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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 1.26 by root, Wed Dec 20 09:14:22 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),
60 cc_inv (this), cc_other (this)
63{ 61{
64 SockList sl; 62 {
65 char buf[256]; 63 struct linger linger_opt;
66 int bufsize = 65535; /*Supposed absolute upper limit */
67 int oldbufsize;
68 int buflen = sizeof (int);
69 64
70 if (fcntl (ns->fd, F_SETFL, O_NONBLOCK) == -1) 65 linger_opt.l_onoff = 0;
71 LOG (llevError, "InitConnection: Error on fcntl.\n"); 66 linger_opt.l_linger = 0;
72 67
73 if (getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 68 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
74 oldbufsize = 0; 69 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
70 }
75 71
76 if (oldbufsize < bufsize) 72 {
77 if (setsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 73 int val = IPTOS_LOWDELAY;
78 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
79 74
80 buflen = sizeof (oldbufsize); 75 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
81 getsockopt (ns->fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 76 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
82#ifdef ESRV_DEBUG 77 }
83 LOG (llevDebug, "Socket buffer size now %d bytes\n", oldbufsize); 78
79 {
80 int val = 1;
81
82 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
83 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
84 }
85
86#ifdef __linux__
87 {
88 int val;
89
90 // set some very aggressive keepalive parameters
91 val = 10;
92 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
93 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
94
95 val = 5;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
98
99 val = 1;
100 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
101 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
102 }
84#endif 103#endif
85 104
86 ns->faceset = 0; 105 {
87 ns->facecache = 0; 106 int bufsize = 65535; /*Supposed absolute upper limit */
88 ns->image2 = 0; 107 int oldbufsize;
89 ns->sound = 0; 108 int buflen = sizeof (int);
90 ns->exp64 = 0; 109
91 ns->monitor_spells = 0; 110 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
111 LOG (llevError, "InitConnection: Error on fcntl.\n");
112
113 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
114 oldbufsize = 0;
115
116 if (oldbufsize < bufsize)
117 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
118 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
119
120 buflen = sizeof (oldbufsize);
121 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
122 }
123
92 ns->mapmode = Map0Cmd; 124 mapmode = Map0Cmd;
93 ns->darkness = 1; 125 darkness = 1;
94 ns->status = Ns_Add; 126 status = Ns_Add;
95 ns->mapx = 11; 127 mapx = 11;
96 ns->mapy = 11; 128 mapy = 11;
97 ns->newmapcmd = 0;
98 ns->itemcmd = 1; /* Default is version item1 command */ 129 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;
109 130
110 /* we should really do some checking here - if total clients overflows 131 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;
116 132
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 133 /* 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 134 * this face. Face 0 is sent to the client to say clear
127 * face information. 135 * face information.
128 */ 136 */
129 ns->faces_sent[0] = NS_FACESENT_FACE; 137 faces_sent[0] = NS_FACESENT_FACE;
130 138
131 ns->outputbuffer.start = 0; 139 // socket I/O is low priority
132 ns->outputbuffer.len = 0; 140 // we prefer to have the server run instead of handling client requests
133 ns->can_write = 1; 141 socket_ev.prio (PE_PRIO_NORMAL + 1);
134 ns->password_fails = 0; 142 socket_ev.fd (fd);
143 socket_ev.poll (PE_R);
135 144
136 ns->current_map = 0; 145 // command handling is even lower priority
137 ns->current_x = 0; 146 // that way no client can monopolise the server
138 ns->current_y = 0; 147 cmd_ev.prio (PE_PRIO_NORMAL + 2);
139 ns->client[0] = 0;
140 ns->buggy_mapscroll = 0;
141 148
142 ns->sent_scroll = 0; 149 // 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); 150 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
145 sl.buf = (unsigned char *) buf; 151 flush ();
146 sl.len = strlen ((char *) buf); 152
147 Send_With_Handling (ns, &sl); 153#if 0//TODO
148#ifdef CS_LOGSTATS 154 socket_info.nconns++;
149 if (socket_info.nconns > cst_tot.max_conn) 155 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
150 cst_tot.max_conn = socket_info.nconns; 156 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 157#endif
154} 158}
155 159
160client::~client ()
161{
162 if (pl)
163 pl->socket = 0;
164
165 if (fd >= 0)
166 close (fd);
167
168 sfree<uint8> (faces_sent, nrofpixmaps);
169 free (stats.range);
170 free (stats.title);
171 free (host);
172}
173
174void
175client::destroy ()
176{
177 status = Ns_Dead;
178 socket_ev.suspend ();
179 cmd_ev.suspend ();
180}
156 181
157/** This sets up the socket and reads all the image information into memory. */ 182/** This sets up the socket and reads all the image information into memory. */
158void 183void
159init_ericserver (void) 184init_ericserver (void)
160{ 185{
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); 186 cst_tot.time_start = time (NULL);
175 cst_lst.time_start = time (NULL); 187 cst_lst.time_start = time (NULL);
176#endif
177 188
178 LOG (llevDebug, "Initialize new client/server data\n"); 189 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;
183 190
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 (); 191 read_client_images ();
230} 192}
231 193
232 194
233/******************************************************************************* 195/*******************************************************************************
… …
240void 202void
241free_all_newserver (void) 203free_all_newserver (void)
242{ 204{
243 LOG (llevDebug, "Freeing all new client/server information.\n"); 205 LOG (llevDebug, "Freeing all new client/server information.\n");
244 free_socket_images (); 206 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} 207}
268 208
269/** Sends the 'goodbye' command to the player, and closes connection. */ 209/** Sends the 'goodbye' command to the player, and closes connection. */
270void 210void
271final_free_player (player *pl) 211final_free_player (player *pl)
272{ 212{
273 cs_write_string (&pl->socket, "goodbye", 8);
274 free_newsocket (&pl->socket);
275 free_player (pl); 213 free_player (pl);
276} 214}
215
216bool
217add_client (int fd, const char *peername)
218{
219 if (checkbanned (NULL, peername))
220 {
221 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
222 return false;
223 }
224 else
225 {
226 client *ns = new client (dup (fd), peername);
227 clients.push_back (ns);
228 return true;
229 }
230}
231

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