/// <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 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
/// </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);
}
}
/// <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]);
}
}
/// <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);
}
}