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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.3 by root, Fri Aug 18 02:06:58 2006 UTC vs.
Revision 1.23 by root, Sun Dec 17 00:25:44 2006 UTC

1/*
2 * static char *rcsid_init_c =
3 * "$Id: init.C,v 1.3 2006/08/18 02:06:58 root Exp $";
4 */
5
6/* 1/*
7 CrossFire, A Multiplayer game for X-windows 2 CrossFire, A Multiplayer game for X-windows
8 3
9 Copyright (C) 2001 Mark Wedel 4 Copyright (C) 2001 Mark Wedel
10 Copyright (C) 1992 Frank Tore Johansen 5 Copyright (C) 1992 Frank Tore Johansen
… …
21 16
22 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software 18 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 20
26 The author can be reached via e-mail to crossfire-devel@real-time.com 21 The author can be reached via e-mail to <crossfire@schmorp.de>
27*/ 22*/
28 23
29/** 24/**
30 * \file 25 * \file
31 * Socket general functions 26 * Socket general functions
… …
37 * The reading of data is handled in ericserver.c 32 * The reading of data is handled in ericserver.c
38 */ 33 */
39 34
40 35
41#include <global.h> 36#include <global.h>
42#ifndef __CEXTRACT__
43#include <sproto.h> 37#include <sproto.h>
44#endif
45#ifndef WIN32 /* ---win32 exclude include files */
46#include <sys/types.h> 38#include <sys/types.h>
47#include <sys/time.h> 39#include <sys/time.h>
48#include <sys/socket.h> 40#include <sys/socket.h>
49#include <netinet/in.h> 41#include <netinet/in.h>
42#include <netinet/tcp.h>
43#include <netinet/ip.h>
50#include <netdb.h> 44#include <netdb.h>
51#endif /* win32 */
52 45
53#ifdef HAVE_UNISTD_H
54#include <unistd.h> 46#include <unistd.h>
55#endif
56
57#ifdef HAVE_ARPA_INET_H
58#include <arpa/inet.h> 47#include <arpa/inet.h>
59#endif
60#include <newserver.h>
61 48
62Socket_Info socket_info; 49sockvec clients;
63NewSocket *init_sockets;
64 50
65/** 51/**
66 * Initializes a connection. Really, it just sets up the data structure, 52 * Initializes a connection. Really, it just sets up the data structure,
67 * socket setup is handled elsewhere. We do send a version to the 53 * socket setup is handled elsewhere. We do send a version to the
68 * client. 54 * client.
69 */ 55 */
70void InitConnection(NewSocket *ns, const char *from_ip) 56client::client (int fd, const char *peername)
57: fd (fd), host (strdup (peername)),
58 socket_ev (this, &client::socket_cb),
59 cmd_ev (this, &client::cmd_cb)
71{ 60{
72 SockList sl; 61 {
73 char buf[256];
74 int bufsize=65535; /*Supposed absolute upper limit */
75 int oldbufsize;
76 int buflen=sizeof(int);
77
78#ifdef WIN32 /* ***WIN32 SOCKET: init win32 non blocking socket */
79 int temp = 1;
80
81 if(ioctlsocket(ns->fd, FIONBIO , &temp) == -1)
82 LOG(llevError,"InitConnection: Error on ioctlsocket.\n");
83#else
84 if (fcntl(ns->fd, F_SETFL, O_NONBLOCK)==-1) {
85 LOG(llevError,"InitConnection: Error on fcntl.\n");
86 }
87#endif /* end win32 */
88
89 if (getsockopt(ns->fd,SOL_SOCKET,SO_SNDBUF, (char*)&oldbufsize, (socklen_t*) &buflen)==-1)
90 oldbufsize=0;
91 if (oldbufsize<bufsize) {
92#ifdef ESRV_DEBUG
93 LOG(llevDebug, "Default buffer size was %d bytes, will reset it to %d\n", oldbufsize, bufsize);
94#endif
95 if(setsockopt(ns->fd,SOL_SOCKET,SO_SNDBUF, (char*)&bufsize, sizeof(&bufsize))) {
96 LOG(llevError,"InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
97 }
98 }
99 buflen=sizeof(oldbufsize);
100 getsockopt(ns->fd,SOL_SOCKET,SO_SNDBUF, (char*)&oldbufsize, (socklen_t*) &buflen);
101#ifdef ESRV_DEBUG
102 LOG(llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
103#endif
104
105 ns->faceset = 0;
106 ns->facecache = 0;
107 ns->image2 = 0;
108 ns->sound = 0;
109 ns->exp64 = 0;
110 ns->monitor_spells = 0;
111 ns->mapmode = Map0Cmd;
112 ns->darkness = 1;
113 ns->status = Ns_Add;
114 ns->comment = NULL;
115 ns->old_mode = (Old_Mode) 0;
116 ns->mapx = 11;
117 ns->mapy = 11;
118 ns->newmapcmd= 0;
119 ns->itemcmd = 1; /* Default is version item1 command*/
120 ns->ext_mapinfos=0; /*extendedmapinfo datas*/
121 ns->EMI_smooth=0;
122 ns->look_position = 0;
123 ns->update_look = 0;
124 ns->has_readable_type = 0;
125 ns->supported_readables = 0;
126 ns->monitor_spells = 0;
127 ns->mapinfocmd = 0;
128 ns->extcmd = 0;
129 ns->extmap = 0;
130
131 /* we should really do some checking here - if total clients overflows
132 * we need to do something more intelligent, because client id's will start
133 * duplicating (not likely in normal cases, but malicous attacks that
134 * just open and close connections could get this total up.
135 */
136 ns->inbuf.len=0;
137 ns->inbuf.buf= (unsigned char*) malloc( sizeof( unsigned char ) * MAXSOCKBUF );
138 /* Basic initialization. Needed because we do a check in
139 * HandleClient for oldsocketmode without checking the
140 * length of data.
141 */
142 memset( ns->inbuf.buf, 0, sizeof( unsigned char ) * MAXSOCKBUF );
143 memset(&ns->lastmap,0,sizeof(struct Map));
144 memset(ns->faces_sent, 0, ns->faces_sent_len*sizeof(*ns->faces_sent));
145 memset(&ns->anims_sent,0,sizeof(ns->anims_sent));
146 memset(&ns->stats,0,sizeof(struct statsinfo));
147 /* Do this so we don't send a face command for the client for
148 * this face. Face 0 is sent to the client to say clear
149 * face information.
150 */
151 ns->faces_sent[0] = NS_FACESENT_FACE;
152
153 ns->outputbuffer.start=0;
154 ns->outputbuffer.len=0;
155 ns->can_write=1;
156 ns->password_fails = 0;
157
158 ns->current_map = 0;
159 ns->current_x = 0;
160 ns->current_y = 0;
161
162 ns->sent_scroll=0;
163 ns->host=strdup_local(from_ip);
164 sprintf((char*)buf, "version %d %d %s\n", VERSION_CS,VERSION_SC, VERSION_INFO);
165 sl.buf=(unsigned char*)buf;
166 sl.len=strlen((char*)buf);
167 Send_With_Handling(ns, &sl);
168#ifdef CS_LOGSTATS
169 if (socket_info.nconns>cst_tot.max_conn)
170 cst_tot.max_conn = socket_info.nconns;
171 if (socket_info.nconns>cst_lst.max_conn)
172 cst_lst.max_conn = socket_info.nconns;
173#endif
174}
175
176
177/** This sets up the socket and reads all the image information into memory. */
178void init_ericserver(void)
179{
180 struct sockaddr_in insock;
181 struct protoent *protox;
182 struct linger linger_opt; 62 struct linger linger_opt;
183
184#ifdef WIN32 /* ***win32 - we init a windows socket */
185 WSADATA w;
186
187 socket_info.max_filedescriptor = 1; /* used in select, ignored in winsockets */
188 WSAStartup (0x0101,&w); /* this setup all socket stuff */
189 /* ill include no error tests here, winsocket 1.1 should always work */
190 /* except some old win95 versions without tcp/ip stack */
191#else /* non windows */
192
193#ifdef HAVE_SYSCONF
194 socket_info.max_filedescriptor = sysconf(_SC_OPEN_MAX);
195#else
196# ifdef HAVE_GETDTABLESIZE
197 socket_info.max_filedescriptor = getdtablesize();
198# else
199 "Unable to find usable function to get max filedescriptors";
200# endif
201#endif
202#endif /* win32 */
203
204 socket_info.timeout.tv_sec = 0;
205 socket_info.timeout.tv_usec = 0;
206 socket_info.nconns=0;
207
208#ifdef CS_LOGSTATS
209 memset(&cst_tot, 0, sizeof(CS_Stats));
210 memset(&cst_lst, 0, sizeof(CS_Stats));
211 cst_tot.time_start=time(NULL);
212 cst_lst.time_start=time(NULL);
213#endif
214
215 LOG(llevDebug,"Initialize new client/server data\n");
216 socket_info.nconns = 1;
217 init_sockets = (NewSocket *) malloc(sizeof(NewSocket));
218 init_sockets[0].faces_sent = NULL; /* unused */
219 socket_info.allocated_sockets=1;
220
221 protox = getprotobyname("tcp");
222 if (protox==NULL) {
223 LOG(llevError,"init_ericserver: Error getting protox\n");
224 return;
225 }
226 init_sockets[0].fd = socket(PF_INET, SOCK_STREAM, protox->p_proto);
227 if (init_sockets[0].fd == -1) {
228 LOG(llevError, "Cannot create socket: %s\n", strerror_local(errno));
229 exit(-1);
230 }
231 insock.sin_family = AF_INET;
232 insock.sin_port = htons(settings.csport);
233 insock.sin_addr.s_addr = htonl(INADDR_ANY);
234 63
235 linger_opt.l_onoff = 0; 64 linger_opt.l_onoff = 0;
236 linger_opt.l_linger = 0; 65 linger_opt.l_linger = 0;
237 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_LINGER,(char *) &linger_opt, 66
238 sizeof(struct linger))) { 67 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
239 LOG(llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror_local(errno)); 68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 }
70
71 {
72 int val = IPTOS_LOWDELAY;
73
74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
75 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
76 }
77
78 {
79 int val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
83 }
84
85#ifdef __linux__
86 {
87 int val;
88
89 // set some very aggressive keepalive parameters
90 val = 10;
91 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
92 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
93
94 val = 5;
95 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
96 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
97
98 val = 1;
99 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
100 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
101 }
102#endif
103
104 {
105 int bufsize = 65535; /*Supposed absolute upper limit */
106 int oldbufsize;
107 int buflen = sizeof (int);
108
109 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
110 LOG (llevError, "InitConnection: Error on fcntl.\n");
111
112 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
113 oldbufsize = 0;
114
115 if (oldbufsize < bufsize)
116 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
117 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
118
119 buflen = sizeof (oldbufsize);
120 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
121 }
122
123 mapmode = Map0Cmd;
124 darkness = 1;
125 status = Ns_Add;
126 mapx = 11;
127 mapy = 11;
128 itemcmd = 1; /* Default is version item1 command */
129
130 faces_sent = salloc<uint8> (nrofpixmaps, 0);
131
132 /* Do this so we don't send a face command for the client for
133 * this face. Face 0 is sent to the client to say clear
134 * face information.
135 */
136 faces_sent[0] = NS_FACESENT_FACE;
137
138 // socket I/O is low priority
139 // we prefer to have the server run instead of handling client requests
140 socket_ev.prio (PE_PRIO_NORMAL + 1);
141 socket_ev.fd (fd);
142 socket_ev.poll (PE_R);
143
144 // command handling is even lower priority
145 // that way no client can monopolise the server
146 cmd_ev.prio (PE_PRIO_NORMAL + 2);
147
148 // initialisation done, kick it!
149 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
150 flush ();
151
152#if 0//TODO
153 socket_info.nconns++;
154 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
155 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
156#endif
157}
158
159client::~client ()
160{
161 if (pl)
162 pl->socket = 0;
163
164 if (fd >= 0)
165 close (fd);
166
167 free (faces_sent);
168 free (stats.range);
169 free (stats.title);
170 free (host);
171}
172
173void
174client::destroy ()
175{
176 status = Ns_Dead;
177 socket_ev.suspend ();
178 cmd_ev.suspend ();
179}
180
181/** This sets up the socket and reads all the image information into memory. */
182void
183init_ericserver (void)
184{
185 cst_tot.time_start = time (NULL);
186 cst_lst.time_start = time (NULL);
187
188 LOG (llevDebug, "Initialize new client/server data\n");
189
190 read_client_images ();
191}
192
193
194/*******************************************************************************
195 *
196 * Start of functions dealing with freeing of the data.
197 *
198 ******************************************************************************/
199
200/** Free's all the memory that ericserver allocates. */
201void
202free_all_newserver (void)
203{
204 LOG (llevDebug, "Freeing all new client/server information.\n");
205 free_socket_images ();
206}
207
208/** Sends the 'goodbye' command to the player, and closes connection. */
209void
210final_free_player (player *pl)
211{
212 free_player (pl);
213}
214
215bool
216add_client (int fd, const char *peername)
217{
218 if (checkbanned (NULL, peername))
219 {
220 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
221 return false;
240 } 222 }
241/* Would be nice to have an autoconf check for this. It appears that 223 else
242 * these functions are both using the same calling syntax, just one
243 * of them needs extra valus passed.
244 */
245#if defined(__osf__) || defined(hpux) || defined(sgi) || defined(NeXT) || \
246 defined(__sun__) || defined(__linux__) || defined(SVR4) || \
247 defined(__FreeBSD__) || defined(__OpenBSD__) || \
248 defined(WIN32) /* ---win32 add this here */ || \
249 defined(__GNU__) /* HURD */
250 { 224 {
251#ifdef WIN32 225 client *ns = new client (dup (fd), peername);
252 char tmp = 1; 226 clients.push_back (ns);
253#else 227 return true;
254 int tmp =1;
255#endif
256
257 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR, &tmp, sizeof(tmp))) {
258 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror_local(errno));
259 }
260 } 228 }
261#else
262 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR,(char *)NULL,0)) {
263 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror_local(errno));
264 }
265#endif
266
267 if (bind(init_sockets[0].fd,(struct sockaddr *)&insock,sizeof(insock)) == (-1)) {
268 LOG(llevError, "Cannot bind socket to port %d: %s\n", ntohs(insock.sin_port), strerror_local(errno));
269#ifdef WIN32 /* ***win32: close() -> closesocket() */
270 shutdown(init_sockets[0].fd,SD_BOTH);
271 closesocket(init_sockets[0].fd);
272#else
273 close(init_sockets[0].fd);
274#endif /* win32 */
275 exit(-1);
276 }
277 if (listen(init_sockets[0].fd,5) == (-1)) {
278 LOG(llevError, "Cannot listen on socket: %s\n", strerror_local(errno));
279#ifdef WIN32 /* ***win32: close() -> closesocket() */
280 shutdown(init_sockets[0].fd,SD_BOTH);
281 closesocket(init_sockets[0].fd);
282#else
283 close(init_sockets[0].fd);
284#endif /* win32 */
285 exit(-1);
286 }
287 init_sockets[0].status=Ns_Add;
288 read_client_images();
289} 229}
290 230
291
292/*******************************************************************************
293 *
294 * Start of functions dealing with freeing of the data.
295 *
296 ******************************************************************************/
297
298/** Free's all the memory that ericserver allocates. */
299void free_all_newserver(void)
300{
301 LOG(llevDebug,"Freeing all new client/server information.\n");
302 free_socket_images();
303 free(init_sockets);
304}
305
306/**
307 * Frees a socket.
308 * Basically, all we need to do here is free all data structures that
309 * might be associated with the socket. It is up to the caller to
310 * update the list
311 */
312
313void free_newsocket(NewSocket *ns)
314{
315#ifdef WIN32 /* ***win32: closesocket in windows style */
316 shutdown(ns->fd,SD_BOTH);
317 if (closesocket(ns->fd)) {
318#else
319 if (close(ns->fd)) {
320#endif /* win32 */
321
322#ifdef ESRV_DEBUG
323 LOG(llevDebug,"Error closing socket %d\n", ns->fd);
324#endif
325 }
326 if (ns->stats.range)
327 free(ns->stats.range);
328 if (ns->stats.title)
329 free(ns->stats.title);
330 if (ns->comment)
331 free(ns->comment);
332 free(ns->host);
333 free(ns->inbuf.buf);
334}
335
336/** Sends the 'goodbye' command to the player, and closes connection. */
337void final_free_player(player *pl)
338{
339 cs_write_string(&pl->socket, "goodbye", 8);
340 free_newsocket(&pl->socket);
341 free_player(pl);
342}
343

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