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_MALLOC_P(smb_np_struct
);
209 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
215 /* add a dso mechanism instead of this, here */
217 p
->namedpipe_create
= make_internal_rpc_pipe_p
;
218 p
->namedpipe_read
= read_from_internal_pipe
;
219 p
->namedpipe_write
= write_to_internal_pipe
;
220 p
->namedpipe_close
= close_internal_rpc_pipe_hnd
;
222 p
->np_state
= p
->namedpipe_create(pipe_name
, conn
, vuid
);
224 if (p
->np_state
== NULL
) {
225 DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n"));
233 * Initialize the incoming RPC data buffer with one PDU worth of memory.
234 * We cheat here and say we're marshalling, as we intend to add incoming
235 * data directly into the prs_struct and we want it to auto grow. We will
236 * change the type to UNMARSALLING before processing the stream.
240 i
+= pipe_handle_offset
;
252 p
->max_trans_reply
= 0;
254 fstrcpy(p
->name
, pipe_name
);
256 DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
257 pipe_name
, i
, pipes_open
));
261 /* Iterate over p_it as a temp variable, to display all open pipes */
262 for (p_it
= Pipes
; p_it
; p_it
= p_it
->next
)
263 DEBUG(5,("open pipes: name %s pnum=%x\n", p_it
->name
, p_it
->pnum
));
268 /****************************************************************************
269 Make an internal namedpipes structure
270 ****************************************************************************/
272 static void *make_internal_rpc_pipe_p(char *pipe_name
,
273 connection_struct
*conn
, uint16 vuid
)
276 user_struct
*vuser
= get_valid_user_struct(vuid
);
278 DEBUG(4,("Create pipe requested %s\n", pipe_name
));
280 if (!vuser
&& vuid
!= UID_FIELD_INVALID
) {
281 DEBUG(0,("ERROR! vuid %d did not map to a valid vuser struct!\n", vuid
));
285 p
= SMB_MALLOC_P(pipes_struct
);
288 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
294 if ((p
->mem_ctx
= talloc_init("pipe %s %p", pipe_name
, p
)) == NULL
) {
295 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
300 if (!init_pipe_handle_list(p
, pipe_name
)) {
301 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
302 talloc_destroy(p
->mem_ctx
);
308 * Initialize the incoming RPC data buffer with one PDU worth of memory.
309 * We cheat here and say we're marshalling, as we intend to add incoming
310 * data directly into the prs_struct and we want it to auto grow. We will
311 * change the type to UNMARSALLING before processing the stream.
314 if(!prs_init(&p
->in_data
.data
, MAX_PDU_FRAG_LEN
, p
->mem_ctx
, MARSHALL
)) {
315 DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
319 DLIST_ADD(InternalPipes
, p
);
323 /* Ensure the connection isn't idled whilst this pipe is open. */
324 p
->conn
->num_files_open
++;
328 p
->ntlmssp_chal_flags
= 0;
329 p
->ntlmssp_auth_validated
= False
;
330 p
->ntlmssp_auth_requested
= False
;
332 p
->pipe_bound
= False
;
333 p
->fault_state
= False
;
334 p
->endian
= RPC_LITTLE_ENDIAN
;
336 ZERO_STRUCT(p
->pipe_user
);
338 p
->pipe_user
.uid
= (uid_t
)-1;
339 p
->pipe_user
.gid
= (gid_t
)-1;
341 /* Store the session key and NT_TOKEN */
343 p
->session_key
= data_blob(vuser
->session_key
.data
, vuser
->session_key
.length
);
344 p
->pipe_user
.nt_user_token
= dup_nt_token(vuser
->nt_user_token
);
348 * Initialize the incoming RPC struct.
351 p
->in_data
.pdu_needed_len
= 0;
352 p
->in_data
.pdu_received_len
= 0;
355 * Initialize the outgoing RPC struct.
358 p
->out_data
.current_pdu_len
= 0;
359 p
->out_data
.current_pdu_sent
= 0;
360 p
->out_data
.data_sent_length
= 0;
363 * Initialize the outgoing RPC data buffer with no memory.
365 prs_init(&p
->out_data
.rdata
, 0, p
->mem_ctx
, MARSHALL
);
367 fstrcpy(p
->name
, pipe_name
);
369 DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
370 pipe_name
, pipes_open
));
375 /****************************************************************************
376 Sets the fault state on incoming packets.
377 ****************************************************************************/
379 static void set_incoming_fault(pipes_struct
*p
)
381 prs_mem_free(&p
->in_data
.data
);
382 p
->in_data
.pdu_needed_len
= 0;
383 p
->in_data
.pdu_received_len
= 0;
384 p
->fault_state
= True
;
385 DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : vuid = 0x%x\n",
389 /****************************************************************************
390 Ensures we have at least RPC_HEADER_LEN amount of data in the incoming buffer.
391 ****************************************************************************/
393 static ssize_t
fill_rpc_header(pipes_struct
*p
, char *data
, size_t data_to_copy
)
395 size_t len_needed_to_complete_hdr
= MIN(data_to_copy
, RPC_HEADER_LEN
- p
->in_data
.pdu_received_len
);
397 DEBUG(10,("fill_rpc_header: data_to_copy = %u, len_needed_to_complete_hdr = %u, receive_len = %u\n",
398 (unsigned int)data_to_copy
, (unsigned int)len_needed_to_complete_hdr
,
399 (unsigned int)p
->in_data
.pdu_received_len
));
401 memcpy((char *)&p
->in_data
.current_in_pdu
[p
->in_data
.pdu_received_len
], data
, len_needed_to_complete_hdr
);
402 p
->in_data
.pdu_received_len
+= len_needed_to_complete_hdr
;
404 return (ssize_t
)len_needed_to_complete_hdr
;
407 /****************************************************************************
408 Unmarshalls a new PDU header. Assumes the raw header data is in current_in_pdu.
409 ****************************************************************************/
411 static ssize_t
unmarshall_rpc_header(pipes_struct
*p
)
414 * Unmarshall the header to determine the needed length.
419 if(p
->in_data
.pdu_received_len
!= RPC_HEADER_LEN
) {
420 DEBUG(0,("unmarshall_rpc_header: assert on rpc header length failed.\n"));
421 set_incoming_fault(p
);
425 prs_init( &rpc_in
, 0, p
->mem_ctx
, UNMARSHALL
);
426 prs_set_endian_data( &rpc_in
, p
->endian
);
428 prs_give_memory( &rpc_in
, (char *)&p
->in_data
.current_in_pdu
[0],
429 p
->in_data
.pdu_received_len
, False
);
432 * Unmarshall the header as this will tell us how much
433 * data we need to read to get the complete pdu.
434 * This also sets the endian flag in rpc_in.
437 if(!smb_io_rpc_hdr("", &p
->hdr
, &rpc_in
, 0)) {
438 DEBUG(0,("unmarshall_rpc_header: failed to unmarshall RPC_HDR.\n"));
439 set_incoming_fault(p
);
440 prs_mem_free(&rpc_in
);
445 * Validate the RPC header.
448 if(p
->hdr
.major
!= 5 && p
->hdr
.minor
!= 0) {
449 DEBUG(0,("unmarshall_rpc_header: invalid major/minor numbers in RPC_HDR.\n"));
450 set_incoming_fault(p
);
451 prs_mem_free(&rpc_in
);
456 * If there's not data in the incoming buffer this should be the start of a new RPC.
459 if(prs_offset(&p
->in_data
.data
) == 0) {
462 * AS/U doesn't set FIRST flag in a BIND packet it seems.
465 if ((p
->hdr
.pkt_type
== RPC_REQUEST
) && !(p
->hdr
.flags
& RPC_FLG_FIRST
)) {
467 * Ensure that the FIRST flag is set. If not then we have
468 * a stream missmatch.
471 DEBUG(0,("unmarshall_rpc_header: FIRST flag not set in first PDU !\n"));
472 set_incoming_fault(p
);
473 prs_mem_free(&rpc_in
);
478 * If this is the first PDU then set the endianness
479 * flag in the pipe. We will need this when parsing all
483 p
->endian
= rpc_in
.bigendian_data
;
485 DEBUG(5,("unmarshall_rpc_header: using %sendian RPC\n",
486 p
->endian
== RPC_LITTLE_ENDIAN
? "little-" : "big-" ));
491 * If this is *NOT* the first PDU then check the endianness
492 * flag in the pipe is the same as that in the PDU.
495 if (p
->endian
!= rpc_in
.bigendian_data
) {
496 DEBUG(0,("unmarshall_rpc_header: FIRST endianness flag (%d) different in next PDU !\n", (int)p
->endian
));
497 set_incoming_fault(p
);
498 prs_mem_free(&rpc_in
);
504 * Ensure that the pdu length is sane.
507 if((p
->hdr
.frag_len
< RPC_HEADER_LEN
) || (p
->hdr
.frag_len
> MAX_PDU_FRAG_LEN
)) {
508 DEBUG(0,("unmarshall_rpc_header: assert on frag length failed.\n"));
509 set_incoming_fault(p
);
510 prs_mem_free(&rpc_in
);
514 DEBUG(10,("unmarshall_rpc_header: type = %u, flags = %u\n", (unsigned int)p
->hdr
.pkt_type
,
515 (unsigned int)p
->hdr
.flags
));
518 * Adjust for the header we just ate.
520 p
->in_data
.pdu_received_len
= 0;
521 p
->in_data
.pdu_needed_len
= (uint32
)p
->hdr
.frag_len
- RPC_HEADER_LEN
;
524 * Null the data we just ate.
527 memset((char *)&p
->in_data
.current_in_pdu
[0], '\0', RPC_HEADER_LEN
);
529 prs_mem_free(&rpc_in
);
531 return 0; /* No extra data processed. */
534 /****************************************************************************
535 Call this to free any talloc'ed memory. Do this before and after processing
537 ****************************************************************************/
539 void free_pipe_context(pipes_struct
*p
)
542 DEBUG(3,("free_pipe_context: destroying talloc pool of size %lu\n", (unsigned long)talloc_pool_size(p
->mem_ctx
) ));
543 talloc_destroy_pool(p
->mem_ctx
);
545 p
->mem_ctx
= talloc_init("pipe %s %p", p
->name
, p
);
546 if (p
->mem_ctx
== NULL
)
547 p
->fault_state
= True
;
551 /****************************************************************************
552 Processes a request pdu. This will do auth processing if needed, and
553 appends the data into the complete stream if the LAST flag is not set.
554 ****************************************************************************/
556 static BOOL
process_request_pdu(pipes_struct
*p
, prs_struct
*rpc_in_p
)
558 BOOL auth_verify
= ((p
->ntlmssp_chal_flags
& NTLMSSP_NEGOTIATE_SIGN
) != 0);
559 size_t data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
560 (auth_verify
? RPC_HDR_AUTH_LEN
: 0) - p
->hdr
.auth_len
;
563 DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
564 set_incoming_fault(p
);
569 * Check if we need to do authentication processing.
570 * This is only done on requests, not binds.
574 * Read the RPC request header.
577 if(!smb_io_rpc_hdr_req("req", &p
->hdr_req
, rpc_in_p
, 0)) {
578 DEBUG(0,("process_request_pdu: failed to unmarshall RPC_HDR_REQ.\n"));
579 set_incoming_fault(p
);
583 if(p
->ntlmssp_auth_validated
&& !api_pipe_auth_process(p
, rpc_in_p
)) {
584 DEBUG(0,("process_request_pdu: failed to do auth processing.\n"));
585 set_incoming_fault(p
);
589 if (p
->ntlmssp_auth_requested
&& !p
->ntlmssp_auth_validated
) {
592 * Authentication _was_ requested and it already failed.
595 DEBUG(0,("process_request_pdu: RPC request received on pipe %s "
596 "where authentication failed. Denying the request.\n",
598 set_incoming_fault(p
);
602 if (p
->netsec_auth_validated
&& !api_pipe_netsec_process(p
, rpc_in_p
)) {
603 DEBUG(3,("process_request_pdu: failed to do schannel processing.\n"));
604 set_incoming_fault(p
);
609 * Check the data length doesn't go over the 15Mb limit.
610 * increased after observing a bug in the Windows NT 4.0 SP6a
611 * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC
612 * will not fit in the initial buffer of size 0x1068 --jerry 22/01/2002
615 if(prs_offset(&p
->in_data
.data
) + data_len
> 15*1024*1024) {
616 DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
617 (unsigned int)prs_data_size(&p
->in_data
.data
), (unsigned int)data_len
));
618 set_incoming_fault(p
);
623 * Append the data portion into the buffer and return.
626 if(!prs_append_some_prs_data(&p
->in_data
.data
, rpc_in_p
, prs_offset(rpc_in_p
), 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
);
633 if(p
->hdr
.flags
& RPC_FLG_LAST
) {
636 * Ok - we finally have a complete RPC stream.
637 * Call the rpc command to process it.
641 * Ensure the internal prs buffer size is *exactly* the same
642 * size as the current offset.
645 if(!prs_set_buffer_size(&p
->in_data
.data
, prs_offset(&p
->in_data
.data
)))
647 DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n"));
648 set_incoming_fault(p
);
653 * Set the parse offset to the start of the data and set the
654 * prs_struct to UNMARSHALL.
657 prs_set_offset(&p
->in_data
.data
, 0);
658 prs_switch_type(&p
->in_data
.data
, UNMARSHALL
);
661 * Process the complete data stream here.
664 free_pipe_context(p
);
666 if(pipe_init_outgoing_data(p
))
667 ret
= api_pipe_request(p
);
669 free_pipe_context(p
);
672 * We have consumed the whole data stream. Set back to
673 * marshalling and set the offset back to the start of
674 * the buffer to re-use it (we could also do a prs_mem_free()
675 * and then re_init on the next start of PDU. Not sure which
676 * is best here.... JRA.
679 prs_switch_type(&p
->in_data
.data
, MARSHALL
);
680 prs_set_offset(&p
->in_data
.data
, 0);
687 /****************************************************************************
688 Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
689 already been parsed and stored in p->hdr.
690 ****************************************************************************/
692 static ssize_t
process_complete_pdu(pipes_struct
*p
)
695 size_t data_len
= p
->in_data
.pdu_received_len
;
696 char *data_p
= (char *)&p
->in_data
.current_in_pdu
[0];
700 DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
702 set_incoming_fault(p
);
703 setup_fault_pdu(p
, NT_STATUS(0x1c010002));
704 return (ssize_t
)data_len
;
707 prs_init( &rpc_in
, 0, p
->mem_ctx
, UNMARSHALL
);
710 * Ensure we're using the corrent endianness for both the
711 * RPC header flags and the raw data we will be reading from.
714 prs_set_endian_data( &rpc_in
, p
->endian
);
715 prs_set_endian_data( &p
->in_data
.data
, p
->endian
);
717 prs_give_memory( &rpc_in
, data_p
, (uint32
)data_len
, False
);
719 DEBUG(10,("process_complete_pdu: processing packet type %u\n",
720 (unsigned int)p
->hdr
.pkt_type
));
722 switch (p
->hdr
.pkt_type
) {
726 * We assume that a pipe bind is only in one pdu.
728 if(pipe_init_outgoing_data(p
))
729 reply
= api_pipe_bind_req(p
, &rpc_in
);
733 * We assume that a pipe bind_resp is only in one pdu.
735 if(pipe_init_outgoing_data(p
))
736 reply
= api_pipe_bind_auth_resp(p
, &rpc_in
);
739 reply
= process_request_pdu(p
, &rpc_in
);
742 DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p
->hdr
.pkt_type
));
746 /* Reset to little endian. Probably don't need this but it won't hurt. */
747 prs_set_endian_data( &p
->in_data
.data
, RPC_LITTLE_ENDIAN
);
750 DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p
->pipe_srv_name
));
751 set_incoming_fault(p
);
752 setup_fault_pdu(p
, NT_STATUS(0x1c010002));
753 prs_mem_free(&rpc_in
);
756 * Reset the lengths. We're ready for a new pdu.
758 p
->in_data
.pdu_needed_len
= 0;
759 p
->in_data
.pdu_received_len
= 0;
762 prs_mem_free(&rpc_in
);
763 return (ssize_t
)data_len
;
766 /****************************************************************************
767 Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
768 ****************************************************************************/
770 static ssize_t
process_incoming_data(pipes_struct
*p
, char *data
, size_t n
)
772 size_t data_to_copy
= MIN(n
, MAX_PDU_FRAG_LEN
- p
->in_data
.pdu_received_len
);
773 size_t old_pdu_received_len
= p
->in_data
.pdu_received_len
;
775 DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n",
776 (unsigned int)p
->in_data
.pdu_received_len
, (unsigned int)p
->in_data
.pdu_needed_len
,
779 if(data_to_copy
== 0) {
781 * This is an error - data is being received and there is no
782 * space in the PDU. Free the received data and go into the fault state.
784 DEBUG(0,("process_incoming_data: No space in incoming pdu buffer. Current size = %u \
785 incoming data size = %u\n", (unsigned int)p
->in_data
.pdu_received_len
, (unsigned int)n
));
786 set_incoming_fault(p
);
791 * If we have no data already, wait until we get at least a RPC_HEADER_LEN
792 * number of bytes before we can do anything.
795 if((p
->in_data
.pdu_needed_len
== 0) && (p
->in_data
.pdu_received_len
< RPC_HEADER_LEN
)) {
797 * Always return here. If we have more data then the RPC_HEADER
798 * will be processed the next time around the loop.
800 return fill_rpc_header(p
, data
, data_to_copy
);
804 * At this point we know we have at least an RPC_HEADER_LEN amount of data
805 * stored in current_in_pdu.
809 * If pdu_needed_len is zero this is a new pdu.
810 * Unmarshall the header so we know how much more
811 * data we need, then loop again.
814 if(p
->in_data
.pdu_needed_len
== 0)
815 return unmarshall_rpc_header(p
);
818 * Ok - at this point we have a valid RPC_HEADER in p->hdr.
819 * Keep reading until we have a full pdu.
822 data_to_copy
= MIN(data_to_copy
, p
->in_data
.pdu_needed_len
);
825 * Copy as much of the data as we need into the current_in_pdu buffer.
828 memcpy( (char *)&p
->in_data
.current_in_pdu
[p
->in_data
.pdu_received_len
], data
, data_to_copy
);
829 p
->in_data
.pdu_received_len
+= data_to_copy
;
832 * Do we have a complete PDU ?
833 * (return the nym of bytes handled in the call)
836 if(p
->in_data
.pdu_received_len
== p
->in_data
.pdu_needed_len
)
837 return process_complete_pdu(p
) - old_pdu_received_len
;
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 /****************************************************************************
1093 Close all pipes on a connection.
1094 ****************************************************************************/
1096 void pipe_close_conn(connection_struct
*conn
)
1098 smb_np_struct
*p
, *next
;
1100 for (p
=Pipes
;p
;p
=next
) {
1102 if (p
->conn
== conn
) {
1103 close_rpc_pipe_hnd(p
);
1108 /****************************************************************************
1110 ****************************************************************************/
1112 static BOOL
close_internal_rpc_pipe_hnd(void *np_conn
)
1114 pipes_struct
*p
= (pipes_struct
*)np_conn
;
1116 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
1120 prs_mem_free(&p
->out_data
.rdata
);
1121 prs_mem_free(&p
->in_data
.data
);
1124 talloc_destroy(p
->mem_ctx
);
1126 free_pipe_rpc_context( p
->contexts
);
1128 /* Free the handles database. */
1129 close_policy_by_pipe(p
);
1131 delete_nt_token(&p
->pipe_user
.nt_user_token
);
1132 data_blob_free(&p
->session_key
);
1133 SAFE_FREE(p
->pipe_user
.groups
);
1135 DLIST_REMOVE(InternalPipes
, p
);
1137 p
->conn
->num_files_open
--;
1146 /****************************************************************************
1147 Find an rpc pipe given a pipe handle in a buffer and an offset.
1148 ****************************************************************************/
1150 smb_np_struct
*get_rpc_pipe_p(char *buf
, int where
)
1152 int pnum
= SVAL(buf
,where
);
1157 return get_rpc_pipe(pnum
);
1160 /****************************************************************************
1161 Find an rpc pipe given a pipe handle.
1162 ****************************************************************************/
1164 smb_np_struct
*get_rpc_pipe(int pnum
)
1168 DEBUG(4,("search for pipe pnum=%x\n", pnum
));
1170 for (p
=Pipes
;p
;p
=p
->next
)
1171 DEBUG(5,("pipe name %s pnum=%x (pipes_open=%d)\n",
1172 p
->name
, p
->pnum
, pipes_open
));
1174 for (p
=Pipes
;p
;p
=p
->next
) {
1175 if (p
->pnum
== pnum
) {