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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.15 by root, Thu Dec 14 02:37:37 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;
54client_socket *init_sockets;
55
56client_socket::client_socket ()
57{
58}
59
60client_socket::~client_socket ()
61{
62}
63 50
64/** 51/**
65 * Initializes a connection. Really, it just sets up the data structure, 52 * Initializes a connection. Really, it just sets up the data structure,
66 * 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
67 * client. 54 * client.
68 */ 55 */
69void 56client::client (int fd, const char *peername)
70client_socket::init (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)
71{ 61{
72 int bufsize = 65535; /*Supposed absolute upper limit */ 62 {
73 int oldbufsize; 63 struct linger linger_opt;
74 int buflen = sizeof (int);
75 64
76 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 65 linger_opt.l_onoff = 0;
77 LOG (llevError, "InitConnection: Error on fcntl.\n"); 66 linger_opt.l_linger = 0;
78 67
79 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 68 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
80 oldbufsize = 0; 69 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
70 }
81 71
82 if (oldbufsize < bufsize) 72 {
83 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 73 int val = IPTOS_LOWDELAY;
84 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
85 74
86 buflen = sizeof (oldbufsize); 75 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
87 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 76 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
88#ifdef ESRV_DEBUG 77 }
89 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 }
90#endif 103#endif
91 104
92 faceset = 0; 105 {
93 facecache = 0; 106 int bufsize = 65535; /*Supposed absolute upper limit */
94 image2 = 0; 107 int oldbufsize;
95 sound = 0; 108 int buflen = sizeof (int);
96 exp64 = 0; 109
97 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
98 mapmode = Map0Cmd; 124 mapmode = Map0Cmd;
99 darkness = 1; 125 darkness = 1;
100 status = Ns_Add; 126 status = Ns_Add;
101 mapx = 11; 127 mapx = 11;
102 mapy = 11; 128 mapy = 11;
103 newmapcmd = 0;
104 itemcmd = 1; /* Default is version item1 command */ 129 itemcmd = 1; /* Default is version item1 command */
105 ext_mapinfos = 0; /*extendedmapinfo datas */
106 EMI_smooth = 0;
107 look_position = 0;
108 update_look = 0;
109 has_readable_type = 0;
110 supported_readables = 0;
111 monitor_spells = 0;
112 mapinfocmd = 0;
113 extcmd = 0;
114 extmap = 0;
115 130
116 /* we should really do some checking here - if total clients overflows 131 faces_sent = salloc<uint8> (nrofpixmaps, 0);
117 * we need to do something more intelligent, because client id's will start
118 * duplicating (not likely in normal cases, but malicous attacks that
119 * just open and close connections could get this total up.
120 */
121 inbuf_len = 0;
122 132
123 /* Basic initialization. Needed because we do a check in
124 * HandleClient for oldsocketmode without checking the
125 * length of data.
126 */
127 memset (&lastmap, 0, sizeof (struct Map));
128 memset (faces_sent, 0, faces_sent_len * sizeof (*faces_sent));
129 memset (&anims_sent, 0, sizeof (anims_sent));
130 memset (&stats, 0, sizeof (struct statsinfo));
131 /* 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
132 * 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
133 * face information. 135 * face information.
134 */ 136 */
135 faces_sent[0] = NS_FACESENT_FACE; 137 faces_sent[0] = NS_FACESENT_FACE;
136 138
137 outputbuffer.start = 0; 139 // socket I/O is low priority
138 outputbuffer.len = 0; 140 // we prefer to have the server run instead of handling client requests
139 can_write = 1; 141 socket_ev.prio (PE_PRIO_NORMAL + 1);
140 password_fails = 0; 142 socket_ev.fd (fd);
143 socket_ev.poll (PE_R);
141 144
142 current_map = 0; 145 // command handling is even lower priority
143 current_x = 0; 146 // that way no client can monopolise the server
144 current_y = 0; 147 cmd_ev.prio (PE_PRIO_NORMAL + 2);
145 client[0] = 0;
146 buggy_mapscroll = 0;
147 148
148 sent_scroll = 0; 149 // initialisation done, kick it!
149 host = strdup_local (from_ip);
150
151 {
152 packet sl;
153 sl.printf ("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);
154 send_packet (sl); 151 flush ();
155 }
156 152
157 if (socket_info.nconns > cst_tot.max_conn) 153#if 0//TODO
158 cst_tot.max_conn = socket_info.nconns; 154 socket_info.nconns++;
159 if (socket_info.nconns > cst_lst.max_conn) 155 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
160 cst_lst.max_conn = socket_info.nconns; 156 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
157#endif
161} 158}
162 159
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}
163 181
164/** 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. */
165void 183void
166init_ericserver (void) 184init_ericserver (void)
167{ 185{
168 struct sockaddr_in insock;
169 struct protoent *protox;
170 struct linger linger_opt;
171
172 socket_info.max_filedescriptor = sysconf (_SC_OPEN_MAX);
173
174 socket_info.timeout.tv_sec = 0;
175 socket_info.timeout.tv_usec = 0;
176 socket_info.nconns = 0;
177
178 memset (&cst_tot, 0, sizeof (CS_Stats));
179 memset (&cst_lst, 0, sizeof (CS_Stats));
180 cst_tot.time_start = time (NULL); 186 cst_tot.time_start = time (NULL);
181 cst_lst.time_start = time (NULL); 187 cst_lst.time_start = time (NULL);
182 188
183 LOG (llevDebug, "Initialize new client/server data\n"); 189 LOG (llevDebug, "Initialize new client/server data\n");
184 socket_info.nconns = 1;
185 init_sockets = (client_socket *) malloc (sizeof (client_socket));
186 init_sockets[0].faces_sent = NULL; /* unused */
187 socket_info.allocated_sockets = 1;
188 190
189 protox = getprotobyname ("tcp");
190 if (protox == NULL)
191 {
192 LOG (llevError, "init_ericserver: Error getting protox\n");
193 return;
194 }
195
196 init_sockets[0].fd = socket (PF_INET, SOCK_STREAM, protox->p_proto);
197 if (init_sockets[0].fd == -1)
198 {
199 LOG (llevError, "Cannot create socket: %s\n", strerror (errno));
200 exit (-1);
201 }
202
203 insock.sin_family = AF_INET;
204 insock.sin_port = htons (settings.csport);
205 insock.sin_addr.s_addr = htonl (INADDR_ANY);
206
207 linger_opt.l_onoff = 0;
208 linger_opt.l_linger = 0;
209 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_LINGER, (char *) &linger_opt, sizeof (struct linger)))
210 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno));
211
212 {
213 int tmp = 1;
214
215 if (setsockopt (init_sockets[0].fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp)))
216 LOG (llevError, "Cannot setsockopt(SO_REUSEADDR): %s\n", strerror (errno));
217 }
218
219 if (bind (init_sockets[0].fd, (struct sockaddr *) &insock, sizeof (insock)) == (-1))
220 {
221 LOG (llevError, "Cannot bind socket to port %d: %s\n", ntohs (insock.sin_port), strerror (errno));
222 close (init_sockets[0].fd);
223 exit (-1);
224 }
225
226 if (listen (init_sockets[0].fd, 5) == (-1))
227 {
228 LOG (llevError, "Cannot listen on socket: %s\n", strerror (errno));
229 close (init_sockets[0].fd);
230 exit (-1);
231 }
232
233 init_sockets[0].status = Ns_Add;
234 read_client_images (); 191 read_client_images ();
235} 192}
236 193
237 194
238/******************************************************************************* 195/*******************************************************************************
… …
245void 202void
246free_all_newserver (void) 203free_all_newserver (void)
247{ 204{
248 LOG (llevDebug, "Freeing all new client/server information.\n"); 205 LOG (llevDebug, "Freeing all new client/server information.\n");
249 free_socket_images (); 206 free_socket_images ();
250 free (init_sockets);
251}
252
253/**
254 * Frees a socket.
255 * Basically, all we need to do here is free all data structures that
256 * might be associated with the socket. It is up to the caller to
257 * update the list
258 */
259
260void
261free_newsocket (client_socket *ns)
262{
263 close (ns->fd);
264
265 if (ns->stats.range)
266 free (ns->stats.range);
267
268 if (ns->stats.title)
269 free (ns->stats.title);
270
271 free (ns->host);
272} 207}
273 208
274/** Sends the 'goodbye' command to the player, and closes connection. */ 209/** Sends the 'goodbye' command to the player, and closes connection. */
275void 210void
276final_free_player (player *pl) 211final_free_player (player *pl)
277{ 212{
278 pl->socket.send_packet ("goodbye");
279 free_newsocket (&pl->socket);
280 free_player (pl); 213 free_player (pl);
281} 214}
282 215
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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