diff options
Diffstat (limited to 'source/nmbd/nmbd.c')
| -rw-r--r-- | source/nmbd/nmbd.c | 584 |
1 files changed, 0 insertions, 584 deletions
diff --git a/source/nmbd/nmbd.c b/source/nmbd/nmbd.c deleted file mode 100644 index 75544535af2..00000000000 --- a/source/nmbd/nmbd.c +++ /dev/null @@ -1,584 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 1.9. - NBT netbios routines and daemon - version 2 - Copyright (C) Andrew Tridgell 1994-1997 - - 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. - - Revision History: - - 14 jan 96: lkcl@pires.co.uk - added multiple workgroup domain master support - -*/ - -#include "includes.h" - -extern int DEBUGLEVEL; - -extern pstring debugf; -pstring servicesf = CONFIGFILE; - -extern pstring scope; - -int ClientNMB = -1; -int ClientDGRAM = -1; - -extern pstring myhostname; -static pstring host_file; -extern pstring myname; -extern fstring myworkgroup; - -/* are we running as a daemon ? */ -static BOOL is_daemon = False; - -/* what server type are we currently */ - -time_t StartupTime =0; - -extern struct in_addr ipzero; - - /**************************************************************************** - catch a sigterm - ****************************************************************************/ -static int sig_term() -{ - BlockSignals(True,SIGTERM); - - DEBUG(0,("Got SIGTERM: going down...\n")); - - /* write out wins.dat file if samba is a WINS server */ - dump_names(); - - /* remove all samba names, with wins server if necessary. */ - remove_my_names(); - - /* announce all server entries as 0 time-to-live, 0 type */ - /* XXXX don't care if we never receive a response back... yet */ - announce_my_servers_removed(); - - /* XXXX other things: if we are a master browser, force an election? */ - - exit(0); - /* Keep compiler happy.. */ - return 0; -} - - -/**************************************************************************** -catch a sighup -****************************************************************************/ -static int sig_hup(void) -{ - BlockSignals(True,SIGHUP); - - DEBUG(0,("Got SIGHUP (reload not implemented)\n")); - dump_names(); - reload_services(True); - - set_samba_nb_type(); - - BlockSignals(False,SIGHUP); -#ifndef DONT_REINSTALL_SIG - signal(SIGHUP,SIGNAL_CAST sig_hup); -#endif - return(0); -} - -/**************************************************************************** -catch a sigpipe -****************************************************************************/ -static int sig_pipe(void) -{ - BlockSignals(True,SIGPIPE); - - DEBUG(0,("Got SIGPIPE\n")); - if (!is_daemon) - exit(1); - BlockSignals(False,SIGPIPE); - return(0); -} - -#if DUMP_CORE -/******************************************************************* -prepare to dump a core file - carefully! -********************************************************************/ -static BOOL dump_core(void) -{ - char *p; - pstring dname; - strcpy(dname,debugf); - if ((p=strrchr(dname,'/'))) *p=0; - strcat(dname,"/corefiles"); - mkdir(dname,0700); - sys_chown(dname,getuid(),getgid()); - chmod(dname,0700); - if (chdir(dname)) return(False); - umask(~(0700)); - -#ifndef NO_GETRLIMIT -#ifdef RLIMIT_CORE - { - struct rlimit rlp; - getrlimit(RLIMIT_CORE, &rlp); - rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur); - setrlimit(RLIMIT_CORE, &rlp); - getrlimit(RLIMIT_CORE, &rlp); - DEBUG(3,("Core limits now %d %d\n",rlp.rlim_cur,rlp.rlim_max)); - } -#endif -#endif - - - DEBUG(0,("Dumping core in %s\n",dname)); - return(True); -} -#endif - - -/**************************************************************************** -possibly continue after a fault -****************************************************************************/ -static void fault_continue(void) -{ -#if DUMP_CORE - dump_core(); -#endif -} - -/******************************************************************* - expire old names from the namelist and server list - ******************************************************************/ -static void expire_names_and_servers(time_t t) -{ - static time_t lastrun = 0; - - if (!lastrun) lastrun = t; - if (t < lastrun + 5) return; - lastrun = t; - - expire_names(t); - expire_servers(t); -} - -/***************************************************************************** - reload the services file - **************************************************************************/ -BOOL reload_services(BOOL test) -{ - BOOL ret; - extern fstring remote_machine; - - strcpy(remote_machine,"nmbd"); - - if (lp_loaded()) - { - pstring fname; - strcpy(fname,lp_configfile()); - if (file_exist(fname,NULL) && !strcsequal(fname,servicesf)) - { - strcpy(servicesf,fname); - test = False; - } - } - - if (test && !lp_file_list_changed()) - return(True); - - ret = lp_load(servicesf,True); - - /* perhaps the config filename is now set */ - if (!test) { - DEBUG(3,("services not loaded\n")); - reload_services(True); - } - - /* Do a sanity check for a misconfigured nmbd */ - if(lp_wins_support() && *lp_wins_server()) { - DEBUG(0,("ERROR: both 'wins support = true' and 'wins server = <server>' \ -cannot be set in the smb.conf file. nmbd aborting.\n")); - exit(10); - } - - return(ret); -} - - - -/**************************************************************************** -load a netbios hosts file -****************************************************************************/ -static void load_hosts_file(char *fname) -{ - FILE *f = fopen(fname,"r"); - pstring line; - if (!f) { - DEBUG(2,("Can't open lmhosts file %s\n",fname)); - return; - } - - while (!feof(f)) - { - pstring ip,name,flags,extra; - struct subnet_record *d; - char *ptr; - int count = 0; - struct in_addr ipaddr; - enum name_source source = LMHOSTS; - - if (!fgets_slash(line,sizeof(pstring),f)) continue; - - if (*line == '#') continue; - - strcpy(ip,""); - strcpy(name,""); - strcpy(flags,""); - - ptr = line; - - if (next_token(&ptr,ip ,NULL)) ++count; - if (next_token(&ptr,name ,NULL)) ++count; - if (next_token(&ptr,flags,NULL)) ++count; - if (next_token(&ptr,extra,NULL)) ++count; - - if (count <= 0) continue; - - if (count > 0 && count < 2) { - DEBUG(0,("Ill formed hosts line [%s]\n",line)); - continue; - } - - if (count >= 4) { - DEBUG(0,("too many columns in %s (obsolete syntax)\n",fname)); - continue; - } - - DEBUG(4, ("lmhost entry: %s %s %s\n", ip, name, flags)); - - if (strchr(flags,'G') || strchr(flags,'S')) { - DEBUG(0,("group flag in %s ignored (obsolete)\n",fname)); - continue; - } - - if (strchr(flags,'M')) { - source = SELF; - strcpy(myname,name); - } - - ipaddr = *interpret_addr2(ip); - d = find_subnet_all(ipaddr); - if (d) { - add_netbios_entry(d,name,0x00,NB_ACTIVE,0,source,ipaddr,True,True); - add_netbios_entry(d,name,0x20,NB_ACTIVE,0,source,ipaddr,True,True); - } - } - - fclose(f); -} - - -/**************************************************************************** - The main select loop. - ***************************************************************************/ -static void process(void) -{ - BOOL run_election; - - while (True) - { - time_t t = time(NULL); - run_election = check_elections(); - listen_for_packets(run_election); - - run_packet_queue(); - run_elections(t); - - announce_host(t); - announce_master(t); - announce_remote(t); - - query_refresh_names(t); - - expire_names_and_servers(t); - expire_netbios_response_entries(t); - refresh_my_names(t); - - write_browse_list(t); - do_browser_lists(t); - check_master_browser(t); - add_domain_names(t); - } -} - - -/**************************************************************************** - open the socket communication -****************************************************************************/ -static BOOL open_sockets(BOOL isdaemon, int port) -{ - struct hostent *hp; - - /* get host info */ - if ((hp = Get_Hostbyname(myhostname)) == 0) { - DEBUG(0,( "Get_Hostbyname: Unknown host. %s\n",myhostname)); - return False; - } - - if (isdaemon) - ClientNMB = open_socket_in(SOCK_DGRAM, port,0,interpret_addr(lp_socket_address())); - else - ClientNMB = 0; - - ClientDGRAM = open_socket_in(SOCK_DGRAM,DGRAM_PORT,3,interpret_addr(lp_socket_address())); - - if (ClientNMB == -1) - return(False); - - signal(SIGPIPE, SIGNAL_CAST sig_pipe); - - set_socket_options(ClientNMB,"SO_BROADCAST"); - set_socket_options(ClientDGRAM,"SO_BROADCAST"); - - DEBUG(3,("Sockets opened.\n")); - return True; -} - - -/**************************************************************************** - initialise connect, service and file structs -****************************************************************************/ -static BOOL init_structs() -{ - extern fstring local_machine; - char *p; - - if (! *myname) { - strcpy(myname,myhostname); - p = strchr(myname,'.'); - if (p) *p = 0; - } - strupper(myname); - - strcpy(local_machine,myname); - trim_string(local_machine," "," "); - p = strchr(local_machine,' '); - if (p) *p = 0; - strlower(local_machine); - - return True; -} - -/**************************************************************************** -usage on the program -****************************************************************************/ -static void usage(char *pname) -{ - DEBUG(0,("Incorrect program usage - is the command line correct?\n")); - - printf("Usage: %s [-n name] [-D] [-p port] [-d debuglevel] [-l log basename]\n",pname); - printf("Version %s\n",VERSION); - printf("\t-D become a daemon\n"); - printf("\t-p port listen on the specified port\n"); - printf("\t-d debuglevel set the debuglevel\n"); - printf("\t-l log basename. Basename for log/debug files\n"); - printf("\t-n netbiosname. the netbios name to advertise for this host\n"); - printf("\t-H hosts file load a netbios hosts file\n"); - printf("\n"); -} - - -/**************************************************************************** - main program - **************************************************************************/ - int main(int argc,char *argv[]) -{ - int port = NMB_PORT; - int opt; - extern FILE *dbf; - extern char *optarg; - char pidFile[100] = { 0 }; - - *host_file = 0; - - StartupTime = time(NULL); - - TimeInit(); - - strcpy(debugf,NMBLOGFILE); - - setup_logging(argv[0],False); - - charset_initialise(-1); - -#ifdef LMHOSTSFILE - strcpy(host_file,LMHOSTSFILE); -#endif - - /* this is for people who can't start the program correctly */ - while (argc > 1 && (*argv[1] != '-')) { - argv++; - argc--; - } - - fault_setup(fault_continue); - - signal(SIGHUP ,SIGNAL_CAST sig_hup); - signal(SIGTERM,SIGNAL_CAST sig_term); - - while ((opt = getopt(argc, argv, "s:T:I:C:bAi:B:N:Rn:l:d:Dp:hSH:G:f:")) != EOF) - { - switch (opt) - { - case 'f': - strncpy(pidFile, optarg, sizeof(pidFile)); - break; - case 's': - strcpy(servicesf,optarg); - break; - case 'N': - case 'B': - case 'I': - case 'C': - case 'G': - DEBUG(0,("Obsolete option '%c' used\n",opt)); - break; - case 'H': - strcpy(host_file,optarg); - break; - case 'n': - strcpy(myname,optarg); - strupper(myname); - break; - case 'l': - sprintf(debugf,"%s.nmb",optarg); - break; - case 'i': - strcpy(scope,optarg); - strupper(scope); - break; - case 'D': - is_daemon = True; - break; - case 'd': - DEBUGLEVEL = atoi(optarg); - break; - case 'p': - port = atoi(optarg); - break; - case 'h': - usage(argv[0]); - exit(0); - break; - default: - if (!is_a_socket(0)) { - usage(argv[0]); - } - break; - } - } - - DEBUG(1,("%s netbios nameserver version %s started\n",timestring(),VERSION)); - DEBUG(1,("Copyright Andrew Tridgell 1994\n")); - - get_myname(myhostname,NULL); - - if (!reload_services(False)) - return(-1); - - charset_initialise(lp_client_code_page()); - - init_structs(); - - reload_services(True); - - strcpy(myworkgroup, lp_workgroup()); - - if (strequal(myworkgroup,"*")) { - DEBUG(0,("ERROR: a workgroup name of * is no longer supported\n")); - exit(1); - } - - set_samba_nb_type(); - - if (!is_daemon && !is_a_socket(0)) { - DEBUG(0,("standard input is not a socket, assuming -D option\n")); - is_daemon = True; - } - - if (is_daemon) { - DEBUG(2,("%s becoming a daemon\n",timestring())); - become_daemon(); - } - - if (*pidFile) - { - int fd; - char buf[20]; - - if ((fd = open(pidFile, - O_NONBLOCK | O_CREAT | O_WRONLY | O_TRUNC, 0644)) < 0) - { - DEBUG(0,("ERROR: can't open %s: %s\n", pidFile, strerror(errno))); - exit(1); - } - if (fcntl_lock(fd,F_SETLK,0,1,F_WRLCK)==False) - { - DEBUG(0,("ERROR: nmbd is already running\n")); - exit(1); - } - sprintf(buf, "%u\n", (unsigned int) getpid()); - if (write(fd, buf, strlen(buf)) < 0) - { - DEBUG(0,("ERROR: can't write to %s: %s\n", pidFile, strerror(errno))); - exit(1); - } - /* Leave pid file open & locked for the duration... */ - } - - - DEBUG(3,("Opening sockets %d\n", port)); - - if (!open_sockets(is_daemon,port)) return 1; - - load_interfaces(); - add_my_subnets(myworkgroup); - - add_my_names(); - - DEBUG(3,("Checked names\n")); - - load_netbios_names(); - - DEBUG(3,("Loaded names\n")); - - if (*host_file) { - load_hosts_file(host_file); - DEBUG(3,("Loaded hosts file\n")); - } - - write_browse_list(time(NULL)); - - DEBUG(3,("Dumped names\n")); - - /* We can only take sigterm signals in the select. */ - BlockSignals(True,SIGTERM); - process(); - close_sockets(); - - if (dbf) - fclose(dbf); - return(0); -} |