server/socket/metaserver.c

/*
 * static char *rcsid_metaserver_c =
 *    "$Id$";
 */

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2002 Mark Wedel & Crossfire Development Team
    Copyright (C) 1992 Frank Tore Johansen

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The authors can be reached via e-mail at crossfire-devel@real-time.com
*/

/**
 * \file
 * \date 2003-12-02
 * Meta-server related functions.
 */

#include <global.h>

#ifndef WIN32 /* ---win32 exclude unix header files */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>

#endif /* end win32 */

static int metafd=-1;
static struct sockaddr_in sock;

/**
 * Connects to metaserver.
 *
 * Its only called once.  If we are not
 * trying to contact the metaserver of the connection attempt fails, metafd will be
 * set to -1.  We use this instead of messing with the settings.meta_on so that
 * that can be examined to at least see what the user was trying to do.
 */
void metaserver_init(void)
{

#ifdef WIN32 /* ***win32 metaserver_init(): init win32 socket */
        struct hostent *hostbn;
        int temp = 1;   
#endif

    if (!settings.meta_on) {
        metafd=-1;
        return;
    }

    if (isdigit(settings.meta_server[0]))
        sock.sin_addr.s_addr = inet_addr(settings.meta_server);
    else {
        struct hostent *hostbn = gethostbyname(settings.meta_server);
        if (hostbn == NULL) {
            LOG(llevDebug,"metaserver_init: Unable to resolve hostname %s\n", settings.meta_server);
            return;
        }
        memcpy(&sock.sin_addr, hostbn->h_addr, hostbn->h_length);
    }
#ifdef WIN32 /* ***win32 metaserver_init(): init win32 socket */
    ioctlsocket(metafd, FIONBIO , &temp);
#else 
    fcntl(metafd, F_SETFL, O_NONBLOCK);
#endif
    if ((metafd=socket(AF_INET, SOCK_DGRAM, 0))==-1) {
        LOG(llevDebug,"metaserver_init: Unable to create socket, err %d\n", errno);
        return;
    }
    sock.sin_family = AF_INET;
    sock.sin_port = htons(settings.meta_port);

    /* No hostname specified, so lets try to figure one out */
    if (settings.meta_host[0]==0) {
        char hostname[MAX_BUF], domain[MAX_BUF];
        if (gethostname(hostname, MAX_BUF-1)) {
            LOG(llevDebug,"metaserver_init: gethostname failed - will not report hostname\n");
            return;
        }

#ifdef WIN32 /* ***win32 metaserver_init(): gethostbyname! */
        hostbn = gethostbyname(hostname);
        if (hostbn != (struct hostent *) NULL) /* quick hack */
                memcpy(domain, hostbn->h_addr, hostbn->h_length);

        if (hostbn == (struct hostent *) NULL) {
#else
        if (getdomainname(domain, MAX_BUF-1)) {
#endif /* win32 */
            LOG(llevDebug,"metaserver_init: getdomainname failed - will not report hostname\n");
            return;
        }
        /* Potential overrun here but unlikely to occur */
        sprintf(settings.meta_host,"%s.%s", hostname, domain);
    }
}

/**
 * Updates our info in the metaserver
 */
void metaserver_update(void)
{
    char data[MAX_BUF], num_players=0;
#define CAT2_SUXX
#ifdef CAT2_SUXX
    num_players += 20;
#endif
    player *pl;

    if (metafd == -1) return;   /* No valid connection */

    /* We could use socket_info.nconns, but that is not quite as accurate,
     * as connections in the progress of being established, are listening
     * but don't have a player, etc.  This operation below should not be that
     * costly.
     */
    for (pl=first_player; pl!=NULL; pl=pl->next)
      if (!pl->hidden && pl->ob->map) num_players++;

    sprintf(data,"%s|%d|%s|%s|%d|%d|%ld", settings.meta_host, num_players, VERSION "+", 
            settings.meta_comment, cst_tot.ibytes, cst_tot.obytes,
            (long)time(NULL) - cst_tot.time_start);
    if (sendto(metafd, data, strlen(data), 0, (struct sockaddr *)&sock, sizeof(sock))<0) {
        LOG(llevDebug,"metaserver_update: sendto failed, err = %d\n", errno);
    }
}

Revision:	1.6
Committed:	Tue Jul 11 10:35:20 2006 UTC (17 years, 10 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+1 -1 lines
Log Message:	shop.c: Cheaper is actually better. metaserver.c: correct usercount is actually better.
#	User	Rev	Content
1	root	1.1	/*
2			* static char *rcsid_metaserver_c =
3	root	1.2	* "$Id$";
4	root	1.1	*/
5
6			/*
7			CrossFire, A Multiplayer game for X-windows
8
9			Copyright (C) 2002 Mark Wedel & Crossfire Development Team
10			Copyright (C) 1992 Frank Tore Johansen
11
12			This program is free software; you can redistribute it and/or modify
13			it under the terms of the GNU General Public License as published by
14			the Free Software Foundation; either version 2 of the License, or
15			(at your option) any later version.
16
17			This program is distributed in the hope that it will be useful,
18			but WITHOUT ANY WARRANTY; without even the implied warranty of
19			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20			GNU General Public License for more details.
21
22			You should have received a copy of the GNU General Public License
23			along with this program; if not, write to the Free Software
24			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26			The authors can be reached via e-mail at crossfire-devel@real-time.com
27			*/
28
29			/**
30			* \file
31			* \date 2003-12-02
32			* Meta-server related functions.
33			*/
34
35			#include <global.h>
36
37			#ifndef WIN32 /* ---win32 exclude unix header files */
38			#include <sys/types.h>
39			#include <sys/socket.h>
40			#include <netinet/in.h>
41			#include <netdb.h>
42			#include <arpa/inet.h>
43
44			#endif /* end win32 */
45
46			static int metafd=-1;
47			static struct sockaddr_in sock;
48
49			/**
50			* Connects to metaserver.
51			*
52			* Its only called once. If we are not
53			* trying to contact the metaserver of the connection attempt fails, metafd will be
54			* set to -1. We use this instead of messing with the settings.meta_on so that
55			* that can be examined to at least see what the user was trying to do.
56			*/
57			void metaserver_init(void)
58			{
59
60			#ifdef WIN32 /* **win32 metaserver_init(): init win32 socket /
61			struct hostent *hostbn;
62			int temp = 1;
63			#endif
64
65			if (!settings.meta_on) {
66			metafd=-1;
67			return;
68			}
69
70			if (isdigit(settings.meta_server[0]))
71			sock.sin_addr.s_addr = inet_addr(settings.meta_server);
72			else {
73			struct hostent *hostbn = gethostbyname(settings.meta_server);
74			if (hostbn == NULL) {
75			LOG(llevDebug,"metaserver_init: Unable to resolve hostname %s\n", settings.meta_server);
76			return;
77			}
78			memcpy(&sock.sin_addr, hostbn->h_addr, hostbn->h_length);
79			}
80			#ifdef WIN32 /* **win32 metaserver_init(): init win32 socket /
81			ioctlsocket(metafd, FIONBIO , &temp);
82			#else
83			fcntl(metafd, F_SETFL, O_NONBLOCK);
84			#endif
85			if ((metafd=socket(AF_INET, SOCK_DGRAM, 0))==-1) {
86			LOG(llevDebug,"metaserver_init: Unable to create socket, err %d\n", errno);
87			return;
88			}
89			sock.sin_family = AF_INET;
90			sock.sin_port = htons(settings.meta_port);
91
92			/* No hostname specified, so lets try to figure one out */
93			if (settings.meta_host[0]==0) {
94			char hostname[MAX_BUF], domain[MAX_BUF];
95			if (gethostname(hostname, MAX_BUF-1)) {
96			LOG(llevDebug,"metaserver_init: gethostname failed - will not report hostname\n");
97			return;
98			}
99
100			#ifdef WIN32 /* **win32 metaserver_init(): gethostbyname! /
101			hostbn = gethostbyname(hostname);
102			if (hostbn != (struct hostent ) NULL) / quick hack */
103			memcpy(domain, hostbn->h_addr, hostbn->h_length);
104
105			if (hostbn == (struct hostent *) NULL) {
106			#else
107			if (getdomainname(domain, MAX_BUF-1)) {
108			#endif /* win32 */
109			LOG(llevDebug,"metaserver_init: getdomainname failed - will not report hostname\n");
110			return;
111			}
112			/* Potential overrun here but unlikely to occur */
113			sprintf(settings.meta_host,"%s.%s", hostname, domain);
114			}
115			}
116
117			/**
118			* Updates our info in the metaserver
119			*/
120			void metaserver_update(void)
121			{
122			char data[MAX_BUF], num_players=0;
123	root	1.2	#define CAT2_SUXX
124			#ifdef CAT2_SUXX
125	root	1.4	num_players += 20;
126	root	1.2	#endif
127	root	1.1	player *pl;
128
129			if (metafd == -1) return; /* No valid connection */
130
131			/* We could use socket_info.nconns, but that is not quite as accurate,
132			* as connections in the progress of being established, are listening
133			* but don't have a player, etc. This operation below should not be that
134			* costly.
135			*/
136	root	1.5	for (pl=first_player; pl!=NULL; pl=pl->next)
137	root	1.6	if (!pl->hidden && pl->ob->map) num_players++;
138	root	1.1
139	elmex	1.3	sprintf(data,"%s\|%d\|%s\|%s\|%d\|%d\|%ld", settings.meta_host, num_players, VERSION "+",
140	root	1.1	settings.meta_comment, cst_tot.ibytes, cst_tot.obytes,
141			(long)time(NULL) - cst_tot.time_start);
142			if (sendto(metafd, data, strlen(data), 0, (struct sockaddr *)&sock, sizeof(sock))<0) {
143			LOG(llevDebug,"metaserver_update: sendto failed, err = %d\n", errno);
144			}
145			}
146