s3-dcerpc: Move mere processing functions from srv_pipe_hnd.c to srv_pipe.c

1 files changed, 1 insertions, 463 deletions

diff --git a/source3/rpc_server/srv_pipe_hnd.c b/source3/rpc_server/srv_pipe_hnd.c
index 51f30cea25..5032020acb 100644
--- a/source3/rpc_server/srv_pipe_hnd.c
+++ b/source3/rpc_server/srv_pipe_hnd.c
@@ -26,45 +26,12 @@
 #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.
 ****************************************************************************/
 
@@ -154,435 +121,6 @@ static void free_pipe_context(pipes_struct *p)
 }
 
 /****************************************************************************
- 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.
 ****************************************************************************/