Markus Armbruster
b9b0710128
Commit79407e68(v4.3.11) changed recvclient() to keep failing after receiving EOF from player. This was bad, because some places getting input check player->aborted instead of recvclient() failure, and player->aborted wasn't set on EOF. Bugs caused by this: * comm_bomb(), ship_bomb(), plane_bomb(), land_bomb() went into an infinite loop that eventually ate all memory. * deli(), desi(), dist(), fly(), morale(), zdon(), att_prompt(), ask_move_in() interpreted EOF as empty input instead of no more input. * cmd_sail_ship() dereferenced a null pointer. Fix by setting player->aborted on EOF, too. (cherry picked from commitb3a7a8ee11)
332 lines
8.5 KiB
C
332 lines
8.5 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2008, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* player.c: Main command loop for a player
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*
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* Known contributors to this file:
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* Steve McClure, 2000
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*/
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#include <config.h>
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#include <errno.h>
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#include <stdio.h>
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#include "com.h"
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#include "empio.h"
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#include "empthread.h"
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#include "file.h"
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#include "journal.h"
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#include "misc.h"
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#include "nat.h"
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#include "optlist.h"
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#include "player.h"
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#include "proto.h"
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#include "prototypes.h"
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#include "tel.h"
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static int command(void);
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static int status(void);
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struct player *player;
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void
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player_main(struct player *p)
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{
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struct natstr *natp;
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int secs;
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char buf[128];
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p->state = PS_PLAYING;
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player = p;
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time(&player->lasttime);
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time(&player->curup);
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show_motd();
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if (init_nats() < 0) {
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pr("Server confused, try again later\n");
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return;
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}
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natp = getnatp(player->cnum);
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if (!gamehours(player->curup)) {
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pr("Empire hours restriction in force\n");
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if (natp->nat_stat != STAT_GOD)
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return;
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}
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daychange(player->curup);
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if ((player->minleft = getminleft(player->curup, m_m_p_d)) <= 0) {
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pr("Time exceeded today\n");
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return;
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}
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if (natp->nat_stat != STAT_VIS
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&& natp->nat_last_login
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&& (strcmp(natp->nat_hostaddr, player->hostaddr)
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|| strcmp(natp->nat_userid, player->userid))) {
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pr("Last connection from: %s", ctime(&natp->nat_last_login));
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pr(" to: %s",
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natp->nat_last_login <= natp->nat_last_logout
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? ctime(&natp->nat_last_logout) : "?");
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pr(" by: %s@%s\n",
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natp->nat_userid,
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*natp->nat_hostname ? natp->nat_hostname : natp->nat_hostaddr);
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}
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strcpy(natp->nat_userid, player->userid);
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strcpy(natp->nat_hostname, player->hostname);
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strcpy(natp->nat_hostaddr, player->hostaddr);
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time(&natp->nat_last_login);
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putnat(natp);
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journal_login();
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if (natp->nat_flags & NF_INFORM && natp->nat_tgms > 0) {
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if (natp->nat_tgms == 1)
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pr("You have a new telegram waiting ...\n");
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else
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pr("You have %s new telegrams waiting ...\n",
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numstr(buf, natp->nat_tgms));
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natp->nat_tgms = 0;
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}
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while (status()) {
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command();
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player->aborted = player->eof;
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empth_yield();
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}
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/* #*# I put the following line in to prevent server crash -KHS */
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natp = getnatp(player->cnum);
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/*
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* randomly round up to the nearest minute,
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* charging at least 15 seconds.
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*/
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time(&natp->nat_last_logout);
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secs = MAX(natp->nat_last_logout - player->lasttime, 15);
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natp->nat_minused += secs / 60;
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secs = secs % 60;
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if (chance(secs / 60.0))
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natp->nat_minused += 1;
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putnat(natp);
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pr("Bye-bye\n");
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journal_logout();
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}
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static int
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command(void)
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{
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char *redir; /* UTF-8 */
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char scanspace[1024];
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if (getcommand(player->combuf) < 0)
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return 0;
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if (parse(player->combuf, scanspace, player->argp, player->comtail,
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&player->condarg, &redir) < 0) {
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pr("See \"info Syntax\"?\n");
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} else {
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if (dispatch(player->combuf, redir) < 0)
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pr("Try \"list of commands\" or \"info\"\n");
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}
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return 1;
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}
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static int
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status(void)
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{
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struct natstr *natp;
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int old_nstat, minute;
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char buf[128];
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if (player->eof || player->state == PS_SHUTDOWN)
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return 0;
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natp = getnatp(player->cnum);
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if (player->dolcost > 100.0)
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pr("That just cost you $%.2f\n", player->dolcost);
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else if (player->dolcost < -100.0)
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pr("You just made $%.2f\n", -player->dolcost);
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natp->nat_money -= roundavg(player->dolcost);
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player->dolcost = 0.0;
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old_nstat = player->nstat;
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player_set_nstat(player, natp);
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if ((old_nstat & MONEY) && !(player->nstat & MONEY))
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pr("You are now broke; industries are on strike.\n");
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if (!(old_nstat & MONEY) && (player->nstat & MONEY))
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pr("You are no longer broke!\n");
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time(&player->curup);
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minute = (player->curup - player->lasttime) / 60;
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if (minute > 0) {
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player->minleft -= minute;
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if (player->minleft <= 0) {
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/*
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* countdown timer "player->minleft" has expired.
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* either day change, or hours restriction
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*/
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daychange(player->curup);
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if (!gamehours(player->curup)) {
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pr("Empire hours restriction in force\n");
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if (natp->nat_stat != STAT_GOD) {
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putnat(natp);
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return 0;
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}
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}
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player->minleft = getminleft(player->curup, m_m_p_d);
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}
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player->lasttime += minute * 60;
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natp->nat_minused += minute;
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}
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if (natp->nat_stat == STAT_ACTIVE && natp->nat_minused > m_m_p_d) {
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pr("Max minutes per day limit exceeded.\n");
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player->nstat = (player->nstat & ~NORM) | VIS;
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}
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if (player->btused) {
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natp->nat_btu -= player->btused;
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player->btused = 0;
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}
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if (natp->nat_tgms > 0) {
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if (!(natp->nat_flags & NF_INFORM)) {
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if (natp->nat_tgms == 1)
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pr("You have a new telegram waiting ...\n");
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else
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pr("You have %s new telegrams waiting ...\n",
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numstr(buf, natp->nat_tgms));
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natp->nat_tgms = 0;
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}
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}
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if (natp->nat_ann > 0) {
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if (natp->nat_ann == 1)
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pr("You have a new announcement waiting ...\n");
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else
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pr("You have %s new announcements waiting ...\n",
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numstr(buf, natp->nat_ann));
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natp->nat_ann = 0;
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}
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if (natp->nat_stat == STAT_ACTIVE && (player->nstat & CAP) == 0)
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pr("You lost your capital... better designate one\n");
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putnat(natp);
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if (gamedown() && !player->god) {
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pr("gamedown\n");
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return 0;
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}
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return 1;
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}
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/*
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* XXX This whole mess should be redone; execute block should
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* start with "exec start", and should end with "exec end".
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* We'll wait until 1.2 I guess.
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*/
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int
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execute(void)
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{
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char buf[1024];
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int failed;
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char *p;
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char *redir; /* UTF-8 */
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char scanspace[1024];
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failed = 0;
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if (player->comtail[1])
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p = player->comtail[1];
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else
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p = getstring("File? ", buf);
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if (p == NULL || *p == '\0')
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return RET_SYN;
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prexec(p);
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while (!failed && status()) {
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player->nstat &= ~EXEC;
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if (recvclient(buf, sizeof(buf)) < 0)
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break;
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if (parse(buf, scanspace, player->argp, player->comtail,
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&player->condarg, &redir) < 0) {
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failed = 1;
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continue;
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}
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pr("\nExecute : %s\n", buf);
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if (redir) {
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pr("Execute : redirection not supported\n");
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failed = 1;
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} else if (dispatch(buf, NULL) < 0)
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failed = 1;
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}
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if (failed) {
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while (recvclient(buf, sizeof(buf)) >= 0) ;
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}
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pr("Execute : %s\n", failed ? "aborted" : "terminated");
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player->eof = 0;
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return RET_OK;
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}
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int
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show_motd(void)
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{
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FILE *motd_fp;
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struct telstr tgm;
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char buf[MAXTELSIZE + 1]; /* UTF-8 */
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if ((motd_fp = fopen(motdfil, "rb")) == NULL) {
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if (errno == ENOENT)
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return RET_OK;
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else {
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pr ("Could not open motd.\n");
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logerror("Could not open motd (%s).\n", motdfil);
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return RET_SYS;
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}
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}
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if (fread(&tgm, sizeof(tgm), 1, motd_fp) != 1) {
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logerror("bad header on login message (motdfil)");
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fclose(motd_fp);
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return RET_FAIL;
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}
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if (tgm.tel_length >= (long)sizeof(buf)) {
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logerror("text length (%ld) is too long for login message (motdfil)", tgm.tel_length);
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fclose(motd_fp);
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return RET_FAIL;
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}
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if (fread(buf, tgm.tel_length, 1, motd_fp) != 1) {
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logerror("bad length %ld on login message", tgm.tel_length);
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fclose(motd_fp);
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return RET_FAIL;
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}
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buf[tgm.tel_length] = 0;
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uprnf(buf);
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fclose(motd_fp);
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return RET_OK;
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}
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int
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quit(void)
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{
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player->state = PS_SHUTDOWN;
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return RET_OK;
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}
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char *
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praddr(struct player *p)
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{
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return prbuf("%s@%s", p->userid,
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*p->hostname ? p->hostname : p->hostaddr);
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}
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