1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game for X-windows |
3 | |
3 | * |
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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 |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. |
11 | * (at your option) 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, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | * GNU General Public License 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 |
18 | along with this program; if not, write to the Free Software |
19 | * along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | |
21 | * |
21 | The author can be reached via e-mail to <crossfire@schmorp.de> |
22 | * The author 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 | |
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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> |
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42 | #include <netinet/tcp.h> |
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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> |
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48 | |
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49 | #include <algorithm> |
46 | |
50 | |
47 | sockvec clients; |
51 | sockvec clients; |
48 | |
52 | |
49 | /** |
53 | /** |
50 | * Initializes a connection. Really, it just sets up the data structure, |
54 | * Initializes a connection. Really, it just sets up the data structure, |
51 | * 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 |
52 | * client. |
56 | * client. |
53 | */ |
57 | */ |
54 | client::client (int fd, const char *peername) |
58 | client::client (int fd, const char *peername) |
55 | : fd (fd), host (strdup (peername)), |
59 | : fd (fd), host (strdup (peername)), |
56 | socket_ev (this, &client::socket_cb) |
60 | socket_ev (this, &client::socket_cb), |
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61 | cmd_ev (this, &client::cmd_cb), |
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62 | cc_inv (this), cc_other (this) |
57 | { |
63 | { |
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64 | refcnt_inc (); // the socket is an external reference |
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65 | |
58 | { |
66 | { |
59 | struct linger linger_opt; |
67 | struct linger linger_opt; |
60 | |
68 | |
61 | linger_opt.l_onoff = 0; |
69 | linger_opt.l_onoff = 0; |
62 | linger_opt.l_linger = 0; |
70 | linger_opt.l_linger = 0; |
63 | |
71 | |
64 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
72 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
65 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
73 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
66 | } |
74 | } |
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75 | |
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76 | { |
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77 | int val = IPTOS_LOWDELAY; |
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78 | |
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79 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
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80 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
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81 | } |
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82 | |
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83 | { |
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84 | int val = 1; |
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85 | |
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86 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
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87 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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88 | } |
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89 | |
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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 |
67 | |
108 | |
68 | { |
109 | { |
69 | int bufsize = 65535; /*Supposed absolute upper limit */ |
110 | int bufsize = 65535; /*Supposed absolute upper limit */ |
70 | int oldbufsize; |
111 | int oldbufsize; |
71 | int buflen = sizeof (int); |
112 | int buflen = sizeof (int); |
… | |
… | |
82 | |
123 | |
83 | buflen = sizeof (oldbufsize); |
124 | buflen = sizeof (oldbufsize); |
84 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
125 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
85 | } |
126 | } |
86 | |
127 | |
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128 | state = ST_SETUP; |
87 | mapmode = Map0Cmd; |
129 | mapmode = Map0Cmd; |
88 | darkness = 1; |
130 | darkness = 1; |
89 | status = Ns_Add; |
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90 | mapx = 11; |
131 | mapx = 11; |
91 | mapy = 11; |
132 | mapy = 11; |
92 | itemcmd = 1; /* Default is version item1 command */ |
133 | itemcmd = 1; /* Default is version item1 command */ |
93 | |
134 | |
94 | faces_sent_len = nrofpixmaps; |
135 | faces_sent = salloc0<uint8> (nrofpixmaps); |
95 | faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
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96 | if (!faces_sent) |
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97 | fatal (OUT_OF_MEMORY); |
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98 | |
136 | |
99 | /* Do this so we don't send a face command for the client for |
137 | /* Do this so we don't send a face command for the client for |
100 | * this face. Face 0 is sent to the client to say clear |
138 | * this face. Face 0 is sent to the client to say clear |
101 | * face information. |
139 | * face information. |
102 | */ |
140 | */ |
103 | faces_sent[0] = NS_FACESENT_FACE; |
141 | faces_sent[0] = NS_FACESENT_FACE; |
104 | |
142 | |
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143 | socket_ev.prio (PE_PRIO_NORMAL); |
105 | socket_ev.fd (fd); |
144 | socket_ev.fd (fd); |
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145 | socket_ev.poll (PE_R); |
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146 | |
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147 | cmd_ev.prio (PE_PRIO_NORMAL); |
106 | |
148 | |
107 | // initialisation done, kick it! |
149 | // initialisation done, kick it! |
108 | |
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109 | { |
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110 | packet sl; |
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111 | sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
150 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
112 | send_packet (sl); |
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113 | flush (); |
151 | flush (); |
114 | } |
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115 | |
152 | |
116 | #if 0//TODO |
153 | reset_stats (); |
117 | socket_info.nconns++; |
154 | |
118 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
155 | clients.insert (this); |
119 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
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120 | #endif |
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121 | } |
156 | } |
122 | |
157 | |
123 | client::~client () |
158 | client::~client () |
124 | { |
159 | { |
125 | status = Ns_Dead; |
160 | clients.erase (this); |
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161 | |
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162 | sfree<uint8> (faces_sent, nrofpixmaps); |
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163 | free (stats.range); |
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164 | free (stats.title); |
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165 | free (host); |
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166 | } |
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167 | |
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168 | void |
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169 | client::do_destroy () |
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170 | { |
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171 | attachable::do_destroy (); |
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172 | |
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173 | if (pl) |
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174 | pl->disconnect (); |
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175 | |
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176 | if (fd >= 0) |
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177 | { |
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178 | send_packet ("goodbye"); |
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179 | flush (); |
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180 | |
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181 | close (fd); |
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182 | } |
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183 | |
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184 | state = ST_DEAD; |
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185 | |
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186 | socket_ev.suspend (); |
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187 | cmd_ev.suspend (); |
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188 | |
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189 | refcnt_dec (); // socket no longer open |
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190 | } |
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191 | |
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192 | void |
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193 | client::reset_stats () |
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194 | { |
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195 | /* we need to clear these to -1 and not zero - otherwise, |
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196 | * if a player quits and starts a new character, we wont |
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197 | * send new values to the client, as things like exp start |
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198 | * at zero. |
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199 | */ |
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200 | for (int i = 0; i < NUM_SKILLS; i++) |
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201 | last_skill_exp[i] = -1; |
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202 | |
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203 | for (int i = 0; i < NROFATTACKS; i++) |
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204 | last_resist[i] = -1; |
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205 | |
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206 | last_weapon_sp = -1; |
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207 | last_level = -1; |
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208 | last_stats.exp = -1; |
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209 | last_weight = (uint32) - 1; |
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210 | last_flags = 0; |
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211 | last_weight = 0; |
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212 | last_weight_limit = 0; |
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213 | last_path_attuned = 0; |
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214 | last_path_repelled = 0; |
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215 | last_path_denied = 0; |
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216 | last_speed = 0; |
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217 | flags = 0; |
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218 | |
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219 | static living zero_living; |
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220 | last_stats = zero_living; |
126 | } |
221 | } |
127 | |
222 | |
128 | /** This sets up the socket and reads all the image information into memory. */ |
223 | /** This sets up the socket and reads all the image information into memory. */ |
129 | void |
224 | void |
130 | init_ericserver (void) |
225 | init_ericserver (void) |
131 | { |
226 | { |
132 | struct sockaddr_in insock; |
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133 | struct linger linger_opt; |
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134 | |
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135 | memset (&cst_tot, 0, sizeof (CS_Stats)); |
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136 | memset (&cst_lst, 0, sizeof (CS_Stats)); |
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137 | cst_tot.time_start = time (NULL); |
227 | cst_tot.time_start = time (NULL); |
138 | cst_lst.time_start = time (NULL); |
228 | cst_lst.time_start = time (NULL); |
139 | |
229 | |
140 | LOG (llevDebug, "Initialize new client/server data\n"); |
230 | LOG (llevDebug, "Initialize new client/server data\n"); |
141 | |
231 | |
… | |
… | |
155 | { |
245 | { |
156 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
246 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
157 | free_socket_images (); |
247 | free_socket_images (); |
158 | } |
248 | } |
159 | |
249 | |
160 | /** |
250 | client * |
161 | * Frees a socket. |
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162 | * Basically, all we need to do here is free all data structures that |
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163 | * might be associated with the socket. It is up to the caller to |
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164 | * update the list |
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165 | */ |
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166 | |
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167 | void |
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168 | free_newsocket (client *ns) |
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169 | { |
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170 | if (ns->fd >= 0) |
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171 | close (ns->fd); |
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172 | |
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173 | if (ns->stats.range) |
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174 | free (ns->stats.range); |
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175 | |
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176 | if (ns->stats.title) |
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177 | free (ns->stats.title); |
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178 | |
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179 | free (ns->host); |
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180 | |
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181 | ns->fd = -1; |
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182 | ns->stats.range = 0; |
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183 | ns->stats.title = 0; |
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184 | ns->host = 0; |
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185 | } |
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186 | |
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187 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
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188 | void |
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189 | final_free_player (player *pl) |
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190 | { |
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191 | pl->socket->send_packet ("goodbye"); |
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192 | free_newsocket (pl->socket); |
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193 | free_player (pl); |
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194 | } |
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195 | |
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196 | bool |
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197 | add_client (int fd, const char *peername) |
251 | client::create (int fd, const char *peername) |
198 | { |
252 | { |
199 | if (checkbanned (NULL, peername)) |
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200 | { |
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201 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
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202 | return false; |
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203 | } |
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204 | else |
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205 | { |
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206 | client *ns = new client (dup (fd), peername); |
253 | client *ns = new client (dup (fd), peername); |
207 | clients.push_back (ns); |
254 | ns->instantiate (); // effectively a nop right now |
208 | return true; |
255 | INVOKE_CLIENT (CONNECT, ns); |
209 | } |
256 | return ns; |
210 | } |
257 | } |
211 | |
258 | |