Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/include/freerdp/client/geometry.h

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+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Geometry tracking Virtual Channel Extension
+ *
+ * Copyright 2017 David Fort <contact@hardening-consulting.com>
+ *
+ * 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.
+ */
+
+#ifndef FREERDP_CHANNELS_CLIENT_GEOMETRY_H
+#define FREERDP_CHANNELS_CLIENT_GEOMETRY_H
+
+#include <winpr/collections.h>
+#include <freerdp/api.h>
+#include <freerdp/channels/geometry.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+	/**
+	 * Client Interface
+	 */
+	typedef struct s_geometry_client_context GeometryClientContext;
+
+	typedef struct S_MAPPED_GEOMETRY MAPPED_GEOMETRY;
+	typedef BOOL (*pcMappedGeometryAdded)(GeometryClientContext* context,
+	                                      MAPPED_GEOMETRY* geometry);
+	typedef BOOL (*pcMappedGeometryUpdate)(MAPPED_GEOMETRY* geometry);
+	typedef BOOL (*pcMappedGeometryClear)(MAPPED_GEOMETRY* geometry);
+
+	/** @brief a geometry record tracked by the geometry channel */
+	struct S_MAPPED_GEOMETRY
+	{
+		volatile LONG refCounter;
+		UINT64 mappingId;
+		UINT64 topLevelId;
+		INT32 left, top, right, bottom;
+		INT32 topLevelLeft, topLevelTop, topLevelRight, topLevelBottom;
+		FREERDP_RGNDATA geometry;
+
+		void* custom;
+		WINPR_ATTR_NODISCARD pcMappedGeometryUpdate MappedGeometryUpdate;
+		WINPR_ATTR_NODISCARD pcMappedGeometryClear MappedGeometryClear;
+	};
+
+	/** @brief the geometry context for client channel */
+	struct s_geometry_client_context
+	{
+		wHashTable* geometries;
+		void* handle;
+		void* custom;
+
+		WINPR_ATTR_NODISCARD pcMappedGeometryAdded MappedGeometryAdded;
+		UINT32 remoteVersion;
+	};
+
+	FREERDP_API void mappedGeometryRef(MAPPED_GEOMETRY* g);
+	FREERDP_API void mappedGeometryUnref(MAPPED_GEOMETRY* g);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* FREERDP_CHANNELS_CLIENT_GEOMETRY_H */