[VB.NET] Listing d'un répertoire par FTP avec API

**joefou** · 16/12/2005, 14h32

[VS.NET 2003]

Salut à tous !

J'ai un soucis dans la récupération du listing d'un répertoire Unix via les API gérant le FTP. Voici ce que j'utilise, c'est un code issu de VB5 que j'ai réadapté:

Code :

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Public Class FTPManagerAPI
 
    Public Declare Function InternetCloseHandle Lib "wininet.dll" (ByVal hInet As Integer) As Integer
    Public Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" (ByVal hInternetSession As Integer, ByVal sServerName As String, ByVal nServerPort As Integer, ByVal sUserName As String, ByVal sPassword As String, ByVal lService As Integer, ByVal lFlags As Integer, ByVal lContext As Integer) As Integer
    Public Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Integer, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Integer) As Integer
    Public Declare Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" (ByVal hFtpSession As Integer, ByVal lpszDirectory As String) As Boolean
    Public Declare Function FtpGetCurrentDirectory Lib "wininet.dll" Alias "FtpGetCurrentDirectoryA" (ByVal hFtpSession As Integer, ByVal lpszCurrentDirectory As String, ByVal lpdwCurrentDirectory As Integer) As Integer
    Public Declare Function FtpCreateDirectory Lib "wininet.dll" Alias "FtpCreateDirectoryA" (ByVal hFtpSession As Integer, ByVal lpszDirectory As String) As Boolean
    Public Declare Function FtpRemoveDirectory Lib "wininet.dll" Alias "FtpRemoveDirectoryA" (ByVal hFtpSession As Integer, ByVal lpszDirectory As String) As Boolean
    Public Declare Function FtpDeleteFile Lib "wininet.dll" Alias "FtpDeleteFileA" (ByVal hFtpSession As Integer, ByVal lpszFileName As String) As Boolean
    Public Declare Function FtpRenameFile Lib "wininet.dll" Alias "FtpRenameFileA" (ByVal hFtpSession As Integer, ByVal lpszExisting As String, ByVal lpszNew As String) As Boolean
    Public Declare Function FtpGetFile Lib "wininet.dll" Alias "FtpGetFileA" (ByVal hConnect As Integer, ByVal lpszRemoteFile As String, ByVal lpszNewFile As String, ByVal fFailIfExists As Integer, ByVal dwFlagsAndAttributes As Integer, ByVal dwFlags As Integer, ByRef dwContext As Integer) As Boolean
    Public Declare Function FtpPutFile Lib "wininet.dll" Alias "FtpPutFileA" (ByVal hConnect As Integer, ByVal lpszLocalFile As String, ByVal lpszNewRemoteFile As String, ByVal dwFlags As Integer, ByVal dwContext As Integer) As Boolean
    Public Declare Function InternetGetLastResponseInfo Lib "wininet.dll" Alias "InternetGetLastResponseInfoA" (ByVal lpdwError As Integer, ByVal lpszBuffer As String, ByVal lpdwBufferLength As Integer) As Boolean
    Public Declare Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" (ByVal hFtpSession As Integer, ByVal lpszSearchFile As String, ByVal lpFindFileData As WIN32_FIND_DATA, ByVal dwFlags As Integer, ByVal dwContent As Integer) As Integer
    Public Declare Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" (ByVal hFind As Integer, ByVal lpvFindData As WIN32_FIND_DATA) As Integer
    Public Declare Function LocalFileTimeToFileTime Lib "kernel32" (ByVal lpLocalFileTime As FILETIME, ByVal lpFileTime As FILETIME) As Integer
 
 
    Public Enum eTRANSFERT_TYPE
        FTP_TRANSFER_TYPE_ASCII = &H1
        FTP_TRANSFER_TYPE_BINARY = &H2
        FTP_TRANSFER_TYPE_UNKNOWN = &H0
    End Enum
 
    Public Const INTERNET_DEFAULT_FTP_PORT As Short = 21               ' default for FTP servers
    Public Const INTERNET_SERVICE_FTP As Integer = 1
    Public Const INTERNET_FLAG_PASSIVE As Integer = &H8000000            ' used for FTP connections
    Public Const INTERNET_OPEN_TYPE_PRECONFIG As Integer = 0                    ' use registry configuration
    Public Const INTERNET_OPEN_TYPE_DIRECT As Integer = 1                         ' direct to net
    Public Const INTERNET_OPEN_TYPE_PROXY As Integer = 3                         ' via named proxy
    Public Const INTERNET_OPEN_TYPE_PRECONFIG_WITH_NO_AUTOPROXY As Integer = 4   ' prevent using java/script/INS
    Public Const MAX_PATH As Integer = 260
    Public Const PassiveConnection As Boolean = True
 
    Public Structure FILETIME
        Public dwLowDateTime As Integer
        Public dwHighDateTime As Integer
    End Structure
 
    Public Structure SYSTEMTIME
        Public wYear As Integer
        Public wMonth As Integer
        Public wDayOfWeek As Integer
        Public wDay As Integer
        Public wHour As Integer
        Public wMinute As Integer
        Public wSecond As Integer
        Public wMilliseconds As Integer
    End Structure
 
    Public Structure WIN32_FIND_DATA
        Public dwFileAttributes As Integer
        Public ftCreationTime As FILETIME
        Public ftLastAccessTime As FILETIME
        Public ftLastWriteTime As FILETIME
        Public nFileSizeHigh As Integer
        Public nFileSizeLow As Integer
        Public dwReserved0 As Integer
        Public dwReserved1 As Integer
        <System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst:=260)> Public cFileName As String
        <System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst:=14)> Public cAlternate As String
    End Structure
 
    Private m_ListeFichiers As Collection
 
    '------------------------------
    'Constructeur
    '------------------------------
    Public Sub New()
        m_ListeFichiers = New Collection
    End Sub
 
    '------------------------------------------------
    'Completer une chaine de caracteres par la droite
    ' Texte: chaine à compléter
    ' Taille: taille que la chaine doit atteindre
    ' Caractere: caractere de completion
    ' Retour: chaine complétée à droite
    '------------------------------------------------
    Private Function CompleterDroite(ByVal Texte As String, ByVal Taille As Integer, Optional ByVal Caractere As String = " ")
        Dim I As Integer
        Dim TexteRetour As String
        TexteRetour = Texte
        TexteRetour = TexteRetour.Trim()
        If TexteRetour.Equals(String.Empty) Then
            For I = 0 To Taille - 1
                TexteRetour = TexteRetour & Caractere
            Next I
        ElseIf TexteRetour.Length > Taille Then
            TexteRetour = TexteRetour.Substring(0, Taille)
        Else
            For I = TexteRetour.Length To Taille - 1
                TexteRetour = TexteRetour & Caractere
            Next I
        End If
        Return TexteRetour
    End Function
 
    '---------------------------------
    'Lister les fichiers
    '---------------------------------
    Public Function EnumFiles(ByVal stServ As String, ByVal stLogin As String, ByVal stPass As String, ByVal stRepFtp As String, ByVal stFicFtp As String)
 
        Dim pData As New WIN32_FIND_DATA
        Dim hFind As Integer
        Dim lRet As Integer
 
        Dim lgFtp As Integer
        Dim lgSession, v As Integer
 
 
        lgSession = InternetOpen("EnumFiles", INTERNET_OPEN_TYPE_PRECONFIG, vbNullString, vbNullString, 0)
 
        If lgSession Then
 
            lgFtp = InternetConnect(lgSession, stServ, INTERNET_DEFAULT_FTP_PORT, stLogin, stPass, INTERNET_SERVICE_FTP, 0, 0)
 
            If lgFtp Then
 
                If FtpSetCurrentDirectory(lgFtp, stRepFtp) Then
 
                    pData.cFileName = CompleterDroite("", MAX_PATH, Chr(0))
 
                    hFind = FtpFindFirstFile(lgFtp, stFicFtp, pData, 0, 0)
 
                    If hFind = 0 Then Exit Function
 
                    m_ListeFichiers.Add(EpurFic(Left(pData.cFileName, InStr(1, pData.cFileName, Chr(0), vbBinaryCompare) - 1)))
 
                    Do
 
                        pData.cFileName = CompleterDroite("", MAX_PATH, Chr(0))
 
                        lRet = InternetFindNextFile(hFind, pData)   '<<<<<<<< LIGNE QUI POSE PROBLEME
 
                        If lRet = 0 Then Exit Do
 
                        v = pData.ftLastWriteTime.dwHighDateTime
 
                        m_ListeFichiers.Add(EpurFic(Left(pData.cFileName, InStr(1, pData.cFileName, Chr(0), vbBinaryCompare) - 1)))
                    Loop
 
                    InternetCloseHandle(hFind)
 
 
                Else
                    MsgBox("Erreur de positionnement dans le répertoire distant!")
                End If
 
 
            Else
                MsgBox("Erreur ouverture session FTP, vérifiez l'adresse, le login/pwd.")
            End If
 
        Else
            MsgBox("Pas de connexion!")
        End If
 
 
    End Function
 
.....

Quand je parviens à la ligne "lRet = InternetFindNextFile(hFind, pData)" de la méthode "EnumFiles", j'ai toujours un résultat à 0 (les chemins unix sont corrects, et les répertoires que je tente de lister possèdent toujours des fichiers)

Quelqu'un a-t'il une idée ?
D'avance merci !

**joefou** · 16/12/2005, 15h29

Ayé !

J'ai trouvé !
Il s'agissait des déclarations des fonctions FtpFindFirstFile et InternetFindNextFile qui posaient problème ! à cause d'un "Auto" manquant dans le Declare...

Code :

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public Declare Auto Function FtpFindFirstFile _
                        Lib "wininet.dll" Alias "FtpFindFirstFileA" _
                        (ByVal hFtpSession As Integer, _
                        ByVal lpszSearchFile As String, _
                        ByRef lpFindFileData As WIN32_FIND_DATA, _
                        ByVal dwFlags As Integer, _
                        ByVal dwContent As Integer) As Integer
    Public Declare Auto Function InternetFindNextFile _
                        Lib "wininet.dll" Alias "InternetFindNextFileA" _
                        (ByVal hFind As Integer, _
                        ByRef lpvFindData As WIN32_FIND_DATA) As Integer

[VB.NET] Listing d'un répertoire par FTP avec API

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