1 | /* |
1 | /* |
2 | * CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * Copyright (C) 2001 Mark Wedel |
5 | * Copyright (©) 2001,2007 Mark Wedel |
6 | * Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
7 | * |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
8 | * Deliantra is free software: you can redistribute it and/or modify it under |
9 | * it under the terms of the GNU General Public License as published by |
9 | * the terms of the Affero GNU General Public License as published by the |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | * Free Software Foundation, either version 3 of the License, or (at your |
11 | * (at your option) any later version. |
11 | * option) any later version. |
12 | * |
12 | * |
13 | * 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, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
17 | * |
17 | * |
18 | * You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the Affero GNU General Public License |
19 | * along with this program; if not, write to the Free Software |
19 | * and the GNU General Public License along with this program. If not, see |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * <http://www.gnu.org/licenses/>. |
21 | * |
21 | * |
22 | * The author can be reached via e-mail to <crossfire@schmorp.de> |
22 | * The authors can be reached via e-mail to <support@deliantra.net> |
23 | */ |
23 | */ |
24 | |
24 | |
25 | /** |
25 | /** |
26 | * \file |
26 | * \file |
27 | * Socket general functions |
27 | * Socket general functions |
… | |
… | |
46 | #include <unistd.h> |
46 | #include <unistd.h> |
47 | #include <arpa/inet.h> |
47 | #include <arpa/inet.h> |
48 | |
48 | |
49 | #include <algorithm> |
49 | #include <algorithm> |
50 | |
50 | |
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51 | // use relatively small values, as we do not expect to receive much, |
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52 | // and we do userspace write buffering |
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53 | // 8kb limits throughput to roughly 66kb/s |
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54 | #define SOCKET_RCVBUF 8192 |
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55 | #define SOCKET_SNDBUF 16384 |
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56 | |
51 | sockvec clients; |
57 | sockvec clients; |
52 | |
58 | |
53 | /** |
59 | /** |
54 | * Initializes a connection. Really, it just sets up the data structure, |
60 | * Initializes a connection. Really, it just sets up the data structure, |
55 | * socket setup is handled elsewhere. We do send a version to the |
61 | * socket setup is handled elsewhere. We do send a version to the |
56 | * client. |
62 | * client. |
57 | */ |
63 | */ |
58 | client::client (int fd, const char *peername) |
64 | client::client (int fd, const char *peername) |
59 | : fd (fd), host (strdup (peername)), |
65 | : fd (fd), host (strdup (peername)), |
60 | socket_ev (this, &client::socket_cb), |
66 | socket_ev (this, &client::socket_cb) |
61 | cmd_ev (this, &client::cmd_cb), |
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62 | cc_inv (this), cc_other (this) |
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63 | { |
67 | { |
64 | refcnt_inc (); // the socket is an external reference |
68 | refcnt_inc (); // the socket is an external reference |
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69 | |
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70 | mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead |
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71 | |
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72 | socket_timeout = 16.; |
65 | |
73 | |
66 | { |
74 | { |
67 | struct linger linger_opt; |
75 | struct linger linger_opt; |
68 | |
76 | |
69 | linger_opt.l_onoff = 0; |
77 | linger_opt.l_onoff = 0; |
70 | linger_opt.l_linger = 0; |
78 | linger_opt.l_linger = 0; |
71 | |
79 | |
72 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
80 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
73 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
81 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
74 | } |
82 | } |
75 | |
83 | |
76 | { |
84 | { |
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85 | int val; |
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86 | |
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87 | #ifdef SO_RCVBUF |
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88 | val = SOCKET_RCVBUF; |
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89 | if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val))) |
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90 | LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno)); |
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91 | #endif |
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92 | |
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93 | #ifdef SO_SNDBUF |
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94 | val = SOCKET_SNDBUF; |
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95 | if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val))) |
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96 | LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno)); |
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97 | #endif |
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98 | |
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99 | #ifdef IP_TOS |
77 | int val = IPTOS_LOWDELAY; |
100 | val = IPTOS_LOWDELAY; |
78 | |
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79 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
101 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
80 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
102 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
81 | } |
103 | #endif |
82 | |
104 | |
83 | { |
105 | #ifdef TCP_NODELAY |
84 | int val = 1; |
106 | val = 1; |
85 | |
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86 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
107 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
87 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
108 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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109 | #endif |
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110 | |
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111 | // set some very aggressive keepalive parameters |
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112 | #ifdef TCP_KEEPIDLE |
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113 | val = 1; |
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114 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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115 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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116 | #endif |
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117 | |
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118 | #ifdef TCP_KEEPCNT |
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119 | val = 3; |
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120 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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121 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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122 | #endif |
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123 | |
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124 | #ifdef TCP_KEEPINTVL |
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125 | val = 1; |
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126 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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127 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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128 | #endif |
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129 | |
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130 | // try to find the mss value in use |
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131 | #ifdef TCP_MAXSEG |
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132 | socklen_t sl = sizeof (val); |
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133 | if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val)) |
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134 | mss = val; |
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135 | #endif |
88 | } |
136 | } |
89 | |
137 | |
90 | #ifdef __linux__ |
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91 | { |
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92 | int val; |
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93 | |
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94 | // set some very aggressive keepalive parameters |
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95 | val = 10; |
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96 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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97 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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98 | |
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99 | val = 5; |
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100 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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101 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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102 | |
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103 | val = 1; |
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104 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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105 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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106 | } |
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107 | #endif |
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108 | |
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109 | { |
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110 | int bufsize = 65535; /*Supposed absolute upper limit */ |
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111 | int oldbufsize; |
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112 | int buflen = sizeof (int); |
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113 | |
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114 | if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) |
138 | if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) |
115 | LOG (llevError, "InitConnection: Error on fcntl.\n"); |
139 | LOG (llevError, "InitConnection: Error on fcntl.\n"); |
116 | |
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117 | if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) |
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118 | oldbufsize = 0; |
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119 | |
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120 | if (oldbufsize < bufsize) |
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121 | if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) |
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122 | LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); |
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123 | |
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124 | buflen = sizeof (oldbufsize); |
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125 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
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126 | } |
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127 | |
140 | |
128 | state = ST_SETUP; |
141 | state = ST_SETUP; |
129 | mapmode = Map0Cmd; |
142 | mapmode = Map1aCmd; |
130 | darkness = 1; |
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131 | mapx = 11; |
143 | mapx = 11; |
132 | mapy = 11; |
144 | mapy = 11; |
133 | itemcmd = 1; /* Default is version item1 command */ |
145 | itemcmd = 1; /* Default is version item1 command */ |
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146 | max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default |
134 | |
147 | |
135 | /* Do this so we don't send a face command for the client for |
148 | /* Do this so we don't send a face command for the client for |
136 | * this face. Face 0 is sent to the client to say clear |
149 | * this face. Face 0 is sent to the client to say clear |
137 | * face information. |
150 | * face information. |
138 | */ |
151 | */ |
139 | faces_sent[0] = true; |
152 | faces_sent[0] = true; |
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153 | fx_want [FT_FACE] = true; // all clients must support image faces |
140 | |
154 | |
141 | socket_ev.prio (PE_PRIO_NORMAL); |
155 | socket_ev.set (fd, EV_READ); |
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156 | socket_ev.prio (2); // one higher than the ticker priority |
142 | socket_ev.fd (fd); |
157 | socket_ev.start (); |
143 | socket_ev.poll (PE_R); |
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144 | |
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145 | cmd_ev.prio (PE_PRIO_NORMAL); |
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146 | |
158 | |
147 | // initialisation done, kick it! |
159 | // initialisation done, kick it! |
148 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
160 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
149 | flush (); |
161 | flush (); |
150 | |
162 | |
… | |
… | |
155 | |
167 | |
156 | client::~client () |
168 | client::~client () |
157 | { |
169 | { |
158 | clients.erase (this); |
170 | clients.erase (this); |
159 | |
171 | |
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172 | mapinfo_queue_clear (); |
160 | free (stats.range); |
173 | free (stats.range); |
161 | free (stats.title); |
174 | free (stats.title); |
162 | free (host); |
175 | free (host); |
163 | } |
176 | } |
164 | |
177 | |
… | |
… | |
178 | close (fd); |
191 | close (fd); |
179 | } |
192 | } |
180 | |
193 | |
181 | state = ST_DEAD; |
194 | state = ST_DEAD; |
182 | |
195 | |
183 | socket_ev.suspend (); |
196 | socket_ev.stop (); |
184 | cmd_ev.suspend (); |
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185 | |
197 | |
186 | refcnt_dec (); // socket no longer open |
198 | refcnt_dec (); // socket no longer open |
187 | } |
199 | } |
188 | |
200 | |
189 | void |
201 | void |
… | |
… | |
201 | last_resist[i] = -1; |
213 | last_resist[i] = -1; |
202 | |
214 | |
203 | last_weapon_sp = -1; |
215 | last_weapon_sp = -1; |
204 | last_level = -1; |
216 | last_level = -1; |
205 | last_stats.exp = -1; |
217 | last_stats.exp = -1; |
206 | last_weight = (uint32) - 1; |
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207 | last_flags = 0; |
218 | last_flags = 0; |
208 | last_weight = 0; |
219 | last_weight = -1; |
209 | last_weight_limit = 0; |
220 | last_weight_limit = 0; |
210 | last_path_attuned = 0; |
221 | last_path_attuned = 0; |
211 | last_path_repelled = 0; |
222 | last_path_repelled = 0; |
212 | last_path_denied = 0; |
223 | last_path_denied = 0; |
213 | last_speed = 0; |
224 | last_speed = 0; |
214 | flags = 0; |
225 | last_flags = 0; |
215 | |
226 | |
216 | static living zero_living; |
227 | static living zero_living; |
217 | last_stats = zero_living; |
228 | last_stats = zero_living; |
218 | } |
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219 | |
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220 | /** This sets up the socket and reads all the image information into memory. */ |
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221 | void |
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222 | init_ericserver (void) |
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223 | { |
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224 | cst_tot.time_start = time (NULL); |
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225 | cst_lst.time_start = time (NULL); |
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226 | |
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227 | LOG (llevDebug, "Initialize new client/server data\n"); |
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228 | } |
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229 | |
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230 | |
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231 | /******************************************************************************* |
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232 | * |
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233 | * Start of functions dealing with freeing of the data. |
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234 | * |
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235 | ******************************************************************************/ |
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236 | |
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237 | /** Free's all the memory that ericserver allocates. */ |
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238 | void |
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239 | free_all_newserver (void) |
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240 | { |
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241 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
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242 | free_socket_images (); |
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243 | } |
229 | } |
244 | |
230 | |
245 | client * |
231 | client * |
246 | client::create (int fd, const char *peername) |
232 | client::create (int fd, const char *peername) |
247 | { |
233 | { |