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09.01.2008 at 07:52PM PDT, ID: 23694859
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Adding route for remote subnet using VBScript & IPCONFIG under Windows Vista

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9.3
Zones:

VB Script, Virtual Private Networking (VPN), Windows Vista

Tags:

Microsoft, VBScript, VBScript, Not applicable, http://www.members.optushome.com.au/~wskwok/poptop_ads_howto_11.htm
I wish to first give credit to the gentleman who wrote the original script, as it works beautifully under Windows XP: http://www.members.optushome.com.au/~wskwok/poptop_ads_howto_11.htm

The script is written to produce an ADD ROUTE entry for a split tunnel setup, following a successful PPTP VPN connection. VPN client IP addresses are assigned dynamically by the VPN gateway. Under Windows XP, the script accurately parses the IPCONFIG TXT file output to obtain the PPP adapter IP address and adds a route to the subnet which is specified in the 6th line of the script.

Under Windows Vista, the IPCONFIG output is formatted somewhat differently, and the script incorrectly creates a route using the Wireless LAN adapter IPv4 address instead of the PPP address. Note that I've not tested its behavior with an active LAN connection as opposed to wireless, which would further change the IPCONFIG output. I can see that the working script (for Win XP) finds the PPP adapter section and correct IP address to use for the variable and successfully adds the new route.

Under Vista however, it will not use the correct PPP address even when replacing the string 'IP Address' with 'IPv4 Address', and is apparently unable to determine the correct section of the file in which to obtain the the PPP address. I also see that the PPP adapter section appears first in the output TXT under Vista, as opposed to it being the 2nd section output under Windows XP.

I'm hoping a VB pro can determine how to make the script smart enough to create a route under Windows Vista as well as XP because of the different IPCONFIG output format.

Thanks!

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'WINDOWS XP SCRIPT BEGIN (Working)
Option Explicit
Dim IP_Address
Dim TmpFile : TmpFile = "c:\ip.txt"
Dim route1
 
route1 = "route add 192.168.2.0 mask 255.255.255.0 "
 
SaveIP
IP_Address = GetIP()
route1 = route1 & IP_Address
AddRoute
 
Sub SaveIP
  Dim ws : Set ws = CreateObject("WScript.Shell")
  ws.run "%comspec% /c ipconfig > " & TmpFile, 0, True
  Set ws = Nothing
End Sub
 
Function GetIP()
  Dim fso : Set fso = CreateObject("Scripting.FileSystemObject")
  Dim re : Set re = New RegExp
  re.Global = TRUE
 
  Dim file, fileline, matches
  Dim pppsection : pppsection = FALSE
 
  If fso.FileExists(TmpFile) Then
    Set file = fso.OpenTextFile(TmpFile)
 
    Do While Not file.AtEndOfStream
      fileline = file.ReadLine
 
      If Not pppsection Then
        If left(fileline,3) = "PPP" Then
          pppsection = TRUE
        End If
      Else
        re.Pattern = "IP Address[\. ]+: "
        If re.Test(fileline) Then
          matches = split(fileline,":")
          GetIP = right(matches(1),len(matches(1))-1)
        End If
      End If
 
    Loop
    file.Close
  End If
 
  Set re = Nothing
  Set fso = Nothing
End Function
 
Sub AddRoute
  Dim ws : Set ws = CreateObject("WScript.Shell")
  ws.run "%comspec% /c " & route1, 0, True
  Set ws = Nothing
End Sub
'WINDOWS XP SCRIPT END
 
'WINDOWS VISTA SCRIPT BEGIN (Not Working)
Option Explicit
Dim IP_Address
Dim TmpFile : TmpFile = "c:\ip.txt"
Dim route1
 
route1 = "route add 192.168.2.0 mask 255.255.255.0 "
 
SaveIP
IP_Address = GetIP()
route1 = route1 & IP_Address
AddRoute
 
Sub SaveIP
  Dim ws : Set ws = CreateObject("WScript.Shell")
  ws.run "%comspec% /c ipconfig > " & TmpFile, 0, True
  Set ws = Nothing
End Sub
 
Function GetIP()
  Dim fso : Set fso = CreateObject("Scripting.FileSystemObject")
  Dim re : Set re = New RegExp
  re.Global = TRUE
 
  Dim file, fileline, matches
  Dim pppsection : pppsection = FALSE
 
  If fso.FileExists(TmpFile) Then
    Set file = fso.OpenTextFile(TmpFile)
 
    Do While Not file.AtEndOfStream
      fileline = file.ReadLine
 
      If Not pppsection Then
        If left(fileline,3) = "PPP" Then
          pppsection = TRUE
        End If
      Else
        re.Pattern = "IPv4 Address[\. ]+: "
        If re.Test(fileline) Then
          matches = split(fileline,":")
          GetIP = right(matches(1),len(matches(1))-1)
        End If
      End If
 
    Loop
    file.Close
  End If
 
  Set re = Nothing
  Set fso = Nothing
End Function
 
Sub AddRoute
  Dim ws : Set ws = CreateObject("WScript.Shell")
  ws.run "%comspec% /c " & route1, 0, True
  Set ws = Nothing
End Sub
'WINDOWS VISTA SCRIPT END
 
WINDOWS XP IPCONFIG OUTPUT
 
Windows IP Configuration
 
Ethernet adapter Wireless Network Connection:
 
        Connection-specific DNS Suffix  . : elcs.local
        IP Address. . . . . . . . . . . . : 192.168.0.27
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.0.1
 
PPP adapter KKOS VPN (PPTP):
 
        Connection-specific DNS Suffix  . : KKOS.local
        IP Address. . . . . . . . . . . . : 192.168.13.51
        Subnet Mask . . . . . . . . . . . : 255.255.255.255
        Default Gateway . . . . . . . . . : 
 
WINDOWS VISTA IPCONFIG OUTPUT
 
Windows IP Configuration
 
PPP adapter KKOS Mobile VPN (PPTP):
 
   Connection-specific DNS Suffix  . : KKOS.LOCAL
   IPv4 Address. . . . . . . . . . . : 192.168.13.52
   Subnet Mask . . . . . . . . . . . : 255.255.255.255
   Default Gateway . . . . . . . . . : 
 
Ethernet adapter Watchguard VPN Virtual Adapter:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : KKOS.LOCAL
 
Wireless LAN adapter Wireless Network Connection:
 
   Connection-specific DNS Suffix  . : elcs.local
   Link-local IPv6 Address . . . . . : fe80::c03a:8342:dacb:575c%11
   IPv4 Address. . . . . . . . . . . : 192.168.0.15
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.1
 
Ethernet adapter Local Area Connection:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
 
Tunnel adapter Local Area Connection*:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : elcs.local
 
Tunnel adapter Local Area Connection* 8:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
 
Tunnel adapter Local Area Connection* 11:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : KKOS.LOCAL
 
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Accepted Solution by RobSampson:

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Author Comment by KKOS-KS:

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Expert Comment by RobSampson:

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