2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1998,
5 * Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
6 * Copyright (C) Jeremy Allison 1999.
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 2 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, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #define DBGC_CLASS DBGC_RPC_SRV
28 #define PIPE "\\PIPE\\"
29 #define PIPELEN strlen(PIPE)
31 static smb_np_struct *chain_p;
32 static int pipes_open;
34 #ifndef MAX_OPEN_PIPES
35 #define MAX_OPEN_PIPES 2048
39 * Sometimes I can't decide if I hate Windows printer driver
40 * writers more than I hate the Windows spooler service driver
41 * writers. This gets around a combination of bugs in the spooler
42 * and the HP 8500 PCL driver that causes a spooler spin. JRA.
44 * bumped up from 20 -> 64 after viewing traffic from WordPerfect
45 * 2002 running on NT 4.- SP6
46 * bumped up from 64 -> 256 after viewing traffic from con2prt
47 * for lots of printers on a WinNT 4.x SP6 box.
50 #ifndef MAX_OPEN_SPOOLSS_PIPES
51 #define MAX_OPEN_SPOOLSS_PIPES 256
53 static int current_spoolss_pipes_open;
55 static smb_np_struct *Pipes;
56 static pipes_struct *InternalPipes;
57 static struct bitmap *bmap;
60 * the following prototypes are declared here to avoid
61 * code being moved about too much for a patch to be
62 * disrupted / less obvious.
64 * these functions, and associated functions that they
65 * call, should be moved behind a .so module-loading
66 * system _anyway_. so that's the next step...
69 static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
70 BOOL *is_data_outstanding);
71 static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n);
72 static BOOL close_internal_rpc_pipe_hnd(void *np_conn);
73 static void *make_internal_rpc_pipe_p(char *pipe_name,
74 connection_struct *conn, uint16 vuid);
76 /****************************************************************************
77 Pipe iterator functions.
78 ****************************************************************************/
80 smb_np_struct *get_first_pipe(void)
85 smb_np_struct *get_next_pipe(smb_np_struct *p)
90 /****************************************************************************
91 Internal Pipe iterator functions.
92 ****************************************************************************/
94 pipes_struct *get_first_internal_pipe(void)
99 pipes_struct *get_next_internal_pipe(pipes_struct *p)
104 /* this must be larger than the sum of the open files and directories */
105 static int pipe_handle_offset;
107 /****************************************************************************
108 Set the pipe_handle_offset. Called from smbd/files.c
109 ****************************************************************************/
111 void set_pipe_handle_offset(int max_open_files)
113 if(max_open_files < 0x7000)
114 pipe_handle_offset = 0x7000;
116 pipe_handle_offset = max_open_files + 10; /* For safety. :-) */
119 /****************************************************************************
120 Reset pipe chain handle number.
121 ****************************************************************************/
123 void reset_chain_p(void)
128 /****************************************************************************
129 Initialise pipe handle states.
130 ****************************************************************************/
132 void init_rpc_pipe_hnd(void)
134 bmap = bitmap_allocate(MAX_OPEN_PIPES);
136 exit_server("out of memory in init_rpc_pipe_hnd");
139 /****************************************************************************
140 Initialise an outgoing packet.
141 ****************************************************************************/
143 static BOOL pipe_init_outgoing_data(pipes_struct *p)
145 output_data *o_data = &p->out_data;
147 /* Reset the offset counters. */
148 o_data->data_sent_length = 0;
149 o_data->current_pdu_len = 0;
150 o_data->current_pdu_sent = 0;
152 memset(o_data->current_pdu, '\0', sizeof(o_data->current_pdu));
154 /* Free any memory in the current return data buffer. */
155 prs_mem_free(&o_data->rdata);
158 * Initialize the outgoing RPC data buffer.
159 * we will use this as the raw data area for replying to rpc requests.
161 if(!prs_init(&o_data->rdata, MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
162 DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
169 /****************************************************************************
170 Find first available pipe slot.
171 ****************************************************************************/
173 smb_np_struct *open_rpc_pipe_p(char *pipe_name,
174 connection_struct *conn, uint16 vuid)
177 smb_np_struct *p, *p_it;
178 static int next_pipe;
179 BOOL is_spoolss_pipe = False;
181 DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n",
182 pipe_name, pipes_open));
184 if (strstr(pipe_name, "spoolss"))
185 is_spoolss_pipe = True;
187 if (is_spoolss_pipe && current_spoolss_pipes_open >= MAX_OPEN_SPOOLSS_PIPES) {
188 DEBUG(10,("open_rpc_pipe_p: spooler bug workaround. Denying open on pipe %s\n",
193 /* not repeating pipe numbers makes it easier to track things in
194 log files and prevents client bugs where pipe numbers are reused
195 over connection restarts */
197 next_pipe = (sys_getpid() ^ time(NULL)) % MAX_OPEN_PIPES;
199 i = bitmap_find(bmap, next_pipe);
202 DEBUG(0,("ERROR! Out of pipe structures\n"));
206 next_pipe = (i+1) % MAX_OPEN_PIPES;
208 for (p = Pipes; p; p = p->next)
209 DEBUG(5,("open_rpc_pipe_p: name %s pnum=%x\n", p->name, p->pnum));
211 p = (smb_np_struct *)malloc(sizeof(*p));
214 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
220 /* add a dso mechanism instead of this, here */
222 p->namedpipe_create = make_internal_rpc_pipe_p;
223 p->namedpipe_read = read_from_internal_pipe;
224 p->namedpipe_write = write_to_internal_pipe;
225 p->namedpipe_close = close_internal_rpc_pipe_hnd;
227 p->np_state = p->namedpipe_create(pipe_name, conn, vuid);
229 if (p->np_state == NULL) {
230 DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n"));
238 * Initialize the incoming RPC data buffer with one PDU worth of memory.
239 * We cheat here and say we're marshalling, as we intend to add incoming
240 * data directly into the prs_struct and we want it to auto grow. We will
241 * change the type to UNMARSALLING before processing the stream.
245 i += pipe_handle_offset;
257 p->max_trans_reply = 0;
259 fstrcpy(p->name, pipe_name);
261 DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
262 pipe_name, i, pipes_open));
266 /* Iterate over p_it as a temp variable, to display all open pipes */
267 for (p_it = Pipes; p_it; p_it = p_it->next)
268 DEBUG(5,("open pipes: name %s pnum=%x\n", p_it->name, p_it->pnum));
273 /****************************************************************************
274 Make an internal namedpipes structure
275 ****************************************************************************/
277 static void *make_internal_rpc_pipe_p(char *pipe_name,
278 connection_struct *conn, uint16 vuid)
281 user_struct *vuser = get_valid_user_struct(vuid);
283 DEBUG(4,("Create pipe requested %s\n", pipe_name));
285 if (!vuser && vuid != UID_FIELD_INVALID) {
286 DEBUG(0,("ERROR! vuid %d did not map to a valid vuser struct!\n", vuid));
290 p = (pipes_struct *)malloc(sizeof(*p));
294 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
300 if ((p->mem_ctx = talloc_init()) == NULL) {
301 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
306 if (!init_pipe_handle_list(p, pipe_name)) {
307 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
308 talloc_destroy(p->mem_ctx);
314 * Initialize the incoming RPC data buffer with one PDU worth of memory.
315 * We cheat here and say we're marshalling, as we intend to add incoming
316 * data directly into the prs_struct and we want it to auto grow. We will
317 * change the type to UNMARSALLING before processing the stream.
320 if(!prs_init(&p->in_data.data, MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
321 DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
325 DLIST_ADD(InternalPipes, p);
329 /* Ensure the connection isn't idled whilst this pipe is open. */
330 p->conn->num_files_open++;
334 p->ntlmssp_chal_flags = 0;
335 p->ntlmssp_auth_validated = False;
336 p->ntlmssp_auth_requested = False;
338 p->pipe_bound = False;
339 p->fault_state = False;
340 p->endian = RPC_LITTLE_ENDIAN;
342 ZERO_STRUCT(p->pipe_user);
344 p->pipe_user.uid = (uid_t)-1;
345 p->pipe_user.gid = (gid_t)-1;
347 /* Store the session key */
349 memcpy(p->session_key, vuser->session_key, sizeof(p->session_key));
352 * Initialize the incoming RPC struct.
355 p->in_data.pdu_needed_len = 0;
356 p->in_data.pdu_received_len = 0;
359 * Initialize the outgoing RPC struct.
362 p->out_data.current_pdu_len = 0;
363 p->out_data.current_pdu_sent = 0;
364 p->out_data.data_sent_length = 0;
367 * Initialize the outgoing RPC data buffer with no memory.
369 prs_init(&p->out_data.rdata, 0, p->mem_ctx, MARSHALL);
371 fstrcpy(p->name, pipe_name);
373 DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
374 pipe_name, pipes_open));
379 /****************************************************************************
380 Sets the fault state on incoming packets.
381 ****************************************************************************/
383 static void set_incoming_fault(pipes_struct *p)
385 prs_mem_free(&p->in_data.data);
386 p->in_data.pdu_needed_len = 0;
387 p->in_data.pdu_received_len = 0;
388 p->fault_state = True;
389 DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : vuid = 0x%x\n",
393 /****************************************************************************
394 Ensures we have at least RPC_HEADER_LEN amount of data in the incoming buffer.
395 ****************************************************************************/
397 static ssize_t fill_rpc_header(pipes_struct *p, char *data, size_t data_to_copy)
399 size_t len_needed_to_complete_hdr = MIN(data_to_copy, RPC_HEADER_LEN - p->in_data.pdu_received_len);
401 DEBUG(10,("fill_rpc_header: data_to_copy = %u, len_needed_to_complete_hdr = %u, receive_len = %u\n",
402 (unsigned int)data_to_copy, (unsigned int)len_needed_to_complete_hdr,
403 (unsigned int)p->in_data.pdu_received_len ));
405 memcpy((char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, len_needed_to_complete_hdr);
406 p->in_data.pdu_received_len += len_needed_to_complete_hdr;
408 return (ssize_t)len_needed_to_complete_hdr;
411 /****************************************************************************
412 Unmarshalls a new PDU header. Assumes the raw header data is in current_in_pdu.
413 ****************************************************************************/
415 static ssize_t unmarshall_rpc_header(pipes_struct *p)
418 * Unmarshall the header to determine the needed length.
423 if(p->in_data.pdu_received_len != RPC_HEADER_LEN) {
424 DEBUG(0,("unmarshall_rpc_header: assert on rpc header length failed.\n"));
425 set_incoming_fault(p);
429 prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL);
430 prs_set_endian_data( &rpc_in, p->endian);
432 prs_give_memory( &rpc_in, (char *)&p->in_data.current_in_pdu[0],
433 p->in_data.pdu_received_len, False);
436 * Unmarshall the header as this will tell us how much
437 * data we need to read to get the complete pdu.
438 * This also sets the endian flag in rpc_in.
441 if(!smb_io_rpc_hdr("", &p->hdr, &rpc_in, 0)) {
442 DEBUG(0,("unmarshall_rpc_header: failed to unmarshall RPC_HDR.\n"));
443 set_incoming_fault(p);
444 prs_mem_free(&rpc_in);
449 * Validate the RPC header.
452 if(p->hdr.major != 5 && p->hdr.minor != 0) {
453 DEBUG(0,("unmarshall_rpc_header: invalid major/minor numbers in RPC_HDR.\n"));
454 set_incoming_fault(p);
455 prs_mem_free(&rpc_in);
460 * If there's not data in the incoming buffer this should be the start of a new RPC.
463 if(prs_offset(&p->in_data.data) == 0) {
466 * AS/U doesn't set FIRST flag in a BIND packet it seems.
469 if ((p->hdr.pkt_type == RPC_REQUEST) && !(p->hdr.flags & RPC_FLG_FIRST)) {
471 * Ensure that the FIRST flag is set. If not then we have
472 * a stream missmatch.
475 DEBUG(0,("unmarshall_rpc_header: FIRST flag not set in first PDU !\n"));
476 set_incoming_fault(p);
477 prs_mem_free(&rpc_in);
482 * If this is the first PDU then set the endianness
483 * flag in the pipe. We will need this when parsing all
487 p->endian = rpc_in.bigendian_data;
489 DEBUG(5,("unmarshall_rpc_header: using %sendian RPC\n",
490 p->endian == RPC_LITTLE_ENDIAN ? "little-" : "big-" ));
495 * If this is *NOT* the first PDU then check the endianness
496 * flag in the pipe is the same as that in the PDU.
499 if (p->endian != rpc_in.bigendian_data) {
500 DEBUG(0,("unmarshall_rpc_header: FIRST endianness flag (%d) different in next PDU !\n", (int)p->endian));
501 set_incoming_fault(p);
502 prs_mem_free(&rpc_in);
508 * Ensure that the pdu length is sane.
511 if((p->hdr.frag_len < RPC_HEADER_LEN) || (p->hdr.frag_len > MAX_PDU_FRAG_LEN)) {
512 DEBUG(0,("unmarshall_rpc_header: assert on frag length failed.\n"));
513 set_incoming_fault(p);
514 prs_mem_free(&rpc_in);
518 DEBUG(10,("unmarshall_rpc_header: type = %u, flags = %u\n", (unsigned int)p->hdr.pkt_type,
519 (unsigned int)p->hdr.flags ));
522 * Adjust for the header we just ate.
524 p->in_data.pdu_received_len = 0;
525 p->in_data.pdu_needed_len = (uint32)p->hdr.frag_len - RPC_HEADER_LEN;
528 * Null the data we just ate.
531 memset((char *)&p->in_data.current_in_pdu[0], '\0', RPC_HEADER_LEN);
533 prs_mem_free(&rpc_in);
535 return 0; /* No extra data processed. */
538 /****************************************************************************
539 Call this to free any talloc'ed memory. Do this before and after processing
541 ****************************************************************************/
543 void free_pipe_context(pipes_struct *p)
546 DEBUG(3,("free_pipe_context: destroying talloc pool of size %u\n", talloc_pool_size(p->mem_ctx) ));
547 talloc_destroy_pool(p->mem_ctx);
549 p->mem_ctx = talloc_init();
550 if (p->mem_ctx == NULL)
551 p->fault_state = True;
555 /****************************************************************************
556 Processes a request pdu. This will do auth processing if needed, and
557 appends the data into the complete stream if the LAST flag is not set.
558 ****************************************************************************/
560 static BOOL process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p)
562 BOOL auth_verify = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SIGN) != 0);
563 size_t data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
564 (auth_verify ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len;
567 DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
568 set_incoming_fault(p);
573 * Check if we need to do authentication processing.
574 * This is only done on requests, not binds.
578 * Read the RPC request header.
581 if(!smb_io_rpc_hdr_req("req", &p->hdr_req, rpc_in_p, 0)) {
582 DEBUG(0,("process_request_pdu: failed to unmarshall RPC_HDR_REQ.\n"));
583 set_incoming_fault(p);
587 if(p->ntlmssp_auth_validated && !api_pipe_auth_process(p, rpc_in_p)) {
588 DEBUG(0,("process_request_pdu: failed to do auth processing.\n"));
589 set_incoming_fault(p);
593 if (p->ntlmssp_auth_requested && !p->ntlmssp_auth_validated) {
596 * Authentication _was_ requested and it already failed.
599 DEBUG(0,("process_request_pdu: RPC request received on pipe %s where \
600 authentication failed. Denying the request.\n", p->name));
601 set_incoming_fault(p);
606 * Check the data length doesn't go over the 15Mb limit.
607 * increased after observing a bug in the Windows NT 4.0 SP6a
608 * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC
609 * will not fit in the initial buffer of size 0x1068 --jerry 22/01/2002
612 if(prs_offset(&p->in_data.data) + data_len > 15*1024*1024) {
613 DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
614 (unsigned int)prs_data_size(&p->in_data.data), (unsigned int)data_len ));
615 set_incoming_fault(p);
620 * Append the data portion into the buffer and return.
624 char *data_from = prs_data_p(rpc_in_p) + prs_offset(rpc_in_p);
626 if(!prs_append_data(&p->in_data.data, data_from, data_len)) {
627 DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
628 (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) ));
629 set_incoming_fault(p);
635 if(p->hdr.flags & RPC_FLG_LAST) {
638 * Ok - we finally have a complete RPC stream.
639 * Call the rpc command to process it.
643 * Ensure the internal prs buffer size is *exactly* the same
644 * size as the current offset.
647 if(!prs_set_buffer_size(&p->in_data.data, prs_offset(&p->in_data.data)))
649 DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n"));
650 set_incoming_fault(p);
655 * Set the parse offset to the start of the data and set the
656 * prs_struct to UNMARSHALL.
659 prs_set_offset(&p->in_data.data, 0);
660 prs_switch_type(&p->in_data.data, UNMARSHALL);
663 * Process the complete data stream here.
666 free_pipe_context(p);
668 if(pipe_init_outgoing_data(p))
669 ret = api_pipe_request(p);
671 free_pipe_context(p);
674 * We have consumed the whole data stream. Set back to
675 * marshalling and set the offset back to the start of
676 * the buffer to re-use it (we could also do a prs_mem_free()
677 * and then re_init on the next start of PDU. Not sure which
678 * is best here.... JRA.
681 prs_switch_type(&p->in_data.data, MARSHALL);
682 prs_set_offset(&p->in_data.data, 0);
689 /****************************************************************************
690 Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
691 already been parsed and stored in p->hdr.
692 ****************************************************************************/
694 static ssize_t process_complete_pdu(pipes_struct *p)
697 size_t data_len = p->in_data.pdu_received_len;
698 char *data_p = (char *)&p->in_data.current_in_pdu[0];
702 DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
704 set_incoming_fault(p);
705 setup_fault_pdu(p, NT_STATUS(0x1c010002));
706 return (ssize_t)data_len;
709 prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL);
712 * Ensure we're using the corrent endianness for both the
713 * RPC header flags and the raw data we will be reading from.
716 prs_set_endian_data( &rpc_in, p->endian);
717 prs_set_endian_data( &p->in_data.data, p->endian);
719 prs_give_memory( &rpc_in, data_p, (uint32)data_len, False);
721 DEBUG(10,("process_complete_pdu: processing packet type %u\n",
722 (unsigned int)p->hdr.pkt_type ));
724 switch (p->hdr.pkt_type) {
728 * We assume that a pipe bind is only in one pdu.
730 if(pipe_init_outgoing_data(p))
731 reply = api_pipe_bind_req(p, &rpc_in);
735 * We assume that a pipe bind_resp is only in one pdu.
737 if(pipe_init_outgoing_data(p))
738 reply = api_pipe_bind_auth_resp(p, &rpc_in);
741 reply = process_request_pdu(p, &rpc_in);
744 DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p->hdr.pkt_type ));
748 /* Reset to little endian. Probably don't need this but it won't hurt. */
749 prs_set_endian_data( &p->in_data.data, RPC_LITTLE_ENDIAN);
752 DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p->pipe_srv_name));
753 set_incoming_fault(p);
754 setup_fault_pdu(p, NT_STATUS(0x1c010002));
755 prs_mem_free(&rpc_in);
758 * Reset the lengths. We're ready for a new pdu.
760 p->in_data.pdu_needed_len = 0;
761 p->in_data.pdu_received_len = 0;
764 prs_mem_free(&rpc_in);
765 return (ssize_t)data_len;
768 /****************************************************************************
769 Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
770 ****************************************************************************/
772 static ssize_t process_incoming_data(pipes_struct *p, char *data, size_t n)
774 size_t data_to_copy = MIN(n, MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len);
776 DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n",
777 (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len,
780 if(data_to_copy == 0) {
782 * This is an error - data is being received and there is no
783 * space in the PDU. Free the received data and go into the fault state.
785 DEBUG(0,("process_incoming_data: No space in incoming pdu buffer. Current size = %u \
786 incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned int)n ));
787 set_incoming_fault(p);
792 * If we have no data already, wait until we get at least a RPC_HEADER_LEN
793 * number of bytes before we can do anything.
796 if((p->in_data.pdu_needed_len == 0) && (p->in_data.pdu_received_len < RPC_HEADER_LEN)) {
798 * Always return here. If we have more data then the RPC_HEADER
799 * will be processed the next time around the loop.
801 return fill_rpc_header(p, data, data_to_copy);
805 * At this point we know we have at least an RPC_HEADER_LEN amount of data
806 * stored in current_in_pdu.
810 * If pdu_needed_len is zero this is a new pdu.
811 * Unmarshall the header so we know how much more
812 * data we need, then loop again.
815 if(p->in_data.pdu_needed_len == 0)
816 return unmarshall_rpc_header(p);
819 * Ok - at this point we have a valid RPC_HEADER in p->hdr.
820 * Keep reading until we have a full pdu.
823 data_to_copy = MIN(data_to_copy, p->in_data.pdu_needed_len);
826 * Copy as much of the data as we need into the current_in_pdu buffer.
829 memcpy( (char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, data_to_copy);
830 p->in_data.pdu_received_len += data_to_copy;
833 * Do we have a complete PDU ?
836 if(p->in_data.pdu_received_len == p->in_data.pdu_needed_len)
837 return process_complete_pdu(p);
839 DEBUG(10,("process_incoming_data: not a complete PDU yet. pdu_received_len = %u, pdu_needed_len = %u\n",
840 (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len ));
842 return (ssize_t)data_to_copy;
846 /****************************************************************************
847 Accepts incoming data on an rpc pipe.
848 ****************************************************************************/
850 ssize_t write_to_pipe(smb_np_struct *p, char *data, size_t n)
852 DEBUG(6,("write_to_pipe: %x", p->pnum));
854 DEBUG(6,(" name: %s open: %s len: %d\n",
855 p->name, BOOLSTR(p->open), (int)n));
857 dump_data(50, data, n);
859 return p->namedpipe_write(p->np_state, data, n);
862 /****************************************************************************
863 Accepts incoming data on an internal rpc pipe.
864 ****************************************************************************/
866 static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n)
868 pipes_struct *p = (pipes_struct*)np_conn;
869 size_t data_left = n;
874 DEBUG(10,("write_to_pipe: data_left = %u\n", (unsigned int)data_left ));
876 data_used = process_incoming_data(p, data, data_left);
878 DEBUG(10,("write_to_pipe: data_used = %d\n", (int)data_used ));
883 data_left -= data_used;
890 /****************************************************************************
891 Replies to a request to read data from a pipe.
893 Headers are interspersed with the data at PDU intervals. By the time
894 this function is called, the start of the data could possibly have been
895 read by an SMBtrans (file_offset != 0).
897 Calling create_rpc_reply() here is a hack. The data should already
898 have been prepared into arrays of headers + data stream sections.
899 ****************************************************************************/
901 ssize_t read_from_pipe(smb_np_struct *p, char *data, size_t n,
902 BOOL *is_data_outstanding)
904 if (!p || !p->open) {
905 DEBUG(0,("read_from_pipe: pipe not open\n"));
909 DEBUG(6,("read_from_pipe: %x", p->pnum));
911 return p->namedpipe_read(p->np_state, data, n, is_data_outstanding);
914 /****************************************************************************
915 Replies to a request to read data from a pipe.
917 Headers are interspersed with the data at PDU intervals. By the time
918 this function is called, the start of the data could possibly have been
919 read by an SMBtrans (file_offset != 0).
921 Calling create_rpc_reply() here is a hack. The data should already
922 have been prepared into arrays of headers + data stream sections.
923 ****************************************************************************/
925 static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
926 BOOL *is_data_outstanding)
928 pipes_struct *p = (pipes_struct*)np_conn;
929 uint32 pdu_remaining = 0;
930 ssize_t data_returned = 0;
933 DEBUG(0,("read_from_pipe: pipe not open\n"));
937 DEBUG(6,(" name: %s len: %u\n", p->name, (unsigned int)n));
940 * We cannot return more than one PDU length per
945 * This condition should result in the connection being closed.
946 * Netapp filers seem to set it to 0xffff which results in domain
947 * authentications failing. Just ignore it so things work.
950 if(n > MAX_PDU_FRAG_LEN) {
951 DEBUG(5,("read_from_pipe: too large read (%u) requested on \
952 pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, MAX_PDU_FRAG_LEN ));
956 * Determine if there is still data to send in the
957 * pipe PDU buffer. Always send this first. Never
958 * send more than is left in the current PDU. The
959 * client should send a new read request for a new
963 if((pdu_remaining = p->out_data.current_pdu_len - p->out_data.current_pdu_sent) > 0) {
964 data_returned = (ssize_t)MIN(n, pdu_remaining);
966 DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, current_pdu_sent = %u \
967 returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len,
968 (unsigned int)p->out_data.current_pdu_sent, (int)data_returned));
970 memcpy( data, &p->out_data.current_pdu[p->out_data.current_pdu_sent], (size_t)data_returned);
971 p->out_data.current_pdu_sent += (uint32)data_returned;
976 * At this point p->current_pdu_len == p->current_pdu_sent (which
977 * may of course be zero if this is the first return fragment.
980 DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length \
981 = %u, prs_offset(&p->out_data.rdata) = %u.\n",
982 p->name, (int)p->fault_state, (unsigned int)p->out_data.data_sent_length, (unsigned int)prs_offset(&p->out_data.rdata) ));
984 if(p->out_data.data_sent_length >= prs_offset(&p->out_data.rdata)) {
986 * We have sent all possible data, return 0.
993 * We need to create a new PDU from the data left in p->rdata.
994 * Create the header/data/footers. This also sets up the fields
995 * p->current_pdu_len, p->current_pdu_sent, p->data_sent_length
996 * and stores the outgoing PDU in p->current_pdu.
999 if(!create_next_pdu(p)) {
1000 DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n", p->name));
1004 data_returned = MIN(n, p->out_data.current_pdu_len);
1006 memcpy( data, p->out_data.current_pdu, (size_t)data_returned);
1007 p->out_data.current_pdu_sent += (uint32)data_returned;
1011 (*is_data_outstanding) = p->out_data.current_pdu_len > n;
1012 return data_returned;
1015 /****************************************************************************
1016 Wait device state on a pipe. Exactly what this is for is unknown...
1017 ****************************************************************************/
1019 BOOL wait_rpc_pipe_hnd_state(smb_np_struct *p, uint16 priority)
1025 DEBUG(3,("wait_rpc_pipe_hnd_state: Setting pipe wait state priority=%x on pipe (name=%s)\n",
1026 priority, p->name));
1028 p->priority = priority;
1033 DEBUG(3,("wait_rpc_pipe_hnd_state: Error setting pipe wait state priority=%x (name=%s)\n",
1034 priority, p->name));
1039 /****************************************************************************
1040 Set device state on a pipe. Exactly what this is for is unknown...
1041 ****************************************************************************/
1043 BOOL set_rpc_pipe_hnd_state(smb_np_struct *p, uint16 device_state)
1049 DEBUG(3,("set_rpc_pipe_hnd_state: Setting pipe device state=%x on pipe (name=%s)\n",
1050 device_state, p->name));
1052 p->device_state = device_state;
1057 DEBUG(3,("set_rpc_pipe_hnd_state: Error setting pipe device state=%x (name=%s)\n",
1058 device_state, p->name));
1063 /****************************************************************************
1065 ****************************************************************************/
1067 BOOL close_rpc_pipe_hnd(smb_np_struct *p)
1070 DEBUG(0,("Invalid pipe in close_rpc_pipe_hnd\n"));
1074 p->namedpipe_close(p->np_state);
1076 bitmap_clear(bmap, p->pnum - pipe_handle_offset);
1080 DEBUG(4,("closed pipe name %s pnum=%x (pipes_open=%d)\n",
1081 p->name, p->pnum, pipes_open));
1083 DLIST_REMOVE(Pipes, p);
1092 /****************************************************************************
1094 ****************************************************************************/
1096 static BOOL close_internal_rpc_pipe_hnd(void *np_conn)
1098 pipes_struct *p = (pipes_struct *)np_conn;
1100 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
1104 prs_mem_free(&p->out_data.rdata);
1105 prs_mem_free(&p->in_data.data);
1108 talloc_destroy(p->mem_ctx);
1110 /* Free the handles database. */
1111 close_policy_by_pipe(p);
1113 delete_nt_token(&p->pipe_user.nt_user_token);
1114 SAFE_FREE(p->pipe_user.groups);
1116 DLIST_REMOVE(InternalPipes, p);
1118 p->conn->num_files_open--;
1127 /****************************************************************************
1128 Find an rpc pipe given a pipe handle in a buffer and an offset.
1129 ****************************************************************************/
1131 smb_np_struct *get_rpc_pipe_p(char *buf, int where)
1133 int pnum = SVAL(buf,where);
1138 return get_rpc_pipe(pnum);
1141 /****************************************************************************
1142 Find an rpc pipe given a pipe handle.
1143 ****************************************************************************/
1145 smb_np_struct *get_rpc_pipe(int pnum)
1149 DEBUG(4,("search for pipe pnum=%x\n", pnum));
1151 for (p=Pipes;p;p=p->next)
1152 DEBUG(5,("pipe name %s pnum=%x (pipes_open=%d)\n",
1153 p->name, p->pnum, pipes_open));
1155 for (p=Pipes;p;p=p->next) {
1156 if (p->pnum == pnum) {