2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2002 Mathieu Olivier
4 Copyright (C) 2003 Forest Hale
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 // for secure rcon authentication
32 #define QWMASTER_PORT 27000
33 #define DPMASTER_PORT 27950
35 // note this defaults on for dedicated servers, off for listen servers
36 cvar_t sv_public = {0, "sv_public", "0", "1: advertises this server on the master server (so that players can find it in the server browser); 0: allow direct queries only; -1: do not respond to direct queries; -2: do not allow anyone to connect; -3: already block at getchallenge level"};
37 cvar_t sv_public_rejectreason = {0, "sv_public_rejectreason", "The server is closing.", "Rejection reason for connects when sv_public is -2"};
38 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
39 extern cvar_t sv_status_privacy;
41 static cvar_t sv_masters [] =
43 {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
44 {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
45 {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
46 {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
47 {0, "sv_masterextra1", "69.59.212.88", "ghdigital.com - default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
48 {0, "sv_masterextra2", "64.22.107.125", "dpmaster.deathmask.net - default master server 2 (admin: Willis)"}, // admin: Willis
49 {0, "sv_masterextra3", "92.62.40.73", "dpmaster.tchr.no - default master server 3 (admin: tChr)"}, // admin: tChr
51 {0, "sv_masterextra4", "[2001:41d0:2:1628::4450]:27950", "dpmaster.div0.qc.to - default master server 4 (admin: divVerent)"}, // admin: divVerent
56 static cvar_t sv_qwmasters [] =
58 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
59 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
60 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
61 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
62 {0, "sv_qwmasterextra1", "master.quakeservers.net:27000", "Global master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra2", "asgaard.morphos-team.net:27000", "Global master server. (admin: unknown)"},
64 {0, "sv_qwmasterextra3", "qwmaster.ocrana.de:27000", "German master server. (admin: unknown)"},
65 {0, "sv_qwmasterextra4", "masterserver.exhale.de:27000", "German master server. (admin: unknown)"},
66 {0, "sv_qwmasterextra5", "qwmaster.fodquake.net:27000", "Global master server. (admin: unknown)"},
70 static double nextheartbeattime = 0;
72 sizebuf_t net_message;
73 static unsigned char net_message_buf[NET_MAXMESSAGE];
75 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
76 cvar_t net_connecttimeout = {0, "net_connecttimeout","15", "after requesting a connection, the client must reply within this many seconds or be dropped (cuts down on connect floods). Must be above 10 seconds."};
77 cvar_t net_connectfloodblockingtimeout = {0, "net_connectfloodblockingtimeout", "5", "when a connection packet is received, it will block all future connect packets from that IP address for this many seconds (cuts down on connect floods)"};
78 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
79 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
81 cvar_t cl_netlocalping = {0, "cl_netlocalping","0", "lags local loopback connection by this much ping time (useful to play more fairly on your own server with people with higher pings)"};
82 static cvar_t cl_netpacketloss_send = {0, "cl_netpacketloss_send","0", "drops this percentage of outgoing packets, useful for testing network protocol robustness (jerky movement, prediction errors, etc)"};
83 static cvar_t cl_netpacketloss_receive = {0, "cl_netpacketloss_receive","0", "drops this percentage of incoming packets, useful for testing network protocol robustness (jerky movement, effects failing to start, sounds failing to play, etc)"};
84 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
85 static cvar_t net_slist_queriesperframe = {0, "net_slist_queriesperframe", "4", "maximum number of server information requests to send each rendered frame (guards against low framerates causing problems)"};
86 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
87 static cvar_t net_slist_pause = {0, "net_slist_pause", "0", "when set to 1, the server list won't update until it is set back to 0"};
88 static cvar_t net_slist_maxtries = {0, "net_slist_maxtries", "3", "how many times to ask the same server for information (more times gives better ping reports but takes longer)"};
89 static cvar_t net_slist_favorites = {CVAR_SAVE | CVAR_NQUSERINFOHACK, "net_slist_favorites", "", "contains a list of IP addresses and ports to always query explicitly"};
90 static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific) to be sent to querying clients"};
91 static cvar_t gameversion_min = {0, "gameversion_min", "-1", "minimum version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible; if -1, gameversion is used alone"};
92 static cvar_t gameversion_max = {0, "gameversion_max", "-1", "maximum version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible; if -1, gameversion is used alone"};
93 static cvar_t rcon_restricted_password = {CVAR_PRIVATE, "rcon_restricted_password", "", "password to authenticate rcon commands in restricted mode; may be set to a string of the form user1:pass1 user2:pass2 user3:pass3 to allow multiple user accounts - the client then has to specify ONE of these combinations"};
94 static cvar_t rcon_restricted_commands = {0, "rcon_restricted_commands", "", "allowed commands for rcon when the restricted mode password was used"};
95 static cvar_t rcon_secure_maxdiff = {0, "rcon_secure_maxdiff", "5", "maximum time difference between rcon request and server system clock (to protect against replay attack)"};
96 extern cvar_t rcon_secure;
97 extern cvar_t rcon_secure_challengetimeout;
99 /* statistic counters */
100 static int packetsSent = 0;
101 static int packetsReSent = 0;
102 static int packetsReceived = 0;
103 static int receivedDuplicateCount = 0;
104 static int droppedDatagrams = 0;
106 static int unreliableMessagesSent = 0;
107 static int unreliableMessagesReceived = 0;
108 static int reliableMessagesSent = 0;
109 static int reliableMessagesReceived = 0;
111 double masterquerytime = -1000;
112 int masterquerycount = 0;
113 int masterreplycount = 0;
114 int serverquerycount = 0;
115 int serverreplycount = 0;
117 challenge_t challenge[MAX_CHALLENGES];
119 /// this is only false if there are still servers left to query
120 static qboolean serverlist_querysleep = true;
121 static qboolean serverlist_paused = false;
122 /// this is pushed a second or two ahead of realtime whenever a master server
123 /// reply is received, to avoid issuing queries while master replies are still
124 /// flooding in (which would make a mess of the ping times)
125 static double serverlist_querywaittime = 0;
127 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
128 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
129 static unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
130 static unsigned char cryptoreadbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
132 static int cl_numsockets;
133 static lhnetsocket_t *cl_sockets[16];
134 static int sv_numsockets;
135 static lhnetsocket_t *sv_sockets[16];
137 netconn_t *netconn_list = NULL;
138 mempool_t *netconn_mempool = NULL;
139 void *netconn_mutex = NULL;
141 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
142 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
143 cvar_t net_address = {0, "net_address", "", "network address to open ipv4 ports on (if empty, use default interfaces)"};
144 cvar_t net_address_ipv6 = {0, "net_address_ipv6", "", "network address to open ipv6 ports on (if empty, use default interfaces)"};
146 char cl_net_extresponse[NET_EXTRESPONSE_MAX][1400];
147 int cl_net_extresponse_count = 0;
148 int cl_net_extresponse_last = 0;
150 char sv_net_extresponse[NET_EXTRESPONSE_MAX][1400];
151 int sv_net_extresponse_count = 0;
152 int sv_net_extresponse_last = 0;
154 // ServerList interface
155 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
156 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
158 serverlist_infofield_t serverlist_sortbyfield;
159 int serverlist_sortflags;
161 int serverlist_viewcount = 0;
162 unsigned short serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
164 int serverlist_maxcachecount = 0;
165 int serverlist_cachecount = 0;
166 serverlist_entry_t *serverlist_cache = NULL;
168 qboolean serverlist_consoleoutput;
170 static int nFavorites = 0;
171 static lhnetaddress_t favorites[MAX_FAVORITESERVERS];
172 static int nFavorites_idfp = 0;
173 static char favorites_idfp[MAX_FAVORITESERVERS][FP64_SIZE+1];
175 void NetConn_UpdateFavorites(void)
180 p = net_slist_favorites.string;
181 while((size_t) nFavorites < sizeof(favorites) / sizeof(*favorites) && COM_ParseToken_Console(&p))
183 if(com_token[0] != '[' && strlen(com_token) == FP64_SIZE && !strchr(com_token, '.'))
184 // currently 44 bytes, longest possible IPv6 address: 39 bytes, so this works
185 // (if v6 address contains port, it must start with '[')
187 strlcpy(favorites_idfp[nFavorites_idfp], com_token, sizeof(favorites_idfp[nFavorites_idfp]));
192 if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000))
198 /// helper function to insert a value into the viewset
199 /// spare entries will be removed
200 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
203 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
204 i = serverlist_viewcount++;
206 i = SERVERLIST_VIEWLISTSIZE - 1;
209 for( ; i > index ; i-- )
210 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
212 serverlist_viewlist[index] = (int)(entry - serverlist_cache);
215 /// we suppose serverlist_viewcount to be valid, ie > 0
216 static void _ServerList_ViewList_Helper_Remove( int index )
218 serverlist_viewcount--;
219 for( ; index < serverlist_viewcount ; index++ )
220 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
223 /// \returns true if A should be inserted before B
224 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
226 int result = 0; // > 0 if for numbers A > B and for text if A < B
228 if( serverlist_sortflags & SLSF_FAVORITESFIRST )
230 if(A->info.isfavorite != B->info.isfavorite)
231 return A->info.isfavorite;
234 switch( serverlist_sortbyfield ) {
236 result = A->info.ping - B->info.ping;
238 case SLIF_MAXPLAYERS:
239 result = A->info.maxplayers - B->info.maxplayers;
241 case SLIF_NUMPLAYERS:
242 result = A->info.numplayers - B->info.numplayers;
245 result = A->info.numbots - B->info.numbots;
248 result = A->info.numhumans - B->info.numhumans;
251 result = A->info.freeslots - B->info.freeslots;
254 result = A->info.protocol - B->info.protocol;
257 result = strcmp( B->info.cname, A->info.cname );
260 result = strcasecmp( B->info.game, A->info.game );
263 result = strcasecmp( B->info.map, A->info.map );
266 result = strcasecmp( B->info.mod, A->info.mod );
269 result = strcasecmp( B->info.name, A->info.name );
272 result = strcasecmp( B->info.qcstatus, A->info.qcstatus ); // not really THAT useful, though
274 case SLIF_ISFAVORITE:
275 result = !!B->info.isfavorite - !!A->info.isfavorite;
278 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
284 if( serverlist_sortflags & SLSF_DESCENDING )
290 // if the chosen sort key is identical, sort by index
291 // (makes this a stable sort, so that later replies from servers won't
292 // shuffle the servers around when they have the same ping)
296 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
298 // This should actually be done with some intermediate and end-of-function return
310 case SLMO_GREATEREQUAL:
312 case SLMO_NOTCONTAIN:
313 case SLMO_STARTSWITH:
314 case SLMO_NOTSTARTSWITH:
317 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
322 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
325 char bufferA[ 1400 ], bufferB[ 1400 ]; // should be more than enough
326 COM_StringDecolorize(A, 0, bufferA, sizeof(bufferA), false);
327 for (i = 0;i < (int)sizeof(bufferA)-1 && bufferA[i];i++)
328 bufferA[i] = (bufferA[i] >= 'A' && bufferA[i] <= 'Z') ? (bufferA[i] + 'a' - 'A') : bufferA[i];
330 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
331 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
334 // Same here, also using an intermediate & final return would be more appropriate
338 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
339 case SLMO_NOTCONTAIN:
340 return !*bufferB || !strstr( bufferA, bufferB );
341 case SLMO_STARTSWITH:
342 //Con_Printf("startsWith: %s %s\n", bufferA, bufferB);
343 return *bufferB && !memcmp(bufferA, bufferB, strlen(bufferB));
344 case SLMO_NOTSTARTSWITH:
345 return !*bufferB || memcmp(bufferA, bufferB, strlen(bufferB));
347 return strcmp( bufferA, bufferB ) < 0;
349 return strcmp( bufferA, bufferB ) <= 0;
351 return strcmp( bufferA, bufferB ) == 0;
353 return strcmp( bufferA, bufferB ) > 0;
355 return strcmp( bufferA, bufferB ) != 0;
356 case SLMO_GREATEREQUAL:
357 return strcmp( bufferA, bufferB ) >= 0;
359 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
364 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
366 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
368 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
370 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
372 if( !_ServerList_CompareInt( info->numbots, mask->tests[SLIF_NUMBOTS], mask->info.numbots ) )
374 if( !_ServerList_CompareInt( info->numhumans, mask->tests[SLIF_NUMHUMANS], mask->info.numhumans ) )
376 if( !_ServerList_CompareInt( info->freeslots, mask->tests[SLIF_FREESLOTS], mask->info.freeslots ) )
378 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
380 if( *mask->info.cname
381 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
384 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
387 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
390 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
393 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
395 if( *mask->info.qcstatus
396 && !_ServerList_CompareStr( info->qcstatus, mask->tests[SLIF_QCSTATUS], mask->info.qcstatus ) )
398 if( *mask->info.players
399 && !_ServerList_CompareStr( info->players, mask->tests[SLIF_PLAYERS], mask->info.players ) )
401 if( !_ServerList_CompareInt( info->isfavorite, mask->tests[SLIF_ISFAVORITE], mask->info.isfavorite ))
406 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
408 int start, end, mid, i;
411 // reject incompatible servers
413 entry->info.gameversion != gameversion.integer
416 gameversion_min.integer >= 0 // min/max range set by user/mod?
417 && gameversion_max.integer >= 0
418 && gameversion_min.integer <= entry->info.gameversion // version of server in min/max range?
419 && gameversion_max.integer >= entry->info.gameversion
424 // refresh the "favorite" status
425 entry->info.isfavorite = false;
426 if(LHNETADDRESS_FromString(&addr, entry->info.cname, 26000))
428 char idfp[FP64_SIZE+1];
429 for(i = 0; i < nFavorites; ++i)
431 if(LHNETADDRESS_Compare(&addr, &favorites[i]) == 0)
433 entry->info.isfavorite = true;
437 if(Crypto_RetrieveHostKey(&addr, 0, NULL, 0, idfp, sizeof(idfp), NULL))
439 for(i = 0; i < nFavorites_idfp; ++i)
441 if(!strcmp(idfp, favorites_idfp[i]))
443 entry->info.isfavorite = true;
450 // FIXME: change this to be more readable (...)
451 // now check whether it passes through the masks
452 for( start = 0 ; start < SERVERLIST_ANDMASKCOUNT && serverlist_andmasks[start].active; start++ )
453 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
456 for( start = 0 ; start < SERVERLIST_ORMASKCOUNT && serverlist_ormasks[start].active ; start++ )
457 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
459 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
462 if( !serverlist_viewcount ) {
463 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
466 // ok, insert it, we just need to find out where exactly:
469 // check whether to insert it as new first item
470 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(0) ) ) {
471 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
473 } // check whether to insert it as new last item
474 else if( !_ServerList_Entry_Compare( entry, ServerList_GetViewEntry(serverlist_viewcount - 1) ) ) {
475 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
479 end = serverlist_viewcount - 1;
480 while( end > start + 1 )
482 mid = (start + end) / 2;
483 // test the item that lies in the middle between start and end
484 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(mid) ) )
485 // the item has to be in the upper half
488 // the item has to be in the lower half
491 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
494 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
497 for( i = 0; i < serverlist_viewcount; i++ )
499 if (ServerList_GetViewEntry(i) == entry)
501 _ServerList_ViewList_Helper_Remove(i);
507 void ServerList_RebuildViewList(void)
511 serverlist_viewcount = 0;
512 for( i = 0 ; i < serverlist_cachecount ; i++ ) {
513 serverlist_entry_t *entry = &serverlist_cache[i];
514 // also display entries that are currently being refreshed [11/8/2007 Black]
515 if( entry->query == SQS_QUERIED || entry->query == SQS_REFRESHING )
516 ServerList_ViewList_Insert( entry );
520 void ServerList_ResetMasks(void)
524 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
525 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
526 // numbots needs to be compared to -1 to always succeed
527 for(i = 0; i < SERVERLIST_ANDMASKCOUNT; ++i)
528 serverlist_andmasks[i].info.numbots = -1;
529 for(i = 0; i < SERVERLIST_ORMASKCOUNT; ++i)
530 serverlist_ormasks[i].info.numbots = -1;
533 void ServerList_GetPlayerStatistics(int *numplayerspointer, int *maxplayerspointer)
536 int numplayers = 0, maxplayers = 0;
537 for (i = 0;i < serverlist_cachecount;i++)
539 if (serverlist_cache[i].query == SQS_QUERIED)
541 numplayers += serverlist_cache[i].info.numhumans;
542 maxplayers += serverlist_cache[i].info.maxplayers;
545 *numplayerspointer = numplayers;
546 *maxplayerspointer = maxplayers;
550 static void _ServerList_Test(void)
553 if (serverlist_maxcachecount <= 1024)
555 serverlist_maxcachecount = 1024;
556 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
558 for( i = 0 ; i < 1024 ; i++ ) {
559 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
560 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
561 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
562 serverlist_cache[serverlist_cachecount].finished = true;
563 dpsnprintf( serverlist_cache[serverlist_cachecount].line1, sizeof(serverlist_cache[serverlist_cachecount].info.line1), "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
564 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
565 serverlist_cachecount++;
570 void ServerList_QueryList(qboolean resetcache, qboolean querydp, qboolean queryqw, qboolean consoleoutput)
572 masterquerytime = realtime;
573 masterquerycount = 0;
574 masterreplycount = 0;
576 serverquerycount = 0;
577 serverreplycount = 0;
578 serverlist_cachecount = 0;
579 serverlist_viewcount = 0;
580 serverlist_maxcachecount = 0;
581 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
583 // refresh all entries
585 for( n = 0 ; n < serverlist_cachecount ; n++ ) {
586 serverlist_entry_t *entry = &serverlist_cache[ n ];
587 entry->query = SQS_REFRESHING;
588 entry->querycounter = 0;
591 serverlist_consoleoutput = consoleoutput;
593 //_ServerList_Test();
595 NetConn_QueryMasters(querydp, queryqw);
600 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
604 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
605 Thread_LockMutex(netconn_mutex);
606 length = LHNET_Read(mysocket, data, maxlength, peeraddress);
607 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
608 Thread_UnlockMutex(netconn_mutex);
611 if (cl_netpacketloss_receive.integer)
612 for (i = 0;i < cl_numsockets;i++)
613 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_receive.integer)
615 if (developer_networking.integer)
617 char addressstring[128], addressstring2[128];
618 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
621 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
622 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length, addressstring2);
623 Com_HexDumpToConsole((unsigned char *)data, length);
626 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length);
631 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
635 if (cl_netpacketloss_send.integer)
636 for (i = 0;i < cl_numsockets;i++)
637 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_send.integer)
639 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
640 Thread_LockMutex(netconn_mutex);
641 ret = LHNET_Write(mysocket, data, length, peeraddress);
642 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
643 Thread_UnlockMutex(netconn_mutex);
644 if (developer_networking.integer)
646 char addressstring[128], addressstring2[128];
647 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
648 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
649 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", (void *)mysocket, addressstring, (void *)data, length, (void *)peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
650 Com_HexDumpToConsole((unsigned char *)data, length);
655 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
657 // note this does not include the trailing NULL because we add that in the parser
658 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
661 qboolean NetConn_CanSend(netconn_t *conn)
663 conn->outgoing_packetcounter = (conn->outgoing_packetcounter + 1) % NETGRAPH_PACKETS;
664 conn->outgoing_netgraph[conn->outgoing_packetcounter].time = realtime;
665 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
666 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
667 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes = NETGRAPH_NOPACKET;
668 if (realtime > conn->cleartime)
672 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_CHOKEDPACKET;
677 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol, int rate, qboolean quakesignon_suppressreliables)
681 // if this packet was supposedly choked, but we find ourselves sending one
682 // anyway, make sure the size counting starts at zero
683 // (this mostly happens on level changes and disconnects and such)
684 if (conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes == NETGRAPH_CHOKEDPACKET)
685 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
687 if (protocol == PROTOCOL_QUAKEWORLD)
690 qboolean sendreliable;
692 // note that it is ok to send empty messages to the qw server,
693 // otherwise it won't respond to us at all
695 sendreliable = false;
696 // if the remote side dropped the last reliable message, resend it
697 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
699 // if the reliable transmit buffer is empty, copy the current message out
700 if (!conn->sendMessageLength && conn->message.cursize)
702 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
703 conn->sendMessageLength = conn->message.cursize;
704 SZ_Clear(&conn->message); // clear the message buffer
705 conn->qw.reliable_sequence ^= 1;
708 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
709 StoreLittleLong(sendbuffer, (unsigned int)conn->outgoing_unreliable_sequence | ((unsigned int)sendreliable<<31));
710 // last received unreliable packet number, and last received reliable packet number (0 or 1)
711 StoreLittleLong(sendbuffer + 4, (unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
713 conn->outgoing_unreliable_sequence++;
714 // client sends qport in every packet
715 if (conn == cls.netcon)
717 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
719 // also update cls.qw_outgoing_sequence
720 cls.qw_outgoing_sequence = conn->outgoing_unreliable_sequence;
722 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
724 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
728 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
730 // add the reliable message if there is one
733 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += conn->sendMessageLength + 28;
734 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
735 packetLen += conn->sendMessageLength;
736 conn->qw.last_reliable_sequence = conn->outgoing_unreliable_sequence;
739 // add the unreliable message if possible
740 if (packetLen + data->cursize <= 1400)
742 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += data->cursize + 28;
743 memcpy(sendbuffer + packetLen, data->data, data->cursize);
744 packetLen += data->cursize;
747 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
750 unreliableMessagesSent++;
752 totallen += packetLen + 28;
756 unsigned int packetLen;
757 unsigned int dataLen;
762 // if a reliable message fragment has been lost, send it again
763 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
765 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
767 dataLen = conn->sendMessageLength;
772 dataLen = MAX_PACKETFRAGMENT;
776 packetLen = NET_HEADERSIZE + dataLen;
778 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
779 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence - 1);
780 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
782 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
784 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
785 if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
787 conn->lastSendTime = realtime;
791 totallen += sendmelen + 28;
794 // if we have a new reliable message to send, do so
795 if (!conn->sendMessageLength && conn->message.cursize && !quakesignon_suppressreliables)
797 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
799 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
800 conn->message.overflowed = true;
804 if (developer_networking.integer && conn == cls.netcon)
806 Con_Print("client sending reliable message to server:\n");
807 SZ_HexDumpToConsole(&conn->message);
810 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
811 conn->sendMessageLength = conn->message.cursize;
812 SZ_Clear(&conn->message);
814 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
816 dataLen = conn->sendMessageLength;
821 dataLen = MAX_PACKETFRAGMENT;
825 packetLen = NET_HEADERSIZE + dataLen;
827 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
828 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
829 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
831 conn->nq.sendSequence++;
833 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
835 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
837 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
839 conn->lastSendTime = realtime;
841 reliableMessagesSent++;
843 totallen += sendmelen + 28;
846 // if we have an unreliable message to send, do so
849 packetLen = NET_HEADERSIZE + data->cursize;
851 if (packetLen > (int)sizeof(sendbuffer))
853 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
857 StoreBigLong(sendbuffer, packetLen | NETFLAG_UNRELIABLE);
858 StoreBigLong(sendbuffer + 4, conn->outgoing_unreliable_sequence);
859 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
861 conn->outgoing_unreliable_sequence++;
863 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
865 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
867 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
870 unreliableMessagesSent++;
872 totallen += sendmelen + 28;
876 // delay later packets to obey rate limit
877 if (conn->cleartime < realtime - 0.1)
878 conn->cleartime = realtime - 0.1;
879 conn->cleartime = conn->cleartime + (double)totallen / (double)rate;
880 if (conn->cleartime < realtime)
881 conn->cleartime = realtime;
886 qboolean NetConn_HaveClientPorts(void)
888 return !!cl_numsockets;
891 qboolean NetConn_HaveServerPorts(void)
893 return !!sv_numsockets;
896 void NetConn_CloseClientPorts(void)
898 for (;cl_numsockets > 0;cl_numsockets--)
899 if (cl_sockets[cl_numsockets - 1])
900 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
903 void NetConn_OpenClientPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport)
905 lhnetaddress_t address;
908 char addressstring2[1024];
909 if (addressstring && addressstring[0])
910 success = LHNETADDRESS_FromString(&address, addressstring, defaultport);
912 success = LHNETADDRESS_FromPort(&address, addresstype, defaultport);
915 if ((s = LHNET_OpenSocket_Connectionless(&address)))
917 cl_sockets[cl_numsockets++] = s;
918 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
919 if (addresstype != LHNETADDRESSTYPE_LOOP)
920 Con_Printf("Client opened a socket on address %s\n", addressstring2);
924 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
925 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
929 Con_Printf("Client unable to parse address %s\n", addressstring);
932 void NetConn_OpenClientPorts(void)
935 NetConn_CloseClientPorts();
936 port = bound(0, cl_netport.integer, 65535);
937 if (cl_netport.integer != port)
938 Cvar_SetValueQuick(&cl_netport, port);
940 Con_Printf("Client using an automatically assigned port\n");
942 Con_Printf("Client using port %i\n", port);
943 NetConn_OpenClientPort(NULL, LHNETADDRESSTYPE_LOOP, 2);
944 NetConn_OpenClientPort(net_address.string, LHNETADDRESSTYPE_INET4, port);
946 NetConn_OpenClientPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port);
950 void NetConn_CloseServerPorts(void)
952 for (;sv_numsockets > 0;sv_numsockets--)
953 if (sv_sockets[sv_numsockets - 1])
954 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
957 qboolean NetConn_OpenServerPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport, int range)
959 lhnetaddress_t address;
962 char addressstring2[1024];
965 for (port = defaultport; port <= defaultport + range; port++)
967 if (addressstring && addressstring[0])
968 success = LHNETADDRESS_FromString(&address, addressstring, port);
970 success = LHNETADDRESS_FromPort(&address, addresstype, port);
973 if ((s = LHNET_OpenSocket_Connectionless(&address)))
975 sv_sockets[sv_numsockets++] = s;
976 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
977 if (addresstype != LHNETADDRESSTYPE_LOOP)
978 Con_Printf("Server listening on address %s\n", addressstring2);
983 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
984 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
989 Con_Printf("Server unable to parse address %s\n", addressstring);
990 // if it cant parse one address, it wont be able to parse another for sure
997 void NetConn_OpenServerPorts(int opennetports)
1000 NetConn_CloseServerPorts();
1001 NetConn_UpdateSockets();
1002 port = bound(0, sv_netport.integer, 65535);
1005 Con_Printf("Server using port %i\n", port);
1006 if (sv_netport.integer != port)
1007 Cvar_SetValueQuick(&sv_netport, port);
1008 if (cls.state != ca_dedicated)
1009 NetConn_OpenServerPort(NULL, LHNETADDRESSTYPE_LOOP, 1, 1);
1013 qboolean ip4success = NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1014 NetConn_OpenServerPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port, ip4success ? 1 : 100);
1016 NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1019 if (sv_numsockets == 0)
1020 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
1023 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
1025 int i, a = LHNETADDRESS_GetAddressType(address);
1026 for (i = 0;i < cl_numsockets;i++)
1027 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
1028 return cl_sockets[i];
1032 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
1034 int i, a = LHNETADDRESS_GetAddressType(address);
1035 for (i = 0;i < sv_numsockets;i++)
1036 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
1037 return sv_sockets[i];
1041 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
1044 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
1045 conn->mysocket = mysocket;
1046 conn->peeraddress = *peeraddress;
1047 conn->lastMessageTime = realtime;
1048 conn->message.data = conn->messagedata;
1049 conn->message.maxsize = sizeof(conn->messagedata);
1050 conn->message.cursize = 0;
1051 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
1052 // reduce effectiveness of connection request floods
1053 conn->timeout = realtime + net_connecttimeout.value;
1054 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
1055 conn->next = netconn_list;
1056 netconn_list = conn;
1060 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
1061 void NetConn_Close(netconn_t *conn)
1064 // remove connection from list
1066 // allow the client to reconnect immediately
1067 NetConn_ClearConnectFlood(&(conn->peeraddress));
1069 if (conn == netconn_list)
1070 netconn_list = conn->next;
1073 for (c = netconn_list;c;c = c->next)
1075 if (c->next == conn)
1077 c->next = conn->next;
1081 // not found in list, we'll avoid crashing here...
1089 static int clientport = -1;
1090 static int clientport2 = -1;
1091 static int hostport = -1;
1092 void NetConn_UpdateSockets(void)
1096 if (cls.state != ca_dedicated)
1098 if (clientport2 != cl_netport.integer)
1100 clientport2 = cl_netport.integer;
1101 if (cls.state == ca_connected)
1102 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
1104 if (cls.state == ca_disconnected && clientport != clientport2)
1106 clientport = clientport2;
1107 NetConn_CloseClientPorts();
1109 if (cl_numsockets == 0)
1110 NetConn_OpenClientPorts();
1113 if (hostport != sv_netport.integer)
1115 hostport = sv_netport.integer;
1117 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
1120 for (j = 0;j < MAX_RCONS;j++)
1122 i = (cls.rcon_ringpos + j + 1) % MAX_RCONS;
1123 if(cls.rcon_commands[i][0])
1125 if(realtime > cls.rcon_timeout[i])
1128 LHNETADDRESS_ToString(&cls.rcon_addresses[i], s, sizeof(s), true);
1129 Con_Printf("rcon to %s (for command %s) failed: challenge request timed out\n", s, cls.rcon_commands[i]);
1130 cls.rcon_commands[i][0] = 0;
1138 static int NetConn_ReceivedMessage(netconn_t *conn, const unsigned char *data, size_t length, protocolversion_t protocol, double newtimeout)
1140 int originallength = length;
1144 if (protocol == PROTOCOL_QUAKEWORLD)
1146 int sequence, sequence_ack;
1147 int reliable_ack, reliable_message;
1151 sequence = LittleLong(*((int *)(data + 0)));
1152 sequence_ack = LittleLong(*((int *)(data + 4)));
1156 if (conn != cls.netcon)
1161 // TODO: use qport to identify that this client really is who they say they are? (and elsewhere in the code to identify the connection without a port match?)
1162 //qport = LittleShort(*((int *)(data + 8)));
1168 reliable_message = (sequence >> 31) & 1;
1169 reliable_ack = (sequence_ack >> 31) & 1;
1170 sequence &= ~(1<<31);
1171 sequence_ack &= ~(1<<31);
1172 if (sequence <= conn->qw.incoming_sequence)
1174 //Con_DPrint("Got a stale datagram\n");
1177 count = sequence - (conn->qw.incoming_sequence + 1);
1180 droppedDatagrams += count;
1181 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1184 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1185 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1186 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1187 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1188 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1191 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1192 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1193 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1194 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1195 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1196 if (reliable_ack == conn->qw.reliable_sequence)
1198 // received, now we will be able to send another reliable message
1199 conn->sendMessageLength = 0;
1200 reliableMessagesReceived++;
1202 conn->qw.incoming_sequence = sequence;
1203 if (conn == cls.netcon)
1204 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
1205 conn->qw.incoming_acknowledged = sequence_ack;
1206 conn->qw.incoming_reliable_acknowledged = reliable_ack;
1207 if (reliable_message)
1208 conn->qw.incoming_reliable_sequence ^= 1;
1209 conn->lastMessageTime = realtime;
1210 conn->timeout = realtime + newtimeout;
1211 unreliableMessagesReceived++;
1212 SZ_Clear(&net_message);
1213 SZ_Write(&net_message, data, length);
1221 unsigned int sequence;
1226 originallength = length;
1227 data = (const unsigned char *) Crypto_DecryptPacket(&conn->crypto, data, length, cryptoreadbuffer, &length, sizeof(cryptoreadbuffer));
1233 qlength = (unsigned int)BuffBigLong(data);
1234 flags = qlength & ~NETFLAG_LENGTH_MASK;
1235 qlength &= NETFLAG_LENGTH_MASK;
1236 // control packets were already handled
1237 if (!(flags & NETFLAG_CTL) && qlength == length)
1239 sequence = BuffBigLong(data + 4);
1243 if (flags & NETFLAG_UNRELIABLE)
1245 if (sequence >= conn->nq.unreliableReceiveSequence)
1247 if (sequence > conn->nq.unreliableReceiveSequence)
1249 count = sequence - conn->nq.unreliableReceiveSequence;
1250 droppedDatagrams += count;
1251 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1254 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1255 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1256 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1257 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1258 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1261 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1262 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1263 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1264 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1265 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1266 conn->nq.unreliableReceiveSequence = sequence + 1;
1267 conn->lastMessageTime = realtime;
1268 conn->timeout = realtime + newtimeout;
1269 unreliableMessagesReceived++;
1272 SZ_Clear(&net_message);
1273 SZ_Write(&net_message, data, length);
1279 // Con_DPrint("Got a stale datagram\n");
1282 else if (flags & NETFLAG_ACK)
1284 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes += originallength + 28;
1285 if (sequence == (conn->nq.sendSequence - 1))
1287 if (sequence == conn->nq.ackSequence)
1289 conn->nq.ackSequence++;
1290 if (conn->nq.ackSequence != conn->nq.sendSequence)
1291 Con_DPrint("ack sequencing error\n");
1292 conn->lastMessageTime = realtime;
1293 conn->timeout = realtime + newtimeout;
1294 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
1296 unsigned int packetLen;
1297 unsigned int dataLen;
1300 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
1301 memmove(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
1303 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
1305 dataLen = conn->sendMessageLength;
1310 dataLen = MAX_PACKETFRAGMENT;
1314 packetLen = NET_HEADERSIZE + dataLen;
1316 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
1317 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
1318 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1320 conn->nq.sendSequence++;
1322 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1323 if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
1325 conn->lastSendTime = realtime;
1330 conn->sendMessageLength = 0;
1333 // Con_DPrint("Duplicate ACK received\n");
1336 // Con_DPrint("Stale ACK received\n");
1339 else if (flags & NETFLAG_DATA)
1341 unsigned char temppacket[8];
1342 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes += originallength + 28;
1343 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes += 8 + 28;
1344 StoreBigLong(temppacket, 8 | NETFLAG_ACK);
1345 StoreBigLong(temppacket + 4, sequence);
1346 sendme = Crypto_EncryptPacket(&conn->crypto, temppacket, 8, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1348 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
1349 if (sequence == conn->nq.receiveSequence)
1351 conn->lastMessageTime = realtime;
1352 conn->timeout = realtime + newtimeout;
1353 conn->nq.receiveSequence++;
1354 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1355 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1356 conn->receiveMessageLength += length;
1358 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1359 "Dropping the message!\n", sequence );
1360 conn->receiveMessageLength = 0;
1363 if (flags & NETFLAG_EOM)
1365 reliableMessagesReceived++;
1366 length = conn->receiveMessageLength;
1367 conn->receiveMessageLength = 0;
1370 SZ_Clear(&net_message);
1371 SZ_Write(&net_message, conn->receiveMessage, length);
1378 receivedDuplicateCount++;
1386 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1389 cls.connect_trying = false;
1390 M_Update_Return_Reason("");
1391 // the connection request succeeded, stop current connection and set up a new connection
1393 // if we're connecting to a remote server, shut down any local server
1394 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1395 Host_ShutdownServer ();
1396 // allocate a net connection to keep track of things
1397 cls.netcon = NetConn_Open(mysocket, peeraddress);
1398 crypto = &cls.crypto;
1399 if(crypto && crypto->authenticated)
1401 Crypto_ServerFinishInstance(&cls.netcon->crypto, crypto);
1402 Con_Printf("%s connection to %s has been established: server is %s@%.*s, I am %.*s@%.*s\n",
1403 crypto->use_aes ? "Encrypted" : "Authenticated",
1404 cls.netcon->address,
1405 crypto->server_idfp[0] ? crypto->server_idfp : "-",
1406 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-",
1407 crypto_keyfp_recommended_length, crypto->client_idfp[0] ? crypto->client_idfp : "-",
1408 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-"
1411 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1412 key_dest = key_game;
1414 cls.demonum = -1; // not in the demo loop now
1415 cls.state = ca_connected;
1416 cls.signon = 0; // need all the signon messages before playing
1417 cls.protocol = initialprotocol;
1418 // reset move sequence numbering on this new connection
1419 cls.servermovesequence = 0;
1420 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1421 Cmd_ForwardStringToServer("new");
1422 if (cls.protocol == PROTOCOL_QUAKE)
1424 // write a keepalive (clc_nop) as it seems to greatly improve the
1425 // chances of connecting to a netquake server
1427 unsigned char buf[4];
1428 memset(&msg, 0, sizeof(msg));
1430 msg.maxsize = sizeof(buf);
1431 MSG_WriteChar(&msg, clc_nop);
1432 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000, false);
1436 int NetConn_IsLocalGame(void)
1438 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1443 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1447 serverlist_entry_t *entry = NULL;
1449 // search the cache for this server and update it
1450 for (n = 0;n < serverlist_cachecount;n++) {
1451 entry = &serverlist_cache[ n ];
1452 if (!strcmp(addressstring, entry->info.cname))
1456 if (n == serverlist_cachecount)
1458 // LAN search doesnt require an answer from the master server so we wont
1459 // know the ping nor will it be initialized already...
1462 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1465 if (serverlist_maxcachecount <= serverlist_cachecount)
1467 serverlist_maxcachecount += 64;
1468 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1470 entry = &serverlist_cache[n];
1472 memset(entry, 0, sizeof(*entry));
1473 // store the data the engine cares about (address and ping)
1474 strlcpy(entry->info.cname, addressstring, sizeof(entry->info.cname));
1475 entry->info.ping = 100000;
1476 entry->querytime = realtime;
1477 // if not in the slist menu we should print the server to console
1478 if (serverlist_consoleoutput)
1479 Con_Printf("querying %s\n", addressstring);
1480 ++serverlist_cachecount;
1482 // if this is the first reply from this server, count it as having replied
1483 pingtime = (int)((realtime - entry->querytime) * 1000.0 + 0.5);
1484 pingtime = bound(0, pingtime, 9999);
1485 if (entry->query == SQS_REFRESHING) {
1486 entry->info.ping = pingtime;
1487 entry->query = SQS_QUERIED;
1489 // convert to unsigned to catch the -1
1490 // I still dont like this but its better than the old 10000 magic ping number - as in easier to type and read :( [11/8/2007 Black]
1491 entry->info.ping = min((unsigned) entry->info.ping, (unsigned) pingtime);
1495 // other server info is updated by the caller
1499 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1501 serverlist_entry_t *entry = &serverlist_cache[n];
1502 serverlist_info_t *info = &entry->info;
1503 // update description strings for engine menu and console output
1504 dpsnprintf(entry->line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", info->ping >= 300 ? '1' : (info->ping >= 200 ? '3' : '7'), (int)info->ping, ((info->numhumans > 0 && info->numhumans < info->maxplayers) ? (info->numhumans >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1505 dpsnprintf(entry->line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game,
1507 info->gameversion != gameversion.integer
1510 gameversion_min.integer >= 0 // min/max range set by user/mod?
1511 && gameversion_max.integer >= 0
1512 && gameversion_min.integer <= info->gameversion // version of server in min/max range?
1513 && gameversion_max.integer >= info->gameversion
1516 info->mod, info->map);
1517 if (entry->query == SQS_QUERIED)
1519 if(!serverlist_paused)
1520 ServerList_ViewList_Remove(entry);
1522 // if not in the slist menu we should print the server to console (if wanted)
1523 else if( serverlist_consoleoutput )
1524 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1525 // and finally, update the view set
1526 if(!serverlist_paused)
1527 ServerList_ViewList_Insert( entry );
1528 // update the entry's state
1529 serverlist_cache[n].query = SQS_QUERIED;
1532 // returns true, if it's sensible to continue the processing
1533 static qboolean NetConn_ClientParsePacket_ServerList_PrepareQuery( int protocol, const char *ipstring, qboolean isfavorite ) {
1535 serverlist_entry_t *entry;
1537 // ignore the rest of the message if the serverlist is full
1538 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1540 // also ignore it if we have already queried it (other master server response)
1541 for( n = 0 ; n < serverlist_cachecount ; n++ )
1542 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1545 if( n < serverlist_cachecount ) {
1546 // the entry has already been queried once or
1550 if (serverlist_maxcachecount <= n)
1552 serverlist_maxcachecount += 64;
1553 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1556 entry = &serverlist_cache[n];
1558 memset(entry, 0, sizeof(entry));
1559 entry->protocol = protocol;
1560 // store the data the engine cares about (address and ping)
1561 strlcpy (entry->info.cname, ipstring, sizeof(entry->info.cname));
1563 entry->info.isfavorite = isfavorite;
1565 // no, then reset the ping right away
1566 entry->info.ping = -1;
1567 // we also want to increase the serverlist_cachecount then
1568 serverlist_cachecount++;
1571 entry->query = SQS_QUERYING;
1576 static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *senderaddress, const unsigned char *data, int length, qboolean isextended)
1579 if (serverlist_consoleoutput)
1580 Con_Printf("received DarkPlaces %sserver list...\n", isextended ? "extended " : "");
1583 char ipstring [128];
1586 if (data[0] == '\\')
1588 unsigned short port = data[5] * 256 + data[6];
1590 if (port != 0 && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF))
1591 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%hu", data[1], data[2], data[3], data[4], port);
1593 // move on to next address in packet
1598 else if (data[0] == '/' && isextended && length >= 19)
1600 unsigned short port = data[17] * 256 + data[18];
1607 /// \TODO: make some basic checks of the IP address (broadcast, ...)
1609 ifname = LHNETADDRESS_GetInterfaceName(senderaddress);
1612 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x%%%s]:%hu",
1613 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1614 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1620 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x]:%hu",
1621 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1622 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1627 // move on to next address in packet
1633 Con_Print("Error while parsing the server list\n");
1637 if (serverlist_consoleoutput && developer_networking.integer)
1638 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1640 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, ipstring, false ) ) {
1646 // begin or resume serverlist queries
1647 serverlist_querysleep = false;
1648 serverlist_querywaittime = realtime + 3;
1651 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1653 qboolean fromserver;
1654 int ret, c, control;
1656 char *string, addressstring2[128], ipstring[32];
1657 char stringbuf[16384];
1658 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1661 // quakeworld ingame packet
1662 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1664 // convert the address to a string incase we need it
1665 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1667 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1669 // received a command string - strip off the packaging and put it
1670 // into our string buffer with NULL termination
1673 length = min(length, (int)sizeof(stringbuf) - 1);
1674 memcpy(stringbuf, data, length);
1675 stringbuf[length] = 0;
1678 if (developer_networking.integer)
1680 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1681 Com_HexDumpToConsole(data, length);
1684 sendlength = sizeof(senddata) - 4;
1685 switch(Crypto_ClientParsePacket(string, length, senddata+4, &sendlength, peeraddress))
1687 case CRYPTO_NOMATCH:
1693 memcpy(senddata, "\377\377\377\377", 4);
1694 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
1697 case CRYPTO_DISCARD:
1700 memcpy(senddata, "\377\377\377\377", 4);
1701 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
1705 case CRYPTO_REPLACE:
1706 string = senddata+4;
1707 length = sendlength;
1711 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying)
1714 for (j = 0;j < MAX_RCONS;j++)
1716 // note: this value from i is used outside the loop too...
1717 i = (cls.rcon_ringpos + j) % MAX_RCONS;
1718 if(cls.rcon_commands[i][0])
1719 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[i]))
1728 dpsnprintf(argbuf, sizeof(argbuf), "%s %s", string + 10, cls.rcon_commands[i]);
1729 memcpy(buf, "\377\377\377\377srcon HMAC-MD4 CHALLENGE ", 29);
1731 e = strchr(rcon_password.string, ' ');
1732 n = e ? e-rcon_password.string : (int)strlen(rcon_password.string);
1734 if(HMAC_MDFOUR_16BYTES((unsigned char *) (buf + 29), (unsigned char *) argbuf, strlen(argbuf), (unsigned char *) rcon_password.string, n))
1738 strlcpy(buf + 46, argbuf, sizeof(buf) - 46);
1739 NetConn_Write(mysocket, buf, 46 + strlen(buf + 46), peeraddress);
1740 cls.rcon_commands[i][0] = 0;
1743 for (k = 0;k < MAX_RCONS;k++)
1744 if(cls.rcon_commands[k][0])
1745 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[k]))
1750 NetConn_WriteString(mysocket, "\377\377\377\377getchallenge", peeraddress);
1751 // extend the timeout on other requests as we asked for a challenge
1752 for (l = 0;l < MAX_RCONS;l++)
1753 if(cls.rcon_commands[l][0])
1754 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[l]))
1755 cls.rcon_timeout[l] = realtime + rcon_secure_challengetimeout.value;
1758 return true; // we used up the challenge, so we can't use this oen for connecting now anyway
1762 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1764 // darkplaces or quake3
1765 char protocolnames[1400];
1766 Protocol_Names(protocolnames, sizeof(protocolnames));
1767 Con_DPrintf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1768 M_Update_Return_Reason("Got challenge response");
1769 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1770 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1771 // TODO: add userinfo stuff here instead of using NQ commands?
1772 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s%s\\challenge\\%s", protocolnames, cls.connect_userinfo, string + 10), peeraddress);
1775 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1777 // darkplaces or quake3
1778 M_Update_Return_Reason("Accepted");
1779 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1782 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1784 char rejectreason[128];
1785 cls.connect_trying = false;
1787 length = min(length - 7, (int)sizeof(rejectreason) - 1);
1788 memcpy(rejectreason, string, length);
1789 rejectreason[length] = 0;
1790 M_Update_Return_Reason(rejectreason);
1793 if (length >= 15 && !memcmp(string, "statusResponse\x0A", 15))
1795 serverlist_info_t *info;
1800 // search the cache for this server and update it
1801 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1805 info = &serverlist_cache[n].info;
1810 info->qcstatus[0] = 0;
1811 info->players[0] = 0;
1812 info->protocol = -1;
1813 info->numplayers = 0;
1815 info->maxplayers = 0;
1816 info->gameversion = 0;
1818 p = strchr(string, '\n');
1821 *p = 0; // cut off the string there
1825 Con_Printf("statusResponse without players block?\n");
1827 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));
1828 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1829 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1830 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));
1831 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);
1832 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);
1833 if ((s = SearchInfostring(string, "bots" )) != NULL) info->numbots = atoi(s);
1834 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);
1835 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);
1836 if ((s = SearchInfostring(string, "qcstatus" )) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1837 if (p != NULL) strlcpy(info->players, p, sizeof(info->players));
1838 info->numhumans = info->numplayers - max(0, info->numbots);
1839 info->freeslots = info->maxplayers - info->numplayers;
1841 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1845 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1847 serverlist_info_t *info;
1851 // search the cache for this server and update it
1852 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1856 info = &serverlist_cache[n].info;
1861 info->qcstatus[0] = 0;
1862 info->players[0] = 0;
1863 info->protocol = -1;
1864 info->numplayers = 0;
1866 info->maxplayers = 0;
1867 info->gameversion = 0;
1869 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));
1870 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1871 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1872 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));
1873 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);
1874 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);
1875 if ((s = SearchInfostring(string, "bots" )) != NULL) info->numbots = atoi(s);
1876 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);
1877 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);
1878 if ((s = SearchInfostring(string, "qcstatus" )) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1879 info->numhumans = info->numplayers - max(0, info->numbots);
1880 info->freeslots = info->maxplayers - info->numplayers;
1882 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1886 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1888 // Extract the IP addresses
1891 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, false);
1894 if (!strncmp(string, "getserversExtResponse", 21) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1896 // Extract the IP addresses
1899 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, true);
1902 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1904 // Extract the IP addresses
1908 if (serverlist_consoleoutput)
1909 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1910 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1912 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1913 if (serverlist_consoleoutput && developer_networking.integer)
1914 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1916 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, ipstring, false ) ) {
1920 // move on to next address in packet
1924 // begin or resume serverlist queries
1925 serverlist_querysleep = false;
1926 serverlist_querywaittime = realtime + 3;
1929 if (!strncmp(string, "extResponse ", 12))
1931 ++cl_net_extresponse_count;
1932 if(cl_net_extresponse_count > NET_EXTRESPONSE_MAX)
1933 cl_net_extresponse_count = NET_EXTRESPONSE_MAX;
1934 cl_net_extresponse_last = (cl_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
1935 dpsnprintf(cl_net_extresponse[cl_net_extresponse_last], sizeof(cl_net_extresponse[cl_net_extresponse_last]), "\"%s\" %s", addressstring2, string + 12);
1938 if (!strncmp(string, "ping", 4))
1940 if (developer_extra.integer)
1941 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
1942 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1945 if (!strncmp(string, "ack", 3))
1947 // QuakeWorld compatibility
1948 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1950 // challenge message
1951 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1952 M_Update_Return_Reason("Got QuakeWorld challenge response");
1953 cls.qw_qport = qport.integer;
1954 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1955 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1956 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo, cls.connect_userinfo), peeraddress);
1959 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1962 M_Update_Return_Reason("QuakeWorld Accepted");
1963 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1966 if (length > 2 && !memcmp(string, "n\\", 2))
1968 serverlist_info_t *info;
1972 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1973 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1976 // search the cache for this server and update it
1977 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1981 info = &serverlist_cache[n].info;
1982 strlcpy(info->game, "QuakeWorld", sizeof(info->game));
1983 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1984 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1985 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1987 info->numplayers = 0; // updated below
1988 info->numhumans = 0; // updated below
1989 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1990 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1992 // count active players on server
1993 // (we could gather more info, but we're just after the number)
1994 s = strchr(string, '\n');
1998 while (s < string + length)
2000 for (;s < string + length && *s != '\n';s++)
2002 if (s >= string + length)
2010 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2014 if (string[0] == 'n')
2017 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
2019 // we may not have liked the packet, but it was a command packet, so
2020 // we're done processing this packet now
2023 // quakeworld ingame packet
2024 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2027 CL_ParseServerMessage();
2030 // netquake control packets, supported for compatibility only
2031 if (length >= 5 && (control = BuffBigLong(data)) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length && !ENCRYPTION_REQUIRED)
2034 serverlist_info_t *info;
2038 SZ_Clear(&net_message);
2039 SZ_Write(&net_message, data, length);
2045 if (developer_extra.integer)
2046 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
2047 if (cls.connect_trying)
2049 lhnetaddress_t clientportaddress;
2050 clientportaddress = *peeraddress;
2051 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong());
2052 // extra ProQuake stuff
2054 cls.proquake_servermod = MSG_ReadByte(); // MOD_PROQUAKE
2056 cls.proquake_servermod = 0;
2058 cls.proquake_serverversion = MSG_ReadByte(); // version * 10
2060 cls.proquake_serverversion = 0;
2062 cls.proquake_serverflags = MSG_ReadByte(); // flags (mainly PQF_CHEATFREE)
2064 cls.proquake_serverflags = 0;
2065 if (cls.proquake_servermod == 1)
2066 Con_Printf("Connected to ProQuake %.1f server, enabling precise aim\n", cls.proquake_serverversion / 10.0f);
2067 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
2068 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
2069 M_Update_Return_Reason("Accepted");
2070 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
2074 if (developer_extra.integer)
2075 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
2076 cls.connect_trying = false;
2077 M_Update_Return_Reason((char *)MSG_ReadString());
2079 case CCREP_SERVER_INFO:
2080 if (developer_extra.integer)
2081 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
2082 // LordHavoc: because the quake server may report weird addresses
2083 // we just ignore it and keep the real address
2085 // search the cache for this server and update it
2086 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2090 info = &serverlist_cache[n].info;
2091 strlcpy(info->game, "Quake", sizeof(info->game));
2092 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
2093 strlcpy(info->name, MSG_ReadString(), sizeof(info->name));
2094 strlcpy(info->map , MSG_ReadString(), sizeof(info->map));
2095 info->numplayers = MSG_ReadByte();
2096 info->maxplayers = MSG_ReadByte();
2097 info->protocol = MSG_ReadByte();
2099 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2102 case CCREP_RCON: // RocketGuy: ProQuake rcon support
2103 if (developer_extra.integer)
2104 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_RCON from %s.\n", addressstring2);
2106 Con_Printf("%s\n", MSG_ReadString());
2108 case CCREP_PLAYER_INFO:
2109 // we got a CCREP_PLAYER_INFO??
2110 //if (developer_extra.integer)
2111 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
2113 case CCREP_RULE_INFO:
2114 // we got a CCREP_RULE_INFO??
2115 //if (developer_extra.integer)
2116 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
2121 SZ_Clear(&net_message);
2122 // we may not have liked the packet, but it was a valid control
2123 // packet, so we're done processing this packet now
2127 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2128 CL_ParseServerMessage();
2132 void NetConn_QueryQueueFrame(void)
2138 static double querycounter = 0;
2140 if(!net_slist_pause.integer && serverlist_paused)
2141 ServerList_RebuildViewList();
2142 serverlist_paused = net_slist_pause.integer != 0;
2144 if (serverlist_querysleep)
2147 // apply a cool down time after master server replies,
2148 // to avoid messing up the ping times on the servers
2149 if (serverlist_querywaittime > realtime)
2152 // each time querycounter reaches 1.0 issue a query
2153 querycounter += cl.realframetime * net_slist_queriespersecond.value;
2154 maxqueries = (int)querycounter;
2155 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
2156 querycounter -= maxqueries;
2158 if( maxqueries == 0 ) {
2162 // scan serverlist and issue queries as needed
2163 serverlist_querysleep = true;
2165 timeouttime = realtime - net_slist_timeout.value;
2166 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
2168 serverlist_entry_t *entry = &serverlist_cache[ index ];
2169 if( entry->query != SQS_QUERYING && entry->query != SQS_REFRESHING )
2174 serverlist_querysleep = false;
2175 if( entry->querycounter != 0 && entry->querytime > timeouttime )
2180 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
2182 lhnetaddress_t address;
2185 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
2186 if (entry->protocol == PROTOCOL_QUAKEWORLD)
2188 for (socket = 0; socket < cl_numsockets ; socket++)
2189 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
2193 for (socket = 0; socket < cl_numsockets ; socket++)
2194 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getstatus", &address);
2197 // update the entry fields
2198 entry->querytime = realtime;
2199 entry->querycounter++;
2201 // if not in the slist menu we should print the server to console
2202 if (serverlist_consoleoutput)
2203 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
2209 // have we tried to refresh this server?
2210 if( entry->query == SQS_REFRESHING ) {
2211 // yes, so update the reply count (since its not responding anymore)
2213 if(!serverlist_paused)
2214 ServerList_ViewList_Remove(entry);
2216 entry->query = SQS_TIMEDOUT;
2221 void NetConn_ClientFrame(void)
2224 lhnetaddress_t peeraddress;
2225 NetConn_UpdateSockets();
2226 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
2228 if (cls.connect_remainingtries == 0)
2229 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
2230 cls.connect_nextsendtime = realtime + 1;
2231 cls.connect_remainingtries--;
2232 if (cls.connect_remainingtries <= -10)
2234 cls.connect_trying = false;
2235 M_Update_Return_Reason("Connect: Failed");
2238 // try challenge first (newer DP server or QW)
2239 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
2240 // then try netquake as a fallback (old server, or netquake)
2241 SZ_Clear(&net_message);
2242 // save space for the header, filled in later
2243 MSG_WriteLong(&net_message, 0);
2244 MSG_WriteByte(&net_message, CCREQ_CONNECT);
2245 MSG_WriteString(&net_message, "QUAKE");
2246 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2247 // extended proquake stuff
2248 MSG_WriteByte(&net_message, 1); // mod = MOD_PROQUAKE
2249 // this version matches ProQuake 3.40, the first version to support
2250 // the NAT fix, and it only supports the NAT fix for ProQuake 3.40 or
2251 // higher clients, so we pretend we are that version...
2252 MSG_WriteByte(&net_message, 34); // version * 10
2253 MSG_WriteByte(&net_message, 0); // flags
2254 MSG_WriteLong(&net_message, 0); // password
2255 // write the packetsize now...
2256 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2257 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
2258 SZ_Clear(&net_message);
2260 for (i = 0;i < cl_numsockets;i++)
2262 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2264 // R_TimeReport("clientreadnetwork");
2265 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
2266 // R_TimeReport("clientparsepacket");
2269 NetConn_QueryQueueFrame();
2270 if (cls.netcon && realtime > cls.netcon->timeout && !sv.active)
2272 Con_Print("Connection timed out\n");
2274 Host_ShutdownServer ();
2278 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
2282 for (i = 0;i < bufferlength - 1;i++)
2286 c = rand () % (127 - 33) + 33;
2287 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
2293 /// (div0) build the full response only if possible; better a getinfo response than no response at all if getstatus won't fit
2294 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
2297 unsigned int nb_clients = 0, nb_bots = 0, i;
2300 const char *crypto_idstring;
2305 // How many clients are there?
2306 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2308 if (svs.clients[i].active)
2311 if (!svs.clients[i].netconnection)
2317 str = PRVM_GetString(PRVM_serverglobalstring(worldstatus));
2323 for(q = str; *q && (size_t)(p - qcstatus) < (sizeof(qcstatus) - 1); ++q)
2324 if(*q != '\\' && *q != '\n')
2329 /// \TODO: we should add more information for the full status string
2330 crypto_idstring = Crypto_GetInfoResponseDataString();
2331 length = dpsnprintf(out_msg, out_size,
2332 "\377\377\377\377%s\x0A"
2333 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
2334 "\\clients\\%d\\bots\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
2339 fullstatus ? "statusResponse" : "infoResponse",
2340 gamename, com_modname, gameversion.integer, svs.maxclients,
2341 nb_clients, nb_bots, sv.worldbasename, hostname.string, NET_PROTOCOL_VERSION,
2342 *qcstatus ? "\\qcstatus\\" : "", qcstatus,
2343 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
2344 crypto_idstring ? "\\d0_blind_id\\" : "", crypto_idstring ? crypto_idstring : "",
2345 fullstatus ? "\n" : "");
2347 // Make sure it fits in the buffer
2357 savelength = length;
2359 ptr = out_msg + length;
2360 left = (int)out_size - length;
2362 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2364 client_t *cl = &svs.clients[i];
2367 int nameind, cleanind, pingvalue;
2369 char cleanname [sizeof(cl->name)];
2373 // Remove all characters '"' and '\' in the player name
2378 curchar = cl->name[nameind++];
2379 if (curchar != '"' && curchar != '\\')
2381 cleanname[cleanind++] = curchar;
2382 if (cleanind == sizeof(cleanname) - 1)
2385 } while (curchar != '\0');
2386 cleanname[cleanind] = 0; // cleanind is always a valid index even at this point
2388 pingvalue = (int)(cl->ping * 1000.0f);
2389 if(cl->netconnection)
2390 pingvalue = bound(1, pingvalue, 9999);
2395 ed = PRVM_EDICT_NUM(i + 1);
2396 str = PRVM_GetString(PRVM_serveredictstring(ed, clientstatus));
2402 for(q = str; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q)
2403 if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q))
2408 if ((gamemode == GAME_NEXUIZ || gamemode == GAME_XONOTIC) && (teamplay.integer > 0))
2410 if(cl->frags == -666) // spectator
2411 strlcpy(teambuf, " 0", sizeof(teambuf));
2412 else if(cl->colors == 0x44) // red team
2413 strlcpy(teambuf, " 1", sizeof(teambuf));
2414 else if(cl->colors == 0xDD) // blue team
2415 strlcpy(teambuf, " 2", sizeof(teambuf));
2416 else if(cl->colors == 0xCC) // yellow team
2417 strlcpy(teambuf, " 3", sizeof(teambuf));
2418 else if(cl->colors == 0x99) // pink team
2419 strlcpy(teambuf, " 4", sizeof(teambuf));
2421 strlcpy(teambuf, " 0", sizeof(teambuf));
2426 // note: team number is inserted according to SoF2 protocol
2428 length = dpsnprintf(ptr, left, "%s %d%s \"%s\"\n",
2434 length = dpsnprintf(ptr, left, "%d %d%s \"%s\"\n",
2443 // turn it into an infoResponse!
2444 out_msg[savelength] = 0;
2445 memcpy(out_msg + 4, "infoResponse\x0A", 13);
2446 memmove(out_msg + 17, out_msg + 19, savelength - 19);
2463 static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
2465 int floodslotnum, bestfloodslotnum;
2466 double bestfloodtime;
2467 lhnetaddress_t noportpeeraddress;
2468 // see if this is a connect flood
2469 noportpeeraddress = *peeraddress;
2470 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2471 bestfloodslotnum = 0;
2472 bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
2473 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
2475 if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
2477 bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
2478 bestfloodslotnum = floodslotnum;
2480 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
2482 // this address matches an ongoing flood address
2483 if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
2485 // renew the ban on this address so it does not expire
2486 // until the flood has subsided
2487 sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
2488 //Con_Printf("Flood detected!\n");
2491 // the flood appears to have subsided, so allow this
2492 bestfloodslotnum = floodslotnum; // reuse the same slot
2496 // begin a new timeout on this address
2497 sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
2498 sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
2499 //Con_Printf("Flood detection initiated!\n");
2503 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
2506 lhnetaddress_t noportpeeraddress;
2507 // see if this is a connect flood
2508 noportpeeraddress = *peeraddress;
2509 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2510 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
2512 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
2514 // this address matches an ongoing flood address
2516 sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
2517 sv.connectfloodaddresses[floodslotnum].lasttime = 0;
2518 //Con_Printf("Flood cleared!\n");
2523 typedef qboolean (*rcon_matchfunc_t) (lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen);
2525 qboolean hmac_mdfour_time_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2530 t1 = (long) time(NULL);
2531 t2 = strtol(s, NULL, 0);
2532 if(abs(t1 - t2) > rcon_secure_maxdiff.integer)
2535 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
2538 return !memcmp(mdfourbuf, hash, 16);
2541 qboolean hmac_mdfour_challenge_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2546 if(slen < (int)(sizeof(challenge[0].string)) - 1)
2549 // validate the challenge
2550 for (i = 0;i < MAX_CHALLENGES;i++)
2551 if(challenge[i].time > 0)
2552 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strncmp(challenge[i].string, s, sizeof(challenge[0].string) - 1))
2554 // if the challenge is not recognized, drop the packet
2555 if (i == MAX_CHALLENGES)
2558 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
2561 if(memcmp(mdfourbuf, hash, 16))
2564 // unmark challenge to prevent replay attacks
2565 challenge[i].time = 0;
2570 qboolean plaintext_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2572 return !strcmp(password, hash);
2575 /// returns a string describing the user level, or NULL for auth failure
2576 const char *RCon_Authenticate(lhnetaddress_t *peeraddress, const char *password, const char *s, const char *endpos, rcon_matchfunc_t comparator, const char *cs, int cslen)
2578 const char *text, *userpass_start, *userpass_end, *userpass_startpass;
2579 static char buf[MAX_INPUTLINE];
2581 qboolean restricted = false;
2582 qboolean have_usernames = false;
2584 userpass_start = rcon_password.string;
2585 while((userpass_end = strchr(userpass_start, ' ')))
2587 have_usernames = true;
2588 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2590 if(comparator(peeraddress, buf, password, cs, cslen))
2592 userpass_start = userpass_end + 1;
2594 if(userpass_start[0])
2596 userpass_end = userpass_start + strlen(userpass_start);
2597 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2602 have_usernames = false;
2603 userpass_start = rcon_restricted_password.string;
2604 while((userpass_end = strchr(userpass_start, ' ')))
2606 have_usernames = true;
2607 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2609 if(comparator(peeraddress, buf, password, cs, cslen))
2611 userpass_start = userpass_end + 1;
2613 if(userpass_start[0])
2615 userpass_end = userpass_start + strlen(userpass_start);
2616 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2620 return NULL; // DENIED
2623 for(text = s; text != endpos; ++text)
2624 if((signed char) *text > 0 && ((signed char) *text < (signed char) ' ' || *text == ';'))
2625 return NULL; // block possible exploits against the parser/alias expansion
2629 size_t l = strlen(s);
2632 hasquotes = (strchr(s, '"') != NULL);
2633 // sorry, we can't allow these substrings in wildcard expressions,
2634 // as they can mess with the argument counts
2635 text = rcon_restricted_commands.string;
2636 while(COM_ParseToken_Console(&text))
2638 // com_token now contains a pattern to check for...
2639 if(strchr(com_token, '*') || strchr(com_token, '?')) // wildcard expression, * can only match a SINGLE argument
2642 if(matchpattern_with_separator(s, com_token, true, " ", true)) // note how we excluded tab, newline etc. above
2645 else if(strchr(com_token, ' ')) // multi-arg expression? must match in whole
2647 if(!strcmp(com_token, s))
2650 else // single-arg expression? must match the beginning of the command
2652 if(!strcmp(com_token, s))
2654 if(!memcmp(va("%s ", com_token), s, strlen(com_token) + 1))
2658 // if we got here, nothing matched!
2666 userpass_startpass = strchr(userpass_start, ':');
2667 if(have_usernames && userpass_startpass && userpass_startpass < userpass_end)
2668 return va("%srcon (username %.*s)", restricted ? "restricted " : "", (int)(userpass_startpass-userpass_start), userpass_start);
2670 return va("%srcon", restricted ? "restricted " : "");
2673 void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos, qboolean proquakeprotocol)
2677 // looks like a legitimate rcon command with the correct password
2678 const char *s_ptr = s;
2679 Con_Printf("server received %s command from %s: ", userlevel, host_client ? host_client->name : addressstring2);
2680 while(s_ptr != endpos)
2682 size_t l = strlen(s_ptr);
2684 Con_Printf(" %s;", s_ptr);
2689 if (!host_client || !host_client->netconnection || LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2690 Con_Rcon_Redirect_Init(mysocket, peeraddress, proquakeprotocol);
2693 size_t l = strlen(s);
2696 client_t *host_client_save = host_client;
2697 Cmd_ExecuteString(s, src_command, true);
2698 host_client = host_client_save;
2699 // in case it is a command that changes host_client (like restart)
2703 Con_Rcon_Redirect_End();
2707 Con_Printf("server denied rcon access to %s\n", host_client ? host_client->name : addressstring2);
2711 extern void SV_SendServerinfo (client_t *client);
2712 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
2714 int i, ret, clientnum, best;
2717 char *s, *string, response[1400], addressstring2[128];
2718 static char stringbuf[16384];
2719 qboolean islocal = (LHNETADDRESS_GetAddressType(peeraddress) == LHNETADDRESSTYPE_LOOP);
2720 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
2721 size_t sendlength, response_len;
2726 // convert the address to a string incase we need it
2727 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
2729 // see if we can identify the sender as a local player
2730 // (this is necessary for rcon to send a reliable reply if the client is
2731 // actually on the server, not sending remotely)
2732 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2733 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
2735 if (i == svs.maxclients)
2738 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
2740 // received a command string - strip off the packaging and put it
2741 // into our string buffer with NULL termination
2744 length = min(length, (int)sizeof(stringbuf) - 1);
2745 memcpy(stringbuf, data, length);
2746 stringbuf[length] = 0;
2749 if (developer_extra.integer)
2751 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
2752 Com_HexDumpToConsole(data, length);
2755 sendlength = sizeof(senddata) - 4;
2756 switch(Crypto_ServerParsePacket(string, length, senddata+4, &sendlength, peeraddress))
2758 case CRYPTO_NOMATCH:
2764 memcpy(senddata, "\377\377\377\377", 4);
2765 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
2768 case CRYPTO_DISCARD:
2771 memcpy(senddata, "\377\377\377\377", 4);
2772 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
2776 case CRYPTO_REPLACE:
2777 string = senddata+4;
2778 length = sendlength;
2782 if (length >= 12 && !memcmp(string, "getchallenge", 12) && (islocal || sv_public.integer > -3))
2784 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
2786 if(challenge[i].time > 0)
2787 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
2789 if (besttime > challenge[i].time)
2790 besttime = challenge[best = i].time;
2792 // if we did not find an exact match, choose the oldest and
2793 // update address and string
2794 if (i == MAX_CHALLENGES)
2797 challenge[i].address = *peeraddress;
2798 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
2800 challenge[i].time = realtime;
2801 // send the challenge
2802 dpsnprintf(response, sizeof(response), "\377\377\377\377challenge %s", challenge[i].string);
2803 response_len = strlen(response) + 1;
2804 Crypto_ServerAppendToChallenge(string, length, response, &response_len, sizeof(response));
2805 NetConn_Write(mysocket, response, response_len, peeraddress);
2808 if (length > 8 && !memcmp(string, "connect\\", 8))
2810 crypto_t *crypto = Crypto_ServerGetInstance(peeraddress);
2814 if(crypto && crypto->authenticated)
2816 // no need to check challenge
2817 if(crypto_developer.integer)
2819 Con_Printf("%s connection to %s is being established: client is %s@%.*s, I am %.*s@%.*s\n",
2820 crypto->use_aes ? "Encrypted" : "Authenticated",
2822 crypto->client_idfp[0] ? crypto->client_idfp : "-",
2823 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-",
2824 crypto_keyfp_recommended_length, crypto->server_idfp[0] ? crypto->server_idfp : "-",
2825 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-"
2831 if ((s = SearchInfostring(string, "challenge")))
2833 // validate the challenge
2834 for (i = 0;i < MAX_CHALLENGES;i++)
2835 if(challenge[i].time > 0)
2836 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
2838 // if the challenge is not recognized, drop the packet
2839 if (i == MAX_CHALLENGES)
2844 if((s = SearchInfostring(string, "message")))
2845 Con_DPrintf("Connecting client %s sent us the message: %s\n", addressstring2, s);
2847 if(!(islocal || sv_public.integer > -2))
2849 if (developer_extra.integer)
2850 Con_Printf("Datagram_ParseConnectionless: sending \"reject %s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
2851 NetConn_WriteString(mysocket, va("\377\377\377\377reject %s", sv_public_rejectreason.string), peeraddress);
2855 // check engine protocol
2856 if(!(s = SearchInfostring(string, "protocol")) || strcmp(s, "darkplaces 3"))
2858 if (developer_extra.integer)
2859 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
2860 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
2864 // see if this is a duplicate connection request or a disconnected
2865 // client who is rejoining to the same client slot
2866 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2868 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2870 // this is a known client...
2871 if(crypto && crypto->authenticated)
2873 // reject if changing key!
2874 if(client->netconnection->crypto.authenticated)
2877 strcmp(client->netconnection->crypto.client_idfp, crypto->client_idfp)
2879 strcmp(client->netconnection->crypto.server_idfp, crypto->server_idfp)
2881 strcmp(client->netconnection->crypto.client_keyfp, crypto->client_keyfp)
2883 strcmp(client->netconnection->crypto.server_keyfp, crypto->server_keyfp)
2886 if (developer_extra.integer)
2887 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to change key of crypto.\" to %s.\n", addressstring2);
2888 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to change key of crypto.", peeraddress);
2895 // reject if downgrading!
2896 if(client->netconnection->crypto.authenticated)
2898 if (developer_extra.integer)
2899 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to downgrade crypto.\" to %s.\n", addressstring2);
2900 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to downgrade crypto.", peeraddress);
2904 if (client->spawned)
2906 // client crashed and is coming back,
2907 // keep their stuff intact
2908 if (developer_extra.integer)
2909 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
2910 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2911 if(crypto && crypto->authenticated)
2912 Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
2914 SV_SendServerinfo(client);
2919 // client is still trying to connect,
2920 // so we send a duplicate reply
2921 if (developer_extra.integer)
2922 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
2923 if(crypto && crypto->authenticated)
2924 Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
2925 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2931 if (NetConn_PreventConnectFlood(peeraddress))
2934 // find an empty client slot for this new client
2935 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2938 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
2940 // allocated connection
2941 if (developer_extra.integer)
2942 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
2943 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2944 // now set up the client
2945 if(crypto && crypto->authenticated)
2946 Crypto_ServerFinishInstance(&conn->crypto, crypto);
2948 SV_ConnectClient(clientnum, conn);
2950 NetConn_Heartbeat(1);
2955 // no empty slots found - server is full
2956 if (developer_extra.integer)
2957 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
2958 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
2962 if (length >= 7 && !memcmp(string, "getinfo", 7) && (islocal || sv_public.integer > -1))
2964 const char *challenge = NULL;
2966 // If there was a challenge in the getinfo message
2967 if (length > 8 && string[7] == ' ')
2968 challenge = string + 8;
2970 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
2972 if (developer_extra.integer)
2973 Con_DPrintf("Sending reply to master %s - %s\n", addressstring2, response);
2974 NetConn_WriteString(mysocket, response, peeraddress);
2978 if (length >= 9 && !memcmp(string, "getstatus", 9) && (islocal || sv_public.integer > -1))
2980 const char *challenge = NULL;
2982 // If there was a challenge in the getinfo message
2983 if (length > 10 && string[9] == ' ')
2984 challenge = string + 10;
2986 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
2988 if (developer_extra.integer)
2989 Con_DPrintf("Sending reply to client %s - %s\n", addressstring2, response);
2990 NetConn_WriteString(mysocket, response, peeraddress);
2994 if (length >= 37 && !memcmp(string, "srcon HMAC-MD4 TIME ", 20))
2996 char *password = string + 20;
2997 char *timeval = string + 37;
2998 char *s = strchr(timeval, ' ');
2999 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3000 const char *userlevel;
3002 if(rcon_secure.integer > 1)
3006 return true; // invalid packet
3009 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_time_matching, timeval, endpos - timeval - 1); // not including the appended \0 into the HMAC
3010 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3013 if (length >= 42 && !memcmp(string, "srcon HMAC-MD4 CHALLENGE ", 25))
3015 char *password = string + 25;
3016 char *challenge = string + 42;
3017 char *s = strchr(challenge, ' ');
3018 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3019 const char *userlevel;
3021 return true; // invalid packet
3024 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_challenge_matching, challenge, endpos - challenge - 1); // not including the appended \0 into the HMAC
3025 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3028 if (length >= 5 && !memcmp(string, "rcon ", 5))
3031 char *s = string + 5;
3032 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3035 if(rcon_secure.integer > 0)
3038 for (i = 0;!ISWHITESPACE(*s);s++)
3039 if (i < (int)sizeof(password) - 1)
3041 if(ISWHITESPACE(*s) && s != endpos) // skip leading ugly space
3044 if (!ISWHITESPACE(password[0]))
3046 const char *userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3047 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3051 if (!strncmp(string, "extResponse ", 12))
3053 ++sv_net_extresponse_count;
3054 if(sv_net_extresponse_count > NET_EXTRESPONSE_MAX)
3055 sv_net_extresponse_count = NET_EXTRESPONSE_MAX;
3056 sv_net_extresponse_last = (sv_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
3057 dpsnprintf(sv_net_extresponse[sv_net_extresponse_last], sizeof(sv_net_extresponse[sv_net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
3060 if (!strncmp(string, "ping", 4))
3062 if (developer_extra.integer)
3063 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
3064 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
3067 if (!strncmp(string, "ack", 3))
3069 // we may not have liked the packet, but it was a command packet, so
3070 // we're done processing this packet now
3073 // netquake control packets, supported for compatibility only, and only
3074 // when running game protocols that are normally served via this connection
3076 // (this protects more modern protocols against being used for
3077 // Quake packet flood Denial Of Service attacks)
3078 if (length >= 5 && (i = BuffBigLong(data)) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3 || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3) && !ENCRYPTION_REQUIRED)
3082 const char *protocolname;
3085 SZ_Clear(&net_message);
3086 SZ_Write(&net_message, data, length);
3092 if (developer_extra.integer)
3093 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
3094 if(!(islocal || sv_public.integer > -2))
3096 if (developer_extra.integer)
3097 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"%s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
3098 SZ_Clear(&net_message);
3099 // save space for the header, filled in later
3100 MSG_WriteLong(&net_message, 0);
3101 MSG_WriteByte(&net_message, CCREP_REJECT);
3102 MSG_WriteString(&net_message, va("%s\n", sv_public_rejectreason.string));
3103 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3104 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3105 SZ_Clear(&net_message);
3109 protocolname = MSG_ReadString();
3110 protocolnumber = MSG_ReadByte();
3111 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
3113 if (developer_extra.integer)
3114 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
3115 SZ_Clear(&net_message);
3116 // save space for the header, filled in later
3117 MSG_WriteLong(&net_message, 0);
3118 MSG_WriteByte(&net_message, CCREP_REJECT);
3119 MSG_WriteString(&net_message, "Incompatible version.\n");
3120 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3121 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3122 SZ_Clear(&net_message);
3126 // see if this connect request comes from a known client
3127 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3129 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
3131 // this is either a duplicate connection request
3132 // or coming back from a timeout
3133 // (if so, keep their stuff intact)
3136 if (developer_extra.integer)
3137 Con_DPrintf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
3138 SZ_Clear(&net_message);
3139 // save space for the header, filled in later
3140 MSG_WriteLong(&net_message, 0);
3141 MSG_WriteByte(&net_message, CCREP_ACCEPT);
3142 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
3143 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3144 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3145 SZ_Clear(&net_message);
3147 // if client is already spawned, re-send the
3148 // serverinfo message as they'll need it to play
3149 if (client->spawned)
3152 SV_SendServerinfo(client);
3159 // this is a new client, check for connection flood
3160 if (NetConn_PreventConnectFlood(peeraddress))
3163 // find a slot for the new client
3164 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3167 if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
3169 // connect to the client
3170 // everything is allocated, just fill in the details
3171 strlcpy (conn->address, addressstring2, sizeof (conn->address));
3172 if (developer_extra.integer)
3173 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
3174 // send back the info about the server connection
3175 SZ_Clear(&net_message);
3176 // save space for the header, filled in later
3177 MSG_WriteLong(&net_message, 0);
3178 MSG_WriteByte(&net_message, CCREP_ACCEPT);
3179 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
3180 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3181 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3182 SZ_Clear(&net_message);
3183 // now set up the client struct
3185 SV_ConnectClient(clientnum, conn);
3187 NetConn_Heartbeat(1);
3192 if (developer_extra.integer)
3193 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
3194 // no room; try to let player know
3195 SZ_Clear(&net_message);
3196 // save space for the header, filled in later
3197 MSG_WriteLong(&net_message, 0);
3198 MSG_WriteByte(&net_message, CCREP_REJECT);
3199 MSG_WriteString(&net_message, "Server is full.\n");
3200 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3201 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3202 SZ_Clear(&net_message);
3204 case CCREQ_SERVER_INFO:
3205 if (developer_extra.integer)
3206 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
3207 if(!(islocal || sv_public.integer > -1))
3209 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
3212 char myaddressstring[128];
3213 if (developer_extra.integer)
3214 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
3215 SZ_Clear(&net_message);
3216 // save space for the header, filled in later
3217 MSG_WriteLong(&net_message, 0);
3218 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
3219 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
3220 MSG_WriteString(&net_message, myaddressstring);
3221 MSG_WriteString(&net_message, hostname.string);
3222 MSG_WriteString(&net_message, sv.name);
3223 // How many clients are there?
3224 for (i = 0, numclients = 0;i < svs.maxclients;i++)
3225 if (svs.clients[i].active)
3227 MSG_WriteByte(&net_message, numclients);
3228 MSG_WriteByte(&net_message, svs.maxclients);
3229 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
3230 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3231 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3232 SZ_Clear(&net_message);
3235 case CCREQ_PLAYER_INFO:
3236 if (developer_extra.integer)
3237 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
3238 if(!(islocal || sv_public.integer > -1))
3242 int playerNumber, activeNumber, clientNumber;
3245 playerNumber = MSG_ReadByte();
3247 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
3248 if (client->active && ++activeNumber == playerNumber)
3250 if (clientNumber != svs.maxclients)
3252 SZ_Clear(&net_message);
3253 // save space for the header, filled in later
3254 MSG_WriteLong(&net_message, 0);
3255 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
3256 MSG_WriteByte(&net_message, playerNumber);
3257 MSG_WriteString(&net_message, client->name);
3258 MSG_WriteLong(&net_message, client->colors);
3259 MSG_WriteLong(&net_message, client->frags);
3260 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
3261 if(sv_status_privacy.integer)
3262 MSG_WriteString(&net_message, client->netconnection ? "hidden" : "botclient");
3264 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
3265 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3266 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3267 SZ_Clear(&net_message);
3271 case CCREQ_RULE_INFO:
3272 if (developer_extra.integer)
3273 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
3274 if(!(islocal || sv_public.integer > -1))
3281 // find the search start location
3282 prevCvarName = MSG_ReadString();
3283 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
3285 // send the response
3286 SZ_Clear(&net_message);
3287 // save space for the header, filled in later
3288 MSG_WriteLong(&net_message, 0);
3289 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
3292 MSG_WriteString(&net_message, var->name);
3293 MSG_WriteString(&net_message, var->string);
3295 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3296 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3297 SZ_Clear(&net_message);
3301 if (developer_extra.integer)
3302 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RCON from %s.\n", addressstring2);
3303 if (sv.active && !rcon_secure.integer)
3305 char password[2048];
3309 const char *userlevel;
3310 strlcpy(password, MSG_ReadString(), sizeof(password));
3311 strlcpy(cmd, MSG_ReadString(), sizeof(cmd));
3313 endpos = cmd + strlen(cmd) + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3314 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3315 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, true);
3322 SZ_Clear(&net_message);
3323 // we may not have liked the packet, but it was a valid control
3324 // packet, so we're done processing this packet now
3329 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
3332 SV_ReadClientMessage();
3340 void NetConn_ServerFrame(void)
3343 lhnetaddress_t peeraddress;
3344 for (i = 0;i < sv_numsockets;i++)
3345 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
3346 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
3347 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
3349 // never timeout loopback connections
3350 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
3352 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
3354 SV_DropClient(false);
3360 void NetConn_SleepMicroseconds(int microseconds)
3362 LHNET_SleepUntilPacket_Microseconds(microseconds);
3365 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
3369 lhnetaddress_t masteraddress;
3370 lhnetaddress_t broadcastaddress;
3373 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
3376 // 26000 is the default quake server port, servers on other ports will not
3378 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
3379 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
3383 for (i = 0;i < cl_numsockets;i++)
3387 const char *cmdname, *extraoptions;
3388 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3390 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3392 // search LAN for Quake servers
3393 SZ_Clear(&net_message);
3394 // save space for the header, filled in later
3395 MSG_WriteLong(&net_message, 0);
3396 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
3397 MSG_WriteString(&net_message, "QUAKE");
3398 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
3399 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3400 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
3401 SZ_Clear(&net_message);
3403 // search LAN for DarkPlaces servers
3404 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getstatus", &broadcastaddress);
3407 // build the getservers message to send to the dpmaster master servers
3408 if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == LHNETADDRESSTYPE_INET6)
3410 cmdname = "getserversExt";
3411 extraoptions = " ipv4 ipv6"; // ask for IPv4 and IPv6 servers
3415 cmdname = "getservers";
3418 dpsnprintf(request, sizeof(request), "\377\377\377\377%s %s %u empty full%s", cmdname, gamename, NET_PROTOCOL_VERSION, extraoptions);
3421 for (masternum = 0;sv_masters[masternum].name;masternum++)
3423 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == af)
3426 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
3430 // search favorite servers
3431 for(j = 0; j < nFavorites; ++j)
3433 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3435 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3436 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, request, true );
3443 // only query QuakeWorld servers when the user wants to
3446 for (i = 0;i < cl_numsockets;i++)
3450 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3452 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3454 // search LAN for QuakeWorld servers
3455 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
3457 // build the getservers message to send to the qwmaster master servers
3458 // note this has no -1 prefix, and the trailing nul byte is sent
3459 dpsnprintf(request, sizeof(request), "c\n");
3463 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
3465 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
3467 if (m_state != m_slist)
3469 char lookupstring[128];
3470 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
3471 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
3474 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
3478 // search favorite servers
3479 for(j = 0; j < nFavorites; ++j)
3481 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3483 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3485 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &favorites[j]);
3486 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, request, true );
3493 if (!masterquerycount)
3495 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
3496 M_Update_Return_Reason("No network");
3500 void NetConn_Heartbeat(int priority)
3502 lhnetaddress_t masteraddress;
3504 lhnetsocket_t *mysocket;
3506 // if it's a state change (client connected), limit next heartbeat to no
3507 // more than 30 sec in the future
3508 if (priority == 1 && nextheartbeattime > realtime + 30.0)
3509 nextheartbeattime = realtime + 30.0;
3511 // limit heartbeatperiod to 30 to 270 second range,
3512 // lower limit is to avoid abusing master servers with excess traffic,
3513 // upper limit is to avoid timing out on the master server (which uses
3515 if (sv_heartbeatperiod.value < 30)
3516 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
3517 if (sv_heartbeatperiod.value > 270)
3518 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
3520 // make advertising optional and don't advertise singleplayer games, and
3521 // only send a heartbeat as often as the admin wants
3522 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
3524 nextheartbeattime = realtime + sv_heartbeatperiod.value;
3525 for (masternum = 0;sv_masters[masternum].name;masternum++)
3526 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
3527 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
3531 static void Net_Heartbeat_f(void)
3534 NetConn_Heartbeat(2);
3536 Con_Print("No server running, can not heartbeat to master server.\n");
3539 void PrintStats(netconn_t *conn)
3541 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
3542 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->outgoing_unreliable_sequence, conn->qw.incoming_sequence);
3544 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
3547 void Net_Stats_f(void)
3550 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
3551 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
3552 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
3553 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
3554 Con_Printf("packetsSent = %i\n", packetsSent);
3555 Con_Printf("packetsReSent = %i\n", packetsReSent);
3556 Con_Printf("packetsReceived = %i\n", packetsReceived);
3557 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
3558 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
3559 Con_Print("connections =\n");
3560 for (conn = netconn_list;conn;conn = conn->next)
3564 void Net_Refresh_f(void)
3566 if (m_state != m_slist) {
3567 Con_Print("Sending new requests to master servers\n");
3568 ServerList_QueryList(false, true, false, true);
3569 Con_Print("Listening for replies...\n");
3571 ServerList_QueryList(false, true, false, false);
3574 void Net_Slist_f(void)
3576 ServerList_ResetMasks();
3577 serverlist_sortbyfield = SLIF_PING;
3578 serverlist_sortflags = 0;
3579 if (m_state != m_slist) {
3580 Con_Print("Sending requests to master servers\n");
3581 ServerList_QueryList(true, true, false, true);
3582 Con_Print("Listening for replies...\n");
3584 ServerList_QueryList(true, true, false, false);
3587 void Net_SlistQW_f(void)
3589 ServerList_ResetMasks();
3590 serverlist_sortbyfield = SLIF_PING;
3591 serverlist_sortflags = 0;
3592 if (m_state != m_slist) {
3593 Con_Print("Sending requests to master servers\n");
3594 ServerList_QueryList(true, false, true, true);
3595 serverlist_consoleoutput = true;
3596 Con_Print("Listening for replies...\n");
3598 ServerList_QueryList(true, false, true, false);
3601 void NetConn_Init(void)
3604 lhnetaddress_t tempaddress;
3605 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
3606 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
3607 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
3608 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
3609 Cmd_AddCommand("net_refresh", Net_Refresh_f, "query dp master servers and refresh all server information");
3610 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
3611 Cvar_RegisterVariable(&rcon_restricted_password);
3612 Cvar_RegisterVariable(&rcon_restricted_commands);
3613 Cvar_RegisterVariable(&rcon_secure_maxdiff);
3614 Cvar_RegisterVariable(&net_slist_queriespersecond);
3615 Cvar_RegisterVariable(&net_slist_queriesperframe);
3616 Cvar_RegisterVariable(&net_slist_timeout);
3617 Cvar_RegisterVariable(&net_slist_maxtries);
3618 Cvar_RegisterVariable(&net_slist_favorites);
3619 Cvar_RegisterVariable(&net_slist_pause);
3620 Cvar_RegisterVariable(&net_messagetimeout);
3621 Cvar_RegisterVariable(&net_connecttimeout);
3622 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
3623 Cvar_RegisterVariable(&cl_netlocalping);
3624 Cvar_RegisterVariable(&cl_netpacketloss_send);
3625 Cvar_RegisterVariable(&cl_netpacketloss_receive);
3626 Cvar_RegisterVariable(&hostname);
3627 Cvar_RegisterVariable(&developer_networking);
3628 Cvar_RegisterVariable(&cl_netport);
3629 Cvar_RegisterVariable(&sv_netport);
3630 Cvar_RegisterVariable(&net_address);
3631 Cvar_RegisterVariable(&net_address_ipv6);
3632 Cvar_RegisterVariable(&sv_public);
3633 Cvar_RegisterVariable(&sv_public_rejectreason);
3634 Cvar_RegisterVariable(&sv_heartbeatperiod);
3635 for (i = 0;sv_masters[i].name;i++)
3636 Cvar_RegisterVariable(&sv_masters[i]);
3637 Cvar_RegisterVariable(&gameversion);
3638 Cvar_RegisterVariable(&gameversion_min);
3639 Cvar_RegisterVariable(&gameversion_max);
3640 // COMMANDLINEOPTION: Server: -ip <ipaddress> sets the ip address of this machine for purposes of networking (default 0.0.0.0 also known as INADDR_ANY), use only if you have multiple network adapters and need to choose one specifically.
3641 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
3643 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
3645 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
3646 Cvar_SetQuick(&net_address, com_argv[i + 1]);
3649 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
3651 // COMMANDLINEOPTION: Server: -port <portnumber> sets the port to use for a server (default 26000, the same port as QUAKE itself), useful if you host multiple servers on your machine
3652 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
3654 i = atoi(com_argv[i + 1]);
3655 if (i >= 0 && i < 65536)
3657 Con_Printf("-port option used, setting port cvar to %i\n", i);
3658 Cvar_SetValueQuick(&sv_netport, i);
3661 Con_Printf("-port option used, but %i is not a valid port number\n", i);
3665 net_message.data = net_message_buf;
3666 net_message.maxsize = sizeof(net_message_buf);
3667 net_message.cursize = 0;
3669 if (Thread_HasThreads())
3670 netconn_mutex = Thread_CreateMutex();
3673 void NetConn_Shutdown(void)
3675 NetConn_CloseClientPorts();
3676 NetConn_CloseServerPorts();
3679 Thread_DestroyMutex(netconn_mutex);
3680 netconn_mutex = NULL;