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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.11 by root, Wed Dec 13 02:55:51 2006 UTC vs.
Revision 1.24 by root, Sun Dec 17 19:07:23 2006 UTC

… …
37#include <sproto.h> 37#include <sproto.h>
38#include <sys/types.h> 38#include <sys/types.h>
39#include <sys/time.h> 39#include <sys/time.h>
40#include <sys/socket.h> 40#include <sys/socket.h>
41#include <netinet/in.h> 41#include <netinet/in.h>
42#include <netinet/tcp.h>
43#include <netinet/ip.h>
42#include <netdb.h> 44#include <netdb.h>
43 45
44#ifdef HAVE_UNISTD_H
45# include <unistd.h> 46#include <unistd.h>
46#endif
47
48#ifdef HAVE_ARPA_INET_H
49# include <arpa/inet.h> 47#include <arpa/inet.h>
50#endif
51#include <newserver.h>
52 48
53Socket_Info socket_info; 49sockvec clients;
54NewSocket *init_sockets;
55 50
56/** 51/**
57 * Initializes a connection. Really, it just sets up the data structure, 52 * Initializes a connection. Really, it just sets up the data structure,
58 * socket setup is handled elsewhere. We do send a version to the 53 * socket setup is handled elsewhere. We do send a version to the
59 * client. 54 * client.
60 */ 55 */
61void 56client::client (int fd, const char *peername)
62InitConnection (NewSocket *ns, const char *from_ip) 57: fd (fd), host (strdup (peername)),
58 socket_ev (this, &client::socket_cb),
59 cmd_ev (this, &client::cmd_cb)
63{ 60{
64 SockList sl; 61 {
65 char buf[256]; 62 struct linger linger_opt;
66 int bufsize = 65535; /*Supposed absolute upper limit */
67 int oldbufsize;
68 int buflen = sizeof (int);
69 63
70 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 64 linger_opt.l_onoff = 0;
71 LOG (llevError, "InitConnection: Error on fcntl.\n"); 65 linger_opt.l_linger = 0;
72 66
73 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 67 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
74 oldbufsize = 0; 68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 }
75 70
76 if (oldbufsize < bufsize) 71 {
77 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 72 int val = IPTOS_LOWDELAY;
78 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
79 73
80 buflen = sizeof (oldbufsize); 74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
81 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 75 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
82#ifdef ESRV_DEBUG 76 }
83 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize); 77
78 {
79 int val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
83 }
84
85#ifdef __linux__
86 {
87 int val;
88
89 // set some very aggressive keepalive parameters
90 val = 10;
91 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
92 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
93
94 val = 5;
95 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
96 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
97
98 val = 1;
99 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
100 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
101 }
84#endif 102#endif
85 103
86 ns->faceset = 0; 104 {
87 ns->facecache = 0; 105 int bufsize = 65535; /*Supposed absolute upper limit */
88 ns->image2 = 0; 106 int oldbufsize;
89 ns->sound = 0; 107 int buflen = sizeof (int);
90 ns->exp64 = 0; 108
91 ns->monitor_spells = 0; 109 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
110 LOG (llevError, "InitConnection: Error on fcntl.\n");
111
112 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
113 oldbufsize = 0;
114
115 if (oldbufsize < bufsize)
116 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
117 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
118
119 buflen = sizeof (oldbufsize);
120 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
121 }
122
92 ns->mapmode = Map0Cmd; 123 mapmode = Map0Cmd;
93 ns->darkness = 1; 124 darkness = 1;
94 ns->status = Ns_Add; 125 status = Ns_Add;
95 ns->mapx = 11; 126 mapx = 11;
96 ns->mapy = 11; 127 mapy = 11;
97 ns->newmapcmd = 0;
98 ns->itemcmd = 1; /* Default is version item1 command */ 128 itemcmd = 1; /* Default is version item1 command */
99 ns->ext_mapinfos = 0; /*extendedmapinfo datas */
100 ns->EMI_smooth = 0;
101 ns->look_position = 0;
102 ns->update_look = 0;
103 ns->has_readable_type = 0;
104 ns->supported_readables = 0;
105 ns->monitor_spells = 0;
106 ns->mapinfocmd = 0;
107 ns->extcmd = 0;
108 ns->extmap = 0;
109 129
110 /* we should really do some checking here - if total clients overflows 130 faces_sent = salloc<uint8> (nrofpixmaps, 0);
111 * we need to do something more intelligent, because client id's will start 131
112 * duplicating (not likely in normal cases, but malicous attacks that
113 * just open and close connections could get this total up.
114 */
115 ns->inbuf.len = 0;
116 ns->inbuf.buf = (unsigned char *) malloc (sizeof (unsigned char) * MAXSOCKBUF);
117 /* Basic initialization. Needed because we do a check in
118 * HandleClient for oldsocketmode without checking the
119 * length of data.
120 */
121 memset (ns->inbuf.buf, 0, sizeof (unsigned char) * MAXSOCKBUF);
122 memset (&ns->lastmap, 0, sizeof (struct Map));
123 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent));
124 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent));
125 memset (&ns->stats, 0, sizeof (struct statsinfo));
126 /* Do this so we don't send a face command for the client for 132 /* Do this so we don't send a face command for the client for
127 * this face. Face 0 is sent to the client to say clear 133 * this face. Face 0 is sent to the client to say clear
128 * face information. 134 * face information.
129 */ 135 */
130 ns->faces_sent[0] = NS_FACESENT_FACE; 136 faces_sent[0] = NS_FACESENT_FACE;
131 137
132 ns->outputbuffer.start = 0; 138 // socket I/O is low priority
133 ns->outputbuffer.len = 0; 139 // we prefer to have the server run instead of handling client requests
134 ns->can_write = 1; 140 socket_ev.prio (PE_PRIO_NORMAL + 1);
135 ns->password_fails = 0; 141 socket_ev.fd (fd);
142 socket_ev.poll (PE_R);
136 143
137 ns->current_map = 0; 144 // command handling is even lower priority
138 ns->current_x = 0; 145 // that way no client can monopolise the server
139 ns->current_y = 0; 146 cmd_ev.prio (PE_PRIO_NORMAL + 2);
140 ns->client[0] = 0;
141 ns->buggy_mapscroll = 0;
142 147
143 ns->sent_scroll = 0; 148 // initialisation done, kick it!
144 ns->host = strdup_local (from_ip);
145 sprintf ((char *) buf, "version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 149 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
146 sl.buf = (unsigned char *) buf; 150 flush ();
147 sl.len = strlen ((char *) buf); 151
148 Send_With_Handling (ns, &sl); 152#if 0//TODO
149#ifdef CS_LOGSTATS 153 socket_info.nconns++;
150 if (socket_info.nconns > cst_tot.max_conn) 154 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
151 cst_tot.max_conn = socket_info.nconns; 155 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
152 if (socket_info.nconns > cst_lst.max_conn)
153 cst_lst.max_conn = socket_info.nconns;
154#endif 156#endif
155} 157}
156 158
159client::~client ()
160{
161 if (pl)
162 pl->socket = 0;
163
164 if (fd >= 0)
165 close (fd);
166
167 sfree<uint8> (faces_sent);
168 free (stats.range);
169 free (stats.title);
170 free (host);
171}
172
173void
174client::destroy ()
175{
176 status = Ns_Dead;
177 socket_ev.suspend ();
178 cmd_ev.suspend ();
179}
157 180
158/** This sets up the socket and reads all the image information into memory. */ 181/** This sets up the socket and reads all the image information into memory. */
159void 182void
160init_ericserver (void) 183init_ericserver (void)
161{ 184{
162 struct sockaddr_in insock;
163 struct protoent *protox;
164 struct linger linger_opt;
165
166 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
167
168 socket_info.timeout.tv_sec = 0;
169 socket_info.timeout.tv_usec = 0;
170 socket_info.nconns = 0;
171
172#ifdef CS_LOGSTATS
173 memset (&cst_tot, 0, sizeof (CS_Stats));
174 memset (&cst_lst, 0, sizeof (CS_Stats));
175 cst_tot.time_start = time (NULL); 185 cst_tot.time_start = time (NULL);
176 cst_lst.time_start = time (NULL); 186 cst_lst.time_start = time (NULL);
177#endif
178 187
179 LOG (llevDebug, "Initialize new client/server data\n"); 188 LOG (llevDebug, "Initialize new client/server data\n");
180 socket_info.nconns = 1;
181 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
182 init_sockets[0].faces_sent = NULL; /* unused */
183 socket_info.allocated_sockets = 1;
184 189
185 protox = getprotobyname ("tcp");
186 if (protox == NULL)
187 {
188 LOG (llevError, "init_ericserver: Error getting protox\n");
189 return;
190 }
191
192 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
193 if (init_sockets[0].fd == -1)
194 {
195 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
196 exit (-1);
197 }
198
199 insock.sin_family = AF_INET;
200 insock.sin_port = htons (settings.csport);
201 insock.sin_addr.s_addr = htonl (INADDR_ANY);
202
203 linger_opt.l_onoff = 0;
204 linger_opt.l_linger = 0;
205 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
206 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
207
208 {
209 int tmp = 1;
210
211 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
212 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
213 }
214
215 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
216 {
217 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
218 close (init_sockets[0].fd);
219 exit (-1);
220 }
221
222 if (listen (init_sockets[0].fd, 5) == (-1))
223 {
224 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
225 close (init_sockets[0].fd);
226 exit (-1);
227 }
228
229 init_sockets[0].status = Ns_Add;
230 read_client_images (); 190 read_client_images ();
231} 191}
232 192
233 193
234/******************************************************************************* 194/*******************************************************************************
… …
241void 201void
242free_all_newserver (void) 202free_all_newserver (void)
243{ 203{
244 LOG (llevDebug, "Freeing all new client/server information.\n"); 204 LOG (llevDebug, "Freeing all new client/server information.\n");
245 free_socket_images (); 205 free_socket_images ();
246 free (init_sockets);
247}
248
249/**
250 * Frees a socket.
251 * Basically, all we need to do here is free all data structures that
252 * might be associated with the socket. It is up to the caller to
253 * update the list
254 */
255
256void
257free_newsocket (NewSocket *ns)
258{
259 close (ns->fd);
260
261 if (ns->stats.range)
262 free (ns->stats.range);
263
264 if (ns->stats.title)
265 free (ns->stats.title);
266
267 free (ns->host);
268 free (ns->inbuf.buf);
269} 206}
270 207
271/** Sends the 'goodbye' command to the player, and closes connection. */ 208/** Sends the 'goodbye' command to the player, and closes connection. */
272void 209void
273final_free_player (player *pl) 210final_free_player (player *pl)
274{ 211{
275 cs_write_string (&pl->socket, "goodbye", 8);
276 free_newsocket (&pl->socket);
277 free_player (pl); 212 free_player (pl);
278} 213}
214
215bool
216add_client (int fd, const char *peername)
217{
218 if (checkbanned (NULL, peername))
219 {
220 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
221 return false;
222 }
223 else
224 {
225 client *ns = new client (dup (fd), peername);
226 clients.push_back (ns);
227 return true;
228 }
229}
230

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