2 Unix SMB/CIFS implementation.
4 server side dcerpc core code
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/>.
24 #include "auth/auth.h"
25 #include "auth/gensec/gensec.h"
26 #include "../lib/util/dlinklist.h"
27 #include "rpc_server/dcerpc_server.h"
28 #include "rpc_server/dcerpc_server_proto.h"
29 #include "rpc_server/common/proto.h"
30 #include "librpc/rpc/dcerpc_proto.h"
31 #include "system/filesys.h"
32 #include "libcli/security/security.h"
33 #include "param/param.h"
34 #include "../lib/tsocket/tsocket.h"
35 #include "../libcli/named_pipe_auth/npa_tstream.h"
36 #include "smbd/service_stream.h"
37 #include "../lib/tsocket/tsocket.h"
38 #include "lib/socket/socket.h"
39 #include "smbd/process_model.h"
40 #include "lib/messaging/irpc.h"
41 #include "librpc/rpc/rpc_common.h"
42 #include "lib/util/samba_modules.h"
43 #include "librpc/gen_ndr/ndr_dcerpc.h"
45 /* this is only used when the client asks for an unknown interface */
46 #define DUMMY_ASSOC_GROUP 0x0FFFFFFF
48 extern const struct dcesrv_interface dcesrv_mgmt_interface;
52 find an association group given a assoc_group_id
54 static struct dcesrv_assoc_group *dcesrv_assoc_group_find(struct dcesrv_context *dce_ctx,
59 id_ptr = idr_find(dce_ctx->assoc_groups_idr, id);
63 return talloc_get_type_abort(id_ptr, struct dcesrv_assoc_group);
67 take a reference to an existing association group
69 static struct dcesrv_assoc_group *dcesrv_assoc_group_reference(TALLOC_CTX *mem_ctx,
70 struct dcesrv_context *dce_ctx,
73 struct dcesrv_assoc_group *assoc_group;
75 assoc_group = dcesrv_assoc_group_find(dce_ctx, id);
76 if (assoc_group == NULL) {
77 DEBUG(0,(__location__ ": Failed to find assoc_group 0x%08x\n", id));
80 return talloc_reference(mem_ctx, assoc_group);
83 static int dcesrv_assoc_group_destructor(struct dcesrv_assoc_group *assoc_group)
86 ret = idr_remove(assoc_group->dce_ctx->assoc_groups_idr, assoc_group->id);
88 DEBUG(0,(__location__ ": Failed to remove assoc_group 0x%08x\n",
95 allocate a new association group
97 static struct dcesrv_assoc_group *dcesrv_assoc_group_new(TALLOC_CTX *mem_ctx,
98 struct dcesrv_context *dce_ctx)
100 struct dcesrv_assoc_group *assoc_group;
103 assoc_group = talloc_zero(mem_ctx, struct dcesrv_assoc_group);
104 if (assoc_group == NULL) {
108 id = idr_get_new_random(dce_ctx->assoc_groups_idr, assoc_group, UINT16_MAX);
110 talloc_free(assoc_group);
111 DEBUG(0,(__location__ ": Out of association groups!\n"));
115 assoc_group->id = id;
116 assoc_group->dce_ctx = dce_ctx;
118 talloc_set_destructor(assoc_group, dcesrv_assoc_group_destructor);
125 see if two endpoints match
127 static bool endpoints_match(const struct dcerpc_binding *ep1,
128 const struct dcerpc_binding *ep2)
130 enum dcerpc_transport_t t1;
131 enum dcerpc_transport_t t2;
135 t1 = dcerpc_binding_get_transport(ep1);
136 t2 = dcerpc_binding_get_transport(ep2);
138 e1 = dcerpc_binding_get_string_option(ep1, "endpoint");
139 e2 = dcerpc_binding_get_string_option(ep2, "endpoint");
149 if (strcasecmp(e1, e2) != 0) {
157 find an endpoint in the dcesrv_context
159 static struct dcesrv_endpoint *find_endpoint(struct dcesrv_context *dce_ctx,
160 const struct dcerpc_binding *ep_description)
162 struct dcesrv_endpoint *ep;
163 for (ep=dce_ctx->endpoint_list; ep; ep=ep->next) {
164 if (endpoints_match(ep->ep_description, ep_description)) {
172 find a registered context_id from a bind or alter_context
174 static struct dcesrv_connection_context *dcesrv_find_context(struct dcesrv_connection *conn,
177 struct dcesrv_connection_context *c;
178 for (c=conn->contexts;c;c=c->next) {
179 if (c->context_id == context_id) return c;
185 see if a uuid and if_version match to an interface
187 static bool interface_match(const struct dcesrv_interface *if1,
188 const struct dcesrv_interface *if2)
190 return (if1->syntax_id.if_version == if2->syntax_id.if_version &&
191 GUID_equal(&if1->syntax_id.uuid, &if2->syntax_id.uuid));
195 find the interface operations on an endpoint
197 static const struct dcesrv_interface *find_interface(const struct dcesrv_endpoint *endpoint,
198 const struct dcesrv_interface *iface)
200 struct dcesrv_if_list *ifl;
201 for (ifl=endpoint->interface_list; ifl; ifl=ifl->next) {
202 if (interface_match(&(ifl->iface), iface)) {
203 return &(ifl->iface);
210 see if a uuid and if_version match to an interface
212 static bool interface_match_by_uuid(const struct dcesrv_interface *iface,
213 const struct GUID *uuid, uint32_t if_version)
215 return (iface->syntax_id.if_version == if_version &&
216 GUID_equal(&iface->syntax_id.uuid, uuid));
220 find the interface operations on an endpoint by uuid
222 static const struct dcesrv_interface *find_interface_by_uuid(const struct dcesrv_endpoint *endpoint,
223 const struct GUID *uuid, uint32_t if_version)
225 struct dcesrv_if_list *ifl;
226 for (ifl=endpoint->interface_list; ifl; ifl=ifl->next) {
227 if (interface_match_by_uuid(&(ifl->iface), uuid, if_version)) {
228 return &(ifl->iface);
235 find the earlier parts of a fragmented call awaiting reassembily
237 static struct dcesrv_call_state *dcesrv_find_fragmented_call(struct dcesrv_connection *dce_conn, uint16_t call_id)
239 struct dcesrv_call_state *c;
240 for (c=dce_conn->incoming_fragmented_call_list;c;c=c->next) {
241 if (c->pkt.call_id == call_id) {
249 register an interface on an endpoint
251 _PUBLIC_ NTSTATUS dcesrv_interface_register(struct dcesrv_context *dce_ctx,
253 const struct dcesrv_interface *iface,
254 const struct security_descriptor *sd)
256 struct dcesrv_endpoint *ep;
257 struct dcesrv_if_list *ifl;
258 struct dcerpc_binding *binding;
262 status = dcerpc_parse_binding(dce_ctx, ep_name, &binding);
264 if (NT_STATUS_IS_ERR(status)) {
265 DEBUG(0, ("Trouble parsing binding string '%s'\n", ep_name));
269 /* check if this endpoint exists
271 if ((ep=find_endpoint(dce_ctx, binding))==NULL) {
272 ep = talloc_zero(dce_ctx, struct dcesrv_endpoint);
274 return NT_STATUS_NO_MEMORY;
277 ep->ep_description = talloc_move(ep, &binding);
280 /* add mgmt interface */
281 ifl = talloc_zero(ep, struct dcesrv_if_list);
283 return NT_STATUS_NO_MEMORY;
286 memcpy(&(ifl->iface), &dcesrv_mgmt_interface,
287 sizeof(struct dcesrv_interface));
289 DLIST_ADD(ep->interface_list, ifl);
292 /* see if the interface is already registered on te endpoint */
293 if (find_interface(ep, iface)!=NULL) {
294 DEBUG(0,("dcesrv_interface_register: interface '%s' already registered on endpoint '%s'\n",
295 iface->name, ep_name));
296 return NT_STATUS_OBJECT_NAME_COLLISION;
299 /* talloc a new interface list element */
300 ifl = talloc_zero(ep, struct dcesrv_if_list);
302 return NT_STATUS_NO_MEMORY;
305 /* copy the given interface struct to the one on the endpoints interface list */
306 memcpy(&(ifl->iface),iface, sizeof(struct dcesrv_interface));
308 /* if we have a security descriptor given,
309 * we should see if we can set it up on the endpoint
312 /* if there's currently no security descriptor given on the endpoint
315 if (ep->sd == NULL) {
316 ep->sd = security_descriptor_copy(ep, sd);
319 /* if now there's no security descriptor given on the endpoint
320 * something goes wrong, either we failed to copy the security descriptor
321 * or there was already one on the endpoint
323 if (ep->sd != NULL) {
324 DEBUG(0,("dcesrv_interface_register: interface '%s' failed to setup a security descriptor\n"
325 " on endpoint '%s'\n",
326 iface->name, ep_name));
327 if (add_ep) free(ep);
329 return NT_STATUS_OBJECT_NAME_COLLISION;
333 /* finally add the interface on the endpoint */
334 DLIST_ADD(ep->interface_list, ifl);
336 /* if it's a new endpoint add it to the dcesrv_context */
338 DLIST_ADD(dce_ctx->endpoint_list, ep);
341 DEBUG(4,("dcesrv_interface_register: interface '%s' registered on endpoint '%s'\n",
342 iface->name, ep_name));
347 NTSTATUS dcesrv_inherited_session_key(struct dcesrv_connection *p,
348 DATA_BLOB *session_key)
350 if (p->auth_state.session_info->session_key.length) {
351 *session_key = p->auth_state.session_info->session_key;
354 return NT_STATUS_NO_USER_SESSION_KEY;
358 fetch the user session key - may be default (above) or the SMB session key
360 The key is always truncated to 16 bytes
362 _PUBLIC_ NTSTATUS dcesrv_fetch_session_key(struct dcesrv_connection *p,
363 DATA_BLOB *session_key)
365 NTSTATUS status = p->auth_state.session_key(p, session_key);
366 if (!NT_STATUS_IS_OK(status)) {
370 session_key->length = MIN(session_key->length, 16);
376 connect to a dcerpc endpoint
378 _PUBLIC_ NTSTATUS dcesrv_endpoint_connect(struct dcesrv_context *dce_ctx,
380 const struct dcesrv_endpoint *ep,
381 struct auth_session_info *session_info,
382 struct tevent_context *event_ctx,
383 struct imessaging_context *msg_ctx,
384 struct server_id server_id,
385 uint32_t state_flags,
386 struct dcesrv_connection **_p)
388 struct dcesrv_connection *p;
391 return NT_STATUS_ACCESS_DENIED;
394 p = talloc_zero(mem_ctx, struct dcesrv_connection);
395 NT_STATUS_HAVE_NO_MEMORY(p);
397 if (!talloc_reference(p, session_info)) {
399 return NT_STATUS_NO_MEMORY;
402 p->dce_ctx = dce_ctx;
404 p->packet_log_dir = lpcfg_lock_directory(dce_ctx->lp_ctx);
405 p->auth_state.session_info = session_info;
406 p->auth_state.session_key = dcesrv_generic_session_key;
407 p->event_ctx = event_ctx;
408 p->msg_ctx = msg_ctx;
409 p->server_id = server_id;
410 p->state_flags = state_flags;
411 p->allow_bind = true;
412 p->max_recv_frag = 5840;
413 p->max_xmit_frag = 5840;
420 move a call from an existing linked list to the specified list. This
421 prevents bugs where we forget to remove the call from a previous
424 static void dcesrv_call_set_list(struct dcesrv_call_state *call,
425 enum dcesrv_call_list list)
427 switch (call->list) {
428 case DCESRV_LIST_NONE:
430 case DCESRV_LIST_CALL_LIST:
431 DLIST_REMOVE(call->conn->call_list, call);
433 case DCESRV_LIST_FRAGMENTED_CALL_LIST:
434 DLIST_REMOVE(call->conn->incoming_fragmented_call_list, call);
436 case DCESRV_LIST_PENDING_CALL_LIST:
437 DLIST_REMOVE(call->conn->pending_call_list, call);
442 case DCESRV_LIST_NONE:
444 case DCESRV_LIST_CALL_LIST:
445 DLIST_ADD_END(call->conn->call_list, call);
447 case DCESRV_LIST_FRAGMENTED_CALL_LIST:
448 DLIST_ADD_END(call->conn->incoming_fragmented_call_list, call);
450 case DCESRV_LIST_PENDING_CALL_LIST:
451 DLIST_ADD_END(call->conn->pending_call_list, call);
456 static void dcesrv_call_disconnect_after(struct dcesrv_call_state *call,
459 if (call->conn->terminate != NULL) {
463 call->conn->allow_bind = false;
464 call->conn->allow_alter = false;
465 call->conn->allow_auth3 = false;
466 call->conn->allow_request = false;
468 call->terminate_reason = talloc_strdup(call, reason);
469 if (call->terminate_reason == NULL) {
470 call->terminate_reason = __location__;
475 return a dcerpc bind_nak
477 static NTSTATUS dcesrv_bind_nak(struct dcesrv_call_state *call, uint32_t reason)
479 struct ncacn_packet pkt;
480 struct dcerpc_bind_nak_version version;
481 struct data_blob_list_item *rep;
483 static const uint8_t _pad[3] = { 0, };
486 * We add the call to the pending_call_list
487 * in order to defer the termination.
489 dcesrv_call_disconnect_after(call, "dcesrv_bind_nak");
491 /* setup a bind_nak */
492 dcesrv_init_hdr(&pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
494 pkt.call_id = call->pkt.call_id;
495 pkt.ptype = DCERPC_PKT_BIND_NAK;
496 pkt.pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST;
497 pkt.u.bind_nak.reject_reason = reason;
498 version.rpc_vers = 5;
499 version.rpc_vers_minor = 0;
500 pkt.u.bind_nak.num_versions = 1;
501 pkt.u.bind_nak.versions = &version;
502 pkt.u.bind_nak._pad = data_blob_const(_pad, sizeof(_pad));
504 rep = talloc_zero(call, struct data_blob_list_item);
506 return NT_STATUS_NO_MEMORY;
509 status = ncacn_push_auth(&rep->blob, call, &pkt, NULL);
510 if (!NT_STATUS_IS_OK(status)) {
514 dcerpc_set_frag_length(&rep->blob, rep->blob.length);
516 DLIST_ADD_END(call->replies, rep);
517 dcesrv_call_set_list(call, DCESRV_LIST_CALL_LIST);
519 if (call->conn->call_list && call->conn->call_list->replies) {
520 if (call->conn->transport.report_output_data) {
521 call->conn->transport.report_output_data(call->conn);
528 static NTSTATUS dcesrv_fault_disconnect(struct dcesrv_call_state *call,
532 * We add the call to the pending_call_list
533 * in order to defer the termination.
535 dcesrv_call_disconnect_after(call, "dcesrv_fault_disconnect");
537 return dcesrv_fault_with_flags(call, fault_code,
538 DCERPC_PFC_FLAG_DID_NOT_EXECUTE);
541 static int dcesrv_connection_context_destructor(struct dcesrv_connection_context *c)
543 DLIST_REMOVE(c->conn->contexts, c);
545 if (c->iface && c->iface->unbind) {
546 c->iface->unbind(c, c->iface);
553 static void dcesrv_prepare_context_auth(struct dcesrv_call_state *dce_call)
555 struct loadparm_context *lp_ctx = dce_call->conn->dce_ctx->lp_ctx;
556 const struct dcesrv_endpoint *endpoint = dce_call->conn->endpoint;
557 enum dcerpc_transport_t transport =
558 dcerpc_binding_get_transport(endpoint->ep_description);
559 struct dcesrv_connection_context *context = dce_call->context;
560 const struct dcesrv_interface *iface = context->iface;
562 context->min_auth_level = DCERPC_AUTH_LEVEL_NONE;
564 if (transport == NCALRPC) {
565 context->allow_connect = true;
570 * allow overwrite per interface
571 * allow dcerpc auth level connect:<interface>
573 context->allow_connect = lpcfg_allow_dcerpc_auth_level_connect(lp_ctx);
574 context->allow_connect = lpcfg_parm_bool(lp_ctx, NULL,
575 "allow dcerpc auth level connect",
577 context->allow_connect);
580 NTSTATUS dcesrv_interface_bind_require_integrity(struct dcesrv_call_state *dce_call,
581 const struct dcesrv_interface *iface)
583 if (dce_call->context == NULL) {
584 return NT_STATUS_INTERNAL_ERROR;
587 dce_call->context->min_auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
591 NTSTATUS dcesrv_interface_bind_require_privacy(struct dcesrv_call_state *dce_call,
592 const struct dcesrv_interface *iface)
594 if (dce_call->context == NULL) {
595 return NT_STATUS_INTERNAL_ERROR;
598 dce_call->context->min_auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
602 _PUBLIC_ NTSTATUS dcesrv_interface_bind_reject_connect(struct dcesrv_call_state *dce_call,
603 const struct dcesrv_interface *iface)
605 struct loadparm_context *lp_ctx = dce_call->conn->dce_ctx->lp_ctx;
606 const struct dcesrv_endpoint *endpoint = dce_call->conn->endpoint;
607 enum dcerpc_transport_t transport =
608 dcerpc_binding_get_transport(endpoint->ep_description);
609 struct dcesrv_connection_context *context = dce_call->context;
611 if (context == NULL) {
612 return NT_STATUS_INTERNAL_ERROR;
615 if (transport == NCALRPC) {
616 context->allow_connect = true;
621 * allow overwrite per interface
622 * allow dcerpc auth level connect:<interface>
624 context->allow_connect = false;
625 context->allow_connect = lpcfg_parm_bool(lp_ctx, NULL,
626 "allow dcerpc auth level connect",
628 context->allow_connect);
632 _PUBLIC_ NTSTATUS dcesrv_interface_bind_allow_connect(struct dcesrv_call_state *dce_call,
633 const struct dcesrv_interface *iface)
635 struct loadparm_context *lp_ctx = dce_call->conn->dce_ctx->lp_ctx;
636 const struct dcesrv_endpoint *endpoint = dce_call->conn->endpoint;
637 enum dcerpc_transport_t transport =
638 dcerpc_binding_get_transport(endpoint->ep_description);
639 struct dcesrv_connection_context *context = dce_call->context;
641 if (context == NULL) {
642 return NT_STATUS_INTERNAL_ERROR;
645 if (transport == NCALRPC) {
646 context->allow_connect = true;
651 * allow overwrite per interface
652 * allow dcerpc auth level connect:<interface>
654 context->allow_connect = true;
655 context->allow_connect = lpcfg_parm_bool(lp_ctx, NULL,
656 "allow dcerpc auth level connect",
658 context->allow_connect);
663 handle a bind request
665 static NTSTATUS dcesrv_bind(struct dcesrv_call_state *call)
667 uint32_t if_version, transfer_syntax_version;
668 struct GUID uuid, *transfer_syntax_uuid;
669 struct ncacn_packet pkt;
670 struct data_blob_list_item *rep;
672 uint32_t result=0, reason=0;
674 const struct dcesrv_interface *iface;
675 uint32_t extra_flags = 0;
676 uint16_t max_req = 0;
677 uint16_t max_rep = 0;
678 const char *ep_prefix = "";
679 const char *endpoint = NULL;
681 status = dcerpc_verify_ncacn_packet_header(&call->pkt,
683 call->pkt.u.bind.auth_info.length,
684 0, /* required flags */
685 DCERPC_PFC_FLAG_FIRST |
686 DCERPC_PFC_FLAG_LAST |
687 DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN |
688 0x08 | /* this is not defined, but should be ignored */
689 DCERPC_PFC_FLAG_CONC_MPX |
690 DCERPC_PFC_FLAG_DID_NOT_EXECUTE |
691 DCERPC_PFC_FLAG_MAYBE |
692 DCERPC_PFC_FLAG_OBJECT_UUID);
693 if (!NT_STATUS_IS_OK(status)) {
694 return dcesrv_bind_nak(call,
695 DCERPC_BIND_NAK_REASON_PROTOCOL_VERSION_NOT_SUPPORTED);
698 /* max_recv_frag and max_xmit_frag result always in the same value! */
699 max_req = MIN(call->pkt.u.bind.max_xmit_frag,
700 call->pkt.u.bind.max_recv_frag);
702 * The values are between 2048 and 5840 tested against Windows 2012R2
703 * via ncacn_ip_tcp on port 135.
705 max_req = MAX(2048, max_req);
706 max_rep = MIN(max_req, call->conn->max_recv_frag);
707 /* They are truncated to an 8 byte boundary. */
710 /* max_recv_frag and max_xmit_frag result always in the same value! */
711 call->conn->max_recv_frag = max_rep;
712 call->conn->max_xmit_frag = max_rep;
715 if provided, check the assoc_group is valid
717 if (call->pkt.u.bind.assoc_group_id != 0 &&
718 lpcfg_parm_bool(call->conn->dce_ctx->lp_ctx, NULL, "dcesrv","assoc group checking", true) &&
719 dcesrv_assoc_group_find(call->conn->dce_ctx, call->pkt.u.bind.assoc_group_id) == NULL) {
720 return dcesrv_bind_nak(call, 0);
723 if (call->pkt.u.bind.num_contexts < 1 ||
724 call->pkt.u.bind.ctx_list[0].num_transfer_syntaxes < 1) {
725 return dcesrv_bind_nak(call, 0);
728 context_id = call->pkt.u.bind.ctx_list[0].context_id;
729 if_version = call->pkt.u.bind.ctx_list[0].abstract_syntax.if_version;
730 uuid = call->pkt.u.bind.ctx_list[0].abstract_syntax.uuid;
732 transfer_syntax_version = call->pkt.u.bind.ctx_list[0].transfer_syntaxes[0].if_version;
733 transfer_syntax_uuid = &call->pkt.u.bind.ctx_list[0].transfer_syntaxes[0].uuid;
734 if (!GUID_equal(&ndr_transfer_syntax_ndr.uuid, transfer_syntax_uuid) != 0 ||
735 ndr_transfer_syntax_ndr.if_version != transfer_syntax_version) {
736 char *uuid_str = GUID_string(call, transfer_syntax_uuid);
737 /* we only do NDR encoded dcerpc */
738 DEBUG(0,("Non NDR transfer syntax requested - %s\n", uuid_str));
739 talloc_free(uuid_str);
740 return dcesrv_bind_nak(call, 0);
743 iface = find_interface_by_uuid(call->conn->endpoint, &uuid, if_version);
745 char *uuid_str = GUID_string(call, &uuid);
746 DEBUG(2,("Request for unknown dcerpc interface %s/%d\n", uuid_str, if_version));
747 talloc_free(uuid_str);
749 /* we don't know about that interface */
750 result = DCERPC_BIND_PROVIDER_REJECT;
751 reason = DCERPC_BIND_REASON_ASYNTAX;
755 /* add this context to the list of available context_ids */
756 struct dcesrv_connection_context *context = talloc_zero(call->conn,
757 struct dcesrv_connection_context);
758 if (context == NULL) {
759 return dcesrv_bind_nak(call, 0);
761 context->conn = call->conn;
762 context->iface = iface;
763 context->context_id = context_id;
764 if (call->pkt.u.bind.assoc_group_id != 0) {
765 context->assoc_group = dcesrv_assoc_group_reference(context,
767 call->pkt.u.bind.assoc_group_id);
769 context->assoc_group = dcesrv_assoc_group_new(context, call->conn->dce_ctx);
771 if (context->assoc_group == NULL) {
772 talloc_free(context);
773 return dcesrv_bind_nak(call, 0);
775 context->private_data = NULL;
776 DLIST_ADD(call->conn->contexts, context);
777 call->context = context;
778 talloc_set_destructor(context, dcesrv_connection_context_destructor);
780 dcesrv_prepare_context_auth(call);
782 status = iface->bind(call, iface, if_version);
783 if (!NT_STATUS_IS_OK(status)) {
784 char *uuid_str = GUID_string(call, &uuid);
785 DEBUG(2,("Request for dcerpc interface %s/%d rejected: %s\n",
786 uuid_str, if_version, nt_errstr(status)));
787 talloc_free(uuid_str);
788 /* we don't want to trigger the iface->unbind() hook */
789 context->iface = NULL;
790 talloc_free(call->context);
791 call->context = NULL;
792 return dcesrv_bind_nak(call, 0);
796 if ((call->pkt.pfc_flags & DCERPC_PFC_FLAG_CONC_MPX) &&
797 (call->state_flags & DCESRV_CALL_STATE_FLAG_MULTIPLEXED)) {
798 call->context->conn->state_flags |= DCESRV_CALL_STATE_FLAG_MULTIPLEXED;
799 extra_flags |= DCERPC_PFC_FLAG_CONC_MPX;
802 if (call->state_flags & DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL) {
803 call->context->conn->state_flags |= DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL;
806 /* handle any authentication that is being requested */
807 if (!dcesrv_auth_bind(call)) {
808 struct dcesrv_auth *auth = &call->conn->auth_state;
810 TALLOC_FREE(call->context);
812 if (auth->auth_level != DCERPC_AUTH_LEVEL_NONE) {
814 * We only give INVALID_AUTH_TYPE if the auth_level was
817 return dcesrv_bind_nak(call,
818 DCERPC_BIND_NAK_REASON_INVALID_AUTH_TYPE);
820 return dcesrv_bind_nak(call,
821 DCERPC_BIND_NAK_REASON_NOT_SPECIFIED);
824 /* setup a bind_ack */
825 dcesrv_init_hdr(&pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
827 pkt.call_id = call->pkt.call_id;
828 pkt.ptype = DCERPC_PKT_BIND_ACK;
829 pkt.pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | extra_flags;
830 pkt.u.bind_ack.max_xmit_frag = call->conn->max_xmit_frag;
831 pkt.u.bind_ack.max_recv_frag = call->conn->max_recv_frag;
834 make it possible for iface->bind() to specify the assoc_group_id
835 This helps the openchange mapiproxy plugin to work correctly.
840 pkt.u.bind_ack.assoc_group_id = call->context->assoc_group->id;
842 pkt.u.bind_ack.assoc_group_id = DUMMY_ASSOC_GROUP;
846 endpoint = dcerpc_binding_get_string_option(
847 call->conn->endpoint->ep_description,
851 if (endpoint == NULL) {
855 if (strncasecmp(endpoint, "\\pipe\\", 6) == 0) {
857 * TODO: check if this is really needed
859 * Or if we should fix this in our idl files.
861 ep_prefix = "\\PIPE\\";
865 pkt.u.bind_ack.secondary_address = talloc_asprintf(call, "%s%s",
868 if (pkt.u.bind_ack.secondary_address == NULL) {
869 TALLOC_FREE(call->context);
870 return NT_STATUS_NO_MEMORY;
872 pkt.u.bind_ack.num_results = 1;
873 pkt.u.bind_ack.ctx_list = talloc_zero(call, struct dcerpc_ack_ctx);
874 if (!pkt.u.bind_ack.ctx_list) {
875 talloc_free(call->context);
876 call->context = NULL;
877 return NT_STATUS_NO_MEMORY;
879 pkt.u.bind_ack.ctx_list[0].result = result;
880 pkt.u.bind_ack.ctx_list[0].reason.value = reason;
881 pkt.u.bind_ack.ctx_list[0].syntax = ndr_transfer_syntax_ndr;
882 pkt.u.bind_ack.auth_info = data_blob(NULL, 0);
884 status = dcesrv_auth_bind_ack(call, &pkt);
885 if (!NT_STATUS_IS_OK(status)) {
886 talloc_free(call->context);
887 call->context = NULL;
888 return dcesrv_bind_nak(call, 0);
891 rep = talloc_zero(call, struct data_blob_list_item);
893 talloc_free(call->context);
894 call->context = NULL;
895 return NT_STATUS_NO_MEMORY;
898 status = ncacn_push_auth(&rep->blob, call, &pkt,
899 call->out_auth_info);
900 if (!NT_STATUS_IS_OK(status)) {
901 talloc_free(call->context);
902 call->context = NULL;
906 dcerpc_set_frag_length(&rep->blob, rep->blob.length);
908 DLIST_ADD_END(call->replies, rep);
909 dcesrv_call_set_list(call, DCESRV_LIST_CALL_LIST);
911 if (call->conn->call_list && call->conn->call_list->replies) {
912 if (call->conn->transport.report_output_data) {
913 call->conn->transport.report_output_data(call->conn);
922 handle a auth3 request
924 static NTSTATUS dcesrv_auth3(struct dcesrv_call_state *call)
928 if (!call->conn->allow_auth3) {
929 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
932 if (call->conn->auth_state.auth_finished) {
933 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
936 status = dcerpc_verify_ncacn_packet_header(&call->pkt,
938 call->pkt.u.auth3.auth_info.length,
939 0, /* required flags */
940 DCERPC_PFC_FLAG_FIRST |
941 DCERPC_PFC_FLAG_LAST |
942 DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN |
943 0x08 | /* this is not defined, but should be ignored */
944 DCERPC_PFC_FLAG_CONC_MPX |
945 DCERPC_PFC_FLAG_DID_NOT_EXECUTE |
946 DCERPC_PFC_FLAG_MAYBE |
947 DCERPC_PFC_FLAG_OBJECT_UUID);
948 if (!NT_STATUS_IS_OK(status)) {
949 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
952 /* handle the auth3 in the auth code */
953 if (!dcesrv_auth_auth3(call)) {
954 call->conn->auth_state.auth_invalid = true;
959 /* we don't send a reply to a auth3 request, except by a
966 handle a bind request
968 static NTSTATUS dcesrv_alter_new_context(struct dcesrv_call_state *call, uint32_t context_id)
970 uint32_t if_version, transfer_syntax_version;
971 struct dcesrv_connection_context *context;
972 const struct dcesrv_interface *iface;
973 struct GUID uuid, *transfer_syntax_uuid;
976 if_version = call->pkt.u.alter.ctx_list[0].abstract_syntax.if_version;
977 uuid = call->pkt.u.alter.ctx_list[0].abstract_syntax.uuid;
979 transfer_syntax_version = call->pkt.u.alter.ctx_list[0].transfer_syntaxes[0].if_version;
980 transfer_syntax_uuid = &call->pkt.u.alter.ctx_list[0].transfer_syntaxes[0].uuid;
981 if (!GUID_equal(transfer_syntax_uuid, &ndr_transfer_syntax_ndr.uuid) ||
982 ndr_transfer_syntax_ndr.if_version != transfer_syntax_version) {
983 /* we only do NDR encoded dcerpc */
984 return NT_STATUS_RPC_PROTSEQ_NOT_SUPPORTED;
987 iface = find_interface_by_uuid(call->conn->endpoint, &uuid, if_version);
989 char *uuid_str = GUID_string(call, &uuid);
990 DEBUG(2,("Request for unknown dcerpc interface %s/%d\n", uuid_str, if_version));
991 talloc_free(uuid_str);
992 return NT_STATUS_RPC_PROTSEQ_NOT_SUPPORTED;
995 /* add this context to the list of available context_ids */
996 context = talloc_zero(call->conn, struct dcesrv_connection_context);
997 if (context == NULL) {
998 return NT_STATUS_NO_MEMORY;
1000 context->conn = call->conn;
1001 context->iface = iface;
1002 context->context_id = context_id;
1003 if (call->pkt.u.alter.assoc_group_id != 0) {
1004 context->assoc_group = dcesrv_assoc_group_reference(context,
1005 call->conn->dce_ctx,
1006 call->pkt.u.alter.assoc_group_id);
1008 context->assoc_group = dcesrv_assoc_group_new(context, call->conn->dce_ctx);
1010 if (context->assoc_group == NULL) {
1011 talloc_free(context);
1012 call->context = NULL;
1013 return NT_STATUS_NO_MEMORY;
1015 context->private_data = NULL;
1016 DLIST_ADD(call->conn->contexts, context);
1017 call->context = context;
1018 talloc_set_destructor(context, dcesrv_connection_context_destructor);
1020 dcesrv_prepare_context_auth(call);
1022 status = iface->bind(call, iface, if_version);
1023 if (!NT_STATUS_IS_OK(status)) {
1024 /* we don't want to trigger the iface->unbind() hook */
1025 context->iface = NULL;
1026 talloc_free(context);
1027 call->context = NULL;
1031 return NT_STATUS_OK;
1034 /* setup and send an alter_resp */
1035 static NTSTATUS dcesrv_alter_resp(struct dcesrv_call_state *call,
1039 struct ncacn_packet pkt;
1040 uint32_t extra_flags = 0;
1041 struct data_blob_list_item *rep = NULL;
1044 dcesrv_init_hdr(&pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
1045 pkt.auth_length = 0;
1046 pkt.call_id = call->pkt.call_id;
1047 pkt.ptype = DCERPC_PKT_ALTER_RESP;
1049 if ((call->pkt.pfc_flags & DCERPC_PFC_FLAG_CONC_MPX) &&
1050 call->context->conn->state_flags &
1051 DCESRV_CALL_STATE_FLAG_MULTIPLEXED) {
1052 extra_flags |= DCERPC_PFC_FLAG_CONC_MPX;
1054 if (call->state_flags & DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL) {
1055 call->context->conn->state_flags |=
1056 DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL;
1059 pkt.pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | extra_flags;
1060 pkt.u.alter_resp.max_xmit_frag = call->conn->max_xmit_frag;
1061 pkt.u.alter_resp.max_recv_frag = call->conn->max_recv_frag;
1063 pkt.u.alter_resp.assoc_group_id = call->context->assoc_group->id;
1065 pkt.u.alter_resp.assoc_group_id = 0;
1067 pkt.u.alter_resp.num_results = 1;
1068 pkt.u.alter_resp.ctx_list = talloc_zero(call, struct dcerpc_ack_ctx);
1069 if (!pkt.u.alter_resp.ctx_list) {
1070 return NT_STATUS_NO_MEMORY;
1072 pkt.u.alter_resp.ctx_list[0].result = result;
1073 pkt.u.alter_resp.ctx_list[0].reason.value = reason;
1074 pkt.u.alter_resp.ctx_list[0].syntax = ndr_transfer_syntax_ndr;
1075 pkt.u.alter_resp.auth_info = data_blob(NULL, 0);
1076 pkt.u.alter_resp.secondary_address = "";
1078 status = dcesrv_auth_alter_ack(call, &pkt);
1079 if (!NT_STATUS_IS_OK(status)) {
1080 return dcesrv_fault_disconnect(call, DCERPC_FAULT_SEC_PKG_ERROR);
1083 rep = talloc_zero(call, struct data_blob_list_item);
1085 return NT_STATUS_NO_MEMORY;
1088 status = ncacn_push_auth(&rep->blob, call, &pkt, call->out_auth_info);
1089 if (!NT_STATUS_IS_OK(status)) {
1093 dcerpc_set_frag_length(&rep->blob, rep->blob.length);
1095 DLIST_ADD_END(call->replies, rep);
1096 dcesrv_call_set_list(call, DCESRV_LIST_CALL_LIST);
1098 if (call->conn->call_list && call->conn->call_list->replies) {
1099 if (call->conn->transport.report_output_data) {
1100 call->conn->transport.report_output_data(call->conn);
1104 return NT_STATUS_OK;
1108 handle a alter context request
1110 static NTSTATUS dcesrv_alter(struct dcesrv_call_state *call)
1113 const struct dcerpc_ctx_list *ctx = NULL;
1114 bool auth_ok = false;
1116 if (!call->conn->allow_alter) {
1117 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
1120 status = dcerpc_verify_ncacn_packet_header(&call->pkt,
1122 call->pkt.u.alter.auth_info.length,
1123 0, /* required flags */
1124 DCERPC_PFC_FLAG_FIRST |
1125 DCERPC_PFC_FLAG_LAST |
1126 DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN |
1127 0x08 | /* this is not defined, but should be ignored */
1128 DCERPC_PFC_FLAG_CONC_MPX |
1129 DCERPC_PFC_FLAG_DID_NOT_EXECUTE |
1130 DCERPC_PFC_FLAG_MAYBE |
1131 DCERPC_PFC_FLAG_OBJECT_UUID);
1132 if (!NT_STATUS_IS_OK(status)) {
1133 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
1136 auth_ok = dcesrv_auth_alter(call);
1138 if (call->in_auth_info.auth_type == DCERPC_AUTH_TYPE_NONE) {
1139 return dcesrv_fault_disconnect(call,
1140 DCERPC_FAULT_ACCESS_DENIED);
1144 if (call->pkt.u.alter.num_contexts < 1) {
1145 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
1147 ctx = &call->pkt.u.alter.ctx_list[0];
1148 if (ctx->num_transfer_syntaxes < 1) {
1149 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
1152 /* see if they are asking for a new interface */
1153 call->context = dcesrv_find_context(call->conn, ctx->context_id);
1154 if (!call->context) {
1155 status = dcesrv_alter_new_context(call, ctx->context_id);
1156 if (!NT_STATUS_IS_OK(status)) {
1157 return dcesrv_alter_resp(call,
1158 DCERPC_BIND_PROVIDER_REJECT,
1159 DCERPC_BIND_REASON_ASYNTAX);
1164 ok = ndr_syntax_id_equal(&ctx->abstract_syntax,
1165 &call->context->iface->syntax_id);
1167 return dcesrv_fault_disconnect(call,
1168 DCERPC_NCA_S_PROTO_ERROR);
1171 if (ctx->num_transfer_syntaxes != 1) {
1172 return dcesrv_fault_disconnect(call,
1173 DCERPC_NCA_S_PROTO_ERROR);
1176 ok = ndr_syntax_id_equal(&ctx->transfer_syntaxes[0],
1177 &ndr_transfer_syntax_ndr);
1179 return dcesrv_fault_disconnect(call,
1180 DCERPC_NCA_S_PROTO_ERROR);
1184 if (call->pkt.u.alter.assoc_group_id != 0 &&
1185 lpcfg_parm_bool(call->conn->dce_ctx->lp_ctx, NULL, "dcesrv","assoc group checking", true) &&
1186 call->pkt.u.alter.assoc_group_id != call->context->assoc_group->id) {
1187 DEBUG(0,(__location__ ": Failed attempt to use new assoc_group in alter context (0x%08x 0x%08x)\n",
1188 call->context->assoc_group->id, call->pkt.u.alter.assoc_group_id));
1189 /* TODO: can they ask for a new association group? */
1190 return dcesrv_alter_resp(call,
1191 DCERPC_BIND_PROVIDER_REJECT,
1192 DCERPC_BIND_REASON_ASYNTAX);
1195 /* handle any authentication that is being requested */
1197 if (call->in_auth_info.auth_type !=
1198 call->conn->auth_state.auth_type)
1200 return dcesrv_fault_disconnect(call,
1201 DCERPC_FAULT_SEC_PKG_ERROR);
1203 return dcesrv_fault_disconnect(call, DCERPC_FAULT_ACCESS_DENIED);
1206 return dcesrv_alter_resp(call,
1207 DCERPC_BIND_ACK_RESULT_ACCEPTANCE,
1208 DCERPC_BIND_ACK_REASON_NOT_SPECIFIED);
1212 possibly save the call for inspection with ndrdump
1214 static void dcesrv_save_call(struct dcesrv_call_state *call, const char *why)
1218 const char *dump_dir;
1219 dump_dir = lpcfg_parm_string(call->conn->dce_ctx->lp_ctx, NULL, "dcesrv", "stubs directory");
1223 fname = talloc_asprintf(call, "%s/RPC-%s-%u-%s.dat",
1225 call->context->iface->name,
1226 call->pkt.u.request.opnum,
1228 if (file_save(fname, call->pkt.u.request.stub_and_verifier.data, call->pkt.u.request.stub_and_verifier.length)) {
1229 DEBUG(0,("RPC SAVED %s\n", fname));
1235 static NTSTATUS dcesrv_check_verification_trailer(struct dcesrv_call_state *call)
1237 TALLOC_CTX *frame = talloc_stackframe();
1238 const uint32_t bitmask1 = call->conn->auth_state.client_hdr_signing ?
1239 DCERPC_SEC_VT_CLIENT_SUPPORTS_HEADER_SIGNING : 0;
1240 const struct dcerpc_sec_vt_pcontext pcontext = {
1241 .abstract_syntax = call->context->iface->syntax_id,
1242 .transfer_syntax = ndr_transfer_syntax_ndr,
1244 const struct dcerpc_sec_vt_header2 header2 =
1245 dcerpc_sec_vt_header2_from_ncacn_packet(&call->pkt);
1246 enum ndr_err_code ndr_err;
1247 struct dcerpc_sec_verification_trailer *vt = NULL;
1248 NTSTATUS status = NT_STATUS_OK;
1251 SMB_ASSERT(call->pkt.ptype == DCERPC_PKT_REQUEST);
1253 ndr_err = ndr_pop_dcerpc_sec_verification_trailer(call->ndr_pull,
1255 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1256 status = ndr_map_error2ntstatus(ndr_err);
1260 ok = dcerpc_sec_verification_trailer_check(vt, &bitmask1,
1261 &pcontext, &header2);
1263 status = NT_STATUS_ACCESS_DENIED;
1272 handle a dcerpc request packet
1274 static NTSTATUS dcesrv_request(struct dcesrv_call_state *call)
1276 const struct dcesrv_endpoint *endpoint = call->conn->endpoint;
1277 enum dcerpc_transport_t transport =
1278 dcerpc_binding_get_transport(endpoint->ep_description);
1279 struct ndr_pull *pull;
1281 struct dcesrv_connection_context *context;
1283 if (!call->conn->allow_request) {
1284 return dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
1287 /* if authenticated, and the mech we use can't do async replies, don't use them... */
1288 if (call->conn->auth_state.gensec_security &&
1289 !gensec_have_feature(call->conn->auth_state.gensec_security, GENSEC_FEATURE_ASYNC_REPLIES)) {
1290 call->state_flags &= ~DCESRV_CALL_STATE_FLAG_MAY_ASYNC;
1293 context = dcesrv_find_context(call->conn, call->pkt.u.request.context_id);
1294 if (context == NULL) {
1295 return dcesrv_fault(call, DCERPC_FAULT_UNK_IF);
1298 switch (call->conn->auth_state.auth_level) {
1299 case DCERPC_AUTH_LEVEL_NONE:
1300 case DCERPC_AUTH_LEVEL_INTEGRITY:
1301 case DCERPC_AUTH_LEVEL_PRIVACY:
1304 if (!context->allow_connect) {
1307 addr = tsocket_address_string(call->conn->remote_address,
1310 DEBUG(2, ("%s: restrict auth_level_connect access "
1311 "to [%s] with auth[type=0x%x,level=0x%x] "
1312 "on [%s] from [%s]\n",
1313 __func__, context->iface->name,
1314 call->conn->auth_state.auth_type,
1315 call->conn->auth_state.auth_level,
1316 derpc_transport_string_by_transport(transport),
1318 return dcesrv_fault(call, DCERPC_FAULT_ACCESS_DENIED);
1323 if (call->conn->auth_state.auth_level < context->min_auth_level) {
1326 addr = tsocket_address_string(call->conn->remote_address, call);
1328 DEBUG(2, ("%s: restrict access by min_auth_level[0x%x] "
1329 "to [%s] with auth[type=0x%x,level=0x%x] "
1330 "on [%s] from [%s]\n",
1332 context->min_auth_level,
1333 context->iface->name,
1334 call->conn->auth_state.auth_type,
1335 call->conn->auth_state.auth_level,
1336 derpc_transport_string_by_transport(transport),
1338 return dcesrv_fault(call, DCERPC_FAULT_ACCESS_DENIED);
1341 pull = ndr_pull_init_blob(&call->pkt.u.request.stub_and_verifier, call);
1342 NT_STATUS_HAVE_NO_MEMORY(pull);
1344 pull->flags |= LIBNDR_FLAG_REF_ALLOC;
1346 call->context = context;
1347 call->ndr_pull = pull;
1349 if (!(call->pkt.drep[0] & DCERPC_DREP_LE)) {
1350 pull->flags |= LIBNDR_FLAG_BIGENDIAN;
1353 status = dcesrv_check_verification_trailer(call);
1354 if (!NT_STATUS_IS_OK(status)) {
1355 uint32_t faultcode = DCERPC_FAULT_OTHER;
1356 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
1357 faultcode = DCERPC_FAULT_ACCESS_DENIED;
1359 DEBUG(10, ("dcesrv_check_verification_trailer failed: %s\n",
1360 nt_errstr(status)));
1361 return dcesrv_fault(call, faultcode);
1364 /* unravel the NDR for the packet */
1365 status = context->iface->ndr_pull(call, call, pull, &call->r);
1366 if (!NT_STATUS_IS_OK(status)) {
1367 if (call->fault_code == DCERPC_FAULT_OP_RNG_ERROR) {
1368 /* we got an unknown call */
1369 DEBUG(3,(__location__ ": Unknown RPC call %u on %s\n",
1370 call->pkt.u.request.opnum, context->iface->name));
1371 dcesrv_save_call(call, "unknown");
1373 dcesrv_save_call(call, "pullfail");
1375 return dcesrv_fault(call, call->fault_code);
1378 if (pull->offset != pull->data_size) {
1379 dcesrv_save_call(call, "extrabytes");
1380 DEBUG(3,("Warning: %d extra bytes in incoming RPC request\n",
1381 pull->data_size - pull->offset));
1384 /* call the dispatch function */
1385 status = context->iface->dispatch(call, call, call->r);
1386 if (!NT_STATUS_IS_OK(status)) {
1387 DEBUG(5,("dcerpc fault in call %s:%02x - %s\n",
1388 context->iface->name,
1389 call->pkt.u.request.opnum,
1390 dcerpc_errstr(pull, call->fault_code)));
1391 return dcesrv_fault(call, call->fault_code);
1394 /* add the call to the pending list */
1395 dcesrv_call_set_list(call, DCESRV_LIST_PENDING_CALL_LIST);
1397 if (call->state_flags & DCESRV_CALL_STATE_FLAG_ASYNC) {
1398 return NT_STATUS_OK;
1401 return dcesrv_reply(call);
1406 remove the call from the right list when freed
1408 static int dcesrv_call_dequeue(struct dcesrv_call_state *call)
1410 dcesrv_call_set_list(call, DCESRV_LIST_NONE);
1414 _PUBLIC_ const struct tsocket_address *dcesrv_connection_get_local_address(struct dcesrv_connection *conn)
1416 return conn->local_address;
1419 _PUBLIC_ const struct tsocket_address *dcesrv_connection_get_remote_address(struct dcesrv_connection *conn)
1421 return conn->remote_address;
1425 process some input to a dcerpc endpoint server.
1427 static NTSTATUS dcesrv_process_ncacn_packet(struct dcesrv_connection *dce_conn,
1428 struct ncacn_packet *pkt,
1432 struct dcesrv_call_state *call;
1434 call = talloc_zero(dce_conn, struct dcesrv_call_state);
1436 data_blob_free(&blob);
1438 return NT_STATUS_NO_MEMORY;
1440 call->conn = dce_conn;
1441 call->event_ctx = dce_conn->event_ctx;
1442 call->msg_ctx = dce_conn->msg_ctx;
1443 call->state_flags = call->conn->state_flags;
1444 call->time = timeval_current();
1445 call->list = DCESRV_LIST_NONE;
1447 talloc_steal(call, pkt);
1448 talloc_steal(call, blob.data);
1451 talloc_set_destructor(call, dcesrv_call_dequeue);
1453 if (call->conn->allow_bind) {
1455 * Only one bind is possible per connection
1457 call->conn->allow_bind = false;
1458 return dcesrv_bind(call);
1461 /* we have to check the signing here, before combining the
1463 if (call->pkt.ptype == DCERPC_PKT_REQUEST) {
1464 if (!call->conn->allow_request) {
1465 return dcesrv_fault_disconnect(call,
1466 DCERPC_NCA_S_PROTO_ERROR);
1469 status = dcerpc_verify_ncacn_packet_header(&call->pkt,
1471 call->pkt.u.request.stub_and_verifier.length,
1472 0, /* required_flags */
1473 DCERPC_PFC_FLAG_FIRST |
1474 DCERPC_PFC_FLAG_LAST |
1475 DCERPC_PFC_FLAG_PENDING_CANCEL |
1476 0x08 | /* this is not defined, but should be ignored */
1477 DCERPC_PFC_FLAG_CONC_MPX |
1478 DCERPC_PFC_FLAG_DID_NOT_EXECUTE |
1479 DCERPC_PFC_FLAG_MAYBE |
1480 DCERPC_PFC_FLAG_OBJECT_UUID);
1481 if (!NT_STATUS_IS_OK(status)) {
1482 return dcesrv_fault_disconnect(call,
1483 DCERPC_NCA_S_PROTO_ERROR);
1486 if (!dcesrv_auth_request(call, &blob)) {
1488 * We don't use dcesrv_fault_disconnect()
1489 * here, because we don't want to set
1490 * DCERPC_PFC_FLAG_DID_NOT_EXECUTE
1492 dcesrv_call_disconnect_after(call,
1493 "dcesrv_auth_request - failed");
1494 return dcesrv_fault(call, DCERPC_FAULT_ACCESS_DENIED);
1498 /* see if this is a continued packet */
1499 if (call->pkt.ptype == DCERPC_PKT_REQUEST &&
1500 !(call->pkt.pfc_flags & DCERPC_PFC_FLAG_FIRST)) {
1501 struct dcesrv_call_state *call2 = call;
1502 uint32_t alloc_size;
1504 /* this is a continuation of an existing call - find the call
1505 then tack it on the end */
1506 call = dcesrv_find_fragmented_call(dce_conn, call2->pkt.call_id);
1508 return dcesrv_fault_disconnect(call2,
1509 DCERPC_NCA_S_PROTO_ERROR);
1512 if (call->pkt.ptype != call2->pkt.ptype) {
1513 /* trying to play silly buggers are we? */
1514 return dcesrv_fault_disconnect(call,
1515 DCERPC_NCA_S_PROTO_ERROR);
1517 if (memcmp(call->pkt.drep, call2->pkt.drep, sizeof(pkt->drep)) != 0) {
1518 return dcesrv_fault_disconnect(call,
1519 DCERPC_NCA_S_PROTO_ERROR);
1521 if (call->pkt.call_id != call2->pkt.call_id) {
1522 return dcesrv_fault_disconnect(call,
1523 DCERPC_NCA_S_PROTO_ERROR);
1525 if (call->pkt.u.request.context_id != call2->pkt.u.request.context_id) {
1526 return dcesrv_fault_disconnect(call,
1527 DCERPC_NCA_S_PROTO_ERROR);
1529 if (call->pkt.u.request.opnum != call2->pkt.u.request.opnum) {
1530 return dcesrv_fault_disconnect(call,
1531 DCERPC_NCA_S_PROTO_ERROR);
1534 alloc_size = call->pkt.u.request.stub_and_verifier.length +
1535 call2->pkt.u.request.stub_and_verifier.length;
1536 if (call->pkt.u.request.alloc_hint > alloc_size) {
1537 alloc_size = call->pkt.u.request.alloc_hint;
1540 call->pkt.u.request.stub_and_verifier.data =
1541 talloc_realloc(call,
1542 call->pkt.u.request.stub_and_verifier.data,
1543 uint8_t, alloc_size);
1544 if (!call->pkt.u.request.stub_and_verifier.data) {
1545 return dcesrv_fault(call2, DCERPC_FAULT_OTHER);
1547 memcpy(call->pkt.u.request.stub_and_verifier.data +
1548 call->pkt.u.request.stub_and_verifier.length,
1549 call2->pkt.u.request.stub_and_verifier.data,
1550 call2->pkt.u.request.stub_and_verifier.length);
1551 call->pkt.u.request.stub_and_verifier.length +=
1552 call2->pkt.u.request.stub_and_verifier.length;
1554 call->pkt.pfc_flags |= (call2->pkt.pfc_flags & DCERPC_PFC_FLAG_LAST);
1559 /* this may not be the last pdu in the chain - if its isn't then
1560 just put it on the incoming_fragmented_call_list and wait for the rest */
1561 if (call->pkt.ptype == DCERPC_PKT_REQUEST &&
1562 !(call->pkt.pfc_flags & DCERPC_PFC_FLAG_LAST)) {
1563 dcesrv_call_set_list(call, DCESRV_LIST_FRAGMENTED_CALL_LIST);
1564 return NT_STATUS_OK;
1567 /* This removes any fragments we may have had stashed away */
1568 dcesrv_call_set_list(call, DCESRV_LIST_NONE);
1570 switch (call->pkt.ptype) {
1571 case DCERPC_PKT_BIND:
1572 status = dcesrv_bind_nak(call,
1573 DCERPC_BIND_NAK_REASON_NOT_SPECIFIED);
1575 case DCERPC_PKT_AUTH3:
1576 status = dcesrv_auth3(call);
1578 case DCERPC_PKT_ALTER:
1579 status = dcesrv_alter(call);
1581 case DCERPC_PKT_REQUEST:
1582 status = dcesrv_request(call);
1585 status = dcesrv_fault_disconnect(call, DCERPC_NCA_S_PROTO_ERROR);
1589 /* if we are going to be sending a reply then add
1590 it to the list of pending calls. We add it to the end to keep the call
1591 list in the order we will answer */
1592 if (!NT_STATUS_IS_OK(status)) {
1599 _PUBLIC_ NTSTATUS dcesrv_init_context(TALLOC_CTX *mem_ctx,
1600 struct loadparm_context *lp_ctx,
1601 const char **endpoint_servers, struct dcesrv_context **_dce_ctx)
1604 struct dcesrv_context *dce_ctx;
1607 if (!endpoint_servers) {
1608 DEBUG(0,("dcesrv_init_context: no endpoint servers configured\n"));
1609 return NT_STATUS_INTERNAL_ERROR;
1612 dce_ctx = talloc_zero(mem_ctx, struct dcesrv_context);
1613 NT_STATUS_HAVE_NO_MEMORY(dce_ctx);
1615 if (uid_wrapper_enabled()) {
1616 setenv("UID_WRAPPER_MYUID", "1", 1);
1618 dce_ctx->initial_euid = geteuid();
1619 if (uid_wrapper_enabled()) {
1620 unsetenv("UID_WRAPPER_MYUID");
1623 dce_ctx->endpoint_list = NULL;
1624 dce_ctx->lp_ctx = lp_ctx;
1625 dce_ctx->assoc_groups_idr = idr_init(dce_ctx);
1626 NT_STATUS_HAVE_NO_MEMORY(dce_ctx->assoc_groups_idr);
1627 dce_ctx->broken_connections = NULL;
1629 for (i=0;endpoint_servers[i];i++) {
1630 const struct dcesrv_endpoint_server *ep_server;
1632 ep_server = dcesrv_ep_server_byname(endpoint_servers[i]);
1634 DEBUG(0,("dcesrv_init_context: failed to find endpoint server = '%s'\n", endpoint_servers[i]));
1635 return NT_STATUS_INTERNAL_ERROR;
1638 status = ep_server->init_server(dce_ctx, ep_server);
1639 if (!NT_STATUS_IS_OK(status)) {
1640 DEBUG(0,("dcesrv_init_context: failed to init endpoint server = '%s': %s\n", endpoint_servers[i],
1641 nt_errstr(status)));
1646 *_dce_ctx = dce_ctx;
1647 return NT_STATUS_OK;
1650 /* the list of currently registered DCERPC endpoint servers.
1652 static struct ep_server {
1653 struct dcesrv_endpoint_server *ep_server;
1654 } *ep_servers = NULL;
1655 static int num_ep_servers;
1658 register a DCERPC endpoint server.
1660 The 'name' can be later used by other backends to find the operations
1661 structure for this backend.
1663 The 'type' is used to specify whether this is for a disk, printer or IPC$ share
1665 _PUBLIC_ NTSTATUS dcerpc_register_ep_server(const void *_ep_server)
1667 const struct dcesrv_endpoint_server *ep_server = _ep_server;
1669 if (dcesrv_ep_server_byname(ep_server->name) != NULL) {
1670 /* its already registered! */
1671 DEBUG(0,("DCERPC endpoint server '%s' already registered\n",
1673 return NT_STATUS_OBJECT_NAME_COLLISION;
1676 ep_servers = realloc_p(ep_servers, struct ep_server, num_ep_servers+1);
1678 smb_panic("out of memory in dcerpc_register");
1681 ep_servers[num_ep_servers].ep_server = smb_xmemdup(ep_server, sizeof(*ep_server));
1682 ep_servers[num_ep_servers].ep_server->name = smb_xstrdup(ep_server->name);
1686 DEBUG(3,("DCERPC endpoint server '%s' registered\n",
1689 return NT_STATUS_OK;
1693 return the operations structure for a named backend of the specified type
1695 const struct dcesrv_endpoint_server *dcesrv_ep_server_byname(const char *name)
1699 for (i=0;i<num_ep_servers;i++) {
1700 if (strcmp(ep_servers[i].ep_server->name, name) == 0) {
1701 return ep_servers[i].ep_server;
1708 void dcerpc_server_init(struct loadparm_context *lp_ctx)
1710 static bool initialized;
1711 #define _MODULE_PROTO(init) extern NTSTATUS init(void);
1712 STATIC_dcerpc_server_MODULES_PROTO;
1713 init_module_fn static_init[] = { STATIC_dcerpc_server_MODULES };
1714 init_module_fn *shared_init;
1721 shared_init = load_samba_modules(NULL, "dcerpc_server");
1723 run_init_functions(static_init);
1724 run_init_functions(shared_init);
1726 talloc_free(shared_init);
1730 return the DCERPC module version, and the size of some critical types
1731 This can be used by endpoint server modules to either detect compilation errors, or provide
1732 multiple implementations for different smbd compilation options in one module
1734 const struct dcesrv_critical_sizes *dcerpc_module_version(void)
1736 static const struct dcesrv_critical_sizes critical_sizes = {
1737 DCERPC_MODULE_VERSION,
1738 sizeof(struct dcesrv_context),
1739 sizeof(struct dcesrv_endpoint),
1740 sizeof(struct dcesrv_endpoint_server),
1741 sizeof(struct dcesrv_interface),
1742 sizeof(struct dcesrv_if_list),
1743 sizeof(struct dcesrv_connection),
1744 sizeof(struct dcesrv_call_state),
1745 sizeof(struct dcesrv_auth),
1746 sizeof(struct dcesrv_handle)
1749 return &critical_sizes;
1752 static void dcesrv_terminate_connection(struct dcesrv_connection *dce_conn, const char *reason)
1754 struct dcesrv_context *dce_ctx = dce_conn->dce_ctx;
1755 struct stream_connection *srv_conn;
1756 srv_conn = talloc_get_type(dce_conn->transport.private_data,
1757 struct stream_connection);
1759 dce_conn->allow_bind = false;
1760 dce_conn->allow_auth3 = false;
1761 dce_conn->allow_alter = false;
1762 dce_conn->allow_request = false;
1764 if (dce_conn->pending_call_list == NULL) {
1765 char *full_reason = talloc_asprintf(dce_conn, "dcesrv: %s", reason);
1767 DLIST_REMOVE(dce_ctx->broken_connections, dce_conn);
1768 stream_terminate_connection(srv_conn, full_reason ? full_reason : reason);
1772 if (dce_conn->terminate != NULL) {
1776 DEBUG(3,("dcesrv: terminating connection due to '%s' defered due to pending calls\n",
1778 dce_conn->terminate = talloc_strdup(dce_conn, reason);
1779 if (dce_conn->terminate == NULL) {
1780 dce_conn->terminate = "dcesrv: defered terminating connection - no memory";
1782 DLIST_ADD_END(dce_ctx->broken_connections, dce_conn);
1785 static void dcesrv_cleanup_broken_connections(struct dcesrv_context *dce_ctx)
1787 struct dcesrv_connection *cur, *next;
1789 next = dce_ctx->broken_connections;
1790 while (next != NULL) {
1794 if (cur->state_flags & DCESRV_CALL_STATE_FLAG_PROCESS_PENDING_CALL) {
1795 struct dcesrv_connection_context *context_cur, *context_next;
1797 context_next = cur->contexts;
1798 while (context_next != NULL) {
1799 context_cur = context_next;
1800 context_next = context_cur->next;
1802 dcesrv_connection_context_destructor(context_cur);
1806 dcesrv_terminate_connection(cur, cur->terminate);
1810 /* We need this include to be able to compile on some plateforms
1811 * (ie. freebsd 7.2) as it seems that <sys/uio.h> is not included
1813 * It has to be that deep because otherwise we have a conflict on
1814 * const struct dcesrv_interface declaration.
1815 * This is mostly due to socket_wrapper defining #define bind swrap_bind
1816 * which conflict with the bind used before.
1818 #include "system/network.h"
1820 struct dcesrv_sock_reply_state {
1821 struct dcesrv_connection *dce_conn;
1822 struct dcesrv_call_state *call;
1826 static void dcesrv_sock_reply_done(struct tevent_req *subreq);
1827 static void dcesrv_call_terminate_step1(struct tevent_req *subreq);
1829 static void dcesrv_sock_report_output_data(struct dcesrv_connection *dce_conn)
1831 struct dcesrv_call_state *call;
1833 call = dce_conn->call_list;
1834 if (!call || !call->replies) {
1838 while (call->replies) {
1839 struct data_blob_list_item *rep = call->replies;
1840 struct dcesrv_sock_reply_state *substate;
1841 struct tevent_req *subreq;
1843 substate = talloc_zero(call, struct dcesrv_sock_reply_state);
1845 dcesrv_terminate_connection(dce_conn, "no memory");
1849 substate->dce_conn = dce_conn;
1850 substate->call = NULL;
1852 DLIST_REMOVE(call->replies, rep);
1854 if (call->replies == NULL && call->terminate_reason == NULL) {
1855 substate->call = call;
1858 substate->iov.iov_base = (void *) rep->blob.data;
1859 substate->iov.iov_len = rep->blob.length;
1861 subreq = tstream_writev_queue_send(substate,
1862 dce_conn->event_ctx,
1864 dce_conn->send_queue,
1867 dcesrv_terminate_connection(dce_conn, "no memory");
1870 tevent_req_set_callback(subreq, dcesrv_sock_reply_done,
1874 if (call->terminate_reason != NULL) {
1875 struct tevent_req *subreq;
1877 subreq = tevent_queue_wait_send(call,
1878 dce_conn->event_ctx,
1879 dce_conn->send_queue);
1881 dcesrv_terminate_connection(dce_conn, __location__);
1884 tevent_req_set_callback(subreq, dcesrv_call_terminate_step1,
1888 DLIST_REMOVE(call->conn->call_list, call);
1889 call->list = DCESRV_LIST_NONE;
1892 static void dcesrv_sock_reply_done(struct tevent_req *subreq)
1894 struct dcesrv_sock_reply_state *substate = tevent_req_callback_data(subreq,
1895 struct dcesrv_sock_reply_state);
1899 struct dcesrv_call_state *call = substate->call;
1901 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1902 TALLOC_FREE(subreq);
1904 status = map_nt_error_from_unix_common(sys_errno);
1905 dcesrv_terminate_connection(substate->dce_conn, nt_errstr(status));
1909 talloc_free(substate);
1915 static void dcesrv_call_terminate_step2(struct tevent_req *subreq);
1917 static void dcesrv_call_terminate_step1(struct tevent_req *subreq)
1919 struct dcesrv_call_state *call = tevent_req_callback_data(subreq,
1920 struct dcesrv_call_state);
1924 /* make sure we stop send queue before removing subreq */
1925 tevent_queue_stop(call->conn->send_queue);
1927 ok = tevent_queue_wait_recv(subreq);
1928 TALLOC_FREE(subreq);
1930 dcesrv_terminate_connection(call->conn, __location__);
1934 /* disconnect after 200 usecs */
1935 tv = timeval_current_ofs_usec(200);
1936 subreq = tevent_wakeup_send(call, call->conn->event_ctx, tv);
1937 if (subreq == NULL) {
1938 dcesrv_terminate_connection(call->conn, __location__);
1941 tevent_req_set_callback(subreq, dcesrv_call_terminate_step2,
1945 static void dcesrv_call_terminate_step2(struct tevent_req *subreq)
1947 struct dcesrv_call_state *call = tevent_req_callback_data(subreq,
1948 struct dcesrv_call_state);
1951 ok = tevent_wakeup_recv(subreq);
1952 TALLOC_FREE(subreq);
1954 dcesrv_terminate_connection(call->conn, __location__);
1958 dcesrv_terminate_connection(call->conn, call->terminate_reason);
1961 struct dcesrv_socket_context {
1962 const struct dcesrv_endpoint *endpoint;
1963 struct dcesrv_context *dcesrv_ctx;
1967 static void dcesrv_read_fragment_done(struct tevent_req *subreq);
1969 static void dcesrv_sock_accept(struct stream_connection *srv_conn)
1972 struct dcesrv_socket_context *dcesrv_sock =
1973 talloc_get_type(srv_conn->private_data, struct dcesrv_socket_context);
1974 enum dcerpc_transport_t transport =
1975 dcerpc_binding_get_transport(dcesrv_sock->endpoint->ep_description);
1976 struct dcesrv_connection *dcesrv_conn = NULL;
1978 struct tevent_req *subreq;
1979 struct loadparm_context *lp_ctx = dcesrv_sock->dcesrv_ctx->lp_ctx;
1981 dcesrv_cleanup_broken_connections(dcesrv_sock->dcesrv_ctx);
1983 if (!srv_conn->session_info) {
1984 status = auth_anonymous_session_info(srv_conn,
1986 &srv_conn->session_info);
1987 if (!NT_STATUS_IS_OK(status)) {
1988 DEBUG(0,("dcesrv_sock_accept: auth_anonymous_session_info failed: %s\n",
1989 nt_errstr(status)));
1990 stream_terminate_connection(srv_conn, nt_errstr(status));
1995 status = dcesrv_endpoint_connect(dcesrv_sock->dcesrv_ctx,
1997 dcesrv_sock->endpoint,
1998 srv_conn->session_info,
1999 srv_conn->event.ctx,
2001 srv_conn->server_id,
2002 DCESRV_CALL_STATE_FLAG_MAY_ASYNC,
2004 if (!NT_STATUS_IS_OK(status)) {
2005 DEBUG(0,("dcesrv_sock_accept: dcesrv_endpoint_connect failed: %s\n",
2006 nt_errstr(status)));
2007 stream_terminate_connection(srv_conn, nt_errstr(status));
2011 dcesrv_conn->transport.private_data = srv_conn;
2012 dcesrv_conn->transport.report_output_data = dcesrv_sock_report_output_data;
2014 TALLOC_FREE(srv_conn->event.fde);
2016 dcesrv_conn->send_queue = tevent_queue_create(dcesrv_conn, "dcesrv send queue");
2017 if (!dcesrv_conn->send_queue) {
2018 status = NT_STATUS_NO_MEMORY;
2019 DEBUG(0,("dcesrv_sock_accept: tevent_queue_create(%s)\n",
2020 nt_errstr(status)));
2021 stream_terminate_connection(srv_conn, nt_errstr(status));
2025 if (transport == NCACN_NP) {
2026 dcesrv_conn->auth_state.session_key = dcesrv_inherited_session_key;
2027 dcesrv_conn->stream = talloc_move(dcesrv_conn,
2028 &srv_conn->tstream);
2030 ret = tstream_bsd_existing_socket(dcesrv_conn,
2031 socket_get_fd(srv_conn->socket),
2032 &dcesrv_conn->stream);
2034 status = map_nt_error_from_unix_common(errno);
2035 DEBUG(0, ("dcesrv_sock_accept: "
2036 "failed to setup tstream: %s\n",
2037 nt_errstr(status)));
2038 stream_terminate_connection(srv_conn, nt_errstr(status));
2041 socket_set_flags(srv_conn->socket, SOCKET_FLAG_NOCLOSE);
2044 dcesrv_conn->local_address = srv_conn->local_address;
2045 dcesrv_conn->remote_address = srv_conn->remote_address;
2047 if (transport == NCALRPC) {
2051 ret = getpeereid(socket_get_fd(srv_conn->socket), &uid, &gid);
2053 status = map_nt_error_from_unix_common(errno);
2054 DEBUG(0, ("dcesrv_sock_accept: "
2055 "getpeereid() failed for NCALRPC: %s\n",
2056 nt_errstr(status)));
2057 stream_terminate_connection(srv_conn, nt_errstr(status));
2060 if (uid == dcesrv_conn->dce_ctx->initial_euid) {
2061 struct tsocket_address *r = NULL;
2063 ret = tsocket_address_unix_from_path(dcesrv_conn,
2064 "/root/ncalrpc_as_system",
2067 status = map_nt_error_from_unix_common(errno);
2068 DEBUG(0, ("dcesrv_sock_accept: "
2069 "tsocket_address_unix_from_path() failed for NCALRPC: %s\n",
2070 nt_errstr(status)));
2071 stream_terminate_connection(srv_conn, nt_errstr(status));
2074 dcesrv_conn->remote_address = r;
2078 srv_conn->private_data = dcesrv_conn;
2080 irpc_add_name(srv_conn->msg_ctx, "rpc_server");
2082 subreq = dcerpc_read_ncacn_packet_send(dcesrv_conn,
2083 dcesrv_conn->event_ctx,
2084 dcesrv_conn->stream);
2086 status = NT_STATUS_NO_MEMORY;
2087 DEBUG(0,("dcesrv_sock_accept: dcerpc_read_fragment_buffer_send(%s)\n",
2088 nt_errstr(status)));
2089 stream_terminate_connection(srv_conn, nt_errstr(status));
2092 tevent_req_set_callback(subreq, dcesrv_read_fragment_done, dcesrv_conn);
2097 static void dcesrv_read_fragment_done(struct tevent_req *subreq)
2099 struct dcesrv_connection *dce_conn = tevent_req_callback_data(subreq,
2100 struct dcesrv_connection);
2101 struct dcesrv_context *dce_ctx = dce_conn->dce_ctx;
2102 struct ncacn_packet *pkt;
2106 if (dce_conn->terminate) {
2108 * if the current connection is broken
2109 * we need to clean it up before any other connection
2111 dcesrv_terminate_connection(dce_conn, dce_conn->terminate);
2112 dcesrv_cleanup_broken_connections(dce_ctx);
2116 dcesrv_cleanup_broken_connections(dce_ctx);
2118 status = dcerpc_read_ncacn_packet_recv(subreq, dce_conn,
2120 TALLOC_FREE(subreq);
2121 if (!NT_STATUS_IS_OK(status)) {
2122 dcesrv_terminate_connection(dce_conn, nt_errstr(status));
2126 status = dcesrv_process_ncacn_packet(dce_conn, pkt, buffer);
2127 if (!NT_STATUS_IS_OK(status)) {
2128 dcesrv_terminate_connection(dce_conn, nt_errstr(status));
2132 subreq = dcerpc_read_ncacn_packet_send(dce_conn,
2133 dce_conn->event_ctx,
2136 status = NT_STATUS_NO_MEMORY;
2137 dcesrv_terminate_connection(dce_conn, nt_errstr(status));
2140 tevent_req_set_callback(subreq, dcesrv_read_fragment_done, dce_conn);
2143 static void dcesrv_sock_recv(struct stream_connection *conn, uint16_t flags)
2145 struct dcesrv_connection *dce_conn = talloc_get_type(conn->private_data,
2146 struct dcesrv_connection);
2147 dcesrv_terminate_connection(dce_conn, "dcesrv_sock_recv triggered");
2150 static void dcesrv_sock_send(struct stream_connection *conn, uint16_t flags)
2152 struct dcesrv_connection *dce_conn = talloc_get_type(conn->private_data,
2153 struct dcesrv_connection);
2154 dcesrv_terminate_connection(dce_conn, "dcesrv_sock_send triggered");
2158 static const struct stream_server_ops dcesrv_stream_ops = {
2160 .accept_connection = dcesrv_sock_accept,
2161 .recv_handler = dcesrv_sock_recv,
2162 .send_handler = dcesrv_sock_send,
2165 static NTSTATUS dcesrv_add_ep_unix(struct dcesrv_context *dce_ctx,
2166 struct loadparm_context *lp_ctx,
2167 struct dcesrv_endpoint *e,
2168 struct tevent_context *event_ctx, const struct model_ops *model_ops)
2170 struct dcesrv_socket_context *dcesrv_sock;
2173 const char *endpoint;
2175 dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
2176 NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
2178 /* remember the endpoint of this socket */
2179 dcesrv_sock->endpoint = e;
2180 dcesrv_sock->dcesrv_ctx = talloc_reference(dcesrv_sock, dce_ctx);
2182 endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
2184 status = stream_setup_socket(dcesrv_sock, event_ctx, lp_ctx,
2185 model_ops, &dcesrv_stream_ops,
2186 "unix", endpoint, &port,
2187 lpcfg_socket_options(lp_ctx),
2189 if (!NT_STATUS_IS_OK(status)) {
2190 DEBUG(0,("service_setup_stream_socket(path=%s) failed - %s\n",
2191 endpoint, nt_errstr(status)));
2197 static NTSTATUS dcesrv_add_ep_ncalrpc(struct dcesrv_context *dce_ctx,
2198 struct loadparm_context *lp_ctx,
2199 struct dcesrv_endpoint *e,
2200 struct tevent_context *event_ctx, const struct model_ops *model_ops)
2202 struct dcesrv_socket_context *dcesrv_sock;
2206 const char *endpoint;
2208 endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
2210 if (endpoint == NULL) {
2212 * No identifier specified: use DEFAULT.
2214 * TODO: DO NOT hardcode this value anywhere else. Rather, specify
2215 * no endpoint and let the epmapper worry about it.
2217 endpoint = "DEFAULT";
2218 status = dcerpc_binding_set_string_option(e->ep_description,
2221 if (!NT_STATUS_IS_OK(status)) {
2222 DEBUG(0,("dcerpc_binding_set_string_option() failed - %s\n",
2223 nt_errstr(status)));
2228 full_path = talloc_asprintf(dce_ctx, "%s/%s", lpcfg_ncalrpc_dir(lp_ctx),
2231 dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
2232 NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
2234 /* remember the endpoint of this socket */
2235 dcesrv_sock->endpoint = e;
2236 dcesrv_sock->dcesrv_ctx = talloc_reference(dcesrv_sock, dce_ctx);
2238 status = stream_setup_socket(dcesrv_sock, event_ctx, lp_ctx,
2239 model_ops, &dcesrv_stream_ops,
2240 "unix", full_path, &port,
2241 lpcfg_socket_options(lp_ctx),
2243 if (!NT_STATUS_IS_OK(status)) {
2244 DEBUG(0,("service_setup_stream_socket(identifier=%s,path=%s) failed - %s\n",
2245 endpoint, full_path, nt_errstr(status)));
2250 static NTSTATUS dcesrv_add_ep_np(struct dcesrv_context *dce_ctx,
2251 struct loadparm_context *lp_ctx,
2252 struct dcesrv_endpoint *e,
2253 struct tevent_context *event_ctx, const struct model_ops *model_ops)
2255 struct dcesrv_socket_context *dcesrv_sock;
2257 const char *endpoint;
2259 endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
2260 if (endpoint == NULL) {
2261 DEBUG(0, ("Endpoint mandatory for named pipes\n"));
2262 return NT_STATUS_INVALID_PARAMETER;
2265 dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
2266 NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
2268 /* remember the endpoint of this socket */
2269 dcesrv_sock->endpoint = e;
2270 dcesrv_sock->dcesrv_ctx = talloc_reference(dcesrv_sock, dce_ctx);
2272 status = tstream_setup_named_pipe(dce_ctx, event_ctx, lp_ctx,
2273 model_ops, &dcesrv_stream_ops,
2276 if (!NT_STATUS_IS_OK(status)) {
2277 DEBUG(0,("stream_setup_named_pipe(pipe=%s) failed - %s\n",
2278 endpoint, nt_errstr(status)));
2282 return NT_STATUS_OK;
2286 add a socket address to the list of events, one event per dcerpc endpoint
2288 static NTSTATUS add_socket_rpc_tcp_iface(struct dcesrv_context *dce_ctx, struct dcesrv_endpoint *e,
2289 struct tevent_context *event_ctx, const struct model_ops *model_ops,
2290 const char *address)
2292 struct dcesrv_socket_context *dcesrv_sock;
2295 const char *endpoint;
2298 endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
2299 if (endpoint != NULL) {
2300 port = atoi(endpoint);
2303 dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
2304 NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
2306 /* remember the endpoint of this socket */
2307 dcesrv_sock->endpoint = e;
2308 dcesrv_sock->dcesrv_ctx = talloc_reference(dcesrv_sock, dce_ctx);
2310 status = stream_setup_socket(dcesrv_sock, event_ctx, dce_ctx->lp_ctx,
2311 model_ops, &dcesrv_stream_ops,
2312 "ip", address, &port,
2313 lpcfg_socket_options(dce_ctx->lp_ctx),
2315 if (!NT_STATUS_IS_OK(status)) {
2316 DEBUG(0,("service_setup_stream_socket(address=%s,port=%u) failed - %s\n",
2317 address, port, nt_errstr(status)));
2321 snprintf(port_str, sizeof(port_str), "%u", port);
2323 status = dcerpc_binding_set_string_option(e->ep_description,
2324 "endpoint", port_str);
2325 if (!NT_STATUS_IS_OK(status)) {
2326 DEBUG(0,("dcerpc_binding_set_string_option(endpoint, %s) failed - %s\n",
2327 port_str, nt_errstr(status)));
2331 return NT_STATUS_OK;
2334 #include "lib/socket/netif.h" /* Included here to work around the fact that socket_wrapper redefines bind() */
2336 static NTSTATUS dcesrv_add_ep_tcp(struct dcesrv_context *dce_ctx,
2337 struct loadparm_context *lp_ctx,
2338 struct dcesrv_endpoint *e,
2339 struct tevent_context *event_ctx, const struct model_ops *model_ops)
2343 /* Add TCP/IP sockets */
2344 if (lpcfg_interfaces(lp_ctx) && lpcfg_bind_interfaces_only(lp_ctx)) {
2347 struct interface *ifaces;
2349 load_interface_list(dce_ctx, lp_ctx, &ifaces);
2351 num_interfaces = iface_list_count(ifaces);
2352 for(i = 0; i < num_interfaces; i++) {
2353 const char *address = iface_list_n_ip(ifaces, i);
2354 status = add_socket_rpc_tcp_iface(dce_ctx, e, event_ctx, model_ops, address);
2355 NT_STATUS_NOT_OK_RETURN(status);
2361 wcard = iface_list_wildcard(dce_ctx);
2362 NT_STATUS_HAVE_NO_MEMORY(wcard);
2363 for (i=0; wcard[i]; i++) {
2364 status = add_socket_rpc_tcp_iface(dce_ctx, e, event_ctx, model_ops, wcard[i]);
2365 if (NT_STATUS_IS_OK(status)) {
2370 if (num_binds == 0) {
2371 return NT_STATUS_INVALID_PARAMETER_MIX;
2375 return NT_STATUS_OK;
2378 NTSTATUS dcesrv_add_ep(struct dcesrv_context *dce_ctx,
2379 struct loadparm_context *lp_ctx,
2380 struct dcesrv_endpoint *e,
2381 struct tevent_context *event_ctx,
2382 const struct model_ops *model_ops)
2384 enum dcerpc_transport_t transport =
2385 dcerpc_binding_get_transport(e->ep_description);
2387 switch (transport) {
2388 case NCACN_UNIX_STREAM:
2389 return dcesrv_add_ep_unix(dce_ctx, lp_ctx, e, event_ctx, model_ops);
2392 return dcesrv_add_ep_ncalrpc(dce_ctx, lp_ctx, e, event_ctx, model_ops);
2395 return dcesrv_add_ep_tcp(dce_ctx, lp_ctx, e, event_ctx, model_ops);
2398 return dcesrv_add_ep_np(dce_ctx, lp_ctx, e, event_ctx, model_ops);
2401 return NT_STATUS_NOT_SUPPORTED;
2407 * retrieve credentials from a dce_call
2409 _PUBLIC_ struct cli_credentials *dcesrv_call_credentials(struct dcesrv_call_state *dce_call)
2411 return dce_call->conn->auth_state.session_info->credentials;
2415 * returns true if this is an authenticated call
2417 _PUBLIC_ bool dcesrv_call_authenticated(struct dcesrv_call_state *dce_call)
2419 enum security_user_level level;
2420 level = security_session_user_level(dce_call->conn->auth_state.session_info, NULL);
2421 return level >= SECURITY_USER;
2425 * retrieve account_name for a dce_call
2427 _PUBLIC_ const char *dcesrv_call_account_name(struct dcesrv_call_state *dce_call)
2429 return dce_call->context->conn->auth_state.session_info->info->account_name;