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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> |
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47 | |
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48 | #include <algorithm> |
46 | |
49 | |
47 | sockvec clients; |
50 | sockvec clients; |
48 | |
51 | |
49 | /** |
52 | /** |
50 | * Initializes a connection. Really, it just sets up the data structure, |
53 | * Initializes a connection. Really, it just sets up the data structure, |
51 | * socket setup is handled elsewhere. We do send a version to the |
54 | * socket setup is handled elsewhere. We do send a version to the |
52 | * client. |
55 | * client. |
53 | */ |
56 | */ |
54 | client::client (int fd, const char *peername) |
57 | client::client (int fd, const char *peername) |
55 | : fd (fd), host (strdup (peername)), |
58 | : fd (fd), host (strdup (peername)), |
56 | socket_ev (this, &client::socket_cb) |
59 | socket_ev (this, &client::socket_cb), |
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60 | cmd_ev (this, &client::cmd_cb), |
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61 | cc_inv (this), cc_other (this) |
57 | { |
62 | { |
58 | { |
63 | { |
59 | struct linger linger_opt; |
64 | struct linger linger_opt; |
60 | |
65 | |
61 | linger_opt.l_onoff = 0; |
66 | linger_opt.l_onoff = 0; |
62 | linger_opt.l_linger = 0; |
67 | linger_opt.l_linger = 0; |
63 | |
68 | |
64 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
69 | if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) |
65 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
70 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
66 | } |
71 | } |
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72 | |
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73 | { |
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74 | int val = IPTOS_LOWDELAY; |
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75 | |
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76 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
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77 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
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78 | } |
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79 | |
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80 | { |
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81 | int val = 1; |
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82 | |
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83 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
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84 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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85 | } |
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86 | |
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87 | #ifdef __linux__ |
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88 | { |
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89 | int val; |
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90 | |
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91 | // set some very aggressive keepalive parameters |
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92 | val = 10; |
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93 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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94 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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95 | |
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96 | val = 5; |
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97 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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98 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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99 | |
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100 | val = 1; |
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101 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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102 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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103 | } |
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104 | #endif |
67 | |
105 | |
68 | { |
106 | { |
69 | int bufsize = 65535; /*Supposed absolute upper limit */ |
107 | int bufsize = 65535; /*Supposed absolute upper limit */ |
70 | int oldbufsize; |
108 | int oldbufsize; |
71 | int buflen = sizeof (int); |
109 | int buflen = sizeof (int); |
… | |
… | |
82 | |
120 | |
83 | buflen = sizeof (oldbufsize); |
121 | buflen = sizeof (oldbufsize); |
84 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
122 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
85 | } |
123 | } |
86 | |
124 | |
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125 | state = ST_SETUP; |
87 | mapmode = Map0Cmd; |
126 | mapmode = Map0Cmd; |
88 | darkness = 1; |
127 | darkness = 1; |
89 | status = Ns_Add; |
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90 | mapx = 11; |
128 | mapx = 11; |
91 | mapy = 11; |
129 | mapy = 11; |
92 | itemcmd = 1; /* Default is version item1 command */ |
130 | itemcmd = 1; /* Default is version item1 command */ |
93 | |
131 | |
94 | faces_sent_len = nrofpixmaps; |
132 | 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 | |
133 | |
99 | /* Do this so we don't send a face command for the client for |
134 | /* 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 |
135 | * this face. Face 0 is sent to the client to say clear |
101 | * face information. |
136 | * face information. |
102 | */ |
137 | */ |
103 | faces_sent[0] = NS_FACESENT_FACE; |
138 | faces_sent[0] = NS_FACESENT_FACE; |
104 | |
139 | |
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140 | // socket I/O is low priority |
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141 | // we prefer to have the server run instead of handling client requests |
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142 | socket_ev.prio (PE_PRIO_NORMAL + 1); |
105 | socket_ev.fd (fd); |
143 | socket_ev.fd (fd); |
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144 | socket_ev.poll (PE_R); |
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145 | |
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146 | // command handling is even lower priority |
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147 | // that way no client can monopolise the server |
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148 | cmd_ev.prio (PE_PRIO_NORMAL + 2); |
106 | |
149 | |
107 | // initialisation done, kick it! |
150 | // 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); |
151 | send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); |
112 | send_packet (sl); |
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113 | flush (); |
152 | flush (); |
114 | } |
153 | |
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154 | // clients are externally referenced by the socket |
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155 | refcnt_inc (); |
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156 | clients.push_back (this); |
115 | |
157 | |
116 | #if 0//TODO |
158 | #if 0//TODO |
117 | socket_info.nconns++; |
159 | socket_info.nconns++; |
118 | if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; |
160 | 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; |
161 | if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns; |
120 | #endif |
162 | #endif |
121 | } |
163 | } |
122 | |
164 | |
123 | client::~client () |
165 | client::~client () |
124 | { |
166 | { |
125 | status = Ns_Dead; |
167 | sockvec::iterator i = find (clients.begin (), clients.end (), this); |
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168 | if (i != clients.end ()) |
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169 | clients.erase (i); |
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170 | |
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171 | sfree<uint8> (faces_sent, nrofpixmaps); |
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172 | free (stats.range); |
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173 | free (stats.title); |
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174 | free (host); |
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175 | } |
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176 | |
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177 | void |
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178 | client::do_destroy () |
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179 | { |
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180 | attachable::do_destroy (); |
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181 | |
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182 | if (pl) |
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183 | pl->disconnect (); |
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184 | |
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185 | if (fd >= 0) |
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186 | close (fd); |
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187 | |
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188 | state = ST_DEAD; |
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189 | |
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190 | socket_ev.suspend (); |
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191 | cmd_ev.suspend (); |
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192 | |
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193 | // socket now longer references us |
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194 | refcnt_dec (); |
126 | } |
195 | } |
127 | |
196 | |
128 | /** This sets up the socket and reads all the image information into memory. */ |
197 | /** This sets up the socket and reads all the image information into memory. */ |
129 | void |
198 | void |
130 | init_ericserver (void) |
199 | init_ericserver (void) |
131 | { |
200 | { |
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); |
201 | cst_tot.time_start = time (NULL); |
138 | cst_lst.time_start = time (NULL); |
202 | cst_lst.time_start = time (NULL); |
139 | |
203 | |
140 | LOG (llevDebug, "Initialize new client/server data\n"); |
204 | LOG (llevDebug, "Initialize new client/server data\n"); |
141 | |
205 | |
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… | |
155 | { |
219 | { |
156 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
220 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
157 | free_socket_images (); |
221 | free_socket_images (); |
158 | } |
222 | } |
159 | |
223 | |
160 | /** |
224 | 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) |
225 | client::create (int fd, const char *peername) |
198 | { |
226 | { |
199 | if (checkbanned (NULL, peername)) |
227 | if (checkbanned (NULL, peername)) |
200 | { |
228 | { |
201 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
229 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
202 | return false; |
230 | return 0; |
203 | } |
231 | } |
204 | else |
232 | else |
205 | { |
233 | { |
206 | client *ns = new client (dup (fd), peername); |
234 | client *ns = new client (dup (fd), peername); |
207 | clients.push_back (ns); |
235 | |
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236 | ns->instantiate (); // effectively a nop right now |
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237 | |
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238 | INVOKE_CLIENT (CONNECT, ns); |
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239 | |
208 | return true; |
240 | return ns; |
209 | } |
241 | } |
210 | } |
242 | } |
211 | |
243 | |