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using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Net;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
namespace MediaBrowser.ServerApplication.Networking
{
/// <summary>
/// Class NetUtils
/// </summary>
public class NetworkManager : Emby.Server.Implementations.Networking.NetworkManager
{
public NetworkManager(ILogger logger)
: base(logger)
{
}
/// <summary>
/// Gets the network shares.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>IEnumerable{NetworkShare}.</returns>
public override IEnumerable<NetworkShare> GetNetworkShares(string path)
{
Logger.Info("Getting network shares from {0}", path);
return new ShareCollection(path).OfType<Share>().Select(ToNetworkShare);
}
/// <summary>
/// To the network share.
/// </summary>
/// <param name="share">The share.</param>
/// <returns>NetworkShare.</returns>
private NetworkShare ToNetworkShare(Share share)
{
return new NetworkShare
{
Name = share.NetName,
Path = share.Path,
Remark = share.Remark,
Server = share.Server,
ShareType = ToNetworkShareType(share.ShareType)
};
}
/// <summary>
/// To the type of the network share.
/// </summary>
/// <param name="shareType">Type of the share.</param>
/// <returns>NetworkShareType.</returns>
/// <exception cref="System.ArgumentException">Unknown share type</exception>
private NetworkShareType ToNetworkShareType(ShareType shareType)
{
if (shareType.HasFlag(ShareType.Special))
{
return NetworkShareType.Special;
}
if (shareType.HasFlag(ShareType.Device))
{
return NetworkShareType.Device;
}
if (shareType.HasFlag(ShareType.Disk))
{
return NetworkShareType.Disk;
}
if (shareType.HasFlag(ShareType.IPC))
{
return NetworkShareType.Ipc;
}
if (shareType.HasFlag(ShareType.Printer))
{
return NetworkShareType.Printer;
}
throw new ArgumentException("Unknown share type");
}
/// <summary>
/// Uses the DllImport : NetServerEnum with all its required parameters
/// (see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/netmgmt/netmgmt/netserverenum.asp
/// for full details or method signature) to retrieve a list of domain SV_TYPE_WORKSTATION
/// and SV_TYPE_SERVER PC's
/// </summary>
/// <returns>Arraylist that represents all the SV_TYPE_WORKSTATION and SV_TYPE_SERVER
/// PC's in the Domain</returns>
private List<string> GetNetworkDevicesInternal()
{
//local fields
const int MAX_PREFERRED_LENGTH = -1;
var SV_TYPE_WORKSTATION = 1;
var SV_TYPE_SERVER = 2;
IntPtr buffer = IntPtr.Zero;
IntPtr tmpBuffer = IntPtr.Zero;
var entriesRead = 0;
var totalEntries = 0;
var resHandle = 0;
var sizeofINFO = Marshal.SizeOf(typeof(_SERVER_INFO_100));
var returnList = new List<string>();
try
{
//call the DllImport : NetServerEnum with all its required parameters
//see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/netmgmt/netmgmt/netserverenum.asp
//for full details of method signature
var ret = NativeMethods.NetServerEnum(null, 100, ref buffer, MAX_PREFERRED_LENGTH, out entriesRead, out totalEntries, SV_TYPE_WORKSTATION | SV_TYPE_SERVER, null, out resHandle);
//if the returned with a NERR_Success (C++ term), =0 for C#
if (ret == 0)
{
//loop through all SV_TYPE_WORKSTATION and SV_TYPE_SERVER PC's
for (var i = 0; i < totalEntries; i++)
{
//get pointer to, Pointer to the buffer that received the data from
//the call to NetServerEnum. Must ensure to use correct size of
//STRUCTURE to ensure correct location in memory is pointed to
tmpBuffer = new IntPtr((Int64)buffer + (i * sizeofINFO));
//Have now got a pointer to the list of SV_TYPE_WORKSTATION and
//SV_TYPE_SERVER PC's, which is unmanaged memory
//Needs to Marshal data from an unmanaged block of memory to a
//managed object, again using STRUCTURE to ensure the correct data
//is marshalled
var svrInfo = (_SERVER_INFO_100)Marshal.PtrToStructure(tmpBuffer, typeof(_SERVER_INFO_100));
//add the PC names to the ArrayList
if (!string.IsNullOrEmpty(svrInfo.sv100_name))
{
returnList.Add(svrInfo.sv100_name);
}
}
}
}
finally
{
//The NetApiBufferFree function frees
//the memory that the NetApiBufferAllocate function allocates
NativeMethods.NetApiBufferFree(buffer);
}
return returnList;
}
/// <summary>
/// Gets available devices within the domain
/// </summary>
/// <returns>PC's in the Domain</returns>
public override IEnumerable<FileSystemEntryInfo> GetNetworkDevices()
{
return GetNetworkDevicesInternal().Select(c => new FileSystemEntryInfo
{
Name = c,
Path = NetworkPrefix + c,
Type = FileSystemEntryType.NetworkComputer
});
}
/// <summary>
/// Gets the network prefix.
/// </summary>
/// <value>The network prefix.</value>
private string NetworkPrefix
{
get
{
var separator = Path.DirectorySeparatorChar.ToString(CultureInfo.InvariantCulture);
return separator + separator;
}
}
}
}
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