1188 lines
26 KiB
C
1188 lines
26 KiB
C
/* nethacklaunch.c
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*
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* (c)2001-3 M. Drew Streib <dtype@dtype.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* See this in program action at http://dtype.org/nethack/
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*
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* This is a little wrapper for nethack (and soon other programs) that
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* will allow them to be run from a telnetd session, chroot, shed privs,
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* make a simple login, then play the game.
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*
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* By default, this thing is also statically compiled, and can thus be
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* run inside of a chroot jail itself if necessary.
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*
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* Yes, I know it is all global variables. Deal with it. The program
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* is very small.
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*/
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#define _GNU_SOURCE
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#include "dgamelaunch.h"
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/* a request from the author: please leave some remnance of
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* 'based on dgamelaunch version xxx' in any derivative works, or
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* even keep the line the same altogether. I'm probably happy
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* to make any changes you need. */
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/* ************************************************************* */
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/* ************************************************************* */
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/* ************************************************************* */
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/* program stuff */
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#include <stdlib.h>
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#include <curses.h>
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#include <sys/types.h>
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#include <sys/file.h> /* for flock() */
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#include <sys/time.h>
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#ifndef __FreeBSD__
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# include <crypt.h>
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#else
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# include <libutil.h>
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#endif
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#ifdef __linux__
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# include <pty.h>
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#endif
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#include <grp.h>
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#include <time.h>
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#include <sys/resource.h>
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#include <sys/ioctl.h> /* ttyrec */
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#include <errno.h>
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#include <dirent.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <assert.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <termios.h>
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extern int vi_main (int argc, char **argv);
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extern int ttyplay_main (char *ttyfile, int mode, int rstripgfx);
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extern int ttyrec_main (char *);
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extern int master;
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extern int slave;
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extern struct termios tt;
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extern struct winsize win;
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/* global variables */
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int pid_game = 0;
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int loggedin = 0;
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char rcfilename[80];
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char ttyrec_filename[100];
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char *chosen_name;
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int f_num = 0;
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struct dg_user **users = NULL;
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struct dg_user *me = NULL;
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struct dg_banner banner;
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/* ************************************************************* */
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/* for ttyrec */
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void
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ttyrec_getmaster ()
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{
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(void) tcgetattr (0, &tt);
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(void) ioctl (0, TIOCGWINSZ, (char *) &win);
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#ifdef USE_OPENPTY
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if (openpty(&master, &slave, NULL, &tt, &win) == -1)
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#else
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if ((master = open ("/dev/ptmx", O_RDWR)) < 0)
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#endif
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exit (62);
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}
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/* ************************************************************* */
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void
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gen_ttyrec_filename ()
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{
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time_t rawtime;
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struct tm *ptm;
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/* append time to filename */
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time (&rawtime);
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ptm = gmtime (&rawtime);
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snprintf (ttyrec_filename, 100, "%04i-%02i-%02i.%02i:%02i:%02i.ttyrec",
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ptm->tm_year + 1900, ptm->tm_mon + 1, ptm->tm_mday,
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ptm->tm_hour, ptm->tm_min, ptm->tm_sec);
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}
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/* ************************************************************* */
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void
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gen_inprogress_lock ()
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{
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char lockfile[130];
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int fd;
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snprintf (lockfile, 130, "%s%s:%s", LOC_INPROGRESSDIR,
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me->username, ttyrec_filename);
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fd = open (lockfile, O_WRONLY | O_CREAT, 0644);
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if (flock (fd, LOCK_EX))
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exit (68);
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}
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/* ************************************************************* */
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void
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catch_sighup (int signum)
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{
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if (pid_game)
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{
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sleep (10);
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kill (pid_game, SIGHUP);
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sleep (5);
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}
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exit (2);
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}
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/* ************************************************************* */
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void
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loadbanner (struct dg_banner *ban)
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{
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FILE *bannerfile;
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char buf[80];
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memset (buf, 0, 80);
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bannerfile = fopen (LOC_BANNER, "r");
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if (!bannerfile)
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{
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ban->len = 2;
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ban->lines = malloc (sizeof (char *));
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ban->lines[0] =
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strdup ("### dgamelaunch " VERSION
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" - network console game launcher");
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ban->lines[1] =
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strdup
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("### NOTE: administrator has not installed a /dgl-banner file");
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return;
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}
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ban->len = 0;
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while (fgets (buf, 80, bannerfile) != NULL)
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{
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char *loc;
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ban->len++;
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ban->lines = realloc (ban->lines, sizeof (char *) * ban->len);
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if ((loc = strstr (buf, "$VERSION")) != NULL)
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{
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char bufnew[80];
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char *b = buf;
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int i;
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memset (bufnew, 0, 80);
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for (i = 0; i < 80; i++)
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{
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if (loc != b)
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bufnew[i] = *(b++);
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else
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{
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strncat (bufnew, VERSION, 80 - i);
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b += 8; /* skip the whole $VERSION string */
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i += sizeof (VERSION) / sizeof (VERSION[0]);
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}
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if (strlen (b) == 0)
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break;
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}
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ban->lines[ban->len - 1] = strdup (bufnew);
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}
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else
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ban->lines[ban->len - 1] = strdup (buf);
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memset (buf, 0, 80);
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if (ban->len == 14) /* menu itself needs 10 lines, 24 - 10 */
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break;
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}
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fclose (bannerfile);
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}
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void
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drawbanner (unsigned int start_line, unsigned int howmany)
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{
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static short loaded_banner = 0;
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unsigned int i;
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if (!loaded_banner)
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{
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loadbanner (&banner);
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loaded_banner = 1;
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}
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if (howmany > banner.len || howmany == 0)
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howmany = banner.len;
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for (i = 0; i < howmany; i++)
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mvaddstr (start_line + i, 1, banner.lines[i]);
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}
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struct dg_game **
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populate_games (int *l)
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{
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int fd, len;
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DIR *pdir;
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struct dirent *pdirent;
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struct stat pstat;
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char fullname[130], ttyrecname[130];
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char *replacestr;
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struct dg_game **games = NULL;
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len = 0;
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if (!(pdir = opendir (LOC_INPROGRESSDIR)))
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exit (140);
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while ((pdirent = readdir (pdir)))
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{
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snprintf (fullname, 130, "%s%s", LOC_INPROGRESSDIR, pdirent->d_name);
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fd = 0;
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fd = open (fullname, O_RDONLY);
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if ((fd > 0) && flock (fd, LOCK_EX | LOCK_NB))
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{
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/* stat to check idle status */
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snprintf (ttyrecname, 130, "%s%s", LOC_TTYRECDIR, pdirent->d_name);
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replacestr = strchr (ttyrecname, ':');
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if (!replacestr)
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exit (145);
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replacestr[0] = '/';
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if (!stat (ttyrecname, &pstat))
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{
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/* now it's a valid game for sure */
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games = realloc (games, sizeof (struct dg_game) * (len + 1));
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games[len] = malloc (sizeof (struct dg_game));
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games[len]->ttyrec_fn = strdup (pdirent->d_name);
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if (!(replacestr = strchr (pdirent->d_name, ':')))
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exit (146);
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else
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*replacestr = '\0';
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games[len]->name = malloc (strlen (pdirent->d_name) + 1);
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strncpy (games[len]->name, pdirent->d_name,
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strlen (pdirent->d_name) + 1);
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games[len]->date = malloc (11);
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strncpy (games[len]->date, replacestr + 1, 10);
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games[len]->time = malloc (9);
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strncpy (games[len]->time, replacestr + 12, 8);
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games[len]->idle_time = pstat.st_mtime;
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len++;
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}
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}
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else
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{
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/* clean dead ones */
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unlink (fullname);
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}
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flock (fd, LOCK_UN | LOCK_NB);
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close (fd);
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}
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closedir (pdir);
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*l = len;
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return games;
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}
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void
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inprogressmenu ()
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{
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int i, menuchoice, len = 20, offset = 0;
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time_t ctime;
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struct dg_game **games;
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char ttyrecname[130], *replacestr = NULL;
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games = populate_games (&len);
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while (1)
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{
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clear ();
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drawbanner (1, 1);
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mvprintw (3, 1,
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"During playback, hit 'q' to return here%s.",
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loggedin ? ", 'm' to contact the player" : "");
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mvaddstr (4, 1,
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"(Use capital letter of selection to strip DEC graphics, VERY experimental!)");
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mvaddstr (5, 1, "The following games are in progress:");
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/* clean old games and list good ones */
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i = 0;
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for (i = 0; i < 14; i++)
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{
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if (i + offset >= len)
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break;
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mvprintw (7 + i, 1, "%c) %-15s %s %s (%ldm %lds idle)",
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i + 97, games[i + offset]->name,
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games[i + offset]->date, games[i + offset]->time,
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(time (&ctime) - games[i + offset]->idle_time) / 60,
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(time (&ctime) - games[i + offset]->idle_time) % 60);
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}
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mvaddstr (23, 1,
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"Watch which game? (r refreshes, q quits, d/u for more/less) => ");
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refresh ();
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switch ((menuchoice = tolower (getch ())))
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{
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case 'd':
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if ((offset + 14) >= len)
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break;
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else
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offset += 14;
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break;
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case 'u':
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if ((offset - 14) < 0)
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break;
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else
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offset -= 14;
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break;
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case 'q':
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return;
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default:
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if ((menuchoice - 97) >= 0 && (menuchoice - 97) < i)
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{
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/* valid choice has been made */
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snprintf (ttyrecname, 130, "%s%s", LOC_TTYRECDIR,
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games[menuchoice - 97]->ttyrec_fn);
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chosen_name = strdup (games[menuchoice - 97 + offset]->name);
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/* reuse thie char* */
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replacestr = strchr (ttyrecname, ':');
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if (!replacestr)
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exit (145);
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replacestr[0] = '/';
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clear ();
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refresh ();
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endwin ();
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ttyplay_main (ttyrecname, 1, 0);
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}
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}
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games = populate_games (&len);
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}
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}
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/* ************************************************************* */
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void
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changepw ()
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{
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char buf[21];
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int error = 2;
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/* A precondiction is that struct `me' exists because we can be not-yet-logged-in. */
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if (!me)
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exit (122); /* Die. */
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while (error)
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{
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char repeatbuf[21];
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clear ();
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drawbanner (1, 1);
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mvprintw (5, 1,
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"Please enter a%s password. Remember that this is sent over the net",
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loggedin ? " new" : "");
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mvaddstr (6, 1,
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"in plaintext, so make it something new and expect it to be relatively");
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mvaddstr (7, 1, "insecure.");
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mvaddstr (8, 1,
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"20 character max. No ':' characters. Blank line to abort.");
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mvaddstr (10, 1, "=> ");
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if (error == 1)
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{
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mvaddstr (15, 1, "Sorry, the passwords don't match. Try again.");
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move (10, 4);
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}
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refresh ();
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noecho ();
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getnstr (buf, 20);
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echo (); /* Putting echo back on just for saftey and because it can't hurt. */
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if (buf && *buf == '\0')
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return;
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if (strchr (buf, ':') != NULL)
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exit (112);
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mvaddstr (12, 1, "And again:");
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mvaddstr (13, 1, "=> ");
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noecho ();
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getnstr (repeatbuf, 20);
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echo (); /* Here is the important echo(); if the former is removed. */
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if (!strcmp (buf, repeatbuf))
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error = 0;
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else
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error = 1;
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}
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me->password = strdup (crypt (buf, buf));
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writefile (0);
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}
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/* ************************************************************* */
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void
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domailuser (char *username)
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{
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unsigned int len, i;
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char *spool_fn, message[80];
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FILE *user_spool = NULL;
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time_t now;
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int mail_empty = 1;
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struct flock fl = { F_WRLCK, SEEK_SET, 0, 0, getpid () };
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assert (loggedin);
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len =
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(sizeof (LOC_SPOOLDIR) / sizeof (LOC_SPOOLDIR[0])) + strlen (username) +
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1;
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spool_fn = malloc (len + 1);
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time (&now);
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snprintf (spool_fn, len, "%s/%s", LOC_SPOOLDIR, username);
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/* print the enter your message line */
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clear ();
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drawbanner (1, 1);
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mvaddstr (5, 1,
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"Enter your message here. It is to be one line only and 80 characters or less.");
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mvaddstr (7, 1, "=> ");
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getnstr (message, 80);
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for (i = 0; i < strlen (message); i++)
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{
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if (message[i] != ' ' && message[i] != '\n' && message[i] != '\t')
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mail_empty = 0;
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}
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if (mail_empty)
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{
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mvaddstr (9, 1, "This scroll appears to be blank.--More--");
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mvaddstr (10, 1, "(Aborting your message.)");
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getch ();
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return;
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}
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if ((user_spool = fopen (spool_fn, "a")) == NULL)
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{
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mvaddstr (9, 1,
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"You fall into the water! You sink like a rock.--More--");
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mvprintw (10, 1,
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"(I couldn't open %s'%c spool file for some reason, so I'm giving up.)",
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username, (username[strlen (username) - 1] != 's') ? 's' : 0);
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getch ();
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return;
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}
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mvaddstr (9, 1, "Getting a lock on the mailspool...");
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refresh ();
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while (fcntl (fileno (user_spool), F_SETLK, &fl) == -1);
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fprintf (user_spool, "%s:%s\n", me->username, message);
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fl.l_type = F_UNLCK;
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if (fcntl (fileno (user_spool), F_UNLCK, &fl) == -1)
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mvaddstr (10, 1, "Couldn't unlock the file! Oh well.");
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fclose (user_spool);
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return;
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}
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|
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void
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drawmenu ()
|
|
{
|
|
static int flood = 0;
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|
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clear ();
|
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|
|
drawbanner (1, 0);
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|
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if (loggedin)
|
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{
|
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mvprintw (banner.len + 2, 1, "Logged in as: %s", me->username);
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|
mvaddstr (banner.len + 4, 1, "c) Change password");
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mvaddstr (banner.len + 5, 1, "o) Edit option file (requires vi use)");
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mvaddstr (banner.len + 6, 1, "w) Watch games in progress");
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mvaddstr (banner.len + 7, 1, "p) Play nethack!");
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mvaddstr (banner.len + 8, 1, "q) Quit");
|
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mvaddstr (banner.len + 10, 1, "=> ");
|
|
}
|
|
else
|
|
{
|
|
mvaddstr (banner.len + 2, 1, "Not logged in.");
|
|
mvaddstr (banner.len + 4, 1, "l) Login");
|
|
mvaddstr (banner.len + 5, 1, "r) Register new user");
|
|
mvaddstr (banner.len + 6, 1, "w) Watch games in progress");
|
|
mvaddstr (banner.len + 7, 1, "q) Quit");
|
|
mvaddstr (banner.len + 9, 1, "=> ");
|
|
}
|
|
|
|
refresh ();
|
|
|
|
/* for retarded clients */
|
|
flood++;
|
|
if (flood >= 20)
|
|
exit (119);
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
void
|
|
freefile ()
|
|
{
|
|
int i;
|
|
|
|
/* free existing mem, clear existing entries */
|
|
for (i = 0; i < f_num; i++)
|
|
{
|
|
free (users[i]->password);
|
|
free (users[i]->username);
|
|
free (users[i]->email);
|
|
free (users[i]->env);
|
|
free (users[i]);
|
|
}
|
|
|
|
if (users)
|
|
free (users);
|
|
|
|
users = NULL;
|
|
f_num = 0;
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
void
|
|
initncurses ()
|
|
{
|
|
initscr ();
|
|
cbreak ();
|
|
echo ();
|
|
nonl ();
|
|
intrflush (stdscr, FALSE);
|
|
keypad (stdscr, TRUE);
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
struct dg_user *
|
|
deep_copy (struct dg_user *src)
|
|
{
|
|
struct dg_user *dest = malloc (sizeof (struct dg_user));
|
|
|
|
dest->username = strdup (src->username);
|
|
dest->email = strdup (src->email);
|
|
dest->env = strdup (src->env);
|
|
dest->password = strdup (src->password);
|
|
dest->flags = src->flags;
|
|
|
|
return dest;
|
|
}
|
|
|
|
void
|
|
loginprompt ()
|
|
{
|
|
char user_buf[22], pw_buf[22];
|
|
int error = 2, me_index = -1;
|
|
|
|
loggedin = 0;
|
|
|
|
while (error)
|
|
{
|
|
clear ();
|
|
|
|
drawbanner (1, 1);
|
|
|
|
mvaddstr (5, 1,
|
|
"Please enter your username. (blank entry returns to main menu)");
|
|
mvaddstr (7, 1, "=> ");
|
|
|
|
if (error == 1)
|
|
{
|
|
mvaddstr (9, 1, "There was a problem with your last entry.");
|
|
move (7, 4);
|
|
}
|
|
|
|
refresh ();
|
|
|
|
getnstr (user_buf, 20);
|
|
|
|
if (user_buf && *user_buf == '\0')
|
|
return;
|
|
|
|
error = 1;
|
|
|
|
if ((me_index = userexist (user_buf)) != -1)
|
|
{
|
|
me = deep_copy (users[me_index]);
|
|
error = 0;
|
|
}
|
|
}
|
|
|
|
clear ();
|
|
|
|
drawbanner (1, 1);
|
|
|
|
mvaddstr (5, 1, "Please enter your password.");
|
|
mvaddstr (7, 1, "=> ");
|
|
|
|
refresh ();
|
|
|
|
noecho ();
|
|
getnstr (pw_buf, 20);
|
|
echo ();
|
|
|
|
if (passwordgood (pw_buf))
|
|
{
|
|
loggedin = 1;
|
|
snprintf (rcfilename, 80, "%s%s.nethackrc", LOC_DGLDIR, me->username);
|
|
}
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
void
|
|
newuser ()
|
|
{
|
|
char buf[1024];
|
|
int error = 2;
|
|
unsigned int i;
|
|
|
|
loggedin = 0;
|
|
|
|
if (me)
|
|
free (me);
|
|
|
|
me = malloc (sizeof (struct dg_user));
|
|
|
|
while (error)
|
|
{
|
|
clear ();
|
|
|
|
drawbanner (1, 1);
|
|
|
|
mvaddstr (5, 1, "Welcome new user. Please enter a username.");
|
|
mvaddstr (6, 1,
|
|
"Only characters and numbers are allowed, with no spaces.");
|
|
mvaddstr (7, 1, "20 character max.");
|
|
mvaddstr (9, 1, "=> ");
|
|
|
|
if (error == 1)
|
|
{
|
|
mvaddstr (11, 1, "There was a problem with your last entry.");
|
|
move (9, 4);
|
|
}
|
|
|
|
refresh ();
|
|
|
|
getnstr (buf, 20);
|
|
if (userexist (buf) == -1)
|
|
error = 0;
|
|
else
|
|
error = 1;
|
|
|
|
for (i = 0; i < strlen (buf); i++)
|
|
{
|
|
if (!
|
|
(((buf[i] >= 'a') && (buf[i] <= 'z'))
|
|
|| ((buf[i] >= 'A') && (buf[i] <= 'Z')) || ((buf[i] >= '0')
|
|
&& (buf[i] <=
|
|
'9'))))
|
|
error = 1;
|
|
}
|
|
|
|
if (strlen (buf) < 2)
|
|
error = 1;
|
|
|
|
if (strlen (buf) == 0)
|
|
return;
|
|
}
|
|
|
|
me->username = strdup (buf);
|
|
|
|
/* password step */
|
|
|
|
clear ();
|
|
|
|
changepw (); /* Calling changepw instead to prompt twice. */
|
|
|
|
/* email step */
|
|
|
|
clear ();
|
|
|
|
drawbanner (1, 1);
|
|
|
|
mvaddstr (5, 1, "Please enter your email address.");
|
|
mvaddstr (6, 1,
|
|
"This is sent _nowhere_ but will be used if you ask the sysadmin for lost");
|
|
mvaddstr (7, 1,
|
|
"password help. Please use a correct one. It only benefits you.");
|
|
mvaddstr (8, 1, "80 character max. No ':' characters.");
|
|
mvaddstr (10, 1, "=> ");
|
|
|
|
refresh ();
|
|
getnstr (buf, 80);
|
|
|
|
if (strchr (buf, ':') != NULL)
|
|
exit (113);
|
|
|
|
me->email = strdup (buf);
|
|
me->env = calloc (1, 1);
|
|
|
|
loggedin = 1;
|
|
|
|
snprintf (rcfilename, 80, "%s%s.nethackrc", LOC_DGLDIR, me->username);
|
|
write_canned_rcfile (rcfilename);
|
|
|
|
writefile (1);
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
int
|
|
passwordgood (char *cpw)
|
|
{
|
|
if (me == NULL)
|
|
return 1;
|
|
|
|
if (!strncmp (crypt (cpw, cpw), me->password, 13))
|
|
return 1;
|
|
if (!strncmp (cpw, me->password, 20))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
int
|
|
readfile (int nolock)
|
|
{
|
|
FILE *fp = NULL, *fpl = NULL;
|
|
char buf[1200];
|
|
|
|
memset (buf, 1024, 0);
|
|
|
|
/* read new stuff */
|
|
|
|
if (!nolock)
|
|
{
|
|
fpl = fopen ("/dgl-lock", "r");
|
|
if (!fpl)
|
|
exit (106);
|
|
if (flock (fileno (fpl), LOCK_SH))
|
|
exit (114);
|
|
}
|
|
|
|
fp = fopen ("/dgl-login", "r");
|
|
if (!fp)
|
|
exit (106);
|
|
|
|
/* once per name in the file */
|
|
while (fgets (buf, 1200, fp))
|
|
{
|
|
char *b = buf, *n = buf;
|
|
|
|
users = realloc (users, sizeof (struct dg_user *) * (f_num + 1));
|
|
users[f_num] = malloc (sizeof (struct dg_user));
|
|
users[f_num]->username = (char *) calloc (22, sizeof (char));
|
|
users[f_num]->email = (char *) calloc (82, sizeof (char));
|
|
users[f_num]->password = (char *) calloc (22, sizeof (char));
|
|
users[f_num]->env = (char *) calloc (1026, sizeof (char));
|
|
|
|
/* name field, must be valid */
|
|
while (*b != ':')
|
|
{
|
|
if (!(((*b >= 'a') && (*b <= 'z')) || ((*b >= 'A') && (*b <= 'Z'))
|
|
|| ((*b >= '0') && (*b <= '9'))))
|
|
return 1;
|
|
users[f_num]->username[(b - n)] = *b;
|
|
b++;
|
|
if ((b - n) >= 21)
|
|
exit (100);
|
|
}
|
|
|
|
/* advance to next field */
|
|
n = b + 1;
|
|
b = n;
|
|
|
|
/* email field */
|
|
while (*b != ':')
|
|
{
|
|
users[f_num]->email[(b - n)] = *b;
|
|
b++;
|
|
if ((b - n) > 80)
|
|
exit (101);
|
|
}
|
|
|
|
/* advance to next field */
|
|
n = b + 1;
|
|
b = n;
|
|
|
|
/* pw field */
|
|
while (*b != ':')
|
|
{
|
|
users[f_num]->password[(b - n)] = *b;
|
|
b++;
|
|
if ((b - n) >= 20)
|
|
exit (102);
|
|
}
|
|
|
|
/* advance to next field */
|
|
n = b + 1;
|
|
b = n;
|
|
|
|
/* env field */
|
|
while ((*b != '\n') && (*b != 0) && (*b != EOF))
|
|
{
|
|
users[f_num]->env[(b - n)] = *b;
|
|
b++;
|
|
if ((b - n) >= 1024)
|
|
exit (102);
|
|
}
|
|
|
|
f_num++;
|
|
/* prevent a buffer overrun here */
|
|
if (f_num >= MAXUSERS)
|
|
exit (109);
|
|
}
|
|
|
|
if (!nolock)
|
|
{
|
|
flock (fileno (fpl), LOCK_UN);
|
|
fclose (fpl);
|
|
}
|
|
fclose (fp);
|
|
return 0;
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
int
|
|
userexist (char *cname)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < f_num; i++)
|
|
{
|
|
if (!strncasecmp (cname, users[i]->username, 20))
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
void
|
|
write_canned_rcfile (char *target)
|
|
{
|
|
FILE *canned, *newfile;
|
|
char buf[1024];
|
|
size_t bytes;
|
|
|
|
if (!(newfile = fopen (target, "w")))
|
|
{
|
|
bail:
|
|
mvaddstr (13, 1,
|
|
"You don't know how to write that! You write \"%s\" was here and the scroll disappears.");
|
|
mvaddstr (14, 1,
|
|
"(Sorry, but I couldn't open one of the nethackrc files. This is a bug.)");
|
|
return;
|
|
}
|
|
|
|
if (!(canned = fopen (LOC_CANNED, "r")))
|
|
goto bail;
|
|
|
|
while ((bytes = fread (buf, 1, 1024, canned)) > 0)
|
|
{
|
|
if (fwrite (buf, 1, bytes, newfile) != bytes)
|
|
{
|
|
if (ferror (newfile))
|
|
{
|
|
mvaddstr (13, 1, "Your hand slips while engraving.");
|
|
mvaddstr (14, 1,
|
|
"(Encountered a problem writing the new file. This is a bug.)");
|
|
fclose (canned);
|
|
fclose (newfile);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
fclose (canned);
|
|
fclose (newfile);
|
|
}
|
|
|
|
|
|
void
|
|
editoptions ()
|
|
{
|
|
FILE *rcfile;
|
|
char *myargv[3];
|
|
|
|
rcfile = fopen (rcfilename, "r");
|
|
printf (" read");
|
|
if (!rcfile) /* should not really happen except for old users */
|
|
write_canned_rcfile (rcfilename);
|
|
|
|
/* use virus to edit */
|
|
|
|
myargv[0] = "";
|
|
myargv[1] = rcfilename;
|
|
myargv[2] = 0;
|
|
|
|
endwin ();
|
|
vi_main (2, myargv);
|
|
refresh ();
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
|
|
void
|
|
writefile (int requirenew)
|
|
{
|
|
FILE *fp, *fpl;
|
|
int i = 0;
|
|
int my_done = 0;
|
|
|
|
fpl = fopen ("/dgl-lock", "r");
|
|
if (!fpl)
|
|
exit (115);
|
|
if (flock (fileno (fpl), LOCK_EX))
|
|
exit (107);
|
|
|
|
freefile ();
|
|
readfile (1);
|
|
|
|
fp = fopen ("/dgl-login", "w");
|
|
if (!fp)
|
|
exit (104);
|
|
|
|
for (i = 0; i < f_num; i++)
|
|
{
|
|
if (loggedin && !strncasecmp (me->username, users[i]->username, 20))
|
|
{
|
|
if (requirenew)
|
|
{
|
|
/* this is if someone managed to register at the same time
|
|
* as someone else. just die. */
|
|
exit (111);
|
|
}
|
|
fprintf (fp, "%s:%s:%s:%s\n", me->username, me->email, me->password,
|
|
me->env);
|
|
my_done = 1;
|
|
}
|
|
else
|
|
{
|
|
fprintf (fp, "%s:%s:%s:%s\n", users[i]->username, users[i]->email,
|
|
users[i]->password, users[i]->env);
|
|
}
|
|
}
|
|
if (loggedin && !my_done)
|
|
{ /* new entry */
|
|
fprintf (fp, "%s:%s:%s:%s\n", me->username, me->email, me->password,
|
|
me->env);
|
|
}
|
|
|
|
flock (fileno (fpl), LOCK_UN);
|
|
fclose (fp);
|
|
fclose (fpl);
|
|
}
|
|
|
|
/* ************************************************************* */
|
|
/* ************************************************************* */
|
|
/* ************************************************************* */
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
/* for chroot and program execution */
|
|
uid_t newuid = SHED_UID;
|
|
gid_t newgid = SHED_GID;
|
|
char atrcfilename[81], *spool;
|
|
unsigned int len;
|
|
struct rlimit rl = { RLIM_INFINITY, RLIM_INFINITY };
|
|
|
|
int userchoice = 0;
|
|
|
|
/* coredumper */
|
|
setrlimit (RLIMIT_CORE, &rl);
|
|
|
|
/* signal handlers */
|
|
signal (SIGHUP, catch_sighup);
|
|
|
|
/* get master tty just before chroot (lives in /dev) */
|
|
ttyrec_getmaster ();
|
|
#ifndef USE_OPENPTY
|
|
grantpt (master);
|
|
unlockpt (master);
|
|
if ((slave = open ((const char *) ptsname (master), O_RDWR)) < 0)
|
|
{
|
|
exit (65);
|
|
}
|
|
#endif
|
|
|
|
|
|
/* chroot */
|
|
if (chroot (LOC_CHROOT))
|
|
{
|
|
perror ("cannot change root directory");
|
|
exit (1);
|
|
}
|
|
|
|
if (chdir ("/"))
|
|
{
|
|
perror ("cannot chdir to root directory");
|
|
exit (1);
|
|
}
|
|
|
|
/* shed privs. this is done immediately after chroot. */
|
|
if (setgroups(1, &newgid) == -1)
|
|
{
|
|
perror("setgroups");
|
|
exit(1);
|
|
}
|
|
|
|
if (setgid (newgid) == -1)
|
|
{
|
|
perror("setgid");
|
|
exit(1);
|
|
}
|
|
|
|
if (setuid (newuid) == -1)
|
|
{
|
|
perror("setuid");
|
|
exit(1);
|
|
}
|
|
|
|
/* simple login routine, uses ncurses */
|
|
if (readfile (0))
|
|
exit (110);
|
|
|
|
initncurses ();
|
|
while ((userchoice != 'p') | (!loggedin))
|
|
{
|
|
drawmenu ();
|
|
userchoice = getch ();
|
|
switch (tolower (userchoice))
|
|
{
|
|
case 'c':
|
|
if (loggedin)
|
|
changepw ();
|
|
break;
|
|
case 'w':
|
|
inprogressmenu ();
|
|
break;
|
|
case 'o':
|
|
if (loggedin)
|
|
editoptions ();
|
|
break;
|
|
case 'q':
|
|
endwin ();
|
|
return 0;
|
|
/* break; */
|
|
case 'r':
|
|
if (!loggedin) /*not visible to loggedin */
|
|
newuser ();
|
|
break;
|
|
case 'l':
|
|
if (!loggedin) /* not visible to loggedin */
|
|
loginprompt ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
assert (loggedin);
|
|
|
|
endwin ();
|
|
|
|
/* environment */
|
|
snprintf (atrcfilename, 81, "@%s", rcfilename);
|
|
|
|
len =
|
|
(sizeof (LOC_SPOOLDIR) / sizeof (LOC_SPOOLDIR[0])) +
|
|
strlen (me->username) + 1;
|
|
spool = malloc (len + 1);
|
|
snprintf (spool, len, "%s/%s", LOC_SPOOLDIR, me->username);
|
|
|
|
setenv ("NETHACKOPTIONS", atrcfilename, 1);
|
|
setenv ("MAIL", spool, 1);
|
|
setenv ("SIMPLEMAIL", "1", 1);
|
|
|
|
/* don't let the mail file grow */
|
|
if (access (spool, F_OK) == 0)
|
|
unlink (spool);
|
|
|
|
free (spool);
|
|
|
|
/* lock */
|
|
gen_ttyrec_filename ();
|
|
gen_inprogress_lock ();
|
|
|
|
/* launch program */
|
|
ttyrec_main (me->username);
|
|
|
|
/* NOW we can safely kill this */
|
|
freefile ();
|
|
|
|
if (me)
|
|
free (me);
|
|
|
|
exit (1);
|
|
return 1;
|
|
}
|