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/*
Unix SMB/CIFS implementation.
NBT client - used to lookup netbios names
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Jelmer Vernooij 2003 (Conversion to popt)
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 NO_SYSLOG
#include "includes.h"
extern BOOL AllowDebugChange;
static BOOL give_flags = False;
static BOOL use_bcast = True;
static BOOL got_bcast = False;
static struct in_addr bcast_addr;
static BOOL recursion_desired = False;
static BOOL translate_addresses = False;
static int ServerFD= -1;
static int RootPort = False;
static BOOL find_status=False;
/****************************************************************************
open the socket communication
**************************************************************************/
static BOOL open_sockets(void)
{
ServerFD = open_socket_in( SOCK_DGRAM,
(RootPort ? 137 : 0),
(RootPort ? 0 : 3),
interpret_addr(lp_socket_address()), True );
if (ServerFD == -1)
return(False);
set_socket_options( ServerFD, "SO_BROADCAST" );
DEBUG(3, ("Socket opened.\n"));
return True;
}
/****************************************************************************
turn a node status flags field into a string
****************************************************************************/
static char *node_status_flags(unsigned char flags)
{
static fstring ret;
fstrcpy(ret,"");
fstrcat(ret, (flags & 0x80) ? "<GROUP> " : " ");
if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
return ret;
}
/****************************************************************************
turn the NMB Query flags into a string
****************************************************************************/
static char *query_flags(int flags)
{
static fstring ret1;
fstrcpy(ret1, "");
if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
if (flags & NM_FLAGS_B) fstrcat(ret1, "Broadcast ");
return ret1;
}
/****************************************************************************
do a node status query
****************************************************************************/
static void do_node_status(int fd, const char *name, int type, struct in_addr ip)
{
struct nmb_name nname;
int count, i, j;
NODE_STATUS_STRUCT *status;
struct node_status_extra extra;
fstring cleanname;
d_printf("Looking up status of %s\n",inet_ntoa(ip));
make_nmb_name(&nname, name, type);
status = node_status_query(fd,&nname,ip, &count, &extra);
if (status) {
for (i=0;i<count;i++) {
pull_ascii_fstring(cleanname, status[i].name);
for (j=0;cleanname[j];j++) {
if (!isprint((int)cleanname[j])) cleanname[j] = '.';
}
d_printf("\t%-15s <%02x> - %s\n",
cleanname,status[i].type,
node_status_flags(status[i].flags));
}
d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
extra.mac_addr[0], extra.mac_addr[1],
extra.mac_addr[2], extra.mac_addr[3],
extra.mac_addr[4], extra.mac_addr[5]);
d_printf("\n");
SAFE_FREE(status);
} else {
d_printf("No reply from %s\n\n",inet_ntoa(ip));
}
}
/****************************************************************************
send out one query
****************************************************************************/
static BOOL query_one(const char *lookup, unsigned int lookup_type)
{
int j, count, flags = 0;
struct in_addr *ip_list=NULL;
if (got_bcast) {
d_printf("querying %s on %s\n", lookup, inet_ntoa(bcast_addr));
ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
use_bcast?True:recursion_desired,
bcast_addr,&count, &flags, NULL);
} else {
struct in_addr *bcast;
for (j=iface_count() - 1;
!ip_list && j >= 0;
j--) {
bcast = iface_n_bcast(j);
d_printf("querying %s on %s\n",
lookup, inet_ntoa(*bcast));
ip_list = name_query(ServerFD,lookup,lookup_type,
use_bcast,
use_bcast?True:recursion_desired,
*bcast,&count, &flags, NULL);
}
}
if (!ip_list) return False;
if (give_flags)
d_printf("Flags: %s\n", query_flags(flags));
for (j=0;j<count;j++) {
if (translate_addresses) {
struct hostent *host = gethostbyaddr((char *)&ip_list[j], sizeof(ip_list[j]), AF_INET);
if (host) {
d_printf("%s, ", host -> h_name);
}
}
d_printf("%s %s<%02x>\n",inet_ntoa(ip_list[j]),lookup, lookup_type);
}
/* We can only do find_status if the ip address returned
was valid - ie. name_query returned true.
*/
if (find_status) {
do_node_status(ServerFD, lookup, lookup_type, ip_list[0]);
}
safe_free(ip_list);
return (ip_list != NULL);
}
/****************************************************************************
main program
****************************************************************************/
int main(int argc,char *argv[])
{
int opt;
unsigned int lookup_type = 0x0;
fstring lookup;
static BOOL find_master=False;
static BOOL lookup_by_ip = False;
poptContext pc;
struct poptOption long_options[] = {
POPT_AUTOHELP
{ "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
{ "flags", 'f', POPT_ARG_VAL, &give_flags, True, "List the NMB flags returned" },
{ "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
{ "master-browser", 'M', POPT_ARG_VAL, &find_master, True, "Search for a master browser" },
{ "recursion", 'R', POPT_ARG_VAL, &recursion_desired, True, "Set recursion desired in package" },
{ "status", 'S', POPT_ARG_VAL, &find_status, True, "Lookup node status as well" },
{ "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
{ "root-port", 'r', POPT_ARG_VAL, &RootPort, True, "Use root port 137 (Win95 only replies to this)" },
{ "lookup-by-ip", 'A', POPT_ARG_VAL, &lookup_by_ip, True, "Do a node status on <name> as an IP Address" },
POPT_COMMON_SAMBA
POPT_COMMON_CONNECTION
{ 0, 0, 0, 0 }
};
*lookup = 0;
setup_logging(argv[0],True);
pc = poptGetContext("nmblookup", argc, (const char **)argv, long_options,
POPT_CONTEXT_KEEP_FIRST);
poptSetOtherOptionHelp(pc, "<NODE> ...");
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case 'B':
bcast_addr = *interpret_addr2(poptGetOptArg(pc));
got_bcast = True;
use_bcast = True;
break;
case 'U':
bcast_addr = *interpret_addr2(poptGetOptArg(pc));
got_bcast = True;
use_bcast = False;
break;
case 'T':
translate_addresses = !translate_addresses;
break;
}
}
poptGetArg(pc); /* Remove argv[0] */
if(!poptPeekArg(pc)) {
poptPrintUsage(pc, stderr, 0);
exit(1);
}
if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
}
load_interfaces();
if (!open_sockets()) return(1);
while(poptPeekArg(pc))
{
char *p;
struct in_addr ip;
fstrcpy(lookup,poptGetArg(pc));
if(lookup_by_ip)
{
ip = *interpret_addr2(lookup);
fstrcpy(lookup,"*");
do_node_status(ServerFD, lookup, lookup_type, ip);
continue;
}
if (find_master) {
if (*lookup == '-') {
fstrcpy(lookup,"\01\02__MSBROWSE__\02");
lookup_type = 1;
} else {
lookup_type = 0x1d;
}
}
p = strchr_m(lookup,'#');
if (p) {
*p = '\0';
sscanf(++p,"%x",&lookup_type);
}
if (!query_one(lookup, lookup_type)) {
d_printf( "name_query failed to find name %s", lookup );
if( 0 != lookup_type )
d_printf( "#%02x", lookup_type );
d_printf( "\n" );
}
}
poptFreeContext(pc);
return(0);
}
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