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Récupérer l'adresse IP (Internet Protocol)

1ère méthode:

Sub monIP()
ID = Shell("C:\windows\winipcfg /batch C:\windows\bureau\IPaMoi.txt", 1)
Set FS = CreateObject("Scripting.FileSystemObject")
Set f = FS.GetFile("C:\windows\bureau\IPaMoi.txt")
Set ts = f.OpenAsTextStream(1, 0)
For i = 1 To 6
s = ts.Readline
Next
MsgBox s
End Sub

'A vrai dire je n'ai plus en tête le moyen de lire la ligne 6 sans boucler.
'Attention aux espaces : un entre winipcfg et /batch, un entre batch et le
'chemin du fichier.
'Ca renvoir un truc du genre "Adresse IP. . . . . . . . . : 195.42.150.156 "
'à traiter en virant les premiers caractères pour rester avec l'adresse
'proprement dite.
'Eric Jeanne

=========================
2ème méthode:

'Une autre approche, par les API. C'est nettement plus compliqué que le 'FileSystemObject :-)
'Mais il semble que cela renvoie l'adresse "standard" pour un PC hors connexion
'(127.0.0.1), alors que winipcfg renvoie dans ce cas 0.0.0.0
'Ceci dit, cette différence n'a peut-être pas grande importance...
'Le code est à recopier dans un module standard. Il n'est pas de moi, mais je
'suis incapable de dire qui en est l'auteur :(
'En prime, une fonction pour récupérer le nom du PC "hôte", qui passe par un
'autre chemin que l'API habituellement utilisée (GetComputerName).
'FS

Option Explicit

Public Const MAX_WSADescription = 256
Public Const MAX_WSASYSStatus = 128
Public Const ERROR_SUCCESS As Long = 0
Public Const WS_VERSION_REQD As Long = &H101
Public Const WS_VERSION_MAJOR As Long = WS_VERSION_REQD \ &H100 And &HFF&
Public Const WS_VERSION_MINOR As Long = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD As Long = 1
Public Const SOCKET_ERROR As Long = -1

Public Type HOSTENT
hName As Long
hAliases As Long
hAddrType As Integer
hLen As Integer
hAddrList As Long
End Type

Public Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To MAX_WSADescription) As Byte
szSystemStatus(0 To MAX_WSASYSStatus) As Byte
wMaxSockets As Integer
wMaxUDPDG As Integer
dwVendorInfo As Long
End Type

Public Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long

Public Declare Function WSAStartup Lib "WSOCK32.DLL" _
(ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long

Public Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long

Public Declare Function gethostname Lib "WSOCK32.DLL" _
(ByVal szHost As String, ByVal dwHostLen As Long) As Long

Public Declare Function gethostbyname Lib "WSOCK32.DLL" _
(ByVal szHost As String) As Long

Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
(hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)

'*********************
Sub test()
MsgBox GetIPAddress
MsgBox GetIPHostName
End Sub
'**********************

Public Function GetIPAddress() As String

Dim sHostName As String * 256
Dim lpHost As Long
Dim HOST As HOSTENT
Dim dwIPAddr As Long
Dim tmpIPAddr() As Byte
Dim i As Integer
Dim sIPAddr As String

If Not SocketsInitialize() Then
GetIPAddress = ""
Exit Function
End If

If gethostname(sHostName, 256) = SOCKET_ERROR Then
GetIPAddress = ""
MsgBox "Windows Sockets error " & Str$(WSAGetLastError()) & _
" has occurred. Unable to successfully get Host Name."
SocketsCleanup
Exit Function
End If

sHostName = Trim$(sHostName)
lpHost = gethostbyname(sHostName)

If lpHost = 0 Then
GetIPAddress = ""
MsgBox "Windows Sockets are not responding. " & _
"Unable to successfully get Host Name."
SocketsCleanup
Exit Function
End If

CopyMemory HOST, lpHost, Len(HOST)
CopyMemory dwIPAddr, HOST.hAddrList, 4

ReDim tmpIPAddr(1 To HOST.hLen)

CopyMemory tmpIPAddr(1), dwIPAddr, HOST.hLen

For i = 1 To HOST.hLen
sIPAddr = sIPAddr & tmpIPAddr(i) & "."
Next

GetIPAddress = Mid$(sIPAddr, 1, Len(sIPAddr) - 1)
SocketsCleanup

End Function

Public Function GetIPHostName() As String
Dim sHostName As String * 256

If Not SocketsInitialize() Then
GetIPHostName = ""
Exit Function
End If

If gethostname(sHostName, 256) = SOCKET_ERROR Then
GetIPHostName = ""
MsgBox "Windows Sockets error " & Str$(WSAGetLastError()) & _
" has occurred. Unable to successfully get Host Name."
SocketsCleanup
Exit Function
End If

GetIPHostName = Left$(sHostName, InStr(sHostName, Chr(0)) - 1)
SocketsCleanup

End Function

Public Function HiByte(ByVal wParam As Integer)
HiByte = wParam \ &H100 And &HFF&
End Function

Public Function LoByte(ByVal wParam As Integer)
LoByte = wParam And &HFF&
End Function

Public Sub SocketsCleanup()
If WSACleanup() <> ERROR_SUCCESS Then
MsgBox "Socket error occurred in Cleanup."
End If
End Sub

Public Function SocketsInitialize() As Boolean
Dim WSAD As WSADATA
Dim sLoByte As String
Dim sHiByte As String

If WSAStartup(WS_VERSION_REQD, WSAD) <> ERROR_SUCCESS Then
MsgBox "The 32-bit Windows Socket is not responding."
SocketsInitialize = False
Exit Function
End If

If WSAD.wMaxSockets < MIN_SOCKETS_REQD Then
MsgBox "This application requires a minimum of " & _
CStr(MIN_SOCKETS_REQD) & " supported sockets."
SocketsInitialize = False
Exit Function
End If

If LoByte(WSAD.wVersion) < WS_VERSION_MAJOR Or _
(LoByte(WSAD.wVersion) = WS_VERSION_MAJOR And _
HiByte(WSAD.wVersion) < WS_VERSION_MINOR) Then
sHiByte = CStr(HiByte(WSAD.wVersion))
sLoByte = CStr(LoByte(WSAD.wVersion))
MsgBox "Sockets version " & sLoByte & "." & sHiByte & _
" is not supported by 32-bit Windows Sockets."
SocketsInitialize = False
Exit Function
End If

'must be OK, so lets do it
SocketsInitialize = True

End Function

=========================
D'autres méthodes:

Declare Function GetComputerName& Lib "kernel32" _
Alias "GetComputerNameA" (ByVal lbbuffer As String, nsize As Long)

Sub TestGetComputerName()
MsgBox ReturnName
MsgBox OSMachineName
MsgBox ReturnComputerName
End Sub

Function ReturnName()
'Trevor Shuttleworth, mpep
Dim z As String * 64
Call GetComputerName(z, 64)
ReturnName = z
End Function

Function OSMachineName() As String
'Dave Peterson, mpep
Dim Buffer As String * 256
Dim BuffLen As Long
Dim lngX As Long
Dim strCompName As String
BuffLen = 255
If GetComputerName(Buffer, BuffLen) Then _
OSMachineName = Left(Buffer, BuffLen)
End Function

Function ReturnComputerName() As String
'R. Dezan, mpfe
Dim rString As String * 255, sLen As Long, tString As String
tString = ""
On Error Resume Next
sLen = GetComputerName(rString, 255)
sLen = InStr(1, rString, Chr(0))
If sLen > 0 Then
tString = Left(rString, sLen - 1)
Else
tString = rString
End If
On Error GoTo 0
ReturnComputerName = UCase(Trim(tString))
End Function

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