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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.13 by root, Thu Dec 14 01:12:35 2006 UTC vs.
Revision 1.39 by root, Sun Mar 11 02:12:45 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * CrossFire, A Multiplayer game for X-windows
3 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
4 Copyright (C) 2001 Mark Wedel 5 * Copyright (C) 2001 Mark Wedel
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (C) 1992 Frank Tore Johansen
6 7 *
7 This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version. 11 * (at your option) any later version.
11 12 *
12 This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 16 * GNU General Public License for more details.
16 17 *
17 You should have received a copy of the GNU General Public License 18 * You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software 19 * along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 21 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The author can be reached via e-mail to <crossfire@schmorp.de>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Socket general functions 27 * Socket general functions
27 * 28 *
… …
29 * 30 *
30 * Mainly deals with initialization and higher level socket 31 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 32 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c 33 * The reading of data is handled in ericserver.c
33 */ 34 */
34
35 35
36#include <global.h> 36#include <global.h>
37#include <sproto.h> 37#include <sproto.h>
38#include <sys/types.h> 38#include <sys/types.h>
39#include <sys/time.h> 39#include <sys/time.h>
40#include <sys/socket.h> 40#include <sys/socket.h>
41#include <netinet/in.h> 41#include <netinet/in.h>
42#include <netinet/tcp.h>
43#include <netinet/ip.h>
42#include <netdb.h> 44#include <netdb.h>
43 45
44#ifdef HAVE_UNISTD_H
45# include <unistd.h> 46#include <unistd.h>
46#endif
47
48#ifdef HAVE_ARPA_INET_H
49# include <arpa/inet.h> 47#include <arpa/inet.h>
50#endif
51#include <newserver.h>
52 48
53Socket_Info socket_info; 49#include <algorithm>
54NewSocket *init_sockets; 50
51sockvec clients;
55 52
56/** 53/**
57 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
58 * socket setup is handled elsewhere. We do send a version to the 55 * socket setup is handled elsewhere. We do send a version to the
59 * client. 56 * client.
60 */ 57 */
61void 58client::client (int fd, const char *peername)
62InitConnection (NewSocket *ns, const char *from_ip) 59: fd (fd), host (strdup (peername)),
60 socket_ev (this, &client::socket_cb),
61 cmd_ev (this, &client::cmd_cb),
62 cc_inv (this), cc_other (this)
63{ 63{
64 int bufsize = 65535; /*Supposed absolute upper limit */ 64 refcnt_inc (); // the socket is an external reference
65 int oldbufsize;
66 int buflen = sizeof (int);
67 65
68 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 66 {
69 LOG (llevError, "InitConnection: Error on fcntl.\n"); 67 struct linger linger_opt;
70 68
71 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 69 linger_opt.l_onoff = 0;
72 oldbufsize = 0; 70 linger_opt.l_linger = 0;
73 71
74 if (oldbufsize < bufsize) 72 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
75 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 73 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
76 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 74 }
77 75
78 buflen = sizeof (oldbufsize); 76 {
79 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 77 int val = IPTOS_LOWDELAY;
80#ifdef ESRV_DEBUG 78
81 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize); 79 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
80 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
81 }
82
83 {
84 int val = 1;
85
86 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
87 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
88 }
89
90#ifdef __linux__
91 {
92 int val;
93
94 // set some very aggressive keepalive parameters
95 val = 10;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
98
99 val = 5;
100 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
101 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
102
103 val = 1;
104 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
105 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
106 }
82#endif 107#endif
83 108
84 ns->faceset = 0; 109 {
85 ns->facecache = 0; 110 int bufsize = 65535; /*Supposed absolute upper limit */
86 ns->image2 = 0; 111 int oldbufsize;
87 ns->sound = 0; 112 int buflen = sizeof (int);
88 ns->exp64 = 0; 113
89 ns->monitor_spells = 0; 114 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
115 LOG (llevError, "InitConnection: Error on fcntl.\n");
116
117 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
118 oldbufsize = 0;
119
120 if (oldbufsize < bufsize)
121 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
122 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
123
124 buflen = sizeof (oldbufsize);
125 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
126 }
127
128 state = ST_SETUP;
90 ns->mapmode = Map0Cmd; 129 mapmode = Map0Cmd;
91 ns->darkness = 1; 130 darkness = 1;
92 ns->status = Ns_Add;
93 ns->mapx = 11; 131 mapx = 11;
94 ns->mapy = 11; 132 mapy = 11;
95 ns->newmapcmd = 0;
96 ns->itemcmd = 1; /* Default is version item1 command */ 133 itemcmd = 1; /* Default is version item1 command */
97 ns->ext_mapinfos = 0; /*extendedmapinfo datas */
98 ns->EMI_smooth = 0;
99 ns->look_position = 0;
100 ns->update_look = 0;
101 ns->has_readable_type = 0;
102 ns->supported_readables = 0;
103 ns->monitor_spells = 0;
104 ns->mapinfocmd = 0;
105 ns->extcmd = 0;
106 ns->extmap = 0;
107 134
108 /* we should really do some checking here - if total clients overflows
109 * we need to do something more intelligent, because client id's will start
110 * duplicating (not likely in normal cases, but malicous attacks that
111 * just open and close connections could get this total up.
112 */
113 ns->inbuf_len = 0;
114
115 /* Basic initialization. Needed because we do a check in
116 * HandleClient for oldsocketmode without checking the
117 * length of data.
118 */
119 memset (&ns->lastmap, 0, sizeof (struct Map));
120 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent));
121 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent));
122 memset (&ns->stats, 0, sizeof (struct statsinfo));
123 /* Do this so we don't send a face command for the client for 135 /* Do this so we don't send a face command for the client for
124 * this face. Face 0 is sent to the client to say clear 136 * this face. Face 0 is sent to the client to say clear
125 * face information. 137 * face information.
126 */ 138 */
127 ns->faces_sent[0] = NS_FACESENT_FACE; 139 faces_sent[0] = NS_FACESENT_FACE;
128 140
129 ns->outputbuffer.start = 0; 141 socket_ev.prio (PE_PRIO_NORMAL);
130 ns->outputbuffer.len = 0; 142 socket_ev.fd (fd);
131 ns->can_write = 1; 143 socket_ev.poll (PE_R);
132 ns->password_fails = 0;
133 144
134 ns->current_map = 0; 145 cmd_ev.prio (PE_PRIO_NORMAL);
135 ns->current_x = 0;
136 ns->current_y = 0;
137 ns->client[0] = 0;
138 ns->buggy_mapscroll = 0;
139 146
140 ns->sent_scroll = 0; 147 // initialisation done, kick it!
141 ns->host = strdup_local (from_ip);
142
143 {
144 SockList sl (MAXSOCKBUF);
145
146 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 148 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
147 Send_With_Handling (ns, &sl); 149 flush ();
148 sl.free (); 150
151 reset_stats ();
152
153 clients.insert (this);
154}
155
156client::~client ()
157{
158 clients.erase (this);
159
160 free (stats.range);
161 free (stats.title);
162 free (host);
163}
164
165void
166client::do_destroy ()
167{
168 attachable::do_destroy ();
169
170 if (pl)
171 pl->disconnect ();
172
173 if (fd >= 0)
174 {
175 send_packet ("goodbye");
176 flush ();
177
178 close (fd);
149 } 179 }
150 180
151#ifdef CS_LOGSTATS 181 state = ST_DEAD;
152 if (socket_info.nconns > cst_tot.max_conn)
153 cst_tot.max_conn = socket_info.nconns;
154 if (socket_info.nconns > cst_lst.max_conn)
155 cst_lst.max_conn = socket_info.nconns;
156#endif
157}
158 182
183 socket_ev.suspend ();
184 cmd_ev.suspend ();
185
186 refcnt_dec (); // socket no longer open
187}
188
189void
190client::reset_stats ()
191{
192 /* we need to clear these to -1 and not zero - otherwise,
193 * if a player quits and starts a new character, we wont
194 * send new values to the client, as things like exp start
195 * at zero.
196 */
197 for (int i = 0; i < NUM_SKILLS; i++)
198 last_skill_exp[i] = -1;
199
200 for (int i = 0; i < NROFATTACKS; i++)
201 last_resist[i] = -1;
202
203 last_weapon_sp = -1;
204 last_level = -1;
205 last_stats.exp = -1;
206 last_weight = (uint32) - 1;
207 last_flags = 0;
208 last_weight = 0;
209 last_weight_limit = 0;
210 last_path_attuned = 0;
211 last_path_repelled = 0;
212 last_path_denied = 0;
213 last_speed = 0;
214 flags = 0;
215
216 static living zero_living;
217 last_stats = zero_living;
218}
159 219
160/** This sets up the socket and reads all the image information into memory. */ 220/** This sets up the socket and reads all the image information into memory. */
161void 221void
162init_ericserver (void) 222init_ericserver (void)
163{ 223{
164 struct sockaddr_in insock;
165 struct protoent *protox;
166 struct linger linger_opt;
167
168 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
169
170 socket_info.timeout.tv_sec = 0;
171 socket_info.timeout.tv_usec = 0;
172 socket_info.nconns = 0;
173
174#ifdef CS_LOGSTATS
175 memset (&cst_tot, 0, sizeof (CS_Stats));
176 memset (&cst_lst, 0, sizeof (CS_Stats));
177 cst_tot.time_start = time (NULL); 224 cst_tot.time_start = time (NULL);
178 cst_lst.time_start = time (NULL); 225 cst_lst.time_start = time (NULL);
179#endif
180 226
181 LOG (llevDebug, "Initialize new client/server data\n"); 227 LOG (llevDebug, "Initialize new client/server data\n");
182 socket_info.nconns = 1;
183 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
184 init_sockets[0].faces_sent = NULL; /* unused */
185 socket_info.allocated_sockets = 1;
186
187 protox = getprotobyname ("tcp");
188 if (protox == NULL)
189 {
190 LOG (llevError, "init_ericserver: Error getting protox\n");
191 return;
192 }
193
194 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
195 if (init_sockets[0].fd == -1)
196 {
197 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
198 exit (-1);
199 }
200
201 insock.sin_family = AF_INET;
202 insock.sin_port = htons (settings.csport);
203 insock.sin_addr.s_addr = htonl (INADDR_ANY);
204
205 linger_opt.l_onoff = 0;
206 linger_opt.l_linger = 0;
207 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
208 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
209
210 {
211 int tmp = 1;
212
213 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
214 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
215 }
216
217 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
218 {
219 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
220 close (init_sockets[0].fd);
221 exit (-1);
222 }
223
224 if (listen (init_sockets[0].fd, 5) == (-1))
225 {
226 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
227 close (init_sockets[0].fd);
228 exit (-1);
229 }
230
231 init_sockets[0].status = Ns_Add;
232 read_client_images ();
233} 228}
234 229
235 230
236/******************************************************************************* 231/*******************************************************************************
237 * 232 *
… …
243void 238void
244free_all_newserver (void) 239free_all_newserver (void)
245{ 240{
246 LOG (llevDebug, "Freeing all new client/server information.\n"); 241 LOG (llevDebug, "Freeing all new client/server information.\n");
247 free_socket_images (); 242 free_socket_images ();
248 free (init_sockets);
249} 243}
250 244
251/** 245client *
252 * Frees a socket. 246client::create (int fd, const char *peername)
253 * Basically, all we need to do here is free all data structures that
254 * might be associated with the socket. It is up to the caller to
255 * update the list
256 */
257
258void
259free_newsocket (NewSocket *ns)
260{ 247{
261 close (ns->fd); 248 client *ns = new client (dup (fd), peername);
262 249 ns->instantiate (); // effectively a nop right now
263 if (ns->stats.range) 250 INVOKE_CLIENT (CONNECT, ns);
264 free (ns->stats.range); 251 return ns;
265
266 if (ns->stats.title)
267 free (ns->stats.title);
268
269 free (ns->host);
270} 252}
271 253
272/** Sends the 'goodbye' command to the player, and closes connection. */
273void
274final_free_player (player *pl)
275{
276 pl->socket.send_packet ("goodbye");
277 free_newsocket (&pl->socket);
278 free_player (pl);
279}
280

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