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empserver/src/server/main.c
Ron Koenderink 55e6aca9e0 (wrmakesrc,wripglob,wrgamesdef,info,apro,mobupdate,rea,turn 
upda,ef_open,logerror,emp_config,match_user,show_motd,gamedown,
typed_wu,delete_old_announcements,mobility_check,mobility_init,
allocate_memory,write_newcap_script,main,files,fairland,doconfig,)
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2005-03-02 12:47:15 +00:00

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/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2004, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---
*
* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
* related information and legal notices. It is expected that any future
* projects/authors will amend these files as needed.
*
* ---
*
* main.c: Thread and signal initialization for Empire Server
*
* Known contributors to this file:
* Dave Pare, 1994
* Steve McClure, 1996, 1998
* Doug Hay, 1998
*/
#if defined(aix) || defined(linux)
#include <unistd.h>
#endif /* aix or linux */
#include <signal.h>
#if !defined(_WIN32)
#include <sys/ioctl.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#if defined(_WIN32)
#include <winsock2.h>
#include <process.h>
#include "../lib/gen/getopt.h"
#include "service.h"
#endif
#include "misc.h"
#include "nat.h"
#include "file.h"
#include "player.h"
#include "empthread.h"
#include "plane.h"
#include "nuke.h"
#include "land.h"
#include "ship.h"
#include "sect.h"
#include "product.h"
#include "optlist.h"
#include "server.h"
#include "prototypes.h"
static void nullify_objects(void);
static void init_files(void);
#if defined(_WIN32)
static void loc_NTInit(void);
#endif
static int mainpid = 0;
/*
* Debugging?
* If yes, don't fork into background, don't catch certain signals,
* call abort() on internal error.
*/
int debug = 0;
static void
print_usage(char *program_name)
{
#if defined(_WIN32)
printf("Usage: %s -i -I service_name -r -R service_name -D datadir -e config_file -d\n", program_name);
printf("-i install service with the default name %s\n", DEFAULT_SERVICE_NAME);
printf("-r remove service with the default name %s\n", DEFAULT_SERVICE_NAME);
#else
printf("Usage: %s -D datadir -e config_file -d -p -s\n", program_name);
printf("-p print flag\n");
printf("-s stack check flag (include print flag)\n");
#endif
printf("-d debug mode\n");
}
int
main(int argc, char **argv)
{
int flags = 0;
#if defined(_WIN32)
int install_service_set = 0;
char *service_name = NULL;
int remove_service_set = 0;
int datadir_set = 0;
#else
char *config_file = NULL;
#endif
int op;
s_char tbuf[256];
mainpid = getpid();
#if defined(_WIN32)
while ((op = getopt(argc, argv, "D:de:iI:rR:h")) != EOF) {
#else
while ((op = getopt(argc, argv, "D:de:psh")) != EOF) {
#endif
switch (op) {
case 'D':
datadir = optarg;
#if defined(_WIN32)
datadir_set++;
#endif
break;
case 'd':
debug++;
break;
case 'e':
config_file = optarg;
break;
#if defined(_WIN32)
case 'I':
service_name = optarg;
/*
* fall out
*/
case 'i':
install_service_set++;
break;
break;
case 'R':
service_name = optarg;
/*
* fall out
*/
case 'r':
remove_service_set++;
break;
#else
case 'p':
flags |= EMPTH_PRINT;
break;
case 's':
flags |= EMPTH_PRINT | EMPTH_STACKCHECK;
break;
#endif
case 'h':
default:
print_usage(argv[0]);
return EXIT_FAILURE;
}
}
loginit("server");
#if defined(_WIN32)
if ((debug || datadir_set || config_file != NULL) &&
remove_service_set) {
logerror("Can't use -d, -D or -e with either "
"-r or -R options when starting the server");
printf("Can't use -d, -D or -e with either -r "
"or -R options\n");
exit(EXIT_FAILURE);
}
if (debug && install_service_set) {
logerror("Can't use -d with either "
"-i or -I options when starting the server");
printf("Can't use -d with either -i "
"or -I options\n");
exit(EXIT_FAILURE);
}
if (install_service_set && remove_service_set) {
logerror("Can't use both -r or -R and -i or -I options when starting "
"the server");
printf("Can't use both -r or -R and -i or -I options\n");
exit(EXIT_FAILURE);
}
if (install_service_set)
return install_service(argv[0], service_name, datadir_set);
if (remove_service_set)
return remove_service(service_name);
#endif /* _WIN32 */
if (config_file == NULL) {
sprintf(tbuf, "%s/econfig", datadir);
config_file = tbuf;
}
logerror("------------------------------------------------------");
logerror("Empire server (pid %d) started", (int)getpid());
#if defined(_WIN32)
if (debug == 0) {
SERVICE_TABLE_ENTRY DispatchTable[]={{"Empire Server", service_main},{NULL, NULL}};
if (StartServiceCtrlDispatcher(DispatchTable))
return 0;
else
if (GetLastError() != ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
logerror("Failed to dispatch service (%d)", GetLastError());
printf("Failed to dispatch service (%d)\n", GetLastError());
exit(EXIT_FAILURE);
} else /* start in the foreground */
debug = 1;
}
#else
if (debug == 0 && flags == 0) {
disassoc();
}
#endif
start_server(flags, config_file);
#if defined(__linux__) && defined(_EMPTH_POSIX)
strcpy(tbuf, argv[0]);
for (op = 1; op < argc; op++) {
strcat(tbuf, " ");
strcat(tbuf, argv[op]);
}
sprintf(argv[0], "%s (main pid: %d)", tbuf, getpid());
#endif
empth_exit();
/* We should never get here. But, just in case... */
close_files();
#if defined(_WIN32)
loc_NTTerm();
#endif
return EXIT_SUCCESS;
}
void
start_server(int flags, char *config_file)
{
#ifdef POSIXSIGNALS
struct sigaction act;
#endif /* POSIXSIGNALS */
#if defined(_WIN32)
loc_NTInit();
#endif
emp_config(config_file);
update_policy_check();
nullify_objects();
#if !defined(_WIN32)
/* signal() should not be used with mit pthreads. Anyway if u
have a posix threads u definitly have posix signals -- Sasha */
#if defined (POSIXSIGNALS) || defined (_EMPTH_POSIX)
#ifdef SA_SIGINFO
act.sa_flags = SA_SIGINFO;
#endif
sigemptyset(&act.sa_mask);
act.sa_handler = shutdwn;
/* pthreads on Linux use SIGUSR1 (*shrug*) so only catch it if not on
a Linux box running POSIX threads -- STM */
#if !(defined(__linux__) && defined(_EMPTH_POSIX))
sigaction(SIGUSR1, &act, NULL);
#endif
sigaction(SIGTERM, &act, NULL);
sigaction(SIGINT, &act, NULL);
act.sa_handler = panic;
sigaction(SIGBUS, &act, NULL);
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGILL, &act, NULL);
sigaction(SIGFPE, &act, NULL);
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, NULL);
#else
if (debug == 0 && flags == 0) {
/* pthreads on Linux use SIGUSR1 (*shrug*) so only catch it if not on
a Linux box running POSIX threads -- STM */
#if !(defined(__linux__) && defined(_EMPTH_POSIX))
signal(SIGUSR1, shutdwn);
#endif
signal(SIGTERM, shutdwn);
signal(SIGBUS, panic);
signal(SIGSEGV, panic);
signal(SIGILL, panic);
signal(SIGFPE, panic);
signal(SIGINT, shutdwn);
}
signal(SIGPIPE, SIG_IGN);
#endif /* POSIXSIGNALS */
#endif /* _WIN32 */
empth_init((char **)&player, flags);
srand(time(NULL));
global_init();
shutdown_init();
player_init();
ef_init();
init_files();
io_init();
if (opt_MOB_ACCESS) {
/* This fixes up mobility upon restart */
mobility_init();
}
empth_create(PP_ACCEPT, player_accept, (50 * 1024), flags,
"AcceptPlayers", "Accept network connections", 0);
empth_create(PP_KILLIDLE, player_kill_idle, (50 * 1024), flags,
"KillIdle", "Kills idle player connections", 0);
empth_create(PP_SCHED, update_sched, (50 * 1024), flags, "UpdateSched",
"Schedules updates to occur", 0);
empth_create(PP_TIMESTAMP, delete_lostitems, (50 * 1024), flags,
"DeleteItems", "Deletes old lost items", 0);
if (opt_MOB_ACCESS) {
/* Start the mobility access check thread */
empth_create(PP_TIMESTAMP, mobility_check, (50 * 1024), flags,
"MobilityCheck", "Writes the timestamp file", 0);
}
if (opt_MARKET) {
empth_create(PP_TIMESTAMP, market_update, (50 * 1024), flags,
"MarketUpdate", "Updates the market", 0);
}
}
static void
init_files(void)
{
ef_open(EF_NATION, O_RDWR, EFF_MEM);
ef_open(EF_SECTOR, O_RDWR, EFF_MEM);
ef_open(EF_SHIP, O_RDWR, EFF_MEM);
ef_open(EF_PLANE, O_RDWR, EFF_MEM);
ef_open(EF_LAND, O_RDWR, EFF_MEM);
ef_open(EF_NEWS, O_RDWR, 0);
ef_open(EF_LOAN, O_RDWR, 0);
ef_open(EF_TREATY, O_RDWR, 0);
ef_open(EF_NUKE, O_RDWR, EFF_MEM);
ef_open(EF_POWER, O_RDWR, 0);
ef_open(EF_TRADE, O_RDWR, 0);
ef_open(EF_MAP, O_RDWR, EFF_MEM);
ef_open(EF_BMAP, O_RDWR, EFF_MEM);
ef_open(EF_COMM, O_RDWR, 0);
ef_open(EF_LOST, O_RDWR, 0);
}
void
close_files(void)
{
ef_close(EF_NATION);
ef_close(EF_SECTOR);
ef_close(EF_SHIP);
ef_close(EF_PLANE);
ef_close(EF_LAND);
ef_close(EF_NEWS);
ef_close(EF_LOAN);
ef_close(EF_TREATY);
ef_close(EF_NUKE);
ef_close(EF_POWER);
ef_close(EF_TRADE);
ef_close(EF_MAP);
ef_close(EF_COMM);
ef_close(EF_BMAP);
ef_close(EF_LOST);
}
/* we're going down. try to close the files at least */
#if !defined(_WIN32)
void
panic(int sig)
{
#ifdef POSIXSIGNALS
struct sigaction act;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
act.sa_handler = SIG_DFL;
sigaction(SIGBUS, &act, NULL);
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGILL, &act, NULL);
sigaction(SIGFPE, &act, NULL);
#else
signal(SIGBUS, SIG_DFL);
signal(SIGSEGV, SIG_DFL);
signal(SIGILL, SIG_DFL);
signal(SIGFPE, SIG_DFL);
#endif /* POSIXSIGNALS */
logerror("server received fatal signal %d", sig);
log_last_commands();
close_files();
if (CANT_HAPPEN(sig != SIGBUS && sig != SIGSEGV
&& sig != SIGILL && sig != SIGFPE))
_exit(1);
if (raise(sig))
_exit(1);
}
#endif /* _WIN32 */
void
shutdwn(int sig)
{
struct player *p;
time_t now;
#if defined(__linux__) && defined(_EMPTH_POSIX)
/* This is a hack to get around the way pthreads work on Linux. This
may be useful on other platforms too where threads are turned into
processes. */
if (getpid() != mainpid) {
empth_t *me;
me = empth_self();
if (me && me->name) {
if (strlen(me->name) > 5) {
/* Player threads are cleaned up below, so just have
them return. This should work. */
if (!strncmp("Player", me->name, 6)) {
return;
}
}
}
/* Not a player thread - must be server thread, so exit */
empth_exit();
return;
}
#endif
logerror("Shutdown commencing (cleaning up threads.)");
for (p = player_next(0); p != 0; p = player_next(p)) {
if (p->state != PS_PLAYING)
continue;
pr_flash(p, "Server shutting down...\n");
p->state = PS_SHUTDOWN;
p->aborted++;
if (p->command) {
pr_flash(p, "Shutdown aborting command\n");
}
empth_wakeup(p->proc);
}
if (!sig) {
/* Sleep and let some cleanup happen - note this doesn't work
when called from a signal handler, since we may or may not
be in the right thread. So we just pass by and kill 'em
all. */
time(&now);
empth_sleep(now + 1);
}
for (p = player_next(0); p != 0; p = player_next(p)) {
p->state = PS_KILL;
p->aborted++;
empth_terminate(p->proc);
p = player_delete(p);
}
if (sig)
logerror("Server shutting down on signal %d", sig);
else
logerror("Server shutting down at Deity's request");
close_files();
_exit(0);
}
static void
nullify_objects(void)
{
int i, j;
if (opt_BIG_CITY)
dchr[SCT_CAPIT] = bigcity_dchr;
if (opt_NO_LCMS)
dchr[SCT_LIGHT].d_cost = -1;
if (opt_NO_HCMS)
dchr[SCT_HEAVY].d_cost = -1;
if (opt_NO_OIL) {
dchr[SCT_OIL].d_cost = -1;
dchr[SCT_REFINE].d_cost = -1;
}
for (i = 0; i < pln_maxno; i++) {
if (opt_NO_HCMS)
plchr[i].pl_hcm = 0;
if (opt_NO_LCMS)
plchr[i].pl_lcm = 0;
if (opt_NO_OIL)
plchr[i].pl_fuel = 0;
}
for (i = 0; i < lnd_maxno; i++) {
if (opt_NO_HCMS)
lchr[i].l_hcm = 0;
if (opt_NO_LCMS)
lchr[i].l_lcm = 0;
/* Fix up the military values */
lchr[i].l_mil = lchr[i].l_item[I_MILIT];
}
for (i = 0; i < shp_maxno; i++) {
if (opt_NO_HCMS)
mchr[i].m_hcm = 0;
if (opt_NO_LCMS)
mchr[i].m_lcm = 0;
if (opt_NO_OIL) {
if (mchr[i].m_flags & M_OIL)
mchr[i].m_name = 0;
}
}
for (i = 0; i < nuk_maxno; i++) {
if (opt_NO_HCMS)
nchr[i].n_hcm = 0;
if (opt_NO_LCMS)
nchr[i].n_lcm = 0;
}
for (i = 0; i <= SCT_MAXDEF; i++) {
if (opt_NO_HCMS)
dchr[i].d_hcms = 0;
if (opt_NO_LCMS)
dchr[i].d_lcms = 0;
}
for (i = 0; i < prd_maxno; i++) {
for (j = 0; j < MAXPRCON; j++) {
if (opt_NO_HCMS && pchr[i].p_ctype[j] == I_HCM)
pchr[i].p_camt[j] = 0;
if (opt_NO_LCMS && pchr[i].p_ctype[j] == I_LCM)
pchr[i].p_camt[j] = 0;
if (opt_NO_OIL && pchr[i].p_ctype[j] == I_OIL)
pchr[i].p_camt[j] = 0;
}
}
}
#if defined(_WIN32)
static void
loc_NTInit()
{
int rc;
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2, 0);
rc = WSAStartup(wVersionRequested, &wsaData);
if (rc != 0) {
logerror("WSAStartup failed. %d", rc);
_exit(1);
}
}
#endif
#if defined(_WIN32)
void
loc_NTTerm()
{
WSACleanup();
}
#endif
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