2 Unix SMB/Netbios implementation.
3 Generic infrstructure for RPC Daemons
4 Copyright (C) Simo Sorce 2010
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "rpc_server/rpc_server.h"
23 #include "librpc/gen_ndr/netlogon.h"
24 #include "librpc/gen_ndr/auth.h"
25 #include "registry/reg_parse_prs.h"
26 #include "lib/tsocket/tsocket.h"
27 #include "libcli/named_pipe_auth/npa_tstream.h"
28 #include "../auth/auth_sam_reply.h"
30 #define SERVER_TCP_LOW_PORT 1024
31 #define SERVER_TCP_HIGH_PORT 1300
33 static NTSTATUS auth_anonymous_session_info(TALLOC_CTX *mem_ctx,
34 struct auth_session_info_transport **session_info)
36 struct auth_session_info_transport *i;
37 struct auth_serversupplied_info *s;
38 struct auth_user_info_dc *u;
39 union netr_Validation val;
42 i = talloc_zero(mem_ctx, struct auth_session_info_transport);
44 return NT_STATUS_NO_MEMORY;
47 status = make_server_info_guest(i, &s);
48 if (!NT_STATUS_IS_OK(status)) {
52 i->security_token = s->security_token;
53 i->session_key = s->user_session_key;
57 status = make_user_info_dc_netlogon_validation(mem_ctx,
62 if (!NT_STATUS_IS_OK(status)) {
63 DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
66 i->info = talloc_move(i, &u->info);
74 /* Creates a pipes_struct and initializes it with the information
75 * sent from the client */
76 static int make_server_pipes_struct(TALLOC_CTX *mem_ctx,
77 const char *pipe_name,
78 const struct ndr_syntax_id id,
79 enum dcerpc_transport_t transport,
80 bool ncalrpc_as_system,
81 const char *client_address,
82 const char *server_address,
83 struct auth_session_info_transport *session_info,
84 struct pipes_struct **_p,
87 struct netr_SamInfo3 *info3;
88 struct auth_user_info_dc *auth_user_info_dc;
89 struct pipes_struct *p;
93 p = talloc_zero(mem_ctx, struct pipes_struct);
99 p->transport = transport;
100 p->ncalrpc_as_system = ncalrpc_as_system;
102 p->mem_ctx = talloc_named(p, 0, "pipe %s %p", pipe_name, p);
109 ok = init_pipe_handles(p, &id);
111 DEBUG(1, ("Failed to init handles\n"));
118 data_blob_free(&p->in_data.data);
119 data_blob_free(&p->in_data.pdu);
121 p->endian = RPC_LITTLE_ENDIAN;
123 /* Fake up an auth_user_info_dc for now, to make an info3, to make the session_info structure */
124 auth_user_info_dc = talloc_zero(p, struct auth_user_info_dc);
125 if (!auth_user_info_dc) {
131 auth_user_info_dc->num_sids = session_info->security_token->num_sids;
132 auth_user_info_dc->sids = session_info->security_token->sids;
133 auth_user_info_dc->info = session_info->info;
134 auth_user_info_dc->user_session_key = session_info->session_key;
136 /* This creates the input structure that make_server_info_info3 is looking for */
137 status = auth_convert_user_info_dc_saminfo3(p, auth_user_info_dc,
140 if (!NT_STATUS_IS_OK(status)) {
141 DEBUG(1, ("Failed to convert auth_user_info_dc into netr_SamInfo3\n"));
147 status = make_server_info_info3(p,
148 info3->base.account_name.string,
149 info3->base.domain.string,
150 &p->session_info, info3);
151 if (!NT_STATUS_IS_OK(status)) {
152 DEBUG(1, ("Failed to init server info\n"));
159 * Some internal functions need a local token to determine access to
162 status = create_local_token(p->session_info);
163 if (!NT_STATUS_IS_OK(status)) {
164 DEBUG(1, ("Failed to init local auth token\n"));
170 /* Now override the session_info->security_token with the exact
171 * security_token we were given from the other side,
172 * regardless of what we just calculated */
173 p->session_info->security_token = talloc_move(p->session_info, &session_info->security_token);
175 /* Also set the session key to the correct value */
176 p->session_info->user_session_key = session_info->session_key;
177 p->session_info->user_session_key.data = talloc_move(p->session_info, &session_info->session_key.data);
179 p->client_id = talloc_zero(p, struct client_address);
185 strlcpy(p->client_id->addr,
186 client_address, sizeof(p->client_id->addr));
187 p->client_id->name = talloc_strdup(p->client_id, client_address);
188 if (p->client_id->name == NULL) {
194 if (server_address != NULL) {
195 p->server_id = talloc_zero(p, struct client_address);
196 if (p->client_id == NULL) {
202 strlcpy(p->server_id->addr,
204 sizeof(p->server_id->addr));
206 p->server_id->name = talloc_strdup(p->server_id,
208 if (p->server_id->name == NULL) {
215 talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
221 /* Start listening on the appropriate unix socket and setup all is needed to
222 * dispatch requests to the pipes rpc implementation */
224 struct dcerpc_ncacn_listen_state {
225 struct ndr_syntax_id syntax_id;
233 struct tevent_context *ev_ctx;
234 struct messaging_context *msg_ctx;
235 dcerpc_ncacn_disconnect_fn disconnect_fn;
238 static void named_pipe_listener(struct tevent_context *ev,
239 struct tevent_fd *fde,
243 bool setup_named_pipe_socket(const char *pipe_name,
244 struct tevent_context *ev_ctx)
246 struct dcerpc_ncacn_listen_state *state;
247 struct tevent_fd *fde;
250 state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
252 DEBUG(0, ("Out of memory\n"));
255 state->ep.name = talloc_strdup(state, pipe_name);
256 if (state->ep.name == NULL) {
257 DEBUG(0, ("Out of memory\n"));
262 np_dir = talloc_asprintf(state, "%s/np", lp_ncalrpc_dir());
264 DEBUG(0, ("Out of memory\n"));
268 if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
269 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
270 np_dir, strerror(errno)));
274 state->fd = create_pipe_sock(np_dir, pipe_name, 0700);
275 if (state->fd == -1) {
276 DEBUG(0, ("Failed to create pipe socket! [%s/%s]\n",
281 DEBUG(10, ("Openened pipe socket fd %d for %s\n",
282 state->fd, pipe_name));
284 fde = tevent_add_fd(ev_ctx,
285 state, state->fd, TEVENT_FD_READ,
286 named_pipe_listener, state);
288 DEBUG(0, ("Failed to add event handler!\n"));
292 tevent_fd_set_auto_close(fde);
296 if (state->fd != -1) {
303 static void named_pipe_accept_function(const char *pipe_name, int fd);
305 static void named_pipe_listener(struct tevent_context *ev,
306 struct tevent_fd *fde,
310 struct dcerpc_ncacn_listen_state *state =
311 talloc_get_type_abort(private_data,
312 struct dcerpc_ncacn_listen_state);
313 struct sockaddr_un sunaddr;
317 /* TODO: should we have a limit to the number of clients ? */
319 len = sizeof(sunaddr);
321 sd = accept(state->fd,
322 (struct sockaddr *)(void *)&sunaddr, &len);
325 if (errno != EINTR) {
326 DEBUG(6, ("Failed to get a valid socket [%s]\n",
332 DEBUG(6, ("Accepted socket %d\n", sd));
334 named_pipe_accept_function(state->ep.name, sd);
338 /* This is the core of the rpc server.
339 * Accepts connections from clients and process requests using the appropriate
340 * dispatcher table. */
342 struct named_pipe_client {
343 const char *pipe_name;
344 struct ndr_syntax_id pipe_id;
346 struct tevent_context *ev;
347 struct messaging_context *msg_ctx;
350 uint16_t device_state;
351 uint64_t allocation_size;
353 struct tstream_context *tstream;
355 struct tsocket_address *client;
357 struct tsocket_address *server;
359 struct auth_session_info_transport *session_info;
361 struct pipes_struct *p;
363 struct tevent_queue *write_queue;
369 static void named_pipe_accept_done(struct tevent_req *subreq);
371 static void named_pipe_accept_function(const char *pipe_name, int fd)
373 struct ndr_syntax_id syntax;
374 struct named_pipe_client *npc;
375 struct tstream_context *plain;
376 struct tevent_req *subreq;
380 ok = is_known_pipename(pipe_name, &syntax);
382 DEBUG(1, ("Unknown pipe [%s]\n", pipe_name));
387 npc = talloc_zero(NULL, struct named_pipe_client);
389 DEBUG(0, ("Out of memory!\n"));
393 npc->pipe_name = pipe_name;
394 npc->pipe_id = syntax;
395 npc->ev = server_event_context();
396 npc->msg_ctx = server_messaging_context();
398 /* make sure socket is in NON blocking state */
399 ret = set_blocking(fd, false);
401 DEBUG(2, ("Failed to make socket non-blocking\n"));
407 ret = tstream_bsd_existing_socket(npc, fd, &plain);
409 DEBUG(2, ("Failed to create tstream socket\n"));
415 npc->file_type = FILE_TYPE_MESSAGE_MODE_PIPE;
416 npc->device_state = 0xff | 0x0400 | 0x0100;
417 npc->allocation_size = 4096;
419 subreq = tstream_npa_accept_existing_send(npc, npc->ev, plain,
422 npc->allocation_size);
424 DEBUG(2, ("Failed to start async accept procedure\n"));
429 tevent_req_set_callback(subreq, named_pipe_accept_done, npc);
432 static void named_pipe_packet_process(struct tevent_req *subreq);
433 static void named_pipe_packet_done(struct tevent_req *subreq);
435 static void named_pipe_accept_done(struct tevent_req *subreq)
437 struct named_pipe_client *npc =
438 tevent_req_callback_data(subreq, struct named_pipe_client);
439 const char *cli_addr;
443 ret = tstream_npa_accept_existing_recv(subreq, &error, npc,
452 DEBUG(2, ("Failed to accept named pipe connection! (%s)\n",
458 if (tsocket_address_is_inet(npc->client, "ip")) {
459 cli_addr = tsocket_address_inet_addr_string(npc->client,
461 if (cli_addr == NULL) {
469 ret = make_server_pipes_struct(npc,
470 npc->pipe_name, npc->pipe_id, NCACN_NP,
471 false, cli_addr, NULL, npc->session_info,
474 DEBUG(2, ("Failed to create pipes_struct! (%s)\n",
478 npc->p->msg_ctx = npc->msg_ctx;
480 npc->write_queue = tevent_queue_create(npc, "np_server_write_queue");
481 if (!npc->write_queue) {
482 DEBUG(2, ("Failed to set up write queue!\n"));
486 /* And now start receaving and processing packets */
487 subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
489 DEBUG(2, ("Failed to start receving packets\n"));
492 tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
496 DEBUG(2, ("Fatal error. Terminating client(%s) connection!\n",
498 /* terminate client connection */
503 static void named_pipe_packet_process(struct tevent_req *subreq)
505 struct named_pipe_client *npc =
506 tevent_req_callback_data(subreq, struct named_pipe_client);
507 struct _output_data *out = &npc->p->out_data;
508 DATA_BLOB recv_buffer = data_blob_null;
509 struct ncacn_packet *pkt;
517 status = dcerpc_read_ncacn_packet_recv(subreq, npc, &pkt, &recv_buffer);
519 if (!NT_STATUS_IS_OK(status)) {
523 data_left = recv_buffer.length;
524 data = (char *)recv_buffer.data;
528 data_used = process_incoming_data(npc->p, data, data_left);
530 DEBUG(3, ("Failed to process dceprc request!\n"));
531 status = NT_STATUS_UNEXPECTED_IO_ERROR;
535 data_left -= data_used;
539 /* Do not leak this buffer, npc is a long lived context */
540 talloc_free(recv_buffer.data);
543 /* this is needed because of the way DCERPC Binds work in
544 * the RPC marshalling code */
545 to_send = out->frag.length - out->current_pdu_sent;
548 DEBUG(10, ("Current_pdu_len = %u, "
549 "current_pdu_sent = %u "
550 "Returning %u bytes\n",
551 (unsigned int)out->frag.length,
552 (unsigned int)out->current_pdu_sent,
553 (unsigned int)to_send));
555 npc->iov = talloc_zero(npc, struct iovec);
557 status = NT_STATUS_NO_MEMORY;
562 npc->iov[0].iov_base = out->frag.data
563 + out->current_pdu_sent;
564 npc->iov[0].iov_len = to_send;
566 out->current_pdu_sent += to_send;
569 /* this condition is false for bind packets, or when we haven't
570 * yet got a full request, and need to wait for more data from
572 while (out->data_sent_length < out->rdata.length) {
574 ok = create_next_pdu(npc->p);
576 DEBUG(3, ("Failed to create next PDU!\n"));
577 status = NT_STATUS_UNEXPECTED_IO_ERROR;
581 npc->iov = talloc_realloc(npc, npc->iov,
582 struct iovec, npc->count + 1);
584 status = NT_STATUS_NO_MEMORY;
588 npc->iov[npc->count].iov_base = out->frag.data;
589 npc->iov[npc->count].iov_len = out->frag.length;
591 DEBUG(10, ("PDU number: %d, PDU Length: %u\n",
592 (unsigned int)npc->count,
593 (unsigned int)npc->iov[npc->count].iov_len));
594 dump_data(11, (const uint8_t *)npc->iov[npc->count].iov_base,
595 npc->iov[npc->count].iov_len);
599 /* we still don't have a complete request, go back and wait for more
601 if (npc->count == 0) {
602 /* Wait for the next packet */
603 subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
605 DEBUG(2, ("Failed to start receving packets\n"));
606 status = NT_STATUS_NO_MEMORY;
609 tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
613 DEBUG(10, ("Sending a total of %u bytes\n",
614 (unsigned int)npc->p->out_data.data_sent_length));
616 subreq = tstream_writev_queue_send(npc, npc->ev,
619 npc->iov, npc->count);
621 DEBUG(2, ("Failed to send packet\n"));
622 status = NT_STATUS_NO_MEMORY;
625 tevent_req_set_callback(subreq, named_pipe_packet_done, npc);
629 DEBUG(2, ("Fatal error(%s). "
630 "Terminating client(%s) connection!\n",
631 nt_errstr(status), npc->client_name));
632 /* terminate client connection */
637 static void named_pipe_packet_done(struct tevent_req *subreq)
639 struct named_pipe_client *npc =
640 tevent_req_callback_data(subreq, struct named_pipe_client);
644 ret = tstream_writev_queue_recv(subreq, &sys_errno);
647 DEBUG(2, ("Writev failed!\n"));
651 /* clear out any data that may have been left around */
653 TALLOC_FREE(npc->iov);
654 data_blob_free(&npc->p->in_data.data);
655 data_blob_free(&npc->p->out_data.frag);
656 data_blob_free(&npc->p->out_data.rdata);
658 /* Wait for the next packet */
659 subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
661 DEBUG(2, ("Failed to start receving packets\n"));
665 tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
669 DEBUG(2, ("Fatal error(%s). "
670 "Terminating client(%s) connection!\n",
671 strerror(sys_errno), npc->client_name));
672 /* terminate client connection */
677 static void dcerpc_ncacn_accept(struct tevent_context *ev_ctx,
678 struct messaging_context *msg_ctx,
679 struct ndr_syntax_id syntax_id,
680 enum dcerpc_transport_t transport,
683 struct tsocket_address *cli_addr,
684 struct tsocket_address *srv_addr,
686 dcerpc_ncacn_disconnect_fn fn);
688 /********************************************************************
689 * Start listening on the tcp/ip socket
690 ********************************************************************/
692 static void dcerpc_ncacn_tcpip_listener(struct tevent_context *ev,
693 struct tevent_fd *fde,
697 uint16_t setup_dcerpc_ncacn_tcpip_socket(struct tevent_context *ev_ctx,
698 struct messaging_context *msg_ctx,
699 struct ndr_syntax_id syntax_id,
700 const struct sockaddr_storage *ifss,
703 struct dcerpc_ncacn_listen_state *state;
704 struct tevent_fd *fde;
707 state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
709 DEBUG(0, ("setup_dcerpc_ncacn_tcpip_socket: Out of memory\n"));
713 state->syntax_id = syntax_id;
715 state->ep.port = port;
716 state->disconnect_fn = NULL;
718 if (state->ep.port == 0) {
721 for (i = SERVER_TCP_LOW_PORT; i <= SERVER_TCP_HIGH_PORT; i++) {
722 state->fd = open_socket_in(SOCK_STREAM,
733 state->fd = open_socket_in(SOCK_STREAM,
739 if (state->fd == -1) {
740 DEBUG(0, ("setup_dcerpc_ncacn_tcpip_socket: Failed to create "
741 "socket on port %u!\n", state->ep.port));
745 state->ev_ctx = ev_ctx;
746 state->msg_ctx = msg_ctx;
748 /* ready to listen */
749 set_socket_options(state->fd, "SO_KEEPALIVE");
750 set_socket_options(state->fd, lp_socket_options());
752 /* Set server socket to non-blocking for the accept. */
753 set_blocking(state->fd, false);
755 rc = listen(state->fd, SMBD_LISTEN_BACKLOG);
757 DEBUG(0,("setup_tcpip_socket: listen - %s\n", strerror(errno)));
761 DEBUG(10, ("setup_tcpip_socket: openened socket fd %d for port %u\n",
762 state->fd, state->ep.port));
764 fde = tevent_add_fd(state->ev_ctx,
768 dcerpc_ncacn_tcpip_listener,
771 DEBUG(0, ("setup_tcpip_socket: Failed to add event handler!\n"));
775 tevent_fd_set_auto_close(fde);
777 return state->ep.port;
779 if (state->fd != -1) {
787 static void dcerpc_ncacn_tcpip_listener(struct tevent_context *ev,
788 struct tevent_fd *fde,
792 struct dcerpc_ncacn_listen_state *state =
793 talloc_get_type_abort(private_data,
794 struct dcerpc_ncacn_listen_state);
795 struct tsocket_address *cli_addr = NULL;
796 struct tsocket_address *srv_addr = NULL;
797 struct sockaddr_storage addr;
798 socklen_t in_addrlen = sizeof(addr);
802 s = accept(state->fd, (struct sockaddr *)(void *) &addr, &in_addrlen);
804 if (errno != EINTR) {
805 DEBUG(0,("tcpip_listener accept: %s\n",
811 rc = tsocket_address_bsd_from_sockaddr(state,
812 (struct sockaddr *)(void *) &addr,
820 rc = getsockname(s, (struct sockaddr *)(void *) &addr, &in_addrlen);
826 rc = tsocket_address_bsd_from_sockaddr(state,
827 (struct sockaddr *)(void *) &addr,
835 DEBUG(6, ("tcpip_listener: Accepted socket %d\n", s));
837 dcerpc_ncacn_accept(state->ev_ctx,
849 /********************************************************************
850 * Start listening on the ncalrpc socket
851 ********************************************************************/
853 static void dcerpc_ncalrpc_listener(struct tevent_context *ev,
854 struct tevent_fd *fde,
858 bool setup_dcerpc_ncalrpc_socket(struct tevent_context *ev_ctx,
859 struct messaging_context *msg_ctx,
860 struct ndr_syntax_id syntax_id,
862 dcerpc_ncacn_disconnect_fn fn)
864 struct dcerpc_ncacn_listen_state *state;
865 struct tevent_fd *fde;
867 state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
869 DEBUG(0, ("Out of memory\n"));
873 state->syntax_id = syntax_id;
875 state->disconnect_fn = fn;
880 state->ep.name = talloc_strdup(state, name);
882 if (state->ep.name == NULL) {
883 DEBUG(0, ("Out of memory\n"));
888 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0700)) {
889 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
890 lp_ncalrpc_dir(), strerror(errno)));
894 state->fd = create_pipe_sock(lp_ncalrpc_dir(), name, 0700);
895 if (state->fd == -1) {
896 DEBUG(0, ("Failed to create pipe socket! [%s/%s]\n",
897 lp_ncalrpc_dir(), name));
901 DEBUG(10, ("Openened pipe socket fd %d for %s\n", state->fd, name));
903 state->ev_ctx = ev_ctx;
904 state->msg_ctx = msg_ctx;
906 /* Set server socket to non-blocking for the accept. */
907 set_blocking(state->fd, false);
909 fde = tevent_add_fd(state->ev_ctx,
913 dcerpc_ncalrpc_listener,
916 DEBUG(0, ("Failed to add event handler for ncalrpc!\n"));
920 tevent_fd_set_auto_close(fde);
924 if (state->fd != -1) {
932 static void dcerpc_ncalrpc_listener(struct tevent_context *ev,
933 struct tevent_fd *fde,
937 struct dcerpc_ncacn_listen_state *state =
938 talloc_get_type_abort(private_data,
939 struct dcerpc_ncacn_listen_state);
940 struct tsocket_address *cli_addr = NULL;
941 struct sockaddr_un sunaddr;
942 struct sockaddr *addr = (struct sockaddr *)(void *)&sunaddr;
943 socklen_t len = sizeof(sunaddr);
947 ZERO_STRUCT(sunaddr);
949 sd = accept(state->fd, addr, &len);
951 if (errno != EINTR) {
952 DEBUG(0, ("ncalrpc accept() failed: %s\n", strerror(errno)));
957 rc = tsocket_address_bsd_from_sockaddr(state,
965 DEBUG(10, ("Accepted ncalrpc socket %d\n", sd));
967 dcerpc_ncacn_accept(state->ev_ctx,
969 state->syntax_id, NCALRPC,
972 state->disconnect_fn);
975 struct dcerpc_ncacn_conn {
976 struct ndr_syntax_id syntax_id;
978 enum dcerpc_transport_t transport;
987 struct pipes_struct *p;
988 dcerpc_ncacn_disconnect_fn disconnect_fn;
990 struct tevent_context *ev_ctx;
991 struct messaging_context *msg_ctx;
993 struct tstream_context *tstream;
994 struct tevent_queue *send_queue;
996 struct tsocket_address *client;
998 struct tsocket_address *server;
1000 struct auth_session_info_transport *session_info;
1006 static void dcerpc_ncacn_packet_process(struct tevent_req *subreq);
1007 static void dcerpc_ncacn_packet_done(struct tevent_req *subreq);
1009 static void dcerpc_ncacn_accept(struct tevent_context *ev_ctx,
1010 struct messaging_context *msg_ctx,
1011 struct ndr_syntax_id syntax_id,
1012 enum dcerpc_transport_t transport,
1015 struct tsocket_address *cli_addr,
1016 struct tsocket_address *srv_addr,
1018 dcerpc_ncacn_disconnect_fn fn) {
1019 struct dcerpc_ncacn_conn *ncacn_conn;
1020 struct tevent_req *subreq;
1021 const char *cli_str;
1022 const char *srv_str = NULL;
1023 bool system_user = false;
1030 DEBUG(10, ("dcerpc_ncacn_accept\n"));
1032 ncacn_conn = talloc_zero(ev_ctx, struct dcerpc_ncacn_conn);
1033 if (ncacn_conn == NULL) {
1034 DEBUG(0, ("Out of memory!\n"));
1039 ncacn_conn->transport = transport;
1040 ncacn_conn->syntax_id = syntax_id;
1041 ncacn_conn->ev_ctx = ev_ctx;
1042 ncacn_conn->msg_ctx = msg_ctx;
1043 ncacn_conn->sock = s;
1044 ncacn_conn->disconnect_fn = fn;
1046 ncacn_conn->client = talloc_move(ncacn_conn, &cli_addr);
1047 if (tsocket_address_is_inet(ncacn_conn->client, "ip")) {
1048 ncacn_conn->client_name =
1049 tsocket_address_inet_addr_string(ncacn_conn->client,
1052 ncacn_conn->client_name =
1053 tsocket_address_unix_path(ncacn_conn->client,
1056 if (ncacn_conn->client_name == NULL) {
1057 DEBUG(0, ("Out of memory!\n"));
1058 talloc_free(ncacn_conn);
1063 if (srv_addr != NULL) {
1064 ncacn_conn->server = talloc_move(ncacn_conn, &srv_addr);
1066 ncacn_conn->server_name =
1067 tsocket_address_inet_addr_string(ncacn_conn->server,
1069 if (ncacn_conn->server_name == NULL) {
1070 DEBUG(0, ("Out of memory!\n"));
1071 talloc_free(ncacn_conn);
1077 switch (transport) {
1079 ncacn_conn->ep.port = port;
1081 pipe_name = tsocket_address_string(ncacn_conn->client,
1083 if (pipe_name == NULL) {
1085 talloc_free(ncacn_conn);
1091 rc = sys_getpeereid(s, &uid);
1093 DEBUG(2, ("Failed to get ncalrpc connecting uid!"));
1095 if (uid == sec_initial_uid()) {
1100 ncacn_conn->ep.name = talloc_strdup(ncacn_conn, name);
1101 if (ncacn_conn->ep.name == NULL) {
1103 talloc_free(ncacn_conn);
1107 pipe_name = talloc_strdup(ncacn_conn,
1109 if (pipe_name == NULL) {
1111 talloc_free(ncacn_conn);
1116 DEBUG(0, ("unknown dcerpc transport: %u!\n",
1118 talloc_free(ncacn_conn);
1123 rc = set_blocking(s, false);
1125 DEBUG(2, ("Failed to set dcerpc socket to non-blocking\n"));
1126 talloc_free(ncacn_conn);
1132 * As soon as we have tstream_bsd_existing_socket set up it will
1133 * take care of closing the socket.
1135 rc = tstream_bsd_existing_socket(ncacn_conn, s, &ncacn_conn->tstream);
1137 DEBUG(2, ("Failed to create tstream socket for dcerpc\n"));
1138 talloc_free(ncacn_conn);
1143 if (tsocket_address_is_inet(ncacn_conn->client, "ip")) {
1144 cli_str = ncacn_conn->client_name;
1149 if (ncacn_conn->server != NULL) {
1150 if (tsocket_address_is_inet(ncacn_conn->server, "ip")) {
1151 srv_str = ncacn_conn->server_name;
1157 if (ncacn_conn->session_info == NULL) {
1158 status = auth_anonymous_session_info(ncacn_conn,
1159 &ncacn_conn->session_info);
1160 if (!NT_STATUS_IS_OK(status)) {
1161 DEBUG(2, ("Failed to create "
1162 "auth_anonymous_session_info - %s\n",
1163 nt_errstr(status)));
1164 talloc_free(ncacn_conn);
1169 rc = make_server_pipes_struct(ncacn_conn,
1171 ncacn_conn->syntax_id,
1172 ncacn_conn->transport,
1176 ncacn_conn->session_info,
1180 DEBUG(2, ("Failed to create pipe struct - %s",
1181 strerror(sys_errno)));
1182 talloc_free(ncacn_conn);
1186 ncacn_conn->send_queue = tevent_queue_create(ncacn_conn,
1187 "dcerpc send queue");
1188 if (ncacn_conn->send_queue == NULL) {
1189 DEBUG(0, ("Out of memory!\n"));
1190 talloc_free(ncacn_conn);
1194 subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1196 ncacn_conn->tstream);
1197 if (subreq == NULL) {
1198 DEBUG(2, ("Failed to send ncacn packet\n"));
1199 talloc_free(ncacn_conn);
1203 tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1205 DEBUG(10, ("dcerpc_ncacn_accept done\n"));
1210 static void dcerpc_ncacn_packet_process(struct tevent_req *subreq)
1212 struct dcerpc_ncacn_conn *ncacn_conn =
1213 tevent_req_callback_data(subreq, struct dcerpc_ncacn_conn);
1215 struct _output_data *out = &ncacn_conn->p->out_data;
1216 DATA_BLOB recv_buffer = data_blob_null;
1217 struct ncacn_packet *pkt;
1225 status = dcerpc_read_ncacn_packet_recv(subreq, ncacn_conn, &pkt, &recv_buffer);
1226 TALLOC_FREE(subreq);
1227 if (!NT_STATUS_IS_OK(status)) {
1228 if (ncacn_conn->disconnect_fn != NULL) {
1229 ok = ncacn_conn->disconnect_fn(ncacn_conn->p);
1231 DEBUG(3, ("Failed to call disconnect function\n"));
1237 data_left = recv_buffer.length;
1238 data = (char *) recv_buffer.data;
1241 data_used = process_incoming_data(ncacn_conn->p, data, data_left);
1242 if (data_used < 0) {
1243 DEBUG(3, ("Failed to process dcerpc request!\n"));
1244 status = NT_STATUS_UNEXPECTED_IO_ERROR;
1248 data_left -= data_used;
1252 /* Do not leak this buffer */
1253 talloc_free(recv_buffer.data);
1257 * This is needed because of the way DCERPC binds work in the RPC
1260 to_send = out->frag.length - out->current_pdu_sent;
1263 DEBUG(10, ("Current_pdu_len = %u, "
1264 "current_pdu_sent = %u "
1265 "Returning %u bytes\n",
1266 (unsigned int)out->frag.length,
1267 (unsigned int)out->current_pdu_sent,
1268 (unsigned int)to_send));
1270 ncacn_conn->iov = talloc_zero(ncacn_conn, struct iovec);
1271 if (ncacn_conn->iov == NULL) {
1272 status = NT_STATUS_NO_MEMORY;
1273 DEBUG(3, ("Out of memory!\n"));
1276 ncacn_conn->count = 1;
1278 ncacn_conn->iov[0].iov_base = out->frag.data
1279 + out->current_pdu_sent;
1280 ncacn_conn->iov[0].iov_len = to_send;
1282 out->current_pdu_sent += to_send;
1286 * This condition is false for bind packets, or when we haven't yet got
1287 * a full request, and need to wait for more data from the client
1289 while (out->data_sent_length < out->rdata.length) {
1290 ok = create_next_pdu(ncacn_conn->p);
1292 DEBUG(3, ("Failed to create next PDU!\n"));
1293 status = NT_STATUS_UNEXPECTED_IO_ERROR;
1297 ncacn_conn->iov = talloc_realloc(ncacn_conn,
1300 ncacn_conn->count + 1);
1301 if (ncacn_conn->iov == NULL) {
1302 DEBUG(3, ("Out of memory!\n"));
1303 status = NT_STATUS_NO_MEMORY;
1307 ncacn_conn->iov[ncacn_conn->count].iov_base = out->frag.data;
1308 ncacn_conn->iov[ncacn_conn->count].iov_len = out->frag.length;
1310 DEBUG(10, ("PDU number: %d, PDU Length: %u\n",
1311 (unsigned int) ncacn_conn->count,
1312 (unsigned int) ncacn_conn->iov[ncacn_conn->count].iov_len));
1313 dump_data(11, (const uint8_t *) ncacn_conn->iov[ncacn_conn->count].iov_base,
1314 ncacn_conn->iov[ncacn_conn->count].iov_len);
1315 ncacn_conn->count++;
1319 * We still don't have a complete request, go back and wait for more
1322 if (ncacn_conn->count == 0) {
1323 /* Wait for the next packet */
1324 subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1326 ncacn_conn->tstream);
1327 if (subreq == NULL) {
1328 DEBUG(2, ("Failed to start receving packets\n"));
1329 status = NT_STATUS_NO_MEMORY;
1332 tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1336 DEBUG(10, ("Sending a total of %u bytes\n",
1337 (unsigned int)ncacn_conn->p->out_data.data_sent_length));
1339 subreq = tstream_writev_queue_send(ncacn_conn,
1341 ncacn_conn->tstream,
1342 ncacn_conn->send_queue,
1345 if (subreq == NULL) {
1346 DEBUG(2, ("Failed to send packet\n"));
1347 status = NT_STATUS_NO_MEMORY;
1351 tevent_req_set_callback(subreq, dcerpc_ncacn_packet_done, ncacn_conn);
1355 DEBUG(3, ("Terminating client(%s) connection! - '%s'\n",
1356 ncacn_conn->client_name, nt_errstr(status)));
1358 /* Terminate client connection */
1359 talloc_free(ncacn_conn);
1363 static void dcerpc_ncacn_packet_done(struct tevent_req *subreq)
1365 struct dcerpc_ncacn_conn *ncacn_conn =
1366 tevent_req_callback_data(subreq, struct dcerpc_ncacn_conn);
1367 NTSTATUS status = NT_STATUS_OK;
1371 rc = tstream_writev_queue_recv(subreq, &sys_errno);
1372 TALLOC_FREE(subreq);
1374 DEBUG(2, ("Writev failed!\n"));
1375 status = map_nt_error_from_unix(sys_errno);
1379 /* clear out any data that may have been left around */
1380 ncacn_conn->count = 0;
1381 TALLOC_FREE(ncacn_conn->iov);
1382 data_blob_free(&ncacn_conn->p->in_data.data);
1383 data_blob_free(&ncacn_conn->p->out_data.frag);
1384 data_blob_free(&ncacn_conn->p->out_data.rdata);
1386 /* Wait for the next packet */
1387 subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1389 ncacn_conn->tstream);
1390 if (subreq == NULL) {
1391 DEBUG(2, ("Failed to start receving packets\n"));
1392 status = NT_STATUS_NO_MEMORY;
1396 tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1400 DEBUG(3, ("Terminating client(%s) connection! - '%s'\n",
1401 ncacn_conn->client_name, nt_errstr(status)));
1403 /* Terminate client connection */
1404 talloc_free(ncacn_conn);
1408 /* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */