/**
 * xrdp: A Remote Desktop Protocol server.
 *
 * Copyright (C) Thomas Goddard 2012
 * Copyright (C) Jay Sorg 2012
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * xrdpapi header, do not use os_calls.h, arch.h or any xrdp internal headers
 * this file is included in 3rd party apps
 */

#if !defined(XRDPAPI_H_)
#define XRDPAPI_H_

#ifdef __cplusplus
extern "C" {
#endif

#define WTS_CURRENT_SERVER_HANDLE 0
#define WTS_CURRENT_SESSION 0xffffffff
#define WTS_CHANNEL_OPTION_DYNAMIC 0x00000001
#define WTS_CHANNEL_OPTION_DYNAMIC_PRI_LOW 0x00000000
#define WTS_CHANNEL_OPTION_DYNAMIC_PRI_MED 0x00000002
#define WTS_CHANNEL_OPTION_DYNAMIC_PRI_HIGH 0x00000004
#define WTS_CHANNEL_OPTION_DYNAMIC_PRI_REAL 0x00000006
#define WTS_CHANNEL_OPTION_DYNAMIC_PRI_COMPRESS 0x00000008

typedef enum _WTS_VIRTUAL_CLASS
{
  WTSVirtualClientData,
  WTSVirtualFileHandle
} WTS_VIRTUAL_CLASS;

/*
 Reference:
 http://msdn.microsoft.com/en-us/library/windows/desktop/aa383464(v=vs.85).aspx
*/
void*
WTSVirtualChannelOpen(void* hServer, unsigned int SessionId,
                      const char* pVirtualName);
void*
WTSVirtualChannelOpenEx(unsigned int SessionId,
                        const char* pVirtualName,
                        unsigned int flags);
int
WTSVirtualChannelWrite(void* hChannelHandle, const char* Buffer,
                       unsigned int Length, unsigned int* pBytesWritten);
int
WTSVirtualChannelRead(void* hChannelHandle, unsigned int TimeOut,
                      char* Buffer, unsigned int BufferSize,
                      unsigned int* pBytesRead);
int
WTSVirtualChannelClose(void* hChannelHandle);
int
WTSVirtualChannelQuery(void* hChannelHandle, WTS_VIRTUAL_CLASS WtsVirtualClass,
                       void** ppBuffer, unsigned int* pBytesReturned);
void
WTSFreeMemory(void* pMemory);

#ifdef __cplusplus
}
#endif

#endif /* XRDPAPI_H_ */