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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 | |
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48 | #include <algorithm> |
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49 | |
53 | sockvec client_sockets; |
50 | sockvec clients; |
54 | |
51 | |
55 | /** |
52 | /** |
56 | * Initializes a connection. Really, it just sets up the data structure, |
53 | * Initializes a connection. Really, it just sets up the data structure, |
57 | * 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 |
58 | * client. |
55 | * client. |
59 | */ |
56 | */ |
60 | client_socket::client_socket (int fd, const char *peername) |
57 | client::client (int fd, const char *peername) |
61 | : fd (fd), host (strdup (peername)) |
58 | : fd (fd), host (strdup (peername)), |
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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) |
62 | { |
62 | { |
63 | { |
63 | { |
64 | struct linger linger_opt; |
64 | struct linger linger_opt; |
65 | |
65 | |
66 | linger_opt.l_onoff = 0; |
66 | linger_opt.l_onoff = 0; |
67 | linger_opt.l_linger = 0; |
67 | linger_opt.l_linger = 0; |
68 | |
68 | |
69 | 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))) |
70 | LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); |
70 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
71 | } |
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 |
72 | |
105 | |
73 | { |
106 | { |
74 | int bufsize = 65535; /*Supposed absolute upper limit */ |
107 | int bufsize = 65535; /*Supposed absolute upper limit */ |
75 | int oldbufsize; |
108 | int oldbufsize; |
76 | int buflen = sizeof (int); |
109 | int buflen = sizeof (int); |
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… | |
87 | |
120 | |
88 | buflen = sizeof (oldbufsize); |
121 | buflen = sizeof (oldbufsize); |
89 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
122 | getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); |
90 | } |
123 | } |
91 | |
124 | |
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125 | state = ST_SETUP; |
92 | mapmode = Map0Cmd; |
126 | mapmode = Map0Cmd; |
93 | darkness = 1; |
127 | darkness = 1; |
94 | status = Ns_Add; |
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95 | mapx = 11; |
128 | mapx = 11; |
96 | mapy = 11; |
129 | mapy = 11; |
97 | itemcmd = 1; /* Default is version item1 command */ |
130 | itemcmd = 1; /* Default is version item1 command */ |
98 | |
131 | |
99 | faces_sent_len = nrofpixmaps; |
132 | faces_sent = salloc0<uint8> (nrofpixmaps); |
100 | faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent)); |
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101 | if (!faces_sent) |
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102 | fatal (OUT_OF_MEMORY); |
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103 | |
133 | |
104 | /* 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 |
105 | * 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 |
106 | * face information. |
136 | * face information. |
107 | */ |
137 | */ |
108 | faces_sent[0] = NS_FACESENT_FACE; |
138 | faces_sent[0] = NS_FACESENT_FACE; |
109 | |
139 | |
110 | can_write = 1; |
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); |
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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); |
111 | |
149 | |
112 | // initialisation done, kick it! |
150 | // initialisation done, kick it! |
113 | |
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114 | { |
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115 | packet sl; |
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116 | 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); |
117 | send_packet (sl); |
152 | flush (); |
118 | } |
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); |
119 | |
157 | |
120 | #if 0//TODO |
158 | #if 0//TODO |
121 | socket_info.nconns++; |
159 | socket_info.nconns++; |
122 | 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; |
123 | 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; |
124 | #endif |
162 | #endif |
125 | } |
163 | } |
126 | |
164 | |
127 | client_socket::~client_socket () |
165 | client::~client () |
128 | { |
166 | { |
129 | 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 (); |
130 | } |
195 | } |
131 | |
196 | |
132 | /** 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. */ |
133 | void |
198 | void |
134 | init_ericserver (void) |
199 | init_ericserver (void) |
135 | { |
200 | { |
136 | struct sockaddr_in insock; |
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137 | struct linger linger_opt; |
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138 | |
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139 | memset (&cst_tot, 0, sizeof (CS_Stats)); |
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140 | memset (&cst_lst, 0, sizeof (CS_Stats)); |
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141 | cst_tot.time_start = time (NULL); |
201 | cst_tot.time_start = time (NULL); |
142 | cst_lst.time_start = time (NULL); |
202 | cst_lst.time_start = time (NULL); |
143 | |
203 | |
144 | LOG (llevDebug, "Initialize new client/server data\n"); |
204 | LOG (llevDebug, "Initialize new client/server data\n"); |
145 | |
205 | |
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159 | { |
219 | { |
160 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
220 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
161 | free_socket_images (); |
221 | free_socket_images (); |
162 | } |
222 | } |
163 | |
223 | |
164 | /** |
224 | client * |
165 | * Frees a socket. |
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166 | * Basically, all we need to do here is free all data structures that |
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167 | * might be associated with the socket. It is up to the caller to |
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168 | * update the list |
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169 | */ |
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170 | |
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171 | void |
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172 | free_newsocket (client_socket *ns) |
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173 | { |
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174 | if (ns->fd >= 0) |
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175 | close (ns->fd); |
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176 | |
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177 | if (ns->stats.range) |
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178 | free (ns->stats.range); |
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179 | |
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180 | if (ns->stats.title) |
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181 | free (ns->stats.title); |
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182 | |
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183 | free (ns->host); |
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184 | |
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185 | ns->fd = -1; |
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186 | ns->stats.range = 0; |
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187 | ns->stats.title = 0; |
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188 | ns->host = 0; |
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189 | } |
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190 | |
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191 | /** Sends the 'goodbye' command to the player, and closes connection. */ |
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192 | void |
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193 | final_free_player (player *pl) |
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194 | { |
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195 | pl->socket->send_packet ("goodbye"); |
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196 | free_newsocket (pl->socket); |
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197 | free_player (pl); |
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198 | } |
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199 | |
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200 | bool |
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201 | add_client_socket (int fd, const char *peername) |
225 | client::create (int fd, const char *peername) |
202 | { |
226 | { |
203 | if (checkbanned (NULL, peername)) |
227 | if (checkbanned (NULL, peername)) |
204 | { |
228 | { |
205 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
229 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername); |
206 | return false; |
230 | return 0; |
207 | } |
231 | } |
208 | else |
232 | else |
209 | { |
233 | { |
210 | client_socket *ns = new client_socket (dup (fd), peername); |
234 | client *ns = new client (dup (fd), peername); |
211 | client_sockets.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 | |
212 | return true; |
240 | return ns; |
213 | } |
241 | } |
214 | } |
242 | } |
215 | |
243 | |