--- /dev/null
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+Copyright (C) 2002 Mathieu Olivier
+Copyright (C) 2003 Forest Hale
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+
+#include "quakedef.h"
+#include "lhnet.h"
+
+// for secure rcon authentication
+#include "hmac.h"
+#include "mdfour.h"
+#include <time.h>
+
+#define QWMASTER_PORT 27000
+#define DPMASTER_PORT 27950
+
+// note this defaults on for dedicated servers, off for listen servers
+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"};
+cvar_t sv_public_rejectreason = {0, "sv_public_rejectreason", "The server is closing.", "Rejection reason for connects when sv_public is -2"};
+static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
+extern cvar_t sv_status_privacy;
+
+static cvar_t sv_masters [] =
+{
+ {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
+ {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
+ {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
+ {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
+ {0, "sv_masterextra1", "69.59.212.88", "ghdigital.com - default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
+ {0, "sv_masterextra2", "64.22.107.125", "dpmaster.deathmask.net - default master server 2 (admin: Willis)"}, // admin: Willis
+ {0, "sv_masterextra3", "92.62.40.73", "dpmaster.tchr.no - default master server 3 (admin: tChr)"}, // admin: tChr
+#ifdef SUPPORTIPV6
+ {0, "sv_masterextra4", "[2001:41d0:2:1628::4450]:27950", "dpmaster.div0.qc.to - default master server 4 (admin: divVerent)"}, // admin: divVerent
+#endif
+ {0, NULL, NULL, NULL}
+};
+
+static cvar_t sv_qwmasters [] =
+{
+ {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
+ {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
+ {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
+ {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
+ {0, "sv_qwmasterextra1", "master.quakeservers.net:27000", "Global master server. (admin: unknown)"},
+ {0, "sv_qwmasterextra2", "asgaard.morphos-team.net:27000", "Global master server. (admin: unknown)"},
+ {0, "sv_qwmasterextra3", "qwmaster.ocrana.de:27000", "German master server. (admin: unknown)"},
+ {0, "sv_qwmasterextra4", "masterserver.exhale.de:27000", "German master server. (admin: unknown)"},
+ {0, "sv_qwmasterextra5", "kubus.rulez.pl:27000", "Poland master server. (admin: unknown)"},
+ {0, NULL, NULL, NULL}
+};
+
+static double nextheartbeattime = 0;
+
+sizebuf_t net_message;
+static unsigned char net_message_buf[NET_MAXMESSAGE];
+
+cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
+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."};
+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)"};
+cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
+cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
+
+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)"};
+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)"};
+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)"};
+static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
+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)"};
+static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
+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"};
+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)"};
+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"};
+static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific) to be sent to querying clients"};
+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"};
+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"};
+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"};
+static cvar_t rcon_restricted_commands = {0, "rcon_restricted_commands", "", "allowed commands for rcon when the restricted mode password was used"};
+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)"};
+extern cvar_t rcon_secure;
+extern cvar_t rcon_secure_challengetimeout;
+
+/* statistic counters */
+static int packetsSent = 0;
+static int packetsReSent = 0;
+static int packetsReceived = 0;
+static int receivedDuplicateCount = 0;
+static int droppedDatagrams = 0;
+
+static int unreliableMessagesSent = 0;
+static int unreliableMessagesReceived = 0;
+static int reliableMessagesSent = 0;
+static int reliableMessagesReceived = 0;
+
+double masterquerytime = -1000;
+int masterquerycount = 0;
+int masterreplycount = 0;
+int serverquerycount = 0;
+int serverreplycount = 0;
+
+challenge_t challenge[MAX_CHALLENGES];
+
+/// this is only false if there are still servers left to query
+static qboolean serverlist_querysleep = true;
+static qboolean serverlist_paused = false;
+/// this is pushed a second or two ahead of realtime whenever a master server
+/// reply is received, to avoid issuing queries while master replies are still
+/// flooding in (which would make a mess of the ping times)
+static double serverlist_querywaittime = 0;
+
+static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
+static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
+static unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
+static unsigned char cryptoreadbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
+
+static int cl_numsockets;
+static lhnetsocket_t *cl_sockets[16];
+static int sv_numsockets;
+static lhnetsocket_t *sv_sockets[16];
+
+netconn_t *netconn_list = NULL;
+mempool_t *netconn_mempool = NULL;
+
+cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
+cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
+cvar_t net_address = {0, "net_address", "", "network address to open ipv4 ports on (if empty, use default interfaces)"};
+cvar_t net_address_ipv6 = {0, "net_address_ipv6", "", "network address to open ipv6 ports on (if empty, use default interfaces)"};
+
+char cl_net_extresponse[NET_EXTRESPONSE_MAX][1400];
+int cl_net_extresponse_count = 0;
+int cl_net_extresponse_last = 0;
+
+char sv_net_extresponse[NET_EXTRESPONSE_MAX][1400];
+int sv_net_extresponse_count = 0;
+int sv_net_extresponse_last = 0;
+
+// ServerList interface
+serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
+serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
+
+serverlist_infofield_t serverlist_sortbyfield;
+int serverlist_sortflags;
+
+int serverlist_viewcount = 0;
+unsigned short serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
+
+int serverlist_maxcachecount = 0;
+int serverlist_cachecount = 0;
+serverlist_entry_t *serverlist_cache = NULL;
+
+qboolean serverlist_consoleoutput;
+
+static int nFavorites = 0;
+static lhnetaddress_t favorites[MAX_FAVORITESERVERS];
+static int nFavorites_idfp = 0;
+static char favorites_idfp[MAX_FAVORITESERVERS][FP64_SIZE+1];
+
+void NetConn_UpdateFavorites(void)
+{
+ const char *p;
+ nFavorites = 0;
+ nFavorites_idfp = 0;
+ p = net_slist_favorites.string;
+ while((size_t) nFavorites < sizeof(favorites) / sizeof(*favorites) && COM_ParseToken_Console(&p))
+ {
+ if(com_token[0] != '[' && strlen(com_token) == FP64_SIZE && !strchr(com_token, '.'))
+ // currently 44 bytes, longest possible IPv6 address: 39 bytes, so this works
+ // (if v6 address contains port, it must start with '[')
+ {
+ strlcpy(favorites_idfp[nFavorites_idfp], com_token, sizeof(favorites_idfp[nFavorites_idfp]));
+ ++nFavorites_idfp;
+ }
+ else
+ {
+ if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000))
+ ++nFavorites;
+ }
+ }
+}
+
+/// helper function to insert a value into the viewset
+/// spare entries will be removed
+static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
+{
+ int i;
+ if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
+ i = serverlist_viewcount++;
+ } else {
+ i = SERVERLIST_VIEWLISTSIZE - 1;
+ }
+
+ for( ; i > index ; i-- )
+ serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
+
+ serverlist_viewlist[index] = (int)(entry - serverlist_cache);
+}
+
+/// we suppose serverlist_viewcount to be valid, ie > 0
+static void _ServerList_ViewList_Helper_Remove( int index )
+{
+ serverlist_viewcount--;
+ for( ; index < serverlist_viewcount ; index++ )
+ serverlist_viewlist[index] = serverlist_viewlist[index + 1];
+}
+
+/// \returns true if A should be inserted before B
+static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
+{
+ int result = 0; // > 0 if for numbers A > B and for text if A < B
+
+ if( serverlist_sortflags & SLSF_FAVORITESFIRST )
+ {
+ if(A->info.isfavorite != B->info.isfavorite)
+ return A->info.isfavorite;
+ }
+
+ switch( serverlist_sortbyfield ) {
+ case SLIF_PING:
+ result = A->info.ping - B->info.ping;
+ break;
+ case SLIF_MAXPLAYERS:
+ result = A->info.maxplayers - B->info.maxplayers;
+ break;
+ case SLIF_NUMPLAYERS:
+ result = A->info.numplayers - B->info.numplayers;
+ break;
+ case SLIF_NUMBOTS:
+ result = A->info.numbots - B->info.numbots;
+ break;
+ case SLIF_NUMHUMANS:
+ result = A->info.numhumans - B->info.numhumans;
+ break;
+ case SLIF_FREESLOTS:
+ result = A->info.freeslots - B->info.freeslots;
+ break;
+ case SLIF_PROTOCOL:
+ result = A->info.protocol - B->info.protocol;
+ break;
+ case SLIF_CNAME:
+ result = strcmp( B->info.cname, A->info.cname );
+ break;
+ case SLIF_GAME:
+ result = strcasecmp( B->info.game, A->info.game );
+ break;
+ case SLIF_MAP:
+ result = strcasecmp( B->info.map, A->info.map );
+ break;
+ case SLIF_MOD:
+ result = strcasecmp( B->info.mod, A->info.mod );
+ break;
+ case SLIF_NAME:
+ result = strcasecmp( B->info.name, A->info.name );
+ break;
+ case SLIF_QCSTATUS:
+ result = strcasecmp( B->info.qcstatus, A->info.qcstatus ); // not really THAT useful, though
+ break;
+ case SLIF_ISFAVORITE:
+ result = !!B->info.isfavorite - !!A->info.isfavorite;
+ break;
+ default:
+ Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
+ break;
+ }
+
+ if (result != 0)
+ {
+ if( serverlist_sortflags & SLSF_DESCENDING )
+ return result > 0;
+ else
+ return result < 0;
+ }
+
+ // if the chosen sort key is identical, sort by index
+ // (makes this a stable sort, so that later replies from servers won't
+ // shuffle the servers around when they have the same ping)
+ return A < B;
+}
+
+static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
+{
+ // This should actually be done with some intermediate and end-of-function return
+ switch( op ) {
+ case SLMO_LESS:
+ return A < B;
+ case SLMO_LESSEQUAL:
+ return A <= B;
+ case SLMO_EQUAL:
+ return A == B;
+ case SLMO_GREATER:
+ return A > B;
+ case SLMO_NOTEQUAL:
+ return A != B;
+ case SLMO_GREATEREQUAL:
+ case SLMO_CONTAINS:
+ case SLMO_NOTCONTAIN:
+ case SLMO_STARTSWITH:
+ case SLMO_NOTSTARTSWITH:
+ return A >= B;
+ default:
+ Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
+ return false;
+ }
+}
+
+static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
+{
+ int i;
+ char bufferA[ 1400 ], bufferB[ 1400 ]; // should be more than enough
+ COM_StringDecolorize(A, 0, bufferA, sizeof(bufferA), false);
+ for (i = 0;i < (int)sizeof(bufferA)-1 && bufferA[i];i++)
+ bufferA[i] = (bufferA[i] >= 'A' && bufferA[i] <= 'Z') ? (bufferA[i] + 'a' - 'A') : bufferA[i];
+ bufferA[i] = 0;
+ for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
+ bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
+ bufferB[i] = 0;
+
+ // Same here, also using an intermediate & final return would be more appropriate
+ // A info B mask
+ switch( op ) {
+ case SLMO_CONTAINS:
+ return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
+ case SLMO_NOTCONTAIN:
+ return !*bufferB || !strstr( bufferA, bufferB );
+ case SLMO_STARTSWITH:
+ //Con_Printf("startsWith: %s %s\n", bufferA, bufferB);
+ return *bufferB && !memcmp(bufferA, bufferB, strlen(bufferB));
+ case SLMO_NOTSTARTSWITH:
+ return !*bufferB || memcmp(bufferA, bufferB, strlen(bufferB));
+ case SLMO_LESS:
+ return strcmp( bufferA, bufferB ) < 0;
+ case SLMO_LESSEQUAL:
+ return strcmp( bufferA, bufferB ) <= 0;
+ case SLMO_EQUAL:
+ return strcmp( bufferA, bufferB ) == 0;
+ case SLMO_GREATER:
+ return strcmp( bufferA, bufferB ) > 0;
+ case SLMO_NOTEQUAL:
+ return strcmp( bufferA, bufferB ) != 0;
+ case SLMO_GREATEREQUAL:
+ return strcmp( bufferA, bufferB ) >= 0;
+ default:
+ Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
+ return false;
+ }
+}
+
+static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
+{
+ if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
+ return false;
+ if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
+ return false;
+ if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
+ return false;
+ if( !_ServerList_CompareInt( info->numbots, mask->tests[SLIF_NUMBOTS], mask->info.numbots ) )
+ return false;
+ if( !_ServerList_CompareInt( info->numhumans, mask->tests[SLIF_NUMHUMANS], mask->info.numhumans ) )
+ return false;
+ if( !_ServerList_CompareInt( info->freeslots, mask->tests[SLIF_FREESLOTS], mask->info.freeslots ) )
+ return false;
+ if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
+ return false;
+ if( *mask->info.cname
+ && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
+ return false;
+ if( *mask->info.game
+ && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
+ return false;
+ if( *mask->info.mod
+ && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
+ return false;
+ if( *mask->info.map
+ && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
+ return false;
+ if( *mask->info.name
+ && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
+ return false;
+ if( *mask->info.qcstatus
+ && !_ServerList_CompareStr( info->qcstatus, mask->tests[SLIF_QCSTATUS], mask->info.qcstatus ) )
+ return false;
+ if( *mask->info.players
+ && !_ServerList_CompareStr( info->players, mask->tests[SLIF_PLAYERS], mask->info.players ) )
+ return false;
+ if( !_ServerList_CompareInt( info->isfavorite, mask->tests[SLIF_ISFAVORITE], mask->info.isfavorite ))
+ return false;
+ return true;
+}
+
+static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
+{
+ int start, end, mid, i;
+ lhnetaddress_t addr;
+
+ // reject incompatible servers
+ if(
+ entry->info.gameversion != gameversion.integer
+ &&
+ !(
+ gameversion_min.integer >= 0 // min/max range set by user/mod?
+ && gameversion_max.integer >= 0
+ && gameversion_min.integer >= entry->info.gameversion // version of server in min/max range?
+ && gameversion_max.integer <= entry->info.gameversion
+ )
+ )
+ return;
+
+ // refresh the "favorite" status
+ entry->info.isfavorite = false;
+ if(LHNETADDRESS_FromString(&addr, entry->info.cname, 26000))
+ {
+ char idfp[FP64_SIZE+1];
+ for(i = 0; i < nFavorites; ++i)
+ {
+ if(LHNETADDRESS_Compare(&addr, &favorites[i]) == 0)
+ {
+ entry->info.isfavorite = true;
+ break;
+ }
+ }
+ if(Crypto_RetrieveHostKey(&addr, 0, NULL, 0, idfp, sizeof(idfp), NULL))
+ {
+ for(i = 0; i < nFavorites_idfp; ++i)
+ {
+ if(!strcmp(idfp, favorites_idfp[i]))
+ {
+ entry->info.isfavorite = true;
+ break;
+ }
+ }
+ }
+ }
+
+ // FIXME: change this to be more readable (...)
+ // now check whether it passes through the masks
+ for( start = 0 ; start < SERVERLIST_ANDMASKCOUNT && serverlist_andmasks[start].active; start++ )
+ if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
+ return;
+
+ for( start = 0 ; start < SERVERLIST_ORMASKCOUNT && serverlist_ormasks[start].active ; start++ )
+ if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
+ break;
+ if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
+ return;
+
+ if( !serverlist_viewcount ) {
+ _ServerList_ViewList_Helper_InsertBefore( 0, entry );
+ return;
+ }
+ // ok, insert it, we just need to find out where exactly:
+
+ // two special cases
+ // check whether to insert it as new first item
+ if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(0) ) ) {
+ _ServerList_ViewList_Helper_InsertBefore( 0, entry );
+ return;
+ } // check whether to insert it as new last item
+ else if( !_ServerList_Entry_Compare( entry, ServerList_GetViewEntry(serverlist_viewcount - 1) ) ) {
+ _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
+ return;
+ }
+ start = 0;
+ end = serverlist_viewcount - 1;
+ while( end > start + 1 )
+ {
+ mid = (start + end) / 2;
+ // test the item that lies in the middle between start and end
+ if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(mid) ) )
+ // the item has to be in the upper half
+ end = mid;
+ else
+ // the item has to be in the lower half
+ start = mid;
+ }
+ _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
+}
+
+static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
+{
+ int i;
+ for( i = 0; i < serverlist_viewcount; i++ )
+ {
+ if (ServerList_GetViewEntry(i) == entry)
+ {
+ _ServerList_ViewList_Helper_Remove(i);
+ break;
+ }
+ }
+}
+
+void ServerList_RebuildViewList(void)
+{
+ int i;
+
+ serverlist_viewcount = 0;
+ for( i = 0 ; i < serverlist_cachecount ; i++ ) {
+ serverlist_entry_t *entry = &serverlist_cache[i];
+ // also display entries that are currently being refreshed [11/8/2007 Black]
+ if( entry->query == SQS_QUERIED || entry->query == SQS_REFRESHING )
+ ServerList_ViewList_Insert( entry );
+ }
+}
+
+void ServerList_ResetMasks(void)
+{
+ int i;
+
+ memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
+ memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
+ // numbots needs to be compared to -1 to always succeed
+ for(i = 0; i < SERVERLIST_ANDMASKCOUNT; ++i)
+ serverlist_andmasks[i].info.numbots = -1;
+ for(i = 0; i < SERVERLIST_ORMASKCOUNT; ++i)
+ serverlist_ormasks[i].info.numbots = -1;
+}
+
+void ServerList_GetPlayerStatistics(int *numplayerspointer, int *maxplayerspointer)
+{
+ int i;
+ int numplayers = 0, maxplayers = 0;
+ for (i = 0;i < serverlist_cachecount;i++)
+ {
+ if (serverlist_cache[i].query == SQS_QUERIED)
+ {
+ numplayers += serverlist_cache[i].info.numhumans;
+ maxplayers += serverlist_cache[i].info.maxplayers;
+ }
+ }
+ *numplayerspointer = numplayers;
+ *maxplayerspointer = maxplayers;
+}
+
+#if 0
+static void _ServerList_Test(void)
+{
+ int i;
+ if (serverlist_maxcachecount <= 1024)
+ {
+ serverlist_maxcachecount = 1024;
+ serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
+ }
+ for( i = 0 ; i < 1024 ; i++ ) {
+ memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
+ serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
+ dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
+ serverlist_cache[serverlist_cachecount].finished = true;
+ 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 );
+ ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
+ serverlist_cachecount++;
+ }
+}
+#endif
+
+void ServerList_QueryList(qboolean resetcache, qboolean querydp, qboolean queryqw, qboolean consoleoutput)
+{
+ masterquerytime = realtime;
+ masterquerycount = 0;
+ masterreplycount = 0;
+ if( resetcache ) {
+ serverquerycount = 0;
+ serverreplycount = 0;
+ serverlist_cachecount = 0;
+ serverlist_viewcount = 0;
+ serverlist_maxcachecount = 0;
+ serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
+ } else {
+ // refresh all entries
+ int n;
+ for( n = 0 ; n < serverlist_cachecount ; n++ ) {
+ serverlist_entry_t *entry = &serverlist_cache[ n ];
+ entry->query = SQS_REFRESHING;
+ entry->querycounter = 0;
+ }
+ }
+ serverlist_consoleoutput = consoleoutput;
+
+ //_ServerList_Test();
+
+ NetConn_QueryMasters(querydp, queryqw);
+}
+
+// rest
+
+int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
+{
+ int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
+ int i;
+ if (length == 0)
+ return 0;
+ if (cl_netpacketloss_receive.integer)
+ for (i = 0;i < cl_numsockets;i++)
+ if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_receive.integer)
+ return 0;
+ if (developer_networking.integer)
+ {
+ char addressstring[128], addressstring2[128];
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
+ if (length > 0)
+ {
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length, addressstring2);
+ Com_HexDumpToConsole((unsigned char *)data, length);
+ }
+ else
+ Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length);
+ }
+ return length;
+}
+
+int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
+{
+ int ret;
+ int i;
+ if (cl_netpacketloss_send.integer)
+ for (i = 0;i < cl_numsockets;i++)
+ if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_send.integer)
+ return length;
+ ret = LHNET_Write(mysocket, data, length, peeraddress);
+ if (developer_networking.integer)
+ {
+ char addressstring[128], addressstring2[128];
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ 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)");
+ Com_HexDumpToConsole((unsigned char *)data, length);
+ }
+ return ret;
+}
+
+int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
+{
+ // note this does not include the trailing NULL because we add that in the parser
+ return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
+}
+
+qboolean NetConn_CanSend(netconn_t *conn)
+{
+ conn->outgoing_packetcounter = (conn->outgoing_packetcounter + 1) % NETGRAPH_PACKETS;
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].time = realtime;
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes = NETGRAPH_NOPACKET;
+ if (realtime > conn->cleartime)
+ return true;
+ else
+ {
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_CHOKEDPACKET;
+ return false;
+ }
+}
+
+int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol, int rate, qboolean quakesignon_suppressreliables)
+{
+ int totallen = 0;
+
+ // if this packet was supposedly choked, but we find ourselves sending one
+ // anyway, make sure the size counting starts at zero
+ // (this mostly happens on level changes and disconnects and such)
+ if (conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes == NETGRAPH_CHOKEDPACKET)
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
+
+ if (protocol == PROTOCOL_QUAKEWORLD)
+ {
+ int packetLen;
+ qboolean sendreliable;
+
+ // note that it is ok to send empty messages to the qw server,
+ // otherwise it won't respond to us at all
+
+ sendreliable = false;
+ // if the remote side dropped the last reliable message, resend it
+ if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
+ sendreliable = true;
+ // if the reliable transmit buffer is empty, copy the current message out
+ if (!conn->sendMessageLength && conn->message.cursize)
+ {
+ memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
+ conn->sendMessageLength = conn->message.cursize;
+ SZ_Clear(&conn->message); // clear the message buffer
+ conn->qw.reliable_sequence ^= 1;
+ sendreliable = true;
+ }
+ // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
+ StoreLittleLong(sendbuffer, (unsigned int)conn->outgoing_unreliable_sequence | ((unsigned int)sendreliable<<31));
+ // last received unreliable packet number, and last received reliable packet number (0 or 1)
+ StoreLittleLong(sendbuffer + 4, (unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
+ packetLen = 8;
+ conn->outgoing_unreliable_sequence++;
+ // client sends qport in every packet
+ if (conn == cls.netcon)
+ {
+ *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
+ packetLen += 2;
+ // also update cls.qw_outgoing_sequence
+ cls.qw_outgoing_sequence = conn->outgoing_unreliable_sequence;
+ }
+ if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
+ {
+ Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
+ return -1;
+ }
+
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
+
+ // add the reliable message if there is one
+ if (sendreliable)
+ {
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += conn->sendMessageLength + 28;
+ memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
+ packetLen += conn->sendMessageLength;
+ conn->qw.last_reliable_sequence = conn->outgoing_unreliable_sequence;
+ }
+
+ // add the unreliable message if possible
+ if (packetLen + data->cursize <= 1400)
+ {
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += data->cursize + 28;
+ memcpy(sendbuffer + packetLen, data->data, data->cursize);
+ packetLen += data->cursize;
+ }
+
+ NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
+
+ packetsSent++;
+ unreliableMessagesSent++;
+
+ totallen += packetLen + 28;
+ }
+ else
+ {
+ unsigned int packetLen;
+ unsigned int dataLen;
+ unsigned int eom;
+ const void *sendme;
+ size_t sendmelen;
+
+ // if a reliable message fragment has been lost, send it again
+ if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
+ {
+ if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
+ {
+ dataLen = conn->sendMessageLength;
+ eom = NETFLAG_EOM;
+ }
+ else
+ {
+ dataLen = MAX_PACKETFRAGMENT;
+ eom = 0;
+ }
+
+ packetLen = NET_HEADERSIZE + dataLen;
+
+ StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
+ StoreBigLong(sendbuffer + 4, conn->nq.sendSequence - 1);
+ memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
+
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
+
+ sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
+ if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
+ {
+ conn->lastSendTime = realtime;
+ packetsReSent++;
+ }
+
+ totallen += sendmelen + 28;
+ }
+
+ // if we have a new reliable message to send, do so
+ if (!conn->sendMessageLength && conn->message.cursize && !quakesignon_suppressreliables)
+ {
+ if (conn->message.cursize > (int)sizeof(conn->sendMessage))
+ {
+ Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
+ conn->message.overflowed = true;
+ return -1;
+ }
+
+ if (developer_networking.integer && conn == cls.netcon)
+ {
+ Con_Print("client sending reliable message to server:\n");
+ SZ_HexDumpToConsole(&conn->message);
+ }
+
+ memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
+ conn->sendMessageLength = conn->message.cursize;
+ SZ_Clear(&conn->message);
+
+ if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
+ {
+ dataLen = conn->sendMessageLength;
+ eom = NETFLAG_EOM;
+ }
+ else
+ {
+ dataLen = MAX_PACKETFRAGMENT;
+ eom = 0;
+ }
+
+ packetLen = NET_HEADERSIZE + dataLen;
+
+ StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
+ StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
+ memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
+
+ conn->nq.sendSequence++;
+
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
+
+ sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
+ if(sendme)
+ NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
+
+ conn->lastSendTime = realtime;
+ packetsSent++;
+ reliableMessagesSent++;
+
+ totallen += sendmelen + 28;
+ }
+
+ // if we have an unreliable message to send, do so
+ if (data->cursize)
+ {
+ packetLen = NET_HEADERSIZE + data->cursize;
+
+ if (packetLen > (int)sizeof(sendbuffer))
+ {
+ Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
+ return -1;
+ }
+
+ StoreBigLong(sendbuffer, packetLen | NETFLAG_UNRELIABLE);
+ StoreBigLong(sendbuffer + 4, conn->outgoing_unreliable_sequence);
+ memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
+
+ conn->outgoing_unreliable_sequence++;
+
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
+
+ sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
+ if(sendme)
+ NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
+
+ packetsSent++;
+ unreliableMessagesSent++;
+
+ totallen += sendmelen + 28;
+ }
+ }
+
+ // delay later packets to obey rate limit
+ if (conn->cleartime < realtime - 0.1)
+ conn->cleartime = realtime - 0.1;
+ conn->cleartime = conn->cleartime + (double)totallen / (double)rate;
+ if (conn->cleartime < realtime)
+ conn->cleartime = realtime;
+
+ return 0;
+}
+
+qboolean NetConn_HaveClientPorts(void)
+{
+ return !!cl_numsockets;
+}
+
+qboolean NetConn_HaveServerPorts(void)
+{
+ return !!sv_numsockets;
+}
+
+void NetConn_CloseClientPorts(void)
+{
+ for (;cl_numsockets > 0;cl_numsockets--)
+ if (cl_sockets[cl_numsockets - 1])
+ LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
+}
+
+void NetConn_OpenClientPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport)
+{
+ lhnetaddress_t address;
+ lhnetsocket_t *s;
+ int success;
+ char addressstring2[1024];
+ if (addressstring && addressstring[0])
+ success = LHNETADDRESS_FromString(&address, addressstring, defaultport);
+ else
+ success = LHNETADDRESS_FromPort(&address, addresstype, defaultport);
+ if (success)
+ {
+ if ((s = LHNET_OpenSocket_Connectionless(&address)))
+ {
+ cl_sockets[cl_numsockets++] = s;
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
+ if (addresstype != LHNETADDRESSTYPE_LOOP)
+ Con_Printf("Client opened a socket on address %s\n", addressstring2);
+ }
+ else
+ {
+ LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
+ }
+ }
+ else
+ Con_Printf("Client unable to parse address %s\n", addressstring);
+}
+
+void NetConn_OpenClientPorts(void)
+{
+ int port;
+ NetConn_CloseClientPorts();
+ port = bound(0, cl_netport.integer, 65535);
+ if (cl_netport.integer != port)
+ Cvar_SetValueQuick(&cl_netport, port);
+ if(port == 0)
+ Con_Printf("Client using an automatically assigned port\n");
+ else
+ Con_Printf("Client using port %i\n", port);
+ NetConn_OpenClientPort(NULL, LHNETADDRESSTYPE_LOOP, 2);
+ NetConn_OpenClientPort(net_address.string, LHNETADDRESSTYPE_INET4, port);
+#ifdef SUPPORTIPV6
+ NetConn_OpenClientPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port);
+#endif
+}
+
+void NetConn_CloseServerPorts(void)
+{
+ for (;sv_numsockets > 0;sv_numsockets--)
+ if (sv_sockets[sv_numsockets - 1])
+ LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
+}
+
+qboolean NetConn_OpenServerPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport, int range)
+{
+ lhnetaddress_t address;
+ lhnetsocket_t *s;
+ int port;
+ char addressstring2[1024];
+ int success;
+
+ for (port = defaultport; port <= defaultport + range; port++)
+ {
+ if (addressstring && addressstring[0])
+ success = LHNETADDRESS_FromString(&address, addressstring, port);
+ else
+ success = LHNETADDRESS_FromPort(&address, addresstype, port);
+ if (success)
+ {
+ if ((s = LHNET_OpenSocket_Connectionless(&address)))
+ {
+ sv_sockets[sv_numsockets++] = s;
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
+ if (addresstype != LHNETADDRESSTYPE_LOOP)
+ Con_Printf("Server listening on address %s\n", addressstring2);
+ return true;
+ }
+ else
+ {
+ LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("Server failed to open socket on address %s\n", addressstring2);
+ }
+ }
+ else
+ {
+ Con_Printf("Server unable to parse address %s\n", addressstring);
+ // if it cant parse one address, it wont be able to parse another for sure
+ return false;
+ }
+ }
+ return false;
+}
+
+void NetConn_OpenServerPorts(int opennetports)
+{
+ int port;
+ NetConn_CloseServerPorts();
+ NetConn_UpdateSockets();
+ port = bound(0, sv_netport.integer, 65535);
+ if (port == 0)
+ port = 26000;
+ Con_Printf("Server using port %i\n", port);
+ if (sv_netport.integer != port)
+ Cvar_SetValueQuick(&sv_netport, port);
+ if (cls.state != ca_dedicated)
+ NetConn_OpenServerPort(NULL, LHNETADDRESSTYPE_LOOP, 1, 1);
+ if (opennetports)
+ {
+#ifdef SUPPORTIPV6
+ qboolean ip4success = NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
+ NetConn_OpenServerPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port, ip4success ? 1 : 100);
+#else
+ NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
+#endif
+ }
+ if (sv_numsockets == 0)
+ Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
+}
+
+lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
+{
+ int i, a = LHNETADDRESS_GetAddressType(address);
+ for (i = 0;i < cl_numsockets;i++)
+ if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
+ return cl_sockets[i];
+ return NULL;
+}
+
+lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
+{
+ int i, a = LHNETADDRESS_GetAddressType(address);
+ for (i = 0;i < sv_numsockets;i++)
+ if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
+ return sv_sockets[i];
+ return NULL;
+}
+
+netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
+{
+ netconn_t *conn;
+ conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
+ conn->mysocket = mysocket;
+ conn->peeraddress = *peeraddress;
+ conn->lastMessageTime = realtime;
+ conn->message.data = conn->messagedata;
+ conn->message.maxsize = sizeof(conn->messagedata);
+ conn->message.cursize = 0;
+ // LordHavoc: (inspired by ProQuake) use a short connect timeout to
+ // reduce effectiveness of connection request floods
+ conn->timeout = realtime + net_connecttimeout.value;
+ LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
+ conn->next = netconn_list;
+ netconn_list = conn;
+ return conn;
+}
+
+void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
+void NetConn_Close(netconn_t *conn)
+{
+ netconn_t *c;
+ // remove connection from list
+
+ // allow the client to reconnect immediately
+ NetConn_ClearConnectFlood(&(conn->peeraddress));
+
+ if (conn == netconn_list)
+ netconn_list = conn->next;
+ else
+ {
+ for (c = netconn_list;c;c = c->next)
+ {
+ if (c->next == conn)
+ {
+ c->next = conn->next;
+ break;
+ }
+ }
+ // not found in list, we'll avoid crashing here...
+ if (!c)
+ return;
+ }
+ // free connection
+ Mem_Free(conn);
+}
+
+static int clientport = -1;
+static int clientport2 = -1;
+static int hostport = -1;
+void NetConn_UpdateSockets(void)
+{
+ int i, j;
+
+ if (cls.state != ca_dedicated)
+ {
+ if (clientport2 != cl_netport.integer)
+ {
+ clientport2 = cl_netport.integer;
+ if (cls.state == ca_connected)
+ Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
+ }
+ if (cls.state == ca_disconnected && clientport != clientport2)
+ {
+ clientport = clientport2;
+ NetConn_CloseClientPorts();
+ }
+ if (cl_numsockets == 0)
+ NetConn_OpenClientPorts();
+ }
+
+ if (hostport != sv_netport.integer)
+ {
+ hostport = sv_netport.integer;
+ if (sv.active)
+ Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
+ }
+
+ for (j = 0;j < MAX_RCONS;j++)
+ {
+ i = (cls.rcon_ringpos + j + 1) % MAX_RCONS;
+ if(cls.rcon_commands[i][0])
+ {
+ if(realtime > cls.rcon_timeout[i])
+ {
+ char s[128];
+ LHNETADDRESS_ToString(&cls.rcon_addresses[i], s, sizeof(s), true);
+ Con_Printf("rcon to %s (for command %s) failed: challenge request timed out\n", s, cls.rcon_commands[i]);
+ cls.rcon_commands[i][0] = 0;
+ --cls.rcon_trying;
+ break;
+ }
+ }
+ }
+}
+
+static int NetConn_ReceivedMessage(netconn_t *conn, const unsigned char *data, size_t length, protocolversion_t protocol, double newtimeout)
+{
+ int originallength = length;
+ if (length < 8)
+ return 0;
+
+ if (protocol == PROTOCOL_QUAKEWORLD)
+ {
+ int sequence, sequence_ack;
+ int reliable_ack, reliable_message;
+ int count;
+ //int qport;
+
+ sequence = LittleLong(*((int *)(data + 0)));
+ sequence_ack = LittleLong(*((int *)(data + 4)));
+ data += 8;
+ length -= 8;
+
+ if (conn != cls.netcon)
+ {
+ // server only
+ if (length < 2)
+ return 0;
+ // 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?)
+ //qport = LittleShort(*((int *)(data + 8)));
+ data += 2;
+ length -= 2;
+ }
+
+ packetsReceived++;
+ reliable_message = (sequence >> 31) & 1;
+ reliable_ack = (sequence_ack >> 31) & 1;
+ sequence &= ~(1<<31);
+ sequence_ack &= ~(1<<31);
+ if (sequence <= conn->qw.incoming_sequence)
+ {
+ //Con_DPrint("Got a stale datagram\n");
+ return 0;
+ }
+ count = sequence - (conn->qw.incoming_sequence + 1);
+ if (count > 0)
+ {
+ droppedDatagrams += count;
+ //Con_DPrintf("Dropped %u datagram(s)\n", count);
+ while (count--)
+ {
+ conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
+ conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
+ conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
+ conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
+ conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
+ }
+ }
+ conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
+ conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
+ conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
+ conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
+ conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
+ if (reliable_ack == conn->qw.reliable_sequence)
+ {
+ // received, now we will be able to send another reliable message
+ conn->sendMessageLength = 0;
+ reliableMessagesReceived++;
+ }
+ conn->qw.incoming_sequence = sequence;
+ if (conn == cls.netcon)
+ cls.qw_incoming_sequence = conn->qw.incoming_sequence;
+ conn->qw.incoming_acknowledged = sequence_ack;
+ conn->qw.incoming_reliable_acknowledged = reliable_ack;
+ if (reliable_message)
+ conn->qw.incoming_reliable_sequence ^= 1;
+ conn->lastMessageTime = realtime;
+ conn->timeout = realtime + newtimeout;
+ unreliableMessagesReceived++;
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, data, length);
+ MSG_BeginReading();
+ return 2;
+ }
+ else
+ {
+ unsigned int count;
+ unsigned int flags;
+ unsigned int sequence;
+ size_t qlength;
+ const void *sendme;
+ size_t sendmelen;
+
+ originallength = length;
+ data = (const unsigned char *) Crypto_DecryptPacket(&conn->crypto, data, length, cryptoreadbuffer, &length, sizeof(cryptoreadbuffer));
+ if(!data)
+ return 0;
+ if(length < 8)
+ return 0;
+
+ qlength = (unsigned int)BuffBigLong(data);
+ flags = qlength & ~NETFLAG_LENGTH_MASK;
+ qlength &= NETFLAG_LENGTH_MASK;
+ // control packets were already handled
+ if (!(flags & NETFLAG_CTL) && qlength == length)
+ {
+ sequence = BuffBigLong(data + 4);
+ packetsReceived++;
+ data += 8;
+ length -= 8;
+ if (flags & NETFLAG_UNRELIABLE)
+ {
+ if (sequence >= conn->nq.unreliableReceiveSequence)
+ {
+ if (sequence > conn->nq.unreliableReceiveSequence)
+ {
+ count = sequence - conn->nq.unreliableReceiveSequence;
+ droppedDatagrams += count;
+ //Con_DPrintf("Dropped %u datagram(s)\n", count);
+ while (count--)
+ {
+ conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
+ conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
+ conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
+ conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
+ conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
+ }
+ }
+ conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
+ conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
+ conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
+ conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
+ conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
+ conn->nq.unreliableReceiveSequence = sequence + 1;
+ conn->lastMessageTime = realtime;
+ conn->timeout = realtime + newtimeout;
+ unreliableMessagesReceived++;
+ if (length > 0)
+ {
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, data, length);
+ MSG_BeginReading();
+ return 2;
+ }
+ }
+ //else
+ // Con_DPrint("Got a stale datagram\n");
+ return 1;
+ }
+ else if (flags & NETFLAG_ACK)
+ {
+ conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes += originallength + 28;
+ if (sequence == (conn->nq.sendSequence - 1))
+ {
+ if (sequence == conn->nq.ackSequence)
+ {
+ conn->nq.ackSequence++;
+ if (conn->nq.ackSequence != conn->nq.sendSequence)
+ Con_DPrint("ack sequencing error\n");
+ conn->lastMessageTime = realtime;
+ conn->timeout = realtime + newtimeout;
+ if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
+ {
+ unsigned int packetLen;
+ unsigned int dataLen;
+ unsigned int eom;
+
+ conn->sendMessageLength -= MAX_PACKETFRAGMENT;
+ memmove(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
+
+ if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
+ {
+ dataLen = conn->sendMessageLength;
+ eom = NETFLAG_EOM;
+ }
+ else
+ {
+ dataLen = MAX_PACKETFRAGMENT;
+ eom = 0;
+ }
+
+ packetLen = NET_HEADERSIZE + dataLen;
+
+ StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom));
+ StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
+ memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
+
+ conn->nq.sendSequence++;
+
+ sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
+ if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen)
+ {
+ conn->lastSendTime = realtime;
+ packetsSent++;
+ }
+ }
+ else
+ conn->sendMessageLength = 0;
+ }
+ //else
+ // Con_DPrint("Duplicate ACK received\n");
+ }
+ //else
+ // Con_DPrint("Stale ACK received\n");
+ return 1;
+ }
+ else if (flags & NETFLAG_DATA)
+ {
+ unsigned char temppacket[8];
+ conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes += originallength + 28;
+ conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes += 8 + 28;
+ StoreBigLong(temppacket, 8 | NETFLAG_ACK);
+ StoreBigLong(temppacket + 4, sequence);
+ sendme = Crypto_EncryptPacket(&conn->crypto, temppacket, 8, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
+ if(sendme)
+ NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress);
+ if (sequence == conn->nq.receiveSequence)
+ {
+ conn->lastMessageTime = realtime;
+ conn->timeout = realtime + newtimeout;
+ conn->nq.receiveSequence++;
+ if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
+ memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
+ conn->receiveMessageLength += length;
+ } else {
+ Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
+ "Dropping the message!\n", sequence );
+ conn->receiveMessageLength = 0;
+ return 1;
+ }
+ if (flags & NETFLAG_EOM)
+ {
+ reliableMessagesReceived++;
+ length = conn->receiveMessageLength;
+ conn->receiveMessageLength = 0;
+ if (length > 0)
+ {
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, conn->receiveMessage, length);
+ MSG_BeginReading();
+ return 2;
+ }
+ }
+ }
+ else
+ receivedDuplicateCount++;
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
+{
+ crypto_t *crypto;
+ cls.connect_trying = false;
+ M_Update_Return_Reason("");
+ // the connection request succeeded, stop current connection and set up a new connection
+ CL_Disconnect();
+ // if we're connecting to a remote server, shut down any local server
+ if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
+ Host_ShutdownServer ();
+ // allocate a net connection to keep track of things
+ cls.netcon = NetConn_Open(mysocket, peeraddress);
+ crypto = &cls.crypto;
+ if(crypto && crypto->authenticated)
+ {
+ Crypto_ServerFinishInstance(&cls.netcon->crypto, crypto);
+ Con_Printf("%s connection to %s has been established: server is %s@%.*s, I am %.*s@%.*s\n",
+ crypto->use_aes ? "Encrypted" : "Authenticated",
+ cls.netcon->address,
+ crypto->server_idfp[0] ? crypto->server_idfp : "-",
+ crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-",
+ crypto_keyfp_recommended_length, crypto->client_idfp[0] ? crypto->client_idfp : "-",
+ crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-"
+ );
+ }
+ Con_Printf("Connection accepted to %s\n", cls.netcon->address);
+ key_dest = key_game;
+ m_state = m_none;
+ cls.demonum = -1; // not in the demo loop now
+ cls.state = ca_connected;
+ cls.signon = 0; // need all the signon messages before playing
+ cls.protocol = initialprotocol;
+ // reset move sequence numbering on this new connection
+ cls.servermovesequence = 0;
+ if (cls.protocol == PROTOCOL_QUAKEWORLD)
+ Cmd_ForwardStringToServer("new");
+ if (cls.protocol == PROTOCOL_QUAKE)
+ {
+ // write a keepalive (clc_nop) as it seems to greatly improve the
+ // chances of connecting to a netquake server
+ sizebuf_t msg;
+ unsigned char buf[4];
+ memset(&msg, 0, sizeof(msg));
+ msg.data = buf;
+ msg.maxsize = sizeof(buf);
+ MSG_WriteChar(&msg, clc_nop);
+ NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000, false);
+ }
+}
+
+int NetConn_IsLocalGame(void)
+{
+ if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
+ return true;
+ return false;
+}
+
+static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
+{
+ int n;
+ int pingtime;
+ serverlist_entry_t *entry = NULL;
+
+ // search the cache for this server and update it
+ for (n = 0;n < serverlist_cachecount;n++) {
+ entry = &serverlist_cache[ n ];
+ if (!strcmp(addressstring, entry->info.cname))
+ break;
+ }
+
+ if (n == serverlist_cachecount)
+ {
+ // LAN search doesnt require an answer from the master server so we wont
+ // know the ping nor will it be initialized already...
+
+ // find a slot
+ if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
+ return -1;
+
+ if (serverlist_maxcachecount <= serverlist_cachecount)
+ {
+ serverlist_maxcachecount += 64;
+ serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
+ }
+ entry = &serverlist_cache[n];
+
+ memset(entry, 0, sizeof(*entry));
+ // store the data the engine cares about (address and ping)
+ strlcpy(entry->info.cname, addressstring, sizeof(entry->info.cname));
+ entry->info.ping = 100000;
+ entry->querytime = realtime;
+ // if not in the slist menu we should print the server to console
+ if (serverlist_consoleoutput)
+ Con_Printf("querying %s\n", addressstring);
+ ++serverlist_cachecount;
+ }
+ // if this is the first reply from this server, count it as having replied
+ pingtime = (int)((realtime - entry->querytime) * 1000.0 + 0.5);
+ pingtime = bound(0, pingtime, 9999);
+ if (entry->query == SQS_REFRESHING) {
+ entry->info.ping = pingtime;
+ entry->query = SQS_QUERIED;
+ } else {
+ // convert to unsigned to catch the -1
+ // 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]
+ entry->info.ping = min((unsigned) entry->info.ping, (unsigned) pingtime);
+ serverreplycount++;
+ }
+
+ // other server info is updated by the caller
+ return n;
+}
+
+static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
+{
+ serverlist_entry_t *entry = &serverlist_cache[n];
+ serverlist_info_t *info = &entry->info;
+ // update description strings for engine menu and console output
+ 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);
+ dpsnprintf(entry->line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game,
+ (
+ info->gameversion != gameversion.integer
+ &&
+ !(
+ gameversion_min.integer >= 0 // min/max range set by user/mod?
+ && gameversion_max.integer >= 0
+ && gameversion_min.integer >= info->gameversion // version of server in min/max range?
+ && gameversion_max.integer <= info->gameversion
+ )
+ ) ? '1' : '4',
+ info->mod, info->map);
+ if (entry->query == SQS_QUERIED)
+ {
+ if(!serverlist_paused)
+ ServerList_ViewList_Remove(entry);
+ }
+ // if not in the slist menu we should print the server to console (if wanted)
+ else if( serverlist_consoleoutput )
+ Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
+ // and finally, update the view set
+ if(!serverlist_paused)
+ ServerList_ViewList_Insert( entry );
+ // update the entry's state
+ serverlist_cache[n].query = SQS_QUERIED;
+}
+
+// returns true, if it's sensible to continue the processing
+static qboolean NetConn_ClientParsePacket_ServerList_PrepareQuery( int protocol, const char *ipstring, qboolean isfavorite ) {
+ int n;
+ serverlist_entry_t *entry;
+
+ // ignore the rest of the message if the serverlist is full
+ if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
+ return false;
+ // also ignore it if we have already queried it (other master server response)
+ for( n = 0 ; n < serverlist_cachecount ; n++ )
+ if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
+ break;
+
+ if( n < serverlist_cachecount ) {
+ // the entry has already been queried once or
+ return true;
+ }
+
+ if (serverlist_maxcachecount <= n)
+ {
+ serverlist_maxcachecount += 64;
+ serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
+ }
+
+ entry = &serverlist_cache[n];
+
+ memset(entry, 0, sizeof(entry));
+ entry->protocol = protocol;
+ // store the data the engine cares about (address and ping)
+ strlcpy (entry->info.cname, ipstring, sizeof(entry->info.cname));
+
+ entry->info.isfavorite = isfavorite;
+
+ // no, then reset the ping right away
+ entry->info.ping = -1;
+ // we also want to increase the serverlist_cachecount then
+ serverlist_cachecount++;
+ serverquerycount++;
+
+ entry->query = SQS_QUERYING;
+
+ return true;
+}
+
+static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *senderaddress, const unsigned char *data, int length, qboolean isextended)
+{
+ masterreplycount++;
+ if (serverlist_consoleoutput)
+ Con_Printf("received DarkPlaces %sserver list...\n", isextended ? "extended " : "");
+ while (length >= 7)
+ {
+ char ipstring [128];
+
+ // IPv4 address
+ if (data[0] == '\\')
+ {
+ unsigned short port = data[5] * 256 + data[6];
+
+ if (port != 0 && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF))
+ dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%hu", data[1], data[2], data[3], data[4], port);
+
+ // move on to next address in packet
+ data += 7;
+ length -= 7;
+ }
+ // IPv6 address
+ else if (data[0] == '/' && isextended && length >= 19)
+ {
+ unsigned short port = data[17] * 256 + data[18];
+
+ if (port != 0)
+ {
+#ifdef WHY_JUST_WHY
+ const char *ifname;
+
+ /// \TODO: make some basic checks of the IP address (broadcast, ...)
+
+ ifname = LHNETADDRESS_GetInterfaceName(senderaddress);
+ if (ifname != NULL)
+ {
+ dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x%%%s]:%hu",
+ (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
+ (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
+ ifname, port);
+ }
+ else
+#endif
+ {
+ dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x]:%hu",
+ (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
+ (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
+ port);
+ }
+ }
+
+ // move on to next address in packet
+ data += 19;
+ length -= 19;
+ }
+ else
+ {
+ Con_Print("Error while parsing the server list\n");
+ break;
+ }
+
+ if (serverlist_consoleoutput && developer_networking.integer)
+ Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
+
+ if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, ipstring, false ) ) {
+ break;
+ }
+
+ }
+
+ // begin or resume serverlist queries
+ serverlist_querysleep = false;
+ serverlist_querywaittime = realtime + 3;
+}
+
+static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
+{
+ qboolean fromserver;
+ int ret, c, control;
+ const char *s;
+ char *string, addressstring2[128], ipstring[32];
+ char stringbuf[16384];
+ char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
+ size_t sendlength;
+
+ // quakeworld ingame packet
+ fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
+
+ // convert the address to a string incase we need it
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+
+ if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
+ {
+ // received a command string - strip off the packaging and put it
+ // into our string buffer with NULL termination
+ data += 4;
+ length -= 4;
+ length = min(length, (int)sizeof(stringbuf) - 1);
+ memcpy(stringbuf, data, length);
+ stringbuf[length] = 0;
+ string = stringbuf;
+
+ if (developer_networking.integer)
+ {
+ Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
+ Com_HexDumpToConsole(data, length);
+ }
+
+ sendlength = sizeof(senddata) - 4;
+ switch(Crypto_ClientParsePacket(string, length, senddata+4, &sendlength, peeraddress))
+ {
+ case CRYPTO_NOMATCH:
+ // nothing to do
+ break;
+ case CRYPTO_MATCH:
+ if(sendlength)
+ {
+ memcpy(senddata, "\377\377\377\377", 4);
+ NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
+ }
+ break;
+ case CRYPTO_DISCARD:
+ if(sendlength)
+ {
+ memcpy(senddata, "\377\377\377\377", 4);
+ NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
+ }
+ return true;
+ break;
+ case CRYPTO_REPLACE:
+ string = senddata+4;
+ length = sendlength;
+ break;
+ }
+
+ if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying)
+ {
+ int i = 0, j;
+ for (j = 0;j < MAX_RCONS;j++)
+ {
+ // note: this value from i is used outside the loop too...
+ i = (cls.rcon_ringpos + j) % MAX_RCONS;
+ if(cls.rcon_commands[i][0])
+ if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[i]))
+ break;
+ }
+ if (j < MAX_RCONS)
+ {
+ char buf[1500];
+ char argbuf[1500];
+ const char *e;
+ int n;
+ dpsnprintf(argbuf, sizeof(argbuf), "%s %s", string + 10, cls.rcon_commands[i]);
+ memcpy(buf, "\377\377\377\377srcon HMAC-MD4 CHALLENGE ", 29);
+
+ e = strchr(rcon_password.string, ' ');
+ n = e ? e-rcon_password.string : (int)strlen(rcon_password.string);
+
+ if(HMAC_MDFOUR_16BYTES((unsigned char *) (buf + 29), (unsigned char *) argbuf, strlen(argbuf), (unsigned char *) rcon_password.string, n))
+ {
+ int k;
+ buf[45] = ' ';
+ strlcpy(buf + 46, argbuf, sizeof(buf) - 46);
+ NetConn_Write(mysocket, buf, 46 + strlen(buf + 46), peeraddress);
+ cls.rcon_commands[i][0] = 0;
+ --cls.rcon_trying;
+
+ for (k = 0;k < MAX_RCONS;k++)
+ if(cls.rcon_commands[k][0])
+ if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[k]))
+ break;
+ if(k < MAX_RCONS)
+ {
+ int l;
+ NetConn_WriteString(mysocket, "\377\377\377\377getchallenge", peeraddress);
+ // extend the timeout on other requests as we asked for a challenge
+ for (l = 0;l < MAX_RCONS;l++)
+ if(cls.rcon_commands[l][0])
+ if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[l]))
+ cls.rcon_timeout[l] = realtime + rcon_secure_challengetimeout.value;
+ }
+
+ return true; // we used up the challenge, so we can't use this oen for connecting now anyway
+ }
+ }
+ }
+ if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
+ {
+ // darkplaces or quake3
+ char protocolnames[1400];
+ Protocol_Names(protocolnames, sizeof(protocolnames));
+ Con_DPrintf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
+ M_Update_Return_Reason("Got challenge response");
+ // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
+ InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
+ // TODO: add userinfo stuff here instead of using NQ commands?
+ NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s%s\\challenge\\%s", protocolnames, cls.connect_userinfo, string + 10), peeraddress);
+ return true;
+ }
+ if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
+ {
+ // darkplaces or quake3
+ M_Update_Return_Reason("Accepted");
+ NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
+ return true;
+ }
+ if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
+ {
+ char rejectreason[128];
+ cls.connect_trying = false;
+ string += 7;
+ length = min(length - 7, (int)sizeof(rejectreason) - 1);
+ memcpy(rejectreason, string, length);
+ rejectreason[length] = 0;
+ M_Update_Return_Reason(rejectreason);
+ return true;
+ }
+ if (length >= 15 && !memcmp(string, "statusResponse\x0A", 15))
+ {
+ serverlist_info_t *info;
+ char *p;
+ int n;
+
+ string += 15;
+ // search the cache for this server and update it
+ n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
+ if (n < 0)
+ return true;
+
+ info = &serverlist_cache[n].info;
+ info->game[0] = 0;
+ info->mod[0] = 0;
+ info->map[0] = 0;
+ info->name[0] = 0;
+ info->qcstatus[0] = 0;
+ info->players[0] = 0;
+ info->protocol = -1;
+ info->numplayers = 0;
+ info->numbots = -1;
+ info->maxplayers = 0;
+ info->gameversion = 0;
+
+ p = strchr(string, '\n');
+ if(p)
+ {
+ *p = 0; // cut off the string there
+ ++p;
+ }
+ else
+ Con_Printf("statusResponse without players block?\n");
+
+ if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));
+ if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
+ if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));
+ if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));
+ if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);
+ if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);
+ if ((s = SearchInfostring(string, "bots" )) != NULL) info->numbots = atoi(s);
+ if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);
+ if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);
+ if ((s = SearchInfostring(string, "qcstatus" )) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
+ if (p != NULL) strlcpy(info->players, p, sizeof(info->players));
+ info->numhumans = info->numplayers - max(0, info->numbots);
+ info->freeslots = info->maxplayers - info->numplayers;
+
+ NetConn_ClientParsePacket_ServerList_UpdateCache(n);
+
+ return true;
+ }
+ if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
+ {
+ serverlist_info_t *info;
+ int n;
+
+ string += 13;
+ // search the cache for this server and update it
+ n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
+ if (n < 0)
+ return true;
+
+ info = &serverlist_cache[n].info;
+ info->game[0] = 0;
+ info->mod[0] = 0;
+ info->map[0] = 0;
+ info->name[0] = 0;
+ info->qcstatus[0] = 0;
+ info->players[0] = 0;
+ info->protocol = -1;
+ info->numplayers = 0;
+ info->numbots = -1;
+ info->maxplayers = 0;
+ info->gameversion = 0;
+
+ if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));
+ if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
+ if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));
+ if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));
+ if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);
+ if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);
+ if ((s = SearchInfostring(string, "bots" )) != NULL) info->numbots = atoi(s);
+ if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);
+ if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);
+ if ((s = SearchInfostring(string, "qcstatus" )) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
+ info->numhumans = info->numplayers - max(0, info->numbots);
+ info->freeslots = info->maxplayers - info->numplayers;
+
+ NetConn_ClientParsePacket_ServerList_UpdateCache(n);
+
+ return true;
+ }
+ if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
+ {
+ // Extract the IP addresses
+ data += 18;
+ length -= 18;
+ NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, false);
+ return true;
+ }
+ if (!strncmp(string, "getserversExtResponse", 21) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
+ {
+ // Extract the IP addresses
+ data += 21;
+ length -= 21;
+ NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, true);
+ return true;
+ }
+ if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
+ {
+ // Extract the IP addresses
+ data += 2;
+ length -= 2;
+ masterreplycount++;
+ if (serverlist_consoleoutput)
+ Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
+ while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
+ {
+ dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
+ if (serverlist_consoleoutput && developer_networking.integer)
+ Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
+
+ if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, ipstring, false ) ) {
+ break;
+ }
+
+ // move on to next address in packet
+ data += 6;
+ length -= 6;
+ }
+ // begin or resume serverlist queries
+ serverlist_querysleep = false;
+ serverlist_querywaittime = realtime + 3;
+ return true;
+ }
+ if (!strncmp(string, "extResponse ", 12))
+ {
+ ++cl_net_extresponse_count;
+ if(cl_net_extresponse_count > NET_EXTRESPONSE_MAX)
+ cl_net_extresponse_count = NET_EXTRESPONSE_MAX;
+ cl_net_extresponse_last = (cl_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
+ dpsnprintf(cl_net_extresponse[cl_net_extresponse_last], sizeof(cl_net_extresponse[cl_net_extresponse_last]), "\"%s\" %s", addressstring2, string + 12);
+ return true;
+ }
+ if (!strncmp(string, "ping", 4))
+ {
+ if (developer_extra.integer)
+ Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
+ return true;
+ }
+ if (!strncmp(string, "ack", 3))
+ return true;
+ // QuakeWorld compatibility
+ if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
+ {
+ // challenge message
+ Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
+ M_Update_Return_Reason("Got QuakeWorld challenge response");
+ cls.qw_qport = qport.integer;
+ // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
+ InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
+ 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);
+ return true;
+ }
+ if (length >= 1 && string[0] == 'j' && cls.connect_trying)
+ {
+ // accept message
+ M_Update_Return_Reason("QuakeWorld Accepted");
+ NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
+ return true;
+ }
+ if (length > 2 && !memcmp(string, "n\\", 2))
+ {
+ serverlist_info_t *info;
+ int n;
+
+ // qw server status
+ if (serverlist_consoleoutput && developer_networking.integer >= 2)
+ Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
+
+ string += 1;
+ // search the cache for this server and update it
+ n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
+ if (n < 0)
+ return true;
+
+ info = &serverlist_cache[n].info;
+ strlcpy(info->game, "QuakeWorld", sizeof(info->game));
+ if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
+ if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
+ if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
+ info->protocol = 0;
+ info->numplayers = 0; // updated below
+ info->numhumans = 0; // updated below
+ if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
+ if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
+
+ // count active players on server
+ // (we could gather more info, but we're just after the number)
+ s = strchr(string, '\n');
+ if (s)
+ {
+ s++;
+ while (s < string + length)
+ {
+ for (;s < string + length && *s != '\n';s++)
+ ;
+ if (s >= string + length)
+ break;
+ info->numplayers++;
+ info->numhumans++;
+ s++;
+ }
+ }
+
+ NetConn_ClientParsePacket_ServerList_UpdateCache(n);
+
+ return true;
+ }
+ if (string[0] == 'n')
+ {
+ // qw print command
+ Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
+ }
+ // we may not have liked the packet, but it was a command packet, so
+ // we're done processing this packet now
+ return true;
+ }
+ // quakeworld ingame packet
+ if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
+ {
+ ret = 0;
+ CL_ParseServerMessage();
+ return ret;
+ }
+ // netquake control packets, supported for compatibility only
+ if (length >= 5 && (control = BuffBigLong(data)) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length && !ENCRYPTION_REQUIRED)
+ {
+ int n;
+ serverlist_info_t *info;
+
+ data += 4;
+ length -= 4;
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, data, length);
+ MSG_BeginReading();
+ c = MSG_ReadByte();
+ switch (c)
+ {
+ case CCREP_ACCEPT:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
+ if (cls.connect_trying)
+ {
+ lhnetaddress_t clientportaddress;
+ clientportaddress = *peeraddress;
+ LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong());
+ // extra ProQuake stuff
+ if (length >= 6)
+ cls.proquake_servermod = MSG_ReadByte(); // MOD_PROQUAKE
+ else
+ cls.proquake_servermod = 0;
+ if (length >= 7)
+ cls.proquake_serverversion = MSG_ReadByte(); // version * 10
+ else
+ cls.proquake_serverversion = 0;
+ if (length >= 8)
+ cls.proquake_serverflags = MSG_ReadByte(); // flags (mainly PQF_CHEATFREE)
+ else
+ cls.proquake_serverflags = 0;
+ if (cls.proquake_servermod == 1)
+ Con_Printf("Connected to ProQuake %.1f server, enabling precise aim\n", cls.proquake_serverversion / 10.0f);
+ // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
+ InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
+ M_Update_Return_Reason("Accepted");
+ NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
+ }
+ break;
+ case CCREP_REJECT:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
+ cls.connect_trying = false;
+ M_Update_Return_Reason((char *)MSG_ReadString());
+ break;
+ case CCREP_SERVER_INFO:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
+ // LordHavoc: because the quake server may report weird addresses
+ // we just ignore it and keep the real address
+ MSG_ReadString();
+ // search the cache for this server and update it
+ n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
+ if (n < 0)
+ break;
+
+ info = &serverlist_cache[n].info;
+ strlcpy(info->game, "Quake", sizeof(info->game));
+ strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
+ strlcpy(info->name, MSG_ReadString(), sizeof(info->name));
+ strlcpy(info->map , MSG_ReadString(), sizeof(info->map));
+ info->numplayers = MSG_ReadByte();
+ info->maxplayers = MSG_ReadByte();
+ info->protocol = MSG_ReadByte();
+
+ NetConn_ClientParsePacket_ServerList_UpdateCache(n);
+
+ break;
+ case CCREP_RCON: // RocketGuy: ProQuake rcon support
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREP_RCON from %s.\n", addressstring2);
+
+ Con_Printf("%s\n", MSG_ReadString());
+ break;
+ case CCREP_PLAYER_INFO:
+ // we got a CCREP_PLAYER_INFO??
+ //if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
+ break;
+ case CCREP_RULE_INFO:
+ // we got a CCREP_RULE_INFO??
+ //if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
+ break;
+ default:
+ break;
+ }
+ SZ_Clear(&net_message);
+ // we may not have liked the packet, but it was a valid control
+ // packet, so we're done processing this packet now
+ return true;
+ }
+ ret = 0;
+ if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
+ CL_ParseServerMessage();
+ return ret;
+}
+
+void NetConn_QueryQueueFrame(void)
+{
+ int index;
+ int queries;
+ int maxqueries;
+ double timeouttime;
+ static double querycounter = 0;
+
+ if(!net_slist_pause.integer && serverlist_paused)
+ ServerList_RebuildViewList();
+ serverlist_paused = net_slist_pause.integer != 0;
+
+ if (serverlist_querysleep)
+ return;
+
+ // apply a cool down time after master server replies,
+ // to avoid messing up the ping times on the servers
+ if (serverlist_querywaittime > realtime)
+ return;
+
+ // each time querycounter reaches 1.0 issue a query
+ querycounter += cl.realframetime * net_slist_queriespersecond.value;
+ maxqueries = (int)querycounter;
+ maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
+ querycounter -= maxqueries;
+
+ if( maxqueries == 0 ) {
+ return;
+ }
+
+ // scan serverlist and issue queries as needed
+ serverlist_querysleep = true;
+
+ timeouttime = realtime - net_slist_timeout.value;
+ for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
+ {
+ serverlist_entry_t *entry = &serverlist_cache[ index ];
+ if( entry->query != SQS_QUERYING && entry->query != SQS_REFRESHING )
+ {
+ continue;
+ }
+
+ serverlist_querysleep = false;
+ if( entry->querycounter != 0 && entry->querytime > timeouttime )
+ {
+ continue;
+ }
+
+ if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
+ {
+ lhnetaddress_t address;
+ int socket;
+
+ LHNETADDRESS_FromString(&address, entry->info.cname, 0);
+ if (entry->protocol == PROTOCOL_QUAKEWORLD)
+ {
+ for (socket = 0; socket < cl_numsockets ; socket++)
+ NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
+ }
+ else
+ {
+ for (socket = 0; socket < cl_numsockets ; socket++)
+ NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getstatus", &address);
+ }
+
+ // update the entry fields
+ entry->querytime = realtime;
+ entry->querycounter++;
+
+ // if not in the slist menu we should print the server to console
+ if (serverlist_consoleoutput)
+ Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
+
+ queries++;
+ }
+ else
+ {
+ // have we tried to refresh this server?
+ if( entry->query == SQS_REFRESHING ) {
+ // yes, so update the reply count (since its not responding anymore)
+ serverreplycount--;
+ if(!serverlist_paused)
+ ServerList_ViewList_Remove(entry);
+ }
+ entry->query = SQS_TIMEDOUT;
+ }
+ }
+}
+
+void NetConn_ClientFrame(void)
+{
+ int i, length;
+ lhnetaddress_t peeraddress;
+ NetConn_UpdateSockets();
+ if (cls.connect_trying && cls.connect_nextsendtime < realtime)
+ {
+ if (cls.connect_remainingtries == 0)
+ M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
+ cls.connect_nextsendtime = realtime + 1;
+ cls.connect_remainingtries--;
+ if (cls.connect_remainingtries <= -10)
+ {
+ cls.connect_trying = false;
+ M_Update_Return_Reason("Connect: Failed");
+ return;
+ }
+ // try challenge first (newer DP server or QW)
+ NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
+ // then try netquake as a fallback (old server, or netquake)
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREQ_CONNECT);
+ MSG_WriteString(&net_message, "QUAKE");
+ MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ // extended proquake stuff
+ MSG_WriteByte(&net_message, 1); // mod = MOD_PROQUAKE
+ // this version matches ProQuake 3.40, the first version to support
+ // the NAT fix, and it only supports the NAT fix for ProQuake 3.40 or
+ // higher clients, so we pretend we are that version...
+ MSG_WriteByte(&net_message, 34); // version * 10
+ MSG_WriteByte(&net_message, 0); // flags
+ MSG_WriteLong(&net_message, 0); // password
+ // write the packetsize now...
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
+ SZ_Clear(&net_message);
+ }
+ for (i = 0;i < cl_numsockets;i++)
+ {
+ while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
+ {
+// R_TimeReport("clientreadnetwork");
+ NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
+// R_TimeReport("clientparsepacket");
+ }
+ }
+ NetConn_QueryQueueFrame();
+ if (cls.netcon && realtime > cls.netcon->timeout && !sv.active)
+ {
+ Con_Print("Connection timed out\n");
+ CL_Disconnect();
+ Host_ShutdownServer ();
+ }
+}
+
+static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
+{
+ int i;
+ char c;
+ for (i = 0;i < bufferlength - 1;i++)
+ {
+ do
+ {
+ c = rand () % (127 - 33) + 33;
+ } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
+ buffer[i] = c;
+ }
+ buffer[i] = 0;
+}
+
+/// (div0) build the full response only if possible; better a getinfo response than no response at all if getstatus won't fit
+static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
+{
+ char qcstatus[256];
+ unsigned int nb_clients = 0, nb_bots = 0, i;
+ int length;
+ char teambuf[3];
+ const char *crypto_idstring;
+ const char *str;
+
+ SV_VM_Begin();
+
+ // How many clients are there?
+ for (i = 0;i < (unsigned int)svs.maxclients;i++)
+ {
+ if (svs.clients[i].active)
+ {
+ nb_clients++;
+ if (!svs.clients[i].netconnection)
+ nb_bots++;
+ }
+ }
+
+ *qcstatus = 0;
+ str = PRVM_GetString(PRVM_serverglobalstring(worldstatus));
+ if(str && *str)
+ {
+ char *p;
+ const char *q;
+ p = qcstatus;
+ for(q = str; *q && p - qcstatus < (ptrdiff_t)(sizeof(qcstatus)) - 1; ++q)
+ if(*q != '\\' && *q != '\n')
+ *p++ = *q;
+ *p = 0;
+ }
+
+ /// \TODO: we should add more information for the full status string
+ crypto_idstring = Crypto_GetInfoResponseDataString();
+ length = dpsnprintf(out_msg, out_size,
+ "\377\377\377\377%s\x0A"
+ "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
+ "\\clients\\%d\\bots\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
+ "%s%s"
+ "%s%s"
+ "%s%s"
+ "%s",
+ fullstatus ? "statusResponse" : "infoResponse",
+ gamename, com_modname, gameversion.integer, svs.maxclients,
+ nb_clients, nb_bots, sv.worldbasename, hostname.string, NET_PROTOCOL_VERSION,
+ *qcstatus ? "\\qcstatus\\" : "", qcstatus,
+ challenge ? "\\challenge\\" : "", challenge ? challenge : "",
+ crypto_idstring ? "\\d0_blind_id\\" : "", crypto_idstring ? crypto_idstring : "",
+ fullstatus ? "\n" : "");
+
+ // Make sure it fits in the buffer
+ if (length < 0)
+ goto bad;
+
+ if (fullstatus)
+ {
+ char *ptr;
+ int left;
+ int savelength;
+
+ savelength = length;
+
+ ptr = out_msg + length;
+ left = (int)out_size - length;
+
+ for (i = 0;i < (unsigned int)svs.maxclients;i++)
+ {
+ client_t *cl = &svs.clients[i];
+ if (cl->active)
+ {
+ int nameind, cleanind, pingvalue;
+ char curchar;
+ char cleanname [sizeof(cl->name)];
+ const char *str;
+ prvm_edict_t *ed;
+
+ // Remove all characters '"' and '\' in the player name
+ nameind = 0;
+ cleanind = 0;
+ do
+ {
+ curchar = cl->name[nameind++];
+ if (curchar != '"' && curchar != '\\')
+ {
+ cleanname[cleanind++] = curchar;
+ if (cleanind == sizeof(cleanname) - 1)
+ break;
+ }
+ } while (curchar != '\0');
+ cleanname[cleanind] = 0; // cleanind is always a valid index even at this point
+
+ pingvalue = (int)(cl->ping * 1000.0f);
+ if(cl->netconnection)
+ pingvalue = bound(1, pingvalue, 9999);
+ else
+ pingvalue = 0;
+
+ *qcstatus = 0;
+ ed = PRVM_EDICT_NUM(i + 1);
+ str = PRVM_GetString(PRVM_serveredictstring(ed, clientstatus));
+ if(str && *str)
+ {
+ char *p;
+ const char *q;
+ p = qcstatus;
+ for(q = str; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q)
+ if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q))
+ *p++ = *q;
+ *p = 0;
+ }
+
+ if ((gamemode == GAME_NEXUIZ || gamemode == GAME_XONOTIC) && (teamplay.integer > 0))
+ {
+ if(cl->frags == -666) // spectator
+ strlcpy(teambuf, " 0", sizeof(teambuf));
+ else if(cl->colors == 0x44) // red team
+ strlcpy(teambuf, " 1", sizeof(teambuf));
+ else if(cl->colors == 0xDD) // blue team
+ strlcpy(teambuf, " 2", sizeof(teambuf));
+ else if(cl->colors == 0xCC) // yellow team
+ strlcpy(teambuf, " 3", sizeof(teambuf));
+ else if(cl->colors == 0x99) // pink team
+ strlcpy(teambuf, " 4", sizeof(teambuf));
+ else
+ strlcpy(teambuf, " 0", sizeof(teambuf));
+ }
+ else
+ *teambuf = 0;
+
+ // note: team number is inserted according to SoF2 protocol
+ if(*qcstatus)
+ length = dpsnprintf(ptr, left, "%s %d%s \"%s\"\n",
+ qcstatus,
+ pingvalue,
+ teambuf,
+ cleanname);
+ else
+ length = dpsnprintf(ptr, left, "%d %d%s \"%s\"\n",
+ cl->frags,
+ pingvalue,
+ teambuf,
+ cleanname);
+
+ if(length < 0)
+ {
+ // out of space?
+ // turn it into an infoResponse!
+ out_msg[savelength] = 0;
+ memcpy(out_msg + 4, "infoResponse\x0A", 13);
+ memmove(out_msg + 17, out_msg + 19, savelength - 19);
+ break;
+ }
+ left -= length;
+ ptr += length;
+ }
+ }
+ }
+
+ SV_VM_End();
+ return true;
+
+bad:
+ SV_VM_End();
+ return false;
+}
+
+static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
+{
+ int floodslotnum, bestfloodslotnum;
+ double bestfloodtime;
+ lhnetaddress_t noportpeeraddress;
+ // see if this is a connect flood
+ noportpeeraddress = *peeraddress;
+ LHNETADDRESS_SetPort(&noportpeeraddress, 0);
+ bestfloodslotnum = 0;
+ bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
+ for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
+ {
+ if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
+ {
+ bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
+ bestfloodslotnum = floodslotnum;
+ }
+ if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
+ {
+ // this address matches an ongoing flood address
+ if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
+ {
+ // renew the ban on this address so it does not expire
+ // until the flood has subsided
+ sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
+ //Con_Printf("Flood detected!\n");
+ return true;
+ }
+ // the flood appears to have subsided, so allow this
+ bestfloodslotnum = floodslotnum; // reuse the same slot
+ break;
+ }
+ }
+ // begin a new timeout on this address
+ sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
+ sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
+ //Con_Printf("Flood detection initiated!\n");
+ return false;
+}
+
+void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
+{
+ int floodslotnum;
+ lhnetaddress_t noportpeeraddress;
+ // see if this is a connect flood
+ noportpeeraddress = *peeraddress;
+ LHNETADDRESS_SetPort(&noportpeeraddress, 0);
+ for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
+ {
+ if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
+ {
+ // this address matches an ongoing flood address
+ // remove the ban
+ sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
+ sv.connectfloodaddresses[floodslotnum].lasttime = 0;
+ //Con_Printf("Flood cleared!\n");
+ }
+ }
+}
+
+typedef qboolean (*rcon_matchfunc_t) (lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen);
+
+qboolean hmac_mdfour_time_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
+{
+ char mdfourbuf[16];
+ long t1, t2;
+
+ t1 = (long) time(NULL);
+ t2 = strtol(s, NULL, 0);
+ if(abs(t1 - t2) > rcon_secure_maxdiff.integer)
+ return false;
+
+ if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
+ return false;
+
+ return !memcmp(mdfourbuf, hash, 16);
+}
+
+qboolean hmac_mdfour_challenge_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
+{
+ char mdfourbuf[16];
+ int i;
+
+ if(slen < (int)(sizeof(challenge[0].string)) - 1)
+ return false;
+
+ // validate the challenge
+ for (i = 0;i < MAX_CHALLENGES;i++)
+ if(challenge[i].time > 0)
+ if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strncmp(challenge[i].string, s, sizeof(challenge[0].string) - 1))
+ break;
+ // if the challenge is not recognized, drop the packet
+ if (i == MAX_CHALLENGES)
+ return false;
+
+ if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, strlen(password)))
+ return false;
+
+ if(memcmp(mdfourbuf, hash, 16))
+ return false;
+
+ // unmark challenge to prevent replay attacks
+ challenge[i].time = 0;
+
+ return true;
+}
+
+qboolean plaintext_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
+{
+ return !strcmp(password, hash);
+}
+
+/// returns a string describing the user level, or NULL for auth failure
+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)
+{
+ const char *text, *userpass_start, *userpass_end, *userpass_startpass;
+ static char buf[MAX_INPUTLINE];
+ qboolean hasquotes;
+ qboolean restricted = false;
+ qboolean have_usernames = false;
+
+ userpass_start = rcon_password.string;
+ while((userpass_end = strchr(userpass_start, ' ')))
+ {
+ have_usernames = true;
+ strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
+ if(buf[0])
+ if(comparator(peeraddress, buf, password, cs, cslen))
+ goto allow;
+ userpass_start = userpass_end + 1;
+ }
+ if(userpass_start[0])
+ {
+ userpass_end = userpass_start + strlen(userpass_start);
+ if(comparator(peeraddress, userpass_start, password, cs, cslen))
+ goto allow;
+ }
+
+ restricted = true;
+ have_usernames = false;
+ userpass_start = rcon_restricted_password.string;
+ while((userpass_end = strchr(userpass_start, ' ')))
+ {
+ have_usernames = true;
+ strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
+ if(buf[0])
+ if(comparator(peeraddress, buf, password, cs, cslen))
+ goto check;
+ userpass_start = userpass_end + 1;
+ }
+ if(userpass_start[0])
+ {
+ userpass_end = userpass_start + strlen(userpass_start);
+ if(comparator(peeraddress, userpass_start, password, cs, cslen))
+ goto check;
+ }
+
+ return NULL; // DENIED
+
+check:
+ for(text = s; text != endpos; ++text)
+ if((signed char) *text > 0 && ((signed char) *text < (signed char) ' ' || *text == ';'))
+ return NULL; // block possible exploits against the parser/alias expansion
+
+ while(s != endpos)
+ {
+ size_t l = strlen(s);
+ if(l)
+ {
+ hasquotes = (strchr(s, '"') != NULL);
+ // sorry, we can't allow these substrings in wildcard expressions,
+ // as they can mess with the argument counts
+ text = rcon_restricted_commands.string;
+ while(COM_ParseToken_Console(&text))
+ {
+ // com_token now contains a pattern to check for...
+ if(strchr(com_token, '*') || strchr(com_token, '?')) // wildcard expression, * can only match a SINGLE argument
+ {
+ if(!hasquotes)
+ if(matchpattern_with_separator(s, com_token, true, " ", true)) // note how we excluded tab, newline etc. above
+ goto match;
+ }
+ else if(strchr(com_token, ' ')) // multi-arg expression? must match in whole
+ {
+ if(!strcmp(com_token, s))
+ goto match;
+ }
+ else // single-arg expression? must match the beginning of the command
+ {
+ if(!strcmp(com_token, s))
+ goto match;
+ if(!memcmp(va("%s ", com_token), s, strlen(com_token) + 1))
+ goto match;
+ }
+ }
+ // if we got here, nothing matched!
+ return NULL;
+ }
+match:
+ s += l + 1;
+ }
+
+allow:
+ userpass_startpass = strchr(userpass_start, ':');
+ if(have_usernames && userpass_startpass && userpass_startpass < userpass_end)
+ return va("%srcon (username %.*s)", restricted ? "restricted " : "", (int)(userpass_startpass-userpass_start), userpass_start);
+
+ return va("%srcon", restricted ? "restricted " : "");
+}
+
+void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos, qboolean proquakeprotocol)
+{
+ if(userlevel)
+ {
+ // looks like a legitimate rcon command with the correct password
+ const char *s_ptr = s;
+ Con_Printf("server received %s command from %s: ", userlevel, host_client ? host_client->name : addressstring2);
+ while(s_ptr != endpos)
+ {
+ size_t l = strlen(s_ptr);
+ if(l)
+ Con_Printf(" %s;", s_ptr);
+ s_ptr += l + 1;
+ }
+ Con_Printf("\n");
+
+ if (!host_client || !host_client->netconnection || LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
+ Con_Rcon_Redirect_Init(mysocket, peeraddress, proquakeprotocol);
+ while(s != endpos)
+ {
+ size_t l = strlen(s);
+ if(l)
+ {
+ client_t *host_client_save = host_client;
+ Cmd_ExecuteString(s, src_command);
+ host_client = host_client_save;
+ // in case it is a command that changes host_client (like restart)
+ }
+ s += l + 1;
+ }
+ Con_Rcon_Redirect_End();
+ }
+ else
+ {
+ Con_Printf("server denied rcon access to %s\n", host_client ? host_client->name : addressstring2);
+ }
+}
+
+extern void SV_SendServerinfo (client_t *client);
+static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
+{
+ int i, ret, clientnum, best;
+ double besttime;
+ client_t *client;
+ char *s, *string, response[1400], addressstring2[128];
+ static char stringbuf[16384];
+ qboolean islocal = (LHNETADDRESS_GetAddressType(peeraddress) == LHNETADDRESSTYPE_LOOP);
+ char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
+ size_t sendlength, response_len;
+
+ if (!sv.active)
+ return false;
+
+ // convert the address to a string incase we need it
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+
+ // see if we can identify the sender as a local player
+ // (this is necessary for rcon to send a reliable reply if the client is
+ // actually on the server, not sending remotely)
+ for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+ if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
+ break;
+ if (i == svs.maxclients)
+ host_client = NULL;
+
+ if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
+ {
+ // received a command string - strip off the packaging and put it
+ // into our string buffer with NULL termination
+ data += 4;
+ length -= 4;
+ length = min(length, (int)sizeof(stringbuf) - 1);
+ memcpy(stringbuf, data, length);
+ stringbuf[length] = 0;
+ string = stringbuf;
+
+ if (developer_extra.integer)
+ {
+ Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
+ Com_HexDumpToConsole(data, length);
+ }
+
+ sendlength = sizeof(senddata) - 4;
+ switch(Crypto_ServerParsePacket(string, length, senddata+4, &sendlength, peeraddress))
+ {
+ case CRYPTO_NOMATCH:
+ // nothing to do
+ break;
+ case CRYPTO_MATCH:
+ if(sendlength)
+ {
+ memcpy(senddata, "\377\377\377\377", 4);
+ NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
+ }
+ break;
+ case CRYPTO_DISCARD:
+ if(sendlength)
+ {
+ memcpy(senddata, "\377\377\377\377", 4);
+ NetConn_Write(mysocket, senddata, sendlength+4, peeraddress);
+ }
+ return true;
+ break;
+ case CRYPTO_REPLACE:
+ string = senddata+4;
+ length = sendlength;
+ break;
+ }
+
+ if (length >= 12 && !memcmp(string, "getchallenge", 12) && (islocal || sv_public.integer > -3))
+ {
+ for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
+ {
+ if(challenge[i].time > 0)
+ if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
+ break;
+ if (besttime > challenge[i].time)
+ besttime = challenge[best = i].time;
+ }
+ // if we did not find an exact match, choose the oldest and
+ // update address and string
+ if (i == MAX_CHALLENGES)
+ {
+ i = best;
+ challenge[i].address = *peeraddress;
+ NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
+ }
+ challenge[i].time = realtime;
+ // send the challenge
+ dpsnprintf(response, sizeof(response), "\377\377\377\377challenge %s", challenge[i].string);
+ response_len = strlen(response) + 1;
+ Crypto_ServerAppendToChallenge(string, length, response, &response_len, sizeof(response));
+ NetConn_Write(mysocket, response, response_len, peeraddress);
+ return true;
+ }
+ if (length > 8 && !memcmp(string, "connect\\", 8))
+ {
+ crypto_t *crypto = Crypto_ServerGetInstance(peeraddress);
+ string += 7;
+ length -= 7;
+
+ if(crypto && crypto->authenticated)
+ {
+ // no need to check challenge
+ if(crypto_developer.integer)
+ {
+ Con_Printf("%s connection to %s is being established: client is %s@%.*s, I am %.*s@%.*s\n",
+ crypto->use_aes ? "Encrypted" : "Authenticated",
+ addressstring2,
+ crypto->client_idfp[0] ? crypto->client_idfp : "-",
+ crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-",
+ crypto_keyfp_recommended_length, crypto->server_idfp[0] ? crypto->server_idfp : "-",
+ crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-"
+ );
+ }
+ }
+ else
+ {
+ if ((s = SearchInfostring(string, "challenge")))
+ {
+ // validate the challenge
+ for (i = 0;i < MAX_CHALLENGES;i++)
+ if(challenge[i].time > 0)
+ if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
+ break;
+ // if the challenge is not recognized, drop the packet
+ if (i == MAX_CHALLENGES)
+ return true;
+ }
+ }
+
+ if((s = SearchInfostring(string, "message")))
+ Con_DPrintf("Connecting client %s sent us the message: %s\n", addressstring2, s);
+
+ if(!(islocal || sv_public.integer > -2))
+ {
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"reject %s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
+ NetConn_WriteString(mysocket, va("\377\377\377\377reject %s", sv_public_rejectreason.string), peeraddress);
+ return true;
+ }
+
+ // check engine protocol
+ if(!(s = SearchInfostring(string, "protocol")) || strcmp(s, "darkplaces 3"))
+ {
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
+ return true;
+ }
+
+ // see if this is a duplicate connection request or a disconnected
+ // client who is rejoining to the same client slot
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ {
+ if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
+ {
+ // this is a known client...
+ if(crypto && crypto->authenticated)
+ {
+ // reject if changing key!
+ if(client->netconnection->crypto.authenticated)
+ {
+ if(
+ strcmp(client->netconnection->crypto.client_idfp, crypto->client_idfp)
+ ||
+ strcmp(client->netconnection->crypto.server_idfp, crypto->server_idfp)
+ ||
+ strcmp(client->netconnection->crypto.client_keyfp, crypto->client_keyfp)
+ ||
+ strcmp(client->netconnection->crypto.server_keyfp, crypto->server_keyfp)
+ )
+ {
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to change key of crypto.\" to %s.\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to change key of crypto.", peeraddress);
+ return true;
+ }
+ }
+ }
+ else
+ {
+ // reject if downgrading!
+ if(client->netconnection->crypto.authenticated)
+ {
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to downgrade crypto.\" to %s.\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to downgrade crypto.", peeraddress);
+ return true;
+ }
+ }
+ if (client->spawned)
+ {
+ // client crashed and is coming back,
+ // keep their stuff intact
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
+ if(crypto && crypto->authenticated)
+ Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
+ SV_VM_Begin();
+ SV_SendServerinfo(client);
+ SV_VM_End();
+ }
+ else
+ {
+ // client is still trying to connect,
+ // so we send a duplicate reply
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
+ if(crypto && crypto->authenticated)
+ Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto);
+ NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
+ }
+ return true;
+ }
+ }
+
+ if (NetConn_PreventConnectFlood(peeraddress))
+ return true;
+
+ // find an empty client slot for this new client
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ {
+ netconn_t *conn;
+ if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
+ {
+ // allocated connection
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
+ NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
+ // now set up the client
+ if(crypto && crypto->authenticated)
+ Crypto_ServerFinishInstance(&conn->crypto, crypto);
+ SV_VM_Begin();
+ SV_ConnectClient(clientnum, conn);
+ SV_VM_End();
+ NetConn_Heartbeat(1);
+ return true;
+ }
+ }
+
+ // no empty slots found - server is full
+ if (developer_extra.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
+
+ return true;
+ }
+ if (length >= 7 && !memcmp(string, "getinfo", 7) && (islocal || sv_public.integer > -1))
+ {
+ const char *challenge = NULL;
+
+ // If there was a challenge in the getinfo message
+ if (length > 8 && string[7] == ' ')
+ challenge = string + 8;
+
+ if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
+ {
+ if (developer_extra.integer)
+ Con_DPrintf("Sending reply to master %s - %s\n", addressstring2, response);
+ NetConn_WriteString(mysocket, response, peeraddress);
+ }
+ return true;
+ }
+ if (length >= 9 && !memcmp(string, "getstatus", 9) && (islocal || sv_public.integer > -1))
+ {
+ const char *challenge = NULL;
+
+ // If there was a challenge in the getinfo message
+ if (length > 10 && string[9] == ' ')
+ challenge = string + 10;
+
+ if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
+ {
+ if (developer_extra.integer)
+ Con_DPrintf("Sending reply to client %s - %s\n", addressstring2, response);
+ NetConn_WriteString(mysocket, response, peeraddress);
+ }
+ return true;
+ }
+ if (length >= 37 && !memcmp(string, "srcon HMAC-MD4 TIME ", 20))
+ {
+ char *password = string + 20;
+ char *timeval = string + 37;
+ char *s = strchr(timeval, ' ');
+ char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
+ const char *userlevel;
+
+ if(rcon_secure.integer > 1)
+ return true;
+
+ if(!s)
+ return true; // invalid packet
+ ++s;
+
+ userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_time_matching, timeval, endpos - timeval - 1); // not including the appended \0 into the HMAC
+ RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
+ return true;
+ }
+ if (length >= 42 && !memcmp(string, "srcon HMAC-MD4 CHALLENGE ", 25))
+ {
+ char *password = string + 25;
+ char *challenge = string + 42;
+ char *s = strchr(challenge, ' ');
+ char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
+ const char *userlevel;
+ if(!s)
+ return true; // invalid packet
+ ++s;
+
+ userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_challenge_matching, challenge, endpos - challenge - 1); // not including the appended \0 into the HMAC
+ RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
+ return true;
+ }
+ if (length >= 5 && !memcmp(string, "rcon ", 5))
+ {
+ int i;
+ char *s = string + 5;
+ char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
+ char password[64];
+
+ if(rcon_secure.integer > 0)
+ return true;
+
+ for (i = 0;!ISWHITESPACE(*s);s++)
+ if (i < (int)sizeof(password) - 1)
+ password[i++] = *s;
+ if(ISWHITESPACE(*s) && s != endpos) // skip leading ugly space
+ ++s;
+ password[i] = 0;
+ if (!ISWHITESPACE(password[0]))
+ {
+ const char *userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
+ RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
+ }
+ return true;
+ }
+ if (!strncmp(string, "extResponse ", 12))
+ {
+ ++sv_net_extresponse_count;
+ if(sv_net_extresponse_count > NET_EXTRESPONSE_MAX)
+ sv_net_extresponse_count = NET_EXTRESPONSE_MAX;
+ sv_net_extresponse_last = (sv_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
+ dpsnprintf(sv_net_extresponse[sv_net_extresponse_last], sizeof(sv_net_extresponse[sv_net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
+ return true;
+ }
+ if (!strncmp(string, "ping", 4))
+ {
+ if (developer_extra.integer)
+ Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
+ NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
+ return true;
+ }
+ if (!strncmp(string, "ack", 3))
+ return true;
+ // we may not have liked the packet, but it was a command packet, so
+ // we're done processing this packet now
+ return true;
+ }
+ // netquake control packets, supported for compatibility only, and only
+ // when running game protocols that are normally served via this connection
+ // protocol
+ // (this protects more modern protocols against being used for
+ // Quake packet flood Denial Of Service attacks)
+ 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)
+ {
+ int c;
+ int protocolnumber;
+ const char *protocolname;
+ data += 4;
+ length -= 4;
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, data, length);
+ MSG_BeginReading();
+ c = MSG_ReadByte();
+ switch (c)
+ {
+ case CCREQ_CONNECT:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
+ if(!(islocal || sv_public.integer > -2))
+ {
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"%s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_REJECT);
+ MSG_WriteString(&net_message, va("%s\n", sv_public_rejectreason.string));
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ break;
+ }
+
+ protocolname = MSG_ReadString();
+ protocolnumber = MSG_ReadByte();
+ if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
+ {
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_REJECT);
+ MSG_WriteString(&net_message, "Incompatible version.\n");
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ break;
+ }
+
+ // see if this connect request comes from a known client
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ {
+ if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
+ {
+ // this is either a duplicate connection request
+ // or coming back from a timeout
+ // (if so, keep their stuff intact)
+
+ // send a reply
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_ACCEPT);
+ MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+
+ // if client is already spawned, re-send the
+ // serverinfo message as they'll need it to play
+ if (client->spawned)
+ {
+ SV_VM_Begin();
+ SV_SendServerinfo(client);
+ SV_VM_End();
+ }
+ return true;
+ }
+ }
+
+ // this is a new client, check for connection flood
+ if (NetConn_PreventConnectFlood(peeraddress))
+ break;
+
+ // find a slot for the new client
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ {
+ netconn_t *conn;
+ if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
+ {
+ // connect to the client
+ // everything is allocated, just fill in the details
+ strlcpy (conn->address, addressstring2, sizeof (conn->address));
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
+ // send back the info about the server connection
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_ACCEPT);
+ MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ // now set up the client struct
+ SV_VM_Begin();
+ SV_ConnectClient(clientnum, conn);
+ SV_VM_End();
+ NetConn_Heartbeat(1);
+ return true;
+ }
+ }
+
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
+ // no room; try to let player know
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_REJECT);
+ MSG_WriteString(&net_message, "Server is full.\n");
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ break;
+ case CCREQ_SERVER_INFO:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
+ if(!(islocal || sv_public.integer > -1))
+ break;
+ if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
+ {
+ int numclients;
+ char myaddressstring[128];
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
+ MSG_WriteString(&net_message, myaddressstring);
+ MSG_WriteString(&net_message, hostname.string);
+ MSG_WriteString(&net_message, sv.name);
+ // How many clients are there?
+ for (i = 0, numclients = 0;i < svs.maxclients;i++)
+ if (svs.clients[i].active)
+ numclients++;
+ MSG_WriteByte(&net_message, numclients);
+ MSG_WriteByte(&net_message, svs.maxclients);
+ MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ break;
+ case CCREQ_PLAYER_INFO:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
+ if(!(islocal || sv_public.integer > -1))
+ break;
+ if (sv.active)
+ {
+ int playerNumber, activeNumber, clientNumber;
+ client_t *client;
+
+ playerNumber = MSG_ReadByte();
+ activeNumber = -1;
+ for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
+ if (client->active && ++activeNumber == playerNumber)
+ break;
+ if (clientNumber != svs.maxclients)
+ {
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
+ MSG_WriteByte(&net_message, playerNumber);
+ MSG_WriteString(&net_message, client->name);
+ MSG_WriteLong(&net_message, client->colors);
+ MSG_WriteLong(&net_message, client->frags);
+ MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
+ if(sv_status_privacy.integer)
+ MSG_WriteString(&net_message, client->netconnection ? "hidden" : "botclient");
+ else
+ MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ }
+ break;
+ case CCREQ_RULE_INFO:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
+ if(!(islocal || sv_public.integer > -1))
+ break;
+ if (sv.active)
+ {
+ char *prevCvarName;
+ cvar_t *var;
+
+ // find the search start location
+ prevCvarName = MSG_ReadString();
+ var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
+
+ // send the response
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_RULE_INFO);
+ if (var)
+ {
+ MSG_WriteString(&net_message, var->name);
+ MSG_WriteString(&net_message, var->string);
+ }
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ break;
+ case CCREQ_RCON:
+ if (developer_extra.integer)
+ Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RCON from %s.\n", addressstring2);
+ if (sv.active && !rcon_secure.integer)
+ {
+ char password[2048];
+ char cmd[2048];
+ char *s;
+ char *endpos;
+ const char *userlevel;
+ strlcpy(password, MSG_ReadString(), sizeof(password));
+ strlcpy(cmd, MSG_ReadString(), sizeof(cmd));
+ s = cmd;
+ endpos = cmd + strlen(cmd) + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
+ userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
+ RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, true);
+ return true;
+ }
+ break;
+ default:
+ break;
+ }
+ SZ_Clear(&net_message);
+ // we may not have liked the packet, but it was a valid control
+ // packet, so we're done processing this packet now
+ return true;
+ }
+ if (host_client)
+ {
+ if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
+ {
+ SV_VM_Begin();
+ SV_ReadClientMessage();
+ SV_VM_End();
+ return ret;
+ }
+ }
+ return 0;
+}
+
+void NetConn_ServerFrame(void)
+{
+ int i, length;
+ lhnetaddress_t peeraddress;
+ for (i = 0;i < sv_numsockets;i++)
+ while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
+ NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
+ for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+ {
+ // never timeout loopback connections
+ if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
+ {
+ Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
+ SV_VM_Begin();
+ SV_DropClient(false);
+ SV_VM_End();
+ }
+ }
+}
+
+void NetConn_SleepMicroseconds(int microseconds)
+{
+ LHNET_SleepUntilPacket_Microseconds(microseconds);
+}
+
+void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
+{
+ int i, j;
+ int masternum;
+ lhnetaddress_t masteraddress;
+ lhnetaddress_t broadcastaddress;
+ char request[256];
+
+ if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
+ return;
+
+ // 26000 is the default quake server port, servers on other ports will not
+ // be found
+ // note this is IPv4-only, I doubt there are IPv6-only LANs out there
+ LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
+
+ if (querydp)
+ {
+ for (i = 0;i < cl_numsockets;i++)
+ {
+ if (cl_sockets[i])
+ {
+ const char *cmdname, *extraoptions;
+ int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
+
+ if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
+ {
+ // search LAN for Quake servers
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
+ MSG_WriteString(&net_message, "QUAKE");
+ MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
+ SZ_Clear(&net_message);
+
+ // search LAN for DarkPlaces servers
+ NetConn_WriteString(cl_sockets[i], "\377\377\377\377getstatus", &broadcastaddress);
+ }
+
+ // build the getservers message to send to the dpmaster master servers
+ if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == LHNETADDRESSTYPE_INET6)
+ {
+ cmdname = "getserversExt";
+ extraoptions = " ipv4 ipv6"; // ask for IPv4 and IPv6 servers
+ }
+ else
+ {
+ cmdname = "getservers";
+ extraoptions = "";
+ }
+ dpsnprintf(request, sizeof(request), "\377\377\377\377%s %s %u empty full%s", cmdname, gamename, NET_PROTOCOL_VERSION, extraoptions);
+
+ // search internet
+ for (masternum = 0;sv_masters[masternum].name;masternum++)
+ {
+ if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == af)
+ {
+ masterquerycount++;
+ NetConn_WriteString(cl_sockets[i], request, &masteraddress);
+ }
+ }
+
+ // search favorite servers
+ for(j = 0; j < nFavorites; ++j)
+ {
+ if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
+ {
+ if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
+ NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, request, true );
+ }
+ }
+ }
+ }
+ }
+
+ // only query QuakeWorld servers when the user wants to
+ if (queryqw)
+ {
+ for (i = 0;i < cl_numsockets;i++)
+ {
+ if (cl_sockets[i])
+ {
+ int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
+
+ if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
+ {
+ // search LAN for QuakeWorld servers
+ NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
+
+ // build the getservers message to send to the qwmaster master servers
+ // note this has no -1 prefix, and the trailing nul byte is sent
+ dpsnprintf(request, sizeof(request), "c\n");
+ }
+
+ // search internet
+ for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
+ {
+ if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
+ {
+ if (m_state != m_slist)
+ {
+ char lookupstring[128];
+ LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
+ Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
+ }
+ masterquerycount++;
+ NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
+ }
+ }
+
+ // search favorite servers
+ for(j = 0; j < nFavorites; ++j)
+ {
+ if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
+ {
+ if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
+ {
+ NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &favorites[j]);
+ NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, request, true );
+ }
+ }
+ }
+ }
+ }
+ }
+ if (!masterquerycount)
+ {
+ Con_Print("Unable to query master servers, no suitable network sockets active.\n");
+ M_Update_Return_Reason("No network");
+ }
+}
+
+void NetConn_Heartbeat(int priority)
+{
+ lhnetaddress_t masteraddress;
+ int masternum;
+ lhnetsocket_t *mysocket;
+
+ // if it's a state change (client connected), limit next heartbeat to no
+ // more than 30 sec in the future
+ if (priority == 1 && nextheartbeattime > realtime + 30.0)
+ nextheartbeattime = realtime + 30.0;
+
+ // limit heartbeatperiod to 30 to 270 second range,
+ // lower limit is to avoid abusing master servers with excess traffic,
+ // upper limit is to avoid timing out on the master server (which uses
+ // 300 sec timeout)
+ if (sv_heartbeatperiod.value < 30)
+ Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
+ if (sv_heartbeatperiod.value > 270)
+ Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
+
+ // make advertising optional and don't advertise singleplayer games, and
+ // only send a heartbeat as often as the admin wants
+ if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
+ {
+ nextheartbeattime = realtime + sv_heartbeatperiod.value;
+ for (masternum = 0;sv_masters[masternum].name;masternum++)
+ if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
+ NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
+ }
+}
+
+static void Net_Heartbeat_f(void)
+{
+ if (sv.active)
+ NetConn_Heartbeat(2);
+ else
+ Con_Print("No server running, can not heartbeat to master server.\n");
+}
+
+void PrintStats(netconn_t *conn)
+{
+ if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
+ Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->outgoing_unreliable_sequence, conn->qw.incoming_sequence);
+ else
+ Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
+}
+
+void Net_Stats_f(void)
+{
+ netconn_t *conn;
+ Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
+ Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
+ Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
+ Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
+ Con_Printf("packetsSent = %i\n", packetsSent);
+ Con_Printf("packetsReSent = %i\n", packetsReSent);
+ Con_Printf("packetsReceived = %i\n", packetsReceived);
+ Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
+ Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
+ Con_Print("connections =\n");
+ for (conn = netconn_list;conn;conn = conn->next)
+ PrintStats(conn);
+}
+
+void Net_Refresh_f(void)
+{
+ if (m_state != m_slist) {
+ Con_Print("Sending new requests to master servers\n");
+ ServerList_QueryList(false, true, false, true);
+ Con_Print("Listening for replies...\n");
+ } else
+ ServerList_QueryList(false, true, false, false);
+}
+
+void Net_Slist_f(void)
+{
+ ServerList_ResetMasks();
+ serverlist_sortbyfield = SLIF_PING;
+ serverlist_sortflags = 0;
+ if (m_state != m_slist) {
+ Con_Print("Sending requests to master servers\n");
+ ServerList_QueryList(true, true, false, true);
+ Con_Print("Listening for replies...\n");
+ } else
+ ServerList_QueryList(true, true, false, false);
+}
+
+void Net_SlistQW_f(void)
+{
+ ServerList_ResetMasks();
+ serverlist_sortbyfield = SLIF_PING;
+ serverlist_sortflags = 0;
+ if (m_state != m_slist) {
+ Con_Print("Sending requests to master servers\n");
+ ServerList_QueryList(true, false, true, true);
+ serverlist_consoleoutput = true;
+ Con_Print("Listening for replies...\n");
+ } else
+ ServerList_QueryList(true, false, true, false);
+}
+
+void NetConn_Init(void)
+{
+ int i;
+ lhnetaddress_t tempaddress;
+ netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
+ Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
+ Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
+ Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
+ Cmd_AddCommand("net_refresh", Net_Refresh_f, "query dp master servers and refresh all server information");
+ Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
+ Cvar_RegisterVariable(&rcon_restricted_password);
+ Cvar_RegisterVariable(&rcon_restricted_commands);
+ Cvar_RegisterVariable(&rcon_secure_maxdiff);
+ Cvar_RegisterVariable(&net_slist_queriespersecond);
+ Cvar_RegisterVariable(&net_slist_queriesperframe);
+ Cvar_RegisterVariable(&net_slist_timeout);
+ Cvar_RegisterVariable(&net_slist_maxtries);
+ Cvar_RegisterVariable(&net_slist_favorites);
+ Cvar_RegisterVariable(&net_slist_pause);
+ Cvar_RegisterVariable(&net_messagetimeout);
+ Cvar_RegisterVariable(&net_connecttimeout);
+ Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
+ Cvar_RegisterVariable(&cl_netlocalping);
+ Cvar_RegisterVariable(&cl_netpacketloss_send);
+ Cvar_RegisterVariable(&cl_netpacketloss_receive);
+ Cvar_RegisterVariable(&hostname);
+ Cvar_RegisterVariable(&developer_networking);
+ Cvar_RegisterVariable(&cl_netport);
+ Cvar_RegisterVariable(&sv_netport);
+ Cvar_RegisterVariable(&net_address);
+ Cvar_RegisterVariable(&net_address_ipv6);
+ Cvar_RegisterVariable(&sv_public);
+ Cvar_RegisterVariable(&sv_public_rejectreason);
+ Cvar_RegisterVariable(&sv_heartbeatperiod);
+ for (i = 0;sv_masters[i].name;i++)
+ Cvar_RegisterVariable(&sv_masters[i]);
+ Cvar_RegisterVariable(&gameversion);
+ Cvar_RegisterVariable(&gameversion_min);
+ Cvar_RegisterVariable(&gameversion_max);
+// 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.
+ if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
+ {
+ if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
+ {
+ Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
+ Cvar_SetQuick(&net_address, com_argv[i + 1]);
+ }
+ else
+ Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
+ }
+// 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
+ if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
+ {
+ i = atoi(com_argv[i + 1]);
+ if (i >= 0 && i < 65536)
+ {
+ Con_Printf("-port option used, setting port cvar to %i\n", i);
+ Cvar_SetValueQuick(&sv_netport, i);
+ }
+ else
+ Con_Printf("-port option used, but %i is not a valid port number\n", i);
+ }
+ cl_numsockets = 0;
+ sv_numsockets = 0;
+ net_message.data = net_message_buf;
+ net_message.maxsize = sizeof(net_message_buf);
+ net_message.cursize = 0;
+ LHNET_Init();
+}
+
+void NetConn_Shutdown(void)
+{
+ NetConn_CloseClientPorts();
+ NetConn_CloseServerPorts();
+ LHNET_Shutdown();
+}
+