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Const MAX_PATH = 260
Private Type WIN32_FIND_DATA
dwFileAttributes As Long
ftCreationTime As Currency 'low & high 32 bits as 64-bit data type
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
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 FtpGetFile Lib "wininet.dll" Alias "FtpGetFileA" _
(ByVal hFtpSession As Long, _
ByVal lpszRemoteFile As String, _
ByVal lpszNewFile As String, _
ByVal fFailIfExists As Boolean, _
ByVal dwFlagsAndAttributes As Long, _
ByVal dwFlags As Long, _
ByVal dwContext As Long) As Boolean
Private Declare Function FtpPutFile Lib "wininet.dll" Alias "FtpPutFileA" _
(ByVal hFtpSession As Long, _
ByVal lpszLocalFile As String, _
ByVal lpszRemoteFile As String, _
ByVal dwFlags As Long, _
ByVal dwContext As Long) As Boolean
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
Sub Download_ftp_file()
Dim hOpen As Long, hConn As Long, hFind As Long
Dim ret As Long
Dim hostName As String, port As Long, username As String, password As String
Dim localFolder As String
Dim remoteDirectory As String, remoteMatchFiles As String
Dim ftpMode As Long
Dim fileFind As WIN32_FIND_DATA
Dim newestFileTime As Currency
Dim newestFileName As String
'========== User-defined settings ==========
localFolder = "P:\XX\XX\"
hostName = "xx"
port = 21
username = "xx"
password = "xx"
remoteDirectory = "/xx/xx/"
remoteMatchFiles = "*.csv"
'===========================================
ftpMode = 0 'active mode FTP
'ftpMode = INTERNET_FLAG_PASSIVE 'passive mode FTP
ret = InternetOpen("ftp VBA", 1, vbNullString, vbNullString, 0)
hOpen = ret
If ret > 0 Then
ret = InternetConnect(hOpen, hostName, port, username, password, 1, ftpMode, 0)
hConn = ret
End If
If ret > 0 Then
ret = FtpSetCurrentDirectory(hConn, remoteDirectory)
End If
If ret > 0 Then
'Find first matching file
fileFind.cFileName = String(MAX_PATH, vbNullChar)
ret = FtpFindFirstFile(hConn, remoteMatchFiles, fileFind, 0, 0)
hFind = ret
While ret > 0
Debug.Print TrimNulls(fileFind.cFileName)
'Is this file newer than the newest file seen so far?
If fileFind.ftLastWriteTime > newestFileTime Then
newestFileTime = fileFind.ftLastWriteTime
newestFileName = TrimNulls(fileFind.cFileName)
End If
'Find next matching file
fileFind.cFileName = String(MAX_PATH, vbNullChar)
ret = InternetFindNextFile(hFind, fileFind)
Wend
Debug.Print "Newest "; newestFileName
'Download the newest file to local folder
ret = FtpGetFile(hConn, newestFileName, localFolder & newestFileName, False, 0, 0, 0)
If ret = 0 Then
Debug.Print "FtpGetFile error "; Err.LastDllError
End If
End If
'Release handles
InternetCloseHandle hFind
InternetCloseHandle hConn
InternetCloseHandle hOpen
End Sub
Private Function TrimNulls(buffer As String) As String
TrimNulls = Left(buffer, InStr(buffer, vbNullChar) - 1)
End Function |
