2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2012, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 of the License, or
9 * (at your option) any later version.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * accept.c: Keep track of people logged in
29 * Known contributors to this file:
31 * Markus Armbruster, 2005-2012
38 #include <sys/types.h>
39 #include <sys/socket.h>
40 #include <netinet/in.h>
41 #include <arpa/inet.h>
46 #include "empthread.h"
52 #include "prototypes.h"
54 static struct emp_qelem Players;
55 static int player_socket;
56 static size_t player_addrlen;
61 emp_initque(&Players);
62 init_player_commands();
64 player_socket = tcp_listen(*listen_addr ? listen_addr : NULL,
65 loginport, &player_addrlen);
73 lp = malloc(sizeof(struct player));
76 memset(lp, 0, sizeof(struct player));
78 /* real player, not dummy created by update and market update */
79 lp->iop = io_open(s, IO_READ | IO_WRITE, IO_BUFSIZE);
84 emp_insque(&lp->queue, &Players);
86 lp->may_sleep = PLAYER_SLEEP_FREELY;
94 player_delete(struct player *lp)
99 /* it's a real player */
100 io_close(lp->iop, player->curup + login_grace_time);
103 back = (struct player *)lp->queue.q_back;
105 emp_remque(&lp->queue);
107 /* XXX may need to free bigmap here */
112 player_next(struct player *lp)
115 lp = (struct player *)Players.q_forw;
117 lp = (struct player *)lp->queue.q_forw;
118 if (&lp->queue == &Players)
124 player_prev(struct player *lp)
127 lp = (struct player *)Players.q_back;
129 lp = (struct player *)lp->queue.q_back;
130 if (&lp->queue == &Players)
136 * Return player in state PS_PLAYING for CNUM.
139 getplayer(natid cnum)
141 struct emp_qelem *qp;
144 for (qp = Players.q_forw; qp != &Players; qp = qp->q_forw) {
145 pl = (struct player *)qp;
146 if (pl->cnum == cnum && pl->state == PS_PLAYING)
154 player_io_deadline(struct player *pl, int write)
156 if (pl->may_sleep < (write ? PLAYER_SLEEP_FREELY : PLAYER_SLEEP_ON_INPUT))
158 if (pl->state != PS_PLAYING)
159 return pl->curup + login_grace_time;
161 + minutes(pl->nstat & NONVIS ? max_idle: max_idle_visitor);
166 player_accept(void *unused)
168 struct sockaddr *sap;
170 int s = player_socket;
177 #ifdef RESOLVE_IPADDRESS
178 struct hostent *hostp;
181 /* auto sockaddr_storage would be simpler, but less portable */
182 sap = malloc(player_addrlen);
185 empth_select(s, EMPTH_FD_READ, NULL);
186 len = player_addrlen;
187 ns = accept(s, sap, &len);
188 /* FIXME accept() can block on some systems (RST after select() reports ready) */
190 logerror("new socket accept");
193 /* FIXME SO_KEEPALIVE is useless, player_kill_idle() strikes long before */
194 (void)setsockopt(ns, SOL_SOCKET, SO_KEEPALIVE, &set, sizeof(set));
197 logerror("can't create player for fd %d", ns);
201 #ifdef HAVE_GETADDRINFO
202 inaddr = sap->sa_family == AF_INET
203 ? (void *)&((struct sockaddr_in *)sap)->sin_addr
204 : (void *)&((struct sockaddr_in6 *)sap)->sin6_addr;
205 /* Assumes that if you got getaddrinfo(), you got inet_ntop() too */
206 if (!inet_ntop(sap->sa_family, inaddr,
207 np->hostaddr, sizeof(np->hostaddr))) {
208 logerror("inet_ntop() failed: %s", strerror(errno));
213 inaddr = &((struct sockaddr_in *)sap)->sin_addr;
214 strcpy(np->hostaddr, inet_ntoa(*(struct in_addr *)inaddr));
216 #ifdef RESOLVE_IPADDRESS
217 hostp = gethostbyaddr(inaddr, player_addrlen, sap->sa_family);
219 strcpy(np->hostname, hostp->h_name);
220 #endif /* RESOLVE_IPADDRESS */
221 /* FIXME ancient black magic; figure out true stack need */
223 /* budget */ + MAX(WORLD_SZ() * sizeof(int) * 7,
224 /* power */ MAXNOC * sizeof(struct powstr));
225 sprintf(buf, "Conn%d", ns);
226 empth_create(player_login, stacksize, 0, buf, np);