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#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;
}
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