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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.21 by root, Sat Dec 16 03:08:26 2006 UTC vs.
Revision 1.45 by root, Fri Apr 27 03:22:29 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,
… …
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)
58{ 62{
63 refcnt_inc (); // the socket is an external reference
64
65 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
66
59 { 67 {
60 struct linger linger_opt; 68 struct linger linger_opt;
61 69
62 linger_opt.l_onoff = 0; 70 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0; 71 linger_opt.l_linger = 0;
64 72
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 73 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 74 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
75 }
76
77 {
78 int val;
79
80#ifdef IP_TOS
81 val = IPTOS_LOWDELAY;
82 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
83 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
84#endif
85
86#ifdef TCP_NODELAY
87 val = 1;
88 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
89 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
90#endif
91
92 // set some very aggressive keepalive parameters
93#ifdef TCP_KEEPIDLE
94 val = 1;
95 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
96 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
97#endif
98
99#ifdef TCP_KEEPCNT
100 val = 3;
101 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
102 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
103#endif
104
105#ifdef TCP_KEEPINTVL
106 val = 1;
107 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
108 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
109#endif
110
111 // try to find the mss value in use
112#ifdef TCP_MAXSEG
113 socklen_t sl = sizeof (val);
114 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
115 mss = val;
116#endif
67 } 117 }
68 118
69 { 119 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 120 int bufsize = 65535; /*Supposed absolute upper limit */
71 int oldbufsize; 121 int oldbufsize;
… …
83 133
84 buflen = sizeof (oldbufsize); 134 buflen = sizeof (oldbufsize);
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 135 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
86 } 136 }
87 137
138 state = ST_SETUP;
88 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
89 darkness = 1; 140 darkness = 1;
90 status = Ns_Add;
91 mapx = 11; 141 mapx = 11;
92 mapy = 11; 142 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
94 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
95 faces_sent_len = nrofpixmaps;
96 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
97 if (!faces_sent)
98 fatal (OUT_OF_MEMORY);
99 145
100 /* Do this so we don't send a face command for the client for 146 /* Do this so we don't send a face command for the client for
101 * this face. Face 0 is sent to the client to say clear 147 * this face. Face 0 is sent to the client to say clear
102 * face information. 148 * face information.
103 */ 149 */
104 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
105 151
106 // socket I/O is low priority
107 // we prefer to have the server run instead of handling client requests
108 socket_ev.prio (PE_PRIO_NORMAL + 1); 152 socket_ev.prio (PE_PRIO_NORMAL);
109 socket_ev.fd (fd); 153 socket_ev.fd (fd);
110 socket_ev.poll (PE_R); 154 socket_ev.poll (PE_R);
111 155
112 // command handling is even lower priority
113 // that way no client can monopolise the server
114 cmd_ev.prio (PE_PRIO_NORMAL + 2); 156 cmd_ev.prio (PE_PRIO_NORMAL);
115 157
116 // initialisation done, kick it! 158 // initialisation done, kick it!
117
118 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 159 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
119 flush (); 160 flush ();
120 161
121#if 0//TODO 162 reset_stats ();
122 socket_info.nconns++; 163
123 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 164 clients.insert (this);
124 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
125#endif
126} 165}
127 166
128client::~client () 167client::~client ()
129{ 168{
169 clients.erase (this);
170
171 free (stats.range);
172 free (stats.title);
173 free (host);
174}
175
176void
177client::do_destroy ()
178{
179 attachable::do_destroy ();
180
130 if (pl) 181 if (pl)
131 pl->socket = 0; 182 pl->disconnect ();
132 183
133 if (fd >= 0) 184 if (fd >= 0)
134 close (fd), fd = -1; 185 {
186 send_packet ("goodbye");
187 flush ();
135 188
136 free (stats.range), stats.range = 0; 189 close (fd);
137 free (stats.title), stats.title = 0; 190 }
138 free (host), host = 0;
139}
140 191
141void 192 state = ST_DEAD;
142client::destroy () 193
143{
144 status = Ns_Dead;
145 socket_ev.suspend (); 194 socket_ev.suspend ();
146 cmd_ev.suspend (); 195 cmd_ev.suspend ();
196
197 refcnt_dec (); // socket no longer open
198}
199
200void
201client::reset_stats ()
202{
203 /* we need to clear these to -1 and not zero - otherwise,
204 * if a player quits and starts a new character, we wont
205 * send new values to the client, as things like exp start
206 * at zero.
207 */
208 for (int i = 0; i < NUM_SKILLS; i++)
209 last_skill_exp[i] = -1;
210
211 for (int i = 0; i < NROFATTACKS; i++)
212 last_resist[i] = -1;
213
214 last_weapon_sp = -1;
215 last_level = -1;
216 last_stats.exp = -1;
217 last_weight = (uint32) - 1;
218 last_flags = 0;
219 last_weight = 0;
220 last_weight_limit = 0;
221 last_path_attuned = 0;
222 last_path_repelled = 0;
223 last_path_denied = 0;
224 last_speed = 0;
225 last_flags = 0;
226
227 static living zero_living;
228 last_stats = zero_living;
147} 229}
148 230
149/** This sets up the socket and reads all the image information into memory. */ 231/** This sets up the socket and reads all the image information into memory. */
150void 232void
151init_ericserver (void) 233init_ericserver (void)
152{ 234{
153 cst_tot.time_start = time (NULL); 235 cst_tot.time_start = time (NULL);
154 cst_lst.time_start = time (NULL); 236 cst_lst.time_start = time (NULL);
155 237
156 LOG (llevDebug, "Initialize new client/server data\n"); 238 LOG (llevDebug, "Initialize new client/server data\n");
157
158 read_client_images ();
159} 239}
160
161 240
162/******************************************************************************* 241/*******************************************************************************
163 * 242 *
164 * Start of functions dealing with freeing of the data. 243 * Start of functions dealing with freeing of the data.
165 * 244 *
… …
171{ 250{
172 LOG (llevDebug, "Freeing all new client/server information.\n"); 251 LOG (llevDebug, "Freeing all new client/server information.\n");
173 free_socket_images (); 252 free_socket_images ();
174} 253}
175 254
176/** Sends the 'goodbye' command to the player, and closes connection. */ 255client *
177void
178final_free_player (player *pl)
179{
180 free_player (pl);
181}
182
183bool
184add_client (int fd, const char *peername) 256client::create (int fd, const char *peername)
185{ 257{
186 if (checkbanned (NULL, peername))
187 {
188 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
189 return false;
190 }
191 else
192 {
193 client *ns = new client (dup (fd), peername); 258 client *ns = new client (dup (fd), peername);
194 clients.push_back (ns); 259 ns->instantiate (); // effectively a nop right now
195 return true; 260 INVOKE_CLIENT (CONNECT, ns);
196 } 261 return ns;
197} 262}
198 263

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