/*
==================
SV_ForceCvar_f_helper
Called internally by SV_ForceCvar_f.
==================
*/
static void SV_ForceCvar_f_helper( client_t *cl ) {
int oldInfoLen;
int newInfoLen;
qboolean touchedUserinfo = qfalse;
// Who knows what would happen if we called the VM with a GAME_CLIENT_USERINFO_CHANGED
// when this client wasn't connected.
if (cl->state < CS_CONNECTED) {
return;
}
// First remove all keys; there might exist more than one in the userinfo.
oldInfoLen = strlen(cl->userinfo);
while (qtrue) {
Info_RemoveKey(cl->userinfo, Cmd_Argv(2));
newInfoLen = strlen(cl->userinfo);
if (oldInfoLen == newInfoLen) { break; } // userinfo wasn't modified.
oldInfoLen = newInfoLen;
touchedUserinfo = qtrue;
}
if (strlen(Cmd_Argv(3)) > 0) {
if (strlen(Cmd_Argv(2)) + strlen(Cmd_Argv(3)) + 2 + newInfoLen >= MAX_INFO_STRING) {
SV_DropClient(cl, "userinfo string length exceeded");
return;
}
Info_SetValueForKey(cl->userinfo, Cmd_Argv(2), Cmd_Argv(3));
touchedUserinfo = qtrue;
}
if (touchedUserinfo) {
SV_UserinfoChanged(cl);
VM_Call(gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients);
}
}
/*
* SV_UserinfoCommand_f
*/
static void SV_UserinfoCommand_f( client_t *client )
{
char *info;
unsigned int time;
info = Cmd_Argv( 1 );
if( !Info_Validate( info ) )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "%s", "Error: Invalid userinfo" );
return;
}
time = Sys_Milliseconds();
if( client->userinfoLatchTimeout > time )
{
Q_strncpyz( client->userinfoLatched, info, sizeof( client->userinfo ) );
}
else
{
Q_strncpyz( client->userinfo, info, sizeof( client->userinfo ) );
client->userinfoLatched[0] = '\0';
client->userinfoLatchTimeout = time + USERINFO_UPDATE_COOLDOWN_MSEC;
SV_UserinfoChanged( client );
}
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl ) {
char info[MAX_INFO_STRING];
char *arg = Cmd_Argv(1);
// Stop random empty /userinfo calls without hurting anything
if (!arg || !*arg) {
return;
}
Q_strncpyz( cl->userinfo, arg, sizeof(cl->userinfo) );
if (cl->lastUserInfoChange > svs.time) {
cl->lastUserInfoCount++;
if (cl->lastUserInfoCount >= INFO_CHANGE_MAX_COUNT) {
SV_SendServerCommand(cl, "print \"Warning: Too many info changes, last info ignored\n\"\n");
return;
}
} else {
cl->lastUserInfoCount = 0;
cl->lastUserInfoChange = svs.time + INFO_CHANGE_MIN_INTERVAL;
}
SV_UserinfoChanged( cl );
// call prog code to allow overrides
VM_Call( gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients );
// get the name out of the game and set it in the engine
SV_GetConfigstring(CS_PLAYERS + (cl - svs.clients), info, sizeof(info));
Info_SetValueForKey(cl->userinfo, "name", Info_ValueForKey(info, "n"));
Q_strncpyz(cl->name, Info_ValueForKey(info, "n"), sizeof(cl->name));
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl ) {
char *arg = Cmd_Argv(1);
// Stop random empty /userinfo calls without hurting anything
if( !arg || !*arg )
return;
Q_strncpyz( cl->userinfo, arg, sizeof(cl->userinfo) );
#ifdef FINAL_BUILD
if (cl->lastUserInfoChange > svs.time)
{
cl->lastUserInfoCount++;
if (cl->lastUserInfoCount >= INFO_CHANGE_MAX_COUNT)
{
// SV_SendServerCommand(cl, "print \"Warning: Too many info changes, last info ignored\n\"\n");
SV_SendServerCommand(cl, "print \"@@@TOO_MANY_INFO\n\"\n");
return;
}
}
else
#endif
{
cl->lastUserInfoCount = 0;
cl->lastUserInfoChange = svs.time + INFO_CHANGE_MIN_INTERVAL;
}
SV_UserinfoChanged( cl );
// call prog code to allow overrides
GVM_ClientUserinfoChanged( cl - svs.clients );
}
/*
==================
SV_ForceName_f
Sets a user's name
==================
*/
static void SV_ForceName_f( void ) {
client_t *cl;
const char *name;
// make sure server is running
if ( !com_sv_running->integer ) {
Com_Printf( "Server is not running.\n" );
return;
}
if ( Cmd_Argc() >= 2 ) {
cl = SV_GetPlayerByNum();
if ( !cl ) {
return;
}
if ( Cmd_Argc() == 2 ) {
Com_Printf ("forcename: %s: %s\n",Cmd_Argv(1),cl->name);
return;
} else {
name = Cmd_ArgsFrom(2);
cl->forcename = 2;
Q_strncpyz( cl->name, name, sizeof(cl->name) );
SV_UserinfoChanged( cl );
VM_Call( gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients );
Com_Printf ("forcename: %s: %s\n",Cmd_Argv(1),cl->name);
return;
}
}
Com_Printf ("Usage: forcename <client number> [<name>]\n");
return;
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl ) {
Q_strncpyz( cl->userinfo, Cmd_Argv(1), sizeof(cl->userinfo) );
SV_UserinfoChanged( cl );
// call prog code to allow overrides
VM_Call( gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients );
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl ) {
Q_strncpyz( cl->userinfo, Cmd_Argv(1), sizeof(cl->userinfo) );
#ifdef FINAL_BUILD
if (cl->lastUserInfoChange > svs.time)
{
cl->lastUserInfoCount++;
if (cl->lastUserInfoCount >= INFO_CHANGE_MAX_COUNT)
{
// SV_SendServerCommand(cl, "print \"Warning: Too many info changes, last info ignored\n\"\n");
SV_SendServerCommand(cl, "print \"@@@TOO_MANY_INFO\n\"\n");
return;
}
}
else
#endif
{
cl->lastUserInfoCount = 0;
cl->lastUserInfoChange = svs.time + INFO_CHANGE_MIN_INTERVAL;
}
SV_UserinfoChanged( cl );
// call prog code to allow overrides
VM_Call( gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients );
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl ) {
Q_strncpyz( cl->userinfo, Cmd_Argv(1), sizeof(cl->userinfo) );
SV_UserinfoChanged( cl );
// call prog code to allow overrides
ge->ClientUserinfoChanged( cl - svs.clients );
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl, const Cmd::Args& args )
{
if (args.Argc() < 2) {
return;
}
Q_strncpyz(cl->userinfo, args.Argv(1).c_str(), sizeof(cl->userinfo)); // FIXME QUOTING INFO
SV_UserinfoChanged( cl );
// call prog code to allow overrides
gvm.GameClientUserInfoChanged( cl - svs.clients );
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
static void SV_UpdateUserinfo_f( client_t *cl ) {
#if 0
/* TODO */
if( cl->lastUserInfoChange > svs.time && cl->lastUserInfoCount > 5 ) {
SV_SendServerCommand( cl, "print \"@@@TOO_MANY_INFO\n\"" );
return;
}
#endif
Q_strncpyz( cl->userinfo, Cmd_Argv(1), sizeof(cl->userinfo) );
SV_UserinfoChanged( cl );
// call prog code to allow overrides
VM_Call( gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients );
}
/*
* SV_UserinfoCommand_f
*/
static void SV_UserinfoCommand_f( client_t *client )
{
char *info;
info = Cmd_Argv( 1 );
if( !Info_Validate( info ) )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: Invalid userinfo" );
return;
}
Q_strncpyz( client->userinfo, info, sizeof( client->userinfo ) );
SV_UserinfoChanged( client );
}
/*
==================
SV_UpdateUserinfo_f
==================
*/
void SV_UpdateUserinfo_f( client_t *cl ) {
if ( (sv_floodProtect->integer) && (cl->state >= CS_ACTIVE) && (svs.time < cl->nextReliableUserTime) ) {
Q_strncpyz( cl->userinfobuffer, Cmd_Argv(1), sizeof(cl->userinfobuffer) );
SV_SendServerCommand(cl, "print \"^7Command ^1delayed^7 due to sv_floodprotect.\"");
return;
}
cl->userinfobuffer[0]=0;
cl->nextReliableUserTime = svs.time + 5000;
Q_strncpyz( cl->userinfo, Cmd_Argv(1), sizeof(cl->userinfo) );
SV_UserinfoChanged( cl );
// call prog code to allow overrides
VM_Call( gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients );
}
/*
* SV_UserinfoCommand_f
*/
static void SV_UserinfoCommand_f( client_t *client )
{
char *info;
// prevent userinfo cmd flood
if( client->userinfoUpTimeout > Sys_Milliseconds() )
return;
client->userinfoUpTimeout = Sys_Milliseconds() + USERINFO_UPDATE_COOLDOWN_MSEC;
info = Cmd_Argv( 1 );
if( !Info_Validate( info ) )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "%s", "Error: Invalid userinfo" );
return;
}
Q_strncpyz( client->userinfo, info, sizeof( client->userinfo ) );
SV_UserinfoChanged( client );
}
/*
==================
SV_ForceCvar_f_helper
Called internally by SV_ForceCvar_f
==================
*/
static void SV_ForceCvar_f_helper(client_t *cl) {
char *val;
int len = -1;
if (strlen(Cmd_Argv(3)) > 0) {
val = Info_ValueForKey(cl->userinfo, Cmd_Argv(2));
if (val[0])
len = strlen(Cmd_Argv(3)) - strlen(val) + strlen(cl->userinfo);
else
len = strlen(Cmd_Argv(2)) + strlen(Cmd_Argv(3)) + 2 + strlen(cl->userinfo);
}
if (len >= MAX_INFO_STRING)
SV_DropClient(cl, "userinfo string length exceeded");
else {
// In the case where Cmd_Argv(3) is "", the Info_SetValueForKey() call will
// actually just call Info_RemoveKey().
Info_SetValueForKey(cl->userinfo, Cmd_Argv(2), Cmd_Argv(3));
SV_UserinfoChanged(cl);
// call prog code to allow overrides
VM_Call(gvm, GAME_CLIENT_USERINFO_CHANGED, cl - svs.clients);
}
}
/*
==================
SV_DirectConnect
A "connect" OOB command has been received
==================
*/
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
MAC_STATIC client_t temp;
sharedEntity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
char *password;
int startIndex;
char *denied;
int count;
char *ip;
#ifdef _XBOX
bool reconnect = false;
#endif
Com_DPrintf ("SVC_DirectConnect ()\n");
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
version = atoi( Info_ValueForKey( userinfo, "protocol" ) );
if ( version != PROTOCOL_VERSION ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer uses protocol version %i.\n", PROTOCOL_VERSION );
Com_DPrintf (" rejected connect from version %i\n", version);
return;
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
/* This was preventing sv_reconnectlimit from working. It seems like commenting this
out has solved the problem. HOwever, if there is a future problem then it could
be this.
if ( cl->state == CS_FREE ) {
continue;
}
*/
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
if (( svs.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000)) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nReconnect rejected : too soon\n" );
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
break;
}
}
// don't let "ip" overflow userinfo string
if ( NET_IsLocalAddress (from) )
ip = "localhost";
else
ip = (char *)NET_AdrToString( from );
if( ( strlen( ip ) + strlen( userinfo ) + 4 ) >= MAX_INFO_STRING ) {
NET_OutOfBandPrint( NS_SERVER, from,
"print\nUserinfo string length exceeded. "
"Try removing setu cvars from your config.\n" );
return;
}
Info_SetValueForKey( userinfo, "ip", ip );
// see if the challenge is valid (LAN clients don't need to challenge)
if ( !NET_IsLocalAddress (from) ) {
int ping;
for (i=0 ; i<MAX_CHALLENGES ; i++) {
if (NET_CompareAdr(from, svs.challenges[i].adr)) {
if ( challenge == svs.challenges[i].challenge ) {
break; // good
}
}
}
if (i == MAX_CHALLENGES) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nNo or bad challenge for address.\n" );
return;
}
ping = svs.time - svs.challenges[i].pingTime;
Com_Printf( SE_GetString("MP_SVGAME", "CLIENT_CONN_WITH_PING"), i, ping);//"Client %i connecting with %i challenge ping\n", i, ping );
svs.challenges[i].connected = qtrue;
// never reject a LAN client based on ping
if ( !Sys_IsLANAddress( from ) ) {
if ( sv_minPing->value && ping < sv_minPing->value ) {
// don't let them keep trying until they get a big delay
NET_OutOfBandPrint( NS_SERVER, from, va("print\n%s\n", SE_GetString("MP_SVGAME", "SERVER_FOR_HIGH_PING")));//Server is for high pings only\n" );
Com_DPrintf (SE_GetString("MP_SVGAME", "CLIENT_REJECTED_LOW_PING"), i);//"Client %i rejected on a too low ping\n", i);
// reset the address otherwise their ping will keep increasing
// with each connect message and they'd eventually be able to connect
svs.challenges[i].adr.port = 0;
return;
}
if ( sv_maxPing->value && ping > sv_maxPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, va("print\n%s\n", SE_GetString("MP_SVGAME", "SERVER_FOR_LOW_PING")));//Server is for low pings only\n" );
Com_DPrintf (SE_GetString("MP_SVGAME", "CLIENT_REJECTED_HIGH_PING"), i);//"Client %i rejected on a too high ping\n", i);
return;
}
}
} else {
// force the "ip" info key to "localhost"
Info_SetValueForKey( userinfo, "ip", "localhost" );
}
newcl = &temp;
Com_Memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
#ifdef _XBOX
reconnect = true;
#endif
// VVFIXME - both SOF2 and Wolf remove this call, claiming it blows away the user's info
// disconnect the client from the game first so any flags the
// player might have are dropped
VM_Call( gvm, GAME_CLIENT_DISCONNECT, newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) ) {
startIndex = 0;
} else {
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = NULL;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
if ( NET_IsLocalAddress( from ) ) {
count = 0;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->netchan.remoteAddress.type == NA_BOT) {
count++;
}
}
// if they're all bots
if (count >= sv_maxclients->integer - startIndex) {
SV_DropClient(&svs.clients[sv_maxclients->integer - 1], "only bots on server");
newcl = &svs.clients[sv_maxclients->integer - 1];
}
else {
Com_Error( ERR_FATAL, "server is full on local connect\n" );
return;
}
}
else {
const char *SV_GetStringEdString(char *refSection, char *refName);
NET_OutOfBandPrint( NS_SERVER, from, va("print\n%s\n", SV_GetStringEdString("MP_SVGAME","SERVER_IS_FULL")));
Com_DPrintf ("Rejected a connection.\n");
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the challenge
newcl->challenge = challenge;
// save the address
Netchan_Setup (NS_SERVER, &newcl->netchan , from, qport);
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = (char *)VM_Call( gvm, GAME_CLIENT_CONNECT, clientNum, qtrue, qfalse ); // firstTime = qtrue
if ( denied ) {
// we can't just use VM_ArgPtr, because that is only valid inside a VM_Call
denied = (char *)VM_ExplicitArgPtr( gvm, (int)denied );
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", denied );
Com_DPrintf ("Game rejected a connection: %s.\n", denied);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint( NS_SERVER, from, "connectResponse" );
Com_DPrintf( "Going from CS_FREE to CS_CONNECTED for %s\n", newcl->name );
newcl->state = CS_CONNECTED;
newcl->nextSnapshotTime = svs.time;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
newcl->lastUserInfoChange = 0; //reset the delay
newcl->lastUserInfoCount = 0; //reset the count
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( svs.clients[i].state >= CS_CONNECTED ) {
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer ) {
SV_Heartbeat_f();
}
}
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
client_t temp;
sharedEntity_t *ent;
int clientNum;
int qport;
int challenge;
char *password;
int startIndex;
intptr_t denied;
int count;
Com_DPrintf ("SVC_DirectConnect ()\n");
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
if ( Q_stricmp( Info_ValueForKey( userinfo, "protocol" ), PROTOCOL_VERSION ) ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer uses protocol version "PROTOCOL_VERSION".\n" );
Com_DPrintf (" rejected connect from version %s\n", Info_ValueForKey( userinfo, "protocol" ));
return;
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
if (( svs.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000)) {
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
break;
}
}
// see if the challenge is valid (LAN clients don't need to challenge)
if ( !NET_IsLocalAddress (from) ) {
int ping;
for (i=0 ; i<MAX_CHALLENGES ; i++) {
if (NET_CompareAdr(from, svs.challenges[i].adr)) {
if ( challenge == svs.challenges[i].challenge ) {
break; // good
}
}
}
if (i == MAX_CHALLENGES) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nNo or bad challenge for address.\n" );
return;
}
// force the IP key/value pair so the game can filter based on ip
Info_SetValueForKey( userinfo, "ip", NET_AdrToString( from ) );
ping = svs.time - svs.challenges[i].pingTime;
Com_Printf( "Client %i connecting with %i challenge ping\n", i, ping );
svs.challenges[i].connected = qtrue;
// never reject a LAN client based on ping
if ( !Sys_IsLANAddress( from ) ) {
if ( sv_minPing->value && ping < sv_minPing->value ) {
// don't let them keep trying until they get a big delay
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer is for high pings only\n" );
Com_DPrintf ("Client %i rejected on a too low ping\n", i);
// reset the address otherwise their ping will keep increasing
// with each connect message and they'd eventually be able to connect
svs.challenges[i].adr.port = 0;
return;
}
if ( sv_maxPing->value && ping > sv_maxPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer is for low pings only\n" );
Com_DPrintf ("Client %i rejected on a too high ping\n", i);
return;
}
}
} else {
// force the "ip" info key to "localhost"
Info_SetValueForKey( userinfo, "ip", "localhost" );
}
newcl = &temp;
Com_Memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
// this doesn't work because it nukes the players userinfo
// // disconnect the client from the game first so any flags the
// // player might have are dropped
// VM_Call( gvm, GAME_CLIENT_DISCONNECT, newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) ) {
startIndex = 0;
} else {
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = NULL;
for ( i = startIndex; i < MAX_PLAYERS ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
if ( NET_IsLocalAddress( from ) ) {
count = 0;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->netchan.remoteAddress.type == NA_BOT) {
count++;
}
}
// if they're all bots
if (count >= sv_maxclients->integer - startIndex) {
SV_DropClient(&svs.clients[sv_maxclients->integer - 1], "only bots on server");
newcl = &svs.clients[sv_maxclients->integer - 1];
}
else {
Com_Error( ERR_FATAL, "server is full on local connect\n" );
return;
}
}
else {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer is full.\n" );
Com_DPrintf ("Rejected a connection.\n");
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the challenge
newcl->challenge = challenge;
// save the address
Netchan_Setup (NS_SERVER, &newcl->netchan , from, qport);
// init the netchan queue
newcl->netchan_end_queue = &newcl->netchan_start_queue;
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = VM_Call( gvm, GAME_CLIENT_CONNECT, clientNum, qtrue, qfalse ); // firstTime = qtrue
if ( denied ) {
// we can't just use VM_ArgPtr, because that is only valid inside a VM_Call
char *str = VM_ExplicitArgPtr( gvm, denied );
NET_OutOfBandPrint( NS_SERVER, from, "error\n%s\n", str );
Com_DPrintf ("Game rejected a connection: %s.\n", str);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint( NS_SERVER, from, "connectResponse" );
Com_DPrintf( "Going from CS_FREE to CS_CONNECTED for %s\n", newcl->name );
newcl->state = CS_CONNECTED;
newcl->nextSnapshotTime = svs.time;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( svs.clients[i].state >= CS_CONNECTED ) {
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer ) {
SV_Heartbeat_f();
}
}
/*
==================
SV_DirectConnect
A "connect" OOB command has been received
==================
*/
void SV_DirectConnect( netadr_t from, const Cmd::Args& args )
{
char userinfo[ MAX_INFO_STRING ];
int i;
client_t *cl, *newcl;
client_t temp;
sharedEntity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
const char *password;
int startIndex;
bool denied;
char reason[ MAX_STRING_CHARS ];
int count;
const char *ip;
#ifdef HAVE_GEOIP
const char *country = nullptr;
#endif
if ( args.Argc() < 2 )
{
return;
}
Log::Debug( "SVC_DirectConnect ()" );
Q_strncpyz( userinfo, args.Argv(1).c_str(), sizeof( userinfo ) );
// DHM - Nerve :: Update Server allows any protocol to connect
// NOTE TTimo: but we might need to store the protocol around for potential non http/ftp clients
version = atoi( Info_ValueForKey( userinfo, "protocol" ) );
if ( version != PROTOCOL_VERSION )
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\nServer uses protocol version %i (yours is %i).", PROTOCOL_VERSION, version );
Log::Debug( " rejected connect from version %i", version );
return;
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for ( i = 0, cl = svs.clients; i < sv_maxclients->integer; i++, cl++ )
{
// DHM - Nerve :: This check was allowing clients to reconnect after zombietime(2 secs)
//if ( cl->state == CS_FREE ) {
//continue;
//}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) )
{
if ( ( svs.time - cl->lastConnectTime )
< ( sv_reconnectlimit->integer * 1000 ) )
{
Log::Debug( "%s: reconnect rejected: too soon", NET_AdrToString( from ) );
return;
}
break;
}
}
if ( NET_IsLocalAddress( from ) )
{
ip = "localhost";
}
else
{
ip = NET_AdrToString( from );
}
if ( ( strlen( ip ) + strlen( userinfo ) + 4 ) >= MAX_INFO_STRING )
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from,
"print\nUserinfo string length exceeded. "
"Try removing setu cvars from your config." );
return;
}
Info_SetValueForKey( userinfo, "ip", ip, false );
// see if the challenge is valid (local clients don't need to challenge)
if ( !NET_IsLocalAddress( from ) )
{
int ping;
for ( i = 0; i < MAX_CHALLENGES; i++ )
{
if ( NET_CompareAdr( from, svs.challenges[ i ].adr ) )
{
if ( challenge == svs.challenges[ i ].challenge )
{
break; // good
}
}
}
if ( i == MAX_CHALLENGES )
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n[err_dialog]No or bad challenge for address." );
return;
}
// force the IP address key/value pair, so the game can filter based on it
Info_SetValueForKey( userinfo, "ip", NET_AdrToString( from ), false );
if ( svs.challenges[ i ].firstPing == 0 )
{
ping = svs.time - svs.challenges[ i ].pingTime;
svs.challenges[ i ].firstPing = ping;
}
else
{
ping = svs.challenges[ i ].firstPing;
}
#ifdef HAVE_GEOIP
country = NET_GeoIP_Country( &from );
if ( country )
{
Log::Notice( "Client %i connecting from %s with %i challenge ping\n", i, country, ping );
}
else
{
Log::Notice( "Client %i connecting from somewhere unknown with %i challenge ping\n", i, ping );
}
#else
Log::Notice( "Client %i connecting with %i challenge ping\n", i, ping );
#endif
svs.challenges[ i ].connected = true;
// never reject a LAN client based on ping
if ( !Sys_IsLANAddress( from ) )
{
if ( sv_minPing->value && ping < sv_minPing->value )
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n[err_dialog]Server is for high pings only" );
Log::Debug( "Client %i rejected on a too low ping", i );
return;
}
if ( sv_maxPing->value && ping > sv_maxPing->value )
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n[err_dialog]Server is for low pings only" );
Log::Debug( "Client %i rejected on a too high ping: %i", i, ping );
return;
}
}
}
else
{
// force the "ip" info key to "localhost"
Info_SetValueForKey( userinfo, "ip", "localhost", false );
}
newcl = &temp;
memset( newcl, 0, sizeof( client_t ) );
// if there is already a slot for this IP address, reuse it
for ( i = 0, cl = svs.clients; i < sv_maxclients->integer; i++, cl++ )
{
if ( cl->state == clientState_t::CS_FREE )
{
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) )
{
Log::Notice( "%s:reconnect\n", NET_AdrToString( from ) );
newcl = cl;
// this doesn't work because it nukes the players userinfo
// // disconnect the client from the game first so any flags the
// // player might have are dropped
// VM_Call( gvm, GAME_CLIENT_DISCONNECT, newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) )
{
startIndex = 0;
}
else
{
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = nullptr;
for ( i = startIndex; i < sv_maxclients->integer; i++ )
{
cl = &svs.clients[ i ];
if ( cl->state == clientState_t::CS_FREE )
{
newcl = cl;
break;
}
}
if ( !newcl )
{
if ( NET_IsLocalAddress( from ) )
{
count = 0;
for ( i = startIndex; i < sv_maxclients->integer; i++ )
{
cl = &svs.clients[ i ];
if ( SV_IsBot(cl) )
{
count++;
}
}
// if they're all bots
if ( count >= sv_maxclients->integer - startIndex )
{
SV_DropClient( &svs.clients[ sv_maxclients->integer - 1 ], "only bots on server" );
newcl = &svs.clients[ sv_maxclients->integer - 1 ];
}
else
{
Com_Error( errorParm_t::ERR_FATAL, "server is full on local connect" );
}
}
else
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n%s", sv_fullmsg->string );
Log::Debug( "Rejected a connection." );
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = std::move(temp);
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
ent->r.svFlags = 0;
#ifdef HAVE_GEOIP
if ( country )
{
Info_SetValueForKey( userinfo, "geoip", country, false );
}
#endif
// save the challenge
newcl->challenge = challenge;
// save the address
Netchan_Setup( netsrc_t::NS_SERVER, &newcl->netchan, from, qport );
// init the netchan queue
// Save the pubkey
Q_strncpyz( newcl->pubkey, Info_ValueForKey( userinfo, "pubkey" ), sizeof( newcl->pubkey ) );
Info_RemoveKey( userinfo, "pubkey", false );
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof( newcl->userinfo ) );
// get the game a chance to reject this connection or modify the userinfo
denied = gvm.GameClientConnect( reason, sizeof( reason ), clientNum, true, false ); // firstTime = true
if ( denied )
{
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n[err_dialog]%s", reason );
Log::Debug( "Game rejected a connection: %s.", reason );
return;
}
SV_UserinfoChanged( newcl );
// DHM - Nerve :: Clear out firstPing now that client is connected
svs.challenges[ i ].firstPing = 0;
// send the connect packet to the client
NET_OutOfBandPrint( netsrc_t::NS_SERVER, from, "connectResponse" );
Log::Debug( "Going from CS_FREE to CS_CONNECTED for %s", newcl->name );
newcl->state = clientState_t::CS_CONNECTED;
newcl->nextSnapshotTime = svs.time;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for ( i = 0, cl = svs.clients; i < sv_maxclients->integer; i++, cl++ )
{
if ( svs.clients[ i ].state >= clientState_t::CS_CONNECTED )
{
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer )
{
SV_Heartbeat_f();
}
}
/**
* @brief The current net_message is parsed for the given client
*/
void SV_ExecuteClientMessage (client_t * cl, int cmd, struct dbuffer *msg)
{
if (cmd == -1)
return;
switch (cmd) {
default:
Com_Printf("SV_ExecuteClientMessage: unknown command char '%d'\n", cmd);
SV_DropClient(cl, "Unknown command\n");
return;
case clc_nop:
break;
case clc_ack:
cl->lastmessage = svs.realtime;
break;
case clc_userinfo:
NET_ReadString(msg, cl->userinfo, sizeof(cl->userinfo));
Com_DPrintf(DEBUG_SERVER, "userinfo from client: %s\n", cl->userinfo);
SV_UserinfoChanged(cl);
break;
case clc_stringcmd:
{
char str[1024];
NET_ReadString(msg, str, sizeof(str));
Com_DPrintf(DEBUG_SERVER, "stringcmd from client: %s\n", str);
SV_ExecuteUserCommand(cl, str);
if (cl->state == cs_free)
return; /* disconnect command */
break;
}
case clc_action:
/* client actions are handled by the game module */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientAction(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
break;
case clc_endround:
/* player wants to end round */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientEndRound(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
break;
case clc_teaminfo:
/* player sends team info */
/* actors spawn accordingly */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientTeamInfo(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
SV_SetClientState(cl, cs_spawned);
break;
case clc_initactorstates:
/* player sends team info */
/* actors spawn accordingly */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientInitActorStates(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
break;
}
}
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
client_t temp;
sharedEntity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
char *password;
int startIndex;
intptr_t denied;
int count;
char *ip;
const char *stringEd;
#ifdef LEGACY_PROTOCOL
qboolean compat = qfalse;
#endif
Com_DPrintf ("SVC_DirectConnect ()\n");
// Check whether this client is banned.
if(SV_IsBanned(&from, qfalse))
{
NET_OutOfBandPrint(NS_SERVER, from, "print\nYou are banned from this server.\n");
return;
}
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
version = atoi(Info_ValueForKey(userinfo, "protocol"));
#ifdef LEGACY_PROTOCOL
if(version > 0 && com_legacyprotocol->integer == version)
compat = qtrue;
else
#endif
{
if(version != com_protocol->integer)
{
NET_OutOfBandPrint(NS_SERVER, from, "print\nServer uses protocol version %i "
"(yours is %i).\n", com_protocol->integer, version);
Com_DPrintf(" rejected connect from version %i\n", version);
return;
}
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
if (( svs.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000)) {
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
break;
}
}
// don't let "ip" overflow userinfo string
if ( NET_IsLocalAddress (from) )
ip = "localhost";
else
ip = (char *)NET_AdrToString( from );
if( ( strlen( ip ) + strlen( userinfo ) + 4 ) >= MAX_INFO_STRING ) {
NET_OutOfBandPrint( NS_SERVER, from,
"print\nUserinfo string length exceeded. "
"Try removing setu cvars from your config.\n" );
return;
}
Info_SetValueForKey( userinfo, "ip", ip );
// see if the challenge is valid (LAN clients don't need to challenge)
if (!NET_IsLocalAddress(from))
{
int ping;
challenge_t *challengeptr;
for (i=0; i<MAX_CHALLENGES; i++)
{
if (NET_CompareAdr(from, svs.challenges[i].adr))
{
if(challenge == svs.challenges[i].challenge)
break;
}
}
if (i == MAX_CHALLENGES)
{
NET_OutOfBandPrint( NS_SERVER, from, "print\nNo or bad challenge for your address.\n" );
return;
}
challengeptr = &svs.challenges[i];
if(challengeptr->wasrefused)
{
// Return silently, so that error messages written by the server keep being displayed.
return;
}
ping = svs.time - challengeptr->pingTime;
// never reject a LAN client based on ping
if ( !Sys_IsLANAddress( from ) ) {
if ( sv_minPing->value && ping < sv_minPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s", SV_StringEdString("SERVER_FOR_HIGH_PING") );
stringEd = SV_GetString("CLIENT_REJECTED_LOW_PING");
Com_DPrintf (stringEd, i);
challengeptr->wasrefused = qtrue;
return;
}
if ( sv_maxPing->value && ping > sv_maxPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s", SV_StringEdString("SERVER_FOR_LOW_PING") );
stringEd = SV_GetString("CLIENT_REJECTED_LOW_PING");
Com_DPrintf (stringEd, i);
challengeptr->wasrefused = qtrue;
return;
}
}
stringEd = SV_GetString("CLIENT_CONN_WITH_PING");
Com_Printf(stringEd, i, ping);
challengeptr->connected = qtrue;
}
newcl = &temp;
Com_Memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
// this doesn't work because it nukes the players userinfo
// // disconnect the client from the game first so any flags the
// // player might have are dropped
// VM_Call( gvm, GAME_CLIENT_DISCONNECT, newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) ) {
startIndex = 0;
} else {
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = NULL;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
if ( NET_IsLocalAddress( from ) ) {
count = 0;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->netchan.remoteAddress.type == NA_BOT) {
count++;
}
}
// if they're all bots
if (count >= sv_maxclients->integer - startIndex) {
SV_DropClient(&svs.clients[sv_maxclients->integer - 1], "only bots on server");
newcl = &svs.clients[sv_maxclients->integer - 1];
}
else {
Com_Error( ERR_FATAL, "server is full on local connect" );
return;
}
}
else {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", SV_StringEdString("SERVER_IS_FULL") );
Com_DPrintf ("Rejected a connection.\n");
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the challenge
newcl->challenge = challenge;
// save the address
#ifdef LEGACY_PROTOCOL
newcl->compat = compat;
Netchan_Setup(NS_SERVER, &newcl->netchan, from, qport, challenge, compat);
#else
Netchan_Setup(NS_SERVER, &newcl->netchan, from, qport, challenge, qfalse);
#endif
// init the netchan queue
newcl->netchan_end_queue = &newcl->netchan_start_queue;
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = VM_Call( gvm, GAME_CLIENT_CONNECT, clientNum, qtrue, qfalse ); // firstTime = qtrue
if ( denied ) {
// we can't just use VM_ArgPtr, because that is only valid inside a VM_Call
char *str = VM_ExplicitArgPtr( gvm, denied );
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", str );
Com_DPrintf ("Game rejected a connection: %s.\n", str);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint(NS_SERVER, from, "connectResponse %d", challenge);
Com_DPrintf( "Going from CS_FREE to CS_CONNECTED for %s\n", newcl->name );
newcl->state = CS_CONNECTED;
newcl->lastSnapshotTime = 0;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( svs.clients[i].state >= CS_CONNECTED ) {
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer ) {
SV_Heartbeat_f();
}
}
/*
* ==================
* SVC_DirectConnect
*
* A connection request that did not come from the master
* ==================
*/
void SVC_DirectConnect(void)
{
char userinfo[MAX_INFO_STRING];
netadr_t adr;
int i;
client_t *cl, *newcl;
client_t temp;
edict_t *ent;
int edictnum;
int version;
int qport;
int challenge;
int previousclients; // rich: connection limit per IP
adr = net_from;
Com_DPrintf("SVC_DirectConnect ()\n");
version = atoi(Cmd_Argv(1));
if (version != PROTOCOL_VERSION)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nServer is version %4.2f.\n", VERSION);
Com_DPrintf(" rejected connect from version %i\n", version);
return;
}
qport = atoi(Cmd_Argv(2));
challenge = atoi(Cmd_Argv(3));
// r1ch: limit connections from a single IP
previousclients = 0;
for (i = 0, cl = svs.clients; i < (int)maxclients->value; i++, cl++)
{
if (cl->state == cs_free)
{
continue;
}
if (NET_CompareBaseAdr(adr, cl->netchan.remote_address))
{
// r1ch: zombies are less dangerous
if (cl->state == cs_zombie)
{
previousclients++;
}
else
{
previousclients += 2;
}
}
}
if (previousclients >= (int)sv_iplimit->value * 2)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nToo many connections from your host.\n");
Com_DPrintf(" too many connections\n");
return;
}
// end r1ch fix
strncpy(userinfo, Cmd_Argv(4), sizeof(userinfo) - 1);
userinfo[sizeof(userinfo) - 1] = 0;
// force the IP key/value pair so the game can filter based on ip
Info_SetValueForKey(userinfo, "ip", NET_AdrToString(net_from));
// attractloop servers are ONLY for local clients
if (sv.attractloop)
{
if (!NET_IsLocalAddress(adr))
{
Com_Printf("Remote connect in attract loop. Ignored.\n");
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nConnection refused.\n");
return;
}
}
// see if the challenge is valid
if (!NET_IsLocalAddress(adr))
{
for (i = 0; i < MAX_CHALLENGES; i++)
{
if (NET_CompareBaseAdr(net_from, svs.challenges[i].adr))
{
if (challenge == svs.challenges[i].challenge)
{
break; // good
}
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nBad challenge.\n");
return;
}
}
if (i == MAX_CHALLENGES)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nNo challenge for address.\n");
return;
}
}
newcl = &temp;
memset(newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i = 0, cl = svs.clients; i < maxclients->value; i++, cl++)
{
if (cl->state == cs_free)
{
continue;
}
if (NET_CompareBaseAdr(adr, cl->netchan.remote_address) &&
((cl->netchan.qport == qport) ||
(adr.port == cl->netchan.remote_address.port)))
{
if (!NET_IsLocalAddress(adr) && ((svs.realtime - cl->lastconnect) < ((int)sv_reconnect_limit->value * 1000)))
{
Com_DPrintf("%s:reconnect rejected : too soon\n", NET_AdrToString(adr));
return;
}
// r1ch: !! fix nasty bug where non-disconnected clients (from dropped disconnect
// packets) could be overwritten!
if (cl->state != cs_zombie)
{
Com_DPrintf(" client already found\n");
// If we legitly get here, spoofed udp isn't possible (passed challenge) and client addr/port combo
// is exactly the same, so we can assume its really a dropped/crashed client. i hope...
Com_Printf("Dropping %s, ghost reconnect\n", cl->name);
SV_DropClient(cl);
}
// end r1ch fix
Com_Printf("%s:reconnect\n", NET_AdrToString(adr));
SV_CleanClient(cl); // r1ch: clean up last client data
newcl = cl;
goto gotnewcl;
}
}
// find a client slot
newcl = NULL;
for (i = 0, cl = svs.clients; i < maxclients->value; i++, cl++)
{
if (cl->state == cs_free)
{
newcl = cl;
break;
}
}
if (!newcl)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nServer is full.\n");
Com_DPrintf("Rejected a connection.\n");
return;
}
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
sv_client = newcl;
edictnum = (newcl - svs.clients) + 1;
ent = EDICT_NUM(edictnum);
newcl->edict = ent;
newcl->challenge = challenge; // save challenge for checksumming
// get the game a chance to reject this connection or modify the userinfo
if (!(ge->ClientConnect(ent, userinfo)))
{
if (*Info_ValueForKey(userinfo, "rejmsg"))
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\n%s\nConnection refused.\n",
Info_ValueForKey(userinfo, "rejmsg"));
}
else
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nConnection refused.\n");
}
Com_DPrintf("Game rejected a connection.\n");
return;
}
// parse some info from the info strings
strncpy(newcl->userinfo, userinfo, sizeof(newcl->userinfo) - 1);
SV_UserinfoChanged(newcl);
// send the connect packet to the client
Netchan_OutOfBandPrint(NS_SERVER, adr, "client_connect");
Netchan_Setup(NS_SERVER, &newcl->netchan, adr, qport);
newcl->state = cs_connected;
SZ_Init(&newcl->datagram, newcl->datagram_buf, sizeof(newcl->datagram_buf));
newcl->datagram.allowoverflow = true;
newcl->lastmessage = svs.realtime; // don't timeout
newcl->lastconnect = svs.realtime;
}
/*
==================
SV_DirectConnect
A "connect" OOB command has been received
==================
*/
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
client_t temp;
sharedEntity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
char *password;
int startIndex;
char *denied;
int count;
char *ip;
Com_DPrintf ("SVC_DirectConnect ()\n");
// Check whether this client is banned.
if ( SV_IsBanned( &from, qfalse ) )
{
NET_OutOfBandPrint( NS_SERVER, from, "print\nYou are banned from this server.\n" );
Com_DPrintf( " rejected connect from %s (banned)\n", NET_AdrToString(from) );
return;
}
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
version = atoi( Info_ValueForKey( userinfo, "protocol" ) );
if ( version != PROTOCOL_VERSION ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer uses protocol version %i (yours is %i).\n", PROTOCOL_VERSION, version );
Com_DPrintf (" rejected connect from version %i\n", version);
return;
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
/* This was preventing sv_reconnectlimit from working. It seems like commenting this
out has solved the problem. HOwever, if there is a future problem then it could
be this.
if ( cl->state == CS_FREE ) {
continue;
}
*/
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
if (( svs.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000)) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nReconnect rejected : too soon\n" );
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
break;
}
}
// don't let "ip" overflow userinfo string
if ( NET_IsLocalAddress (from) )
ip = "localhost";
else
ip = (char *)NET_AdrToString( from );
if( ( strlen( ip ) + strlen( userinfo ) + 4 ) >= MAX_INFO_STRING ) {
NET_OutOfBandPrint( NS_SERVER, from,
"print\nUserinfo string length exceeded. "
"Try removing setu cvars from your config.\n" );
return;
}
Info_SetValueForKey( userinfo, "ip", ip );
// see if the challenge is valid (localhost clients don't need to challenge)
if (!NET_IsLocalAddress(from))
{
// Verify the received challenge against the expected challenge
if (!SV_VerifyChallenge(challenge, from))
{
NET_OutOfBandPrint( NS_SERVER, from, "print\nIncorrect challenge for your address.\n" );
return;
}
}
newcl = &temp;
Com_Memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
// VVFIXME - both SOF2 and Wolf remove this call, claiming it blows away the user's info
// disconnect the client from the game first so any flags the
// player might have are dropped
GVM_ClientDisconnect( newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) ) {
startIndex = 0;
} else {
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = NULL;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
if ( NET_IsLocalAddress( from ) ) {
count = 0;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->netchan.remoteAddress.type == NA_BOT) {
count++;
}
}
// if they're all bots
if (count >= sv_maxclients->integer - startIndex) {
SV_DropClient(&svs.clients[sv_maxclients->integer - 1], "only bots on server");
newcl = &svs.clients[sv_maxclients->integer - 1];
}
else {
Com_Error( ERR_FATAL, "server is full on local connect\n" );
return;
}
}
else {
const char *SV_GetStringEdString(char *refSection, char *refName);
NET_OutOfBandPrint( NS_SERVER, from, va("print\n%s\n", SV_GetStringEdString("MP_SVGAME","SERVER_IS_FULL")));
Com_DPrintf ("Rejected a connection.\n");
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the challenge
newcl->challenge = challenge;
// save the address
Netchan_Setup (NS_SERVER, &newcl->netchan , from, qport);
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = GVM_ClientConnect( clientNum, qtrue, qfalse ); // firstTime = qtrue
if ( denied ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", denied );
Com_DPrintf ("Game rejected a connection: %s.\n", denied);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint( NS_SERVER, from, "connectResponse" );
Com_DPrintf( "Going from CS_FREE to CS_CONNECTED for %s\n", newcl->name );
newcl->state = CS_CONNECTED;
newcl->nextSnapshotTime = svs.time;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
newcl->lastUserInfoChange = 0; //reset the delay
newcl->lastUserInfoCount = 0; //reset the count
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( svs.clients[i].state >= CS_CONNECTED ) {
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer ) {
SV_Heartbeat_f();
}
}
/*
==================
SV_DirectConnect
A "connect" OOB command has been received
==================
*/
void SV_DirectConnect( netadr_t from, const Cmd::Args& args )
{
if ( args.Argc() < 2 )
{
return;
}
Log::Debug( "SVC_DirectConnect ()" );
InfoMap userinfo = InfoStringToMap(args.Argv(1));
// DHM - Nerve :: Update Server allows any protocol to connect
// NOTE TTimo: but we might need to store the protocol around for potential non http/ftp clients
int version = atoi( userinfo["protocol"].c_str() );
if ( version != PROTOCOL_VERSION )
{
Net::OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\nServer uses protocol version %i (yours is %i).", PROTOCOL_VERSION, version );
Log::Debug( " rejected connect from version %i", version );
return;
}
int qport = atoi( userinfo["qport"].c_str() );
auto clients_begin = svs.clients;
auto clients_end = clients_begin + sv_maxclients->integer;
client_t* reconnecting = std::find_if(clients_begin, clients_end,
[&from, qport](const client_t& client)
{
return NET_CompareBaseAdr( from, client.netchan.remoteAddress )
&& ( client.netchan.qport == qport || from.port == client.netchan.remoteAddress.port );
}
);
if ( reconnecting != clients_end &&
svs.time - reconnecting->lastConnectTime < sv_reconnectlimit->integer * 1000 )
{
Log::Debug( "%s: reconnect rejected: too soon", NET_AdrToString( from ) );
return;
}
if ( NET_IsLocalAddress( from ) )
{
userinfo["ip"] = "loopback";
}
else
{
// see if the challenge is valid (local clients don't need to challenge)
Challenge::Duration ping_duration;
if ( !ChallengeManager::MatchString( from, userinfo["challenge"], &ping_duration ) )
{
Net::OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n[err_dialog]No or bad challenge for address." );
return;
}
userinfo["ip"] = NET_AdrToString( from );
}
client_t *new_client = nullptr;
// if there is already a slot for this IP address, reuse it
if ( reconnecting != clients_end )
{
Log::Notice( "%s:reconnect\n", NET_AdrToString( from ) );
new_client = reconnecting;
}
else
{
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
int startIndex = 0;
if ( userinfo["password"] != sv_privatePassword->string )
{
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
new_client = std::find_if(clients_begin, clients_end,
[](const client_t& client) {
return client.state == clientState_t::CS_FREE;
});
if ( new_client == clients_end )
{
if ( NET_IsLocalAddress( from ) )
{
int count = std::count_if(clients_begin+startIndex, clients_end,
[](const client_t& client) { return SV_IsBot(&client); }
);
// if they're all bots
if ( count >= sv_maxclients->integer - startIndex )
{
SV_DropClient( &svs.clients[ sv_maxclients->integer - 1 ], "only bots on server" );
new_client = &svs.clients[ sv_maxclients->integer - 1 ];
}
else
{
Com_Error( errorParm_t::ERR_FATAL, "server is full on local connect" );
}
}
else
{
Net::OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n%s", sv_fullmsg->string );
Log::Debug( "Rejected a connection." );
return;
}
}
}
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
memset( new_client, 0, sizeof( client_t ) );
int clientNum = new_client - svs.clients;
#ifdef HAVE_GEOIP
const char * country = NET_GeoIP_Country( &from );
if ( country )
{
Log::Notice( "Client %i connecting from %s\n", clientNum, country );
userinfo["geoip"] = country;
}
else
{
Log::Notice( "Client %i connecting from somewhere unknown\n", clientNum );
}
#else
Log::Notice( "Client %i connecting\n", clientNum );
#endif
new_client->gentity = SV_GentityNum( clientNum );
new_client->gentity->r.svFlags = 0;
// save the address
Netchan_Setup( netsrc_t::NS_SERVER, &new_client->netchan, from, qport );
// init the netchan queue
// Save the pubkey
Q_strncpyz( new_client->pubkey, userinfo["pubkey"].c_str(), sizeof( new_client->pubkey ) );
userinfo.erase("pubkey");
// save the userinfo
Q_strncpyz( new_client->userinfo, InfoMapToString(userinfo).c_str(), sizeof( new_client->userinfo ) );
// get the game a chance to reject this connection or modify the userinfo
char reason[ MAX_STRING_CHARS ];
if ( gvm.GameClientConnect( reason, sizeof( reason ), clientNum, true, false ) )
{
Net::OutOfBandPrint( netsrc_t::NS_SERVER, from, "print\n[err_dialog]%s", reason );
Log::Debug( "Game rejected a connection: %s.", reason );
return;
}
SV_UserinfoChanged( new_client );
// send the connect packet to the client
Net::OutOfBandPrint( netsrc_t::NS_SERVER, from, "connectResponse" );
Log::Debug( "Going from CS_FREE to CS_CONNECTED for %s", new_client->name );
new_client->state = clientState_t::CS_CONNECTED;
new_client->nextSnapshotTime = svs.time;
new_client->lastPacketTime = svs.time;
new_client->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
new_client->gamestateMessageNum = -1;
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
int count = std::count_if(clients_begin, clients_end,
[](const client_t& client) {
return client.state >= clientState_t::CS_CONNECTED;
});
if ( count == 1 || count == sv_maxclients->integer )
{
SV_Heartbeat_f();
}
}
/*
* A connection request that did not come from the master
*/
void
SVC_DirectConnect(void)
{
char userinfo[MAX_INFO_STRING];
netadr_t adr;
int i;
client_t *cl, *newcl;
client_t temp;
edict_t *ent;
int edictnum;
int version;
int qport;
int challenge;
adr = net_from;
Com_DPrintf("SVC_DirectConnect ()\n");
version = (int)strtol(Cmd_Argv(1), (char **)NULL, 10);
if (version != PROTOCOL_VERSION)
{
Netchan_OutOfBandPrint(NS_SERVER, adr,
"print\nServer is version %s.\n", YQ2VERSION);
Com_DPrintf(" rejected connect from version %i\n", version);
return;
}
qport = (int)strtol(Cmd_Argv(2), (char **)NULL, 10);
challenge = (int)strtol(Cmd_Argv(3), (char **)NULL, 10);
Q_strlcpy(userinfo, Cmd_Argv(4), sizeof(userinfo));
/* force the IP key/value pair so the game can filter based on ip */
Info_SetValueForKey(userinfo, "ip", NET_AdrToString(net_from));
/* attractloop servers are ONLY for local clients */
if (sv.attractloop)
{
if (!NET_IsLocalAddress(adr))
{
Com_Printf("Remote connect in attract loop. Ignored.\n");
Netchan_OutOfBandPrint(NS_SERVER, adr,
"print\nConnection refused.\n");
return;
}
}
/* see if the challenge is valid */
if (!NET_IsLocalAddress(adr))
{
for (i = 0; i < MAX_CHALLENGES; i++)
{
if (NET_CompareBaseAdr(net_from, svs.challenges[i].adr))
{
if (challenge == svs.challenges[i].challenge)
{
break; /* good */
}
Netchan_OutOfBandPrint(NS_SERVER, adr,
"print\nBad challenge.\n");
return;
}
}
if (i == MAX_CHALLENGES)
{
Netchan_OutOfBandPrint(NS_SERVER, adr,
"print\nNo challenge for address.\n");
return;
}
}
newcl = &temp;
memset(newcl, 0, sizeof(client_t));
/* if there is already a slot for this ip, reuse it */
for (i = 0, cl = svs.clients; i < maxclients->value; i++, cl++)
{
if (cl->state < cs_connected)
{
continue;
}
if (NET_CompareBaseAdr(adr, cl->netchan.remote_address) &&
((cl->netchan.qport == qport) ||
(adr.port == cl->netchan.remote_address.port)))
{
if (!NET_IsLocalAddress(adr))
{
Com_DPrintf("%s:reconnect rejected : too soon\n",
NET_AdrToString(adr));
return;
}
Com_Printf("%s:reconnect\n", NET_AdrToString(adr));
newcl = cl;
goto gotnewcl;
}
}
/* find a client slot */
newcl = NULL;
for (i = 0, cl = svs.clients; i < maxclients->value; i++, cl++)
{
if (cl->state == cs_free)
{
newcl = cl;
break;
}
}
if (!newcl)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nServer is full.\n");
Com_DPrintf("Rejected a connection.\n");
return;
}
gotnewcl:
/* build a new connection accept the new client this
is the only place a client_t is ever initialized */
*newcl = temp;
sv_client = newcl;
edictnum = (newcl - svs.clients) + 1;
ent = EDICT_NUM(edictnum);
newcl->edict = ent;
newcl->challenge = challenge; /* save challenge for checksumming */
/* get the game a chance to reject this connection or modify the userinfo */
if (!(ge->ClientConnect(ent, userinfo)))
{
if (*Info_ValueForKey(userinfo, "rejmsg"))
{
Netchan_OutOfBandPrint(NS_SERVER, adr,
"print\n%s\nConnection refused.\n",
Info_ValueForKey(userinfo, "rejmsg"));
}
else
{
Netchan_OutOfBandPrint(NS_SERVER, adr,
"print\nConnection refused.\n");
}
Com_DPrintf("Game rejected a connection.\n");
return;
}
/* parse some info from the info strings */
Q_strlcpy(newcl->userinfo, userinfo, sizeof(newcl->userinfo));
SV_UserinfoChanged(newcl);
/* send the connect packet to the client */
Netchan_OutOfBandPrint(NS_SERVER, adr, "client_connect");
Netchan_Setup(NS_SERVER, &newcl->netchan, adr, qport);
newcl->state = cs_connected;
SZ_Init(&newcl->datagram, newcl->datagram_buf, sizeof(newcl->datagram_buf));
newcl->datagram.allowoverflow = true;
newcl->lastmessage = svs.realtime; /* don't timeout */
newcl->lastconnect = svs.realtime;
}
/*
* SV_ClientConnect
* accept the new client
* this is the only place a client_t is ever initialized
*/
qboolean SV_ClientConnect( const socket_t *socket, const netadr_t *address, client_t *client, char *userinfo,
int game_port, int challenge, qboolean fakeClient, qboolean tvClient,
unsigned int ticket_id, int session_id )
{
int i;
edict_t *ent;
int edictnum;
edictnum = ( client - svs.clients ) + 1;
ent = EDICT_NUM( edictnum );
// give mm a chance to reject if the server is locked ready for mm
// must be called before ge->ClientConnect
// ch : rly ignore fakeClient and tvClient here?
session_id = SV_MM_ClientConnect( address, userinfo, ticket_id, session_id );
if( !session_id )
return qfalse;
// we need to set local sessions to userinfo ourselves
if( session_id < 0 )
Info_SetValueForKey( userinfo, "cl_mm_session", va("%d", session_id) );
// get the game a chance to reject this connection or modify the userinfo
if( !ge->ClientConnect( ent, userinfo, fakeClient, tvClient ) )
return qfalse;
// the connection is accepted, set up the client slot
memset( client, 0, sizeof( *client ) );
client->edict = ent;
client->challenge = challenge; // save challenge for checksumming
client->tvclient = tvClient;
client->mm_session = session_id;
client->mm_ticket = ticket_id;
if( socket )
{
switch( socket->type )
{
#ifdef TCP_ALLOW_CONNECT
case SOCKET_TCP:
client->reliable = qtrue;
client->individual_socket = qtrue;
client->socket = *socket;
break;
#endif
case SOCKET_UDP:
case SOCKET_LOOPBACK:
client->reliable = qfalse;
client->individual_socket = qfalse;
client->socket.open = qfalse;
break;
default:
assert( qfalse );
}
}
else
{
assert( fakeClient );
client->reliable = qfalse;
client->individual_socket = qfalse;
client->socket.open = qfalse;
}
SV_ClientResetCommandBuffers( client );
// reset timeouts
client->lastPacketReceivedTime = svs.realtime;
client->lastconnect = svs.realtime;
// init the connection
client->state = CS_CONNECTING;
if( fakeClient )
{
client->netchan.remoteAddress.type = NA_NOTRANSMIT; // fake-clients can't transmit
// TODO: if mm_debug_reportbots
Info_SetValueForKey( userinfo, "cl_mm_session", va("%d", client->mm_session) );
}
else
{
if( client->individual_socket )
{
Netchan_Setup( &client->netchan, &client->socket, address, game_port );
}
else
{
Netchan_Setup( &client->netchan, socket, address, game_port );
}
}
// create default rating for the client and current gametype
ge->AddDefaultRating( ent, NULL );
// parse some info from the info strings
Q_strncpyz( client->userinfo, userinfo, sizeof( client->userinfo ) );
SV_UserinfoChanged( client );
// generate session id
for( i = 0; i < sizeof( svs.clients[0].session ) - 1; i++ ) {
const unsigned char symbols[65] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
client->session[i] = symbols[rand() % (sizeof( symbols )-1)];
}
client->session[i] = '\0';
return qtrue;
}
/*
==================
cDirectConnect
A connection request that did not come from the master
==================
*/
static void cDirectConnect(int argc, char **argv)
{
int i;
netadr_t adr = net_from;
Com_DPrintf("SVC_DirectConnect()\n");
int version = atoi(argv[1]);
if (version != PROTOCOL_VERSION)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nServer is version %4.2f.\n", VERSION);
Com_DPrintf(" rejected connect from version %d\n", version);
return;
}
int port = atoi(argv[2]);
int challenge = atoi(argv[3]);
// get userinfo
char userinfo[MAX_INFO_STRING];
appStrncpyz(userinfo, argv[4], sizeof(userinfo));
// force the IP key/value pair to be in userinfo (for game-side IP filters)
Info_SetValueForKey(userinfo, "ip", NET_AdrToString(&net_from));
// attractloop servers are ONLY for local clients
if (sv.attractloop)
{
if (!NET_IsLocalAddress(&adr))
{
appPrintf("Remote connect in attract loop. Ignored.\n");
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nConnection refused.\n");
return;
}
}
// see if the challenge is valid
if (!NET_IsLocalAddress(&adr))
{
for (i = 0; i < MAX_CHALLENGES; i++)
if (NET_CompareBaseAdr(&net_from, &svs.challenges[i].adr))
{
if (challenge == svs.challenges[i].challenge)
break; // good
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nBad challenge.\n");
return;
}
if (i == MAX_CHALLENGES)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nNo challenge for address.\n");
return;
}
}
client_t temp, *cl;
memset(&temp, 0, sizeof(client_t));
client_t *newcl = NULL;
// if there is already a slot for this ip, reuse it
for (i = 0, cl = svs.clients; i < sv_maxclients->integer; i++,cl++)
{
if (cl->state == cs_free) continue;
if (NET_CompareBaseAdr(&adr, &cl->netchan.remote_address) &&
(cl->netchan.port == port || adr.port == cl->netchan.remote_address.port))
{
if (!NET_IsLocalAddress(&adr) && (svs.realtime - cl->lastconnect) < (sv_reconnect_limit->integer * 1000))
{
Com_DPrintf("%s:reconnect rejected : too soon\n", NET_AdrToString(&adr));
return;
}
appPrintf("%s:reconnect\n", NET_AdrToString(&adr));
newcl = cl;
break;
}
}
// find a client slot
if (!newcl)
{
for (i = 0, cl = svs.clients; i < sv_maxclients->integer; i++,cl++)
if (cl->state == cs_free)
{
newcl = cl;
break;
}
}
if (!newcl)
{
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nServer is full.\n");
Com_DPrintf("Rejected a connection.\n");
return;
}
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
sv_client = newcl;
int edictnum = (newcl-svs.clients)+1;
edict_t *ent = EDICT_NUM(edictnum);
newcl->edict = ent;
newcl->challenge = challenge; // save challenge for checksumming
// get the game a chance to reject this connection or modify the userinfo
qboolean result;
guardGame(ge.ClientConnect);
result = ge->ClientConnect(ent, userinfo);
unguardGame;
if (!result)
{
if (*Info_ValueForKey(userinfo, "rejmsg"))
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\n%s\nConnection refused.\n",
Info_ValueForKey(userinfo, "rejmsg"));
else
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\nConnection refused.\n" );
Com_DPrintf("Game rejected a connection.\n");
return;
}
// parse some info from the info strings
newcl->Userinfo = userinfo;
SV_UserinfoChanged(newcl);
// check if client trying to connect with a new protocol
newcl->newprotocol = !strcmp(argv [5], NEW_PROTOCOL_ID) && sv_extProtocol->integer;
// send the connect packet to the client
if (newcl->newprotocol)
{
int ver = atoi(argv[6]);
if (ver != NEW_PROTOCOL_VERSION)
{
//?? we may also perform extended protocol checking by adding "[cl_]extprotocol" to userinfo
Com_DPrintf("Client used extended protocol %d != "STR(NEW_PROTOCOL_VERSION)"\n", ver);
if (ver < NEW_PROTOCOL_VERSION)
Netchan_OutOfBandPrint(NS_SERVER, adr, "print\n"
S_YELLOW"Server provides newer version of extended protocol\nPlease upgrade your client\n" );
newcl->newprotocol = false;
}
}
if (newcl->newprotocol)
{
Com_DPrintf("Connecting client using extended protocol\n");
Netchan_OutOfBandPrint(NS_SERVER, adr, "client_connect "NEW_PROTOCOL_ID" "STR(NEW_PROTOCOL_VERSION));
}
else
Netchan_OutOfBandPrint(NS_SERVER, adr, "client_connect");
newcl->netchan.Setup(NS_SERVER, adr, port);
newcl->maxPacketSize = cl->newprotocol ? MAX_MSGLEN : MAX_MSGLEN_OLD;
newcl->state = cs_connected;
newcl->datagram.Init(newcl->datagram_buf, sizeof(newcl->datagram_buf));
newcl->datagram.allowoverflow = true;
newcl->lastmessage = svs.realtime; // don't timeout
newcl->lastconnect = svs.realtime;
}
/**
* @brief A connection request that did not come from the master
* @sa CL_ConnectionlessPacket
*/
static void SVC_DirectConnect (struct net_stream *stream)
{
char userinfo[MAX_INFO_STRING];
client_t *cl;
player_t *player;
int playernum;
int version;
bool connected;
char buf[256];
const char *peername = NET_StreamPeerToName(stream, buf, sizeof(buf), false);
Com_DPrintf(DEBUG_SERVER, "SVC_DirectConnect()\n");
if (sv->started || sv->spawned) {
Com_Printf("rejected connect because match is already running\n");
NET_OOB_Printf(stream, "print\nGame has started already.\n");
return;
}
version = atoi(Cmd_Argv(1));
if (version != PROTOCOL_VERSION) {
Com_Printf("rejected connect from version %i - %s\n", version, peername);
NET_OOB_Printf(stream, "print\nServer is version %s.\n", UFO_VERSION);
return;
}
Q_strncpyz(userinfo, Cmd_Argv(2), sizeof(userinfo));
if (userinfo[0] == '\0') { /* catch empty userinfo */
Com_Printf("Empty userinfo from %s\n", peername);
NET_OOB_Printf(stream, "print\nConnection refused.\n");
return;
}
if (strchr(userinfo, '\xFF')) { /* catch end of message in string exploit */
Com_Printf("Illegal userinfo contained xFF from %s\n", peername);
NET_OOB_Printf(stream, "print\nConnection refused.\n");
return;
}
if (strlen(Info_ValueForKey(userinfo, "ip"))) { /* catch spoofed ips */
Com_Printf("Illegal userinfo contained ip from %s\n", peername);
NET_OOB_Printf(stream, "print\nConnection refused.\n");
return;
}
/* force the IP key/value pair so the game can filter based on ip */
Info_SetValueForKey(userinfo, sizeof(userinfo), "ip", peername);
/* find a client slot */
cl = NULL;
while ((cl = SV_GetNextClient(cl)) != NULL)
if (cl->state == cs_free)
break;
if (cl == NULL) {
NET_OOB_Printf(stream, "print\nServer is full.\n");
Com_Printf("Rejected a connection - server is full.\n");
return;
}
/* build a new connection - accept the new client
* this is the only place a client_t is ever initialized */
OBJZERO(*cl);
playernum = cl - SV_GetClient(0);
player = PLAYER_NUM(playernum);
cl->player = player;
cl->player->num = playernum;
{
const ScopedMutex scopedMutex(svs.serverMutex);
connected = svs.ge->ClientConnect(player, userinfo, sizeof(userinfo));
}
/* get the game a chance to reject this connection or modify the userinfo */
if (!connected) {
const char *rejmsg = Info_ValueForKey(userinfo, "rejmsg");
if (rejmsg[0] != '\0') {
NET_OOB_Printf(stream, "print\n%s\nConnection refused.\n", rejmsg);
Com_Printf("Game rejected a connection from %s. Reason: %s\n", peername, rejmsg);
} else {
NET_OOB_Printf(stream, "print\nConnection refused.\n");
Com_Printf("Game rejected a connection from %s.\n", peername);
}
return;
}
/* new player */
cl->player->inuse = true;
cl->lastmessage = svs.realtime;
/* parse some info from the info strings */
strncpy(cl->userinfo, userinfo, sizeof(cl->userinfo) - 1);
SV_UserinfoChanged(cl);
/* send the connect packet to the client */
if (sv_http_downloadserver->string[0])
NET_OOB_Printf(stream, "client_connect dlserver=%s", sv_http_downloadserver->string);
else
NET_OOB_Printf(stream, "client_connect");
SV_SetClientState(cl, cs_connected);
Q_strncpyz(cl->peername, peername, sizeof(cl->peername));
cl->stream = stream;
NET_StreamSetData(stream, cl);
}
/*
* sv_clientconnect_done
* callback for clientconnect POST request
*/
static void sv_mm_clientconnect_done( stat_query_t *query, qboolean success, void *customp )
{
stat_query_section_t *root, *ratings_section;
int session_id, isession_id;
client_t *cl;
edict_t *ent;
/*
* ch : JSON API
* {
* id: [int], // 0 on error, > 0 on logged-in user, < 0 for "anonymous" user
* login: [string], // login-name for user on success
* ratings: [
* { gametype: [string], rating: [float]: deviation: [float] }
* ..
* ]
* }
*/
/*
* since we are now generating the local session in SV_MM_ClientConnect, we should
* check if session_id < 0 just in case so that we wont try to regenerate local
* session or do anything stupid like that
* (currently we dont even tell MM about these so ignore)
*/
session_id = (int)customp;
isession_id = 0;
cl = SV_MM_ClientForSession( session_id );
if( cl == NULL )
{
// or figure out the validation anyway from the received session-id?
Com_Printf("SV_MM_ClientConnect: Couldnt find client with session-id %d\n", session_id );
return;
}
if( !success )
Com_Printf( "SV_MM_ClientConnect: Error\n" );
else
{
root = sq_api->GetRoot( query );
if( query == NULL )
{
Com_Printf("SV_MM_ParseResponse: Failed to parse data\n");
}
else
{
isession_id = (int)sq_api->GetNumber( root, "id" );
if( isession_id == 0 )
{
Com_Printf( "SV_MM_ClientConnect: Client not logged in\n");
}
else if( isession_id != session_id )
{
Com_Printf( "SV_MM_ClientConnect: Session-id doesnt match %d -> %d\n", isession_id, session_id );
isession_id = 0;
}
else
{
const char *login = sq_api->GetString( root, "login" );
ratings_section = sq_api->GetSection( root, "ratings" );
Q_strncpyz( cl->mm_login, login, sizeof( cl->mm_login ) );
if( !Info_SetValueForKey( cl->userinfo, "cl_mm_login", login ) ) {
Com_Printf( "Failed to set infokey cl_mm_login for player %s\n", login );
}
if( ge != NULL && ratings_section != NULL )
{
int idx = 0;
stat_query_section_t *element = sq_api->GetArraySection( ratings_section, idx++ );
ent = EDICT_NUM( (cl - svs.clients) + 1 );
while( element != NULL )
{
ge->AddRating( ent, sq_api->GetString( element, "gametype" ),
sq_api->GetNumber( element, "rating" ),
sq_api->GetNumber( element, "deviation" ) );
element = sq_api->GetArraySection( ratings_section, idx++ );
}
}
SV_UserinfoChanged( cl );
}
}
}
// unable to validate client, either kick him out or force local session
if( isession_id == 0 )
{
if( sv_mm_loginonly->integer )
{
SV_DropClient( cl, DROP_TYPE_GENERAL, "Error: This server requires login. Create account at http://www.warsow.net/" );
return;
}
// TODO: check that session_id >= 0
isession_id = SV_MM_GenerateLocalSession();
Com_Printf("SV_MM_ClientConnect: Forcing local_session %d on client %s\n", isession_id, cl->name );
cl->mm_session = isession_id;
// TODO: reflect this to the userinfo
Info_SetValueForKey( cl->userinfo, "cl_mm_session", va("%d", isession_id ) );
// We should also notify MM about the new local session id?
// Or another option would be that MM doesnt track local sessions at all,
// it just emits the results straight away.
// resend scc query
// cl->socket->address
}
Com_Printf("SV_MM_ClientConnect: %s with session id %d\n", cl->name, cl->mm_session );
}
/*
==================
SV_DirectConnect
A "connect" OOB command has been received
==================
*/
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
MAC_STATIC client_t temp;
gentity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
char *denied;
Com_DPrintf ("SVC_DirectConnect ()\n");
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
version = atoi( Info_ValueForKey( userinfo, "protocol" ) );
if ( version != PROTOCOL_VERSION ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer uses protocol version %i.\n", PROTOCOL_VERSION );
Com_DPrintf (" rejected connect from version %i\n", version);
return;
}
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
// see if the challenge is valid (local clients don't need to challenge)
if ( !NET_IsLocalAddress (from) ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nNo challenge for address.\n" );
return;
} else {
// force the "ip" info key to "localhost"
Info_SetValueForKey( userinfo, "ip", "localhost" );
}
newcl = &temp;
memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < 1 ; i++,cl++)
{
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) )
{
if (( sv.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000))
{
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
goto gotnewcl;
}
}
newcl = NULL;
for ( i = 0; i < 1 ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer is full.\n" );
Com_DPrintf ("Rejected a connection.\n");
return;
}
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the address
Netchan_Setup (NS_SERVER, &newcl->netchan , from, qport);
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = ge->ClientConnect( clientNum, qtrue, eSavedGameJustLoaded ); // firstTime = qtrue
if ( denied ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", denied );
Com_DPrintf ("Game rejected a connection: %s.\n", denied);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint( NS_SERVER, from, "connectResponse" );
newcl->state = CS_CONNECTED;
newcl->nextSnapshotTime = sv.time;
newcl->lastPacketTime = sv.time;
newcl->lastConnectTime = sv.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
}
/*
===================
SV_ExecuteClientMessage
The current net_message is parsed for the given client
===================
*/
void SV_ExecuteClientMessage(client_t *cl){
int c;
char *s;
usercmd_t nullcmd;
usercmd_t oldest, oldcmd, newcmd;
int net_drop;
int stringCmdCount;
int checksum, calculatedChecksum;
int checksumIndex;
qboolean move_issued;
int lastframe;
sv_client = cl;
sv_player = sv_client->edict;
// only allow one move command
move_issued = false;
stringCmdCount = 0;
while(1){
if(net_message.readcount > net_message.cursize){
Com_Printf("SV_ReadClientMessage: badread\n");
SV_DropClient(cl);
return;
}
c = MSG_ReadByte(&net_message);
if(c == -1)
break;
switch(c){
default:
Com_Printf("SV_ReadClientMessage: unknown command char\n");
SV_DropClient(cl);
return;
case clc_nop:
break;
case clc_userinfo:
strncpy(cl->userinfo, MSG_ReadString(&net_message), sizeof(cl->userinfo) - 1);
SV_UserinfoChanged(cl);
break;
case clc_move:
if(move_issued)
return; // someone is trying to cheat...
move_issued = true;
checksumIndex = net_message.readcount;
checksum = MSG_ReadByte(&net_message);
lastframe = MSG_ReadLong(&net_message);
if(lastframe != cl->lastframe){
cl->lastframe = lastframe;
if(cl->lastframe > 0){
cl->frame_latency[cl->lastframe&(LATENCY_COUNTS - 1)] =
svs.realtime - cl->frames[cl->lastframe & UPDATE_MASK].senttime;
}
}
memset(&nullcmd, 0, sizeof(nullcmd));
MSG_ReadDeltaUsercmd(&net_message, &nullcmd, &oldest);
MSG_ReadDeltaUsercmd(&net_message, &oldest, &oldcmd);
MSG_ReadDeltaUsercmd(&net_message, &oldcmd, &newcmd);
if(cl->state != cs_spawned){
cl->lastframe = -1;
break;
}
// if the checksum fails, ignore the rest of the packet
calculatedChecksum = COM_BlockSequenceCRCByte(
net_message.data + checksumIndex + 1,
net_message.readcount - checksumIndex - 1,
cl->netchan.incoming_sequence);
if(calculatedChecksum != checksum){
Com_DPrintf("Failed command checksum for %s(%d != %d)/%d\n",
cl->name, calculatedChecksum, checksum,
cl->netchan.incoming_sequence);
return;
}
if(!paused->value){
net_drop = cl->netchan.dropped;
if(net_drop < 20){
// if(net_drop > 2)
// Com_Printf("drop %i\n", net_drop);
while(net_drop > 2){
SV_ClientThink(cl, &cl->lastcmd);
net_drop--;
}
if(net_drop > 1)
SV_ClientThink(cl, &oldest);
if(net_drop > 0)
SV_ClientThink(cl, &oldcmd);
}
SV_ClientThink(cl, &newcmd);
}
cl->lastcmd = newcmd;
break;
case clc_stringcmd:
s = MSG_ReadString(&net_message);
// malicious users may try using too many string commands
if(++stringCmdCount < MAX_STRINGCMDS)
SV_ExecuteUserCommand(s);
if(cl->state == cs_zombie)
return; // disconnect command
break;
}
}
}
