static inline
void ipcs_table_refresh_wireless(struct nc_ipcs_table *tbl, int fd)
{
struct nc_ipcs_table_item *ipc = NULL;
char iface_name[32];
uint8_t hwaddr[ETH_ALEN] = {0};
uint32_t src_ip = 0;
int ret = -1;
int i;
if (tbl->wireless_enable == 0)
{
return ;
}
sprintf(iface_name, "%s.%d", tbl->iface_name, NC_WIRELESS_VID);
ret = get_iface_addr(iface_name, hwaddr, ETH_ALEN, &src_ip);
if (ret < 0)
{
return ;
}
if (tbl->wireless_enable)
{
for (i = 0; i < NC_WIRELESS_SZ; ++i)
{
ipc = &tbl->wireless_ipcs[i];
if (ipc->alive_sec < 0)
{
continue;
}
if (ipc->alive_sec == 0)
{
send_ipc_info(tbl, -1, ipc->mac, ipc->ip, 1);
}
else
{
if ((ipc->alive_sec & 0x1) == 0x1)
{
st_dbg("send to \n");
send_arp_req(fd, hwaddr, src_ip, ipc->ip, NULL, 0);
}
}
}
}
}
int send_arp_reqs()
{
int sock, i;
if ((sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ARP))) == -1) {
printf("send_arp_reqs: socket: %s\n", strerror(errno));
return 1;
}
for (i = 0; i < nh; i++)
send_arp_req(sock, hosts[i].ipaddr);
close(sock);
return 0;
}
static int recv_onvif_probematch(
struct nc_ipcs_table *tbl,
int arp_fd,
int port_idx,
char *probematch,
int pm_len,
struct sockaddr_in *addr
)
{
char iface_name[32];
uint8_t hwaddr[ETH_ALEN] = {0};
uint32_t src_ip = 0;
uint32_t tgt_ip = addr->sin_addr.s_addr;
struct sockaddr_ll hw_sa;
int ret = -1;
if (port_idx < 0)
{
sprintf(iface_name, "%s.%d", tbl->iface_name, NC_WIRELESS_VID);
}
else
{
sprintf(iface_name, "%s.%d", tbl->iface_name, NC_WIRE_VID_START + port_idx);
}
ret = get_iface_addr(iface_name, hwaddr, ETH_ALEN, &src_ip);
if (ret < 0)
{
return -1;
}
memset(&hw_sa, 0, sizeof(hw_sa));
hw_sa.sll_family = AF_PACKET;
hw_sa.sll_protocol = htons(ETH_P_ARP);
hw_sa.sll_ifindex = if_nametoindex(iface_name);
hw_sa.sll_halen = ETH_ALEN;
memcpy(hw_sa.sll_addr, hwaddr, ETH_ALEN);
return send_arp_req(arp_fd, hwaddr, src_ip, tgt_ip, &hw_sa, sizeof(hw_sa));
}
static inline
void ipcs_table_refresh_wire(struct nc_ipcs_table *tbl, int *fds)
{
struct nc_ipcs_table_item *ipc = NULL;
int i;
for (i = 0; i < tbl->wire_cnt; ++i)
{
ipc = &tbl->wire_ipcs[i];
if (ipc->alive_sec < 0)
{
continue;
}
if (ipc->alive_sec == 0)
{
send_ipc_info(tbl, i, ipc->mac, ipc->ip, 1);
}
else
{
char iface_name[32];
uint8_t hwaddr[ETH_ALEN] = {0};
uint32_t src_ip = 0;
int ret = -1;
sprintf(iface_name, "%s.%d", tbl->iface_name, NC_WIRE_VID_START + i);
ret = get_iface_addr(iface_name, hwaddr, ETH_ALEN, &src_ip);
if (ret < 0)
{
continue;
}
send_arp_req(fds[i], hwaddr, src_ip, ipc->ip, NULL, 0);
}
}
}
int handle_rtm_newroute(const struct nlmsghdr *nl){
const struct rtmsg *rt = NLMSG_DATA(nl);
struct rtattr *ra;
void *as,*ad,*ag;
int rlen,oif;
route *r,**prev;
size_t flen;
oif = -1;
if((r = create_route()) == NULL){
return -1;
}
switch( (r->family = rt->rtm_family) ){
case AF_INET:{
flen = sizeof(uint32_t);
as = &((struct sockaddr_in *)&r->sss)->sin_addr;
ad = &((struct sockaddr_in *)&r->ssd)->sin_addr;
ag = &((struct sockaddr_in *)&r->ssg)->sin_addr;
break;}case AF_INET6:{
flen = sizeof(uint32_t) * 4;
as = &((struct sockaddr_in6 *)&r->sss)->sin6_addr;
ad = &((struct sockaddr_in6 *)&r->ssd)->sin6_addr;
ag = &((struct sockaddr_in6 *)&r->ssg)->sin6_addr;
break;}case AF_BRIDGE:{
// FIXME wtf is a bridge route
diagnostic("got a bridge route hrmmm FIXME");
return -1; // FIXME
break;}default:{
flen = 0;
break;} }
r->maskbits = rt->rtm_dst_len;
if(flen == 0 || flen > sizeof(r->sss.__ss_padding)){
diagnostic("Unknown route family %u",rt->rtm_family);
return -1;
}
rlen = nl->nlmsg_len - NLMSG_LENGTH(sizeof(*rt));
ra = (struct rtattr *)((char *)(NLMSG_DATA(nl)) + sizeof(*rt));
memset(&r->ssg,0,sizeof(r->ssg));
memset(&r->ssd,0,sizeof(r->ssd));
memset(&r->sss,0,sizeof(r->sss));
while(RTA_OK(ra,rlen)){
switch(ra->rta_type){
case RTA_DST:{
if(RTA_PAYLOAD(ra) != flen){
diagnostic("Expected %zu dst bytes, got %zu",
flen,RTA_PAYLOAD(ra));
break;
}
if(r->ssd.ss_family){
diagnostic("Got two destinations for route");
break;
}
memcpy(ad,RTA_DATA(ra),flen);
r->ssd.ss_family = r->family;
break;}case RTA_PREFSRC: case RTA_SRC:{
// FIXME do we not want to prefer PREFSRC?
if(RTA_PAYLOAD(ra) != flen){
diagnostic("Expected %zu src bytes, got %zu",
flen,RTA_PAYLOAD(ra));
break;
}
if(r->sss.ss_family){
diagnostic("Got two sources for route");
break;
}
memcpy(as,RTA_DATA(ra),flen);
r->sss.ss_family = r->family;
break;}case RTA_IIF:{
if(RTA_PAYLOAD(ra) != sizeof(int)){
diagnostic("Expected %zu iiface bytes, got %zu",
sizeof(int),RTA_PAYLOAD(ra));
break;
}
// we don't use RTA_OIF: iif = *(int *)RTA_DATA(ra);
break;}case RTA_OIF:{
if(RTA_PAYLOAD(ra) != sizeof(int)){
diagnostic("Expected %zu oiface bytes, got %zu",
sizeof(int),RTA_PAYLOAD(ra));
break;
}
oif = *(int *)RTA_DATA(ra);
break;}case RTA_GATEWAY:{
if(RTA_PAYLOAD(ra) != flen){
diagnostic("Expected %zu gw bytes, got %zu",
flen,RTA_PAYLOAD(ra));
break;
}
if(r->ssg.ss_family){
diagnostic("Got two gateways for route");
break;
}
// We get 0.0.0.0 as the gateway when there's no 'via'
if(memcmp(ag,RTA_DATA(ra),flen)){
memcpy(ag,RTA_DATA(ra),flen);
r->ssg.ss_family = r->family;
}
break;}case RTA_PRIORITY:{
break;}case RTA_METRICS:{
break;}case RTA_MULTIPATH:{
// break;}case RTA_PROTOINFO:{ // unused
break;}case RTA_FLOW:{
break;}case RTA_CACHEINFO:{
// break;}case RTA_SESSION:{ // unused
// break;}case RTA_MP_ALGO:{ // unused
break;}case RTA_TABLE:{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
break;}case RTA_MARK:{
#endif
break;}case RTA_MFC_STATS:{
break;}case RTA_VIA:{
break;}case RTA_NEWDST:{
break;}case RTA_PREF:{
break;}case RTA_ENCAP_TYPE:{
break;}case RTA_ENCAP:{
break;}case RTA_EXPIRES:{
break;}case RTA_PAD:{
break;}default:{
diagnostic("Unknown rtatype %u",ra->rta_type);
break;}}
ra = RTA_NEXT(ra,rlen);
}
if(rlen){
diagnostic("%d excess bytes on newlink message",rlen);
}
if((r->iface = iface_by_idx(oif)) == NULL){
diagnostic("Unknown output interface %d on %s",oif,r->iface->name);
goto err;
}
{
char str[INET6_ADDRSTRLEN],via[INET6_ADDRSTRLEN];
inet_ntop(rt->rtm_family,ad,str,sizeof(str));
inet_ntop(rt->rtm_family,ag,via,sizeof(via));
diagnostic("[%s] new route to %s/%u %ls%ls%s",
r->iface->name,str,r->maskbits,
rt->rtm_type == RTN_LOCAL ? L"(local)" :
rt->rtm_type == RTN_BROADCAST ? L"(broadcast)" :
rt->rtm_type == RTN_UNREACHABLE ? L"(unreachable)" :
rt->rtm_type == RTN_ANYCAST ? L"(anycast)" :
rt->rtm_type == RTN_UNICAST ? L"(unicast)" :
rt->rtm_type == RTN_MULTICAST ? L"(multicast)" :
rt->rtm_type == RTN_BLACKHOLE ? L"(blackhole)" :
rt->rtm_type == RTN_MULTICAST ? L"(multicast)" : L"",
r->ssg.ss_family ? L" via " : L"",
r->ssg.ss_family ? via : "");
}
// We're not interest in blackholes, unreachables, prohibits, NATs yet
if(rt->rtm_type != RTN_UNICAST && rt->rtm_type != RTN_LOCAL
&& rt->rtm_type != RTN_BROADCAST
&& rt->rtm_type != RTN_ANYCAST
&& rt->rtm_type != RTN_MULTICAST){
free_route(r);
return 0;
}
assert(r->iface);
if(!r->sss.ss_family){
struct routepath rp;
if(get_router(r->sss.ss_family,ad,&rp) == 0){
if(r->sss.ss_family == AF_INET){
memcpy(as,rp.src,4);
}else if(r->sss.ss_family == AF_INET6){
memcpy(as,rp.src,16);
}else{
assert(0);
}
}else{ // FIXME vicious hackery!
if(r->family == AF_INET6){
memcpy(as,r->iface->ip6defsrc,flen);
r->sss.ss_family = AF_INET6;
}
}
}
if(r->family == AF_INET){
lock_interface(r->iface);
if(add_route4(r->iface,ad,r->ssg.ss_family ? ag : NULL,
r->sss.ss_family ? as : NULL,
r->maskbits)){
unlock_interface(r->iface);
diagnostic("Couldn't add route to %s",r->iface->name);
goto err;
}
if(r->ssg.ss_family){
send_arp_req(r->iface,r->iface->bcast,ag,as);
}
unlock_interface(r->iface);
pthread_mutex_lock(&route_lock);
prev = &ip_table4;
// Order most-specific (largest maskbits) to least-specific (0 maskbits)
while(*prev){
if(r->maskbits > (*prev)->maskbits){
break;
}
prev = &(*prev)->next;
}
r->next = *prev;
*prev = r;
if(r->sss.ss_family){
while( *(prev = &(*prev)->next) ){
assert((*prev)->maskbits < r->maskbits);
if(!((*prev)->sss.ss_family)){
memcpy(&(*prev)->sss,&r->sss,sizeof(r->sss));
}
}
}
pthread_mutex_unlock(&route_lock);
}else if(r->family == AF_INET6){
lock_interface(r->iface);
if(add_route6(r->iface,ad,r->ssg.ss_family ? ag : NULL,r->sss.ss_family ? as : NULL,r->maskbits)){
unlock_interface(r->iface);
diagnostic("Couldn't add route to %s",r->iface->name);
goto err;
}
unlock_interface(r->iface);
pthread_mutex_lock(&route_lock);
prev = &ip_table6;
// Order most-specific (largest maskbits) to least-specific (0 maskbits)
while(*prev){
if(r->maskbits > (*prev)->maskbits){
break;
}
prev = &(*prev)->next;
}
r->next = *prev;
*prev = r;
// FIXME set less-specific sources
pthread_mutex_unlock(&route_lock);
}
return 0;
err:
free_route(r);
return -1;
}