libdsm/include/bdsm/netbios_ns.h

//---------------------------------------------------------------------------
//  __________________    _________  _____            _____  .__         ._.
//  \______   \______ \  /   _____/ /     \          /  _  \ |__| ____   | |
//   |    |  _/|    |  \ \_____  \ /  \ /  \        /  /_\  \|  _/ __ \  | |
//   |    |   \|    `   \/        /    Y    \      /    |    |  \  ___/   \|
//   |______  /_______  /_______  \____|__  / /\   \____|__  |__|\___ |   __
//          \/        \/        \/        \/  )/           \/        \/   \/
//
// This file is part of libdsm. Copyright © 2014 VideoLabs SAS
//
// Author: Julien 'Lta' BALLET <contact@lta.io>
//
// This program is free software. It comes without any warranty, to the extent
// permitted by applicable law. You can redistribute it and/or modify it under
// the terms of the Do What The Fuck You Want To Public License, Version 2, as
// published by Sam Hocevar. See the COPYING file for more details.
//----------------------------------------------------------------------------

#ifndef __BDSM_NETBIOS_NS_H_
#define __BDSM_NETBIOS_NS_H_

#include "bdsm/netbios_defs.h"
#include "bdsm/netbios_query.h"

#include <sys/socket.h>
#include <netinet/ip.h>
#include <netinet/udp.h>


typedef struct                netbios_ns_entry_s
{
  struct netbios_ns_entry_s     *next;
  struct in_addr                address;
  char                          name[NETBIOS_NAME_LENGTH + 2];
}                             netbios_ns_entry_t;

typedef struct {
  int                 socket;
  struct sockaddr_in  addr;
  uint16_t            last_trn_id;  // Last transaction id used;
  netbios_ns_entry_t  *entries;     // Only used during discovery;
}                   netbios_ns_t;

netbios_ns_t  *netbios_ns_new();
void          netbios_ns_destroy(netbios_ns_t *ns);
int           netbios_ns_resolve(netbios_ns_t *ns, const char *name, char type, uint32_t * addr);
int           netbios_ns_discover(netbios_ns_t *ns);
int           netbios_ns_inverse(netbios_ns_t *ns, netbios_ns_entry_t *entry);

int           netbios_ns_send_query(netbios_ns_t *ns, netbios_query_t *q,
                                    uint32_t ip);
ssize_t       netbios_ns_recv(int sock, void *buf, size_t buf_size,
                              struct timeval *timeout, struct sockaddr *addr,
                              socklen_t *addr_len);

// Remove all the entry from the name service
void                netbios_ns_entry_clear(netbios_ns_t *ns);
// Add an entry to the nameservice list with name and/or ip
netbios_ns_entry_t  *netbios_ns_entry_add(netbios_ns_t *ns, const char *name,
                                          uint32_t ip);
// Find an entry in the list. Search by name if name is not NULL,
// or by ip otherwise
netbios_ns_entry_t  *netbios_ns_entry_find(netbios_ns_t *ns, const char *by_name,
                                           uint32_t ip);

#endif