-/*
+/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-1998,
* Largely re-written : 2005
* Copyright (C) Jeremy Allison 1998 - 2005
- *
+ *
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-#include "../librpc/gen_ndr/srv_spoolss.h"
-#include "librpc/gen_ndr/ndr_named_pipe_auth.h"
-#include "../libcli/named_pipe_auth/npa_tstream.h"
+#include "fake_file.h"
+#include "rpc_dce.h"
+#include "ntdomain.h"
+#include "rpc_server/rpc_ncacn_np.h"
+#include "rpc_server/srv_pipe_hnd.h"
+#include "rpc_server/srv_pipe.h"
+#include "rpc_server/rpc_server.h"
+#include "../lib/tsocket/tsocket.h"
+#include "../lib/util/tevent_ntstatus.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
-/****************************************************************************
- 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_sent = 0;
-
- prs_mem_free(&o_data->frag);
-
- /* 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, 128, p->mem_ctx, MARSHALL)) {
- DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
- return False;
- }
-
- return True;
-}
-
-/****************************************************************************
- 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\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
-}
-
/****************************************************************************
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)
+static ssize_t fill_rpc_header(struct pipes_struct *p, const 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);
+ size_t len_needed_to_complete_hdr =
+ MIN(data_to_copy, RPC_HEADER_LEN - p->in_data.pdu.length);
- 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 ));
+ 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.length ));
- if (p->in_data.current_in_pdu == NULL) {
- p->in_data.current_in_pdu = talloc_array(p, uint8_t,
- RPC_HEADER_LEN);
+ if (p->in_data.pdu.data == NULL) {
+ p->in_data.pdu.data = talloc_array(p, uint8_t, RPC_HEADER_LEN);
}
- if (p->in_data.current_in_pdu == NULL) {
+ if (p->in_data.pdu.data == NULL) {
DEBUG(0, ("talloc failed\n"));
return -1;
}
- 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;
+ memcpy((char *)&p->in_data.pdu.data[p->in_data.pdu.length],
+ data, len_needed_to_complete_hdr);
+ p->in_data.pdu.length += 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_empty( &rpc_in, 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 == DCERPC_PKT_REQUEST) && !(p->hdr.flags & DCERPC_PFC_FLAG_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 > RPC_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 ));
-
- p->in_data.pdu_needed_len = (uint32)p->hdr.frag_len - RPC_HEADER_LEN;
-
- prs_mem_free(&rpc_in);
-
- p->in_data.current_in_pdu = TALLOC_REALLOC_ARRAY(
- p, p->in_data.current_in_pdu, uint8_t, p->hdr.frag_len);
- if (p->in_data.current_in_pdu == NULL) {
- DEBUG(0, ("talloc failed\n"));
- set_incoming_fault(p);
- return -1;
- }
-
- return 0; /* No extra data processed. */
-}
-
-/****************************************************************************
- Call this to free any talloc'ed memory. Do this before and after processing
- a complete PDU.
-****************************************************************************/
-
-static void free_pipe_context(pipes_struct *p)
-{
- if (p->mem_ctx) {
- DEBUG(3,("free_pipe_context: destroying talloc pool of size "
- "%lu\n", (unsigned long)talloc_total_size(p->mem_ctx) ));
- talloc_free_children(p->mem_ctx);
- } else {
- p->mem_ctx = talloc_named(p, 0, "pipe %s %p",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax), 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)
+static bool get_pdu_size(struct pipes_struct *p)
{
- uint32 ss_padding_len = 0;
- size_t data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
- (p->hdr.auth_len ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len;
-
- if(!p->pipe_bound) {
- DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
+ uint16_t frag_len;
+ /* the fill_rpc_header() call insures we copy only
+ * RPC_HEADER_LEN bytes. If this doesn't match then
+ * somethign is very wrong and we can only abort */
+ if (p->in_data.pdu.length != RPC_HEADER_LEN) {
+ DEBUG(0, ("Unexpected RPC Header size! "
+ "got %d, expected %d)\n",
+ (int)p->in_data.pdu.length,
+ RPC_HEADER_LEN));
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;
- }
-
- switch(p->auth.auth_type) {
- case PIPE_AUTH_TYPE_NONE:
- break;
-
- case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
- case PIPE_AUTH_TYPE_NTLMSSP:
- {
- NTSTATUS status;
- if(!api_pipe_ntlmssp_auth_process(p, rpc_in_p, &ss_padding_len, &status)) {
- DEBUG(0,("process_request_pdu: failed to do auth processing.\n"));
- DEBUG(0,("process_request_pdu: error was %s.\n", nt_errstr(status) ));
- set_incoming_fault(p);
- return False;
- }
- break;
- }
-
- case PIPE_AUTH_TYPE_SCHANNEL:
- if (!api_pipe_schannel_process(p, rpc_in_p, &ss_padding_len)) {
- DEBUG(3,("process_request_pdu: failed to do schannel processing.\n"));
- set_incoming_fault(p);
- return False;
- }
- break;
-
- default:
- DEBUG(0,("process_request_pdu: unknown auth type %u set.\n", (unsigned int)p->auth.auth_type ));
- set_incoming_fault(p);
- return False;
+ return false;
}
- /* Now we've done the sign/seal we can remove any padding data. */
- if (data_len > ss_padding_len) {
- data_len -= ss_padding_len;
- }
+ frag_len = dcerpc_get_frag_length(&p->in_data.pdu);
- /*
- * 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 > MAX_RPC_DATA_SIZE) {
- 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 ));
+ /* verify it is a reasonable value */
+ if ((frag_len < RPC_HEADER_LEN) ||
+ (frag_len > RPC_MAX_PDU_FRAG_LEN)) {
+ DEBUG(0, ("Unexpected RPC Fragment size! (%d)\n",
+ frag_len));
set_incoming_fault(p);
- return False;
+ return false;
}
- /*
- * Append the data portion into the buffer and return.
- */
+ p->in_data.pdu_needed_len = frag_len - RPC_HEADER_LEN;
- 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) ));
+ /* allocate the space needed to fill the pdu */
+ p->in_data.pdu.data = talloc_realloc(p, p->in_data.pdu.data,
+ uint8_t, frag_len);
+ if (p->in_data.pdu.data == NULL) {
+ DEBUG(0, ("talloc_realloc failed\n"));
set_incoming_fault(p);
- return False;
- }
-
- if(p->hdr.flags & DCERPC_PFC_FLAG_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 false;
}
- return True;
+ return true;
}
/****************************************************************************
- Processes a finished PDU stored in current_in_pdu. The RPC_HEADER has
- already been parsed and stored in p->hdr.
+ Call this to free any talloc'ed memory. Do this after processing
+ a complete incoming and outgoing request (multiple incoming/outgoing
+ PDU's).
****************************************************************************/
-static void process_complete_pdu(pipes_struct *p)
+static void free_pipe_context(struct pipes_struct *p)
{
- prs_struct rpc_in;
- size_t data_len = p->in_data.pdu_received_len - RPC_HEADER_LEN;
- char *data_p = (char *)&p->in_data.current_in_pdu[RPC_HEADER_LEN];
- bool reply = False;
-
- if(p->fault_state) {
- DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
- set_incoming_fault(p);
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- return;
- }
-
- prs_init_empty( &rpc_in, 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 DCERPC_PKT_REQUEST:
- reply = process_request_pdu(p, &rpc_in);
- break;
-
- case DCERPC_PKT_PING: /* CL request - ignore... */
- DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
- (unsigned int)p->hdr.pkt_type,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- break;
-
- case DCERPC_PKT_RESPONSE: /* No responses here. */
- DEBUG(0,("process_complete_pdu: Error. DCERPC_PKT_RESPONSE received from client on pipe %s.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- break;
-
- case DCERPC_PKT_FAULT:
- case DCERPC_PKT_WORKING: /* CL request - reply to a ping when a call in process. */
- case DCERPC_PKT_NOCALL: /* CL - server reply to a ping call. */
- case DCERPC_PKT_REJECT:
- case DCERPC_PKT_ACK:
- case DCERPC_PKT_CL_CANCEL:
- case DCERPC_PKT_FACK:
- case DCERPC_PKT_CANCEL_ACK:
- DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
- (unsigned int)p->hdr.pkt_type,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- break;
-
- case DCERPC_PKT_BIND:
- /*
- * 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 DCERPC_PKT_BIND_ACK:
- case DCERPC_PKT_BIND_NAK:
- DEBUG(0,("process_complete_pdu: Error. DCERPC_PKT_BINDACK/DCERPC_PKT_BINDNACK packet type %u received on pipe %s.\n",
- (unsigned int)p->hdr.pkt_type,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- break;
-
-
- case DCERPC_PKT_ALTER:
- /*
- * We assume that a pipe bind is only in one pdu.
- */
- if(pipe_init_outgoing_data(p)) {
- reply = api_pipe_alter_context(p, &rpc_in);
- }
- break;
-
- case DCERPC_PKT_ALTER_RESP:
- DEBUG(0,("process_complete_pdu: Error. DCERPC_PKT_ALTER_RESP on pipe %s: Should only be server -> client.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- break;
-
- case DCERPC_PKT_AUTH3:
- /*
- * The third packet in an NTLMSSP auth exchange.
- */
- if(pipe_init_outgoing_data(p)) {
- reply = api_pipe_bind_auth3(p, &rpc_in);
- }
- break;
-
- case DCERPC_PKT_SHUTDOWN:
- DEBUG(0,("process_complete_pdu: Error. DCERPC_PKT_SHUTDOWN on pipe %s: Should only be server -> client.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- break;
-
- case DCERPC_PKT_CO_CANCEL:
- /* For now just free all client data and continue processing. */
- DEBUG(3,("process_complete_pdu: DCERPC_PKT_CO_CANCEL. Abandoning rpc call.\n"));
- /* As we never do asynchronous RPC serving, we can never cancel a
- call (as far as I know). If we ever did we'd have to send a cancel_ack
- reply. For now, just free all client data and continue processing. */
- reply = True;
- break;
-#if 0
- /* Enable this if we're doing async rpc. */
- /* We must check the call-id matches the outstanding callid. */
- if(pipe_init_outgoing_data(p)) {
- /* Send a cancel_ack PDU reply. */
- /* We should probably check the auth-verifier here. */
- reply = setup_cancel_ack_reply(p, &rpc_in);
- }
- break;
-#endif
-
- case DCERPC_PKT_ORPHANED:
- /* We should probably check the auth-verifier here.
- For now just free all client data and continue processing. */
- DEBUG(3,("process_complete_pdu: DCERPC_PKT_ORPHANED. Abandoning rpc call.\n"));
- reply = True;
- 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", get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- set_incoming_fault(p);
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- prs_mem_free(&rpc_in);
- } else {
- /*
- * Reset the lengths. We're ready for a new pdu.
- */
- TALLOC_FREE(p->in_data.current_in_pdu);
- p->in_data.pdu_needed_len = 0;
- p->in_data.pdu_received_len = 0;
- }
-
- prs_mem_free(&rpc_in);
+ data_blob_free(&p->out_data.frag);
+ data_blob_free(&p->out_data.rdata);
+ data_blob_free(&p->in_data.data);
+
+ DEBUG(3, ("free_pipe_context: "
+ "destroying talloc pool of size %lu\n",
+ (unsigned long)talloc_total_size(p->mem_ctx)));
+ talloc_free_children(p->mem_ctx);
}
/****************************************************************************
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)
+ssize_t process_incoming_data(struct pipes_struct *p, const char *data, size_t n)
{
- size_t data_to_copy = MIN(n, RPC_MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len);
+ size_t data_to_copy = MIN(n, RPC_MAX_PDU_FRAG_LEN
+ - p->in_data.pdu.length);
- 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 ));
+ DEBUG(10, ("process_incoming_data: Start: pdu.length = %u, "
+ "pdu_needed_len = %u, incoming data = %u\n",
+ (unsigned int)p->in_data.pdu.length,
+ (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.
+ * 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 ));
+ 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.length,
+ (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 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)) {
+ if ((p->in_data.pdu_needed_len == 0) &&
+ (p->in_data.pdu.length < RPC_HEADER_LEN)) {
/*
* Always return here. If we have more data then the RPC_HEADER
* will be processed the next time around the loop.
}
/*
- * At this point we know we have at least an RPC_HEADER_LEN amount of data
- * stored in current_in_pdu.
+ * At this point we know we have at least an RPC_HEADER_LEN amount of
+ * data stored in p->in_data.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 pdu_needed_len is zero this is a new pdu.
+ * Check how much more data we need, then loop again.
*/
+ if (p->in_data.pdu_needed_len == 0) {
- if(p->in_data.pdu_needed_len == 0) {
- ssize_t rret = unmarshall_rpc_header(p);
- if (rret == -1 || p->in_data.pdu_needed_len > 0) {
- return rret;
+ bool ok = get_pdu_size(p);
+ if (!ok) {
+ return -1;
+ }
+ if (p->in_data.pdu_needed_len > 0) {
+ return 0;
}
- /* If rret == 0 and pdu_needed_len == 0 here we have a PDU that consists
- of an RPC_HEADER only. This is a DCERPC_PKT_SHUTDOWN, DCERPC_PKT_CO_CANCEL or DCERPC_PKT_ORPHANED
- pdu type. Deal with this in process_complete_pdu(). */
+
+ /* If rret == 0 and pdu_needed_len == 0 here we have a PDU
+ * that consists of an RPC_HEADER only. This is a
+ * DCERPC_PKT_SHUTDOWN, DCERPC_PKT_CO_CANCEL or
+ * DCERPC_PKT_ORPHANED pdu type.
+ * Deal with this in process_complete_pdu(). */
}
/*
- * Ok - at this point we have a valid RPC_HEADER in p->hdr.
+ * Ok - at this point we have a valid RPC_HEADER.
* 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.
+ * Copy as much of the data as we need into the p->in_data.pdu buffer.
* pdu_needed_len becomes zero when we have a complete pdu.
*/
- 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;
+ memcpy((char *)&p->in_data.pdu.data[p->in_data.pdu.length],
+ data, data_to_copy);
+ p->in_data.pdu.length += data_to_copy;
p->in_data.pdu_needed_len -= data_to_copy;
/*
return data_to_copy;
}
- 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 ));
+ DEBUG(10, ("process_incoming_data: not a complete PDU yet. "
+ "pdu.length = %u, pdu_needed_len = %u\n",
+ (unsigned int)p->in_data.pdu.length,
+ (unsigned int)p->in_data.pdu_needed_len));
return (ssize_t)data_to_copy;
}
Accepts incoming data on an internal rpc pipe.
****************************************************************************/
-static ssize_t write_to_internal_pipe(struct pipes_struct *p, char *data, size_t n)
+static ssize_t write_to_internal_pipe(struct pipes_struct *p, const char *data, size_t n)
{
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 ));
+ 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 ));
+ 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;
}
have been prepared into arrays of headers + data stream sections.
****************************************************************************/
-static ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data, size_t n,
- bool *is_data_outstanding)
+static ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data,
+ size_t n, bool *is_data_outstanding)
{
uint32 pdu_remaining = 0;
ssize_t data_returned = 0;
if (!p) {
DEBUG(0,("read_from_pipe: pipe not open\n"));
- return -1;
+ return -1;
}
DEBUG(6,(" name: %s len: %u\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
+ get_pipe_name_from_syntax(talloc_tos(), &p->contexts->syntax),
(unsigned int)n));
/*
*/
/*
- * This condition should result in the connection being closed.
+ * 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.
*/
DEBUG(5,("read_from_pipe: too large read (%u) requested on "
"pipe %s. We can only service %d sized reads.\n",
(unsigned int)n,
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
+ get_pipe_name_from_syntax(talloc_tos(), &p->contexts->syntax),
RPC_MAX_PDU_FRAG_LEN ));
n = RPC_MAX_PDU_FRAG_LEN;
}
* PDU.
*/
- pdu_remaining = prs_offset(&p->out_data.frag)
+ pdu_remaining = p->out_data.frag.length
- p->out_data.current_pdu_sent;
if (pdu_remaining > 0) {
DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, "
"current_pdu_sent = %u returning %d bytes.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
- (unsigned int)prs_offset(&p->out_data.frag),
+ get_pipe_name_from_syntax(talloc_tos(), &p->contexts->syntax),
+ (unsigned int)p->out_data.frag.length,
(unsigned int)p->out_data.current_pdu_sent,
(int)data_returned));
memcpy(data,
- prs_data_p(&p->out_data.frag)
+ p->out_data.frag.data
+ p->out_data.current_pdu_sent,
data_returned);
*/
DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length "
- "= %u, prs_offset(&p->out_data.rdata) = %u.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
+ "= %u, p->out_data.rdata.length = %u.\n",
+ get_pipe_name_from_syntax(talloc_tos(), &p->contexts->syntax),
(int)p->fault_state,
(unsigned int)p->out_data.data_sent_length,
- (unsigned int)prs_offset(&p->out_data.rdata) ));
+ (unsigned int)p->out_data.rdata.length));
- if(p->out_data.data_sent_length >= prs_offset(&p->out_data.rdata)) {
+ if (p->out_data.data_sent_length >= p->out_data.rdata.length) {
/*
* We have sent all possible data, return 0.
*/
if(!create_next_pdu(p)) {
DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ get_pipe_name_from_syntax(talloc_tos(), &p->contexts->syntax)));
return -1;
}
- data_returned = MIN(n, prs_offset(&p->out_data.frag));
+ data_returned = MIN(n, p->out_data.frag.length);
- memcpy( data, prs_data_p(&p->out_data.frag), (size_t)data_returned);
+ memcpy(data, p->out_data.frag.data, (size_t)data_returned);
p->out_data.current_pdu_sent += (uint32)data_returned;
out:
- (*is_data_outstanding) = prs_offset(&p->out_data.frag) > n;
+ (*is_data_outstanding) = p->out_data.frag.length > n;
- if (p->out_data.current_pdu_sent == prs_offset(&p->out_data.frag)) {
+ if (p->out_data.current_pdu_sent == p->out_data.frag.length) {
/* We've returned everything in the out_data.frag
* so we're done with this pdu. Free it and reset
* current_pdu_sent. */
p->out_data.current_pdu_sent = 0;
- prs_mem_free(&p->out_data.frag);
+ data_blob_free(&p->out_data.frag);
+
+ if (p->out_data.data_sent_length >= p->out_data.rdata.length) {
+ /*
+ * We're completely finished with both outgoing and
+ * incoming data streams. It's safe to free all
+ * temporary data from this request.
+ */
+ free_pipe_context(p);
+ }
}
+
return data_returned;
}
|| (type == FAKE_FILE_TYPE_NAMED_PIPE_PROXY));
}
-struct np_proxy_state {
- uint16_t file_type;
- uint16_t device_state;
- uint64_t allocation_size;
- struct tstream_context *npipe;
- struct tevent_queue *read_queue;
- struct tevent_queue *write_queue;
-};
-
-static struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
- const char *pipe_name,
- const struct tsocket_address *local_address,
- const struct tsocket_address *remote_address,
- struct auth_serversupplied_info *server_info)
-{
- struct np_proxy_state *result;
- char *socket_np_dir;
- const char *socket_dir;
- struct tevent_context *ev;
- struct tevent_req *subreq;
- struct netr_SamInfo3 *info3;
- NTSTATUS status;
- bool ok;
- int ret;
- int sys_errno;
-
- result = talloc(mem_ctx, struct np_proxy_state);
- if (result == NULL) {
- DEBUG(0, ("talloc failed\n"));
- return NULL;
- }
-
- result->read_queue = tevent_queue_create(result, "np_read");
- if (result->read_queue == NULL) {
- DEBUG(0, ("tevent_queue_create failed\n"));
- goto fail;
- }
-
- result->write_queue = tevent_queue_create(result, "np_write");
- if (result->write_queue == NULL) {
- DEBUG(0, ("tevent_queue_create failed\n"));
- goto fail;
- }
-
- ev = s3_tevent_context_init(talloc_tos());
- if (ev == NULL) {
- DEBUG(0, ("s3_tevent_context_init failed\n"));
- goto fail;
- }
-
- socket_dir = lp_parm_const_string(
- GLOBAL_SECTION_SNUM, "external_rpc_pipe", "socket_dir",
- get_dyn_NCALRPCDIR());
- if (socket_dir == NULL) {
- DEBUG(0, ("externan_rpc_pipe:socket_dir not set\n"));
- goto fail;
- }
- socket_np_dir = talloc_asprintf(talloc_tos(), "%s/np", socket_dir);
- if (socket_np_dir == NULL) {
- DEBUG(0, ("talloc_asprintf failed\n"));
- goto fail;
- }
-
- info3 = talloc_zero(talloc_tos(), struct netr_SamInfo3);
- if (info3 == NULL) {
- DEBUG(0, ("talloc failed\n"));
- goto fail;
- }
-
- status = serverinfo_to_SamInfo3(server_info, NULL, 0, info3);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(info3);
- DEBUG(0, ("serverinfo_to_SamInfo3 failed: %s\n",
- nt_errstr(status)));
- goto fail;
- }
-
- become_root();
- subreq = tstream_npa_connect_send(talloc_tos(), ev,
- socket_np_dir,
- pipe_name,
- remote_address, /* client_addr */
- NULL, /* client_name */
- local_address, /* server_addr */
- NULL, /* server_name */
- info3,
- server_info->user_session_key,
- data_blob_null /* delegated_creds */);
- if (subreq == NULL) {
- unbecome_root();
- DEBUG(0, ("tstream_npa_connect_send failed\n"));
- goto fail;
- }
- ok = tevent_req_poll(subreq, ev);
- unbecome_root();
- if (!ok) {
- DEBUG(0, ("tevent_req_poll failed for tstream_npa_connect: %s\n",
- strerror(errno)));
- goto fail;
-
- }
- ret = tstream_npa_connect_recv(subreq, &sys_errno,
- result,
- &result->npipe,
- &result->file_type,
- &result->device_state,
- &result->allocation_size);
- TALLOC_FREE(subreq);
- if (ret != 0) {
- DEBUG(0, ("tstream_npa_connect_recv failed: %s\n",
- strerror(sys_errno)));
- goto fail;
- }
-
- return result;
-
- fail:
- TALLOC_FREE(result);
- return NULL;
-}
-
NTSTATUS np_open(TALLOC_CTX *mem_ctx, const char *name,
const struct tsocket_address *local_address,
const struct tsocket_address *remote_address,
- struct auth_serversupplied_info *server_info,
+ struct auth_session_info *session_info,
+ struct messaging_context *msg_ctx,
struct fake_file_handle **phandle)
{
+ const char *rpcsrv_type;
const char **proxy_list;
struct fake_file_handle *handle;
+ bool external = false;
proxy_list = lp_parm_string_list(-1, "np", "proxy", NULL);
return NT_STATUS_NO_MEMORY;
}
+ /* Check what is the server type for this pipe.
+ Defaults to "embedded" */
+ rpcsrv_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
+ "rpc_server", name,
+ "embedded");
+ if (strcasecmp_m(rpcsrv_type, "embedded") != 0) {
+ external = true;
+ }
+
+ /* Still support the old method for defining external servers */
if ((proxy_list != NULL) && str_list_check_ci(proxy_list, name)) {
+ external = true;
+ }
+
+ if (external) {
struct np_proxy_state *p;
p = make_external_rpc_pipe_p(handle, name,
local_address,
remote_address,
- server_info);
+ session_info);
handle->type = FAKE_FILE_TYPE_NAMED_PIPE_PROXY;
handle->private_data = p;
} else {
struct pipes_struct *p;
struct ndr_syntax_id syntax;
- const char *client_address;
if (!is_known_pipename(name, &syntax)) {
TALLOC_FREE(handle);
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
- if (tsocket_address_is_inet(remote_address, "ip")) {
- client_address = tsocket_address_inet_addr_string(
- remote_address,
- talloc_tos());
- if (client_address == NULL) {
- TALLOC_FREE(handle);
- return NT_STATUS_NO_MEMORY;
- }
- } else {
- client_address = "";
- }
-
- p = make_internal_rpc_pipe_p(handle, &syntax, client_address,
- server_info);
+ p = make_internal_rpc_pipe_p(handle, &syntax, remote_address,
+ session_info, msg_ctx);
handle->type = FAKE_FILE_TYPE_NAMED_PIPE;
handle->private_data = p;
struct pipes_struct *p = talloc_get_type_abort(
handle->private_data, struct pipes_struct);
- state->nwritten = write_to_internal_pipe(p, (char *)data, len);
+ state->nwritten = write_to_internal_pipe(p, (const char *)data, len);
status = (state->nwritten >= 0)
? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
state->ev = ev;
state->p = p;
- state->iov.iov_base = CONST_DISCARD(void *, data);
+ state->iov.iov_base = discard_const_p(void, data);
state->iov.iov_len = len;
subreq = tstream_writev_queue_send(state, ev,
np_ipc_readv_next_vector,
&state->next_vector);
if (subreq == NULL) {
-
+ status = NT_STATUS_NO_MEMORY;
+ goto post_status;
}
tevent_req_set_callback(subreq, np_read_done, req);
return req;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
- *nread = state->nread;
- *is_data_outstanding = state->is_data_outstanding;
- return NT_STATUS_OK;
-}
-/**
- * @brief Create a new RPC client context which uses a local dispatch function.
- *
- * @param[in] conn The connection struct that will hold the pipe
- *
- * @param[out] spoolss_pipe A pointer to the connected rpc client pipe.
- *
- * @return NT_STATUS_OK on success, a corresponding NT status if an
- * error occured.
- */
-NTSTATUS rpc_connect_spoolss_pipe(connection_struct *conn,
- struct rpc_pipe_client **spoolss_pipe)
-{
- NTSTATUS status;
-
- /* TODO: check and handle disconnections */
+ DEBUG(10, ("Received %d bytes. There is %smore data outstanding\n",
+ (int)state->nread, state->is_data_outstanding?"":"no "));
- if (!conn->spoolss_pipe) {
- status = rpc_pipe_open_internal(conn,
- &ndr_table_spoolss.syntax_id,
- rpc_spoolss_dispatch,
- conn->server_info,
- &conn->spoolss_pipe);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
- }
-
- *spoolss_pipe = conn->spoolss_pipe;
+ *nread = state->nread;
+ *is_data_outstanding = state->is_data_outstanding;
return NT_STATUS_OK;
}
git.samba.org / idra / samba.git / blobdiff