4.4BSD/usr/src/contrib/hunt/hunt.c
/*
* Hunt
* Copyright (c) 1985 Conrad C. Huang, Gregory S. Couch, Kenneth C.R.C. Arnold
* San Francisco, California
*/
# include <errno.h>
# if !defined(USE_CURSES) && defined(BSD_RELEASE) && BSD_RELEASE >= 44
# include <termios.h>
static struct termios saved_tty;
# endif
# include <curses.h>
# include <string.h>
# include "hunt.h"
# include <signal.h>
# include <ctype.h>
# include <sys/stat.h>
# include <sys/time.h>
/*
* Some old versions of curses don't have these defined
*/
# if !defined(cbreak) && (!defined(BSD_RELEASE) || BSD_RELEASE < 44)
# define cbreak() crmode()
# endif
# if !defined(USE_CURSES) || !defined(TERMINFO)
# define beep() (void) putchar(CTRL('G'))
# endif
# if !defined(USE_CURSES)
# undef refresh
# define refresh() (void) fflush(stdout);
# endif
# ifdef USE_CURSES
# define clear_eol() clrtoeol()
# define put_ch addch
# define put_str addstr
# endif
#if !defined(BSD_RELEASE) || BSD_RELEASE < 44
extern int _putchar();
#endif
FLAG Last_player = FALSE;
# ifdef MONITOR
FLAG Am_monitor = FALSE;
# endif
char Buf[BUFSIZ];
int Socket;
# ifdef INTERNET
char *Sock_host;
char *use_port;
FLAG Query_driver = FALSE;
char *Send_message = NULL;
FLAG Show_scores = FALSE;
# endif
SOCKET Daemon;
# ifdef INTERNET
# define DAEMON_SIZE (sizeof Daemon)
# else
# define DAEMON_SIZE (sizeof Daemon - 1)
# endif
char map_key[256]; /* what to map keys to */
FLAG no_beep;
static char name[NAMELEN];
static char team = ' ';
static int in_visual;
extern int cur_row, cur_col;
extern char *tgoto();
# ifdef INTERNET
extern SOCKET *list_drivers();
# endif
/*
* main:
* Main program for local process
*/
main(ac, av)
int ac;
char **av;
{
char *term;
int c;
extern int errno;
extern int Otto_mode;
extern int optind;
extern char *optarg;
long enter_status;
SIGNAL_TYPE intr(), sigterm(), sigemt(), tstp();
long env_init(), quit();
enter_status = env_init((long) Q_CLOAK);
while ((c = getopt(ac, av, "Sbcfh:l:mn:op:qst:w:")) != EOF) {
switch (c) {
case 'l': /* rsh compatibility */
case 'n':
(void) strncpy(name, optarg, NAMELEN);
break;
case 't':
team = *optarg;
if (!isdigit(team)) {
fprintf(stderr, "Team names must be numeric\n");
team = ' ';
}
break;
case 'o':
# ifndef OTTO
fputs("The -o flag is reserved for future use.\n",
stderr);
goto usage;
# else
Otto_mode = TRUE;
break;
# endif
case 'm':
# ifdef MONITOR
Am_monitor = TRUE;
# else
fputs("The monitor was not compiled in.\n", stderr);
# endif
break;
# ifdef INTERNET
case 'S':
Show_scores = TRUE;
break;
case 'q': /* query whether hunt is running */
Query_driver = TRUE;
break;
case 'w':
Send_message = optarg;
break;
case 'h':
Sock_host = optarg;
break;
case 'p':
use_port = optarg;
Test_port = atoi(use_port);
break;
# else
case 'S':
case 'q':
case 'w':
case 'h':
case 'p':
fputs("Need TCP/IP for S, q, w, h, and p options.\n",
stderr);
break;
# endif
case 'c':
enter_status = Q_CLOAK;
break;
case 'f':
# ifdef FLY
enter_status = Q_FLY;
# else
fputs("The flying code was not compiled in.\n", stderr);
# endif
break;
case 's':
enter_status = Q_SCAN;
break;
case 'b':
no_beep = !no_beep;
break;
default:
usage:
fputs(
"usage:\thunt [-qmcsfS] [-n name] [-t team] [-p port] [-w message] [host]\n",
stderr);
exit(1);
}
}
# ifdef INTERNET
if (optind + 1 < ac)
goto usage;
else if (optind + 1 == ac)
Sock_host = av[ac - 1];
# else
if (optind > ac)
goto usage;
# endif
# ifdef INTERNET
if (Show_scores) {
SOCKET *hosts;
for (hosts = list_drivers(); hosts->sin_port != 0; hosts += 1)
dump_scores(*hosts);
exit(0);
}
if (Query_driver) {
SOCKET *hosts;
for (hosts = list_drivers(); hosts->sin_port != 0; hosts += 1) {
struct hostent *hp;
int num_players;
hp = gethostbyaddr((char *) &hosts->sin_addr,
sizeof hosts->sin_addr, AF_INET);
num_players = ntohs(hosts->sin_port);
printf("%d player%s hunting on %s!\n",
num_players, (num_players == 1) ? "" : "s",
hp != NULL ? hp->h_name :
inet_ntoa(hosts->sin_addr));
}
exit(0);
}
# endif
# ifdef OTTO
if (Otto_mode)
(void) strncpy(name, "otto", NAMELEN);
else
# endif
fill_in_blanks();
(void) fflush(stdout);
if (!isatty(0) || (term = getenv("TERM")) == NULL) {
fprintf(stderr, "no terminal type\n");
exit(1);
}
# ifdef USE_CURSES
initscr();
(void) noecho();
(void) cbreak();
# else /* !USE_CURSES */
# if !defined(BSD_RELEASE) || BSD_RELEASE < 44
_tty_ch = 0;
# endif
gettmode();
(void) setterm(term);
(void) noecho();
(void) cbreak();
# if defined(BSD_RELEASE) && BSD_RELEASE >= 44
tcgetattr(0, &saved_tty);
# endif
_puts(TI);
_puts(VS);
# endif /* !USE_CURSES */
in_visual = TRUE;
if (LINES < SCREEN_HEIGHT || COLS < SCREEN_WIDTH)
leave(1, "Need a larger window");
clear_the_screen();
(void) signal(SIGINT, intr);
(void) signal(SIGTERM, sigterm);
(void) signal(SIGEMT, sigemt);
(void) signal(SIGPIPE, SIG_IGN);
#if !defined(USE_CURSES) && defined(SIGTSTP)
(void) signal(SIGTSTP, tstp);
#endif
for (;;) {
# ifdef INTERNET
find_driver(TRUE);
if (Daemon.sin_port == 0)
leave(1, "Game not found, try again");
jump_in:
do {
int option;
Socket = socket(SOCK_FAMILY, SOCK_STREAM, 0);
if (Socket < 0) {
perror("socket");
exit(1);
}
option = 1;
if (setsockopt(Socket, SOL_SOCKET, SO_USELOOPBACK,
&option, sizeof option) < 0)
perror("setsockopt loopback");
errno = 0;
if (connect(Socket, (struct sockaddr *) &Daemon,
DAEMON_SIZE) < 0) {
if (errno != ECONNREFUSED) {
perror("connect");
leave(1, "connect");
}
}
else
break;
sleep(1);
} while (close(Socket) == 0);
# else /* !INTERNET */
/*
* set up a socket
*/
if ((Socket = socket(SOCK_FAMILY, SOCK_STREAM, 0)) < 0) {
perror("socket");
exit(1);
}
/*
* attempt to connect the socket to a name; if it fails that
* usually means that the driver isn't running, so we start
* up the driver.
*/
Daemon.sun_family = SOCK_FAMILY;
(void) strcpy(Daemon.sun_path, Sock_name);
if (connect(Socket, &Daemon, DAEMON_SIZE) < 0) {
if (errno != ENOENT) {
perror("connect");
leave(1, "connect2");
}
start_driver();
do {
(void) close(Socket);
if ((Socket = socket(SOCK_FAMILY, SOCK_STREAM, 0)) < 0) {
perror("socket");
exit(1);
}
sleep(2);
} while (connect(Socket, &Daemon, DAEMON_SIZE) < 0);
}
# endif
do_connect(name, team, enter_status);
# ifdef INTERNET
if (Send_message != NULL) {
do_message();
if (enter_status == Q_MESSAGE)
break;
Send_message = NULL;
/* don't continue as that will call find_driver */
goto jump_in;
}
# endif
playit();
if ((enter_status = quit(enter_status)) == Q_QUIT)
break;
}
leave(0, (char *) NULL);
/* NOTREACHED */
}
# ifdef INTERNET
# ifdef BROADCAST
broadcast_vec(s, vector)
int s; /* socket */
struct sockaddr **vector;
{
char if_buf[BUFSIZ];
struct ifconf ifc;
struct ifreq *ifr;
unsigned int n;
int vec_cnt;
*vector = NULL;
ifc.ifc_len = sizeof if_buf;
ifc.ifc_buf = if_buf;
if (ioctl(s, SIOCGIFCONF, (char *) &ifc) < 0)
return 0;
vec_cnt = 0;
n = ifc.ifc_len / sizeof (struct ifreq);
*vector = (struct sockaddr *) malloc(n * sizeof (struct sockaddr));
for (ifr = ifc.ifc_req; n != 0; n--, ifr++)
if (ioctl(s, SIOCGIFBRDADDR, ifr) >= 0)
memcpy(&(*vector)[vec_cnt++], &ifr->ifr_addr,
sizeof (struct sockaddr));
return vec_cnt;
}
# endif
SOCKET *
list_drivers()
{
int option;
u_short msg;
u_short port_num;
static SOCKET test;
int test_socket;
int namelen;
char local_name[256];
static initial = TRUE;
static struct in_addr local_address;
register struct hostent *hp;
extern int errno;
# ifdef BROADCAST
static int brdc;
static SOCKET *brdv;
# else
u_long local_net;
# endif
int i;
static SOCKET *listv;
static unsigned int listmax;
unsigned int listc;
int mask;
struct timeval wait;
if (initial) { /* do one time initialization */
# ifndef BROADCAST
sethostent(1); /* don't bother to close host file */
# endif
if (gethostname(local_name, sizeof local_name) < 0) {
leave(1, "Sorry, I have no name.");
/* NOTREACHED */
}
if ((hp = gethostbyname(local_name)) == NULL) {
leave(1, "Can't find myself.");
/* NOTREACHED */
}
local_address = * ((struct in_addr *) hp->h_addr);
listmax = 20;
listv = (SOCKET *) malloc(listmax * sizeof (SOCKET));
} else if (Sock_host != NULL)
return listv; /* address already valid */
test_socket = socket(SOCK_FAMILY, SOCK_DGRAM, 0);
if (test_socket < 0) {
perror("socket");
leave(1, "socket system call failed");
/* NOTREACHED */
}
test.sin_family = SOCK_FAMILY;
test.sin_port = htons(Test_port);
listc = 0;
if (Sock_host != NULL) { /* explicit host given */
if ((hp = gethostbyname(Sock_host)) == NULL) {
leave(1, "Unknown host");
/* NOTREACHED */
}
test.sin_addr = *((struct in_addr *) hp->h_addr);
goto test_one_host;
}
if (!initial) {
/* favor host of previous session by broadcasting to it first */
test.sin_addr = Daemon.sin_addr;
msg = htons(C_PLAYER); /* Must be playing! */
(void) sendto(test_socket, (char *) &msg, sizeof msg, 0,
(struct sockaddr *) &test, DAEMON_SIZE);
}
# ifdef BROADCAST
if (initial)
brdc = broadcast_vec(test_socket, (struct sockaddr **) &brdv);
if (brdc <= 0) {
initial = FALSE;
test.sin_addr = local_address;
goto test_one_host;
}
# ifdef SO_BROADCAST
/* Sun's will broadcast even though this option can't be set */
option = 1;
if (setsockopt(test_socket, SOL_SOCKET, SO_BROADCAST,
&option, sizeof option) < 0) {
perror("setsockopt broadcast");
leave(1, "setsockopt broadcast");
/* NOTREACHED */
}
# endif
/* send broadcast packets on all interfaces */
msg = htons(C_TESTMSG());
for (i = 0; i < brdc; i++) {
test.sin_addr = brdv[i].sin_addr;
if (sendto(test_socket, (char *) &msg, sizeof msg, 0,
(struct sockaddr *) &test, DAEMON_SIZE) < 0) {
perror("sendto");
leave(1, "sendto");
/* NOTREACHED */
}
}
# else /* !BROADCAST */
/* loop thru all hosts on local net and send msg to them. */
msg = htons(C_TESTMSG());
local_net = inet_netof(local_address);
sethostent(0); /* rewind host file */
while (hp = gethostent()) {
if (local_net == inet_netof(* ((struct in_addr *) hp->h_addr))){
test.sin_addr = * ((struct in_addr *) hp->h_addr);
(void) sendto(test_socket, (char *) &msg, sizeof msg, 0,
(struct sockaddr *) &test, DAEMON_SIZE);
}
}
# endif
get_response:
namelen = DAEMON_SIZE;
errno = 0;
wait.tv_sec = 1;
wait.tv_usec = 0;
for (;;) {
if (listc + 1 >= listmax) {
listmax += 20;
listv = (SOCKET *) realloc((char *) listv,
listmax * sizeof(SOCKET));
}
mask = 1 << test_socket;
if (select(test_socket + 1, &mask, NULL, NULL, &wait) == 1
&& recvfrom(test_socket, (char *) &port_num, sizeof port_num,
0, (struct sockaddr *) &listv[listc], &namelen) > 0) {
/*
* Note that we do *not* convert from network to host
* order since the port number *should* be in network
* order:
*/
for (i = 0; i < listc; i += 1)
if (listv[listc].sin_addr.s_addr
== listv[i].sin_addr.s_addr)
break;
if (i == listc)
listv[listc++].sin_port = port_num;
continue;
}
if (errno != 0 && errno != EINTR) {
perror("select/recvfrom");
leave(1, "select/recvfrom");
/* NOTREACHED */
}
/* terminate list with local address */
listv[listc].sin_family = SOCK_FAMILY;
listv[listc].sin_addr = local_address;
listv[listc].sin_port = htons(0);
(void) close(test_socket);
initial = FALSE;
return listv;
}
test_one_host:
msg = htons(C_TESTMSG());
(void) sendto(test_socket, (char *) &msg, sizeof msg, 0,
(struct sockaddr *) &test, DAEMON_SIZE);
goto get_response;
}
find_driver(do_startup)
FLAG do_startup;
{
SOCKET *hosts;
hosts = list_drivers();
if (hosts[0].sin_port != htons(0)) {
int i, c;
if (hosts[1].sin_port == htons(0)) {
Daemon = hosts[0];
return;
}
/* go thru list and return host that matches daemon */
clear_the_screen();
# ifdef USE_CURSES
move(1, 0);
# else
mvcur(cur_row, cur_col, 1, 0);
cur_row = 1;
cur_col = 0;
# endif
put_str("Pick one:");
for (i = 0; i < HEIGHT - 4 && hosts[i].sin_port != htons(0);
i += 1) {
struct hostent *hp;
char buf[80];
# ifdef USE_CURSES
move(3 + i, 0);
# else
mvcur(cur_row, cur_col, 3 + i, 0);
cur_row = 3 + i;
cur_col = 0;
# endif
hp = gethostbyaddr((char *) &hosts[i].sin_addr,
sizeof hosts[i].sin_addr, AF_INET);
(void) sprintf(buf, "%8c %.64s", 'a' + i,
hp != NULL ? hp->h_name
: inet_ntoa(hosts->sin_addr));
put_str(buf);
}
# ifdef USE_CURSES
move(4 + i, 0);
# else
mvcur(cur_row, cur_col, 4 + i, 0);
cur_row = 4 + i;
cur_col = 0;
# endif
put_str("Enter letter: ");
refresh();
while (!islower(c = getchar()) || (c -= 'a') >= i) {
beep();
refresh();
}
Daemon = hosts[c];
clear_the_screen();
return;
}
if (!do_startup)
return;
start_driver();
sleep(2);
find_driver(FALSE);
}
dump_scores(host)
SOCKET host;
{
struct hostent *hp;
int s;
char buf[BUFSIZ];
int cnt;
hp = gethostbyaddr((char *) &host.sin_addr, sizeof host.sin_addr,
AF_INET);
printf("\n%s:\n", hp != NULL ? hp->h_name : inet_ntoa(host.sin_addr));
fflush(stdout);
s = socket(SOCK_FAMILY, SOCK_STREAM, 0);
if (s < 0) {
perror("socket");
exit(1);
}
if (connect(s, (struct sockaddr *) &host, sizeof host) < 0) {
perror("connect");
exit(1);
}
while ((cnt = read(s, buf, BUFSIZ)) > 0)
write(fileno(stdout), buf, cnt);
(void) close(s);
}
# endif
start_driver()
{
register int procid;
# ifdef MONITOR
if (Am_monitor) {
leave(1, "No one playing.");
/* NOTREACHED */
}
# endif
# ifdef INTERNET
if (Sock_host != NULL) {
sleep(3);
return;
}
# endif
# ifdef USE_CURSES
move(HEIGHT, 0);
# else
mvcur(cur_row, cur_col, HEIGHT, 0);
cur_row = HEIGHT;
cur_col = 0;
# endif
put_str("Starting...");
refresh();
procid = fork();
if (procid == -1) {
perror("fork");
leave(1, "fork failed.");
}
if (procid == 0) {
(void) signal(SIGINT, SIG_IGN);
# ifndef INTERNET
(void) close(Socket);
# else
if (use_port == NULL)
# endif
execl(Driver, "HUNT", (char *) NULL);
# ifdef INTERNET
else
execl(Driver, "HUNT", "-p", use_port, (char *) NULL);
# endif
/* only get here if exec failed */
(void) kill(getppid(), SIGEMT); /* tell mom */
_exit(1);
}
# ifdef USE_CURSES
move(HEIGHT, 0);
# else
mvcur(cur_row, cur_col, HEIGHT, 0);
cur_row = HEIGHT;
cur_col = 0;
# endif
put_str("Connecting...");
refresh();
}
/*
* bad_con:
* We had a bad connection. For the moment we assume that this
* means the game is full.
*/
bad_con()
{
leave(1, "The game is full. Sorry.");
/* NOTREACHED */
}
/*
* bad_ver:
* version number mismatch.
*/
bad_ver()
{
leave(1, "Version number mismatch. No go.");
/* NOTREACHED */
}
/*
* sigterm:
* Handle a terminate signal
*/
SIGNAL_TYPE
sigterm()
{
leave(0, (char *) NULL);
/* NOTREACHED */
}
/*
* sigemt:
* Handle a emt signal - shouldn't happen on vaxes(?)
*/
SIGNAL_TYPE
sigemt()
{
leave(1, "Unable to start driver. Try again.");
/* NOTREACHED */
}
# ifdef INTERNET
/*
* sigalrm:
* Handle an alarm signal
*/
SIGNAL_TYPE
sigalrm()
{
return;
}
# endif
/*
* rmnl:
* Remove a '\n' at the end of a string if there is one
*/
rmnl(s)
char *s;
{
register char *cp;
cp = strrchr(s, '\n');
if (cp != NULL)
*cp = '\0';
}
/*
* intr:
* Handle a interrupt signal
*/
SIGNAL_TYPE
intr()
{
register int ch;
register int explained;
register int y, x;
(void) signal(SIGINT, SIG_IGN);
# ifdef USE_CURSES
getyx(stdscr, y, x);
move(HEIGHT, 0);
# else
y = cur_row;
x = cur_col;
mvcur(cur_row, cur_col, HEIGHT, 0);
cur_row = HEIGHT;
cur_col = 0;
# endif
put_str("Really quit? ");
clear_eol();
refresh();
explained = FALSE;
for (;;) {
ch = getchar();
if (isupper(ch))
ch = tolower(ch);
if (ch == 'y') {
if (Socket != 0) {
(void) write(Socket, "q", 1);
(void) close(Socket);
}
leave(0, (char *) NULL);
}
else if (ch == 'n') {
(void) signal(SIGINT, intr);
# ifdef USE_CURSES
move(y, x);
# else
mvcur(cur_row, cur_col, y, x);
cur_row = y;
cur_col = x;
# endif
refresh();
return;
}
if (!explained) {
put_str("(Yes or No) ");
refresh();
explained = TRUE;
}
beep();
refresh();
}
}
/*
* leave:
* Leave the game somewhat gracefully, restoring all current
* tty stats.
*/
leave(eval, mesg)
int eval;
char *mesg;
{
if (in_visual) {
# ifdef USE_CURSES
move(HEIGHT, 0);
refresh();
endwin();
# else /* !USE_CURSES */
mvcur(cur_row, cur_col, HEIGHT, 0);
(void) fflush(stdout); /* flush in case VE changes pages */
# if defined(BSD_RELEASE) && BSD_RELEASE >= 44
tcsetattr(0, TCSADRAIN, &__orig_termios);
# else
resetty();
# endif
_puts(VE);
_puts(TE);
# endif /* !USE_CURSES */
}
if (mesg != NULL)
puts(mesg);
exit(eval);
}
#if !defined(USE_CURSES) && defined(SIGTSTP)
/*
* tstp:
* Handle stop and start signals
*/
SIGNAL_TYPE
tstp()
{
# if BSD_RELEASE < 44
static struct sgttyb tty;
# endif
int y, x;
y = cur_row;
x = cur_col;
mvcur(cur_row, cur_col, HEIGHT, 0);
cur_row = HEIGHT;
cur_col = 0;
# if !defined(BSD_RELEASE) || BSD_RELEASE < 44
tty = _tty;
# endif
_puts(VE);
_puts(TE);
(void) fflush(stdout);
# if defined(BSD_RELEASE) && BSD_RELEASE >= 44
tcsetattr(0, TCSADRAIN, &__orig_termios);
# else
resetty();
# endif
(void) kill(getpid(), SIGSTOP);
(void) signal(SIGTSTP, tstp);
# if defined(BSD_RELEASE) && BSD_RELEASE >= 44
tcsetattr(0, TCSADRAIN, &saved_tty);
# else
_tty = tty;
ioctl(_tty_ch, TIOCSETP, &_tty);
# endif
_puts(TI);
_puts(VS);
cur_row = y;
cur_col = x;
_puts(tgoto(CM, cur_row, cur_col));
redraw_screen();
(void) fflush(stdout);
}
#endif /* !defined(USE_CURSES) && defined(SIGTSTP) */
# if defined(BSD_RELEASE) && BSD_RELEASE < 43
char *
strpbrk(s, brk)
register char *s, *brk;
{
register char *p;
register c;
while (c = *s) {
for (p = brk; *p; p++)
if (c == *p)
return (s);
s++;
}
return (0);
}
# endif
long
env_init(enter_status)
long enter_status;
{
register int i;
char *envp, *envname, *s;
for (i = 0; i < 256; i++)
map_key[i] = (char) i;
envname = NULL;
if ((envp = getenv("HUNT")) != NULL) {
while ((s = strpbrk(envp, "=,")) != NULL) {
if (strncmp(envp, "cloak,", s - envp + 1) == 0) {
enter_status = Q_CLOAK;
envp = s + 1;
}
else if (strncmp(envp, "scan,", s - envp + 1) == 0) {
enter_status = Q_SCAN;
envp = s + 1;
}
else if (strncmp(envp, "fly,", s - envp + 1) == 0) {
enter_status = Q_FLY;
envp = s + 1;
}
else if (strncmp(envp, "nobeep,", s - envp + 1) == 0) {
no_beep = TRUE;
envp = s + 1;
}
else if (strncmp(envp, "name=", s - envp + 1) == 0) {
envname = s + 1;
if ((s = strchr(envp, ',')) == NULL) {
*envp = '\0';
strncpy(name, envname, NAMELEN);
break;
}
*s = '\0';
strncpy(name, envname, NAMELEN);
envp = s + 1;
}
# ifdef INTERNET
else if (strncmp(envp, "port=", s - envp + 1) == 0) {
use_port = s + 1;
Test_port = atoi(use_port);
if ((s = strchr(envp, ',')) == NULL) {
*envp = '\0';
break;
}
*s = '\0';
envp = s + 1;
}
else if (strncmp(envp, "host=", s - envp + 1) == 0) {
Sock_host = s + 1;
if ((s = strchr(envp, ',')) == NULL) {
*envp = '\0';
break;
}
*s = '\0';
envp = s + 1;
}
else if (strncmp(envp, "message=", s - envp + 1) == 0) {
Send_message = s + 1;
if ((s = strchr(envp, ',')) == NULL) {
*envp = '\0';
break;
}
*s = '\0';
envp = s + 1;
}
# endif
else if (strncmp(envp, "team=", s - envp + 1) == 0) {
team = *(s + 1);
if (!isdigit(team))
team = ' ';
if ((s = strchr(envp, ',')) == NULL) {
*envp = '\0';
break;
}
*s = '\0';
envp = s + 1;
} /* must be last option */
else if (strncmp(envp, "mapkey=", s - envp + 1) == 0) {
for (s = s + 1; *s != '\0'; s += 2) {
map_key[(unsigned int) *s] = *(s + 1);
if (*(s + 1) == '\0') {
break;
}
}
*envp = '\0';
break;
} else {
*s = '\0';
printf("unknown option %s\n", envp);
if ((s = strchr(envp, ',')) == NULL) {
*envp = '\0';
break;
}
envp = s + 1;
}
}
if (*envp != '\0')
if (envname == NULL)
strncpy(name, envp, NAMELEN);
else
printf("unknown option %s\n", envp);
}
return enter_status;
}
fill_in_blanks()
{
register int i;
register char *cp;
again:
if (name[0] != '\0') {
printf("Entering as '%s'", name);
if (team != ' ')
printf(" on team %c.\n", team);
else
putchar('\n');
} else {
printf("Enter your code name: ");
if (fgets(name, NAMELEN, stdin) == NULL)
exit(1);
}
rmnl(name);
if (name[0] == '\0') {
name[0] = '\0';
printf("You have to have a code name!\n");
goto again;
}
for (cp = name; *cp != '\0'; cp++)
if (!isprint(*cp)) {
name[0] = '\0';
printf("Illegal character in your code name.\n");
goto again;
}
if (team == ' ') {
printf("Enter your team (0-9 or nothing): ");
i = getchar();
if (isdigit(i))
team = i;
while (i != '\n' && i != EOF)
i = getchar();
}
}