Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/libfreerdp/cache/cache.c

@@ -0,0 +1,153 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * RDP Caches
+ *
+ * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.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.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/crt.h>
+
+#include <winpr/stream.h>
+
+#include "cache.h"
+
+rdpCache* cache_new(rdpContext* context)
+{
+	rdpCache* cache = nullptr;
+
+	WINPR_ASSERT(context);
+
+	cache = (rdpCache*)calloc(1, sizeof(rdpCache));
+
+	if (!cache)
+		return nullptr;
+
+	cache->glyph = glyph_cache_new(context);
+
+	if (!cache->glyph)
+		goto error;
+
+	cache->brush = brush_cache_new(context);
+
+	if (!cache->brush)
+		goto error;
+
+	cache->pointer = pointer_cache_new(context);
+
+	if (!cache->pointer)
+		goto error;
+
+	cache->bitmap = bitmap_cache_new(context);
+
+	if (!cache->bitmap)
+		goto error;
+
+	cache->offscreen = offscreen_cache_new(context);
+
+	if (!cache->offscreen)
+		goto error;
+
+	cache->palette = palette_cache_new(context);
+
+	if (!cache->palette)
+		goto error;
+
+	cache->nine_grid = nine_grid_cache_new(context);
+
+	if (!cache->nine_grid)
+		goto error;
+
+	return cache;
+error:
+	WINPR_PRAGMA_DIAG_PUSH
+	WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
+	cache_free(cache);
+	WINPR_PRAGMA_DIAG_POP
+	return nullptr;
+}
+
+void cache_free(rdpCache* cache)
+{
+	if (cache != nullptr)
+	{
+		glyph_cache_free(cache->glyph);
+		brush_cache_free(cache->brush);
+		pointer_cache_free(cache->pointer);
+		bitmap_cache_free(cache->bitmap);
+		offscreen_cache_free(cache->offscreen);
+		palette_cache_free(cache->palette);
+		nine_grid_cache_free(cache->nine_grid);
+		free(cache);
+	}
+}
+
+CACHE_COLOR_TABLE_ORDER* copy_cache_color_table_order(rdpContext* context,
+                                                      const CACHE_COLOR_TABLE_ORDER* order)
+{
+	CACHE_COLOR_TABLE_ORDER* dst = calloc(1, sizeof(CACHE_COLOR_TABLE_ORDER));
+
+	if (!dst || !order)
+		goto fail;
+
+	*dst = *order;
+	return dst;
+fail:
+	WINPR_PRAGMA_DIAG_PUSH
+	WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
+	free_cache_color_table_order(context, dst);
+	WINPR_PRAGMA_DIAG_POP
+	return nullptr;
+}
+
+void free_cache_color_table_order(WINPR_ATTR_UNUSED rdpContext* context,
+                                  CACHE_COLOR_TABLE_ORDER* order)
+{
+	free(order);
+}
+
+SURFACE_BITS_COMMAND* copy_surface_bits_command(rdpContext* context,
+                                                const SURFACE_BITS_COMMAND* order)
+{
+	SURFACE_BITS_COMMAND* dst = calloc(1, sizeof(SURFACE_BITS_COMMAND));
+	if (!dst || !order)
+		goto fail;
+
+	*dst = *order;
+
+	dst->bmp.bitmapData = (BYTE*)malloc(order->bmp.bitmapDataLength);
+
+	if (!dst->bmp.bitmapData)
+		goto fail;
+
+	CopyMemory(dst->bmp.bitmapData, order->bmp.bitmapData, order->bmp.bitmapDataLength);
+
+	return dst;
+
+fail:
+	WINPR_PRAGMA_DIAG_PUSH
+	WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
+	free_surface_bits_command(context, dst);
+	WINPR_PRAGMA_DIAG_POP
+	return nullptr;
+}
+
+void free_surface_bits_command(WINPR_ATTR_UNUSED rdpContext* context, SURFACE_BITS_COMMAND* order)
+{
+	if (order)
+		free(order->bmp.bitmapData);
+	free(order);
+}