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 |
… | |
… | |
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> |
46 | #include <newserver.h> |
|
|
47 | |
48 | |
|
|
49 | #include <algorithm> |
|
|
50 | |
48 | sockvec client_sockets; |
51 | sockvec clients; |
49 | |
52 | |
50 | /** |
53 | /** |
51 | * Initializes a connection. Really, it just sets up the data structure, |
54 | * Initializes a connection. Really, it just sets up the data structure, |
52 | * 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 |
53 | * client. |
56 | * client. |
54 | */ |
57 | */ |
55 | client_socket::client_socket (int fd, const char *peername) |
58 | client::client (int fd, const char *peername) |
56 | : fd (fd), host (strdup (peername)), |
59 | : fd (fd), host (strdup (peername)), |
57 | socket_ev (this, &client_socket::socket_cb) |
60 | socket_ev (this, &client::socket_cb), |
|
|
61 | cmd_ev (this, &client::cmd_cb), |
|
|
62 | cc_inv (this), cc_other (this) |
58 | { |
63 | { |
59 | { |
64 | { |
60 | struct linger linger_opt; |
65 | struct linger linger_opt; |
61 | |
66 | |
62 | linger_opt.l_onoff = 0; |
67 | linger_opt.l_onoff = 0; |
63 | linger_opt.l_linger = 0; |
68 | linger_opt.l_linger = 0; |
64 | |
69 | |
65 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
70 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
66 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
71 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
67 | } |
72 | } |
|
|
73 | |
|
|
74 | { |
|
|
75 | int val = IPTOS_LOWDELAY; |
|
|
76 | |
|
|
77 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
|
|
78 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
|
|
79 | } |
|
|
80 | |
|
|
81 | { |
|
|
82 | int val = 1; |
|
|
83 | |
|
|
84 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
|
|
85 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
|
|
86 | } |
|
|
87 | |
|
|
88 | #ifdef __linux__ |
|
|
89 | { |
|
|
90 | int val; |
|
|
91 | |
|
|
92 | // set some very aggressive keepalive parameters |
|
|
93 | val = 10; |
|
|
94 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
|
|
95 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
|
|
96 | |
|
|
97 | val = 5; |
|
|
98 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
|
|
99 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
|
|
100 | |
|
|
101 | val = 1; |
|
|
102 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
|
|
103 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
|
|
104 | } |
|
|
105 | #endif |
68 | |
106 | |
69 | { |
107 | { |
70 | int bufsize = 65535; /*Supposed absolute upper limit */ |
108 | int bufsize = 65535; /*Supposed absolute upper limit */ |
71 | int oldbufsize; |
109 | int oldbufsize; |
72 | int buflen = sizeof (int); |
110 | int buflen = sizeof (int); |
… | |
… | |
83 | |
121 | |
84 | buflen = sizeof (oldbufsize); |
122 | buflen = sizeof (oldbufsize); |
85 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
123 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
86 | } |
124 | } |
87 | |
125 | |
|
|
126 | state = ST_SETUP; |
88 | mapmode = Map0Cmd; |
127 | mapmode = Map0Cmd; |
89 | darkness = 1; |
128 | darkness = 1; |
90 | status = Ns_Add; |
|
|
91 | mapx = 11; |
129 | mapx = 11; |
92 | mapy = 11; |
130 | mapy = 11; |
93 | itemcmd = 1; /* Default is version item1 command */ |
131 | itemcmd = 1; /* Default is version item1 command */ |
94 | |
132 | |
95 | faces_sent_len = nrofpixmaps; |
133 | faces_sent = salloc0<uint8> (nrofpixmaps); |
96 | faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
|
|
97 | if (!faces_sent) |
|
|
98 | fatal (OUT_OF_MEMORY); |
|
|
99 | |
134 | |
100 | /* Do this so we don't send a face command for the client for |
135 | /* 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 |
136 | * this face. Face 0 is sent to the client to say clear |
102 | * face information. |
137 | * face information. |
103 | */ |
138 | */ |
104 | faces_sent[0] = NS_FACESENT_FACE; |
139 | faces_sent[0] = NS_FACESENT_FACE; |
105 | |
140 | |
|
|
141 | // socket I/O is low priority |
|
|
142 | // we prefer to have the server run instead of handling client requests |
|
|
143 | socket_ev.prio (PE_PRIO_NORMAL + 1); |
106 | socket_ev.fd (fd); |
144 | socket_ev.fd (fd); |
|
|
145 | socket_ev.poll (PE_R); |
|
|
146 | |
|
|
147 | // command handling is even lower priority |
|
|
148 | // that way no client can monopolise the server |
|
|
149 | cmd_ev.prio (PE_PRIO_NORMAL + 2); |
107 | |
150 | |
108 | // initialisation done, kick it! |
151 | // initialisation done, kick it! |
109 | |
|
|
110 | { |
|
|
111 | packet sl; |
|
|
112 | sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
152 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
113 | send_packet (sl); |
|
|
114 | flush (); |
153 | flush (); |
115 | } |
154 | |
|
|
155 | // clients are externally referenced by the socket |
|
|
156 | refcnt_inc (); |
|
|
157 | clients.push_back (this); |
116 | |
158 | |
117 | #if 0//TODO |
159 | #if 0//TODO |
118 | socket_info.nconns++; |
160 | socket_info.nconns++; |
119 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
161 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
120 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
162 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
121 | #endif |
163 | #endif |
122 | } |
164 | } |
123 | |
165 | |
124 | client_socket::~client_socket () |
166 | client::~client () |
125 | { |
167 | { |
126 | status = Ns_Dead; |
168 | sockvec::iterator i = find (clients.begin (), clients.end (), this); |
|
|
169 | if (i != clients.end ()) |
|
|
170 | clients.erase (i); |
|
|
171 | |
|
|
172 | sfree<uint8> (faces_sent, nrofpixmaps); |
|
|
173 | free (stats.range); |
|
|
174 | free (stats.title); |
|
|
175 | free (host); |
|
|
176 | } |
|
|
177 | |
|
|
178 | void |
|
|
179 | client::do_destroy () |
|
|
180 | { |
|
|
181 | attachable::do_destroy (); |
|
|
182 | |
|
|
183 | if (pl) |
|
|
184 | pl->disconnect (); |
|
|
185 | |
|
|
186 | if (fd >= 0) |
|
|
187 | close (fd); |
|
|
188 | |
|
|
189 | state = ST_DEAD; |
|
|
190 | |
|
|
191 | socket_ev.suspend (); |
|
|
192 | cmd_ev.suspend (); |
|
|
193 | |
|
|
194 | // socket now longer references us |
|
|
195 | refcnt_dec (); |
127 | } |
196 | } |
128 | |
197 | |
129 | /** This sets up the socket and reads all the image information into memory. */ |
198 | /** This sets up the socket and reads all the image information into memory. */ |
130 | void |
199 | void |
131 | init_ericserver (void) |
200 | init_ericserver (void) |
132 | { |
201 | { |
133 | struct sockaddr_in insock; |
|
|
134 | struct linger linger_opt; |
|
|
135 | |
|
|
136 | memset (&cst_tot, 0, sizeof (CS_Stats)); |
|
|
137 | memset (&cst_lst, 0, sizeof (CS_Stats)); |
|
|
138 | cst_tot.time_start = time (NULL); |
202 | cst_tot.time_start = time (NULL); |
139 | cst_lst.time_start = time (NULL); |
203 | cst_lst.time_start = time (NULL); |
140 | |
204 | |
141 | LOG (llevDebug, "Initialize new client/server data\n"); |
205 | LOG (llevDebug, "Initialize new client/server data\n"); |
142 | |
206 | |
… | |
… | |
156 | { |
220 | { |
157 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
221 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
158 | free_socket_images (); |
222 | free_socket_images (); |
159 | } |
223 | } |
160 | |
224 | |
161 | /** |
225 | client * |
162 | * Frees a socket. |
|
|
163 | * Basically, all we need to do here is free all data structures that |
|
|
164 | * might be associated with the socket. It is up to the caller to |
|
|
165 | * update the list |
|
|
166 | */ |
|
|
167 | |
|
|
168 | void |
|
|
169 | free_newsocket (client_socket *ns) |
|
|
170 | { |
|
|
171 | if (ns->fd >= 0) |
|
|
172 | close (ns->fd); |
|
|
173 | |
|
|
174 | if (ns->stats.range) |
|
|
175 | free (ns->stats.range); |
|
|
176 | |
|
|
177 | if (ns->stats.title) |
|
|
178 | free (ns->stats.title); |
|
|
179 | |
|
|
180 | free (ns->host); |
|
|
181 | |
|
|
182 | ns->fd = -1; |
|
|
183 | ns->stats.range = 0; |
|
|
184 | ns->stats.title = 0; |
|
|
185 | ns->host = 0; |
|
|
186 | } |
|
|
187 | |
|
|
188 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
|
|
189 | void |
|
|
190 | final_free_player (player *pl) |
|
|
191 | { |
|
|
192 | pl->socket->send_packet ("goodbye"); |
|
|
193 | free_newsocket (pl->socket); |
|
|
194 | free_player (pl); |
|
|
195 | } |
|
|
196 | |
|
|
197 | bool |
|
|
198 | add_client_socket (int fd, const char *peername) |
226 | client::create (int fd, const char *peername) |
199 | { |
227 | { |
200 | if (checkbanned (NULL, peername)) |
228 | if (checkbanned (NULL, peername)) |
201 | { |
229 | { |
202 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
230 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
203 | return false; |
231 | return 0; |
204 | } |
232 | } |
205 | else |
233 | else |
206 | { |
234 | { |
207 | client_socket *ns = new client_socket (dup (fd), peername); |
235 | client *ns = new client (dup (fd), peername); |
208 | client_sockets.push_back (ns); |
236 | |
|
|
237 | ns->instantiate (); // effectively a nop right now |
|
|
238 | |
|
|
239 | INVOKE_CLIENT (CONNECT, ns); |
|
|
240 | |
209 | return true; |
241 | return ns; |
210 | } |
242 | } |
211 | } |
243 | } |
212 | |
244 | |