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240f510fa7
This fixes UBSAN errors reported by running our testsuite, importing the TPS demo, and running the TPS demo. I have tried, wherever possible, to fix issues related to reported issues but not directly reported by UBSAN because thse code paths just happened to not have been exercised in these cases. These fixes apply only to errors reported, and caused by, core/ The following things have been changed: * Make sure there are no implicit sign changing casts in core. * Explicitly type enums that are part of a public API such that users of the API cannot pass in wrongly-sized values leading to potential stack corruption. * Ensure that memcpy is never called with invalid or null pointers as this is undefined behavior, and when the engine is built with optimizations turned on leads to memory corruption and hard to debug crashes. * Replace enum values only used as static values with constexpr static const values instead. This has no runtime overhead. This makes it so that the size of the enums is explicit. * Make sure that nan and inf is handled consistently in String. * Implement a _to_int template to ensure that all of the paths use the same algorhithm, and correct the negative integer case. * Changed the way the json serializer precision work, and added tests to verify the new behavior. The behavior doesn't quite match master in particulary for negative doubles as the original code tried to cast -inf to an int. This then led to negative doubles losing all but one of their decimal points when serializing. Behavior in GDScript remains unchanged.
105 lines
4.9 KiB
C++
105 lines
4.9 KiB
C++
/**************************************************************************/
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/* file_access_encrypted.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef FILE_ACCESS_ENCRYPTED_H
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#define FILE_ACCESS_ENCRYPTED_H
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#include "core/io/file_access.h"
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#define ENCRYPTED_HEADER_MAGIC 0x43454447
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class FileAccessEncrypted : public FileAccess {
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public:
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enum Mode : int32_t {
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MODE_READ,
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MODE_WRITE_AES256,
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MODE_MAX
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};
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private:
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Vector<uint8_t> iv;
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Vector<uint8_t> key;
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bool writing = false;
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Ref<FileAccess> file;
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uint64_t base = 0;
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uint64_t length = 0;
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Vector<uint8_t> data;
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mutable uint64_t pos = 0;
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mutable bool eofed = false;
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bool use_magic = true;
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void _close();
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public:
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Error open_and_parse(Ref<FileAccess> p_base, const Vector<uint8_t> &p_key, Mode p_mode, bool p_with_magic = true, const Vector<uint8_t> &p_iv = Vector<uint8_t>());
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Error open_and_parse_password(Ref<FileAccess> p_base, const String &p_key, Mode p_mode);
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Vector<uint8_t> get_iv() const { return iv; }
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virtual Error open_internal(const String &p_path, int p_mode_flags) override; ///< open a file
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virtual bool is_open() const override; ///< true when file is open
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virtual String get_path() const override; /// returns the path for the current open file
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virtual String get_path_absolute() const override; /// returns the absolute path for the current open file
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virtual void seek(uint64_t p_position) override; ///< seek to a given position
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virtual void seek_end(int64_t p_position = 0) override; ///< seek from the end of file
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virtual uint64_t get_position() const override; ///< get position in the file
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virtual uint64_t get_length() const override; ///< get size of the file
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virtual bool eof_reached() const override; ///< reading passed EOF
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virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override;
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virtual Error get_error() const override; ///< get last error
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virtual Error resize(int64_t p_length) override { return ERR_UNAVAILABLE; }
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virtual void flush() override;
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virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override; ///< store an array of bytes
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virtual bool file_exists(const String &p_name) override; ///< return true if a file exists
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virtual uint64_t _get_modified_time(const String &p_file) override;
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virtual BitField<FileAccess::UnixPermissionFlags> _get_unix_permissions(const String &p_file) override;
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virtual Error _set_unix_permissions(const String &p_file, BitField<FileAccess::UnixPermissionFlags> p_permissions) override;
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virtual bool _get_hidden_attribute(const String &p_file) override;
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virtual Error _set_hidden_attribute(const String &p_file, bool p_hidden) override;
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virtual bool _get_read_only_attribute(const String &p_file) override;
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virtual Error _set_read_only_attribute(const String &p_file, bool p_ro) override;
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virtual void close() override;
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FileAccessEncrypted() {}
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~FileAccessEncrypted();
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};
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#endif // FILE_ACCESS_ENCRYPTED_H
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