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https://github.com/samba-team/samba.git
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r5004: add current samba3 nmblookup.c ready for updating to new nbt lib
This commit is contained in:
Andrew Tridgell
Gerald (Jerry) Carter
parent
b781a54244
commit
854f7f376d
299
source/utils/nmblookup.c
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299
source/utils/nmblookup.c
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/*
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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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Copyright (C) Jelmer Vernooij 2003 (Conversion to popt)
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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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#define NO_SYSLOG
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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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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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struct node_status_extra extra;
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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, &extra);
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if (status) {
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for (i=0;i<count;i++) {
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pull_ascii_fstring(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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d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
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extra.mac_addr[0], extra.mac_addr[1],
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extra.mac_addr[2], extra.mac_addr[3],
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extra.mac_addr[4], extra.mac_addr[5]);
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d_printf("\n");
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SAFE_FREE(status);
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} else {
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d_printf("No reply from %s\n\n",inet_ntoa(ip));
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}
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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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static BOOL find_master=False;
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static BOOL lookup_by_ip = False;
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poptContext pc;
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struct poptOption long_options[] = {
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POPT_AUTOHELP
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{ "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
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{ "flags", 'f', POPT_ARG_VAL, &give_flags, True, "List the NMB flags returned" },
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{ "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
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{ "master-browser", 'M', POPT_ARG_VAL, &find_master, True, "Search for a master browser" },
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{ "recursion", 'R', POPT_ARG_VAL, &recursion_desired, True, "Set recursion desired in package" },
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{ "status", 'S', POPT_ARG_VAL, &find_status, True, "Lookup node status as well" },
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{ "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
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{ "root-port", 'r', POPT_ARG_VAL, &RootPort, True, "Use root port 137 (Win95 only replies to this)" },
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{ "lookup-by-ip", 'A', POPT_ARG_VAL, &lookup_by_ip, True, "Do a node status on <name> as an IP Address" },
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POPT_COMMON_SAMBA
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POPT_COMMON_CONNECTION
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{ 0, 0, 0, 0 }
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};
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*lookup = 0;
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setup_logging(argv[0],True);
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pc = poptGetContext("nmblookup", argc, (const char **)argv, long_options,
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POPT_CONTEXT_KEEP_FIRST);
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poptSetOtherOptionHelp(pc, "<NODE> ...");
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while ((opt = poptGetNextOpt(pc)) != -1) {
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switch (opt) {
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case 'B':
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bcast_addr = *interpret_addr2(poptGetOptArg(pc));
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got_bcast = True;
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use_bcast = True;
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break;
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case 'U':
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bcast_addr = *interpret_addr2(poptGetOptArg(pc));
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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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}
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}
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poptGetArg(pc); /* Remove argv[0] */
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if(!poptPeekArg(pc)) {
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poptPrintUsage(pc, stderr, 0);
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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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load_interfaces();
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if (!open_sockets()) return(1);
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while(poptPeekArg(pc))
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{
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char *p;
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struct in_addr ip;
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fstrcpy(lookup,poptGetArg(pc));
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if(lookup_by_ip)
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{
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ip = *interpret_addr2(lookup);
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fstrcpy(lookup,"*");
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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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poptFreeContext(pc);
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return(0);
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}
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