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.
26 // for secure rcon authentication
31 #define QWMASTER_PORT 27000
32 #define DPMASTER_PORT 27950
34 // note this defaults on for dedicated servers, off for listen servers
35 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"};
36 cvar_t sv_public_rejectreason = {0, "sv_public_rejectreason", "The server is closing.", "Rejection reason for connects when sv_public is -2"};
37 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 static cvar_t sv_masters [] =
41 {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
42 {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
43 {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
44 {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
45 {0, "sv_masterextra1", "69.59.212.88", "ghdigital.com - default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
46 {0, "sv_masterextra2", "64.22.107.125", "dpmaster.deathmask.net - default master server 2 (admin: Willis)"}, // admin: Willis
47 {0, "sv_masterextra3", "92.62.40.73", "dpmaster.tchr.no - default master server 3 (admin: tChr)"}, // admin: tChr
49 {0, "sv_masterextra4", "[2001:41d0:2:1628::4450]:27950", "dpmaster.div0.qc.to - default master server 4 (admin: divVerent)"}, // admin: divVerent
54 static cvar_t sv_qwmasters [] =
56 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
57 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
58 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
59 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
60 {0, "sv_qwmasterextra1", "master.quakeservers.net:27000", "Global master server. (admin: unknown)"},
61 {0, "sv_qwmasterextra2", "asgaard.morphos-team.net:27000", "Global master server. (admin: unknown)"},
62 {0, "sv_qwmasterextra3", "qwmaster.ocrana.de:27000", "German master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra4", "masterserver.exhale.de:27000", "German master server. (admin: unknown)"},
64 {0, "sv_qwmasterextra5", "kubus.rulez.pl:27000", "Poland master server. (admin: unknown)"},
68 static double nextheartbeattime = 0;
70 sizebuf_t net_message;
71 static unsigned char net_message_buf[NET_MAXMESSAGE];
73 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
74 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."};
75 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)"};
76 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
77 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
79 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)"};
80 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)"};
81 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)"};
82 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
83 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)"};
84 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
85 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"};
86 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)"};
87 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"};
88 static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific) to be sent to querying clients"};
89 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"};
90 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"};
91 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"};
92 static cvar_t rcon_restricted_commands = {0, "rcon_restricted_commands", "", "allowed commands for rcon when the restricted mode password was used"};
93 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)"};
94 extern cvar_t rcon_secure;
95 extern cvar_t rcon_secure_challengetimeout;
97 /* statistic counters */
98 static int packetsSent = 0;
99 static int packetsReSent = 0;
100 static int packetsReceived = 0;
101 static int receivedDuplicateCount = 0;
102 static int droppedDatagrams = 0;
104 static int unreliableMessagesSent = 0;
105 static int unreliableMessagesReceived = 0;
106 static int reliableMessagesSent = 0;
107 static int reliableMessagesReceived = 0;
109 double masterquerytime = -1000;
110 int masterquerycount = 0;
111 int masterreplycount = 0;
112 int serverquerycount = 0;
113 int serverreplycount = 0;
115 challenge_t challenge[MAX_CHALLENGES];
117 /// this is only false if there are still servers left to query
118 static qboolean serverlist_querysleep = true;
119 static qboolean serverlist_paused = false;
120 /// this is pushed a second or two ahead of realtime whenever a master server
121 /// reply is received, to avoid issuing queries while master replies are still
122 /// flooding in (which would make a mess of the ping times)
123 static double serverlist_querywaittime = 0;
125 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
126 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
127 static unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
128 static unsigned char cryptoreadbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
130 static int cl_numsockets;
131 static lhnetsocket_t *cl_sockets[16];
132 static int sv_numsockets;
133 static lhnetsocket_t *sv_sockets[16];
135 netconn_t *netconn_list = NULL;
136 mempool_t *netconn_mempool = NULL;
138 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
139 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
140 cvar_t net_address = {0, "net_address", "", "network address to open ipv4 ports on (if empty, use default interfaces)"};
141 cvar_t net_address_ipv6 = {0, "net_address_ipv6", "", "network address to open ipv6 ports on (if empty, use default interfaces)"};
143 char cl_net_extresponse[NET_EXTRESPONSE_MAX][1400];
144 int cl_net_extresponse_count = 0;
145 int cl_net_extresponse_last = 0;
147 char sv_net_extresponse[NET_EXTRESPONSE_MAX][1400];
148 int sv_net_extresponse_count = 0;
149 int sv_net_extresponse_last = 0;
151 // ServerList interface
152 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
153 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
155 serverlist_infofield_t serverlist_sortbyfield;
156 int serverlist_sortflags;
158 int serverlist_viewcount = 0;
159 unsigned short serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
161 int serverlist_maxcachecount = 0;
162 int serverlist_cachecount = 0;
163 serverlist_entry_t *serverlist_cache = NULL;
165 qboolean serverlist_consoleoutput;
167 static int nFavorites = 0;
168 static lhnetaddress_t favorites[MAX_FAVORITESERVERS];
169 static int nFavorites_idfp = 0;
170 static char favorites_idfp[MAX_FAVORITESERVERS][FP64_SIZE+1];
172 void NetConn_UpdateFavorites(void)
177 p = net_slist_favorites.string;
178 while((size_t) nFavorites < sizeof(favorites) / sizeof(*favorites) && COM_ParseToken_Console(&p))
180 if(com_token[0] != '[' && strlen(com_token) == FP64_SIZE && !strchr(com_token, '.'))
181 // currently 44 bytes, longest possible IPv6 address: 39 bytes, so this works
182 // (if v6 address contains port, it must start with '[')
184 strlcpy(favorites_idfp[nFavorites_idfp], com_token, sizeof(favorites_idfp[nFavorites_idfp]));
189 if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000))
195 /// helper function to insert a value into the viewset
196 /// spare entries will be removed
197 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
200 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
201 i = serverlist_viewcount++;
203 i = SERVERLIST_VIEWLISTSIZE - 1;
206 for( ; i > index ; i-- )
207 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
209 serverlist_viewlist[index] = (int)(entry - serverlist_cache);
212 /// we suppose serverlist_viewcount to be valid, ie > 0
213 static void _ServerList_ViewList_Helper_Remove( int index )
215 serverlist_viewcount--;
216 for( ; index < serverlist_viewcount ; index++ )
217 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
220 /// \returns true if A should be inserted before B
221 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
223 int result = 0; // > 0 if for numbers A > B and for text if A < B
225 if( serverlist_sortflags & SLSF_FAVORITESFIRST )
227 if(A->info.isfavorite != B->info.isfavorite)
228 return A->info.isfavorite;
231 switch( serverlist_sortbyfield ) {
233 result = A->info.ping - B->info.ping;
235 case SLIF_MAXPLAYERS:
236 result = A->info.maxplayers - B->info.maxplayers;
238 case SLIF_NUMPLAYERS:
239 result = A->info.numplayers - B->info.numplayers;
242 result = A->info.numbots - B->info.numbots;
245 result = A->info.numhumans - B->info.numhumans;
248 result = A->info.freeslots - B->info.freeslots;
251 result = A->info.protocol - B->info.protocol;
254 result = strcmp( B->info.cname, A->info.cname );
257 result = strcasecmp( B->info.game, A->info.game );
260 result = strcasecmp( B->info.map, A->info.map );
263 result = strcasecmp( B->info.mod, A->info.mod );
266 result = strcasecmp( B->info.name, A->info.name );
269 result = strcasecmp( B->info.qcstatus, A->info.qcstatus ); // not really THAT useful, though
271 case SLIF_ISFAVORITE:
272 result = !!B->info.isfavorite - !!A->info.isfavorite;
275 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
281 if( serverlist_sortflags & SLSF_DESCENDING )
287 // if the chosen sort key is identical, sort by index
288 // (makes this a stable sort, so that later replies from servers won't
289 // shuffle the servers around when they have the same ping)
293 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
295 // This should actually be done with some intermediate and end-of-function return
307 case SLMO_GREATEREQUAL:
309 case SLMO_NOTCONTAIN:
310 case SLMO_STARTSWITH:
311 case SLMO_NOTSTARTSWITH:
314 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
319 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
322 char bufferA[ 1400 ], bufferB[ 1400 ]; // should be more than enough
323 COM_StringDecolorize(A, 0, bufferA, sizeof(bufferA), false);
324 for (i = 0;i < (int)sizeof(bufferA)-1 && bufferA[i];i++)
325 bufferA[i] = (bufferA[i] >= 'A' && bufferA[i] <= 'Z') ? (bufferA[i] + 'a' - 'A') : bufferA[i];
327 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
328 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
331 // Same here, also using an intermediate & final return would be more appropriate
335 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
336 case SLMO_NOTCONTAIN:
337 return !*bufferB || !strstr( bufferA, bufferB );
338 case SLMO_STARTSWITH:
339 //Con_Printf("startsWith: %s %s\n", bufferA, bufferB);
340 return *bufferB && !memcmp(bufferA, bufferB, strlen(bufferB));
341 case SLMO_NOTSTARTSWITH:
342 return !*bufferB || memcmp(bufferA, bufferB, strlen(bufferB));
344 return strcmp( bufferA, bufferB ) < 0;
346 return strcmp( bufferA, bufferB ) <= 0;
348 return strcmp( bufferA, bufferB ) == 0;
350 return strcmp( bufferA, bufferB ) > 0;
352 return strcmp( bufferA, bufferB ) != 0;
353 case SLMO_GREATEREQUAL:
354 return strcmp( bufferA, bufferB ) >= 0;
356 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
361 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
363 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
365 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
367 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
369 if( !_ServerList_CompareInt( info->numbots, mask->tests[SLIF_NUMBOTS], mask->info.numbots ) )
371 if( !_ServerList_CompareInt( info->numhumans, mask->tests[SLIF_NUMHUMANS], mask->info.numhumans ) )
373 if( !_ServerList_CompareInt( info->freeslots, mask->tests[SLIF_FREESLOTS], mask->info.freeslots ) )
375 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
377 if( *mask->info.cname
378 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
381 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
384 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
387 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
390 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
392 if( *mask->info.qcstatus
393 && !_ServerList_CompareStr( info->qcstatus, mask->tests[SLIF_QCSTATUS], mask->info.qcstatus ) )
395 if( *mask->info.players
396 && !_ServerList_CompareStr( info->players, mask->tests[SLIF_PLAYERS], mask->info.players ) )
398 if( !_ServerList_CompareInt( info->isfavorite, mask->tests[SLIF_ISFAVORITE], mask->info.isfavorite ))
403 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
405 int start, end, mid, i;
408 // reject incompatible servers
410 entry->info.gameversion != gameversion.integer
413 gameversion_min.integer >= 0 // min/max range set by user/mod?
414 && gameversion_max.integer >= 0
415 && gameversion_min.integer >= entry->info.gameversion // version of server in min/max range?
416 && gameversion_max.integer <= entry->info.gameversion
421 // refresh the "favorite" status
422 entry->info.isfavorite = false;
423 if(LHNETADDRESS_FromString(&addr, entry->info.cname, 26000))
425 char idfp[FP64_SIZE+1];
426 for(i = 0; i < nFavorites; ++i)
428 if(LHNETADDRESS_Compare(&addr, &favorites[i]) == 0)
430 entry->info.isfavorite = true;
434 if(Crypto_RetrieveHostKey(&addr, 0, NULL, 0, idfp, sizeof(idfp), NULL))
436 for(i = 0; i < nFavorites_idfp; ++i)
438 if(!strcmp(idfp, favorites_idfp[i]))
440 entry->info.isfavorite = true;
447 // FIXME: change this to be more readable (...)
448 // now check whether it passes through the masks
449 for( start = 0 ; start < SERVERLIST_ANDMASKCOUNT && serverlist_andmasks[start].active; start++ )
450 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
453 for( start = 0 ; start < SERVERLIST_ORMASKCOUNT && serverlist_ormasks[start].active ; start++ )
454 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
456 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
459 if( !serverlist_viewcount ) {
460 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
463 // ok, insert it, we just need to find out where exactly:
466 // check whether to insert it as new first item
467 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(0) ) ) {
468 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
470 } // check whether to insert it as new last item
471 else if( !_ServerList_Entry_Compare( entry, ServerList_GetViewEntry(serverlist_viewcount - 1) ) ) {
472 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
476 end = serverlist_viewcount - 1;
477 while( end > start + 1 )
479 mid = (start + end) / 2;
480 // test the item that lies in the middle between start and end
481 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(mid) ) )
482 // the item has to be in the upper half
485 // the item has to be in the lower half
488 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
491 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
494 for( i = 0; i < serverlist_viewcount; i++ )
496 if (ServerList_GetViewEntry(i) == entry)
498 _ServerList_ViewList_Helper_Remove(i);
504 void ServerList_RebuildViewList(void)
508 serverlist_viewcount = 0;
509 for( i = 0 ; i < serverlist_cachecount ; i++ ) {
510 serverlist_entry_t *entry = &serverlist_cache[i];
511 // also display entries that are currently being refreshed [11/8/2007 Black]
512 if( entry->query == SQS_QUERIED || entry->query == SQS_REFRESHING )
513 ServerList_ViewList_Insert( entry );
517 void ServerList_ResetMasks(void)
521 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
522 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
523 // numbots needs to be compared to -1 to always succeed
524 for(i = 0; i < SERVERLIST_ANDMASKCOUNT; ++i)
525 serverlist_andmasks[i].info.numbots = -1;
526 for(i = 0; i < SERVERLIST_ORMASKCOUNT; ++i)
527 serverlist_ormasks[i].info.numbots = -1;
530 void ServerList_GetPlayerStatistics(int *numplayerspointer, int *maxplayerspointer)
533 int numplayers = 0, maxplayers = 0;
534 for (i = 0;i < serverlist_cachecount;i++)
536 if (serverlist_cache[i].query == SQS_QUERIED)
538 numplayers += serverlist_cache[i].info.numhumans;
539 maxplayers += serverlist_cache[i].info.maxplayers;
542 *numplayerspointer = numplayers;
543 *maxplayerspointer = maxplayers;
547 static void _ServerList_Test(void)
550 if (serverlist_maxcachecount <= 1024)
552 serverlist_maxcachecount = 1024;
553 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
555 for( i = 0 ; i < 1024 ; i++ ) {
556 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
557 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
558 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
559 serverlist_cache[serverlist_cachecount].finished = true;
560 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 );
561 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
562 serverlist_cachecount++;
567 void ServerList_QueryList(qboolean resetcache, qboolean querydp, qboolean queryqw, qboolean consoleoutput)
569 masterquerytime = realtime;
570 masterquerycount = 0;
571 masterreplycount = 0;
573 serverquerycount = 0;
574 serverreplycount = 0;
575 serverlist_cachecount = 0;
576 serverlist_viewcount = 0;
577 serverlist_maxcachecount = 0;
578 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
580 // refresh all entries
582 for( n = 0 ; n < serverlist_cachecount ; n++ ) {
583 serverlist_entry_t *entry = &serverlist_cache[ n ];
584 entry->query = SQS_REFRESHING;
585 entry->querycounter = 0;
588 serverlist_consoleoutput = consoleoutput;
590 //_ServerList_Test();
592 NetConn_QueryMasters(querydp, queryqw);
597 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
599 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
603 if (cl_netpacketloss_receive.integer)
604 for (i = 0;i < cl_numsockets;i++)
605 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_receive.integer)
607 if (developer_networking.integer)
609 char addressstring[128], addressstring2[128];
610 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
613 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
614 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length, addressstring2);
615 Com_HexDumpToConsole((unsigned char *)data, length);
618 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length);
623 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
627 if (cl_netpacketloss_send.integer)
628 for (i = 0;i < cl_numsockets;i++)
629 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_send.integer)
631 ret = LHNET_Write(mysocket, data, length, peeraddress);
632 if (developer_networking.integer)
634 char addressstring[128], addressstring2[128];
635 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
636 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
637 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)");
638 Com_HexDumpToConsole((unsigned char *)data, length);
643 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
645 // note this does not include the trailing NULL because we add that in the parser
646 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
649 qboolean NetConn_CanSend(netconn_t *conn)
651 conn->outgoing_packetcounter = (conn->outgoing_packetcounter + 1) % NETGRAPH_PACKETS;
652 conn->outgoing_netgraph[conn->outgoing_packetcounter].time = realtime;
653 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
654 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
655 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes = NETGRAPH_NOPACKET;
656 if (realtime > conn->cleartime)
660 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_CHOKEDPACKET;
665 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol, int rate, qboolean quakesignon_suppressreliables)
669 // if this packet was supposedly choked, but we find ourselves sending one
670 // anyway, make sure the size counting starts at zero
671 // (this mostly happens on level changes and disconnects and such)
672 if (conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes == NETGRAPH_CHOKEDPACKET)
673 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
675 if (protocol == PROTOCOL_QUAKEWORLD)
678 qboolean sendreliable;
680 // note that it is ok to send empty messages to the qw server,
681 // otherwise it won't respond to us at all
683 sendreliable = false;
684 // if the remote side dropped the last reliable message, resend it
685 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
687 // if the reliable transmit buffer is empty, copy the current message out
688 if (!conn->sendMessageLength && conn->message.cursize)
690 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
691 conn->sendMessageLength = conn->message.cursize;
692 SZ_Clear(&conn->message); // clear the message buffer
693 conn->qw.reliable_sequence ^= 1;
696 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
697 StoreLittleLong(sendbuffer, (unsigned int)conn->outgoing_unreliable_sequence | ((unsigned int)sendreliable<<31));
698 // last received unreliable packet number, and last received reliable packet number (0 or 1)
699 StoreLittleLong(sendbuffer + 4, (unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
701 conn->outgoing_unreliable_sequence++;
702 // client sends qport in every packet
703 if (conn == cls.netcon)
705 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
707 // also update cls.qw_outgoing_sequence
708 cls.qw_outgoing_sequence = conn->outgoing_unreliable_sequence;
710 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
712 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
716 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
718 // add the reliable message if there is one
721 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += conn->sendMessageLength + 28;
722 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
723 packetLen += conn->sendMessageLength;
724 conn->qw.last_reliable_sequence = conn->outgoing_unreliable_sequence;
727 // add the unreliable message if possible
728 if (packetLen + data->cursize <= 1400)
730 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += data->cursize + 28;
731 memcpy(sendbuffer + packetLen, data->data, data->cursize);
732 packetLen += data->cursize;
735 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
738 unreliableMessagesSent++;
740 totallen += packetLen + 28;
744 unsigned int packetLen;
745 unsigned int dataLen;
750 // if a reliable message fragment has been lost, send it again
751 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
753 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
755 dataLen = conn->sendMessageLength;
760 dataLen = MAX_PACKETFRAGMENT;
764 packetLen = NET_HEADERSIZE + dataLen;
766 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
767 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence - 1);
768 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
770 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
772 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
773 if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
775 conn->lastSendTime = realtime;
779 totallen += sendmelen + 28;
782 // if we have a new reliable message to send, do so
783 if (!conn->sendMessageLength && conn->message.cursize && !quakesignon_suppressreliables)
785 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
787 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
788 conn->message.overflowed = true;
792 if (developer_networking.integer && conn == cls.netcon)
794 Con_Print("client sending reliable message to server:\n");
795 SZ_HexDumpToConsole(&conn->message);
798 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
799 conn->sendMessageLength = conn->message.cursize;
800 SZ_Clear(&conn->message);
802 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
804 dataLen = conn->sendMessageLength;
809 dataLen = MAX_PACKETFRAGMENT;
813 packetLen = NET_HEADERSIZE + dataLen;
815 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
816 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
817 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
819 conn->nq.sendSequence++;
821 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
823 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
825 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
827 conn->lastSendTime = realtime;
829 reliableMessagesSent++;
831 totallen += sendmelen + 28;
834 // if we have an unreliable message to send, do so
837 packetLen = NET_HEADERSIZE + data->cursize;
839 if (packetLen > (int)sizeof(sendbuffer))
841 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
845 StoreBigLong(sendbuffer, packetLen | NETFLAG_UNRELIABLE);
846 StoreBigLong(sendbuffer + 4, conn->outgoing_unreliable_sequence);
847 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
849 conn->outgoing_unreliable_sequence++;
851 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
853 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
855 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
858 unreliableMessagesSent++;
860 totallen += sendmelen + 28;
864 // delay later packets to obey rate limit
865 if (conn->cleartime < realtime - 0.1)
866 conn->cleartime = realtime - 0.1;
867 conn->cleartime = conn->cleartime + (double)totallen / (double)rate;
868 if (conn->cleartime < realtime)
869 conn->cleartime = realtime;
874 qboolean NetConn_HaveClientPorts(void)
876 return !!cl_numsockets;
879 qboolean NetConn_HaveServerPorts(void)
881 return !!sv_numsockets;
884 void NetConn_CloseClientPorts(void)
886 for (;cl_numsockets > 0;cl_numsockets--)
887 if (cl_sockets[cl_numsockets - 1])
888 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
891 void NetConn_OpenClientPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport)
893 lhnetaddress_t address;
896 char addressstring2[1024];
897 if (addressstring && addressstring[0])
898 success = LHNETADDRESS_FromString(&address, addressstring, defaultport);
900 success = LHNETADDRESS_FromPort(&address, addresstype, defaultport);
903 if ((s = LHNET_OpenSocket_Connectionless(&address)))
905 cl_sockets[cl_numsockets++] = s;
906 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
907 if (addresstype != LHNETADDRESSTYPE_LOOP)
908 Con_Printf("Client opened a socket on address %s\n", addressstring2);
912 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
913 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
917 Con_Printf("Client unable to parse address %s\n", addressstring);
920 void NetConn_OpenClientPorts(void)
923 NetConn_CloseClientPorts();
924 port = bound(0, cl_netport.integer, 65535);
925 if (cl_netport.integer != port)
926 Cvar_SetValueQuick(&cl_netport, port);
928 Con_Printf("Client using an automatically assigned port\n");
930 Con_Printf("Client using port %i\n", port);
931 NetConn_OpenClientPort(NULL, LHNETADDRESSTYPE_LOOP, 2);
932 NetConn_OpenClientPort(net_address.string, LHNETADDRESSTYPE_INET4, port);
934 NetConn_OpenClientPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port);
938 void NetConn_CloseServerPorts(void)
940 for (;sv_numsockets > 0;sv_numsockets--)
941 if (sv_sockets[sv_numsockets - 1])
942 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
945 qboolean NetConn_OpenServerPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport, int range)
947 lhnetaddress_t address;
950 char addressstring2[1024];
953 for (port = defaultport; port <= defaultport + range; port++)
955 if (addressstring && addressstring[0])
956 success = LHNETADDRESS_FromString(&address, addressstring, port);
958 success = LHNETADDRESS_FromPort(&address, addresstype, port);
961 if ((s = LHNET_OpenSocket_Connectionless(&address)))
963 sv_sockets[sv_numsockets++] = s;
964 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
965 if (addresstype != LHNETADDRESSTYPE_LOOP)
966 Con_Printf("Server listening on address %s\n", addressstring2);
971 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
972 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
977 Con_Printf("Server unable to parse address %s\n", addressstring);
978 // if it cant parse one address, it wont be able to parse another for sure
985 void NetConn_OpenServerPorts(int opennetports)
988 NetConn_CloseServerPorts();
989 NetConn_UpdateSockets();
990 port = bound(0, sv_netport.integer, 65535);
993 Con_Printf("Server using port %i\n", port);
994 if (sv_netport.integer != port)
995 Cvar_SetValueQuick(&sv_netport, port);
996 if (cls.state != ca_dedicated)
997 NetConn_OpenServerPort(NULL, LHNETADDRESSTYPE_LOOP, 1, 1);
1001 qboolean ip4success = NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1002 NetConn_OpenServerPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port, ip4success ? 1 : 100);
1004 NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1007 if (sv_numsockets == 0)
1008 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
1011 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
1013 int i, a = LHNETADDRESS_GetAddressType(address);
1014 for (i = 0;i < cl_numsockets;i++)
1015 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
1016 return cl_sockets[i];
1020 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
1022 int i, a = LHNETADDRESS_GetAddressType(address);
1023 for (i = 0;i < sv_numsockets;i++)
1024 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
1025 return sv_sockets[i];
1029 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
1032 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
1033 conn->mysocket = mysocket;
1034 conn->peeraddress = *peeraddress;
1035 conn->lastMessageTime = realtime;
1036 conn->message.data = conn->messagedata;
1037 conn->message.maxsize = sizeof(conn->messagedata);
1038 conn->message.cursize = 0;
1039 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
1040 // reduce effectiveness of connection request floods
1041 conn->timeout = realtime + net_connecttimeout.value;
1042 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
1043 conn->next = netconn_list;
1044 netconn_list = conn;
1048 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
1049 void NetConn_Close(netconn_t *conn)
1052 // remove connection from list
1054 // allow the client to reconnect immediately
1055 NetConn_ClearConnectFlood(&(conn->peeraddress));
1057 if (conn == netconn_list)
1058 netconn_list = conn->next;
1061 for (c = netconn_list;c;c = c->next)
1063 if (c->next == conn)
1065 c->next = conn->next;
1069 // not found in list, we'll avoid crashing here...
1077 static int clientport = -1;
1078 static int clientport2 = -1;
1079 static int hostport = -1;
1080 void NetConn_UpdateSockets(void)
1084 if (cls.state != ca_dedicated)
1086 if (clientport2 != cl_netport.integer)
1088 clientport2 = cl_netport.integer;
1089 if (cls.state == ca_connected)
1090 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
1092 if (cls.state == ca_disconnected && clientport != clientport2)
1094 clientport = clientport2;
1095 NetConn_CloseClientPorts();
1097 if (cl_numsockets == 0)
1098 NetConn_OpenClientPorts();
1101 if (hostport != sv_netport.integer)
1103 hostport = sv_netport.integer;
1105 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
1108 for (j = 0;j < MAX_RCONS;j++)
1110 i = (cls.rcon_ringpos + j + 1) % MAX_RCONS;
1111 if(cls.rcon_commands[i][0])
1113 if(realtime > cls.rcon_timeout[i])
1116 LHNETADDRESS_ToString(&cls.rcon_addresses[i], s, sizeof(s), true);
1117 Con_Printf("rcon to %s (for command %s) failed: challenge request timed out\n", s, cls.rcon_commands[i]);
1118 cls.rcon_commands[i][0] = 0;
1126 static int NetConn_ReceivedMessage(netconn_t *conn, const unsigned char *data, size_t length, protocolversion_t protocol, double newtimeout)
1128 int originallength = length;
1132 if (protocol == PROTOCOL_QUAKEWORLD)
1134 int sequence, sequence_ack;
1135 int reliable_ack, reliable_message;
1139 sequence = LittleLong(*((int *)(data + 0)));
1140 sequence_ack = LittleLong(*((int *)(data + 4)));
1144 if (conn != cls.netcon)
1149 // 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?)
1150 //qport = LittleShort(*((int *)(data + 8)));
1156 reliable_message = (sequence >> 31) & 1;
1157 reliable_ack = (sequence_ack >> 31) & 1;
1158 sequence &= ~(1<<31);
1159 sequence_ack &= ~(1<<31);
1160 if (sequence <= conn->qw.incoming_sequence)
1162 //Con_DPrint("Got a stale datagram\n");
1165 count = sequence - (conn->qw.incoming_sequence + 1);
1168 droppedDatagrams += count;
1169 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1172 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1173 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1174 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1175 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1176 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1179 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1180 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1181 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1182 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1183 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1184 if (reliable_ack == conn->qw.reliable_sequence)
1186 // received, now we will be able to send another reliable message
1187 conn->sendMessageLength = 0;
1188 reliableMessagesReceived++;
1190 conn->qw.incoming_sequence = sequence;
1191 if (conn == cls.netcon)
1192 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
1193 conn->qw.incoming_acknowledged = sequence_ack;
1194 conn->qw.incoming_reliable_acknowledged = reliable_ack;
1195 if (reliable_message)
1196 conn->qw.incoming_reliable_sequence ^= 1;
1197 conn->lastMessageTime = realtime;
1198 conn->timeout = realtime + newtimeout;
1199 unreliableMessagesReceived++;
1200 SZ_Clear(&net_message);
1201 SZ_Write(&net_message, data, length);
1209 unsigned int sequence;
1214 originallength = length;
1215 data = (const unsigned char *) Crypto_DecryptPacket(&conn->crypto, data, length, cryptoreadbuffer, &length, sizeof(cryptoreadbuffer));
1221 qlength = (unsigned int)BuffBigLong(data);
1222 flags = qlength & ~NETFLAG_LENGTH_MASK;
1223 qlength &= NETFLAG_LENGTH_MASK;
1224 // control packets were already handled
1225 if (!(flags & NETFLAG_CTL) && qlength == length)
1227 sequence = BuffBigLong(data + 4);
1231 if (flags & NETFLAG_UNRELIABLE)
1233 if (sequence >= conn->nq.unreliableReceiveSequence)
1235 if (sequence > conn->nq.unreliableReceiveSequence)
1237 count = sequence - conn->nq.unreliableReceiveSequence;
1238 droppedDatagrams += count;
1239 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1242 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1243 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1244 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1245 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1246 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1249 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1250 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1251 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1252 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1253 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1254 conn->nq.unreliableReceiveSequence = sequence + 1;
1255 conn->lastMessageTime = realtime;
1256 conn->timeout = realtime + newtimeout;
1257 unreliableMessagesReceived++;
1260 SZ_Clear(&net_message);
1261 SZ_Write(&net_message, data, length);
1267 // Con_DPrint("Got a stale datagram\n");
1270 else if (flags & NETFLAG_ACK)
1272 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes += originallength + 28;
1273 if (sequence == (conn->nq.sendSequence - 1))
1275 if (sequence == conn->nq.ackSequence)
1277 conn->nq.ackSequence++;
1278 if (conn->nq.ackSequence != conn->nq.sendSequence)
1279 Con_DPrint("ack sequencing error\n");
1280 conn->lastMessageTime = realtime;
1281 conn->timeout = realtime + newtimeout;
1282 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
1284 unsigned int packetLen;
1285 unsigned int dataLen;
1288 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
1289 memmove(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
1291 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
1293 dataLen = conn->sendMessageLength;
1298 dataLen = MAX_PACKETFRAGMENT;
1302 packetLen = NET_HEADERSIZE + dataLen;
1304 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
1305 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
1306 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1308 conn->nq.sendSequence++;
1310 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1311 if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
1313 conn->lastSendTime = realtime;
1318 conn->sendMessageLength = 0;
1321 // Con_DPrint("Duplicate ACK received\n");
1324 // Con_DPrint("Stale ACK received\n");
1327 else if (flags & NETFLAG_DATA)
1329 unsigned char temppacket[8];
1330 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes += originallength + 28;
1331 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes += 8 + 28;
1332 StoreBigLong(temppacket, 8 | NETFLAG_ACK);
1333 StoreBigLong(temppacket + 4, sequence);
1334 sendme = Crypto_EncryptPacket(&conn->crypto, temppacket, 8, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1336 NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
1337 if (sequence == conn->nq.receiveSequence)
1339 conn->lastMessageTime = realtime;
1340 conn->timeout = realtime + newtimeout;
1341 conn->nq.receiveSequence++;
1342 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1343 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1344 conn->receiveMessageLength += length;
1346 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1347 "Dropping the message!\n", sequence );
1348 conn->receiveMessageLength = 0;
1351 if (flags & NETFLAG_EOM)
1353 reliableMessagesReceived++;
1354 length = conn->receiveMessageLength;
1355 conn->receiveMessageLength = 0;
1358 SZ_Clear(&net_message);
1359 SZ_Write(&net_message, conn->receiveMessage, length);
1366 receivedDuplicateCount++;
1374 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1377 cls.connect_trying = false;
1378 M_Update_Return_Reason("");
1379 // the connection request succeeded, stop current connection and set up a new connection
1381 // if we're connecting to a remote server, shut down any local server
1382 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1383 Host_ShutdownServer ();
1384 // allocate a net connection to keep track of things
1385 cls.netcon = NetConn_Open(mysocket, peeraddress);
1386 crypto = &cls.crypto;
1387 if(crypto && crypto->authenticated)
1389 Crypto_ServerFinishInstance(&cls.netcon->crypto, crypto);
1390 Con_Printf("%s connection to %s has been established: server is %s@%.*s, I am %.*s@%.*s\n",
1391 crypto->use_aes ? "Encrypted" : "Authenticated",
1392 cls.netcon->address,
1393 crypto->server_idfp[0] ? crypto->server_idfp : "-",
1394 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-",
1395 crypto_keyfp_recommended_length, crypto->client_idfp[0] ? crypto->client_idfp : "-",
1396 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-"
1399 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1400 key_dest = key_game;
1402 cls.demonum = -1; // not in the demo loop now
1403 cls.state = ca_connected;
1404 cls.signon = 0; // need all the signon messages before playing
1405 cls.protocol = initialprotocol;
1406 // reset move sequence numbering on this new connection
1407 cls.servermovesequence = 0;
1408 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1409 Cmd_ForwardStringToServer("new");
1410 if (cls.protocol == PROTOCOL_QUAKE)
1412 // write a keepalive (clc_nop) as it seems to greatly improve the
1413 // chances of connecting to a netquake server
1415 unsigned char buf[4];
1416 memset(&msg, 0, sizeof(msg));
1418 msg.maxsize = sizeof(buf);
1419 MSG_WriteChar(&msg, clc_nop);
1420 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000, false);
1424 int NetConn_IsLocalGame(void)
1426 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1431 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1435 serverlist_entry_t *entry = NULL;
1437 // search the cache for this server and update it
1438 for (n = 0;n < serverlist_cachecount;n++) {
1439 entry = &serverlist_cache[ n ];
1440 if (!strcmp(addressstring, entry->info.cname))
1444 if (n == serverlist_cachecount)
1446 // LAN search doesnt require an answer from the master server so we wont
1447 // know the ping nor will it be initialized already...
1450 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1453 if (serverlist_maxcachecount <= serverlist_cachecount)
1455 serverlist_maxcachecount += 64;
1456 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1458 entry = &serverlist_cache[n];
1460 memset(entry, 0, sizeof(*entry));
1461 // store the data the engine cares about (address and ping)
1462 strlcpy(entry->info.cname, addressstring, sizeof(entry->info.cname));
1463 entry->info.ping = 100000;
1464 entry->querytime = realtime;
1465 // if not in the slist menu we should print the server to console
1466 if (serverlist_consoleoutput)
1467 Con_Printf("querying %s\n", addressstring);
1468 ++serverlist_cachecount;
1470 // if this is the first reply from this server, count it as having replied
1471 pingtime = (int)((realtime - entry->querytime) * 1000.0 + 0.5);
1472 pingtime = bound(0, pingtime, 9999);
1473 if (entry->query == SQS_REFRESHING) {
1474 entry->info.ping = pingtime;
1475 entry->query = SQS_QUERIED;
1477 // convert to unsigned to catch the -1
1478 // 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]
1479 entry->info.ping = min((unsigned) entry->info.ping, (unsigned) pingtime);
1483 // other server info is updated by the caller
1487 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1489 serverlist_entry_t *entry = &serverlist_cache[n];
1490 serverlist_info_t *info = &entry->info;
1491 // update description strings for engine menu and console output
1492 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);
1493 dpsnprintf(entry->line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game,
1495 info->gameversion != gameversion.integer
1498 gameversion_min.integer >= 0 // min/max range set by user/mod?
1499 && gameversion_max.integer >= 0
1500 && gameversion_min.integer >= info->gameversion // version of server in min/max range?
1501 && gameversion_max.integer <= info->gameversion
1504 info->mod, info->map);
1505 if (entry->query == SQS_QUERIED)
1507 if(!serverlist_paused)
1508 ServerList_ViewList_Remove(entry);
1510 // if not in the slist menu we should print the server to console (if wanted)
1511 else if( serverlist_consoleoutput )
1512 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1513 // and finally, update the view set
1514 if(!serverlist_paused)
1515 ServerList_ViewList_Insert( entry );
1516 // update the entry's state
1517 serverlist_cache[n].query = SQS_QUERIED;
1520 // returns true, if it's sensible to continue the processing
1521 static qboolean NetConn_ClientParsePacket_ServerList_PrepareQuery( int protocol, const char *ipstring, qboolean isfavorite ) {
1523 serverlist_entry_t *entry;
1525 // ignore the rest of the message if the serverlist is full
1526 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1528 // also ignore it if we have already queried it (other master server response)
1529 for( n = 0 ; n < serverlist_cachecount ; n++ )
1530 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1533 if( n < serverlist_cachecount ) {
1534 // the entry has already been queried once or
1538 if (serverlist_maxcachecount <= n)
1540 serverlist_maxcachecount += 64;
1541 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1544 entry = &serverlist_cache[n];
1546 memset(entry, 0, sizeof(entry));
1547 entry->protocol = protocol;
1548 // store the data the engine cares about (address and ping)
1549 strlcpy (entry->info.cname, ipstring, sizeof(entry->info.cname));
1551 entry->info.isfavorite = isfavorite;
1553 // no, then reset the ping right away
1554 entry->info.ping = -1;
1555 // we also want to increase the serverlist_cachecount then
1556 serverlist_cachecount++;
1559 entry->query = SQS_QUERYING;
1564 static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *senderaddress, const unsigned char *data, int length, qboolean isextended)
1567 if (serverlist_consoleoutput)
1568 Con_Printf("received DarkPlaces %sserver list...\n", isextended ? "extended " : "");
1571 char ipstring [128];
1574 if (data[0] == '\\')
1576 unsigned short port = data[5] * 256 + data[6];
1578 if (port != 0 && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF))
1579 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%hu", data[1], data[2], data[3], data[4], port);
1581 // move on to next address in packet
1586 else if (data[0] == '/' && isextended && length >= 19)
1588 unsigned short port = data[17] * 256 + data[18];
1595 /// \TODO: make some basic checks of the IP address (broadcast, ...)
1597 ifname = LHNETADDRESS_GetInterfaceName(senderaddress);
1600 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x%%%s]:%hu",
1601 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1602 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1608 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x]:%hu",
1609 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1610 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1615 // move on to next address in packet
1621 Con_Print("Error while parsing the server list\n");
1625 if (serverlist_consoleoutput && developer_networking.integer)
1626 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1628 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, ipstring, false ) ) {
1634 // begin or resume serverlist queries
1635 serverlist_querysleep = false;
1636 serverlist_querywaittime = realtime + 3;
1639 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1641 qboolean fromserver;
1642 int ret, c, control;
1644 char *string, addressstring2[128], ipstring[32];
1645 char stringbuf[16384];
1646 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1649 // quakeworld ingame packet
1650 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1652 // convert the address to a string incase we need it
1653 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1655 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1657 // received a command string - strip off the packaging and put it
1658 // into our string buffer with NULL termination
1661 length = min(length, (int)sizeof(stringbuf) - 1);
1662 memcpy(stringbuf, data, length);
1663 stringbuf[length] = 0;
1666 if (developer_networking.integer)
1668 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1669 Com_HexDumpToConsole(data, length);
1672 sendlength = sizeof(senddata) - 4;
1673 switch(Crypto_ClientParsePacket(string, length, senddata+4, &sendlength, peeraddress))
1675 case CRYPTO_NOMATCH:
1681 memcpy(senddata, "\377\377\377\377", 4);
1682 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
1685 case CRYPTO_DISCARD:
1688 memcpy(senddata, "\377\377\377\377", 4);
1689 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
1693 case CRYPTO_REPLACE:
1694 string = senddata+4;
1695 length = sendlength;
1699 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying)
1702 for (j = 0;j < MAX_RCONS;j++)
1704 // note: this value from i is used outside the loop too...
1705 i = (cls.rcon_ringpos + j) % MAX_RCONS;
1706 if(cls.rcon_commands[i][0])
1707 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[i]))
1716 dpsnprintf(argbuf, sizeof(argbuf), "%s %s", string + 10, cls.rcon_commands[i]);
1717 memcpy(buf, "\377\377\377\377srcon HMAC-MD4 CHALLENGE ", 29);
1719 e = strchr(rcon_password.string, ' ');
1720 n = e ? e-rcon_password.string : (int)strlen(rcon_password.string);
1722 if(HMAC_MDFOUR_16BYTES((unsigned char *) (buf + 29), (unsigned char *) argbuf, strlen(argbuf), (unsigned char *) rcon_password.string, n))
1726 strlcpy(buf + 46, argbuf, sizeof(buf) - 46);
1727 NetConn_Write(mysocket, buf, 46 + strlen(buf + 46), peeraddress);
1728 cls.rcon_commands[i][0] = 0;
1731 for (k = 0;k < MAX_RCONS;k++)
1732 if(cls.rcon_commands[k][0])
1733 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[k]))
1738 NetConn_WriteString(mysocket, "\377\377\377\377getchallenge", peeraddress);
1739 // extend the timeout on other requests as we asked for a challenge
1740 for (l = 0;l < MAX_RCONS;l++)
1741 if(cls.rcon_commands[l][0])
1742 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[l]))
1743 cls.rcon_timeout[l] = realtime + rcon_secure_challengetimeout.value;
1746 return true; // we used up the challenge, so we can't use this oen for connecting now anyway
1750 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1752 // darkplaces or quake3
1753 char protocolnames[1400];
1754 Protocol_Names(protocolnames, sizeof(protocolnames));
1755 Con_DPrintf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1756 M_Update_Return_Reason("Got challenge response");
1757 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1758 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1759 // TODO: add userinfo stuff here instead of using NQ commands?
1760 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s%s\\challenge\\%s", protocolnames, cls.connect_userinfo, string + 10), peeraddress);
1763 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1765 // darkplaces or quake3
1766 M_Update_Return_Reason("Accepted");
1767 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1770 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1772 char rejectreason[128];
1773 cls.connect_trying = false;
1775 length = min(length - 7, (int)sizeof(rejectreason) - 1);
1776 memcpy(rejectreason, string, length);
1777 rejectreason[length] = 0;
1778 M_Update_Return_Reason(rejectreason);
1781 if (length >= 15 && !memcmp(string, "statusResponse\x0A", 15))
1783 serverlist_info_t *info;
1788 // search the cache for this server and update it
1789 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1793 info = &serverlist_cache[n].info;
1798 info->qcstatus[0] = 0;
1799 info->players[0] = 0;
1800 info->protocol = -1;
1801 info->numplayers = 0;
1803 info->maxplayers = 0;
1804 info->gameversion = 0;
1806 p = strchr(string, '\n');
1809 *p = 0; // cut off the string there
1813 Con_Printf("statusResponse without players block?\n");
1815 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));
1816 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1817 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1818 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));
1819 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);
1820 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);
1821 if ((s = SearchInfostring(string, "bots" )) != NULL) info->numbots = atoi(s);
1822 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);
1823 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);
1824 if ((s = SearchInfostring(string, "qcstatus" )) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1825 if (p != NULL) strlcpy(info->players, p, sizeof(info->players));
1826 info->numhumans = info->numplayers - max(0, info->numbots);
1827 info->freeslots = info->maxplayers - info->numplayers;
1829 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1833 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1835 serverlist_info_t *info;
1839 // search the cache for this server and update it
1840 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1844 info = &serverlist_cache[n].info;
1849 info->qcstatus[0] = 0;
1850 info->players[0] = 0;
1851 info->protocol = -1;
1852 info->numplayers = 0;
1854 info->maxplayers = 0;
1855 info->gameversion = 0;
1857 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));
1858 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1859 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1860 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));
1861 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);
1862 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);
1863 if ((s = SearchInfostring(string, "bots" )) != NULL) info->numbots = atoi(s);
1864 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);
1865 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);
1866 if ((s = SearchInfostring(string, "qcstatus" )) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1867 info->numhumans = info->numplayers - max(0, info->numbots);
1868 info->freeslots = info->maxplayers - info->numplayers;
1870 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1874 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1876 // Extract the IP addresses
1879 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, false);
1882 if (!strncmp(string, "getserversExtResponse", 21) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1884 // Extract the IP addresses
1887 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, true);
1890 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1892 // Extract the IP addresses
1896 if (serverlist_consoleoutput)
1897 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1898 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1900 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1901 if (serverlist_consoleoutput && developer_networking.integer)
1902 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1904 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, ipstring, false ) ) {
1908 // move on to next address in packet
1912 // begin or resume serverlist queries
1913 serverlist_querysleep = false;
1914 serverlist_querywaittime = realtime + 3;
1917 if (!strncmp(string, "extResponse ", 12))
1919 ++cl_net_extresponse_count;
1920 if(cl_net_extresponse_count > NET_EXTRESPONSE_MAX)
1921 cl_net_extresponse_count = NET_EXTRESPONSE_MAX;
1922 cl_net_extresponse_last = (cl_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
1923 dpsnprintf(cl_net_extresponse[cl_net_extresponse_last], sizeof(cl_net_extresponse[cl_net_extresponse_last]), "\"%s\" %s", addressstring2, string + 12);
1926 if (!strncmp(string, "ping", 4))
1928 if (developer_extra.integer)
1929 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
1930 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1933 if (!strncmp(string, "ack", 3))
1935 // QuakeWorld compatibility
1936 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1938 // challenge message
1939 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1940 M_Update_Return_Reason("Got QuakeWorld challenge response");
1941 cls.qw_qport = qport.integer;
1942 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1943 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1944 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo, cls.connect_userinfo), peeraddress);
1947 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1950 M_Update_Return_Reason("QuakeWorld Accepted");
1951 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1954 if (length > 2 && !memcmp(string, "n\\", 2))
1956 serverlist_info_t *info;
1960 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1961 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1964 // search the cache for this server and update it
1965 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1969 info = &serverlist_cache[n].info;
1970 strlcpy(info->game, "QuakeWorld", sizeof(info->game));
1971 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1972 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1973 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1975 info->numplayers = 0; // updated below
1976 info->numhumans = 0; // updated below
1977 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1978 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1980 // count active players on server
1981 // (we could gather more info, but we're just after the number)
1982 s = strchr(string, '\n');
1986 while (s < string + length)
1988 for (;s < string + length && *s != '\n';s++)
1990 if (s >= string + length)
1998 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2002 if (string[0] == 'n')
2005 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
2007 // we may not have liked the packet, but it was a command packet, so
2008 // we're done processing this packet now
2011 // quakeworld ingame packet
2012 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2015 CL_ParseServerMessage();
2018 // netquake control packets, supported for compatibility only
2019 if (length >= 5 && (control = BuffBigLong(data)) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length && !ENCRYPTION_REQUIRED)
2022 serverlist_info_t *info;
2026 SZ_Clear(&net_message);
2027 SZ_Write(&net_message, data, length);
2033 if (developer_extra.integer)
2034 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
2035 if (cls.connect_trying)
2037 lhnetaddress_t clientportaddress;
2038 clientportaddress = *peeraddress;
2039 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong());
2040 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
2041 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
2042 M_Update_Return_Reason("Accepted");
2043 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
2047 if (developer_extra.integer)
2048 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
2049 cls.connect_trying = false;
2050 M_Update_Return_Reason((char *)MSG_ReadString());
2052 case CCREP_SERVER_INFO:
2053 if (developer_extra.integer)
2054 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
2055 // LordHavoc: because the quake server may report weird addresses
2056 // we just ignore it and keep the real address
2058 // search the cache for this server and update it
2059 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2063 info = &serverlist_cache[n].info;
2064 strlcpy(info->game, "Quake", sizeof(info->game));
2065 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
2066 strlcpy(info->name, MSG_ReadString(), sizeof(info->name));
2067 strlcpy(info->map , MSG_ReadString(), sizeof(info->map));
2068 info->numplayers = MSG_ReadByte();
2069 info->maxplayers = MSG_ReadByte();
2070 info->protocol = MSG_ReadByte();
2072 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2075 case CCREP_RCON: // RocketGuy: ProQuake rcon support
2076 if (developer_extra.integer)
2077 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_RCON from %s.\n", addressstring2);
2079 Con_Printf("%s\n", MSG_ReadString());
2081 case CCREP_PLAYER_INFO:
2082 // we got a CCREP_PLAYER_INFO??
2083 //if (developer_extra.integer)
2084 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
2086 case CCREP_RULE_INFO:
2087 // we got a CCREP_RULE_INFO??
2088 //if (developer_extra.integer)
2089 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
2094 SZ_Clear(&net_message);
2095 // we may not have liked the packet, but it was a valid control
2096 // packet, so we're done processing this packet now
2100 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2101 CL_ParseServerMessage();
2105 void NetConn_QueryQueueFrame(void)
2111 static double querycounter = 0;
2113 if(!net_slist_pause.integer && serverlist_paused)
2114 ServerList_RebuildViewList();
2115 serverlist_paused = net_slist_pause.integer != 0;
2117 if (serverlist_querysleep)
2120 // apply a cool down time after master server replies,
2121 // to avoid messing up the ping times on the servers
2122 if (serverlist_querywaittime > realtime)
2125 // each time querycounter reaches 1.0 issue a query
2126 querycounter += cl.realframetime * net_slist_queriespersecond.value;
2127 maxqueries = (int)querycounter;
2128 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
2129 querycounter -= maxqueries;
2131 if( maxqueries == 0 ) {
2135 // scan serverlist and issue queries as needed
2136 serverlist_querysleep = true;
2138 timeouttime = realtime - net_slist_timeout.value;
2139 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
2141 serverlist_entry_t *entry = &serverlist_cache[ index ];
2142 if( entry->query != SQS_QUERYING && entry->query != SQS_REFRESHING )
2147 serverlist_querysleep = false;
2148 if( entry->querycounter != 0 && entry->querytime > timeouttime )
2153 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
2155 lhnetaddress_t address;
2158 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
2159 if (entry->protocol == PROTOCOL_QUAKEWORLD)
2161 for (socket = 0; socket < cl_numsockets ; socket++)
2162 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
2166 for (socket = 0; socket < cl_numsockets ; socket++)
2167 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getstatus", &address);
2170 // update the entry fields
2171 entry->querytime = realtime;
2172 entry->querycounter++;
2174 // if not in the slist menu we should print the server to console
2175 if (serverlist_consoleoutput)
2176 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
2182 // have we tried to refresh this server?
2183 if( entry->query == SQS_REFRESHING ) {
2184 // yes, so update the reply count (since its not responding anymore)
2186 if(!serverlist_paused)
2187 ServerList_ViewList_Remove(entry);
2189 entry->query = SQS_TIMEDOUT;
2194 void NetConn_ClientFrame(void)
2197 lhnetaddress_t peeraddress;
2198 NetConn_UpdateSockets();
2199 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
2201 if (cls.connect_remainingtries == 0)
2202 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
2203 cls.connect_nextsendtime = realtime + 1;
2204 cls.connect_remainingtries--;
2205 if (cls.connect_remainingtries <= -10)
2207 cls.connect_trying = false;
2208 M_Update_Return_Reason("Connect: Failed");
2211 // try challenge first (newer DP server or QW)
2212 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
2213 // then try netquake as a fallback (old server, or netquake)
2214 SZ_Clear(&net_message);
2215 // save space for the header, filled in later
2216 MSG_WriteLong(&net_message, 0);
2217 MSG_WriteByte(&net_message, CCREQ_CONNECT);
2218 MSG_WriteString(&net_message, "QUAKE");
2219 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2220 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2221 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
2222 SZ_Clear(&net_message);
2224 for (i = 0;i < cl_numsockets;i++)
2226 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2228 // R_TimeReport("clientreadnetwork");
2229 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
2230 // R_TimeReport("clientparsepacket");
2233 NetConn_QueryQueueFrame();
2234 if (cls.netcon && realtime > cls.netcon->timeout && !sv.active)
2236 Con_Print("Connection timed out\n");
2238 Host_ShutdownServer ();
2242 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
2246 for (i = 0;i < bufferlength - 1;i++)
2250 c = rand () % (127 - 33) + 33;
2251 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
2257 /// (div0) build the full response only if possible; better a getinfo response than no response at all if getstatus won't fit
2258 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
2261 unsigned int nb_clients = 0, nb_bots = 0, i;
2264 const char *crypto_idstring;
2268 // How many clients are there?
2269 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2271 if (svs.clients[i].active)
2274 if (!svs.clients[i].netconnection)
2280 if(prog->globaloffsets.worldstatus >= 0)
2282 const char *str = PRVM_G_STRING(prog->globaloffsets.worldstatus);
2288 for(q = str; *q && p - qcstatus < (ptrdiff_t)(sizeof(qcstatus)) - 1; ++q)
2289 if(*q != '\\' && *q != '\n')
2295 /// \TODO: we should add more information for the full status string
2296 crypto_idstring = Crypto_GetInfoResponseDataString();
2297 length = dpsnprintf(out_msg, out_size,
2298 "\377\377\377\377%s\x0A"
2299 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
2300 "\\clients\\%d\\bots\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
2305 fullstatus ? "statusResponse" : "infoResponse",
2306 gamename, com_modname, gameversion.integer, svs.maxclients,
2307 nb_clients, nb_bots, sv.worldbasename, hostname.string, NET_PROTOCOL_VERSION,
2308 *qcstatus ? "\\qcstatus\\" : "", qcstatus,
2309 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
2310 crypto_idstring ? "\\d0_blind_id\\" : "", crypto_idstring ? crypto_idstring : "",
2311 fullstatus ? "\n" : "");
2313 // Make sure it fits in the buffer
2323 savelength = length;
2325 ptr = out_msg + length;
2326 left = (int)out_size - length;
2328 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2330 client_t *cl = &svs.clients[i];
2333 int nameind, cleanind, pingvalue;
2335 char cleanname [sizeof(cl->name)];
2337 // Remove all characters '"' and '\' in the player name
2342 curchar = cl->name[nameind++];
2343 if (curchar != '"' && curchar != '\\')
2345 cleanname[cleanind++] = curchar;
2346 if (cleanind == sizeof(cleanname) - 1)
2349 } while (curchar != '\0');
2350 cleanname[cleanind] = 0; // cleanind is always a valid index even at this point
2352 pingvalue = (int)(cl->ping * 1000.0f);
2353 if(cl->netconnection)
2354 pingvalue = bound(1, pingvalue, 9999);
2359 if(prog->fieldoffsets.clientstatus >= 0)
2361 const char *str = PRVM_E_STRING(PRVM_EDICT_NUM(i + 1), prog->fieldoffsets.clientstatus);
2367 for(q = str; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q)
2368 if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q))
2374 if ((gamemode == GAME_NEXUIZ || gamemode == GAME_XONOTIC) && (teamplay.integer > 0))
2376 if(cl->frags == -666) // spectator
2377 strlcpy(teambuf, " 0", sizeof(teambuf));
2378 else if(cl->colors == 0x44) // red team
2379 strlcpy(teambuf, " 1", sizeof(teambuf));
2380 else if(cl->colors == 0xDD) // blue team
2381 strlcpy(teambuf, " 2", sizeof(teambuf));
2382 else if(cl->colors == 0xCC) // yellow team
2383 strlcpy(teambuf, " 3", sizeof(teambuf));
2384 else if(cl->colors == 0x99) // pink team
2385 strlcpy(teambuf, " 4", sizeof(teambuf));
2387 strlcpy(teambuf, " 0", sizeof(teambuf));
2392 // note: team number is inserted according to SoF2 protocol
2394 length = dpsnprintf(ptr, left, "%s %d%s \"%s\"\n",
2400 length = dpsnprintf(ptr, left, "%d %d%s \"%s\"\n",
2409 // turn it into an infoResponse!
2410 out_msg[savelength] = 0;
2411 memcpy(out_msg + 4, "infoResponse\x0A", 13);
2412 memmove(out_msg + 17, out_msg + 19, savelength - 19);
2429 static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
2431 int floodslotnum, bestfloodslotnum;
2432 double bestfloodtime;
2433 lhnetaddress_t noportpeeraddress;
2434 // see if this is a connect flood
2435 noportpeeraddress = *peeraddress;
2436 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2437 bestfloodslotnum = 0;
2438 bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
2439 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
2441 if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
2443 bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
2444 bestfloodslotnum = floodslotnum;
2446 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
2448 // this address matches an ongoing flood address
2449 if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
2451 // renew the ban on this address so it does not expire
2452 // until the flood has subsided
2453 sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
2454 //Con_Printf("Flood detected!\n");
2457 // the flood appears to have subsided, so allow this
2458 bestfloodslotnum = floodslotnum; // reuse the same slot
2462 // begin a new timeout on this address
2463 sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
2464 sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
2465 //Con_Printf("Flood detection initiated!\n");
2469 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
2472 lhnetaddress_t noportpeeraddress;
2473 // see if this is a connect flood
2474 noportpeeraddress = *peeraddress;
2475 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2476 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
2478 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
2480 // this address matches an ongoing flood address
2482 sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
2483 sv.connectfloodaddresses[floodslotnum].lasttime = 0;
2484 //Con_Printf("Flood cleared!\n");
2489 typedef qboolean (*rcon_matchfunc_t) (lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen);
2491 qboolean hmac_mdfour_time_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2496 t1 = (long) time(NULL);
2497 t2 = strtol(s, NULL, 0);
2498 if(abs(t1 - t2) > rcon_secure_maxdiff.integer)
2501 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
2504 return !memcmp(mdfourbuf, hash, 16);
2507 qboolean hmac_mdfour_challenge_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2512 if(slen < (int)(sizeof(challenge[0].string)) - 1)
2515 // validate the challenge
2516 for (i = 0;i < MAX_CHALLENGES;i++)
2517 if(challenge[i].time > 0)
2518 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strncmp(challenge[i].string, s, sizeof(challenge[0].string) - 1))
2520 // if the challenge is not recognized, drop the packet
2521 if (i == MAX_CHALLENGES)
2524 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
2527 if(memcmp(mdfourbuf, hash, 16))
2530 // unmark challenge to prevent replay attacks
2531 challenge[i].time = 0;
2536 qboolean plaintext_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2538 return !strcmp(password, hash);
2541 /// returns a string describing the user level, or NULL for auth failure
2542 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)
2544 const char *text, *userpass_start, *userpass_end, *userpass_startpass;
2545 static char buf[MAX_INPUTLINE];
2547 qboolean restricted = false;
2548 qboolean have_usernames = false;
2550 userpass_start = rcon_password.string;
2551 while((userpass_end = strchr(userpass_start, ' ')))
2553 have_usernames = true;
2554 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2556 if(comparator(peeraddress, buf, password, cs, cslen))
2558 userpass_start = userpass_end + 1;
2560 if(userpass_start[0])
2562 userpass_end = userpass_start + strlen(userpass_start);
2563 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2568 have_usernames = false;
2569 userpass_start = rcon_restricted_password.string;
2570 while((userpass_end = strchr(userpass_start, ' ')))
2572 have_usernames = true;
2573 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2575 if(comparator(peeraddress, buf, password, cs, cslen))
2577 userpass_start = userpass_end + 1;
2579 if(userpass_start[0])
2581 userpass_end = userpass_start + strlen(userpass_start);
2582 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2586 return NULL; // DENIED
2589 for(text = s; text != endpos; ++text)
2590 if((signed char) *text > 0 && ((signed char) *text < (signed char) ' ' || *text == ';'))
2591 return NULL; // block possible exploits against the parser/alias expansion
2595 size_t l = strlen(s);
2598 hasquotes = (strchr(s, '"') != NULL);
2599 // sorry, we can't allow these substrings in wildcard expressions,
2600 // as they can mess with the argument counts
2601 text = rcon_restricted_commands.string;
2602 while(COM_ParseToken_Console(&text))
2604 // com_token now contains a pattern to check for...
2605 if(strchr(com_token, '*') || strchr(com_token, '?')) // wildcard expression, * can only match a SINGLE argument
2608 if(matchpattern_with_separator(s, com_token, true, " ", true)) // note how we excluded tab, newline etc. above
2611 else if(strchr(com_token, ' ')) // multi-arg expression? must match in whole
2613 if(!strcmp(com_token, s))
2616 else // single-arg expression? must match the beginning of the command
2618 if(!strcmp(com_token, s))
2620 if(!memcmp(va("%s ", com_token), s, strlen(com_token) + 1))
2624 // if we got here, nothing matched!
2632 userpass_startpass = strchr(userpass_start, ':');
2633 if(have_usernames && userpass_startpass && userpass_startpass < userpass_end)
2634 return va("%srcon (username %.*s)", restricted ? "restricted " : "", (int)(userpass_startpass-userpass_start), userpass_start);
2636 return va("%srcon", restricted ? "restricted " : "");
2639 void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos)
2643 // looks like a legitimate rcon command with the correct password
2644 const char *s_ptr = s;
2645 Con_Printf("server received %s command from %s: ", userlevel, host_client ? host_client->name : addressstring2);
2646 while(s_ptr != endpos)
2648 size_t l = strlen(s_ptr);
2650 Con_Printf(" %s;", s_ptr);
2655 if (!host_client || !host_client->netconnection || LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2656 Con_Rcon_Redirect_Init(mysocket, peeraddress);
2659 size_t l = strlen(s);
2662 client_t *host_client_save = host_client;
2663 Cmd_ExecuteString(s, src_command);
2664 host_client = host_client_save;
2665 // in case it is a command that changes host_client (like restart)
2669 Con_Rcon_Redirect_End();
2673 Con_Printf("server denied rcon access to %s\n", host_client ? host_client->name : addressstring2);
2677 extern void SV_SendServerinfo (client_t *client);
2678 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
2680 int i, ret, clientnum, best;
2683 char *s, *string, response[1400], addressstring2[128];
2684 static char stringbuf[16384];
2685 qboolean islocal = (LHNETADDRESS_GetAddressType(peeraddress) == LHNETADDRESSTYPE_LOOP);
2686 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
2687 size_t sendlength, response_len;
2692 // convert the address to a string incase we need it
2693 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
2695 // see if we can identify the sender as a local player
2696 // (this is necessary for rcon to send a reliable reply if the client is
2697 // actually on the server, not sending remotely)
2698 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2699 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
2701 if (i == svs.maxclients)
2704 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
2706 // received a command string - strip off the packaging and put it
2707 // into our string buffer with NULL termination
2710 length = min(length, (int)sizeof(stringbuf) - 1);
2711 memcpy(stringbuf, data, length);
2712 stringbuf[length] = 0;
2715 if (developer_extra.integer)
2717 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
2718 Com_HexDumpToConsole(data, length);
2721 sendlength = sizeof(senddata) - 4;
2722 switch(Crypto_ServerParsePacket(string, length, senddata+4, &sendlength, peeraddress))
2724 case CRYPTO_NOMATCH:
2730 memcpy(senddata, "\377\377\377\377", 4);
2731 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
2734 case CRYPTO_DISCARD:
2737 memcpy(senddata, "\377\377\377\377", 4);
2738 NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
2742 case CRYPTO_REPLACE:
2743 string = senddata+4;
2744 length = sendlength;
2748 if (length >= 12 && !memcmp(string, "getchallenge", 12) && (islocal || sv_public.integer > -3))
2750 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
2752 if(challenge[i].time > 0)
2753 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
2755 if (besttime > challenge[i].time)
2756 besttime = challenge[best = i].time;
2758 // if we did not find an exact match, choose the oldest and
2759 // update address and string
2760 if (i == MAX_CHALLENGES)
2763 challenge[i].address = *peeraddress;
2764 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
2766 challenge[i].time = realtime;
2767 // send the challenge
2768 dpsnprintf(response, sizeof(response), "\377\377\377\377challenge %s", challenge[i].string);
2769 response_len = strlen(response) + 1;
2770 Crypto_ServerAppendToChallenge(string, length, response, &response_len, sizeof(response));
2771 NetConn_Write(mysocket, response, response_len, peeraddress);
2774 if (length > 8 && !memcmp(string, "connect\\", 8))
2776 crypto_t *crypto = Crypto_ServerGetInstance(peeraddress);
2780 if(crypto && crypto->authenticated)
2782 // no need to check challenge
2783 if(crypto_developer.integer)
2785 Con_Printf("%s connection to %s is being established: client is %s@%.*s, I am %.*s@%.*s\n",
2786 crypto->use_aes ? "Encrypted" : "Authenticated",
2788 crypto->client_idfp[0] ? crypto->client_idfp : "-",
2789 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-",
2790 crypto_keyfp_recommended_length, crypto->server_idfp[0] ? crypto->server_idfp : "-",
2791 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-"
2797 if ((s = SearchInfostring(string, "challenge")))
2799 // validate the challenge
2800 for (i = 0;i < MAX_CHALLENGES;i++)
2801 if(challenge[i].time > 0)
2802 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
2804 // if the challenge is not recognized, drop the packet
2805 if (i == MAX_CHALLENGES)
2810 if((s = SearchInfostring(string, "message")))
2811 Con_DPrintf("Connecting client %s sent us the message: %s\n", addressstring2, s);
2813 if(!(islocal || sv_public.integer > -2))
2815 if (developer_extra.integer)
2816 Con_Printf("Datagram_ParseConnectionless: sending \"reject %s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
2817 NetConn_WriteString(mysocket, va("\377\377\377\377reject %s", sv_public_rejectreason.string), peeraddress);
2821 // check engine protocol
2822 if(!(s = SearchInfostring(string, "protocol")) || strcmp(s, "darkplaces 3"))
2824 if (developer_extra.integer)
2825 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
2826 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
2830 // see if this is a duplicate connection request or a disconnected
2831 // client who is rejoining to the same client slot
2832 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2834 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2836 // this is a known client...
2837 if(crypto && crypto->authenticated)
2839 // reject if changing key!
2840 if(client->netconnection->crypto.authenticated)
2843 strcmp(client->netconnection->crypto.client_idfp, crypto->client_idfp)
2845 strcmp(client->netconnection->crypto.server_idfp, crypto->server_idfp)
2847 strcmp(client->netconnection->crypto.client_keyfp, crypto->client_keyfp)
2849 strcmp(client->netconnection->crypto.server_keyfp, crypto->server_keyfp)
2852 if (developer_extra.integer)
2853 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to change key of crypto.\" to %s.\n", addressstring2);
2854 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to change key of crypto.", peeraddress);
2861 // reject if downgrading!
2862 if(client->netconnection->crypto.authenticated)
2864 if (developer_extra.integer)
2865 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to downgrade crypto.\" to %s.\n", addressstring2);
2866 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to downgrade crypto.", peeraddress);
2870 if (client->spawned)
2872 // client crashed and is coming back,
2873 // keep their stuff intact
2874 if (developer_extra.integer)
2875 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
2876 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2877 if(crypto && crypto->authenticated)
2878 Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
2880 SV_SendServerinfo(client);
2885 // client is still trying to connect,
2886 // so we send a duplicate reply
2887 if (developer_extra.integer)
2888 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
2889 if(crypto && crypto->authenticated)
2890 Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
2891 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2897 if (NetConn_PreventConnectFlood(peeraddress))
2900 // find an empty client slot for this new client
2901 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2904 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
2906 // allocated connection
2907 if (developer_extra.integer)
2908 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
2909 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
2910 // now set up the client
2911 if(crypto && crypto->authenticated)
2912 Crypto_ServerFinishInstance(&conn->crypto, crypto);
2914 SV_ConnectClient(clientnum, conn);
2916 NetConn_Heartbeat(1);
2921 // no empty slots found - server is full
2922 if (developer_extra.integer)
2923 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
2924 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
2928 if (length >= 7 && !memcmp(string, "getinfo", 7) && (islocal || sv_public.integer > -1))
2930 const char *challenge = NULL;
2932 // If there was a challenge in the getinfo message
2933 if (length > 8 && string[7] == ' ')
2934 challenge = string + 8;
2936 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
2938 if (developer_extra.integer)
2939 Con_DPrintf("Sending reply to master %s - %s\n", addressstring2, response);
2940 NetConn_WriteString(mysocket, response, peeraddress);
2944 if (length >= 9 && !memcmp(string, "getstatus", 9) && (islocal || sv_public.integer > -1))
2946 const char *challenge = NULL;
2948 // If there was a challenge in the getinfo message
2949 if (length > 10 && string[9] == ' ')
2950 challenge = string + 10;
2952 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
2954 if (developer_extra.integer)
2955 Con_DPrintf("Sending reply to client %s - %s\n", addressstring2, response);
2956 NetConn_WriteString(mysocket, response, peeraddress);
2960 if (length >= 37 && !memcmp(string, "srcon HMAC-MD4 TIME ", 20))
2962 char *password = string + 20;
2963 char *timeval = string + 37;
2964 char *s = strchr(timeval, ' ');
2965 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
2966 const char *userlevel;
2968 if(rcon_secure.integer > 1)
2972 return true; // invalid packet
2975 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_time_matching, timeval, endpos - timeval - 1); // not including the appended \0 into the HMAC
2976 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos);
2979 if (length >= 42 && !memcmp(string, "srcon HMAC-MD4 CHALLENGE ", 25))
2981 char *password = string + 25;
2982 char *challenge = string + 42;
2983 char *s = strchr(challenge, ' ');
2984 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
2985 const char *userlevel;
2987 return true; // invalid packet
2990 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_challenge_matching, challenge, endpos - challenge - 1); // not including the appended \0 into the HMAC
2991 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos);
2994 if (length >= 5 && !memcmp(string, "rcon ", 5))
2997 char *s = string + 5;
2998 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3001 if(rcon_secure.integer > 0)
3004 for (i = 0;!ISWHITESPACE(*s);s++)
3005 if (i < (int)sizeof(password) - 1)
3007 if(ISWHITESPACE(*s) && s != endpos) // skip leading ugly space
3010 if (!ISWHITESPACE(password[0]))
3012 const char *userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3013 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos);
3017 if (!strncmp(string, "extResponse ", 12))
3019 ++sv_net_extresponse_count;
3020 if(sv_net_extresponse_count > NET_EXTRESPONSE_MAX)
3021 sv_net_extresponse_count = NET_EXTRESPONSE_MAX;
3022 sv_net_extresponse_last = (sv_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
3023 dpsnprintf(sv_net_extresponse[sv_net_extresponse_last], sizeof(sv_net_extresponse[sv_net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
3026 if (!strncmp(string, "ping", 4))
3028 if (developer_extra.integer)
3029 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
3030 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
3033 if (!strncmp(string, "ack", 3))
3035 // we may not have liked the packet, but it was a command packet, so
3036 // we're done processing this packet now
3039 // netquake control packets, supported for compatibility only, and only
3040 // when running game protocols that are normally served via this connection
3042 // (this protects more modern protocols against being used for
3043 // Quake packet flood Denial Of Service attacks)
3044 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)
3048 const char *protocolname;
3051 SZ_Clear(&net_message);
3052 SZ_Write(&net_message, data, length);
3058 if (developer_extra.integer)
3059 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
3060 if(!(islocal || sv_public.integer > -2))
3062 if (developer_extra.integer)
3063 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"%s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
3064 SZ_Clear(&net_message);
3065 // save space for the header, filled in later
3066 MSG_WriteLong(&net_message, 0);
3067 MSG_WriteByte(&net_message, CCREP_REJECT);
3068 MSG_WriteString(&net_message, va("%s\n", sv_public_rejectreason.string));
3069 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3070 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3071 SZ_Clear(&net_message);
3075 protocolname = MSG_ReadString();
3076 protocolnumber = MSG_ReadByte();
3077 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
3079 if (developer_extra.integer)
3080 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
3081 SZ_Clear(&net_message);
3082 // save space for the header, filled in later
3083 MSG_WriteLong(&net_message, 0);
3084 MSG_WriteByte(&net_message, CCREP_REJECT);
3085 MSG_WriteString(&net_message, "Incompatible version.\n");
3086 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3087 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3088 SZ_Clear(&net_message);
3092 // see if this connect request comes from a known client
3093 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3095 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
3097 // this is either a duplicate connection request
3098 // or coming back from a timeout
3099 // (if so, keep their stuff intact)
3102 if (developer_extra.integer)
3103 Con_DPrintf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
3104 SZ_Clear(&net_message);
3105 // save space for the header, filled in later
3106 MSG_WriteLong(&net_message, 0);
3107 MSG_WriteByte(&net_message, CCREP_ACCEPT);
3108 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
3109 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3110 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3111 SZ_Clear(&net_message);
3113 // if client is already spawned, re-send the
3114 // serverinfo message as they'll need it to play
3115 if (client->spawned)
3118 SV_SendServerinfo(client);
3125 // this is a new client, check for connection flood
3126 if (NetConn_PreventConnectFlood(peeraddress))
3129 // find a slot for the new client
3130 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3133 if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
3135 // connect to the client
3136 // everything is allocated, just fill in the details
3137 strlcpy (conn->address, addressstring2, sizeof (conn->address));
3138 if (developer_extra.integer)
3139 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
3140 // send back the info about the server connection
3141 SZ_Clear(&net_message);
3142 // save space for the header, filled in later
3143 MSG_WriteLong(&net_message, 0);
3144 MSG_WriteByte(&net_message, CCREP_ACCEPT);
3145 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
3146 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3147 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3148 SZ_Clear(&net_message);
3149 // now set up the client struct
3151 SV_ConnectClient(clientnum, conn);
3153 NetConn_Heartbeat(1);
3158 if (developer_extra.integer)
3159 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
3160 // no room; try to let player know
3161 SZ_Clear(&net_message);
3162 // save space for the header, filled in later
3163 MSG_WriteLong(&net_message, 0);
3164 MSG_WriteByte(&net_message, CCREP_REJECT);
3165 MSG_WriteString(&net_message, "Server is full.\n");
3166 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3167 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3168 SZ_Clear(&net_message);
3170 case CCREQ_SERVER_INFO:
3171 if (developer_extra.integer)
3172 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
3173 if(!(islocal || sv_public.integer > -1))
3175 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
3178 char myaddressstring[128];
3179 if (developer_extra.integer)
3180 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
3181 SZ_Clear(&net_message);
3182 // save space for the header, filled in later
3183 MSG_WriteLong(&net_message, 0);
3184 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
3185 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
3186 MSG_WriteString(&net_message, myaddressstring);
3187 MSG_WriteString(&net_message, hostname.string);
3188 MSG_WriteString(&net_message, sv.name);
3189 // How many clients are there?
3190 for (i = 0, numclients = 0;i < svs.maxclients;i++)
3191 if (svs.clients[i].active)
3193 MSG_WriteByte(&net_message, numclients);
3194 MSG_WriteByte(&net_message, svs.maxclients);
3195 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
3196 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3197 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3198 SZ_Clear(&net_message);
3201 case CCREQ_PLAYER_INFO:
3202 if (developer_extra.integer)
3203 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
3204 if(!(islocal || sv_public.integer > -1))
3208 int playerNumber, activeNumber, clientNumber;
3211 playerNumber = MSG_ReadByte();
3213 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
3214 if (client->active && ++activeNumber == playerNumber)
3216 if (clientNumber != svs.maxclients)
3218 SZ_Clear(&net_message);
3219 // save space for the header, filled in later
3220 MSG_WriteLong(&net_message, 0);
3221 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
3222 MSG_WriteByte(&net_message, playerNumber);
3223 MSG_WriteString(&net_message, client->name);
3224 MSG_WriteLong(&net_message, client->colors);
3225 MSG_WriteLong(&net_message, client->frags);
3226 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
3227 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
3228 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3229 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3230 SZ_Clear(&net_message);
3234 case CCREQ_RULE_INFO:
3235 if (developer_extra.integer)
3236 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
3237 if(!(islocal || sv_public.integer > -1))
3244 // find the search start location
3245 prevCvarName = MSG_ReadString();
3246 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
3248 // send the response
3249 SZ_Clear(&net_message);
3250 // save space for the header, filled in later
3251 MSG_WriteLong(&net_message, 0);
3252 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
3255 MSG_WriteString(&net_message, var->name);
3256 MSG_WriteString(&net_message, var->string);
3258 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3259 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
3260 SZ_Clear(&net_message);
3266 SZ_Clear(&net_message);
3267 // we may not have liked the packet, but it was a valid control
3268 // packet, so we're done processing this packet now
3273 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
3276 SV_ReadClientMessage();
3284 void NetConn_ServerFrame(void)
3287 lhnetaddress_t peeraddress;
3288 for (i = 0;i < sv_numsockets;i++)
3289 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
3290 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
3291 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
3293 // never timeout loopback connections
3294 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
3296 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
3298 SV_DropClient(false);
3304 void NetConn_SleepMicroseconds(int microseconds)
3306 LHNET_SleepUntilPacket_Microseconds(microseconds);
3309 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
3313 lhnetaddress_t masteraddress;
3314 lhnetaddress_t broadcastaddress;
3317 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
3320 // 26000 is the default quake server port, servers on other ports will not
3322 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
3323 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
3327 for (i = 0;i < cl_numsockets;i++)
3331 const char *cmdname, *extraoptions;
3332 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3334 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3336 // search LAN for Quake servers
3337 SZ_Clear(&net_message);
3338 // save space for the header, filled in later
3339 MSG_WriteLong(&net_message, 0);
3340 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
3341 MSG_WriteString(&net_message, "QUAKE");
3342 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
3343 StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
3344 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
3345 SZ_Clear(&net_message);
3347 // search LAN for DarkPlaces servers
3348 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getstatus", &broadcastaddress);
3351 // build the getservers message to send to the dpmaster master servers
3352 if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == LHNETADDRESSTYPE_INET6)
3354 cmdname = "getserversExt";
3355 extraoptions = " ipv4 ipv6"; // ask for IPv4 and IPv6 servers
3359 cmdname = "getservers";
3362 dpsnprintf(request, sizeof(request), "\377\377\377\377%s %s %u empty full%s", cmdname, gamename, NET_PROTOCOL_VERSION, extraoptions);
3365 for (masternum = 0;sv_masters[masternum].name;masternum++)
3367 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == af)
3370 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
3374 // search favorite servers
3375 for(j = 0; j < nFavorites; ++j)
3377 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3379 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3380 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, request, true );
3387 // only query QuakeWorld servers when the user wants to
3390 for (i = 0;i < cl_numsockets;i++)
3394 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3396 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3398 // search LAN for QuakeWorld servers
3399 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
3401 // build the getservers message to send to the qwmaster master servers
3402 // note this has no -1 prefix, and the trailing nul byte is sent
3403 dpsnprintf(request, sizeof(request), "c\n");
3407 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
3409 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
3411 if (m_state != m_slist)
3413 char lookupstring[128];
3414 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
3415 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
3418 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
3422 // search favorite servers
3423 for(j = 0; j < nFavorites; ++j)
3425 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3427 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3429 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &favorites[j]);
3430 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, request, true );
3437 if (!masterquerycount)
3439 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
3440 M_Update_Return_Reason("No network");
3444 void NetConn_Heartbeat(int priority)
3446 lhnetaddress_t masteraddress;
3448 lhnetsocket_t *mysocket;
3450 // if it's a state change (client connected), limit next heartbeat to no
3451 // more than 30 sec in the future
3452 if (priority == 1 && nextheartbeattime > realtime + 30.0)
3453 nextheartbeattime = realtime + 30.0;
3455 // limit heartbeatperiod to 30 to 270 second range,
3456 // lower limit is to avoid abusing master servers with excess traffic,
3457 // upper limit is to avoid timing out on the master server (which uses
3459 if (sv_heartbeatperiod.value < 30)
3460 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
3461 if (sv_heartbeatperiod.value > 270)
3462 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
3464 // make advertising optional and don't advertise singleplayer games, and
3465 // only send a heartbeat as often as the admin wants
3466 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
3468 nextheartbeattime = realtime + sv_heartbeatperiod.value;
3469 for (masternum = 0;sv_masters[masternum].name;masternum++)
3470 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
3471 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
3475 static void Net_Heartbeat_f(void)
3478 NetConn_Heartbeat(2);
3480 Con_Print("No server running, can not heartbeat to master server.\n");
3483 void PrintStats(netconn_t *conn)
3485 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
3486 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->outgoing_unreliable_sequence, conn->qw.incoming_sequence);
3488 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
3491 void Net_Stats_f(void)
3494 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
3495 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
3496 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
3497 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
3498 Con_Printf("packetsSent = %i\n", packetsSent);
3499 Con_Printf("packetsReSent = %i\n", packetsReSent);
3500 Con_Printf("packetsReceived = %i\n", packetsReceived);
3501 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
3502 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
3503 Con_Print("connections =\n");
3504 for (conn = netconn_list;conn;conn = conn->next)
3508 void Net_Refresh_f(void)
3510 if (m_state != m_slist) {
3511 Con_Print("Sending new requests to master servers\n");
3512 ServerList_QueryList(false, true, false, true);
3513 Con_Print("Listening for replies...\n");
3515 ServerList_QueryList(false, true, false, false);
3518 void Net_Slist_f(void)
3520 ServerList_ResetMasks();
3521 serverlist_sortbyfield = SLIF_PING;
3522 serverlist_sortflags = 0;
3523 if (m_state != m_slist) {
3524 Con_Print("Sending requests to master servers\n");
3525 ServerList_QueryList(true, true, false, true);
3526 Con_Print("Listening for replies...\n");
3528 ServerList_QueryList(true, true, false, false);
3531 void Net_SlistQW_f(void)
3533 ServerList_ResetMasks();
3534 serverlist_sortbyfield = SLIF_PING;
3535 serverlist_sortflags = 0;
3536 if (m_state != m_slist) {
3537 Con_Print("Sending requests to master servers\n");
3538 ServerList_QueryList(true, false, true, true);
3539 serverlist_consoleoutput = true;
3540 Con_Print("Listening for replies...\n");
3542 ServerList_QueryList(true, false, true, false);
3545 void NetConn_Init(void)
3548 lhnetaddress_t tempaddress;
3549 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
3550 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
3551 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
3552 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
3553 Cmd_AddCommand("net_refresh", Net_Refresh_f, "query dp master servers and refresh all server information");
3554 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
3555 Cvar_RegisterVariable(&rcon_restricted_password);
3556 Cvar_RegisterVariable(&rcon_restricted_commands);
3557 Cvar_RegisterVariable(&rcon_secure_maxdiff);
3558 Cvar_RegisterVariable(&net_slist_queriespersecond);
3559 Cvar_RegisterVariable(&net_slist_queriesperframe);
3560 Cvar_RegisterVariable(&net_slist_timeout);
3561 Cvar_RegisterVariable(&net_slist_maxtries);
3562 Cvar_RegisterVariable(&net_slist_favorites);
3563 Cvar_RegisterVariable(&net_slist_pause);
3564 Cvar_RegisterVariable(&net_messagetimeout);
3565 Cvar_RegisterVariable(&net_connecttimeout);
3566 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
3567 Cvar_RegisterVariable(&cl_netlocalping);
3568 Cvar_RegisterVariable(&cl_netpacketloss_send);
3569 Cvar_RegisterVariable(&cl_netpacketloss_receive);
3570 Cvar_RegisterVariable(&hostname);
3571 Cvar_RegisterVariable(&developer_networking);
3572 Cvar_RegisterVariable(&cl_netport);
3573 Cvar_RegisterVariable(&sv_netport);
3574 Cvar_RegisterVariable(&net_address);
3575 Cvar_RegisterVariable(&net_address_ipv6);
3576 Cvar_RegisterVariable(&sv_public);
3577 Cvar_RegisterVariable(&sv_public_rejectreason);
3578 Cvar_RegisterVariable(&sv_heartbeatperiod);
3579 for (i = 0;sv_masters[i].name;i++)
3580 Cvar_RegisterVariable(&sv_masters[i]);
3581 Cvar_RegisterVariable(&gameversion);
3582 Cvar_RegisterVariable(&gameversion_min);
3583 Cvar_RegisterVariable(&gameversion_max);
3584 // 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.
3585 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
3587 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
3589 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
3590 Cvar_SetQuick(&net_address, com_argv[i + 1]);
3593 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
3595 // 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
3596 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
3598 i = atoi(com_argv[i + 1]);
3599 if (i >= 0 && i < 65536)
3601 Con_Printf("-port option used, setting port cvar to %i\n", i);
3602 Cvar_SetValueQuick(&sv_netport, i);
3605 Con_Printf("-port option used, but %i is not a valid port number\n", i);
3609 net_message.data = net_message_buf;
3610 net_message.maxsize = sizeof(net_message_buf);
3611 net_message.cursize = 0;
3615 void NetConn_Shutdown(void)
3617 NetConn_CloseClientPorts();
3618 NetConn_CloseServerPorts();