#include "includes.h"
pstring servicesf = CONFIGFILE;
extern fstring global_myworkgroup;
extern pstring global_myname;
int am_parent = 1;
int last_message = -1;
#define LAST_MESSAGE() smb_fn_name(last_message)
extern pstring user_socket_options;
#ifdef WITH_DFS
extern int dcelogin_atmost_once;
#endif
extern fstring remote_machine;
static int server_fd = -1;
int smbd_server_fd(void)
{
return server_fd;
}
void smbd_set_server_fd(int fd)
{
server_fd = fd;
client_setfd(fd);
}
static void *dflt_sig(void)
{
exit_server("caught signal");
return NULL;
}
static void killkids(void)
{
if(am_parent) kill(0,SIGTERM);
}
static BOOL open_sockets_inetd(void)
{
smbd_set_server_fd(dup(0));
close_low_fds();
set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
set_socket_options(smbd_server_fd(),user_socket_options);
return True;
}
static BOOL open_sockets(BOOL is_daemon,BOOL interactive, int port)
{
int num_interfaces = iface_count();
int fd_listenset[FD_SETSIZE];
fd_set listen_set;
int s;
int i;
if (!is_daemon) {
return open_sockets_inetd();
}
#ifdef HAVE_ATEXIT
{
static int atexit_set;
if(atexit_set == 0) {
atexit_set=1;
atexit(killkids);
}
}
#endif
CatchChild();
FD_ZERO(&listen_set);
if(lp_interfaces() && lp_bind_interfaces_only()) {
if(num_interfaces > FD_SETSIZE) {
DEBUG(0,("open_sockets: Too many interfaces specified to bind to. Number was %d \
max can be %d\n",
num_interfaces, FD_SETSIZE));
return False;
}
for(i = 0; i < num_interfaces; i++) {
struct in_addr *ifip = iface_n_ip(i);
if(ifip == NULL) {
DEBUG(0,("open_sockets: interface %d has NULL IP address !\n", i));
continue;
}
s = fd_listenset[i] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
if(s == -1)
return False;
set_socket_options(s,"SO_KEEPALIVE");
set_socket_options(s,user_socket_options);
if (listen(s, 5) == -1) {
DEBUG(0,("listen: %s\n",strerror(errno)));
close(s);
return False;
}
FD_SET(s,&listen_set);
}
} else {
num_interfaces = 1;
s = open_socket_in(SOCK_STREAM, port, 0,
interpret_addr(lp_socket_address()),True);
if (s == -1)
return(False);
set_socket_options(s,"SO_KEEPALIVE");
set_socket_options(s,user_socket_options);
if (listen(s, 5) == -1) {
DEBUG(0,("open_sockets: listen: %s\n",
strerror(errno)));
close(s);
return False;
}
fd_listenset[0] = s;
FD_SET(s,&listen_set);
}
DEBUG(2,("waiting for a connection\n"));
while (1) {
fd_set lfds;
int num;
lp_talloc_free();
message_dispatch();
memcpy((char *)&lfds, (char *)&listen_set,
sizeof(listen_set));
num = sys_select(FD_SETSIZE,&lfds,NULL,NULL,NULL);
if (num == -1 && errno == EINTR) {
extern VOLATILE sig_atomic_t reload_after_sighup;
if (reload_after_sighup) {
change_to_root_user();
DEBUG(1,("Reloading services after SIGHUP\n"));
reload_services(False);
reload_after_sighup = False;
}
continue;
}
check_reload(time(NULL));
for( ; num > 0; num--) {
struct sockaddr addr;
socklen_t in_addrlen = sizeof(addr);
s = -1;
for(i = 0; i < num_interfaces; i++) {
if(FD_ISSET(fd_listenset[i],&lfds)) {
s = fd_listenset[i];
FD_CLR(fd_listenset[i],&lfds);
break;
}
}
smbd_set_server_fd(accept(s,&addr,&in_addrlen));
if (smbd_server_fd() == -1 && errno == EINTR)
continue;
if (smbd_server_fd() == -1) {
DEBUG(0,("open_sockets: accept: %s\n",
strerror(errno)));
continue;
}
if (smbd_server_fd() != -1 && interactive)
return True;
if (smbd_server_fd() != -1 && sys_fork()==0) {
for(i = 0; i < num_interfaces; i++)
close(fd_listenset[i]);
close_low_fds();
am_parent = 0;
set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
set_socket_options(smbd_server_fd(),user_socket_options);
reset_globals_after_fork();
tdb_reopen_all();
return True;
}
close(smbd_server_fd());
smbd_set_server_fd(-1);
force_check_log_size();
}
}
}
BOOL reload_services(BOOL test)
{
BOOL ret;
if (lp_loaded()) {
pstring fname;
pstrcpy(fname,lp_configfile());
if (file_exist(fname,NULL) && !strcsequal(fname,servicesf)) {
pstrcpy(servicesf,fname);
test = False;
}
}
reopen_logs();
if (test && !lp_file_list_changed())
return(True);
lp_killunused(conn_snum_used);
ret = lp_load(servicesf,False,False,True);
load_printers();
if (!test)
reload_services(True);
reopen_logs();
load_interfaces();
{
if (smbd_server_fd() != -1) {
set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
set_socket_options(smbd_server_fd(),user_socket_options);
}
}
reset_mangled_cache();
reset_stat_cache();
set_current_service(NULL,True);
return(ret);
}
VOLATILE sig_atomic_t reload_after_sighup = False;
static void sig_hup(int sig)
{
BlockSignals(True,SIGHUP);
DEBUG(0,("Got SIGHUP\n"));
sys_select_signal();
reload_after_sighup = True;
BlockSignals(False,SIGHUP);
}
#if DUMP_CORE
static BOOL dump_core(void)
{
char *p;
pstring dname;
pstrcpy(dname,lp_logfile());
if ((p=strrchr(dname,'/'))) *p=0;
pstrcat(dname,"/corefiles");
mkdir(dname,0700);
sys_chown(dname,getuid(),getgid());
chmod(dname,0700);
if (chdir(dname)) return(False);
umask(~(0700));
#ifdef HAVE_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",
(int)rlp.rlim_cur,(int)rlp.rlim_max));
}
#endif
#endif
DEBUG(0,("Dumping core in %s\n",dname));
abort();
return(True);
}
#endif
static void decrement_smbd_process_count(void)
{
int32 total_smbds;
if (lp_max_smbd_processes()) {
total_smbds = 0;
tdb_change_int32_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
}
}
void exit_server(char *reason)
{
static int firsttime=1;
extern char *last_inbuf;
if (!firsttime) exit(0);
firsttime = 0;
change_to_root_user();
DEBUG(2,("Closing connections\n"));
conn_close_all();
invalidate_all_vuids();
if (lp_status(-1))
yield_connection(NULL,"");
respond_to_all_remaining_local_messages();
decrement_smbd_process_count();
#ifdef WITH_DFS
if (dcelogin_atmost_once) {
dfs_unlogin();
}
#endif
if (!reason) {
int oldlevel = DEBUGLEVEL;
DEBUGLEVEL = 10;
DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
if (last_inbuf)
show_msg(last_inbuf);
DEBUGLEVEL = oldlevel;
DEBUG(0,("===============================================================\n"));
#if DUMP_CORE
if (dump_core()) return;
#endif
}
locking_end();
DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
exit(0);
}
static void init_structs(void )
{
if (!*global_myname) {
char *p;
fstrcpy( global_myname, myhostname() );
p = strchr( global_myname, '.' );
if (p)
*p = 0;
}
strupper( global_myname );
conn_init();
file_init();
init_rpc_pipe_hnd();
init_dptrs();
secrets_init();
}
static void usage(char *pname)
{
printf("Usage: %s [-DaioPh?V] [-d debuglevel] [-l log basename] [-p port]\n", pname);
printf(" [-O socket options] [-s services file]\n");
printf("\t-D Become a daemon (default)\n");
printf("\t-a Append to log file (default)\n");
printf("\t-i Run interactive (not a daemon)\n");
printf("\t-o Overwrite log file, don't append\n");
printf("\t-h Print usage\n");
printf("\t-? Print usage\n");
printf("\t-V Print version\n");
printf("\t-d debuglevel Set the debuglevel\n");
printf("\t-l log basename. Basename for log/debug files\n");
printf("\t-p port Listen on the specified port\n");
printf("\t-O socket options Socket options\n");
printf("\t-s services file. Filename of services file\n");
printf("\n");
}
int main(int argc,char *argv[])
{
extern BOOL append_log;
BOOL is_daemon = False;
BOOL interactive = False;
BOOL specified_logfile = False;
int port = SMB_PORT;
int opt;
extern char *optarg;
pstring logfile;
#ifdef HAVE_SET_AUTH_PARAMETERS
set_auth_parameters(argc,argv);
#endif
while (argc > 1 && (*argv[1] != '-')) {
argv++;
argc--;
}
while ( EOF != (opt = getopt(argc, argv, "O:l:s:d:Dip:h?Vaof:")) )
switch (opt) {
case 'O':
pstrcpy(user_socket_options,optarg);
break;
case 's':
pstrcpy(servicesf,optarg);
break;
case 'l':
specified_logfile = True;
slprintf(logfile, sizeof(logfile)-1, "%s/log.smbd", optarg);
lp_set_logfile(logfile);
break;
case 'a':
append_log = True;
break;
case 'o':
append_log = False;
break;
case 'D':
is_daemon = True;
break;
case 'i':
interactive = True;
break;
case 'd':
if (*optarg == 'A')
DEBUGLEVEL = 10000;
else
DEBUGLEVEL = atoi(optarg);
break;
case 'p':
port = atoi(optarg);
break;
case 'h':
case '?':
usage(argv[0]);
exit(0);
break;
case 'V':
printf("Version %s\n",VERSION);
exit(0);
break;
default:
DEBUG(0,("Incorrect program usage - are you sure the command line is correct?\n"));
usage(argv[0]);
exit(1);
}
#ifdef HAVE_SETLUID
setluid(0);
#endif
sec_init();
append_log = True;
TimeInit();
if(!specified_logfile) {
slprintf(logfile, sizeof(logfile)-1, "%s/log.smbd", LOGFILEBASE);
lp_set_logfile(logfile);
}
pstrcpy(remote_machine, "smbd");
setup_logging(argv[0],interactive);
charset_initialise();
generate_random_buffer(NULL, 0, False);
gain_root_privilege();
gain_root_group_privilege();
fault_setup((void (*)(void *))exit_server);
CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
BlockSignals(True,SIGPIPE);
#if defined(SIGFPE)
BlockSignals(True,SIGFPE);
#endif
#if defined(SIGUSR2)
BlockSignals(True,SIGUSR2);
#endif
BlockSignals(False, SIGHUP);
BlockSignals(False, SIGUSR1);
umask(0);
init_sec_ctx();
init_conn_ctx();
reopen_logs();
DEBUG(0,( "smbd version %s started.\n", VERSION));
DEBUGADD(0,( "Copyright Andrew Tridgell and the Samba Team 1992-2002\n"));
DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
(int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
exit(1);
}
if (!reload_services(False))
return(-1);
init_structs();
#ifdef WITH_PROFILE
if (!profile_setup(False)) {
DEBUG(0,("ERROR: failed to setup profiling shared memory\n"));
return -1;
}
#endif
#ifdef WITH_SSL
{
extern BOOL sslEnabled;
sslEnabled = lp_ssl_enabled();
if(sslEnabled)
sslutil_init(True);
}
#endif
codepage_initialise(lp_client_code_page());
fstrcpy(global_myworkgroup, lp_workgroup());
CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
DEBUG(3,( "loaded services\n"));
if (!is_daemon && !is_a_socket(0)) {
if (!interactive)
DEBUG(0,("standard input is not a socket, assuming -D option\n"));
is_daemon = True;
}
if (is_daemon && !interactive) {
DEBUG( 3, ( "Becoming a daemon.\n" ) );
become_daemon();
}
#if HAVE_SETPGID
if (interactive)
setpgid( (pid_t)0, (pid_t)0);
#endif
if (!directory_exist(lp_lockdir(), NULL))
mkdir(lp_lockdir(), 0755);
if (is_daemon)
pidfile_create("smbd");
if (!message_init())
exit(1);
if (lp_status(-1))
claim_connection(NULL,"",0,True);
if (!migrate_from_old_password_file(global_myworkgroup))
DEBUG(0,("Failed to migrate from old MAC file.\n"));
if (!open_sockets(is_daemon,interactive,port))
exit(1);
if (!locking_init(0))
exit(1);
if (!print_backend_init())
exit(1);
if (!share_info_db_init())
exit(1);
if(!initialize_password_db(False))
exit(1);
reload_services(True);
if(!pdb_generate_sam_sid()) {
DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
exit(1);
}
if (*lp_rootdir()) {
if (sys_chroot(lp_rootdir()) == 0)
DEBUG(2,("Changed root to %s\n", lp_rootdir()));
}
if (!init_oplocks())
exit(1);
if (!init_change_notify())
exit(1);
smbd_process();
exit_server("normal exit");
return(0);
}