Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/uwac/libuwac/uwac-tools.c

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+/*
+ * Copyright © 2015 David FORT <contact@hardening-consulting.com>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <wayland-util.h>
+#include <string.h>
+#include <uwac/uwac-tools.h>
+#include <winpr/wtypes.h>
+
+struct uwac_touch_automata
+{
+	struct wl_array tp;
+};
+
+void UwacTouchAutomataInit(UwacTouchAutomata* automata)
+{
+	wl_array_init(&automata->tp);
+}
+
+void UwacTouchAutomataReset(UwacTouchAutomata* automata)
+{
+	automata->tp.size = 0;
+}
+
+bool UwacTouchAutomataInjectEvent(UwacTouchAutomata* automata, UwacEvent* event)
+{
+
+	UwacTouchPoint* tp = nullptr;
+
+	switch (event->type)
+	{
+		case UWAC_EVENT_TOUCH_FRAME_BEGIN:
+			break;
+
+		case UWAC_EVENT_TOUCH_UP:
+		{
+			UwacTouchUp* touchUp = &event->touchUp;
+			size_t toMove = automata->tp.size - sizeof(UwacTouchPoint);
+
+			wl_array_for_each(tp, &automata->tp)
+			{
+				if ((int64_t)tp->id == touchUp->id)
+				{
+					if (toMove)
+						memmove(tp, tp + 1, toMove);
+					return true;
+				}
+
+				toMove -= sizeof(UwacTouchPoint);
+			}
+			break;
+		}
+
+		case UWAC_EVENT_TOUCH_DOWN:
+		{
+			UwacTouchDown* touchDown = &event->touchDown;
+
+			wl_array_for_each(tp, &automata->tp)
+			{
+				if ((int64_t)tp->id == touchDown->id)
+				{
+					tp->x = touchDown->x;
+					tp->y = touchDown->y;
+					return true;
+				}
+			}
+
+			tp = wl_array_add(&automata->tp, sizeof(UwacTouchPoint));
+			if (!tp)
+				return false;
+
+			if (touchDown->id < 0)
+				return false;
+
+			tp->id = (uint32_t)touchDown->id;
+			tp->x = touchDown->x;
+			tp->y = touchDown->y;
+			break;
+		}
+
+		case UWAC_EVENT_TOUCH_FRAME_END:
+			break;
+
+		default:
+			break;
+	}
+
+	return true;
+}