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| scan_ip6(3) | FreeBSD Library Functions Manual | scan_ip6(3) |
NAME
scan_ip6 - parse an IPv6 number in ASCII representationSYNTAX
#include <libowfat/ip6.h>int scan_ip6(const char *src,char ip[16]);
DESCRIPTION
scan_ip6 parses an IPv6 number in RFC1884 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.scan_ip6 accepts upper and lower case hex letters, it understands "::" compression and partial IPv4 addresses as in "::FFFF:129.144.52.38".
To allow transparent usage of IPv4 in IPv6 applications, scan_ip6 also understands IPv4 addresses in dotted-decimal notation and will return an IPv4-mapped IPv6 address (i.e. "127.0.0.1" will be parsed as "::FFFF:127.0.0.1".
Unlike many other IP parsing routines, scan_ip6 does not recognize octal (like 0177.0.0.1) or hexadecimal numbers (like 0x7f000001) in the IPv4 part.
EXAMPLE
#include <libowfat/str.h>#include <libowfat/ip6.h>
char buf[]="::1"; char ip[16]; if (scan_ip6(buf,ip) != str_len(buf)) parse_error();
SEE ALSO
scan_ip6if(3), fmt_ip6(3), scan_ip4(3), inet_pton(3)
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