Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

47 lines
883 B

#include "fmt.h"
#include "byte.h"
#include "ip4.h"
#include "ip6.h"
unsigned int fmt_ip6(char *s,const char ip[16])
{
unsigned int len;
unsigned int i;
unsigned int temp;
unsigned int compressing;
int j;
len = 0; compressing = 0;
for (j=0; j<16; j+=2) {
if (j==12 && ip6_isv4mapped(ip)) {
temp=ip4_fmt(s,ip+12);
len+=temp;
break;
}
temp = ((unsigned long) (unsigned char) ip[j] << 8) +
(unsigned long) (unsigned char) ip[j+1];
if (temp == 0) {
if (!compressing) {
compressing=1;
if (j==0) {
if (s) *s++=':'; ++len;
}
}
} else {
if (compressing) {
compressing=0;
if (s) *s++=':'; ++len;
}
i = fmt_xlong(s,temp); len += i; if (s) s += i;
if (j<14) {
if (s) *s++ = ':';
++len;
}
}
}
if (compressing) { *s++=':'; ++len; }
/* if (s) *s=0; */
return len;
}