xf_client.c

 
#include <freerdp/config.h>
 
#include <math.h>
#include <winpr/cast.h>
#include <winpr/assert.h>
#include <winpr/sspicli.h>
 
#include <float.h>
 
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
 
#ifdef WITH_XRENDER
#include <X11/extensions/Xrender.h>
#endif
 
#ifdef WITH_XI
#include <X11/extensions/XInput.h>
#include <X11/extensions/XInput2.h>
#endif
 
#ifdef WITH_XCURSOR
#include <X11/Xcursor/Xcursor.h>
#endif
 
#ifdef WITH_XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
 
#include <X11/XKBlib.h>
 
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <unistd.h>
#include <string.h>
#include <termios.h>
#include <pthread.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/select.h>
#include <fcntl.h>
#include <sys/stat.h>
 
#include <freerdp/freerdp.h>
#include <freerdp/constants.h>
#include <freerdp/codec/nsc.h>
#include <freerdp/codec/rfx.h>
#include <freerdp/codec/color.h>
#include <freerdp/codec/bitmap.h>
 
#include <freerdp/utils/signal.h>
#include <freerdp/utils/passphrase.h>
#include <freerdp/client/cliprdr.h>
#include <freerdp/client/channels.h>
 
#include <freerdp/client/file.h>
#include <freerdp/client/cmdline.h>
 
#include <winpr/crt.h>
#include <winpr/synch.h>
#include <winpr/file.h>
#include <winpr/print.h>
#include <winpr/sysinfo.h>
 
#include "xf_rail.h"
#if defined(CHANNEL_TSMF_CLIENT)
#include "xf_tsmf.h"
#endif
#include "xf_event.h"
#include "xf_input.h"
#include "xf_cliprdr.h"
#include "xf_disp.h"
#include "xf_video.h"
#include "xf_monitor.h"
#include "xf_graphics.h"
#include "xf_keyboard.h"
#include "xf_channels.h"
#include "xf_client.h"
#include "xfreerdp.h"
#include "xf_utils.h"
 
#include <freerdp/log.h>
#define TAG CLIENT_TAG("x11")
 
#define MIN_PIXEL_DIFF 0.001
 
struct xf_exit_code_map_t
{
  DWORD error;
  int rc;
};
static const struct xf_exit_code_map_t xf_exit_code_map[] = {
  { FREERDP_ERROR_SUCCESS, XF_EXIT_SUCCESS },
  { FREERDP_ERROR_AUTHENTICATION_FAILED, XF_EXIT_AUTH_FAILURE },
  { FREERDP_ERROR_SECURITY_NEGO_CONNECT_FAILED, XF_EXIT_NEGO_FAILURE },
  { FREERDP_ERROR_CONNECT_LOGON_FAILURE, XF_EXIT_LOGON_FAILURE },
  { FREERDP_ERROR_CONNECT_ACCOUNT_LOCKED_OUT, XF_EXIT_ACCOUNT_LOCKED_OUT },
  { FREERDP_ERROR_PRE_CONNECT_FAILED, XF_EXIT_PRE_CONNECT_FAILED },
  { FREERDP_ERROR_CONNECT_UNDEFINED, XF_EXIT_CONNECT_UNDEFINED },
  { FREERDP_ERROR_POST_CONNECT_FAILED, XF_EXIT_POST_CONNECT_FAILED },
  { FREERDP_ERROR_DNS_ERROR, XF_EXIT_DNS_ERROR },
  { FREERDP_ERROR_DNS_NAME_NOT_FOUND, XF_EXIT_DNS_NAME_NOT_FOUND },
  { FREERDP_ERROR_CONNECT_FAILED, XF_EXIT_CONNECT_FAILED },
  { FREERDP_ERROR_MCS_CONNECT_INITIAL_ERROR, XF_EXIT_MCS_CONNECT_INITIAL_ERROR },
  { FREERDP_ERROR_TLS_CONNECT_FAILED, XF_EXIT_TLS_CONNECT_FAILED },
  { FREERDP_ERROR_INSUFFICIENT_PRIVILEGES, XF_EXIT_INSUFFICIENT_PRIVILEGES },
  { FREERDP_ERROR_CONNECT_CANCELLED, XF_EXIT_CONNECT_CANCELLED },
  { FREERDP_ERROR_CONNECT_TRANSPORT_FAILED, XF_EXIT_CONNECT_TRANSPORT_FAILED },
  { FREERDP_ERROR_CONNECT_PASSWORD_EXPIRED, XF_EXIT_CONNECT_PASSWORD_EXPIRED },
  { FREERDP_ERROR_CONNECT_PASSWORD_MUST_CHANGE, XF_EXIT_CONNECT_PASSWORD_MUST_CHANGE },
  { FREERDP_ERROR_CONNECT_KDC_UNREACHABLE, XF_EXIT_CONNECT_KDC_UNREACHABLE },
  { FREERDP_ERROR_CONNECT_ACCOUNT_DISABLED, XF_EXIT_CONNECT_ACCOUNT_DISABLED },
  { FREERDP_ERROR_CONNECT_PASSWORD_CERTAINLY_EXPIRED,
    XF_EXIT_CONNECT_PASSWORD_CERTAINLY_EXPIRED },
  { FREERDP_ERROR_CONNECT_CLIENT_REVOKED, XF_EXIT_CONNECT_CLIENT_REVOKED },
  { FREERDP_ERROR_CONNECT_WRONG_PASSWORD, XF_EXIT_CONNECT_WRONG_PASSWORD },
  { FREERDP_ERROR_CONNECT_ACCESS_DENIED, XF_EXIT_CONNECT_ACCESS_DENIED },
  { FREERDP_ERROR_CONNECT_ACCOUNT_RESTRICTION, XF_EXIT_CONNECT_ACCOUNT_RESTRICTION },
  { FREERDP_ERROR_CONNECT_ACCOUNT_EXPIRED, XF_EXIT_CONNECT_ACCOUNT_EXPIRED },
  { FREERDP_ERROR_CONNECT_LOGON_TYPE_NOT_GRANTED, XF_EXIT_CONNECT_LOGON_TYPE_NOT_GRANTED },
  { FREERDP_ERROR_CONNECT_NO_OR_MISSING_CREDENTIALS, XF_EXIT_CONNECT_NO_OR_MISSING_CREDENTIALS }
};
 
static BOOL xf_setup_x11(xfContext* xfc);
static void xf_teardown_x11(xfContext* xfc);
 
static int xf_map_error_to_exit_code(DWORD error)
{
  for (size_t x = 0; x < ARRAYSIZE(xf_exit_code_map); x++)
  {
    const struct xf_exit_code_map_t* cur = &xf_exit_code_map[x];
    if (cur->error == error)
      return cur->rc;
  }
 
  return XF_EXIT_CONN_FAILED;
}
 
static int (*def_error_handler)(Display*, XErrorEvent*);
static int xf_error_handler_ex(Display* d, XErrorEvent* ev);
static void xf_check_extensions(xfContext* context);
static void xf_window_free(xfContext* xfc);
static BOOL xf_get_pixmap_info(xfContext* xfc);
 
#ifdef WITH_XRENDER
static void xf_draw_screen_scaled(xfContext* xfc, int x, int y, int w, int h)
{
  XTransform transform = { 0 };
  Picture windowPicture = 0;
  Picture primaryPicture = 0;
  XRenderPictureAttributes pa;
  XRenderPictFormat* picFormat = NULL;
  int x2 = 0;
  int y2 = 0;
  const char* filter = NULL;
  WINPR_ASSERT(xfc);
 
  rdpSettings* settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  if (xfc->scaledWidth <= 0 || xfc->scaledHeight <= 0)
  {
    WLog_ERR(TAG, "the current window dimensions are invalid");
    return;
  }
 
  if (freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth) <= 0 ||
      freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight) <= 0)
  {
    WLog_ERR(TAG, "the window dimensions are invalid");
    return;
  }
 
  const double xScalingFactor = 1.0 *
                                freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth) /
                                (double)xfc->scaledWidth;
  const double yScalingFactor = 1.0 *
                                freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight) /
                                (double)xfc->scaledHeight;
  XSetFillStyle(xfc->display, xfc->gc, FillSolid);
  XSetForeground(xfc->display, xfc->gc, 0);
  /* Black out possible space between desktop and window borders */
  {
    XRectangle box1 = { 0, 0, WINPR_ASSERTING_INT_CAST(UINT16, xfc->window->width),
                      WINPR_ASSERTING_INT_CAST(UINT16, xfc->window->height) };
    XRectangle box2 = { WINPR_ASSERTING_INT_CAST(INT16, xfc->offset_x),
                      WINPR_ASSERTING_INT_CAST(INT16, xfc->offset_y),
                      WINPR_ASSERTING_INT_CAST(UINT16, xfc->scaledWidth),
                      WINPR_ASSERTING_INT_CAST(UINT16, xfc->scaledHeight) };
    Region reg1 = XCreateRegion();
    Region reg2 = XCreateRegion();
    XUnionRectWithRegion(&box1, reg1, reg1);
    XUnionRectWithRegion(&box2, reg2, reg2);
 
    if (XSubtractRegion(reg1, reg2, reg1) && !XEmptyRegion(reg1))
    {
      XSetRegion(xfc->display, xfc->gc, reg1);
      XFillRectangle(xfc->display, xfc->window->handle, xfc->gc, 0, 0,
                     WINPR_ASSERTING_INT_CAST(UINT16, xfc->window->width),
                     WINPR_ASSERTING_INT_CAST(UINT16, xfc->window->height));
      XSetClipMask(xfc->display, xfc->gc, None);
    }
 
    XDestroyRegion(reg1);
    XDestroyRegion(reg2);
  }
  picFormat = XRenderFindVisualFormat(xfc->display, xfc->visual);
  pa.subwindow_mode = IncludeInferiors;
  primaryPicture =
      XRenderCreatePicture(xfc->display, xfc->primary, picFormat, CPSubwindowMode, &pa);
  windowPicture =
      XRenderCreatePicture(xfc->display, xfc->window->handle, picFormat, CPSubwindowMode, &pa);
  /* avoid blurry filter when scaling factor is 2x, 3x, etc
   * useful when the client has high-dpi monitor */
  filter = FilterBilinear;
  if (fabs(xScalingFactor - yScalingFactor) < MIN_PIXEL_DIFF)
  {
    const double inverseX = 1.0 / xScalingFactor;
    const double inverseRoundedX = round(inverseX);
    const double absInverse = fabs(inverseX - inverseRoundedX);
 
    if (absInverse < MIN_PIXEL_DIFF)
      filter = FilterNearest;
  }
  XRenderSetPictureFilter(xfc->display, primaryPicture, filter, 0, 0);
  transform.matrix[0][0] = XDoubleToFixed(xScalingFactor);
  transform.matrix[0][1] = XDoubleToFixed(0.0);
  transform.matrix[0][2] = XDoubleToFixed(0.0);
  transform.matrix[1][0] = XDoubleToFixed(0.0);
  transform.matrix[1][1] = XDoubleToFixed(yScalingFactor);
  transform.matrix[1][2] = XDoubleToFixed(0.0);
  transform.matrix[2][0] = XDoubleToFixed(0.0);
  transform.matrix[2][1] = XDoubleToFixed(0.0);
  transform.matrix[2][2] = XDoubleToFixed(1.0);
  /* calculate and fix up scaled coordinates */
  x2 = x + w;
  y2 = y + h;
 
  const double dx1 = floor(x / xScalingFactor);
  const double dy1 = floor(y / yScalingFactor);
  const double dx2 = ceil(x2 / xScalingFactor);
  const double dy2 = ceil(y2 / yScalingFactor);
  x = ((int)dx1) - 1;
  y = ((int)dy1) - 1;
  w = ((int)dx2) + 1 - x;
  h = ((int)dy2) + 1 - y;
  XRenderSetPictureTransform(xfc->display, primaryPicture, &transform);
  XRenderComposite(xfc->display, PictOpSrc, primaryPicture, 0, windowPicture, x, y, 0, 0,
                   xfc->offset_x + x, xfc->offset_y + y, WINPR_ASSERTING_INT_CAST(uint32_t, w),
                   WINPR_ASSERTING_INT_CAST(uint32_t, h));
  XRenderFreePicture(xfc->display, primaryPicture);
  XRenderFreePicture(xfc->display, windowPicture);
}
 
BOOL xf_picture_transform_required(xfContext* xfc)
{
  rdpSettings* settings = NULL;
 
  WINPR_ASSERT(xfc);
 
  settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  if ((xfc->offset_x != 0) || (xfc->offset_y != 0) ||
      (xfc->scaledWidth != (INT64)freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth)) ||
      (xfc->scaledHeight != (INT64)freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight)))
  {
    return TRUE;
  }
 
  return FALSE;
}
#endif /* WITH_XRENDER defined */
 
void xf_draw_screen_(xfContext* xfc, int x, int y, int w, int h, const char* fkt,
                     WINPR_ATTR_UNUSED const char* file, WINPR_ATTR_UNUSED int line)
{
  if (!xfc)
  {
    WLog_DBG(TAG, "called from [%s] xfc=%p", fkt, xfc);
    return;
  }
 
  if (w == 0 || h == 0)
  {
    WLog_WARN(TAG, "invalid width and/or height specified: w=%d h=%d", w, h);
    return;
  }
 
  if (!xfc->window)
  {
    WLog_WARN(TAG, "invalid xfc->window=%p", xfc->window);
    return;
  }
 
#ifdef WITH_XRENDER
 
  if (xf_picture_transform_required(xfc))
  {
    xf_draw_screen_scaled(xfc, x, y, w, h);
    return;
  }
 
#endif
  XCopyArea(xfc->display, xfc->primary, xfc->window->handle, xfc->gc, x, y,
            WINPR_ASSERTING_INT_CAST(uint32_t, w), WINPR_ASSERTING_INT_CAST(uint32_t, h), x, y);
}
 
static BOOL xf_desktop_resize(rdpContext* context)
{
  rdpSettings* settings = NULL;
  xfContext* xfc = (xfContext*)context;
 
  WINPR_ASSERT(xfc);
 
  settings = context->settings;
  WINPR_ASSERT(settings);
 
  if (xfc->primary)
  {
    BOOL same = (xfc->primary == xfc->drawing) ? TRUE : FALSE;
    XFreePixmap(xfc->display, xfc->primary);
 
    WINPR_ASSERT(xfc->depth != 0);
    if (!(xfc->primary =
              XCreatePixmap(xfc->display, xfc->drawable,
                            freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
                            freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight),
                            WINPR_ASSERTING_INT_CAST(uint32_t, xfc->depth))))
      return FALSE;
 
    if (same)
      xfc->drawing = xfc->primary;
  }
 
#ifdef WITH_XRENDER
 
  if (!freerdp_settings_get_bool(settings, FreeRDP_SmartSizing))
  {
    xfc->scaledWidth = WINPR_ASSERTING_INT_CAST(
        int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth));
    xfc->scaledHeight = WINPR_ASSERTING_INT_CAST(
        int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
  }
 
#endif
 
  if (!xfc->fullscreen)
  {
    xf_ResizeDesktopWindow(
        xfc, xfc->window,
        WINPR_ASSERTING_INT_CAST(int,
                                 freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth)),
        WINPR_ASSERTING_INT_CAST(int,
                                 freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight)));
  }
  else
  {
#ifdef WITH_XRENDER
 
    if (!freerdp_settings_get_bool(settings, FreeRDP_SmartSizing))
#endif
    {
      /* Update the saved width and height values the window will be
       * resized to when toggling out of fullscreen */
      xfc->savedWidth = WINPR_ASSERTING_INT_CAST(
          int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth));
      xfc->savedHeight = WINPR_ASSERTING_INT_CAST(
          int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
    }
 
    XSetFunction(xfc->display, xfc->gc, GXcopy);
    XSetFillStyle(xfc->display, xfc->gc, FillSolid);
    XSetForeground(xfc->display, xfc->gc, 0);
    XFillRectangle(xfc->display, xfc->drawable, xfc->gc, 0, 0,
                   freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
                   freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
  }
 
  return TRUE;
}
 
static BOOL xf_paint(xfContext* xfc, const GDI_RGN* region)
{
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(region);
 
  if (xfc->remote_app)
  {
    const RECTANGLE_16 rect = { .left = WINPR_ASSERTING_INT_CAST(UINT16, region->x),
                              .top = WINPR_ASSERTING_INT_CAST(UINT16, region->y),
                              .right =
                                  WINPR_ASSERTING_INT_CAST(UINT16, region->x + region->w),
                              .bottom =
                                  WINPR_ASSERTING_INT_CAST(UINT16, region->y + region->h) };
    xf_rail_paint(xfc, &rect);
  }
  else
  {
    XPutImage(xfc->display, xfc->primary, xfc->gc, xfc->image, region->x, region->y, region->x,
              region->y, WINPR_ASSERTING_INT_CAST(UINT16, region->w),
              WINPR_ASSERTING_INT_CAST(UINT16, region->h));
    xf_draw_screen(xfc, region->x, region->y, region->w, region->h);
  }
  return TRUE;
}
 
static BOOL xf_end_paint(rdpContext* context)
{
  xfContext* xfc = (xfContext*)context;
  rdpGdi* gdi = context->gdi;
 
  if (gdi->suppressOutput)
    return TRUE;
 
  HGDI_DC hdc = gdi->primary->hdc;
 
  if (!xfc->complex_regions)
  {
    const GDI_RGN* rgn = hdc->hwnd->invalid;
    if (rgn->null)
      return TRUE;
    xf_lock_x11(xfc);
    if (!xf_paint(xfc, rgn))
      return FALSE;
    xf_unlock_x11(xfc);
  }
  else
  {
    const INT32 ninvalid = hdc->hwnd->ninvalid;
    const GDI_RGN* cinvalid = hdc->hwnd->cinvalid;
 
    if (hdc->hwnd->ninvalid < 1)
      return TRUE;
 
    xf_lock_x11(xfc);
 
    for (INT32 i = 0; i < ninvalid; i++)
    {
      const GDI_RGN* rgn = &cinvalid[i];
      if (!xf_paint(xfc, rgn))
        return FALSE;
    }
 
    XFlush(xfc->display);
    xf_unlock_x11(xfc);
  }
 
  hdc->hwnd->invalid->null = TRUE;
  hdc->hwnd->ninvalid = 0;
  return TRUE;
}
 
static BOOL xf_sw_desktop_resize(rdpContext* context)
{
  rdpGdi* gdi = context->gdi;
  xfContext* xfc = (xfContext*)context;
  rdpSettings* settings = context->settings;
  BOOL ret = FALSE;
 
  if (!gdi_resize(gdi, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
                  freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight)))
    return FALSE;
 
  /* Do not lock during gdi_resize, there might still be drawing operations in progress.
   * locking will deadlock. */
  xf_lock_x11(xfc);
  if (xfc->image)
  {
    xfc->image->data = NULL;
    XDestroyImage(xfc->image);
  }
 
  WINPR_ASSERT(xfc->depth != 0);
  if (!(xfc->image = XCreateImage(
            xfc->display, xfc->visual, WINPR_ASSERTING_INT_CAST(uint32_t, xfc->depth), ZPixmap, 0,
            (char*)gdi->primary_buffer, WINPR_ASSERTING_INT_CAST(uint32_t, gdi->width),
            WINPR_ASSERTING_INT_CAST(uint32_t, gdi->height), xfc->scanline_pad,
            WINPR_ASSERTING_INT_CAST(int, gdi->stride))))
  {
    goto out;
  }
 
  xfc->image->byte_order = LSBFirst;
  xfc->image->bitmap_bit_order = LSBFirst;
  ret = xf_desktop_resize(context);
out:
  xf_unlock_x11(xfc);
  return ret;
}
 
static BOOL xf_process_x_events(freerdp* instance)
{
  BOOL status = TRUE;
  int pending_status = 1;
  xfContext* xfc = (xfContext*)instance->context;
 
  while (pending_status)
  {
    xf_lock_x11(xfc);
    pending_status = XPending(xfc->display);
 
    if (pending_status)
    {
      XEvent xevent = { 0 };
 
      XNextEvent(xfc->display, &xevent);
      status = xf_event_process(instance, &xevent);
    }
    xf_unlock_x11(xfc);
    if (!status)
      break;
  }
 
  return status;
}
 
static char* xf_window_get_title(rdpSettings* settings)
{
  BOOL port = 0;
  char* windowTitle = NULL;
  size_t size = 0;
  const char* prefix = "FreeRDP:";
 
  if (!settings)
    return NULL;
 
  const char* name = freerdp_settings_get_string(settings, FreeRDP_ServerHostname);
  const char* title = freerdp_settings_get_string(settings, FreeRDP_WindowTitle);
 
  if (title)
    return _strdup(title);
 
  port = (freerdp_settings_get_uint32(settings, FreeRDP_ServerPort) != 3389);
  /* Just assume a window title is never longer than a filename... */
  size = strnlen(name, MAX_PATH) + 16;
  windowTitle = calloc(size, sizeof(char));
 
  if (!windowTitle)
    return NULL;
 
  if (!port)
    (void)sprintf_s(windowTitle, size, "%s %s", prefix, name);
  else
    (void)sprintf_s(windowTitle, size, "%s %s:%" PRIu32, prefix, name,
                    freerdp_settings_get_uint32(settings, FreeRDP_ServerPort));
 
  return windowTitle;
}
 
BOOL xf_create_window(xfContext* xfc)
{
  XGCValues gcv = { 0 };
  XEvent xevent = { 0 };
  char* windowTitle = NULL;
 
  WINPR_ASSERT(xfc);
  rdpSettings* settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  int width =
      WINPR_ASSERTING_INT_CAST(int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth));
  int height =
      WINPR_ASSERTING_INT_CAST(int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
 
  const XSetWindowAttributes empty = { 0 };
  xfc->attribs = empty;
 
  if (xfc->remote_app)
    xfc->depth = 32;
  else
    xfc->depth = DefaultDepthOfScreen(xfc->screen);
 
  XVisualInfo vinfo = { 0 };
  if (XMatchVisualInfo(xfc->display, xfc->screen_number, xfc->depth, TrueColor, &vinfo))
  {
    Window root = XDefaultRootWindow(xfc->display);
    xfc->visual = vinfo.visual;
    xfc->attribs.colormap = xfc->colormap =
        XCreateColormap(xfc->display, root, vinfo.visual, AllocNone);
  }
  else
  {
    if (xfc->remote_app)
    {
      WLog_WARN(TAG, "running in remote app mode, but XServer does not support transparency");
      WLog_WARN(TAG, "display of remote applications might be distorted (black frames, ...)");
    }
    xfc->depth = DefaultDepthOfScreen(xfc->screen);
    xfc->visual = DefaultVisual(xfc->display, xfc->screen_number);
    xfc->attribs.colormap = xfc->colormap = DefaultColormap(xfc->display, xfc->screen_number);
  }
 
  /*
   * Detect if the server visual has an inverted colormap
   * (BGR vs RGB, or red being the least significant byte)
   */
  if (vinfo.red_mask & 0xFF)
  {
    xfc->invert = FALSE;
  }
 
  if (!xfc->remote_app)
  {
    xfc->attribs.background_pixel = BlackPixelOfScreen(xfc->screen);
    xfc->attribs.border_pixel = WhitePixelOfScreen(xfc->screen);
    xfc->attribs.backing_store = xfc->primary ? NotUseful : Always;
    xfc->attribs.override_redirect = False;
 
    xfc->attribs.bit_gravity = NorthWestGravity;
    xfc->attribs.win_gravity = NorthWestGravity;
    xfc->attribs_mask = CWBackPixel | CWBackingStore | CWOverrideRedirect | CWColormap |
                        CWBorderPixel | CWWinGravity | CWBitGravity;
 
#ifdef WITH_XRENDER
    xfc->offset_x = 0;
    xfc->offset_y = 0;
#endif
    windowTitle = xf_window_get_title(settings);
 
    if (!windowTitle)
      return FALSE;
 
#ifdef WITH_XRENDER
 
    if (freerdp_settings_get_bool(settings, FreeRDP_SmartSizing) && !xfc->fullscreen)
    {
      if (freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingWidth) > 0)
        width = WINPR_ASSERTING_INT_CAST(
            int, freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingWidth));
 
      if (freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingHeight) > 0)
        height = WINPR_ASSERTING_INT_CAST(
            int, freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingHeight));
 
      xfc->scaledWidth = width;
      xfc->scaledHeight = height;
    }
 
#endif
    xfc->window = xf_CreateDesktopWindow(xfc, windowTitle, width, height);
    free(windowTitle);
 
    if (xfc->fullscreen)
      xf_SetWindowFullscreen(xfc, xfc->window, xfc->fullscreen);
 
    xfc->unobscured = (xevent.xvisibility.state == VisibilityUnobscured);
    XSetWMProtocols(xfc->display, xfc->window->handle, &(xfc->WM_DELETE_WINDOW), 1);
    xfc->drawable = xfc->window->handle;
  }
  else
  {
    xfc->attribs.border_pixel = 0;
    xfc->attribs.background_pixel = 0;
    xfc->attribs.backing_store = xfc->primary ? NotUseful : Always;
    xfc->attribs.override_redirect = False;
 
    xfc->attribs.bit_gravity = NorthWestGravity;
    xfc->attribs.win_gravity = NorthWestGravity;
    xfc->attribs_mask = CWBackPixel | CWBackingStore | CWOverrideRedirect | CWColormap |
                        CWBorderPixel | CWWinGravity | CWBitGravity;
 
    xfc->drawable = xf_CreateDummyWindow(xfc);
  }
 
  if (!xfc->gc)
    xfc->gc = XCreateGC(xfc->display, xfc->drawable, GCGraphicsExposures, &gcv);
 
  WINPR_ASSERT(xfc->depth != 0);
  if (!xfc->primary)
    xfc->primary = XCreatePixmap(xfc->display, xfc->drawable,
                                 freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
                                 freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight),
                                 WINPR_ASSERTING_INT_CAST(uint32_t, xfc->depth));
 
  xfc->drawing = xfc->primary;
 
  if (!xfc->bitmap_mono)
    xfc->bitmap_mono = XCreatePixmap(xfc->display, xfc->drawable, 8, 8, 1);
 
  if (!xfc->gc_mono)
    xfc->gc_mono = XCreateGC(xfc->display, xfc->bitmap_mono, GCGraphicsExposures, &gcv);
 
  XSetFunction(xfc->display, xfc->gc, GXcopy);
  XSetFillStyle(xfc->display, xfc->gc, FillSolid);
  XSetForeground(xfc->display, xfc->gc, BlackPixelOfScreen(xfc->screen));
  XFillRectangle(xfc->display, xfc->primary, xfc->gc, 0, 0,
                 freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
                 freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
  XFlush(xfc->display);
 
  return TRUE;
}
 
BOOL xf_create_image(xfContext* xfc)
{
  WINPR_ASSERT(xfc);
  if (!xfc->image)
  {
    const rdpSettings* settings = xfc->common.context.settings;
    rdpGdi* cgdi = xfc->common.context.gdi;
    WINPR_ASSERT(cgdi);
 
    WINPR_ASSERT(xfc->depth != 0);
    xfc->image =
        XCreateImage(xfc->display, xfc->visual, WINPR_ASSERTING_INT_CAST(uint32_t, xfc->depth),
                     ZPixmap, 0, (char*)cgdi->primary_buffer,
                     freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
                     freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight),
                     xfc->scanline_pad, WINPR_ASSERTING_INT_CAST(int, cgdi->stride));
    xfc->image->byte_order = LSBFirst;
    xfc->image->bitmap_bit_order = LSBFirst;
  }
  return TRUE;
}
 
static void xf_window_free(xfContext* xfc)
{
  if (xfc->window)
  {
    xf_DestroyDesktopWindow(xfc, xfc->window);
    xfc->window = NULL;
  }
 
#if defined(CHANNEL_TSMF_CLIENT)
  if (xfc->xv_context)
  {
    xf_tsmf_uninit(xfc, NULL);
    xfc->xv_context = NULL;
  }
#endif
 
  if (xfc->image)
  {
    xfc->image->data = NULL;
    XDestroyImage(xfc->image);
    xfc->image = NULL;
  }
 
  if (xfc->bitmap_mono)
  {
    XFreePixmap(xfc->display, xfc->bitmap_mono);
    xfc->bitmap_mono = 0;
  }
 
  if (xfc->gc_mono)
  {
    XFreeGC(xfc->display, xfc->gc_mono);
    xfc->gc_mono = 0;
  }
 
  if (xfc->primary)
  {
    XFreePixmap(xfc->display, xfc->primary);
    xfc->primary = 0;
  }
 
  if (xfc->gc)
  {
    XFreeGC(xfc->display, xfc->gc);
    xfc->gc = 0;
  }
}
 
void xf_toggle_fullscreen(xfContext* xfc)
{
  WindowStateChangeEventArgs e = { 0 };
  rdpContext* context = (rdpContext*)xfc;
  rdpSettings* settings = context->settings;
 
  /*
    when debugging, ungrab keyboard when toggling fullscreen
    to allow keyboard usage on the debugger
  */
  if (xfc->debug)
    xf_ungrab(xfc);
 
  xfc->fullscreen = (xfc->fullscreen) ? FALSE : TRUE;
  xfc->decorations =
      (xfc->fullscreen) ? FALSE : freerdp_settings_get_bool(settings, FreeRDP_Decorations);
  xf_SetWindowFullscreen(xfc, xfc->window, xfc->fullscreen);
  EventArgsInit(&e, "xfreerdp");
  e.state = xfc->fullscreen ? FREERDP_WINDOW_STATE_FULLSCREEN : 0;
  PubSub_OnWindowStateChange(context->pubSub, context, &e);
}
 
void xf_minimize(xfContext* xfc)
{
  WindowStateChangeEventArgs e = { 0 };
  rdpContext* context = (rdpContext*)xfc;
  WINPR_ASSERT(context);
 
  /*
    when debugging, ungrab keyboard when toggling fullscreen
    to allow keyboard usage on the debugger
  */
  if (xfc->debug)
    xf_ungrab(xfc);
 
  xf_SetWindowMinimized(xfc, xfc->window);
 
  e.state = xfc->fullscreen ? FREERDP_WINDOW_STATE_FULLSCREEN : 0;
  PubSub_OnWindowStateChange(context->pubSub, context, &e);
}
 
void xf_lock_x11_(xfContext* xfc, WINPR_ATTR_UNUSED const char* fkt)
{
  if (!xfc->UseXThreads)
    (void)WaitForSingleObject(xfc->mutex, INFINITE);
  else
    XLockDisplay(xfc->display);
 
  xfc->locked++;
}
 
void xf_unlock_x11_(xfContext* xfc, WINPR_ATTR_UNUSED const char* fkt)
{
  if (xfc->locked == 0)
    WLog_WARN(TAG, "X11: trying to unlock although not locked!");
  else
    xfc->locked--;
 
  if (!xfc->UseXThreads)
    (void)ReleaseMutex(xfc->mutex);
  else
    XUnlockDisplay(xfc->display);
}
 
static BOOL xf_get_pixmap_info(xfContext* xfc)
{
  int pf_count = 0;
  XPixmapFormatValues* pfs = NULL;
 
  WINPR_ASSERT(xfc->display);
  pfs = XListPixmapFormats(xfc->display, &pf_count);
 
  if (!pfs)
  {
    WLog_ERR(TAG, "XListPixmapFormats failed");
    return 1;
  }
 
  WINPR_ASSERT(xfc->depth != 0);
  for (int i = 0; i < pf_count; i++)
  {
    const XPixmapFormatValues* pf = &pfs[i];
 
    if (pf->depth == xfc->depth)
    {
      xfc->scanline_pad = pf->scanline_pad;
      break;
    }
  }
 
  XFree(pfs);
  if ((xfc->visual == NULL) || (xfc->scanline_pad == 0))
    return FALSE;
 
  return TRUE;
}
 
static int xf_error_handler(Display* d, XErrorEvent* ev)
{
  char buf[256] = { 0 };
  XGetErrorText(d, ev->error_code, buf, sizeof(buf));
  WLog_ERR(TAG, "%s", buf);
  winpr_log_backtrace(TAG, WLOG_ERROR, 20);
 
  if (def_error_handler)
    return def_error_handler(d, ev);
 
  return 0;
}
 
static int xf_error_handler_ex(Display* d, XErrorEvent* ev)
{
  /*
   * ungrab the keyboard, in case a debugger is running in
   * another window. This make xf_error_handler() a potential
   * debugger breakpoint.
   */
 
  XUngrabKeyboard(d, CurrentTime);
  XUngrabPointer(d, CurrentTime);
  return xf_error_handler(d, ev);
}
 
static BOOL xf_play_sound(rdpContext* context, const PLAY_SOUND_UPDATE* play_sound)
{
  xfContext* xfc = (xfContext*)context;
  WINPR_UNUSED(play_sound);
  XkbBell(xfc->display, None, 100, 0);
  return TRUE;
}
 
static void xf_check_extensions(xfContext* context)
{
  int xkb_opcode = 0;
  int xkb_event = 0;
  int xkb_error = 0;
  int xkb_major = XkbMajorVersion;
  int xkb_minor = XkbMinorVersion;
 
  if (XkbLibraryVersion(&xkb_major, &xkb_minor) &&
      XkbQueryExtension(context->display, &xkb_opcode, &xkb_event, &xkb_error, &xkb_major,
                        &xkb_minor))
  {
    context->xkbAvailable = TRUE;
  }
 
#ifdef WITH_XRENDER
  {
    int xrender_event_base = 0;
    int xrender_error_base = 0;
 
    if (XRenderQueryExtension(context->display, &xrender_event_base, &xrender_error_base))
    {
      context->xrenderAvailable = TRUE;
    }
  }
#endif
}
 
#ifdef WITH_XI
/* Input device which does NOT have the correct mapping. We must disregard */
/* this device when trying to find the input device which is the pointer.  */
static const char TEST_PTR_STR[] = "Virtual core XTEST pointer";
static const size_t TEST_PTR_LEN = sizeof(TEST_PTR_STR) / sizeof(char);
#endif /* WITH_XI */
 
static void xf_get_x11_button_map(xfContext* xfc, unsigned char* x11_map)
{
#ifdef WITH_XI
  int opcode = 0;
  int event = 0;
  int error = 0;
  XDevice* ptr_dev = NULL;
  XExtensionVersion* version = NULL;
  XDeviceInfo* devices1 = NULL;
  XIDeviceInfo* devices2 = NULL;
  int num_devices = 0;
 
  if (XQueryExtension(xfc->display, "XInputExtension", &opcode, &event, &error))
  {
    WLog_DBG(TAG, "Searching for XInput pointer device");
    ptr_dev = NULL;
    /* loop through every device, looking for a pointer */
    version = XGetExtensionVersion(xfc->display, INAME);
 
    if (version->major_version >= 2)
    {
      /* XID of pointer device using XInput version 2 */
      devices2 = XIQueryDevice(xfc->display, XIAllDevices, &num_devices);
 
      if (devices2)
      {
        for (int i = 0; i < num_devices; ++i)
        {
          XIDeviceInfo* dev = &devices2[i];
          if ((dev->use == XISlavePointer) &&
              (strncmp(dev->name, TEST_PTR_STR, TEST_PTR_LEN) != 0))
          {
            ptr_dev = XOpenDevice(xfc->display,
                                  WINPR_ASSERTING_INT_CAST(uint32_t, dev->deviceid));
            if (ptr_dev)
              break;
          }
        }
 
        XIFreeDeviceInfo(devices2);
      }
    }
    else
    {
      /* XID of pointer device using XInput version 1 */
      devices1 = XListInputDevices(xfc->display, &num_devices);
 
      if (devices1)
      {
        for (int i = 0; i < num_devices; ++i)
        {
          if ((devices1[i].use == IsXExtensionPointer) &&
              (strncmp(devices1[i].name, TEST_PTR_STR, TEST_PTR_LEN) != 0))
          {
            ptr_dev = XOpenDevice(xfc->display, devices1[i].id);
            if (ptr_dev)
              break;
          }
        }
 
        XFreeDeviceList(devices1);
      }
    }
 
    XFree(version);
 
    /* get button mapping from input extension if there is a pointer device; */
    /* otherwise leave unchanged.                                            */
    if (ptr_dev)
    {
      WLog_DBG(TAG, "Pointer device: %d", ptr_dev->device_id);
      XGetDeviceButtonMapping(xfc->display, ptr_dev, x11_map, NUM_BUTTONS_MAPPED);
      XCloseDevice(xfc->display, ptr_dev);
    }
    else
    {
      WLog_DBG(TAG, "No pointer device found!");
    }
  }
  else
#endif /* WITH_XI */
  {
    WLog_DBG(TAG, "Get global pointer mapping (no XInput)");
    XGetPointerMapping(xfc->display, x11_map, NUM_BUTTONS_MAPPED);
  }
}
 
/* Assignment of physical (not logical) mouse buttons to wire flags. */
/* Notice that the middle button is 2 in X11, but 3 in RDP.          */
static const button_map xf_button_flags[NUM_BUTTONS_MAPPED] = {
  { Button1, PTR_FLAGS_BUTTON1 },
  { Button2, PTR_FLAGS_BUTTON3 },
  { Button3, PTR_FLAGS_BUTTON2 },
  { Button4, PTR_FLAGS_WHEEL | 0x78 },
  /* Negative value is 9bit twos complement */
  { Button5, PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | (0x100 - 0x78) },
  { 6, PTR_FLAGS_HWHEEL | PTR_FLAGS_WHEEL_NEGATIVE | (0x100 - 0x78) },
  { 7, PTR_FLAGS_HWHEEL | 0x78 },
  { 8, PTR_XFLAGS_BUTTON1 },
  { 9, PTR_XFLAGS_BUTTON2 },
  { 97, PTR_XFLAGS_BUTTON1 },
  { 112, PTR_XFLAGS_BUTTON2 }
};
 
static UINT16 get_flags_for_button(size_t button)
{
  for (size_t x = 0; x < ARRAYSIZE(xf_button_flags); x++)
  {
    const button_map* map = &xf_button_flags[x];
 
    if (map->button == button)
      return map->flags;
  }
 
  return 0;
}
 
void xf_button_map_init(xfContext* xfc)
{
  size_t pos = 0;
  /* loop counter for array initialization */
 
  /* logical mouse button which is used for each physical mouse  */
  /* button (indexed from zero). This is the default map.        */
  unsigned char x11_map[112] = { 0 };
 
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(xfc->common.context.settings);
 
  x11_map[0] = Button1;
  x11_map[1] = Button2;
  x11_map[2] = Button3;
  x11_map[3] = Button4;
  x11_map[4] = Button5;
  x11_map[5] = 6;
  x11_map[6] = 7;
  x11_map[7] = 8;
  x11_map[8] = 9;
  x11_map[96] = 97;
  x11_map[111] = 112;
 
  /* query system for actual remapping */
  if (freerdp_settings_get_bool(xfc->common.context.settings, FreeRDP_UnmapButtons))
  {
    xf_get_x11_button_map(xfc, x11_map);
  }
 
  /* iterate over all (mapped) physical buttons; for each of them */
  /* find the logical button in X11, and assign to this the       */
  /* appropriate value to send over the RDP wire.                 */
  for (size_t physical = 0; physical < ARRAYSIZE(x11_map); ++physical)
  {
    const unsigned char logical = x11_map[physical];
    const UINT16 flags = get_flags_for_button(logical);
 
    if ((logical != 0) && (flags != 0))
    {
      if (pos >= NUM_BUTTONS_MAPPED)
      {
        WLog_ERR(TAG, "Failed to map mouse button to RDP button, no space");
      }
      else
      {
        button_map* map = &xfc->button_map[pos++];
        map->button = logical;
        map->flags = get_flags_for_button(physical + Button1);
      }
    }
  }
}
 
static BOOL xf_pre_connect(freerdp* instance)
{
  UINT32 maxWidth = 0;
  UINT32 maxHeight = 0;
 
  WINPR_ASSERT(instance);
 
  rdpContext* context = instance->context;
  WINPR_ASSERT(context);
  xfContext* xfc = (xfContext*)context;
 
  rdpSettings* settings = context->settings;
  WINPR_ASSERT(settings);
 
  if (!freerdp_settings_set_bool(settings, FreeRDP_CertificateCallbackPreferPEM, TRUE))
    return FALSE;
 
  if (!freerdp_settings_get_bool(settings, FreeRDP_AuthenticationOnly))
  {
    if (!xf_setup_x11(xfc))
      return FALSE;
  }
 
  if (!freerdp_settings_set_uint32(settings, FreeRDP_OsMajorType, OSMAJORTYPE_UNIX))
    return FALSE;
  if (!freerdp_settings_set_uint32(settings, FreeRDP_OsMinorType, OSMINORTYPE_NATIVE_XSERVER))
    return FALSE;
  PubSub_SubscribeChannelConnected(context->pubSub, xf_OnChannelConnectedEventHandler);
  PubSub_SubscribeChannelDisconnected(context->pubSub, xf_OnChannelDisconnectedEventHandler);
 
  if (!freerdp_settings_get_string(settings, FreeRDP_Username) &&
      !freerdp_settings_get_bool(settings, FreeRDP_CredentialsFromStdin) &&
      !freerdp_settings_get_bool(settings, FreeRDP_SmartcardLogon))
  {
    char login_name[MAX_PATH] = { 0 };
    ULONG size = sizeof(login_name) - 1;
 
    if (GetUserNameExA(NameSamCompatible, login_name, &size))
    {
      if (!freerdp_settings_set_string(settings, FreeRDP_Username, login_name))
        return FALSE;
 
      WLog_INFO(TAG, "No user name set. - Using login name: %s",
                freerdp_settings_get_string(settings, FreeRDP_Username));
    }
  }
 
  if (freerdp_settings_get_bool(settings, FreeRDP_AuthenticationOnly))
  {
    /* Check +auth-only has a username and password. */
    if (!freerdp_settings_get_string(settings, FreeRDP_Password))
    {
      WLog_INFO(TAG, "auth-only, but no password set. Please provide one.");
      return FALSE;
    }
 
    WLog_INFO(TAG, "Authentication only. Don't connect to X.");
  }
 
  if (!freerdp_settings_get_bool(settings, FreeRDP_AuthenticationOnly))
  {
    const char* KeyboardRemappingList = freerdp_settings_get_string(
        xfc->common.context.settings, FreeRDP_KeyboardRemappingList);
 
    xfc->remap_table = freerdp_keyboard_remap_string_to_list(KeyboardRemappingList);
    if (!xfc->remap_table)
      return FALSE;
    if (!xf_keyboard_init(xfc))
      return FALSE;
    if (!xf_keyboard_action_script_init(xfc))
      return FALSE;
    if (!xf_detect_monitors(xfc, &maxWidth, &maxHeight))
      return FALSE;
  }
 
  if (maxWidth && maxHeight && !freerdp_settings_get_bool(settings, FreeRDP_SmartSizing))
  {
    if (!freerdp_settings_set_uint32(settings, FreeRDP_DesktopWidth, maxWidth))
      return FALSE;
    if (!freerdp_settings_set_uint32(settings, FreeRDP_DesktopHeight, maxHeight))
      return FALSE;
  }
 
#ifdef WITH_XRENDER
 
  if (freerdp_settings_get_bool(settings, FreeRDP_Fullscreen) &&
      freerdp_settings_get_bool(settings, FreeRDP_SmartSizing) &&
      (freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingWidth) > 0) &&
      (freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingHeight) > 0))
  {
    if (!freerdp_settings_set_uint32(
            settings, FreeRDP_DesktopWidth,
            freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingWidth)))
      return FALSE;
    if (!freerdp_settings_set_uint32(
            settings, FreeRDP_DesktopHeight,
            freerdp_settings_get_uint32(settings, FreeRDP_SmartSizingHeight)))
      return FALSE;
  }
 
#endif
  xfc->fullscreen = freerdp_settings_get_bool(settings, FreeRDP_Fullscreen);
  xfc->decorations = freerdp_settings_get_bool(settings, FreeRDP_Decorations);
  xfc->grab_keyboard = freerdp_settings_get_bool(settings, FreeRDP_GrabKeyboard);
  xfc->fullscreen_toggle = freerdp_settings_get_bool(settings, FreeRDP_ToggleFullscreen);
  if (!freerdp_settings_get_bool(settings, FreeRDP_AuthenticationOnly))
    xf_button_map_init(xfc);
  return TRUE;
}
 
static BOOL xf_inject_keypress(rdpContext* context, const char* buffer, size_t size)
{
  WCHAR wbuffer[64] = { 0 };
  const SSIZE_T len = ConvertUtf8NToWChar(buffer, size, wbuffer, ARRAYSIZE(wbuffer));
  if (len < 0)
    return FALSE;
 
  rdpInput* input = context->input;
  WINPR_ASSERT(input);
 
  for (SSIZE_T x = 0; x < len; x++)
  {
    const WCHAR code = wbuffer[x];
    freerdp_input_send_unicode_keyboard_event(input, 0, code);
    Sleep(5);
    freerdp_input_send_unicode_keyboard_event(input, KBD_FLAGS_RELEASE, code);
    Sleep(5);
  }
  return TRUE;
}
 
static BOOL xf_process_pipe(rdpContext* context, const char* pipe)
{
  int fd = open(pipe, O_NONBLOCK | O_RDONLY);
  if (fd < 0)
  {
    char ebuffer[256] = { 0 };
    WLog_ERR(TAG, "pipe '%s' open returned %s [%d]", pipe,
             winpr_strerror(errno, ebuffer, sizeof(ebuffer)), errno);
    return FALSE;
  }
  while (!freerdp_shall_disconnect_context(context))
  {
    char buffer[64] = { 0 };
    ssize_t rd = read(fd, buffer, sizeof(buffer) - 1);
    if (rd == 0)
    {
      char ebuffer[256] = { 0 };
      if ((errno == EAGAIN) || (errno == 0))
      {
        Sleep(100);
        continue;
      }
 
      // EOF, abort reading.
      WLog_ERR(TAG, "pipe '%s' read returned %s [%d]", pipe,
               winpr_strerror(errno, ebuffer, sizeof(ebuffer)), errno);
      break;
    }
    else if (rd < 0)
    {
      char ebuffer[256] = { 0 };
      WLog_ERR(TAG, "pipe '%s' read returned %s [%d]", pipe,
               winpr_strerror(errno, ebuffer, sizeof(ebuffer)), errno);
      break;
    }
    else
    {
      if (!xf_inject_keypress(context, buffer, WINPR_ASSERTING_INT_CAST(size_t, rd)))
        break;
    }
  }
  close(fd);
  return TRUE;
}
 
static void cleanup_pipe(WINPR_ATTR_UNUSED int signum, WINPR_ATTR_UNUSED const char* signame,
                         void* context)
{
  const char* pipe = context;
  if (!pipe)
    return;
  unlink(pipe);
}
 
static DWORD WINAPI xf_handle_pipe(void* arg)
{
  xfContext* xfc = arg;
  WINPR_ASSERT(xfc);
 
  rdpContext* context = &xfc->common.context;
  WINPR_ASSERT(context);
 
  rdpSettings* settings = context->settings;
  WINPR_ASSERT(settings);
 
  const char* pipe = freerdp_settings_get_string(settings, FreeRDP_KeyboardPipeName);
  WINPR_ASSERT(pipe);
 
  const int rc = mkfifo(pipe, S_IWUSR | S_IRUSR);
  if (rc != 0)
  {
    char ebuffer[256] = { 0 };
    WLog_ERR(TAG, "Failed to create named pipe '%s': %s [%d]", pipe,
             winpr_strerror(errno, ebuffer, sizeof(ebuffer)), errno);
    return 0;
  }
 
  void* ctx = WINPR_CAST_CONST_PTR_AWAY(pipe, void*);
  freerdp_add_signal_cleanup_handler(ctx, cleanup_pipe);
 
  xf_process_pipe(context, pipe);
 
  freerdp_del_signal_cleanup_handler(ctx, cleanup_pipe);
 
  unlink(pipe);
  return 0;
}
 
static BOOL xf_post_connect(freerdp* instance)
{
  ResizeWindowEventArgs e = { 0 };
 
  WINPR_ASSERT(instance);
  xfContext* xfc = (xfContext*)instance->context;
  rdpContext* context = instance->context;
  WINPR_ASSERT(context);
 
  rdpSettings* settings = context->settings;
  WINPR_ASSERT(settings);
 
  rdpUpdate* update = context->update;
  WINPR_ASSERT(update);
 
  if (freerdp_settings_get_bool(settings, FreeRDP_RemoteApplicationMode))
    xfc->remote_app = TRUE;
 
  if (!xf_create_window(xfc))
    return FALSE;
 
  if (!xf_get_pixmap_info(xfc))
    return FALSE;
 
  if (!gdi_init(instance, xf_get_local_color_format(xfc, TRUE)))
    return FALSE;
 
  if (!xf_create_image(xfc))
    return FALSE;
 
  if (!xf_register_pointer(context->graphics))
    return FALSE;
 
#ifdef WITH_XRENDER
  xfc->scaledWidth =
      WINPR_ASSERTING_INT_CAST(int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth));
  xfc->scaledHeight =
      WINPR_ASSERTING_INT_CAST(int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
  xfc->offset_x = 0;
  xfc->offset_y = 0;
#endif
 
  if (!xfc->xrenderAvailable)
  {
    if (freerdp_settings_get_bool(settings, FreeRDP_SmartSizing))
    {
      WLog_ERR(TAG, "XRender not available: disabling smart-sizing");
      if (!freerdp_settings_set_bool(settings, FreeRDP_SmartSizing, FALSE))
        return FALSE;
    }
 
    if (freerdp_settings_get_bool(settings, FreeRDP_MultiTouchGestures))
    {
      WLog_ERR(TAG, "XRender not available: disabling local multi-touch gestures");
      if (!freerdp_settings_set_bool(settings, FreeRDP_MultiTouchGestures, FALSE))
        return FALSE;
    }
  }
 
  update->DesktopResize = xf_sw_desktop_resize;
  update->EndPaint = xf_end_paint;
  update->PlaySound = xf_play_sound;
  update->SetKeyboardIndicators = xf_keyboard_set_indicators;
  update->SetKeyboardImeStatus = xf_keyboard_set_ime_status;
 
  const BOOL serverIsWindowsPlatform =
      (freerdp_settings_get_uint32(settings, FreeRDP_OsMajorType) == OSMAJORTYPE_WINDOWS);
  if (freerdp_settings_get_bool(settings, FreeRDP_RedirectClipboard) &&
      !(xfc->clipboard = xf_clipboard_new(xfc, !serverIsWindowsPlatform)))
    return FALSE;
 
  if (!(xfc->xfDisp = xf_disp_new(xfc)))
    return FALSE;
 
  const char* pipe = freerdp_settings_get_string(settings, FreeRDP_KeyboardPipeName);
  if (pipe)
  {
    xfc->pipethread = CreateThread(NULL, 0, xf_handle_pipe, xfc, 0, NULL);
    if (!xfc->pipethread)
      return FALSE;
  }
 
  EventArgsInit(&e, "xfreerdp");
  e.width =
      WINPR_ASSERTING_INT_CAST(int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth));
  e.height =
      WINPR_ASSERTING_INT_CAST(int, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight));
  PubSub_OnResizeWindow(context->pubSub, xfc, &e);
  return TRUE;
}
 
static void xf_post_disconnect(freerdp* instance)
{
  xfContext* xfc = NULL;
  rdpContext* context = NULL;
 
  if (!instance || !instance->context)
    return;
 
  context = instance->context;
  xfc = (xfContext*)context;
  PubSub_UnsubscribeChannelConnected(instance->context->pubSub,
                                     xf_OnChannelConnectedEventHandler);
  PubSub_UnsubscribeChannelDisconnected(instance->context->pubSub,
                                        xf_OnChannelDisconnectedEventHandler);
  gdi_free(instance);
 
  if (xfc->pipethread)
  {
    (void)WaitForSingleObject(xfc->pipethread, INFINITE);
    (void)CloseHandle(xfc->pipethread);
    xfc->pipethread = NULL;
  }
  if (xfc->clipboard)
  {
    xf_clipboard_free(xfc->clipboard);
    xfc->clipboard = NULL;
  }
 
  if (xfc->xfDisp)
  {
    xf_disp_free(xfc->xfDisp);
    xfc->xfDisp = NULL;
  }
 
  if ((xfc->window != NULL) && (xfc->drawable == xfc->window->handle))
    xfc->drawable = 0;
  else
    xf_DestroyDummyWindow(xfc, xfc->drawable);
 
  freerdp_keyboard_remap_free(xfc->remap_table);
  xfc->remap_table = NULL;
 
  xf_window_free(xfc);
}
 
static void xf_post_final_disconnect(freerdp* instance)
{
  xfContext* xfc = NULL;
  rdpContext* context = NULL;
 
  if (!instance || !instance->context)
    return;
 
  context = instance->context;
  xfc = (xfContext*)context;
 
  xf_keyboard_free(xfc);
  xf_teardown_x11(xfc);
}
 
static int xf_logon_error_info(freerdp* instance, UINT32 data, UINT32 type)
{
  xfContext* xfc = (xfContext*)instance->context;
  const char* str_data = freerdp_get_logon_error_info_data(data);
  const char* str_type = freerdp_get_logon_error_info_type(type);
  WLog_INFO(TAG, "Logon Error Info %s [%s]", str_data, str_type);
  if (type != LOGON_MSG_SESSION_CONTINUE)
  {
    xf_rail_disable_remoteapp_mode(xfc);
  }
  return 1;
}
 
static BOOL handle_window_events(freerdp* instance)
{
  if (!xf_process_x_events(instance))
  {
    WLog_DBG(TAG, "Closed from X11");
    return FALSE;
  }
 
  return TRUE;
}
 
static DWORD WINAPI xf_client_thread(LPVOID param)
{
  DWORD exit_code = 0;
  DWORD waitStatus = 0;
  HANDLE inputEvent = NULL;
  HANDLE timer = NULL;
  LARGE_INTEGER due = { 0 };
  TimerEventArgs timerEvent = { 0 };
 
  EventArgsInit(&timerEvent, "xfreerdp");
  freerdp* instance = (freerdp*)param;
  WINPR_ASSERT(instance);
 
  const BOOL status = freerdp_connect(instance);
  rdpContext* context = instance->context;
  WINPR_ASSERT(context);
  xfContext* xfc = (xfContext*)instance->context;
  WINPR_ASSERT(xfc);
 
  rdpSettings* settings = context->settings;
  WINPR_ASSERT(settings);
 
  if (!status)
  {
    UINT32 error = freerdp_get_last_error(instance->context);
    exit_code = (uint32_t)xf_map_error_to_exit_code(error);
  }
  else
    exit_code = XF_EXIT_SUCCESS;
 
  if (!status)
    goto end;
 
  /* --authonly ? */
  if (freerdp_settings_get_bool(settings, FreeRDP_AuthenticationOnly))
  {
    WLog_ERR(TAG, "Authentication only, exit status %" PRId32 "", !status);
    goto disconnect;
  }
 
  if (!status)
  {
    WLog_ERR(TAG, "Freerdp connect error exit status %" PRId32 "", !status);
    exit_code = freerdp_error_info(instance);
 
    if (freerdp_get_last_error(instance->context) == FREERDP_ERROR_AUTHENTICATION_FAILED)
      exit_code = XF_EXIT_AUTH_FAILURE;
    else if (exit_code == ERRINFO_SUCCESS)
      exit_code = XF_EXIT_CONN_FAILED;
 
    goto disconnect;
  }
 
  timer = CreateWaitableTimerA(NULL, FALSE, "mainloop-periodic-timer");
 
  if (!timer)
  {
    WLog_ERR(TAG, "failed to create timer");
    goto disconnect;
  }
 
  due.QuadPart = 0;
 
  if (!SetWaitableTimer(timer, &due, 20, NULL, NULL, FALSE))
  {
    goto disconnect;
  }
  inputEvent = xfc->x11event;
 
  while (!freerdp_shall_disconnect_context(instance->context))
  {
    HANDLE handles[MAXIMUM_WAIT_OBJECTS] = { 0 };
    DWORD nCount = 0;
    handles[nCount++] = timer;
    handles[nCount++] = inputEvent;
 
    /*
     * win8 and server 2k12 seem to have some timing issue/race condition
     * when a initial sync request is send to sync the keyboard indicators
     * sending the sync event twice fixed this problem
     */
    if (freerdp_focus_required(instance))
    {
      xf_keyboard_focus_in(xfc);
      xf_keyboard_focus_in(xfc);
    }
 
    {
      DWORD tmp =
          freerdp_get_event_handles(context, &handles[nCount], ARRAYSIZE(handles) - nCount);
 
      if (tmp == 0)
      {
        WLog_ERR(TAG, "freerdp_get_event_handles failed");
        break;
      }
 
      nCount += tmp;
    }
 
    if (xfc->window)
      xf_floatbar_hide_and_show(xfc->window->floatbar);
 
    waitStatus = WaitForMultipleObjects(nCount, handles, FALSE, INFINITE);
 
    if (waitStatus == WAIT_FAILED)
      break;
 
    {
      if (!freerdp_check_event_handles(context))
      {
        if (client_auto_reconnect_ex(instance, handle_window_events))
          continue;
        else
        {
          /*
           * Indicate an unsuccessful connection attempt if reconnect
           * did not succeed and no other error was specified.
           */
          const UINT32 error = freerdp_get_last_error(instance->context);
 
          if (freerdp_error_info(instance) == 0)
            exit_code = (uint32_t)xf_map_error_to_exit_code(error);
        }
 
        if (freerdp_get_last_error(context) == FREERDP_ERROR_SUCCESS)
          WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
 
        break;
      }
    }
 
    if (!handle_window_events(instance))
      break;
 
    if ((waitStatus != WAIT_TIMEOUT) && (waitStatus == WAIT_OBJECT_0))
    {
      timerEvent.now = GetTickCount64();
      PubSub_OnTimer(context->pubSub, context, &timerEvent);
    }
  }
 
  if (!exit_code)
  {
    exit_code = freerdp_error_info(instance);
 
    if (exit_code == XF_EXIT_DISCONNECT &&
        freerdp_get_disconnect_ultimatum(context) == Disconnect_Ultimatum_user_requested)
    {
      /* This situation might be limited to Windows XP. */
      WLog_INFO(TAG, "Error info says user did not initiate but disconnect ultimatum says "
                     "they did; treat this as a user logoff");
      exit_code = XF_EXIT_LOGOFF;
    }
  }
 
disconnect:
 
  if (timer)
    (void)CloseHandle(timer);
 
  freerdp_disconnect(instance);
end:
  ExitThread(exit_code);
  return exit_code;
}
 
int xf_exit_code_from_disconnect_reason(DWORD reason)
{
  if (reason == 0 ||
      (reason >= XF_EXIT_PARSE_ARGUMENTS && reason <= XF_EXIT_CONNECT_NO_OR_MISSING_CREDENTIALS))
    return WINPR_ASSERTING_INT_CAST(int, reason);
  /* License error set */
  else if (reason >= 0x100 && reason <= 0x10A)
    reason -= 0x100 + XF_EXIT_LICENSE_INTERNAL;
  /* RDP protocol error set */
  else if (reason >= 0x10c9 && reason <= 0x1193)
    reason = XF_EXIT_RDP;
  /* There's no need to test protocol-independent codes: they match */
  else if (!(reason <= 0xC))
    reason = XF_EXIT_UNKNOWN;
 
  return WINPR_ASSERTING_INT_CAST(int, reason);
}
 
static void xf_TerminateEventHandler(void* context, const TerminateEventArgs* e)
{
  rdpContext* ctx = (rdpContext*)context;
  WINPR_UNUSED(e);
  freerdp_abort_connect_context(ctx);
}
 
#ifdef WITH_XRENDER
static void xf_ZoomingChangeEventHandler(void* context, const ZoomingChangeEventArgs* e)
{
  int w = 0;
  int h = 0;
  rdpSettings* settings = NULL;
  xfContext* xfc = (xfContext*)context;
 
  WINPR_ASSERT(xfc);
 
  settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  w = xfc->scaledWidth + e->dx;
  h = xfc->scaledHeight + e->dy;
 
  if (e->dx == 0 && e->dy == 0)
    return;
 
  if (w < 10)
    w = 10;
 
  if (h < 10)
    h = 10;
 
  if (w == xfc->scaledWidth && h == xfc->scaledHeight)
    return;
 
  xfc->scaledWidth = w;
  xfc->scaledHeight = h;
  xf_draw_screen(xfc, 0, 0,
                 WINPR_ASSERTING_INT_CAST(
                     int32_t, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth)),
                 WINPR_ASSERTING_INT_CAST(
                     int32_t, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight)));
}
 
static void xf_PanningChangeEventHandler(void* context, const PanningChangeEventArgs* e)
{
  xfContext* xfc = (xfContext*)context;
  rdpSettings* settings = NULL;
 
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(e);
 
  settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  if (e->dx == 0 && e->dy == 0)
    return;
 
  xfc->offset_x += e->dx;
  xfc->offset_y += e->dy;
  xf_draw_screen(xfc, 0, 0,
                 WINPR_ASSERTING_INT_CAST(
                     int32_t, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth)),
                 WINPR_ASSERTING_INT_CAST(
                     int32_t, freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight)));
}
#endif
 
static BOOL xfreerdp_client_global_init(void)
{
  // NOLINTNEXTLINE(concurrency-mt-unsafe)
  (void)setlocale(LC_ALL, "");
 
  if (freerdp_handle_signals() != 0)
    return FALSE;
 
  return TRUE;
}
 
static void xfreerdp_client_global_uninit(void)
{
}
 
static int xfreerdp_client_start(rdpContext* context)
{
  xfContext* xfc = (xfContext*)context;
  rdpSettings* settings = context->settings;
 
  if (!freerdp_settings_get_string(settings, FreeRDP_ServerHostname))
  {
    WLog_ERR(TAG, "error: server hostname was not specified with /v:<server>[:port]");
    return -1;
  }
 
  if (!(xfc->common.thread = CreateThread(NULL, 0, xf_client_thread, context->instance, 0, NULL)))
  {
    WLog_ERR(TAG, "failed to create client thread");
    return -1;
  }
 
  return 0;
}
 
static Atom get_supported_atom(xfContext* xfc, const char* atomName)
{
  const Atom atom = Logging_XInternAtom(xfc->log, xfc->display, atomName, False);
 
  for (unsigned long i = 0; i < xfc->supportedAtomCount; i++)
  {
    if (xfc->supportedAtoms[i] == atom)
      return atom;
  }
 
  return None;
}
 
void xf_teardown_x11(xfContext* xfc)
{
  WINPR_ASSERT(xfc);
 
  if (xfc->display)
  {
    XCloseDisplay(xfc->display);
    xfc->display = NULL;
  }
 
  if (xfc->x11event)
  {
    (void)CloseHandle(xfc->x11event);
    xfc->x11event = NULL;
  }
 
  if (xfc->mutex)
  {
    (void)CloseHandle(xfc->mutex);
    xfc->mutex = NULL;
  }
 
  if (xfc->vscreen.monitors)
  {
    free(xfc->vscreen.monitors);
    xfc->vscreen.monitors = NULL;
  }
  xfc->vscreen.nmonitors = 0;
 
  free(xfc->supportedAtoms);
  xfc->supportedAtoms = NULL;
  xfc->supportedAtomCount = 0;
}
 
BOOL xf_setup_x11(xfContext* xfc)
{
 
  WINPR_ASSERT(xfc);
  xfc->UseXThreads = TRUE;
 
#if !defined(NDEBUG)
  /* uncomment below if debugging to prevent keyboard grab */
  xfc->debug = TRUE;
#endif
 
  if (xfc->UseXThreads)
  {
    if (!XInitThreads())
    {
      WLog_WARN(TAG, "XInitThreads() failure");
      xfc->UseXThreads = FALSE;
    }
  }
 
  xfc->display = XOpenDisplay(NULL);
 
  if (!xfc->display)
  {
    WLog_ERR(TAG, "failed to open display: %s", XDisplayName(NULL));
    WLog_ERR(TAG, "Please check that the $DISPLAY environment variable is properly set.");
    goto fail;
  }
  if (xfc->debug)
  {
    WLog_INFO(TAG, "Enabling X11 debug mode.");
    XSynchronize(xfc->display, TRUE);
  }
  def_error_handler = XSetErrorHandler(xf_error_handler_ex);
 
  xfc->mutex = CreateMutex(NULL, FALSE, NULL);
 
  if (!xfc->mutex)
  {
    WLog_ERR(TAG, "Could not create mutex!");
    goto fail;
  }
 
  xfc->xfds = ConnectionNumber(xfc->display);
  xfc->screen_number = DefaultScreen(xfc->display);
  xfc->screen = ScreenOfDisplay(xfc->display, xfc->screen_number);
  xfc->big_endian = (ImageByteOrder(xfc->display) == MSBFirst);
  xfc->invert = TRUE;
  xfc->complex_regions = TRUE;
  xfc->NET_SUPPORTED = Logging_XInternAtom(xfc->log, xfc->display, "_NET_SUPPORTED", True);
  xfc->NET_SUPPORTING_WM_CHECK =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_SUPPORTING_WM_CHECK", True);
 
  if ((xfc->NET_SUPPORTED != None) && (xfc->NET_SUPPORTING_WM_CHECK != None))
  {
    Atom actual_type = 0;
    int actual_format = 0;
    unsigned long nitems = 0;
    unsigned long after = 0;
    unsigned char* data = NULL;
    int status = LogTagAndXGetWindowProperty(
        TAG, xfc->display, RootWindowOfScreen(xfc->screen), xfc->NET_SUPPORTED, 0, 1024, False,
        XA_ATOM, &actual_type, &actual_format, &nitems, &after, &data);
 
    if ((status == Success) && (actual_type == XA_ATOM) && (actual_format == 32))
    {
      xfc->supportedAtomCount = nitems;
      xfc->supportedAtoms = calloc(xfc->supportedAtomCount, sizeof(Atom));
      WINPR_ASSERT(xfc->supportedAtoms);
      memcpy(xfc->supportedAtoms, data, nitems * sizeof(Atom));
    }
 
    if (data)
      XFree(data);
  }
 
  xfc->XWAYLAND_MAY_GRAB_KEYBOARD =
      Logging_XInternAtom(xfc->log, xfc->display, "_XWAYLAND_MAY_GRAB_KEYBOARD", False);
  xfc->NET_WM_ICON = Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ICON", False);
  xfc->MOTIF_WM_HINTS = Logging_XInternAtom(xfc->log, xfc->display, "_MOTIF_WM_HINTS", False);
  xfc->NET_NUMBER_OF_DESKTOPS =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_NUMBER_OF_DESKTOPS", False);
  xfc->NET_CURRENT_DESKTOP =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_CURRENT_DESKTOP", False);
  xfc->NET_WORKAREA = Logging_XInternAtom(xfc->log, xfc->display, "_NET_WORKAREA", False);
  xfc->NET_WM_STATE = get_supported_atom(xfc, "_NET_WM_STATE");
  xfc->NET_WM_STATE_MODAL = get_supported_atom(xfc, "_NET_WM_STATE_MODAL");
  xfc->NET_WM_STATE_STICKY = get_supported_atom(xfc, "_NET_WM_STATE_STICKY");
  xfc->NET_WM_STATE_MAXIMIZED_HORZ =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
  xfc->NET_WM_STATE_MAXIMIZED_VERT =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
  xfc->NET_WM_STATE_SHADED = get_supported_atom(xfc, "_NET_WM_STATE_SHADED");
  xfc->NET_WM_STATE_SKIP_TASKBAR = get_supported_atom(xfc, "_NET_WM_STATE_SKIP_TASKBAR");
  xfc->NET_WM_STATE_SKIP_PAGER = get_supported_atom(xfc, "_NET_WM_STATE_SKIP_PAGER");
  xfc->NET_WM_STATE_HIDDEN = get_supported_atom(xfc, "_NET_WM_STATE_HIDDEN");
  xfc->NET_WM_STATE_FULLSCREEN = get_supported_atom(xfc, "_NET_WM_STATE_FULLSCREEN");
  xfc->NET_WM_STATE_ABOVE = get_supported_atom(xfc, "_NET_WM_STATE_ABOVE");
  xfc->NET_WM_STATE_BELOW = get_supported_atom(xfc, "_NET_WM_STATE_BELOW");
  xfc->NET_WM_STATE_DEMANDS_ATTENTION =
      get_supported_atom(xfc, "_NET_WM_STATE_DEMANDS_ATTENTION");
  xfc->NET_WM_FULLSCREEN_MONITORS = get_supported_atom(xfc, "_NET_WM_FULLSCREEN_MONITORS");
  xfc->NET_WM_NAME = Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_NAME", False);
  xfc->NET_WM_PID = Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_PID", False);
  xfc->NET_WM_WINDOW_TYPE =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE", False);
  xfc->NET_WM_WINDOW_TYPE_NORMAL =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE_NORMAL", False);
  xfc->NET_WM_WINDOW_TYPE_DIALOG =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE_DIALOG", False);
  xfc->NET_WM_WINDOW_TYPE_POPUP =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE_POPUP", False);
  xfc->NET_WM_WINDOW_TYPE_POPUP_MENU =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE_POPUP_MENU", False);
  xfc->NET_WM_WINDOW_TYPE_UTILITY =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE_UTILITY", False);
  xfc->NET_WM_WINDOW_TYPE_DROPDOWN_MENU =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU", False);
  xfc->NET_WM_STATE_SKIP_TASKBAR =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_STATE_SKIP_TASKBAR", False);
  xfc->NET_WM_STATE_SKIP_PAGER =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_STATE_SKIP_PAGER", False);
  xfc->NET_WM_MOVERESIZE =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_MOVERESIZE", False);
  xfc->NET_MOVERESIZE_WINDOW =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_MOVERESIZE_WINDOW", False);
  xfc->UTF8_STRING = Logging_XInternAtom(xfc->log, xfc->display, "UTF8_STRING", FALSE);
  xfc->WM_PROTOCOLS = Logging_XInternAtom(xfc->log, xfc->display, "WM_PROTOCOLS", False);
  xfc->WM_DELETE_WINDOW = Logging_XInternAtom(xfc->log, xfc->display, "WM_DELETE_WINDOW", False);
  xfc->WM_STATE = Logging_XInternAtom(xfc->log, xfc->display, "WM_STATE", False);
  xfc->x11event = CreateFileDescriptorEvent(NULL, FALSE, FALSE, xfc->xfds, WINPR_FD_READ);
 
  xfc->NET_WM_ALLOWED_ACTIONS =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ALLOWED_ACTIONS", False);
 
  xfc->NET_WM_ACTION_CLOSE =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_CLOSE", False);
  xfc->NET_WM_ACTION_MINIMIZE =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_MINIMIZE", False);
  xfc->NET_WM_ACTION_MOVE =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_MOVE", False);
  xfc->NET_WM_ACTION_RESIZE =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_RESIZE", False);
  xfc->NET_WM_ACTION_MAXIMIZE_HORZ =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_MAXIMIZE_HORZ", False);
  xfc->NET_WM_ACTION_MAXIMIZE_VERT =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_MAXIMIZE_VERT", False);
  xfc->NET_WM_ACTION_FULLSCREEN =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_FULLSCREEN", False);
  xfc->NET_WM_ACTION_CHANGE_DESKTOP =
      Logging_XInternAtom(xfc->log, xfc->display, "_NET_WM_ACTION_CHANGE_DESKTOP", False);
 
  if (!xfc->x11event)
  {
    WLog_ERR(TAG, "Could not create xfds event");
    goto fail;
  }
 
  xf_check_extensions(xfc);
 
  xfc->vscreen.monitors = calloc(16, sizeof(MONITOR_INFO));
 
  if (!xfc->vscreen.monitors)
    goto fail;
  return TRUE;
 
fail:
  xf_teardown_x11(xfc);
  return FALSE;
}
 
static BOOL xfreerdp_client_new(freerdp* instance, rdpContext* context)
{
  xfContext* xfc = (xfContext*)instance->context;
  WINPR_ASSERT(context);
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(!xfc->display);
  WINPR_ASSERT(!xfc->mutex);
  WINPR_ASSERT(!xfc->x11event);
  instance->PreConnect = xf_pre_connect;
  instance->PostConnect = xf_post_connect;
  instance->PostDisconnect = xf_post_disconnect;
  instance->PostFinalDisconnect = xf_post_final_disconnect;
  instance->LogonErrorInfo = xf_logon_error_info;
  instance->GetAccessToken = client_cli_get_access_token;
  PubSub_SubscribeTerminate(context->pubSub, xf_TerminateEventHandler);
#ifdef WITH_XRENDER
  PubSub_SubscribeZoomingChange(context->pubSub, xf_ZoomingChangeEventHandler);
  PubSub_SubscribePanningChange(context->pubSub, xf_PanningChangeEventHandler);
#endif
  xfc->log = WLog_Get(TAG);
 
  return TRUE;
}
 
static void xfreerdp_client_free(WINPR_ATTR_UNUSED freerdp* instance, rdpContext* context)
{
  if (!context)
    return;
 
  if (context->pubSub)
  {
    PubSub_UnsubscribeTerminate(context->pubSub, xf_TerminateEventHandler);
#ifdef WITH_XRENDER
    PubSub_UnsubscribeZoomingChange(context->pubSub, xf_ZoomingChangeEventHandler);
    PubSub_UnsubscribePanningChange(context->pubSub, xf_PanningChangeEventHandler);
#endif
  }
}
 
int RdpClientEntry(RDP_CLIENT_ENTRY_POINTS* pEntryPoints)
{
  pEntryPoints->Version = 1;
  pEntryPoints->Size = sizeof(RDP_CLIENT_ENTRY_POINTS_V1);
  pEntryPoints->GlobalInit = xfreerdp_client_global_init;
  pEntryPoints->GlobalUninit = xfreerdp_client_global_uninit;
  pEntryPoints->ContextSize = sizeof(xfContext);
  pEntryPoints->ClientNew = xfreerdp_client_new;
  pEntryPoints->ClientFree = xfreerdp_client_free;
  pEntryPoints->ClientStart = xfreerdp_client_start;
  pEntryPoints->ClientStop = freerdp_client_common_stop;
  return 0;
}