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Fix possible out of bound access.

kimkulling/fix_static_code_analysis_findings
Kim Kulling 2024-01-31 09:17:49 +01:00 committed by GitHub
parent a0e0556815
commit 5d069d99cc
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GPG Key ID: B5690EEEBB952194
1 changed files with 13 additions and 22 deletions
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33
code/AssetLib/Irr/IRRMeshLoader.cpp
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@ -3,7 +3,7 @@
Open Asset Import Library (assimp) Open Asset Import Library (assimp)
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team Copyright (c) 2006-2024, assimp team
All rights reserved. All rights reserved.
@ -69,14 +69,6 @@ static constexpr aiImporterDesc desc = {
"xml irrmesh" "xml irrmesh"
}; };
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by Importer
IRRMeshImporter::IRRMeshImporter() = default;
// ------------------------------------------------------------------------------------------------
// Destructor, private as well
IRRMeshImporter::~IRRMeshImporter() = default;
// ------------------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------------------
// Returns whether the class can handle the format of the given file. // Returns whether the class can handle the format of the given file.
bool IRRMeshImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const { bool IRRMeshImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
@ -116,8 +108,9 @@ void IRRMeshImporter::InternReadFile(const std::string &pFile,
std::unique_ptr<IOStream> file(pIOHandler->Open(pFile)); std::unique_ptr<IOStream> file(pIOHandler->Open(pFile));
// Check whether we can read from the file // Check whether we can read from the file
if (file == nullptr) if (file == nullptr) {
throw DeadlyImportError("Failed to open IRRMESH file ", pFile); throw DeadlyImportError("Failed to open IRRMESH file ", pFile);
}
// Construct the irrXML parser // Construct the irrXML parser
XmlParser parser; XmlParser parser;
@ -148,13 +141,11 @@ void IRRMeshImporter::InternReadFile(const std::string &pFile,
// int vertexFormat = 0; // 0 = normal; 1 = 2 tcoords, 2 = tangents // int vertexFormat = 0; // 0 = normal; 1 = 2 tcoords, 2 = tangents
bool useColors = false; bool useColors = false;
/* // irrmesh files have a top level <mesh> owning multiple <buffer> nodes.
** irrmesh files have a top level <mesh> owning multiple <buffer> nodes. // Each <buffer> contains <material>, <vertices>, and <indices>
** Each <buffer> contains <material>, <vertices>, and <indices> // <material> tags here directly owns the material data specs
** <material> tags here directly owns the material data specs // <vertices> are a vertex per line, contains position, UV1 coords, maybe UV2, normal, tangent, bitangent
** <vertices> are a vertex per line, contains position, UV1 coords, maybe UV2, normal, tangent, bitangent // <boundingbox> is ignored, I think assimp recalculates those?
** <boundingbox> is ignored, I think assimp recalculates those?
*/
// Parse the XML file // Parse the XML file
pugi::xml_node const &meshNode = root.child("mesh"); pugi::xml_node const &meshNode = root.child("mesh");
@ -201,7 +192,6 @@ void IRRMeshImporter::InternReadFile(const std::string &pFile,
// This is possible ... remove the mesh from the list and skip further reading // This is possible ... remove the mesh from the list and skip further reading
ASSIMP_LOG_WARN("IRRMESH: Found mesh with zero vertices"); ASSIMP_LOG_WARN("IRRMESH: Found mesh with zero vertices");
releaseMaterial(&curMat); releaseMaterial(&curMat);
// releaseMesh(&curMesh);
continue; // Bail out early continue; // Bail out early
}; };
@ -331,7 +321,8 @@ void IRRMeshImporter::InternReadFile(const std::string &pFile,
// NOTE this might explode for UTF-16 and wchars // NOTE this might explode for UTF-16 and wchars
const char *sz = indicesNode.text().get(); const char *sz = indicesNode.text().get();
const char *end = sz + std::strlen(sz) + 1; const char *end = sz + std::strlen(sz);
// For each index loop over aiMesh faces // For each index loop over aiMesh faces
while (SkipSpacesAndLineEnd(&sz, end)) { while (SkipSpacesAndLineEnd(&sz, end)) {
if (curFace >= faceEnd) { if (curFace >= faceEnd) {
@ -377,9 +368,10 @@ void IRRMeshImporter::InternReadFile(const std::string &pFile,
} }
} }
// We should be at the end of mFaces // We should be at the end of mFaces
if (curFace != faceEnd) if (curFace != faceEnd) {
ASSIMP_LOG_ERROR("IRRMESH: Not enough indices"); ASSIMP_LOG_ERROR("IRRMESH: Not enough indices");
} }
}
// Finish processing the mesh - do some small material workarounds // Finish processing the mesh - do some small material workarounds
if (curMatFlags & AI_IRRMESH_MAT_trans_vertex_alpha && !useColors) { if (curMatFlags & AI_IRRMESH_MAT_trans_vertex_alpha && !useColors) {
@ -388,7 +380,6 @@ void IRRMeshImporter::InternReadFile(const std::string &pFile,
aiMaterial *mat = (aiMaterial *)curMat; aiMaterial *mat = (aiMaterial *)curMat;
mat->AddProperty(&curColors[0].a, 1, AI_MATKEY_OPACITY); mat->AddProperty(&curColors[0].a, 1, AI_MATKEY_OPACITY);
} }
// textMeaning = 2;
// end of previous buffer. A material and a mesh should be there // end of previous buffer. A material and a mesh should be there
if (!curMat || !curMesh) { if (!curMat || !curMesh) {