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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.7 by root, Sun Sep 10 13:43:33 2006 UTC vs.
Revision 1.35 by root, Mon Jan 8 18:18:36 2007 UTC

1
2/*
3 * static char *rcsid_init_c =
4 * "$Id: init.C,v 1.7 2006/09/10 13:43:33 root Exp $";
5 */
6
7/* 1/*
8 CrossFire, A Multiplayer game for X-windows 2 CrossFire, A Multiplayer game for X-windows
9 3
4 Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
10 Copyright (C) 2001 Mark Wedel 5 Copyright (C) 2001 Mark Wedel
11 Copyright (C) 1992 Frank Tore Johansen 6 Copyright (C) 1992 Frank Tore Johansen
12 7
13 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
14 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
… …
22 17
23 You should have received a copy of the GNU General Public License 18 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software 19 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 21
27 The author can be reached via e-mail to crossfire-devel@real-time.com 22 The author can be reached via e-mail to <crossfire@schmorp.de>
28*/ 23*/
29 24
30/** 25/**
31 * \file 26 * \file
32 * Socket general functions 27 * Socket general functions
… …
36 * Mainly deals with initialization and higher level socket 31 * Mainly deals with initialization and higher level socket
37 * maintenance (checking for lost connections and if data has arrived.) 32 * maintenance (checking for lost connections and if data has arrived.)
38 * The reading of data is handled in ericserver.c 33 * The reading of data is handled in ericserver.c
39 */ 34 */
40 35
41
42#include <global.h> 36#include <global.h>
43#ifndef __CEXTRACT__
44# include <sproto.h> 37#include <sproto.h>
45#endif
46#ifndef WIN32 /* ---win32 exclude include files */
47# include <sys/types.h> 38#include <sys/types.h>
48# include <sys/time.h> 39#include <sys/time.h>
49# include <sys/socket.h> 40#include <sys/socket.h>
50# include <netinet/in.h> 41#include <netinet/in.h>
42#include <netinet/tcp.h>
43#include <netinet/ip.h>
51# include <netdb.h> 44#include <netdb.h>
52#endif /* win32 */
53 45
54#ifdef HAVE_UNISTD_H
55# include <unistd.h> 46#include <unistd.h>
56#endif
57
58#ifdef HAVE_ARPA_INET_H
59# include <arpa/inet.h> 47#include <arpa/inet.h>
60#endif
61#include <newserver.h>
62 48
63Socket_Info socket_info; 49#include <algorithm>
64NewSocket *init_sockets; 50
51sockvec clients;
65 52
66/** 53/**
67 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
68 * 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
69 * client. 56 * client.
70 */ 57 */
71void 58client::client (int fd, const char *peername)
72InitConnection (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)
73{ 63{
74 SockList sl; 64 refcnt_inc (); // the socket is an external reference
75 char buf[256]; 65
66 {
67 struct linger linger_opt;
68
69 linger_opt.l_onoff = 0;
70 linger_opt.l_linger = 0;
71
72 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
73 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
74 }
75
76 {
77 int val = IPTOS_LOWDELAY;
78
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 }
107#endif
108
109 {
76 int bufsize = 65535; /*Supposed absolute upper limit */ 110 int bufsize = 65535; /*Supposed absolute upper limit */
77 int oldbufsize; 111 int oldbufsize;
78 int buflen = sizeof (int); 112 int buflen = sizeof (int);
79 113
80#ifdef WIN32 /* ***WIN32 SOCKET: init win32 non blocking socket */
81 int temp = 1;
82
83 if (ioctlsocket (ns->fd, FIONBIO, &temp) == -1)
84 LOG (llevError, "InitConnection: Error on ioctlsocket.\n");
85#else
86 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 114 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
87 {
88 LOG (llevError, "InitConnection: Error on fcntl.\n"); 115 LOG (llevError, "InitConnection: Error on fcntl.\n");
89 }
90#endif /* end win32 */
91 116
92 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 117 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
93 oldbufsize = 0; 118 oldbufsize = 0;
119
94 if (oldbufsize < bufsize) 120 if (oldbufsize < bufsize)
95 {
96#ifdef ESRV_DEBUG
97 LOG (llevDebug, "Default buffer size was %d bytes, will reset it to %d\n", oldbufsize, bufsize);
98#endif
99 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 121 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
100 {
101 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 122 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
102 } 123
103 }
104 buflen = sizeof (oldbufsize); 124 buflen = sizeof (oldbufsize);
105 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 125 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
106#ifdef ESRV_DEBUG 126 }
107 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
108#endif
109 127
110 ns->faceset = 0; 128 state = ST_SETUP;
111 ns->facecache = 0;
112 ns->image2 = 0;
113 ns->sound = 0;
114 ns->exp64 = 0;
115 ns->monitor_spells = 0;
116 ns->mapmode = Map0Cmd; 129 mapmode = Map0Cmd;
117 ns->darkness = 1; 130 darkness = 1;
118 ns->status = Ns_Add;
119 ns->comment = NULL;
120 ns->old_mode = (Old_Mode) 0;
121 ns->mapx = 11; 131 mapx = 11;
122 ns->mapy = 11; 132 mapy = 11;
123 ns->newmapcmd = 0;
124 ns->itemcmd = 1; /* Default is version item1 command */ 133 itemcmd = 1; /* Default is version item1 command */
125 ns->ext_mapinfos = 0; /*extendedmapinfo datas */
126 ns->EMI_smooth = 0;
127 ns->look_position = 0;
128 ns->update_look = 0;
129 ns->has_readable_type = 0;
130 ns->supported_readables = 0;
131 ns->monitor_spells = 0;
132 ns->mapinfocmd = 0;
133 ns->extcmd = 0;
134 ns->extmap = 0;
135 134
136 /* we should really do some checking here - if total clients overflows 135 faces_sent = salloc0<uint8> (nrofpixmaps);
137 * we need to do something more intelligent, because client id's will start 136
138 * duplicating (not likely in normal cases, but malicous attacks that
139 * just open and close connections could get this total up.
140 */
141 ns->inbuf.len = 0;
142 ns->inbuf.buf = (unsigned char *) malloc (sizeof (unsigned char) * MAXSOCKBUF);
143 /* Basic initialization. Needed because we do a check in
144 * HandleClient for oldsocketmode without checking the
145 * length of data.
146 */
147 memset (ns->inbuf.buf, 0, sizeof (unsigned char) * MAXSOCKBUF);
148 memset (&ns->lastmap, 0, sizeof (struct Map));
149 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent));
150 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent));
151 memset (&ns->stats, 0, sizeof (struct statsinfo));
152 /* 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
153 * 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
154 * face information. 139 * face information.
155 */ 140 */
156 ns->faces_sent[0] = NS_FACESENT_FACE; 141 faces_sent[0] = NS_FACESENT_FACE;
157 142
158 ns->outputbuffer.start = 0; 143 // socket I/O is low priority
159 ns->outputbuffer.len = 0; 144 // we prefer to have the server run instead of handling client requests
160 ns->can_write = 1; 145 socket_ev.prio (PE_PRIO_NORMAL + 1);
161 ns->password_fails = 0; 146 socket_ev.fd (fd);
147 socket_ev.poll (PE_R);
162 148
163 ns->current_map = 0; 149 // command handling is even lower priority
164 ns->current_x = 0; 150 // that way no client can monopolise the server
165 ns->current_y = 0; 151 cmd_ev.prio (PE_PRIO_NORMAL + 2);
166 ns->client[0] = 0;
167 ns->buggy_mapscroll = 0;
168 152
169 ns->sent_scroll = 0; 153 // initialisation done, kick it!
170 ns->host = strdup_local (from_ip);
171 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);
172 sl.buf = (unsigned char *) buf; 155 flush ();
173 sl.len = strlen ((char *) buf);
174 Send_With_Handling (ns, &sl);
175#ifdef CS_LOGSTATS
176 if (socket_info.nconns > cst_tot.max_conn)
177 cst_tot.max_conn = socket_info.nconns;
178 if (socket_info.nconns > cst_lst.max_conn)
179 cst_lst.max_conn = socket_info.nconns;
180#endif
181}
182 156
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}
183 226
184/** 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. */
185void 228void
186init_ericserver (void) 229init_ericserver (void)
187{ 230{
188 struct sockaddr_in insock;
189 struct protoent *protox;
190 struct linger linger_opt;
191
192#ifdef WIN32 /* ***win32 - we init a windows socket */
193 WSADATA w;
194
195 socket_info.max_filedescriptor = 1; /* used in select, ignored in winsockets */
196 WSAStartup (0x0101, &w); /* this setup all socket stuff */
197 /* ill include no error tests here, winsocket 1.1 should always work */
198 /* except some old win95 versions without tcp/ip stack */
199#else /* non windows */
200
201# ifdef HAVE_SYSCONF
202 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
203# else
204# ifdef HAVE_GETDTABLESIZE
205 socket_info.max_filedescriptor = getdtablesize ();
206# else
207 "Unable to find usable function to get max filedescriptors";
208# endif
209# endif
210#endif /* win32 */
211
212 socket_info.timeout.tv_sec = 0;
213 socket_info.timeout.tv_usec = 0;
214 socket_info.nconns = 0;
215
216#ifdef CS_LOGSTATS
217 memset (&cst_tot, 0, sizeof (CS_Stats));
218 memset (&cst_lst, 0, sizeof (CS_Stats));
219 cst_tot.time_start = time (NULL); 231 cst_tot.time_start = time (NULL);
220 cst_lst.time_start = time (NULL); 232 cst_lst.time_start = time (NULL);
221#endif
222 233
223 LOG (llevDebug, "Initialize new client/server data\n"); 234 LOG (llevDebug, "Initialize new client/server data\n");
224 socket_info.nconns = 1;
225 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
226 init_sockets[0].faces_sent = NULL; /* unused */
227 socket_info.allocated_sockets = 1;
228 235
229 protox = getprotobyname ("tcp");
230 if (protox == NULL)
231 {
232 LOG (llevError, "init_ericserver: Error getting protox\n");
233 return;
234 }
235 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
236 if (init_sockets[0].fd == -1)
237 {
238 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
239 exit (-1);
240 }
241 insock.sin_family = AF_INET;
242 insock.sin_port = htons (settings.csport);
243 insock.sin_addr.s_addr = htonl (INADDR_ANY);
244
245 linger_opt.l_onoff = 0;
246 linger_opt.l_linger = 0;
247 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
248 {
249 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
250 }
251
252/* Would be nice to have an autoconf check for this. It appears that
253 * these functions are both using the same calling syntax, just one
254 * of them needs extra valus passed.
255 */
256#if defined(__osf__) || defined(hpux) || defined(sgi) || defined(NeXT) || \
257 defined(__sun__) || defined(__linux__) || defined(SVR4) || \
258 defined(__FreeBSD__) || defined(__OpenBSD__) || \
259 defined(WIN32) /* ---win32 add this here */ || \
260 defined(__GNU__) /* HURD */
261 {
262# ifdef WIN32
263 char tmp = 1;
264# else
265 int tmp = 1;
266# endif
267
268 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
269 {
270 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
271 }
272 }
273#else
274 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, (char *) NULL, 0))
275 {
276 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
277 }
278#endif
279
280 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
281 {
282 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
283#ifdef WIN32 /* ***win32: close() -> closesocket() */
284 shutdown (init_sockets[0].fd, SD_BOTH);
285 closesocket (init_sockets[0].fd);
286#else
287 close (init_sockets[0].fd);
288#endif /* win32 */
289 exit (-1);
290 }
291 if (listen (init_sockets[0].fd, 5) == (-1))
292 {
293 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
294#ifdef WIN32 /* ***win32: close() -> closesocket() */
295 shutdown (init_sockets[0].fd, SD_BOTH);
296 closesocket (init_sockets[0].fd);
297#else
298 close (init_sockets[0].fd);
299#endif /* win32 */
300 exit (-1);
301 }
302 init_sockets[0].status = Ns_Add;
303 read_client_images (); 236 read_client_images ();
304} 237}
305 238
306 239
307/******************************************************************************* 240/*******************************************************************************
… …
314void 247void
315free_all_newserver (void) 248free_all_newserver (void)
316{ 249{
317 LOG (llevDebug, "Freeing all new client/server information.\n"); 250 LOG (llevDebug, "Freeing all new client/server information.\n");
318 free_socket_images (); 251 free_socket_images ();
319 free (init_sockets);
320} 252}
321 253
322/** 254client *
323 * Frees a socket. 255client::create (int fd, const char *peername)
324 * Basically, all we need to do here is free all data structures that
325 * might be associated with the socket. It is up to the caller to
326 * update the list
327 */
328
329void
330free_newsocket (NewSocket * ns)
331{ 256{
332#ifdef WIN32 /* ***win32: closesocket in windows style */ 257 if (checkbanned (NULL, peername))
333 shutdown (ns->fd, SD_BOTH);
334 if (closesocket (ns->fd))
335 { 258 {
336#else 259 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
337 if (close (ns->fd)) 260 return 0;
261 }
262 else
338 { 263 {
339#endif /* win32 */ 264 client *ns = new client (dup (fd), peername);
340 265
341#ifdef ESRV_DEBUG 266 ns->instantiate (); // effectively a nop right now
342 LOG (llevDebug, "Error closing socket %d\n", ns->fd); 267
343#endif 268 INVOKE_CLIENT (CONNECT, ns);
269
270 return ns;
344 } 271 }
345 if (ns->stats.range)
346 free (ns->stats.range);
347 if (ns->stats.title)
348 free (ns->stats.title);
349 if (ns->comment)
350 free (ns->comment);
351 free (ns->host);
352 free (ns->inbuf.buf);
353} 272}
354 273
355/** Sends the 'goodbye' command to the player, and closes connection. */
356void
357final_free_player (player *pl)
358{
359 cs_write_string (&pl->socket, "goodbye", 8);
360 free_newsocket (&pl->socket);
361 free_player (pl);
362}

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