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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 1.22 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 SockList sl; 59 {
65 char buf[256]; 60 struct linger linger_opt;
66 int bufsize = 65535; /*Supposed absolute upper limit */
67 int oldbufsize;
68 int buflen = sizeof (int);
69 61
70 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 62 linger_opt.l_onoff = 0;
71 LOG (llevError, "InitConnection: Error on fcntl.\n"); 63 linger_opt.l_linger = 0;
72 64
73 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)))
74 oldbufsize = 0; 66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
67 }
75 68
76 if (oldbufsize < bufsize) 69 {
77 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 70 int bufsize = 65535; /*Supposed absolute upper limit */
78 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 71 int oldbufsize;
72 int buflen = sizeof (int);
79 73
80 buflen = sizeof (oldbufsize); 74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
81 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 75 LOG (llevError, "InitConnection: Error on fcntl.\n");
82#ifdef ESRV_DEBUG
83 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize);
84#endif
85 76
86 ns->faceset = 0; 77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
87 ns->facecache = 0; 78 oldbufsize = 0;
88 ns->image2 = 0;
89 ns->sound = 0;
90 ns->exp64 = 0;
91 ns->monitor_spells = 0;
92 ns->mapmode = Map0Cmd;
93 ns->darkness = 1;
94 ns->status = Ns_Add;
95 ns->mapx = 11;
96 ns->mapy = 11;
97 ns->newmapcmd = 0;
98 ns->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 79
110 /* we should really do some checking here - if total clients overflows 80 if (oldbufsize < bufsize)
111 * 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)))
112 * 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);
113 * just open and close connections could get this total up. 83
114 */ 84 buflen = sizeof (oldbufsize);
115 ns->inbuf.len = 0; 85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
116 ns->inbuf.buf = (unsigned char *) malloc (sizeof (unsigned char) * MAXSOCKBUF); 86 }
117 /* Basic initialization. Needed because we do a check in 87
118 * HandleClient for oldsocketmode without checking the 88 mapmode = Map0Cmd;
119 * length of data. 89 darkness = 1;
120 */ 90 status = Ns_Add;
121 memset (ns->inbuf.buf, 0, sizeof (unsigned char) * MAXSOCKBUF); 91 mapx = 11;
122 memset (&ns->lastmap, 0, sizeof (struct Map)); 92 mapy = 11;
123 memset (ns->faces_sent, 0, ns->faces_sent_len * sizeof (*ns->faces_sent)); 93 itemcmd = 1; /* Default is version item1 command */
124 memset (&ns->anims_sent, 0, sizeof (ns->anims_sent)); 94
125 memset (&ns->stats, 0, sizeof (struct statsinfo)); 95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
96
126 /* 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
127 * 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
128 * face information. 99 * face information.
129 */ 100 */
130 ns->faces_sent[0] = NS_FACESENT_FACE; 101 faces_sent[0] = NS_FACESENT_FACE;
131 102
132 ns->outputbuffer.start = 0; 103 // socket I/O is low priority
133 ns->outputbuffer.len = 0; 104 // we prefer to have the server run instead of handling client requests
134 ns->can_write = 1; 105 socket_ev.prio (PE_PRIO_NORMAL + 1);
135 ns->password_fails = 0; 106 socket_ev.fd (fd);
107 socket_ev.poll (PE_R);
136 108
137 ns->current_map = 0; 109 // command handling is even lower priority
138 ns->current_x = 0; 110 // that way no client can monopolise the server
139 ns->current_y = 0; 111 cmd_ev.prio (PE_PRIO_NORMAL + 2);
140 ns->client[0] = 0;
141 ns->buggy_mapscroll = 0;
142 112
143 ns->sent_scroll = 0; 113 // 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); 114 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
146 sl.buf = (unsigned char *) buf; 115 flush ();
147 sl.len = strlen ((char *) buf); 116
148 Send_With_Handling (ns, &sl); 117#if 0//TODO
149#ifdef CS_LOGSTATS 118 socket_info.nconns++;
150 if (socket_info.nconns > cst_tot.max_conn) 119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
151 cst_tot.max_conn = socket_info.nconns; 120 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 121#endif
155} 122}
156 123
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}
157 145
158/** 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. */
159void 147void
160init_ericserver (void) 148init_ericserver (void)
161{ 149{
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); 150 cst_tot.time_start = time (NULL);
176 cst_lst.time_start = time (NULL); 151 cst_lst.time_start = time (NULL);
177#endif
178 152
179 LOG (llevDebug, "Initialize new client/server data\n"); 153 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;
184 154
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 (); 155 read_client_images ();
231} 156}
232 157
233 158
234/******************************************************************************* 159/*******************************************************************************
… …
241void 166void
242free_all_newserver (void) 167free_all_newserver (void)
243{ 168{
244 LOG (llevDebug, "Freeing all new client/server information.\n"); 169 LOG (llevDebug, "Freeing all new client/server information.\n");
245 free_socket_images (); 170 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} 171}
270 172
271/** Sends the 'goodbye' command to the player, and closes connection. */ 173/** Sends the 'goodbye' command to the player, and closes connection. */
272void 174void
273final_free_player (player *pl) 175final_free_player (player *pl)
274{ 176{
275 cs_write_string (&pl->socket, "goodbye", 8);
276 free_newsocket (&pl->socket);
277 free_player (pl); 177 free_player (pl);
278} 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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