1 |
/* |
2 |
CrossFire, A Multiplayer game for X-windows |
3 |
|
4 |
Copyright (C) 2001 Mark Wedel |
5 |
Copyright (C) 1992 Frank Tore Johansen |
6 |
|
7 |
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 |
the Free Software Foundation; either version 2 of the License, or |
10 |
(at your option) any later version. |
11 |
|
12 |
This program is distributed in the hope that it will be useful, |
13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 |
GNU General Public License for more details. |
16 |
|
17 |
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 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 |
|
21 |
The author can be reached via e-mail to <crossfire@schmorp.de> |
22 |
*/ |
23 |
|
24 |
/** |
25 |
* \file |
26 |
* Socket general functions |
27 |
* |
28 |
* \date 2003-12-02 |
29 |
* |
30 |
* Mainly deals with initialization and higher level socket |
31 |
* maintenance (checking for lost connections and if data has arrived.) |
32 |
* The reading of data is handled in ericserver.c |
33 |
*/ |
34 |
|
35 |
|
36 |
#include <global.h> |
37 |
#include <sproto.h> |
38 |
#include <sys/types.h> |
39 |
#include <sys/time.h> |
40 |
#include <sys/socket.h> |
41 |
#include <netinet/in.h> |
42 |
#include <netdb.h> |
43 |
|
44 |
#ifdef HAVE_UNISTD_H |
45 |
# include <unistd.h> |
46 |
#endif |
47 |
|
48 |
#ifdef HAVE_ARPA_INET_H |
49 |
# include <arpa/inet.h> |
50 |
#endif |
51 |
#include <newserver.h> |
52 |
|
53 |
sockvec client_sockets; |
54 |
|
55 |
/** |
56 |
* Initializes a connection. Really, it just sets up the data structure, |
57 |
* socket setup is handled elsewhere. We do send a version to the |
58 |
* client. |
59 |
*/ |
60 |
client_socket::client_socket (int fd, const char *peername) |
61 |
: fd (fd), host (strdup (peername)) |
62 |
{ |
63 |
{ |
64 |
struct linger linger_opt; |
65 |
|
66 |
linger_opt.l_onoff = 0; |
67 |
linger_opt.l_linger = 0; |
68 |
|
69 |
if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
70 |
LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
71 |
} |
72 |
|
73 |
{ |
74 |
int bufsize = 65535; /*Supposed absolute upper limit */ |
75 |
int oldbufsize; |
76 |
int buflen = sizeof (int); |
77 |
|
78 |
if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) |
79 |
LOG (llevError, "InitConnection: Error on fcntl.\n"); |
80 |
|
81 |
if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) |
82 |
oldbufsize = 0; |
83 |
|
84 |
if (oldbufsize < bufsize) |
85 |
if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) |
86 |
LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); |
87 |
|
88 |
buflen = sizeof (oldbufsize); |
89 |
getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
90 |
} |
91 |
|
92 |
mapmode = Map0Cmd; |
93 |
darkness = 1; |
94 |
status = Ns_Add; |
95 |
mapx = 11; |
96 |
mapy = 11; |
97 |
itemcmd = 1; /* Default is version item1 command */ |
98 |
|
99 |
faces_sent_len = nrofpixmaps; |
100 |
faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
101 |
if (!faces_sent) |
102 |
fatal (OUT_OF_MEMORY); |
103 |
|
104 |
/* Do this so we don't send a face command for the client for |
105 |
* this face. Face 0 is sent to the client to say clear |
106 |
* face information. |
107 |
*/ |
108 |
faces_sent[0] = NS_FACESENT_FACE; |
109 |
|
110 |
can_write = 1; |
111 |
|
112 |
// initialisation done, kick it! |
113 |
|
114 |
{ |
115 |
packet sl; |
116 |
sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
117 |
send_packet (sl); |
118 |
} |
119 |
|
120 |
#if 0//TODO |
121 |
socket_info.nconns++; |
122 |
if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
123 |
if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
124 |
#endif |
125 |
} |
126 |
|
127 |
client_socket::~client_socket () |
128 |
{ |
129 |
status = Ns_Dead; |
130 |
} |
131 |
|
132 |
/** This sets up the socket and reads all the image information into memory. */ |
133 |
void |
134 |
init_ericserver (void) |
135 |
{ |
136 |
struct sockaddr_in insock; |
137 |
struct linger linger_opt; |
138 |
|
139 |
memset (&cst_tot, 0, sizeof (CS_Stats)); |
140 |
memset (&cst_lst, 0, sizeof (CS_Stats)); |
141 |
cst_tot.time_start = time (NULL); |
142 |
cst_lst.time_start = time (NULL); |
143 |
|
144 |
LOG (llevDebug, "Initialize new client/server data\n"); |
145 |
|
146 |
read_client_images (); |
147 |
} |
148 |
|
149 |
|
150 |
/******************************************************************************* |
151 |
* |
152 |
* Start of functions dealing with freeing of the data. |
153 |
* |
154 |
******************************************************************************/ |
155 |
|
156 |
/** Free's all the memory that ericserver allocates. */ |
157 |
void |
158 |
free_all_newserver (void) |
159 |
{ |
160 |
LOG (llevDebug, "Freeing all new client/server information.\n"); |
161 |
free_socket_images (); |
162 |
} |
163 |
|
164 |
/** |
165 |
* Frees a socket. |
166 |
* Basically, all we need to do here is free all data structures that |
167 |
* might be associated with the socket. It is up to the caller to |
168 |
* update the list |
169 |
*/ |
170 |
|
171 |
void |
172 |
free_newsocket (client_socket *ns) |
173 |
{ |
174 |
if (ns->fd >= 0) |
175 |
close (ns->fd); |
176 |
|
177 |
if (ns->stats.range) |
178 |
free (ns->stats.range); |
179 |
|
180 |
if (ns->stats.title) |
181 |
free (ns->stats.title); |
182 |
|
183 |
free (ns->host); |
184 |
|
185 |
ns->fd = -1; |
186 |
ns->stats.range = 0; |
187 |
ns->stats.title = 0; |
188 |
ns->host = 0; |
189 |
} |
190 |
|
191 |
/** Sends the 'goodbye' command to the player, and closes connection. */ |
192 |
void |
193 |
final_free_player (player *pl) |
194 |
{ |
195 |
pl->socket->send_packet ("goodbye"); |
196 |
free_newsocket (pl->socket); |
197 |
free_player (pl); |
198 |
} |
199 |
|
200 |
bool |
201 |
add_client_socket (int fd, const char *peername) |
202 |
{ |
203 |
if (checkbanned (NULL, peername)) |
204 |
{ |
205 |
LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
206 |
return false; |
207 |
} |
208 |
else |
209 |
{ |
210 |
client_socket *ns = new client_socket (dup (fd), peername); |
211 |
client_sockets.push_back (ns); |
212 |
return true; |
213 |
} |
214 |
} |
215 |
|