wf_interface.c

 
#include <freerdp/config.h>
 
#include <winpr/tchar.h>
#include <winpr/windows.h>
#include <winpr/winsock.h>
#include <winpr/assert.h>
 
#include <freerdp/freerdp.h>
#include <freerdp/listener.h>
#include <freerdp/constants.h>
#include <freerdp/channels/wtsvc.h>
#include <freerdp/channels/channels.h>
#include <freerdp/build-config.h>
 
#include "wf_peer.h"
#include "wf_settings.h"
#include "wf_info.h"
 
#include "wf_interface.h"
 
#include <freerdp/log.h>
#define TAG SERVER_TAG("windows")
 
#define SERVER_KEY "Software\\" FREERDP_VENDOR_STRING "\\" FREERDP_PRODUCT_STRING "\\Server"
 
static cbCallback cbEvent = nullptr;
 
int get_screen_info(int id, _TCHAR* name, size_t length, int* width, int* height, int* bpp)
{
  DISPLAY_DEVICE dd = WINPR_C_ARRAY_INIT;
 
  dd.cb = sizeof(DISPLAY_DEVICE);
 
  if (EnumDisplayDevices(nullptr, id, &dd, 0) != 0)
  {
    HDC dc;
 
    if (name != nullptr)
      _stprintf_s(name, length, _T("%s (%s)"), dd.DeviceName, dd.DeviceString);
 
    dc = CreateDC(dd.DeviceName, nullptr, nullptr, nullptr);
    *width = GetDeviceCaps(dc, HORZRES);
    *height = GetDeviceCaps(dc, VERTRES);
    *bpp = GetDeviceCaps(dc, BITSPIXEL);
    // ReleaseDC(nullptr, dc);
    DeleteDC(dc);
  }
  else
  {
    return 0;
  }
 
  return 1;
}
 
void set_screen_id(int id)
{
  wfInfo* wfi;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return;
  wfi->screenID = id;
 
  return;
}
 
static DWORD WINAPI wf_server_main_loop(LPVOID lpParam)
{
  freerdp_listener* instance;
  wfInfo* wfi;
 
  wfi = wf_info_get_instance();
  if (!wfi)
  {
    WLog_ERR(TAG, "Failed to get instance");
    return -1;
  }
 
  wfi->force_all_disconnect = FALSE;
 
  instance = (freerdp_listener*)lpParam;
  WINPR_ASSERT(instance);
  WINPR_ASSERT(instance->GetEventHandles);
  WINPR_ASSERT(instance->CheckFileDescriptor);
 
  while (wfi->force_all_disconnect == FALSE)
  {
    DWORD status;
    HANDLE handles[MAXIMUM_WAIT_OBJECTS] = WINPR_C_ARRAY_INIT;
    DWORD count = instance->GetEventHandles(instance, handles, ARRAYSIZE(handles));
 
    if (count == 0)
    {
      WLog_ERR(TAG, "Failed to get FreeRDP file descriptor");
      break;
    }
 
    status = WaitForMultipleObjects(count, handles, FALSE, INFINITE);
    if (status == WAIT_FAILED)
    {
      WLog_ERR(TAG, "WaitForMultipleObjects failed");
      break;
    }
 
    if (instance->CheckFileDescriptor(instance) != TRUE)
    {
      WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
      break;
    }
  }
 
  WLog_INFO(TAG, "wf_server_main_loop terminating");
  instance->Close(instance);
 
  return 0;
}
 
BOOL wfreerdp_server_start(wfServer* server)
{
  freerdp_listener* instance;
 
  server->instance = freerdp_listener_new();
  server->instance->PeerAccepted = wf_peer_accepted;
  instance = server->instance;
 
  wf_settings_read_dword(HKEY_LOCAL_MACHINE, SERVER_KEY, _T("DefaultPort"), &server->port);
 
  if (!instance->Open(instance, nullptr, (UINT16)server->port))
    return FALSE;
 
  if (!(server->thread =
            CreateThread(nullptr, 0, wf_server_main_loop, (void*)instance, 0, nullptr)))
    return FALSE;
 
  return TRUE;
}
 
BOOL wfreerdp_server_stop(wfServer* server)
{
  wfInfo* wfi = wf_info_get_instance();
  if (!wfi)
    return FALSE;
  WLog_INFO(TAG, "Stopping server");
  wfi->force_all_disconnect = TRUE;
  server->instance->Close(server->instance);
  return TRUE;
}
 
wfServer* wfreerdp_server_new()
{
  WSADATA wsaData = WINPR_C_ARRAY_INIT;
 
  if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
    return nullptr;
 
  if (!WTSRegisterWtsApiFunctionTable(FreeRDP_InitWtsApi()))
    return nullptr;
 
  wfServer* server = (wfServer*)calloc(1, sizeof(wfServer));
 
  if (server)
  {
    server->port = 3389;
  }
 
  cbEvent = nullptr;
 
  return server;
}
 
void wfreerdp_server_free(wfServer* server)
{
  free(server);
 
  WSACleanup();
}
 
BOOL wfreerdp_server_is_running(wfServer* server)
{
  DWORD tStatus;
  BOOL bRet;
 
  bRet = GetExitCodeThread(server->thread, &tStatus);
  if (bRet == 0)
  {
    WLog_ERR(TAG, "Error in call to GetExitCodeThread");
    return FALSE;
  }
 
  if (tStatus == STILL_ACTIVE)
    return TRUE;
  return FALSE;
}
 
UINT32 wfreerdp_server_num_peers()
{
  wfInfo* wfi;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return -1;
  return wfi->peerCount;
}
 
UINT32 wfreerdp_server_get_peer_hostname(int pId, wchar_t* dstStr)
{
  wfInfo* wfi;
  freerdp_peer* peer;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return 0;
  peer = wfi->peers[pId];
 
  if (peer)
  {
    UINT32 sLen;
 
    sLen = strnlen_s(peer->hostname, 50);
    swprintf(dstStr, 50, L"%hs", peer->hostname);
    return sLen;
  }
  else
  {
    WLog_WARN(TAG, "nonexistent peer id=%d", pId);
    return 0;
  }
}
 
BOOL wfreerdp_server_peer_is_local(int pId)
{
  wfInfo* wfi;
  freerdp_peer* peer;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return FALSE;
  peer = wfi->peers[pId];
 
  if (peer)
  {
    return peer->local;
  }
  else
  {
    return FALSE;
  }
}
 
BOOL wfreerdp_server_peer_is_connected(int pId)
{
  wfInfo* wfi;
  freerdp_peer* peer;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return FALSE;
  peer = wfi->peers[pId];
 
  if (peer)
  {
    return peer->connected;
  }
  else
  {
    return FALSE;
  }
}
 
BOOL wfreerdp_server_peer_is_activated(int pId)
{
  wfInfo* wfi;
  freerdp_peer* peer;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return FALSE;
  peer = wfi->peers[pId];
 
  if (peer)
  {
    return peer->activated;
  }
  else
  {
    return FALSE;
  }
}
 
BOOL wfreerdp_server_peer_is_authenticated(int pId)
{
  wfInfo* wfi;
  freerdp_peer* peer;
 
  wfi = wf_info_get_instance();
  if (!wfi)
    return FALSE;
  peer = wfi->peers[pId];
 
  if (peer)
  {
    return peer->authenticated;
  }
  else
  {
    return FALSE;
  }
}
 
void wfreerdp_server_register_callback_event(cbCallback cb)
{
  cbEvent = cb;
}
 
void wfreerdp_server_peer_callback_event(int pId, UINT32 eType)
{
  if (cbEvent)
    cbEvent(pId, eType);
}