char *ipifcaddpref6(struct Ipifc *ifc, char **argv, int argc)
{
uint8_t onlink = 1;
uint8_t autoflag = 1;
uint64_t validlt = UINT64_MAX;
uint64_t preflt = UINT64_MAX;
uint64_t origint = NOW / 10 ^ 3;
uint8_t prefix[IPaddrlen];
int plen = 64;
struct Iplifc *lifc;
char addr[40], preflen[6];
char *params[3];
switch (argc) {
case 7:
preflt = atoi(argv[6]);
/* fall through */
case 6:
validlt = atoi(argv[5]);
/* fall through */
case 5:
autoflag = atoi(argv[4]);
/* fall through */
case 4:
onlink = atoi(argv[3]);
/* fall through */
case 3:
plen = atoi(argv[2]);
case 2:
break;
default:
return Ebadarg;
}
if ((parseip(prefix, argv[1]) != 6) ||
(validlt < preflt) || (plen < 0) || (plen > 64) || (islinklocal(prefix))
)
return Ebadarg;
lifc = kzmalloc(sizeof(struct Iplifc), 0);
lifc->onlink = (onlink != 0);
lifc->autoflag = (autoflag != 0);
lifc->validlt = validlt;
lifc->preflt = preflt;
lifc->origint = origint;
if (ifc->m->pref2addr != NULL)
ifc->m->pref2addr(prefix, ifc->mac);
else
return Ebadarg;
snprintf(addr, sizeof(addr), "%I", prefix);
snprintf(preflen, sizeof(preflen), "/%d", plen);
params[0] = "add";
params[1] = addr;
params[2] = preflen;
return ipifcadd(ifc, params, 3, 0, lifc);
}
int
v6addrtype(uint8_t *addr)
{
if(isv4(addr) || ipcmp(addr, IPnoaddr) == 0)
return unknownv6;
else if(islinklocal(addr) ||
isv6mcast(addr) && (addr[1] & 0xF) <= Link_local_scop)
return linklocalv6;
else
return globalv6;
}
int v6addrtype(uint8_t * addr)
{
if (isv6global(addr))
return globalv6;
if (islinklocal(addr))
return linklocalv6;
if (isv6mcast(addr))
return multicastv6;
if (issitelocal(addr))
return sitelocalv6;
return unknownv6;
}
char*
ipifcadd6(Ipifc *ifc, char**argv, int argc)
{
int plen = 64;
int32_t origint = NOW / 1000, preflt = ~0L, validlt = ~0L;
char addr[Maxv6repr], preflen[6];
char *params[3];
uint8_t autoflag = 1, onlink = 1;
uint8_t prefix[IPaddrlen];
Iplifc *lifc;
switch(argc) {
case 7:
preflt = atoi(argv[6]);
/* fall through */
case 6:
validlt = atoi(argv[5]);
/* fall through */
case 5:
autoflag = atoi(argv[4]);
/* fall through */
case 4:
onlink = atoi(argv[3]);
/* fall through */
case 3:
plen = atoi(argv[2]);
/* fall through */
case 2:
break;
default:
return Ebadarg;
}
if (parseip(prefix, argv[1]) != 6)
return "bad ipv6 address";
if (validlt < preflt)
return "valid ipv6 lifetime less than preferred lifetime";
if (plen < 0)
return "negative ipv6 prefix length";
/* i think that this length limit is bogus - geoff */
// if (plen > 64)
// return "ipv6 prefix length greater than 64;
if (islinklocal(prefix))
return "ipv6 prefix is link-local";
lifc = smalloc(sizeof(Iplifc));
lifc->onlink = (onlink != 0);
lifc->autoflag = (autoflag != 0);
lifc->validlt = validlt;
lifc->preflt = preflt;
lifc->origint = origint;
/* issue "add" ctl msg for v6 link-local addr and prefix len */
if(!ifc->medium->pref2addr)
return "no pref2addr on interface";
ifc->medium->pref2addr(prefix, ifc->mac); /* mac → v6 link-local addr */
snprint(addr, sizeof addr, "%I", prefix);
snprint(preflen, sizeof preflen, "/%d", plen);
params[0] = "add";
params[1] = addr;
params[2] = preflen;
return ipifcadd(ifc, params, 3, 0, lifc);
}