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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.22 by root, Sat Dec 16 21:40:26 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#include <unistd.h> 46#include <unistd.h>
45#include <arpa/inet.h> 47#include <arpa/inet.h>
48
49#include <algorithm>
46 50
47sockvec clients; 51sockvec clients;
48 52
49/** 53/**
50 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
… …
52 * client. 56 * client.
53 */ 57 */
54client::client (int fd, const char *peername) 58client::client (int fd, const char *peername)
55: fd (fd), host (strdup (peername)), 59: fd (fd), host (strdup (peername)),
56 socket_ev (this, &client::socket_cb), 60 socket_ev (this, &client::socket_cb),
57 cmd_ev (this, &client::cmd_cb) 61 cmd_ev (this, &client::cmd_cb),
62 cc_inv (this), cc_other (this)
58{ 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
59 { 68 {
60 struct linger linger_opt; 69 struct linger linger_opt;
61 70
62 linger_opt.l_onoff = 0; 71 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0; 72 linger_opt.l_linger = 0;
64 73
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 74 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 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
67 } 118 }
68 119
69 { 120 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 121 int bufsize = 65535; /*Supposed absolute upper limit */
71 int oldbufsize; 122 int oldbufsize;
… …
83 134
84 buflen = sizeof (oldbufsize); 135 buflen = sizeof (oldbufsize);
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 136 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
86 } 137 }
87 138
139 state = ST_SETUP;
88 mapmode = Map0Cmd; 140 mapmode = Map0Cmd;
89 darkness = 1; 141 darkness = 1;
90 status = Ns_Add;
91 mapx = 11; 142 mapx = 11;
92 mapy = 11; 143 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 144 itemcmd = 1; /* Default is version item1 command */
94 145 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
96 146
97 /* 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
98 * 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
99 * face information. 149 * face information.
100 */ 150 */
101 faces_sent[0] = NS_FACESENT_FACE; 151 faces_sent[0] = true;
102 152
103 // socket I/O is low priority
104 // we prefer to have the server run instead of handling client requests
105 socket_ev.prio (PE_PRIO_NORMAL + 1); 153 socket_ev.prio (PE_PRIO_NORMAL);
106 socket_ev.fd (fd); 154 socket_ev.fd (fd);
107 socket_ev.poll (PE_R); 155 socket_ev.poll (PE_R);
108 156
109 // command handling is even lower priority
110 // that way no client can monopolise the server
111 cmd_ev.prio (PE_PRIO_NORMAL + 2); 157 cmd_ev.prio (PE_PRIO_NORMAL);
112 158
113 // initialisation done, kick it! 159 // initialisation done, kick it!
114 send_packet_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);
115 flush (); 161 flush ();
116 162
117#if 0//TODO 163 reset_stats ();
118 socket_info.nconns++; 164
119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 165 clients.insert (this);
120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
121#endif
122} 166}
123 167
124client::~client () 168client::~client ()
125{ 169{
126 if (pl) 170 clients.erase (this);
127 pl->socket = 0;
128 171
129 if (fd >= 0)
130 close (fd);
131
132 free (faces_sent);
133 free (stats.range); 172 free (stats.range);
134 free (stats.title); 173 free (stats.title);
135 free (host); 174 free (host);
136} 175}
137 176
138void 177void
139client::destroy () 178client::do_destroy ()
140{ 179{
141 status = Ns_Dead; 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);
191 }
192
193 state = ST_DEAD;
194
142 socket_ev.suspend (); 195 socket_ev.suspend ();
143 cmd_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;
144} 230}
145 231
146/** 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. */
147void 233void
148init_ericserver (void) 234init_ericserver (void)
149{ 235{
150 cst_tot.time_start = time (NULL); 236 cst_tot.time_start = time (NULL);
151 cst_lst.time_start = time (NULL); 237 cst_lst.time_start = time (NULL);
152 238
153 LOG (llevDebug, "Initialize new client/server data\n"); 239 LOG (llevDebug, "Initialize new client/server data\n");
154
155 read_client_images ();
156} 240}
157 241
158 242
159/******************************************************************************* 243/*******************************************************************************
160 * 244 *
… …
168{ 252{
169 LOG (llevDebug, "Freeing all new client/server information.\n"); 253 LOG (llevDebug, "Freeing all new client/server information.\n");
170 free_socket_images (); 254 free_socket_images ();
171} 255}
172 256
173/** Sends the 'goodbye' command to the player, and closes connection. */ 257client *
174void
175final_free_player (player *pl)
176{
177 free_player (pl);
178}
179
180bool
181add_client (int fd, const char *peername) 258client::create (int fd, const char *peername)
182{ 259{
183 if (checkbanned (NULL, peername))
184 {
185 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
186 return false;
187 }
188 else
189 {
190 client *ns = new client (dup (fd), peername); 260 client *ns = new client (dup (fd), peername);
191 clients.push_back (ns); 261 ns->instantiate (); // effectively a nop right now
192 return true; 262 INVOKE_CLIENT (CONNECT, ns);
193 } 263 return ns;
194} 264}
195 265

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