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23 years ago
#ifndef IP6_H
#define IP6_H
extern unsigned int ip6_scan(const char *src,char *ip);
extern unsigned int ip6_fmt(char *dest,const char *ip);
extern unsigned int ip6_scan_flat(const char *src,char *);
extern unsigned int ip6_fmt_flat(char *dest,const char *);
ip6 address syntax: (h = hex digit), no leading '0' required
1. hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh
2. any number of 0000 may be abbreviated as "::", but only once
flat ip6 address syntax:
#define IP6_FMT 40
static const unsigned char V4mappedprefix[12]={0,0,0,0,0,0,0,0,0,0,0xff,0xff};
static const unsigned char V6loopback[16]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
static const unsigned char V6any[16]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
#define ip6_isv4mapped(ip) (byte_equal(ip,12,V4mappedprefix))
static const char ip4loopback[4] = {127,0,0,1};