VB中通过WMI控制DNS服务器，可在ASP中调用

 

在VB中要使用Scripting API for WMI，必须引用 Microsoft WMI Scripting V1.1 Library

 

下面介绍Scripting API For WMI的几个对象

 

SWbemLocator——用于取得SWbemServices对象，他代表了本地或远程计算机上名字空间的一个连接。

SWbemService——代表名字空间的一个连接，可用于处理它的部件

SWbemObject——代表一个单独的类定义或一个对象实例

SWbemOjbectSet——包括SWbemObject的集合

 

下面是DNS WMI Provider的几个对象

MicrosoftDNS_Zone——用于管理DNS服务器上的区域的类

MicrosoftDNS_AType，MicrosoftDNS_CNAMEType,MicrosoftDNS_MXType等等——管理DNS Server上的各种资源记录

 

详细的参考请见MSDN，我用的是VS.NET2003带的MSDN

Scripting API for WMI的路径是 MSDN Library--设置和系统管理--Windows Management Instrumentation(WMI)--SDK文档--WMI Reference--Scripting API For WMI

 

DNS WMI Provider的路径是 MSDN Library--网络和目录服务--域名系统(DNS)--SDK文档--DNS WMI Provider--DNS WMI Provider Reference--DNS WMI Classes

 

 

下面是代码实现

 

需要引用Microsoft Scripting Runtime和Microsoft WMI Scripting V1.1 Library，只是示例了A、MX、和CName记录的操作，还可以扩展其他资源记录的操作，也可以加上区域的操作，参考MSDN就可以了

 

 

 

Class DNSController

 

Private objService As Object

 

Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (lpVersionInformation As OSVERSIONINFO) As Long

Private Type OSVERSIONINFO

dwOSVersionInfoSize As Long

dwMajorVersion As Long

dwMinorVersion As Long

dwBuildNumber As Long

dwPlatformId As Long

szCSDVersion As String * 128

osName As String

End Type

 

 

Private Function GetWindowsVersion() As OSVERSIONINFO

Dim ver As OSVERSIONINFO

ver.dwOSVersionInfoSize = 148

GetVersionEx ver

With ver

Select Case .dwPlatformId

Case 1

Select Case .dwMinorVersion

Case 0

.osName = "Windows 95"

Case 10

.osName = "Windows 98"

Case 90

.osName = "Windows Mellinnium"

End Select

Case 2

Select Case .dwMajorVersion

Case 3

.osName = "Windows NT 3.51"

Case 4

.osName = "Windows NT 4.0"

Case 5

If .dwMinorVersion = 0 Then

.osName = "Windows 2000"

ElseIf .dwMinorVersion = 1 Then

.osName = "Windows XP"

Else

.osName = "Windows 2003"

End If

End Select

Case Else

.osName = "Failed"

End Select

End With

GetWindowsVersion = ver

End Function

 

判断操作系统，由于WMI在2003和2000上的实现略有差异，所以需要判断操作系统

Private Function IsWin2k3() As Boolean

Dim v As OSVERSIONINFO

v = GetWindowsVersion()

If v.osName = "Windows 2003" Then

IsWin2k3 = True

Else

IsWin2k3 = False

End If

End Function

 

 

 

//

// 连接到一个DNS服务器

//

// 服务器名称，可以是计算机名，也可以是IP

// 连接服务器所使用的用户名，如果是连接本机，请使用""

// 连接服务器所使用的密码，如果是连接本机，请使用""

Public Function Connect(ByVal strServer As Variant, ByVal strUserName As Variant, ByVal strPassword As Variant, ByRef errMsg As Variant) As Variant

 

On Error GoTo ll

 

Connect = True

Err.Clear

 

Dim objLocator As WbemScripting.SWbemLocator

 

Set objLocator = CreateObject("WbemScripting.SWbemLocator")

 

Set objService = objLocator.ConnectServer(strServer, "root/microsoftdns", strUserName, strPassword)

objService.Security_.ImpersonationLevel = 3

Connect = True

Exit Function

 

ll: Connect = False

errMsg = "错误 0x" & CStr(Hex(Err.Number)) & "，连接服务器 " & strServer & " 时出现错误，具体信息是" & vbCrLf & Err.Description

Set objLocator = Nothing

Set objService = Nothing

Err.Clear

 

End Function

 

 

//

// 从服务器断开连接

//

Public Sub DisConnect()

Set objService = Nothing

End Sub

 

 

 

//

// 创建区域函数

//

// 区域名称

// 区域保存的文件名称 一般是 "区域名称.dns"

// 返回错误信息

// 返回操作是否成功

Public Function CreateZone(ByVal sZoneName As Variant, ByVal sDataFileName As Variant, ByRef errMsg As Variant) As Variant

 

Set objInst = SelectRR("MicrosoftDNS_Zone", " ContainerName=" & Chr(34) & sZoneName & Chr(34), errMsg)

 

If errMsg <> "" Then

CreateZone = False

Exit Function

End If

 

If objInst.Count > 0 Then

errMsg = "该区域已存在"

CreateZone = False

End If

 

Set objInst = Nothing

 

Dim oParams As New Dictionary

oParams.Add "ZoneName", sZoneName

 

这是因为win2003和win2000系统中CreateZone函数的zoneType参数不一致 PrimaryZone的值在2000中是1，在2003中是0

If IsWin2k3() Then

zoneType = 0

Else

zoneType = 1

End If

oParams.Add "ZoneType", zoneType

 

CreateZone = Create("MicrosoftDNS_Zone", "CreateZone", oParams, errMsg)

 

Set oParams = Nothing

 

 

End Function

 

 

 

//

// 删除一个区域

//

// 要删除区域的域名

Public Function DeleteZone(ByVal sContainerName As Variant, ByRef errMsg As Variant) As Variant

DeleteZone = Delete("MicrosoftDNS_Zone", "ContainerName", sContainerName, errMsg)

End Function

 

 

 

//

// 添加A记录

//

// 主机名称

// 主机对应的IP

// 所在区域的域名

Public Function CreateARecord(ByVal sHostName As Variant, ByVal sContainerName As Variant, ByVal sIPAddress As Variant, ByRef errMsg As Variant) As Variant

 

If sHostName = "" Then

sOwnerName = sContainerName

Else

sOwnerName = sHostName & "." & sContainerName

End If

 

Set objInst = SelectRR("MicrosoftDNS_AType", " ownerName=" & Chr(34) & sOwnerName & Chr(34), errMsg)

 

If errMsg <> "" Then

CreateARecord = False

Exit Function

End If

 

If objInst.Count > 0 Then

errMsg = "该记录已存在"

CreateARecord = False

End If

 

Set objInst = Nothing

 

Dim oParams As New Dictionary

oParams.Add "ContainerName", sContainerName

 

oParams.Add "OwnerName", sOwnerName

 

oParams.Add "IPAddress", sIPAddress

 

CreateARecord = Create("MicrosoftDNS_AType", "CreateInstanceFromPropertyData", oParams, errMsg)

 

Set oParams = Nothing

 

End Function

 

//

// 修改A记录信息

//

// 主机全名 比方说 www.mglz.net

// 主机对应的IP

Public Function ModifyARecord(ByVal sOwnerName As Variant, ByVal sIPAddress As Variant, ByRef errMsg As Variant) As Variant

 

Dim oParams As New Dictionary

 

oParams.Add "IPAddress", sIPAddress

 

ModifyARecord = Modify("MicrosoftDNS_AType", "OwnerName", sOwnerName, "Modify", oParams, errMsg)

 

Set oParams = Nothing

 

End Function

 

 

 

//

// 删除A记录记录

//

// 主机全名 比方说 www.mglz.net

Public Function DeleteARecord(ByVal sOwnerName As Variant, ByRef errMsg As Variant) As Variant

DeleteARecord = Delete("MicrosoftDNS_AType", "OwnerName", sOwnerName, errMsg)

End Function

 

 

 

//

// 添加MX记录

//

// 主机名称

// 所在区域的域名

// 要转向到的邮件服务器

// 优先级

Public Function CreateMXRecord(ByVal sHostName As Variant, ByVal sContainerName As Variant, ByVal sMailServer As Variant, ByVal sPreference As Variant, ByRef errMsg As Variant) As Variant

 

If sHostName = "" Then

sOwnerName = sContainerName

Else

sOwnerName = sHostName & "." & sContainerName

End If

 

Set objInst = SelectRR("MicrosoftDNS_MXType", " ownerName=" & Chr(34) & sOwnerName & Chr(34), errMsg)

 

If errMsg <> "" Then

CreateMXRecord = False

Exit Function

End If

 

If objInst.Count > 0 Then

errMsg = "该记录已存在"

CreateMXRecord = False

End If

 

Set objInst = Nothing

 

Dim oParams As New Dictionary

oParams.Add "ContainerName", sContainerName

 

If sHostName = "" Then

oParams.Add "OwnerName", sContainerName

Else

oParams.Add "OwnerName", sHostName & "." & sContainerName

End If

 

oParams.Add "Preference", sPreference

oParams.Add "MailExchange", sMailServer

 

CreateMXRecord = Create("MicrosoftDNS_MXType", "CreateInstanceFromPropertyData", oParams, errMsg)

 

Set oParams = Nothing

 

End Function

 

 

//

// 修改MX记录

//

// 主机全名 比方说 www.mglz.net

// 要转向到的邮件服务器

// 优先级

Public Function ModifyMXRecord(ByVal sOwnerName As Variant, ByVal sMailServer As Variant, ByVal sPreference As Variant, ByRef errMsg As Variant) As Variant

 

Dim oParams As New Dictionary

 

oParams.Add "MailExchange", sMailServer

oParams.Add "Preference", sPreference

 

ModifyMXRecord = Modify("MicrosoftDNS_MXType", "OwnerName", sOwnerName, "Modify", oParams, errMsg)

 

Set oParams = Nothing

 

End Function

 

//

// 删除MX记录

//

// 主机全名 比方说 www.mglz.net

Public Function DeleteMXRecord(ByVal sOwnerName As Variant, ByRef errMsg As Variant) As Variant

DeleteMXRecord = Delete("MicrosoftDNS_MXType", "OwnerName", sOwnerName, errMsg)

End Function

 

 

//

// 添加别名

//

// 别名

// 所在区域的域名

// 目标主机名称

Public Function CreateCName(ByVal sHostName As Variant, ByVal sContainerName As Variant, ByVal sPrimaryName As Variant, ByRef errMsg As Variant) As Variant

If sHostName = "" Then

sOwnerName = sContainerName

Else

sOwnerName = sHostName & "." & sContainerName

End If

 

Set objInst = SelectRR("MicrosoftDNS_CNAMEType", " ownerName=" & Chr(34) & sOwnerName & Chr(34), errMsg)

 

If errMsg <> "" Then

CreateCName = False

Exit Function

End If

 

If objInst.Count > 0 Then

errMsg = "该记录已存在"

CreateCName = False

End If

 

Set objInst = Nothing

 

Dim oParams As New Dictionary

oParams.Add "ContainerName", sContainerName

 

If sHostName = "" Then

oParams.Add "OwnerName", sContainerName

Else

oParams.Add "OwnerName", sHostName & "." & sContainerName

End If

 

oParams.Add "PrimaryName", sPrimaryName

 

CreateCName = Create("MicrosoftDNS_CNAMEType", "CreateInstanceFromPropertyData", oParams, errMsg)

 

Set oParams = Nothing

 

End Function

 

 

 

//

// 修改别名

//

// 别名全称 比方说 www.mglz.net

// 目标主机名称

Public Function ModifyCName(ByVal sOwnerName As Variant, ByVal sPrimaryName As Variant, ByRef errMsg As Variant) As Variant

 

Dim oParams As New Dictionary

 

oParams.Add "PrimaryName", sPrimaryName

 

ModifyCName = Modify("MicrosoftDNS_CNAMEType", "OwnerName", sOwnerName, "Modify", oParams, errMsg)

 

Set oParams = Nothing

 

End Function

 

 

 

//

// 删除别名

//

// 别名全称 比方说 www.mglz.net

Public Function DeleteCName(ByVal sOwnerName As Variant, ByRef errMsg As Variant) As Variant

DeleteCName = Delete("MicrosoftDNS_CNAMEType", "OwnerName", sOwnerName, errMsg)

End Function

 

 

 

Private Function Create(ByVal sTableName As String, ByVal MethodName As String, ByRef oParms As Dictionary, ByRef errMsg As Variant) As Boolean

 

On Error GoTo ll

 

Set oProcess = objService.Get(sTableName)

 

Set oInParams = oProcess.Methods_(MethodName).InParameters.SpawnInstance_()

 

 

For Each Key In oParms.Keys

oInParams.Properties_.Item(Key).Value = CStr(oParms.Item(Key))

Next

 

 

objService.ExecMethod sTableName, MethodName, oInParams

 

errMsg = ""

Create = True

Exit Function

 

ll:

Create = False

errMsg = Err.Description

 

End Function

 

 

Private Function Modify(ByVal sTableName As String, ByVal sFieldName As String, ByVal sFieldValue As String, ByVal MethodName As String, ByRef oParams As Dictionary, ByRef errMsg As Variant) As Boolean

 

Dim sQuery As String

sQuery = "SELECT * FROM " & sTableName & " WHERE " & sFieldName & " = " & sFieldValue & ""

 

On Error GoTo ll

 

Set objInst = objService.ExecQuery(sQuery)

 

For Each o In objInst

Set oInParams = o.Methods_(MethodName).InParameters.SpawnInstance_()

For Each Key In oParams.Keys

oInParams.Properties_.Item(Key).Value = CStr(oParams.Item(Key))

Next

o.ExecMethod_ MethodName, oInParams

Next

 

errMsg = ""

Modify = True

Exit Function

 

ll:

Modify = False

errMsg = Err.Description

 

End Function

 

 

Private Function Delete(ByVal sTableName As String, ByVal sFieldName As String, ByVal sFieldValue As String, ByRef errMsg As Variant) As Boolean

 

Dim sQuery As String

sQuery = "SELECT * FROM " & sTableName & " WHERE " & sFieldName & " = " & sFieldValue & ""

 

On Error GoTo ll

 

Set objInst = objService.ExecQuery(sQuery)

 

For Each o In objInst

o.Delete_

Next

 

errMsg = ""

Delete = True

Exit Function

 

ll:

Delete = False

errMsg = Err.Description

 

End Function

 

 

 

Private Function SelectRR(ByVal recordType As String, ByVal sFilterExpression As String, ByRef errMsg As Variant) As Object

 

 

On Error GoTo ll

 

errMsg = ""

 

sql = "Select * from " & recordType

If sFilterExpression <> "" Then

sql = sql & " where " & sFilterExpression

End If

 

Set SelectRR = objService.ExecQuery(sql)

 

errMsg = ""

Exit Function

 

 

ll: errMsg = Err.Description

Set SelectRR = Nothing

Err.Clear

 

 

End Function

 

end Class