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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.1 by elmex, Sun Aug 13 17:16:05 2006 UTC vs.
Revision 1.22 by root, Sat Dec 16 21:40:26 2006 UTC

1/*
2 * static char *rcsid_init_c =
3 * "$Id: init.C,v 1.1 2006/08/13 17:16:05 elmex 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>
50#include <netdb.h> 42#include <netdb.h>
51#endif /* win32 */
52 43
53#ifdef HAVE_UNISTD_H
54#include <unistd.h> 44#include <unistd.h>
55#endif 45#include <arpa/inet.h>
56 46
57#ifdef HAVE_ARPA_INET_H 47sockvec clients;
58#include <arpa/inet.h>
59#endif
60#include <newserver.h>
61
62Socket_Info socket_info;
63NewSocket *init_sockets;
64 48
65/** 49/**
66 * Initializes a connection. Really, it just sets up the data structure, 50 * Initializes a connection. Really, it just sets up the data structure,
67 * socket setup is handled elsewhere. We do send a version to the 51 * socket setup is handled elsewhere. We do send a version to the
68 * client. 52 * client.
69 */ 53 */
70void InitConnection(NewSocket *ns, const char *from_ip) 54client::client (int fd, const char *peername)
55: fd (fd), host (strdup (peername)),
56 socket_ev (this, &client::socket_cb),
57 cmd_ev (this, &client::cmd_cb)
71{ 58{
72 SockList sl; 59 {
73 char buf[256]; 60 struct linger linger_opt;
61
62 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0;
64
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
67 }
68
69 {
74 int bufsize=65535; /*Supposed absolute upper limit */ 70 int bufsize = 65535; /*Supposed absolute upper limit */
75 int oldbufsize; 71 int oldbufsize;
76 int buflen=sizeof(int); 72 int buflen = sizeof (int);
77 73
78#ifdef WIN32 /* ***WIN32 SOCKET: init win32 non blocking socket */ 74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
79 int temp = 1; 75 LOG (llevError, "InitConnection: Error on fcntl.\n");
80 76
81 if(ioctlsocket(ns->fd, FIONBIO , &temp) == -1) 77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
82 LOG(llevError,"InitConnection: Error on ioctlsocket.\n"); 78 oldbufsize = 0;
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 79
89 if (getsockopt(ns->fd,SOL_SOCKET,SO_SNDBUF, (char*)&oldbufsize, (socklen_t*) &buflen)==-1)
90 oldbufsize=0;
91 if (oldbufsize<bufsize) { 80 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))) { 81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
96 LOG(llevError,"InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 82 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 83
105 ns->faceset = 0; 84 buflen = sizeof (oldbufsize);
106 ns->facecache = 0; 85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
107 ns->image2 = 0; 86 }
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 87
130 /* we should really do some checking here - if total clients overflows 88 mapmode = Map0Cmd;
131 * we need to do something more intelligent, because client id's will start 89 darkness = 1;
132 * duplicating (not likely in normal cases, but malicous attacks that 90 status = Ns_Add;
133 * just open and close connections could get this total up. 91 mapx = 11;
134 */ 92 mapy = 11;
135 ns->inbuf.len=0; 93 itemcmd = 1; /* Default is version item1 command */
136 ns->inbuf.buf= (unsigned char*) malloc( sizeof( unsigned char ) * MAXSOCKBUF );
137 /* Basic initialization. Needed because we do a check in
138 * HandleClient for oldsocketmode without checking the
139 * length of data.
140 */
141 memset( ns->inbuf.buf, 0, sizeof( unsigned char ) * MAXSOCKBUF );
142 memset(&ns->lastmap,0,sizeof(struct Map));
143 memset(ns->faces_sent, 0, ns->faces_sent_len*sizeof(*ns->faces_sent));
144 memset(&ns->anims_sent,0,sizeof(ns->anims_sent));
145 memset(&ns->stats,0,sizeof(struct statsinfo));
146 /* Do this so we don't send a face command for the client for
147 * this face. Face 0 is sent to the client to say clear
148 * face information.
149 */
150 ns->faces_sent[0] = NS_FACESENT_FACE;
151 94
152 ns->outputbuffer.start=0; 95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
153 ns->outputbuffer.len=0;
154 ns->can_write=1;
155 ns->password_fails = 0;
156 96
157 ns->current_map = 0; 97 /* Do this so we don't send a face command for the client for
98 * this face. Face 0 is sent to the client to say clear
99 * face information.
100 */
101 faces_sent[0] = NS_FACESENT_FACE;
158 102
159 ns->sent_scroll=0; 103 // socket I/O is low priority
160 ns->host=strdup_local(from_ip); 104 // we prefer to have the server run instead of handling client requests
105 socket_ev.prio (PE_PRIO_NORMAL + 1);
106 socket_ev.fd (fd);
107 socket_ev.poll (PE_R);
108
109 // command handling is even lower priority
110 // that way no client can monopolise the server
111 cmd_ev.prio (PE_PRIO_NORMAL + 2);
112
113 // initialisation done, kick it!
161 sprintf((char*)buf, "version %d %d %s\n", VERSION_CS,VERSION_SC, VERSION_INFO); 114 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
162 sl.buf=(unsigned char*)buf; 115 flush ();
163 sl.len=strlen((char*)buf); 116
164 Send_With_Handling(ns, &sl); 117#if 0//TODO
165#ifdef CS_LOGSTATS 118 socket_info.nconns++;
166 if (socket_info.nconns>cst_tot.max_conn) 119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
167 cst_tot.max_conn = socket_info.nconns; 120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
168 if (socket_info.nconns>cst_lst.max_conn)
169 cst_lst.max_conn = socket_info.nconns;
170#endif 121#endif
171} 122}
172 123
124client::~client ()
125{
126 if (pl)
127 pl->socket = 0;
128
129 if (fd >= 0)
130 close (fd);
131
132 free (faces_sent);
133 free (stats.range);
134 free (stats.title);
135 free (host);
136}
137
138void
139client::destroy ()
140{
141 status = Ns_Dead;
142 socket_ev.suspend ();
143 cmd_ev.suspend ();
144}
173 145
174/** This sets up the socket and reads all the image information into memory. */ 146/** This sets up the socket and reads all the image information into memory. */
147void
175void init_ericserver(void) 148init_ericserver (void)
176{ 149{
177 struct sockaddr_in insock; 150 cst_tot.time_start = time (NULL);
178 struct protoent *protox; 151 cst_lst.time_start = time (NULL);
179 struct linger linger_opt;
180 152
181#ifdef WIN32 /* ***win32 - we init a windows socket */ 153 LOG (llevDebug, "Initialize new client/server data\n");
182 WSADATA w;
183 154
184 socket_info.max_filedescriptor = 1; /* used in select, ignored in winsockets */
185 WSAStartup (0x0101,&w); /* this setup all socket stuff */
186 /* ill include no error tests here, winsocket 1.1 should always work */
187 /* except some old win95 versions without tcp/ip stack */
188#else /* non windows */
189
190#ifdef HAVE_SYSCONF
191 socket_info.max_filedescriptor = sysconf(_SC_OPEN_MAX);
192#else
193# ifdef HAVE_GETDTABLESIZE
194 socket_info.max_filedescriptor = getdtablesize();
195# else
196 "Unable to find usable function to get max filedescriptors";
197# endif
198#endif
199#endif /* win32 */
200
201 socket_info.timeout.tv_sec = 0;
202 socket_info.timeout.tv_usec = 0;
203 socket_info.nconns=0;
204
205#ifdef CS_LOGSTATS
206 memset(&cst_tot, 0, sizeof(CS_Stats));
207 memset(&cst_lst, 0, sizeof(CS_Stats));
208 cst_tot.time_start=time(NULL);
209 cst_lst.time_start=time(NULL);
210#endif
211
212 LOG(llevDebug,"Initialize new client/server data\n");
213 socket_info.nconns = 1;
214 init_sockets = (NewSocket *) malloc(sizeof(NewSocket));
215 init_sockets[0].faces_sent = NULL; /* unused */
216 socket_info.allocated_sockets=1;
217
218 protox = getprotobyname("tcp");
219 if (protox==NULL) {
220 LOG(llevError,"init_ericserver: Error getting protox\n");
221 return;
222 }
223 init_sockets[0].fd = socket(PF_INET, SOCK_STREAM, protox->p_proto);
224 if (init_sockets[0].fd == -1) {
225 LOG(llevError, "Cannot create socket: %s\n", strerror_local(errno));
226 exit(-1);
227 }
228 insock.sin_family = AF_INET;
229 insock.sin_port = htons(settings.csport);
230 insock.sin_addr.s_addr = htonl(INADDR_ANY);
231
232 linger_opt.l_onoff = 0;
233 linger_opt.l_linger = 0;
234 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_LINGER,(char *) &linger_opt,
235 sizeof(struct linger))) {
236 LOG(llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror_local(errno));
237 }
238/* Would be nice to have an autoconf check for this. It appears that
239 * these functions are both using the same calling syntax, just one
240 * of them needs extra valus passed.
241 */
242#if defined(__osf__) || defined(hpux) || defined(sgi) || defined(NeXT) || \
243 defined(__sun__) || defined(__linux__) || defined(SVR4) || \
244 defined(__FreeBSD__) || defined(__OpenBSD__) || \
245 defined(WIN32) /* ---win32 add this here */ || \
246 defined(__GNU__) /* HURD */
247 {
248#ifdef WIN32
249 char tmp = 1;
250#else
251 int tmp =1;
252#endif
253
254 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR, &tmp, sizeof(tmp))) {
255 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror_local(errno));
256 }
257 }
258#else
259 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR,(char *)NULL,0)) {
260 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror_local(errno));
261 }
262#endif
263
264 if (bind(init_sockets[0].fd,(struct sockaddr *)&insock,sizeof(insock)) == (-1)) {
265 LOG(llevError, "Cannot bind socket to port %d: %s\n", ntohs(insock.sin_port), strerror_local(errno));
266#ifdef WIN32 /* ***win32: close() -> closesocket() */
267 shutdown(init_sockets[0].fd,SD_BOTH);
268 closesocket(init_sockets[0].fd);
269#else
270 close(init_sockets[0].fd);
271#endif /* win32 */
272 exit(-1);
273 }
274 if (listen(init_sockets[0].fd,5) == (-1)) {
275 LOG(llevError, "Cannot listen on socket: %s\n", strerror_local(errno));
276#ifdef WIN32 /* ***win32: close() -> closesocket() */
277 shutdown(init_sockets[0].fd,SD_BOTH);
278 closesocket(init_sockets[0].fd);
279#else
280 close(init_sockets[0].fd);
281#endif /* win32 */
282 exit(-1);
283 }
284 init_sockets[0].status=Ns_Add;
285 read_client_images(); 155 read_client_images ();
286} 156}
287 157
288 158
289/******************************************************************************* 159/*******************************************************************************
290 * 160 *
291 * Start of functions dealing with freeing of the data. 161 * Start of functions dealing with freeing of the data.
292 * 162 *
293 ******************************************************************************/ 163 ******************************************************************************/
294 164
295/** Free's all the memory that ericserver allocates. */ 165/** Free's all the memory that ericserver allocates. */
166void
296void free_all_newserver(void) 167free_all_newserver (void)
297{
298 LOG(llevDebug,"Freeing all new client/server information.\n");
299 free_socket_images();
300 free(init_sockets);
301}
302
303/**
304 * Frees a socket.
305 * Basically, all we need to do here is free all data structures that
306 * might be associated with the socket. It is up to the caller to
307 * update the list
308 */
309
310void free_newsocket(NewSocket *ns)
311{ 168{
312#ifdef WIN32 /* ***win32: closesocket in windows style */ 169 LOG (llevDebug, "Freeing all new client/server information.\n");
313 shutdown(ns->fd,SD_BOTH); 170 free_socket_images ();
314 if (closesocket(ns->fd)) {
315#else
316 if (close(ns->fd)) {
317#endif /* win32 */
318
319#ifdef ESRV_DEBUG
320 LOG(llevDebug,"Error closing socket %d\n", ns->fd);
321#endif
322 }
323 if (ns->stats.range)
324 free(ns->stats.range);
325 if (ns->stats.title)
326 free(ns->stats.title);
327 if (ns->comment)
328 free(ns->comment);
329 free(ns->host);
330 free(ns->inbuf.buf);
331} 171}
332 172
333/** Sends the 'goodbye' command to the player, and closes connection. */ 173/** Sends the 'goodbye' command to the player, and closes connection. */
174void
334void final_free_player(player *pl) 175final_free_player (player *pl)
335{ 176{
336 cs_write_string(&pl->socket, "goodbye", 8);
337 free_newsocket(&pl->socket);
338 free_player(pl); 177 free_player (pl);
339} 178}
340 179
180bool
181add_client (int fd, const char *peername)
182{
183 if (checkbanned (NULL, peername))
184 {
185 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
186 return false;
187 }
188 else
189 {
190 client *ns = new client (dup (fd), peername);
191 clients.push_back (ns);
192 return true;
193 }
194}
195

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