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
;
35 * Sometimes I can't decide if I hate Windows printer driver
36 * writers more than I hate the Windows spooler service driver
37 * writers. This gets around a combination of bugs in the spooler
38 * and the HP 8500 PCL driver that causes a spooler spin. JRA.
40 * bumped up from 20 -> 64 after viewing traffic from WordPerfect
41 * 2002 running on NT 4.- SP6
42 * bumped up from 64 -> 256 after viewing traffic from con2prt
43 * for lots of printers on a WinNT 4.x SP6 box.
46 #ifndef MAX_OPEN_SPOOLSS_PIPES
47 #define MAX_OPEN_SPOOLSS_PIPES 256
49 static int current_spoolss_pipes_open
;
51 static smb_np_struct
*Pipes
;
52 static pipes_struct
*InternalPipes
;
53 static struct bitmap
*bmap
;
56 * the following prototypes are declared here to avoid
57 * code being moved about too much for a patch to be
58 * disrupted / less obvious.
60 * these functions, and associated functions that they
61 * call, should be moved behind a .so module-loading
62 * system _anyway_. so that's the next step...
65 static ssize_t
read_from_internal_pipe(void *np_conn
, char *data
, size_t n
,
66 BOOL
*is_data_outstanding
);
67 static ssize_t
write_to_internal_pipe(void *np_conn
, char *data
, size_t n
);
68 static BOOL
close_internal_rpc_pipe_hnd(void *np_conn
);
69 static void *make_internal_rpc_pipe_p(char *pipe_name
,
70 connection_struct
*conn
, uint16 vuid
);
72 /****************************************************************************
73 Pipe iterator functions.
74 ****************************************************************************/
76 smb_np_struct
*get_first_pipe(void)
81 smb_np_struct
*get_next_pipe(smb_np_struct
*p
)
86 /****************************************************************************
87 Internal Pipe iterator functions.
88 ****************************************************************************/
90 pipes_struct
*get_first_internal_pipe(void)
95 pipes_struct
*get_next_internal_pipe(pipes_struct
*p
)
100 /* this must be larger than the sum of the open files and directories */
101 static int pipe_handle_offset
;
103 /****************************************************************************
104 Set the pipe_handle_offset. Called from smbd/files.c
105 ****************************************************************************/
107 void set_pipe_handle_offset(int max_open_files
)
109 if(max_open_files
< 0x7000)
110 pipe_handle_offset
= 0x7000;
112 pipe_handle_offset
= max_open_files
+ 10; /* For safety. :-) */
115 /****************************************************************************
116 Reset pipe chain handle number.
117 ****************************************************************************/
119 void reset_chain_p(void)
124 /****************************************************************************
125 Initialise pipe handle states.
126 ****************************************************************************/
128 void init_rpc_pipe_hnd(void)
130 bmap
= bitmap_allocate(MAX_OPEN_PIPES
);
132 exit_server("out of memory in init_rpc_pipe_hnd");
135 /****************************************************************************
136 Initialise an outgoing packet.
137 ****************************************************************************/
139 static BOOL
pipe_init_outgoing_data(pipes_struct
*p
)
141 output_data
*o_data
= &p
->out_data
;
143 /* Reset the offset counters. */
144 o_data
->data_sent_length
= 0;
145 o_data
->current_pdu_len
= 0;
146 o_data
->current_pdu_sent
= 0;
148 memset(o_data
->current_pdu
, '\0', sizeof(o_data
->current_pdu
));
150 /* Free any memory in the current return data buffer. */
151 prs_mem_free(&o_data
->rdata
);
154 * Initialize the outgoing RPC data buffer.
155 * we will use this as the raw data area for replying to rpc requests.
157 if(!prs_init(&o_data
->rdata
, MAX_PDU_FRAG_LEN
, p
->mem_ctx
, MARSHALL
)) {
158 DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
165 /****************************************************************************
166 Find first available pipe slot.
167 ****************************************************************************/
169 smb_np_struct
*open_rpc_pipe_p(char *pipe_name
,
170 connection_struct
*conn
, uint16 vuid
)
173 smb_np_struct
*p
, *p_it
;
174 static int next_pipe
;
175 BOOL is_spoolss_pipe
= False
;
177 DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n",
178 pipe_name
, pipes_open
));
180 if (strstr(pipe_name
, "spoolss"))
181 is_spoolss_pipe
= True
;
183 if (is_spoolss_pipe
&& current_spoolss_pipes_open
>= MAX_OPEN_SPOOLSS_PIPES
) {
184 DEBUG(10,("open_rpc_pipe_p: spooler bug workaround. Denying open on pipe %s\n",
189 /* not repeating pipe numbers makes it easier to track things in
190 log files and prevents client bugs where pipe numbers are reused
191 over connection restarts */
193 next_pipe
= (sys_getpid() ^ time(NULL
)) % MAX_OPEN_PIPES
;
195 i
= bitmap_find(bmap
, next_pipe
);
198 DEBUG(0,("ERROR! Out of pipe structures\n"));
202 next_pipe
= (i
+1) % MAX_OPEN_PIPES
;
204 for (p
= Pipes
; p
; p
= p
->next
)
205 DEBUG(5,("open_rpc_pipe_p: name %s pnum=%x\n", p
->name
, p
->pnum
));
207 p
= (smb_np_struct
*)malloc(sizeof(*p
));
210 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
216 /* add a dso mechanism instead of this, here */
218 p
->namedpipe_create
= make_internal_rpc_pipe_p
;
219 p
->namedpipe_read
= read_from_internal_pipe
;
220 p
->namedpipe_write
= write_to_internal_pipe
;
221 p
->namedpipe_close
= close_internal_rpc_pipe_hnd
;
223 p
->np_state
= p
->namedpipe_create(pipe_name
, conn
, vuid
);
225 if (p
->np_state
== NULL
) {
226 DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n"));
234 * Initialize the incoming RPC data buffer with one PDU worth of memory.
235 * We cheat here and say we're marshalling, as we intend to add incoming
236 * data directly into the prs_struct and we want it to auto grow. We will
237 * change the type to UNMARSALLING before processing the stream.
241 i
+= pipe_handle_offset
;
253 p
->max_trans_reply
= 0;
255 fstrcpy(p
->name
, pipe_name
);
257 DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
258 pipe_name
, i
, pipes_open
));
262 /* Iterate over p_it as a temp variable, to display all open pipes */
263 for (p_it
= Pipes
; p_it
; p_it
= p_it
->next
)
264 DEBUG(5,("open pipes: name %s pnum=%x\n", p_it
->name
, p_it
->pnum
));
269 /****************************************************************************
270 Make an internal namedpipes structure
271 ****************************************************************************/
273 static void *make_internal_rpc_pipe_p(char *pipe_name
,
274 connection_struct
*conn
, uint16 vuid
)
277 user_struct
*vuser
= get_valid_user_struct(vuid
);
279 DEBUG(4,("Create pipe requested %s\n", pipe_name
));
281 if (!vuser
&& vuid
!= UID_FIELD_INVALID
) {
282 DEBUG(0,("ERROR! vuid %d did not map to a valid vuser struct!\n", vuid
));
286 p
= (pipes_struct
*)malloc(sizeof(*p
));
290 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
296 if ((p
->mem_ctx
= talloc_init("pipe %s %p", pipe_name
, p
)) == NULL
) {
297 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
302 if (!init_pipe_handle_list(p
, pipe_name
)) {
303 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
304 talloc_destroy(p
->mem_ctx
);
310 * Initialize the incoming RPC data buffer with one PDU worth of memory.
311 * We cheat here and say we're marshalling, as we intend to add incoming
312 * data directly into the prs_struct and we want it to auto grow. We will
313 * change the type to UNMARSALLING before processing the stream.
316 if(!prs_init(&p
->in_data
.data
, MAX_PDU_FRAG_LEN
, p
->mem_ctx
, MARSHALL
)) {
317 DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
321 DLIST_ADD(InternalPipes
, p
);
325 /* Ensure the connection isn't idled whilst this pipe is open. */
326 p
->conn
->num_files_open
++;
330 p
->ntlmssp_chal_flags
= 0;
331 p
->ntlmssp_auth_validated
= False
;
332 p
->ntlmssp_auth_requested
= False
;
334 p
->pipe_bound
= False
;
335 p
->fault_state
= False
;
336 p
->endian
= RPC_LITTLE_ENDIAN
;
338 ZERO_STRUCT(p
->pipe_user
);
340 p
->pipe_user
.uid
= (uid_t
)-1;
341 p
->pipe_user
.gid
= (gid_t
)-1;
343 /* Store the session key and NT_TOKEN */
345 p
->session_key
= data_blob(vuser
->session_key
.data
, vuser
->session_key
.length
);
346 p
->pipe_user
.nt_user_token
= dup_nt_token(vuser
->nt_user_token
);
347 init_privilege(&p
->pipe_user
.privs
);
348 dup_priv_set(p
->pipe_user
.privs
, vuser
->privs
);
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 %lu\n", (unsigned long)talloc_pool_size(p
->mem_ctx
) ));
547 talloc_destroy_pool(p
->mem_ctx
);
549 p
->mem_ctx
= talloc_init("pipe %s %p", p
->name
, p
);
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 "
600 "where authentication failed. Denying the request.\n",
602 set_incoming_fault(p
);
606 if (p
->netsec_auth_validated
&& !api_pipe_netsec_process(p
, rpc_in_p
)) {
607 DEBUG(0,("process_request_pdu: failed to do schannel processing.\n"));
608 set_incoming_fault(p
);
613 * Check the data length doesn't go over the 15Mb limit.
614 * increased after observing a bug in the Windows NT 4.0 SP6a
615 * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC
616 * will not fit in the initial buffer of size 0x1068 --jerry 22/01/2002
619 if(prs_offset(&p
->in_data
.data
) + data_len
> 15*1024*1024) {
620 DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
621 (unsigned int)prs_data_size(&p
->in_data
.data
), (unsigned int)data_len
));
622 set_incoming_fault(p
);
627 * Append the data portion into the buffer and return.
630 if(!prs_append_some_prs_data(&p
->in_data
.data
, rpc_in_p
, prs_offset(rpc_in_p
), data_len
)) {
631 DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
632 (unsigned int)data_len
, (unsigned int)prs_data_size(&p
->in_data
.data
) ));
633 set_incoming_fault(p
);
637 if(p
->hdr
.flags
& RPC_FLG_LAST
) {
640 * Ok - we finally have a complete RPC stream.
641 * Call the rpc command to process it.
645 * Ensure the internal prs buffer size is *exactly* the same
646 * size as the current offset.
649 if(!prs_set_buffer_size(&p
->in_data
.data
, prs_offset(&p
->in_data
.data
)))
651 DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n"));
652 set_incoming_fault(p
);
657 * Set the parse offset to the start of the data and set the
658 * prs_struct to UNMARSHALL.
661 prs_set_offset(&p
->in_data
.data
, 0);
662 prs_switch_type(&p
->in_data
.data
, UNMARSHALL
);
665 * Process the complete data stream here.
668 free_pipe_context(p
);
670 if(pipe_init_outgoing_data(p
))
671 ret
= api_pipe_request(p
);
673 free_pipe_context(p
);
676 * We have consumed the whole data stream. Set back to
677 * marshalling and set the offset back to the start of
678 * the buffer to re-use it (we could also do a prs_mem_free()
679 * and then re_init on the next start of PDU. Not sure which
680 * is best here.... JRA.
683 prs_switch_type(&p
->in_data
.data
, MARSHALL
);
684 prs_set_offset(&p
->in_data
.data
, 0);
691 /****************************************************************************
692 Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
693 already been parsed and stored in p->hdr.
694 ****************************************************************************/
696 static ssize_t
process_complete_pdu(pipes_struct
*p
)
699 size_t data_len
= p
->in_data
.pdu_received_len
;
700 char *data_p
= (char *)&p
->in_data
.current_in_pdu
[0];
704 DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
706 set_incoming_fault(p
);
707 setup_fault_pdu(p
, NT_STATUS(0x1c010002));
708 return (ssize_t
)data_len
;
711 prs_init( &rpc_in
, 0, p
->mem_ctx
, UNMARSHALL
);
714 * Ensure we're using the corrent endianness for both the
715 * RPC header flags and the raw data we will be reading from.
718 prs_set_endian_data( &rpc_in
, p
->endian
);
719 prs_set_endian_data( &p
->in_data
.data
, p
->endian
);
721 prs_give_memory( &rpc_in
, data_p
, (uint32
)data_len
, False
);
723 DEBUG(10,("process_complete_pdu: processing packet type %u\n",
724 (unsigned int)p
->hdr
.pkt_type
));
726 switch (p
->hdr
.pkt_type
) {
730 * We assume that a pipe bind is only in one pdu.
732 if(pipe_init_outgoing_data(p
))
733 reply
= api_pipe_bind_req(p
, &rpc_in
);
737 * We assume that a pipe bind_resp is only in one pdu.
739 if(pipe_init_outgoing_data(p
))
740 reply
= api_pipe_bind_auth_resp(p
, &rpc_in
);
743 reply
= process_request_pdu(p
, &rpc_in
);
746 DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p
->hdr
.pkt_type
));
750 /* Reset to little endian. Probably don't need this but it won't hurt. */
751 prs_set_endian_data( &p
->in_data
.data
, RPC_LITTLE_ENDIAN
);
754 DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p
->pipe_srv_name
));
755 set_incoming_fault(p
);
756 setup_fault_pdu(p
, NT_STATUS(0x1c010002));
757 prs_mem_free(&rpc_in
);
760 * Reset the lengths. We're ready for a new pdu.
762 p
->in_data
.pdu_needed_len
= 0;
763 p
->in_data
.pdu_received_len
= 0;
766 prs_mem_free(&rpc_in
);
767 return (ssize_t
)data_len
;
770 /****************************************************************************
771 Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
772 ****************************************************************************/
774 static ssize_t
process_incoming_data(pipes_struct
*p
, char *data
, size_t n
)
776 size_t data_to_copy
= MIN(n
, MAX_PDU_FRAG_LEN
- p
->in_data
.pdu_received_len
);
777 size_t old_pdu_received_len
= p
->in_data
.pdu_received_len
;
779 DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n",
780 (unsigned int)p
->in_data
.pdu_received_len
, (unsigned int)p
->in_data
.pdu_needed_len
,
783 if(data_to_copy
== 0) {
785 * This is an error - data is being received and there is no
786 * space in the PDU. Free the received data and go into the fault state.
788 DEBUG(0,("process_incoming_data: No space in incoming pdu buffer. Current size = %u \
789 incoming data size = %u\n", (unsigned int)p
->in_data
.pdu_received_len
, (unsigned int)n
));
790 set_incoming_fault(p
);
795 * If we have no data already, wait until we get at least a RPC_HEADER_LEN
796 * number of bytes before we can do anything.
799 if((p
->in_data
.pdu_needed_len
== 0) && (p
->in_data
.pdu_received_len
< RPC_HEADER_LEN
)) {
801 * Always return here. If we have more data then the RPC_HEADER
802 * will be processed the next time around the loop.
804 return fill_rpc_header(p
, data
, data_to_copy
);
808 * At this point we know we have at least an RPC_HEADER_LEN amount of data
809 * stored in current_in_pdu.
813 * If pdu_needed_len is zero this is a new pdu.
814 * Unmarshall the header so we know how much more
815 * data we need, then loop again.
818 if(p
->in_data
.pdu_needed_len
== 0)
819 return unmarshall_rpc_header(p
);
822 * Ok - at this point we have a valid RPC_HEADER in p->hdr.
823 * Keep reading until we have a full pdu.
826 data_to_copy
= MIN(data_to_copy
, p
->in_data
.pdu_needed_len
);
829 * Copy as much of the data as we need into the current_in_pdu buffer.
832 memcpy( (char *)&p
->in_data
.current_in_pdu
[p
->in_data
.pdu_received_len
], data
, data_to_copy
);
833 p
->in_data
.pdu_received_len
+= data_to_copy
;
836 * Do we have a complete PDU ?
837 * (return the nym of bytes handled in the call)
840 if(p
->in_data
.pdu_received_len
== p
->in_data
.pdu_needed_len
)
841 return process_complete_pdu(p
) - old_pdu_received_len
;
843 DEBUG(10,("process_incoming_data: not a complete PDU yet. pdu_received_len = %u, pdu_needed_len = %u\n",
844 (unsigned int)p
->in_data
.pdu_received_len
, (unsigned int)p
->in_data
.pdu_needed_len
));
846 return (ssize_t
)data_to_copy
;
850 /****************************************************************************
851 Accepts incoming data on an rpc pipe.
852 ****************************************************************************/
854 ssize_t
write_to_pipe(smb_np_struct
*p
, char *data
, size_t n
)
856 DEBUG(6,("write_to_pipe: %x", p
->pnum
));
858 DEBUG(6,(" name: %s open: %s len: %d\n",
859 p
->name
, BOOLSTR(p
->open
), (int)n
));
861 dump_data(50, data
, n
);
863 return p
->namedpipe_write(p
->np_state
, data
, n
);
866 /****************************************************************************
867 Accepts incoming data on an internal rpc pipe.
868 ****************************************************************************/
870 static ssize_t
write_to_internal_pipe(void *np_conn
, char *data
, size_t n
)
872 pipes_struct
*p
= (pipes_struct
*)np_conn
;
873 size_t data_left
= n
;
878 DEBUG(10,("write_to_pipe: data_left = %u\n", (unsigned int)data_left
));
880 data_used
= process_incoming_data(p
, data
, data_left
);
882 DEBUG(10,("write_to_pipe: data_used = %d\n", (int)data_used
));
887 data_left
-= data_used
;
894 /****************************************************************************
895 Replies to a request to read data from a pipe.
897 Headers are interspersed with the data at PDU intervals. By the time
898 this function is called, the start of the data could possibly have been
899 read by an SMBtrans (file_offset != 0).
901 Calling create_rpc_reply() here is a hack. The data should already
902 have been prepared into arrays of headers + data stream sections.
903 ****************************************************************************/
905 ssize_t
read_from_pipe(smb_np_struct
*p
, char *data
, size_t n
,
906 BOOL
*is_data_outstanding
)
908 if (!p
|| !p
->open
) {
909 DEBUG(0,("read_from_pipe: pipe not open\n"));
913 DEBUG(6,("read_from_pipe: %x", p
->pnum
));
915 return p
->namedpipe_read(p
->np_state
, data
, n
, is_data_outstanding
);
918 /****************************************************************************
919 Replies to a request to read data from a pipe.
921 Headers are interspersed with the data at PDU intervals. By the time
922 this function is called, the start of the data could possibly have been
923 read by an SMBtrans (file_offset != 0).
925 Calling create_rpc_reply() here is a hack. The data should already
926 have been prepared into arrays of headers + data stream sections.
927 ****************************************************************************/
929 static ssize_t
read_from_internal_pipe(void *np_conn
, char *data
, size_t n
,
930 BOOL
*is_data_outstanding
)
932 pipes_struct
*p
= (pipes_struct
*)np_conn
;
933 uint32 pdu_remaining
= 0;
934 ssize_t data_returned
= 0;
937 DEBUG(0,("read_from_pipe: pipe not open\n"));
941 DEBUG(6,(" name: %s len: %u\n", p
->name
, (unsigned int)n
));
944 * We cannot return more than one PDU length per
949 * This condition should result in the connection being closed.
950 * Netapp filers seem to set it to 0xffff which results in domain
951 * authentications failing. Just ignore it so things work.
954 if(n
> MAX_PDU_FRAG_LEN
) {
955 DEBUG(5,("read_from_pipe: too large read (%u) requested on \
956 pipe %s. We can only service %d sized reads.\n", (unsigned int)n
, p
->name
, MAX_PDU_FRAG_LEN
));
960 * Determine if there is still data to send in the
961 * pipe PDU buffer. Always send this first. Never
962 * send more than is left in the current PDU. The
963 * client should send a new read request for a new
967 if((pdu_remaining
= p
->out_data
.current_pdu_len
- p
->out_data
.current_pdu_sent
) > 0) {
968 data_returned
= (ssize_t
)MIN(n
, pdu_remaining
);
970 DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, current_pdu_sent = %u \
971 returning %d bytes.\n", p
->name
, (unsigned int)p
->out_data
.current_pdu_len
,
972 (unsigned int)p
->out_data
.current_pdu_sent
, (int)data_returned
));
974 memcpy( data
, &p
->out_data
.current_pdu
[p
->out_data
.current_pdu_sent
], (size_t)data_returned
);
975 p
->out_data
.current_pdu_sent
+= (uint32
)data_returned
;
980 * At this point p->current_pdu_len == p->current_pdu_sent (which
981 * may of course be zero if this is the first return fragment.
984 DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length \
985 = %u, prs_offset(&p->out_data.rdata) = %u.\n",
986 p
->name
, (int)p
->fault_state
, (unsigned int)p
->out_data
.data_sent_length
, (unsigned int)prs_offset(&p
->out_data
.rdata
) ));
988 if(p
->out_data
.data_sent_length
>= prs_offset(&p
->out_data
.rdata
)) {
990 * We have sent all possible data, return 0.
997 * We need to create a new PDU from the data left in p->rdata.
998 * Create the header/data/footers. This also sets up the fields
999 * p->current_pdu_len, p->current_pdu_sent, p->data_sent_length
1000 * and stores the outgoing PDU in p->current_pdu.
1003 if(!create_next_pdu(p
)) {
1004 DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n", p
->name
));
1008 data_returned
= MIN(n
, p
->out_data
.current_pdu_len
);
1010 memcpy( data
, p
->out_data
.current_pdu
, (size_t)data_returned
);
1011 p
->out_data
.current_pdu_sent
+= (uint32
)data_returned
;
1015 (*is_data_outstanding
) = p
->out_data
.current_pdu_len
> n
;
1016 return data_returned
;
1019 /****************************************************************************
1020 Wait device state on a pipe. Exactly what this is for is unknown...
1021 ****************************************************************************/
1023 BOOL
wait_rpc_pipe_hnd_state(smb_np_struct
*p
, uint16 priority
)
1029 DEBUG(3,("wait_rpc_pipe_hnd_state: Setting pipe wait state priority=%x on pipe (name=%s)\n",
1030 priority
, p
->name
));
1032 p
->priority
= priority
;
1037 DEBUG(3,("wait_rpc_pipe_hnd_state: Error setting pipe wait state priority=%x (name=%s)\n",
1038 priority
, p
->name
));
1043 /****************************************************************************
1044 Set device state on a pipe. Exactly what this is for is unknown...
1045 ****************************************************************************/
1047 BOOL
set_rpc_pipe_hnd_state(smb_np_struct
*p
, uint16 device_state
)
1053 DEBUG(3,("set_rpc_pipe_hnd_state: Setting pipe device state=%x on pipe (name=%s)\n",
1054 device_state
, p
->name
));
1056 p
->device_state
= device_state
;
1061 DEBUG(3,("set_rpc_pipe_hnd_state: Error setting pipe device state=%x (name=%s)\n",
1062 device_state
, p
->name
));
1067 /****************************************************************************
1069 ****************************************************************************/
1071 BOOL
close_rpc_pipe_hnd(smb_np_struct
*p
)
1074 DEBUG(0,("Invalid pipe in close_rpc_pipe_hnd\n"));
1078 p
->namedpipe_close(p
->np_state
);
1080 bitmap_clear(bmap
, p
->pnum
- pipe_handle_offset
);
1084 DEBUG(4,("closed pipe name %s pnum=%x (pipes_open=%d)\n",
1085 p
->name
, p
->pnum
, pipes_open
));
1087 DLIST_REMOVE(Pipes
, p
);
1096 /****************************************************************************
1098 ****************************************************************************/
1100 static BOOL
close_internal_rpc_pipe_hnd(void *np_conn
)
1102 pipes_struct
*p
= (pipes_struct
*)np_conn
;
1104 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
1108 prs_mem_free(&p
->out_data
.rdata
);
1109 prs_mem_free(&p
->in_data
.data
);
1112 talloc_destroy(p
->mem_ctx
);
1114 free_pipe_rpc_context( p
->contexts
);
1116 /* Free the handles database. */
1117 close_policy_by_pipe(p
);
1119 delete_nt_token(&p
->pipe_user
.nt_user_token
);
1120 SAFE_FREE(p
->pipe_user
.groups
);
1122 DLIST_REMOVE(InternalPipes
, p
);
1124 p
->conn
->num_files_open
--;
1133 /****************************************************************************
1134 Find an rpc pipe given a pipe handle in a buffer and an offset.
1135 ****************************************************************************/
1137 smb_np_struct
*get_rpc_pipe_p(char *buf
, int where
)
1139 int pnum
= SVAL(buf
,where
);
1144 return get_rpc_pipe(pnum
);
1147 /****************************************************************************
1148 Find an rpc pipe given a pipe handle.
1149 ****************************************************************************/
1151 smb_np_struct
*get_rpc_pipe(int pnum
)
1155 DEBUG(4,("search for pipe pnum=%x\n", pnum
));
1157 for (p
=Pipes
;p
;p
=p
->next
)
1158 DEBUG(5,("pipe name %s pnum=%x (pipes_open=%d)\n",
1159 p
->name
, p
->pnum
, pipes_open
));
1161 for (p
=Pipes
;p
;p
=p
->next
) {
1162 if (p
->pnum
== pnum
) {