime / 86400000#) - 109205#)

            'print the file name and date
            Debug.Print "Found " & sTargetFileName & vbTab '& fDate
            
            'Find next matching file
            fileFind.cFileName = String(MAX_PATH, 0)
            ret = InternetFindNextFile(hFind, fileFind)
        Wend

    End If

    InternetCloseHandle hFind
    InternetCloseHandle hConn
    InternetCloseHandle hOpen
End Sub
 

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AFAIK, all the LongPtr parts in your type declaration should actually be Long.
 
Upvote 0
RoryA said:
AFAIK, all the LongPtr parts in your type declaration should actually be Long.
Click to expand...

Thank you so much! This had me stumped for a while and it's working great now.

I removed the FILETIME and WIN32_FIND_DATA type definition from the VBA7 conditional and changed all the LongPtr parts to Long. I've attached the working code below for clarification for anyone who is interested.

Code: 
Option Explicit
 
Const MAX_PATH As Integer = 260
Const INTERNET_SERVICE_FTP = 1
Const INTERNET_FLAG_RELOAD = &H80000000
Const INTERNET_FLAG_NO_CACHE_WRITE = &H4000000

Private Type WIN32_FIND_DATA
    dwFileAttributes As Long
    ftCreationTime As Currency
    ftLastAccessTime As Currency
    ftLastWriteTime As Currency
    nFileSizeHigh As Long
    nFileSizeLow As Long
    dwReserved0 As Long
    dwReserved1 As Long
    cFileName As String * MAX_PATH
    cAlternate As String * 14
End Type


#If VBA7 Then
    Private Declare PtrSafe Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
    (ByVal sAgent As String, _
    ByVal lAccessType As LongPtr, _
    ByVal sProxyName As String, _
    ByVal sProxyBypass As String, _
    ByVal lFlags As LongPtr) As LongPtr
     
    Private Declare PtrSafe Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
    (ByVal hInternetSession As LongPtr, _
    ByVal sServerName As String, _
    ByVal nServerPort As Integer, _
    ByVal sUsername As String, _
    ByVal sPassword As String, _
    ByVal lService As LongPtr, _
    ByVal lFlags As LongPtr, _
    ByVal lContext As LongPtr) As LongPtr
     
    Private Declare PtrSafe Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" _
    (ByVal hFtpSession As LongPtr, _
    ByVal lpszDirectory As String) As Boolean
     
    Private Declare PtrSafe Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
    (ByVal hFtpSession As LongPtr, _
    ByVal lpszSearchFile As String, _
    lpFindFileData As WIN32_FIND_DATA, _
    ByVal dwFlags As LongPtr, _
    ByVal dwContent As LongPtr) As LongPtr
     
    Private Declare PtrSafe Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
    (ByVal hFind As LongPtr, _
    lpFindFileData As WIN32_FIND_DATA) As LongPtr
     
    Private Declare PtrSafe Function InternetCloseHandle Lib "wininet.dll" _
    (ByVal hInet As LongPtr) As Integer
    
#Else
    Private Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
    (ByVal sAgent As String, _
    ByVal lAccessType As Long, _
    ByVal sProxyName As String, _
    ByVal sProxyBypass As String, _
    ByVal lFlags As Long) As Long
     
    Private Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
    (ByVal hInternetSession As Long, _
    ByVal sServerName As String, _
    ByVal nServerPort As Integer, _
    ByVal sUsername As String, _
    ByVal sPassword As String, _
    ByVal lService As Long, _
    ByVal lFlags As Long, _
    ByVal lContext As Long) As Long
     
    Private Declare Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" _
    (ByVal hFtpSession As Long, _
    ByVal lpszDirectory As String) As Boolean
     
    Private Declare Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
    (ByVal hFtpSession As Long, _
    ByVal lpszSearchFile As String, _
    lpFindFileData As WIN32_FIND_DATA, _
    ByVal dwFlags As Long, _
    ByVal dwContent As Long) As Long
     
    Private Declare Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
    (ByVal hFind As Long, _
    lpFindFileData As WIN32_FIND_DATA) As Long
     
    Private Declare Function InternetCloseHandle Lib "wininet.dll" _
    (ByVal hInet As Long) As Integer
    
#End If

Public Sub TestFTP()
  
    #If VBA7 Then
        Dim hOpen As LongPtr, hConn As LongPtr, hFind As LongPtr, ret As LongPtr, ftpMode As LongPtr
    #Else
        Dim hOpen As Long, hConn As Long, hFind As Long, ret As Long, ftpMode As Long
    #End If
    
    Dim hostName As String, username As String, password As String
    Dim remoteDirectory As String, remoteMatchFiles As String, sTargetFileName As String
    Dim fileFind As WIN32_FIND_DATA
    Dim fDate As Date
    Dim port As Integer, iCount As Integer
    
    'testing the ftp functions
     '========== User-defined settings ==========
    hostName = "ftp2.winzip.com"
    port = 21
    username = ""
    password = ""
    remoteDirectory = "/ohhp/"
    remoteMatchFiles = "*"
     '===========================================
     
    ftpMode = 1 'active mode FTP
     
    ret = InternetOpen("ftp VBA", 1, vbNullString, vbNullString, 0)
    hOpen = ret
    
    If ret > 0 Then
        ret = InternetConnect(hOpen, hostName, port, username, password, INTERNET_SERVICE_FTP, ftpMode, 0)
        hConn = ret
    End If
     
    If ret > 0 Then
        ret = FtpSetCurrentDirectory(hConn, remoteDirectory)
    End If
     
    If ret > 0 Then
        
        'find first file
        fileFind.cFileName = String(MAX_PATH, 0)
        ret = FtpFindFirstFile(hConn, remoteMatchFiles, fileFind, INTERNET_FLAG_RELOAD Or INTERNET_FLAG_NO_CACHE_WRITE, 0)
        
        hFind = ret
        
        While ret > 0
            
            iCount = iCount + 1
            sTargetFileName = Left((fileFind.cFileName), InStr(1, fileFind.cFileName, String(1, 0), vbBinaryCompare) - 1)
            
            fDate = CDate((fileFind.ftLastWriteTime / 86400000#) - 109205#)

            'print the file name and date
            Debug.Print "Found " & sTargetFileName & vbTab & fDate
            
            'Find next matching file
            fileFind.cFileName = String(MAX_PATH, 0)
            ret = InternetFindNextFile(hFind, fileFind)
        Wend

    End If

    InternetCloseHandle hFind
    InternetCloseHandle hConn
    InternetCloseHandle hOpen
End Sub
 
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