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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 1.22 by root, Sat Dec 16 21:40:26 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>
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 ns->extmap = 0;
130 87
131 /* we should really do some checking here - if total clients overflows 88 mapmode = Map0Cmd;
132 * we need to do something more intelligent, because client id's will start 89 darkness = 1;
133 * duplicating (not likely in normal cases, but malicous attacks that 90 status = Ns_Add;
134 * just open and close connections could get this total up. 91 mapx = 11;
135 */ 92 mapy = 11;
136 ns->inbuf.len=0; 93 itemcmd = 1; /* Default is version item1 command */
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 94
153 ns->outputbuffer.start=0; 95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
154 ns->outputbuffer.len=0;
155 ns->can_write=1;
156 ns->password_fails = 0;
157 96
158 ns->current_map = 0; 97 /* Do this so we don't send a face command for the client for
159 ns->current_x = 0; 98 * this face. Face 0 is sent to the client to say clear
160 ns->current_y = 0; 99 * face information.
100 */
101 faces_sent[0] = NS_FACESENT_FACE;
161 102
162 ns->sent_scroll=0; 103 // socket I/O is low priority
163 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!
164 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);
165 sl.buf=(unsigned char*)buf; 115 flush ();
166 sl.len=strlen((char*)buf); 116
167 Send_With_Handling(ns, &sl); 117#if 0//TODO
168#ifdef CS_LOGSTATS 118 socket_info.nconns++;
169 if (socket_info.nconns>cst_tot.max_conn) 119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
170 cst_tot.max_conn = socket_info.nconns; 120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
171 if (socket_info.nconns>cst_lst.max_conn)
172 cst_lst.max_conn = socket_info.nconns;
173#endif 121#endif
174} 122}
175 123
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}
176 145
177/** 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
178void init_ericserver(void) 148init_ericserver (void)
179{ 149{
180 struct sockaddr_in insock; 150 cst_tot.time_start = time (NULL);
181 struct protoent *protox; 151 cst_lst.time_start = time (NULL);
182 struct linger linger_opt;
183 152
184#ifdef WIN32 /* ***win32 - we init a windows socket */ 153 LOG (llevDebug, "Initialize new client/server data\n");
185 WSADATA w;
186 154
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
235 linger_opt.l_onoff = 0;
236 linger_opt.l_linger = 0;
237 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_LINGER,(char *) &linger_opt,
238 sizeof(struct linger))) {
239 LOG(llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror_local(errno));
240 }
241/* Would be nice to have an autoconf check for this. It appears that
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 {
251#ifdef WIN32
252 char tmp = 1;
253#else
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 }
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(); 155 read_client_images ();
289} 156}
290 157
291 158
292/******************************************************************************* 159/*******************************************************************************
293 * 160 *
294 * Start of functions dealing with freeing of the data. 161 * Start of functions dealing with freeing of the data.
295 * 162 *
296 ******************************************************************************/ 163 ******************************************************************************/
297 164
298/** Free's all the memory that ericserver allocates. */ 165/** Free's all the memory that ericserver allocates. */
166void
299void free_all_newserver(void) 167free_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{ 168{
315#ifdef WIN32 /* ***win32: closesocket in windows style */ 169 LOG (llevDebug, "Freeing all new client/server information.\n");
316 shutdown(ns->fd,SD_BOTH); 170 free_socket_images ();
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} 171}
335 172
336/** Sends the 'goodbye' command to the player, and closes connection. */ 173/** Sends the 'goodbye' command to the player, and closes connection. */
174void
337void final_free_player(player *pl) 175final_free_player (player *pl)
338{ 176{
339 cs_write_string(&pl->socket, "goodbye", 8);
340 free_newsocket(&pl->socket);
341 free_player(pl); 177 free_player (pl);
342} 178}
343 179
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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