static void
add_host( const uint8_t *mac, const uint32_t ip, const uint64_t dpid, const uint16_t port ) {
host_entry *entry;
struct in_addr addr;
addr.s_addr = htonl( ip );
entry = lookup_host( ip );
if ( entry != NULL ) {
debug( "Updating a host entry (mac = %02x:%02x:%02x:%02x:%02x:%02x, "
"ip = %s, dpid = %#" PRIx64 ", port = %u).",
mac[ 0 ], mac[ 1 ], mac[ 2 ], mac[ 3 ], mac[ 4 ], mac[ 5 ],
inet_ntoa( addr ), dpid, port );
memcpy( entry->mac, mac, ETH_ADDRLEN );
entry->dpid = dpid;
entry->port = port;
entry->updated_at = time( NULL );
return;
}
debug( "Adding a host entry (mac = %02x:%02x:%02x:%02x:%02x:%02x, "
"ip = %s, dpid = %#" PRIx64 ", port = %u).",
mac[ 0 ], mac[ 1 ], mac[ 2 ], mac[ 3 ], mac[ 4 ], mac[ 5 ],
inet_ntoa( addr ), dpid, port );
entry = xmalloc( sizeof( host_entry ) );
memcpy( entry->mac, mac, ETH_ADDRLEN );
entry->ip = ip;
entry->dpid = dpid;
entry->port = port;
entry->updated_at = time( NULL );
insert_hash_entry( host_db, &entry->ip, entry );
add_host_route( entry->ip );
}
int register_static_ip(int net_fd, int ip, char *devname)
{
char *buffer;
int nread;
// Static IP
buffer = malloc(100);
struct ip_header *iphdr = (struct ip_header*)buffer;
memset(buffer,0,100);
iphdr->vers = 0x45;
iphdr->ip_header_len = 20;
iphdr->ttl = 64;
iphdr->source_ip = ip;
if(cwrite(net_fd, buffer, 20) <= 0)
{
printf("error: write failed while requesting static IP address from server.\n");
exit(1);
}
nread = cread(net_fd, buffer, 100) ;
if(nread == 0)
{
// Connection closed while trying to assign a statick IP. This means that someone else already has that address.
fprintf(stderr, "ERROR: Requested static IP address already in use.\n");
exit(0);
}
set_ip(devname, ntohl(iphdr->dest_ip), 0xffff0000);
if(add_host_route(devname, (in_addr_t)ntohl(iphdr->dest_ip)) < 0)
printf("add_host_route returned\n");
// Set the interface address.
free(buffer) ;
return 0;
}
int __connman_connection_gateway_add(struct connman_service *service,
const char *gateway,
enum connman_ipconfig_type type,
const char *peer)
{
struct gateway_data *active_gateway = NULL;
struct gateway_data *new_gateway = NULL;
enum connman_ipconfig_type type4 = CONNMAN_IPCONFIG_TYPE_UNKNOWN,
type6 = CONNMAN_IPCONFIG_TYPE_UNKNOWN;
enum connman_service_type service_type =
connman_service_get_type(service);
int index;
index = __connman_service_get_index(service);
/*
* If gateway is NULL, it's a point to point link and the default
* gateway for ipv4 is 0.0.0.0 and for ipv6 is ::, meaning the
* interface
*/
if (!gateway && type == CONNMAN_IPCONFIG_TYPE_IPV4)
gateway = "0.0.0.0";
if (!gateway && type == CONNMAN_IPCONFIG_TYPE_IPV6)
gateway = "::";
DBG("service %p index %d gateway %s vpn ip %s type %d",
service, index, gateway, peer, type);
new_gateway = add_gateway(service, index, gateway, type);
if (!new_gateway)
return -EINVAL;
active_gateway = find_active_gateway();
DBG("active %p index %d new %p", active_gateway,
active_gateway ? active_gateway->index : -1, new_gateway);
if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
new_gateway->ipv4_gateway) {
add_host_route(AF_INET, index, gateway, service_type);
__connman_service_nameserver_add_routes(service,
new_gateway->ipv4_gateway->gateway);
type4 = CONNMAN_IPCONFIG_TYPE_IPV4;
}
if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
new_gateway->ipv6_gateway) {
add_host_route(AF_INET6, index, gateway, service_type);
__connman_service_nameserver_add_routes(service,
new_gateway->ipv6_gateway->gateway);
type6 = CONNMAN_IPCONFIG_TYPE_IPV6;
}
if (service_type == CONNMAN_SERVICE_TYPE_VPN) {
set_vpn_routes(new_gateway, service, gateway, type, peer,
active_gateway);
} else {
if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
new_gateway->ipv4_gateway)
new_gateway->ipv4_gateway->vpn = false;
if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
new_gateway->ipv6_gateway)
new_gateway->ipv6_gateway->vpn = false;
}
if (!active_gateway) {
set_default_gateway(new_gateway, type);
goto done;
}
if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
new_gateway->ipv4_gateway &&
new_gateway->ipv4_gateway->vpn) {
if (!__connman_service_is_split_routing(new_gateway->service))
connman_inet_clear_gateway_address(
active_gateway->index,
active_gateway->ipv4_gateway->gateway);
}
if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
new_gateway->ipv6_gateway &&
new_gateway->ipv6_gateway->vpn) {
if (!__connman_service_is_split_routing(new_gateway->service))
connman_inet_clear_ipv6_gateway_address(
active_gateway->index,
active_gateway->ipv6_gateway->gateway);
}
done:
if (type4 == CONNMAN_IPCONFIG_TYPE_IPV4)
__connman_service_ipconfig_indicate_state(service,
CONNMAN_SERVICE_STATE_READY,
CONNMAN_IPCONFIG_TYPE_IPV4);
if (type6 == CONNMAN_IPCONFIG_TYPE_IPV6)
__connman_service_ipconfig_indicate_state(service,
CONNMAN_SERVICE_STATE_READY,
CONNMAN_IPCONFIG_TYPE_IPV6);
return 0;
}
