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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_t 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_t 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_t 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_t 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;
/*
* shall we allow "connect" auth level for this interface ?
*/
bool allow_connect;
/*
* minimal required auth level
*/
enum dcerpc_AuthLevel min_auth_level;
};
/*
* 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;
/*
* Set to true when an RPC bind has been done on this pipe.
*/
bool pipe_bound;
/*
* States we can be in.
*/
bool allow_alter;
bool allow_bind;
bool allow_auth3;
/*
* Set the DCERPC_FAULT to return.
*/
int 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;
/* rpc header information to check fragments for consistency */
struct dcerpc_sec_vt_header2 header2;
/* private data for the interface implementation */
void *private_data;
};
int make_base_pipes_struct(TALLOC_CTX *mem_ctx,
struct messaging_context *msg_ctx,
const char *pipe_name,
enum dcerpc_transport_t transport,
bool endian,
const struct tsocket_address *remote_address,
const struct tsocket_address *local_address,
struct pipes_struct **_p);
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_ */
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