2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1998,
5 * Largely re-written : 2005
6 * Copyright (C) Jeremy Allison 1998 - 2005
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 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. :-) */
116 /****************************************************************************
117 Reset pipe chain handle number.
118 ****************************************************************************/
120 void reset_chain_p(void)
125 /****************************************************************************
126 Initialise pipe handle states.
127 ****************************************************************************/
129 void init_rpc_pipe_hnd(void)
131 bmap = bitmap_allocate(MAX_OPEN_PIPES);
133 exit_server("out of memory in init_rpc_pipe_hnd");
137 /****************************************************************************
138 Initialise an outgoing packet.
139 ****************************************************************************/
141 static BOOL pipe_init_outgoing_data(pipes_struct *p)
143 output_data *o_data = &p->out_data;
145 /* Reset the offset counters. */
146 o_data->data_sent_length = 0;
147 o_data->current_pdu_len = 0;
148 o_data->current_pdu_sent = 0;
150 memset(o_data->current_pdu, '\0', sizeof(o_data->current_pdu));
152 /* Free any memory in the current return data buffer. */
153 prs_mem_free(&o_data->rdata);
156 * Initialize the outgoing RPC data buffer.
157 * we will use this as the raw data area for replying to rpc requests.
159 if(!prs_init(&o_data->rdata, RPC_MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
160 DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
167 /****************************************************************************
168 Find first available pipe slot.
169 ****************************************************************************/
171 smb_np_struct *open_rpc_pipe_p(char *pipe_name,
172 connection_struct *conn, uint16 vuid)
175 smb_np_struct *p, *p_it;
176 static int next_pipe;
177 BOOL is_spoolss_pipe = False;
179 DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n",
180 pipe_name, pipes_open));
182 if (strstr(pipe_name, "spoolss")) {
183 is_spoolss_pipe = True;
186 if (is_spoolss_pipe && current_spoolss_pipes_open >= MAX_OPEN_SPOOLSS_PIPES) {
187 DEBUG(10,("open_rpc_pipe_p: spooler bug workaround. Denying open on pipe %s\n",
192 /* not repeating pipe numbers makes it easier to track things in
193 log files and prevents client bugs where pipe numbers are reused
194 over connection restarts */
196 if (next_pipe == 0) {
197 next_pipe = (sys_getpid() ^ time(NULL)) % MAX_OPEN_PIPES;
200 i = bitmap_find(bmap, next_pipe);
203 DEBUG(0,("ERROR! Out of pipe structures\n"));
207 next_pipe = (i+1) % MAX_OPEN_PIPES;
209 for (p = Pipes; p; p = p->next) {
210 DEBUG(5,("open_rpc_pipe_p: name %s pnum=%x\n", p->name, p->pnum));
213 p = SMB_MALLOC_P(smb_np_struct);
215 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
221 /* add a dso mechanism instead of this, here */
223 p->namedpipe_create = make_internal_rpc_pipe_p;
224 p->namedpipe_read = read_from_internal_pipe;
225 p->namedpipe_write = write_to_internal_pipe;
226 p->namedpipe_close = close_internal_rpc_pipe_hnd;
228 p->np_state = p->namedpipe_create(pipe_name, conn, vuid);
230 if (p->np_state == NULL) {
231 DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n"));
239 * Initialize the incoming RPC data buffer with one PDU worth of memory.
240 * We cheat here and say we're marshalling, as we intend to add incoming
241 * data directly into the prs_struct and we want it to auto grow. We will
242 * change the type to UNMARSALLING before processing the stream.
246 i += pipe_handle_offset;
258 p->max_trans_reply = 0;
260 fstrcpy(p->name, pipe_name);
262 DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
263 pipe_name, i, pipes_open));
267 /* Iterate over p_it as a temp variable, to display all open pipes */
268 for (p_it = Pipes; p_it; p_it = p_it->next) {
269 DEBUG(5,("open pipes: name %s pnum=%x\n", p_it->name, p_it->pnum));
275 /****************************************************************************
276 Make an internal namedpipes structure
277 ****************************************************************************/
279 static void *make_internal_rpc_pipe_p(char *pipe_name,
280 connection_struct *conn, uint16 vuid)
283 user_struct *vuser = get_valid_user_struct(vuid);
285 DEBUG(4,("Create pipe requested %s\n", pipe_name));
287 if (!vuser && vuid != UID_FIELD_INVALID) {
288 DEBUG(0,("ERROR! vuid %d did not map to a valid vuser struct!\n", vuid));
292 p = SMB_MALLOC_P(pipes_struct);
295 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
301 if ((p->mem_ctx = talloc_init("pipe %s %p", pipe_name, p)) == NULL) {
302 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
307 if ((p->pipe_state_mem_ctx = talloc_init("pipe_state %s %p", pipe_name, p)) == NULL) {
308 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
309 talloc_destroy(p->mem_ctx);
314 if (!init_pipe_handle_list(p, pipe_name)) {
315 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
316 talloc_destroy(p->mem_ctx);
317 talloc_destroy(p->pipe_state_mem_ctx);
323 * Initialize the incoming RPC data buffer with one PDU worth of memory.
324 * We cheat here and say we're marshalling, as we intend to add incoming
325 * data directly into the prs_struct and we want it to auto grow. We will
326 * change the type to UNMARSALLING before processing the stream.
329 if(!prs_init(&p->in_data.data, RPC_MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
330 DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
331 talloc_destroy(p->mem_ctx);
332 talloc_destroy(p->pipe_state_mem_ctx);
336 DLIST_ADD(InternalPipes, p);
342 p->endian = RPC_LITTLE_ENDIAN;
344 ZERO_STRUCT(p->pipe_user);
346 p->pipe_user.ut.uid = (uid_t)-1;
347 p->pipe_user.ut.gid = (gid_t)-1;
349 /* Store the session key and NT_TOKEN */
351 p->session_key = data_blob(vuser->session_key.data, vuser->session_key.length);
352 p->pipe_user.nt_user_token = dup_nt_token(
353 NULL, vuser->nt_user_token);
357 * Initialize the outgoing RPC data buffer with no memory.
359 prs_init(&p->out_data.rdata, 0, p->mem_ctx, MARSHALL);
361 fstrcpy(p->name, pipe_name);
363 DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
364 pipe_name, pipes_open));
369 /****************************************************************************
370 Sets the fault state on incoming packets.
371 ****************************************************************************/
373 static void set_incoming_fault(pipes_struct *p)
375 prs_mem_free(&p->in_data.data);
376 p->in_data.pdu_needed_len = 0;
377 p->in_data.pdu_received_len = 0;
378 p->fault_state = True;
379 DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : vuid = 0x%x\n",
383 /****************************************************************************
384 Ensures we have at least RPC_HEADER_LEN amount of data in the incoming buffer.
385 ****************************************************************************/
387 static ssize_t fill_rpc_header(pipes_struct *p, char *data, size_t data_to_copy)
389 size_t len_needed_to_complete_hdr = MIN(data_to_copy, RPC_HEADER_LEN - p->in_data.pdu_received_len);
391 DEBUG(10,("fill_rpc_header: data_to_copy = %u, len_needed_to_complete_hdr = %u, receive_len = %u\n",
392 (unsigned int)data_to_copy, (unsigned int)len_needed_to_complete_hdr,
393 (unsigned int)p->in_data.pdu_received_len ));
395 memcpy((char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, len_needed_to_complete_hdr);
396 p->in_data.pdu_received_len += len_needed_to_complete_hdr;
398 return (ssize_t)len_needed_to_complete_hdr;
401 /****************************************************************************
402 Unmarshalls a new PDU header. Assumes the raw header data is in current_in_pdu.
403 ****************************************************************************/
405 static ssize_t unmarshall_rpc_header(pipes_struct *p)
408 * Unmarshall the header to determine the needed length.
413 if(p->in_data.pdu_received_len != RPC_HEADER_LEN) {
414 DEBUG(0,("unmarshall_rpc_header: assert on rpc header length failed.\n"));
415 set_incoming_fault(p);
419 prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL);
420 prs_set_endian_data( &rpc_in, p->endian);
422 prs_give_memory( &rpc_in, (char *)&p->in_data.current_in_pdu[0],
423 p->in_data.pdu_received_len, False);
426 * Unmarshall the header as this will tell us how much
427 * data we need to read to get the complete pdu.
428 * This also sets the endian flag in rpc_in.
431 if(!smb_io_rpc_hdr("", &p->hdr, &rpc_in, 0)) {
432 DEBUG(0,("unmarshall_rpc_header: failed to unmarshall RPC_HDR.\n"));
433 set_incoming_fault(p);
434 prs_mem_free(&rpc_in);
439 * Validate the RPC header.
442 if(p->hdr.major != 5 && p->hdr.minor != 0) {
443 DEBUG(0,("unmarshall_rpc_header: invalid major/minor numbers in RPC_HDR.\n"));
444 set_incoming_fault(p);
445 prs_mem_free(&rpc_in);
450 * If there's not data in the incoming buffer this should be the start of a new RPC.
453 if(prs_offset(&p->in_data.data) == 0) {
456 * AS/U doesn't set FIRST flag in a BIND packet it seems.
459 if ((p->hdr.pkt_type == RPC_REQUEST) && !(p->hdr.flags & RPC_FLG_FIRST)) {
461 * Ensure that the FIRST flag is set. If not then we have
462 * a stream missmatch.
465 DEBUG(0,("unmarshall_rpc_header: FIRST flag not set in first PDU !\n"));
466 set_incoming_fault(p);
467 prs_mem_free(&rpc_in);
472 * If this is the first PDU then set the endianness
473 * flag in the pipe. We will need this when parsing all
477 p->endian = rpc_in.bigendian_data;
479 DEBUG(5,("unmarshall_rpc_header: using %sendian RPC\n",
480 p->endian == RPC_LITTLE_ENDIAN ? "little-" : "big-" ));
485 * If this is *NOT* the first PDU then check the endianness
486 * flag in the pipe is the same as that in the PDU.
489 if (p->endian != rpc_in.bigendian_data) {
490 DEBUG(0,("unmarshall_rpc_header: FIRST endianness flag (%d) different in next PDU !\n", (int)p->endian));
491 set_incoming_fault(p);
492 prs_mem_free(&rpc_in);
498 * Ensure that the pdu length is sane.
501 if((p->hdr.frag_len < RPC_HEADER_LEN) || (p->hdr.frag_len > RPC_MAX_PDU_FRAG_LEN)) {
502 DEBUG(0,("unmarshall_rpc_header: assert on frag length failed.\n"));
503 set_incoming_fault(p);
504 prs_mem_free(&rpc_in);
508 DEBUG(10,("unmarshall_rpc_header: type = %u, flags = %u\n", (unsigned int)p->hdr.pkt_type,
509 (unsigned int)p->hdr.flags ));
511 p->in_data.pdu_needed_len = (uint32)p->hdr.frag_len - RPC_HEADER_LEN;
513 prs_mem_free(&rpc_in);
515 return 0; /* No extra data processed. */
518 /****************************************************************************
519 Call this to free any talloc'ed memory. Do this before and after processing
521 ****************************************************************************/
523 static void free_pipe_context(pipes_struct *p)
526 DEBUG(3,("free_pipe_context: destroying talloc pool of size "
527 "%lu\n", (unsigned long)talloc_total_size(p->mem_ctx) ));
528 talloc_free_children(p->mem_ctx);
530 p->mem_ctx = talloc_init("pipe %s %p", p->name, p);
531 if (p->mem_ctx == NULL) {
532 p->fault_state = True;
537 /****************************************************************************
538 Processes a request pdu. This will do auth processing if needed, and
539 appends the data into the complete stream if the LAST flag is not set.
540 ****************************************************************************/
542 static BOOL process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p)
544 uint32 ss_padding_len = 0;
545 size_t data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
546 (p->hdr.auth_len ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len;
549 DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
550 set_incoming_fault(p);
555 * Check if we need to do authentication processing.
556 * This is only done on requests, not binds.
560 * Read the RPC request header.
563 if(!smb_io_rpc_hdr_req("req", &p->hdr_req, rpc_in_p, 0)) {
564 DEBUG(0,("process_request_pdu: failed to unmarshall RPC_HDR_REQ.\n"));
565 set_incoming_fault(p);
569 switch(p->auth.auth_type) {
570 case PIPE_AUTH_TYPE_NONE:
573 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
574 case PIPE_AUTH_TYPE_NTLMSSP:
577 if(!api_pipe_ntlmssp_auth_process(p, rpc_in_p, &ss_padding_len, &status)) {
578 DEBUG(0,("process_request_pdu: failed to do auth processing.\n"));
579 DEBUG(0,("process_request_pdu: error was %s.\n", nt_errstr(status) ));
580 set_incoming_fault(p);
586 case PIPE_AUTH_TYPE_SCHANNEL:
587 if (!api_pipe_schannel_process(p, rpc_in_p, &ss_padding_len)) {
588 DEBUG(3,("process_request_pdu: failed to do schannel processing.\n"));
589 set_incoming_fault(p);
595 DEBUG(0,("process_request_pdu: unknown auth type %u set.\n", (unsigned int)p->auth.auth_type ));
596 set_incoming_fault(p);
600 /* Now we've done the sign/seal we can remove any padding data. */
601 if (data_len > ss_padding_len) {
602 data_len -= ss_padding_len;
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.
623 if(!prs_append_some_prs_data(&p->in_data.data, rpc_in_p, prs_offset(rpc_in_p), data_len)) {
624 DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
625 (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) ));
626 set_incoming_fault(p);
630 if(p->hdr.flags & RPC_FLG_LAST) {
633 * Ok - we finally have a complete RPC stream.
634 * Call the rpc command to process it.
638 * Ensure the internal prs buffer size is *exactly* the same
639 * size as the current offset.
642 if(!prs_set_buffer_size(&p->in_data.data, prs_offset(&p->in_data.data))) {
643 DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n"));
644 set_incoming_fault(p);
649 * Set the parse offset to the start of the data and set the
650 * prs_struct to UNMARSHALL.
653 prs_set_offset(&p->in_data.data, 0);
654 prs_switch_type(&p->in_data.data, UNMARSHALL);
657 * Process the complete data stream here.
660 free_pipe_context(p);
662 if(pipe_init_outgoing_data(p)) {
663 ret = api_pipe_request(p);
666 free_pipe_context(p);
669 * We have consumed the whole data stream. Set back to
670 * marshalling and set the offset back to the start of
671 * the buffer to re-use it (we could also do a prs_mem_free()
672 * and then re_init on the next start of PDU. Not sure which
673 * is best here.... JRA.
676 prs_switch_type(&p->in_data.data, MARSHALL);
677 prs_set_offset(&p->in_data.data, 0);
684 /****************************************************************************
685 Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
686 already been parsed and stored in p->hdr.
687 ****************************************************************************/
689 static void process_complete_pdu(pipes_struct *p)
692 size_t data_len = p->in_data.pdu_received_len - RPC_HEADER_LEN;
693 char *data_p = (char *)&p->in_data.current_in_pdu[RPC_HEADER_LEN];
697 DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
699 set_incoming_fault(p);
700 setup_fault_pdu(p, NT_STATUS(0x1c010002));
704 prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL);
707 * Ensure we're using the corrent endianness for both the
708 * RPC header flags and the raw data we will be reading from.
711 prs_set_endian_data( &rpc_in, p->endian);
712 prs_set_endian_data( &p->in_data.data, p->endian);
714 prs_give_memory( &rpc_in, data_p, (uint32)data_len, False);
716 DEBUG(10,("process_complete_pdu: processing packet type %u\n",
717 (unsigned int)p->hdr.pkt_type ));
719 switch (p->hdr.pkt_type) {
721 reply = process_request_pdu(p, &rpc_in);
724 case RPC_PING: /* CL request - ignore... */
725 DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
726 (unsigned int)p->hdr.pkt_type, p->name));
729 case RPC_RESPONSE: /* No responses here. */
730 DEBUG(0,("process_complete_pdu: Error. RPC_RESPONSE received from client on pipe %s.\n",
735 case RPC_WORKING: /* CL request - reply to a ping when a call in process. */
736 case RPC_NOCALL: /* CL - server reply to a ping call. */
742 DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
743 (unsigned int)p->hdr.pkt_type, p->name));
748 * We assume that a pipe bind is only in one pdu.
750 if(pipe_init_outgoing_data(p)) {
751 reply = api_pipe_bind_req(p, &rpc_in);
757 DEBUG(0,("process_complete_pdu: Error. RPC_BINDACK/RPC_BINDNACK packet type %u received on pipe %s.\n",
758 (unsigned int)p->hdr.pkt_type, p->name));
764 * We assume that a pipe bind is only in one pdu.
766 if(pipe_init_outgoing_data(p)) {
767 reply = api_pipe_alter_context(p, &rpc_in);
771 case RPC_ALTCONTRESP:
772 DEBUG(0,("process_complete_pdu: Error. RPC_ALTCONTRESP on pipe %s: Should only be server -> client.\n",
778 * The third packet in an NTLMSSP auth exchange.
780 if(pipe_init_outgoing_data(p)) {
781 reply = api_pipe_bind_auth3(p, &rpc_in);
786 DEBUG(0,("process_complete_pdu: Error. RPC_SHUTDOWN on pipe %s: Should only be server -> client.\n",
791 /* For now just free all client data and continue processing. */
792 DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n"));
793 /* As we never do asynchronous RPC serving, we can never cancel a
794 call (as far as I know). If we ever did we'd have to send a cancel_ack
795 reply. For now, just free all client data and continue processing. */
799 /* Enable this if we're doing async rpc. */
800 /* We must check the call-id matches the outstanding callid. */
801 if(pipe_init_outgoing_data(p)) {
802 /* Send a cancel_ack PDU reply. */
803 /* We should probably check the auth-verifier here. */
804 reply = setup_cancel_ack_reply(p, &rpc_in);
810 /* We should probably check the auth-verifier here.
811 For now just free all client data and continue processing. */
812 DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n"));
817 DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p->hdr.pkt_type ));
821 /* Reset to little endian. Probably don't need this but it won't hurt. */
822 prs_set_endian_data( &p->in_data.data, RPC_LITTLE_ENDIAN);
825 DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p->pipe_srv_name));
826 set_incoming_fault(p);
827 setup_fault_pdu(p, NT_STATUS(0x1c010002));
828 prs_mem_free(&rpc_in);
831 * Reset the lengths. We're ready for a new pdu.
833 p->in_data.pdu_needed_len = 0;
834 p->in_data.pdu_received_len = 0;
837 prs_mem_free(&rpc_in);
840 /****************************************************************************
841 Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
842 ****************************************************************************/
844 static ssize_t process_incoming_data(pipes_struct *p, char *data, size_t n)
846 size_t data_to_copy = MIN(n, RPC_MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len);
848 DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n",
849 (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len,
852 if(data_to_copy == 0) {
854 * This is an error - data is being received and there is no
855 * space in the PDU. Free the received data and go into the fault state.
857 DEBUG(0,("process_incoming_data: No space in incoming pdu buffer. Current size = %u \
858 incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned int)n ));
859 set_incoming_fault(p);
864 * If we have no data already, wait until we get at least a RPC_HEADER_LEN
865 * number of bytes before we can do anything.
868 if((p->in_data.pdu_needed_len == 0) && (p->in_data.pdu_received_len < RPC_HEADER_LEN)) {
870 * Always return here. If we have more data then the RPC_HEADER
871 * will be processed the next time around the loop.
873 return fill_rpc_header(p, data, data_to_copy);
877 * At this point we know we have at least an RPC_HEADER_LEN amount of data
878 * stored in current_in_pdu.
882 * If pdu_needed_len is zero this is a new pdu.
883 * Unmarshall the header so we know how much more
884 * data we need, then loop again.
887 if(p->in_data.pdu_needed_len == 0) {
888 ssize_t rret = unmarshall_rpc_header(p);
889 if (rret == -1 || p->in_data.pdu_needed_len > 0) {
892 /* If rret == 0 and pdu_needed_len == 0 here we have a PDU that consists
893 of an RPC_HEADER only. This is a RPC_SHUTDOWN, RPC_CO_CANCEL or RPC_ORPHANED
894 pdu type. Deal with this in process_complete_pdu(). */
898 * Ok - at this point we have a valid RPC_HEADER in p->hdr.
899 * Keep reading until we have a full pdu.
902 data_to_copy = MIN(data_to_copy, p->in_data.pdu_needed_len);
905 * Copy as much of the data as we need into the current_in_pdu buffer.
906 * pdu_needed_len becomes zero when we have a complete pdu.
909 memcpy( (char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, data_to_copy);
910 p->in_data.pdu_received_len += data_to_copy;
911 p->in_data.pdu_needed_len -= data_to_copy;
914 * Do we have a complete PDU ?
915 * (return the number of bytes handled in the call)
918 if(p->in_data.pdu_needed_len == 0) {
919 process_complete_pdu(p);
923 DEBUG(10,("process_incoming_data: not a complete PDU yet. pdu_received_len = %u, pdu_needed_len = %u\n",
924 (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len ));
926 return (ssize_t)data_to_copy;
929 /****************************************************************************
930 Accepts incoming data on an rpc pipe.
931 ****************************************************************************/
933 ssize_t write_to_pipe(smb_np_struct *p, char *data, size_t n)
935 DEBUG(6,("write_to_pipe: %x", p->pnum));
937 DEBUG(6,(" name: %s open: %s len: %d\n",
938 p->name, BOOLSTR(p->open), (int)n));
940 dump_data(50, data, n);
942 return p->namedpipe_write(p->np_state, data, n);
945 /****************************************************************************
946 Accepts incoming data on an internal rpc pipe.
947 ****************************************************************************/
949 static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n)
951 pipes_struct *p = (pipes_struct*)np_conn;
952 size_t data_left = n;
957 DEBUG(10,("write_to_pipe: data_left = %u\n", (unsigned int)data_left ));
959 data_used = process_incoming_data(p, data, data_left);
961 DEBUG(10,("write_to_pipe: data_used = %d\n", (int)data_used ));
967 data_left -= data_used;
974 /****************************************************************************
975 Replies to a request to read data from a pipe.
977 Headers are interspersed with the data at PDU intervals. By the time
978 this function is called, the start of the data could possibly have been
979 read by an SMBtrans (file_offset != 0).
981 Calling create_rpc_reply() here is a hack. The data should already
982 have been prepared into arrays of headers + data stream sections.
983 ****************************************************************************/
985 ssize_t read_from_pipe(smb_np_struct *p, char *data, size_t n,
986 BOOL *is_data_outstanding)
988 if (!p || !p->open) {
989 DEBUG(0,("read_from_pipe: pipe not open\n"));
993 DEBUG(6,("read_from_pipe: %x", p->pnum));
995 return p->namedpipe_read(p->np_state, data, n, is_data_outstanding);
998 /****************************************************************************
999 Replies to a request to read data from a pipe.
1001 Headers are interspersed with the data at PDU intervals. By the time
1002 this function is called, the start of the data could possibly have been
1003 read by an SMBtrans (file_offset != 0).
1005 Calling create_rpc_reply() here is a hack. The data should already
1006 have been prepared into arrays of headers + data stream sections.
1007 ****************************************************************************/
1009 static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
1010 BOOL *is_data_outstanding)
1012 pipes_struct *p = (pipes_struct*)np_conn;
1013 uint32 pdu_remaining = 0;
1014 ssize_t data_returned = 0;
1017 DEBUG(0,("read_from_pipe: pipe not open\n"));
1021 DEBUG(6,(" name: %s len: %u\n", p->name, (unsigned int)n));
1024 * We cannot return more than one PDU length per
1029 * This condition should result in the connection being closed.
1030 * Netapp filers seem to set it to 0xffff which results in domain
1031 * authentications failing. Just ignore it so things work.
1034 if(n > RPC_MAX_PDU_FRAG_LEN) {
1035 DEBUG(5,("read_from_pipe: too large read (%u) requested on \
1036 pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, RPC_MAX_PDU_FRAG_LEN ));
1040 * Determine if there is still data to send in the
1041 * pipe PDU buffer. Always send this first. Never
1042 * send more than is left in the current PDU. The
1043 * client should send a new read request for a new
1047 if((pdu_remaining = p->out_data.current_pdu_len - p->out_data.current_pdu_sent) > 0) {
1048 data_returned = (ssize_t)MIN(n, pdu_remaining);
1050 DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, current_pdu_sent = %u \
1051 returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len,
1052 (unsigned int)p->out_data.current_pdu_sent, (int)data_returned));
1054 memcpy( data, &p->out_data.current_pdu[p->out_data.current_pdu_sent], (size_t)data_returned);
1055 p->out_data.current_pdu_sent += (uint32)data_returned;
1060 * At this point p->current_pdu_len == p->current_pdu_sent (which
1061 * may of course be zero if this is the first return fragment.
1064 DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length \
1065 = %u, prs_offset(&p->out_data.rdata) = %u.\n",
1066 p->name, (int)p->fault_state, (unsigned int)p->out_data.data_sent_length, (unsigned int)prs_offset(&p->out_data.rdata) ));
1068 if(p->out_data.data_sent_length >= prs_offset(&p->out_data.rdata)) {
1070 * We have sent all possible data, return 0.
1077 * We need to create a new PDU from the data left in p->rdata.
1078 * Create the header/data/footers. This also sets up the fields
1079 * p->current_pdu_len, p->current_pdu_sent, p->data_sent_length
1080 * and stores the outgoing PDU in p->current_pdu.
1083 if(!create_next_pdu(p)) {
1084 DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n", p->name));
1088 data_returned = MIN(n, p->out_data.current_pdu_len);
1090 memcpy( data, p->out_data.current_pdu, (size_t)data_returned);
1091 p->out_data.current_pdu_sent += (uint32)data_returned;
1095 (*is_data_outstanding) = p->out_data.current_pdu_len > n;
1096 return data_returned;
1099 /****************************************************************************
1100 Wait device state on a pipe. Exactly what this is for is unknown...
1101 ****************************************************************************/
1103 BOOL wait_rpc_pipe_hnd_state(smb_np_struct *p, uint16 priority)
1110 DEBUG(3,("wait_rpc_pipe_hnd_state: Setting pipe wait state priority=%x on pipe (name=%s)\n",
1111 priority, p->name));
1113 p->priority = priority;
1118 DEBUG(3,("wait_rpc_pipe_hnd_state: Error setting pipe wait state priority=%x (name=%s)\n",
1119 priority, p->name));
1124 /****************************************************************************
1125 Set device state on a pipe. Exactly what this is for is unknown...
1126 ****************************************************************************/
1128 BOOL set_rpc_pipe_hnd_state(smb_np_struct *p, uint16 device_state)
1135 DEBUG(3,("set_rpc_pipe_hnd_state: Setting pipe device state=%x on pipe (name=%s)\n",
1136 device_state, p->name));
1138 p->device_state = device_state;
1143 DEBUG(3,("set_rpc_pipe_hnd_state: Error setting pipe device state=%x (name=%s)\n",
1144 device_state, p->name));
1149 /****************************************************************************
1151 ****************************************************************************/
1153 BOOL close_rpc_pipe_hnd(smb_np_struct *p)
1156 DEBUG(0,("Invalid pipe in close_rpc_pipe_hnd\n"));
1160 p->namedpipe_close(p->np_state);
1162 bitmap_clear(bmap, p->pnum - pipe_handle_offset);
1166 DEBUG(4,("closed pipe name %s pnum=%x (pipes_open=%d)\n",
1167 p->name, p->pnum, pipes_open));
1169 DLIST_REMOVE(Pipes, p);
1178 /****************************************************************************
1179 Close all pipes on a connection.
1180 ****************************************************************************/
1182 void pipe_close_conn(connection_struct *conn)
1184 smb_np_struct *p, *next;
1186 for (p=Pipes;p;p=next) {
1188 if (p->conn == conn) {
1189 close_rpc_pipe_hnd(p);
1194 /****************************************************************************
1196 ****************************************************************************/
1198 static BOOL close_internal_rpc_pipe_hnd(void *np_conn)
1200 pipes_struct *p = (pipes_struct *)np_conn;
1202 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
1206 prs_mem_free(&p->out_data.rdata);
1207 prs_mem_free(&p->in_data.data);
1209 if (p->auth.auth_data_free_func) {
1210 (*p->auth.auth_data_free_func)(&p->auth);
1214 talloc_destroy(p->mem_ctx);
1217 if (p->pipe_state_mem_ctx) {
1218 talloc_destroy(p->pipe_state_mem_ctx);
1221 free_pipe_rpc_context( p->contexts );
1223 /* Free the handles database. */
1224 close_policy_by_pipe(p);
1226 TALLOC_FREE(p->pipe_user.nt_user_token);
1227 data_blob_free(&p->session_key);
1228 SAFE_FREE(p->pipe_user.ut.groups);
1230 DLIST_REMOVE(InternalPipes, p);
1239 /****************************************************************************
1240 Find an rpc pipe given a pipe handle in a buffer and an offset.
1241 ****************************************************************************/
1243 smb_np_struct *get_rpc_pipe_p(char *buf, int where)
1245 int pnum = SVAL(buf,where);
1251 return get_rpc_pipe(pnum);
1254 /****************************************************************************
1255 Find an rpc pipe given a pipe handle.
1256 ****************************************************************************/
1258 smb_np_struct *get_rpc_pipe(int pnum)
1262 DEBUG(4,("search for pipe pnum=%x\n", pnum));
1264 for (p=Pipes;p;p=p->next) {
1265 DEBUG(5,("pipe name %s pnum=%x (pipes_open=%d)\n",
1266 p->name, p->pnum, pipes_open));
1269 for (p=Pipes;p;p=p->next) {
1270 if (p->pnum == pnum) {