2 Unix SMB/CIFS implementation.
6 Copyright (C) Andrew Tridgell 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "nbt_server/nbt_server.h"
24 #include "smbd/service_task.h"
25 #include "lib/socket/socket.h"
26 #include "libcli/resolve/resolve.h"
27 #include "nbt_server/dgram/proto.h"
28 #include "librpc/gen_ndr/ndr_nbt.h"
31 a list of mailslots that we have static handlers for
34 const char *mailslot_name;
35 dgram_mailslot_handler_t handler;
36 } mailslot_handlers[] = {
37 { NBT_MAILSLOT_NETLOGON, nbtd_mailslot_netlogon_handler },
38 { NBT_MAILSLOT_NTLOGON, nbtd_mailslot_ntlogon_handler },
39 { NBT_MAILSLOT_BROWSE, nbtd_mailslot_browse_handler }
43 receive an incoming dgram request. This is used for general datagram
44 requests. Mailslot requests for our listening mailslots
45 are handled in the specific mailslot handlers
47 void dgram_request_handler(struct nbt_dgram_socket *dgmsock,
48 struct nbt_dgram_packet *packet,
49 struct socket_address *src)
51 DEBUG(0,("General datagram request from %s:%d\n", src->addr, src->port));
52 NDR_PRINT_DEBUG(nbt_dgram_packet, packet);
57 setup the port 138 datagram listener for a given interface
59 NTSTATUS nbtd_dgram_setup(struct nbtd_interface *iface, const char *bind_address)
61 struct nbt_dgram_socket *bcast_dgmsock = NULL;
62 struct nbtd_server *nbtsrv = iface->nbtsrv;
63 struct socket_address *bcast_addr, *bind_addr;
65 TALLOC_CTX *tmp_ctx = talloc_new(iface);
66 /* the list of mailslots that we are interested in */
70 return NT_STATUS_NO_MEMORY;
73 if (strcmp("0.0.0.0", iface->netmask) != 0) {
74 /* listen for broadcasts on port 138 */
75 bcast_dgmsock = nbt_dgram_socket_init(iface, nbtsrv->task->event_ctx);
78 return NT_STATUS_NO_MEMORY;
81 bcast_addr = socket_address_from_strings(tmp_ctx, bcast_dgmsock->sock->backend_name,
82 iface->bcast_address, lp_dgram_port());
85 return NT_STATUS_NO_MEMORY;
88 status = socket_listen(bcast_dgmsock->sock, bcast_addr, 0, 0);
89 if (!NT_STATUS_IS_OK(status)) {
91 DEBUG(0,("Failed to bind to %s:%d - %s\n",
92 iface->bcast_address, lp_dgram_port(), nt_errstr(status)));
96 dgram_set_incoming_handler(bcast_dgmsock, dgram_request_handler, iface);
99 /* listen for unicasts on port 138 */
100 iface->dgmsock = nbt_dgram_socket_init(iface, nbtsrv->task->event_ctx);
101 if (!iface->dgmsock) {
102 talloc_free(tmp_ctx);
103 return NT_STATUS_NO_MEMORY;
106 bind_addr = socket_address_from_strings(tmp_ctx, iface->dgmsock->sock->backend_name,
107 bind_address, lp_dgram_port());
109 talloc_free(tmp_ctx);
110 return NT_STATUS_NO_MEMORY;
113 status = socket_listen(iface->dgmsock->sock, bind_addr, 0, 0);
114 if (!NT_STATUS_IS_OK(status)) {
115 talloc_free(tmp_ctx);
116 DEBUG(0,("Failed to bind to %s:%d - %s\n",
117 bind_address, lp_dgram_port(), nt_errstr(status)));
121 dgram_set_incoming_handler(iface->dgmsock, dgram_request_handler, iface);
123 talloc_free(tmp_ctx);
125 for (i=0;i<ARRAY_SIZE(mailslot_handlers);i++) {
126 /* note that we don't need to keep the pointer
127 to the dgmslot around - the callback is all
129 struct dgram_mailslot_handler *dgmslot;
132 dgmslot = dgram_mailslot_listen(bcast_dgmsock,
133 mailslot_handlers[i].mailslot_name,
134 mailslot_handlers[i].handler, iface);
135 NT_STATUS_HAVE_NO_MEMORY(dgmslot);
138 dgmslot = dgram_mailslot_listen(iface->dgmsock,
139 mailslot_handlers[i].mailslot_name,
140 mailslot_handlers[i].handler, iface);
141 NT_STATUS_HAVE_NO_MEMORY(dgmslot);