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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.10 by pippijn, Mon Dec 11 19:46:47 2006 UTC vs.
Revision 1.22 by root, Sat Dec 16 21:40:26 2006 UTC

… …
32 * The reading of data is handled in ericserver.c 32 * The reading of data is handled in ericserver.c
33 */ 33 */
34 34
35 35
36#include <global.h> 36#include <global.h>
37#ifndef __CEXTRACT__
38# include <sproto.h> 37#include <sproto.h>
39#endif
40#include <sys/types.h> 38#include <sys/types.h>
41#include <sys/time.h> 39#include <sys/time.h>
42#include <sys/socket.h> 40#include <sys/socket.h>
43#include <netinet/in.h> 41#include <netinet/in.h>
44#include <netdb.h> 42#include <netdb.h>
45 43
46#ifdef HAVE_UNISTD_H
47# include <unistd.h> 44#include <unistd.h>
48#endif 45#include <arpa/inet.h>
49 46
50#ifdef HAVE_ARPA_INET_H 47sockvec clients;
51# include <arpa/inet.h>
52#endif
53#include <newserver.h>
54
55Socket_Info socket_info;
56NewSocket *init_sockets;
57 48
58/** 49/**
59 * Initializes a connection. Really, it just sets up the data structure, 50 * Initializes a connection. Really, it just sets up the data structure,
60 * 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
61 * client. 52 * client.
62 */ 53 */
63void 54client::client (int fd, const char *peername)
64InitConnection (NewSocket * ns, const char *from_ip) 55: fd (fd), host (strdup (peername)),
56 socket_ev (this, &client::socket_cb),
57 cmd_ev (this, &client::cmd_cb)
65{ 58{
66 SockList sl; 59 {
67 char buf[256]; 60 struct linger linger_opt;
68 int bufsize = 65535; /*Supposed absolute upper limit */
69 int oldbufsize;
70 int buflen = sizeof (int);
71 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 {
70 int bufsize = 65535; /*Supposed absolute upper limit */
71 int oldbufsize;
72 int buflen = sizeof (int);
73
72 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
73 {
74 LOG (llevError, "InitConnection: Error on fcntl.\n"); 75 LOG (llevError, "InitConnection: Error on fcntl.\n");
75 }
76 76
77 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
78 oldbufsize = 0; 78 oldbufsize = 0;
79 if (oldbufsize < bufsize)
80 {
81#ifdef ESRV_DEBUG
82 LOG (llevDebug, "Default buffer size was %d bytes, will reset it to %d\n", oldbufsize, bufsize);
83#endif
84 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
85 {
86 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
87 }
88 }
89 buflen = sizeof (oldbufsize);
90 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
91#ifdef ESRV_DEBUG
92 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
93#endif
94 79
95 ns->faceset = 0; 80 if (oldbufsize < bufsize)
96 ns->facecache = 0; 81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
97 ns->image2 = 0; 82 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
98 ns->sound = 0;
99 ns->exp64 = 0;
100 ns->monitor_spells = 0;
101 ns->mapmode = Map0Cmd;
102 ns->darkness = 1;
103 ns->status = Ns_Add;
104 ns->mapx = 11;
105 ns->mapy = 11;
106 ns->newmapcmd = 0;
107 ns->itemcmd = 1; /* Default is version item1 command */
108 ns->ext_mapinfos = 0; /*extendedmapinfo datas */
109 ns->EMI_smooth = 0;
110 ns->look_position = 0;
111 ns->update_look = 0;
112 ns->has_readable_type = 0;
113 ns->supported_readables = 0;
114 ns->monitor_spells = 0;
115 ns->mapinfocmd = 0;
116 ns->extcmd = 0;
117 ns->extmap = 0;
118 83
119 /* we should really do some checking here - if total clients overflows 84 buflen = sizeof (oldbufsize);
120 * we need to do something more intelligent, because client id's will start 85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
121 * duplicating (not likely in normal cases, but malicous attacks that 86 }
122 * just open and close connections could get this total up. 87
123 */ 88 mapmode = Map0Cmd;
124 ns->inbuf.len = 0; 89 darkness = 1;
125 ns->inbuf.buf = (unsigned char *) malloc (sizeof (unsigned char) * MAXSOCKBUF); 90 status = Ns_Add;
126 /* Basic initialization. Needed because we do a check in 91 mapx = 11;
127 * HandleClient for oldsocketmode without checking the 92 mapy = 11;
128 * length of data. 93 itemcmd = 1; /* Default is version item1 command */
129 */ 94
130 memset (ns->inbuf.buf, 0, sizeof (unsigned char) * MAXSOCKBUF); 95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
131 memset (&ns->lastmap, 0, sizeof (struct Map)); 96
132 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent));
133 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent));
134 memset (&ns->stats, 0, sizeof (struct statsinfo));
135 /* Do this so we don't send a face command for the client for 97 /* Do this so we don't send a face command for the client for
136 * this face. Face 0 is sent to the client to say clear 98 * this face. Face 0 is sent to the client to say clear
137 * face information. 99 * face information.
138 */ 100 */
139 ns->faces_sent[0] = NS_FACESENT_FACE; 101 faces_sent[0] = NS_FACESENT_FACE;
140 102
141 ns->outputbuffer.start = 0; 103 // socket I/O is low priority
142 ns->outputbuffer.len = 0; 104 // we prefer to have the server run instead of handling client requests
143 ns->can_write = 1; 105 socket_ev.prio (PE_PRIO_NORMAL + 1);
144 ns->password_fails = 0; 106 socket_ev.fd (fd);
107 socket_ev.poll (PE_R);
145 108
146 ns->current_map = 0; 109 // command handling is even lower priority
147 ns->current_x = 0; 110 // that way no client can monopolise the server
148 ns->current_y = 0; 111 cmd_ev.prio (PE_PRIO_NORMAL + 2);
149 ns->client[0] = 0;
150 ns->buggy_mapscroll = 0;
151 112
152 ns->sent_scroll = 0; 113 // initialisation done, kick it!
153 ns->host = strdup_local (from_ip);
154 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);
155 sl.buf = (unsigned char *) buf; 115 flush ();
156 sl.len = strlen ((char *) buf); 116
157 Send_With_Handling (ns, &sl); 117#if 0//TODO
158#ifdef CS_LOGSTATS 118 socket_info.nconns++;
159 if (socket_info.nconns > cst_tot.max_conn) 119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
160 cst_tot.max_conn = socket_info.nconns; 120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
161 if (socket_info.nconns > cst_lst.max_conn)
162 cst_lst.max_conn = socket_info.nconns;
163#endif 121#endif
164} 122}
165 123
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}
166 145
167/** 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. */
168void 147void
169init_ericserver (void) 148init_ericserver (void)
170{ 149{
171 struct sockaddr_in insock;
172 struct protoent *protox;
173 struct linger linger_opt;
174
175#ifdef HAVE_SYSCONF
176 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
177#else
178# ifdef HAVE_GETDTABLESIZE
179 socket_info.max_filedescriptor = getdtablesize ();
180# else
181 "Unable to find usable function to get max filedescriptors";
182# endif
183#endif
184
185 socket_info.timeout.tv_sec = 0;
186 socket_info.timeout.tv_usec = 0;
187 socket_info.nconns = 0;
188
189#ifdef CS_LOGSTATS
190 memset (&cst_tot, 0, sizeof (CS_Stats));
191 memset (&cst_lst, 0, sizeof (CS_Stats));
192 cst_tot.time_start = time (NULL); 150 cst_tot.time_start = time (NULL);
193 cst_lst.time_start = time (NULL); 151 cst_lst.time_start = time (NULL);
194#endif
195 152
196 LOG (llevDebug, "Initialize new client/server data\n"); 153 LOG (llevDebug, "Initialize new client/server data\n");
197 socket_info.nconns = 1;
198 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
199 init_sockets[0].faces_sent = NULL; /* unused */
200 socket_info.allocated_sockets = 1;
201 154
202 protox = getprotobyname ("tcp");
203 if (protox == NULL)
204 {
205 LOG (llevError, "init_ericserver: Error getting protox\n");
206 return;
207 }
208 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
209 if (init_sockets[0].fd == -1)
210 {
211 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
212 exit (-1);
213 }
214 insock.sin_family = AF_INET;
215 insock.sin_port = htons (settings.csport);
216 insock.sin_addr.s_addr = htonl (INADDR_ANY);
217
218 linger_opt.l_onoff = 0;
219 linger_opt.l_linger = 0;
220 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
221 {
222 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
223 }
224
225/* Would be nice to have an autoconf check for this. It appears that
226 * these functions are both using the same calling syntax, just one
227 * of them needs extra valus passed.
228 */
229#if defined(__osf__) || defined(hpux) || defined(sgi) || defined(NeXT) || \
230 defined(__sun__) || defined(__linux__) || defined(SVR4) || \
231 defined(__FreeBSD__) || defined(__OpenBSD__) || \
232 defined(WIN32) /* ---win32 add this here */ || \
233 defined(__GNU__) /* HURD */
234 {
235 int tmp = 1;
236
237 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
238 {
239 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
240 }
241 }
242#else
243 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, (char *) NULL, 0))
244 {
245 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
246 }
247#endif
248
249 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
250 {
251 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
252 close (init_sockets[0].fd);
253 exit (-1);
254 }
255 if (listen (init_sockets[0].fd, 5) == (-1))
256 {
257 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
258 close (init_sockets[0].fd);
259 exit (-1);
260 }
261 init_sockets[0].status = Ns_Add;
262 read_client_images (); 155 read_client_images ();
263} 156}
264 157
265 158
266/******************************************************************************* 159/*******************************************************************************
… …
273void 166void
274free_all_newserver (void) 167free_all_newserver (void)
275{ 168{
276 LOG (llevDebug, "Freeing all new client/server information.\n"); 169 LOG (llevDebug, "Freeing all new client/server information.\n");
277 free_socket_images (); 170 free_socket_images ();
278 free (init_sockets);
279}
280
281/**
282 * Frees a socket.
283 * Basically, all we need to do here is free all data structures that
284 * might be associated with the socket. It is up to the caller to
285 * update the list
286 */
287
288void
289free_newsocket (NewSocket * ns)
290{
291 if (close (ns->fd))
292 {
293
294#ifdef ESRV_DEBUG
295 LOG (llevDebug, "Error closing socket %d\n", ns->fd);
296#endif
297 }
298
299 if (ns->stats.range)
300 free (ns->stats.range);
301
302 if (ns->stats.title)
303 free (ns->stats.title);
304
305 free (ns->host);
306 free (ns->inbuf.buf);
307} 171}
308 172
309/** Sends the 'goodbye' command to the player, and closes connection. */ 173/** Sends the 'goodbye' command to the player, and closes connection. */
310void 174void
311final_free_player (player *pl) 175final_free_player (player *pl)
312{ 176{
313 cs_write_string (&pl->socket, "goodbye", 8);
314 free_newsocket (&pl->socket);
315 free_player (pl); 177 free_player (pl);
316} 178}
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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