This commit was generated by cvs2svn to compensate for changes in r30,

which included commits to RCS files with non-trunk default branches.
(This used to be commit 3a69cffb062d4f1238b8cae10481c1f2ea4d3d8b)

1 files changed, 1156 insertions, 0 deletions

diff --git a/source4/rpc_server/srv_pipe_hnd.c b/source4/rpc_server/srv_pipe_hnd.c
new file mode 100644
index 0000000000..602a7ed0ab
--- /dev/null
+++ b/source4/rpc_server/srv_pipe_hnd.c
@@ -0,0 +1,1156 @@
+/* 
+ *  Unix SMB/CIFS implementation.
+ *  RPC Pipe client / server routines
+ *  Copyright (C) Andrew Tridgell              1992-1998,
+ *  Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
+ *  Copyright (C) Jeremy Allison				    1999.
+ *  
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
+
+#define	PIPE		"\\PIPE\\"
+#define	PIPELEN		strlen(PIPE)
+
+static smb_np_struct *chain_p;
+static int pipes_open;
+
+/*
+ * Sometimes I can't decide if I hate Windows printer driver
+ * writers more than I hate the Windows spooler service driver
+ * writers. This gets around a combination of bugs in the spooler
+ * and the HP 8500 PCL driver that causes a spooler spin. JRA.
+ *
+ * bumped up from 20 -> 64 after viewing traffic from WordPerfect
+ * 2002 running on NT 4.- SP6
+ * bumped up from 64 -> 256 after viewing traffic from con2prt
+ * for lots of printers on a WinNT 4.x SP6 box.
+ */
+ 
+#ifndef MAX_OPEN_SPOOLSS_PIPES
+#define MAX_OPEN_SPOOLSS_PIPES 256
+#endif
+static int current_spoolss_pipes_open;
+
+static smb_np_struct *Pipes;
+static pipes_struct *InternalPipes;
+static struct bitmap *bmap;
+
+/* TODO
+ * the following prototypes are declared here to avoid
+ * code being moved about too much for a patch to be
+ * disrupted / less obvious.
+ *
+ * these functions, and associated functions that they
+ * call, should be moved behind a .so module-loading
+ * system _anyway_.  so that's the next step...
+ */
+
+static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
+		BOOL *is_data_outstanding);
+static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n);
+static BOOL close_internal_rpc_pipe_hnd(void *np_conn);
+static void *make_internal_rpc_pipe_p(char *pipe_name, 
+			      struct tcon_context *conn, uint16 vuid);
+
+/****************************************************************************
+ Pipe iterator functions.
+****************************************************************************/
+
+smb_np_struct *get_first_pipe(void)
+{
+	return Pipes;
+}
+
+smb_np_struct *get_next_pipe(smb_np_struct *p)
+{
+	return p->next;
+}
+
+/****************************************************************************
+ Internal Pipe iterator functions.
+****************************************************************************/
+
+pipes_struct *get_first_internal_pipe(void)
+{
+	return InternalPipes;
+}
+
+pipes_struct *get_next_internal_pipe(pipes_struct *p)
+{
+	return p->next;
+}
+
+/* this must be larger than the sum of the open files and directories */
+static int pipe_handle_offset;
+
+/****************************************************************************
+ Set the pipe_handle_offset. Called from smbd/files.c
+****************************************************************************/
+
+void set_pipe_handle_offset(int max_open_files)
+{
+  if(max_open_files < 0x7000)
+    pipe_handle_offset = 0x7000;
+  else
+    pipe_handle_offset = max_open_files + 10; /* For safety. :-) */
+}
+
+/****************************************************************************
+ Reset pipe chain handle number.
+****************************************************************************/
+
+void reset_chain_p(void)
+{
+	chain_p = NULL;
+}
+
+/****************************************************************************
+ Initialise pipe handle states.
+****************************************************************************/
+
+void init_rpc_pipe_hnd(void)
+{
+	bmap = bitmap_allocate(MAX_OPEN_PIPES);
+	if (!bmap)
+		exit_server("out of memory in init_rpc_pipe_hnd");
+}
+
+/****************************************************************************
+ Initialise an outgoing packet.
+****************************************************************************/
+
+static BOOL pipe_init_outgoing_data(pipes_struct *p)
+{
+	output_data *o_data = &p->out_data;
+
+	/* Reset the offset counters. */
+	o_data->data_sent_length = 0;
+	o_data->current_pdu_len = 0;
+	o_data->current_pdu_sent = 0;
+
+	memset(o_data->current_pdu, '\0', sizeof(o_data->current_pdu));
+
+	/* Free any memory in the current return data buffer. */
+	prs_mem_free(&o_data->rdata);
+
+	/*
+	 * Initialize the outgoing RPC data buffer.
+	 * we will use this as the raw data area for replying to rpc requests.
+	 */	
+	if(!prs_init(&o_data->rdata, MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
+		DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
+		return False;
+	}
+
+	return True;
+}
+
+/****************************************************************************
+ Find first available pipe slot.
+****************************************************************************/
+
+smb_np_struct *open_rpc_pipe_p(char *pipe_name, 
+			      struct tcon_context *conn, uint16 vuid)
+{
+	int i;
+	smb_np_struct *p, *p_it;
+	static int next_pipe;
+	BOOL is_spoolss_pipe = False;
+
+	DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n",
+		 pipe_name, pipes_open));
+
+	if (strstr(pipe_name, "spoolss"))
+		is_spoolss_pipe = True;
+ 
+	if (is_spoolss_pipe && current_spoolss_pipes_open >= MAX_OPEN_SPOOLSS_PIPES) {
+		DEBUG(10,("open_rpc_pipe_p: spooler bug workaround. Denying open on pipe %s\n",
+			pipe_name ));
+		return NULL;
+	}
+
+	/* not repeating pipe numbers makes it easier to track things in 
+	   log files and prevents client bugs where pipe numbers are reused
+	   over connection restarts */
+	if (next_pipe == 0)
+		next_pipe = (sys_getpid() ^ time(NULL)) % MAX_OPEN_PIPES;
+
+	i = bitmap_find(bmap, next_pipe);
+
+	if (i == -1) {
+		DEBUG(0,("ERROR! Out of pipe structures\n"));
+		return NULL;
+	}
+
+	next_pipe = (i+1) % MAX_OPEN_PIPES;
+
+	for (p = Pipes; p; p = p->next)
+		DEBUG(5,("open_rpc_pipe_p: name %s pnum=%x\n", p->name, p->pnum));  
+
+	p = (smb_np_struct *)malloc(sizeof(*p));
+
+	if (!p) {
+		DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
+		return NULL;
+	}
+
+	ZERO_STRUCTP(p);
+
+	/* add a dso mechanism instead of this, here */
+
+	p->namedpipe_create = make_internal_rpc_pipe_p;
+	p->namedpipe_read = read_from_internal_pipe;
+	p->namedpipe_write = write_to_internal_pipe;
+	p->namedpipe_close = close_internal_rpc_pipe_hnd;
+
+	p->np_state = p->namedpipe_create(pipe_name, conn, vuid);
+
+	if (p->np_state == NULL) {
+		DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n"));
+		SAFE_FREE(p);
+		return NULL;
+	}
+
+	DLIST_ADD(Pipes, p);
+
+	/*
+	 * Initialize the incoming RPC data buffer with one PDU worth of memory.
+	 * We cheat here and say we're marshalling, as we intend to add incoming
+	 * data directly into the prs_struct and we want it to auto grow. We will
+	 * change the type to UNMARSALLING before processing the stream.
+	 */
+
+	bitmap_set(bmap, i);
+	i += pipe_handle_offset;
+
+	pipes_open++;
+
+	p->pnum = i;
+
+	p->open = True;
+	p->device_state = 0;
+	p->priority = 0;
+	p->conn = conn;
+	p->vuid  = vuid;
+
+	p->max_trans_reply = 0;
+	
+	fstrcpy(p->name, pipe_name);
+	
+	DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
+		 pipe_name, i, pipes_open));
+	
+	chain_p = p;
+	
+	/* Iterate over p_it as a temp variable, to display all open pipes */ 
+	for (p_it = Pipes; p_it; p_it = p_it->next)
+		DEBUG(5,("open pipes: name %s pnum=%x\n", p_it->name, p_it->pnum));  
+
+	return chain_p;
+}
+
+/****************************************************************************
+ Make an internal namedpipes structure
+****************************************************************************/
+
+static void *make_internal_rpc_pipe_p(char *pipe_name, 
+			      struct tcon_context *conn, uint16 vuid)
+{
+	pipes_struct *p;
+	user_struct *vuser = get_valid_user_struct(vuid);
+
+	DEBUG(4,("Create pipe requested %s\n", pipe_name));
+
+	if (!vuser && vuid != UID_FIELD_INVALID) {
+		DEBUG(0,("ERROR! vuid %d did not map to a valid vuser struct!\n", vuid));
+		return NULL;
+	}
+
+	p = (pipes_struct *)malloc(sizeof(*p));
+
+	if (!p)
+	{
+		DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
+		return NULL;
+	}
+
+	ZERO_STRUCTP(p);
+
+	if ((p->mem_ctx = talloc_init("pipe %s %p", pipe_name, p)) == NULL) {
+		DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
+		SAFE_FREE(p);
+		return NULL;
+	}
+
+	if (!init_pipe_handle_list(p, pipe_name)) {
+		DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
+		talloc_destroy(p->mem_ctx);
+		SAFE_FREE(p);
+		return NULL;
+	}
+
+	/*
+	 * Initialize the incoming RPC data buffer with one PDU worth of memory.
+	 * We cheat here and say we're marshalling, as we intend to add incoming
+	 * data directly into the prs_struct and we want it to auto grow. We will
+	 * change the type to UNMARSALLING before processing the stream.
+	 */
+
+	if(!prs_init(&p->in_data.data, MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
+		DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
+		return NULL;
+	}
+
+	DLIST_ADD(InternalPipes, p);
+
+	p->conn = conn;
+
+	/* Ensure the connection isn't idled whilst this pipe is open. */
+	p->conn->num_files_open++;
+
+	p->vuid  = vuid;
+
+	p->ntlmssp_chal_flags = 0;
+	p->ntlmssp_auth_validated = False;
+	p->ntlmssp_auth_requested = False;
+
+	p->pipe_bound = False;
+	p->fault_state = False;
+	p->endian = RPC_LITTLE_ENDIAN;
+
+	ZERO_STRUCT(p->pipe_user);
+
+	p->pipe_user.uid = (uid_t)-1;
+	p->pipe_user.gid = (gid_t)-1;
+	
+	/* Store the session key and NT_TOKEN */
+	if (vuser) {
+		memcpy(p->session_key, vuser->session_key, sizeof(p->session_key));
+		p->pipe_user.nt_user_token = dup_nt_token(vuser->nt_user_token);
+	}
+
+	/*
+	 * Initialize the incoming RPC struct.
+	 */
+
+	p->in_data.pdu_needed_len = 0;
+	p->in_data.pdu_received_len = 0;
+
+	/*
+	 * Initialize the outgoing RPC struct.
+	 */
+
+	p->out_data.current_pdu_len = 0;
+	p->out_data.current_pdu_sent = 0;
+	p->out_data.data_sent_length = 0;
+
+	/*
+	 * Initialize the outgoing RPC data buffer with no memory.
+	 */	
+	prs_init(&p->out_data.rdata, 0, p->mem_ctx, MARSHALL);
+	
+	fstrcpy(p->name, pipe_name);
+	
+	DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
+		 pipe_name, pipes_open));
+
+	return (void*)p;
+}
+
+/****************************************************************************
+ Sets the fault state on incoming packets.
+****************************************************************************/
+
+static void set_incoming_fault(pipes_struct *p)
+{
+	prs_mem_free(&p->in_data.data);
+	p->in_data.pdu_needed_len = 0;
+	p->in_data.pdu_received_len = 0;
+	p->fault_state = True;
+	DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : vuid = 0x%x\n",
+		p->name, p->vuid ));
+}
+
+/****************************************************************************
+ Ensures we have at least RPC_HEADER_LEN amount of data in the incoming buffer.
+****************************************************************************/
+
+static ssize_t fill_rpc_header(pipes_struct *p, char *data, size_t data_to_copy)
+{
+	size_t len_needed_to_complete_hdr = MIN(data_to_copy, RPC_HEADER_LEN - p->in_data.pdu_received_len);
+
+	DEBUG(10,("fill_rpc_header: data_to_copy = %u, len_needed_to_complete_hdr = %u, receive_len = %u\n",
+			(unsigned int)data_to_copy, (unsigned int)len_needed_to_complete_hdr,
+			(unsigned int)p->in_data.pdu_received_len ));
+
+	memcpy((char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, len_needed_to_complete_hdr);
+	p->in_data.pdu_received_len += len_needed_to_complete_hdr;
+
+	return (ssize_t)len_needed_to_complete_hdr;
+}
+
+/****************************************************************************
+ Unmarshalls a new PDU header. Assumes the raw header data is in current_in_pdu.
+****************************************************************************/
+
+static ssize_t unmarshall_rpc_header(pipes_struct *p)
+{
+	/*
+	 * Unmarshall the header to determine the needed length.
+	 */
+
+	prs_struct rpc_in;
+
+	if(p->in_data.pdu_received_len != RPC_HEADER_LEN) {
+		DEBUG(0,("unmarshall_rpc_header: assert on rpc header length failed.\n"));
+		set_incoming_fault(p);
+		return -1;
+	}
+
+	prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL);
+	prs_set_endian_data( &rpc_in, p->endian);
+
+	prs_give_memory( &rpc_in, (char *)&p->in_data.current_in_pdu[0],
+					p->in_data.pdu_received_len, False);
+
+	/*
+	 * Unmarshall the header as this will tell us how much
+	 * data we need to read to get the complete pdu.
+	 * This also sets the endian flag in rpc_in.
+	 */
+
+	if(!smb_io_rpc_hdr("", &p->hdr, &rpc_in, 0)) {
+		DEBUG(0,("unmarshall_rpc_header: failed to unmarshall RPC_HDR.\n"));
+		set_incoming_fault(p);
+		prs_mem_free(&rpc_in);
+		return -1;
+	}
+
+	/*
+	 * Validate the RPC header.
+	 */
+
+	if(p->hdr.major != 5 && p->hdr.minor != 0) {
+		DEBUG(0,("unmarshall_rpc_header: invalid major/minor numbers in RPC_HDR.\n"));
+		set_incoming_fault(p);
+		prs_mem_free(&rpc_in);
+		return -1;
+	}
+
+	/*
+	 * If there's not data in the incoming buffer this should be the start of a new RPC.
+	 */
+
+	if(prs_offset(&p->in_data.data) == 0) {
+
+		/*
+		 * AS/U doesn't set FIRST flag in a BIND packet it seems.
+		 */
+
+		if ((p->hdr.pkt_type == RPC_REQUEST) && !(p->hdr.flags & RPC_FLG_FIRST)) {
+			/*
+			 * Ensure that the FIRST flag is set. If not then we have
+			 * a stream missmatch.
+			 */
+
+			DEBUG(0,("unmarshall_rpc_header: FIRST flag not set in first PDU !\n"));
+			set_incoming_fault(p);
+			prs_mem_free(&rpc_in);
+			return -1;
+		}
+
+		/*
+		 * If this is the first PDU then set the endianness
+		 * flag in the pipe. We will need this when parsing all
+		 * data in this RPC.
+		 */
+
+		p->endian = rpc_in.bigendian_data;
+
+		DEBUG(5,("unmarshall_rpc_header: using %sendian RPC\n",
+				p->endian == RPC_LITTLE_ENDIAN ? "little-" : "big-" ));
+
+	} else {
+
+		/*
+		 * If this is *NOT* the first PDU then check the endianness
+		 * flag in the pipe is the same as that in the PDU.
+		 */
+
+		if (p->endian != rpc_in.bigendian_data) {
+			DEBUG(0,("unmarshall_rpc_header: FIRST endianness flag (%d) different in next PDU !\n", (int)p->endian));
+			set_incoming_fault(p);
+			prs_mem_free(&rpc_in);
+			return -1;
+		}
+	}
+
+	/*
+	 * Ensure that the pdu length is sane.
+	 */
+
+	if((p->hdr.frag_len < RPC_HEADER_LEN) || (p->hdr.frag_len > MAX_PDU_FRAG_LEN)) {
+		DEBUG(0,("unmarshall_rpc_header: assert on frag length failed.\n"));
+		set_incoming_fault(p);
+		prs_mem_free(&rpc_in);
+		return -1;
+	}
+
+	DEBUG(10,("unmarshall_rpc_header: type = %u, flags = %u\n", (unsigned int)p->hdr.pkt_type,
+			(unsigned int)p->hdr.flags ));
+
+	/*
+	 * Adjust for the header we just ate.
+	 */
+	p->in_data.pdu_received_len = 0;
+	p->in_data.pdu_needed_len = (uint32)p->hdr.frag_len - RPC_HEADER_LEN;
+
+	/*
+	 * Null the data we just ate.
+	 */
+
+	memset((char *)&p->in_data.current_in_pdu[0], '\0', RPC_HEADER_LEN);
+
+	prs_mem_free(&rpc_in);
+
+	return 0; /* No extra data processed. */
+}
+
+/****************************************************************************
+ Call this to free any talloc'ed memory. Do this before and after processing
+ a complete PDU.
+****************************************************************************/
+
+void free_pipe_context(pipes_struct *p)
+{
+	if (p->mem_ctx) {
+		DEBUG(3,("free_pipe_context: destroying talloc pool of size %u\n", talloc_pool_size(p->mem_ctx) ));
+		talloc_destroy_pool(p->mem_ctx);
+	} else {
+		p->mem_ctx = talloc_init("pipe %s %p", p->name, p);
+		if (p->mem_ctx == NULL)
+			p->fault_state = True;
+	}
+}
+
+/****************************************************************************
+ Processes a request pdu. This will do auth processing if needed, and
+ appends the data into the complete stream if the LAST flag is not set.
+****************************************************************************/
+
+static BOOL process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p)
+{
+	BOOL auth_verify = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SIGN) != 0);
+	size_t data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
+				(auth_verify ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len;
+
+	if(!p->pipe_bound) {
+		DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
+		set_incoming_fault(p);
+		return False;
+	}
+
+	/*
+	 * Check if we need to do authentication processing.
+	 * This is only done on requests, not binds.
+	 */
+
+	/*
+	 * Read the RPC request header.
+	 */
+
+	if(!smb_io_rpc_hdr_req("req", &p->hdr_req, rpc_in_p, 0)) {
+		DEBUG(0,("process_request_pdu: failed to unmarshall RPC_HDR_REQ.\n"));
+		set_incoming_fault(p);
+		return False;
+	}
+
+	if(p->ntlmssp_auth_validated && !api_pipe_auth_process(p, rpc_in_p)) {
+		DEBUG(0,("process_request_pdu: failed to do auth processing.\n"));
+		set_incoming_fault(p);
+		return False;
+	}
+
+	if (p->ntlmssp_auth_requested && !p->ntlmssp_auth_validated) {
+
+		/*
+		 * Authentication _was_ requested and it already failed.
+		 */
+
+		DEBUG(0,("process_request_pdu: RPC request received on pipe %s where \
+authentication failed. Denying the request.\n", p->name));
+		set_incoming_fault(p);
+        return False;
+    }
+
+	/*
+	 * Check the data length doesn't go over the 15Mb limit.
+	 * increased after observing a bug in the Windows NT 4.0 SP6a
+	 * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC
+	 * will not fit in the initial buffer of size 0x1068   --jerry 22/01/2002
+	 */
+	
+	if(prs_offset(&p->in_data.data) + data_len > 15*1024*1024) {
+		DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
+				(unsigned int)prs_data_size(&p->in_data.data), (unsigned int)data_len ));
+		set_incoming_fault(p);
+		return False;
+	}
+
+	/*
+	 * Append the data portion into the buffer and return.
+	 */
+
+	if(!prs_append_some_prs_data(&p->in_data.data, rpc_in_p, prs_offset(rpc_in_p), data_len)) {
+		DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
+				(unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) ));
+		set_incoming_fault(p);
+		return False;
+	}
+
+	if(p->hdr.flags & RPC_FLG_LAST) {
+		BOOL ret = False;
+		/*
+		 * Ok - we finally have a complete RPC stream.
+		 * Call the rpc command to process it.
+		 */
+
+		/*
+		 * Ensure the internal prs buffer size is *exactly* the same
+		 * size as the current offset.
+		 */
+
+ 		if(!prs_set_buffer_size(&p->in_data.data, prs_offset(&p->in_data.data)))
+		{
+			DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n"));
+			set_incoming_fault(p);
+			return False;
+		}
+
+		/*
+		 * Set the parse offset to the start of the data and set the
+		 * prs_struct to UNMARSHALL.
+		 */
+
+		prs_set_offset(&p->in_data.data, 0);
+		prs_switch_type(&p->in_data.data, UNMARSHALL);
+
+		/*
+		 * Process the complete data stream here.
+		 */
+
+		free_pipe_context(p);
+
+		if(pipe_init_outgoing_data(p))
+			ret = api_pipe_request(p);
+
+		free_pipe_context(p);
+
+		/*
+		 * We have consumed the whole data stream. Set back to
+		 * marshalling and set the offset back to the start of
+		 * the buffer to re-use it (we could also do a prs_mem_free()
+		 * and then re_init on the next start of PDU. Not sure which
+		 * is best here.... JRA.
+		 */
+
+		prs_switch_type(&p->in_data.data, MARSHALL);
+		prs_set_offset(&p->in_data.data, 0);
+		return ret;
+	}
+
+	return True;
+}
+
+/****************************************************************************
+ Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
+ already been parsed and stored in p->hdr.
+****************************************************************************/
+
+static ssize_t process_complete_pdu(pipes_struct *p)
+{
+	prs_struct rpc_in;
+	size_t data_len = p->in_data.pdu_received_len;
+	char *data_p = (char *)&p->in_data.current_in_pdu[0];
+	BOOL reply = False;
+
+	if(p->fault_state) {
+		DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
+			p->name ));
+		set_incoming_fault(p);
+		setup_fault_pdu(p, NT_STATUS(0x1c010002));
+		return (ssize_t)data_len;
+	}
+
+	prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL);
+
+	/*
+	 * Ensure we're using the corrent endianness for both the 
+	 * RPC header flags and the raw data we will be reading from.
+	 */
+
+	prs_set_endian_data( &rpc_in, p->endian);
+	prs_set_endian_data( &p->in_data.data, p->endian);
+
+	prs_give_memory( &rpc_in, data_p, (uint32)data_len, False);
+
+	DEBUG(10,("process_complete_pdu: processing packet type %u\n",
+			(unsigned int)p->hdr.pkt_type ));
+
+	switch (p->hdr.pkt_type) {
+		case RPC_BIND:
+		case RPC_ALTCONT:
+			/*
+			 * We assume that a pipe bind is only in one pdu.
+			 */
+			if(pipe_init_outgoing_data(p))
+				reply = api_pipe_bind_req(p, &rpc_in);
+			break;
+		case RPC_BINDRESP:
+			/*
+			 * We assume that a pipe bind_resp is only in one pdu.
+			 */
+			if(pipe_init_outgoing_data(p))
+				reply = api_pipe_bind_auth_resp(p, &rpc_in);
+			break;
+		case RPC_REQUEST:
+			reply = process_request_pdu(p, &rpc_in);
+			break;
+		default:
+			DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p->hdr.pkt_type ));
+			break;
+	}
+
+	/* Reset to little endian. Probably don't need this but it won't hurt. */
+	prs_set_endian_data( &p->in_data.data, RPC_LITTLE_ENDIAN);
+
+	if (!reply) {
+		DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p->pipe_srv_name));
+		set_incoming_fault(p);
+		setup_fault_pdu(p, NT_STATUS(0x1c010002));
+		prs_mem_free(&rpc_in);
+	} else {
+		/*
+		 * Reset the lengths. We're ready for a new pdu.
+		 */
+		p->in_data.pdu_needed_len = 0;
+		p->in_data.pdu_received_len = 0;
+	}
+
+	prs_mem_free(&rpc_in);
+	return (ssize_t)data_len;
+}
+
+/****************************************************************************
+ Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
+****************************************************************************/
+
+static ssize_t process_incoming_data(pipes_struct *p, char *data, size_t n)
+{
+	size_t data_to_copy = MIN(n, MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len);
+
+	DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n",
+		(unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len,
+		(unsigned int)n ));
+
+	if(data_to_copy == 0) {
+		/*
+		 * This is an error - data is being received and there is no
+		 * space in the PDU. Free the received data and go into the fault state.
+		 */
+		DEBUG(0,("process_incoming_data: No space in incoming pdu buffer. Current size = %u \
+incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned int)n ));
+		set_incoming_fault(p);
+		return -1;
+	}
+
+	/*
+	 * If we have no data already, wait until we get at least a RPC_HEADER_LEN
+	 * number of bytes before we can do anything.
+	 */
+
+	if((p->in_data.pdu_needed_len == 0) && (p->in_data.pdu_received_len < RPC_HEADER_LEN)) {
+		/*
+		 * Always return here. If we have more data then the RPC_HEADER
+		 * will be processed the next time around the loop.
+		 */
+		return fill_rpc_header(p, data, data_to_copy);
+	}
+
+	/*
+	 * At this point we know we have at least an RPC_HEADER_LEN amount of data
+	 * stored in current_in_pdu.
+	 */
+
+	/*
+	 * If pdu_needed_len is zero this is a new pdu. 
+	 * Unmarshall the header so we know how much more
+	 * data we need, then loop again.
+	 */
+
+	if(p->in_data.pdu_needed_len == 0)
+		return unmarshall_rpc_header(p);
+
+	/*
+	 * Ok - at this point we have a valid RPC_HEADER in p->hdr.
+	 * Keep reading until we have a full pdu.
+	 */
+
+	data_to_copy = MIN(data_to_copy, p->in_data.pdu_needed_len);
+
+	/*
+	 * Copy as much of the data as we need into the current_in_pdu buffer.
+	 */
+
+	memcpy( (char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, data_to_copy);
+	p->in_data.pdu_received_len += data_to_copy;
+
+	/*
+	 * Do we have a complete PDU ?
+	 */
+
+	if(p->in_data.pdu_received_len == p->in_data.pdu_needed_len)
+		return process_complete_pdu(p);
+
+	DEBUG(10,("process_incoming_data: not a complete PDU yet. pdu_received_len = %u, pdu_needed_len = %u\n",
+		(unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len ));
+
+	return (ssize_t)data_to_copy;
+
+}
+
+/****************************************************************************
+ Accepts incoming data on an rpc pipe.
+****************************************************************************/
+
+ssize_t write_to_pipe(smb_np_struct *p, char *data, size_t n)
+{
+	DEBUG(6,("write_to_pipe: %x", p->pnum));
+
+	DEBUG(6,(" name: %s open: %s len: %d\n",
+		 p->name, BOOLSTR(p->open), (int)n));
+
+	dump_data(50, data, n);
+
+	return p->namedpipe_write(p->np_state, data, n);
+}
+
+/****************************************************************************
+ Accepts incoming data on an internal rpc pipe.
+****************************************************************************/
+
+static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n)
+{
+	pipes_struct *p = (pipes_struct*)np_conn;
+	size_t data_left = n;
+
+	while(data_left) {
+		ssize_t data_used;
+
+		DEBUG(10,("write_to_pipe: data_left = %u\n", (unsigned int)data_left ));
+
+		data_used = process_incoming_data(p, data, data_left);
+
+		DEBUG(10,("write_to_pipe: data_used = %d\n", (int)data_used ));
+
+		if(data_used < 0)
+			return -1;
+
+		data_left -= data_used;
+		data += data_used;
+	}	
+
+	return n;
+}
+
+/****************************************************************************
+ Replies to a request to read data from a pipe.
+
+ Headers are interspersed with the data at PDU intervals. By the time
+ this function is called, the start of the data could possibly have been
+ read by an SMBtrans (file_offset != 0).
+
+ Calling create_rpc_reply() here is a hack. The data should already
+ have been prepared into arrays of headers + data stream sections.
+****************************************************************************/
+
+ssize_t read_from_pipe(smb_np_struct *p, char *data, size_t n,
+		BOOL *is_data_outstanding)
+{
+	if (!p || !p->open) {
+		DEBUG(0,("read_from_pipe: pipe not open\n"));
+		return -1;		
+	}
+
+	DEBUG(6,("read_from_pipe: %x", p->pnum));
+
+	return p->namedpipe_read(p->np_state, data, n, is_data_outstanding);
+}
+
+/****************************************************************************
+ Replies to a request to read data from a pipe.
+
+ Headers are interspersed with the data at PDU intervals. By the time
+ this function is called, the start of the data could possibly have been
+ read by an SMBtrans (file_offset != 0).
+
+ Calling create_rpc_reply() here is a hack. The data should already
+ have been prepared into arrays of headers + data stream sections.
+****************************************************************************/
+
+static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
+		BOOL *is_data_outstanding)
+{
+	pipes_struct *p = (pipes_struct*)np_conn;
+	uint32 pdu_remaining = 0;
+	ssize_t data_returned = 0;
+
+	if (!p) {
+		DEBUG(0,("read_from_pipe: pipe not open\n"));
+		return -1;		
+	}
+
+	DEBUG(6,(" name: %s len: %u\n", p->name, (unsigned int)n));
+
+	/*
+	 * We cannot return more than one PDU length per
+	 * read request.
+	 */
+
+	/*
+	 * This condition should result in the connection being closed.  
+	 * Netapp filers seem to set it to 0xffff which results in domain
+	 * authentications failing.  Just ignore it so things work.
+	 */
+
+	if(n > MAX_PDU_FRAG_LEN) {
+                DEBUG(5,("read_from_pipe: too large read (%u) requested on \
+pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, MAX_PDU_FRAG_LEN ));
+	}
+
+	/*
+ 	 * Determine if there is still data to send in the
+	 * pipe PDU buffer. Always send this first. Never
+	 * send more than is left in the current PDU. The
+	 * client should send a new read request for a new
+	 * PDU.
+	 */
+
+	if((pdu_remaining = p->out_data.current_pdu_len - p->out_data.current_pdu_sent) > 0) {
+		data_returned = (ssize_t)MIN(n, pdu_remaining);
+
+		DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, current_pdu_sent = %u \
+returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len, 
+			(unsigned int)p->out_data.current_pdu_sent, (int)data_returned));
+
+		memcpy( data, &p->out_data.current_pdu[p->out_data.current_pdu_sent], (size_t)data_returned);
+		p->out_data.current_pdu_sent += (uint32)data_returned;
+		goto out;
+	}
+
+	/*
+	 * At this point p->current_pdu_len == p->current_pdu_sent (which
+	 * may of course be zero if this is the first return fragment.
+	 */
+
+	DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length \
+= %u, prs_offset(&p->out_data.rdata) = %u.\n",
+		p->name, (int)p->fault_state, (unsigned int)p->out_data.data_sent_length, (unsigned int)prs_offset(&p->out_data.rdata) ));
+
+	if(p->out_data.data_sent_length >= prs_offset(&p->out_data.rdata)) {
+		/*
+		 * We have sent all possible data, return 0.
+		 */
+		data_returned = 0;
+		goto out;
+	}
+
+	/*
+	 * We need to create a new PDU from the data left in p->rdata.
+	 * Create the header/data/footers. This also sets up the fields
+	 * p->current_pdu_len, p->current_pdu_sent, p->data_sent_length
+	 * and stores the outgoing PDU in p->current_pdu.
+	 */
+
+	if(!create_next_pdu(p)) {
+		DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n", p->name));
+		return -1;
+	}
+
+	data_returned = MIN(n, p->out_data.current_pdu_len);
+
+	memcpy( data, p->out_data.current_pdu, (size_t)data_returned);
+	p->out_data.current_pdu_sent += (uint32)data_returned;
+
+  out:
+
+	(*is_data_outstanding) = p->out_data.current_pdu_len > n;
+	return data_returned;
+}
+
+/****************************************************************************
+ Wait device state on a pipe. Exactly what this is for is unknown...
+****************************************************************************/
+
+BOOL wait_rpc_pipe_hnd_state(smb_np_struct *p, uint16 priority)
+{
+	if (p == NULL)
+		return False;
+
+	if (p->open) {
+		DEBUG(3,("wait_rpc_pipe_hnd_state: Setting pipe wait state priority=%x on pipe (name=%s)\n",
+		         priority, p->name));
+
+		p->priority = priority;
+		
+		return True;
+	} 
+
+	DEBUG(3,("wait_rpc_pipe_hnd_state: Error setting pipe wait state priority=%x (name=%s)\n",
+		 priority, p->name));
+	return False;
+}
+
+
+/****************************************************************************
+ Set device state on a pipe. Exactly what this is for is unknown...
+****************************************************************************/
+
+BOOL set_rpc_pipe_hnd_state(smb_np_struct *p, uint16 device_state)
+{
+	if (p == NULL)
+		return False;
+
+	if (p->open) {
+		DEBUG(3,("set_rpc_pipe_hnd_state: Setting pipe device state=%x on pipe (name=%s)\n",
+		         device_state, p->name));
+
+		p->device_state = device_state;
+		
+		return True;
+	} 
+
+	DEBUG(3,("set_rpc_pipe_hnd_state: Error setting pipe device state=%x (name=%s)\n",
+		 device_state, p->name));
+	return False;
+}
+
+
+/****************************************************************************
+ Close an rpc pipe.
+****************************************************************************/
+
+BOOL close_rpc_pipe_hnd(smb_np_struct *p)
+{
+	if (!p) {
+		DEBUG(0,("Invalid pipe in close_rpc_pipe_hnd\n"));
+		return False;
+	}
+
+	p->namedpipe_close(p->np_state);
+
+	bitmap_clear(bmap, p->pnum - pipe_handle_offset);
+
+	pipes_open--;
+
+	DEBUG(4,("closed pipe name %s pnum=%x (pipes_open=%d)\n", 
+		 p->name, p->pnum, pipes_open));  
+
+	DLIST_REMOVE(Pipes, p);
+
+	ZERO_STRUCTP(p);
+
+	SAFE_FREE(p);
+
+	return True;
+}
+
+/****************************************************************************
+ Close an rpc pipe.
+****************************************************************************/
+
+static BOOL close_internal_rpc_pipe_hnd(void *np_conn)
+{
+	pipes_struct *p = (pipes_struct *)np_conn;
+	if (!p) {
+		DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
+		return False;
+	}
+
+	prs_mem_free(&p->out_data.rdata);
+	prs_mem_free(&p->in_data.data);
+
+	if (p->mem_ctx)
+		talloc_destroy(p->mem_ctx);
+
+	/* Free the handles database. */
+	close_policy_by_pipe(p);
+
+	delete_nt_token(&p->pipe_user.nt_user_token);
+	SAFE_FREE(p->pipe_user.groups);
+
+	DLIST_REMOVE(InternalPipes, p);
+
+	p->conn->num_files_open--;
+
+	ZERO_STRUCTP(p);
+
+	SAFE_FREE(p);
+	
+	return True;
+}
+
+/****************************************************************************
+ Find an rpc pipe given a pipe handle in a buffer and an offset.
+****************************************************************************/
+
+smb_np_struct *get_rpc_pipe_p(char *buf, int where)
+{
+	int pnum = SVAL(buf,where);
+
+	if (chain_p)
+		return chain_p;
+
+	return get_rpc_pipe(pnum);
+}
+
+/****************************************************************************
+ Find an rpc pipe given a pipe handle.
+****************************************************************************/
+
+smb_np_struct *get_rpc_pipe(int pnum)
+{
+	smb_np_struct *p;
+
+	DEBUG(4,("search for pipe pnum=%x\n", pnum));
+
+	for (p=Pipes;p;p=p->next)
+		DEBUG(5,("pipe name %s pnum=%x (pipes_open=%d)\n", 
+		          p->name, p->pnum, pipes_open));  
+
+	for (p=Pipes;p;p=p->next) {
+		if (p->pnum == pnum) {
+			chain_p = p;
+			return p;
+		}
+	}
+
+	return NULL;
+}