source: trunk/server/libcli/nbt/libnbt.h

Last change on this file was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 10.7 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 a raw async NBT library
5
6 Copyright (C) Andrew Tridgell 2005
7
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.
12
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.
17
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/>.
20*/
21
22#ifndef __LIBNBT_H__
23#define __LIBNBT_H__
24
25#include "librpc/gen_ndr/nbt.h"
26#include "librpc/ndr/libndr.h"
27#include "system/network.h"
28/*
29 possible states for pending requests
30*/
31enum nbt_request_state {NBT_REQUEST_SEND,
32 NBT_REQUEST_WAIT,
33 NBT_REQUEST_DONE,
34 NBT_REQUEST_TIMEOUT,
35 NBT_REQUEST_ERROR};
36
37/*
38 a nbt name request
39*/
40struct nbt_name_request {
41 struct nbt_name_request *next, *prev;
42
43 enum nbt_request_state state;
44
45 NTSTATUS status;
46
47 /* the socket this was on */
48 struct nbt_name_socket *nbtsock;
49
50 /* where to send the request */
51 struct socket_address *dest;
52
53 /* timeout between retries */
54 int timeout;
55
56 /* how many retries to send on timeout */
57 int num_retries;
58
59 /* whether we have received a WACK */
60 bool received_wack;
61
62 /* the timeout event */
63 struct tevent_timer *te;
64
65 /* the name transaction id */
66 uint16_t name_trn_id;
67
68 /* is it a reply? */
69 bool is_reply;
70
71 /* the encoded request */
72 DATA_BLOB encoded;
73
74 /* shall we allow multiple replies? */
75 bool allow_multiple_replies;
76
77 unsigned int num_replies;
78 struct nbt_name_reply {
79 struct nbt_name_packet *packet;
80 struct socket_address *dest;
81 } *replies;
82
83 /* information on what to do on completion */
84 struct {
85 void (*fn)(struct nbt_name_request *);
86 void *private_data;
87 } async;
88};
89
90
91
92/*
93 context structure for operations on name queries
94*/
95struct nbt_name_socket {
96 struct socket_context *sock;
97 struct tevent_context *event_ctx;
98
99 /* a queue of requests pending to be sent */
100 struct nbt_name_request *send_queue;
101
102 /* the fd event */
103 struct tevent_fd *fde;
104
105 /* mapping from name_trn_id to pending event */
106 struct idr_context *idr;
107
108 /* how many requests are waiting for a reply */
109 uint16_t num_pending;
110
111 /* what to do with incoming request packets */
112 struct {
113 void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
114 struct socket_address *);
115 void *private_data;
116 } incoming;
117
118 /* what to do with unexpected replies */
119 struct {
120 void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
121 struct socket_address *);
122 void *private_data;
123 } unexpected;
124};
125
126
127/* a simple name query */
128struct nbt_name_query {
129 struct {
130 struct nbt_name name;
131 const char *dest_addr;
132 uint16_t dest_port;
133 bool broadcast;
134 bool wins_lookup;
135 int timeout; /* in seconds */
136 int retries;
137 } in;
138 struct {
139 const char *reply_from;
140 struct nbt_name name;
141 int16_t num_addrs;
142 const char **reply_addrs;
143 } out;
144};
145
146/* a simple name status query */
147struct nbt_name_status {
148 struct {
149 struct nbt_name name;
150 const char *dest_addr;
151 uint16_t dest_port;
152 int timeout; /* in seconds */
153 int retries;
154 } in;
155 struct {
156 const char *reply_from;
157 struct nbt_name name;
158 struct nbt_rdata_status status;
159 } out;
160};
161
162/* a name registration request */
163struct nbt_name_register {
164 struct {
165 struct nbt_name name;
166 const char *dest_addr;
167 uint16_t dest_port;
168 const char *address;
169 uint16_t nb_flags;
170 bool register_demand;
171 bool broadcast;
172 bool multi_homed;
173 uint32_t ttl;
174 int timeout; /* in seconds */
175 int retries;
176 } in;
177 struct {
178 const char *reply_from;
179 struct nbt_name name;
180 const char *reply_addr;
181 uint8_t rcode;
182 } out;
183};
184
185/* a send 3 times then demand name broadcast name registration */
186struct nbt_name_register_bcast {
187 struct {
188 struct nbt_name name;
189 const char *dest_addr;
190 uint16_t dest_port;
191 const char *address;
192 uint16_t nb_flags;
193 uint32_t ttl;
194 } in;
195};
196
197
198/* wins name register with multiple wins servers to try and multiple
199 addresses to register */
200struct nbt_name_register_wins {
201 struct {
202 struct nbt_name name;
203 const char **wins_servers;
204 uint16_t wins_port;
205 const char **addresses;
206 uint16_t nb_flags;
207 uint32_t ttl;
208 } in;
209 struct {
210 const char *wins_server;
211 uint8_t rcode;
212 } out;
213};
214
215
216
217/* a name refresh request */
218struct nbt_name_refresh {
219 struct {
220 struct nbt_name name;
221 const char *dest_addr;
222 uint16_t dest_port;
223 const char *address;
224 uint16_t nb_flags;
225 bool broadcast;
226 uint32_t ttl;
227 int timeout; /* in seconds */
228 int retries;
229 } in;
230 struct {
231 const char *reply_from;
232 struct nbt_name name;
233 const char *reply_addr;
234 uint8_t rcode;
235 } out;
236};
237
238/* wins name refresh with multiple wins servers to try and multiple
239 addresses to register */
240struct nbt_name_refresh_wins {
241 struct {
242 struct nbt_name name;
243 const char **wins_servers;
244 uint16_t wins_port;
245 const char **addresses;
246 uint16_t nb_flags;
247 uint32_t ttl;
248 } in;
249 struct {
250 const char *wins_server;
251 uint8_t rcode;
252 } out;
253};
254
255
256/* a name release request */
257struct nbt_name_release {
258 struct {
259 struct nbt_name name;
260 const char *dest_addr;
261 uint16_t dest_port;
262 const char *address;
263 uint16_t nb_flags;
264 bool broadcast;
265 int timeout; /* in seconds */
266 int retries;
267 } in;
268 struct {
269 const char *reply_from;
270 struct nbt_name name;
271 const char *reply_addr;
272 uint8_t rcode;
273 } out;
274};
275
276struct nbt_name_socket *nbt_name_socket_init(TALLOC_CTX *mem_ctx,
277 struct tevent_context *event_ctx);
278void nbt_name_socket_handle_response_packet(struct nbt_name_request *req,
279 struct nbt_name_packet *packet,
280 struct socket_address *src);
281struct nbt_name_request *nbt_name_query_send(struct nbt_name_socket *nbtsock,
282 struct nbt_name_query *io);
283NTSTATUS nbt_name_query_recv(struct nbt_name_request *req,
284 TALLOC_CTX *mem_ctx, struct nbt_name_query *io);
285NTSTATUS nbt_name_query(struct nbt_name_socket *nbtsock,
286 TALLOC_CTX *mem_ctx, struct nbt_name_query *io);
287struct nbt_name_request *nbt_name_status_send(struct nbt_name_socket *nbtsock,
288 struct nbt_name_status *io);
289NTSTATUS nbt_name_status_recv(struct nbt_name_request *req,
290 TALLOC_CTX *mem_ctx, struct nbt_name_status *io);
291NTSTATUS nbt_name_status(struct nbt_name_socket *nbtsock,
292 TALLOC_CTX *mem_ctx, struct nbt_name_status *io);
293
294NTSTATUS nbt_name_dup(TALLOC_CTX *mem_ctx, struct nbt_name *name, struct nbt_name *newname);
295NTSTATUS nbt_name_to_blob(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, struct nbt_name *name);
296NTSTATUS nbt_name_from_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, struct nbt_name *name);
297void nbt_choose_called_name(TALLOC_CTX *mem_ctx, struct nbt_name *n, const char *name, int type);
298char *nbt_name_string(TALLOC_CTX *mem_ctx, const struct nbt_name *name);
299NTSTATUS nbt_name_register(struct nbt_name_socket *nbtsock,
300 TALLOC_CTX *mem_ctx, struct nbt_name_register *io);
301NTSTATUS nbt_name_refresh(struct nbt_name_socket *nbtsock,
302 TALLOC_CTX *mem_ctx, struct nbt_name_refresh *io);
303NTSTATUS nbt_name_release(struct nbt_name_socket *nbtsock,
304 TALLOC_CTX *mem_ctx, struct nbt_name_release *io);
305NTSTATUS nbt_name_register_wins(struct nbt_name_socket *nbtsock,
306 TALLOC_CTX *mem_ctx,
307 struct nbt_name_register_wins *io);
308NTSTATUS nbt_name_refresh_wins(struct nbt_name_socket *nbtsock,
309 TALLOC_CTX *mem_ctx,
310 struct nbt_name_refresh_wins *io);
311NTSTATUS nbt_name_register_recv(struct nbt_name_request *req,
312 TALLOC_CTX *mem_ctx, struct nbt_name_register *io);
313struct nbt_name_request *nbt_name_register_send(struct nbt_name_socket *nbtsock,
314 struct nbt_name_register *io);
315NTSTATUS nbt_name_release_recv(struct nbt_name_request *req,
316 TALLOC_CTX *mem_ctx, struct nbt_name_release *io);
317
318struct nbt_name_request *nbt_name_release_send(struct nbt_name_socket *nbtsock,
319 struct nbt_name_release *io);
320
321NTSTATUS nbt_name_refresh_recv(struct nbt_name_request *req,
322 TALLOC_CTX *mem_ctx, struct nbt_name_refresh *io);
323
324NTSTATUS nbt_set_incoming_handler(struct nbt_name_socket *nbtsock,
325 void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
326 struct socket_address *),
327 void *private_data);
328NTSTATUS nbt_set_unexpected_handler(struct nbt_name_socket *nbtsock,
329 void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
330 struct socket_address *),
331 void *private_data);
332NTSTATUS nbt_name_reply_send(struct nbt_name_socket *nbtsock,
333 struct socket_address *dest,
334 struct nbt_name_packet *request);
335
336
337NDR_SCALAR_PROTO(wrepl_nbt_name, const struct nbt_name *)
338NDR_SCALAR_PROTO(nbt_string, const char *)
339NDR_BUFFER_PROTO(nbt_name, struct nbt_name)
340NTSTATUS nbt_rcode_to_ntstatus(uint8_t rcode);
341
342struct tevent_context;
343struct tevent_req;
344struct tevent_req *nbt_name_register_bcast_send(TALLOC_CTX *mem_ctx,
345 struct tevent_context *ev,
346 struct nbt_name_socket *nbtsock,
347 struct nbt_name_register_bcast *io);
348NTSTATUS nbt_name_register_bcast_recv(struct tevent_req *req);
349struct tevent_req *nbt_name_register_wins_send(TALLOC_CTX *mem_ctx,
350 struct tevent_context *ev,
351 struct nbt_name_socket *nbtsock,
352 struct nbt_name_register_wins *io);
353NTSTATUS nbt_name_register_wins_recv(struct tevent_req *req,
354 TALLOC_CTX *mem_ctx,
355 struct nbt_name_register_wins *io);
356struct tevent_req *nbt_name_refresh_wins_send(TALLOC_CTX *mem_ctx,
357 struct tevent_context *ev,
358 struct nbt_name_socket *nbtsock,
359 struct nbt_name_refresh_wins *io);
360NTSTATUS nbt_name_refresh_wins_recv(struct tevent_req *req,
361 TALLOC_CTX *mem_ctx,
362 struct nbt_name_refresh_wins *io);
363
364XFILE *startlmhosts(const char *fname);
365bool getlmhostsent(TALLOC_CTX *ctx, XFILE *fp, char **pp_name, int *name_type,
366 struct sockaddr_storage *pss);
367void endlmhosts(XFILE *fp);
368
369NTSTATUS resolve_lmhosts_file_as_sockaddr(const char *lmhosts_file,
370 const char *name, int name_type,
371 TALLOC_CTX *mem_ctx,
372 struct sockaddr_storage **return_iplist,
373 int *return_count);
374
375NTSTATUS resolve_dns_hosts_file_as_sockaddr(const char *dns_hosts_file,
376 const char *name, bool srv_lookup,
377 TALLOC_CTX *mem_ctx,
378 struct sockaddr_storage **return_iplist,
379 int *return_count);
380
381#endif /* __LIBNBT_H__ */
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