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/*
Unix SMB/CIFS implementation.
Main winbindd server routines
Copyright (C) Stefan Metzmacher 2005
Copyright (C) Andrew Tridgell 2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define WINBINDD_DIR "/tmp/.winbindd/"
#define WINBINDD_SOCKET WINBINDD_DIR"socket"
/* the privileged socket is in smbd_tmp_dir() */
#define WINBINDD_PRIVILEGED_SOCKET "winbind_socket"
#define WINBINDD_SAMBA3_SOCKET WINBINDD_DIR"pipe"
/* the privileged socket is in smbd_tmp_dir() */
#define WINBINDD_SAMBA3_PRIVILEGED_SOCKET "winbind_pipe"
/* this struct stores global data for the winbind task */
struct wbsrv_service {
struct task_server *task;
};
/*
this is an abstraction for the actual protocol being used,
so that we can listen on different sockets with different protocols
e.g. the old samba3 protocol on one socket and a new protocol on another socket
*/
struct wbsrv_protocol_ops {
const char *name;
BOOL allow_pending_calls;
uint32_t (*packet_length)(DATA_BLOB blob);
NTSTATUS (*pull_request)(DATA_BLOB blob, TALLOC_CTX *mem_ctx, struct wbsrv_call **call);
NTSTATUS (*handle_call)(struct wbsrv_call *call);
NTSTATUS (*push_reply)(struct wbsrv_call *call, TALLOC_CTX *mem_ctx, DATA_BLOB *blob);
};
/*
state of a listen socket and it's protocol information
*/
struct wbsrv_listen_socket {
const char *socket_path;
struct wbsrv_service *service;
BOOL privileged;
const struct wbsrv_protocol_ops *ops;
};
/*
state of an open winbind connection
*/
struct wbsrv_connection {
/* stream connection we belong to */
struct stream_connection *conn;
/* the listening socket we belong to, it holds protocol hooks */
struct wbsrv_listen_socket *listen_socket;
/* storage for protocol specific data */
void *protocol_private_data;
/* the partial data we've receiced yet */
DATA_BLOB partial;
/* the amount that we used yet from the partial buffer */
uint32_t partial_read;
/* prevent loops when we use half async code, while processing a requuest */
BOOL processing;
/* how many calls are pending */
uint32_t pending_calls;
struct data_blob_list_item *send_queue;
};
/*
state of one request
NOTE about async replies:
if the backend wants to reply later:
- it should set the WBSRV_CALL_FLAGS_REPLY_ASYNC flag, and may set a talloc_destructor
on the this structure or on the private_data (if it's a talloc child of this structure),
so that wbsrv_terminate_connection called by another call clean up the whole connection
correct.
- When the backend is ready to reply it should call wbsrv_queue_reply(call),
wbsrv_queue_reply implies talloc_free(call), so the backend should use talloc_reference(call),
if it needs it later.
- If wbsrv_queue_reply doesn't return NT_STATUS_OK, the backend function should call,
wbsrv_terminate_connection(call->wbconn, nt_errstr(status));
return;
*/
struct wbsrv_call {
#define WBSRV_CALL_FLAGS_REPLY_ASYNC 0x00000001
uint32_t flags;
/* the backend should use this event context */
struct event_context *event_ctx;
/* the connection the call belongs to */
struct wbsrv_connection *wbconn;
/* storage for protocol specific data */
void *private_data;
};
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