first commit

Version 3.x.x

runtime/string_manager.h

@@ -0,0 +1,60 @@
+#ifndef STRING_MANAGER_H
+#define STRING_MANAGER_H
+
+class CipherRC5;
+
+struct STRING_DIRECTORY {
+	uint32_t NumberOfEntries;
+	// STRING_ENTRY Entries[];
+};
+
+struct STRING_ENTRY {
+	uint32_t Id;
+	uint32_t OffsetToData;
+	uint32_t Size;
+};
+
+class VirtualString
+{
+public:
+	VirtualString(const STRING_ENTRY *entry, HMODULE instance, uint32_t key);
+	~VirtualString();
+	uint8_t *AcquirePointer();
+	bool Release();
+	uint8_t *address() const { return address_; }
+private:
+	void Clear();
+	size_t use_count_;
+	uint8_t *address_;
+	size_t size_;
+
+	// no copy ctr or assignment op
+	VirtualString(const VirtualString &);
+	VirtualString &operator =(const VirtualString &);
+};
+
+class StringManager
+{
+public:
+	StringManager(const uint8_t *data, HMODULE instance, const uint8_t *key);
+	~StringManager();
+	const void *DecryptString(const void *str);
+	bool FreeString(const void *str);
+private:
+	STRING_DIRECTORY DecryptDirectory(const STRING_DIRECTORY *directory_enc) const;
+	STRING_ENTRY DecryptEntry(const STRING_ENTRY *entry_enc) const;
+	size_t IndexById(uint32_t id) const;
+	size_t IndexByAddress(const void *address) const;
+	const uint8_t *data_;
+	HMODULE instance_;
+	CRITICAL_SECTION critical_section_;
+	VirtualString **strings_;
+	uint32_t key_;
+	size_t size_;
+
+	// no copy ctr or assignment op
+	StringManager(const StringManager &);
+	StringManager &operator =(const StringManager &);
+};
+
+#endif