internal IntPtr ToUniStr(bool allocateFromHeap)
{
IntPtr ptr;
EnsureNotDisposed();
// Demand Permission
//new CryptographicPermission( CryptographicPermissionFlags.Decrypt ).Demand();
if (allocateFromHeap)
{
ptr = MarshalEx.AllocHGlobal((m_length + 1) * 2);
}
else
{
ptr = MarshalEx.AllocHLocal((m_length + 1) * 2);
//ptr = MarshalEx.AllocCoTaskMem( (m_length+1) * 2 );
}
try
{
this.UnProtectMemory();
Win32Native.memset(ptr, 0, (uint)((m_length + 1) * 2));
//Win32Native.ZeroMemory( ptr, (uint)((m_length+1) * 2) );
Marshal.Copy(m_buffer, 0, ptr, m_length * 2);
return(ptr);
}
finally
{
// Assert Permission
//new CryptographicPermission( CryptographicPermissionFlags.Encrypt ).Assert();
ProtectMemory();
}
}
/// <summary>
/// Returns a collection of destinations specified within the system.
/// </summary>
/// <returns>A DestinationInfo collection with details of all the destinations in the system.</returns>
public DestinationInfoCollection EnumDestinations()
{
DestinationInfo destInfo = new DestinationInfo();
IntPtr hDestInfo = IntPtr.Zero;
DestinationInfoCollection dests = new DestinationInfoCollection();
bool loop = true;
int i = 0;
int ret = 0;
lock (syncRoot)
{
do
{
hDestInfo = MarshalEx.AllocHLocal((uint)DestinationInfo.NativeSize);
ret = ConnMgrEnumDestinations(i++, hDestInfo);
if (ret == -2147467259)
{
loop = false;
break;
}
DestinationInfo cm = new DestinationInfo(hDestInfo);
dests.Add(cm);
MarshalEx.FreeHLocal(hDestInfo);
}while(loop);
}
return(dests);
}
/// <summary>
/// Enumerates and returns all connected network resources.
/// </summary>
/// <returns>Array of NetworkResource class</returns>
public static NetworkResource[] GetConnectedResources()
{
NETRESOURCE netRes = new NETRESOURCE();
IntPtr hEnum = IntPtr.Zero;
int ret = WNetOpenEnum(RESOURCE_CONNECTED, RESOURCETYPE_ANY, 0, IntPtr.Zero, ref hEnum);
if (ret != 0)
{
throw new System.ComponentModel.Win32Exception(ret, ((NetworkErrors)ret).ToString());
}
//Allocate memory for NETRESOURCE array
int bufferSize = 16384;
IntPtr buffer = MarshalEx.AllocHLocal(bufferSize);
if (buffer == IntPtr.Zero)
{
throw new OutOfMemoryException("There's not enough native memory.");
}
uint c = 0xFFFFFFFF;
int count = (int)c;
int size = Marshal.SizeOf(typeof(NETRESOURCE));
ArrayList arrList = new ArrayList();
ret = WNetEnumResource(hEnum, ref count, buffer, ref bufferSize);
if (ret == 0)
{
IntPtr currPtr = buffer;
for (int i = 0; i < count; i++)
{
netRes = (NETRESOURCE)Marshal.PtrToStructure(currPtr, typeof(NETRESOURCE));
NetworkResource res = new NetworkResource(Marshal.PtrToStringUni(netRes.lpLocalName), Marshal.PtrToStringUni(netRes.lpRemoteName));
//res.RemoteName = Marshal.PtrToStringUni(netRes.lpRemoteName);
//res.ShareName = Marshal.PtrToStringUni(netRes.lpLocalName);
arrList.Add(res);
currPtr = new IntPtr((int)currPtr + size);
}
}
else
{
//clean up
MarshalEx.FreeHLocal(buffer);
}
//clean up
MarshalEx.FreeHLocal(buffer);
return((NetworkResource[])arrList.ToArray(typeof(NetworkResource)));
}
/// <summary>
/// Writes the ConnectionInfo data to unmanaged memory.
/// </summary>
/// <returns>A pointer to the unmanaged memory block storing the ConnectionInfo data</returns>
public IntPtr ToPtr()
{
IntPtr p = MarshalEx.AllocHLocal((uint)Marshal.SizeOf(typeof(ConnectionInfo)));
MarshalEx.WriteInt32(p, 0, this.cbSize);
MarshalEx.WriteInt32(p, 4, this.dwParams);
MarshalEx.WriteInt32(p, 8, this.dwFlags);
MarshalEx.WriteInt32(p, 12, this.dwPriority);
MarshalEx.WriteBool(p, 16, this.bExclusive);
MarshalEx.WriteBool(p, 20, this.bDisabled);
MarshalEx.WriteByteArray(p, 24, this.guidDestNet.ToByteArray());
MarshalEx.WriteIntPtr(p, 40, this.hWnd);
MarshalEx.WriteInt32(p, 44, this.uMsg);
MarshalEx.WriteInt32(p, 48, this.lParam);
MarshalEx.WriteInt32(p, 52, this.ulMaxCost);
MarshalEx.WriteInt32(p, 56, this.ulMinRcvBw);
MarshalEx.WriteInt32(p, 60, this.ulMaxConnLatency);
handle = p;
return(p);
}
private PingReply InternalSend(IPAddress address, byte [] buffer, int timeout, PingOptions options)
{
if (_handlePingV4 == IntPtr.Zero)
{
_handlePingV4 = IcmpCreateFile();
}
if (_replyBuffer == IntPtr.Zero)
{
_replyBuffer = MarshalEx.AllocHLocal(0xffff);
}
IPOptions ipo = new IPOptions(options);
InitStructure(buffer);
IcmpSendEcho2(_handlePingV4, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, (uint)address.Address, _requestBuffer, (ushort)buffer.Length, ref ipo, _replyBuffer, 0xffff, (uint)timeout);
FreeStructure();
IcmpEchoReply reply = (IcmpEchoReply)Marshal.PtrToStructure(this._replyBuffer, typeof(IcmpEchoReply));
return(new PingReply(reply));
}
private void InitStructure(byte[] buffer)
{
_requestBuffer = MarshalEx.AllocHLocal(buffer.Length);
Marshal.Copy(buffer, 0, _requestBuffer, buffer.Length);
}
/// <summary>
/// Enumerates network resources.
/// </summary>
/// <param name="remoteName">The name of the server</param>
/// <returns>Array of NetworkResource class</returns>
public static NetworkResource[] GetNetworkResources(string remoteName)
{
NETRESOURCE netRes = new NETRESOURCE();
netRes.dwScope = RESOURCE_GLOBALNET;
netRes.dwType = RESOURCETYPE_DISK;
netRes.dwUsage = RESOURCEUSAGE_CONTAINER;
netRes.lpRemoteName = MarshalEx.StringToHGlobalUni(remoteName);
netRes.lpLocalName = MarshalEx.StringToHGlobalUni("");
netRes.lpComment = IntPtr.Zero;
netRes.lpProvider = IntPtr.Zero;
IntPtr hEnum = IntPtr.Zero;
int ret = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_ANY, 0, netRes, ref hEnum);
if (ret != 0)
{
throw new System.ComponentModel.Win32Exception(ret, ((NetworkErrors)ret).ToString());
}
//Allocate memory for NETRESOURCE array
int bufferSize = 16384;
IntPtr buffer = MarshalEx.AllocHLocal(bufferSize);
if (buffer == IntPtr.Zero)
{
throw new OutOfMemoryException("There's not enough native memory.");
}
uint c = 0xFFFFFFFF;
int count = (int)c;
int size = Marshal.SizeOf(typeof(NETRESOURCE));
ArrayList arrList = new ArrayList();
ret = WNetEnumResource(hEnum, ref count, buffer, ref bufferSize);
if (ret == 0)
{
IntPtr currPtr = buffer;
for (int i = 0; i < count; i++)
{
netRes = (NETRESOURCE)Marshal.PtrToStructure(currPtr, typeof(NETRESOURCE));
NetworkResource res = new NetworkResource("", Marshal.PtrToStringUni(netRes.lpRemoteName));
//res.RemoteName = Marshal.PtrToStringUni(netRes.lpRemoteName);
arrList.Add(res);
currPtr = new IntPtr((int)currPtr + size);
}
}
else
{
//clean up
MarshalEx.FreeHLocal(buffer);
throw new System.ComponentModel.Win32Exception(ret, ((NetworkErrors)ret).ToString());
}
//clean up
MarshalEx.FreeHLocal(buffer);
return((NetworkResource[])arrList.ToArray(typeof(NetworkResource)));
}
