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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 1.18 by root, Thu Dec 14 21:46:34 2006 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
10 Copyright (C) 2001 Mark Wedel 4 Copyright (C) 2001 Mark Wedel
11 Copyright (C) 1992 Frank Tore Johansen 5 Copyright (C) 1992 Frank Tore Johansen
… …
22 16
23 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
24 along with this program; if not, write to the Free Software 18 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 20
27 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>
28*/ 22*/
29 23
30/** 24/**
31 * \file 25 * \file
32 * Socket general functions 26 * Socket general functions
… …
38 * The reading of data is handled in ericserver.c 32 * The reading of data is handled in ericserver.c
39 */ 33 */
40 34
41 35
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>
51# include <netdb.h> 42#include <netdb.h>
52#endif /* win32 */
53 43
54#ifdef HAVE_UNISTD_H 44#ifdef HAVE_UNISTD_H
55# include <unistd.h> 45# include <unistd.h>
56#endif 46#endif
57 47
58#ifdef HAVE_ARPA_INET_H 48#ifdef HAVE_ARPA_INET_H
59# include <arpa/inet.h> 49# include <arpa/inet.h>
60#endif 50#endif
61#include <newserver.h> 51#include <newserver.h>
62 52
63Socket_Info socket_info; 53sockvec client_sockets;
64NewSocket *init_sockets;
65 54
66/** 55/**
67 * Initializes a connection. Really, it just sets up the data structure, 56 * Initializes a connection. Really, it just sets up the data structure,
68 * socket setup is handled elsewhere. We do send a version to the 57 * socket setup is handled elsewhere. We do send a version to the
69 * client. 58 * client.
70 */ 59 */
71void 60client_socket::client_socket (int fd, const char *peername)
72InitConnection (NewSocket * ns, const char *from_ip) 61: fd (fd), host (strdup (peername)),
62 socket_ev (this, &client_socket::socket_cb)
73{ 63{
74 SockList sl; 64 {
75 char buf[256]; 65 struct linger linger_opt;
66
67 linger_opt.l_onoff = 0;
68 linger_opt.l_linger = 0;
69
70 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
71 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
72 }
73
74 {
76 int bufsize = 65535; /*Supposed absolute upper limit */ 75 int bufsize = 65535; /*Supposed absolute upper limit */
77 int oldbufsize; 76 int oldbufsize;
78 int buflen = sizeof (int); 77 int buflen = sizeof (int);
79 78
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) 79 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
87 {
88 LOG (llevError, "InitConnection: Error on fcntl.\n"); 80 LOG (llevError, "InitConnection: Error on fcntl.\n");
89 }
90#endif /* end win32 */
91 81
92 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 82 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
93 oldbufsize = 0; 83 oldbufsize = 0;
84
94 if (oldbufsize < bufsize) 85 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))) 86 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); 87 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
102 } 88
103 }
104 buflen = sizeof (oldbufsize); 89 buflen = sizeof (oldbufsize);
105 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 90 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
106#ifdef ESRV_DEBUG 91 }
107 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
108#endif
109 92
110 ns->faceset = 0;
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; 93 mapmode = Map0Cmd;
117 ns->darkness = 1; 94 darkness = 1;
118 ns->status = Ns_Add; 95 status = Ns_Add;
119 ns->comment = NULL;
120 ns->old_mode = (Old_Mode) 0;
121 ns->mapx = 11; 96 mapx = 11;
122 ns->mapy = 11; 97 mapy = 11;
123 ns->newmapcmd = 0;
124 ns->itemcmd = 1; /* Default is version item1 command */ 98 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 99
136 /* we should really do some checking here - if total clients overflows 100 faces_sent_len = nrofpixmaps;
137 * we need to do something more intelligent, because client id's will start 101 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
138 * duplicating (not likely in normal cases, but malicous attacks that 102 if (!faces_sent)
139 * just open and close connections could get this total up. 103 fatal (OUT_OF_MEMORY);
140 */ 104
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 105 /* 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 106 * this face. Face 0 is sent to the client to say clear
154 * face information. 107 * face information.
155 */ 108 */
156 ns->faces_sent[0] = NS_FACESENT_FACE; 109 faces_sent[0] = NS_FACESENT_FACE;
157 110
158 ns->outputbuffer.start = 0; 111 socket_ev.fd (fd);
159 ns->outputbuffer.len = 0;
160 ns->can_write = 1;
161 ns->password_fails = 0;
162 112
163 ns->current_map = 0; 113 // initialisation done, kick it!
164 ns->current_x = 0;
165 ns->current_y = 0;
166 ns->client[0] = 0;
167 ns->buggy_mapscroll = 0;
168 114
169 ns->sent_scroll = 0; 115 {
170 ns->host = strdup_local (from_ip); 116 packet sl;
171 sprintf ((char *) buf, "version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 117 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
172 sl.buf = (unsigned char *) buf; 118 send_packet (sl);
173 sl.len = strlen ((char *) buf); 119 flush ();
174 Send_With_Handling (ns, &sl); 120 }
175#ifdef CS_LOGSTATS 121
176 if (socket_info.nconns > cst_tot.max_conn) 122#if 0//TODO
177 cst_tot.max_conn = socket_info.nconns; 123 socket_info.nconns++;
178 if (socket_info.nconns > cst_lst.max_conn) 124 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
179 cst_lst.max_conn = socket_info.nconns; 125 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
180#endif 126#endif
181} 127}
182 128
129client_socket::~client_socket ()
130{
131 status = Ns_Dead;
132}
183 133
184/** This sets up the socket and reads all the image information into memory. */ 134/** This sets up the socket and reads all the image information into memory. */
185void 135void
186init_ericserver (void) 136init_ericserver (void)
187{ 137{
188 struct sockaddr_in insock; 138 struct sockaddr_in insock;
189 struct protoent *protox;
190 struct linger linger_opt; 139 struct linger linger_opt;
191 140
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)); 141 memset (&cst_tot, 0, sizeof (CS_Stats));
218 memset (&cst_lst, 0, sizeof (CS_Stats)); 142 memset (&cst_lst, 0, sizeof (CS_Stats));
219 cst_tot.time_start = time (NULL); 143 cst_tot.time_start = time (NULL);
220 cst_lst.time_start = time (NULL); 144 cst_lst.time_start = time (NULL);
221#endif
222 145
223 LOG (llevDebug, "Initialize new client/server data\n"); 146 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;
228 147
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 (); 148 read_client_images ();
304} 149}
305 150
306 151
307/******************************************************************************* 152/*******************************************************************************
… …
314void 159void
315free_all_newserver (void) 160free_all_newserver (void)
316{ 161{
317 LOG (llevDebug, "Freeing all new client/server information.\n"); 162 LOG (llevDebug, "Freeing all new client/server information.\n");
318 free_socket_images (); 163 free_socket_images ();
319 free (init_sockets);
320} 164}
321 165
322/** 166/**
323 * Frees a socket. 167 * Frees a socket.
324 * Basically, all we need to do here is free all data structures that 168 * 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 169 * might be associated with the socket. It is up to the caller to
326 * update the list 170 * update the list
327 */ 171 */
328 172
329void 173void
330free_newsocket (NewSocket * ns) 174free_newsocket (client_socket *ns)
331{ 175{
332#ifdef WIN32 /* ***win32: closesocket in windows style */ 176 if (ns->fd >= 0)
333 shutdown (ns->fd, SD_BOTH);
334 if (closesocket (ns->fd))
335 {
336#else
337 if (close (ns->fd)) 177 close (ns->fd);
338 {
339#endif /* win32 */
340 178
341#ifdef ESRV_DEBUG
342 LOG (llevDebug, "Error closing socket %d\n", ns->fd);
343#endif
344 }
345 if (ns->stats.range) 179 if (ns->stats.range)
346 free (ns->stats.range); 180 free (ns->stats.range);
181
347 if (ns->stats.title) 182 if (ns->stats.title)
348 free (ns->stats.title); 183 free (ns->stats.title);
349 if (ns->comment) 184
350 free (ns->comment);
351 free (ns->host); 185 free (ns->host);
352 free (ns->inbuf.buf); 186
187 ns->fd = -1;
188 ns->stats.range = 0;
189 ns->stats.title = 0;
190 ns->host = 0;
353} 191}
354 192
355/** Sends the 'goodbye' command to the player, and closes connection. */ 193/** Sends the 'goodbye' command to the player, and closes connection. */
356void 194void
357final_free_player (player *pl) 195final_free_player (player *pl)
358{ 196{
359 cs_write_string (&pl->socket, "goodbye", 8); 197 pl->socket->send_packet ("goodbye");
360 free_newsocket (&pl->socket); 198 free_newsocket (pl->socket);
361 free_player (pl); 199 free_player (pl);
362} 200}
201
202bool
203add_client_socket (int fd, const char *peername)
204{
205 if (checkbanned (NULL, peername))
206 {
207 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
208 return false;
209 }
210 else
211 {
212 client_socket *ns = new client_socket (dup (fd), peername);
213 client_sockets.push_back (ns);
214 return true;
215 }
216}
217

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