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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 | #include <unistd.h> |
45 | #include <unistd.h> |
45 | #include <arpa/inet.h> |
46 | #include <arpa/inet.h> |
46 | |
47 | |
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51 | * 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 |
52 | * client. |
53 | * client. |
53 | */ |
54 | */ |
54 | client::client (int fd, const char *peername) |
55 | client::client (int fd, const char *peername) |
55 | : fd (fd), host (strdup (peername)), |
56 | : fd (fd), host (strdup (peername)), |
56 | socket_ev (this, &client::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) |
57 | { |
60 | { |
58 | { |
61 | { |
59 | struct linger linger_opt; |
62 | struct linger linger_opt; |
60 | |
63 | |
61 | linger_opt.l_onoff = 0; |
64 | linger_opt.l_onoff = 0; |
62 | linger_opt.l_linger = 0; |
65 | linger_opt.l_linger = 0; |
63 | |
66 | |
64 | 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))) |
65 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
68 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
66 | } |
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 |
67 | |
103 | |
68 | { |
104 | { |
69 | int bufsize = 65535; /*Supposed absolute upper limit */ |
105 | int bufsize = 65535; /*Supposed absolute upper limit */ |
70 | int oldbufsize; |
106 | int oldbufsize; |
71 | int buflen = sizeof (int); |
107 | int buflen = sizeof (int); |
… | |
… | |
84 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
120 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
85 | } |
121 | } |
86 | |
122 | |
87 | mapmode = Map0Cmd; |
123 | mapmode = Map0Cmd; |
88 | darkness = 1; |
124 | darkness = 1; |
89 | status = Ns_Add; |
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90 | mapx = 11; |
125 | mapx = 11; |
91 | mapy = 11; |
126 | mapy = 11; |
92 | itemcmd = 1; /* Default is version item1 command */ |
127 | itemcmd = 1; /* Default is version item1 command */ |
93 | |
128 | |
94 | faces_sent_len = nrofpixmaps; |
129 | 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 | |
130 | |
99 | /* Do this so we don't send a face command for the client for |
131 | /* 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 |
132 | * this face. Face 0 is sent to the client to say clear |
101 | * face information. |
133 | * face information. |
102 | */ |
134 | */ |
103 | faces_sent[0] = NS_FACESENT_FACE; |
135 | faces_sent[0] = NS_FACESENT_FACE; |
104 | |
136 | |
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137 | // socket I/O is low priority |
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138 | // we prefer to have the server run instead of handling client requests |
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139 | socket_ev.prio (PE_PRIO_NORMAL + 1); |
105 | socket_ev.fd (fd); |
140 | socket_ev.fd (fd); |
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141 | socket_ev.poll (PE_R); |
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142 | |
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143 | // command handling is even lower priority |
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144 | // that way no client can monopolise the server |
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145 | cmd_ev.prio (PE_PRIO_NORMAL + 2); |
106 | |
146 | |
107 | // initialisation done, kick it! |
147 | // 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); |
148 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
112 | send_packet (sl); |
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113 | flush (); |
149 | flush (); |
114 | } |
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115 | |
150 | |
116 | #if 0//TODO |
151 | #if 0//TODO |
117 | socket_info.nconns++; |
152 | socket_info.nconns++; |
118 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
153 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
119 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
154 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
120 | #endif |
155 | #endif |
121 | } |
156 | } |
122 | |
157 | |
123 | client::~client () |
158 | client::~client () |
124 | { |
159 | { |
125 | status = Ns_Dead; |
160 | if (pl) |
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161 | pl->socket = 0; |
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162 | |
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163 | if (fd >= 0) |
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164 | close (fd); |
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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::destroy () |
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174 | { |
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175 | destroyed = true; |
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176 | |
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177 | socket_ev.suspend (); |
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178 | cmd_ev.suspend (); |
126 | } |
179 | } |
127 | |
180 | |
128 | /** This sets up the socket and reads all the image information into memory. */ |
181 | /** This sets up the socket and reads all the image information into memory. */ |
129 | void |
182 | void |
130 | init_ericserver (void) |
183 | init_ericserver (void) |
131 | { |
184 | { |
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); |
185 | cst_tot.time_start = time (NULL); |
138 | cst_lst.time_start = time (NULL); |
186 | cst_lst.time_start = time (NULL); |
139 | |
187 | |
140 | LOG (llevDebug, "Initialize new client/server data\n"); |
188 | LOG (llevDebug, "Initialize new client/server data\n"); |
141 | |
189 | |
… | |
… | |
155 | { |
203 | { |
156 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
204 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
157 | free_socket_images (); |
205 | free_socket_images (); |
158 | } |
206 | } |
159 | |
207 | |
160 | /** |
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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. */ |
208 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
188 | void |
209 | void |
189 | final_free_player (player *pl) |
210 | final_free_player (player *pl) |
190 | { |
211 | { |
191 | pl->socket->send_packet ("goodbye"); |
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192 | free_newsocket (pl->socket); |
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193 | free_player (pl); |
212 | free_player (pl); |
194 | } |
213 | } |
195 | |
214 | |
196 | bool |
215 | client * |
197 | add_client (int fd, const char *peername) |
216 | client::create (int fd, const char *peername) |
198 | { |
217 | { |
199 | if (checkbanned (NULL, peername)) |
218 | if (checkbanned (NULL, peername)) |
200 | { |
219 | { |
201 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
220 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
202 | return false; |
221 | return 0; |
203 | } |
222 | } |
204 | else |
223 | else |
205 | { |
224 | { |
206 | client *ns = new client (dup (fd), peername); |
225 | client *ns = new client (dup (fd), peername); |
207 | clients.push_back (ns); |
226 | clients.push_back (ns); |
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227 | |
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228 | ns->instantiate (); // effectively a nop right now |
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229 | |
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230 | INVOKE_CLIENT (CONNECT, ns); |
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231 | |
208 | return true; |
232 | return ns; |
209 | } |
233 | } |
210 | } |
234 | } |
211 | |
235 | |