websitepanel/WebsitePanel/Sources/WebsitePanel.Server.Utils/WmiHelper.cs

120 lines
4.7 KiB
C#

// Copyright (c) 2012, Outercurve Foundation.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// - Neither the name of the Outercurve Foundation nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
using System;
using System.Management;
namespace WebsitePanel.Providers.Utils
{
/// <summary>
/// Summary description for WmiHelper.
/// </summary>
public class WmiHelper
{
// namespace
string ns = null;
ManagementScope scope = null;
public WmiHelper(string ns)
{
this.ns = ns;
}
public ManagementObjectCollection ExecuteQuery(string query)
{
ObjectQuery objectQuery = new ObjectQuery(query);
ManagementObjectSearcher searcher =
new ManagementObjectSearcher(WmiScope, objectQuery);
return searcher.Get();
}
// execute wmi query with parameters (taken from internal class Wmi used in Hyper-V provider)
public ManagementObjectCollection ExecuteWmiQuery(string query, params object[] args)
{
if (args != null && args.Length > 0)
query = String.Format(query, args);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(WmiScope, new ObjectQuery(query));
return searcher.Get();
}
//(taken from internal class Wmi used in Hyper-V provider)
public ManagementObject GetWmiObject(string className)
{
return GetWmiObject(className, null);
}
//(taken from internal class Wmi used in Hyper-V provider)
public ManagementObjectCollection GetWmiObjects(string className, string filter, params object[] args)
{
string query = "select * from " + className;
if (!String.IsNullOrEmpty(filter))
query += " where " + filter;
return ExecuteWmiQuery(query, args);
}
//(taken from internal class Wmi used in Hyper-V provider)
public ManagementObject GetWmiObject(string className, string filter, params object[] args)
{
ManagementObjectCollection col = GetWmiObjects(className, filter, args);
ManagementObjectCollection.ManagementObjectEnumerator enumerator = col.GetEnumerator();
return enumerator.MoveNext() ? (ManagementObject)enumerator.Current : null;
}
public ManagementClass GetClass(string path)
{
return new ManagementClass(WmiScope, new ManagementPath(path), null);
}
public ManagementObject GetObject(string path)
{
return new ManagementObject(WmiScope, new ManagementPath(path), null);
}
private ManagementScope WmiScope
{
get
{
if (scope == null)
{
ManagementPath path = new ManagementPath(ns);
scope = new ManagementScope(path, new ConnectionOptions());
scope.Connect();
}
return scope;
}
}
public ManagementObject CreateInstance(string path)
{
ManagementClass objClass = GetClass(path);
return objClass.CreateInstance();
}
}
}