static inline void netif_get_addrs_nix(struct netif_saddr_data *ifaddrs)
{
struct ifaddrs *ifaddr, *ifa;
unsigned int family, s;
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1) {
warn("getifaddrs() failed");
return;
}
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
if (ifa->ifa_addr == NULL || is_loopback(ifa))
continue;
family = ifa->ifa_addr->sa_family;
if ((family == AF_INET) || (family == AF_INET6)) {
s = getnameinfo(ifa->ifa_addr,
(family == AF_INET) ?
sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6),
host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if (s != 0) {
warn("getnameinfo() failed: %s",
gai_strerror(s));
continue;
}
netif_push(ifa->ifa_addr, ifaddrs, ifa->ifa_name);
}
}
freeifaddrs(ifaddr);
}
// ARP请求
void arp_request(u32 req_ip)
{
arp_frm *arp_rep;
eth_frm *eth_arp;
eth_arp = netif_alloc(ETH_HDRLEN + ARP_FRMLEN);
if(eth_arp != NULL)
{
arp_rep = (arp_frm *)(eth_arp->data);
arp_rep->hardware_type = htons(ARP_HWTYPE_ETH);
arp_rep->protocol_type = htons(ARP_PTTYPE_IP);
arp_rep->hw_addr_len = MAC_ADDR_LEN;
arp_rep->pt_addr_len = IP_ADDR_LEN;
arp_rep->operation = htons(ARP_TYPE_REQ);
mem_copy(arp_rep->src_mac, local.mac, MAC_ADDR_LEN);
arp_rep->src_ip.inw = local.ip.inw;
mem_setbytes(arp_rep->dst_mac, 0x00, MAC_ADDR_LEN);
arp_rep->dst_ip.inw = req_ip;
mem_setbytes(eth_arp->dst, 0xFF, MAC_ADDR_LEN);
mem_copy(eth_arp->src, local.mac, MAC_ADDR_LEN);
eth_arp->type = htons(ETH_TYPE_ARP);
netif_push(eth_arp, ETH_HDRLEN + ARP_FRMLEN, &local);
}
}
static inline void netif_get_addrs_win32(struct netif_saddr_data *ifaddrs)
{
PIP_ADAPTER_ADDRESSES adapter = get_adapters();
PIP_ADAPTER_UNICAST_ADDRESS unicast = NULL;
PIP_ADAPTER_ADDRESSES cur_adap = NULL;
SOCKET_ADDRESS socket_addr;
int family;
if (!adapter)
return;
for (cur_adap = adapter; !!cur_adap; cur_adap = cur_adap->Next) {
char *adap_name = NULL;
if (cur_adap->OperStatus != IfOperStatusUp ||
cur_adap->IfType == IF_TYPE_SOFTWARE_LOOPBACK)
continue;
os_wcs_to_utf8_ptr(cur_adap->FriendlyName, 0, &adap_name);
unicast = cur_adap->FirstUnicastAddress;
for (; !!unicast; unicast = unicast->Next) {
socket_addr = unicast->Address;
family = socket_addr.lpSockaddr->sa_family;
if (family == AF_INET || family == AF_INET6)
netif_push(socket_addr.lpSockaddr, ifaddrs,
adap_name);
}
bfree(adap_name);
}
bfree(adapter);
}