2 Unix SMB/CIFS implementation.
4 server side dcerpc defines
6 Copyright (C) Andrew Tridgell 2003-2005
7 Copyright (C) Stefan (metze) Metzmacher 2004-2005
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #ifndef SAMBA_DCERPC_SERVER_H
24 #define SAMBA_DCERPC_SERVER_H
26 #include "librpc/gen_ndr/server_id.h"
27 #include "librpc/rpc/dcerpc.h"
28 #include "librpc/ndr/libndr.h"
30 /* modules can use the following to determine if the interface has changed
31 * please increment the version number after each interface change
32 * with a comment and maybe update struct dcesrv_critical_sizes.
34 /* version 1 - initial version - metze */
35 #define DCERPC_MODULE_VERSION 1
37 struct dcesrv_connection;
38 struct dcesrv_call_state;
40 struct dcesrv_connection_context;
42 struct dcesrv_interface {
44 struct ndr_syntax_id syntax_id;
46 /* this function is called when the client binds to this interface */
47 NTSTATUS (*bind)(struct dcesrv_call_state *, const struct dcesrv_interface *, uint32_t if_version);
49 /* this function is called when the client disconnects the endpoint */
50 void (*unbind)(struct dcesrv_connection_context *, const struct dcesrv_interface *);
52 /* the ndr_pull function for the chosen interface.
54 NTSTATUS (*ndr_pull)(struct dcesrv_call_state *, TALLOC_CTX *, struct ndr_pull *, void **);
56 /* the dispatch function for the chosen interface.
58 NTSTATUS (*dispatch)(struct dcesrv_call_state *, TALLOC_CTX *, void *);
60 /* the reply function for the chosen interface.
62 NTSTATUS (*reply)(struct dcesrv_call_state *, TALLOC_CTX *, void *);
64 /* the ndr_push function for the chosen interface.
66 NTSTATUS (*ndr_push)(struct dcesrv_call_state *, TALLOC_CTX *, struct ndr_push *, const void *);
68 /* for any private use by the interface code */
69 const void *private_data;
74 #define DCESRV_INTERFACE_FLAGS_HANDLES_NOT_USED 0x00000001
76 enum dcesrv_call_list {
78 DCESRV_LIST_CALL_LIST,
79 DCESRV_LIST_FRAGMENTED_CALL_LIST,
80 DCESRV_LIST_PENDING_CALL_LIST
83 struct data_blob_list_item {
84 struct data_blob_list_item *prev,*next;
88 /* the state of an ongoing dcerpc call */
89 struct dcesrv_call_state {
90 struct dcesrv_call_state *next, *prev;
91 struct dcesrv_auth *auth_state;
92 struct dcesrv_connection *conn;
93 struct dcesrv_connection_context *context;
94 struct ncacn_packet pkt;
97 * Used during async bind/alter_context.
99 struct ncacn_packet ack_pkt;
102 which list this request is in, if any
104 enum dcesrv_call_list list;
106 /* the backend can mark the call
107 * with DCESRV_CALL_STATE_FLAG_ASYNC
108 * that will cause the frontend to not touch r->out
111 * this is only allowed to the backend when DCESRV_CALL_STATE_FLAG_MAY_ASYNC
112 * is alerady set by the frontend
114 * the backend then needs to call dcesrv_reply() when it's
115 * ready to send the reply
117 #define DCESRV_CALL_STATE_FLAG_ASYNC (1<<0)
118 #define DCESRV_CALL_STATE_FLAG_MAY_ASYNC (1<<1)
119 #define DCESRV_CALL_STATE_FLAG_MULTIPLEXED (1<<3)
120 #define DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL (1<<4)
121 uint32_t state_flags;
123 /* the time the request arrived in the server */
126 /* the backend can use this event context for async replies */
127 struct tevent_context *event_ctx;
129 /* the message_context that will be used for async replies */
130 struct imessaging_context *msg_ctx;
132 /* this is the pointer to the allocated function struct */
136 * that's the ndr pull context used in dcesrv_request()
137 * needed by dcesrv_reply() to carry over information
138 * for full pointer support.
140 struct ndr_pull *ndr_pull;
144 struct data_blob_list_item *replies;
146 /* this is used by the boilerplate code to generate DCERPC faults */
149 /* the reason why we terminate the connection after sending a response */
150 const char *terminate_reason;
152 /* temporary auth_info fields */
153 struct dcerpc_auth in_auth_info;
154 struct dcerpc_auth _out_auth_info;
155 struct dcerpc_auth *out_auth_info;
161 * The various handles that are used in the RPC servers should be
162 * created and fetch using the dcesrv_handle_* functions.
165 * dcesrv_handle_create(struct dcesrv_call_state \*, uint8 handle_type)
166 * to obtain a new handle of the specified type. Handle types are
167 * unique within each pipe.
169 * The handle can later be fetched again using:
171 * struct dcesrv_handle *dcesrv_handle_lookup(
172 * struct dcesrv_call_state *dce_call,
173 * struct policy_handle *p,
178 * TALLOC_FREE(struct dcesrv_handle *).
180 * User data should be stored in the 'data' member of the dcesrv_handle
184 #define DCESRV_HANDLE_ANY 255
186 /* a dcerpc handle in internal format */
187 struct dcesrv_handle {
188 struct dcesrv_handle *next, *prev;
189 struct dcesrv_assoc_group *assoc_group;
190 struct policy_handle wire_handle;
192 const struct dcesrv_interface *iface;
196 /* hold the authentication state information */
198 enum dcerpc_AuthType auth_type;
199 enum dcerpc_AuthLevel auth_level;
200 uint32_t auth_context_id;
201 struct gensec_security *gensec_security;
202 struct auth_session_info *session_info;
203 NTSTATUS (*session_key_fn)(struct dcesrv_auth *, DATA_BLOB *session_key);
204 bool client_hdr_signing;
211 struct dcesrv_connection_context {
212 struct dcesrv_connection_context *next, *prev;
215 /* the connection this is on */
216 struct dcesrv_connection *conn;
218 /* the ndr function table for the chosen interface */
219 const struct dcesrv_interface *iface;
221 /* private data for the interface implementation */
225 * the minimum required auth level for this interface
227 enum dcerpc_AuthLevel min_auth_level;
230 /* the negotiated transfer syntax */
231 struct ndr_syntax_id transfer_syntax;
235 /* the state associated with a dcerpc server connection */
236 struct dcesrv_connection {
237 /* for the broken_connections DLIST */
238 struct dcesrv_connection *prev, *next;
240 /* the top level context for this server */
241 struct dcesrv_context *dce_ctx;
243 /* the endpoint that was opened */
244 const struct dcesrv_endpoint *endpoint;
246 /* a list of established context_ids */
247 struct dcesrv_connection_context *contexts;
249 /* the state of the current incoming call fragments */
250 struct dcesrv_call_state *incoming_fragmented_call_list;
252 /* the state of the async pending calls */
253 struct dcesrv_call_state *pending_call_list;
255 /* the state of the current outgoing calls */
256 struct dcesrv_call_state *call_list;
258 /* the maximum size the client wants to receive */
259 uint16_t max_recv_frag;
260 uint16_t max_xmit_frag;
262 DATA_BLOB partial_input;
264 /* the event_context that will be used for this connection */
265 struct tevent_context *event_ctx;
267 /* the message_context that will be used for this connection */
268 struct imessaging_context *msg_ctx;
270 /* the server_id that will be used for this connection */
271 struct server_id server_id;
273 /* is this connection pending termination? If so, why? */
274 const char *terminate;
276 const char *packet_log_dir;
278 /* this is the default state_flags for dcesrv_call_state structs */
279 uint32_t state_flags;
283 void (*report_output_data)(struct dcesrv_connection *);
286 struct tstream_context *stream;
287 struct tevent_queue *send_queue;
289 const struct tsocket_address *local_address;
290 const struct tsocket_address *remote_address;
292 /* the current authentication state */
293 struct dcesrv_auth *default_auth_state;
296 * remember which pdu types are allowed
301 /* the association group the connection belongs to */
302 struct dcesrv_assoc_group *assoc_group;
304 /* The maximum total payload of reassembled request pdus */
305 size_t max_total_request_size;
308 * Our preferred transfer syntax.
310 const struct ndr_syntax_id *preferred_transfer;
312 /* the negotiated bind time features */
313 uint16_t bind_time_features;
316 * This is used to block the connection during
317 * pending authentication.
319 struct tevent_req *(*wait_send)(TALLOC_CTX *mem_ctx,
320 struct tevent_context *ev,
322 NTSTATUS (*wait_recv)(struct tevent_req *req);
327 struct dcesrv_endpoint_server {
328 /* this is the name of the endpoint server */
331 /* this function should register endpoints and some other setup stuff,
332 * it is called when the dcesrv_context gets initialized.
334 NTSTATUS (*init_server)(struct dcesrv_context *, const struct dcesrv_endpoint_server *);
336 /* this function can be used by other endpoint servers to
337 * ask for a dcesrv_interface implementation
338 * - iface must be reference to an already existing struct !
340 bool (*interface_by_uuid)(struct dcesrv_interface *iface, const struct GUID *, uint32_t);
342 /* this function can be used by other endpoint servers to
343 * ask for a dcesrv_interface implementation
344 * - iface must be reference to an already existeng struct !
346 bool (*interface_by_name)(struct dcesrv_interface *iface, const char *);
350 /* one association groups */
351 struct dcesrv_assoc_group {
355 /* list of handles in this association group */
356 struct dcesrv_handle *handles;
359 struct dcesrv_context *dce_ctx;
361 /* Remote association group ID (if proxied) */
365 /* server-wide context information for the dcerpc server */
366 struct dcesrv_context {
368 * The euid at startup time.
370 * This is required for DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM
374 /* the list of endpoints that have registered
375 * by the configured endpoint servers
377 struct dcesrv_endpoint {
378 struct dcesrv_endpoint *next, *prev;
379 /* the type and location of the endpoint */
380 struct dcerpc_binding *ep_description;
381 /* the security descriptor for smb named pipes */
382 struct security_descriptor *sd;
383 /* the list of interfaces available on this endpoint */
384 struct dcesrv_if_list {
385 struct dcesrv_if_list *next, *prev;
386 struct dcesrv_interface iface;
390 * Should this service be run in a single process (so far only
391 * NETLOGON is not run in a single process)
393 bool use_single_process;
396 /* loadparm context to use for this connection */
397 struct loadparm_context *lp_ctx;
399 struct idr_context *assoc_groups_idr;
401 struct dcesrv_connection *broken_connections;
404 /* this structure is used by modules to determine the size of some critical types */
405 struct dcesrv_critical_sizes {
406 int interface_version;
407 int sizeof_dcesrv_context;
408 int sizeof_dcesrv_endpoint;
409 int sizeof_dcesrv_endpoint_server;
410 int sizeof_dcesrv_interface;
411 int sizeof_dcesrv_if_list;
412 int sizeof_dcesrv_connection;
413 int sizeof_dcesrv_call_state;
414 int sizeof_dcesrv_auth;
415 int sizeof_dcesrv_handle;
420 NTSTATUS dcesrv_interface_register(struct dcesrv_context *dce_ctx,
422 const struct dcesrv_interface *iface,
423 const struct security_descriptor *sd);
424 NTSTATUS dcerpc_register_ep_server(const struct dcesrv_endpoint_server *ep_server);
425 NTSTATUS dcesrv_init_context(TALLOC_CTX *mem_ctx,
426 struct loadparm_context *lp_ctx,
427 const char **endpoint_servers, struct dcesrv_context **_dce_ctx);
429 NTSTATUS dcesrv_reply(struct dcesrv_call_state *call);
430 struct dcesrv_handle *dcesrv_handle_create(struct dcesrv_call_state *call,
431 uint8_t handle_type);
433 struct dcesrv_handle *dcesrv_handle_lookup(struct dcesrv_call_state *call,
434 const struct policy_handle *p,
435 uint8_t handle_type);
437 const struct tsocket_address *dcesrv_connection_get_local_address(struct dcesrv_connection *conn);
438 const struct tsocket_address *dcesrv_connection_get_remote_address(struct dcesrv_connection *conn);
441 * Fetch the authentication session key if available.
443 * This is the key generated by a gensec authentication.
445 NTSTATUS dcesrv_auth_session_key(struct dcesrv_call_state *call,
446 DATA_BLOB *session_key);
449 * Fetch the transport session key if available.
450 * Typically this is the SMB session key
451 * or a fixed key for local transports.
453 * The key is always truncated to 16 bytes.
455 NTSTATUS dcesrv_transport_session_key(struct dcesrv_call_state *call,
456 DATA_BLOB *session_key);
458 /* a useful macro for generating a RPC fault in the backend code */
459 #define DCESRV_FAULT(code) do { \
460 dce_call->fault_code = code; \
461 return r->out.result; \
464 /* a useful macro for generating a RPC fault in the backend code */
465 #define DCESRV_FAULT_VOID(code) do { \
466 dce_call->fault_code = code; \
470 /* a useful macro for checking the validity of a dcerpc policy handle
471 and giving the right fault code if invalid */
472 #define DCESRV_CHECK_HANDLE(h) do {if (!(h)) DCESRV_FAULT(DCERPC_FAULT_CONTEXT_MISMATCH); } while (0)
474 /* this checks for a valid policy handle, and gives a fault if an
475 invalid handle or retval if the handle is of the
477 #define DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, retval) do { \
478 (h) = dcesrv_handle_lookup(dce_call, (inhandle), DCESRV_HANDLE_ANY); \
479 DCESRV_CHECK_HANDLE(h); \
480 if ((t) != DCESRV_HANDLE_ANY && (h)->wire_handle.handle_type != (t)) { \
485 /* this checks for a valid policy handle and gives a dcerpc fault
486 if its the wrong type of handle */
487 #define DCESRV_PULL_HANDLE_FAULT(h, inhandle, t) do { \
488 (h) = dcesrv_handle_lookup(dce_call, (inhandle), t); \
489 DCESRV_CHECK_HANDLE(h); \
492 #define DCESRV_PULL_HANDLE(h, inhandle, t) DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, NT_STATUS_INVALID_HANDLE)
493 #define DCESRV_PULL_HANDLE_WERR(h, inhandle, t) DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, WERR_INVALID_HANDLE)
495 NTSTATUS dcesrv_add_ep(struct dcesrv_context *dce_ctx,
496 struct loadparm_context *lp_ctx,
497 struct dcesrv_endpoint *e,
498 struct tevent_context *event_ctx,
499 const struct model_ops *model_ops,
500 void *process_context);
503 * retrieve credentials from a dce_call
505 _PUBLIC_ struct cli_credentials *dcesrv_call_credentials(struct dcesrv_call_state *dce_call);
508 * returns true if this is an authenticated call
510 _PUBLIC_ bool dcesrv_call_authenticated(struct dcesrv_call_state *dce_call);
513 * retrieve account_name for a dce_call
515 _PUBLIC_ const char *dcesrv_call_account_name(struct dcesrv_call_state *dce_call);
518 * retrieve session_info from a dce_call
520 _PUBLIC_ struct auth_session_info *dcesrv_call_session_info(struct dcesrv_call_state *dce_call);
523 * retrieve auth type/level from a dce_call
525 _PUBLIC_ void dcesrv_call_auth_info(struct dcesrv_call_state *dce_call,
526 enum dcerpc_AuthType *auth_type,
527 enum dcerpc_AuthLevel *auth_level);
529 _PUBLIC_ NTSTATUS dcesrv_interface_bind_require_integrity(struct dcesrv_call_state *dce_call,
530 const struct dcesrv_interface *iface);
531 _PUBLIC_ NTSTATUS dcesrv_interface_bind_require_privacy(struct dcesrv_call_state *dce_call,
532 const struct dcesrv_interface *iface);
533 _PUBLIC_ NTSTATUS dcesrv_interface_bind_reject_connect(struct dcesrv_call_state *dce_call,
534 const struct dcesrv_interface *iface);
535 _PUBLIC_ NTSTATUS dcesrv_interface_bind_allow_connect(struct dcesrv_call_state *dce_call,
536 const struct dcesrv_interface *iface);
538 #endif /* SAMBA_DCERPC_SERVER_H */