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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 1.16 by root, Thu Dec 14 04:30:33 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))
73{ 62{
74 SockList sl; 63 {
75 char buf[256]; 64 struct linger linger_opt;
65
66 linger_opt.l_onoff = 0;
67 linger_opt.l_linger = 0;
68
69 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
70 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
71 }
72
73 {
76 int bufsize = 65535; /*Supposed absolute upper limit */ 74 int bufsize = 65535; /*Supposed absolute upper limit */
77 int oldbufsize; 75 int oldbufsize;
78 int buflen = sizeof (int); 76 int buflen = sizeof (int);
79 77
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) 78 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
87 {
88 LOG (llevError, "InitConnection: Error on fcntl.\n"); 79 LOG (llevError, "InitConnection: Error on fcntl.\n");
89 }
90#endif /* end win32 */
91 80
92 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 81 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
93 oldbufsize = 0; 82 oldbufsize = 0;
83
94 if (oldbufsize < bufsize) 84 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))) 85 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); 86 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
102 } 87
103 }
104 buflen = sizeof (oldbufsize); 88 buflen = sizeof (oldbufsize);
105 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 89 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
106#ifdef ESRV_DEBUG 90 }
107 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
108#endif
109 91
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; 92 mapmode = Map0Cmd;
117 ns->darkness = 1; 93 darkness = 1;
118 ns->status = Ns_Add; 94 status = Ns_Add;
119 ns->comment = NULL;
120 ns->old_mode = (Old_Mode) 0;
121 ns->mapx = 11; 95 mapx = 11;
122 ns->mapy = 11; 96 mapy = 11;
123 ns->newmapcmd = 0;
124 ns->itemcmd = 1; /* Default is version item1 command */ 97 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 98
136 /* we should really do some checking here - if total clients overflows 99 faces_sent_len = nrofpixmaps;
137 * we need to do something more intelligent, because client id's will start 100 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
138 * duplicating (not likely in normal cases, but malicous attacks that 101 if (!faces_sent)
139 * just open and close connections could get this total up. 102 fatal (OUT_OF_MEMORY);
140 */ 103
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 104 /* 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 105 * this face. Face 0 is sent to the client to say clear
154 * face information. 106 * face information.
155 */ 107 */
156 ns->faces_sent[0] = NS_FACESENT_FACE; 108 faces_sent[0] = NS_FACESENT_FACE;
157 109
158 ns->outputbuffer.start = 0;
159 ns->outputbuffer.len = 0;
160 ns->can_write = 1; 110 can_write = 1;
161 ns->password_fails = 0;
162 111
163 ns->current_map = 0; 112 // initialisation done, kick it!
164 ns->current_x = 0;
165 ns->current_y = 0;
166 ns->client[0] = 0;
167 ns->buggy_mapscroll = 0;
168 113
169 ns->sent_scroll = 0; 114 {
170 ns->host = strdup_local (from_ip); 115 packet sl;
171 sprintf ((char *) buf, "version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 116 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
172 sl.buf = (unsigned char *) buf; 117 send_packet (sl);
173 sl.len = strlen ((char *) buf); 118 }
174 Send_With_Handling (ns, &sl); 119
175#ifdef CS_LOGSTATS 120#if 0//TODO
176 if (socket_info.nconns > cst_tot.max_conn) 121 socket_info.nconns++;
177 cst_tot.max_conn = socket_info.nconns; 122 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
178 if (socket_info.nconns > cst_lst.max_conn) 123 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
179 cst_lst.max_conn = socket_info.nconns;
180#endif 124#endif
181} 125}
182 126
127client_socket::~client_socket ()
128{
129 status = Ns_Dead;
130}
183 131
184/** This sets up the socket and reads all the image information into memory. */ 132/** This sets up the socket and reads all the image information into memory. */
185void 133void
186init_ericserver (void) 134init_ericserver (void)
187{ 135{
188 struct sockaddr_in insock; 136 struct sockaddr_in insock;
189 struct protoent *protox;
190 struct linger linger_opt; 137 struct linger linger_opt;
191 138
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)); 139 memset (&cst_tot, 0, sizeof (CS_Stats));
218 memset (&cst_lst, 0, sizeof (CS_Stats)); 140 memset (&cst_lst, 0, sizeof (CS_Stats));
219 cst_tot.time_start = time (NULL); 141 cst_tot.time_start = time (NULL);
220 cst_lst.time_start = time (NULL); 142 cst_lst.time_start = time (NULL);
221#endif
222 143
223 LOG (llevDebug, "Initialize new client/server data\n"); 144 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;
228 145
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 (); 146 read_client_images ();
304} 147}
305 148
306 149
307/******************************************************************************* 150/*******************************************************************************
… …
314void 157void
315free_all_newserver (void) 158free_all_newserver (void)
316{ 159{
317 LOG (llevDebug, "Freeing all new client/server information.\n"); 160 LOG (llevDebug, "Freeing all new client/server information.\n");
318 free_socket_images (); 161 free_socket_images ();
319 free (init_sockets);
320} 162}
321 163
322/** 164/**
323 * Frees a socket. 165 * Frees a socket.
324 * Basically, all we need to do here is free all data structures that 166 * 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 167 * might be associated with the socket. It is up to the caller to
326 * update the list 168 * update the list
327 */ 169 */
328 170
329void 171void
330free_newsocket (NewSocket * ns) 172free_newsocket (client_socket *ns)
331{ 173{
332#ifdef WIN32 /* ***win32: closesocket in windows style */ 174 if (ns->fd >= 0)
333 shutdown (ns->fd, SD_BOTH);
334 if (closesocket (ns->fd))
335 {
336#else
337 if (close (ns->fd)) 175 close (ns->fd);
338 {
339#endif /* win32 */
340 176
341#ifdef ESRV_DEBUG
342 LOG (llevDebug, "Error closing socket %d\n", ns->fd);
343#endif
344 }
345 if (ns->stats.range) 177 if (ns->stats.range)
346 free (ns->stats.range); 178 free (ns->stats.range);
179
347 if (ns->stats.title) 180 if (ns->stats.title)
348 free (ns->stats.title); 181 free (ns->stats.title);
349 if (ns->comment) 182
350 free (ns->comment);
351 free (ns->host); 183 free (ns->host);
352 free (ns->inbuf.buf); 184
185 ns->fd = -1;
186 ns->stats.range = 0;
187 ns->stats.title = 0;
188 ns->host = 0;
353} 189}
354 190
355/** Sends the 'goodbye' command to the player, and closes connection. */ 191/** Sends the 'goodbye' command to the player, and closes connection. */
356void 192void
357final_free_player (player *pl) 193final_free_player (player *pl)
358{ 194{
359 cs_write_string (&pl->socket, "goodbye", 8); 195 pl->socket->send_packet ("goodbye");
360 free_newsocket (&pl->socket); 196 free_newsocket (pl->socket);
361 free_player (pl); 197 free_player (pl);
362} 198}
199
200bool
201add_client_socket (int fd, const char *peername)
202{
203 if (checkbanned (NULL, peername))
204 {
205 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
206 return false;
207 }
208 else
209 {
210 client_socket *ns = new client_socket (dup (fd), peername);
211 client_sockets.push_back (ns);
212 return true;
213 }
214}
215

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