--- /dev/null
+/*
+ * RPC Pipe server helper headers
+ * Almost completely rewritten by (C) Jeremy Allison 2005 - 2010
+ * Copyright (C) Simo Sorce <idra@samba.org> - 2010
+ *
+ * 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/>.
+ */
+
+#ifndef _RPC_SERVER_H_
+#define _RPC_SERVER_H_
+
+void set_incoming_fault(pipes_struct *p);
+void process_complete_pdu(pipes_struct *p);
+
+#endif /* _PRC_SERVER_H_ */
#include "../libcli/auth/schannel.h"
#include "../libcli/auth/spnego.h"
#include "../libcli/auth/ntlmssp.h"
+#include "rpc_server.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
return True;
}
+
+/****************************************************************************
+ 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;
+
+ data_blob_free(&o_data->frag);
+
+ /* Free any memory in the current return data buffer. */
+ data_blob_free(&o_data->rdata);
+
+ return True;
+}
+
+/****************************************************************************
+ Sets the fault state on incoming packets.
+****************************************************************************/
+
+void set_incoming_fault(pipes_struct *p)
+{
+ data_blob_free(&p->in_data.data);
+ p->in_data.pdu_needed_len = 0;
+ p->in_data.pdu.length = 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)));
+}
+
+static bool dcesrv_auth_request(pipes_struct *p, struct ncacn_packet *pkt)
+{
+ NTSTATUS status;
+ size_t hdr_size = DCERPC_REQUEST_LENGTH;
+ struct dcerpc_auth auth;
+ uint32_t auth_length;
+ DATA_BLOB data;
+ DATA_BLOB full_pkt;
+
+ DEBUG(10, ("Checking request auth.\n"));
+
+ if (pkt->pfc_flags & DCERPC_PFC_FLAG_OBJECT_UUID) {
+ hdr_size += 16;
+ }
+
+ switch (p->auth.auth_level) {
+ case DCERPC_AUTH_LEVEL_PRIVACY:
+ DEBUG(10, ("Requested Privacy.\n"));
+ break;
+
+ case DCERPC_AUTH_LEVEL_INTEGRITY:
+ DEBUG(10, ("Requested Integrity.\n"));
+ break;
+
+ case DCERPC_AUTH_LEVEL_CONNECT:
+ if (pkt->auth_length != 0) {
+ break;
+ }
+ return true;
+ case DCERPC_AUTH_LEVEL_NONE:
+ if (pkt->auth_length != 0) {
+ return false;
+ }
+ return true;
+
+ default:
+ return false;
+ }
+
+ status = dcerpc_pull_auth_trailer(pkt, pkt,
+ &pkt->u.request.stub_and_verifier,
+ &auth, &auth_length, false);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+
+ pkt->u.request.stub_and_verifier.length -= auth_length;
+
+ data.data = p->in_data.pdu.data + hdr_size;
+ data.length = pkt->u.request.stub_and_verifier.length;
+ full_pkt.data = p->in_data.pdu.data;
+ full_pkt.length = p->in_data.pdu.length - auth.credentials.length;
+
+ switch (p->auth.auth_type) {
+ case PIPE_AUTH_TYPE_NONE:
+ return true;
+
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ case PIPE_AUTH_TYPE_NTLMSSP:
+
+ DEBUG(10, ("NTLMSSP auth\n"));
+
+ if (!p->auth.a_u.auth_ntlmssp_state) {
+ DEBUG(0, ("Invalid auth level, "
+ "failed to process packet auth.\n"));
+ return false;
+ }
+
+ switch (p->auth.auth_level) {
+ case DCERPC_AUTH_LEVEL_PRIVACY:
+ status = auth_ntlmssp_unseal_packet(
+ p->auth.a_u.auth_ntlmssp_state,
+ data.data, data.length,
+ full_pkt.data, full_pkt.length,
+ &auth.credentials);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+ memcpy(pkt->u.request.stub_and_verifier.data,
+ data.data, data.length);
+ break;
+
+ case DCERPC_AUTH_LEVEL_INTEGRITY:
+ status = auth_ntlmssp_check_packet(
+ p->auth.a_u.auth_ntlmssp_state,
+ data.data, data.length,
+ full_pkt.data, full_pkt.length,
+ &auth.credentials);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+ break;
+
+ default:
+ DEBUG(0, ("Invalid auth level, "
+ "failed to process packet auth.\n"));
+ return false;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_SCHANNEL:
+
+ DEBUG(10, ("SCHANNEL auth\n"));
+
+ switch (p->auth.auth_level) {
+ case DCERPC_AUTH_LEVEL_PRIVACY:
+ status = netsec_incoming_packet(
+ p->auth.a_u.schannel_auth,
+ pkt, true,
+ data.data, data.length,
+ &auth.credentials);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+ memcpy(pkt->u.request.stub_and_verifier.data,
+ data.data, data.length);
+ break;
+
+ case DCERPC_AUTH_LEVEL_INTEGRITY:
+ status = netsec_incoming_packet(
+ p->auth.a_u.schannel_auth,
+ pkt, false,
+ data.data, data.length,
+ &auth.credentials);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+ break;
+
+ default:
+ DEBUG(0, ("Invalid auth level, "
+ "failed to process packet auth.\n"));
+ 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;
+ }
+
+ /* remove the indicated amount of padding */
+ if (pkt->u.request.stub_and_verifier.length < auth.auth_pad_length) {
+ return false;
+ }
+ pkt->u.request.stub_and_verifier.length -= auth.auth_pad_length;
+
+ return 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, struct ncacn_packet *pkt)
+{
+ DATA_BLOB data;
+
+ if (!p->pipe_bound) {
+ DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
+ set_incoming_fault(p);
+ return False;
+ }
+
+ /* Store the opnum */
+ p->opnum = pkt->u.request.opnum;
+
+ if (!dcesrv_auth_request(p, pkt)) {
+ DEBUG(0,("Failed to check packet auth.\n"));
+ set_incoming_fault(p);
+ return false;
+ }
+
+ data = pkt->u.request.stub_and_verifier;
+
+ /*
+ * 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 (p->in_data.data.length + data.length > MAX_RPC_DATA_SIZE) {
+ DEBUG(0, ("process_request_pdu: "
+ "rpc data buffer too large (%u) + (%u)\n",
+ (unsigned int)p->in_data.data.length,
+ (unsigned int)data.length));
+ set_incoming_fault(p);
+ return False;
+ }
+
+ /*
+ * Append the data portion into the buffer and return.
+ */
+
+ if (data.length) {
+ if (!data_blob_append(p->mem_ctx, &p->in_data.data,
+ data.data, data.length)) {
+ DEBUG(0, ("Unable to append data size %u "
+ "to parse buffer of size %u.\n",
+ (unsigned int)data.length,
+ (unsigned int)p->in_data.data.length));
+ set_incoming_fault(p);
+ return False;
+ }
+ }
+
+ if (pkt->pfc_flags & DCERPC_PFC_FLAG_LAST) {
+ bool ret = False;
+ /*
+ * Ok - we finally have a complete RPC stream.
+ * Call the rpc command to process it.
+ */
+
+ /*
+ * Process the complete data stream here.
+ */
+ if (pipe_init_outgoing_data(p)) {
+ ret = api_pipe_request(p, pkt);
+ }
+
+ return ret;
+ }
+
+ return True;
+}
+
+/****************************************************************************
+ Processes a finished PDU stored in p->in_data.pdu.
+****************************************************************************/
+
+void process_complete_pdu(pipes_struct *p)
+{
+ struct ncacn_packet *pkt = NULL;
+ NTSTATUS status;
+ 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)));
+ goto done;
+ }
+
+ pkt = talloc(p->mem_ctx, struct ncacn_packet);
+ if (!pkt) {
+ DEBUG(0, ("Out of memory!\n"));
+ goto done;
+ }
+
+ /*
+ * Ensure we're using the corrent endianness for both the
+ * RPC header flags and the raw data we will be reading from.
+ */
+ if (dcerpc_get_endian_flag(&p->in_data.pdu) & DCERPC_DREP_LE) {
+ p->endian = RPC_LITTLE_ENDIAN;
+ } else {
+ p->endian = RPC_BIG_ENDIAN;
+ }
+ DEBUG(10, ("PDU is in %s Endian format!\n", p->endian?"Big":"Little"));
+
+ status = dcerpc_pull_ncacn_packet(pkt, &p->in_data.pdu,
+ pkt, p->endian);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to unmarshal rpc packet: %s!\n",
+ nt_errstr(status)));
+ goto done;
+ }
+
+ /* Store the call_id */
+ p->call_id = pkt->call_id;
+
+ DEBUG(10, ("Processing packet type %d\n", (int)pkt->ptype));
+
+ switch (pkt->ptype) {
+ case DCERPC_PKT_REQUEST:
+ reply = process_request_pdu(p, pkt);
+ break;
+
+ case DCERPC_PKT_PING: /* CL request - ignore... */
+ DEBUG(0, ("process_complete_pdu: Error. "
+ "Connectionless packet type %d received on "
+ "pipe %s.\n", (int)pkt->ptype,
+ 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)pkt->ptype,
+ 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, pkt);
+ }
+ 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)pkt->ptype,
+ 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, pkt);
+ }
+ 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, pkt);
+ }
+ 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 outstanding callid matches. */
+ 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, pkt);
+ }
+ 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)pkt->ptype));
+ break;
+ }
+
+done:
+ 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));
+ TALLOC_FREE(pkt);
+ } else {
+ /*
+ * Reset the lengths. We're ready for a new pdu.
+ */
+ TALLOC_FREE(p->in_data.pdu.data);
+ p->in_data.pdu_needed_len = 0;
+ p->in_data.pdu.length = 0;
+ }
+
+ TALLOC_FREE(pkt);
+}
+
#include "../libcli/auth/schannel.h"
#include "../libcli/auth/spnego.h"
#include "../libcli/auth/ntlmssp.h"
+#include "rpc_server.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;
-
- data_blob_free(&o_data->frag);
-
- /* Free any memory in the current return data buffer. */
- data_blob_free(&o_data->rdata);
-
- return True;
-}
-
-/****************************************************************************
- Sets the fault state on incoming packets.
-****************************************************************************/
-
-static void set_incoming_fault(pipes_struct *p)
-{
- data_blob_free(&p->in_data.data);
- p->in_data.pdu_needed_len = 0;
- p->in_data.pdu.length = 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.
****************************************************************************/
talloc_free_children(p->mem_ctx);
}
-/****************************************************************************
- 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 dcesrv_auth_request(pipes_struct *p, struct ncacn_packet *pkt)
-{
- NTSTATUS status;
- size_t hdr_size = DCERPC_REQUEST_LENGTH;
- struct dcerpc_auth auth;
- uint32_t auth_length;
- DATA_BLOB data;
- DATA_BLOB full_pkt;
-
- DEBUG(10, ("Checking request auth.\n"));
-
- if (pkt->pfc_flags & DCERPC_PFC_FLAG_OBJECT_UUID) {
- hdr_size += 16;
- }
-
- switch (p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- DEBUG(10, ("Requested Privacy.\n"));
- break;
-
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- DEBUG(10, ("Requested Integrity.\n"));
- break;
-
- case DCERPC_AUTH_LEVEL_CONNECT:
- if (pkt->auth_length != 0) {
- break;
- }
- return true;
- case DCERPC_AUTH_LEVEL_NONE:
- if (pkt->auth_length != 0) {
- return false;
- }
- return true;
-
- default:
- return false;
- }
-
- status = dcerpc_pull_auth_trailer(pkt, pkt,
- &pkt->u.request.stub_and_verifier,
- &auth, &auth_length, false);
- if (!NT_STATUS_IS_OK(status)) {
- return false;
- }
-
- pkt->u.request.stub_and_verifier.length -= auth_length;
-
- data.data = p->in_data.pdu.data + hdr_size;
- data.length = pkt->u.request.stub_and_verifier.length;
- full_pkt.data = p->in_data.pdu.data;
- full_pkt.length = p->in_data.pdu.length - auth.credentials.length;
-
- switch (p->auth.auth_type) {
- case PIPE_AUTH_TYPE_NONE:
- return true;
-
- case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
- case PIPE_AUTH_TYPE_NTLMSSP:
-
- DEBUG(10, ("NTLMSSP auth\n"));
-
- if (!p->auth.a_u.auth_ntlmssp_state) {
- DEBUG(0, ("Invalid auth level, "
- "failed to process packet auth.\n"));
- return false;
- }
-
- switch (p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- status = auth_ntlmssp_unseal_packet(
- p->auth.a_u.auth_ntlmssp_state,
- data.data, data.length,
- full_pkt.data, full_pkt.length,
- &auth.credentials);
- if (!NT_STATUS_IS_OK(status)) {
- return false;
- }
- memcpy(pkt->u.request.stub_and_verifier.data,
- data.data, data.length);
- break;
-
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- status = auth_ntlmssp_check_packet(
- p->auth.a_u.auth_ntlmssp_state,
- data.data, data.length,
- full_pkt.data, full_pkt.length,
- &auth.credentials);
- if (!NT_STATUS_IS_OK(status)) {
- return false;
- }
- break;
-
- default:
- DEBUG(0, ("Invalid auth level, "
- "failed to process packet auth.\n"));
- return false;
- }
- break;
-
- case PIPE_AUTH_TYPE_SCHANNEL:
-
- DEBUG(10, ("SCHANNEL auth\n"));
-
- switch (p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- status = netsec_incoming_packet(
- p->auth.a_u.schannel_auth,
- pkt, true,
- data.data, data.length,
- &auth.credentials);
- if (!NT_STATUS_IS_OK(status)) {
- return false;
- }
- memcpy(pkt->u.request.stub_and_verifier.data,
- data.data, data.length);
- break;
-
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- status = netsec_incoming_packet(
- p->auth.a_u.schannel_auth,
- pkt, false,
- data.data, data.length,
- &auth.credentials);
- if (!NT_STATUS_IS_OK(status)) {
- return false;
- }
- break;
-
- default:
- DEBUG(0, ("Invalid auth level, "
- "failed to process packet auth.\n"));
- 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;
- }
-
- /* remove the indicated amount of padding */
- if (pkt->u.request.stub_and_verifier.length < auth.auth_pad_length) {
- return false;
- }
- pkt->u.request.stub_and_verifier.length -= auth.auth_pad_length;
-
- return true;
-}
-
-static bool process_request_pdu(pipes_struct *p, struct ncacn_packet *pkt)
-{
- DATA_BLOB data;
-
- if (!p->pipe_bound) {
- DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
- set_incoming_fault(p);
- return False;
- }
-
- /* Store the opnum */
- p->opnum = pkt->u.request.opnum;
-
- if (!dcesrv_auth_request(p, pkt)) {
- DEBUG(0,("Failed to check packet auth.\n"));
- set_incoming_fault(p);
- return false;
- }
-
- data = pkt->u.request.stub_and_verifier;
-
- /*
- * 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 (p->in_data.data.length + data.length > MAX_RPC_DATA_SIZE) {
- DEBUG(0, ("process_request_pdu: "
- "rpc data buffer too large (%u) + (%u)\n",
- (unsigned int)p->in_data.data.length,
- (unsigned int)data.length));
- set_incoming_fault(p);
- return False;
- }
-
- /*
- * Append the data portion into the buffer and return.
- */
-
- if (data.length) {
- if (!data_blob_append(p->mem_ctx, &p->in_data.data,
- data.data, data.length)) {
- DEBUG(0, ("Unable to append data size %u "
- "to parse buffer of size %u.\n",
- (unsigned int)data.length,
- (unsigned int)p->in_data.data.length));
- set_incoming_fault(p);
- return False;
- }
- }
-
- if (pkt->pfc_flags & DCERPC_PFC_FLAG_LAST) {
- bool ret = False;
- /*
- * Ok - we finally have a complete RPC stream.
- * Call the rpc command to process it.
- */
-
- /*
- * Process the complete data stream here.
- */
- if (pipe_init_outgoing_data(p)) {
- ret = api_pipe_request(p, pkt);
- }
-
- return ret;
- }
-
- return True;
-}
-
-/****************************************************************************
- Processes a finished PDU stored in p->in_data.pdu.
-****************************************************************************/
-
-static void process_complete_pdu(pipes_struct *p)
-{
- struct ncacn_packet *pkt = NULL;
- NTSTATUS status;
- 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)));
- goto done;
- }
-
- pkt = talloc(p->mem_ctx, struct ncacn_packet);
- if (!pkt) {
- DEBUG(0, ("Out of memory!\n"));
- goto done;
- }
-
- /*
- * Ensure we're using the corrent endianness for both the
- * RPC header flags and the raw data we will be reading from.
- */
- if (dcerpc_get_endian_flag(&p->in_data.pdu) & DCERPC_DREP_LE) {
- p->endian = RPC_LITTLE_ENDIAN;
- } else {
- p->endian = RPC_BIG_ENDIAN;
- }
- DEBUG(10, ("PDU is in %s Endian format!\n", p->endian?"Big":"Little"));
-
- status = dcerpc_pull_ncacn_packet(pkt, &p->in_data.pdu,
- pkt, p->endian);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to unmarshal rpc packet: %s!\n",
- nt_errstr(status)));
- goto done;
- }
-
- /* Store the call_id */
- p->call_id = pkt->call_id;
-
- DEBUG(10, ("Processing packet type %d\n", (int)pkt->ptype));
-
- switch (pkt->ptype) {
- case DCERPC_PKT_REQUEST:
- reply = process_request_pdu(p, pkt);
- break;
-
- case DCERPC_PKT_PING: /* CL request - ignore... */
- DEBUG(0, ("process_complete_pdu: Error. "
- "Connectionless packet type %d received on "
- "pipe %s.\n", (int)pkt->ptype,
- 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)pkt->ptype,
- 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, pkt);
- }
- 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)pkt->ptype,
- 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, pkt);
- }
- 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, pkt);
- }
- 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 outstanding callid matches. */
- 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, pkt);
- }
- 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)pkt->ptype));
- break;
- }
-
-done:
- 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));
- TALLOC_FREE(pkt);
- } else {
- /*
- * Reset the lengths. We're ready for a new pdu.
- */
- TALLOC_FREE(p->in_data.pdu.data);
- p->in_data.pdu_needed_len = 0;
- p->in_data.pdu.length = 0;
- }
-
- TALLOC_FREE(pkt);
-}
-
/****************************************************************************
Accepts incoming data on an rpc pipe. Processes the data in pdu sized units.
****************************************************************************/
git.samba.org / amitay / samba.git / commitdiff