mirror of
https://github.com/samba-team/samba.git
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8e4ab747b0
(This used to be commit 4cf3839b72
)
339 lines
9.4 KiB
C
339 lines
9.4 KiB
C
/*
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Unix SMB/CIFS implementation.
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NBT client - used to lookup netbios names
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Copyright (C) Andrew Tridgell 1994-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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extern BOOL AllowDebugChange;
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static BOOL give_flags = False;
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static BOOL use_bcast = True;
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static BOOL got_bcast = False;
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static struct in_addr bcast_addr;
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static BOOL recursion_desired = False;
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static BOOL translate_addresses = False;
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static int ServerFD= -1;
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static int RootPort = False;
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static BOOL find_status=False;
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/****************************************************************************
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open the socket communication
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**************************************************************************/
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static BOOL open_sockets(void)
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{
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ServerFD = open_socket_in( SOCK_DGRAM,
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(RootPort ? 137 : 0),
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(RootPort ? 0 : 3),
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interpret_addr(lp_socket_address()), True );
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if (ServerFD == -1)
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return(False);
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set_socket_options( ServerFD, "SO_BROADCAST" );
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DEBUG(3, ("Socket opened.\n"));
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return True;
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}
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/****************************************************************************
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usage on the program
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****************************************************************************/
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static void usage(void)
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{
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d_printf("Usage: nmblookup [options] name\n");
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d_printf("Version %s\n",VERSION);
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d_printf("\t-d debuglevel set the debuglevel\n");
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d_printf("\t-B broadcast address the address to use for broadcasts\n");
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d_printf("\t-f list the NMB flags returned\n");
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d_printf("\t-U unicast address the address to use for unicast\n");
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d_printf("\t-M searches for a master browser\n");
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d_printf("\t-R set recursion desired in packet\n");
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d_printf("\t-S lookup node status as well\n");
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d_printf("\t-T translate IP addresses into names\n");
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d_printf("\t-r Use root port 137 (Win95 only replies to this)\n");
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d_printf("\t-A Do a node status on <name> as an IP Address\n");
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d_printf("\t-i NetBIOS scope Use the given NetBIOS scope for name queries\n");
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d_printf("\t-s smb.conf file Use the given path to the smb.conf file\n");
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d_printf("\t-h Print this help message.\n");
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d_printf("\n If you specify -M and name is \"-\", nmblookup looks up __MSBROWSE__<01>\n");
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d_printf("\n");
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}
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/****************************************************************************
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turn a node status flags field into a string
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****************************************************************************/
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static char *node_status_flags(unsigned char flags)
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{
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static fstring ret;
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fstrcpy(ret,"");
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fstrcat(ret, (flags & 0x80) ? "<GROUP> " : " ");
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if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
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if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
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if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
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if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
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if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
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if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
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if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
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if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
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return ret;
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}
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/****************************************************************************
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turn the NMB Query flags into a string
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****************************************************************************/
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static char *query_flags(int flags)
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{
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static fstring ret1;
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fstrcpy(ret1, "");
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if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
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if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
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if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
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if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
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if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
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if (flags & NM_FLAGS_B) fstrcat(ret1, "Broadcast ");
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return ret1;
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}
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/****************************************************************************
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do a node status query
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****************************************************************************/
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static void do_node_status(int fd, const char *name, int type, struct in_addr ip)
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{
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struct nmb_name nname;
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int count, i, j;
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struct node_status *status;
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fstring cleanname;
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d_printf("Looking up status of %s\n",inet_ntoa(ip));
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make_nmb_name(&nname, name, type);
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status = node_status_query(fd,&nname,ip, &count);
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if (status) {
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for (i=0;i<count;i++) {
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fstrcpy(cleanname, status[i].name);
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for (j=0;cleanname[j];j++) {
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if (!isprint((int)cleanname[j])) cleanname[j] = '.';
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}
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d_printf("\t%-15s <%02x> - %s\n",
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cleanname,status[i].type,
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node_status_flags(status[i].flags));
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}
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SAFE_FREE(status);
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}
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d_printf("\n");
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}
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/****************************************************************************
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send out one query
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****************************************************************************/
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static BOOL query_one(const char *lookup, unsigned int lookup_type)
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{
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int j, count, flags = 0;
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struct in_addr *ip_list=NULL;
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if (got_bcast) {
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d_printf("querying %s on %s\n", lookup, inet_ntoa(bcast_addr));
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ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
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use_bcast?True:recursion_desired,
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bcast_addr,&count, &flags, NULL);
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} else {
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struct in_addr *bcast;
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for (j=iface_count() - 1;
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!ip_list && j >= 0;
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j--) {
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bcast = iface_n_bcast(j);
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d_printf("querying %s on %s\n",
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lookup, inet_ntoa(*bcast));
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ip_list = name_query(ServerFD,lookup,lookup_type,
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use_bcast,
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use_bcast?True:recursion_desired,
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*bcast,&count, &flags, NULL);
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}
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}
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if (!ip_list) return False;
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if (give_flags)
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d_printf("Flags: %s\n", query_flags(flags));
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for (j=0;j<count;j++) {
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if (translate_addresses) {
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struct hostent *host = gethostbyaddr((char *)&ip_list[j], sizeof(ip_list[j]), AF_INET);
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if (host) {
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d_printf("%s, ", host -> h_name);
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}
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}
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d_printf("%s %s<%02x>\n",inet_ntoa(ip_list[j]),lookup, lookup_type);
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}
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/* We can only do find_status if the ip address returned
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was valid - ie. name_query returned true.
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*/
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if (find_status) {
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do_node_status(ServerFD, lookup, lookup_type, ip_list[0]);
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}
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safe_free(ip_list);
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return (ip_list != NULL);
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}
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/****************************************************************************
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main program
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****************************************************************************/
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int main(int argc,char *argv[])
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{
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int opt;
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unsigned int lookup_type = 0x0;
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fstring lookup;
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extern int optind;
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extern char *optarg;
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BOOL find_master=False;
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int i;
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BOOL lookup_by_ip = False;
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int commandline_debuglevel = -2;
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DEBUGLEVEL = 1;
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/* Prevent smb.conf setting from overridding */
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AllowDebugChange = False;
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*lookup = 0;
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setup_logging(argv[0], DEBUG_STDOUT);
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while ((opt = getopt(argc, argv, "d:fB:U:i:s:SMrhART")) != EOF)
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switch (opt)
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{
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case 'B':
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bcast_addr = *interpret_addr2(optarg);
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got_bcast = True;
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use_bcast = True;
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break;
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case 'f':
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give_flags = True;
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break;
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case 'U':
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bcast_addr = *interpret_addr2(optarg);
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got_bcast = True;
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use_bcast = False;
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break;
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case 'T':
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translate_addresses = !translate_addresses;
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break;
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case 'i':
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lp_set_cmdline("netbios scope", optarg);
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break;
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case 'M':
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find_master = True;
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break;
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case 'S':
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find_status = True;
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break;
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case 'R':
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recursion_desired = True;
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break;
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case 'd':
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commandline_debuglevel = DEBUGLEVEL = atoi(optarg);
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break;
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case 's':
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pstrcpy(dyn_CONFIGFILE, optarg);
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break;
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case 'r':
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RootPort = True;
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break;
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case 'h':
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usage();
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exit(0);
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break;
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case 'A':
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lookup_by_ip = True;
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break;
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default:
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usage();
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exit(1);
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}
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if (argc < 2) {
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usage();
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exit(1);
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}
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if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
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fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
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}
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/*
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* Ensure we reset DEBUGLEVEL if someone specified it
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* on the command line.
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*/
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if(commandline_debuglevel != -2)
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DEBUGLEVEL = commandline_debuglevel;
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load_interfaces();
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if (!open_sockets()) return(1);
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for (i=optind;i<argc;i++)
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{
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char *p;
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struct in_addr ip;
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fstrcpy(lookup,argv[i]);
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if(lookup_by_ip)
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{
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fstrcpy(lookup,"*");
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ip = *interpret_addr2(argv[i]);
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do_node_status(ServerFD, lookup, lookup_type, ip);
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continue;
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}
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if (find_master) {
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if (*lookup == '-') {
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fstrcpy(lookup,"\01\02__MSBROWSE__\02");
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lookup_type = 1;
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} else {
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lookup_type = 0x1d;
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}
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}
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p = strchr_m(lookup,'#');
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if (p) {
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*p = '\0';
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sscanf(++p,"%x",&lookup_type);
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}
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if (!query_one(lookup, lookup_type)) {
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d_printf( "name_query failed to find name %s", lookup );
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if( 0 != lookup_type )
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d_printf( "#%02x", lookup_type );
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d_printf( "\n" );
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}
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}
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return(0);
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}
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