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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.6 by root, Wed Aug 30 16:30:37 2006 UTC vs.
Revision 1.21 by root, Sat Dec 16 03:08:26 2006 UTC

1/*
2 * static char *rcsid_init_c =
3 * "$Id: init.C,v 1.6 2006/08/30 16:30:37 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_len = nrofpixmaps;
154 ns->outputbuffer.len=0; 96 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
155 ns->can_write=1; 97 if (!faces_sent)
156 ns->password_fails = 0; 98 fatal (OUT_OF_MEMORY);
157 99
158 ns->current_map = 0; 100 /* Do this so we don't send a face command for the client for
159 ns->current_x = 0; 101 * this face. Face 0 is sent to the client to say clear
160 ns->current_y = 0; 102 * face information.
161 ns->client[0] = 0; 103 */
162 ns->buggy_mapscroll = 0; 104 faces_sent[0] = NS_FACESENT_FACE;
163 105
164 ns->sent_scroll=0; 106 // socket I/O is low priority
165 ns->host=strdup_local(from_ip); 107 // we prefer to have the server run instead of handling client requests
108 socket_ev.prio (PE_PRIO_NORMAL + 1);
109 socket_ev.fd (fd);
110 socket_ev.poll (PE_R);
111
112 // command handling is even lower priority
113 // that way no client can monopolise the server
114 cmd_ev.prio (PE_PRIO_NORMAL + 2);
115
116 // initialisation done, kick it!
117
166 sprintf((char*)buf, "version %d %d %s\n", VERSION_CS,VERSION_SC, VERSION_INFO); 118 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
167 sl.buf=(unsigned char*)buf; 119 flush ();
168 sl.len=strlen((char*)buf); 120
169 Send_With_Handling(ns, &sl); 121#if 0//TODO
170#ifdef CS_LOGSTATS 122 socket_info.nconns++;
171 if (socket_info.nconns>cst_tot.max_conn) 123 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
172 cst_tot.max_conn = socket_info.nconns; 124 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
173 if (socket_info.nconns>cst_lst.max_conn)
174 cst_lst.max_conn = socket_info.nconns;
175#endif 125#endif
176} 126}
177 127
128client::~client ()
129{
130 if (pl)
131 pl->socket = 0;
132
133 if (fd >= 0)
134 close (fd), fd = -1;
135
136 free (stats.range), stats.range = 0;
137 free (stats.title), stats.title = 0;
138 free (host), host = 0;
139}
140
141void
142client::destroy ()
143{
144 status = Ns_Dead;
145 socket_ev.suspend ();
146 cmd_ev.suspend ();
147}
178 148
179/** This sets up the socket and reads all the image information into memory. */ 149/** This sets up the socket and reads all the image information into memory. */
150void
180void init_ericserver(void) 151init_ericserver (void)
181{ 152{
182 struct sockaddr_in insock; 153 cst_tot.time_start = time (NULL);
183 struct protoent *protox; 154 cst_lst.time_start = time (NULL);
184 struct linger linger_opt;
185 155
186#ifdef WIN32 /* ***win32 - we init a windows socket */ 156 LOG (llevDebug, "Initialize new client/server data\n");
187 WSADATA w;
188 157
189 socket_info.max_filedescriptor = 1; /* used in select, ignored in winsockets */
190 WSAStartup (0x0101,&w); /* this setup all socket stuff */
191 /* ill include no error tests here, winsocket 1.1 should always work */
192 /* except some old win95 versions without tcp/ip stack */
193#else /* non windows */
194
195#ifdef HAVE_SYSCONF
196 socket_info.max_filedescriptor = sysconf(_SC_OPEN_MAX);
197#else
198# ifdef HAVE_GETDTABLESIZE
199 socket_info.max_filedescriptor = getdtablesize();
200# else
201 "Unable to find usable function to get max filedescriptors";
202# endif
203#endif
204#endif /* win32 */
205
206 socket_info.timeout.tv_sec = 0;
207 socket_info.timeout.tv_usec = 0;
208 socket_info.nconns=0;
209
210#ifdef CS_LOGSTATS
211 memset(&cst_tot, 0, sizeof(CS_Stats));
212 memset(&cst_lst, 0, sizeof(CS_Stats));
213 cst_tot.time_start=time(NULL);
214 cst_lst.time_start=time(NULL);
215#endif
216
217 LOG(llevDebug,"Initialize new client/server data\n");
218 socket_info.nconns = 1;
219 init_sockets = (NewSocket *) malloc(sizeof(NewSocket));
220 init_sockets[0].faces_sent = NULL; /* unused */
221 socket_info.allocated_sockets=1;
222
223 protox = getprotobyname("tcp");
224 if (protox==NULL) {
225 LOG(llevError,"init_ericserver: Error getting protox\n");
226 return;
227 }
228 init_sockets[0].fd = socket(PF_INET, SOCK_STREAM, protox->p_proto);
229 if (init_sockets[0].fd == -1) {
230 LOG(llevError, "Cannot create socket: %s\n", strerror(errno));
231 exit(-1);
232 }
233 insock.sin_family = AF_INET;
234 insock.sin_port = htons(settings.csport);
235 insock.sin_addr.s_addr = htonl(INADDR_ANY);
236
237 linger_opt.l_onoff = 0;
238 linger_opt.l_linger = 0;
239 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_LINGER,(char *) &linger_opt,
240 sizeof(struct linger))) {
241 LOG(llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror(errno));
242 }
243/* Would be nice to have an autoconf check for this. It appears that
244 * these functions are both using the same calling syntax, just one
245 * of them needs extra valus passed.
246 */
247#if defined(__osf__) || defined(hpux) || defined(sgi) || defined(NeXT) || \
248 defined(__sun__) || defined(__linux__) || defined(SVR4) || \
249 defined(__FreeBSD__) || defined(__OpenBSD__) || \
250 defined(WIN32) /* ---win32 add this here */ || \
251 defined(__GNU__) /* HURD */
252 {
253#ifdef WIN32
254 char tmp = 1;
255#else
256 int tmp =1;
257#endif
258
259 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR, &tmp, sizeof(tmp))) {
260 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror(errno));
261 }
262 }
263#else
264 if(setsockopt(init_sockets[0].fd,SOL_SOCKET,SO_REUSEADDR,(char *)NULL,0)) {
265 LOG(llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror(errno));
266 }
267#endif
268
269 if (bind(init_sockets[0].fd,(struct sockaddr *)&insock,sizeof(insock)) == (-1)) {
270 LOG(llevError, "Cannot bind socket to port %d: %s\n", ntohs(insock.sin_port), strerror(errno));
271#ifdef WIN32 /* ***win32: close() -> closesocket() */
272 shutdown(init_sockets[0].fd,SD_BOTH);
273 closesocket(init_sockets[0].fd);
274#else
275 close(init_sockets[0].fd);
276#endif /* win32 */
277 exit(-1);
278 }
279 if (listen(init_sockets[0].fd,5) == (-1)) {
280 LOG(llevError, "Cannot listen on socket: %s\n", strerror(errno));
281#ifdef WIN32 /* ***win32: close() -> closesocket() */
282 shutdown(init_sockets[0].fd,SD_BOTH);
283 closesocket(init_sockets[0].fd);
284#else
285 close(init_sockets[0].fd);
286#endif /* win32 */
287 exit(-1);
288 }
289 init_sockets[0].status=Ns_Add;
290 read_client_images(); 158 read_client_images ();
291} 159}
292 160
293 161
294/******************************************************************************* 162/*******************************************************************************
295 * 163 *
296 * Start of functions dealing with freeing of the data. 164 * Start of functions dealing with freeing of the data.
297 * 165 *
298 ******************************************************************************/ 166 ******************************************************************************/
299 167
300/** Free's all the memory that ericserver allocates. */ 168/** Free's all the memory that ericserver allocates. */
169void
301void free_all_newserver(void) 170free_all_newserver (void)
302{
303 LOG(llevDebug,"Freeing all new client/server information.\n");
304 free_socket_images();
305 free(init_sockets);
306}
307
308/**
309 * Frees a socket.
310 * Basically, all we need to do here is free all data structures that
311 * might be associated with the socket. It is up to the caller to
312 * update the list
313 */
314
315void free_newsocket(NewSocket *ns)
316{ 171{
317#ifdef WIN32 /* ***win32: closesocket in windows style */ 172 LOG (llevDebug, "Freeing all new client/server information.\n");
318 shutdown(ns->fd,SD_BOTH); 173 free_socket_images ();
319 if (closesocket(ns->fd)) {
320#else
321 if (close(ns->fd)) {
322#endif /* win32 */
323
324#ifdef ESRV_DEBUG
325 LOG(llevDebug,"Error closing socket %d\n", ns->fd);
326#endif
327 }
328 if (ns->stats.range)
329 free(ns->stats.range);
330 if (ns->stats.title)
331 free(ns->stats.title);
332 if (ns->comment)
333 free(ns->comment);
334 free(ns->host);
335 free(ns->inbuf.buf);
336} 174}
337 175
338/** Sends the 'goodbye' command to the player, and closes connection. */ 176/** Sends the 'goodbye' command to the player, and closes connection. */
177void
339void final_free_player(player *pl) 178final_free_player (player *pl)
340{ 179{
341 cs_write_string(&pl->socket, "goodbye", 8);
342 free_newsocket(&pl->socket);
343 free_player(pl); 180 free_player (pl);
344} 181}
345 182
183bool
184add_client (int fd, const char *peername)
185{
186 if (checkbanned (NULL, peername))
187 {
188 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
189 return false;
190 }
191 else
192 {
193 client *ns = new client (dup (fd), peername);
194 clients.push_back (ns);
195 return true;
196 }
197}
198

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