/*
setup our listening sockets on the configured network interfaces
*/
NTSTATUS nbtd_startup_interfaces(struct nbtd_server *nbtsrv, struct loadparm_context *lp_ctx,
struct interface *ifaces)
{
int num_interfaces = iface_count(ifaces);
int i;
TALLOC_CTX *tmp_ctx = talloc_new(nbtsrv);
NTSTATUS status;
/* if we are allowing incoming packets from any address, then
we also need to bind to the wildcard address */
if (!lp_bind_interfaces_only(lp_ctx)) {
const char *primary_address;
/* the primary address is the address we will return
for non-WINS queries not made on a specific
interface */
if (num_interfaces > 0) {
primary_address = iface_n_ip(ifaces, 0);
} else {
primary_address = inet_ntoa(interpret_addr2(
lp_netbios_name(lp_ctx)));
}
primary_address = talloc_strdup(tmp_ctx, primary_address);
NT_STATUS_HAVE_NO_MEMORY(primary_address);
status = nbtd_add_socket(nbtsrv,
lp_ctx,
"0.0.0.0",
primary_address,
talloc_strdup(tmp_ctx, "255.255.255.255"),
talloc_strdup(tmp_ctx, "0.0.0.0"));
NT_STATUS_NOT_OK_RETURN(status);
}
for (i=0; i<num_interfaces; i++) {
const char *bcast = iface_n_bcast(ifaces, i);
const char *address, *netmask;
/* we can't assume every interface is broadcast capable */
if (bcast == NULL) continue;
address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
bcast = talloc_strdup(tmp_ctx, bcast);
netmask = talloc_strdup(tmp_ctx, iface_n_netmask(ifaces, i));
status = nbtd_add_socket(nbtsrv, lp_ctx,
address, address, bcast, netmask);
NT_STATUS_NOT_OK_RETURN(status);
}
if (lp_wins_server_list(lp_ctx)) {
status = nbtd_add_wins_socket(nbtsrv);
NT_STATUS_NOT_OK_RETURN(status);
}
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
/****************************************************************************
send out one query
****************************************************************************/
static BOOL query_one(char *lookup, unsigned int lookup_type)
{
int j, count, flags;
struct in_addr *ip_list=NULL;
if (got_bcast) {
printf("querying %s on %s\n", lookup, inet_ntoa(bcast_addr));
ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
use_bcast?True:recursion_desired,
bcast_addr,&count, &flags);
} else {
struct in_addr *bcast;
for (j=iface_count() - 1;
!ip_list && j >= 0;
j--) {
bcast = iface_n_bcast(j);
printf("querying %s on %s\n",
lookup, inet_ntoa(*bcast));
ip_list = name_query(ServerFD,lookup,lookup_type,
use_bcast,
use_bcast?True:recursion_desired,
*bcast,&count, &flags);
}
}
if (give_flags)
printf("Flags: %s\n", query_flags(flags));
if (!ip_list) return False;
for (j=0;j<count;j++) {
if (translate_addresses) {
struct hostent *host = gethostbyaddr((char *)&ip_list[j], sizeof(ip_list[j]), AF_INET);
if (host) {
printf("%s, ", host -> h_name);
}
}
printf("%s %s<%02x>\n",inet_ntoa(ip_list[j]),lookup, lookup_type);
}
/* We can only do find_status if the ip address returned
was valid - ie. name_query returned true.
*/
if (find_status) {
do_node_status(ServerFD, lookup, lookup_type, ip_list[0]);
}
safe_free(ip_list);
return (ip_list != NULL);
}
static struct sockaddr_storage *lookup_byname_backend(TALLOC_CTX *mem_ctx,
const char *name,
int *count)
{
struct ip_service *ret = NULL;
struct sockaddr_storage *return_ss = NULL;
int j, i;
NTSTATUS status;
*count = 0;
/* always try with wins first */
if (NT_STATUS_IS_OK(resolve_wins(name,0x20,&ret,count))) {
if ( *count == 0 )
return NULL;
return_ss = TALLOC_ARRAY(mem_ctx, struct sockaddr_storage,
*count);
if (return_ss == NULL ) {
free( ret );
return NULL;
}
/* copy the IP addresses */
for ( i=0; i<(*count); i++ )
return_ss[i] = ret[i].ss;
free( ret );
return return_ss;
}
/* uggh, we have to broadcast to each interface in turn */
for (j=iface_count() - 1;
j >= 0;
j--) {
const struct sockaddr_storage *bcast_ss = iface_n_bcast(j);
if (!bcast_ss) {
continue;
}
status = name_query(name, 0x20, True, True,bcast_ss,
mem_ctx, &return_ss, count, NULL);
if (NT_STATUS_IS_OK(status)) {
break;
}
}
return return_ss;
}
static struct in_addr *lookup_byname_backend(const char *name, int *count)
{
int fd;
struct ip_service *ret = NULL;
struct in_addr *return_ip;
int j, i, flags = 0;
*count = 0;
/* always try with wins first */
if (resolve_wins(name,0x20,&ret,count)) {
if ( count == 0 )
return NULL;
if ( (return_ip = (struct in_addr *)malloc((*count)*sizeof(struct in_addr))) == NULL ) {
free( ret );
return NULL;
}
/* copy the IP addresses */
for ( i=0; i<(*count); i++ )
return_ip[i] = ret[i].ip;
free( ret );
return return_ip;
}
fd = wins_lookup_open_socket_in();
if (fd == -1) {
return NULL;
}
/* uggh, we have to broadcast to each interface in turn */
for (j=iface_count() - 1;
j >= 0;
j--) {
struct in_addr *bcast = iface_n_bcast(j);
return_ip = name_query(fd,name,0x20,True,True,*bcast,count, &flags, NULL);
if (return_ip) break;
}
close(fd);
return return_ip;
}
static struct in_addr *lookup_byname_backend(const char *name, int *count)
{
int fd;
struct in_addr *ret = NULL;
struct in_addr p;
int j, flags;
*count = 0;
fd = wins_lookup_open_socket_in();
if (fd == -1)
return NULL;
p = wins_srv_ip();
if( !is_zero_ip(p) ) {
ret = name_query(fd,name,0x20,False,True, p, count, &flags);
goto out;
}
if (lp_wins_support()) {
/* we are our own WINS server */
ret = name_query(fd,name,0x20,False,True, *interpret_addr2("127.0.0.1"), count, &flags);
goto out;
}
/* uggh, we have to broadcast to each interface in turn */
for (j=iface_count() - 1;
j >= 0;
j--) {
struct in_addr *bcast = iface_n_bcast(j);
ret = name_query(fd,name,0x20,True,True,*bcast,count, &flags);
if (ret) break;
}
out:
close(fd);
return ret;
}
static bool process_one(struct loadparm_context *lp_ctx, struct tevent_context *ev,
struct interface *ifaces, const char *name, int nbt_port)
{
TALLOC_CTX *tmp_ctx = talloc_new(NULL);
enum nbt_name_type node_type = NBT_NAME_CLIENT;
char *node_name, *p;
struct socket_address *all_zero_addr;
struct nbt_name_socket *nbtsock;
NTSTATUS status = NT_STATUS_OK;
bool ret = true;
if (!options.case_sensitive) {
name = strupper_talloc(tmp_ctx, name);
}
if (options.find_master) {
node_type = NBT_NAME_MASTER;
if (*name == '-' || *name == '_') {
name = "\01\02__MSBROWSE__\02";
node_type = NBT_NAME_MS;
}
}
p = strchr(name, '#');
if (p) {
node_name = talloc_strndup(tmp_ctx, name, PTR_DIFF(p,name));
node_type = (enum nbt_name_type)strtol(p+1, NULL, 16);
} else {
node_name = talloc_strdup(tmp_ctx, name);
}
nbtsock = nbt_name_socket_init(tmp_ctx, ev, lp_iconv_convenience(lp_ctx));
if (options.root_port) {
all_zero_addr = socket_address_from_strings(tmp_ctx, nbtsock->sock->backend_name,
"0.0.0.0", NBT_NAME_SERVICE_PORT);
if (!all_zero_addr) {
talloc_free(tmp_ctx);
return false;
}
status = socket_listen(nbtsock->sock, all_zero_addr, 0, 0);
if (!NT_STATUS_IS_OK(status)) {
printf("Failed to bind to local port 137 - %s\n", nt_errstr(status));
talloc_free(tmp_ctx);
return false;
}
}
if (options.lookup_by_ip) {
ret = do_node_status(nbtsock, name, nbt_port);
talloc_free(tmp_ctx);
return ret;
}
if (options.broadcast_address) {
status = do_node_query(nbtsock, options.broadcast_address, nbt_port,
node_name, node_type, true);
} else if (options.unicast_address) {
status = do_node_query(nbtsock, options.unicast_address,
nbt_port, node_name, node_type, false);
} else {
int i, num_interfaces;
num_interfaces = iface_count(ifaces);
for (i=0;i<num_interfaces;i++) {
const char *bcast = iface_n_bcast(ifaces, i);
if (bcast == NULL) continue;
status = do_node_query(nbtsock, bcast, nbt_port,
node_name, node_type, true);
if (NT_STATUS_IS_OK(status)) break;
}
}
if (!NT_STATUS_IS_OK(status)) {
printf("Lookup failed - %s\n", nt_errstr(status));
ret = false;
}
talloc_free(tmp_ctx);
return ret;
}