2 Unix SMB/CIFS implementation.
4 Samba internal messaging functions
6 Copyright (C) Andrew Tridgell 2004
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "lib/events/events.h"
24 #include "system/filesys.h"
25 #include "messaging/messaging.h"
26 #include "../lib/util/dlinklist.h"
27 #include "lib/socket/socket.h"
28 #include "librpc/gen_ndr/ndr_irpc.h"
29 #include "lib/messaging/irpc.h"
31 #include "../lib/util/unix_privs.h"
32 #include "librpc/rpc/dcerpc.h"
33 #include "../tdb/include/tdb.h"
34 #include "../lib/util/util_tdb.h"
35 #include "cluster/cluster.h"
36 #include "../lib/util/tevent_ntstatus.h"
38 /* change the message version with any incompatible changes in the protocol */
39 #define MESSAGING_VERSION 1
45 struct messaging_context *msg_ctx;
48 void (*handler)(struct irpc_request *irpc, struct irpc_message *m);
53 struct messaging_context {
54 struct server_id server_id;
55 struct socket_context *sock;
56 const char *base_path;
58 struct dispatch_fn **dispatch;
60 struct idr_context *dispatch_tree;
61 struct messaging_rec *pending;
62 struct messaging_rec *retry_queue;
63 struct irpc_list *irpc;
64 struct idr_context *idr;
66 struct timeval start_time;
67 struct tevent_timer *retry_te;
69 struct tevent_context *ev;
70 struct tevent_fd *fde;
74 /* we have a linked list of dispatch handlers for each msg_type that
75 this messaging server can deal with */
77 struct dispatch_fn *next, *prev;
83 /* an individual message */
84 struct messaging_rec {
85 struct messaging_rec *next, *prev;
86 struct messaging_context *msg;
89 struct messaging_header {
92 struct server_id from;
102 static void irpc_handler(struct messaging_context *, void *,
103 uint32_t, struct server_id, DATA_BLOB *);
107 A useful function for testing the message system.
109 static void ping_message(struct messaging_context *msg, void *private_data,
110 uint32_t msg_type, struct server_id src, DATA_BLOB *data)
112 DEBUG(1,("INFO: Received PING message from server %u.%u [%.*s]\n",
113 (unsigned int)src.node, (unsigned int)src.id, (int)data->length,
114 data->data?(const char *)data->data:""));
115 messaging_send(msg, src, MSG_PONG, data);
119 return uptime of messaging server via irpc
121 static NTSTATUS irpc_uptime(struct irpc_message *msg,
122 struct irpc_uptime *r)
124 struct messaging_context *ctx = talloc_get_type(msg->private_data, struct messaging_context);
125 *r->out.start_time = timeval_to_nttime(&ctx->start_time);
130 return the path to a messaging socket
132 static char *messaging_path(struct messaging_context *msg, struct server_id server_id)
134 TALLOC_CTX *tmp_ctx = talloc_new(msg);
135 const char *id = cluster_id_string(tmp_ctx, server_id);
140 s = talloc_asprintf(msg, "%s/msg.%s", msg->base_path, id);
141 talloc_steal(s, tmp_ctx);
146 dispatch a fully received message
148 note that this deliberately can match more than one message handler
149 per message. That allows a single messasging context to register
150 (for example) a debug handler for more than one piece of code
152 static void messaging_dispatch(struct messaging_context *msg, struct messaging_rec *rec)
154 struct dispatch_fn *d, *next;
156 /* temporary IDs use an idtree, the rest use a array of pointers */
157 if (rec->header->msg_type >= MSG_TMP_BASE) {
158 d = (struct dispatch_fn *)idr_find(msg->dispatch_tree,
159 rec->header->msg_type);
160 } else if (rec->header->msg_type < msg->num_types) {
161 d = msg->dispatch[rec->header->msg_type];
166 for (; d; d = next) {
169 data.data = rec->packet.data + sizeof(*rec->header);
170 data.length = rec->header->length;
171 d->fn(msg, d->private_data, d->msg_type, rec->header->from, &data);
173 rec->header->length = 0;
177 handler for messages that arrive from other nodes in the cluster
179 static void cluster_message_handler(struct messaging_context *msg, DATA_BLOB packet)
181 struct messaging_rec *rec;
183 rec = talloc(msg, struct messaging_rec);
185 smb_panic("Unable to allocate messaging_rec");
189 rec->path = msg->path;
190 rec->header = (struct messaging_header *)packet.data;
191 rec->packet = packet;
194 if (packet.length != sizeof(*rec->header) + rec->header->length) {
195 DEBUG(0,("messaging: bad message header size %d should be %d\n",
196 rec->header->length, (int)(packet.length - sizeof(*rec->header))));
201 messaging_dispatch(msg, rec);
208 try to send the message
210 static NTSTATUS try_send(struct messaging_rec *rec)
212 struct messaging_context *msg = rec->msg;
216 struct socket_address *path;
218 /* rec->path is the path of the *other* socket, where we want
220 path = socket_address_from_strings(msg, msg->sock->backend_name,
223 return NT_STATUS_NO_MEMORY;
226 /* we send with privileges so messages work from any context */
227 priv = root_privileges();
228 status = socket_sendto(msg->sock, &rec->packet, &nsent, path);
236 retry backed off messages
238 static void msg_retry_timer(struct tevent_context *ev, struct tevent_timer *te,
239 struct timeval t, void *private_data)
241 struct messaging_context *msg = talloc_get_type(private_data,
242 struct messaging_context);
243 msg->retry_te = NULL;
245 /* put the messages back on the main queue */
246 while (msg->retry_queue) {
247 struct messaging_rec *rec = msg->retry_queue;
248 DLIST_REMOVE(msg->retry_queue, rec);
249 DLIST_ADD_END(msg->pending, rec, struct messaging_rec *);
252 EVENT_FD_WRITEABLE(msg->event.fde);
256 handle a socket write event
258 static void messaging_send_handler(struct messaging_context *msg)
260 while (msg->pending) {
261 struct messaging_rec *rec = msg->pending;
263 status = try_send(rec);
264 if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
266 if (rec->retries > 3) {
267 /* we're getting continuous write errors -
268 backoff this record */
269 DLIST_REMOVE(msg->pending, rec);
270 DLIST_ADD_END(msg->retry_queue, rec,
271 struct messaging_rec *);
272 if (msg->retry_te == NULL) {
274 event_add_timed(msg->event.ev, msg,
275 timeval_current_ofs(1, 0),
276 msg_retry_timer, msg);
282 if (!NT_STATUS_IS_OK(status)) {
283 TALLOC_CTX *tmp_ctx = talloc_new(msg);
284 DEBUG(1,("messaging: Lost message from %s to %s of type %u - %s\n",
285 cluster_id_string(tmp_ctx, rec->header->from),
286 cluster_id_string(tmp_ctx, rec->header->to),
287 rec->header->msg_type,
289 talloc_free(tmp_ctx);
291 DLIST_REMOVE(msg->pending, rec);
294 if (msg->pending == NULL) {
295 EVENT_FD_NOT_WRITEABLE(msg->event.fde);
300 handle a new incoming packet
302 static void messaging_recv_handler(struct messaging_context *msg)
304 struct messaging_rec *rec;
309 /* see how many bytes are in the next packet */
310 status = socket_pending(msg->sock, &msize);
311 if (!NT_STATUS_IS_OK(status)) {
312 DEBUG(0,("socket_pending failed in messaging - %s\n",
317 packet = data_blob_talloc(msg, NULL, msize);
318 if (packet.data == NULL) {
319 /* assume this is temporary and retry */
323 status = socket_recv(msg->sock, packet.data, msize, &msize);
324 if (!NT_STATUS_IS_OK(status)) {
325 data_blob_free(&packet);
329 if (msize < sizeof(*rec->header)) {
330 DEBUG(0,("messaging: bad message of size %d\n", (int)msize));
331 data_blob_free(&packet);
335 rec = talloc(msg, struct messaging_rec);
337 smb_panic("Unable to allocate messaging_rec");
340 talloc_steal(rec, packet.data);
342 rec->path = msg->path;
343 rec->header = (struct messaging_header *)packet.data;
344 rec->packet = packet;
347 if (msize != sizeof(*rec->header) + rec->header->length) {
348 DEBUG(0,("messaging: bad message header size %d should be %d\n",
349 rec->header->length, (int)(msize - sizeof(*rec->header))));
354 messaging_dispatch(msg, rec);
360 handle a socket event
362 static void messaging_handler(struct tevent_context *ev, struct tevent_fd *fde,
363 uint16_t flags, void *private_data)
365 struct messaging_context *msg = talloc_get_type(private_data,
366 struct messaging_context);
367 if (flags & EVENT_FD_WRITE) {
368 messaging_send_handler(msg);
370 if (flags & EVENT_FD_READ) {
371 messaging_recv_handler(msg);
377 Register a dispatch function for a particular message type.
379 NTSTATUS messaging_register(struct messaging_context *msg, void *private_data,
380 uint32_t msg_type, msg_callback_t fn)
382 struct dispatch_fn *d;
384 /* possibly expand dispatch array */
385 if (msg_type >= msg->num_types) {
386 struct dispatch_fn **dp;
388 dp = talloc_realloc(msg, msg->dispatch, struct dispatch_fn *, msg_type+1);
389 NT_STATUS_HAVE_NO_MEMORY(dp);
391 for (i=msg->num_types;i<=msg_type;i++) {
392 msg->dispatch[i] = NULL;
394 msg->num_types = msg_type+1;
397 d = talloc_zero(msg->dispatch, struct dispatch_fn);
398 NT_STATUS_HAVE_NO_MEMORY(d);
399 d->msg_type = msg_type;
400 d->private_data = private_data;
403 DLIST_ADD(msg->dispatch[msg_type], d);
409 register a temporary message handler. The msg_type is allocated
412 NTSTATUS messaging_register_tmp(struct messaging_context *msg, void *private_data,
413 msg_callback_t fn, uint32_t *msg_type)
415 struct dispatch_fn *d;
418 d = talloc_zero(msg->dispatch, struct dispatch_fn);
419 NT_STATUS_HAVE_NO_MEMORY(d);
420 d->private_data = private_data;
423 id = idr_get_new_above(msg->dispatch_tree, d, MSG_TMP_BASE, UINT16_MAX);
426 return NT_STATUS_TOO_MANY_CONTEXT_IDS;
429 d->msg_type = (uint32_t)id;
430 (*msg_type) = d->msg_type;
436 De-register the function for a particular message type.
438 void messaging_deregister(struct messaging_context *msg, uint32_t msg_type, void *private_data)
440 struct dispatch_fn *d, *next;
442 if (msg_type >= msg->num_types) {
443 d = (struct dispatch_fn *)idr_find(msg->dispatch_tree,
446 idr_remove(msg->dispatch_tree, msg_type);
451 for (d = msg->dispatch[msg_type]; d; d = next) {
453 if (d->private_data == private_data) {
454 DLIST_REMOVE(msg->dispatch[msg_type], d);
461 Send a message to a particular server
463 NTSTATUS messaging_send(struct messaging_context *msg, struct server_id server,
464 uint32_t msg_type, const DATA_BLOB *data)
466 struct messaging_rec *rec;
468 size_t dlength = data?data->length:0;
470 rec = talloc(msg, struct messaging_rec);
472 return NT_STATUS_NO_MEMORY;
475 rec->packet = data_blob_talloc(rec, NULL, sizeof(*rec->header) + dlength);
476 if (rec->packet.data == NULL) {
478 return NT_STATUS_NO_MEMORY;
483 rec->header = (struct messaging_header *)rec->packet.data;
485 ZERO_STRUCTP(rec->header);
486 rec->header->version = MESSAGING_VERSION;
487 rec->header->msg_type = msg_type;
488 rec->header->from = msg->server_id;
489 rec->header->to = server;
490 rec->header->length = dlength;
492 memcpy(rec->packet.data + sizeof(*rec->header),
493 data->data, dlength);
496 if (!cluster_node_equal(&msg->server_id, &server)) {
497 /* the destination is on another node - dispatch via
499 status = cluster_message_send(server, &rec->packet);
504 rec->path = messaging_path(msg, server);
505 talloc_steal(rec, rec->path);
507 if (msg->pending != NULL) {
508 status = STATUS_MORE_ENTRIES;
510 status = try_send(rec);
513 if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
514 if (msg->pending == NULL) {
515 EVENT_FD_WRITEABLE(msg->event.fde);
517 DLIST_ADD_END(msg->pending, rec, struct messaging_rec *);
527 Send a message to a particular server, with the message containing a single pointer
529 NTSTATUS messaging_send_ptr(struct messaging_context *msg, struct server_id server,
530 uint32_t msg_type, void *ptr)
534 blob.data = (uint8_t *)&ptr;
535 blob.length = sizeof(void *);
537 return messaging_send(msg, server, msg_type, &blob);
542 destroy the messaging context
544 static int messaging_destructor(struct messaging_context *msg)
547 while (msg->names && msg->names[0]) {
548 irpc_remove_name(msg, msg->names[0]);
554 create the listening socket and setup the dispatcher
556 struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx,
558 struct server_id server_id,
559 struct tevent_context *ev)
561 struct messaging_context *msg;
563 struct socket_address *path;
569 msg = talloc_zero(mem_ctx, struct messaging_context);
574 /* setup a handler for messages from other cluster nodes, if appropriate */
575 status = cluster_message_init(msg, server_id, cluster_message_handler);
576 if (!NT_STATUS_IS_OK(status)) {
581 /* create the messaging directory if needed */
584 msg->base_path = talloc_reference(msg, dir);
585 msg->path = messaging_path(msg, server_id);
586 msg->server_id = server_id;
587 msg->idr = idr_init(msg);
588 msg->dispatch_tree = idr_init(msg);
589 msg->start_time = timeval_current();
591 status = socket_create("unix", SOCKET_TYPE_DGRAM, &msg->sock, 0);
592 if (!NT_STATUS_IS_OK(status)) {
597 /* by stealing here we ensure that the socket is cleaned up (and even
599 talloc_steal(msg, msg->sock);
601 path = socket_address_from_strings(msg, msg->sock->backend_name,
608 status = socket_listen(msg->sock, path, 50, 0);
609 if (!NT_STATUS_IS_OK(status)) {
610 DEBUG(0,("Unable to setup messaging listener for '%s':%s\n", msg->path, nt_errstr(status)));
615 /* it needs to be non blocking for sends */
616 set_blocking(socket_get_fd(msg->sock), false);
619 msg->event.fde = event_add_fd(ev, msg, socket_get_fd(msg->sock),
620 EVENT_FD_READ, messaging_handler, msg);
621 tevent_fd_set_auto_close(msg->event.fde);
623 talloc_set_destructor(msg, messaging_destructor);
625 messaging_register(msg, NULL, MSG_PING, ping_message);
626 messaging_register(msg, NULL, MSG_IRPC, irpc_handler);
627 IRPC_REGISTER(msg, irpc, IRPC_UPTIME, irpc_uptime, msg);
633 A hack, for the short term until we get 'client only' messaging in place
635 struct messaging_context *messaging_client_init(TALLOC_CTX *mem_ctx,
637 struct tevent_context *ev)
641 id.id = random() % 0x10000000;
642 return messaging_init(mem_ctx, dir, id, ev);
645 a list of registered irpc server functions
648 struct irpc_list *next, *prev;
650 const struct ndr_interface_table *table;
658 register a irpc server function
660 NTSTATUS irpc_register(struct messaging_context *msg_ctx,
661 const struct ndr_interface_table *table,
662 int callnum, irpc_function_t fn, void *private_data)
664 struct irpc_list *irpc;
666 /* override an existing handler, if any */
667 for (irpc=msg_ctx->irpc; irpc; irpc=irpc->next) {
668 if (irpc->table == table && irpc->callnum == callnum) {
673 irpc = talloc(msg_ctx, struct irpc_list);
674 NT_STATUS_HAVE_NO_MEMORY(irpc);
675 DLIST_ADD(msg_ctx->irpc, irpc);
679 irpc->callnum = callnum;
681 irpc->private_data = private_data;
682 irpc->uuid = irpc->table->syntax_id.uuid;
689 handle an incoming irpc reply message
691 static void irpc_handler_reply(struct messaging_context *msg_ctx, struct irpc_message *m)
693 struct irpc_request *irpc;
695 irpc = (struct irpc_request *)idr_find(msg_ctx->idr, m->header.callid);
696 if (irpc == NULL) return;
698 irpc->incoming.handler(irpc, m);
704 NTSTATUS irpc_send_reply(struct irpc_message *m, NTSTATUS status)
706 struct ndr_push *push;
708 enum ndr_err_code ndr_err;
710 m->header.status = status;
712 /* setup the reply */
713 push = ndr_push_init_ctx(m->ndr);
715 status = NT_STATUS_NO_MEMORY;
719 m->header.flags |= IRPC_FLAG_REPLY;
721 /* construct the packet */
722 ndr_err = ndr_push_irpc_header(push, NDR_SCALARS|NDR_BUFFERS, &m->header);
723 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
724 status = ndr_map_error2ntstatus(ndr_err);
728 ndr_err = m->irpc->table->calls[m->irpc->callnum].ndr_push(push, NDR_OUT, m->data);
729 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
730 status = ndr_map_error2ntstatus(ndr_err);
734 /* send the reply message */
735 packet = ndr_push_blob(push);
736 status = messaging_send(m->msg_ctx, m->from, MSG_IRPC, &packet);
737 if (!NT_STATUS_IS_OK(status)) goto failed;
745 handle an incoming irpc request message
747 static void irpc_handler_request(struct messaging_context *msg_ctx,
748 struct irpc_message *m)
752 enum ndr_err_code ndr_err;
754 for (i=msg_ctx->irpc; i; i=i->next) {
755 if (GUID_equal(&i->uuid, &m->header.uuid) &&
756 i->table->syntax_id.if_version == m->header.if_version &&
757 i->callnum == m->header.callnum) {
763 /* no registered handler for this message */
768 /* allocate space for the structure */
769 r = talloc_zero_size(m->ndr, i->table->calls[m->header.callnum].struct_size);
770 if (r == NULL) goto failed;
772 m->ndr->flags |= LIBNDR_FLAG_REF_ALLOC;
774 /* parse the request data */
775 ndr_err = i->table->calls[i->callnum].ndr_pull(m->ndr, NDR_IN, r);
776 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) goto failed;
779 m->private_data= i->private_data;
780 m->defer_reply = false;
782 m->msg_ctx = msg_ctx;
785 m->ev = msg_ctx->event.ev;
787 m->header.status = i->fn(m, r);
790 /* the server function won't ever be replying to this request */
795 if (m->defer_reply) {
796 /* the server function has asked to defer the reply to later */
797 talloc_steal(msg_ctx, m);
801 irpc_send_reply(m, m->header.status);
809 handle an incoming irpc message
811 static void irpc_handler(struct messaging_context *msg_ctx, void *private_data,
812 uint32_t msg_type, struct server_id src, DATA_BLOB *packet)
814 struct irpc_message *m;
815 enum ndr_err_code ndr_err;
817 m = talloc(msg_ctx, struct irpc_message);
818 if (m == NULL) goto failed;
822 m->ndr = ndr_pull_init_blob(packet, m);
823 if (m->ndr == NULL) goto failed;
825 m->ndr->flags |= LIBNDR_FLAG_REF_ALLOC;
827 ndr_err = ndr_pull_irpc_header(m->ndr, NDR_BUFFERS|NDR_SCALARS, &m->header);
828 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) goto failed;
830 if (m->header.flags & IRPC_FLAG_REPLY) {
831 irpc_handler_reply(msg_ctx, m);
833 irpc_handler_request(msg_ctx, m);
843 destroy a irpc request
845 static int irpc_destructor(struct irpc_request *irpc)
847 if (irpc->callid != -1) {
848 idr_remove(irpc->msg_ctx->idr, irpc->callid);
856 open the naming database
858 static struct tdb_wrap *irpc_namedb_open(struct messaging_context *msg_ctx)
861 char *path = talloc_asprintf(msg_ctx, "%s/names.tdb", msg_ctx->base_path);
865 t = tdb_wrap_open(msg_ctx, path, 0, 0, O_RDWR|O_CREAT, 0660);
872 add a string name that this irpc server can be called on
874 NTSTATUS irpc_add_name(struct messaging_context *msg_ctx, const char *name)
879 NTSTATUS status = NT_STATUS_OK;
881 t = irpc_namedb_open(msg_ctx);
882 NT_STATUS_HAVE_NO_MEMORY(t);
884 if (tdb_lock_bystring(t->tdb, name) != 0) {
886 return NT_STATUS_LOCK_NOT_GRANTED;
888 rec = tdb_fetch_bystring(t->tdb, name);
889 count = rec.dsize / sizeof(struct server_id);
890 rec.dptr = (unsigned char *)realloc_p(rec.dptr, struct server_id, count+1);
891 rec.dsize += sizeof(struct server_id);
892 if (rec.dptr == NULL) {
893 tdb_unlock_bystring(t->tdb, name);
895 return NT_STATUS_NO_MEMORY;
897 ((struct server_id *)rec.dptr)[count] = msg_ctx->server_id;
898 if (tdb_store_bystring(t->tdb, name, rec, 0) != 0) {
899 status = NT_STATUS_INTERNAL_ERROR;
902 tdb_unlock_bystring(t->tdb, name);
905 msg_ctx->names = str_list_add(msg_ctx->names, name);
906 talloc_steal(msg_ctx, msg_ctx->names);
912 return a list of server ids for a server name
914 struct server_id *irpc_servers_byname(struct messaging_context *msg_ctx,
921 struct server_id *ret;
923 t = irpc_namedb_open(msg_ctx);
928 if (tdb_lock_bystring(t->tdb, name) != 0) {
932 rec = tdb_fetch_bystring(t->tdb, name);
933 if (rec.dptr == NULL) {
934 tdb_unlock_bystring(t->tdb, name);
938 count = rec.dsize / sizeof(struct server_id);
939 ret = talloc_array(mem_ctx, struct server_id, count+1);
941 tdb_unlock_bystring(t->tdb, name);
945 for (i=0;i<count;i++) {
946 ret[i] = ((struct server_id *)rec.dptr)[i];
948 ret[i] = cluster_id(0, 0);
950 tdb_unlock_bystring(t->tdb, name);
957 remove a name from a messaging context
959 void irpc_remove_name(struct messaging_context *msg_ctx, const char *name)
964 struct server_id *ids;
966 str_list_remove(msg_ctx->names, name);
968 t = irpc_namedb_open(msg_ctx);
973 if (tdb_lock_bystring(t->tdb, name) != 0) {
977 rec = tdb_fetch_bystring(t->tdb, name);
978 if (rec.dptr == NULL) {
979 tdb_unlock_bystring(t->tdb, name);
983 count = rec.dsize / sizeof(struct server_id);
986 tdb_unlock_bystring(t->tdb, name);
990 ids = (struct server_id *)rec.dptr;
991 for (i=0;i<count;i++) {
992 if (cluster_id_equal(&ids[i], &msg_ctx->server_id)) {
994 memmove(ids+i, ids+i+1,
995 sizeof(struct server_id) * (count-(i+1)));
997 rec.dsize -= sizeof(struct server_id);
1001 tdb_store_bystring(t->tdb, name, rec, 0);
1003 tdb_unlock_bystring(t->tdb, name);
1007 struct server_id messaging_get_server_id(struct messaging_context *msg_ctx)
1009 return msg_ctx->server_id;
1012 struct irpc_bh_state {
1013 struct messaging_context *msg_ctx;
1014 struct server_id server_id;
1015 const struct ndr_interface_table *table;
1019 static bool irpc_bh_is_connected(struct dcerpc_binding_handle *h)
1021 struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
1022 struct irpc_bh_state);
1031 static uint32_t irpc_bh_set_timeout(struct dcerpc_binding_handle *h,
1034 struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
1035 struct irpc_bh_state);
1036 uint32_t old = hs->timeout;
1038 hs->timeout = timeout;
1043 struct irpc_bh_raw_call_state {
1044 struct irpc_request *irpc;
1047 DATA_BLOB in_packet;
1051 static void irpc_bh_raw_call_incoming_handler(struct irpc_request *irpc,
1052 struct irpc_message *m);
1054 static struct tevent_req *irpc_bh_raw_call_send(TALLOC_CTX *mem_ctx,
1055 struct tevent_context *ev,
1056 struct dcerpc_binding_handle *h,
1057 const struct GUID *object,
1060 const uint8_t *in_data,
1063 struct irpc_bh_state *hs =
1064 dcerpc_binding_handle_data(h,
1065 struct irpc_bh_state);
1066 struct tevent_req *req;
1067 struct irpc_bh_raw_call_state *state;
1069 struct irpc_header header;
1070 struct ndr_push *ndr;
1072 enum ndr_err_code ndr_err;
1074 req = tevent_req_create(mem_ctx, &state,
1075 struct irpc_bh_raw_call_state);
1079 state->opnum = opnum;
1080 state->in_data.data = discard_const_p(uint8_t, in_data);
1081 state->in_data.length = in_length;
1083 ok = irpc_bh_is_connected(h);
1085 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
1086 return tevent_req_post(req, ev);
1089 state->irpc = talloc_zero(state, struct irpc_request);
1090 if (tevent_req_nomem(state->irpc, req)) {
1091 return tevent_req_post(req, ev);
1094 state->irpc->msg_ctx = hs->msg_ctx;
1095 state->irpc->callid = idr_get_new(hs->msg_ctx->idr,
1096 state->irpc, UINT16_MAX);
1097 if (state->irpc->callid == -1) {
1098 tevent_req_nterror(req, NT_STATUS_INSUFFICIENT_RESOURCES);
1099 return tevent_req_post(req, ev);
1101 state->irpc->incoming.handler = irpc_bh_raw_call_incoming_handler;
1102 state->irpc->incoming.private_data = req;
1104 talloc_set_destructor(state->irpc, irpc_destructor);
1106 /* setup the header */
1107 header.uuid = hs->table->syntax_id.uuid;
1109 header.if_version = hs->table->syntax_id.if_version;
1110 header.callid = state->irpc->callid;
1111 header.callnum = state->opnum;
1113 header.status = NT_STATUS_OK;
1115 /* construct the irpc packet */
1116 ndr = ndr_push_init_ctx(state->irpc);
1117 if (tevent_req_nomem(ndr, req)) {
1118 return tevent_req_post(req, ev);
1121 ndr_err = ndr_push_irpc_header(ndr, NDR_SCALARS|NDR_BUFFERS, &header);
1122 status = ndr_map_error2ntstatus(ndr_err);
1123 if (!NT_STATUS_IS_OK(status)) {
1124 tevent_req_nterror(req, status);
1125 return tevent_req_post(req, ev);
1128 ndr_err = ndr_push_bytes(ndr, in_data, in_length);
1129 status = ndr_map_error2ntstatus(ndr_err);
1130 if (!NT_STATUS_IS_OK(status)) {
1131 tevent_req_nterror(req, status);
1132 return tevent_req_post(req, ev);
1136 state->in_packet = ndr_push_blob(ndr);
1137 status = messaging_send(hs->msg_ctx, hs->server_id,
1138 MSG_IRPC, &state->in_packet);
1139 if (!NT_STATUS_IS_OK(status)) {
1140 tevent_req_nterror(req, status);
1141 return tevent_req_post(req, ev);
1144 if (hs->timeout != IRPC_CALL_TIMEOUT_INF) {
1145 /* set timeout-callback in case caller wants that */
1146 ok = tevent_req_set_endtime(req, ev, timeval_current_ofs(hs->timeout, 0));
1148 return tevent_req_post(req, ev);
1155 static void irpc_bh_raw_call_incoming_handler(struct irpc_request *irpc,
1156 struct irpc_message *m)
1158 struct tevent_req *req =
1159 talloc_get_type_abort(irpc->incoming.private_data,
1161 struct irpc_bh_raw_call_state *state =
1162 tevent_req_data(req,
1163 struct irpc_bh_raw_call_state);
1165 talloc_steal(state, m);
1167 if (!NT_STATUS_IS_OK(m->header.status)) {
1168 tevent_req_nterror(req, m->header.status);
1172 state->out_data = data_blob_talloc(state,
1173 m->ndr->data + m->ndr->offset,
1174 m->ndr->data_size - m->ndr->offset);
1175 if ((m->ndr->data_size - m->ndr->offset) > 0 && !state->out_data.data) {
1176 tevent_req_nomem(NULL, req);
1180 tevent_req_done(req);
1183 static NTSTATUS irpc_bh_raw_call_recv(struct tevent_req *req,
1184 TALLOC_CTX *mem_ctx,
1187 uint32_t *out_flags)
1189 struct irpc_bh_raw_call_state *state =
1190 tevent_req_data(req,
1191 struct irpc_bh_raw_call_state);
1194 if (tevent_req_is_nterror(req, &status)) {
1195 tevent_req_received(req);
1199 *out_data = talloc_move(mem_ctx, &state->out_data.data);
1200 *out_length = state->out_data.length;
1202 tevent_req_received(req);
1203 return NT_STATUS_OK;
1206 struct irpc_bh_disconnect_state {
1210 static struct tevent_req *irpc_bh_disconnect_send(TALLOC_CTX *mem_ctx,
1211 struct tevent_context *ev,
1212 struct dcerpc_binding_handle *h)
1214 struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
1215 struct irpc_bh_state);
1216 struct tevent_req *req;
1217 struct irpc_bh_disconnect_state *state;
1220 req = tevent_req_create(mem_ctx, &state,
1221 struct irpc_bh_disconnect_state);
1226 ok = irpc_bh_is_connected(h);
1228 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
1229 return tevent_req_post(req, ev);
1234 tevent_req_done(req);
1235 return tevent_req_post(req, ev);
1238 static NTSTATUS irpc_bh_disconnect_recv(struct tevent_req *req)
1242 if (tevent_req_is_nterror(req, &status)) {
1243 tevent_req_received(req);
1247 tevent_req_received(req);
1248 return NT_STATUS_OK;
1251 static bool irpc_bh_ref_alloc(struct dcerpc_binding_handle *h)
1256 static const struct dcerpc_binding_handle_ops irpc_bh_ops = {
1258 .is_connected = irpc_bh_is_connected,
1259 .set_timeout = irpc_bh_set_timeout,
1260 .raw_call_send = irpc_bh_raw_call_send,
1261 .raw_call_recv = irpc_bh_raw_call_recv,
1262 .disconnect_send = irpc_bh_disconnect_send,
1263 .disconnect_recv = irpc_bh_disconnect_recv,
1265 .ref_alloc = irpc_bh_ref_alloc,
1268 /* initialise a irpc binding handle */
1269 struct dcerpc_binding_handle *irpc_binding_handle(TALLOC_CTX *mem_ctx,
1270 struct messaging_context *msg_ctx,
1271 struct server_id server_id,
1272 const struct ndr_interface_table *table)
1274 struct dcerpc_binding_handle *h;
1275 struct irpc_bh_state *hs;
1277 h = dcerpc_binding_handle_create(mem_ctx,
1282 struct irpc_bh_state,
1287 hs->msg_ctx = msg_ctx;
1288 hs->server_id = server_id;
1290 hs->timeout = IRPC_CALL_TIMEOUT;
1292 dcerpc_binding_handle_set_sync_ev(h, msg_ctx->event.ev);
1297 struct dcerpc_binding_handle *irpc_binding_handle_by_name(TALLOC_CTX *mem_ctx,
1298 struct messaging_context *msg_ctx,
1299 const char *dest_task,
1300 const struct ndr_interface_table *table)
1302 struct dcerpc_binding_handle *h;
1303 struct server_id *sids;
1304 struct server_id sid;
1306 /* find the server task */
1307 sids = irpc_servers_byname(msg_ctx, mem_ctx, dest_task);
1309 errno = EADDRNOTAVAIL;
1312 if (sids[0].id == 0) {
1314 errno = EADDRNOTAVAIL;
1320 h = irpc_binding_handle(mem_ctx, msg_ctx,