2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1998,
5 * Largely re-written : 2005
6 * Copyright (C) Jeremy Allison 1998 - 2005
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 "librpc/gen_ndr/ndr_named_pipe_auth.h"
26 #define DBGC_CLASS DBGC_RPC_SRV
28 static int pipes_open;
30 static pipes_struct *InternalPipes;
33 * the following prototypes are declared here to avoid
34 * code being moved about too much for a patch to be
35 * disrupted / less obvious.
37 * these functions, and associated functions that they
38 * call, should be moved behind a .so module-loading
39 * system _anyway_. so that's the next step...
42 static int close_internal_rpc_pipe_hnd(struct pipes_struct *p);
44 /****************************************************************************
45 Internal Pipe iterator functions.
46 ****************************************************************************/
48 pipes_struct *get_first_internal_pipe(void)
53 pipes_struct *get_next_internal_pipe(pipes_struct *p)
58 /****************************************************************************
59 Initialise an outgoing packet.
60 ****************************************************************************/
62 static bool pipe_init_outgoing_data(pipes_struct *p)
64 output_data *o_data = &p->out_data;
66 /* Reset the offset counters. */
67 o_data->data_sent_length = 0;
68 o_data->current_pdu_sent = 0;
70 prs_mem_free(&o_data->frag);
72 /* Free any memory in the current return data buffer. */
73 prs_mem_free(&o_data->rdata);
76 * Initialize the outgoing RPC data buffer.
77 * we will use this as the raw data area for replying to rpc requests.
79 if(!prs_init(&o_data->rdata, 128, p->mem_ctx, MARSHALL)) {
80 DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
87 /****************************************************************************
88 Make an internal namedpipes structure
89 ****************************************************************************/
91 static struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
92 const struct ndr_syntax_id *syntax,
93 const char *client_address,
94 struct auth_serversupplied_info *server_info)
98 DEBUG(4,("Create pipe requested %s\n",
99 get_pipe_name_from_iface(syntax)));
101 p = TALLOC_ZERO_P(mem_ctx, struct pipes_struct);
104 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
108 if ((p->mem_ctx = talloc_init("pipe %s %p",
109 get_pipe_name_from_iface(syntax),
111 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
116 if (!init_pipe_handle_list(p, syntax)) {
117 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
118 talloc_destroy(p->mem_ctx);
124 * Initialize the incoming RPC data buffer with one PDU worth of memory.
125 * We cheat here and say we're marshalling, as we intend to add incoming
126 * data directly into the prs_struct and we want it to auto grow. We will
127 * change the type to UNMARSALLING before processing the stream.
130 if(!prs_init(&p->in_data.data, 128, p->mem_ctx, MARSHALL)) {
131 DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
132 talloc_destroy(p->mem_ctx);
133 close_policy_by_pipe(p);
138 p->server_info = copy_serverinfo(p, server_info);
139 if (p->server_info == NULL) {
140 DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
141 talloc_destroy(p->mem_ctx);
142 close_policy_by_pipe(p);
147 DLIST_ADD(InternalPipes, p);
149 memcpy(p->client_address, client_address, sizeof(p->client_address));
151 p->endian = RPC_LITTLE_ENDIAN;
154 * Initialize the outgoing RPC data buffer with no memory.
156 prs_init_empty(&p->out_data.rdata, p->mem_ctx, MARSHALL);
160 DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
161 get_pipe_name_from_iface(syntax), pipes_open));
163 talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
168 /****************************************************************************
169 Sets the fault state on incoming packets.
170 ****************************************************************************/
172 static void set_incoming_fault(pipes_struct *p)
174 prs_mem_free(&p->in_data.data);
175 p->in_data.pdu_needed_len = 0;
176 p->in_data.pdu_received_len = 0;
177 p->fault_state = True;
178 DEBUG(10, ("set_incoming_fault: Setting fault state on pipe %s\n",
179 get_pipe_name_from_iface(&p->syntax)));
182 /****************************************************************************
183 Ensures we have at least RPC_HEADER_LEN amount of data in the incoming buffer.
184 ****************************************************************************/
186 static ssize_t fill_rpc_header(pipes_struct *p, char *data, size_t data_to_copy)
188 size_t len_needed_to_complete_hdr = MIN(data_to_copy, RPC_HEADER_LEN - p->in_data.pdu_received_len);
190 DEBUG(10,("fill_rpc_header: data_to_copy = %u, len_needed_to_complete_hdr = %u, receive_len = %u\n",
191 (unsigned int)data_to_copy, (unsigned int)len_needed_to_complete_hdr,
192 (unsigned int)p->in_data.pdu_received_len ));
194 if (p->in_data.current_in_pdu == NULL) {
195 p->in_data.current_in_pdu = talloc_array(p, uint8_t,
198 if (p->in_data.current_in_pdu == NULL) {
199 DEBUG(0, ("talloc failed\n"));
203 memcpy((char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, len_needed_to_complete_hdr);
204 p->in_data.pdu_received_len += len_needed_to_complete_hdr;
206 return (ssize_t)len_needed_to_complete_hdr;
209 /****************************************************************************
210 Unmarshalls a new PDU header. Assumes the raw header data is in current_in_pdu.
211 ****************************************************************************/
213 static ssize_t unmarshall_rpc_header(pipes_struct *p)
216 * Unmarshall the header to determine the needed length.
221 if(p->in_data.pdu_received_len != RPC_HEADER_LEN) {
222 DEBUG(0,("unmarshall_rpc_header: assert on rpc header length failed.\n"));
223 set_incoming_fault(p);
227 prs_init_empty( &rpc_in, p->mem_ctx, UNMARSHALL);
228 prs_set_endian_data( &rpc_in, p->endian);
230 prs_give_memory( &rpc_in, (char *)&p->in_data.current_in_pdu[0],
231 p->in_data.pdu_received_len, False);
234 * Unmarshall the header as this will tell us how much
235 * data we need to read to get the complete pdu.
236 * This also sets the endian flag in rpc_in.
239 if(!smb_io_rpc_hdr("", &p->hdr, &rpc_in, 0)) {
240 DEBUG(0,("unmarshall_rpc_header: failed to unmarshall RPC_HDR.\n"));
241 set_incoming_fault(p);
242 prs_mem_free(&rpc_in);
247 * Validate the RPC header.
250 if(p->hdr.major != 5 && p->hdr.minor != 0) {
251 DEBUG(0,("unmarshall_rpc_header: invalid major/minor numbers in RPC_HDR.\n"));
252 set_incoming_fault(p);
253 prs_mem_free(&rpc_in);
258 * If there's not data in the incoming buffer this should be the start of a new RPC.
261 if(prs_offset(&p->in_data.data) == 0) {
264 * AS/U doesn't set FIRST flag in a BIND packet it seems.
267 if ((p->hdr.pkt_type == RPC_REQUEST) && !(p->hdr.flags & RPC_FLG_FIRST)) {
269 * Ensure that the FIRST flag is set. If not then we have
270 * a stream missmatch.
273 DEBUG(0,("unmarshall_rpc_header: FIRST flag not set in first PDU !\n"));
274 set_incoming_fault(p);
275 prs_mem_free(&rpc_in);
280 * If this is the first PDU then set the endianness
281 * flag in the pipe. We will need this when parsing all
285 p->endian = rpc_in.bigendian_data;
287 DEBUG(5,("unmarshall_rpc_header: using %sendian RPC\n",
288 p->endian == RPC_LITTLE_ENDIAN ? "little-" : "big-" ));
293 * If this is *NOT* the first PDU then check the endianness
294 * flag in the pipe is the same as that in the PDU.
297 if (p->endian != rpc_in.bigendian_data) {
298 DEBUG(0,("unmarshall_rpc_header: FIRST endianness flag (%d) different in next PDU !\n", (int)p->endian));
299 set_incoming_fault(p);
300 prs_mem_free(&rpc_in);
306 * Ensure that the pdu length is sane.
309 if((p->hdr.frag_len < RPC_HEADER_LEN) || (p->hdr.frag_len > RPC_MAX_PDU_FRAG_LEN)) {
310 DEBUG(0,("unmarshall_rpc_header: assert on frag length failed.\n"));
311 set_incoming_fault(p);
312 prs_mem_free(&rpc_in);
316 DEBUG(10,("unmarshall_rpc_header: type = %u, flags = %u\n", (unsigned int)p->hdr.pkt_type,
317 (unsigned int)p->hdr.flags ));
319 p->in_data.pdu_needed_len = (uint32)p->hdr.frag_len - RPC_HEADER_LEN;
321 prs_mem_free(&rpc_in);
323 p->in_data.current_in_pdu = TALLOC_REALLOC_ARRAY(
324 p, p->in_data.current_in_pdu, uint8_t, p->hdr.frag_len);
325 if (p->in_data.current_in_pdu == NULL) {
326 DEBUG(0, ("talloc failed\n"));
327 set_incoming_fault(p);
331 return 0; /* No extra data processed. */
334 /****************************************************************************
335 Call this to free any talloc'ed memory. Do this before and after processing
337 ****************************************************************************/
339 static void free_pipe_context(pipes_struct *p)
342 DEBUG(3,("free_pipe_context: destroying talloc pool of size "
343 "%lu\n", (unsigned long)talloc_total_size(p->mem_ctx) ));
344 talloc_free_children(p->mem_ctx);
346 p->mem_ctx = talloc_init(
347 "pipe %s %p", get_pipe_name_from_iface(&p->syntax), p);
348 if (p->mem_ctx == NULL) {
349 p->fault_state = True;
354 /****************************************************************************
355 Processes a request pdu. This will do auth processing if needed, and
356 appends the data into the complete stream if the LAST flag is not set.
357 ****************************************************************************/
359 static bool process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p)
361 uint32 ss_padding_len = 0;
362 size_t data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
363 (p->hdr.auth_len ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len;
366 DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
367 set_incoming_fault(p);
372 * Check if we need to do authentication processing.
373 * This is only done on requests, not binds.
377 * Read the RPC request header.
380 if(!smb_io_rpc_hdr_req("req", &p->hdr_req, rpc_in_p, 0)) {
381 DEBUG(0,("process_request_pdu: failed to unmarshall RPC_HDR_REQ.\n"));
382 set_incoming_fault(p);
386 switch(p->auth.auth_type) {
387 case PIPE_AUTH_TYPE_NONE:
390 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
391 case PIPE_AUTH_TYPE_NTLMSSP:
394 if(!api_pipe_ntlmssp_auth_process(p, rpc_in_p, &ss_padding_len, &status)) {
395 DEBUG(0,("process_request_pdu: failed to do auth processing.\n"));
396 DEBUG(0,("process_request_pdu: error was %s.\n", nt_errstr(status) ));
397 set_incoming_fault(p);
403 case PIPE_AUTH_TYPE_SCHANNEL:
404 if (!api_pipe_schannel_process(p, rpc_in_p, &ss_padding_len)) {
405 DEBUG(3,("process_request_pdu: failed to do schannel processing.\n"));
406 set_incoming_fault(p);
412 DEBUG(0,("process_request_pdu: unknown auth type %u set.\n", (unsigned int)p->auth.auth_type ));
413 set_incoming_fault(p);
417 /* Now we've done the sign/seal we can remove any padding data. */
418 if (data_len > ss_padding_len) {
419 data_len -= ss_padding_len;
423 * Check the data length doesn't go over the 15Mb limit.
424 * increased after observing a bug in the Windows NT 4.0 SP6a
425 * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC
426 * will not fit in the initial buffer of size 0x1068 --jerry 22/01/2002
429 if(prs_offset(&p->in_data.data) + data_len > 15*1024*1024) {
430 DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
431 (unsigned int)prs_data_size(&p->in_data.data), (unsigned int)data_len ));
432 set_incoming_fault(p);
437 * Append the data portion into the buffer and return.
440 if(!prs_append_some_prs_data(&p->in_data.data, rpc_in_p, prs_offset(rpc_in_p), data_len)) {
441 DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
442 (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) ));
443 set_incoming_fault(p);
447 if(p->hdr.flags & RPC_FLG_LAST) {
450 * Ok - we finally have a complete RPC stream.
451 * Call the rpc command to process it.
455 * Ensure the internal prs buffer size is *exactly* the same
456 * size as the current offset.
459 if(!prs_set_buffer_size(&p->in_data.data, prs_offset(&p->in_data.data))) {
460 DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n"));
461 set_incoming_fault(p);
466 * Set the parse offset to the start of the data and set the
467 * prs_struct to UNMARSHALL.
470 prs_set_offset(&p->in_data.data, 0);
471 prs_switch_type(&p->in_data.data, UNMARSHALL);
474 * Process the complete data stream here.
477 free_pipe_context(p);
479 if(pipe_init_outgoing_data(p)) {
480 ret = api_pipe_request(p);
483 free_pipe_context(p);
486 * We have consumed the whole data stream. Set back to
487 * marshalling and set the offset back to the start of
488 * the buffer to re-use it (we could also do a prs_mem_free()
489 * and then re_init on the next start of PDU. Not sure which
490 * is best here.... JRA.
493 prs_switch_type(&p->in_data.data, MARSHALL);
494 prs_set_offset(&p->in_data.data, 0);
501 /****************************************************************************
502 Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
503 already been parsed and stored in p->hdr.
504 ****************************************************************************/
506 static void process_complete_pdu(pipes_struct *p)
509 size_t data_len = p->in_data.pdu_received_len - RPC_HEADER_LEN;
510 char *data_p = (char *)&p->in_data.current_in_pdu[RPC_HEADER_LEN];
514 DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
515 get_pipe_name_from_iface(&p->syntax)));
516 set_incoming_fault(p);
517 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
521 prs_init_empty( &rpc_in, p->mem_ctx, UNMARSHALL);
524 * Ensure we're using the corrent endianness for both the
525 * RPC header flags and the raw data we will be reading from.
528 prs_set_endian_data( &rpc_in, p->endian);
529 prs_set_endian_data( &p->in_data.data, p->endian);
531 prs_give_memory( &rpc_in, data_p, (uint32)data_len, False);
533 DEBUG(10,("process_complete_pdu: processing packet type %u\n",
534 (unsigned int)p->hdr.pkt_type ));
536 switch (p->hdr.pkt_type) {
538 reply = process_request_pdu(p, &rpc_in);
541 case RPC_PING: /* CL request - ignore... */
542 DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
543 (unsigned int)p->hdr.pkt_type,
544 get_pipe_name_from_iface(&p->syntax)));
547 case RPC_RESPONSE: /* No responses here. */
548 DEBUG(0,("process_complete_pdu: Error. RPC_RESPONSE received from client on pipe %s.\n",
549 get_pipe_name_from_iface(&p->syntax)));
553 case RPC_WORKING: /* CL request - reply to a ping when a call in process. */
554 case RPC_NOCALL: /* CL - server reply to a ping call. */
560 DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
561 (unsigned int)p->hdr.pkt_type,
562 get_pipe_name_from_iface(&p->syntax)));
567 * We assume that a pipe bind is only in one pdu.
569 if(pipe_init_outgoing_data(p)) {
570 reply = api_pipe_bind_req(p, &rpc_in);
576 DEBUG(0,("process_complete_pdu: Error. RPC_BINDACK/RPC_BINDNACK packet type %u received on pipe %s.\n",
577 (unsigned int)p->hdr.pkt_type,
578 get_pipe_name_from_iface(&p->syntax)));
584 * We assume that a pipe bind is only in one pdu.
586 if(pipe_init_outgoing_data(p)) {
587 reply = api_pipe_alter_context(p, &rpc_in);
591 case RPC_ALTCONTRESP:
592 DEBUG(0,("process_complete_pdu: Error. RPC_ALTCONTRESP on pipe %s: Should only be server -> client.\n",
593 get_pipe_name_from_iface(&p->syntax)));
598 * The third packet in an NTLMSSP auth exchange.
600 if(pipe_init_outgoing_data(p)) {
601 reply = api_pipe_bind_auth3(p, &rpc_in);
606 DEBUG(0,("process_complete_pdu: Error. RPC_SHUTDOWN on pipe %s: Should only be server -> client.\n",
607 get_pipe_name_from_iface(&p->syntax)));
611 /* For now just free all client data and continue processing. */
612 DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n"));
613 /* As we never do asynchronous RPC serving, we can never cancel a
614 call (as far as I know). If we ever did we'd have to send a cancel_ack
615 reply. For now, just free all client data and continue processing. */
619 /* Enable this if we're doing async rpc. */
620 /* We must check the call-id matches the outstanding callid. */
621 if(pipe_init_outgoing_data(p)) {
622 /* Send a cancel_ack PDU reply. */
623 /* We should probably check the auth-verifier here. */
624 reply = setup_cancel_ack_reply(p, &rpc_in);
630 /* We should probably check the auth-verifier here.
631 For now just free all client data and continue processing. */
632 DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n"));
637 DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p->hdr.pkt_type ));
641 /* Reset to little endian. Probably don't need this but it won't hurt. */
642 prs_set_endian_data( &p->in_data.data, RPC_LITTLE_ENDIAN);
645 DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on "
646 "pipe %s\n", get_pipe_name_from_iface(&p->syntax)));
647 set_incoming_fault(p);
648 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
649 prs_mem_free(&rpc_in);
652 * Reset the lengths. We're ready for a new pdu.
654 TALLOC_FREE(p->in_data.current_in_pdu);
655 p->in_data.pdu_needed_len = 0;
656 p->in_data.pdu_received_len = 0;
659 prs_mem_free(&rpc_in);
662 /****************************************************************************
663 Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
664 ****************************************************************************/
666 static ssize_t process_incoming_data(pipes_struct *p, char *data, size_t n)
668 size_t data_to_copy = MIN(n, RPC_MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len);
670 DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n",
671 (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len,
674 if(data_to_copy == 0) {
676 * This is an error - data is being received and there is no
677 * space in the PDU. Free the received data and go into the fault state.
679 DEBUG(0,("process_incoming_data: No space in incoming pdu buffer. Current size = %u \
680 incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned int)n ));
681 set_incoming_fault(p);
686 * If we have no data already, wait until we get at least a RPC_HEADER_LEN
687 * number of bytes before we can do anything.
690 if((p->in_data.pdu_needed_len == 0) && (p->in_data.pdu_received_len < RPC_HEADER_LEN)) {
692 * Always return here. If we have more data then the RPC_HEADER
693 * will be processed the next time around the loop.
695 return fill_rpc_header(p, data, data_to_copy);
699 * At this point we know we have at least an RPC_HEADER_LEN amount of data
700 * stored in current_in_pdu.
704 * If pdu_needed_len is zero this is a new pdu.
705 * Unmarshall the header so we know how much more
706 * data we need, then loop again.
709 if(p->in_data.pdu_needed_len == 0) {
710 ssize_t rret = unmarshall_rpc_header(p);
711 if (rret == -1 || p->in_data.pdu_needed_len > 0) {
714 /* If rret == 0 and pdu_needed_len == 0 here we have a PDU that consists
715 of an RPC_HEADER only. This is a RPC_SHUTDOWN, RPC_CO_CANCEL or RPC_ORPHANED
716 pdu type. Deal with this in process_complete_pdu(). */
720 * Ok - at this point we have a valid RPC_HEADER in p->hdr.
721 * Keep reading until we have a full pdu.
724 data_to_copy = MIN(data_to_copy, p->in_data.pdu_needed_len);
727 * Copy as much of the data as we need into the current_in_pdu buffer.
728 * pdu_needed_len becomes zero when we have a complete pdu.
731 memcpy( (char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, data_to_copy);
732 p->in_data.pdu_received_len += data_to_copy;
733 p->in_data.pdu_needed_len -= data_to_copy;
736 * Do we have a complete PDU ?
737 * (return the number of bytes handled in the call)
740 if(p->in_data.pdu_needed_len == 0) {
741 process_complete_pdu(p);
745 DEBUG(10,("process_incoming_data: not a complete PDU yet. pdu_received_len = %u, pdu_needed_len = %u\n",
746 (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len ));
748 return (ssize_t)data_to_copy;
751 /****************************************************************************
752 Accepts incoming data on an internal rpc pipe.
753 ****************************************************************************/
755 static ssize_t write_to_internal_pipe(struct pipes_struct *p, char *data, size_t n)
757 size_t data_left = n;
762 DEBUG(10,("write_to_pipe: data_left = %u\n", (unsigned int)data_left ));
764 data_used = process_incoming_data(p, data, data_left);
766 DEBUG(10,("write_to_pipe: data_used = %d\n", (int)data_used ));
772 data_left -= data_used;
779 /****************************************************************************
780 Replies to a request to read data from a pipe.
782 Headers are interspersed with the data at PDU intervals. By the time
783 this function is called, the start of the data could possibly have been
784 read by an SMBtrans (file_offset != 0).
786 Calling create_rpc_reply() here is a hack. The data should already
787 have been prepared into arrays of headers + data stream sections.
788 ****************************************************************************/
790 static ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data, size_t n,
791 bool *is_data_outstanding)
793 uint32 pdu_remaining = 0;
794 ssize_t data_returned = 0;
797 DEBUG(0,("read_from_pipe: pipe not open\n"));
801 DEBUG(6,(" name: %s len: %u\n", get_pipe_name_from_iface(&p->syntax),
805 * We cannot return more than one PDU length per
810 * This condition should result in the connection being closed.
811 * Netapp filers seem to set it to 0xffff which results in domain
812 * authentications failing. Just ignore it so things work.
815 if(n > RPC_MAX_PDU_FRAG_LEN) {
816 DEBUG(5,("read_from_pipe: too large read (%u) requested on "
817 "pipe %s. We can only service %d sized reads.\n",
818 (unsigned int)n, get_pipe_name_from_iface(&p->syntax),
819 RPC_MAX_PDU_FRAG_LEN ));
820 n = RPC_MAX_PDU_FRAG_LEN;
824 * Determine if there is still data to send in the
825 * pipe PDU buffer. Always send this first. Never
826 * send more than is left in the current PDU. The
827 * client should send a new read request for a new
831 pdu_remaining = prs_offset(&p->out_data.frag)
832 - p->out_data.current_pdu_sent;
834 if (pdu_remaining > 0) {
835 data_returned = (ssize_t)MIN(n, pdu_remaining);
837 DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, "
838 "current_pdu_sent = %u returning %d bytes.\n",
839 get_pipe_name_from_iface(&p->syntax),
840 (unsigned int)prs_offset(&p->out_data.frag),
841 (unsigned int)p->out_data.current_pdu_sent,
842 (int)data_returned));
845 prs_data_p(&p->out_data.frag)
846 + p->out_data.current_pdu_sent,
849 p->out_data.current_pdu_sent += (uint32)data_returned;
854 * At this point p->current_pdu_len == p->current_pdu_sent (which
855 * may of course be zero if this is the first return fragment.
858 DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length "
859 "= %u, prs_offset(&p->out_data.rdata) = %u.\n",
860 get_pipe_name_from_iface(&p->syntax), (int)p->fault_state,
861 (unsigned int)p->out_data.data_sent_length,
862 (unsigned int)prs_offset(&p->out_data.rdata) ));
864 if(p->out_data.data_sent_length >= prs_offset(&p->out_data.rdata)) {
866 * We have sent all possible data, return 0.
873 * We need to create a new PDU from the data left in p->rdata.
874 * Create the header/data/footers. This also sets up the fields
875 * p->current_pdu_len, p->current_pdu_sent, p->data_sent_length
876 * and stores the outgoing PDU in p->current_pdu.
879 if(!create_next_pdu(p)) {
880 DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n",
881 get_pipe_name_from_iface(&p->syntax)));
885 data_returned = MIN(n, prs_offset(&p->out_data.frag));
887 memcpy( data, prs_data_p(&p->out_data.frag), (size_t)data_returned);
888 p->out_data.current_pdu_sent += (uint32)data_returned;
891 (*is_data_outstanding) = prs_offset(&p->out_data.frag) > n;
893 return data_returned;
896 /****************************************************************************
898 ****************************************************************************/
900 static int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
903 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
907 prs_mem_free(&p->out_data.frag);
908 prs_mem_free(&p->out_data.rdata);
909 prs_mem_free(&p->in_data.data);
911 if (p->auth.auth_data_free_func) {
912 (*p->auth.auth_data_free_func)(&p->auth);
915 TALLOC_FREE(p->mem_ctx);
917 free_pipe_rpc_context( p->contexts );
919 /* Free the handles database. */
920 close_policy_by_pipe(p);
922 DLIST_REMOVE(InternalPipes, p);
931 bool fsp_is_np(struct files_struct *fsp)
933 enum FAKE_FILE_TYPE type;
935 if ((fsp == NULL) || (fsp->fake_file_handle == NULL)) {
939 type = fsp->fake_file_handle->type;
941 return ((type == FAKE_FILE_TYPE_NAMED_PIPE)
942 || (type == FAKE_FILE_TYPE_NAMED_PIPE_PROXY));
945 struct np_proxy_state {
949 static int np_proxy_state_destructor(struct np_proxy_state *state)
951 if (state->fd != -1) {
957 static struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
958 const char *pipe_name,
959 struct auth_serversupplied_info *server_info)
961 struct np_proxy_state *result;
962 struct sockaddr_un addr;
964 const char *socket_dir;
967 struct netr_SamInfo3 *info3;
968 struct named_pipe_auth_req req;
971 struct named_pipe_auth_rep rep;
972 enum ndr_err_code ndr_err;
976 result = talloc(mem_ctx, struct np_proxy_state);
977 if (result == NULL) {
978 DEBUG(0, ("talloc failed\n"));
982 result->fd = socket(AF_UNIX, SOCK_STREAM, 0);
983 if (result->fd == -1) {
984 DEBUG(10, ("socket(2) failed: %s\n", strerror(errno)));
987 talloc_set_destructor(result, np_proxy_state_destructor);
990 addr.sun_family = AF_UNIX;
992 socket_dir = lp_parm_const_string(
993 GLOBAL_SECTION_SNUM, "external_rpc_pipe", "socket_dir",
994 get_dyn_NCALRPCDIR());
995 if (socket_dir == NULL) {
996 DEBUG(0, ("externan_rpc_pipe:socket_dir not set\n"));
1000 socket_path = talloc_asprintf(talloc_tos(), "%s/np/%s",
1001 socket_dir, pipe_name);
1002 if (socket_path == NULL) {
1003 DEBUG(0, ("talloc_asprintf failed\n"));
1006 strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path));
1007 TALLOC_FREE(socket_path);
1010 if (sys_connect(result->fd, (struct sockaddr *)&addr) == -1) {
1012 DEBUG(0, ("connect(%s) failed: %s\n", addr.sun_path,
1018 info3 = talloc(talloc_tos(), struct netr_SamInfo3);
1019 if (info3 == NULL) {
1020 DEBUG(0, ("talloc failed\n"));
1024 status = serverinfo_to_SamInfo3(server_info, NULL, 0, info3);
1025 if (!NT_STATUS_IS_OK(status)) {
1027 DEBUG(0, ("serverinfo_to_SamInfo3 failed: %s\n",
1028 nt_errstr(status)));
1033 req.info.info1 = *info3;
1035 ndr_err = ndr_push_struct_blob(
1036 &req_blob, talloc_tos(), NULL, &req,
1037 (ndr_push_flags_fn_t)ndr_push_named_pipe_auth_req);
1039 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1040 DEBUG(10, ("ndr_push_named_pipe_auth_req failed: %s\n",
1041 ndr_errstr(ndr_err)));
1045 DEBUG(10, ("named_pipe_auth_req(client)[%u]\n", (uint32_t)req_blob.length));
1046 dump_data(10, req_blob.data, req_blob.length);
1048 written = write_data(result->fd, (char *)req_blob.data,
1050 if (written == -1) {
1051 DEBUG(3, ("Could not write auth req data to RPC server\n"));
1055 status = read_data(result->fd, (char *)rep_buf, sizeof(rep_buf));
1056 if (!NT_STATUS_IS_OK(status)) {
1057 DEBUG(3, ("Could not read auth result\n"));
1061 rep_blob = data_blob_const(rep_buf, sizeof(rep_buf));
1063 DEBUG(10,("name_pipe_auth_rep(client)[%u]\n", (uint32_t)rep_blob.length));
1064 dump_data(10, rep_blob.data, rep_blob.length);
1066 ndr_err = ndr_pull_struct_blob(
1067 &rep_blob, talloc_tos(), NULL, &rep,
1068 (ndr_pull_flags_fn_t)ndr_pull_named_pipe_auth_rep);
1070 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1071 DEBUG(0, ("ndr_pull_named_pipe_auth_rep failed: %s\n",
1072 ndr_errstr(ndr_err)));
1076 if (rep.length != 16) {
1077 DEBUG(0, ("req invalid length: %u != 16\n",
1082 if (strcmp(NAMED_PIPE_AUTH_MAGIC, rep.magic) != 0) {
1083 DEBUG(0, ("req invalid magic: %s != %s\n",
1084 rep.magic, NAMED_PIPE_AUTH_MAGIC));
1088 if (!NT_STATUS_IS_OK(rep.status)) {
1089 DEBUG(0, ("req failed: %s\n",
1090 nt_errstr(rep.status)));
1094 if (rep.level != 1) {
1095 DEBUG(0, ("req invalid level: %u != 1\n",
1103 TALLOC_FREE(result);
1107 NTSTATUS np_open(TALLOC_CTX *mem_ctx, const char *name,
1108 const char *client_address,
1109 struct auth_serversupplied_info *server_info,
1110 struct fake_file_handle **phandle)
1112 const char **proxy_list;
1113 struct fake_file_handle *handle;
1115 proxy_list = lp_parm_string_list(-1, "np", "proxy", NULL);
1117 handle = talloc(mem_ctx, struct fake_file_handle);
1118 if (handle == NULL) {
1119 return NT_STATUS_NO_MEMORY;
1122 if ((proxy_list != NULL) && str_list_check_ci(proxy_list, name)) {
1123 struct np_proxy_state *p;
1125 p = make_external_rpc_pipe_p(handle, name, server_info);
1127 handle->type = FAKE_FILE_TYPE_NAMED_PIPE_PROXY;
1128 handle->private_data = p;
1130 struct pipes_struct *p;
1131 struct ndr_syntax_id syntax;
1133 if (!is_known_pipename(name, &syntax)) {
1134 TALLOC_FREE(handle);
1135 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1138 p = make_internal_rpc_pipe_p(handle, &syntax, client_address,
1141 handle->type = FAKE_FILE_TYPE_NAMED_PIPE;
1142 handle->private_data = p;
1145 if (handle->private_data == NULL) {
1146 TALLOC_FREE(handle);
1147 return NT_STATUS_PIPE_NOT_AVAILABLE;
1152 return NT_STATUS_OK;
1155 struct np_write_state {
1159 static void np_write_done(struct async_req *subreq);
1161 struct async_req *np_write_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
1162 struct fake_file_handle *handle,
1163 const uint8_t *data, size_t len)
1165 struct async_req *result, *subreq;
1166 struct np_write_state *state;
1169 DEBUG(6, ("np_write_send: len: %d\n", (int)len));
1170 dump_data(50, data, len);
1172 if (!async_req_setup(mem_ctx, &result, &state,
1173 struct np_write_state)) {
1178 state->nwritten = 0;
1179 status = NT_STATUS_OK;
1183 if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE) {
1184 struct pipes_struct *p = talloc_get_type_abort(
1185 handle->private_data, struct pipes_struct);
1187 state->nwritten = write_to_internal_pipe(p, (char *)data, len);
1189 status = (state->nwritten >= 0)
1190 ? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
1194 if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE_PROXY) {
1195 struct np_proxy_state *p = talloc_get_type_abort(
1196 handle->private_data, struct np_proxy_state);
1198 state->nwritten = len;
1200 subreq = sendall_send(state, ev, p->fd, data, len, 0);
1201 if (subreq == NULL) {
1204 subreq->async.fn = np_write_done;
1205 subreq->async.priv = result;
1209 status = NT_STATUS_INVALID_HANDLE;
1211 if (async_post_ntstatus(result, ev, status)) {
1215 TALLOC_FREE(result);
1219 static void np_write_done(struct async_req *subreq)
1221 struct async_req *req = talloc_get_type_abort(
1222 subreq->async.priv, struct async_req);
1226 ret = sendall_recv(subreq, &err);
1228 async_req_nterror(req, map_nt_error_from_unix(err));
1231 async_req_done(req);
1234 NTSTATUS np_write_recv(struct async_req *req, ssize_t *pnwritten)
1236 struct np_write_state *state = talloc_get_type_abort(
1237 req->private_data, struct np_write_state);
1240 if (async_req_is_nterror(req, &status)) {
1243 *pnwritten = state->nwritten;
1244 return NT_STATUS_OK;
1247 struct np_read_state {
1249 bool is_data_outstanding;
1253 static void np_read_done(struct async_req *subreq);
1255 struct async_req *np_read_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
1256 struct fake_file_handle *handle,
1257 uint8_t *data, size_t len)
1259 struct async_req *result, *subreq;
1260 struct np_read_state *state;
1263 if (!async_req_setup(mem_ctx, &result, &state,
1264 struct np_read_state)) {
1268 if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE) {
1269 struct pipes_struct *p = talloc_get_type_abort(
1270 handle->private_data, struct pipes_struct);
1272 state->nread = read_from_internal_pipe(
1273 p, (char *)data, len, &state->is_data_outstanding);
1275 status = (state->nread >= 0)
1276 ? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
1280 if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE_PROXY) {
1281 struct np_proxy_state *p = talloc_get_type_abort(
1282 handle->private_data, struct np_proxy_state);
1286 subreq = async_recv(state, ev, p->fd, data, len, 0);
1287 if (subreq == NULL) {
1290 subreq->async.fn = np_read_done;
1291 subreq->async.priv = result;
1295 status = NT_STATUS_INVALID_HANDLE;
1297 if (async_post_ntstatus(result, ev, status)) {
1301 TALLOC_FREE(result);
1305 static void np_read_done(struct async_req *subreq)
1307 struct async_req *req = talloc_get_type_abort(
1308 subreq->async.priv, struct async_req);
1309 struct np_read_state *state = talloc_get_type_abort(
1310 req->private_data, struct np_read_state);
1315 result = async_syscall_result_ssize_t(subreq, &sys_errno);
1317 async_req_nterror(req, map_nt_error_from_unix(sys_errno));
1321 async_req_nterror(req, NT_STATUS_END_OF_FILE);
1325 state->nread = result;
1328 * We don't look at the ioctl result. We don't really care if there is
1329 * data available, because this is racy anyway.
1331 ioctl(state->fd, FIONREAD, &available);
1332 state->is_data_outstanding = (available > 0);
1334 async_req_done(req);
1337 NTSTATUS np_read_recv(struct async_req *req, ssize_t *nread,
1338 bool *is_data_outstanding)
1340 struct np_read_state *state = talloc_get_type_abort(
1341 req->private_data, struct np_read_state);
1344 if (async_req_is_nterror(req, &status)) {
1347 *nread = state->nread;
1348 *is_data_outstanding = state->is_data_outstanding;
1349 return NT_STATUS_OK;
1353 * Create a new RPC client context which uses a local dispatch function.
1355 NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
1356 const struct ndr_syntax_id *abstract_syntax,
1357 NTSTATUS (*dispatch) (struct rpc_pipe_client *cli,
1358 TALLOC_CTX *mem_ctx,
1359 const struct ndr_interface_table *table,
1360 uint32_t opnum, void *r),
1361 struct auth_serversupplied_info *serversupplied_info,
1362 struct rpc_pipe_client **presult)
1364 struct rpc_pipe_client *result;
1366 result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
1367 if (result == NULL) {
1368 return NT_STATUS_NO_MEMORY;
1371 result->abstract_syntax = *abstract_syntax;
1372 result->transfer_syntax = ndr_transfer_syntax;
1373 result->dispatch = dispatch;
1375 result->pipes_struct = make_internal_rpc_pipe_p(
1376 result, abstract_syntax, "", serversupplied_info);
1377 if (result->pipes_struct == NULL) {
1378 TALLOC_FREE(result);
1379 return NT_STATUS_NO_MEMORY;
1382 result->max_xmit_frag = -1;
1383 result->max_recv_frag = -1;
1386 return NT_STATUS_OK;