59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
#include <u.h>
|
|
#include <libc.h>
|
|
#include <ip.h>
|
|
|
|
static uchar loopbacknet[IPaddrlen] = {
|
|
0, 0, 0, 0,
|
|
0, 0, 0, 0,
|
|
0, 0, 0xff, 0xff,
|
|
127, 0, 0, 0
|
|
};
|
|
static uchar loopbackmask[IPaddrlen] = {
|
|
0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0, 0, 0
|
|
};
|
|
static uchar loopback6[IPaddrlen] = {
|
|
0, 0, 0, 0,
|
|
0, 0, 0, 0,
|
|
0, 0, 0, 0,
|
|
0, 0, 0, 1
|
|
};
|
|
|
|
// find first ip addr that isn't the friggin loopback address
|
|
// unless there are no others
|
|
int
|
|
myipaddr(uchar *ip, char *net)
|
|
{
|
|
Ipifc *nifc;
|
|
Iplifc *lifc;
|
|
static Ipifc *ifc;
|
|
uchar mynet[IPaddrlen];
|
|
|
|
ifc = readipifc(net, ifc, -1);
|
|
for(nifc = ifc; nifc; nifc = nifc->next)
|
|
for(lifc = nifc->lifc; lifc; lifc = lifc->next){
|
|
/* unspecified */
|
|
if(ipcmp(lifc->ip, IPnoaddr) == 0)
|
|
continue;
|
|
|
|
/* ipv6 loopback */
|
|
if(ipcmp(lifc->ip, loopback6) == 0)
|
|
continue;
|
|
|
|
/* ipv4 loopback */
|
|
maskip(lifc->ip, loopbackmask, mynet);
|
|
if(ipcmp(mynet, loopbacknet) == 0)
|
|
continue;
|
|
|
|
/* ipv6 linklocal */
|
|
if(ISIPV6LINKLOCAL(lifc->ip))
|
|
continue;
|
|
|
|
ipmove(ip, lifc->ip);
|
|
return 0;
|
|
}
|
|
ipmove(ip, IPnoaddr);
|
|
return -1;
|
|
}
|