s3-rpc_server: Move pipe/handles functions

Put InternalPipes related functions in rpc_handles.c and out of rpc_ncacn_np.c
rpc_handles.c is the only file that really uses them after all and ncacn_np.c
is the wrong place for that stuff.
While ther remove unnecessary wrapper functions now that the InternalPipes
static variable is directly accessible.

Also move all pipes_struct related header stuff in its own rpc_pipes.h header.

Signed-off-by: Andreas Schneider <asn@samba.org>

1 files changed, 213 insertions, 0 deletions

diff --git a/source3/rpc_server/rpc_pipes.h b/source3/rpc_server/rpc_pipes.h
new file mode 100644
index 0000000000..9315830351
--- /dev/null
+++ b/source3/rpc_server/rpc_pipes.h
@@ -0,0 +1,213 @@
+/*
+   Unix SMB/Netbios implementation.
+   RPC Server Headers
+   Copyright (C) Andrew Tridgell 1992-1997
+   Copyright (C) Luke Kenneth Casson Leighton 1996-1997
+   Copyright (C) Paul Ashton 1997
+   Copyright (C) Jeremy Allison 2000-2004
+   Copyright (C) Simo Sorce 2010-2011
+
+   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_PIPES_H_
+#define _RPC_PIPES_H_
+
+#include "librpc/rpc/dcerpc.h"
+
+typedef struct _output_data {
+	/*
+	 * Raw RPC output data. This does not include RPC headers or footers.
+	 */
+	DATA_BLOB rdata;
+
+	/* The amount of data sent from the current rdata struct. */
+	uint32 data_sent_length;
+
+	/*
+	 * The current fragment being returned. This inclues
+	 * headers, data and authentication footer.
+	 */
+	DATA_BLOB frag;
+
+	/* The amount of data sent from the current PDU. */
+	uint32 current_pdu_sent;
+} output_data;
+
+typedef struct _input_data {
+	/*
+	 * This is the current incoming pdu. The data here
+	 * is collected via multiple writes until a complete
+	 * pdu is seen, then the data is copied into the in_data
+	 * structure. The maximum size of this is 0x1630 (RPC_MAX_PDU_FRAG_LEN).
+	 * If length is zero, then we are at the start of a new
+	 * pdu.
+	 */
+	DATA_BLOB pdu;
+
+	/*
+	 * The amount of data needed to complete the in_pdu.
+	 * If this is zero, then we are at the start of a new
+	 * pdu.
+	 */
+	uint32 pdu_needed_len;
+
+	/*
+	 * This is the collection of input data with all
+	 * the rpc headers and auth footers removed.
+	 * The maximum length of this (1Mb) is strictly enforced.
+	 */
+	DATA_BLOB data;
+
+} input_data;
+
+struct dcesrv_ep_entry_list;
+struct tsocket_address;
+struct handle_list;
+struct pipes_struct;
+
+struct api_struct {
+	const char *name;
+	uint8 opnum;
+	bool (*fn) (struct pipes_struct *);
+};
+
+struct pipe_rpc_fns {
+
+	struct pipe_rpc_fns *next, *prev;
+
+	/* RPC function table associated with the current rpc_bind (associated by context) */
+
+	const struct api_struct *cmds;
+	int n_cmds;
+	uint32_t context_id;
+	struct ndr_syntax_id syntax;
+
+};
+
+/*
+ * DCE/RPC-specific samba-internal-specific handling of data on
+ * NamedPipes.
+ */
+struct pipes_struct {
+	struct pipes_struct *next, *prev;
+
+	const struct tsocket_address *local_address;
+	const struct tsocket_address *remote_address;
+
+	enum dcerpc_transport_t transport;
+
+	struct auth_session_info *session_info;
+	struct messaging_context *msg_ctx;
+
+	struct dcesrv_ep_entry_list *ep_entries;
+
+	/* linked list of rpc dispatch tables associated 
+	   with the open rpc contexts */
+
+	struct pipe_rpc_fns *contexts;
+
+	struct pipe_auth_data auth;
+
+	bool ncalrpc_as_system;
+
+	/*
+	 * Set to true when an RPC bind has been done on this pipe.
+	 */
+
+	bool pipe_bound;
+
+	/*
+	 * Set to true when we should return fault PDU's for everything.
+	 */
+
+	bool fault_state;
+
+	/*
+	 * Set to true when we should return fault PDU's for a bad handle.
+	 */
+
+	bool bad_handle_fault_state;
+
+	/*
+	 * Set to true when the backend does not support a call.
+	 */
+
+	bool rng_fault_state;
+
+	/*
+	 * Set to RPC_BIG_ENDIAN when dealing with big-endian PDU's
+	 */
+
+	bool endian;
+
+	/*
+	 * Struct to deal with multiple pdu inputs.
+	 */
+
+	input_data in_data;
+
+	/*
+	 * Struct to deal with multiple pdu outputs.
+	 */
+
+	output_data out_data;
+
+	/* This context is used for PDU data and is freed between each pdu.
+		Don't use for pipe state storage. */
+	TALLOC_CTX *mem_ctx;
+
+	/* handle database to use on this pipe. */
+	struct handle_list *pipe_handles;
+
+	/* call id retrieved from the pdu header */
+	uint32_t call_id;
+
+	/* operation number retrieved from the rpc header */
+	uint16_t opnum;
+
+	/* private data for the interface implementation */
+	void *private_data;
+
+};
+
+bool check_open_pipes(void);
+int close_internal_rpc_pipe_hnd(struct pipes_struct *p);
+
+size_t num_pipe_handles(struct pipes_struct *p);
+bool init_pipe_handles(struct pipes_struct *p, const struct ndr_syntax_id *syntax);
+bool create_policy_hnd(struct pipes_struct *p, struct policy_handle *hnd, void *data_ptr);
+bool find_policy_by_hnd(struct pipes_struct *p, const struct policy_handle *hnd,
+			void **data_p);
+bool close_policy_hnd(struct pipes_struct *p, struct policy_handle *hnd);
+void close_policy_by_pipe(struct pipes_struct *p);
+bool pipe_access_check(struct pipes_struct *p);
+
+void *_policy_handle_create(struct pipes_struct *p, struct policy_handle *hnd,
+			    uint32_t access_granted, size_t data_size,
+			    const char *type, NTSTATUS *pstatus);
+#define policy_handle_create(_p, _hnd, _access, _type, _pstatus) \
+	(_type *)_policy_handle_create((_p), (_hnd), (_access), sizeof(_type), #_type, \
+				       (_pstatus))
+
+void *_policy_handle_find(struct pipes_struct *p,
+			  const struct policy_handle *hnd,
+			  uint32_t access_required, uint32_t *paccess_granted,
+			  const char *name, const char *location,
+			  NTSTATUS *pstatus);
+#define policy_handle_find(_p, _hnd, _access_required, _access_granted, _type, _pstatus) \
+	(_type *)_policy_handle_find((_p), (_hnd), (_access_required), \
+				     (_access_granted), #_type, __location__, (_pstatus))
+
+#endif /* _RPC_PIPES_H_ */