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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.15 by root, Thu Dec 14 02:37:37 2006 UTC vs.
Revision 1.32 by root, Wed Dec 27 05:32:26 2006 UTC

… …
29 * 29 *
30 * Mainly deals with initialization and higher level socket 30 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 31 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c 32 * The reading of data is handled in ericserver.c
33 */ 33 */
34
35 34
36#include <global.h> 35#include <global.h>
37#include <sproto.h> 36#include <sproto.h>
38#include <sys/types.h> 37#include <sys/types.h>
39#include <sys/time.h> 38#include <sys/time.h>
40#include <sys/socket.h> 39#include <sys/socket.h>
41#include <netinet/in.h> 40#include <netinet/in.h>
41#include <netinet/tcp.h>
42#include <netinet/ip.h>
42#include <netdb.h> 43#include <netdb.h>
43 44
44#ifdef HAVE_UNISTD_H
45# include <unistd.h> 45#include <unistd.h>
46#endif
47
48#ifdef HAVE_ARPA_INET_H
49# include <arpa/inet.h> 46#include <arpa/inet.h>
50#endif
51#include <newserver.h>
52 47
53Socket_Info socket_info; 48#include <algorithm>
54client_socket *init_sockets;
55 49
56client_socket::client_socket () 50sockvec clients;
57{
58}
59
60client_socket::~client_socket ()
61{
62}
63 51
64/** 52/**
65 * Initializes a connection. Really, it just sets up the data structure, 53 * Initializes a connection. Really, it just sets up the data structure,
66 * socket setup is handled elsewhere. We do send a version to the 54 * socket setup is handled elsewhere. We do send a version to the
67 * client. 55 * client.
68 */ 56 */
69void 57client::client (int fd, const char *peername)
70client_socket::init (const char *from_ip) 58: fd (fd), host (strdup (peername)),
59 socket_ev (this, &client::socket_cb),
60 cmd_ev (this, &client::cmd_cb),
61 cc_inv (this), cc_other (this)
71{ 62{
72 int bufsize = 65535; /*Supposed absolute upper limit */ 63 {
73 int oldbufsize; 64 struct linger linger_opt;
74 int buflen = sizeof (int);
75 65
76 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 66 linger_opt.l_onoff = 0;
77 LOG (llevError, "InitConnection: Error on fcntl.\n"); 67 linger_opt.l_linger = 0;
78 68
79 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 69 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
80 oldbufsize = 0; 70 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
71 }
81 72
82 if (oldbufsize < bufsize) 73 {
83 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 74 int val = IPTOS_LOWDELAY;
84 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
85 75
86 buflen = sizeof (oldbufsize); 76 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
87 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 77 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
88#ifdef ESRV_DEBUG 78 }
89 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize); 79
80 {
81 int val = 1;
82
83 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
84 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
85 }
86
87#ifdef __linux__
88 {
89 int val;
90
91 // set some very aggressive keepalive parameters
92 val = 10;
93 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
94 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
95
96 val = 5;
97 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
98 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
99
100 val = 1;
101 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
102 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
103 }
90#endif 104#endif
91 105
92 faceset = 0; 106 {
93 facecache = 0; 107 int bufsize = 65535; /*Supposed absolute upper limit */
94 image2 = 0; 108 int oldbufsize;
95 sound = 0; 109 int buflen = sizeof (int);
96 exp64 = 0; 110
97 monitor_spells = 0; 111 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
112 LOG (llevError, "InitConnection: Error on fcntl.\n");
113
114 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
115 oldbufsize = 0;
116
117 if (oldbufsize < bufsize)
118 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
119 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
120
121 buflen = sizeof (oldbufsize);
122 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
123 }
124
125 state = ST_SETUP;
98 mapmode = Map0Cmd; 126 mapmode = Map0Cmd;
99 darkness = 1; 127 darkness = 1;
100 status = Ns_Add;
101 mapx = 11; 128 mapx = 11;
102 mapy = 11; 129 mapy = 11;
103 newmapcmd = 0;
104 itemcmd = 1; /* Default is version item1 command */ 130 itemcmd = 1; /* Default is version item1 command */
105 ext_mapinfos = 0; /*extendedmapinfo datas */
106 EMI_smooth = 0;
107 look_position = 0;
108 update_look = 0;
109 has_readable_type = 0;
110 supported_readables = 0;
111 monitor_spells = 0;
112 mapinfocmd = 0;
113 extcmd = 0;
114 extmap = 0;
115 131
116 /* we should really do some checking here - if total clients overflows 132 faces_sent = salloc0<uint8> (nrofpixmaps);
117 * we need to do something more intelligent, because client id's will start
118 * duplicating (not likely in normal cases, but malicous attacks that
119 * just open and close connections could get this total up.
120 */
121 inbuf_len = 0;
122 133
123 /* Basic initialization. Needed because we do a check in
124 * HandleClient for oldsocketmode without checking the
125 * length of data.
126 */
127 memset (&lastmap, 0, sizeof (struct Map));
128 memset (faces_sent, 0, faces_sent_len * sizeof (*faces_sent));
129 memset (&anims_sent, 0, sizeof (anims_sent));
130 memset (&stats, 0, sizeof (struct statsinfo));
131 /* Do this so we don't send a face command for the client for 134 /* Do this so we don't send a face command for the client for
132 * this face. Face 0 is sent to the client to say clear 135 * this face. Face 0 is sent to the client to say clear
133 * face information. 136 * face information.
134 */ 137 */
135 faces_sent[0] = NS_FACESENT_FACE; 138 faces_sent[0] = NS_FACESENT_FACE;
136 139
137 outputbuffer.start = 0; 140 // socket I/O is low priority
138 outputbuffer.len = 0; 141 // we prefer to have the server run instead of handling client requests
139 can_write = 1; 142 socket_ev.prio (PE_PRIO_NORMAL + 1);
140 password_fails = 0; 143 socket_ev.fd (fd);
144 socket_ev.poll (PE_R);
141 145
142 current_map = 0; 146 // command handling is even lower priority
143 current_x = 0; 147 // that way no client can monopolise the server
144 current_y = 0; 148 cmd_ev.prio (PE_PRIO_NORMAL + 2);
145 client[0] = 0;
146 buggy_mapscroll = 0;
147 149
148 sent_scroll = 0; 150 // initialisation done, kick it!
149 host = strdup_local (from_ip);
150
151 {
152 packet sl;
153 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 151 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
154 send_packet (sl); 152 flush ();
155 }
156 153
157 if (socket_info.nconns > cst_tot.max_conn) 154 // clients are externally referenced by the socket
158 cst_tot.max_conn = socket_info.nconns; 155 refcnt_inc ();
159 if (socket_info.nconns > cst_lst.max_conn) 156 clients.push_back (this);
160 cst_lst.max_conn = socket_info.nconns;
161}
162 157
158#if 0//TODO
159 socket_info.nconns++;
160 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
161 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
162#endif
163}
164
165client::~client ()
166{
167 sockvec::iterator i = find (clients.begin (), clients.end (), this);
168 if (i != clients.end ())
169 clients.erase (i);
170
171 sfree<uint8> (faces_sent, nrofpixmaps);
172 free (stats.range);
173 free (stats.title);
174 free (host);
175}
176
177void
178client::do_destroy ()
179{
180 attachable::do_destroy ();
181
182 if (pl)
183 pl->disconnect ();
184
185 if (fd >= 0)
186 close (fd);
187
188 state = ST_DEAD;
189
190 socket_ev.suspend ();
191 cmd_ev.suspend ();
192
193 // socket now longer references us
194 refcnt_dec ();
195}
163 196
164/** This sets up the socket and reads all the image information into memory. */ 197/** This sets up the socket and reads all the image information into memory. */
165void 198void
166init_ericserver (void) 199init_ericserver (void)
167{ 200{
168 struct sockaddr_in insock;
169 struct protoent *protox;
170 struct linger linger_opt;
171
172 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
173
174 socket_info.timeout.tv_sec = 0;
175 socket_info.timeout.tv_usec = 0;
176 socket_info.nconns = 0;
177
178 memset (&cst_tot, 0, sizeof (CS_Stats));
179 memset (&cst_lst, 0, sizeof (CS_Stats));
180 cst_tot.time_start = time (NULL); 201 cst_tot.time_start = time (NULL);
181 cst_lst.time_start = time (NULL); 202 cst_lst.time_start = time (NULL);
182 203
183 LOG (llevDebug, "Initialize new client/server data\n"); 204 LOG (llevDebug, "Initialize new client/server data\n");
184 socket_info.nconns = 1;
185 init_sockets = (client_socket *) malloc (sizeof (client_socket));
186 init_sockets[0].faces_sent = NULL; /* unused */
187 socket_info.allocated_sockets = 1;
188 205
189 protox = getprotobyname ("tcp");
190 if (protox == NULL)
191 {
192 LOG (llevError, "init_ericserver: Error getting protox\n");
193 return;
194 }
195
196 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
197 if (init_sockets[0].fd == -1)
198 {
199 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
200 exit (-1);
201 }
202
203 insock.sin_family = AF_INET;
204 insock.sin_port = htons (settings.csport);
205 insock.sin_addr.s_addr = htonl (INADDR_ANY);
206
207 linger_opt.l_onoff = 0;
208 linger_opt.l_linger = 0;
209 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
210 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
211
212 {
213 int tmp = 1;
214
215 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
216 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
217 }
218
219 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
220 {
221 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
222 close (init_sockets[0].fd);
223 exit (-1);
224 }
225
226 if (listen (init_sockets[0].fd, 5) == (-1))
227 {
228 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
229 close (init_sockets[0].fd);
230 exit (-1);
231 }
232
233 init_sockets[0].status = Ns_Add;
234 read_client_images (); 206 read_client_images ();
235} 207}
236 208
237 209
238/******************************************************************************* 210/*******************************************************************************
… …
245void 217void
246free_all_newserver (void) 218free_all_newserver (void)
247{ 219{
248 LOG (llevDebug, "Freeing all new client/server information.\n"); 220 LOG (llevDebug, "Freeing all new client/server information.\n");
249 free_socket_images (); 221 free_socket_images ();
250 free (init_sockets);
251} 222}
252 223
253/** 224client *
254 * Frees a socket. 225client::create (int fd, const char *peername)
255 * Basically, all we need to do here is free all data structures that
256 * might be associated with the socket. It is up to the caller to
257 * update the list
258 */
259
260void
261free_newsocket (client_socket *ns)
262{ 226{
263 close (ns->fd); 227 if (checkbanned (NULL, peername))
228 {
229 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
230 return 0;
231 }
232 else
233 {
234 client *ns = new client (dup (fd), peername);
264 235
265 if (ns->stats.range) 236 ns->instantiate (); // effectively a nop right now
266 free (ns->stats.range);
267 237
268 if (ns->stats.title) 238 INVOKE_CLIENT (CONNECT, ns);
269 free (ns->stats.title);
270 239
271 free (ns->host); 240 return ns;
241 }
272} 242}
273 243
274/** Sends the 'goodbye' command to the player, and closes connection. */
275void
276final_free_player (player *pl)
277{
278 pl->socket.send_packet ("goodbye");
279 free_newsocket (&pl->socket);
280 free_player (pl);
281}
282

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