wfreerdp-server: start integration of DFMirage driving code

server/Windows/wf_mirage.c

@@ -17,8 +17,195 @@
  * limitations under the License.
  */
 
+#include <winpr/tchar.h>
 #include <winpr/windows.h>
 
 #include "wf_mirage.h"
 
+int wf_mirage_step1(wfPeerContext* context)
+{
+	BOOL result;
+	DWORD deviceNumber;
+	DISPLAY_DEVICE deviceInfo;
 
+	deviceNumber = 0;
+	deviceInfo.cb = sizeof(deviceInfo);
+
+	printf("Detecting display devices:\n");
+
+	while (result = EnumDisplayDevices(NULL, deviceNumber, &deviceInfo, 0))
+	{
+		_tprintf(_T("\t%s\n"), deviceInfo.DeviceString);
+
+		if (_tcscmp(deviceInfo.DeviceString, _T("Mirage Driver")) == 0)
+		{
+			_tprintf(_T("\n\nFound our target of interest!\n"));
+			_tprintf(_T("Key: %s\n"), deviceInfo.DeviceKey);
+			_tprintf(_T("Name: %s\n"), deviceInfo.DeviceName);
+			_tprintf(_T("ID: %s\n"), deviceInfo.DeviceID);
+
+			_tcsncpy_s(context->deviceName, 32, deviceInfo.DeviceName, _tcslen(deviceInfo.DeviceName));
+		}
+
+		deviceNumber++;
+	}
+
+	return 0;
+}
+
+int wf_mirage_step2(wfPeerContext* context)
+{
+	LONG status;
+	DWORD rtype, rdata, rdata_size;
+	TCHAR reg_full[] = _T("System\\CurrentControlSet\\Control\\Video\\{0752CE80-4CE2-46BB-9EAE-5C2A03BF4CEC}\\0000");
+
+	_tprintf(_T("\nOpening registry key %s\n"), reg_full);
+
+	rtype = 0;
+	rdata = 0;
+	rdata_size = sizeof(rdata);
+
+	status = RegGetValue(HKEY_LOCAL_MACHINE, reg_full,
+		_T("Attach.ToDesktop"), RRF_RT_REG_DWORD, &rtype, &rdata, &rdata_size);
+
+	if (status != ERROR_SUCCESS)
+	{
+		printf("Failed to read registry value.\n");
+		printf("operation returned %d\n", status);
+		return -1;
+	}
+
+	_tprintf(_T("type = %04X, data = %04X\n\nNow let's try attaching it...\n"), rtype, rdata);
+
+	if (rdata == 0)
+	{
+		rdata = 1;
+
+		status = RegSetKeyValue(HKEY_LOCAL_MACHINE, reg_full,
+			_T("Attach.ToDesktop"), REG_DWORD, &rdata, rdata_size);
+
+		if (status != ERROR_SUCCESS)
+		{
+			_tprintf(_T("Failed to read registry value.\n"));
+			_tprintf(_T("operation returned %d\n"), status);
+			return -1;
+		}
+
+		_tprintf(_T("Attached to Desktop\n\n"));
+	}
+	else if (rdata == 1)
+	{
+		_tprintf(_T("Already attached to desktop!\n"));
+	}
+	else
+	{
+		_tprintf(_T("Something went wrong with attaching to desktop...\nrdata=%d\n"), rdata);
+		return -1;
+	}
+
+	return 0;
+}
+
+int wf_mirage_step3(wfPeerContext* context)
+{
+	LONG status;
+	DWORD* extHdr;
+	WORD drvExtraSaved;
+	DEVMODE* deviceMode;
+	DWORD dmf_devmodewext_magic_sig = 0xDF20C0DE;
+
+	deviceMode = (DEVMODE*) malloc(sizeof(DEVMODE) + EXT_DEVMODE_SIZE_MAX);
+	deviceMode->dmDriverExtra = 2 * sizeof(DWORD);
+
+	extHdr = (DWORD*)((BYTE*) &deviceMode + sizeof(DEVMODE)); 
+	extHdr[0] = dmf_devmodewext_magic_sig;
+	extHdr[1] = 0;
+
+	drvExtraSaved = deviceMode->dmDriverExtra;
+	memset(deviceMode, 0, sizeof(DEVMODE) + EXT_DEVMODE_SIZE_MAX);
+	deviceMode->dmSize = sizeof(DEVMODE);
+	deviceMode->dmDriverExtra = drvExtraSaved;
+
+	deviceMode->dmPelsWidth = 640;
+	deviceMode->dmPelsHeight = 480;
+	deviceMode->dmBitsPerPel = 32;
+	deviceMode->dmPosition.x = 0;
+	deviceMode->dmPosition.y = 0;
+
+	deviceMode->dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_POSITION;
+
+	_tcsncpy_s(deviceMode->dmDeviceName, 32, context->deviceName, _tcslen(context->deviceName));
+
+	status = ChangeDisplaySettingsEx(context->deviceName, deviceMode, NULL, CDS_UPDATEREGISTRY, NULL);
+
+	switch (status)
+	{
+		case DISP_CHANGE_SUCCESSFUL:
+			printf("ChangeDisplaySettingsEx() was successfull\n");
+			break;
+
+		case DISP_CHANGE_BADDUALVIEW:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_BADDUALVIEW, code %d\n", status);
+			return -1;
+			break;
+
+		case DISP_CHANGE_BADFLAGS:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_BADFLAGS, code %d\n", status);
+			return -1;
+			break;
+
+		case DISP_CHANGE_BADMODE:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_BADMODE, code %d\n", status);
+			return -1;
+			break;
+
+		case DISP_CHANGE_BADPARAM:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_BADPARAM, code %d\n", status);
+			return -1;
+			break;
+
+		case DISP_CHANGE_FAILED:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_FAILED, code %d\n", status);
+			return -1;
+			break;
+
+		case DISP_CHANGE_NOTUPDATED:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_NOTUPDATED, code %d\n", status);
+			return -1;
+			break;
+
+		case DISP_CHANGE_RESTART:
+			printf("ChangeDisplaySettingsEx() failed with  DISP_CHANGE_RESTART, code %d\n", status);
+			return -1;
+			break;
+	}
+
+	return 0;
+}
+
+int wf_mirage_step4(wfPeerContext* context)
+{
+	int status;
+
+	printf("\n\nCreating a device context...\n");
+
+	context->driverDC = CreateDC(context->deviceName, NULL, NULL, NULL);
+
+	if (context->driverDC == NULL)
+	{
+		printf("Could not create device driver context!\n");
+		return -1;
+	}
+
+	context->changeBuffer = malloc(sizeof(GETCHANGESBUF));
+
+	printf("\n\nConnecting to driver...\n");
+	status = ExtEscape(context->driverDC, dmf_esc_usm_pipe_map, 0, 0, sizeof(GETCHANGESBUF), (LPSTR) context->changeBuffer);
+
+	if (status <= 0)
+	{
+		printf("Failed to map shared memory from the driver! Code %d\n", status);
+	}
+
+	return 0;
+}

server/Windows/wf_mirage.h

@@ -109,6 +109,7 @@ typedef struct
 	CHANGES_RECORD pointrect[MAXCHANGES_BUF];
 } CHANGES_BUF;
 
+#define EXT_DEVMODE_SIZE_MAX			3072
 #define	DMF_PIPE_SEC_SIZE_DEFAULT		ALIGN64K(sizeof(CHANGES_BUF))
 
 typedef struct
@@ -199,4 +200,9 @@ typedef struct
 	ULONG nColorBmPalEntries;
 } Esc_dmf_pointer_shape_get_OUT;
 
+int wf_mirage_step1(wfPeerContext* context);
+int wf_mirage_step2(wfPeerContext* context);
+int wf_mirage_step3(wfPeerContext* context);
+int wf_mirage_step4(wfPeerContext* context);
+
 #endif /* WF_MIRAGE_H */

server/Windows/wf_peer.c

@@ -25,7 +25,10 @@
 
 void wf_peer_context_new(freerdp_peer* client, wfPeerContext* context)
 {
-
+	wf_mirage_step1(context);
+	wf_mirage_step2(context);
+	wf_mirage_step3(context);
+	wf_mirage_step4(context);
 }
 
 void wf_peer_context_free(freerdp_peer* client, wfPeerContext* context)

server/Windows/wfreerdp.h

@@ -25,7 +25,11 @@
 struct wf_peer_context
 {
 	rdpContext _p;
+
+	HDC driverDC;
 	boolean activated;
+	void* changeBuffer;
+	TCHAR deviceName[32];
 };
 typedef struct wf_peer_context wfPeerContext;