void check_cache(struct cache_item* pFirstItem)
{
time_t time_stamp;
time(&time_stamp);
int current_time_stamp = ((int)(time_stamp));
struct cache_item* ptr = pFirstItem;
while(ptr != NULL)
{
if (ptr->next_item == NULL)
{
break;
}
if (current_time_stamp - ptr->next_item->time_stamp >= 15)
{
in_addr ip_addr;
ip_addr.s_addr = ptr->next_item->ip;
Debug("\n\n**** Removing cache entry, [%s, ", inet_ntoa(ip_addr));
DebugMAC(ptr->next_item->mac);
Debug("] *****\n\n");
remove_cache_item(ptr);
}
ptr = ptr->next_item;
}
}
int sr_handle_hwinfo(struct sr_instance* sr, c_hwinfo* hwinfo)
{
int num_entries;
int i = 0;
/* REQUIRES */
assert(sr);
assert(hwinfo);
num_entries = (ntohl(hwinfo->mLen) - (2*sizeof(uint32_t)))/sizeof(c_hw_entry);
/* Debug("Received Hardware Info with %d entries\n",num_entries); */
for ( i=0; i<num_entries; i++ )
{
switch( ntohl(hwinfo->mHWInfo[i].mKey))
{
case HWFIXEDIP:
Debug("Fixed IP: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
break;
case HWINTERFACE:
Debug("INTERFACE: %s\n",hwinfo->mHWInfo[i].value);
sr_add_interface(sr,hwinfo->mHWInfo[i].value);
break;
case HWSPEED:
Debug("Speed: %d\n",
ntohl(*((unsigned int*)hwinfo->mHWInfo[i].value)));
break;
case HWSUBNET:
Debug("Subnet: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
break;
case HWMASK:
Debug("Mask: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
break;
case HWETHIP:
Debug("IP: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
sr_set_ether_ip(sr,*((uint32_t*)hwinfo->mHWInfo[i].value));
break;
case HWETHER:
Debug("\tHardware Address: ");
DebugMAC(hwinfo->mHWInfo[i].value);
Debug("\n");
sr_set_ether_addr(sr,(unsigned char*)hwinfo->mHWInfo[i].value);
break;
default:
printf (" %d \n",ntohl(hwinfo->mHWInfo[i].mKey));
} /* -- switch -- */
} /* -- for -- */
printf("Router interfaces:\n");
sr_print_if_list(sr);
return num_entries;
} /* -- sr_handle_hwinfo -- */
/*******************************************************************
* Prints single ARP Cache Entry.
*******************************************************************/
void print_cache_entry(struct arp_cache_entry * ent)
{
struct in_addr ip_addr;
assert(ent);
ip_addr.s_addr = ent->ip_add;
printf("IP: %s MAC: ", inet_ntoa(ip_addr));
DebugMAC(ent->mac);
printf(" Time when Invalid: %lu\n",(long)ent->timenotvalid);
}
void sr_print_if(struct sr_if* iface)
{
struct in_addr ip_addr;
unsigned char * addr;
/* -- REQUIRES --*/
assert(iface);
assert(iface->name);
addr = (unsigned char *) &iface->addr;
ip_addr.s_addr = iface->ip;
Debug("%s\tHWaddr ",iface->name);
DebugMAC(addr);
Debug("\n\tinet addr %s\n",inet_ntoa(ip_addr));
} /* -- sr_print_if -- */
void sr_print_if(struct sr_vns_if* iface)
{
struct in_addr ip_addr;
/* -- REQUIRES --*/
assert(iface);
assert(iface->name);
ip_addr.s_addr = iface->ip;
Debug("%s\tHWaddr",iface->name);
DebugMAC(iface->addr);
Debug("\n");
Debug("\tinet addr %s\n",inet_ntoa(ip_addr));
} /* -- sr_print_if -- */
int sr_handle_hwinfo(struct sr_instance* sr, c_hwinfo* hwinfo)
{
int num_entries;
int i = 0;
struct sr_vns_if vns_if;
/* REQUIRES */
assert(sr);
assert(hwinfo);
num_entries = (ntohl(hwinfo->mLen) - (2*sizeof(uint32_t)))/sizeof(c_hw_entry);
Debug("Received Hardware Info with %d entries\n",num_entries);
vns_if.name[0] = 0;
for ( i=0; i<num_entries; i++ )
{
switch( ntohl(hwinfo->mHWInfo[i].mKey))
{
case HWFIXEDIP:
Debug("Fixed IP: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
break;
case HWINTERFACE:
Debug("Interface: %s\n",hwinfo->mHWInfo[i].value);
if (vns_if.name[0])
{ sr_integ_add_interface(sr, &vns_if); vns_if.name[0] = 0; }
strncpy(vns_if.name, hwinfo->mHWInfo[i].value, SR_NAMELEN);
break;
case HWSPEED:
Debug("Speed: %d\n",
ntohl(*((unsigned int*)hwinfo->mHWInfo[i].value)));
vns_if.speed =
ntohl(*((unsigned int*)hwinfo->mHWInfo[i].value));
break;
case HWSUBNET:
Debug("Subnet: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
break;
case HWMASK:
Debug("Mask: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
vns_if.mask = *((uint32_t*)hwinfo->mHWInfo[i].value);
break;
case HWETHIP:
Debug("Ethernet IP: %s\n",inet_ntoa(
*((struct in_addr*)(hwinfo->mHWInfo[i].value))));
vns_if.ip = *((uint32_t*)hwinfo->mHWInfo[i].value);
break;
case HWETHER:
Debug("Hardware Address: ");
DebugMAC(hwinfo->mHWInfo[i].value);
Debug("\n");
memcpy(vns_if.addr,
(unsigned char*)hwinfo->mHWInfo[i].value, 6);
break;
default:
printf (" %d \n",ntohl(hwinfo->mHWInfo[i].mKey));
} /* -- switch -- */
} /* -- for -- */
if (vns_if.name[0])
{ sr_integ_add_interface(sr, &vns_if); vns_if.name[0] = 0; }
/* flag that hardware has been initialized */
sr->hw_init = 1;
/* let subsystem know all the hardware has been set up */
sr_integ_hw_setup(sr);
return num_entries;
} /* -- sr_handle_hwinfo -- */
