/
main.c
1516 lines (1353 loc) · 33.7 KB
/
main.c
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/*
* main.c
*/
#include "copyright.h"
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <setjmp.h>
#include <pwd.h>
#ifdef hpux
#include <time.h>
#else /* hpux */
#include <sys/time.h>
#endif /* hpux */
#ifndef hpux
#include <sys/wait.h>
#endif /* hpux */
#include <sys/file.h>
#include "netrek.h"
#ifdef RECORD
#include "recorder.h"
#endif
jmp_buf env;
void gb();
#ifdef GATEWAY
/*-----------------------------------------------------------*/
/* we want these for the client subnet validation */
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>
extern char *getenv ();
char *home, homedot[256];
#define DEFAULT_GATEWAY "rebel"
unsigned long mkaddr ();
int serv_port; /* used for blessedness checking */
static char *gateway = DEFAULT_GATEWAY;
#ifdef TREKHOPD
static int trekhopd_port = 6592;
int use_trekhopd = 0;
int port_req = 6592;
char *host_req = "rebel";
#endif
typedef struct {
char id[16];
char inet_addr[24];
int remote_port;
int gw_port;
char full_name[64];
char comment[40];
} SERVER_LIST;
#define MAX_SERVER 128
static SERVER_LIST servers[MAX_SERVER]; /* that ought to be enough */
#define SERVER_DIR "/usr/local/games/"
#define SERVER_FILE ".trekgwrc"
static int server_count = 0;
#define WSPC " \t"
unsigned long
strToNetaddr(str)
char *str;
{
SERVER_LIST *slp;
char *t;
unsigned long answer;
int i;
if (!server_count) {
fprintf(stderr, "netrek: No server list, cannot resolve id\n");
exit(1);
}
/* find the one we want */
for (i = 0, slp = servers; i < server_count; i++, slp++) {
if (!strcmp(str, slp->id) || !strcmp(str, slp->full_name)) {
printf("%s is %s(%d) (%s)\n", slp->id, slp->full_name,
slp->remote_port, slp->comment);
xtrekPort = slp->gw_port;
str = slp->inet_addr;
break;
}
}
if (i == server_count) {
fprintf(stderr, "netrek: Specified server not found.\n");
exit(1);
}
/* now "str" is either the original string or slp->inet_addr */
/* (this will be wrong if -H isn't last on command line) */
answer = 0;
t = str;
for (i = 0; i < 4; i++) {
answer = (answer << 8) | atoi(t);
while (*t && *t != '.')
t++;
if (*t)
t++;
}
#ifdef TREKHOPD
/* do things slightly different */
if (slp->id == NULL) {
fprintf(stderr, "ERROR: host ID '%s' unknown\n", str);
exit(1);
}
xtrekPort = trekhopd_port; /* ought to have an arg to specify this */
port_req = slp->remote_port;
host_req = slp->full_name;
printf("Connecting to %s (%d) via trekhopd (%s %d)\n", host_req,
port_req, serverName, xtrekPort);
#else
printf("Connecting to %s through %s port %d\n", str, serverName, xtrekPort);
#endif
return (answer);
}
/* for trekhopd, only gw_local_port is important */
/* (should be possible to eliminate that too, but I want minimal changes) */
typedef struct {
int uid;
int serv_port;
int port;
int local_port;
} UDPMAP;
#define MAX_UDPMAP 32
static UDPMAP udpmap[MAX_UDPMAP];
static int map_count;
void
getUdpPort()
{
int i;
uid_t uid;
uid = getuid();
gw_mach = gateway;
for (i = 0; i < map_count; i++) {
if (uid == udpmap[i].uid) {
gw_serv_port = udpmap[i].serv_port;
gw_port = udpmap[i].port;
gw_local_port = udpmap[i].local_port;
return;
}
}
/* not recognized; use default UDP port */
gw_serv_port = 5000;
gw_port = 5001;
gw_local_port = 5000;
}
/*
* More network "correct" routine
*/
unsigned long
mkaddr (m)
char *m;
{
struct in_addr ad;
struct hostent *hp;
hp = gethostbyname (m);
if (!hp)
{
ad.s_addr = inet_addr (m);
if (ad.s_addr == -1)
{
fprintf (stderr, "netrek: unknown host \'%s\'\n", m);
exit (1);
}
}
else
MCOPY(hp->h_addr, (char *) &ad, hp->h_length);
return ad.s_addr;
}
/*
* This is not very robust.
*/
void
read_servers()
{
FILE *fp;
SERVER_LIST *slp;
UDPMAP *ump;
char buf[128];
int state;
char *cp;
char file[BUFSIZ];
int line;
int error = 0;
server_count = map_count = 0;
fp = NULL;
if (getenv ("HOME") != NULL)
{
strcpy (homedot, getenv ("HOME"));
strcat (homedot, "/");
strcat (homedot, SERVER_FILE);
fp = fopen (homedot, "r");
strcpy(file, homedot);
}
if (fp == NULL)
{
/* failed, try common one */
strcpy (buf, SERVER_DIR);
strcat (buf, SERVER_FILE);
fp = fopen (buf, "r");
strcpy(file, buf);
}
if (fp == NULL)
{
/* failed, try current directory */
fp = fopen (SERVER_FILE, "r");
strcpy(file, SERVER_FILE);
}
if (fp == NULL)
{
/* failed, give up */
perror ("warning: Unable to open server list");
fprintf (stderr, "Tried to open '%s', '%s', and './%s'\n",
homedot, buf, SERVER_FILE);
return;
}
state = 0;
line = 1;
while (!error) {
fgets(buf, 128, fp);
if (ferror(fp) || feof(fp)) {
if (ferror(fp))
perror("fgets");
break;
}
line++;
/* skip blank lines and lines which start with '#' */
if (*buf == '\0' || *buf == '\n' || *buf == '#')
continue;
buf[strlen(buf) - 1] = '\0'; /* strip the trailing '\n' */
switch (state) {
case 0: /* "trekhopd" or "gw" */
#ifdef TREKHOPD
use_trekhopd = 0;
if (!strcmp(buf, "trekhopd"))
use_trekhopd = 1;
#endif
state++;
break;
case 1: /* gateway host */
gateway = (char *) malloc(strlen(buf) + 1);
strcpy(gateway, buf);
state++;
break;
case 2: /* trekhopd port */
trekhopd_port = atoi(buf);
state++;
break;
case 3: /* UDP map */
if (!strcmp(buf, "END")) {
state++;
break;
}
if (map_count >= MAX_UDPMAP)
{
fprintf (stderr, "UDP map too large; max is %d entries\n",
MAX_UDPMAP);
break;
}
ump = &udpmap[map_count];
cp = strtok(buf, WSPC);/* skip ascii uid */
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on user id.\n",
file, line);
break;
}
ump->uid = atoi(cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on server port.\n",
file, line);
break;
}
ump->serv_port = atoi(cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on port.\n",
file, line);
break;
}
ump->port = atoi(cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on local port.\n",
file, line);
break;
}
ump->local_port = atoi(cp);
#ifdef DEBUG
printf("%2d: %-8d %-8d %-8d %-8d\n", map_count,
ump->uid, ump->serv_port, ump->port, ump->local_port);
#endif
map_count++;
break;
case 4: /* host description */
if (!strcmp(buf, "END")) {
state++;
break;
}
if (server_count >= MAX_SERVER)
{
fprintf (stderr, "server list too large; max is %d entries\n",
MAX_SERVER);
break;
}
slp = &servers[server_count];
cp = strtok(buf, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on id.\n",
file, line);
break;
}
strcpy(slp->id, cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on address.\n",
file, line);
break;
}
strcpy(slp->inet_addr, cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on remote port.\n",
file, line);
break;
}
slp->remote_port = atoi(cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on gateway port.\n",
file, line);
break;
}
slp->gw_port = atoi(cp);
cp = strtok(NULL, WSPC);
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on server name.\n",
file, line);
break;
}
strcpy(slp->full_name, cp);
cp = strtok(NULL, "\"\t");
if(!cp) {
error++;
fprintf(stderr, "%s:%d: syntax error on server comments.\n",
file, line);
break;
}
strcpy(slp->comment, cp);
#ifdef DEBUG
printf("%2d: %-9s %-15s %-5d %-5d %-25s \"%s\"\n", server_count,
slp->id, slp->inet_addr, slp->remote_port, slp->gw_port,
slp->full_name, slp->comment);
#endif
server_count++;
break;
case 5: /* all done! */
break;
default:
fprintf(stderr, "Whoops!\n");
exit(2);
}
}
fclose(fp);
if(error)
exit(1);
}
#endif /* GATEWAY */
#ifdef EM
void handle_segfault();
void handle_exception();
#endif
void get_core(); /* NEW */
#ifdef PACKET_LOG
extern int log_packets;
#endif
#ifdef FOR_MORONS
extern int For_Morons;
#endif
/* move these to data.c one of these days */
char *defaultsFile = NULL;
char *pseudo_name = NULL,
*pseudo_passwd = NULL;
void
main(argc, argv)
int argc;
char **argv;
{
int team, s_type;
int usage = 0;
int err = 0;
char *name, *ptr, *cp;
struct passwd *pwent;
int passive = 0, disable_autologin = 0;
extern char *getenv();
#ifdef SPTEST
int sptest=0;
#endif
int noargs = 1; /* no server or metaserver supplied */
#ifdef GATEWAY
int hset = 0;
#endif
int whosplaying = 0;
#ifdef META
int usemeta = 0;
char *metafile = NULL;
#endif
program = argv[0];
#ifdef GATEWAY
/* restrict this client to certain machines */
{
struct sockaddr_in saddr;
struct hostent *hp;
char myname[64];
long myaddr, myaddr_restricted, myaddr_mask;
if (gethostname (myname, 64) < 0)
{
perror ("gethostname");
exit (1);
}
if ((myaddr = inet_addr (myname)) == -1)
{
if ((hp = gethostbyname (myname)) == NULL)
{
fprintf (stderr, "unable to get addr for local host\n");
exit (1);
}
myaddr = *(long *) hp->h_addr;
}
if ((myaddr_restricted = inet_addr(MYADDR)) == -1){
fprintf(stderr, "Malformed dot address \"%s\"\n", MYADDR);
exit(1);
}
if ((myaddr_mask = inet_addr(MYADDR_MASK)) == -1){
fprintf(stderr, "Malformed dot address mask \"%s\"\n", MYADDR_MASK);
exit(1);
}
/*printf("myname = '%s', myaddr = 0x%.8lx\n", myname, myaddr); */
if ((myaddr & myaddr_mask) != myaddr_restricted)
{
fprintf (stderr, "Sorry, you may not run this client on this host\n");
exit (1);
}
}
#endif
defaultsFile = getenv("XTREKRC");
name = *argv++;
argc--;
if ((ptr = strrchr(name, '/')) != NULL)
name = ptr + 1;
#ifdef GATEWAY
read_servers();
netaddr = 0;
serverName = gateway;
serverNameRemote = NULL;
#endif
while (*argv) {
if (**argv == '-')
++* argv;
else
break;
argc--;
ptr = *argv++;
while (*ptr) {
switch (*ptr) {
case 'v':
printVersion(name);
break;
case 'u':
usage++;
break;
case 's':
if (*argv) {
xtrekPort = atoi(*argv);
passive = 1;
argv++;
argc--;
}
break;
case 'p':
if (*argv) {
xtrekPort = atoi(*argv);
argv++;
argc--;
}
break;
#ifndef GATEWAY
case 'c':
whosplaying = 1;
break;
#endif
#ifdef META
case 'm':
usemeta = 1;
noargs = 0;
break;
case 'M': /* note incompatibility with Moron mode */
if (*argv && *argv[0] != '-') {
metafile = *argv;
argv++;
argc--;
}
break;
#endif
case 'C':
if (*argv && *argv[0] != '-') {
pseudo_name = *argv;
argv++;
argc--;
}
else
disable_autologin = 1;
break;
case 'A':
if (*argv){
pseudo_passwd = *argv;
argv++;
argc--;
}
break;
case 'd':
display = *argv;
argc--;
argv++;
break;
#ifdef RSA
case 'o':
RSA_Client = -1; /* will be reset leter, set negative here *
* to flag that it should override xtrekrc */
printf("Using standard binary verification\n");
break;
case 'V':
RSA_Client = -2; /* will be reset leter, set negative here *
* to flag that it should override xtrekrc */
printf("Using RSA binary verification\n");
break;
#else
case 'V':
printf("This client does not support RSA binary verification\n");
case 'o':
printf("Using standard binary verification\n");
break;
#endif
#ifdef FOR_MORONS
case 'M':
if (For_Morons) {
For_Morons = 0;
} else {
For_Morons = 1;
}
break;
#endif
case 'h':
#ifdef GATEWAY
gw_mach = *argv;
#endif
serverName = *argv;
argc--;
argv++;
noargs = 0;
break;
#ifdef GATEWAY
case 'H':
hset++;
serverNameRemote = *argv;
netaddr = strToNetaddr(*argv);
argc--;
argv++;
noargs = 0;
break;
#endif
case 't': /* USED?? */
title = *argv;
argc--;
argv++;
break;
case 'r':
defaultsFile = *argv;
argv++;
argc--;
break;
case 'D':
debug++;
if(debug == 2) {
printf("udpDebug turned on\n");
udpDebug = 1;
}
break;
#ifdef PACKET_LOG
case 'P':
log_packets++;
break;
#endif
#ifdef RECORD
case 'R':
recordFileName = *argv;
argv++;
argc--;
recordGame = 1;
break;
case 'F':
recordFileName = *argv;
argv++;
argc--;
playback = 1;
break;
case 'Z':
paradise_compat = 1;
shortversion = OLDSHORTVERSION;
break;
#endif
#ifdef LOGMESG
case 'l':
logMess = 1;
logFileName = *argv;
argv++;
argc--;
break;
#endif
#ifdef SPTEST
case 'S':
spt_getwin(atoi(*argv));
argv++;
argc--;
break;
#endif
#ifdef FORKNETREK
case 'w':
if (*argv) {
waitnum = atoi(*argv);
argv++;
argc--;
}
break;
#endif
default:
fprintf(stderr, "%s: unknown option '%c'\n", name, *ptr);
err++;
break;
}
if(argc < 0){
printUsage(name);
exit(1);
}
ptr++;
}
}
#ifdef RECORD
if(paradise_compat)
fprintf(RECORDFD, "Paradise compabitiblity mode enabled (shortversion=%d).\n", shortversion);
if(recordGame && playback) {
fprintf(RECORDFD,
"Record Game (-f) and Playback (-F) are mutually exclusive!\n");
exit(1);
}
#endif
#ifdef EXPIRATIONDATE
{
time_t nowtime;
nowtime = time(NULL);
if (nowtime > EXPIRATIONDATE) {
printf("This program has reached its planned-obsolescence date!\n")
printf("Please try to get a newer version!\n");
exit(666);
} else {
nowtime = EXPIRATIONDATE;
printf("This program will become non-functioonal after %s\n"
ctime(&nowtime));
}
}
#endif
#ifdef LOGMESG
/* open messages logfile */
if (logMess){
logFile = fopen(logFileName, "w+");
if (logFile == NULL) {
perror(logFileName);
exit(1);
}
}
#endif
#ifdef EM
#ifndef NO_TRAP
SIGNAL(SIGSEGV, handle_segfault);
SIGNAL(SIGFPE, handle_exception);
#endif /* DEBUG */
#endif /* EM */
SIGNAL(SIGPIPE, SIG_IGN);
#ifdef nodef
SIGNAL(SIGINT, gb); /* ghostbust debug test */
#endif
if(initDefaults(defaultsFile) == 0){
makeDefault();
/* do it again */
(void) initDefaults(defaultsFile);
}
if (usage || err || argc > 0) {
printUsage(name);
exit(1);
}
#ifdef RECORD
/* playback / record start used to be here */
#endif
#ifdef SHOW_DEFAULTS
show_defaults("B-startup", "metaDefault", "off",
"If no server argument, use metaserver.");
#endif
#ifdef RECORD
if(playback) {
noargs = 0;
usemeta = 0;
serverName = "playback";
W_Initialize(display); /* moved from newwin.c */
} else
#endif
{
if(noargs){
if(booleanDefault("metaDefault", 0))
usemeta = 1;
else if(!getdefault("server")){ /* NEW BEHAVIOR, no arguments, show special metaserver message */
printMetaInfo(name);
exit(1);
}
}
#ifdef GATEWAY
if (!netaddr && !usemeta){
#ifdef TREKHOPD
use_trekhopd = 0;
#endif
serverNameRemote = serverName;
fprintf(stderr,
"netrek: no remote address set (-H). Restricted server will not work.\n");
}
#endif
#ifdef nodef
/* compatability */
if (argc > 0)
display = argv[0];
#endif
/* SUPPRESS 8 */
srandom(getpid() * time((long *) 0));
#ifdef EM
#ifdef SHOW_DEFAULTS
show_defaults("B-startup", "# <feature>[.<alias/server-name>]", "value",
"All defaults variables support appending a server alias or server name\n\
after the variable name. The value specified will be used only if you are \n\
connected to that server. Values are searched by server-name, then by alias\n\
then by base variable name.");
#endif
/*
* server nicknames: * if you do netrek -h foo * and "server.foo:
* etrek.netrek.com" exists in your netrekrc * the server that is called
* is netrek.netrek.com * also, port.foo: x will make the port called x
*/
#ifdef SHOW_DEFAULTS
show_defaults("B-startup", "server.alias", "x.y.z",
"Aliases. Replace x.y.z with full server name, and specify <alias>\n\
From then on you can specify that server by doing 'netrek -h <alias>'");
#endif
#ifdef SHOW_DEFAULTS
show_defaults("B-startup", "server", "default.server.edu",
"Name of the default server to use if the -h flag isn't given.");
#endif
if(!serverName){
serverName = getdefault("server");
if(!serverName)
serverName = DEFAULT_SERVER;
}
#endif
/* look for alias */
{
char buf[100], *real_name, *server;
#ifdef GATEWAY
if(hset)
server = serverNameRemote;
else
server = serverName;
#else
server = serverName;
#endif
sprintf(buf, "server.%s", server);
real_name = _getdefault(buf);
if(real_name && strcmp(server, real_name) != 0){
serverAlias = server;
server = real_name;
#ifdef GATEWAY
serverNameRemote = server;
if(!hset)
serverName = server;
#else
serverName = server;
#endif
}
if(!serverAlias){
serverAlias = getalias(server);
}
}
/* if defaults is re-read, these pointers would be freed, store them
instead */
if(serverName)
serverName = strdup(serverName);
#ifdef GATEWAY
if(serverNameRemote)
serverNameRemote = strdup(serverNameRemote);
#endif
if(serverAlias)
serverAlias = strdup(serverAlias);
if (xtrekPort < 0) {
#ifdef SHOW_DEFAULTS
show_defaults("B-startup", "port", "2592",
"Number of the default port to use if the -p flag isn't given.");
#endif
xtrekPort = intDefault("port", -1);
if(xtrekPort < 0)
xtrekPort = DEFAULT_PORT;
}
#ifndef GATEWAY
if(whosplaying){
check_whosplaying(serverName, xtrekPort);
exit(0);
}
#endif
W_Initialize(display); /* moved from newwin.c */
#ifdef META
if(usemeta)
/* either we return from this with a new serverName or we exit */
do_metaserver(metafile);
#endif
#ifdef RSA
#ifdef SHOW_DEFAULTS
show_defaults("C-startup", "useRSA", RSA_Client?"on":"off",
"Use RSA by default.");
#endif
if(RSA_Client >= 0)
RSA_Client = booleanDefault("useRSA", RSA_Client);
else
/* RSA mode was specified in the command line args */
RSA_Client = (RSA_Client == -2) ? 1 : 0;
#endif
#ifdef GATEWAY
/* pick a nice set of UDP ports */
getUdpPort();
#endif
} /* if not playback */
#ifdef FOR_MORONS
#ifdef SHOW_DEFAULTS
show_defaults("misc", "forMorons", For_Morons?"on":"off",
"EM");
#endif
For_Morons = booleanDefault("ForMorons", For_Morons);
#endif
newwin(display, name); /* open memory...? Leftover from xtrek code! */
/* Get login name */
if ((pwent = getpwuid(getuid())) != NULL)
(void) strncpy(login, pwent->pw_name, sizeof(login));
else
(void) strncpy(login, "****", sizeof(login));
login[sizeof(login) - 1] = '\0';
openmem();
#ifdef RECORD
if(playback) {
#ifdef RECORD_DEBUG
fprintf(RECORDFD, "Calling startPlayback()...recordGame=%d\n",
recordGame);
#endif
startPlayback();
}
else
#endif
{
#ifdef RECORD
if(!playback) {
/* Find out if we're going to record. If so, find out if the filename
if ok now... it might require input if they give us an existing
filename and if we have to do this before we connect, otherwise
they might ghostbust (if they take too long)
*/
if(recordGame || (recordGame = booleanDefault("recordGame", recordGame)))
{
if(!recordFileName)
recordFileName = getdefault("recordFile");
check_record_filename();
}
}
#endif
if (!passive) {
callServer(xtrekPort, serverName);
} else {
connectToServer(xtrekPort);
}
}
#ifdef HOCKEY
#ifdef SHOW_DEFAULTS
show_defaults("hockey", "puckName", PUCK_NAME,
"Puck name [used by the client along with puckHost to find the \n\
hockey puck].");
#endif
if ((cp = getdefault("puckName")) != 0)
(void) strncpy(puck_name, cp, sizeof(puck_name));
puck_name[sizeof(puck_name) - 1] = '\0';
#ifdef SHOW_DEFAULTS