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 |
… | |
… | |
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> |
46 | #include <newserver.h> |
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47 | |
48 | |
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49 | #include <algorithm> |
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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), |
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61 | cmd_ev (this, &client::cmd_cb), |
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62 | cc_inv (this), cc_other (this) |
58 | { |
63 | { |
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64 | refcnt_inc (); // the socket is an external reference |
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65 | |
59 | { |
66 | { |
60 | struct linger linger_opt; |
67 | struct linger linger_opt; |
61 | |
68 | |
62 | linger_opt.l_onoff = 0; |
69 | linger_opt.l_onoff = 0; |
63 | linger_opt.l_linger = 0; |
70 | linger_opt.l_linger = 0; |
64 | |
71 | |
65 | 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))) |
66 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
73 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
67 | } |
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 |
68 | |
108 | |
69 | { |
109 | { |
70 | int bufsize = 65535; /*Supposed absolute upper limit */ |
110 | int bufsize = 65535; /*Supposed absolute upper limit */ |
71 | int oldbufsize; |
111 | int oldbufsize; |
72 | int buflen = sizeof (int); |
112 | int buflen = sizeof (int); |
… | |
… | |
83 | |
123 | |
84 | buflen = sizeof (oldbufsize); |
124 | buflen = sizeof (oldbufsize); |
85 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
125 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
86 | } |
126 | } |
87 | |
127 | |
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128 | state = ST_SETUP; |
88 | mapmode = Map0Cmd; |
129 | mapmode = Map0Cmd; |
89 | darkness = 1; |
130 | darkness = 1; |
90 | status = Ns_Add; |
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91 | mapx = 11; |
131 | mapx = 11; |
92 | mapy = 11; |
132 | mapy = 11; |
93 | itemcmd = 1; /* Default is version item1 command */ |
133 | itemcmd = 1; /* Default is version item1 command */ |
94 | |
134 | |
95 | faces_sent_len = nrofpixmaps; |
135 | faces_sent = salloc0<uint8> (nrofpixmaps); |
96 | faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
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97 | if (!faces_sent) |
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98 | fatal (OUT_OF_MEMORY); |
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99 | |
136 | |
100 | /* 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 |
101 | * 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 |
102 | * face information. |
139 | * face information. |
103 | */ |
140 | */ |
104 | faces_sent[0] = NS_FACESENT_FACE; |
141 | faces_sent[0] = NS_FACESENT_FACE; |
105 | |
142 | |
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143 | // socket I/O is low priority |
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144 | // we prefer to have the server run instead of handling client requests |
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145 | socket_ev.prio (PE_PRIO_NORMAL + 1); |
106 | socket_ev.fd (fd); |
146 | socket_ev.fd (fd); |
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147 | socket_ev.poll (PE_R); |
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148 | |
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149 | // command handling is even lower priority |
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150 | // that way no client can monopolise the server |
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151 | cmd_ev.prio (PE_PRIO_NORMAL + 2); |
107 | |
152 | |
108 | // initialisation done, kick it! |
153 | // initialisation done, kick it! |
109 | |
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110 | { |
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111 | packet sl; |
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112 | sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
154 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
113 | send_packet (sl); |
155 | flush (); |
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156 | |
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157 | reset_stats (); |
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158 | |
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159 | clients.insert (this); |
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160 | } |
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161 | |
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162 | client::~client () |
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163 | { |
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164 | clients.erase (this); |
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165 | |
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166 | sfree<uint8> (faces_sent, nrofpixmaps); |
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167 | free (stats.range); |
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168 | free (stats.title); |
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169 | free (host); |
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170 | } |
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171 | |
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172 | void |
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173 | client::do_destroy () |
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174 | { |
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175 | attachable::do_destroy (); |
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176 | |
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177 | if (pl) |
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178 | pl->disconnect (); |
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179 | |
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180 | if (fd >= 0) |
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181 | { |
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182 | send_packet ("goodbye"); |
114 | flush (); |
183 | flush (); |
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184 | |
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185 | close (fd); |
115 | } |
186 | } |
116 | |
187 | |
117 | #if 0//TODO |
188 | state = ST_DEAD; |
118 | socket_info.nconns++; |
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119 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
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120 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
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121 | #endif |
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122 | } |
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123 | |
189 | |
124 | client_socket::~client_socket () |
190 | socket_ev.suspend (); |
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191 | cmd_ev.suspend (); |
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192 | |
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193 | refcnt_dec (); // socket no longer open |
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194 | } |
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195 | |
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196 | void |
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197 | client::reset_stats () |
125 | { |
198 | { |
126 | status = Ns_Dead; |
199 | /* we need to clear these to -1 and not zero - otherwise, |
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200 | * if a player quits and starts a new character, we wont |
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201 | * send new values to the client, as things like exp start |
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202 | * at zero. |
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203 | */ |
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204 | for (int i = 0; i < NUM_SKILLS; i++) |
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205 | last_skill_exp[i] = -1; |
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206 | |
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207 | for (int i = 0; i < NROFATTACKS; i++) |
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208 | last_resist[i] = -1; |
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209 | |
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210 | last_weapon_sp = -1; |
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211 | last_level = -1; |
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212 | last_stats.exp = -1; |
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213 | last_weight = (uint32) - 1; |
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214 | last_flags = 0; |
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215 | last_weight = 0; |
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216 | last_weight_limit = 0; |
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217 | last_path_attuned = 0; |
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218 | last_path_repelled = 0; |
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219 | last_path_denied = 0; |
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220 | last_speed = 0; |
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221 | flags = 0; |
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222 | |
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223 | static living zero_living; |
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224 | last_stats = zero_living; |
127 | } |
225 | } |
128 | |
226 | |
129 | /** This sets up the socket and reads all the image information into memory. */ |
227 | /** This sets up the socket and reads all the image information into memory. */ |
130 | void |
228 | void |
131 | init_ericserver (void) |
229 | init_ericserver (void) |
132 | { |
230 | { |
133 | struct sockaddr_in insock; |
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134 | struct linger linger_opt; |
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135 | |
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136 | memset (&cst_tot, 0, sizeof (CS_Stats)); |
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137 | memset (&cst_lst, 0, sizeof (CS_Stats)); |
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138 | cst_tot.time_start = time (NULL); |
231 | cst_tot.time_start = time (NULL); |
139 | cst_lst.time_start = time (NULL); |
232 | cst_lst.time_start = time (NULL); |
140 | |
233 | |
141 | LOG (llevDebug, "Initialize new client/server data\n"); |
234 | LOG (llevDebug, "Initialize new client/server data\n"); |
142 | |
235 | |
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156 | { |
249 | { |
157 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
250 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
158 | free_socket_images (); |
251 | free_socket_images (); |
159 | } |
252 | } |
160 | |
253 | |
161 | /** |
254 | client * |
162 | * Frees a socket. |
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163 | * Basically, all we need to do here is free all data structures that |
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164 | * might be associated with the socket. It is up to the caller to |
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165 | * update the list |
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166 | */ |
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167 | |
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168 | void |
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169 | free_newsocket (client_socket *ns) |
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170 | { |
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171 | if (ns->fd >= 0) |
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172 | close (ns->fd); |
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173 | |
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174 | if (ns->stats.range) |
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175 | free (ns->stats.range); |
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176 | |
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177 | if (ns->stats.title) |
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178 | free (ns->stats.title); |
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179 | |
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180 | free (ns->host); |
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181 | |
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182 | ns->fd = -1; |
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183 | ns->stats.range = 0; |
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184 | ns->stats.title = 0; |
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185 | ns->host = 0; |
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186 | } |
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187 | |
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188 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
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189 | void |
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190 | final_free_player (player *pl) |
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191 | { |
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192 | pl->socket->send_packet ("goodbye"); |
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193 | free_newsocket (pl->socket); |
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194 | free_player (pl); |
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195 | } |
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196 | |
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197 | bool |
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198 | add_client_socket (int fd, const char *peername) |
255 | client::create (int fd, const char *peername) |
199 | { |
256 | { |
200 | if (checkbanned (NULL, peername)) |
257 | if (checkbanned (NULL, peername)) |
201 | { |
258 | { |
202 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
259 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
203 | return false; |
260 | return 0; |
204 | } |
261 | } |
205 | else |
262 | else |
206 | { |
263 | { |
207 | client_socket *ns = new client_socket (dup (fd), peername); |
264 | client *ns = new client (dup (fd), peername); |
208 | client_sockets.push_back (ns); |
265 | |
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266 | ns->instantiate (); // effectively a nop right now |
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267 | |
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268 | INVOKE_CLIENT (CONNECT, ns); |
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269 | |
209 | return true; |
270 | return ns; |
210 | } |
271 | } |
211 | } |
272 | } |
212 | |
273 | |