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;
41 struct dcesrv_iface_state;
43 struct dcesrv_interface {
45 struct ndr_syntax_id syntax_id;
47 /* this function is called when the client binds to this interface */
48 NTSTATUS (*bind)(struct dcesrv_connection_context *, const struct dcesrv_interface *);
50 /* this function is called when the client disconnects the endpoint */
51 void (*unbind)(struct dcesrv_connection_context *, const struct dcesrv_interface *);
53 /* the ndr_pull function for the chosen interface.
55 NTSTATUS (*ndr_pull)(struct dcesrv_call_state *, TALLOC_CTX *, struct ndr_pull *, void **);
57 /* the dispatch function for the chosen interface.
59 NTSTATUS (*dispatch)(struct dcesrv_call_state *, TALLOC_CTX *, void *);
61 /* the reply function for the chosen interface.
63 NTSTATUS (*reply)(struct dcesrv_call_state *, TALLOC_CTX *, void *);
65 /* the ndr_push function for the chosen interface.
67 NTSTATUS (*ndr_push)(struct dcesrv_call_state *, TALLOC_CTX *, struct ndr_push *, const void *);
69 /* for any private use by the interface code */
70 const void *private_data;
75 #define DCESRV_INTERFACE_FLAGS_HANDLES_NOT_USED 0x00000001
77 enum dcesrv_call_list {
79 DCESRV_LIST_CALL_LIST,
80 DCESRV_LIST_FRAGMENTED_CALL_LIST,
81 DCESRV_LIST_PENDING_CALL_LIST
84 struct data_blob_list_item {
85 struct data_blob_list_item *prev,*next;
89 /* the state of an ongoing dcerpc call */
90 struct dcesrv_call_state {
91 struct dcesrv_call_state *next, *prev;
92 struct dcesrv_auth *auth_state;
93 struct dcesrv_connection *conn;
94 struct dcesrv_connection_context *context;
95 struct ncacn_packet pkt;
98 * Used during async bind/alter_context.
100 struct ncacn_packet ack_pkt;
103 which list this request is in, if any
105 enum dcesrv_call_list list;
107 /* the backend can mark the call
108 * with DCESRV_CALL_STATE_FLAG_ASYNC
109 * that will cause the frontend to not touch r->out
112 * this is only allowed to the backend when DCESRV_CALL_STATE_FLAG_MAY_ASYNC
113 * is alerady set by the frontend
115 * the backend then needs to call dcesrv_reply() when it's
116 * ready to send the reply
118 #define DCESRV_CALL_STATE_FLAG_ASYNC (1<<0)
119 #define DCESRV_CALL_STATE_FLAG_MAY_ASYNC (1<<1)
120 #define DCESRV_CALL_STATE_FLAG_MULTIPLEXED (1<<3)
121 #define DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL (1<<4)
122 uint32_t state_flags;
124 /* the time the request arrived in the server */
127 /* the backend can use this event context for async replies */
128 struct tevent_context *event_ctx;
130 /* the message_context that will be used for async replies */
131 struct imessaging_context *msg_ctx;
133 /* this is the pointer to the allocated function struct */
137 * that's the ndr pull context used in dcesrv_request()
138 * needed by dcesrv_reply() to carry over information
139 * for full pointer support.
141 struct ndr_pull *ndr_pull;
145 struct data_blob_list_item *replies;
147 /* this is used by the boilerplate code to generate DCERPC faults */
150 /* the reason why we terminate the connection after sending a response */
151 const char *terminate_reason;
153 /* temporary auth_info fields */
154 struct dcerpc_auth in_auth_info;
155 struct dcerpc_auth _out_auth_info;
156 struct dcerpc_auth *out_auth_info;
162 * The various handles that are used in the RPC servers should be
163 * created and fetch using the dcesrv_handle_* functions.
166 * dcesrv_handle_create(struct dcesrv_call_state \*, uint8 handle_type)
167 * to obtain a new handle of the specified type. Handle types are
168 * unique within each pipe.
170 * The handle can later be fetched again using:
172 * struct dcesrv_handle *dcesrv_handle_lookup(
173 * struct dcesrv_call_state *dce_call,
174 * struct policy_handle *p,
179 * TALLOC_FREE(struct dcesrv_handle *).
181 * User data should be stored in the 'data' member of the dcesrv_handle
185 #define DCESRV_HANDLE_ANY 255
187 /* a dcerpc handle in internal format */
188 struct dcesrv_handle {
189 struct dcesrv_handle *next, *prev;
190 struct dcesrv_assoc_group *assoc_group;
191 struct policy_handle wire_handle;
193 enum dcerpc_AuthLevel min_auth_level;
194 const struct dcesrv_interface *iface;
198 /* hold the authentication state information */
200 enum dcerpc_AuthType auth_type;
201 enum dcerpc_AuthLevel auth_level;
202 uint32_t auth_context_id;
203 struct gensec_security *gensec_security;
204 struct auth_session_info *session_info;
205 NTSTATUS (*session_key_fn)(struct dcesrv_auth *, DATA_BLOB *session_key);
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;
222 * the minimum required auth level for this interface
224 enum dcerpc_AuthLevel min_auth_level;
227 /* the negotiated transfer syntax */
228 struct ndr_syntax_id transfer_syntax;
232 /* the state associated with a dcerpc server connection */
233 struct dcesrv_connection {
234 /* for the broken_connections DLIST */
235 struct dcesrv_connection *prev, *next;
237 /* the top level context for this server */
238 struct dcesrv_context *dce_ctx;
240 /* the endpoint that was opened */
241 const struct dcesrv_endpoint *endpoint;
243 /* a list of established context_ids */
244 struct dcesrv_connection_context *contexts;
246 /* the state of the current incoming call fragments */
247 struct dcesrv_call_state *incoming_fragmented_call_list;
249 /* the state of the async pending calls */
250 struct dcesrv_call_state *pending_call_list;
252 /* the state of the current outgoing calls */
253 struct dcesrv_call_state *call_list;
255 /* the maximum size the client wants to receive */
256 uint16_t max_recv_frag;
257 uint16_t max_xmit_frag;
259 DATA_BLOB partial_input;
261 /* the event_context that will be used for this connection */
262 struct tevent_context *event_ctx;
264 /* the message_context that will be used for this connection */
265 struct imessaging_context *msg_ctx;
267 /* the server_id that will be used for this connection */
268 struct server_id server_id;
270 /* is this connection pending termination? If so, why? */
271 const char *terminate;
273 const char *packet_log_dir;
275 /* this is the default state_flags for dcesrv_call_state structs */
276 uint32_t state_flags;
280 void (*report_output_data)(struct dcesrv_connection *);
283 struct tstream_context *stream;
284 struct tevent_queue *send_queue;
286 const struct tsocket_address *local_address;
287 const struct tsocket_address *remote_address;
289 /* the current authentication state */
290 struct dcesrv_auth *default_auth_state;
291 bool client_hdr_signing;
292 bool support_hdr_signing;
293 bool negotiated_hdr_signing;
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;
313 * This is used to block the connection during
314 * pending authentication.
316 struct tevent_req *(*wait_send)(TALLOC_CTX *mem_ctx,
317 struct tevent_context *ev,
319 NTSTATUS (*wait_recv)(struct tevent_req *req);
324 struct dcesrv_endpoint_server {
325 /* this is the name of the endpoint server */
328 /* this function should register endpoints and some other setup stuff,
329 * it is called when the dcesrv_context gets initialized.
331 NTSTATUS (*init_server)(struct dcesrv_context *, const struct dcesrv_endpoint_server *);
333 /* this function can be used by other endpoint servers to
334 * ask for a dcesrv_interface implementation
335 * - iface must be reference to an already existing struct !
337 bool (*interface_by_uuid)(struct dcesrv_interface *iface, const struct GUID *, uint32_t);
339 /* this function can be used by other endpoint servers to
340 * ask for a dcesrv_interface implementation
341 * - iface must be reference to an already existeng struct !
343 bool (*interface_by_name)(struct dcesrv_interface *iface, const char *);
347 /* one association groups */
348 struct dcesrv_assoc_group {
352 /* The transport this is valid on */
353 enum dcerpc_transport_t transport;
355 /* list of handles in this association group */
356 struct dcesrv_handle *handles;
359 * list of iface states per assoc/conn
361 struct dcesrv_iface_state *iface_states;
364 struct dcesrv_context *dce_ctx;
366 /* the negotiated bind time features */
367 uint16_t bind_time_features;
370 /* server-wide context information for the dcerpc server */
371 struct dcesrv_context {
373 * The euid at startup time.
375 * This is required for DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM
379 /* the list of endpoints that have registered
380 * by the configured endpoint servers
382 struct dcesrv_endpoint {
383 struct dcesrv_endpoint *next, *prev;
384 /* the type and location of the endpoint */
385 struct dcerpc_binding *ep_description;
386 /* the secondary endpoint description for the BIND_ACK */
387 struct dcerpc_binding *ep_2nd_description;
388 /* the security descriptor for smb named pipes */
389 struct security_descriptor *sd;
390 /* the list of interfaces available on this endpoint */
391 struct dcesrv_if_list {
392 struct dcesrv_if_list *next, *prev;
393 struct dcesrv_interface iface;
397 * Should this service be run in a single process (so far only
398 * NETLOGON is not run in a single process)
400 bool use_single_process;
403 /* loadparm context to use for this connection */
404 struct loadparm_context *lp_ctx;
406 struct idr_context *assoc_groups_idr;
408 struct dcesrv_connection *broken_connections;
411 /* this structure is used by modules to determine the size of some critical types */
412 struct dcesrv_critical_sizes {
413 int interface_version;
414 int sizeof_dcesrv_context;
415 int sizeof_dcesrv_endpoint;
416 int sizeof_dcesrv_endpoint_server;
417 int sizeof_dcesrv_interface;
418 int sizeof_dcesrv_if_list;
419 int sizeof_dcesrv_connection;
420 int sizeof_dcesrv_call_state;
421 int sizeof_dcesrv_auth;
422 int sizeof_dcesrv_handle;
427 NTSTATUS dcesrv_interface_register(struct dcesrv_context *dce_ctx,
429 const char *ncacn_np_secondary_endpoint,
430 const struct dcesrv_interface *iface,
431 const struct security_descriptor *sd);
432 NTSTATUS dcerpc_register_ep_server(const struct dcesrv_endpoint_server *ep_server);
433 NTSTATUS dcesrv_init_context(TALLOC_CTX *mem_ctx,
434 struct loadparm_context *lp_ctx,
435 const char **endpoint_servers, struct dcesrv_context **_dce_ctx);
437 NTSTATUS dcesrv_reply(struct dcesrv_call_state *call);
438 struct dcesrv_handle *dcesrv_handle_create(struct dcesrv_call_state *call,
439 uint8_t handle_type);
441 struct dcesrv_handle *dcesrv_handle_lookup(struct dcesrv_call_state *call,
442 const struct policy_handle *p,
443 uint8_t handle_type);
445 const struct tsocket_address *dcesrv_connection_get_local_address(struct dcesrv_connection *conn);
446 const struct tsocket_address *dcesrv_connection_get_remote_address(struct dcesrv_connection *conn);
449 * Fetch the authentication session key if available.
451 * This is the key generated by a gensec authentication.
453 NTSTATUS dcesrv_auth_session_key(struct dcesrv_call_state *call,
454 DATA_BLOB *session_key);
457 * Fetch the transport session key if available.
458 * Typically this is the SMB session key
459 * or a fixed key for local transports.
461 * The key is always truncated to 16 bytes.
463 NTSTATUS dcesrv_transport_session_key(struct dcesrv_call_state *call,
464 DATA_BLOB *session_key);
466 /* a useful macro for generating a RPC fault in the backend code */
467 #define DCESRV_FAULT(code) do { \
468 dce_call->fault_code = code; \
469 return r->out.result; \
472 /* a useful macro for generating a RPC fault in the backend code */
473 #define DCESRV_FAULT_VOID(code) do { \
474 dce_call->fault_code = code; \
478 /* a useful macro for checking the validity of a dcerpc policy handle
479 and giving the right fault code if invalid */
480 #define DCESRV_CHECK_HANDLE(h) do {if (!(h)) DCESRV_FAULT(DCERPC_FAULT_CONTEXT_MISMATCH); } while (0)
482 /* this checks for a valid policy handle, and gives a fault if an
483 invalid handle or retval if the handle is of the
485 #define DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, retval) do { \
486 (h) = dcesrv_handle_lookup(dce_call, (inhandle), DCESRV_HANDLE_ANY); \
487 DCESRV_CHECK_HANDLE(h); \
488 if ((t) != DCESRV_HANDLE_ANY && (h)->wire_handle.handle_type != (t)) { \
493 /* this checks for a valid policy handle and gives a dcerpc fault
494 if its the wrong type of handle */
495 #define DCESRV_PULL_HANDLE_FAULT(h, inhandle, t) do { \
496 (h) = dcesrv_handle_lookup(dce_call, (inhandle), t); \
497 DCESRV_CHECK_HANDLE(h); \
500 #define DCESRV_PULL_HANDLE(h, inhandle, t) DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, NT_STATUS_INVALID_HANDLE)
501 #define DCESRV_PULL_HANDLE_WERR(h, inhandle, t) DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, WERR_INVALID_HANDLE)
503 NTSTATUS dcesrv_add_ep(struct dcesrv_context *dce_ctx,
504 struct loadparm_context *lp_ctx,
505 struct dcesrv_endpoint *e,
506 struct tevent_context *event_ctx,
507 const struct model_ops *model_ops,
508 void *process_context);
511 * retrieve credentials from a dce_call
513 _PUBLIC_ struct cli_credentials *dcesrv_call_credentials(struct dcesrv_call_state *dce_call);
516 * returns true if this is an authenticated call
518 _PUBLIC_ bool dcesrv_call_authenticated(struct dcesrv_call_state *dce_call);
521 * retrieve account_name for a dce_call
523 _PUBLIC_ const char *dcesrv_call_account_name(struct dcesrv_call_state *dce_call);
526 * retrieve session_info from a dce_call
528 _PUBLIC_ struct auth_session_info *dcesrv_call_session_info(struct dcesrv_call_state *dce_call);
531 * retrieve auth type/level from a dce_call
533 _PUBLIC_ void dcesrv_call_auth_info(struct dcesrv_call_state *dce_call,
534 enum dcerpc_AuthType *auth_type,
535 enum dcerpc_AuthLevel *auth_level);
537 _PUBLIC_ NTSTATUS dcesrv_interface_bind_require_integrity(struct dcesrv_connection_context *context,
538 const struct dcesrv_interface *iface);
539 _PUBLIC_ NTSTATUS dcesrv_interface_bind_require_privacy(struct dcesrv_connection_context *context,
540 const struct dcesrv_interface *iface);
541 _PUBLIC_ NTSTATUS dcesrv_interface_bind_reject_connect(struct dcesrv_connection_context *context,
542 const struct dcesrv_interface *iface);
543 _PUBLIC_ NTSTATUS dcesrv_interface_bind_allow_connect(struct dcesrv_connection_context *context,
544 const struct dcesrv_interface *iface);
546 _PUBLIC_ NTSTATUS _dcesrv_iface_state_store_assoc(
547 struct dcesrv_call_state *call,
550 const char *location);
551 #define dcesrv_iface_state_store_assoc(call, magic, ptr) \
552 _dcesrv_iface_state_store_assoc((call), (magic), (ptr), \
554 _PUBLIC_ void *_dcesrv_iface_state_find_assoc(
555 struct dcesrv_call_state *call,
557 #define dcesrv_iface_state_find_assoc(call, magic, _type) \
559 _dcesrv_iface_state_find_assoc((call), (magic)), \
562 _PUBLIC_ NTSTATUS _dcesrv_iface_state_store_conn(
563 struct dcesrv_call_state *call,
566 const char *location);
567 #define dcesrv_iface_state_store_conn(call, magic, ptr) \
568 _dcesrv_iface_state_store_conn((call), (magic), (ptr), \
570 _PUBLIC_ void *_dcesrv_iface_state_find_conn(
571 struct dcesrv_call_state *call,
573 #define dcesrv_iface_state_find_conn(call, magic, _type) \
575 _dcesrv_iface_state_find_conn((call), (magic)), \
578 #endif /* SAMBA_DCERPC_SERVER_H */