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+/*
+ 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_ */