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/*
** ident.h
**
** Author: Peter Eriksson <pen@lysator.liu.se>
** Intruder: Pr Emanuelsson <pell@lysator.liu.se>
*/
#ifndef __IDENT_H__
#define __IDENT_H__
#ifdef __P
# undef __P
#endif
#ifdef __STDC__
# define __P(AL) AL
#else
# define __P(AL) ()
#endif
/*
* Sigh, GCC v2 complains when using undefined struct tags
* in function prototypes...
*/
#if defined(__GNUC__) && !defined(IPPROTO_IP)
# define __STRUCT_IN_ADDR_P void *
#else
# define __STRUCT_IN_ADDR_P struct in_addr *
#endif
#if defined(__GNUC__) && !defined(DST_NONE)
# define __STRUCT_TIMEVAL_P void *
#else
# define __STRUCT_TIMEVAL_P struct timeval *
#endif
#ifndef IDBUFSIZE
# define IDBUFSIZE 2048
#endif
#ifndef IDPORT
# define IDPORT 113
#endif
typedef struct
{
int fd;
char buf[IDBUFSIZE];
} ident_t;
typedef struct {
int lport; /* Local port */
int fport; /* Far (remote) port */
char *identifier; /* Normally user name */
char *opsys; /* OS */
char *charset; /* Charset (what did you expect?) */
} IDENT; /* For higher-level routines */
/* Low-level calls and macros */
#define id_fileno(ID) ((ID)->fd)
extern ident_t * id_open __P((__STRUCT_IN_ADDR_P laddr,
__STRUCT_IN_ADDR_P faddr,
__STRUCT_TIMEVAL_P timeout));
extern int id_close __P((ident_t *id));
extern int id_query __P((ident_t *id,
int lport,
int fport,
__STRUCT_TIMEVAL_P timeout));
extern int id_parse __P((ident_t *id,
__STRUCT_TIMEVAL_P timeout,
int *lport,
int *fport,
char **identifier,
char **opsys,
char **charset));
/* High-level calls */
extern IDENT *ident_lookup __P((int fd, int timeout));
extern char *ident_id __P((int fd, int timeout));
void ident_free __P((IDENT *id));
#endif
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