Merge branch 'master' into build_fixes

code/AssetLib/AMF/AMFImporter_Geometry.cpp

@@ -61,12 +61,12 @@ namespace Assimp {
 void AMFImporter::ParseNode_Mesh(XmlNode &node) {
     AMFNodeElementBase *ne = nullptr;
 
-    // create new mesh object.
-    ne = new AMFMesh(mNodeElement_Cur);
     // Check for child nodes
     if (0 != ASSIMP_stricmp(node.name(), "mesh")) {
         return;
     }
+    // create new mesh object.
+    ne = new AMFMesh(mNodeElement_Cur);
     bool found_verts = false, found_volumes = false;
     if (!node.empty()) {
         ParseHelper_Node_Enter(ne);

code/AssetLib/AMF/AMFImporter_Material.cpp

@@ -165,15 +165,15 @@ void AMFImporter::ParseNode_Texture(XmlNode &node) {
 	std::string type = node.attribute("type").as_string();
 	bool tiled = node.attribute("tiled").as_bool();
 
-	// create new texture object.
-    AMFNodeElementBase *ne = new AMFTexture(mNodeElement_Cur);
-
-	AMFTexture& als = *((AMFTexture*)ne);// alias for convenience
-
     if (node.empty()) {
 		return;
     }
 
+    // create new texture object.
+    AMFNodeElementBase *ne = new AMFTexture(mNodeElement_Cur);
+
+	AMFTexture& als = *((AMFTexture*)ne);// alias for convenience
+
     std::string enc64_data = node.value();
 	// Check for child nodes
 

code/AssetLib/glTF2/glTF2Asset.inl

@@ -560,18 +560,17 @@ inline void BufferView::Read(Value &obj, Asset &r) {
         buffer = r.buffers.Retrieve(bufferVal->GetUint());
     }
 
+    if (!buffer) {
+        throw DeadlyImportError("GLTF: Buffer view without valid buffer.");
+    }
+
     byteOffset = MemberOrDefault(obj, "byteOffset", size_t(0));
     byteLength = MemberOrDefault(obj, "byteLength", size_t(0));
     byteStride = MemberOrDefault(obj, "byteStride", 0u);
 
     // Check length
     if ((byteOffset + byteLength) > buffer->byteLength) {
-        const uint8_t val_size = 64;
-
-        char val[val_size];
-
-        ai_snprintf(val, val_size, "%llu, %llu", (unsigned long long)byteOffset, (unsigned long long)byteLength);
-        throw DeadlyImportError("GLTF: Buffer view with offset/length (", val, ") is out of range.");
+        throw DeadlyImportError("GLTF: Buffer view with offset/length (", byteOffset, "/", byteLength, ") is out of range.");
     }
 }
 
@@ -649,13 +648,14 @@ inline void Accessor::Read(Value &obj, Asset &r) {
     if (bufferView) {
         // Check length
         unsigned long long byteLength = (unsigned long long)GetBytesPerComponent() * (unsigned long long)count;
+
+        // handle integer overflow
+        if (byteLength < count) {
+            throw DeadlyImportError("GLTF: Accessor with offset/count (", byteOffset, "/", count, ") is out of range.");
+        }
+
         if ((byteOffset + byteLength) > bufferView->byteLength || (bufferView->byteOffset + byteOffset + byteLength) > bufferView->buffer->byteLength) {
-            const uint8_t val_size = 64;
-
-            char val[val_size];
-
-            ai_snprintf(val, val_size, "%llu, %llu", (unsigned long long)byteOffset, (unsigned long long)byteLength);
-            throw DeadlyImportError("GLTF: Accessor with offset/length (", val, ") is out of range.");
+            throw DeadlyImportError("GLTF: Accessor with offset/length (", byteOffset, "/", byteLength, ") is out of range.");
         }
     }
 

code/Common/DefaultIOSystem.cpp

@@ -60,19 +60,32 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 using namespace Assimp;
 
 #ifdef _WIN32
+
+const std::wstring wdummy;
+
 static std::wstring Utf8ToWide(const char *in) {
+    if (nullptr == in) {
+        return wdummy;
+    }
     int size = MultiByteToWideChar(CP_UTF8, 0, in, -1, nullptr, 0);
     // size includes terminating null; std::wstring adds null automatically
     std::wstring out(static_cast<size_t>(size) - 1, L'\0');
     MultiByteToWideChar(CP_UTF8, 0, in, -1, &out[0], size);
+    
     return out;
 }
 
+const std::string dummy;
+
 static std::string WideToUtf8(const wchar_t *in) {
+    if (nullptr == in) {
+        return dummy;
+    }
     int size = WideCharToMultiByte(CP_UTF8, 0, in, -1, nullptr, 0, nullptr, nullptr);
     // size includes terminating null; std::string adds null automatically
     std::string out(static_cast<size_t>(size) - 1, '\0');
     WideCharToMultiByte(CP_UTF8, 0, in, -1, &out[0], size, nullptr, nullptr);
+    
     return out;
 }
 #endif
@@ -104,7 +117,12 @@ IOStream *DefaultIOSystem::Open(const char *strFile, const char *strMode) {
     ai_assert(strMode != nullptr);
     FILE *file;
 #ifdef _WIN32
-    file = ::_wfopen(Utf8ToWide(strFile).c_str(), Utf8ToWide(strMode).c_str());
+    std::wstring name = Utf8ToWide(strFile);
+    if (name.empty()) {
+        return nullptr;
+    }
+    
+    file = ::_wfopen(name.c_str(), Utf8ToWide(strMode).c_str());
 #else
     file = ::fopen(strFile, strMode);
 #endif

code/Common/ScenePreprocessor.cpp

@@ -4,7 +4,6 @@ Open Asset Import Library (assimp)
 
 Copyright (c) 2006-2020, assimp team
 
-
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,
@@ -52,8 +51,12 @@ void ScenePreprocessor::ProcessScene() {
     ai_assert(scene != nullptr);
 
     // Process all meshes
-    for (unsigned int i = 0; i < scene->mNumMeshes; ++i)
+    for (unsigned int i = 0; i < scene->mNumMeshes; ++i) {
+        if (nullptr == scene->mMeshes[i]) {
+            continue;
+        }
         ProcessMesh(scene->mMeshes[i]);
+    }
 
     // - nothing to do for nodes for the moment
     // - nothing to do for textures for the moment
@@ -61,8 +64,12 @@ void ScenePreprocessor::ProcessScene() {
     // - nothing to do for cameras for the moment
 
     // Process all animations
-    for (unsigned int i = 0; i < scene->mNumAnimations; ++i)
+    for (unsigned int i = 0; i < scene->mNumAnimations; ++i) {
+        if (nullptr == scene->mAnimations[i]) {
+            continue;
+        }
         ProcessAnimation(scene->mAnimations[i]);
+    }
 
     // Generate a default material if none was specified
     if (!scene->mNumMaterials && scene->mNumMeshes) {

code/Common/ZipArchiveIOSystem.cpp

@@ -152,7 +152,7 @@ zlib_filefunc_def IOSystem2Unzip::get(IOSystem *pIOHandler) {
     mapping.ztell_file = (tell_file_func)tell;
     mapping.zseek_file = (seek_file_func)seek;
     mapping.zclose_file = (close_file_func)close;
-    mapping.zerror_file = (error_file_func)testerror;
+    mapping.zerror_file = testerror;
 
     mapping.opaque = reinterpret_cast<voidpf>(pIOHandler);
 

contrib/zlib/CMakeLists.txt

@@ -198,11 +198,9 @@ endif(MINGW)
 
 add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
 
-IF(WIN32)
-    INSTALL( TARGETS zlibstatic
-             EXPORT "${TARGETS_EXPORT_NAME}"
-             LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
-             ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
-             RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
-             COMPONENT ${LIBASSIMP_COMPONENT})
-ENDIF()
+INSTALL( TARGETS zlibstatic
+     EXPORT "${TARGETS_EXPORT_NAME}"
+     LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+     ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+     RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
+     COMPONENT ${LIBASSIMP_COMPONENT})

include/assimp/StringComparison.h

@@ -145,11 +145,7 @@ int ASSIMP_stricmp(const char *s1, const char *s2) {
 #if (defined _MSC_VER)
 
     return ::_stricmp(s1, s2);
-#elif defined(__GNUC__)
-
-    return ::strcasecmp(s1, s2);
 #else
-
     char c1, c2;
     do {
         c1 = tolower(*s1++);

include/assimp/material.h

@@ -735,9 +735,9 @@ public:
      *    #GetTextureCount() can be used to determine the number of textures
      *    per texture type.
      *  @param path Receives the path to the texture.
-     *    If the texture is embedded, receives a '*' followed by the id of
-     *    the texture (for the textures stored in the corresponding scene) which
-     *    can be converted to an int using a function like atoi.
+     *    Use aiScene::GetEmbeddedTexture() method to determine if returned path
+     *    is an image file to be opened or a string key of embedded texture stored in the corresponding scene
+     *    (could be a '*' followed by the id of the texture in case of no name)
      *    NULL is a valid value.
      *  @param mapping The texture mapping.
      *    NULL is allowed as value.

include/assimp/types.h

@@ -305,9 +305,9 @@ struct aiString {
 
     /** Copy a const char* to the aiString */
     void Set(const char *sz) {
-        const ai_int32 len = (ai_uint32)::strlen(sz);
+        ai_int32 len = (ai_uint32)::strlen(sz);
         if (len > (ai_int32)MAXLEN - 1) {
-            return;
+            len = (ai_int32) MAXLEN - 1;
         }
         length = len;
         memcpy(data, sz, len);
@@ -321,7 +321,10 @@ struct aiString {
         }
 
         length = rOther.length;
-        ;
+        if (length >(MAXLEN - 1)) {
+            length = (ai_int32) MAXLEN - 1;
+        }
+
         memcpy(data, rOther.data, length);
         data[length] = '\0';
         return *this;

include/assimp/vector3.inl

@@ -5,8 +5,6 @@ Open Asset Import Library (assimp)
 
 Copyright (c) 2006-2020, assimp team
 
-
-
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,
@@ -154,6 +152,9 @@ const aiVector3t<TReal>& aiVector3t<TReal>::operator *= (TReal f) {
 template <typename TReal>
 AI_FORCE_INLINE
 const aiVector3t<TReal>& aiVector3t<TReal>::operator /= (TReal f) {
+    if ( f == static_cast<TReal>(0.0)) {
+        return *this;
+    }
     const TReal invF = (TReal) 1.0 / f;
     x *= invF;
     y *= invF;