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29 | * |
29 | * |
30 | * Mainly deals with initialization and higher level socket |
30 | * Mainly deals with initialization and higher level socket |
31 | * maintenance (checking for lost connections and if data has arrived.) |
31 | * maintenance (checking for lost connections and if data has arrived.) |
32 | * The reading of data is handled in ericserver.c |
32 | * The reading of data is handled in ericserver.c |
33 | */ |
33 | */ |
34 | |
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35 | |
34 | |
36 | #include <global.h> |
35 | #include <global.h> |
37 | #include <sproto.h> |
36 | #include <sproto.h> |
38 | #include <sys/types.h> |
37 | #include <sys/types.h> |
39 | #include <sys/time.h> |
38 | #include <sys/time.h> |
40 | #include <sys/socket.h> |
39 | #include <sys/socket.h> |
41 | #include <netinet/in.h> |
40 | #include <netinet/in.h> |
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41 | #include <netinet/tcp.h> |
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42 | #include <netinet/ip.h> |
42 | #include <netdb.h> |
43 | #include <netdb.h> |
43 | |
44 | |
44 | #ifdef HAVE_UNISTD_H |
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45 | # include <unistd.h> |
45 | #include <unistd.h> |
46 | #endif |
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47 | |
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48 | #ifdef HAVE_ARPA_INET_H |
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49 | # include <arpa/inet.h> |
46 | #include <arpa/inet.h> |
50 | #endif |
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51 | #include <newserver.h> |
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52 | |
47 | |
53 | sockvec client_sockets; |
48 | sockvec clients; |
54 | |
49 | |
55 | /** |
50 | /** |
56 | * Initializes a connection. Really, it just sets up the data structure, |
51 | * Initializes a connection. Really, it just sets up the data structure, |
57 | * socket setup is handled elsewhere. We do send a version to the |
52 | * socket setup is handled elsewhere. We do send a version to the |
58 | * client. |
53 | * client. |
59 | */ |
54 | */ |
60 | client_socket::client_socket (int fd, const char *peername) |
55 | client::client (int fd, const char *peername) |
61 | : fd (fd), host (strdup (peername)), |
56 | : fd (fd), host (strdup (peername)), |
62 | socket_ev (this, &client_socket::socket_cb) |
57 | socket_ev (this, &client::socket_cb), |
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58 | cmd_ev (this, &client::cmd_cb), |
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59 | cc_inv (this), cc_other (this) |
63 | { |
60 | { |
64 | { |
61 | { |
65 | struct linger linger_opt; |
62 | struct linger linger_opt; |
66 | |
63 | |
67 | linger_opt.l_onoff = 0; |
64 | linger_opt.l_onoff = 0; |
68 | linger_opt.l_linger = 0; |
65 | linger_opt.l_linger = 0; |
69 | |
66 | |
70 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
67 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
71 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
68 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
72 | } |
69 | } |
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70 | |
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71 | { |
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72 | int val = IPTOS_LOWDELAY; |
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73 | |
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74 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
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75 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
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76 | } |
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77 | |
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78 | { |
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79 | int val = 1; |
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80 | |
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81 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
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82 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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83 | } |
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84 | |
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85 | #ifdef __linux__ |
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86 | { |
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87 | int val; |
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88 | |
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89 | // set some very aggressive keepalive parameters |
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90 | val = 10; |
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91 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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92 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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93 | |
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94 | val = 5; |
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95 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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96 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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97 | |
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98 | val = 1; |
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99 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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100 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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101 | } |
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102 | #endif |
73 | |
103 | |
74 | { |
104 | { |
75 | int bufsize = 65535; /*Supposed absolute upper limit */ |
105 | int bufsize = 65535; /*Supposed absolute upper limit */ |
76 | int oldbufsize; |
106 | int oldbufsize; |
77 | int buflen = sizeof (int); |
107 | int buflen = sizeof (int); |
… | |
… | |
88 | |
118 | |
89 | buflen = sizeof (oldbufsize); |
119 | buflen = sizeof (oldbufsize); |
90 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
120 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
91 | } |
121 | } |
92 | |
122 | |
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123 | state = ST_SETUP; |
93 | mapmode = Map0Cmd; |
124 | mapmode = Map0Cmd; |
94 | darkness = 1; |
125 | darkness = 1; |
95 | status = Ns_Add; |
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96 | mapx = 11; |
126 | mapx = 11; |
97 | mapy = 11; |
127 | mapy = 11; |
98 | itemcmd = 1; /* Default is version item1 command */ |
128 | itemcmd = 1; /* Default is version item1 command */ |
99 | |
129 | |
100 | faces_sent_len = nrofpixmaps; |
130 | faces_sent = salloc0<uint8> (nrofpixmaps); |
101 | faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
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102 | if (!faces_sent) |
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103 | fatal (OUT_OF_MEMORY); |
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104 | |
131 | |
105 | /* Do this so we don't send a face command for the client for |
132 | /* Do this so we don't send a face command for the client for |
106 | * this face. Face 0 is sent to the client to say clear |
133 | * this face. Face 0 is sent to the client to say clear |
107 | * face information. |
134 | * face information. |
108 | */ |
135 | */ |
109 | faces_sent[0] = NS_FACESENT_FACE; |
136 | faces_sent[0] = NS_FACESENT_FACE; |
110 | |
137 | |
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138 | // socket I/O is low priority |
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139 | // we prefer to have the server run instead of handling client requests |
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140 | socket_ev.prio (PE_PRIO_NORMAL + 1); |
111 | socket_ev.fd (fd); |
141 | socket_ev.fd (fd); |
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142 | socket_ev.poll (PE_R); |
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143 | |
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144 | // command handling is even lower priority |
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145 | // that way no client can monopolise the server |
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146 | cmd_ev.prio (PE_PRIO_NORMAL + 2); |
112 | |
147 | |
113 | // initialisation done, kick it! |
148 | // initialisation done, kick it! |
114 | |
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115 | { |
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116 | packet sl; |
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117 | sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
149 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
118 | send_packet (sl); |
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119 | flush (); |
150 | flush (); |
120 | } |
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121 | |
151 | |
122 | #if 0//TODO |
152 | #if 0//TODO |
123 | socket_info.nconns++; |
153 | socket_info.nconns++; |
124 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
154 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
125 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
155 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
126 | #endif |
156 | #endif |
127 | } |
157 | } |
128 | |
158 | |
129 | client_socket::~client_socket () |
159 | client::~client () |
130 | { |
160 | { |
131 | status = Ns_Dead; |
161 | if (pl) |
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162 | pl->ns = 0; |
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163 | |
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164 | if (fd >= 0) |
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165 | close (fd); |
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166 | |
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167 | sfree<uint8> (faces_sent, nrofpixmaps); |
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168 | free (stats.range); |
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169 | free (stats.title); |
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170 | free (host); |
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171 | } |
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172 | |
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173 | void |
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174 | client::destroy () |
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175 | { |
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176 | INVOKE_CLIENT (DESTROY, this); |
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177 | |
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178 | state = ST_DEAD; |
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179 | |
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180 | socket_ev.suspend (); |
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181 | cmd_ev.suspend (); |
132 | } |
182 | } |
133 | |
183 | |
134 | /** This sets up the socket and reads all the image information into memory. */ |
184 | /** This sets up the socket and reads all the image information into memory. */ |
135 | void |
185 | void |
136 | init_ericserver (void) |
186 | init_ericserver (void) |
137 | { |
187 | { |
138 | struct sockaddr_in insock; |
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139 | struct linger linger_opt; |
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140 | |
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141 | memset (&cst_tot, 0, sizeof (CS_Stats)); |
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142 | memset (&cst_lst, 0, sizeof (CS_Stats)); |
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143 | cst_tot.time_start = time (NULL); |
188 | cst_tot.time_start = time (NULL); |
144 | cst_lst.time_start = time (NULL); |
189 | cst_lst.time_start = time (NULL); |
145 | |
190 | |
146 | LOG (llevDebug, "Initialize new client/server data\n"); |
191 | LOG (llevDebug, "Initialize new client/server data\n"); |
147 | |
192 | |
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… | |
161 | { |
206 | { |
162 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
207 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
163 | free_socket_images (); |
208 | free_socket_images (); |
164 | } |
209 | } |
165 | |
210 | |
166 | /** |
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167 | * Frees a socket. |
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168 | * Basically, all we need to do here is free all data structures that |
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169 | * might be associated with the socket. It is up to the caller to |
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170 | * update the list |
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171 | */ |
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172 | |
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173 | void |
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174 | free_newsocket (client_socket *ns) |
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175 | { |
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176 | if (ns->fd >= 0) |
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177 | close (ns->fd); |
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178 | |
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179 | if (ns->stats.range) |
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180 | free (ns->stats.range); |
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181 | |
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182 | if (ns->stats.title) |
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183 | free (ns->stats.title); |
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184 | |
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185 | free (ns->host); |
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186 | |
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187 | ns->fd = -1; |
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188 | ns->stats.range = 0; |
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189 | ns->stats.title = 0; |
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190 | ns->host = 0; |
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191 | } |
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192 | |
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193 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
211 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
194 | void |
212 | void |
195 | final_free_player (player *pl) |
213 | final_free_player (player *pl) |
196 | { |
214 | { |
197 | pl->socket->send_packet ("goodbye"); |
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198 | free_newsocket (pl->socket); |
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199 | free_player (pl); |
215 | free_player (pl); |
200 | } |
216 | } |
201 | |
217 | |
202 | bool |
218 | client * |
203 | add_client_socket (int fd, const char *peername) |
219 | client::create (int fd, const char *peername) |
204 | { |
220 | { |
205 | if (checkbanned (NULL, peername)) |
221 | if (checkbanned (NULL, peername)) |
206 | { |
222 | { |
207 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
223 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
208 | return false; |
224 | return 0; |
209 | } |
225 | } |
210 | else |
226 | else |
211 | { |
227 | { |
212 | client_socket *ns = new client_socket (dup (fd), peername); |
228 | client *ns = new client (dup (fd), peername); |
213 | client_sockets.push_back (ns); |
229 | clients.push_back (ns); |
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230 | |
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231 | ns->instantiate (); // effectively a nop right now |
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232 | |
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233 | INVOKE_CLIENT (CONNECT, ns); |
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234 | |
214 | return true; |
235 | return ns; |
215 | } |
236 | } |
216 | } |
237 | } |
217 | |
238 | |