Milestone 5: deliver embedded RDP sessions and lifecycle hardening
This commit is contained in:
Keith Smith
322
third_party/FreeRDP/libfreerdp/cache/brush.c
vendored
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322
third_party/FreeRDP/libfreerdp/cache/brush.c
vendored
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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Brush Cache
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <freerdp/config.h>
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#include <stdio.h>
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#include <winpr/crt.h>
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#include <winpr/assert.h>
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#include <freerdp/log.h>
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#include <freerdp/update.h>
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#include <freerdp/freerdp.h>
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#include <winpr/stream.h>
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#include "brush.h"
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#include "cache.h"
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#define TAG FREERDP_TAG("cache.brush")
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typedef struct
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{
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UINT32 bpp;
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void* entry;
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} BRUSH_ENTRY;
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struct rdp_brush_cache
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{
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pPatBlt PatBlt; /* 0 */
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pCacheBrush CacheBrush; /* 1 */
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pPolygonSC PolygonSC; /* 2 */
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pPolygonCB PolygonCB; /* 3 */
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UINT32 paddingA[16 - 4]; /* 4 */
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UINT32 maxEntries; /* 16 */
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UINT32 maxMonoEntries; /* 17 */
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BRUSH_ENTRY* entries; /* 18 */
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BRUSH_ENTRY* monoEntries; /* 19 */
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UINT32 paddingB[32 - 20]; /* 20 */
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rdpContext* context;
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};
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static BOOL update_gdi_patblt(rdpContext* context, PATBLT_ORDER* patblt)
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{
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BOOL ret = TRUE;
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WINPR_ASSERT(context);
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WINPR_ASSERT(patblt);
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const rdpCache* cache = context->cache;
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WINPR_ASSERT(cache);
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rdpBrush* brush = &patblt->brush;
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WINPR_ASSERT(brush->style <= UINT8_MAX);
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const BYTE style = (BYTE)brush->style;
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if (brush->style & CACHED_BRUSH)
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{
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brush->data = brush_cache_get(cache->brush, brush->index, &brush->bpp);
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brush->style = 0x03;
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}
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WINPR_ASSERT(cache->brush);
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IFCALLRET(cache->brush->PatBlt, ret, context, patblt);
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brush->style = style;
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return ret;
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}
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static BOOL update_gdi_polygon_sc(rdpContext* context, const POLYGON_SC_ORDER* polygon_sc)
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{
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rdpCache* cache = nullptr;
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WINPR_ASSERT(context);
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cache = context->cache;
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WINPR_ASSERT(cache);
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WINPR_ASSERT(cache->brush);
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return IFCALLRESULT(TRUE, cache->brush->PolygonSC, context, polygon_sc);
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}
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static BOOL update_gdi_polygon_cb(rdpContext* context, POLYGON_CB_ORDER* polygon_cb)
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{
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BOOL ret = TRUE;
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WINPR_ASSERT(context);
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WINPR_ASSERT(polygon_cb);
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rdpCache* cache = context->cache;
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WINPR_ASSERT(cache);
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rdpBrush* brush = &polygon_cb->brush;
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WINPR_ASSERT(brush->style <= UINT8_MAX);
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const BYTE style = (UINT8)brush->style;
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if (brush->style & CACHED_BRUSH)
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{
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brush->data = brush_cache_get(cache->brush, brush->index, &brush->bpp);
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brush->style = 0x03;
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}
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WINPR_ASSERT(cache->brush);
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IFCALLRET(cache->brush->PolygonCB, ret, context, polygon_cb);
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brush->style = style;
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return ret;
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}
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static BOOL update_gdi_cache_brush(rdpContext* context, const CACHE_BRUSH_ORDER* cacheBrush)
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{
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UINT32 length = 0;
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void* data = nullptr;
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rdpCache* cache = nullptr;
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WINPR_ASSERT(context);
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WINPR_ASSERT(cacheBrush);
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cache = context->cache;
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WINPR_ASSERT(cache);
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length = cacheBrush->bpp * 64 / 8;
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data = malloc(length);
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if (!data)
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return FALSE;
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CopyMemory(data, cacheBrush->data, length);
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brush_cache_put(cache->brush, cacheBrush->index, data, cacheBrush->bpp);
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return TRUE;
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}
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void* brush_cache_get(rdpBrushCache* brushCache, UINT32 index, UINT32* bpp)
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{
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void* entry = nullptr;
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if (!brushCache)
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return nullptr;
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if (!bpp)
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return nullptr;
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if (*bpp == 1)
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{
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if (index >= brushCache->maxMonoEntries)
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{
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WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", *bpp, index);
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return nullptr;
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}
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*bpp = brushCache->monoEntries[index].bpp;
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entry = brushCache->monoEntries[index].entry;
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}
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else
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{
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if (index >= brushCache->maxEntries)
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{
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WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", *bpp, index);
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return nullptr;
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}
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*bpp = brushCache->entries[index].bpp;
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entry = brushCache->entries[index].entry;
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}
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if (entry == nullptr)
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{
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WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) at index: 0x%08" PRIX32 "", *bpp, index);
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return nullptr;
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}
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return entry;
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}
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void brush_cache_put(rdpBrushCache* brushCache, UINT32 index, void* entry, UINT32 bpp)
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{
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WINPR_ASSERT(brushCache);
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if (bpp == 1)
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{
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if (index >= brushCache->maxMonoEntries)
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{
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WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", bpp, index);
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free(entry);
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return;
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}
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WINPR_ASSERT(brushCache->monoEntries);
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free(brushCache->monoEntries[index].entry);
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brushCache->monoEntries[index].bpp = bpp;
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brushCache->monoEntries[index].entry = entry;
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}
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else
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{
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if (index >= brushCache->maxEntries)
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{
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WLog_ERR(TAG, "invalid brush (%" PRIu32 " bpp) index: 0x%08" PRIX32 "", bpp, index);
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free(entry);
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return;
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}
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WINPR_ASSERT(brushCache->entries);
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free(brushCache->entries[index].entry);
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brushCache->entries[index].bpp = bpp;
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brushCache->entries[index].entry = entry;
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}
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}
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void brush_cache_register_callbacks(rdpUpdate* update)
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{
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WINPR_ASSERT(update);
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WINPR_ASSERT(update->context);
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WINPR_ASSERT(update->primary);
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WINPR_ASSERT(update->secondary);
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if (!freerdp_settings_get_bool(update->context->settings, FreeRDP_DeactivateClientDecoding))
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{
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rdpCache* cache = update->context->cache;
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WINPR_ASSERT(cache);
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WINPR_ASSERT(cache->brush);
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cache->brush->PatBlt = update->primary->PatBlt;
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cache->brush->PolygonSC = update->primary->PolygonSC;
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cache->brush->PolygonCB = update->primary->PolygonCB;
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update->primary->PatBlt = update_gdi_patblt;
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update->primary->PolygonSC = update_gdi_polygon_sc;
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update->primary->PolygonCB = update_gdi_polygon_cb;
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update->secondary->CacheBrush = update_gdi_cache_brush;
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}
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}
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rdpBrushCache* brush_cache_new(rdpContext* context)
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{
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rdpBrushCache* brushCache = nullptr;
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WINPR_ASSERT(context);
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brushCache = (rdpBrushCache*)calloc(1, sizeof(rdpBrushCache));
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if (!brushCache)
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return nullptr;
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brushCache->context = context;
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brushCache->maxEntries = 64;
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brushCache->maxMonoEntries = 64;
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brushCache->entries = (BRUSH_ENTRY*)calloc(brushCache->maxEntries, sizeof(BRUSH_ENTRY));
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if (!brushCache->entries)
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goto fail;
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brushCache->monoEntries = (BRUSH_ENTRY*)calloc(brushCache->maxMonoEntries, sizeof(BRUSH_ENTRY));
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if (!brushCache->monoEntries)
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goto fail;
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return brushCache;
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fail:
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WINPR_PRAGMA_DIAG_PUSH
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WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
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brush_cache_free(brushCache);
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WINPR_PRAGMA_DIAG_POP
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return nullptr;
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}
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void brush_cache_free(rdpBrushCache* brushCache)
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{
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if (brushCache)
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{
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if (brushCache->entries)
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{
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for (size_t i = 0; i < brushCache->maxEntries; i++)
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free(brushCache->entries[i].entry);
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free(brushCache->entries);
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}
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if (brushCache->monoEntries)
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{
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for (size_t i = 0; i < brushCache->maxMonoEntries; i++)
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free(brushCache->monoEntries[i].entry);
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free(brushCache->monoEntries);
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}
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free(brushCache);
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}
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}
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void free_cache_brush_order(rdpContext* context, CACHE_BRUSH_ORDER* order)
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{
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WINPR_UNUSED(context);
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free(order);
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}
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CACHE_BRUSH_ORDER* copy_cache_brush_order(rdpContext* context, const CACHE_BRUSH_ORDER* order)
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{
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CACHE_BRUSH_ORDER* dst = nullptr;
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WINPR_ASSERT(context);
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dst = calloc(1, sizeof(CACHE_BRUSH_ORDER));
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if (!dst || !order)
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goto fail;
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*dst = *order;
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return dst;
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fail:
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free_cache_brush_order(context, dst);
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return nullptr;
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}
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