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/*
Unix SMB/CIFS implementation.
a raw async NBT library
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.
*/
#include "librpc/gen_ndr/ndr_nbt.h"
/*
possible states for pending requests
*/
enum nbt_request_state {NBT_REQUEST_SEND,
NBT_REQUEST_WAIT,
NBT_REQUEST_DONE,
NBT_REQUEST_TIMEOUT,
NBT_REQUEST_ERROR};
/*
a nbt name request
*/
struct nbt_name_request {
struct nbt_name_request *next, *prev;
enum nbt_request_state state;
NTSTATUS status;
/* the socket this was on */
struct nbt_name_socket *nbtsock;
/* where to send the request */
const char *dest_addr;
int dest_port;
/* the timeout event */
struct timed_event *te;
/* the name transaction id */
uint16_t name_trn_id;
/* is it a reply? */
BOOL is_reply;
/* the encoded request */
DATA_BLOB encoded;
/* shall we allow multiple replies? */
BOOL allow_multiple_replies;
uint_t num_replies;
struct nbt_name_reply {
struct nbt_name_packet *packet;
const char *reply_addr;
int reply_port;
} *replies;
/* information on what to do on completion */
struct {
void (*fn)(struct nbt_name_request *);
void *private;
} async;
};
/*
context structure for operations on name queries
*/
struct nbt_name_socket {
struct socket_context *sock;
struct event_context *event_ctx;
/* a queue of requests pending to be sent */
struct nbt_name_request *send_queue;
/* the fd event */
struct fd_event *fde;
/* mapping from name_trn_id to pending event */
struct idr_context *idr;
/* how many requests are waiting for a reply */
uint16_t num_pending;
/* what to do with incoming request packets */
struct {
void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
const char *, int );
void *private;
} incoming;
};
/* a simple name query */
struct nbt_name_query {
struct {
struct nbt_name name;
const char *dest_addr;
BOOL broadcast;
BOOL wins_lookup;
int timeout; /* in seconds */
} in;
struct {
const char *reply_from;
struct nbt_name name;
int16_t num_addrs;
const char **reply_addrs;
} out;
};
/* a simple name status query */
struct nbt_name_status {
struct {
struct nbt_name name;
const char *dest_addr;
int timeout; /* in seconds */
} in;
struct {
const char *reply_from;
struct nbt_name name;
struct nbt_rdata_status status;
} out;
};
/* a name registration request */
struct nbt_name_register {
struct {
struct nbt_name name;
const char *dest_addr;
const char *address;
uint16_t nb_flags;
BOOL register_demand;
BOOL broadcast;
uint32_t ttl;
int timeout; /* in seconds */
} in;
struct {
const char *reply_from;
struct nbt_name name;
const char *reply_addr;
uint8_t rcode;
} out;
};
/* a send 3 times then demand name broadcast name registration */
struct nbt_name_register_bcast {
struct {
struct nbt_name name;
const char *dest_addr;
const char *address;
uint16_t nb_flags;
uint32_t ttl;
} in;
};
/* a name refresh request */
struct nbt_name_refresh {
struct {
struct nbt_name name;
const char *dest_addr;
const char *address;
uint16_t nb_flags;
BOOL broadcast;
uint32_t ttl;
int timeout; /* in seconds */
} in;
struct {
const char *reply_from;
struct nbt_name name;
const char *reply_addr;
uint8_t rcode;
} out;
};
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