NAME¶

scan_ip4 - parse an IPv4 number in dotted-decimal notation

SYNTAX¶

#include <libowfat/ip4.h>

int scan_ip4(const char *src,char ip[4]);

DESCRIPTION¶

scan_ip4 parses an IPv4 number in dotted-decimal ASCII representation from src and writes the result into ip. It returns the number of bytes read from src or 0 if the parsing failed.

Unlike many other IP parsing routines, scan_ip4 does not recognize octal (like 0177.0.0.1) or hexadecimal numbers (like 0x7f000001).

EXAMPLE¶

#include <libowfat/str.h>
#include <libowfat/ip4.h>

char buf[]="160.45.40.10";
char ip[4];
if (scan_ip4(buf,ip) != str_len(buf))
parse_error();

SEE ALSO¶

fmt_ip4(3), scan_ip6(3), inet_pton(3)