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Update dZoneManager/Raw.cpp

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Aaron Kimbrell
2026-03-31 04:45:15 -05:00
committed by GitHub
parent fbac3241ec
commit d51ad3e769
1 changed files with 32 additions and 2 deletions
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34
dZoneManager/Raw.cpp
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@@ -93,10 +93,40 @@ namespace Raw {
} }
// Read heightmap // Read heightmap
uint32_t heightMapSize = chunk.width * chunk.height; const size_t width = static_cast<size_t>(chunk.width);
const size_t height = static_cast<size_t>(chunk.height);
if (width == 0 || height == 0) {
LOG("Chunk %u has invalid heightmap dimensions: width=%zu, height=%zu", chunk.id, width, height);
return false;
}
if (width > kMaxResolution || height > kMaxResolution) {
LOG("Chunk %u heightmap dimensions exceed maximum resolution %u: width=%zu, height=%zu", chunk.id, kMaxResolution, width, height);
return false;
}
if (height != 0 && width > std::numeric_limits<size_t>::max() / height) {
LOG("Chunk %u heightmap size multiplication overflows: width=%zu, height=%zu", chunk.id, width, height);
return false;
}
const size_t heightMapSize = width * height;
const size_t elementSize = sizeof(chunk.heightMap[0]);
if (elementSize != 0 && heightMapSize > std::numeric_limits<size_t>::max() / elementSize) {
LOG("Chunk %u heightmap byte size overflows: elements=%zu, elementSize=%zu", chunk.id, heightMapSize, elementSize);
return false;
}
const size_t totalBytes = heightMapSize * elementSize;
if (totalBytes == 0 || totalBytes > kMaxBlobBytes) {
LOG("Chunk %u heightmap total size invalid: bytes=%zu (max %zu)", chunk.id, totalBytes, kMaxBlobBytes);
return false;
}
chunk.heightMap.resize(heightMapSize); chunk.heightMap.resize(heightMapSize);
for (uint32_t i = 0; i < heightMapSize; ++i) { for (size_t i = 0; i < heightMapSize; ++i) {
BinaryIO::BinaryRead(stream, chunk.heightMap[i]); BinaryIO::BinaryRead(stream, chunk.heightMap[i]);
} }