inet_ntop.c File Reference

#include <stdio.h>

Include dependency graph for inet_ntop.c:

Go to the source code of this file.

Macros
#define	IN6ADDRSZ   16
#define	INT16SZ   2
#define	SPRINTF(x)   ((size_t)sprintf x)

Functions
static const char *	inet_ntop4 (const u_char *src, char *dst, size_t size)
PCSTR WSAAPI	inet_ntop (INT Family, PVOID pAddr, PSTR pStringBuf, size_t StringBufSize)

Macro Definition Documentation

IN6ADDRSZ

#define IN6ADDRSZ   16

Definition at line 22 of file inet_ntop.c.

INT16SZ

#define INT16SZ   2

Definition at line 26 of file inet_ntop.c.

SPRINTF

#define SPRINTF

(

x

)

((size_t)sprintf x)

Definition at line 32 of file inet_ntop.c.

Function Documentation

inet_ntop()

PCSTR WSAAPI inet_ntop	(	INT	Family,
		PVOID	pAddr,
		PSTR	pStringBuf,
		size_t	StringBufSize
	)

Definition at line 57 of file inet_ntop.c.

{
 
    switch (Family) {
    case AF_INET:
        return (inet_ntop4(pAddr, pStringBuf, StringBufSize));
#ifdef INET6
    case AF_INET6:
        return (inet_ntop6(pAddr, pStringBuf, StringBufSize));
#endif
    default:
        WSASetLastError(WSAEAFNOSUPPORT);
        return (NULL);
    }
    /* NOTREACHED */
}

inet_ntop4()

static const char * inet_ntop4 ( const u_char *  src, char *  dst, size_t  size  )

static

Definition at line 86 of file inet_ntop.c.

{
    static const char fmt[] = "%u.%u.%u.%u";
    char tmp[sizeof "255.255.255.255"];
 
    if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) {
        WSASetLastError(WSAEINVAL);
        return (NULL);
    }
    strcpy(dst, tmp);
    return (dst);
}

Referenced by inet_ntop().