tb_iterator_ref_t tb_ifaddrs_itor(tb_ifaddrs_ref_t ifaddrs, tb_bool_t reload)
{
// check
tb_list_ref_t interfaces = (tb_list_ref_t)ifaddrs;
tb_assert_and_check_return_val(interfaces, tb_null);
// uses the cached interfaces?
tb_check_return_val(reload, (tb_iterator_ref_t)interfaces);
// clear interfaces first
tb_list_clear(interfaces);
// query the list of interfaces.
struct ifaddrs* list = tb_null;
if (!getifaddrs(&list) && list)
{
#if 0
// init sock
tb_long_t sock = socket(AF_INET, SOCK_DGRAM, 0);
#endif
// done
struct ifaddrs* item = tb_null;
for (item = list; item; item = item->ifa_next)
{
// check
tb_check_continue(item->ifa_addr && item->ifa_name);
/* attempt to get the interface from the cached interfaces
* and make a new interface if no the cached interface
*/
tb_ifaddrs_interface_t interface_new = {0};
tb_ifaddrs_interface_ref_t interface = tb_ifaddrs_interface_find((tb_iterator_ref_t)interfaces, item->ifa_name);
if (!interface) interface = &interface_new;
// check
tb_assert(interface == &interface_new || interface->name);
// done
switch (item->ifa_addr->sa_family)
{
case AF_INET:
{
// the address
struct sockaddr_storage const* addr = (struct sockaddr_storage const*)item->ifa_addr;
// save ipaddr4
tb_ipaddr_t ipaddr4;
if (!tb_sockaddr_save(&ipaddr4, addr)) break;
interface->ipaddr4 = ipaddr4.u.ipv4;
// save flags
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4;
if ((item->ifa_flags & IFF_LOOPBACK) || tb_ipaddr_ip_is_loopback(&ipaddr4))
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
#if 0
// no hwaddr? get it
if (!(interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR))
{
// attempt get the hwaddr
struct ifreq ifr;
tb_memset(&ifr, 0, sizeof(ifr));
tb_strcpy(ifr.ifr_name, item->ifa_name);
if (!ioctl(sock, SIOCGIFHWADDR, &ifr))
{
// have hwaddr
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
// save hwaddr
tb_memcpy(interface->hwaddr.u8, ifr.ifr_hwaddr.sa_data, sizeof(interface->hwaddr.u8));
}
}
#endif
// new interface? save it
if (interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(item->ifa_name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
break;
case AF_INET6:
{
// the address
struct sockaddr_storage const* addr = (struct sockaddr_storage const*)item->ifa_addr;
// save ipaddr6
tb_ipaddr_t ipaddr6;
if (!tb_sockaddr_save(&ipaddr6, addr)) break;
interface->ipaddr6 = ipaddr6.u.ipv6;
// save flags
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6;
if ((item->ifa_flags & IFF_LOOPBACK) || tb_ipaddr_ip_is_loopback(&ipaddr6))
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
#if 0
// no hwaddr? get it
if (!(interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR))
{
// attempt get the hwaddr
struct ifreq ifr;
tb_memset(&ifr, 0, sizeof(ifr));
tb_strcpy(ifr.ifr_name, item->ifa_name);
if (!ioctl(sock, SIOCGIFHWADDR, &ifr))
{
// have hwaddr
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
// save hwaddr
tb_memcpy(interface->hwaddr.u8, ifr.ifr_hwaddr.sa_data, sizeof(interface->hwaddr.u8));
}
}
#endif
// new interface? save it
if (interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(item->ifa_name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
break;
case AF_PACKET:
{
// the address
struct sockaddr_ll const* addr = (struct sockaddr_ll const*)item->ifa_addr;
// check
tb_check_break(addr->sll_halen == sizeof(interface->hwaddr.u8));
// no hwaddr? get it
if (!(interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR))
{
// have hwaddr
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
// save hwaddr
tb_memcpy(interface->hwaddr.u8, addr->sll_addr, sizeof(interface->hwaddr.u8));
// new interface? save it
if (interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(item->ifa_name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
}
break;
default:
{
// trace
tb_trace_d("unknown family: %d", item->ifa_addr->sa_family);
}
break;
}
}
#if 0
// exit socket
if (sock) close(sock);
sock = 0;
#endif
// exit the interface list
freeifaddrs(list);
}
// ok?
return (tb_iterator_ref_t)interfaces;
}
static tb_void_t tb_ifaddrs_interface_done_ipaddr(tb_list_ref_t interfaces, tb_hash_map_ref_t names, struct nlmsghdr* response)
{
// check
tb_assert_and_check_return(interfaces && names && response);
// the info
struct ifaddrmsg* info = (struct ifaddrmsg *)NLMSG_DATA(response);
// must be not link
tb_assert_and_check_return(info->ifa_family != AF_PACKET);
// attempt to find the interface name
tb_bool_t owner = tb_false;
tb_char_t* name = (tb_char_t*)tb_hash_map_get(names, tb_u2p(info->ifa_index));
if (!name)
{
// get the interface name
struct rtattr* rta = tb_null;
tb_size_t rta_size = NLMSG_PAYLOAD(response, sizeof(struct ifaddrmsg));
for(rta = IFA_RTA(info); RTA_OK(rta, rta_size); rta = RTA_NEXT(rta, rta_size))
{
// done
tb_pointer_t rta_data = RTA_DATA(rta);
tb_size_t rta_data_size = RTA_PAYLOAD(rta);
switch(rta->rta_type)
{
case IFA_LABEL:
{
// make name
name = (tb_char_t*)tb_ralloc(name, rta_data_size + 1);
tb_assert_and_check_break(name);
// copy name
tb_strlcpy(name, rta_data, rta_data_size + 1);
// save name
tb_hash_map_insert(names, tb_u2p(info->ifa_index), name);
owner = tb_true;
}
break;
default:
break;
}
}
}
// check
tb_check_return(name);
// done
struct rtattr* rta = tb_null;
tb_size_t rta_size = NLMSG_PAYLOAD(response, sizeof(struct ifaddrmsg));
for(rta = IFA_RTA(info); RTA_OK(rta, rta_size); rta = RTA_NEXT(rta, rta_size))
{
/* attempt to get the interface from the cached interfaces
* and make a new interface if no the cached interface
*/
tb_ifaddrs_interface_t interface_new = {0};
tb_ifaddrs_interface_ref_t interface = tb_ifaddrs_interface_find((tb_iterator_ref_t)interfaces, name);
if (!interface) interface = &interface_new;
// check
tb_assert(interface == &interface_new || interface->name);
// done
tb_pointer_t rta_data = RTA_DATA(rta);
switch(rta->rta_type)
{
case IFA_LOCAL:
case IFA_ADDRESS:
{
// make ipaddr
tb_ipaddr_t ipaddr;
if (!tb_ifaddrs_netlink_ipaddr_save(&ipaddr, info->ifa_family, info->ifa_index, rta_data)) break;
// save flags
if ((info->ifa_flags & IFF_LOOPBACK) || tb_ipaddr_ip_is_loopback(&ipaddr))
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
// save ipaddr
switch (tb_ipaddr_family(&ipaddr))
{
case TB_IPADDR_FAMILY_IPV4:
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4;
interface->ipaddr4 = ipaddr.u.ipv4;
}
break;
case TB_IPADDR_FAMILY_IPV6:
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6;
interface->ipaddr6 = ipaddr.u.ipv6;
}
break;
default:
break;
}
// trace
tb_trace_d("name: %s, ipaddr: %{ipaddr}", name, &ipaddr);
// new interface? save it
if (tb_ipaddr_family(&ipaddr) && interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
break;
case IFA_LABEL:
case IFA_BROADCAST:
break;
default:
break;
}
}
// exit name
if (name && owner) tb_free(name);
name = tb_null;
}