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Moved Citrix handler to separate class

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Jakob A. Dam 2015-04-09 09:07:00 +02:00 • committed by Jakob Aarøe Dam
parent 9d50d9ca7c
commit fd9c8db357
3 changed files with 282 additions and 274 deletions
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296
CICRadarR/CICRadarR.vb
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@ -14,30 +14,32 @@ Public Class CICRadarR
Public Shared LDAPDomain As String = "" Public Shared LDAPDomain As String = ""
Public Shared ADField As String = "" Public Shared ADField As String = ""
Public Shared ADMailField As String = "" Public Shared ADMailField As String = ""
Public Shared EnableOTP As Boolean
' TODO: What this? ' TODO: What this?
Public Shared encCode As String = "gewsyy#sjs2!" Public Shared encCode As String = "gewsyy#sjs2!"
Private DEBUG As Boolean Private Shared DEBUG As Boolean
Public Shared EnableOTP As Boolean
Private Log As New LogWriter Private Shared UserAccessLog As New LogWriter
Private UserAccessLog As New LogWriter Private Shared Log As New LogWriter
Private secrets As NASAuthList Private secrets As NASAuthList
Private radius1812 As RADIUSServer Private radius1812 As RADIUSServer
Private radius1645 As RADIUSServer Private radius1645 As RADIUSServer
Private userHash As New Hashtable Private userHash As New Hashtable
Private packetHash As New Hashtable Private packetHash As New Hashtable
Private clientHash As New Hashtable Private clientHash As New Hashtable
Private NetBiosDomain As String = ""
Private Provider As String = "" Public Shared NetBiosDomain As String = ""
Private Shared Provider As String = ""
Private ModemType As String = "" Private Shared ModemType As String = ""
Private ComPort As String = "" Private Shared ComPort As String = ""
Private SmsC As String = "" Private Shared SmsC As String = ""
Private MailServer As String = "" Private Shared MailServer As String = ""
Private SenderEmail As String = "" Private Shared SenderEmail As String = ""
Private TSGW As String = "" Private TSGW As String = ""
Private TSGWSessionIdHash As New Hashtable Private TSGWSessionIdHash As New Hashtable
@ -45,11 +47,11 @@ Public Class CICRadarR
Private TSGWLaunchIdTimeStampHash As New Hashtable Private TSGWLaunchIdTimeStampHash As New Hashtable
Private TSGWFirstLoginHash As New Hashtable ' Ensure that only one sms is send even if radius need to re-authenticate. Private TSGWFirstLoginHash As New Hashtable ' Ensure that only one sms is send even if radius need to re-authenticate.
Private TSGWFirstLoginTimeStampHash As New Hashtable ' Ensure that only one sms is send even if radius need to re-authenticate. Private TSGWFirstLoginTimeStampHash As New Hashtable ' Ensure that only one sms is send even if radius need to re-authenticate.
Public Shared SessionTimeOut As Integer = 30 ' in minutes Public Shared SessionTimeOut As Integer = 30 ' in minutes
Public Shared LaunchTimeOut As Integer = 30 ' in seconds Public Shared LaunchTimeOut As Integer = 30 ' in seconds
Private EnableSMS As Boolean = False Public Shared EnableSMS As Boolean = False
Private EnableEmail As Boolean = False Public Shared EnableEmail As Boolean = False
Protected Overrides Sub OnStart(ByVal args() As String) Protected Overrides Sub OnStart(ByVal args() As String)
@ -125,13 +127,13 @@ Public Class CICRadarR
ProcessPacket(radius1645, packet) ProcessPacket(radius1645, packet)
End Sub End Sub
Private Sub AccessLog(ByVal message) Public Shared Sub AccessLog(ByVal message)
If DEBUG = True Then If DEBUG = True Then
UserAccessLog.WriteLog(Now & ": DEBUG: " & message) UserAccessLog.WriteLog(Now & ": DEBUG: " & message)
End If End If
End Sub End Sub
Private Sub ServerLog(ByVal message) Public Shared Sub ServerLog(ByVal message)
Log.WriteLog(Now & ":" & message) Log.WriteLog(Now & ":" & message)
End Sub End Sub
@ -141,18 +143,14 @@ Public Class CICRadarR
Exit Sub Exit Sub
End If End If
Dim muuh As New VendorSpecificAttribute(VendorSpecificType.Generic, "LAUNCH") Dim handler
Dim atts As New RADIUSAttributes
muuh.SetRADIUSAttribute(atts)
If TSGW = "1" Then If TSGW = "1" Then
Dim rds As New RDSHandler(packet) handler = New RDSHandler(packet)
rds.ProcessRequest()
'ProcessPacketTSGW(server, packet)
Else Else
ProcessPacketCSG(server, packet) handler = New CitrixHandler(packet)
End If End If
handler.ProcessRequest()
End Sub End Sub
@ -559,248 +557,6 @@ Public Class CICRadarR
End Sub End Sub
Private Sub ProcessPacketCSG(ByVal server As RADIUSServer, ByVal packet As RADIUSPacket)
' Let's take a look at just authentication requests,
' and drop other requests silently ...
If packet.Code <> RadiusPacketCode.AccessRequest Then
AccessLog("Not a valid radius packet.. Drop!")
Exit Sub
End If
' Let's see if we have a username present ...
Dim username As RADIUSAttribute = packet.Attributes.GetFirstAttribute(RadiusAttributeType.UserName)
Dim pass As RADIUSAttribute = packet.Attributes.GetFirstAttribute(RadiusAttributeType.UserPassword)
Dim sid As String = ""
Dim mobile As String = ""
Dim smsCode As String = ""
Dim UserEmail As String = ""
' If an attribute of a particular type is not found, the function
' will return Nothing.
If username Is Nothing Then
' Technically, this case is against RFC, so ... drop.
AccessLog("Not a valid radius packet.. No username pressent.. Drop!")
Exit Sub
End If
AccessLog("Processing packet for user: " & username.ToString)
'If packetHash.ContainsKey(username.GetString & "_" & pass.GetString) Then
' Exit Sub
'End If
Dim existState As Boolean = packet.Attributes.AttributeExists(RadiusAttributeType.State)
AccessLog("Packet contains a state attribute? State=" & existState.ToString)
If existState = True Then ' Ok we have at packet with the State attribute set. Check if we can identify the authtentication packet.
Dim state As String = packet.Attributes.GetFirstAttribute(RadiusAttributeType.State).ToString
AccessLog("Packet contains a state attribute State=" & state)
Dim UserDomain As String = ""
'lets see if user login using upd or UPN name
Dim sUserName As String = username.ToString
Dim sPassword As String = packet.UserPassword
AccessLog("SMSToken supplied by user: " & sUserName)
sid = ""
If InStr(sUserName, "@") > 0 Then 'UPN
UserDomain = sUserName
Else 'UPD
'read domain from Hashtable
UserDomain = NetBiosDomain & "\" & sUserName
End If
sid = EncDec.Encrypt(UserDomain & "_" & packet.UserPassword, encCode)
AccessLog("Checking for userHash " & sid)
If sid = state Then
packet.AcceptAccessRequest()
Else
packet.RejectAccessRequest()
End If
Else ' process the first login
' packetHash.Add(username.GetString & "_" & pass.GetString, 0)
' Console.WriteLine(username.GetString & " is trying to log in ... ")
' Note that an attribute can represent a string, number, IP, etc.
' RADAR will not guess that automatically, so use the appropriate
' function according to the attribute you're trying to read. Otherwise,
' the Value property is just a bunch of bytes as received in the
' RADIUS packet.
'Now lets get some information from ad if password is valid
Dim success As Boolean = False
Dim UserDomain As String = ""
'lets see if user login using upd or UPN name
Dim sUserName As String = username.ToString
Dim sPassword As String = packet.UserPassword
If InStr(sUserName, "@") > 0 Then 'UPN
UserDomain = sUserName
Else 'UPD
'read domain from Hashtable
UserDomain = NetBiosDomain & "\" & sUserName
End If
AccessLog("User " & UserDomain & " is trying to log in ...")
Try
Dim dirEntry As New DirectoryEntry("LDAP://" & LDAPDomain, UserDomain, sPassword)
Dim obj As Object = dirEntry.NativeObject
Dim search As New DirectorySearcher(dirEntry)
If InStr(sUserName, "@") > 0 Then
search.Filter = "(userPrincipalName=" + sUserName + ")"
Else
search.Filter = "(SAMAccountName=" + sUserName + ")"
End If
'Load the Properties we need from AD
search.PropertiesToLoad.Add("distinguishedName")
'search.PropertiesToLoad.Add("primaryTelexNumber")
If EnableOTP = True Then
If EnableEmail = True Then
search.PropertiesToLoad.Add(ADMailField)
End If
If EnableSMS = True Then
search.PropertiesToLoad.Add(ADField)
End If
End If
' Time to find out if user entered the correct username and pasword
AccessLog("Trying to authenticate user agains Active Directory using te following parameters: " & "LDAPPAth: " & "LDAP://" & LDAPDomain & ", Username: " & UserDomain & ", Password: " & sPassword)
Dim result As SearchResult = search.FindOne()
'Get the setting form AD. Yes we uses the field primaryTelexNumber, for who the f... still users telex. (I bet half the people reading this code don't even know what a telex is!)
'Dim code As String = DirectCast(result.Properties("primaryTelexNumber")(0), String)
'Dim aCode As String() = code.Split("/")
'Dim userLdap As String = "LDAP://" & LDAPPath & "/" & result.Properties("distinguishedName")(0)
'Dim userEntry As New DirectoryEntry(userLdap, UserDomain, sPassword)
If EnableOTP = True Then
smsCode = GenerateCode()
' REMEMBER to put at check for empty phone string
If EnableEmail = True Then
Try
UserEmail = DirectCast(result.Properties(ADMailField)(0), String)
If UserEmail.Trim.Length = 0 Or InStr(UserEmail, "@") = 0 Then
success = False
AccessLog("Unable to find correct email for user " & UserDomain)
Else
success = True
End If
Catch
AccessLog("Unable to find correct email for user " & UserDomain)
success = False
End Try
End If
If EnableSMS = True Then
Try
mobile = DirectCast(result.Properties(ADField)(0), String)
mobile = Replace(mobile, "+", "")
If mobile.Trim.Length = 0 Then
success = False
AccessLog("Unable to find correct phone number for user " & UserDomain)
Else
success = True
End If
Catch
AccessLog("Unable to find correct phone number for user " & UserDomain)
success = False
End Try
End If
sid = EncDec.Encrypt(UserDomain & "_" & smsCode, encCode) 'generate unique code
End If
' sid = UserDomain & "_" & smsCode
'userEntry.Properties("primaryTelexNumber").Value = aCode(0) & "/" & smsCode & "/" & aCode(2) & "/" & aCode(3)
'userEntry.CommitChanges()
'userEntry.Dispose()
If 1 = 1 Then ' check if smscode is disabled for the user (Need to write this code)
'If userHash.ContainsKey(sid) Then
' userHash(sid) = sPassword
' If DEBUG = True Then
' AccessLog("Updating userHash " & sid)
' End If
'Else
' userHash.Add(sid, sPassword)
' If DEBUG = True Then
' AccessLog("Adding userHash " & sid)
' End If
'End If
' new code stored in AD now send it to the users phone
' Console.WriteLine(smsCode)
success = True
Else
success = False
End If
Catch
AccessLog("Failed to authenticate user agains Active Directory using the following parameters: " & "LDAPPAth: " & "LDAP://" & LDAPDomain & ", Username: " & UserDomain & ", Password: " & sPassword)
success = False
End Try
Dim attributes As New RADIUSAttributes
If success Then ' Yay! Someone guess the password ...
AccessLog("User " & UserDomain & " authenticated agains Active Directory")
If EnableOTP = True Then
Dim attr As New RADIUSAttribute(RadiusAttributeType.ReplyMessage, "SMS Token")
attributes.Add(attr)
Dim state As New RADIUSAttribute(RadiusAttributeType.State, sid)
attributes.Add(state)
' Console.WriteLine("len " & packet.Authenticator.Length.ToString)
server.SendAsResponse( _
New RADIUSPacket(RadiusPacketCode.AccessChallenge, _
packet.Identifier, attributes, _
packet.EndPoint), _
packet.Authenticator)
If EnableSMS = True Then
AccessLog("Sending access token: " & smsCode & " to phonenumber " & mobile)
Call SendSMS(mobile, smsCode)
End If
If EnableEmail = True Then
AccessLog("Sending access token: " & smsCode & " to email " & UserEmail)
Call SendEmail(UserEmail, smsCode)
End If
Else
AccessLog("One time Password not enabled, so we let the user in")
packet.AcceptAccessRequest()
End If
' packetHash.Remove(username.GetString & "_" & pass.GetString)
Else ' Wrong username / password ...
AccessLog("User " & UserDomain & " failed to authenticate against Active Directory")
Dim pk As New RADIUSPacket(RadiusPacketCode.AccessReject, packet.Identifier, Nothing, packet.EndPoint)
server.SendAsResponse(pk, packet.Authenticator)
' FYI ... if no additional attributes need to be added
' to the response, you can sepcify Nothing instead of
' creating an empty RADIUSAttributes object.
' packetHash.Remove(username.GetString & "_" & pass.GetString)
End If
End If
End Sub
Public Shared Function GenerateCode() As String Public Shared Function GenerateCode() As String
@ -910,7 +666,7 @@ Public Class CICRadarR
Return Path.GetDirectoryName([Assembly].GetExecutingAssembly().Location) Return Path.GetDirectoryName([Assembly].GetExecutingAssembly().Location)
End Function End Function
Public Function SendSMS(ByVal number As String, ByVal passcode As String) As String Public Shared Function SendSMS(ByVal number As String, ByVal passcode As String) As String
' test if using online sms provider or local modem ' test if using online sms provider or local modem
If ModemType = 1 Then ' local modem If ModemType = 1 Then ' local modem
@ -957,7 +713,7 @@ Public Class CICRadarR
End Function End Function
Public Function SendEmail(email As String, passcode As String) As String Public Shared Function SendEmail(email As String, passcode As String) As String
Dim mail As New MailMessage() Dim mail As New MailMessage()

251
CICRadarR/handlers/CitrixHandler.vb Normal file
View file

@ -0,0 +1,251 @@
Imports System.DirectoryServices
' TODO: I don't use this! It's a leftover, moved out of the way
' from the CICRadarR.vb
'
' Look in RDSHandler how this should be refactored.
Public Class CitrixHandler
Public Sub New(packet As RADIUSPacket)
End Sub
Private Sub ProcessPacketCSG(ByVal server As RADIUSServer, ByVal packet As RADIUSPacket)
' Let's take a look at just authentication requests,
' and drop other requests silently ...
If packet.Code <> RadiusPacketCode.AccessRequest Then
CICRadarR.AccessLog("Not a valid radius packet.. Drop!")
Exit Sub
End If
' Let's see if we have a username present ...
Dim username As RADIUSAttribute = packet.Attributes.GetFirstAttribute(RadiusAttributeType.UserName)
Dim pass As RADIUSAttribute = packet.Attributes.GetFirstAttribute(RadiusAttributeType.UserPassword)
Dim sid As String = ""
Dim mobile As String = ""
Dim smsCode As String = ""
Dim UserEmail As String = ""
' If an attribute of a particular type is not found, the function
' will return Nothing.
If username Is Nothing Then
' Technically, this case is against RFC, so ... drop.
CICRadarR.AccessLog("Not a valid radius packet.. No username pressent.. Drop!")
Exit Sub
End If
CICRadarR.AccessLog("Processing packet for user: " & username.ToString)
'If packetHash.ContainsKey(username.GetString & "_" & pass.GetString) Then
' Exit Sub
'End If
Dim existState As Boolean = packet.Attributes.AttributeExists(RadiusAttributeType.State)
CICRadarR.AccessLog("Packet contains a state attribute? State=" & existState.ToString)
If existState = True Then ' Ok we have at packet with the State attribute set. Check if we can identify the authtentication packet.
Dim state As String = packet.Attributes.GetFirstAttribute(RadiusAttributeType.State).ToString
CICRadarR.AccessLog("Packet contains a state attribute State=" & state)
Dim UserDomain As String = ""
'lets see if user login using upd or UPN name
Dim sUserName As String = username.ToString
Dim sPassword As String = packet.UserPassword
CICRadarR.AccessLog("SMSToken supplied by user: " & sUserName)
sid = ""
If InStr(sUserName, "@") > 0 Then 'UPN
UserDomain = sUserName
Else 'UPD
'read domain from Hashtable
UserDomain = CICRadarR.NetBiosDomain & "\" & sUserName
End If
sid = EncDec.Encrypt(UserDomain & "_" & packet.UserPassword, CICRadarR.encCode)
CICRadarR.AccessLog("Checking for userHash " & sid)
If sid = state Then
packet.AcceptAccessRequest()
Else
packet.RejectAccessRequest()
End If
Else ' process the first login
' packetHash.Add(username.GetString & "_" & pass.GetString, 0)
' Console.WriteLine(username.GetString & " is trying to log in ... ")
' Note that an attribute can represent a string, number, IP, etc.
' RADAR will not guess that automatically, so use the appropriate
' function according to the attribute you're trying to read. Otherwise,
' the Value property is just a bunch of bytes as received in the
' RADIUS packet.
'Now lets get some information from ad if password is valid
Dim success As Boolean = False
Dim UserDomain As String = ""
'lets see if user login using upd or UPN name
Dim sUserName As String = username.ToString
Dim sPassword As String = packet.UserPassword
If InStr(sUserName, "@") > 0 Then 'UPN
UserDomain = sUserName
Else 'UPD
'read domain from Hashtable
UserDomain = CICRadarR.NetBiosDomain & "\" & sUserName
End If
CICRadarR.AccessLog("User " & UserDomain & " is trying to log in ...")
Try
Dim dirEntry As New DirectoryEntry("LDAP://" & CICRadarR.LDAPDomain, UserDomain, sPassword)
Dim obj As Object = dirEntry.NativeObject
Dim search As New DirectorySearcher(dirEntry)
If InStr(sUserName, "@") > 0 Then
search.Filter = "(userPrincipalName=" + sUserName + ")"
Else
search.Filter = "(SAMAccountName=" + sUserName + ")"
End If
'Load the Properties we need from AD
search.PropertiesToLoad.Add("distinguishedName")
'search.PropertiesToLoad.Add("primaryTelexNumber")
If CICRadarR.EnableOTP = True Then
If CICRadarR.EnableEmail = True Then
search.PropertiesToLoad.Add(CICRadarR.ADMailField)
End If
If CICRadarR.EnableSMS = True Then
search.PropertiesToLoad.Add(CICRadarR.ADField)
End If
End If
' Time to find out if user entered the correct username and pasword
CICRadarR.AccessLog("Trying to authenticate user agains Active Directory using te following parameters: " & "LDAPPAth: " & "LDAP://" & CICRadarR.LDAPDomain & ", Username: " & UserDomain & ", Password: " & sPassword)
Dim result As SearchResult = search.FindOne()
'Get the setting form AD. Yes we uses the field primaryTelexNumber, for who the f... still users telex. (I bet half the people reading this code don't even know what a telex is!)
'Dim code As String = DirectCast(result.Properties("primaryTelexNumber")(0), String)
'Dim aCode As String() = code.Split("/")
'Dim userLdap As String = "LDAP://" & LDAPPath & "/" & result.Properties("distinguishedName")(0)
'Dim userEntry As New DirectoryEntry(userLdap, UserDomain, sPassword)
If CICRadarR.EnableOTP = True Then
smsCode = CICRadarR.GenerateCode()
' REMEMBER to put at check for empty phone string
If CICRadarR.EnableEmail = True Then
Try
UserEmail = DirectCast(result.Properties(CICRadarR.ADMailField)(0), String)
If UserEmail.Trim.Length = 0 Or InStr(UserEmail, "@") = 0 Then
success = False
CICRadarR.AccessLog("Unable to find correct email for user " & UserDomain)
Else
success = True
End If
Catch
CICRadarR.AccessLog("Unable to find correct email for user " & UserDomain)
success = False
End Try
End If
If CICRadarR.EnableSMS = True Then
Try
mobile = DirectCast(result.Properties(CICRadarR.ADField)(0), String)
mobile = Replace(mobile, "+", "")
If mobile.Trim.Length = 0 Then
success = False
CICRadarR.AccessLog("Unable to find correct phone number for user " & UserDomain)
Else
success = True
End If
Catch
CICRadarR.AccessLog("Unable to find correct phone number for user " & UserDomain)
success = False
End Try
End If
sid = EncDec.Encrypt(UserDomain & "_" & smsCode, CICRadarR.encCode) 'generate unique code
End If
' sid = UserDomain & "_" & smsCode
'userEntry.Properties("primaryTelexNumber").Value = aCode(0) & "/" & smsCode & "/" & aCode(2) & "/" & aCode(3)
'userEntry.CommitChanges()
'userEntry.Dispose()
If 1 = 1 Then ' check if smscode is disabled for the user (Need to write this code)
'If userHash.ContainsKey(sid) Then
' userHash(sid) = sPassword
' If DEBUG = True Then
' CICRadarR.AccessLog("Updating userHash " & sid)
' End If
'Else
' userHash.Add(sid, sPassword)
' If DEBUG = True Then
' CICRadarR.AccessLog("Adding userHash " & sid)
' End If
'End If
' new code stored in AD now send it to the users phone
' Console.WriteLine(smsCode)
success = True
Else
success = False
End If
Catch
CICRadarR.AccessLog("Failed to authenticate user agains Active Directory using the following parameters: " & "LDAPPAth: " & "LDAP://" & CICRadarR.LDAPDomain & ", Username: " & UserDomain & ", Password: " & sPassword)
success = False
End Try
Dim attributes As New RADIUSAttributes
If success Then ' Yay! Someone guess the password ...
CICRadarR.AccessLog("User " & UserDomain & " authenticated agains Active Directory")
If CICRadarR.EnableOTP = True Then
Dim attr As New RADIUSAttribute(RadiusAttributeType.ReplyMessage, "SMS Token")
attributes.Add(attr)
Dim state As New RADIUSAttribute(RadiusAttributeType.State, sid)
attributes.Add(state)
' Console.WriteLine("len " & packet.Authenticator.Length.ToString)
server.SendAsResponse( _
New RADIUSPacket(RadiusPacketCode.AccessChallenge, _
packet.Identifier, attributes, _
packet.EndPoint), _
packet.Authenticator)
If CICRadarR.EnableSMS = True Then
CICRadarR.AccessLog("Sending access token: " & smsCode & " to phonenumber " & mobile)
Call CICRadarR.SendSMS(mobile, smsCode)
End If
If CICRadarR.EnableEmail = True Then
CICRadarR.AccessLog("Sending access token: " & smsCode & " to email " & UserEmail)
Call CICRadarR.SendEmail(UserEmail, smsCode)
End If
Else
CICRadarR.AccessLog("One time Password not enabled, so we let the user in")
packet.AcceptAccessRequest()
End If
' packetHash.Remove(username.GetString & "_" & pass.GetString)
Else ' Wrong username / password ...
CICRadarR.AccessLog("User " & UserDomain & " failed to authenticate against Active Directory")
Dim pk As New RADIUSPacket(RadiusPacketCode.AccessReject, packet.Identifier, Nothing, packet.EndPoint)
server.SendAsResponse(pk, packet.Authenticator)
' FYI ... if no additional attributes need to be added
' to the response, you can sepcify Nothing instead of
' creating an empty RADIUSAttributes object.
' packetHash.Remove(username.GetString & "_" & pass.GetString)
End If
End If
End Sub
End Class

9
CICRadarR/handlers/RDSHandler.vb
View file

@ -209,9 +209,11 @@ Public Class RDSHandler
tokenTimestamps(mUsername) = Now tokenTimestamps(mUsername) = Now
If mUseSMSFactor Then If mUseSMSFactor Then
Console.WriteLine("SMS: ") Console.WriteLine("TODO: Send SMS")
ElseIf mUseEmailFactor Then End If
Console.WriteLine("Email: ")
If mUseEmailFactor Then
Console.WriteLine("TODO: Send Email")
End If End If
Dim attributes As New RADIUSAttributes Dim attributes As New RADIUSAttributes
@ -230,7 +232,6 @@ Public Class RDSHandler
Dim ldapDomain As String = CICRadarR.LDAPDomain Dim ldapDomain As String = CICRadarR.LDAPDomain
Console.WriteLine("Authenticating: LDAPPAth: " & "LDAP://" & ldapDomain & ", Username: " & mUsername) Console.WriteLine("Authenticating: LDAPPAth: " & "LDAP://" & ldapDomain & ", Username: " & mUsername)
Console.WriteLine("Passowrd: " & password)
Dim dirEntry As New DirectoryEntry("LDAP://" & ldapDomain, mUsername, password) Dim dirEntry As New DirectoryEntry("LDAP://" & ldapDomain, mUsername, password)
Dim obj As Object = dirEntry.NativeObject Dim obj As Object = dirEntry.NativeObject