que je trouve utile
- Code : Tout sélectionner
'// Classe permettant d'obtenir l'adresse IP d'une station
Option Public
Public Const IP_SUCCESS = 0
Private Const WSADescription_Len = 255 ' 256, 0-based
Private Const WSASYS_Status_Len = 127 ' 128, 0-based
Public Const WS_VERSION_REQD = &H101
Public Const MIN_SOCKETS_REQD = 1
Public Const SOCKET_ERROR = -1
Public Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To WSADescription_Len) As Integer
szSystemStatus(0 To WSASYS_Status_Len) As Integer
wMaxSockets As Long
wMaxUDPDG As Long
dwVendorInfo As Long
End Type
Declare Function gethostbyname Lib "wsock32" (Byval hostname As String) As Long
Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (xDest As Any, xSource As Any, Byval nbytes As Long)
Declare Function lstrlenA Lib "kernel32" (lpString As Any) As Long
Declare Function WSAStartup Lib "wsock32" (Byval wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Declare Function WSACleanup Lib "wsock32" () As Long
Declare Function inet_ntoa Lib "wsock32.dll" (Byval addr As Long) As Long
Declare Function lstrcpyA Lib "kernel32" (Byval RetVal As String, Byval Ptr As Long) As Long
Class HostName
Private HostNameStr As String
Public IPAddress As String
Public ErrMsg As String
Public Error As Integer
Sub New(host As String)
If SocketsInitialize() Then
Me.IPAddress = GetIPFromHostName(host)
Me.Error = 0
Me.ErrMsg = ""
If Not SocketsCleanup Then
Me.Error = 200
Me.ErrMsg = "Windows Sockets error occurred in Cleanup."
End If
Else
Me.Error = 100
Me.ErrMsg = "Windows Sockets for 32 bit Windows is not successfully responding."
Me.IPAddress = ""
End If
End Sub
End Class
Private Function SocketsInitialize() As Integer
Dim WSAD As WSADATA
Dim success As Long
SocketsInitialize = (WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS)
End Function
Private Function SocketsCleanup() As Integer
If WSACleanup() <> 0 Then
SocketsCleanup = False
Else
SocketsCleanup = True
End If
End Function
Private Function GetIPFromHostName(Byval sHostName As String) As String
Dim ptrHosent As Long
Dim ptrName As Long
Dim ptrAddress As Long
Dim ptrIPAddress As Long
Dim dwAddress As Long
ptrHosent = gethostbyname(sHostName & Chr(0))
If ptrHosent <> 0 Then
ptrName = ptrHosent
ptrAddress = ptrHosent + 12
CopyMemory ptrAddress, Byval ptrAddress, 4
CopyMemory ptrIPAddress, Byval ptrAddress, 4
CopyMemory dwAddress, Byval ptrIPAddress, 4
GetIPFromHostName = GetIPFromAddress(dwAddress)
End If
End Function
Public Function GetIPFromAddress(Address As Long) As String
Dim ptrString As Long
ptrString = inet_ntoa(Address)
GetIPFromAddress = GetStrFromPtrA(ptrString)
End Function
Public Function GetStrFromPtrA(Byval lpszA As Long) As String
GetStrFromPtrA = String$(lstrlenA(Byval lpszA), 0)
Call lstrcpyA(Byval GetStrFromPtrA, Byval lpszA)
End Function
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