void add_addr_to_list(struct nl_object *obj, void *data)
{
char buf[INET6_ADDRSTRLEN+5];
std::list<vaddress> *list = static_cast<std::list<vaddress>*>(data);
struct nl_addr *naddr = rtnl_addr_get_local((struct rtnl_addr *) obj);
int ifindex = 0;
int scope = rtnl_addr_get_scope((struct rtnl_addr *) obj);
if (scope == rtnl_str2scope("link"))
ifindex = rtnl_addr_get_ifindex((struct rtnl_addr *) obj);
if (naddr)
{
int family = nl_addr_get_family(naddr);
nl_addr2str( naddr, buf, sizeof( buf ) );
vaddress vaddr(vaddress::Family(family), vaddress::strip_netmask(std::string(buf)), ifindex, false);
list->push_back( vaddr );
}
struct nl_addr *baddr = rtnl_addr_get_broadcast((struct rtnl_addr *) obj);
if (baddr)
{
int family = nl_addr_get_family(baddr);
nl_addr2str( baddr, buf, sizeof( buf ) );
vaddress vaddr(vaddress::Family(family), vaddress::strip_netmask(std::string(buf)), ifindex, true);
list->push_back( vaddr );
}
}
/**
* libnl callback function. Does the real parsing of a record returned by NETLINK. This function
* parses ADDRESS related packets
*
* @param obj Pointer to a struct nl_object response
* @param arg Pointer to a struct etherinfo element where the parse result will be saved
*/
static void callback_nl_address(struct nl_object *obj, void *arg)
{
struct etherinfo *ethi = (struct etherinfo *) arg;
struct nl_addr *addr;
char ip_str[66];
int family;
if( ethi == NULL ) {
return;
}
addr = rtnl_addr_get_local((struct rtnl_addr *)obj);
family = nl_addr_get_family(addr);
switch( family ) {
case AF_INET:
case AF_INET6:
memset(&ip_str, 0, 66);
inet_ntop(family, nl_addr_get_binary_addr(addr), (char *)&ip_str, 64);
if( family == AF_INET ) {
struct nl_addr *brdcst = rtnl_addr_get_broadcast((struct rtnl_addr *)obj);
char brdcst_str[66];
SET_STR_VALUE(ethi->ipv4_address, ip_str);
ethi->ipv4_netmask = rtnl_addr_get_prefixlen((struct rtnl_addr*) obj);
if( brdcst ) {
memset(&brdcst_str, 0, 66);
inet_ntop(family, nl_addr_get_binary_addr(brdcst), (char *)&brdcst_str, 64);
SET_STR_VALUE(ethi->ipv4_broadcast, brdcst_str);
}
} else {
ethi->ipv6_addresses = etherinfo_add_ipv6(ethi->ipv6_addresses,
ip_str,
rtnl_addr_get_prefixlen((struct rtnl_addr*) obj),
rtnl_addr_get_scope((struct rtnl_addr*) obj));
}
return;
default:
return;
}
}
TError TNlLink::WaitAddress(int timeout_s) {
struct nl_cache *cache;
int ret;
L() << "Wait for autoconf at " << GetDesc() << std::endl;
ret = rtnl_addr_alloc_cache(GetSock(), &cache);
if (ret < 0)
return Nl->Error(ret, "Cannot allocate addr cache");
do {
for (auto obj = nl_cache_get_first(cache); obj; obj = nl_cache_get_next(obj)) {
auto addr = (struct rtnl_addr *)obj;
if (!rtnl_addr_get_local(addr) ||
rtnl_addr_get_ifindex(addr) != GetIndex() ||
rtnl_addr_get_family(addr) != AF_INET6 ||
rtnl_addr_get_scope(addr) >= RT_SCOPE_LINK ||
(rtnl_addr_get_flags(addr) &
(IFA_F_TENTATIVE | IFA_F_DEPRECATED)))
continue;
L() << "Got " << TNlAddr(rtnl_addr_get_local(addr)).Format()
<< " at " << GetDesc() << std::endl;
nl_cache_free(cache);
return TError::Success();
}
usleep(1000000);
ret = nl_cache_refill(GetSock(), cache);
if (ret < 0)
return Nl->Error(ret, "Cannot refill address cache");
} while (--timeout_s > 0);
nl_cache_free(cache);
return TError(EError::Unknown, "Network autoconf timeout");
}
static void env_dump(struct nl_object *obj, void *arg)
{
struct nl_dump_params *p = arg;
struct rtnl_addr *addr = (struct rtnl_addr *) obj;
struct nl_cache *link_cache;
struct nl_addr *a;
static int index = 0;
char buf[128], pfx[32], *s;
snprintf(pfx, sizeof(pfx), "ADDR%d", index++);
nl_dump_line(p, "%s_FAMILY=%s\n", pfx,
nl_af2str(rtnl_addr_get_family(addr), buf, sizeof(buf)));
nl_dump_line(p, "%s_LOCAL=%s\n", pfx,
nl_addr2str(rtnl_addr_get_local(addr), buf, sizeof(buf)));
nl_dump_line(p, "%s_IFINDEX=%u\n", pfx, rtnl_addr_get_ifindex(addr));
link_cache = nl_cache_mngt_require_safe("route/link");
if (link_cache)
nl_dump_line(p, "%s_IFNAME=%s\n", pfx,
rtnl_link_i2name(link_cache,
rtnl_addr_get_ifindex(addr),
buf, sizeof(buf)));
if ((a = rtnl_addr_get_peer(addr)))
nl_dump_line(p, "%s_PEER=%s\n", pfx,
nl_addr2str(a, buf, sizeof(buf)));
if ((a = rtnl_addr_get_broadcast(addr)))
nl_dump_line(p, "%s_BROADCAST=%s\n", pfx,
nl_addr2str(a, buf, sizeof(buf)));
nl_dump_line(p, "%s_SCOPE=%s\n", pfx,
rtnl_scope2str(rtnl_addr_get_scope(addr),
buf, sizeof(buf)));
if ((s = rtnl_addr_get_label(addr)))
nl_dump_line(p, "%s_LABEL=%s\n", pfx, s);
rtnl_addr_flags2str(rtnl_addr_get_flags(addr), buf, sizeof(buf));
if (buf[0])
nl_dump_line(p, "%s_FLAGS=%s\n", pfx, buf);
nl_dump_line(p, "%s_CACHEINFO_VALID=%u\n", pfx,
rtnl_addr_get_valid_lifetime(addr));
if (link_cache)
nl_cache_put(link_cache);
#if 0
if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;
nl_dump_line(p, "ADDR_CACHEINFO_PREFERRED=%u\n",
ci->aci_prefered);
nl_dump_line(p, "ADDR_CACHEINFO_CREATED=%u\n", ci->aci_cstamp);
nl_dump_line(p, "ADDR_CACHEINFO_LASTUPDATE=%u\n",
ci->aci_tstamp);
}
#endif
}
