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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.2 by root, Thu Aug 17 20:23:32 2006 UTC vs.
Revision 1.19 by root, Thu Dec 14 22:45:41 2006 UTC

1/*
2 * static char *rcsid_init_c =
3 * "$Id: init.C,v 1.2 2006/08/17 20:23:32 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
56
57#ifdef HAVE_ARPA_INET_H
58#include <arpa/inet.h> 45#include <arpa/inet.h>
59#endif
60#include <newserver.h> 46#include <newserver.h>
61 47
62Socket_Info socket_info; 48sockvec client_sockets;
63NewSocket *init_sockets;
64 49
65/** 50/**
66 * Initializes a connection. Really, it just sets up the data structure, 51 * Initializes a connection. Really, it just sets up the data structure,
67 * socket setup is handled elsewhere. We do send a version to the 52 * socket setup is handled elsewhere. We do send a version to the
68 * client. 53 * client.
69 */ 54 */
70void InitConnection(NewSocket *ns, const char *from_ip) 55client_socket::client_socket (int fd, const char *peername)
56: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client_socket::socket_cb)
71{ 58{
72 SockList sl; 59 {
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
130 /* we should really do some checking here - if total clients overflows
131 * we need to do something more intelligent, because client id's will start
132 * duplicating (not likely in normal cases, but malicous attacks that
133 * just open and close connections could get this total up.
134 */
135 ns->inbuf.len=0;
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
152 ns->outputbuffer.start=0;
153 ns->outputbuffer.len=0;
154 ns->can_write=1;
155 ns->password_fails = 0;
156
157 ns->current_map = 0;
158 ns->current_x = 0;
159 ns->current_y = 0;
160
161 ns->sent_scroll=0;
162 ns->host=strdup_local(from_ip);
163 sprintf((char*)buf, "version %d %d %s\n", VERSION_CS,VERSION_SC, VERSION_INFO);
164 sl.buf=(unsigned char*)buf;
165 sl.len=strlen((char*)buf);
166 Send_With_Handling(ns, &sl);
167#ifdef CS_LOGSTATS
168 if (socket_info.nconns>cst_tot.max_conn)
169 cst_tot.max_conn = socket_info.nconns;
170 if (socket_info.nconns>cst_lst.max_conn)
171 cst_lst.max_conn = socket_info.nconns;
172#endif
173}
174
175
176/** This sets up the socket and reads all the image information into memory. */
177void init_ericserver(void)
178{
179 struct sockaddr_in insock;
180 struct protoent *protox;
181 struct linger linger_opt; 60 struct linger linger_opt;
182
183#ifdef WIN32 /* ***win32 - we init a windows socket */
184 WSADATA w;
185
186 socket_info.max_filedescriptor = 1; /* used in select, ignored in winsockets */
187 WSAStartup (0x0101,&w); /* this setup all socket stuff */
188 /* ill include no error tests here, winsocket 1.1 should always work */
189 /* except some old win95 versions without tcp/ip stack */
190#else /* non windows */
191
192#ifdef HAVE_SYSCONF
193 socket_info.max_filedescriptor = sysconf(_SC_OPEN_MAX);
194#else
195# ifdef HAVE_GETDTABLESIZE
196 socket_info.max_filedescriptor = getdtablesize();
197# else
198 "Unable to find usable function to get max filedescriptors";
199# endif
200#endif
201#endif /* win32 */
202
203 socket_info.timeout.tv_sec = 0;
204 socket_info.timeout.tv_usec = 0;
205 socket_info.nconns=0;
206
207#ifdef CS_LOGSTATS
208 memset(&cst_tot, 0, sizeof(CS_Stats));
209 memset(&cst_lst, 0, sizeof(CS_Stats));
210 cst_tot.time_start=time(NULL);
211 cst_lst.time_start=time(NULL);
212#endif
213
214 LOG(llevDebug,"Initialize new client/server data\n");
215 socket_info.nconns = 1;
216 init_sockets = (NewSocket *) malloc(sizeof(NewSocket));
217 init_sockets[0].faces_sent = NULL; /* unused */
218 socket_info.allocated_sockets=1;
219
220 protox = getprotobyname("tcp");
221 if (protox==NULL) {
222 LOG(llevError,"init_ericserver: Error getting protox\n");
223 return;
224 }
225 init_sockets[0].fd = socket(PF_INET, SOCK_STREAM, protox->p_proto);
226 if (init_sockets[0].fd == -1) {
227 LOG(llevError, "Cannot create socket: %s\n", strerror_local(errno));
228 exit(-1);
229 }
230 insock.sin_family = AF_INET;
231 insock.sin_port = htons(settings.csport);
232 insock.sin_addr.s_addr = htonl(INADDR_ANY);
233 61
234 linger_opt.l_onoff = 0; 62 linger_opt.l_onoff = 0;
235 linger_opt.l_linger = 0; 63 linger_opt.l_linger = 0;
236 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_LINGER,(char *) &linger_opt, 64
237 sizeof(struct linger))) { 65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
238 LOG(llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror_local(errno)); 66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
239 } 67 }
240/* Would be nice to have an autoconf check for this. It appears that 68
241 * these functions are both using the same calling syntax, just one
242 * of them needs extra valus passed.
243 */
244#if defined(__osf__) || defined(hpux) || defined(sgi) || defined(NeXT) || \
245 defined(__sun__) || defined(__linux__) || defined(SVR4) || \
246 defined(__FreeBSD__) || defined(__OpenBSD__) || \
247 defined(WIN32) /* ---win32 add this here */ || \
248 defined(__GNU__) /* HURD */
249 { 69 {
250#ifdef WIN32 70 int bufsize = 65535; /*Supposed absolute upper limit */
251 char tmp = 1; 71 int oldbufsize;
252#else 72 int buflen = sizeof (int);
253 int tmp =1; 73
74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
75 LOG (llevError, "InitConnection: Error on fcntl.\n");
76
77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
78 oldbufsize = 0;
79
80 if (oldbufsize < bufsize)
81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
82 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
83
84 buflen = sizeof (oldbufsize);
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
86 }
87
88 mapmode = Map0Cmd;
89 darkness = 1;
90 status = Ns_Add;
91 mapx = 11;
92 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */
94
95 faces_sent_len = nrofpixmaps;
96 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
97 if (!faces_sent)
98 fatal (OUT_OF_MEMORY);
99
100 /* Do this so we don't send a face command for the client for
101 * this face. Face 0 is sent to the client to say clear
102 * face information.
103 */
104 faces_sent[0] = NS_FACESENT_FACE;
105
106 socket_ev.fd (fd);
107
108 // initialisation done, kick it!
109
110 {
111 packet sl;
112 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
113 send_packet (sl);
114 flush ();
115 }
116
117#if 0//TODO
118 socket_info.nconns++;
119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
254#endif 121#endif
122}
255 123
256 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR, &tmp, sizeof(tmp))) { 124client_socket::~client_socket ()
257 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror_local(errno)); 125{
258 } 126 status = Ns_Dead;
259 } 127}
260#else
261 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR,(char *)NULL,0)) {
262 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror_local(errno));
263 }
264#endif
265 128
266 if (bind(init_sockets[0].fd,(struct sockaddr *)&insock,sizeof(insock)) == (-1)) { 129/** This sets up the socket and reads all the image information into memory. */
267 LOG(llevError, "Cannot bind socket to port %d: %s\n", ntohs(insock.sin_port), strerror_local(errno)); 130void
268#ifdef WIN32 /* ***win32: close() -> closesocket() */ 131init_ericserver (void)
269 shutdown(init_sockets[0].fd,SD_BOTH); 132{
270 closesocket(init_sockets[0].fd); 133 struct sockaddr_in insock;
271#else 134 struct linger linger_opt;
272 close(init_sockets[0].fd); 135
273#endif /* win32 */ 136 memset (&cst_tot, 0, sizeof (CS_Stats));
274 exit(-1); 137 memset (&cst_lst, 0, sizeof (CS_Stats));
275 } 138 cst_tot.time_start = time (NULL);
276 if (listen(init_sockets[0].fd,5) == (-1)) { 139 cst_lst.time_start = time (NULL);
277 LOG(llevError, "Cannot listen on socket: %s\n", strerror_local(errno)); 140
278#ifdef WIN32 /* ***win32: close() -> closesocket() */ 141 LOG (llevDebug, "Initialize new client/server data\n");
279 shutdown(init_sockets[0].fd,SD_BOTH); 142
280 closesocket(init_sockets[0].fd);
281#else
282 close(init_sockets[0].fd);
283#endif /* win32 */
284 exit(-1);
285 }
286 init_sockets[0].status=Ns_Add;
287 read_client_images(); 143 read_client_images ();
288} 144}
289 145
290 146
291/******************************************************************************* 147/*******************************************************************************
292 * 148 *
293 * Start of functions dealing with freeing of the data. 149 * Start of functions dealing with freeing of the data.
294 * 150 *
295 ******************************************************************************/ 151 ******************************************************************************/
296 152
297/** Free's all the memory that ericserver allocates. */ 153/** Free's all the memory that ericserver allocates. */
154void
298void free_all_newserver(void) 155free_all_newserver (void)
299{ 156{
300 LOG(llevDebug,"Freeing all new client/server information.\n"); 157 LOG (llevDebug, "Freeing all new client/server information.\n");
301 free_socket_images(); 158 free_socket_images ();
302 free(init_sockets);
303} 159}
304 160
305/** 161/**
306 * Frees a socket. 162 * Frees a socket.
307 * Basically, all we need to do here is free all data structures that 163 * Basically, all we need to do here is free all data structures that
308 * might be associated with the socket. It is up to the caller to 164 * might be associated with the socket. It is up to the caller to
309 * update the list 165 * update the list
310 */ 166 */
311 167
168void
312void free_newsocket(NewSocket *ns) 169free_newsocket (client_socket *ns)
313{ 170{
314#ifdef WIN32 /* ***win32: closesocket in windows style */ 171 if (ns->fd >= 0)
315 shutdown(ns->fd,SD_BOTH);
316 if (closesocket(ns->fd)) {
317#else
318 if (close(ns->fd)) { 172 close (ns->fd);
319#endif /* win32 */
320 173
321#ifdef ESRV_DEBUG 174 if (ns->stats.range)
322 LOG(llevDebug,"Error closing socket %d\n", ns->fd); 175 free (ns->stats.range);
323#endif 176
177 if (ns->stats.title)
178 free (ns->stats.title);
179
180 free (ns->host);
181
182 ns->fd = -1;
183 ns->stats.range = 0;
184 ns->stats.title = 0;
185 ns->host = 0;
186}
187
188/** Sends the 'goodbye' command to the player, and closes connection. */
189void
190final_free_player (player *pl)
191{
192 pl->socket->send_packet ("goodbye");
193 free_newsocket (pl->socket);
194 free_player (pl);
195}
196
197bool
198add_client_socket (int fd, const char *peername)
199{
200 if (checkbanned (NULL, peername))
201 {
202 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
203 return false;
324 } 204 }
325 if (ns->stats.range) 205 else
326 free(ns->stats.range); 206 {
327 if (ns->stats.title) 207 client_socket *ns = new client_socket (dup (fd), peername);
328 free(ns->stats.title); 208 client_sockets.push_back (ns);
329 if (ns->comment) 209 return true;
330 free(ns->comment); 210 }
331 free(ns->host);
332 free(ns->inbuf.buf);
333} 211}
334 212
335/** Sends the 'goodbye' command to the player, and closes connection. */
336void final_free_player(player *pl)
337{
338 cs_write_string(&pl->socket, "goodbye", 8);
339 free_newsocket(&pl->socket);
340 free_player(pl);
341}
342

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