1 |
elmex |
1.1 |
/* |
2 |
pippijn |
1.36 |
* CrossFire, A Multiplayer game for X-windows |
3 |
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* |
4 |
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* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
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* Copyright (C) 2001 Mark Wedel |
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* Copyright (C) 1992 Frank Tore Johansen |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* The author can be reached via e-mail to <crossfire@schmorp.de> |
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*/ |
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elmex |
1.1 |
|
25 |
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/** |
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* \file |
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* Socket general functions |
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* |
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* \date 2003-12-02 |
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* |
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* Mainly deals with initialization and higher level socket |
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* maintenance (checking for lost connections and if data has arrived.) |
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* The reading of data is handled in ericserver.c |
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*/ |
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#include <global.h> |
37 |
root |
1.11 |
#include <sproto.h> |
38 |
pippijn |
1.10 |
#include <sys/types.h> |
39 |
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#include <sys/time.h> |
40 |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
42 |
root |
1.23 |
#include <netinet/tcp.h> |
43 |
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#include <netinet/ip.h> |
44 |
pippijn |
1.10 |
#include <netdb.h> |
45 |
elmex |
1.1 |
|
46 |
root |
1.19 |
#include <unistd.h> |
47 |
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#include <arpa/inet.h> |
48 |
elmex |
1.1 |
|
49 |
root |
1.31 |
#include <algorithm> |
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51 |
root |
1.20 |
sockvec clients; |
52 |
elmex |
1.1 |
|
53 |
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/** |
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* Initializes a connection. Really, it just sets up the data structure, |
55 |
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* socket setup is handled elsewhere. We do send a version to the |
56 |
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* client. |
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*/ |
58 |
root |
1.20 |
client::client (int fd, const char *peername) |
59 |
root |
1.17 |
: fd (fd), host (strdup (peername)), |
60 |
root |
1.21 |
socket_ev (this, &client::socket_cb), |
61 |
root |
1.26 |
cmd_ev (this, &client::cmd_cb), |
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cc_inv (this), cc_other (this) |
63 |
elmex |
1.1 |
{ |
64 |
root |
1.34 |
refcnt_inc (); // the socket is an external reference |
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root |
1.16 |
{ |
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struct linger linger_opt; |
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linger_opt.l_onoff = 0; |
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linger_opt.l_linger = 0; |
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if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
73 |
root |
1.23 |
LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
74 |
root |
1.16 |
} |
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{ |
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root |
1.23 |
int val = IPTOS_LOWDELAY; |
78 |
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if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
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LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
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} |
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{ |
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int val = 1; |
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if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
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LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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} |
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#ifdef __linux__ |
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{ |
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int val; |
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// set some very aggressive keepalive parameters |
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val = 10; |
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if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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val = 5; |
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if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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val = 1; |
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if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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} |
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#endif |
108 |
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{ |
110 |
root |
1.16 |
int bufsize = 65535; /*Supposed absolute upper limit */ |
111 |
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int oldbufsize; |
112 |
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int buflen = sizeof (int); |
113 |
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if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) |
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LOG (llevError, "InitConnection: Error on fcntl.\n"); |
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if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) |
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oldbufsize = 0; |
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if (oldbufsize < bufsize) |
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if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) |
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LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); |
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buflen = sizeof (oldbufsize); |
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getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
126 |
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} |
127 |
elmex |
1.1 |
|
128 |
root |
1.28 |
state = ST_SETUP; |
129 |
root |
1.15 |
mapmode = Map0Cmd; |
130 |
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darkness = 1; |
131 |
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mapx = 11; |
132 |
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mapy = 11; |
133 |
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itemcmd = 1; /* Default is version item1 command */ |
134 |
root |
1.12 |
|
135 |
root |
1.27 |
faces_sent = salloc0<uint8> (nrofpixmaps); |
136 |
root |
1.16 |
|
137 |
root |
1.7 |
/* Do this so we don't send a face command for the client for |
138 |
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* this face. Face 0 is sent to the client to say clear |
139 |
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* face information. |
140 |
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*/ |
141 |
root |
1.15 |
faces_sent[0] = NS_FACESENT_FACE; |
142 |
root |
1.7 |
|
143 |
root |
1.37 |
socket_ev.prio (PE_PRIO_NORMAL); |
144 |
root |
1.18 |
socket_ev.fd (fd); |
145 |
root |
1.21 |
socket_ev.poll (PE_R); |
146 |
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147 |
root |
1.37 |
cmd_ev.prio (PE_PRIO_NORMAL); |
148 |
root |
1.15 |
|
149 |
root |
1.16 |
// initialisation done, kick it! |
150 |
root |
1.21 |
send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
151 |
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flush (); |
152 |
root |
1.13 |
|
153 |
root |
1.35 |
reset_stats (); |
154 |
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155 |
root |
1.34 |
clients.insert (this); |
156 |
elmex |
1.1 |
} |
157 |
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158 |
root |
1.20 |
client::~client () |
159 |
root |
1.16 |
{ |
160 |
root |
1.34 |
clients.erase (this); |
161 |
root |
1.32 |
|
162 |
root |
1.25 |
sfree<uint8> (faces_sent, nrofpixmaps); |
163 |
root |
1.22 |
free (stats.range); |
164 |
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free (stats.title); |
165 |
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free (host); |
166 |
root |
1.21 |
} |
167 |
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168 |
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void |
169 |
root |
1.31 |
client::do_destroy () |
170 |
root |
1.21 |
{ |
171 |
root |
1.31 |
attachable::do_destroy (); |
172 |
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173 |
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if (pl) |
174 |
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pl->disconnect (); |
175 |
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176 |
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if (fd >= 0) |
177 |
root |
1.34 |
{ |
178 |
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send_packet ("goodbye"); |
179 |
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flush (); |
180 |
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181 |
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close (fd); |
182 |
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} |
183 |
root |
1.29 |
|
184 |
root |
1.28 |
state = ST_DEAD; |
185 |
root |
1.27 |
|
186 |
root |
1.21 |
socket_ev.suspend (); |
187 |
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cmd_ev.suspend (); |
188 |
root |
1.31 |
|
189 |
root |
1.34 |
refcnt_dec (); // socket no longer open |
190 |
root |
1.16 |
} |
191 |
elmex |
1.1 |
|
192 |
root |
1.35 |
void |
193 |
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client::reset_stats () |
194 |
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{ |
195 |
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/* we need to clear these to -1 and not zero - otherwise, |
196 |
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* if a player quits and starts a new character, we wont |
197 |
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* send new values to the client, as things like exp start |
198 |
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* at zero. |
199 |
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*/ |
200 |
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for (int i = 0; i < NUM_SKILLS; i++) |
201 |
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last_skill_exp[i] = -1; |
202 |
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203 |
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for (int i = 0; i < NROFATTACKS; i++) |
204 |
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last_resist[i] = -1; |
205 |
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206 |
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last_weapon_sp = -1; |
207 |
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last_level = -1; |
208 |
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last_stats.exp = -1; |
209 |
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last_weight = (uint32) - 1; |
210 |
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last_flags = 0; |
211 |
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last_weight = 0; |
212 |
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last_weight_limit = 0; |
213 |
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last_path_attuned = 0; |
214 |
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last_path_repelled = 0; |
215 |
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last_path_denied = 0; |
216 |
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last_speed = 0; |
217 |
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flags = 0; |
218 |
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219 |
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static living zero_living; |
220 |
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last_stats = zero_living; |
221 |
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} |
222 |
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223 |
elmex |
1.1 |
/** This sets up the socket and reads all the image information into memory. */ |
224 |
root |
1.7 |
void |
225 |
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init_ericserver (void) |
226 |
elmex |
1.1 |
{ |
227 |
root |
1.7 |
cst_tot.time_start = time (NULL); |
228 |
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cst_lst.time_start = time (NULL); |
229 |
elmex |
1.1 |
|
230 |
root |
1.7 |
LOG (llevDebug, "Initialize new client/server data\n"); |
231 |
root |
1.11 |
|
232 |
root |
1.7 |
read_client_images (); |
233 |
elmex |
1.1 |
} |
234 |
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235 |
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236 |
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/******************************************************************************* |
237 |
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* |
238 |
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* Start of functions dealing with freeing of the data. |
239 |
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* |
240 |
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******************************************************************************/ |
241 |
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242 |
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/** Free's all the memory that ericserver allocates. */ |
243 |
root |
1.7 |
void |
244 |
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free_all_newserver (void) |
245 |
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{ |
246 |
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LOG (llevDebug, "Freeing all new client/server information.\n"); |
247 |
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free_socket_images (); |
248 |
elmex |
1.1 |
} |
249 |
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250 |
root |
1.27 |
client * |
251 |
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client::create (int fd, const char *peername) |
252 |
root |
1.16 |
{ |
253 |
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if (checkbanned (NULL, peername)) |
254 |
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{ |
255 |
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LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
256 |
root |
1.27 |
return 0; |
257 |
root |
1.16 |
} |
258 |
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else |
259 |
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{ |
260 |
root |
1.20 |
client *ns = new client (dup (fd), peername); |
261 |
root |
1.27 |
|
262 |
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ns->instantiate (); // effectively a nop right now |
263 |
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264 |
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INVOKE_CLIENT (CONNECT, ns); |
265 |
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266 |
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return ns; |
267 |
root |
1.16 |
} |
268 |
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} |
269 |
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