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#ifndef _CLIENTREGISTRY_H_
#define _CLIENTREGISTRY_H_

#include <windows.h>

#if STEAM_REG_BUILDING_DLL
# define STEAM_REG_DLLIMPORT __declspec(dllexport)
#else
# define STEAM_REG_DLLIMPORT __declspec(dllimport)
#endif
#define STEAM_REG_CALL __cdecl

// For some reason these data types aren't defined in C...
#ifndef bool
#define bool BOOL
#endif
#ifndef true
#define true TRUE
#endif
#ifndef false
#define false FALSE
#endif

#ifdef __cplusplus
extern "C" {
#endif

/*** CLIENT REGISTRY STRUCTURES ***/

typedef struct tagEnumerationHeader
{
short Magic; // always 0x5001
unsigned long BlockLength; // length of block (for hierarchy)
unsigned long NullPadding; // how many bytes of 0's there are after the data segment
} EnumerationHeader;
// This is the *exact* size of the structure (in the file)
#define EnumerationHeaderSize 10
// Every one of these structures has a Magic equal to this value
#define STEAM_HEADER_MAGIC 0x5001

typedef struct tagEnumeratedItem
{
short DescriptorLength;
unsigned long DataLength;
} EnumeratedItem;
// This is the *exact* size of the structure (in the file)
#define EnumeratedItemSize 6

// To determine whether the data is a key or a value
#define STEAM_REG_SECTION_KEYS 1
#define STEAM_REG_SECTION_VALUES 2

// To determine whether the value descriptor is a datatype or the actual data
#define STEAM_REG_VALUE_TYPE 1
#define STEAM_REG_VALUE_DATA 2

// Value datatypes
#define STEAM_REG_SZ 0
#define STEAM_REG_DWORD 1
#define STEAM_REG_BINARY 2
// Not official, but these make sense (start at 10)
#define STEAM_REG_BOOL 10
// "Special" value types (start at 20)
#define STEAM_REG_IPADDR 20
#define STEAM_REG_IPADDRPORT 21
#define STEAM_REG_TIMESTAMP 22
#define STEAM_REG_CHECKSUM 23
#define STEAM_REG_ENUM 24
#define STEAM_REG_KEYENUM 25

/*** PARSER STRUCTURES ***/

typedef struct _steamregKey steamregKey;
typedef steamregKey* steamregKeyPtr;
struct _steamregKey
{
char* Name;
struct _steamregKey* PrevKey;
struct _steamregKey* NextKey;
struct _steamregKey* Children;
struct _steamregKey* Parent;
struct _steamregValue* Values;
};

typedef struct _steamregValue steamregValue;
typedef steamregValue* steamregValuePtr;
struct _steamregValue
{
char* Name;
unsigned long Type;
void* DataPtr; // Reference to actual data
unsigned long DataSize;
struct _steamregValue* PrevValue;
struct _steamregValue* NextValue;
struct _steamregKey* Parent;
};

/*** SPECIAL STRUCTURES ***/

typedef struct _IPAddrPort IPAddrPort;
struct _IPAddrPort
{
unsigned long IP;
unsigned short port;
};

typedef struct _W3CDTF W3CDTF;
struct _W3CDTF
{
unsigned long year;
unsigned long month;
unsigned long day;
unsigned long hour;
unsigned long minute;
unsigned long second;
unsigned long offset_add; // boolean
unsigned long offset_hours;
unsigned long offset_minutes;
};

typedef struct _SteamChecksum SteamChecksum;
struct _SteamChecksum
{
unsigned long FileSize;
unsigned long Checksum;
};

typedef struct _Enumeration Enumeration;
typedef Enumeration* EnumerationPtr;
struct _Enumeration
{
char* Name; // This is sometimes used in place of EnumItem
unsigned long EnumItem;
void* FilePtr;
unsigned long DataSize;
struct _Enumeration* Parent;
struct _Enumeration* Child;
struct _Enumeration* PrevEnum;
struct _Enumeration* NextEnum;
};

/*** FUNCTIONS ***/

// Main functions
STEAM_REG_DLLIMPORT steamregKeyPtr STEAM_REG_CALL SteamRegOpenFile(const char* FileName);
STEAM_REG_DLLIMPORT void STEAM_REG_CALL SteamRegCloseFile(steamregKeyPtr Key);

// Misc functions
STEAM_REG_DLLIMPORT char* STEAM_REG_CALL SteamRegGetKeyPath(const steamregKeyPtr Key);
STEAM_REG_DLLIMPORT char* STEAM_REG_CALL SteamRegGetValuePath(const steamregValuePtr Value);
STEAM_REG_DLLIMPORT bool STEAM_REG_CALL SteamRegTestKeyPath(const steamregKeyPtr Key, const char* Expression);
STEAM_REG_DLLIMPORT bool STEAM_REG_CALL SteamRegTestValuePath(const steamregValuePtr Value, const char* Expression);

// Special parser functions
STEAM_REG_DLLIMPORT IPAddrPort* STEAM_REG_CALL SteamRegParseIPAddrPort(void* FilePtr, const long DataLength);
STEAM_REG_DLLIMPORT W3CDTF* STEAM_REG_CALL SteamRegParseTimeStamp(void* FilePtr, long DataLength);
STEAM_REG_DLLIMPORT SteamChecksum STEAM_REG_CALL SteamRegParseChecksum(void* FilePtr, const long DataLength);
STEAM_REG_DLLIMPORT unsigned long STEAM_REG_CALL SteamRegParseRawEnum(EnumerationPtr RootPtr, void* FilePtr, const unsigned long DataSize, const bool Recursive);
STEAM_REG_DLLIMPORT EnumerationPtr STEAM_REG_CALL SteamRegParseEnum(void* FilePtr, const long DataLength);
STEAM_REG_DLLIMPORT EnumerationPtr STEAM_REG_CALL SteamRegParseKeyEnum(void* FilePtr, const long DataLength);

#ifdef __cplusplus
}
#endif

#endif /* _CLIENTREGISTRY_H_ */

_________________
- The grandmasta is in ze hood -

i have no idea what that means

_________________

It's a C header file. How hard is it?
Would be good to have the rest?