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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.12 by root, Thu Dec 14 00:01:35 2006 UTC vs.
Revision 1.25 by root, Sun Dec 17 19:14:00 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
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;
116 131
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->lastmap, 0, sizeof (struct Map));
122 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent));
123 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent));
124 memset (&ns->stats, 0, sizeof (struct statsinfo));
125 /* 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
126 * 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
127 * face information. 134 * face information.
128 */ 135 */
129 ns->faces_sent[0] = NS_FACESENT_FACE; 136 faces_sent[0] = NS_FACESENT_FACE;
130 137
131 ns->outputbuffer.start = 0; 138 // socket I/O is low priority
132 ns->outputbuffer.len = 0; 139 // we prefer to have the server run instead of handling client requests
133 ns->can_write = 1; 140 socket_ev.prio (PE_PRIO_NORMAL + 1);
134 ns->password_fails = 0; 141 socket_ev.fd (fd);
142 socket_ev.poll (PE_R);
135 143
136 ns->current_map = 0; 144 // command handling is even lower priority
137 ns->current_x = 0; 145 // that way no client can monopolise the server
138 ns->current_y = 0; 146 cmd_ev.prio (PE_PRIO_NORMAL + 2);
139 ns->client[0] = 0;
140 ns->buggy_mapscroll = 0;
141 147
142 ns->sent_scroll = 0; 148 // initialisation done, kick it!
143 ns->host = strdup_local (from_ip);
144 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);
145 sl.buf = (unsigned char *) buf; 150 flush ();
146 sl.len = strlen ((char *) buf); 151
147 Send_With_Handling (ns, &sl); 152#if 0//TODO
148#ifdef CS_LOGSTATS 153 socket_info.nconns++;
149 if (socket_info.nconns > cst_tot.max_conn) 154 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
150 cst_tot.max_conn = socket_info.nconns; 155 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
151 if (socket_info.nconns > cst_lst.max_conn)
152 cst_lst.max_conn = socket_info.nconns;
153#endif 156#endif
154} 157}
155 158
159client::~client ()
160{
161 if (pl)
162 pl->socket = 0;
163
164 if (fd >= 0)
165 close (fd);
166
167 sfree<uint8> (faces_sent, nrofpixmaps);
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}
156 180
157/** 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. */
158void 182void
159init_ericserver (void) 183init_ericserver (void)
160{ 184{
161 struct sockaddr_in insock;
162 struct protoent *protox;
163 struct linger linger_opt;
164
165 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
166
167 socket_info.timeout.tv_sec = 0;
168 socket_info.timeout.tv_usec = 0;
169 socket_info.nconns = 0;
170
171#ifdef CS_LOGSTATS
172 memset (&cst_tot, 0, sizeof (CS_Stats));
173 memset (&cst_lst, 0, sizeof (CS_Stats));
174 cst_tot.time_start = time (NULL); 185 cst_tot.time_start = time (NULL);
175 cst_lst.time_start = time (NULL); 186 cst_lst.time_start = time (NULL);
176#endif
177 187
178 LOG (llevDebug, "Initialize new client/server data\n"); 188 LOG (llevDebug, "Initialize new client/server data\n");
179 socket_info.nconns = 1;
180 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
181 init_sockets[0].faces_sent = NULL; /* unused */
182 socket_info.allocated_sockets = 1;
183 189
184 protox = getprotobyname ("tcp");
185 if (protox == NULL)
186 {
187 LOG (llevError, "init_ericserver: Error getting protox\n");
188 return;
189 }
190
191 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
192 if (init_sockets[0].fd == -1)
193 {
194 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
195 exit (-1);
196 }
197
198 insock.sin_family = AF_INET;
199 insock.sin_port = htons (settings.csport);
200 insock.sin_addr.s_addr = htonl (INADDR_ANY);
201
202 linger_opt.l_onoff = 0;
203 linger_opt.l_linger = 0;
204 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
205 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
206
207 {
208 int tmp = 1;
209
210 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
211 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
212 }
213
214 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
215 {
216 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
217 close (init_sockets[0].fd);
218 exit (-1);
219 }
220
221 if (listen (init_sockets[0].fd, 5) == (-1))
222 {
223 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
224 close (init_sockets[0].fd);
225 exit (-1);
226 }
227
228 init_sockets[0].status = Ns_Add;
229 read_client_images (); 190 read_client_images ();
230} 191}
231 192
232 193
233/******************************************************************************* 194/*******************************************************************************
… …
240void 201void
241free_all_newserver (void) 202free_all_newserver (void)
242{ 203{
243 LOG (llevDebug, "Freeing all new client/server information.\n"); 204 LOG (llevDebug, "Freeing all new client/server information.\n");
244 free_socket_images (); 205 free_socket_images ();
245 free (init_sockets);
246}
247
248/**
249 * Frees a socket.
250 * Basically, all we need to do here is free all data structures that
251 * might be associated with the socket. It is up to the caller to
252 * update the list
253 */
254
255void
256free_newsocket (NewSocket *ns)
257{
258 close (ns->fd);
259
260 if (ns->stats.range)
261 free (ns->stats.range);
262
263 if (ns->stats.title)
264 free (ns->stats.title);
265
266 free (ns->host);
267} 206}
268 207
269/** Sends the 'goodbye' command to the player, and closes connection. */ 208/** Sends the 'goodbye' command to the player, and closes connection. */
270void 209void
271final_free_player (player *pl) 210final_free_player (player *pl)
272{ 211{
273 cs_write_string (&pl->socket, "goodbye", 8);
274 free_newsocket (&pl->socket);
275 free_player (pl); 212 free_player (pl);
276} 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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