I have a requirement to generate UNC path from a normal mapped drive path in windows service.
If I passed the path as k:\Detail it should convert like \\ln01pc23\freenin.sec1.local\in01-dep\Details ..etc. I integrated this code into my service but its not working and return the same mapped path. I passed mapped path from app.confi file.Where is the wrong in my code?..
These are my codes
using System;
using System.IO;
using System.Collections;
using System.Runtime.InteropServices;
namespace Trinet.Networking
{
#region Share Type
/// <summary>
/// Type of share
/// </summary>
[Flags]
public enum ShareType
{
/// <summary>Disk share</summary>
Disk = 0,
/// <summary>Printer share</summary>
Printer = 1,
/// <summary>Device share</summary>
Device = 2,
/// <summary>IPC share</summary>
IPC = 3,
/// <summary>Special share</summary>
Special = -2147483648, // 0x80000000,
}
#endregion
#region Share
/// <summary>
/// Information about a local share
/// </summary>
public class Share
{
#region Private data
private string _server;
private string _netName;
private string _path;
private ShareType _shareType;
private string _remark;
#endregion
#region Constructor
/// <summary>
/// Constructor
/// </summary>
/// <param name="Server"></param>
/// <param name="shi"></param>
public Share(string server, string netName, string path, ShareType shareType, string remark)
{
if (ShareType.Special == shareType && "IPC$" == netName)
{
shareType |= ShareType.IPC;
}
_server = server;
_netName = netName;
_path = path;
_shareType = shareType;
_remark = remark;
}
#endregion
#region Properties
/// <summary>
/// The name of the computer that this share belongs to
/// </summary>
public string Server
{
get { return _server; }
}
/// <summary>
/// Share name
/// </summary>
public string NetName
{
get { return _netName; }
}
/// <summary>
/// Local path
/// </summary>
public string Path
{
get { return _path; }
}
/// <summary>
/// Share type
/// </summary>
public ShareType ShareType
{
get { return _shareType; }
}
/// <summary>
/// Comment
/// </summary>
public string Remark
{
get { return _remark; }
}
/// <summary>
/// Returns true if this is a file system share
/// </summary>
public bool IsFileSystem
{
get
{
// Shared device
if (0 != (_shareType & ShareType.Device)) return false;
// IPC share
if (0 != (_shareType & ShareType.IPC)) return false;
// Shared printer
if (0 != (_shareType & ShareType.Printer)) return false;
// Standard disk share
if (0 == (_shareType & ShareType.Special)) return true;
// Special disk share (e.g. C$)
if (ShareType.Special == _shareType && null != _netName && 0 != _netName.Length)
return true;
else
return false;
}
}
/// <summary>
/// Get the root of a disk-based share
/// </summary>
public DirectoryInfo Root
{
get
{
if (IsFileSystem)
{
if (null == _server || 0 == _server.Length)
if (null == _path || 0 == _path.Length)
return new DirectoryInfo(ToString());
else
return new DirectoryInfo(_path);
else
return new DirectoryInfo(ToString());
}
else
return null;
}
}
#endregion
/// <summary>
/// Returns the path to this share
/// </summary>
/// <returns></returns>
public override string ToString()
{
if (null == _server || 0 == _server.Length)
{
return string.Format(@"\\{0}\{1}", Environment.MachineName, _netName);
}
else
return string.Format(@"\\{0}\{1}", _server, _netName);
}
/// <summary>
/// Returns true if this share matches the local path
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public bool MatchesPath(string path)
{
if (!IsFileSystem) return false;
if (null == path || 0 == path.Length) return true;
return path.ToLower().StartsWith(_path.ToLower());
}
}
#endregion
#region Share Collection
/// <summary>
/// A collection of shares
/// </summary>
public class ShareCollection : ReadOnlyCollectionBase
{
#region Platform
/// <summary>
/// Is this an NT platform?
/// </summary>
protected static bool IsNT
{
get { return (PlatformID.Win32NT == Environment.OSVersion.Platform); }
}
/// <summary>
/// Returns true if this is Windows 2000 or higher
/// </summary>
protected static bool IsW2KUp
{
get
{
OperatingSystem os = Environment.OSVersion;
if (PlatformID.Win32NT == os.Platform && os.Version.Major >= 5)
return true;
else
return false;
}
}
#endregion
#region Interop
#region Constants
/// <summary>Maximum path length</summary>
protected const int MAX_PATH = 260;
/// <summary>No error</summary>
protected const int NO_ERROR = 0;
/// <summary>Access denied</summary>
protected const int ERROR_ACCESS_DENIED = 5;
/// <summary>Access denied</summary>
protected const int ERROR_WRONG_LEVEL = 124;
/// <summary>More data available</summary>
protected const int ERROR_MORE_DATA = 234;
/// <summary>Not connected</summary>
protected const int ERROR_NOT_CONNECTED = 2250;
/// <summary>Level 1</summary>
protected const int UNIVERSAL_NAME_INFO_LEVEL = 1;
/// <summary>Max extries (9x)</summary>
protected const int MAX_SI50_ENTRIES = 20;
#endregion
#region Structures
/// <summary>Unc name</summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
protected struct UNIVERSAL_NAME_INFO
{
[MarshalAs(UnmanagedType.LPTStr)]
public string lpUniversalName;
}
/// <summary>Share information, NT, level 2</summary>
/// <remarks>
/// Requires admin rights to work.
/// </remarks>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
protected struct SHARE_INFO_2
{
[MarshalAs(UnmanagedType.LPWStr)]
public string NetName;
public ShareType ShareType;
[MarshalAs(UnmanagedType.LPWStr)]
public string Remark;
public int Permissions;
public int MaxUsers;
public int CurrentUsers;
[MarshalAs(UnmanagedType.LPWStr)]
public string Path;
[MarshalAs(UnmanagedType.LPWStr)]
public string Password;
}
/// <summary>Share information, NT, level 1</summary>
/// <remarks>
/// Fallback when no admin rights.
/// </remarks>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
protected struct SHARE_INFO_1
{
[MarshalAs(UnmanagedType.LPWStr)]
public string NetName;
public ShareType ShareType;
[MarshalAs(UnmanagedType.LPWStr)]
public string Remark;
}
/// <summary>Share information, Win9x</summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
protected struct SHARE_INFO_50
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 13)]
public string NetName;
public byte bShareType;
public ushort Flags;
[MarshalAs(UnmanagedType.LPTStr)]
public string Remark;
[MarshalAs(UnmanagedType.LPTStr)]
public string Path;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 9)]
public string PasswordRW;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 9)]
public string PasswordRO;
public ShareType ShareType
{
get { return (ShareType)((int)bShareType & 0x7F); }
}
}
/// <summary>Share information level 1, Win9x</summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
protected struct SHARE_INFO_1_9x
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 13)]
public string NetName;
public byte Padding;
public ushort bShareType;
[MarshalAs(UnmanagedType.LPTStr)]
public string Remark;
public ShareType ShareType
{
get { return (ShareType)((int)bShareType & 0x7FFF); }
}
}
#endregion
#region Functions
/// <summary>Get a UNC name</summary>
[DllImport("mpr", CharSet = CharSet.Auto)]
protected static extern int WNetGetUniversalName(string lpLocalPath,
int dwInfoLevel, ref UNIVERSAL_NAME_INFO lpBuffer, ref int lpBufferSize);
/// <summary>Get a UNC name</summary>
[DllImport("mpr", CharSet = CharSet.Auto)]
protected static extern int WNetGetUniversalName(string lpLocalPath,
int dwInfoLevel, IntPtr lpBuffer, ref int lpBufferSize);
/// <summary>Enumerate shares (NT)</summary>
[DllImport("netapi32", CharSet = CharSet.Unicode)]
protected static extern int NetShareEnum(string lpServerName, int dwLevel,
out IntPtr lpBuffer, int dwPrefMaxLen, out int entriesRead,
out int totalEntries, ref int hResume);
/// <summary>Enumerate shares (9x)</summary>
[DllImport("svrapi", CharSet = CharSet.Ansi)]
protected static extern int NetShareEnum(
[MarshalAs(UnmanagedType.LPTStr)] string lpServerName, int dwLevel,
IntPtr lpBuffer, ushort cbBuffer, out ushort entriesRead,
out ushort totalEntries);
/// <summary>Free the buffer (NT)</summary>
[DllImport("netapi32")]
protected static extern int NetApiBufferFree(IntPtr lpBuffer);
#endregion
#region Enumerate shares
/// <summary>
/// Enumerates the shares on Windows NT
/// </summary>
/// <param name="server">The server name</param>
/// <param name="shares">The ShareCollection</param>
protected static void EnumerateSharesNT(string server, ShareCollection shares)
{
int level = 2;
int entriesRead, totalEntries, nRet, hResume = 0;
IntPtr pBuffer = IntPtr.Zero;
try
{
nRet = NetShareEnum(server, level, out pBuffer, -1,
out entriesRead, out totalEntries, ref hResume);
if (ERROR_ACCESS_DENIED == nRet)
{
//Need admin for level 2, drop to level 1
level = 1;
nRet = NetShareEnum(server, level, out pBuffer, -1,
out entriesRead, out totalEntries, ref hResume);
}
if (NO_ERROR == nRet && entriesRead > 0)
{
Type t = (2 == level) ? typeof(SHARE_INFO_2) : typeof(SHARE_INFO_1);
int offset = Marshal.SizeOf(t);
for (int i = 0, lpItem = pBuffer.ToInt32(); i < entriesRead; i++, lpItem += offset)
{
IntPtr pItem = new IntPtr(lpItem);
if (1 == level)
{
SHARE_INFO_1 si = (SHARE_INFO_1)Marshal.PtrToStructure(pItem, t);
shares.Add(si.NetName, string.Empty, si.ShareType, si.Remark);
}
else
{
SHARE_INFO_2 si = (SHARE_INFO_2)Marshal.PtrToStructure(pItem, t);
shares.Add(si.NetName, si.Path, si.ShareType, si.Remark);
}
}
}
}
finally
{
// Clean up buffer allocated by system
if (IntPtr.Zero != pBuffer)
NetApiBufferFree(pBuffer);
}
}
/// <summary>
/// Enumerates the shares on Windows 9x
/// </summary>
/// <param name="server">The server name</param>
/// <param name="shares">The ShareCollection</param>
protected static void EnumerateShares9x(string server, ShareCollection shares)
{
int level = 50;
int nRet = 0;
ushort entriesRead, totalEntries;
Type t = typeof(SHARE_INFO_50);
int size = Marshal.SizeOf(t);
ushort cbBuffer = (ushort)(MAX_SI50_ENTRIES * size);
//On Win9x, must allocate buffer before calling API
IntPtr pBuffer = Marshal.AllocHGlobal(cbBuffer);
try
{
nRet = NetShareEnum(server, level, pBuffer, cbBuffer,
out entriesRead, out totalEntries);
if (ERROR_WRONG_LEVEL == nRet)
{
level = 1;
t = typeof(SHARE_INFO_1_9x);
size = Marshal.SizeOf(t);
nRet = NetShareEnum(server, level, pBuffer, cbBuffer,
out entriesRead, out totalEntries);
}
if (NO_ERROR == nRet || ERROR_MORE_DATA == nRet)
{
for (int i = 0, lpItem = pBuffer.ToInt32(); i < entriesRead; i++, lpItem += size)
{
IntPtr pItem = new IntPtr(lpItem);
if (1 == level)
{
SHARE_INFO_1_9x si = (SHARE_INFO_1_9x)Marshal.PtrToStructure(pItem, t);
shares.Add(si.NetName, string.Empty, si.ShareType, si.Remark);
}
else
{
SHARE_INFO_50 si = (SHARE_INFO_50)Marshal.PtrToStructure(pItem, t);
shares.Add(si.NetName, si.Path, si.ShareType, si.Remark);
}
}
}
else
Console.WriteLine(nRet);
}
finally
{
//Clean up buffer
Marshal.FreeHGlobal(pBuffer);
}
}
/// <summary>
/// Enumerates the shares
/// </summary>
/// <param name="server">The server name</param>
/// <param name="shares">The ShareCollection</param>
protected static void EnumerateShares(string server, ShareCollection shares)
{
if (null != server && 0 != server.Length && !IsW2KUp)
{
server = server.ToUpper();
// On NT4, 9x and Me, server has to start with "\\"
if (!('\\' == server[0] && '\\' == server[1]))
server = @"\\" + server;
}
if (IsNT)
EnumerateSharesNT(server, shares);
else
EnumerateShares9x(server, shares);
}
#endregion
#endregion
#region Static methods
/// <summary>
/// Returns true if fileName is a valid local file-name of the form:
/// X:\, where X is a drive letter from A-Z
/// </summary>
/// <param name="fileName">The filename to check</param>
/// <returns></returns>
public static bool IsValidFilePath(string fileName)
{
if (null == fileName || 0 == fileName.Length) return false;
char drive = char.ToUpper(fileName[0]);
if ('A' > drive || drive > 'Z')
return false;
else if (Path.VolumeSeparatorChar != fileName[1])
return false;
else if (Path.DirectorySeparatorChar != fileName[2])
return false;
else
return true;
}
/// <summary>
/// Returns the UNC path for a mapped drive or local share.
/// </summary>
/// <param name="fileName">The path to map</param>
/// <returns>The UNC path (if available)</returns>
public static string PathToUnc(string fileName)
{
if (null == fileName || 0 == fileName.Length) return string.Empty;
fileName = Path.GetFullPath(fileName);
if (!IsValidFilePath(fileName)) return fileName;
int nRet = 0;
UNIVERSAL_NAME_INFO rni = new UNIVERSAL_NAME_INFO();
int bufferSize = Marshal.SizeOf(rni);
nRet = WNetGetUniversalName(
fileName, UNIVERSAL_NAME_INFO_LEVEL,
ref rni, ref bufferSize);
if (ERROR_MORE_DATA == nRet)
{
IntPtr pBuffer = Marshal.AllocHGlobal(bufferSize); ;
try
{
nRet = WNetGetUniversalName(
fileName, UNIVERSAL_NAME_INFO_LEVEL,
pBuffer, ref bufferSize);
if (NO_ERROR == nRet)
{
rni = (UNIVERSAL_NAME_INFO)Marshal.PtrToStructure(pBuffer,
typeof(UNIVERSAL_NAME_INFO));
}
}
finally
{
Marshal.FreeHGlobal(pBuffer);
}
}
switch (nRet)
{
case NO_ERROR:
return rni.lpUniversalName;
case ERROR_NOT_CONNECTED:
//Local file-name
ShareCollection shi = LocalShares;
if (null != shi)
{
Share share = shi[fileName];
if (null != share)
{
string path = share.Path;
if (null != path && 0 != path.Length)
{
int index = path.Length;
if (Path.DirectorySeparatorChar != path[path.Length - 1])
index++;
if (index < fileName.Length)
fileName = fileName.Substring(index);
else
fileName = string.Empty;
fileName = Path.Combine(share.ToString(), fileName);
}
}
}
return fileName;
default:
Console.WriteLine("Unknown return value: {0}", nRet);
return string.Empty;
}
}
/// <summary>
/// Returns the local <see cref="Share"/> object with the best match
/// to the specified path.
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public static Share PathToShare(string fileName)
{
if (null == fileName || 0 == fileName.Length) return null;
fileName = Path.GetFullPath(fileName);
if (!IsValidFilePath(fileName)) return null;
ShareCollection shi = LocalShares;
if (null == shi)
return null;
else
return shi[fileName];
}
#endregion
#region Local shares
/// <summary>The local shares</summary>
private static ShareCollection _local = null;
/// <summary>
/// Return the local shares
/// </summary>
public static ShareCollection LocalShares
{
get
{
if (null == _local)
_local = new ShareCollection();
return _local;
}
}
/// <summary>
/// Return the shares for a specified machine
/// </summary>
/// <param name="server"></param>
/// <returns></returns>
public static ShareCollection GetShares(string server)
{
return new ShareCollection(server);
}
#endregion
#region Private Data
/// <summary>The name of the server this collection represents</summary>
private string _server;
#endregion
#region Constructor
/// <summary>
/// Default constructor - local machine
/// </summary>
public ShareCollection()
{
_server = string.Empty;
EnumerateShares(_server, this);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="Server"></param>
public ShareCollection(string server)
{
_server = server;
EnumerateShares(_server, this);
}
#endregion
#region Add
protected void Add(Share share)
{
InnerList.Add(share);
}
protected void Add(string netName, string path, ShareType shareType, string remark)
{
InnerList.Add(new Share(_server, netName, path, shareType, remark));
}
#endregion
#region Properties
/// <summary>
/// Returns the name of the server this collection represents
/// </summary>
public string Server
{
get { return _server; }
}
/// <summary>
/// Returns the <see cref="Share"/> at the specified index.
/// </summary>
public Share this[int index]
{
get { return (Share)InnerList[index]; }
}
/// <summary>
/// Returns the <see cref="Share"/> which matches a given local path
/// </summary>
/// <param name="path">The path to match</param>
public Share this[string path]
{
get
{
if (null == path || 0 == path.Length) return null;
path = Path.GetFullPath(path);
if (!IsValidFilePath(path)) return null;
Share match = null;
for (int i = 0; i < InnerList.Count; i++)
{
Share s = (Share)InnerList[i];
if (s.IsFileSystem && s.MatchesPath(path))
{
//Store first match
if (null == match)
match = s;
// If this has a longer path,
// and this is a disk share or match is a special share,
// then this is a better match
else if (match.Path.Length < s.Path.Length)
{
if (ShareType.Disk == s.ShareType || ShareType.Disk != match.ShareType)
match = s;
}
}
}
return match;
}
}
#endregion
#region Implementation of ICollection
/// <summary>
/// Copy this collection to an array
/// </summary>
/// <param name="array"></param>
/// <param name="index"></param>
public void CopyTo(Share[] array, int index)
{
InnerList.CopyTo(array, index);
}
#endregion
}
#endregion
}
-----
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Configuration;
using System.IO;
using Trinet.Networking;
namespace mytestservice
{
public partial class Testservice : ServiceBase
{
public Testservice()
{
InitializeComponent();
}
static string getUncpath(string fname)
{
string fpath = ShareCollection.PathToUnc(fname);
return fpath;
}
protected override void OnStart(string[] args)
{
// EventLog.WriteEntry("my service started");
try
{
if (ConfigurationManager.AppSettings["fpath"] == null || string.IsNullOrWhiteSpace(ConfigurationManager.AppSettings["fpath"]))
{
//Console.WriteLine("key value is null");
EventLog.WriteEntry("key value is null in app.config");
}
else
{
string fpath1 = ConfigurationManager.AppSettings["fpath"];
// string uncpath = ShareCollection.PathToUnc(fpath1);
string uncpath = getUncpath(fpath1);
//StreamWriter sw = new StreamWriter(fpath1, FileMode.OpenOrCreate, FileAccess.Write);
//sw.WriteLine("aurovinda:" + DateTime.Now.ToString());
FileStream fs = new FileStream(uncpath, FileMode.OpenOrCreate, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine("aurovinda");
}
}
catch (Exception ex)
{
// Console.WriteLine(ex.Message.ToString());
EventLog.WriteEntry(ex.Message);
}
}
protected override void OnStop()
{
}
}
}
-------------------------------
config file
<configuration>
<appsettings>
<add key="fpath" value="K:\IT">
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