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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.15 by root, Thu Dec 14 02:37:37 2006 UTC vs.
Revision 1.42 by root, Mon Apr 2 18:54:00 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>
54client_socket *init_sockets;
55 50
56client_socket::client_socket () 51sockvec clients;
57{
58}
59
60client_socket::~client_socket ()
61{
62}
63 52
64/** 53/**
65 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
66 * 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
67 * client. 56 * client.
68 */ 57 */
69void 58client::client (int fd, const char *peername)
70client_socket::init (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)
71{ 63{
64 refcnt_inc (); // the socket is an external reference
65
66 mss = 1500 - 66; // 1500 typical ethernet frame, 66 typical tcp header overhead
67
68 {
69 struct linger linger_opt;
70
71 linger_opt.l_onoff = 0;
72 linger_opt.l_linger = 0;
73
74 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
75 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
76 }
77
78 {
79 int val;
80
81#ifdef IP_TOS
82 val = IPTOS_LOWDELAY;
83 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
84 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
85#endif
86
87#ifdef TCP_NODELAY
88 val = 1;
89 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
90 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
91#endif
92
93 // set some very aggressive keepalive parameters
94#ifdef TCP_KEEPIDLE
95 val = 10;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
98#endif
99
100#ifdef TCP_KEEPCNT
101 val = 5;
102 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
103 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
104#endif
105
106#ifdef TCP_KEEPINTVL
107 val = 1;
108 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
109 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
110#endif
111
112 // try to find the mss value in use
113#ifdef TCP_MAXSEG
114 socklen_t sl = sizeof (val);
115 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
116 mss = val;
117#endif
118 }
119
120 {
72 int bufsize = 65535; /*Supposed absolute upper limit */ 121 int bufsize = 65535; /*Supposed absolute upper limit */
73 int oldbufsize; 122 int oldbufsize;
74 int buflen = sizeof (int); 123 int buflen = sizeof (int);
75 124
76 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 125 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
77 LOG (llevError, "InitConnection: Error on fcntl.\n"); 126 LOG (llevError, "InitConnection: Error on fcntl.\n");
78 127
79 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 128 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
80 oldbufsize = 0; 129 oldbufsize = 0;
81 130
82 if (oldbufsize < bufsize) 131 if (oldbufsize < bufsize)
83 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 132 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
84 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 133 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
85 134
86 buflen = sizeof (oldbufsize); 135 buflen = sizeof (oldbufsize);
87 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 136 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
88#ifdef ESRV_DEBUG 137 }
89 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
90#endif
91 138
92 faceset = 0; 139 state = ST_SETUP;
93 facecache = 0;
94 image2 = 0;
95 sound = 0;
96 exp64 = 0;
97 monitor_spells = 0;
98 mapmode = Map0Cmd; 140 mapmode = Map0Cmd;
99 darkness = 1; 141 darkness = 1;
100 status = Ns_Add;
101 mapx = 11; 142 mapx = 11;
102 mapy = 11; 143 mapy = 11;
103 newmapcmd = 0;
104 itemcmd = 1; /* Default is version item1 command */ 144 itemcmd = 1; /* Default is version item1 command */
105 ext_mapinfos = 0; /*extendedmapinfo datas */ 145 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
106 EMI_smooth = 0;
107 look_position = 0;
108 update_look = 0;
109 has_readable_type = 0;
110 supported_readables = 0;
111 monitor_spells = 0;
112 mapinfocmd = 0;
113 extcmd = 0;
114 extmap = 0;
115 146
116 /* we should really do some checking here - if total clients overflows
117 * we need to do something more intelligent, because client id's will start
118 * duplicating (not likely in normal cases, but malicous attacks that
119 * just open and close connections could get this total up.
120 */
121 inbuf_len = 0;
122
123 /* Basic initialization. Needed because we do a check in
124 * HandleClient for oldsocketmode without checking the
125 * length of data.
126 */
127 memset (&lastmap, 0, sizeof (struct Map));
128 memset (faces_sent, 0, faces_sent_len * sizeof (*faces_sent));
129 memset (&anims_sent, 0, sizeof (anims_sent));
130 memset (&stats, 0, sizeof (struct statsinfo));
131 /* Do this so we don't send a face command for the client for 147 /* Do this so we don't send a face command for the client for
132 * this face. Face 0 is sent to the client to say clear 148 * this face. Face 0 is sent to the client to say clear
133 * face information. 149 * face information.
134 */ 150 */
135 faces_sent[0] = NS_FACESENT_FACE; 151 faces_sent[0] = true;
136 152
137 outputbuffer.start = 0; 153 socket_ev.prio (PE_PRIO_NORMAL);
138 outputbuffer.len = 0; 154 socket_ev.fd (fd);
139 can_write = 1; 155 socket_ev.poll (PE_R);
140 password_fails = 0;
141 156
142 current_map = 0; 157 cmd_ev.prio (PE_PRIO_NORMAL);
143 current_x = 0;
144 current_y = 0;
145 client[0] = 0;
146 buggy_mapscroll = 0;
147 158
148 sent_scroll = 0; 159 // initialisation done, kick it!
149 host = strdup_local (from_ip);
150
151 {
152 packet sl;
153 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 160 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
154 send_packet (sl); 161 flush ();
162
163 reset_stats ();
164
165 clients.insert (this);
166}
167
168client::~client ()
169{
170 clients.erase (this);
171
172 free (stats.range);
173 free (stats.title);
174 free (host);
175}
176
177void
178client::do_destroy ()
179{
180 attachable::do_destroy ();
181
182 if (pl)
183 pl->disconnect ();
184
185 if (fd >= 0)
186 {
187 send_packet ("goodbye");
188 flush ();
189
190 close (fd);
155 } 191 }
156 192
157 if (socket_info.nconns > cst_tot.max_conn) 193 state = ST_DEAD;
158 cst_tot.max_conn = socket_info.nconns;
159 if (socket_info.nconns > cst_lst.max_conn)
160 cst_lst.max_conn = socket_info.nconns;
161}
162 194
195 socket_ev.suspend ();
196 cmd_ev.suspend ();
197
198 refcnt_dec (); // socket no longer open
199}
200
201void
202client::reset_stats ()
203{
204 /* we need to clear these to -1 and not zero - otherwise,
205 * if a player quits and starts a new character, we wont
206 * send new values to the client, as things like exp start
207 * at zero.
208 */
209 for (int i = 0; i < NUM_SKILLS; i++)
210 last_skill_exp[i] = -1;
211
212 for (int i = 0; i < NROFATTACKS; i++)
213 last_resist[i] = -1;
214
215 last_weapon_sp = -1;
216 last_level = -1;
217 last_stats.exp = -1;
218 last_weight = (uint32) - 1;
219 last_flags = 0;
220 last_weight = 0;
221 last_weight_limit = 0;
222 last_path_attuned = 0;
223 last_path_repelled = 0;
224 last_path_denied = 0;
225 last_speed = 0;
226 flags = 0;
227
228 static living zero_living;
229 last_stats = zero_living;
230}
163 231
164/** This sets up the socket and reads all the image information into memory. */ 232/** This sets up the socket and reads all the image information into memory. */
165void 233void
166init_ericserver (void) 234init_ericserver (void)
167{ 235{
168 struct sockaddr_in insock;
169 struct protoent *protox;
170 struct linger linger_opt;
171
172 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
173
174 socket_info.timeout.tv_sec = 0;
175 socket_info.timeout.tv_usec = 0;
176 socket_info.nconns = 0;
177
178 memset (&cst_tot, 0, sizeof (CS_Stats));
179 memset (&cst_lst, 0, sizeof (CS_Stats));
180 cst_tot.time_start = time (NULL); 236 cst_tot.time_start = time (NULL);
181 cst_lst.time_start = time (NULL); 237 cst_lst.time_start = time (NULL);
182 238
183 LOG (llevDebug, "Initialize new client/server data\n"); 239 LOG (llevDebug, "Initialize new client/server data\n");
184 socket_info.nconns = 1;
185 init_sockets = (client_socket *) malloc (sizeof (client_socket));
186 init_sockets[0].faces_sent = NULL; /* unused */
187 socket_info.allocated_sockets = 1;
188
189 protox = getprotobyname ("tcp");
190 if (protox == NULL)
191 {
192 LOG (llevError, "init_ericserver: Error getting protox\n");
193 return;
194 }
195
196 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
197 if (init_sockets[0].fd == -1)
198 {
199 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
200 exit (-1);
201 }
202
203 insock.sin_family = AF_INET;
204 insock.sin_port = htons (settings.csport);
205 insock.sin_addr.s_addr = htonl (INADDR_ANY);
206
207 linger_opt.l_onoff = 0;
208 linger_opt.l_linger = 0;
209 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
210 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
211
212 {
213 int tmp = 1;
214
215 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
216 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
217 }
218
219 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
220 {
221 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
222 close (init_sockets[0].fd);
223 exit (-1);
224 }
225
226 if (listen (init_sockets[0].fd, 5) == (-1))
227 {
228 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
229 close (init_sockets[0].fd);
230 exit (-1);
231 }
232
233 init_sockets[0].status = Ns_Add;
234 read_client_images ();
235} 240}
236 241
237 242
238/******************************************************************************* 243/*******************************************************************************
239 * 244 *
… …
245void 250void
246free_all_newserver (void) 251free_all_newserver (void)
247{ 252{
248 LOG (llevDebug, "Freeing all new client/server information.\n"); 253 LOG (llevDebug, "Freeing all new client/server information.\n");
249 free_socket_images (); 254 free_socket_images ();
250 free (init_sockets);
251} 255}
252 256
253/** 257client *
254 * Frees a socket. 258client::create (int fd, const char *peername)
255 * Basically, all we need to do here is free all data structures that
256 * might be associated with the socket. It is up to the caller to
257 * update the list
258 */
259
260void
261free_newsocket (client_socket *ns)
262{ 259{
263 close (ns->fd); 260 client *ns = new client (dup (fd), peername);
264 261 ns->instantiate (); // effectively a nop right now
265 if (ns->stats.range) 262 INVOKE_CLIENT (CONNECT, ns);
266 free (ns->stats.range); 263 return ns;
267
268 if (ns->stats.title)
269 free (ns->stats.title);
270
271 free (ns->host);
272} 264}
273 265
274/** Sends the 'goodbye' command to the player, and closes connection. */
275void
276final_free_player (player *pl)
277{
278 pl->socket.send_packet ("goodbye");
279 free_newsocket (&pl->socket);
280 free_player (pl);
281}
282

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