1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
3 | |
3 | * |
|
|
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | Copyright (C) 2001 Mark Wedel |
5 | * Copyright (©) 2001,2007 Mark Wedel |
5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | |
7 | * |
7 | This program is free software; you can redistribute it and/or modify |
8 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
8 | it under the terms of the GNU General Public License as published by |
9 | * under the terms of the GNU General Public License as published by the Free |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * Software Foundation; either version 2 of the License, or (at your option) |
10 | (at your option) any later version. |
11 | * 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, but |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
15 | GNU General Public License for more details. |
16 | * 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 along |
18 | along with this program; if not, write to the Free Software |
19 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | |
21 | * |
21 | The author can be reached via e-mail to <crossfire@schmorp.de> |
22 | * The authors 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 | |
|
|
49 | #include <algorithm> |
|
|
50 | |
53 | sockvec client_sockets; |
51 | sockvec clients; |
54 | |
52 | |
55 | /** |
53 | /** |
56 | * Initializes a connection. Really, it just sets up the data structure, |
54 | * Initializes a connection. Really, it just sets up the data structure, |
57 | * 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 |
58 | * client. |
56 | * client. |
59 | */ |
57 | */ |
60 | client_socket::client_socket (int fd, const char *peername) |
58 | client::client (int fd, const char *peername) |
61 | : fd (fd), host (strdup (peername)) |
59 | : fd (fd), host (strdup (peername)), |
|
|
60 | socket_ev (this, &client::socket_cb), |
|
|
61 | cmd_ev (this, &client::cmd_cb) |
62 | { |
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 | |
63 | { |
67 | { |
64 | struct linger linger_opt; |
68 | struct linger linger_opt; |
65 | |
69 | |
66 | linger_opt.l_onoff = 0; |
70 | linger_opt.l_onoff = 0; |
67 | linger_opt.l_linger = 0; |
71 | linger_opt.l_linger = 0; |
68 | |
72 | |
69 | 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))) |
70 | 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 |
71 | } |
117 | } |
72 | |
118 | |
73 | { |
119 | { |
74 | int bufsize = 65535; /*Supposed absolute upper limit */ |
120 | int bufsize = 65535; /*Supposed absolute upper limit */ |
75 | int oldbufsize; |
121 | int oldbufsize; |
… | |
… | |
87 | |
133 | |
88 | buflen = sizeof (oldbufsize); |
134 | buflen = sizeof (oldbufsize); |
89 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
135 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
90 | } |
136 | } |
91 | |
137 | |
|
|
138 | state = ST_SETUP; |
92 | mapmode = Map0Cmd; |
139 | mapmode = Map0Cmd; |
93 | darkness = 1; |
140 | darkness = 1; |
94 | status = Ns_Add; |
|
|
95 | mapx = 11; |
141 | mapx = 11; |
96 | mapy = 11; |
142 | mapy = 11; |
97 | itemcmd = 1; /* Default is version item1 command */ |
143 | itemcmd = 1; /* Default is version item1 command */ |
98 | |
144 | max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default |
99 | faces_sent_len = nrofpixmaps; |
|
|
100 | faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
|
|
101 | if (!faces_sent) |
|
|
102 | fatal (OUT_OF_MEMORY); |
|
|
103 | |
145 | |
104 | /* 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 |
105 | * 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 |
106 | * face information. |
148 | * face information. |
107 | */ |
149 | */ |
108 | faces_sent[0] = NS_FACESENT_FACE; |
150 | faces_sent[0] = true; |
109 | |
151 | |
110 | can_write = 1; |
152 | socket_ev.prio (PE_PRIO_NORMAL); |
|
|
153 | socket_ev.fd (fd); |
|
|
154 | socket_ev.poll (PE_R); |
|
|
155 | |
|
|
156 | cmd_ev.prio (PE_PRIO_NORMAL); |
111 | |
157 | |
112 | // initialisation done, kick it! |
158 | // initialisation done, kick it! |
113 | |
|
|
114 | { |
|
|
115 | packet sl; |
|
|
116 | sl.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); |
117 | send_packet (sl); |
160 | flush (); |
118 | } |
|
|
119 | |
161 | |
120 | #if 0//TODO |
162 | reset_stats (); |
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 | |
163 | |
127 | client_socket::~client_socket () |
164 | clients.insert (this); |
128 | { |
|
|
129 | status = Ns_Dead; |
|
|
130 | } |
165 | } |
131 | |
166 | |
132 | /** This sets up the socket and reads all the image information into memory. */ |
167 | client::~client () |
|
|
168 | { |
|
|
169 | clients.erase (this); |
|
|
170 | |
|
|
171 | free (stats.range); |
|
|
172 | free (stats.title); |
|
|
173 | free (host); |
|
|
174 | } |
|
|
175 | |
133 | void |
176 | void |
134 | init_ericserver (void) |
177 | client::do_destroy () |
135 | { |
178 | { |
136 | struct sockaddr_in insock; |
179 | attachable::do_destroy (); |
137 | struct linger linger_opt; |
|
|
138 | |
180 | |
139 | memset (&cst_tot, 0, sizeof (CS_Stats)); |
181 | if (pl) |
140 | memset (&cst_lst, 0, sizeof (CS_Stats)); |
182 | pl->disconnect (); |
141 | cst_tot.time_start = time (NULL); |
|
|
142 | cst_lst.time_start = time (NULL); |
|
|
143 | |
183 | |
144 | LOG (llevDebug, "Initialize new client/server data\n"); |
184 | if (fd >= 0) |
|
|
185 | { |
|
|
186 | send_packet ("goodbye"); |
|
|
187 | flush (); |
145 | |
188 | |
146 | read_client_images (); |
189 | close (fd); |
147 | } |
190 | } |
148 | |
191 | |
|
|
192 | state = ST_DEAD; |
|
|
193 | |
|
|
194 | socket_ev.suspend (); |
|
|
195 | cmd_ev.suspend (); |
|
|
196 | |
|
|
197 | refcnt_dec (); // socket no longer open |
|
|
198 | } |
|
|
199 | |
|
|
200 | void |
|
|
201 | client::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; |
|
|
229 | } |
149 | |
230 | |
150 | /******************************************************************************* |
231 | /******************************************************************************* |
151 | * |
232 | * |
152 | * Start of functions dealing with freeing of the data. |
233 | * Start of functions dealing with freeing of the data. |
153 | * |
234 | * |
… | |
… | |
159 | { |
240 | { |
160 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
241 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
161 | free_socket_images (); |
242 | free_socket_images (); |
162 | } |
243 | } |
163 | |
244 | |
164 | /** |
245 | client * |
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) |
246 | client::create (int fd, const char *peername) |
202 | { |
247 | { |
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); |
248 | client *ns = new client (dup (fd), peername); |
211 | client_sockets.push_back (ns); |
249 | ns->instantiate (); // effectively a nop right now |
212 | return true; |
250 | INVOKE_CLIENT (CONNECT, ns); |
213 | } |
251 | return ns; |
214 | } |
252 | } |
215 | |
253 | |