/// <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)
{
var level = 50;
var t = typeof(ShareInfo50);
var size = Marshal.SizeOf(t);
var cbBuffer = (ushort)(MaxSi50Entries * size);
//On Win9x, must allocate buffer before calling API
var pBuffer = Marshal.AllocHGlobal(cbBuffer);
try
{
ushort entriesRead;
ushort totalEntries;
var nRet = NetShareEnum(server, level, pBuffer, cbBuffer,
out entriesRead, out totalEntries);
if (ErrorWrongLevel == nRet)
{
level = 1;
t = typeof(ShareInfo1_9X);
size = Marshal.SizeOf(t);
nRet = NetShareEnum(server, level, pBuffer, cbBuffer,
out entriesRead, out totalEntries);
}
if (NoError == nRet || ErrorMoreData == nRet)
{
for (int i = 0, lpItem = pBuffer.ToInt32(); i < entriesRead; i++, lpItem += size)
{
var pItem = new IntPtr(lpItem);
if (1 == level)
{
var si = (ShareInfo1_9X)Marshal.PtrToStructure(pItem, t);
shares.Add(si.NetName, string.Empty, si.ShareType, si.Remark);
}
else
{
var si = (ShareInfo50)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 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)
{
var level = 2;
var hResume = 0;
var pBuffer = IntPtr.Zero;
try
{
int entriesRead;
int totalEntries;
var nRet = NetShareEnum(server, level, out pBuffer, -1,
out entriesRead, out totalEntries, ref hResume);
if (ErrorAccessDenied == 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 (NoError == nRet && entriesRead > 0)
{
var t = 2 == level ? typeof(ShareInfo2) : typeof(ShareInfo1);
var offset = Marshal.SizeOf(t);
for (int i = 0, lpItem = pBuffer.ToInt32(); i < entriesRead; i++, lpItem += offset)
{
var pItem = new IntPtr(lpItem);
if (1 == level)
{
var si = (ShareInfo1)Marshal.PtrToStructure(pItem, t);
shares.Add(si.NetName, string.Empty, si.ShareType, si.Remark);
}
else
{
var si = (ShareInfo2)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
/// </summary>
/// <param name="server">The server name</param>
/// <param name="shares">The ShareCollection</param>
protected static void EnumerateShares(string server, ShareCollection shares)
{
if (!string.IsNullOrEmpty(server) && !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);
}
}
/// <summary>
/// The main entry point for the application.
/// </summary>
internal static void TestShares()
{
// Enumerate shares on local computer
Console.WriteLine("\nShares on local computer:");
var shi = ShareCollection.LocalShares;
if (shi != null)
{
foreach (Share si in shi)
{
Console.WriteLine("{0}: {1} [{2}]",
si.ShareType, si, si.Path);
// If this is a file-system share, try to
// list the first five subfolders.
// NB: If the share is on a removable device,
// you could get "Not ready" or "Access denied"
// exceptions.
if (si.IsFileSystem)
{
try
{
var d = si.Root;
var flds = d.GetDirectories();
for (var i = 0; i < flds.Length && i < 5; i++)
{
Console.WriteLine("\t{0} - {1}", i, flds[i].FullName);
}
Console.WriteLine();
}
catch (Exception ex)
{
Console.WriteLine("\tError listing {0}:\n\t{1}\n",
si, ex.Message);
}
}
}
}
else
{
Console.WriteLine("Unable to enumerate the local shares.");
}
Console.WriteLine();
// Enumerate shares on a remote computer
Console.Write("Enter the NetBios name of a server on your network: ");
var server = Console.ReadLine();
if (server != null && server.Trim().Length > 0)
{
Console.WriteLine("\nShares on {0}:", server);
shi = ShareCollection.GetShares(server);
if (shi != null)
{
foreach (Share si in shi)
{
Console.WriteLine("{0}: {1} [{2}]",
si.ShareType, si, si.Path);
// If this is a file-system share, try to
// list the first five subfolders.
// NB: If the share is on a removable device,
// you could get "Not ready" or "Access denied"
// exceptions.
// If you don't have permissions to the share,
// you will get security exceptions.
if (si.IsFileSystem)
{
try
{
var d = si.Root;
var flds = d.GetDirectories();
for (var i = 0; i < flds.Length && i < 5; i++)
{
Console.WriteLine("\t{0} - {1}", i, flds[i].FullName);
}
Console.WriteLine();
}
catch (Exception ex)
{
Console.WriteLine("\tError listing {0}:\n\t{1}\n",
si, ex.Message);
}
}
}
}
else
{
Console.WriteLine("Unable to enumerate the shares on {0}.\n"
+ "Make sure the machine exists, and that you have permission to access it.",
server);
}
Console.WriteLine();
}
// Resolve local paths to UNC paths.
string fileName;
do
{
Console.Write("Enter the path to a file, or \"Q\" to exit: ");
fileName = Console.ReadLine();
if (string.IsNullOrEmpty(fileName))
{
continue;
}
if (fileName.ToUpper() == "Q")
{
fileName = string.Empty;
}
else
{
Console.WriteLine("{0} = {1}", fileName, ShareCollection.PathToUnc(fileName));
}
} while (!string.IsNullOrEmpty(fileName));
}
