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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.12 by root, Thu Dec 14 00:01:35 2006 UTC vs.
Revision 1.35 by root, Mon Jan 8 18:18:36 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 CrossFire, A Multiplayer game for X-windows
3 3
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
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>
42#include <netinet/tcp.h>
43#include <netinet/ip.h>
42#include <netdb.h> 44#include <netdb.h>
43 45
44#ifdef HAVE_UNISTD_H
45# include <unistd.h> 46#include <unistd.h>
46#endif
47
48#ifdef HAVE_ARPA_INET_H
49# include <arpa/inet.h> 47#include <arpa/inet.h>
50#endif
51#include <newserver.h>
52 48
53Socket_Info socket_info; 49#include <algorithm>
54NewSocket *init_sockets; 50
51sockvec clients;
55 52
56/** 53/**
57 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
58 * 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
59 * client. 56 * client.
60 */ 57 */
61void 58client::client (int fd, const char *peername)
62InitConnection (NewSocket *ns, const char *from_ip) 59: fd (fd), host (strdup (peername)),
60 socket_ev (this, &client::socket_cb),
61 cmd_ev (this, &client::cmd_cb),
62 cc_inv (this), cc_other (this)
63{ 63{
64 SockList sl; 64 refcnt_inc (); // the socket is an external reference
65 char buf[256];
66 int bufsize = 65535; /*Supposed absolute upper limit */
67 int oldbufsize;
68 int buflen = sizeof (int);
69 65
70 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 66 {
71 LOG (llevError, "InitConnection: Error on fcntl.\n"); 67 struct linger linger_opt;
72 68
73 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 69 linger_opt.l_onoff = 0;
74 oldbufsize = 0; 70 linger_opt.l_linger = 0;
75 71
76 if (oldbufsize < bufsize) 72 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
77 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 73 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
78 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 74 }
79 75
80 buflen = sizeof (oldbufsize); 76 {
81 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 77 int val = IPTOS_LOWDELAY;
82#ifdef ESRV_DEBUG 78
83 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize); 79 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
80 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
81 }
82
83 {
84 int val = 1;
85
86 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
87 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
88 }
89
90#ifdef __linux__
91 {
92 int val;
93
94 // set some very aggressive keepalive parameters
95 val = 10;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
98
99 val = 5;
100 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
101 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
102
103 val = 1;
104 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
105 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
106 }
84#endif 107#endif
85 108
86 ns->faceset = 0; 109 {
87 ns->facecache = 0; 110 int bufsize = 65535; /*Supposed absolute upper limit */
88 ns->image2 = 0; 111 int oldbufsize;
89 ns->sound = 0; 112 int buflen = sizeof (int);
90 ns->exp64 = 0; 113
91 ns->monitor_spells = 0; 114 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
115 LOG (llevError, "InitConnection: Error on fcntl.\n");
116
117 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
118 oldbufsize = 0;
119
120 if (oldbufsize < bufsize)
121 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
122 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
123
124 buflen = sizeof (oldbufsize);
125 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
126 }
127
128 state = ST_SETUP;
92 ns->mapmode = Map0Cmd; 129 mapmode = Map0Cmd;
93 ns->darkness = 1; 130 darkness = 1;
94 ns->status = Ns_Add;
95 ns->mapx = 11; 131 mapx = 11;
96 ns->mapy = 11; 132 mapy = 11;
97 ns->newmapcmd = 0;
98 ns->itemcmd = 1; /* Default is version item1 command */ 133 itemcmd = 1; /* Default is version item1 command */
99 ns->ext_mapinfos = 0; /*extendedmapinfo datas */
100 ns->EMI_smooth = 0;
101 ns->look_position = 0;
102 ns->update_look = 0;
103 ns->has_readable_type = 0;
104 ns->supported_readables = 0;
105 ns->monitor_spells = 0;
106 ns->mapinfocmd = 0;
107 ns->extcmd = 0;
108 ns->extmap = 0;
109 134
110 /* we should really do some checking here - if total clients overflows 135 faces_sent = salloc0<uint8> (nrofpixmaps);
111 * we need to do something more intelligent, because client id's will start
112 * duplicating (not likely in normal cases, but malicous attacks that
113 * just open and close connections could get this total up.
114 */
115 ns->inbuf_len = 0;
116 136
117 /* Basic initialization. Needed because we do a check in
118 * HandleClient for oldsocketmode without checking the
119 * length of data.
120 */
121 memset (&ns->lastmap, 0, sizeof (struct Map));
122 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent));
123 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent));
124 memset (&ns->stats, 0, sizeof (struct statsinfo));
125 /* 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
126 * 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
127 * face information. 139 * face information.
128 */ 140 */
129 ns->faces_sent[0] = NS_FACESENT_FACE; 141 faces_sent[0] = NS_FACESENT_FACE;
130 142
131 ns->outputbuffer.start = 0; 143 // socket I/O is low priority
132 ns->outputbuffer.len = 0; 144 // we prefer to have the server run instead of handling client requests
133 ns->can_write = 1; 145 socket_ev.prio (PE_PRIO_NORMAL + 1);
134 ns->password_fails = 0; 146 socket_ev.fd (fd);
147 socket_ev.poll (PE_R);
135 148
136 ns->current_map = 0; 149 // command handling is even lower priority
137 ns->current_x = 0; 150 // that way no client can monopolise the server
138 ns->current_y = 0; 151 cmd_ev.prio (PE_PRIO_NORMAL + 2);
139 ns->client[0] = 0;
140 ns->buggy_mapscroll = 0;
141 152
142 ns->sent_scroll = 0; 153 // initialisation done, kick it!
143 ns->host = strdup_local (from_ip);
144 sprintf ((char *) buf, "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);
145 sl.buf = (unsigned char *) buf; 155 flush ();
146 sl.len = strlen ((char *) buf);
147 Send_With_Handling (ns, &sl);
148#ifdef CS_LOGSTATS
149 if (socket_info.nconns > cst_tot.max_conn)
150 cst_tot.max_conn = socket_info.nconns;
151 if (socket_info.nconns > cst_lst.max_conn)
152 cst_lst.max_conn = socket_info.nconns;
153#endif
154}
155 156
157 reset_stats ();
158
159 clients.insert (this);
160}
161
162client::~client ()
163{
164 clients.erase (this);
165
166 sfree<uint8> (faces_sent, nrofpixmaps);
167 free (stats.range);
168 free (stats.title);
169 free (host);
170}
171
172void
173client::do_destroy ()
174{
175 attachable::do_destroy ();
176
177 if (pl)
178 pl->disconnect ();
179
180 if (fd >= 0)
181 {
182 send_packet ("goodbye");
183 flush ();
184
185 close (fd);
186 }
187
188 state = ST_DEAD;
189
190 socket_ev.suspend ();
191 cmd_ev.suspend ();
192
193 refcnt_dec (); // socket no longer open
194}
195
196void
197client::reset_stats ()
198{
199 /* we need to clear these to -1 and not zero - otherwise,
200 * if a player quits and starts a new character, we wont
201 * send new values to the client, as things like exp start
202 * at zero.
203 */
204 for (int i = 0; i < NUM_SKILLS; i++)
205 last_skill_exp[i] = -1;
206
207 for (int i = 0; i < NROFATTACKS; i++)
208 last_resist[i] = -1;
209
210 last_weapon_sp = -1;
211 last_level = -1;
212 last_stats.exp = -1;
213 last_weight = (uint32) - 1;
214 last_flags = 0;
215 last_weight = 0;
216 last_weight_limit = 0;
217 last_path_attuned = 0;
218 last_path_repelled = 0;
219 last_path_denied = 0;
220 last_speed = 0;
221 flags = 0;
222
223 static living zero_living;
224 last_stats = zero_living;
225}
156 226
157/** 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. */
158void 228void
159init_ericserver (void) 229init_ericserver (void)
160{ 230{
161 struct sockaddr_in insock;
162 struct protoent *protox;
163 struct linger linger_opt;
164
165 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
166
167 socket_info.timeout.tv_sec = 0;
168 socket_info.timeout.tv_usec = 0;
169 socket_info.nconns = 0;
170
171#ifdef CS_LOGSTATS
172 memset (&cst_tot, 0, sizeof (CS_Stats));
173 memset (&cst_lst, 0, sizeof (CS_Stats));
174 cst_tot.time_start = time (NULL); 231 cst_tot.time_start = time (NULL);
175 cst_lst.time_start = time (NULL); 232 cst_lst.time_start = time (NULL);
176#endif
177 233
178 LOG (llevDebug, "Initialize new client/server data\n"); 234 LOG (llevDebug, "Initialize new client/server data\n");
179 socket_info.nconns = 1;
180 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
181 init_sockets[0].faces_sent = NULL; /* unused */
182 socket_info.allocated_sockets = 1;
183 235
184 protox = getprotobyname ("tcp");
185 if (protox == NULL)
186 {
187 LOG (llevError, "init_ericserver: Error getting protox\n");
188 return;
189 }
190
191 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
192 if (init_sockets[0].fd == -1)
193 {
194 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
195 exit (-1);
196 }
197
198 insock.sin_family = AF_INET;
199 insock.sin_port = htons (settings.csport);
200 insock.sin_addr.s_addr = htonl (INADDR_ANY);
201
202 linger_opt.l_onoff = 0;
203 linger_opt.l_linger = 0;
204 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
205 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
206
207 {
208 int tmp = 1;
209
210 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
211 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
212 }
213
214 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
215 {
216 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
217 close (init_sockets[0].fd);
218 exit (-1);
219 }
220
221 if (listen (init_sockets[0].fd, 5) == (-1))
222 {
223 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
224 close (init_sockets[0].fd);
225 exit (-1);
226 }
227
228 init_sockets[0].status = Ns_Add;
229 read_client_images (); 236 read_client_images ();
230} 237}
231 238
232 239
233/******************************************************************************* 240/*******************************************************************************
… …
240void 247void
241free_all_newserver (void) 248free_all_newserver (void)
242{ 249{
243 LOG (llevDebug, "Freeing all new client/server information.\n"); 250 LOG (llevDebug, "Freeing all new client/server information.\n");
244 free_socket_images (); 251 free_socket_images ();
245 free (init_sockets);
246} 252}
247 253
248/** 254client *
249 * Frees a socket. 255client::create (int fd, const char *peername)
250 * Basically, all we need to do here is free all data structures that
251 * might be associated with the socket. It is up to the caller to
252 * update the list
253 */
254
255void
256free_newsocket (NewSocket *ns)
257{ 256{
258 close (ns->fd); 257 if (checkbanned (NULL, peername))
258 {
259 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
260 return 0;
261 }
262 else
263 {
264 client *ns = new client (dup (fd), peername);
259 265
260 if (ns->stats.range) 266 ns->instantiate (); // effectively a nop right now
261 free (ns->stats.range);
262 267
263 if (ns->stats.title) 268 INVOKE_CLIENT (CONNECT, ns);
264 free (ns->stats.title);
265 269
266 free (ns->host); 270 return ns;
271 }
267} 272}
268 273
269/** Sends the 'goodbye' command to the player, and closes connection. */
270void
271final_free_player (player *pl)
272{
273 cs_write_string (&pl->socket, "goodbye", 8);
274 free_newsocket (&pl->socket);
275 free_player (pl);
276}

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