Visual Basic 6.0
Visual Basic 6.0
Get a Remote File's Last-Modified Time
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Demonstrates the Chilkat SFtp.GetFileLastModifiedStr method, which returns a remote file's last-modified date and time. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.
Background: The last-modified time is the workhorse timestamp — it updates whenever a file's contents change and is what incremental-sync logic compares to decide whether a file needs re-transferring. It is the most reliably supported of the three across servers and filesystems, which is why timestamp-based sync keys off it.
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Dim success As Long
success = 0
' Demonstrates the SFtp.GetFileLastModifiedStr method, which returns a remote file's last-modified
' date and time. The 1st argument is the remote path (or handle), the 2nd selects whether
' symbolic links are followed, and the 3rd indicates whether the 1st argument is a handle.
Dim sftp As New ChilkatSFtp
' Connect, authenticate, and initialize the SFTP subsystem.
Dim port As Long
port = 22
success = sftp.Connect("sftp.example.com",port)
If (success = 0) Then
Debug.Print sftp.LastErrorText
Exit Sub
End If
' Normally you would not hard-code the password in source. You should instead obtain it
' from an interactive prompt, environment variable, or a secrets vault.
Dim password As String
password = "mySshPassword"
success = sftp.AuthenticatePw("mySshLogin",password)
If (success = 0) Then
Debug.Print sftp.LastErrorText
Exit Sub
End If
success = sftp.InitializeSftp()
If (success = 0) Then
Debug.Print sftp.LastErrorText
Exit Sub
End If
' The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
' The 3rd argument (bIsHandle) is 0 here because the 1st argument is a path, not an
' open handle.
Dim bFollowLinks As Long
bFollowLinks = 1
Dim bIsHandle As Long
bIsHandle = 0
Dim lastModified As String
lastModified = sftp.GetFileLastModifiedStr("subdir/report.pdf",bFollowLinks,bIsHandle)
If (sftp.LastMethodSuccess = 0) Then
Debug.Print sftp.LastErrorText
Exit Sub
End If
Debug.Print "Last modified: " & lastModified
sftp.Disconnect