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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.13 by root, Thu Dec 14 01:12:35 2006 UTC vs.
Revision 1.22 by root, Sat Dec 16 21:40:26 2006 UTC

… …
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 <netdb.h> 42#include <netdb.h>
43 43
44#ifdef HAVE_UNISTD_H
45# include <unistd.h> 44#include <unistd.h>
46#endif 45#include <arpa/inet.h>
47 46
48#ifdef HAVE_ARPA_INET_H 47sockvec clients;
49# include <arpa/inet.h>
50#endif
51#include <newserver.h>
52
53Socket_Info socket_info;
54NewSocket *init_sockets;
55 48
56/** 49/**
57 * Initializes a connection. Really, it just sets up the data structure, 50 * Initializes a connection. Really, it just sets up the data structure,
58 * 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
59 * client. 52 * client.
60 */ 53 */
61void 54client::client (int fd, const char *peername)
62InitConnection (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)
63{ 58{
64 int bufsize = 65535; /*Supposed absolute upper limit */ 59 {
65 int oldbufsize; 60 struct linger linger_opt;
66 int buflen = sizeof (int);
67 61
68 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 62 linger_opt.l_onoff = 0;
69 LOG (llevError, "InitConnection: Error on fcntl.\n"); 63 linger_opt.l_linger = 0;
70 64
71 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
72 oldbufsize = 0; 66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
67 }
73 68
74 if (oldbufsize < bufsize) 69 {
75 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 70 int bufsize = 65535; /*Supposed absolute upper limit */
76 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 71 int oldbufsize;
72 int buflen = sizeof (int);
77 73
78 buflen = sizeof (oldbufsize); 74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
79 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 75 LOG (llevError, "InitConnection: Error on fcntl.\n");
80#ifdef ESRV_DEBUG
81 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
82#endif
83 76
84 ns->faceset = 0; 77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
85 ns->facecache = 0; 78 oldbufsize = 0;
86 ns->image2 = 0;
87 ns->sound = 0;
88 ns->exp64 = 0;
89 ns->monitor_spells = 0;
90 ns->mapmode = Map0Cmd;
91 ns->darkness = 1;
92 ns->status = Ns_Add;
93 ns->mapx = 11;
94 ns->mapy = 11;
95 ns->newmapcmd = 0;
96 ns->itemcmd = 1; /* Default is version item1 command */
97 ns->ext_mapinfos = 0; /*extendedmapinfo datas */
98 ns->EMI_smooth = 0;
99 ns->look_position = 0;
100 ns->update_look = 0;
101 ns->has_readable_type = 0;
102 ns->supported_readables = 0;
103 ns->monitor_spells = 0;
104 ns->mapinfocmd = 0;
105 ns->extcmd = 0;
106 ns->extmap = 0;
107 79
108 /* we should really do some checking here - if total clients overflows 80 if (oldbufsize < bufsize)
109 * we need to do something more intelligent, because client id's will start 81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
110 * duplicating (not likely in normal cases, but malicous attacks that 82 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
111 * just open and close connections could get this total up.
112 */
113 ns->inbuf_len = 0;
114 83
115 /* Basic initialization. Needed because we do a check in 84 buflen = sizeof (oldbufsize);
116 * HandleClient for oldsocketmode without checking the 85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
117 * length of data. 86 }
118 */ 87
119 memset (&ns->lastmap, 0, sizeof (struct Map)); 88 mapmode = Map0Cmd;
120 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent)); 89 darkness = 1;
121 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent)); 90 status = Ns_Add;
122 memset (&ns->stats, 0, sizeof (struct statsinfo)); 91 mapx = 11;
92 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */
94
95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
96
123 /* 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
124 * 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
125 * face information. 99 * face information.
126 */ 100 */
127 ns->faces_sent[0] = NS_FACESENT_FACE; 101 faces_sent[0] = NS_FACESENT_FACE;
128 102
129 ns->outputbuffer.start = 0; 103 // socket I/O is low priority
130 ns->outputbuffer.len = 0; 104 // we prefer to have the server run instead of handling client requests
131 ns->can_write = 1; 105 socket_ev.prio (PE_PRIO_NORMAL + 1);
132 ns->password_fails = 0; 106 socket_ev.fd (fd);
107 socket_ev.poll (PE_R);
133 108
134 ns->current_map = 0; 109 // command handling is even lower priority
135 ns->current_x = 0; 110 // that way no client can monopolise the server
136 ns->current_y = 0; 111 cmd_ev.prio (PE_PRIO_NORMAL + 2);
137 ns->client[0] = 0;
138 ns->buggy_mapscroll = 0;
139 112
140 ns->sent_scroll = 0; 113 // initialisation done, kick it!
141 ns->host = strdup_local (from_ip); 114 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
115 flush ();
142 116
143 { 117#if 0//TODO
144 SockList sl (MAXSOCKBUF); 118 socket_info.nconns++;
145 119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
146 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
147 Send_With_Handling (ns, &sl);
148 sl.free ();
149 }
150
151#ifdef CS_LOGSTATS
152 if (socket_info.nconns > cst_tot.max_conn)
153 cst_tot.max_conn = socket_info.nconns;
154 if (socket_info.nconns > cst_lst.max_conn)
155 cst_lst.max_conn = socket_info.nconns;
156#endif 121#endif
157} 122}
158 123
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}
159 145
160/** 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. */
161void 147void
162init_ericserver (void) 148init_ericserver (void)
163{ 149{
164 struct sockaddr_in insock;
165 struct protoent *protox;
166 struct linger linger_opt;
167
168 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
169
170 socket_info.timeout.tv_sec = 0;
171 socket_info.timeout.tv_usec = 0;
172 socket_info.nconns = 0;
173
174#ifdef CS_LOGSTATS
175 memset (&cst_tot, 0, sizeof (CS_Stats));
176 memset (&cst_lst, 0, sizeof (CS_Stats));
177 cst_tot.time_start = time (NULL); 150 cst_tot.time_start = time (NULL);
178 cst_lst.time_start = time (NULL); 151 cst_lst.time_start = time (NULL);
179#endif
180 152
181 LOG (llevDebug, "Initialize new client/server data\n"); 153 LOG (llevDebug, "Initialize new client/server data\n");
182 socket_info.nconns = 1;
183 init_sockets = (NewSocket *) malloc (sizeof (NewSocket));
184 init_sockets[0].faces_sent = NULL; /* unused */
185 socket_info.allocated_sockets = 1;
186 154
187 protox = getprotobyname ("tcp");
188 if (protox == NULL)
189 {
190 LOG (llevError, "init_ericserver: Error getting protox\n");
191 return;
192 }
193
194 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
195 if (init_sockets[0].fd == -1)
196 {
197 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
198 exit (-1);
199 }
200
201 insock.sin_family = AF_INET;
202 insock.sin_port = htons (settings.csport);
203 insock.sin_addr.s_addr = htonl (INADDR_ANY);
204
205 linger_opt.l_onoff = 0;
206 linger_opt.l_linger = 0;
207 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
208 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
209
210 {
211 int tmp = 1;
212
213 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
214 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
215 }
216
217 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
218 {
219 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
220 close (init_sockets[0].fd);
221 exit (-1);
222 }
223
224 if (listen (init_sockets[0].fd, 5) == (-1))
225 {
226 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
227 close (init_sockets[0].fd);
228 exit (-1);
229 }
230
231 init_sockets[0].status = Ns_Add;
232 read_client_images (); 155 read_client_images ();
233} 156}
234 157
235 158
236/******************************************************************************* 159/*******************************************************************************
… …
243void 166void
244free_all_newserver (void) 167free_all_newserver (void)
245{ 168{
246 LOG (llevDebug, "Freeing all new client/server information.\n"); 169 LOG (llevDebug, "Freeing all new client/server information.\n");
247 free_socket_images (); 170 free_socket_images ();
248 free (init_sockets);
249}
250
251/**
252 * Frees a socket.
253 * Basically, all we need to do here is free all data structures that
254 * might be associated with the socket. It is up to the caller to
255 * update the list
256 */
257
258void
259free_newsocket (NewSocket *ns)
260{
261 close (ns->fd);
262
263 if (ns->stats.range)
264 free (ns->stats.range);
265
266 if (ns->stats.title)
267 free (ns->stats.title);
268
269 free (ns->host);
270} 171}
271 172
272/** Sends the 'goodbye' command to the player, and closes connection. */ 173/** Sends the 'goodbye' command to the player, and closes connection. */
273void 174void
274final_free_player (player *pl) 175final_free_player (player *pl)
275{ 176{
276 pl->socket.send_packet ("goodbye");
277 free_newsocket (&pl->socket);
278 free_player (pl); 177 free_player (pl);
279} 178}
280 179
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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