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 | * |
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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 | * |
… | |
… | |
55 | * client. |
56 | * client. |
56 | */ |
57 | */ |
57 | client::client (int fd, const char *peername) |
58 | client::client (int fd, const char *peername) |
58 | : fd (fd), host (strdup (peername)), |
59 | : fd (fd), host (strdup (peername)), |
59 | socket_ev (this, &client::socket_cb), |
60 | socket_ev (this, &client::socket_cb), |
60 | cmd_ev (this, &client::cmd_cb), |
61 | cmd_ev (this, &client::cmd_cb) |
61 | cc_inv (this), cc_other (this) |
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62 | { |
62 | { |
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63 | refcnt_inc (); // the socket is an external reference |
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64 | |
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65 | mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead |
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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, "SO_LINGER: %s\n", strerror (errno)); |
74 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
71 | } |
75 | } |
72 | |
76 | |
73 | { |
77 | { |
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78 | int val; |
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79 | |
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80 | #ifdef IP_TOS |
74 | int val = IPTOS_LOWDELAY; |
81 | val = IPTOS_LOWDELAY; |
75 | |
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76 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
82 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
77 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
83 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
78 | } |
84 | #endif |
79 | |
85 | |
80 | { |
86 | #ifdef TCP_NODELAY |
81 | int val = 1; |
87 | val = 1; |
82 | |
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83 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
88 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
84 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
89 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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90 | #endif |
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91 | |
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92 | // set some very aggressive keepalive parameters |
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93 | #ifdef TCP_KEEPIDLE |
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94 | val = 1; |
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95 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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96 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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97 | #endif |
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98 | |
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99 | #ifdef TCP_KEEPCNT |
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100 | val = 3; |
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101 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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102 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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103 | #endif |
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104 | |
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105 | #ifdef TCP_KEEPINTVL |
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106 | val = 1; |
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107 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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108 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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109 | #endif |
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110 | |
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111 | // try to find the mss value in use |
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112 | #ifdef TCP_MAXSEG |
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113 | socklen_t sl = sizeof (val); |
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114 | if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val)) |
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115 | mss = val; |
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116 | #endif |
85 | } |
117 | } |
86 | |
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87 | #ifdef __linux__ |
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88 | { |
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89 | int val; |
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90 | |
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91 | // set some very aggressive keepalive parameters |
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92 | val = 10; |
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93 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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94 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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95 | |
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96 | val = 5; |
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97 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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98 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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99 | |
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100 | val = 1; |
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101 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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102 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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103 | } |
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104 | #endif |
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105 | |
118 | |
106 | { |
119 | { |
107 | int bufsize = 65535; /*Supposed absolute upper limit */ |
120 | int bufsize = 65535; /*Supposed absolute upper limit */ |
108 | int oldbufsize; |
121 | int oldbufsize; |
109 | int buflen = sizeof (int); |
122 | int buflen = sizeof (int); |
… | |
… | |
126 | mapmode = Map0Cmd; |
139 | mapmode = Map0Cmd; |
127 | darkness = 1; |
140 | darkness = 1; |
128 | mapx = 11; |
141 | mapx = 11; |
129 | mapy = 11; |
142 | mapy = 11; |
130 | itemcmd = 1; /* Default is version item1 command */ |
143 | itemcmd = 1; /* Default is version item1 command */ |
131 | |
144 | max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default |
132 | faces_sent = salloc0<uint8> (nrofpixmaps); |
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133 | |
145 | |
134 | /* 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 |
135 | * 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 |
136 | * face information. |
148 | * face information. |
137 | */ |
149 | */ |
138 | faces_sent[0] = NS_FACESENT_FACE; |
150 | faces_sent[0] = true; |
139 | |
151 | |
140 | // socket I/O is low priority |
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141 | // we prefer to have the server run instead of handling client requests |
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142 | socket_ev.prio (PE_PRIO_NORMAL + 1); |
152 | socket_ev.prio (PE_PRIO_NORMAL); |
143 | socket_ev.fd (fd); |
153 | socket_ev.fd (fd); |
144 | socket_ev.poll (PE_R); |
154 | socket_ev.poll (PE_R); |
145 | |
155 | |
146 | // command handling is even lower priority |
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147 | // that way no client can monopolise the server |
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148 | cmd_ev.prio (PE_PRIO_NORMAL + 2); |
156 | cmd_ev.prio (PE_PRIO_NORMAL); |
149 | |
157 | |
150 | // initialisation done, kick it! |
158 | // initialisation done, kick it! |
151 | 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); |
152 | flush (); |
160 | flush (); |
153 | |
161 | |
154 | // clients are externally referenced by the socket |
162 | reset_stats (); |
155 | refcnt_inc (); |
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156 | clients.push_back (this); |
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157 | |
163 | |
158 | #if 0//TODO |
164 | clients.insert (this); |
159 | socket_info.nconns++; |
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160 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
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161 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
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162 | #endif |
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163 | } |
165 | } |
164 | |
166 | |
165 | client::~client () |
167 | client::~client () |
166 | { |
168 | { |
167 | sockvec::iterator i = find (clients.begin (), clients.end (), this); |
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168 | if (i != clients.end ()) |
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169 | clients.erase (i); |
169 | clients.erase (this); |
170 | |
170 | |
171 | sfree<uint8> (faces_sent, nrofpixmaps); |
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172 | free (stats.range); |
171 | free (stats.range); |
173 | free (stats.title); |
172 | free (stats.title); |
174 | free (host); |
173 | free (host); |
175 | } |
174 | } |
176 | |
175 | |
… | |
… | |
181 | |
180 | |
182 | if (pl) |
181 | if (pl) |
183 | pl->disconnect (); |
182 | pl->disconnect (); |
184 | |
183 | |
185 | if (fd >= 0) |
184 | if (fd >= 0) |
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185 | { |
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186 | send_packet ("goodbye"); |
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187 | flush (); |
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188 | |
186 | close (fd); |
189 | close (fd); |
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190 | } |
187 | |
191 | |
188 | state = ST_DEAD; |
192 | state = ST_DEAD; |
189 | |
193 | |
190 | socket_ev.suspend (); |
194 | socket_ev.suspend (); |
191 | cmd_ev.suspend (); |
195 | cmd_ev.suspend (); |
192 | |
196 | |
193 | // socket now longer references us |
197 | refcnt_dec (); // socket no longer open |
194 | refcnt_dec (); |
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195 | } |
198 | } |
196 | |
199 | |
197 | /** This sets up the socket and reads all the image information into memory. */ |
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198 | void |
200 | void |
199 | init_ericserver (void) |
201 | client::reset_stats () |
200 | { |
202 | { |
201 | cst_tot.time_start = time (NULL); |
203 | /* we need to clear these to -1 and not zero - otherwise, |
202 | cst_lst.time_start = time (NULL); |
204 | * if a player quits and starts a new character, we wont |
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205 | * send new values to the client, as things like exp start |
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206 | * at zero. |
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207 | */ |
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208 | for (int i = 0; i < NUM_SKILLS; i++) |
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209 | last_skill_exp[i] = -1; |
203 | |
210 | |
204 | LOG (llevDebug, "Initialize new client/server data\n"); |
211 | for (int i = 0; i < NROFATTACKS; i++) |
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212 | last_resist[i] = -1; |
205 | |
213 | |
206 | read_client_images (); |
214 | last_weapon_sp = -1; |
207 | } |
215 | last_level = -1; |
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216 | last_stats.exp = -1; |
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217 | last_weight = (uint32) - 1; |
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218 | last_flags = 0; |
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219 | last_weight = 0; |
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220 | last_weight_limit = 0; |
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221 | last_path_attuned = 0; |
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222 | last_path_repelled = 0; |
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223 | last_path_denied = 0; |
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224 | last_speed = 0; |
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225 | last_flags = 0; |
208 | |
226 | |
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227 | static living zero_living; |
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228 | last_stats = zero_living; |
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229 | } |
209 | |
230 | |
210 | /******************************************************************************* |
231 | /******************************************************************************* |
211 | * |
232 | * |
212 | * Start of functions dealing with freeing of the data. |
233 | * Start of functions dealing with freeing of the data. |
213 | * |
234 | * |
… | |
… | |
222 | } |
243 | } |
223 | |
244 | |
224 | client * |
245 | client * |
225 | client::create (int fd, const char *peername) |
246 | client::create (int fd, const char *peername) |
226 | { |
247 | { |
227 | if (checkbanned (NULL, peername)) |
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228 | { |
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229 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
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230 | return 0; |
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231 | } |
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232 | else |
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233 | { |
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234 | client *ns = new client (dup (fd), peername); |
248 | client *ns = new client (dup (fd), peername); |
235 | |
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236 | ns->instantiate (); // effectively a nop right now |
249 | ns->instantiate (); // effectively a nop right now |
237 | |
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238 | INVOKE_CLIENT (CONNECT, ns); |
250 | INVOKE_CLIENT (CONNECT, ns); |
239 | |
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240 | return ns; |
251 | return ns; |
241 | } |
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242 | } |
252 | } |
243 | |
253 | |