inet_pton.c File Reference

#include <string.h>
#include <errno.h>
#include <switch.h>

Include dependency graph for inet_pton.c:

Go to the source code of this file.

Defines
#define	IN6ADDRSZ   16
#define	INADDRSZ   4
#define	INT16SZ   2
Functions
static int	inet_pton4 (const char *src, unsigned char *dst)
int	switch_inet_pton (int af, const char *src, void *dst)

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Define Documentation

#define IN6ADDRSZ   16

Definition at line 39 of file inet_pton.c.

#define INADDRSZ   4

Definition at line 40 of file inet_pton.c.

Referenced by inet_pton4().

#define INT16SZ   2

Definition at line 41 of file inet_pton.c.

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Function Documentation

static int inet_pton4	(	const char *	src,
		unsigned char *	dst
	)			[static]

Definition at line 102 of file inet_pton.c.

References INADDRSZ.

Referenced by switch_inet_pton().

{
        static const char digits[] = "0123456789";
        int saw_digit, octets, ch;
        unsigned char tmp[INADDRSZ], *tp;

        saw_digit = 0;
        octets = 0;
        tp = tmp;
        *tp = 0;
        while ((ch = *src++) != '\0') {
                const char *pch;

                if ((pch = strchr(digits, ch)) != NULL) {
                        unsigned int val = *tp * 10 + (unsigned int) (pch - digits);

                        if (val > 255)
                                return (0);
                        *tp = (unsigned char) val;
                        if (!saw_digit) {
                                if (++octets > 4)
                                        return (0);
                                saw_digit = 1;
                        }
                } else if (ch == '.' && saw_digit) {
                        if (octets == 4)
                                return (0);
                        *++tp = 0;
                        saw_digit = 0;
                } else
                        return (0);
        }
        if (octets < 4)
                return (0);
        /* bcopy(tmp, dst, INADDRSZ); */
        memcpy(dst, tmp, INADDRSZ);
        return (1);
}

int switch_inet_pton	(	int	af,
		const char *	src,
		void *	dst
	)

Definition at line 73 of file inet_pton.c.

References inet_pton4().

{
        switch (af) {
        case AF_INET:
                return (inet_pton4(src, (unsigned char *) dst));
#ifdef ENABLE_IPV6
#ifndef AF_INET6
#define AF_INET6        (AF_MAX+1)      /* just to let this compile */
#endif
        case AF_INET6:
                return (inet_pton6(src, (unsigned char *) dst));
#endif
        default:
                errno = EAFNOSUPPORT;
                return (-1);
        }
        /* NOTREACHED */
}

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