Amiga Format CD 7/Amiga Format AFCD07 (Dec 1996, Issue 91).iso/serious/shareware/comms/non-internet/samba/source/nmblookup.c

C/C++ Source or Header | 1996-06-26 | 5KB | 218 lines

/*
   Unix SMB/Netbios implementation.
   Version 1.9.
   NBT client - used to lookup netbios names
   Copyright (C) Andrew Tridgell 1994-1995

   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.

*/

#ifdef SYSLOG
#undef SYSLOG
#endif

#include "includes.h"
#include "nameserv.h"

extern int DEBUGLEVEL;

extern pstring scope;

extern struct in_addr bcast_ip;
extern pstring myhostname;

static BOOL got_bcast = False;

int ServerFD= -1;

/****************************************************************************
  open the socket communication
  **************************************************************************/
static BOOL open_sockets(void)
{
  struct hostent *hp;

  /* get host info */
  if ((hp = Get_Hostbyname(myhostname)) == 0)
    {
      DEBUG(0,( "Get_Hostbyname: Unknown host. %s\n",myhostname));
      return False;
    }

  ServerFD = open_socket_in(SOCK_DGRAM, 0,3);

  if (ServerFD == -1)
    return(False);

  set_socket_options(ServerFD,"SO_BROADCAST");

  DEBUG(3, ("Socket opened.\n"));
  return True;
}


/****************************************************************************
  initialise connect, service and file structs
****************************************************************************/
static BOOL init_structs(void )
{
  struct in_addr myip;

  if (!get_myname(myhostname,&myip))
    return(False);

  /* Read the broadcast address from the interface */
  {
    struct in_addr ip0,ip2;

    ip0 = myip;

    if (!got_bcast) {
      get_broadcast(&ip0,&bcast_ip,&ip2);

      DEBUG(2,("Using broadcast %s\n",inet_ntoa(bcast_ip)));
    }
  }

  return True;
}

/****************************************************************************
usage on the program
****************************************************************************/
static void usage(void)
{
  printf("Usage: nmblookup [-M] [-B bcast address] [-d debuglevel] name\n");
  printf("Version %s\n",VERSION);
  printf("\t-d debuglevel         set the debuglevel\n");
  printf("\t-B broadcast address  the address to use for broadcasts\n");
  printf("\t-M                    searches for a master browser\n");
  printf("\t-S                    lookup node status as well\n");
  printf("\n");
}


/****************************************************************************
  main program
****************************************************************************/
int main(int argc,char *argv[])
{
  int opt;
  unsigned int lookup_type = 0x20;
  pstring lookup;
  extern int optind;
  extern char *optarg;
  BOOL find_master=False;
  BOOL find_status=False;
  int i;

  DEBUGLEVEL = 1;
  *lookup = 0;

  TimeInit();

  setup_logging(argv[0],True);

  charset_initialise();

  while ((opt = getopt(argc, argv, "p:d:B:i:SMh")) != EOF)
    switch (opt)
      {
      case 'B':
    {
      unsigned long a = interpret_addr(optarg);
      putip((char *)&bcast_ip,(char *)&a);
      got_bcast = True;
    }
    break;
      case 'i':
    strcpy(scope,optarg);
    strupper(scope);
    break;
      case 'M':
    find_master = True;
    break;
      case 'S':
    find_status = True;
    break;
      case 'd':
    DEBUGLEVEL = atoi(optarg);
    break;
      case 'h':
    usage();
    exit(0);
    break;
      default:
    usage();
    exit(1);
      }

  if (argc < 2) {
    usage();
    exit(1);
  }

  init_structs();
  if (!open_sockets()) return(1);

  DEBUG(1,("Sending queries to %s\n",inet_ntoa(bcast_ip)));


  for (i=optind;i<argc;i++)
    {
      BOOL bcast = True;
      int retries = 2;
      char *p;
      struct in_addr ip;

      strcpy(lookup,argv[i]);

      if (find_master) {
    if (*lookup == '-') {
      strcpy(lookup,"\01\02__MSBROWSE__\02");
      lookup_type = 1;
    } else {
      lookup_type = 0x1d;
    }
      }

      p = strchr(lookup,'#');

      if (p) {
    *p = 0;
    sscanf(p+1,"%x",&lookup_type);
    bcast = False;
    retries = 1;
      }

      if (name_query(ServerFD,lookup,lookup_type,bcast,True,
             bcast_ip,&ip,NULL))
    {
      printf("%s %s\n",inet_ntoa(ip),lookup);
      if (find_status)
        {
          printf("Looking up status of %s\n",inet_ntoa(ip));
          name_status(ServerFD,lookup,lookup_type,True,ip,NULL,NULL,NULL);
          printf("\n");
        }
      } else {
    printf("couldn't find name %s\n",lookup);
      }
    }

  return(0);
}