git.pond.sub.org Git - empserver/blob - src/lib/player/player.c

   1 /*
   2  *  Empire - A multi-player, client/server Internet based war game.
   3  *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
   4  *                           Ken Stevens, Steve McClure
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  *  ---
  21  *
  22  *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
  23  *  related information and legal notices. It is expected that any future
  24  *  projects/authors will amend these files as needed.
  25  *
  26  *  ---
  27  *
  28  *  player.c: Main command loop for a player
  29  *
  30  *  Known contributors to this file:
  31  *     Steve McClure, 2000
  32  *
  33  */
  34
  35 #include "prototypes.h"
  36 #include <string.h>
  37 #include "gamesdef.h"
  38 #include "misc.h"
  39 #include "player.h"
  40 #include "proto.h"
  41 #include "var.h"
  42 #include "com.h"
  43 #include "nat.h"
  44 #include "sect.h"
  45 #include "deity.h"
  46 #include "file.h"
  47 #include "proto.h"
  48 #include "empio.h"
  49 #include "empthread.h"
  50 #include "tel.h"
  51 #include "gen.h"
  52 #include "subs.h"
  53 #include "common.h"
  54
  55 #if !defined(_WIN32)
  56 #include <unistd.h>
  57 #include <sys/time.h>
  58 #endif
  59 #include <stdio.h>
  60 #include <fcntl.h>
  61
  62 struct  player *player;
  63 extern  int m_m_p_d;
  64
  65 void
  66 player_main(struct player *p)
  67 {
  68         extern  s_char *authfil;
  69         struct  natstr *natp;
  70         int     hour[2];
  71         int     secs;
  72         s_char  buf[128];
  73
  74         p->state = PS_PLAYING;
  75         player = p;
  76         time(&player->lasttime);
  77         (void) time(&player->curup);
  78         showvers(CLIENTPROTO);
  79         show_motd();
  80         if (init_nats() < 0)
  81                 return;
  82         natp = getnatp(player->cnum);
  83         if (player->god &&
  84             !match_user(authfil, player)) {
  85                 logerror("NON-AUTHed Login attempted by %s",
  86                          praddr(player));
  87                 pr("You're not a deity!\n");
  88                 return;
  89         }
  90         if (!gamehours(player->curup, hour)) {
  91                 pr("Empire hours restriction in force\n");
  92                 if ((natp->nat_stat & STAT_GOD) == 0)
  93                         return;
  94         }
  95         daychange(player->curup);
  96         if ((player->minleft = getminleft(player->curup, hour, &m_m_p_d)) <= 0){
  97                 pr("Time exceeded today\n");
  98                 return;
  99         }
 100         if ((*natp->nat_hostaddr &&
 101              *player->hostaddr &&
 102              strcmp(natp->nat_hostaddr, player->hostaddr)) ||
 103             (*natp->nat_userid &&
 104              *player->userid &&
 105              strcmp(natp->nat_userid, player->userid))) {
 106             if (natp->nat_stat != VIS) {
 107                 pr("Last connection from: %s", ctime(&natp->nat_last_login));
 108                 pr("                  to: %s", natp->nat_last_login <
 109                    natp->nat_last_logout ? ctime(&natp->nat_last_logout):"?");
 110                 pr("                  by: %s@%s\n",
 111                    *natp->nat_userid?natp->nat_userid : (s_char *)"nobody",
 112                    *natp->nat_hostname?natp->nat_hostname:
 113                    *natp->nat_hostaddr?natp->nat_hostaddr:(s_char *)"nowhere");
 114             }
 115         }
 116         if (*player->userid)
 117                 strcpy(natp->nat_userid, player->userid);
 118         else
 119                 strcpy(natp->nat_userid, "nobody");
 120
 121         if (*player->hostname)
 122                 strcpy(natp->nat_hostname, player->hostname);
 123         else
 124                 strcpy(natp->nat_hostname, "nowhere");
 125
 126         if (*player->hostaddr)
 127                 strcpy(natp->nat_hostaddr, player->hostaddr);
 128
 129         time(&natp->nat_last_login);
 130         natp->nat_connected = 1;
 131         putnat(natp);
 132         if (natp->nat_flags & NF_INFORM &&
 133             natp->nat_tgms > 0) {
 134                 if (natp->nat_tgms == 1)
 135                         pr("You have a new telegram waiting ...\n");
 136                 else
 137                         pr("You have %s new telegrams waiting ...\n",
 138                            numstr(buf, natp->nat_tgms));
 139                 natp->nat_tgms = 0;
 140         }
 141
 142         while (status()) {
 143                 if (command() == 0 && !player->aborted)
 144                         break;
 145                 player->aborted = 0;
 146         }
 147         /* #*# I put the following line in to prevent server crash -KHS */
 148         natp = getnatp(player->cnum);
 149         /*
 150          * randomly round up to the nearest minute,
 151          * charging at least 15 seconds.
 152          */
 153         time(&natp->nat_last_logout);
 154         secs = max(natp->nat_last_logout - player->lasttime, 15);
 155         natp->nat_minused += secs / 60;
 156         secs = secs % 60;
 157         if (chance(secs / 60.0))
 158                 natp->nat_minused += 1;
 159         natp->nat_connected = 0;
 160         putnat(natp);
 161         pr("Bye-bye\n");
 162 }
 163
 164 int
 165 command(void)
 166 {
 167         register unsigned int x;
 168         s_char  *redir;
 169         int     kill_player();
 170         s_char  scanspace[1024];
 171
 172         if (getcommand(player->combuf) < 0)
 173                 return 0;
 174         if (parse(player->combuf, player->argp, &player->condarg,
 175             scanspace, &redir) < 0) {
 176                 pr("See \"info Syntax\"?\n");
 177         } else {
 178                 /* XXX don't use alarm; use a scavenger thread */
 179                 /* DONT USE IT!!!! alarm and sleep may and dont work
 180                    together -- Sasha */
 181                 /* alarm((unsigned int)60*60); 1 hour */
 182                 if (player->condarg != (s_char *)0)
 183                         for(x=0;x<strlen(player->condarg);x++)
 184                                 if (isupper(*(player->condarg+x)))
 185                                         *(player->condarg+x) = tolower(*(player->condarg+x));
 186                 if (dispatch(player->combuf, redir) < 0)
 187                         pr("Try \"list of commands\" or \"info\"\n");
 188         }
 189         return 1;
 190 }
 191
 192 int
 193 status(void)
 194 {
 195         struct  natstr *natp;
 196         int     minute;
 197         struct  sctstr sect;
 198         int     hour[2];
 199         s_char  buf[128];
 200
 201         if (player->state == PS_SHUTDOWN)
 202                 return 0;
 203         natp = getnatp(player->cnum);
 204         if (io_error(player->iop) || io_eof(player->iop)) {
 205                 putnat(natp);
 206                 return 0;
 207         }
 208         player->visitor = (natp->nat_stat & (STAT_NORM|STAT_GOD)) == 0;
 209         if (player->dolcost != 0.0) {
 210                 if (player->dolcost > 100.0)
 211                         pr("That just cost you $%.2f\n", player->dolcost);
 212                 else if (player->dolcost < -100.0)
 213                         pr("You just made $%.2f\n", -player->dolcost);
 214                 if (natp->nat_money < player->dolcost && !player->broke) {
 215                         player->broke = 1;
 216                         player->nstat &= ~MONEY;
 217                         pr("You are now broke; industries are on strike.\n");
 218                 } else if (player->broke && natp->nat_money - player->dolcost > 0) {
 219                         player->broke = 0;
 220                         player->nstat |= MONEY;
 221                         pr("You are no longer broke!\n");
 222                 }
 223                 natp->nat_money -= roundavg(player->dolcost);
 224                 player->dolcost = 0.0;
 225         } else {
 226                 if (natp->nat_money < 0.0 && !player->broke) {
 227                         player->broke = 1;
 228                         player->nstat &= ~MONEY;
 229                         pr("You are now broke; industries are on strike.\n");
 230                 }
 231                 if (player->broke && natp->nat_money > 0) {
 232                         player->broke = 0;
 233                         player->nstat |= MONEY;
 234                         pr("You are no longer broke!\n");
 235                 }
 236         }
 237         getsect(natp->nat_xcap, natp->nat_ycap, &sect);
 238         if ((sect.sct_type == SCT_CAPIT || sect.sct_type == SCT_MOUNT ||
 239             sect.sct_type == SCT_SANCT) &&
 240             sect.sct_own == player->cnum)
 241                 player->nstat |= CAP;
 242         else
 243                 player->nstat &= ~CAP;
 244         /* Ok, has the country owner reset his capital yet after it was sacked? */
 245         if (natp->nat_flags & NF_SACKED)
 246             player->nstat &= ~CAP; /* No capital yet */
 247         player->ncomstat = player->nstat;
 248         (void) time(&player->curup);
 249         minute = (player->curup - player->lasttime) / 60;
 250         if (minute > 0) {
 251                 player->minleft -= minute;
 252                 if (player->minleft <= 0) {
 253                         /*
 254                          * countdown timer "player->minleft" has expired.
 255                          * either day change, or hours restriction
 256                          */
 257                         daychange(player->curup);
 258                         if (!gamehours(player->curup, hour)) {
 259                                 pr("Empire hours restriction in force\n");
 260                                 if ((natp->nat_stat & STAT_GOD) == 0) {
 261                                         putnat(natp);
 262                                         return 0;
 263                                 }
 264                         }
 265                         player->minleft = getminleft(player->curup, hour, &m_m_p_d);
 266                 }
 267                 player->lasttime += minute * 60;
 268                 natp->nat_minused += minute;
 269         }
 270         if ((player->nstat & NORM) && natp->nat_minused > m_m_p_d) {
 271                 pr("Max minutes per day limit exceeded.\n");
 272                 player->ncomstat = VIS;
 273         }
 274         if (player->btused) {
 275                 natp->nat_btu -= player->btused;
 276                 player->btused = 0;
 277         }
 278         if (natp->nat_tgms > 0) {
 279                 if (!(natp->nat_flags & NF_INFORM)) {
 280                         if (natp->nat_tgms == 1)
 281                                 pr("You have a new telegram waiting ...\n");
 282                         else
 283                                 pr("You have %s new telegrams waiting ...\n",
 284                                    numstr(buf, natp->nat_tgms));
 285                         natp->nat_tgms = 0;
 286                 }
 287         }
 288         if (natp->nat_ann > 0) {
 289                 if (natp->nat_ann == 1)
 290                         pr("You have a new announcement waiting ...\n");
 291                 else
 292                         pr("You have %s new announcements waiting ...\n",
 293                                 numstr(buf, natp->nat_ann));
 294                 natp->nat_ann = 0;
 295         }
 296         if (!player->visitor && !player->god && (player->nstat & CAP) == 0)
 297                 pr("You lost your capital... better designate one\n");
 298         putnat(natp);
 299         if (gamedown() && !player->god) {
 300                 pr("gamedown\n");
 301                 return 0;
 302         }
 303         return 1;
 304 }
 305
 306 /*
 307  * actually a command; redirection and piping ignored.
 308  * XXX This whole mess should be redone; execute block should
 309  * start with "exec start", and should end with "exec end".
 310  * We'll wait until 1.2 I guess.
 311  */
 312 int
 313 execute(void)
 314 {
 315         s_char  buf[512];
 316         int     abort;
 317         s_char  *p;
 318         s_char  *redir;
 319         s_char  scanspace[1024];
 320
 321         abort = 0;
 322         redir = 0;
 323
 324         p = getstarg (player->argp[1], "File? ", buf);
 325
 326         if (p == (s_char *) 0 || p == '\0')
 327                 return RET_SYN;
 328
 329         prexec(player->argp[1]);
 330         while (!abort && status()) {
 331                 if (recvclient(buf, sizeof(buf)) < 0)
 332                         break;
 333                 if (parse(buf, player->argp, &player->condarg,
 334                     scanspace, &redir) < 0) {
 335                         abort = 1;
 336                         continue;
 337                 }
 338                 if (redir == 0)
 339                         pr("\nExecute : %s\n", buf);
 340                 if (dispatch(buf, redir) < 0)
 341                         abort = 1;
 342         }
 343         if (abort) {
 344             while (recvclient(buf, sizeof(buf)) >= 0)
 345                 ;
 346         }
 347         if (redir == 0)
 348                 pr("Execute : %s\n", abort ? "aborted" : "terminated");
 349         return RET_OK;
 350 }
 351
 352 int
 353 show_motd(void)
 354 {
 355         extern  s_char *upfil;
 356         int     upf;
 357         struct  telstr tgm;
 358         s_char  buf[MAXTELSIZE];
 359
 360 #if !defined(_WIN32)
 361         if ((upf = open(upfil, O_RDONLY, 0)) < 0)
 362 #else
 363         if ((upf = open(upfil, O_RDONLY|O_BINARY, 0)) < 0)
 364 #endif
 365                 return RET_FAIL;
 366         if (read(upf, (s_char *) &tgm, sizeof(tgm)) != sizeof(tgm)) {
 367                 logerror("bad header on login message (upfil)");
 368                 close(upf);
 369                 return RET_FAIL;
 370         }
 371         if (read(upf, buf, tgm.tel_length) != tgm.tel_length) {
 372                 logerror("bad length %d on login message", tgm.tel_length);
 373                 close(upf);
 374                 return RET_FAIL;
 375         }
 376         if (tgm.tel_length >= (long)sizeof(buf))
 377                 tgm.tel_length = sizeof(buf)-1;
 378         buf[tgm.tel_length] = 0;
 379         pr(buf);
 380         (void) close(upf);
 381         return RET_OK;
 382 }
 383
 384 int match_user(char *file, struct player *player)
 385 {
 386         FILE    *fp;
 387         int     match = 0;
 388         s_char  host[256];
 389         s_char  user[256];
 390
 391         if ((fp = fopen(file, "r")) == NULL) {
 392                 /*logerror("Cannot find file %s", file);*/
 393                 return 0;
 394         }
 395         match = 0;
 396         while (!feof(fp) && !match) {
 397                 if (fgets(host, sizeof(host)-1, fp) == NULL)
 398                         break;
 399               if (host[0] == '#') continue;
 400                 if (fgets(user, sizeof(user)-1, fp) == NULL)
 401                         break;
 402               host[strlen(host)-1] = '\0';
 403               user[strlen(user)-1] = '\0';
 404                 if (strstr(player->userid, user) &&
 405                     (strstr(player->hostaddr, host) ||
 406                      strstr(player->hostname, host)))
 407                         ++match;
 408         }
 409         fclose(fp);
 410         return match;
 411 }
 412
 413 int
 414 quit(void)
 415 {
 416         player->state = PS_SHUTDOWN;
 417         return RET_OK;
 418 }
 419
 420 s_char *
 421 praddr(struct player *player)
 422 {
 423         return prbuf("%s@%s", player->userid,
 424                      *player->hostname?player->hostname:player->hostaddr);
 425 }
 426