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;
74 static unsigned char cl_message_buf[NET_MAXMESSAGE];
75 static unsigned char sv_message_buf[NET_MAXMESSAGE];
76 char cl_readstring[MAX_INPUTLINE];
77 char sv_readstring[MAX_INPUTLINE];
79 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
80 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."};
81 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)"};
82 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
83 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
85 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)"};
86 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)"};
87 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)"};
88 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
89 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)"};
90 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
91 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"};
92 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)"};
93 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"};
94 static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific) to be sent to querying clients"};
95 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"};
96 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"};
97 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"};
98 static cvar_t rcon_restricted_commands = {0, "rcon_restricted_commands", "", "allowed commands for rcon when the restricted mode password was used"};
99 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)"};
100 extern cvar_t rcon_secure;
101 extern cvar_t rcon_secure_challengetimeout;
103 double masterquerytime = -1000;
104 int masterquerycount = 0;
105 int masterreplycount = 0;
106 int serverquerycount = 0;
107 int serverreplycount = 0;
109 challenge_t challenge[MAX_CHALLENGES];
111 /// this is only false if there are still servers left to query
112 static qboolean serverlist_querysleep = true;
113 static qboolean serverlist_paused = false;
114 /// this is pushed a second or two ahead of realtime whenever a master server
115 /// reply is received, to avoid issuing queries while master replies are still
116 /// flooding in (which would make a mess of the ping times)
117 static double serverlist_querywaittime = 0;
119 static int cl_numsockets;
120 static lhnetsocket_t *cl_sockets[16];
121 static int sv_numsockets;
122 static lhnetsocket_t *sv_sockets[16];
124 netconn_t *netconn_list = NULL;
125 mempool_t *netconn_mempool = NULL;
126 void *netconn_mutex = NULL;
128 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
129 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
130 cvar_t net_address = {0, "net_address", "", "network address to open ipv4 ports on (if empty, use default interfaces)"};
131 cvar_t net_address_ipv6 = {0, "net_address_ipv6", "", "network address to open ipv6 ports on (if empty, use default interfaces)"};
133 char cl_net_extresponse[NET_EXTRESPONSE_MAX][1400];
134 int cl_net_extresponse_count = 0;
135 int cl_net_extresponse_last = 0;
137 char sv_net_extresponse[NET_EXTRESPONSE_MAX][1400];
138 int sv_net_extresponse_count = 0;
139 int sv_net_extresponse_last = 0;
141 // ServerList interface
142 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
143 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
145 serverlist_infofield_t serverlist_sortbyfield;
146 int serverlist_sortflags;
148 int serverlist_viewcount = 0;
149 unsigned short serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
151 int serverlist_maxcachecount = 0;
152 int serverlist_cachecount = 0;
153 serverlist_entry_t *serverlist_cache = NULL;
155 qboolean serverlist_consoleoutput;
157 static int nFavorites = 0;
158 static lhnetaddress_t favorites[MAX_FAVORITESERVERS];
159 static int nFavorites_idfp = 0;
160 static char favorites_idfp[MAX_FAVORITESERVERS][FP64_SIZE+1];
162 void NetConn_UpdateFavorites(void)
167 p = net_slist_favorites.string;
168 while((size_t) nFavorites < sizeof(favorites) / sizeof(*favorites) && COM_ParseToken_Console(&p))
170 if(com_token[0] != '[' && strlen(com_token) == FP64_SIZE && !strchr(com_token, '.'))
171 // currently 44 bytes, longest possible IPv6 address: 39 bytes, so this works
172 // (if v6 address contains port, it must start with '[')
174 strlcpy(favorites_idfp[nFavorites_idfp], com_token, sizeof(favorites_idfp[nFavorites_idfp]));
179 if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000))
185 /// helper function to insert a value into the viewset
186 /// spare entries will be removed
187 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
190 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
191 i = serverlist_viewcount++;
193 i = SERVERLIST_VIEWLISTSIZE - 1;
196 for( ; i > index ; i-- )
197 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
199 serverlist_viewlist[index] = (int)(entry - serverlist_cache);
202 /// we suppose serverlist_viewcount to be valid, ie > 0
203 static void _ServerList_ViewList_Helper_Remove( int index )
205 serverlist_viewcount--;
206 for( ; index < serverlist_viewcount ; index++ )
207 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
210 /// \returns true if A should be inserted before B
211 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
213 int result = 0; // > 0 if for numbers A > B and for text if A < B
215 if( serverlist_sortflags & SLSF_FAVORITESFIRST )
217 if(A->info.isfavorite != B->info.isfavorite)
218 return A->info.isfavorite;
221 switch( serverlist_sortbyfield ) {
223 result = A->info.ping - B->info.ping;
225 case SLIF_MAXPLAYERS:
226 result = A->info.maxplayers - B->info.maxplayers;
228 case SLIF_NUMPLAYERS:
229 result = A->info.numplayers - B->info.numplayers;
232 result = A->info.numbots - B->info.numbots;
235 result = A->info.numhumans - B->info.numhumans;
238 result = A->info.freeslots - B->info.freeslots;
241 result = A->info.protocol - B->info.protocol;
244 result = strcmp( B->info.cname, A->info.cname );
247 result = strcasecmp( B->info.game, A->info.game );
250 result = strcasecmp( B->info.map, A->info.map );
253 result = strcasecmp( B->info.mod, A->info.mod );
256 result = strcasecmp( B->info.name, A->info.name );
259 result = strcasecmp( B->info.qcstatus, A->info.qcstatus ); // not really THAT useful, though
261 case SLIF_ISFAVORITE:
262 result = !!B->info.isfavorite - !!A->info.isfavorite;
265 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
271 if( serverlist_sortflags & SLSF_DESCENDING )
277 // if the chosen sort key is identical, sort by index
278 // (makes this a stable sort, so that later replies from servers won't
279 // shuffle the servers around when they have the same ping)
283 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
285 // This should actually be done with some intermediate and end-of-function return
297 case SLMO_GREATEREQUAL:
299 case SLMO_NOTCONTAIN:
300 case SLMO_STARTSWITH:
301 case SLMO_NOTSTARTSWITH:
304 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
309 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
312 char bufferA[ 1400 ], bufferB[ 1400 ]; // should be more than enough
313 COM_StringDecolorize(A, 0, bufferA, sizeof(bufferA), false);
314 for (i = 0;i < (int)sizeof(bufferA)-1 && bufferA[i];i++)
315 bufferA[i] = (bufferA[i] >= 'A' && bufferA[i] <= 'Z') ? (bufferA[i] + 'a' - 'A') : bufferA[i];
317 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
318 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
321 // Same here, also using an intermediate & final return would be more appropriate
325 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
326 case SLMO_NOTCONTAIN:
327 return !*bufferB || !strstr( bufferA, bufferB );
328 case SLMO_STARTSWITH:
329 //Con_Printf("startsWith: %s %s\n", bufferA, bufferB);
330 return *bufferB && !memcmp(bufferA, bufferB, strlen(bufferB));
331 case SLMO_NOTSTARTSWITH:
332 return !*bufferB || memcmp(bufferA, bufferB, strlen(bufferB));
334 return strcmp( bufferA, bufferB ) < 0;
336 return strcmp( bufferA, bufferB ) <= 0;
338 return strcmp( bufferA, bufferB ) == 0;
340 return strcmp( bufferA, bufferB ) > 0;
342 return strcmp( bufferA, bufferB ) != 0;
343 case SLMO_GREATEREQUAL:
344 return strcmp( bufferA, bufferB ) >= 0;
346 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
351 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
353 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
355 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
357 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
359 if( !_ServerList_CompareInt( info->numbots, mask->tests[SLIF_NUMBOTS], mask->info.numbots ) )
361 if( !_ServerList_CompareInt( info->numhumans, mask->tests[SLIF_NUMHUMANS], mask->info.numhumans ) )
363 if( !_ServerList_CompareInt( info->freeslots, mask->tests[SLIF_FREESLOTS], mask->info.freeslots ) )
365 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
367 if( *mask->info.cname
368 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
371 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
374 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
377 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
380 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
382 if( *mask->info.qcstatus
383 && !_ServerList_CompareStr( info->qcstatus, mask->tests[SLIF_QCSTATUS], mask->info.qcstatus ) )
385 if( *mask->info.players
386 && !_ServerList_CompareStr( info->players, mask->tests[SLIF_PLAYERS], mask->info.players ) )
388 if( !_ServerList_CompareInt( info->isfavorite, mask->tests[SLIF_ISFAVORITE], mask->info.isfavorite ))
393 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
395 int start, end, mid, i;
398 // reject incompatible servers
400 entry->info.gameversion != gameversion.integer
403 gameversion_min.integer >= 0 // min/max range set by user/mod?
404 && gameversion_max.integer >= 0
405 && gameversion_min.integer <= entry->info.gameversion // version of server in min/max range?
406 && gameversion_max.integer >= entry->info.gameversion
411 // refresh the "favorite" status
412 entry->info.isfavorite = false;
413 if(LHNETADDRESS_FromString(&addr, entry->info.cname, 26000))
415 char idfp[FP64_SIZE+1];
416 for(i = 0; i < nFavorites; ++i)
418 if(LHNETADDRESS_Compare(&addr, &favorites[i]) == 0)
420 entry->info.isfavorite = true;
424 if(Crypto_RetrieveHostKey(&addr, 0, NULL, 0, idfp, sizeof(idfp), NULL))
426 for(i = 0; i < nFavorites_idfp; ++i)
428 if(!strcmp(idfp, favorites_idfp[i]))
430 entry->info.isfavorite = true;
437 // FIXME: change this to be more readable (...)
438 // now check whether it passes through the masks
439 for( start = 0 ; start < SERVERLIST_ANDMASKCOUNT && serverlist_andmasks[start].active; start++ )
440 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
443 for( start = 0 ; start < SERVERLIST_ORMASKCOUNT && serverlist_ormasks[start].active ; start++ )
444 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
446 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
449 if( !serverlist_viewcount ) {
450 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
453 // ok, insert it, we just need to find out where exactly:
456 // check whether to insert it as new first item
457 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(0) ) ) {
458 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
460 } // check whether to insert it as new last item
461 else if( !_ServerList_Entry_Compare( entry, ServerList_GetViewEntry(serverlist_viewcount - 1) ) ) {
462 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
466 end = serverlist_viewcount - 1;
467 while( end > start + 1 )
469 mid = (start + end) / 2;
470 // test the item that lies in the middle between start and end
471 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(mid) ) )
472 // the item has to be in the upper half
475 // the item has to be in the lower half
478 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
481 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
484 for( i = 0; i < serverlist_viewcount; i++ )
486 if (ServerList_GetViewEntry(i) == entry)
488 _ServerList_ViewList_Helper_Remove(i);
494 void ServerList_RebuildViewList(void)
498 serverlist_viewcount = 0;
499 for( i = 0 ; i < serverlist_cachecount ; i++ ) {
500 serverlist_entry_t *entry = &serverlist_cache[i];
501 // also display entries that are currently being refreshed [11/8/2007 Black]
502 if( entry->query == SQS_QUERIED || entry->query == SQS_REFRESHING )
503 ServerList_ViewList_Insert( entry );
507 void ServerList_ResetMasks(void)
511 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
512 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
513 // numbots needs to be compared to -1 to always succeed
514 for(i = 0; i < SERVERLIST_ANDMASKCOUNT; ++i)
515 serverlist_andmasks[i].info.numbots = -1;
516 for(i = 0; i < SERVERLIST_ORMASKCOUNT; ++i)
517 serverlist_ormasks[i].info.numbots = -1;
520 void ServerList_GetPlayerStatistics(int *numplayerspointer, int *maxplayerspointer)
523 int numplayers = 0, maxplayers = 0;
524 for (i = 0;i < serverlist_cachecount;i++)
526 if (serverlist_cache[i].query == SQS_QUERIED)
528 numplayers += serverlist_cache[i].info.numhumans;
529 maxplayers += serverlist_cache[i].info.maxplayers;
532 *numplayerspointer = numplayers;
533 *maxplayerspointer = maxplayers;
537 static void _ServerList_Test(void)
540 if (serverlist_maxcachecount <= 1024)
542 serverlist_maxcachecount = 1024;
543 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
545 for( i = 0 ; i < 1024 ; i++ ) {
546 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
547 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
548 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
549 serverlist_cache[serverlist_cachecount].finished = true;
550 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 );
551 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
552 serverlist_cachecount++;
557 void ServerList_QueryList(qboolean resetcache, qboolean querydp, qboolean queryqw, qboolean consoleoutput)
559 masterquerytime = realtime;
560 masterquerycount = 0;
561 masterreplycount = 0;
563 serverquerycount = 0;
564 serverreplycount = 0;
565 serverlist_cachecount = 0;
566 serverlist_viewcount = 0;
567 serverlist_maxcachecount = 0;
568 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
570 // refresh all entries
572 for( n = 0 ; n < serverlist_cachecount ; n++ ) {
573 serverlist_entry_t *entry = &serverlist_cache[ n ];
574 entry->query = SQS_REFRESHING;
575 entry->querycounter = 0;
578 serverlist_consoleoutput = consoleoutput;
580 //_ServerList_Test();
582 NetConn_QueryMasters(querydp, queryqw);
587 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
591 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
592 Thread_LockMutex(netconn_mutex);
593 length = LHNET_Read(mysocket, data, maxlength, peeraddress);
594 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
595 Thread_UnlockMutex(netconn_mutex);
598 if (cl_netpacketloss_receive.integer)
599 for (i = 0;i < cl_numsockets;i++)
600 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_receive.integer)
602 if (developer_networking.integer)
604 char addressstring[128], addressstring2[128];
605 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
608 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
609 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length, addressstring2);
610 Com_HexDumpToConsole((unsigned char *)data, length);
613 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length);
618 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
622 if (cl_netpacketloss_send.integer)
623 for (i = 0;i < cl_numsockets;i++)
624 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_send.integer)
626 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
627 Thread_LockMutex(netconn_mutex);
628 ret = LHNET_Write(mysocket, data, length, peeraddress);
629 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
630 Thread_UnlockMutex(netconn_mutex);
631 if (developer_networking.integer)
633 char addressstring[128], addressstring2[128];
634 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
635 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
636 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)");
637 Com_HexDumpToConsole((unsigned char *)data, length);
642 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
644 // note this does not include the trailing NULL because we add that in the parser
645 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
648 qboolean NetConn_CanSend(netconn_t *conn)
650 conn->outgoing_packetcounter = (conn->outgoing_packetcounter + 1) % NETGRAPH_PACKETS;
651 conn->outgoing_netgraph[conn->outgoing_packetcounter].time = realtime;
652 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
653 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
654 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes = NETGRAPH_NOPACKET;
655 if (realtime > conn->cleartime)
659 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_CHOKEDPACKET;
664 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol, int rate, qboolean quakesignon_suppressreliables)
667 unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
668 unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
670 // if this packet was supposedly choked, but we find ourselves sending one
671 // anyway, make sure the size counting starts at zero
672 // (this mostly happens on level changes and disconnects and such)
673 if (conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes == NETGRAPH_CHOKEDPACKET)
674 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
676 if (protocol == PROTOCOL_QUAKEWORLD)
679 qboolean sendreliable;
681 // note that it is ok to send empty messages to the qw server,
682 // otherwise it won't respond to us at all
684 sendreliable = false;
685 // if the remote side dropped the last reliable message, resend it
686 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
688 // if the reliable transmit buffer is empty, copy the current message out
689 if (!conn->sendMessageLength && conn->message.cursize)
691 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
692 conn->sendMessageLength = conn->message.cursize;
693 SZ_Clear(&conn->message); // clear the message buffer
694 conn->qw.reliable_sequence ^= 1;
697 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
698 StoreLittleLong(sendbuffer, (unsigned int)conn->outgoing_unreliable_sequence | ((unsigned int)sendreliable<<31));
699 // last received unreliable packet number, and last received reliable packet number (0 or 1)
700 StoreLittleLong(sendbuffer + 4, (unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
702 conn->outgoing_unreliable_sequence++;
703 // client sends qport in every packet
704 if (conn == cls.netcon)
706 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
708 // also update cls.qw_outgoing_sequence
709 cls.qw_outgoing_sequence = conn->outgoing_unreliable_sequence;
711 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
713 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
717 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
719 // add the reliable message if there is one
722 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += conn->sendMessageLength + 28;
723 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
724 packetLen += conn->sendMessageLength;
725 conn->qw.last_reliable_sequence = conn->outgoing_unreliable_sequence;
728 // add the unreliable message if possible
729 if (packetLen + data->cursize <= 1400)
731 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += data->cursize + 28;
732 memcpy(sendbuffer + packetLen, data->data, data->cursize);
733 packetLen += data->cursize;
736 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
739 conn->unreliableMessagesSent++;
741 totallen += packetLen + 28;
745 unsigned int packetLen;
746 unsigned int dataLen;
751 // if a reliable message fragment has been lost, send it again
752 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
754 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
756 dataLen = conn->sendMessageLength;
761 dataLen = MAX_PACKETFRAGMENT;
765 packetLen = NET_HEADERSIZE + dataLen;
767 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
768 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence - 1);
769 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
771 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
773 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
774 if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
776 conn->lastSendTime = realtime;
777 conn->packetsReSent++;
780 totallen += sendmelen + 28;
783 // if we have a new reliable message to send, do so
784 if (!conn->sendMessageLength && conn->message.cursize && !quakesignon_suppressreliables)
786 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
788 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
789 conn->message.overflowed = true;
793 if (developer_networking.integer && conn == cls.netcon)
795 Con_Print("client sending reliable message to server:\n");
796 SZ_HexDumpToConsole(&conn->message);
799 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
800 conn->sendMessageLength = conn->message.cursize;
801 SZ_Clear(&conn->message);
803 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
805 dataLen = conn->sendMessageLength;
810 dataLen = MAX_PACKETFRAGMENT;
814 packetLen = NET_HEADERSIZE + dataLen;
816 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
817 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
818 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
820 conn->nq.sendSequence++;
822 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
824 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
826 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
828 conn->lastSendTime = realtime;
830 conn->reliableMessagesSent++;
832 totallen += sendmelen + 28;
835 // if we have an unreliable message to send, do so
838 packetLen = NET_HEADERSIZE + data->cursize;
840 if (packetLen > (int)sizeof(sendbuffer))
842 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
846 StoreBigLong(sendbuffer, packetLen | NETFLAG_UNRELIABLE);
847 StoreBigLong(sendbuffer + 4, conn->outgoing_unreliable_sequence);
848 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
850 conn->outgoing_unreliable_sequence++;
852 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
854 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
856 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
859 conn->unreliableMessagesSent++;
861 totallen += sendmelen + 28;
865 // delay later packets to obey rate limit
866 if (conn->cleartime < realtime - 0.1)
867 conn->cleartime = realtime - 0.1;
868 conn->cleartime = conn->cleartime + (double)totallen / (double)rate;
869 if (conn->cleartime < realtime)
870 conn->cleartime = realtime;
875 qboolean NetConn_HaveClientPorts(void)
877 return !!cl_numsockets;
880 qboolean NetConn_HaveServerPorts(void)
882 return !!sv_numsockets;
885 void NetConn_CloseClientPorts(void)
887 for (;cl_numsockets > 0;cl_numsockets--)
888 if (cl_sockets[cl_numsockets - 1])
889 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
892 static void NetConn_OpenClientPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport)
894 lhnetaddress_t address;
897 char addressstring2[1024];
898 if (addressstring && addressstring[0])
899 success = LHNETADDRESS_FromString(&address, addressstring, defaultport);
901 success = LHNETADDRESS_FromPort(&address, addresstype, defaultport);
904 if ((s = LHNET_OpenSocket_Connectionless(&address)))
906 cl_sockets[cl_numsockets++] = s;
907 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
908 if (addresstype != LHNETADDRESSTYPE_LOOP)
909 Con_Printf("Client opened a socket on address %s\n", addressstring2);
913 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
914 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
918 Con_Printf("Client unable to parse address %s\n", addressstring);
921 void NetConn_OpenClientPorts(void)
924 NetConn_CloseClientPorts();
926 Crypto_LoadKeys(); // client sockets
928 port = bound(0, cl_netport.integer, 65535);
929 if (cl_netport.integer != port)
930 Cvar_SetValueQuick(&cl_netport, port);
932 Con_Printf("Client using an automatically assigned port\n");
934 Con_Printf("Client using port %i\n", port);
935 NetConn_OpenClientPort(NULL, LHNETADDRESSTYPE_LOOP, 2);
936 NetConn_OpenClientPort(net_address.string, LHNETADDRESSTYPE_INET4, port);
938 NetConn_OpenClientPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port);
942 void NetConn_CloseServerPorts(void)
944 for (;sv_numsockets > 0;sv_numsockets--)
945 if (sv_sockets[sv_numsockets - 1])
946 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
949 static qboolean NetConn_OpenServerPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport, int range)
951 lhnetaddress_t address;
954 char addressstring2[1024];
957 for (port = defaultport; port <= defaultport + range; port++)
959 if (addressstring && addressstring[0])
960 success = LHNETADDRESS_FromString(&address, addressstring, port);
962 success = LHNETADDRESS_FromPort(&address, addresstype, port);
965 if ((s = LHNET_OpenSocket_Connectionless(&address)))
967 sv_sockets[sv_numsockets++] = s;
968 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
969 if (addresstype != LHNETADDRESSTYPE_LOOP)
970 Con_Printf("Server listening on address %s\n", addressstring2);
975 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
976 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
981 Con_Printf("Server unable to parse address %s\n", addressstring);
982 // if it cant parse one address, it wont be able to parse another for sure
989 void NetConn_OpenServerPorts(int opennetports)
992 NetConn_CloseServerPorts();
994 Crypto_LoadKeys(); // server sockets
996 NetConn_UpdateSockets();
997 port = bound(0, sv_netport.integer, 65535);
1000 Con_Printf("Server using port %i\n", port);
1001 if (sv_netport.integer != port)
1002 Cvar_SetValueQuick(&sv_netport, port);
1003 if (cls.state != ca_dedicated)
1004 NetConn_OpenServerPort(NULL, LHNETADDRESSTYPE_LOOP, 1, 1);
1008 qboolean ip4success = NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1009 NetConn_OpenServerPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port, ip4success ? 1 : 100);
1011 NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1014 if (sv_numsockets == 0)
1015 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
1018 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
1020 int i, a = LHNETADDRESS_GetAddressType(address);
1021 for (i = 0;i < cl_numsockets;i++)
1022 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
1023 return cl_sockets[i];
1027 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
1029 int i, a = LHNETADDRESS_GetAddressType(address);
1030 for (i = 0;i < sv_numsockets;i++)
1031 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
1032 return sv_sockets[i];
1036 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
1039 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
1040 conn->mysocket = mysocket;
1041 conn->peeraddress = *peeraddress;
1042 conn->lastMessageTime = realtime;
1043 conn->message.data = conn->messagedata;
1044 conn->message.maxsize = sizeof(conn->messagedata);
1045 conn->message.cursize = 0;
1046 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
1047 // reduce effectiveness of connection request floods
1048 conn->timeout = realtime + net_connecttimeout.value;
1049 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
1050 conn->next = netconn_list;
1051 netconn_list = conn;
1055 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
1056 void NetConn_Close(netconn_t *conn)
1059 // remove connection from list
1061 // allow the client to reconnect immediately
1062 NetConn_ClearConnectFlood(&(conn->peeraddress));
1064 if (conn == netconn_list)
1065 netconn_list = conn->next;
1068 for (c = netconn_list;c;c = c->next)
1070 if (c->next == conn)
1072 c->next = conn->next;
1076 // not found in list, we'll avoid crashing here...
1084 static int clientport = -1;
1085 static int clientport2 = -1;
1086 static int hostport = -1;
1087 void NetConn_UpdateSockets(void)
1091 if (cls.state != ca_dedicated)
1093 if (clientport2 != cl_netport.integer)
1095 clientport2 = cl_netport.integer;
1096 if (cls.state == ca_connected)
1097 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
1099 if (cls.state == ca_disconnected && clientport != clientport2)
1101 clientport = clientport2;
1102 NetConn_CloseClientPorts();
1104 if (cl_numsockets == 0)
1105 NetConn_OpenClientPorts();
1108 if (hostport != sv_netport.integer)
1110 hostport = sv_netport.integer;
1112 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
1115 for (j = 0;j < MAX_RCONS;j++)
1117 i = (cls.rcon_ringpos + j + 1) % MAX_RCONS;
1118 if(cls.rcon_commands[i][0])
1120 if(realtime > cls.rcon_timeout[i])
1123 LHNETADDRESS_ToString(&cls.rcon_addresses[i], s, sizeof(s), true);
1124 Con_Printf("rcon to %s (for command %s) failed: challenge request timed out\n", s, cls.rcon_commands[i]);
1125 cls.rcon_commands[i][0] = 0;
1133 static int NetConn_ReceivedMessage(netconn_t *conn, const unsigned char *data, size_t length, protocolversion_t protocol, double newtimeout)
1135 int originallength = length;
1136 unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
1137 unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1138 unsigned char cryptoreadbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1142 if (protocol == PROTOCOL_QUAKEWORLD)
1144 int sequence, sequence_ack;
1145 int reliable_ack, reliable_message;
1149 sequence = LittleLong(*((int *)(data + 0)));
1150 sequence_ack = LittleLong(*((int *)(data + 4)));
1154 if (conn != cls.netcon)
1159 // 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?)
1160 //qport = LittleShort(*((int *)(data + 8)));
1165 conn->packetsReceived++;
1166 reliable_message = (sequence >> 31) & 1;
1167 reliable_ack = (sequence_ack >> 31) & 1;
1168 sequence &= ~(1<<31);
1169 sequence_ack &= ~(1<<31);
1170 if (sequence <= conn->qw.incoming_sequence)
1172 //Con_DPrint("Got a stale datagram\n");
1175 count = sequence - (conn->qw.incoming_sequence + 1);
1178 conn->droppedDatagrams += count;
1179 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1182 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1183 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1184 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1185 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1186 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1189 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1190 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1191 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1192 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1193 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1194 if (reliable_ack == conn->qw.reliable_sequence)
1196 // received, now we will be able to send another reliable message
1197 conn->sendMessageLength = 0;
1198 conn->reliableMessagesReceived++;
1200 conn->qw.incoming_sequence = sequence;
1201 if (conn == cls.netcon)
1202 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
1203 conn->qw.incoming_acknowledged = sequence_ack;
1204 conn->qw.incoming_reliable_acknowledged = reliable_ack;
1205 if (reliable_message)
1206 conn->qw.incoming_reliable_sequence ^= 1;
1207 conn->lastMessageTime = realtime;
1208 conn->timeout = realtime + newtimeout;
1209 conn->unreliableMessagesReceived++;
1210 if (conn == cls.netcon)
1212 SZ_Clear(&cl_message);
1213 SZ_Write(&cl_message, data, length);
1214 MSG_BeginReading(&cl_message);
1218 SZ_Clear(&sv_message);
1219 SZ_Write(&sv_message, data, length);
1220 MSG_BeginReading(&sv_message);
1228 unsigned int sequence;
1233 originallength = length;
1234 data = (const unsigned char *) Crypto_DecryptPacket(&conn->crypto, data, length, cryptoreadbuffer, &length, sizeof(cryptoreadbuffer));
1240 qlength = (unsigned int)BuffBigLong(data);
1241 flags = qlength & ~NETFLAG_LENGTH_MASK;
1242 qlength &= NETFLAG_LENGTH_MASK;
1243 // control packets were already handled
1244 if (!(flags & NETFLAG_CTL) && qlength == length)
1246 sequence = BuffBigLong(data + 4);
1247 conn->packetsReceived++;
1250 if (flags & NETFLAG_UNRELIABLE)
1252 if (sequence >= conn->nq.unreliableReceiveSequence)
1254 if (sequence > conn->nq.unreliableReceiveSequence)
1256 count = sequence - conn->nq.unreliableReceiveSequence;
1257 conn->droppedDatagrams += count;
1258 //Con_DPrintf("Dropped %u datagram(s)\n", count);
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 = NETGRAPH_LOSTPACKET;
1264 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1265 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1268 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1269 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1270 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1271 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1272 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1273 conn->nq.unreliableReceiveSequence = sequence + 1;
1274 conn->lastMessageTime = realtime;
1275 conn->timeout = realtime + newtimeout;
1276 conn->unreliableMessagesReceived++;
1279 if (conn == cls.netcon)
1281 SZ_Clear(&cl_message);
1282 SZ_Write(&cl_message, data, length);
1283 MSG_BeginReading(&cl_message);
1287 SZ_Clear(&sv_message);
1288 SZ_Write(&sv_message, data, length);
1289 MSG_BeginReading(&sv_message);
1295 // Con_DPrint("Got a stale datagram\n");
1298 else if (flags & NETFLAG_ACK)
1300 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes += originallength + 28;
1301 if (sequence == (conn->nq.sendSequence - 1))
1303 if (sequence == conn->nq.ackSequence)
1305 conn->nq.ackSequence++;
1306 if (conn->nq.ackSequence != conn->nq.sendSequence)
1307 Con_DPrint("ack sequencing error\n");
1308 conn->lastMessageTime = realtime;
1309 conn->timeout = realtime + newtimeout;
1310 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
1312 unsigned int packetLen;
1313 unsigned int dataLen;
1316 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
1317 memmove(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
1319 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
1321 dataLen = conn->sendMessageLength;
1326 dataLen = MAX_PACKETFRAGMENT;
1330 packetLen = NET_HEADERSIZE + dataLen;
1332 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
1333 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
1334 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1336 conn->nq.sendSequence++;
1338 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1339 if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
1341 conn->lastSendTime = realtime;
1342 conn->packetsSent++;
1346 conn->sendMessageLength = 0;
1349 // Con_DPrint("Duplicate ACK received\n");
1352 // Con_DPrint("Stale ACK received\n");
1355 else if (flags & NETFLAG_DATA)
1357 unsigned char temppacket[8];
1358 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes += originallength + 28;
1359 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes += 8 + 28;
1360 StoreBigLong(temppacket, 8 | NETFLAG_ACK);
1361 StoreBigLong(temppacket + 4, sequence);
1362 sendme = Crypto_EncryptPacket(&conn->crypto, temppacket, 8, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1364 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
1365 if (sequence == conn->nq.receiveSequence)
1367 conn->lastMessageTime = realtime;
1368 conn->timeout = realtime + newtimeout;
1369 conn->nq.receiveSequence++;
1370 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1371 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1372 conn->receiveMessageLength += length;
1374 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1375 "Dropping the message!\n", sequence );
1376 conn->receiveMessageLength = 0;
1379 if (flags & NETFLAG_EOM)
1381 conn->reliableMessagesReceived++;
1382 length = conn->receiveMessageLength;
1383 conn->receiveMessageLength = 0;
1386 if (conn == cls.netcon)
1388 SZ_Clear(&cl_message);
1389 SZ_Write(&cl_message, conn->receiveMessage, length);
1390 MSG_BeginReading(&cl_message);
1394 SZ_Clear(&sv_message);
1395 SZ_Write(&sv_message, conn->receiveMessage, length);
1396 MSG_BeginReading(&sv_message);
1403 conn->receivedDuplicateCount++;
1411 static void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1414 cls.connect_trying = false;
1415 M_Update_Return_Reason("");
1416 // the connection request succeeded, stop current connection and set up a new connection
1418 // if we're connecting to a remote server, shut down any local server
1419 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1421 SV_LockThreadMutex();
1422 Host_ShutdownServer ();
1423 SV_UnlockThreadMutex();
1425 // allocate a net connection to keep track of things
1426 cls.netcon = NetConn_Open(mysocket, peeraddress);
1427 crypto = &cls.crypto;
1428 if(crypto && crypto->authenticated)
1430 Crypto_ServerFinishInstance(&cls.netcon->crypto, crypto);
1431 Con_Printf("%s connection to %s has been established: server is %s@%.*s, I am %.*s@%.*s\n",
1432 crypto->use_aes ? "Encrypted" : "Authenticated",
1433 cls.netcon->address,
1434 crypto->server_idfp[0] ? crypto->server_idfp : "-",
1435 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-",
1436 crypto_keyfp_recommended_length, crypto->client_idfp[0] ? crypto->client_idfp : "-",
1437 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-"
1440 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1441 key_dest = key_game;
1443 cls.demonum = -1; // not in the demo loop now
1444 cls.state = ca_connected;
1445 cls.signon = 0; // need all the signon messages before playing
1446 cls.protocol = initialprotocol;
1447 // reset move sequence numbering on this new connection
1448 cls.servermovesequence = 0;
1449 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1450 Cmd_ForwardStringToServer("new");
1451 if (cls.protocol == PROTOCOL_QUAKE)
1453 // write a keepalive (clc_nop) as it seems to greatly improve the
1454 // chances of connecting to a netquake server
1456 unsigned char buf[4];
1457 memset(&msg, 0, sizeof(msg));
1459 msg.maxsize = sizeof(buf);
1460 MSG_WriteChar(&msg, clc_nop);
1461 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000, false);
1465 int NetConn_IsLocalGame(void)
1467 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1472 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1476 serverlist_entry_t *entry = NULL;
1478 // search the cache for this server and update it
1479 for (n = 0;n < serverlist_cachecount;n++) {
1480 entry = &serverlist_cache[ n ];
1481 if (!strcmp(addressstring, entry->info.cname))
1485 if (n == serverlist_cachecount)
1487 // LAN search doesnt require an answer from the master server so we wont
1488 // know the ping nor will it be initialized already...
1491 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1494 if (serverlist_maxcachecount <= serverlist_cachecount)
1496 serverlist_maxcachecount += 64;
1497 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1499 entry = &serverlist_cache[n];
1501 memset(entry, 0, sizeof(*entry));
1502 // store the data the engine cares about (address and ping)
1503 strlcpy(entry->info.cname, addressstring, sizeof(entry->info.cname));
1504 entry->info.ping = 100000;
1505 entry->querytime = realtime;
1506 // if not in the slist menu we should print the server to console
1507 if (serverlist_consoleoutput)
1508 Con_Printf("querying %s\n", addressstring);
1509 ++serverlist_cachecount;
1511 // if this is the first reply from this server, count it as having replied
1512 pingtime = (int)((realtime - entry->querytime) * 1000.0 + 0.5);
1513 pingtime = bound(0, pingtime, 9999);
1514 if (entry->query == SQS_REFRESHING) {
1515 entry->info.ping = pingtime;
1516 entry->query = SQS_QUERIED;
1518 // convert to unsigned to catch the -1
1519 // 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]
1520 entry->info.ping = min((unsigned) entry->info.ping, (unsigned) pingtime);
1524 // other server info is updated by the caller
1528 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1530 serverlist_entry_t *entry = &serverlist_cache[n];
1531 serverlist_info_t *info = &entry->info;
1532 // update description strings for engine menu and console output
1533 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);
1534 dpsnprintf(entry->line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game,
1536 info->gameversion != gameversion.integer
1539 gameversion_min.integer >= 0 // min/max range set by user/mod?
1540 && gameversion_max.integer >= 0
1541 && gameversion_min.integer <= info->gameversion // version of server in min/max range?
1542 && gameversion_max.integer >= info->gameversion
1545 info->mod, info->map);
1546 if (entry->query == SQS_QUERIED)
1548 if(!serverlist_paused)
1549 ServerList_ViewList_Remove(entry);
1551 // if not in the slist menu we should print the server to console (if wanted)
1552 else if( serverlist_consoleoutput )
1553 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1554 // and finally, update the view set
1555 if(!serverlist_paused)
1556 ServerList_ViewList_Insert( entry );
1557 // update the entry's state
1558 serverlist_cache[n].query = SQS_QUERIED;
1561 // returns true, if it's sensible to continue the processing
1562 static qboolean NetConn_ClientParsePacket_ServerList_PrepareQuery( int protocol, const char *ipstring, qboolean isfavorite ) {
1564 serverlist_entry_t *entry;
1566 // ignore the rest of the message if the serverlist is full
1567 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1569 // also ignore it if we have already queried it (other master server response)
1570 for( n = 0 ; n < serverlist_cachecount ; n++ )
1571 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1574 if( n < serverlist_cachecount ) {
1575 // the entry has already been queried once or
1579 if (serverlist_maxcachecount <= n)
1581 serverlist_maxcachecount += 64;
1582 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1585 entry = &serverlist_cache[n];
1587 memset(entry, 0, sizeof(entry));
1588 entry->protocol = protocol;
1589 // store the data the engine cares about (address and ping)
1590 strlcpy (entry->info.cname, ipstring, sizeof(entry->info.cname));
1592 entry->info.isfavorite = isfavorite;
1594 // no, then reset the ping right away
1595 entry->info.ping = -1;
1596 // we also want to increase the serverlist_cachecount then
1597 serverlist_cachecount++;
1600 entry->query = SQS_QUERYING;
1605 static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *senderaddress, const unsigned char *data, int length, qboolean isextended)
1608 if (serverlist_consoleoutput)
1609 Con_Printf("received DarkPlaces %sserver list...\n", isextended ? "extended " : "");
1612 char ipstring [128];
1615 if (data[0] == '\\')
1617 unsigned short port = data[5] * 256 + data[6];
1619 if (port != 0 && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF))
1620 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%hu", data[1], data[2], data[3], data[4], port);
1622 // move on to next address in packet
1627 else if (data[0] == '/' && isextended && length >= 19)
1629 unsigned short port = data[17] * 256 + data[18];
1637 /// \TODO: make some basic checks of the IP address (broadcast, ...)
1639 ifname = LHNETADDRESS_GetInterfaceName(senderaddress, ifnamebuf, sizeof(ifnamebuf));
1642 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x%%%s]:%hu",
1643 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1644 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1650 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x]:%hu",
1651 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1652 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1657 // move on to next address in packet
1663 Con_Print("Error while parsing the server list\n");
1667 if (serverlist_consoleoutput && developer_networking.integer)
1668 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1670 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, ipstring, false ) ) {
1676 // begin or resume serverlist queries
1677 serverlist_querysleep = false;
1678 serverlist_querywaittime = realtime + 3;
1681 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1683 qboolean fromserver;
1684 int ret, c, control;
1686 char *string, addressstring2[128], ipstring[32];
1687 char stringbuf[16384];
1688 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1690 char infostringvalue[MAX_INPUTLINE];
1693 // quakeworld ingame packet
1694 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1696 // convert the address to a string incase we need it
1697 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1699 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1701 // received a command string - strip off the packaging and put it
1702 // into our string buffer with NULL termination
1705 length = min(length, (int)sizeof(stringbuf) - 1);
1706 memcpy(stringbuf, data, length);
1707 stringbuf[length] = 0;
1710 if (developer_networking.integer)
1712 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1713 Com_HexDumpToConsole(data, length);
1716 sendlength = sizeof(senddata) - 4;
1717 switch(Crypto_ClientParsePacket(string, length, senddata+4, &sendlength, peeraddress))
1719 case CRYPTO_NOMATCH:
1725 memcpy(senddata, "\377\377\377\377", 4);
1726 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
1729 case CRYPTO_DISCARD:
1732 memcpy(senddata, "\377\377\377\377", 4);
1733 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
1737 case CRYPTO_REPLACE:
1738 string = senddata+4;
1739 length = sendlength;
1743 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying)
1746 for (j = 0;j < MAX_RCONS;j++)
1748 // note: this value from i is used outside the loop too...
1749 i = (cls.rcon_ringpos + j) % MAX_RCONS;
1750 if(cls.rcon_commands[i][0])
1751 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[i]))
1760 dpsnprintf(argbuf, sizeof(argbuf), "%s %s", string + 10, cls.rcon_commands[i]);
1761 memcpy(buf, "\377\377\377\377srcon HMAC-MD4 CHALLENGE ", 29);
1763 e = strchr(rcon_password.string, ' ');
1764 n = e ? e-rcon_password.string : (int)strlen(rcon_password.string);
1766 if(HMAC_MDFOUR_16BYTES((unsigned char *) (buf + 29), (unsigned char *) argbuf, strlen(argbuf), (unsigned char *) rcon_password.string, n))
1770 strlcpy(buf + 46, argbuf, sizeof(buf) - 46);
1771 NetConn_Write(mysocket, buf, 46 + strlen(buf + 46), peeraddress);
1772 cls.rcon_commands[i][0] = 0;
1775 for (k = 0;k < MAX_RCONS;k++)
1776 if(cls.rcon_commands[k][0])
1777 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[k]))
1782 NetConn_WriteString(mysocket, "\377\377\377\377getchallenge", peeraddress);
1783 // extend the timeout on other requests as we asked for a challenge
1784 for (l = 0;l < MAX_RCONS;l++)
1785 if(cls.rcon_commands[l][0])
1786 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[l]))
1787 cls.rcon_timeout[l] = realtime + rcon_secure_challengetimeout.value;
1790 return true; // we used up the challenge, so we can't use this oen for connecting now anyway
1794 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1796 // darkplaces or quake3
1797 char protocolnames[1400];
1798 Protocol_Names(protocolnames, sizeof(protocolnames));
1799 Con_DPrintf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1800 M_Update_Return_Reason("Got challenge response");
1801 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1802 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1803 // TODO: add userinfo stuff here instead of using NQ commands?
1804 NetConn_WriteString(mysocket, va(vabuf, sizeof(vabuf), "\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s%s\\challenge\\%s", protocolnames, cls.connect_userinfo, string + 10), peeraddress);
1807 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1809 // darkplaces or quake3
1810 M_Update_Return_Reason("Accepted");
1811 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1814 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1816 char rejectreason[128];
1817 cls.connect_trying = false;
1819 length = min(length - 7, (int)sizeof(rejectreason) - 1);
1820 memcpy(rejectreason, string, length);
1821 rejectreason[length] = 0;
1822 M_Update_Return_Reason(rejectreason);
1825 if (length >= 15 && !memcmp(string, "statusResponse\x0A", 15))
1827 serverlist_info_t *info;
1832 // search the cache for this server and update it
1833 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1837 info = &serverlist_cache[n].info;
1842 info->qcstatus[0] = 0;
1843 info->players[0] = 0;
1844 info->protocol = -1;
1845 info->numplayers = 0;
1847 info->maxplayers = 0;
1848 info->gameversion = 0;
1850 p = strchr(string, '\n');
1853 *p = 0; // cut off the string there
1857 Con_Printf("statusResponse without players block?\n");
1859 if ((s = InfoString_GetValue(string, "gamename" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->game, s, sizeof (info->game));
1860 if ((s = InfoString_GetValue(string, "modname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1861 if ((s = InfoString_GetValue(string, "mapname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1862 if ((s = InfoString_GetValue(string, "hostname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->name, s, sizeof (info->name));
1863 if ((s = InfoString_GetValue(string, "protocol" , infostringvalue, sizeof(infostringvalue))) != NULL) info->protocol = atoi(s);
1864 if ((s = InfoString_GetValue(string, "clients" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numplayers = atoi(s);
1865 if ((s = InfoString_GetValue(string, "bots" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numbots = atoi(s);
1866 if ((s = InfoString_GetValue(string, "sv_maxclients", infostringvalue, sizeof(infostringvalue))) != NULL) info->maxplayers = atoi(s);
1867 if ((s = InfoString_GetValue(string, "gameversion" , infostringvalue, sizeof(infostringvalue))) != NULL) info->gameversion = atoi(s);
1868 if ((s = InfoString_GetValue(string, "qcstatus" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1869 if (p != NULL) strlcpy(info->players, p, sizeof(info->players));
1870 info->numhumans = info->numplayers - max(0, info->numbots);
1871 info->freeslots = info->maxplayers - info->numplayers;
1873 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1877 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1879 serverlist_info_t *info;
1883 // search the cache for this server and update it
1884 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1888 info = &serverlist_cache[n].info;
1893 info->qcstatus[0] = 0;
1894 info->players[0] = 0;
1895 info->protocol = -1;
1896 info->numplayers = 0;
1898 info->maxplayers = 0;
1899 info->gameversion = 0;
1901 if ((s = InfoString_GetValue(string, "gamename" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->game, s, sizeof (info->game));
1902 if ((s = InfoString_GetValue(string, "modname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1903 if ((s = InfoString_GetValue(string, "mapname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1904 if ((s = InfoString_GetValue(string, "hostname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->name, s, sizeof (info->name));
1905 if ((s = InfoString_GetValue(string, "protocol" , infostringvalue, sizeof(infostringvalue))) != NULL) info->protocol = atoi(s);
1906 if ((s = InfoString_GetValue(string, "clients" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numplayers = atoi(s);
1907 if ((s = InfoString_GetValue(string, "bots" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numbots = atoi(s);
1908 if ((s = InfoString_GetValue(string, "sv_maxclients", infostringvalue, sizeof(infostringvalue))) != NULL) info->maxplayers = atoi(s);
1909 if ((s = InfoString_GetValue(string, "gameversion" , infostringvalue, sizeof(infostringvalue))) != NULL) info->gameversion = atoi(s);
1910 if ((s = InfoString_GetValue(string, "qcstatus" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1911 info->numhumans = info->numplayers - max(0, info->numbots);
1912 info->freeslots = info->maxplayers - info->numplayers;
1914 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1918 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1920 // Extract the IP addresses
1923 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, false);
1926 if (!strncmp(string, "getserversExtResponse", 21) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1928 // Extract the IP addresses
1931 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, true);
1934 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1936 // Extract the IP addresses
1940 if (serverlist_consoleoutput)
1941 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1942 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1944 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1945 if (serverlist_consoleoutput && developer_networking.integer)
1946 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1948 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, ipstring, false ) ) {
1952 // move on to next address in packet
1956 // begin or resume serverlist queries
1957 serverlist_querysleep = false;
1958 serverlist_querywaittime = realtime + 3;
1961 if (!strncmp(string, "extResponse ", 12))
1963 ++cl_net_extresponse_count;
1964 if(cl_net_extresponse_count > NET_EXTRESPONSE_MAX)
1965 cl_net_extresponse_count = NET_EXTRESPONSE_MAX;
1966 cl_net_extresponse_last = (cl_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
1967 dpsnprintf(cl_net_extresponse[cl_net_extresponse_last], sizeof(cl_net_extresponse[cl_net_extresponse_last]), "\"%s\" %s", addressstring2, string + 12);
1970 if (!strncmp(string, "ping", 4))
1972 if (developer_extra.integer)
1973 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
1974 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1977 if (!strncmp(string, "ack", 3))
1979 // QuakeWorld compatibility
1980 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1982 // challenge message
1983 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1984 M_Update_Return_Reason("Got QuakeWorld challenge response");
1985 cls.qw_qport = qport.integer;
1986 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1987 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1988 NetConn_WriteString(mysocket, va(vabuf, sizeof(vabuf), "\377\377\377\377connect %i %i %i \"%s%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo, cls.connect_userinfo), peeraddress);
1991 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1994 M_Update_Return_Reason("QuakeWorld Accepted");
1995 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1998 if (length > 2 && !memcmp(string, "n\\", 2))
2000 serverlist_info_t *info;
2004 if (serverlist_consoleoutput && developer_networking.integer >= 2)
2005 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
2008 // search the cache for this server and update it
2009 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2013 info = &serverlist_cache[n].info;
2014 strlcpy(info->game, "QuakeWorld", sizeof(info->game));
2015 if ((s = InfoString_GetValue(string, "*gamedir" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
2016 if ((s = InfoString_GetValue(string, "map" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
2017 if ((s = InfoString_GetValue(string, "hostname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
2019 info->numplayers = 0; // updated below
2020 info->numhumans = 0; // updated below
2021 if ((s = InfoString_GetValue(string, "maxclients" , infostringvalue, sizeof(infostringvalue))) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
2022 if ((s = InfoString_GetValue(string, "gameversion" , infostringvalue, sizeof(infostringvalue))) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
2024 // count active players on server
2025 // (we could gather more info, but we're just after the number)
2026 s = strchr(string, '\n');
2030 while (s < string + length)
2032 for (;s < string + length && *s != '\n';s++)
2034 if (s >= string + length)
2042 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2046 if (string[0] == 'n')
2049 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
2051 // we may not have liked the packet, but it was a command packet, so
2052 // we're done processing this packet now
2055 // quakeworld ingame packet
2056 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2059 CL_ParseServerMessage();
2062 // netquake control packets, supported for compatibility only
2063 if (length >= 5 && (control = BuffBigLong(data)) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length && !ENCRYPTION_REQUIRED)
2066 serverlist_info_t *info;
2070 SZ_Clear(&cl_message);
2071 SZ_Write(&cl_message, data, length);
2072 MSG_BeginReading(&cl_message);
2073 c = MSG_ReadByte(&cl_message);
2077 if (developer_extra.integer)
2078 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
2079 if (cls.connect_trying)
2081 lhnetaddress_t clientportaddress;
2082 clientportaddress = *peeraddress;
2083 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong(&cl_message));
2084 // extra ProQuake stuff
2086 cls.proquake_servermod = MSG_ReadByte(&cl_message); // MOD_PROQUAKE
2088 cls.proquake_servermod = 0;
2090 cls.proquake_serverversion = MSG_ReadByte(&cl_message); // version * 10
2092 cls.proquake_serverversion = 0;
2094 cls.proquake_serverflags = MSG_ReadByte(&cl_message); // flags (mainly PQF_CHEATFREE)
2096 cls.proquake_serverflags = 0;
2097 if (cls.proquake_servermod == 1)
2098 Con_Printf("Connected to ProQuake %.1f server, enabling precise aim\n", cls.proquake_serverversion / 10.0f);
2099 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
2100 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
2101 M_Update_Return_Reason("Accepted");
2102 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
2106 if (developer_extra.integer)
2107 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
2108 cls.connect_trying = false;
2109 M_Update_Return_Reason((char *)MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)));
2111 case CCREP_SERVER_INFO:
2112 if (developer_extra.integer)
2113 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
2114 // LordHavoc: because the quake server may report weird addresses
2115 // we just ignore it and keep the real address
2116 MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring));
2117 // search the cache for this server and update it
2118 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2122 info = &serverlist_cache[n].info;
2123 strlcpy(info->game, "Quake", sizeof(info->game));
2124 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
2125 strlcpy(info->name, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(info->name));
2126 strlcpy(info->map , MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(info->map));
2127 info->numplayers = MSG_ReadByte(&cl_message);
2128 info->maxplayers = MSG_ReadByte(&cl_message);
2129 info->protocol = MSG_ReadByte(&cl_message);
2131 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2134 case CCREP_RCON: // RocketGuy: ProQuake rcon support
2135 if (developer_extra.integer)
2136 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_RCON from %s.\n", addressstring2);
2138 Con_Printf("%s\n", MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)));
2140 case CCREP_PLAYER_INFO:
2141 // we got a CCREP_PLAYER_INFO??
2142 //if (developer_extra.integer)
2143 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
2145 case CCREP_RULE_INFO:
2146 // we got a CCREP_RULE_INFO??
2147 //if (developer_extra.integer)
2148 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
2153 SZ_Clear(&cl_message);
2154 // we may not have liked the packet, but it was a valid control
2155 // packet, so we're done processing this packet now
2159 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2160 CL_ParseServerMessage();
2164 void NetConn_QueryQueueFrame(void)
2170 static double querycounter = 0;
2172 if(!net_slist_pause.integer && serverlist_paused)
2173 ServerList_RebuildViewList();
2174 serverlist_paused = net_slist_pause.integer != 0;
2176 if (serverlist_querysleep)
2179 // apply a cool down time after master server replies,
2180 // to avoid messing up the ping times on the servers
2181 if (serverlist_querywaittime > realtime)
2184 // each time querycounter reaches 1.0 issue a query
2185 querycounter += cl.realframetime * net_slist_queriespersecond.value;
2186 maxqueries = (int)querycounter;
2187 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
2188 querycounter -= maxqueries;
2190 if( maxqueries == 0 ) {
2194 // scan serverlist and issue queries as needed
2195 serverlist_querysleep = true;
2197 timeouttime = realtime - net_slist_timeout.value;
2198 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
2200 serverlist_entry_t *entry = &serverlist_cache[ index ];
2201 if( entry->query != SQS_QUERYING && entry->query != SQS_REFRESHING )
2206 serverlist_querysleep = false;
2207 if( entry->querycounter != 0 && entry->querytime > timeouttime )
2212 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
2214 lhnetaddress_t address;
2217 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
2218 if (entry->protocol == PROTOCOL_QUAKEWORLD)
2220 for (socket = 0; socket < cl_numsockets ; socket++)
2221 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
2225 for (socket = 0; socket < cl_numsockets ; socket++)
2226 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getstatus", &address);
2229 // update the entry fields
2230 entry->querytime = realtime;
2231 entry->querycounter++;
2233 // if not in the slist menu we should print the server to console
2234 if (serverlist_consoleoutput)
2235 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
2241 // have we tried to refresh this server?
2242 if( entry->query == SQS_REFRESHING ) {
2243 // yes, so update the reply count (since its not responding anymore)
2245 if(!serverlist_paused)
2246 ServerList_ViewList_Remove(entry);
2248 entry->query = SQS_TIMEDOUT;
2253 void NetConn_ClientFrame(void)
2256 lhnetaddress_t peeraddress;
2257 unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
2258 NetConn_UpdateSockets();
2259 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
2261 if (cls.connect_remainingtries == 0)
2262 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
2263 cls.connect_nextsendtime = realtime + 1;
2264 cls.connect_remainingtries--;
2265 if (cls.connect_remainingtries <= -10)
2267 cls.connect_trying = false;
2268 M_Update_Return_Reason("Connect: Failed");
2271 // try challenge first (newer DP server or QW)
2272 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
2273 // then try netquake as a fallback (old server, or netquake)
2274 SZ_Clear(&cl_message);
2275 // save space for the header, filled in later
2276 MSG_WriteLong(&cl_message, 0);
2277 MSG_WriteByte(&cl_message, CCREQ_CONNECT);
2278 MSG_WriteString(&cl_message, "QUAKE");
2279 MSG_WriteByte(&cl_message, NET_PROTOCOL_VERSION);
2280 // extended proquake stuff
2281 MSG_WriteByte(&cl_message, 1); // mod = MOD_PROQUAKE
2282 // this version matches ProQuake 3.40, the first version to support
2283 // the NAT fix, and it only supports the NAT fix for ProQuake 3.40 or
2284 // higher clients, so we pretend we are that version...
2285 MSG_WriteByte(&cl_message, 34); // version * 10
2286 MSG_WriteByte(&cl_message, 0); // flags
2287 MSG_WriteLong(&cl_message, 0); // password
2288 // write the packetsize now...
2289 StoreBigLong(cl_message.data, NETFLAG_CTL | (cl_message.cursize & NETFLAG_LENGTH_MASK));
2290 NetConn_Write(cls.connect_mysocket, cl_message.data, cl_message.cursize, &cls.connect_address);
2291 SZ_Clear(&cl_message);
2293 for (i = 0;i < cl_numsockets;i++)
2295 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2297 // R_TimeReport("clientreadnetwork");
2298 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
2299 // R_TimeReport("clientparsepacket");
2302 NetConn_QueryQueueFrame();
2303 if (cls.netcon && realtime > cls.netcon->timeout && !sv.active)
2305 Con_Print("Connection timed out\n");
2307 SV_LockThreadMutex();
2308 Host_ShutdownServer ();
2309 SV_UnlockThreadMutex();
2313 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
2317 for (i = 0;i < bufferlength - 1;i++)
2321 c = rand () % (127 - 33) + 33;
2322 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
2328 /// (div0) build the full response only if possible; better a getinfo response than no response at all if getstatus won't fit
2329 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
2331 prvm_prog_t *prog = SVVM_prog;
2333 unsigned int nb_clients = 0, nb_bots = 0, i;
2336 const char *crypto_idstring;
2339 // How many clients are there?
2340 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2342 if (svs.clients[i].active)
2345 if (!svs.clients[i].netconnection)
2351 str = PRVM_GetString(prog, PRVM_serverglobalstring(worldstatus));
2357 for(q = str; *q && (size_t)(p - qcstatus) < (sizeof(qcstatus) - 1); ++q)
2358 if(*q != '\\' && *q != '\n')
2363 /// \TODO: we should add more information for the full status string
2364 crypto_idstring = Crypto_GetInfoResponseDataString();
2365 length = dpsnprintf(out_msg, out_size,
2366 "\377\377\377\377%s\x0A"
2367 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
2368 "\\clients\\%d\\bots\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
2373 fullstatus ? "statusResponse" : "infoResponse",
2374 gamename, com_modname, gameversion.integer, svs.maxclients,
2375 nb_clients, nb_bots, sv.worldbasename, hostname.string, NET_PROTOCOL_VERSION,
2376 *qcstatus ? "\\qcstatus\\" : "", qcstatus,
2377 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
2378 crypto_idstring ? "\\d0_blind_id\\" : "", crypto_idstring ? crypto_idstring : "",
2379 fullstatus ? "\n" : "");
2381 // Make sure it fits in the buffer
2391 savelength = length;
2393 ptr = out_msg + length;
2394 left = (int)out_size - length;
2396 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2398 client_t *cl = &svs.clients[i];
2401 int nameind, cleanind, pingvalue;
2403 char cleanname [sizeof(cl->name)];
2407 // Remove all characters '"' and '\' in the player name
2412 curchar = cl->name[nameind++];
2413 if (curchar != '"' && curchar != '\\')
2415 cleanname[cleanind++] = curchar;
2416 if (cleanind == sizeof(cleanname) - 1)
2419 } while (curchar != '\0');
2420 cleanname[cleanind] = 0; // cleanind is always a valid index even at this point
2422 pingvalue = (int)(cl->ping * 1000.0f);
2423 if(cl->netconnection)
2424 pingvalue = bound(1, pingvalue, 9999);
2429 ed = PRVM_EDICT_NUM(i + 1);
2430 str = PRVM_GetString(prog, PRVM_serveredictstring(ed, clientstatus));
2436 for(q = str; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q)
2437 if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q))
2442 if ((gamemode == GAME_NEXUIZ || gamemode == GAME_XONOTIC) && (teamplay.integer > 0))
2444 if(cl->frags == -666) // spectator
2445 strlcpy(teambuf, " 0", sizeof(teambuf));
2446 else if(cl->colors == 0x44) // red team
2447 strlcpy(teambuf, " 1", sizeof(teambuf));
2448 else if(cl->colors == 0xDD) // blue team
2449 strlcpy(teambuf, " 2", sizeof(teambuf));
2450 else if(cl->colors == 0xCC) // yellow team
2451 strlcpy(teambuf, " 3", sizeof(teambuf));
2452 else if(cl->colors == 0x99) // pink team
2453 strlcpy(teambuf, " 4", sizeof(teambuf));
2455 strlcpy(teambuf, " 0", sizeof(teambuf));
2460 // note: team number is inserted according to SoF2 protocol
2462 length = dpsnprintf(ptr, left, "%s %d%s \"%s\"\n",
2468 length = dpsnprintf(ptr, left, "%d %d%s \"%s\"\n",
2477 // turn it into an infoResponse!
2478 out_msg[savelength] = 0;
2479 memcpy(out_msg + 4, "infoResponse\x0A", 13);
2480 memmove(out_msg + 17, out_msg + 19, savelength - 19);
2495 static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
2497 int floodslotnum, bestfloodslotnum;
2498 double bestfloodtime;
2499 lhnetaddress_t noportpeeraddress;
2500 // see if this is a connect flood
2501 noportpeeraddress = *peeraddress;
2502 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2503 bestfloodslotnum = 0;
2504 bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
2505 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
2507 if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
2509 bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
2510 bestfloodslotnum = floodslotnum;
2512 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
2514 // this address matches an ongoing flood address
2515 if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
2517 // renew the ban on this address so it does not expire
2518 // until the flood has subsided
2519 sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
2520 //Con_Printf("Flood detected!\n");
2523 // the flood appears to have subsided, so allow this
2524 bestfloodslotnum = floodslotnum; // reuse the same slot
2528 // begin a new timeout on this address
2529 sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
2530 sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
2531 //Con_Printf("Flood detection initiated!\n");
2535 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
2538 lhnetaddress_t noportpeeraddress;
2539 // see if this is a connect flood
2540 noportpeeraddress = *peeraddress;
2541 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2542 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
2544 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
2546 // this address matches an ongoing flood address
2548 sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
2549 sv.connectfloodaddresses[floodslotnum].lasttime = 0;
2550 //Con_Printf("Flood cleared!\n");
2555 typedef qboolean (*rcon_matchfunc_t) (lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen);
2557 static qboolean hmac_mdfour_time_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2562 t1 = (long) time(NULL);
2563 t2 = strtol(s, NULL, 0);
2564 if(abs(t1 - t2) > rcon_secure_maxdiff.integer)
2567 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
2570 return !memcmp(mdfourbuf, hash, 16);
2573 static qboolean hmac_mdfour_challenge_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2578 if(slen < (int)(sizeof(challenge[0].string)) - 1)
2581 // validate the challenge
2582 for (i = 0;i < MAX_CHALLENGES;i++)
2583 if(challenge[i].time > 0)
2584 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strncmp(challenge[i].string, s, sizeof(challenge[0].string) - 1))
2586 // if the challenge is not recognized, drop the packet
2587 if (i == MAX_CHALLENGES)
2590 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
2593 if(memcmp(mdfourbuf, hash, 16))
2596 // unmark challenge to prevent replay attacks
2597 challenge[i].time = 0;
2602 static qboolean plaintext_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2604 return !strcmp(password, hash);
2607 /// returns a string describing the user level, or NULL for auth failure
2608 static 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)
2610 const char *text, *userpass_start, *userpass_end, *userpass_startpass;
2611 static char buf[MAX_INPUTLINE];
2613 qboolean restricted = false;
2614 qboolean have_usernames = false;
2617 userpass_start = rcon_password.string;
2618 while((userpass_end = strchr(userpass_start, ' ')))
2620 have_usernames = true;
2621 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2623 if(comparator(peeraddress, buf, password, cs, cslen))
2625 userpass_start = userpass_end + 1;
2627 if(userpass_start[0])
2629 userpass_end = userpass_start + strlen(userpass_start);
2630 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2635 have_usernames = false;
2636 userpass_start = rcon_restricted_password.string;
2637 while((userpass_end = strchr(userpass_start, ' ')))
2639 have_usernames = true;
2640 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2642 if(comparator(peeraddress, buf, password, cs, cslen))
2644 userpass_start = userpass_end + 1;
2646 if(userpass_start[0])
2648 userpass_end = userpass_start + strlen(userpass_start);
2649 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2653 return NULL; // DENIED
2656 for(text = s; text != endpos; ++text)
2657 if((signed char) *text > 0 && ((signed char) *text < (signed char) ' ' || *text == ';'))
2658 return NULL; // block possible exploits against the parser/alias expansion
2662 size_t l = strlen(s);
2665 hasquotes = (strchr(s, '"') != NULL);
2666 // sorry, we can't allow these substrings in wildcard expressions,
2667 // as they can mess with the argument counts
2668 text = rcon_restricted_commands.string;
2669 while(COM_ParseToken_Console(&text))
2671 // com_token now contains a pattern to check for...
2672 if(strchr(com_token, '*') || strchr(com_token, '?')) // wildcard expression, * can only match a SINGLE argument
2675 if(matchpattern_with_separator(s, com_token, true, " ", true)) // note how we excluded tab, newline etc. above
2678 else if(strchr(com_token, ' ')) // multi-arg expression? must match in whole
2680 if(!strcmp(com_token, s))
2683 else // single-arg expression? must match the beginning of the command
2685 if(!strcmp(com_token, s))
2687 if(!memcmp(va(vabuf, sizeof(vabuf), "%s ", com_token), s, strlen(com_token) + 1))
2691 // if we got here, nothing matched!
2699 userpass_startpass = strchr(userpass_start, ':');
2700 if(have_usernames && userpass_startpass && userpass_startpass < userpass_end)
2701 return va(vabuf, sizeof(vabuf), "%srcon (username %.*s)", restricted ? "restricted " : "", (int)(userpass_startpass-userpass_start), userpass_start);
2703 return va(vabuf, sizeof(vabuf), "%srcon", restricted ? "restricted " : "");
2706 static void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos, qboolean proquakeprotocol)
2710 // looks like a legitimate rcon command with the correct password
2711 const char *s_ptr = s;
2712 Con_Printf("server received %s command from %s: ", userlevel, host_client ? host_client->name : addressstring2);
2713 while(s_ptr != endpos)
2715 size_t l = strlen(s_ptr);
2717 Con_Printf(" %s;", s_ptr);
2722 if (!host_client || !host_client->netconnection || LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2723 Con_Rcon_Redirect_Init(mysocket, peeraddress, proquakeprotocol);
2726 size_t l = strlen(s);
2729 client_t *host_client_save = host_client;
2730 Cmd_ExecuteString(s, src_command, true);
2731 host_client = host_client_save;
2732 // in case it is a command that changes host_client (like restart)
2736 Con_Rcon_Redirect_End();
2740 Con_Printf("server denied rcon access to %s\n", host_client ? host_client->name : addressstring2);
2744 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
2746 int i, ret, clientnum, best;
2749 char *s, *string, response[1400], addressstring2[128];
2750 static char stringbuf[16384]; // server only
2751 qboolean islocal = (LHNETADDRESS_GetAddressType(peeraddress) == LHNETADDRESSTYPE_LOOP);
2752 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
2753 size_t sendlength, response_len;
2754 char infostringvalue[MAX_INPUTLINE];
2760 // convert the address to a string incase we need it
2761 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
2763 // see if we can identify the sender as a local player
2764 // (this is necessary for rcon to send a reliable reply if the client is
2765 // actually on the server, not sending remotely)
2766 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2767 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
2769 if (i == svs.maxclients)
2772 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
2774 // received a command string - strip off the packaging and put it
2775 // into our string buffer with NULL termination
2778 length = min(length, (int)sizeof(stringbuf) - 1);
2779 memcpy(stringbuf, data, length);
2780 stringbuf[length] = 0;
2783 if (developer_extra.integer)
2785 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
2786 Com_HexDumpToConsole(data, length);
2789 sendlength = sizeof(senddata) - 4;
2790 switch(Crypto_ServerParsePacket(string, length, senddata+4, &sendlength, peeraddress))
2792 case CRYPTO_NOMATCH:
2798 memcpy(senddata, "\377\377\377\377", 4);
2799 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
2802 case CRYPTO_DISCARD:
2805 memcpy(senddata, "\377\377\377\377", 4);
2806 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
2810 case CRYPTO_REPLACE:
2811 string = senddata+4;
2812 length = sendlength;
2816 if (length >= 12 && !memcmp(string, "getchallenge", 12) && (islocal || sv_public.integer > -3))
2818 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
2820 if(challenge[i].time > 0)
2821 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
2823 if (besttime > challenge[i].time)
2824 besttime = challenge[best = i].time;
2826 // if we did not find an exact match, choose the oldest and
2827 // update address and string
2828 if (i == MAX_CHALLENGES)
2831 challenge[i].address = *peeraddress;
2832 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
2834 challenge[i].time = realtime;
2835 // send the challenge
2836 dpsnprintf(response, sizeof(response), "\377\377\377\377challenge %s", challenge[i].string);
2837 response_len = strlen(response) + 1;
2838 Crypto_ServerAppendToChallenge(string, length, response, &response_len, sizeof(response));
2839 NetConn_Write(mysocket, response, response_len, peeraddress);
2842 if (length > 8 && !memcmp(string, "connect\\", 8))
2844 crypto_t *crypto = Crypto_ServerGetInstance(peeraddress);
2848 if(crypto && crypto->authenticated)
2850 // no need to check challenge
2851 if(crypto_developer.integer)
2853 Con_Printf("%s connection to %s is being established: client is %s@%.*s, I am %.*s@%.*s\n",
2854 crypto->use_aes ? "Encrypted" : "Authenticated",
2856 crypto->client_idfp[0] ? crypto->client_idfp : "-",
2857 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-",
2858 crypto_keyfp_recommended_length, crypto->server_idfp[0] ? crypto->server_idfp : "-",
2859 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-"
2865 if ((s = InfoString_GetValue(string, "challenge", infostringvalue, sizeof(infostringvalue))))
2867 // validate the challenge
2868 for (i = 0;i < MAX_CHALLENGES;i++)
2869 if(challenge[i].time > 0)
2870 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
2872 // if the challenge is not recognized, drop the packet
2873 if (i == MAX_CHALLENGES)
2878 if((s = InfoString_GetValue(string, "message", infostringvalue, sizeof(infostringvalue))))
2879 Con_DPrintf("Connecting client %s sent us the message: %s\n", addressstring2, s);
2881 if(!(islocal || sv_public.integer > -2))
2883 if (developer_extra.integer)
2884 Con_Printf("Datagram_ParseConnectionless: sending \"reject %s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
2885 NetConn_WriteString(mysocket, va(vabuf, sizeof(vabuf), "\377\377\377\377reject %s", sv_public_rejectreason.string), peeraddress);
2889 // check engine protocol
2890 if(!(s = InfoString_GetValue(string, "protocol", infostringvalue, sizeof(infostringvalue))) || strcmp(s, "darkplaces 3"))
2892 if (developer_extra.integer)
2893 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
2894 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
2898 // see if this is a duplicate connection request or a disconnected
2899 // client who is rejoining to the same client slot
2900 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2902 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2904 // this is a known client...
2905 if(crypto && crypto->authenticated)
2907 // reject if changing key!
2908 if(client->netconnection->crypto.authenticated)
2911 strcmp(client->netconnection->crypto.client_idfp, crypto->client_idfp)
2913 strcmp(client->netconnection->crypto.server_idfp, crypto->server_idfp)
2915 strcmp(client->netconnection->crypto.client_keyfp, crypto->client_keyfp)
2917 strcmp(client->netconnection->crypto.server_keyfp, crypto->server_keyfp)
2920 if (developer_extra.integer)
2921 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to change key of crypto.\" to %s.\n", addressstring2);
2922 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to change key of crypto.", peeraddress);
2929 // reject if downgrading!
2930 if(client->netconnection->crypto.authenticated)
2932 if (developer_extra.integer)
2933 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to downgrade crypto.\" to %s.\n", addressstring2);
2934 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to downgrade crypto.", peeraddress);
2938 if (client->spawned)
2940 // client crashed and is coming back,
2941 // keep their stuff intact
2942 if (developer_extra.integer)
2943 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
2944 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2945 if(crypto && crypto->authenticated)
2946 Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
2947 SV_SendServerinfo(client);
2951 // client is still trying to connect,
2952 // so we send a duplicate reply
2953 if (developer_extra.integer)
2954 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
2955 if(crypto && crypto->authenticated)
2956 Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
2957 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2963 if (NetConn_PreventConnectFlood(peeraddress))
2966 // find an empty client slot for this new client
2967 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2970 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
2972 // allocated connection
2973 if (developer_extra.integer)
2974 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
2975 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2976 // now set up the client
2977 if(crypto && crypto->authenticated)
2978 Crypto_ServerFinishInstance(&conn->crypto, crypto);
2979 SV_ConnectClient(clientnum, conn);
2980 NetConn_Heartbeat(1);
2985 // no empty slots found - server is full
2986 if (developer_extra.integer)
2987 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
2988 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
2992 if (length >= 7 && !memcmp(string, "getinfo", 7) && (islocal || sv_public.integer > -1))
2994 const char *challenge = NULL;
2996 // If there was a challenge in the getinfo message
2997 if (length > 8 && string[7] == ' ')
2998 challenge = string + 8;
3000 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
3002 if (developer_extra.integer)
3003 Con_DPrintf("Sending reply to master %s - %s\n", addressstring2, response);
3004 NetConn_WriteString(mysocket, response, peeraddress);
3008 if (length >= 9 && !memcmp(string, "getstatus", 9) && (islocal || sv_public.integer > -1))
3010 const char *challenge = NULL;
3012 // If there was a challenge in the getinfo message
3013 if (length > 10 && string[9] == ' ')
3014 challenge = string + 10;
3016 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
3018 if (developer_extra.integer)
3019 Con_DPrintf("Sending reply to client %s - %s\n", addressstring2, response);
3020 NetConn_WriteString(mysocket, response, peeraddress);
3024 if (length >= 37 && !memcmp(string, "srcon HMAC-MD4 TIME ", 20))
3026 char *password = string + 20;
3027 char *timeval = string + 37;
3028 char *s = strchr(timeval, ' ');
3029 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3030 const char *userlevel;
3032 if(rcon_secure.integer > 1)
3036 return true; // invalid packet
3039 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_time_matching, timeval, endpos - timeval - 1); // not including the appended \0 into the HMAC
3040 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3043 if (length >= 42 && !memcmp(string, "srcon HMAC-MD4 CHALLENGE ", 25))
3045 char *password = string + 25;
3046 char *challenge = string + 42;
3047 char *s = strchr(challenge, ' ');
3048 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3049 const char *userlevel;
3051 return true; // invalid packet
3054 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_challenge_matching, challenge, endpos - challenge - 1); // not including the appended \0 into the HMAC
3055 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3058 if (length >= 5 && !memcmp(string, "rcon ", 5))
3061 char *s = string + 5;
3062 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3065 if(rcon_secure.integer > 0)
3068 for (i = 0;!ISWHITESPACE(*s);s++)
3069 if (i < (int)sizeof(password) - 1)
3071 if(ISWHITESPACE(*s) && s != endpos) // skip leading ugly space
3074 if (!ISWHITESPACE(password[0]))
3076 const char *userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3077 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3081 if (!strncmp(string, "extResponse ", 12))
3083 ++sv_net_extresponse_count;
3084 if(sv_net_extresponse_count > NET_EXTRESPONSE_MAX)
3085 sv_net_extresponse_count = NET_EXTRESPONSE_MAX;
3086 sv_net_extresponse_last = (sv_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
3087 dpsnprintf(sv_net_extresponse[sv_net_extresponse_last], sizeof(sv_net_extresponse[sv_net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
3090 if (!strncmp(string, "ping", 4))
3092 if (developer_extra.integer)
3093 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
3094 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
3097 if (!strncmp(string, "ack", 3))
3099 // we may not have liked the packet, but it was a command packet, so
3100 // we're done processing this packet now
3103 // netquake control packets, supported for compatibility only, and only
3104 // when running game protocols that are normally served via this connection
3106 // (this protects more modern protocols against being used for
3107 // Quake packet flood Denial Of Service attacks)
3108 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)
3112 const char *protocolname;
3115 SZ_Clear(&sv_message);
3116 SZ_Write(&sv_message, data, length);
3117 MSG_BeginReading(&sv_message);
3118 c = MSG_ReadByte(&sv_message);
3122 if (developer_extra.integer)
3123 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
3124 if(!(islocal || sv_public.integer > -2))
3126 if (developer_extra.integer)
3127 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"%s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
3128 SZ_Clear(&sv_message);
3129 // save space for the header, filled in later
3130 MSG_WriteLong(&sv_message, 0);
3131 MSG_WriteByte(&sv_message, CCREP_REJECT);
3132 MSG_WriteString(&sv_message, va(vabuf, sizeof(vabuf), "%s\n", sv_public_rejectreason.string));
3133 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3134 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3135 SZ_Clear(&sv_message);
3139 protocolname = MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring));
3140 protocolnumber = MSG_ReadByte(&sv_message);
3141 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
3143 if (developer_extra.integer)
3144 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
3145 SZ_Clear(&sv_message);
3146 // save space for the header, filled in later
3147 MSG_WriteLong(&sv_message, 0);
3148 MSG_WriteByte(&sv_message, CCREP_REJECT);
3149 MSG_WriteString(&sv_message, "Incompatible version.\n");
3150 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3151 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3152 SZ_Clear(&sv_message);
3156 // see if this connect request comes from a known client
3157 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3159 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
3161 // this is either a duplicate connection request
3162 // or coming back from a timeout
3163 // (if so, keep their stuff intact)
3166 if (developer_extra.integer)
3167 Con_DPrintf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
3168 SZ_Clear(&sv_message);
3169 // save space for the header, filled in later
3170 MSG_WriteLong(&sv_message, 0);
3171 MSG_WriteByte(&sv_message, CCREP_ACCEPT);
3172 MSG_WriteLong(&sv_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
3173 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3174 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3175 SZ_Clear(&sv_message);
3177 // if client is already spawned, re-send the
3178 // serverinfo message as they'll need it to play
3179 if (client->spawned)
3180 SV_SendServerinfo(client);
3185 // this is a new client, check for connection flood
3186 if (NetConn_PreventConnectFlood(peeraddress))
3189 // find a slot for the new client
3190 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3193 if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
3195 // connect to the client
3196 // everything is allocated, just fill in the details
3197 strlcpy (conn->address, addressstring2, sizeof (conn->address));
3198 if (developer_extra.integer)
3199 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
3200 // send back the info about the server connection
3201 SZ_Clear(&sv_message);
3202 // save space for the header, filled in later
3203 MSG_WriteLong(&sv_message, 0);
3204 MSG_WriteByte(&sv_message, CCREP_ACCEPT);
3205 MSG_WriteLong(&sv_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
3206 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3207 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3208 SZ_Clear(&sv_message);
3209 // now set up the client struct
3210 SV_ConnectClient(clientnum, conn);
3211 NetConn_Heartbeat(1);
3216 if (developer_extra.integer)
3217 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
3218 // no room; try to let player know
3219 SZ_Clear(&sv_message);
3220 // save space for the header, filled in later
3221 MSG_WriteLong(&sv_message, 0);
3222 MSG_WriteByte(&sv_message, CCREP_REJECT);
3223 MSG_WriteString(&sv_message, "Server is full.\n");
3224 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3225 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3226 SZ_Clear(&sv_message);
3228 case CCREQ_SERVER_INFO:
3229 if (developer_extra.integer)
3230 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
3231 if(!(islocal || sv_public.integer > -1))
3233 if (sv.active && !strcmp(MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring)), "QUAKE"))
3236 char myaddressstring[128];
3237 if (developer_extra.integer)
3238 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
3239 SZ_Clear(&sv_message);
3240 // save space for the header, filled in later
3241 MSG_WriteLong(&sv_message, 0);
3242 MSG_WriteByte(&sv_message, CCREP_SERVER_INFO);
3243 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
3244 MSG_WriteString(&sv_message, myaddressstring);
3245 MSG_WriteString(&sv_message, hostname.string);
3246 MSG_WriteString(&sv_message, sv.name);
3247 // How many clients are there?
3248 for (i = 0, numclients = 0;i < svs.maxclients;i++)
3249 if (svs.clients[i].active)
3251 MSG_WriteByte(&sv_message, numclients);
3252 MSG_WriteByte(&sv_message, svs.maxclients);
3253 MSG_WriteByte(&sv_message, NET_PROTOCOL_VERSION);
3254 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3255 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3256 SZ_Clear(&sv_message);
3259 case CCREQ_PLAYER_INFO:
3260 if (developer_extra.integer)
3261 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
3262 if(!(islocal || sv_public.integer > -1))
3266 int playerNumber, activeNumber, clientNumber;
3269 playerNumber = MSG_ReadByte(&sv_message);
3271 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
3272 if (client->active && ++activeNumber == playerNumber)
3274 if (clientNumber != svs.maxclients)
3276 SZ_Clear(&sv_message);
3277 // save space for the header, filled in later
3278 MSG_WriteLong(&sv_message, 0);
3279 MSG_WriteByte(&sv_message, CCREP_PLAYER_INFO);
3280 MSG_WriteByte(&sv_message, playerNumber);
3281 MSG_WriteString(&sv_message, client->name);
3282 MSG_WriteLong(&sv_message, client->colors);
3283 MSG_WriteLong(&sv_message, client->frags);
3284 MSG_WriteLong(&sv_message, (int)(realtime - client->connecttime));
3285 if(sv_status_privacy.integer)
3286 MSG_WriteString(&sv_message, client->netconnection ? "hidden" : "botclient");
3288 MSG_WriteString(&sv_message, client->netconnection ? client->netconnection->address : "botclient");
3289 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3290 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3291 SZ_Clear(&sv_message);
3295 case CCREQ_RULE_INFO:
3296 if (developer_extra.integer)
3297 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
3298 if(!(islocal || sv_public.integer > -1))
3305 // find the search start location
3306 prevCvarName = MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring));
3307 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
3309 // send the response
3310 SZ_Clear(&sv_message);
3311 // save space for the header, filled in later
3312 MSG_WriteLong(&sv_message, 0);
3313 MSG_WriteByte(&sv_message, CCREP_RULE_INFO);
3316 MSG_WriteString(&sv_message, var->name);
3317 MSG_WriteString(&sv_message, var->string);
3319 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3320 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3321 SZ_Clear(&sv_message);
3325 if (developer_extra.integer)
3326 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RCON from %s.\n", addressstring2);
3327 if (sv.active && !rcon_secure.integer)
3329 char password[2048];
3333 const char *userlevel;
3334 strlcpy(password, MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring)), sizeof(password));
3335 strlcpy(cmd, MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring)), sizeof(cmd));
3337 endpos = cmd + strlen(cmd) + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3338 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3339 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, true);
3346 SZ_Clear(&sv_message);
3347 // we may not have liked the packet, but it was a valid control
3348 // packet, so we're done processing this packet now
3353 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
3355 SV_ReadClientMessage();
3362 void NetConn_ServerFrame(void)
3365 lhnetaddress_t peeraddress;
3366 unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
3367 for (i = 0;i < sv_numsockets;i++)
3368 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
3369 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
3370 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
3372 // never timeout loopback connections
3373 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
3375 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
3376 SV_DropClient(false);
3381 void NetConn_SleepMicroseconds(int microseconds)
3383 LHNET_SleepUntilPacket_Microseconds(microseconds);
3386 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
3390 lhnetaddress_t masteraddress;
3391 lhnetaddress_t broadcastaddress;
3394 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
3397 // 26000 is the default quake server port, servers on other ports will not
3399 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
3400 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
3404 for (i = 0;i < cl_numsockets;i++)
3408 const char *cmdname, *extraoptions;
3409 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3411 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3413 // search LAN for Quake servers
3414 SZ_Clear(&cl_message);
3415 // save space for the header, filled in later
3416 MSG_WriteLong(&cl_message, 0);
3417 MSG_WriteByte(&cl_message, CCREQ_SERVER_INFO);
3418 MSG_WriteString(&cl_message, "QUAKE");
3419 MSG_WriteByte(&cl_message, NET_PROTOCOL_VERSION);
3420 StoreBigLong(cl_message.data, NETFLAG_CTL | (cl_message.cursize & NETFLAG_LENGTH_MASK));
3421 NetConn_Write(cl_sockets[i], cl_message.data, cl_message.cursize, &broadcastaddress);
3422 SZ_Clear(&cl_message);
3424 // search LAN for DarkPlaces servers
3425 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getstatus", &broadcastaddress);
3428 // build the getservers message to send to the dpmaster master servers
3429 if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == LHNETADDRESSTYPE_INET6)
3431 cmdname = "getserversExt";
3432 extraoptions = " ipv4 ipv6"; // ask for IPv4 and IPv6 servers
3436 cmdname = "getservers";
3439 dpsnprintf(request, sizeof(request), "\377\377\377\377%s %s %u empty full%s", cmdname, gamename, NET_PROTOCOL_VERSION, extraoptions);
3442 for (masternum = 0;sv_masters[masternum].name;masternum++)
3444 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == af)
3447 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
3451 // search favorite servers
3452 for(j = 0; j < nFavorites; ++j)
3454 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3456 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3457 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, request, true );
3464 // only query QuakeWorld servers when the user wants to
3467 for (i = 0;i < cl_numsockets;i++)
3471 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3473 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3475 // search LAN for QuakeWorld servers
3476 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
3478 // build the getservers message to send to the qwmaster master servers
3479 // note this has no -1 prefix, and the trailing nul byte is sent
3480 dpsnprintf(request, sizeof(request), "c\n");
3484 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
3486 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
3488 if (m_state != m_slist)
3490 char lookupstring[128];
3491 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
3492 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
3495 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
3499 // search favorite servers
3500 for(j = 0; j < nFavorites; ++j)
3502 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3504 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3506 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &favorites[j]);
3507 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, request, true );
3514 if (!masterquerycount)
3516 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
3517 M_Update_Return_Reason("No network");
3521 void NetConn_Heartbeat(int priority)
3523 lhnetaddress_t masteraddress;
3525 lhnetsocket_t *mysocket;
3527 // if it's a state change (client connected), limit next heartbeat to no
3528 // more than 30 sec in the future
3529 if (priority == 1 && nextheartbeattime > realtime + 30.0)
3530 nextheartbeattime = realtime + 30.0;
3532 // limit heartbeatperiod to 30 to 270 second range,
3533 // lower limit is to avoid abusing master servers with excess traffic,
3534 // upper limit is to avoid timing out on the master server (which uses
3536 if (sv_heartbeatperiod.value < 30)
3537 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
3538 if (sv_heartbeatperiod.value > 270)
3539 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
3541 // make advertising optional and don't advertise singleplayer games, and
3542 // only send a heartbeat as often as the admin wants
3543 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
3545 nextheartbeattime = realtime + sv_heartbeatperiod.value;
3546 for (masternum = 0;sv_masters[masternum].name;masternum++)
3547 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
3548 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
3552 static void Net_Heartbeat_f(void)
3555 NetConn_Heartbeat(2);
3557 Con_Print("No server running, can not heartbeat to master server.\n");
3560 static void PrintStats(netconn_t *conn)
3562 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
3563 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->outgoing_unreliable_sequence, conn->qw.incoming_sequence);
3565 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
3566 Con_Printf("unreliable messages sent = %i\n", conn->unreliableMessagesSent);
3567 Con_Printf("unreliable messages recv = %i\n", conn->unreliableMessagesReceived);
3568 Con_Printf("reliable messages sent = %i\n", conn->reliableMessagesSent);
3569 Con_Printf("reliable messages received = %i\n", conn->reliableMessagesReceived);
3570 Con_Printf("packetsSent = %i\n", conn->packetsSent);
3571 Con_Printf("packetsReSent = %i\n", conn->packetsReSent);
3572 Con_Printf("packetsReceived = %i\n", conn->packetsReceived);
3573 Con_Printf("receivedDuplicateCount = %i\n", conn->receivedDuplicateCount);
3574 Con_Printf("droppedDatagrams = %i\n", conn->droppedDatagrams);
3577 void Net_Stats_f(void)
3580 Con_Print("connections =\n");
3581 for (conn = netconn_list;conn;conn = conn->next)
3585 void Net_Refresh_f(void)
3587 if (m_state != m_slist) {
3588 Con_Print("Sending new requests to master servers\n");
3589 ServerList_QueryList(false, true, false, true);
3590 Con_Print("Listening for replies...\n");
3592 ServerList_QueryList(false, true, false, false);
3595 void Net_Slist_f(void)
3597 ServerList_ResetMasks();
3598 serverlist_sortbyfield = SLIF_PING;
3599 serverlist_sortflags = 0;
3600 if (m_state != m_slist) {
3601 Con_Print("Sending requests to master servers\n");
3602 ServerList_QueryList(true, true, false, true);
3603 Con_Print("Listening for replies...\n");
3605 ServerList_QueryList(true, true, false, false);
3608 void Net_SlistQW_f(void)
3610 ServerList_ResetMasks();
3611 serverlist_sortbyfield = SLIF_PING;
3612 serverlist_sortflags = 0;
3613 if (m_state != m_slist) {
3614 Con_Print("Sending requests to master servers\n");
3615 ServerList_QueryList(true, false, true, true);
3616 serverlist_consoleoutput = true;
3617 Con_Print("Listening for replies...\n");
3619 ServerList_QueryList(true, false, true, false);
3622 void NetConn_Init(void)
3625 lhnetaddress_t tempaddress;
3626 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
3627 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
3628 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
3629 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
3630 Cmd_AddCommand("net_refresh", Net_Refresh_f, "query dp master servers and refresh all server information");
3631 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
3632 Cvar_RegisterVariable(&rcon_restricted_password);
3633 Cvar_RegisterVariable(&rcon_restricted_commands);
3634 Cvar_RegisterVariable(&rcon_secure_maxdiff);
3635 Cvar_RegisterVariable(&net_slist_queriespersecond);
3636 Cvar_RegisterVariable(&net_slist_queriesperframe);
3637 Cvar_RegisterVariable(&net_slist_timeout);
3638 Cvar_RegisterVariable(&net_slist_maxtries);
3639 Cvar_RegisterVariable(&net_slist_favorites);
3640 Cvar_RegisterVariable(&net_slist_pause);
3641 Cvar_RegisterVariable(&net_messagetimeout);
3642 Cvar_RegisterVariable(&net_connecttimeout);
3643 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
3644 Cvar_RegisterVariable(&cl_netlocalping);
3645 Cvar_RegisterVariable(&cl_netpacketloss_send);
3646 Cvar_RegisterVariable(&cl_netpacketloss_receive);
3647 Cvar_RegisterVariable(&hostname);
3648 Cvar_RegisterVariable(&developer_networking);
3649 Cvar_RegisterVariable(&cl_netport);
3650 Cvar_RegisterVariable(&sv_netport);
3651 Cvar_RegisterVariable(&net_address);
3652 Cvar_RegisterVariable(&net_address_ipv6);
3653 Cvar_RegisterVariable(&sv_public);
3654 Cvar_RegisterVariable(&sv_public_rejectreason);
3655 Cvar_RegisterVariable(&sv_heartbeatperiod);
3656 for (i = 0;sv_masters[i].name;i++)
3657 Cvar_RegisterVariable(&sv_masters[i]);
3658 Cvar_RegisterVariable(&gameversion);
3659 Cvar_RegisterVariable(&gameversion_min);
3660 Cvar_RegisterVariable(&gameversion_max);
3661 // 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.
3662 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
3664 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
3666 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
3667 Cvar_SetQuick(&net_address, com_argv[i + 1]);
3670 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
3672 // 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
3673 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
3675 i = atoi(com_argv[i + 1]);
3676 if (i >= 0 && i < 65536)
3678 Con_Printf("-port option used, setting port cvar to %i\n", i);
3679 Cvar_SetValueQuick(&sv_netport, i);
3682 Con_Printf("-port option used, but %i is not a valid port number\n", i);
3686 cl_message.data = cl_message_buf;
3687 cl_message.maxsize = sizeof(cl_message_buf);
3688 cl_message.cursize = 0;
3689 sv_message.data = sv_message_buf;
3690 sv_message.maxsize = sizeof(sv_message_buf);
3691 sv_message.cursize = 0;
3693 if (Thread_HasThreads())
3694 netconn_mutex = Thread_CreateMutex();
3697 void NetConn_Shutdown(void)
3699 NetConn_CloseClientPorts();
3700 NetConn_CloseServerPorts();
3703 Thread_DestroyMutex(netconn_mutex);
3704 netconn_mutex = NULL;