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Fix some warnings by adding error checking to Sample_TempObstacles::loadAll (#245)

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Ben Hymers 2017-01-12 11:53:39 +00:00 committed by Jakob Botsch Nielsen
parent b40b5ab7d9
commit f8c8beb3cb
1 changed files with 27 additions and 4 deletions
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31
RecastDemo/Source/Sample_TempObstacles.cpp
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@ -1448,7 +1448,13 @@ void Sample_TempObstacles::loadAll(const char* path)
// Read header.
TileCacheSetHeader header;
fread(&header, sizeof(TileCacheSetHeader), 1, fp);
size_t headerReadReturnCode = fread(&header, sizeof(TileCacheSetHeader), 1, fp);
if( headerReadReturnCode != 1)
{
// Error or early EOF
fclose(fp);
return;
}
if (header.magic != TILECACHESET_MAGIC)
{
fclose(fp);
@ -1490,17 +1496,34 @@ void Sample_TempObstacles::loadAll(const char* path)
for (int i = 0; i < header.numTiles; ++i)
{
TileCacheTileHeader tileHeader;
fread(&tileHeader, sizeof(tileHeader), 1, fp);
size_t tileHeaderReadReturnCode = fread(&tileHeader, sizeof(tileHeader), 1, fp);
if( tileHeaderReadReturnCode != 1)
{
// Error or early EOF
fclose(fp);
return;
}
if (!tileHeader.tileRef || !tileHeader.dataSize)
break;
unsigned char* data = (unsigned char*)dtAlloc(tileHeader.dataSize, DT_ALLOC_PERM);
if (!data) break;
memset(data, 0, tileHeader.dataSize);
fread(data, tileHeader.dataSize, 1, fp);
size_t tileDataReadReturnCode = fread(data, tileHeader.dataSize, 1, fp);
if( tileDataReadReturnCode != 1)
{
// Error or early EOF
dtFree(data);
fclose(fp);
return;
}
dtCompressedTileRef tile = 0;
m_tileCache->addTile(data, tileHeader.dataSize, DT_COMPRESSEDTILE_FREE_DATA, &tile);
dtStatus addTileStatus = m_tileCache->addTile(data, tileHeader.dataSize, DT_COMPRESSEDTILE_FREE_DATA, &tile);
if (dtStatusFailed(addTileStatus))
{
dtFree(data);
}
if (tile)
m_tileCache->buildNavMeshTile(tile, m_navMesh);