// we're done processing this packet now
return true;
}
- // LordHavoc: disabled netquake control packet support in server
-#if 0
+ // 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 = BigLong(*((int *)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_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3))
{
- int c, control;
- // netquake control packets, supported for compatibility only
- if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
+ int c = data[4];
+ data += 5;
+ length -= 5;
+ switch (c)
{
- c = data[4];
- data += 5;
- length -= 5;
- switch (c)
+ case CCREQ_CONNECT:
+ if (developer.integer >= 10)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
+ if (length >= (int)strlen("QUAKE") + 1 + 1)
{
- case CCREQ_CONNECT:
- if (developer.integer >= 10)
- Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
- if (length >= (int)strlen("QUAKE") + 1 + 1)
+ if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
+ {
+ if (developer.integer >= 10)
+ Con_Printf("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");
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ else
{
- if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
+ // see if this is a duplicate connection request
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
+ break;
+ if (clientnum < svs.maxclients)
{
- if (developer.integer >= 10)
- Con_Printf("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");
- *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
- NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
- SZ_Clear(&net_message);
+ // duplicate connection request
+ if (realtime - client->connecttime < 2.0)
+ {
+ // client is still trying to connect,
+ // so we send a duplicate reply
+ if (developer.integer >= 10)
+ Con_Printf("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)));
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+#if 0
+ else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
+ {
+ SV_SendServerinfo(client);
+ // the old client hasn't sent us anything
+ // in quite a while, so kick off and let
+ // the retry take care of it...
+ //host_client = client;
+ //SV_DropClient (true);
+ }
+#endif
}
else
{
- // see if this is a duplicate connection request
+ // this is a new client, find a slot
for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
- if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
+ if (!client->active)
break;
- if (clientnum < svs.maxclients)
+ if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
{
- // duplicate connection request
- if (realtime - client->connecttime < 2.0)
- {
- // client is still trying to connect,
- // so we send a duplicate reply
- if (developer.integer >= 10)
- Con_Printf("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)));
- *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
- NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
- SZ_Clear(&net_message);
- }
-#if 0
- else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
- {
- SV_SendServerinfo(client);
- // the old client hasn't sent us anything
- // in quite a while, so kick off and let
- // the retry take care of it...
- //host_client = client;
- //SV_DropClient (true);
- }
-#endif
+ // connect to the client
+ // everything is allocated, just fill in the details
+ strlcpy (conn->address, addressstring2, sizeof (conn->address));
+ if (developer.integer >= 10)
+ Con_Printf("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)));
+ *((int *)net_message.data) = BigLong(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);
}
else
{
- // this is a new client, find a slot
- for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
- if (!client->active)
- break;
- if (clientnum < svs.maxclients && (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.integer >= 10)
- Con_Printf("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)));
- *((int *)net_message.data) = BigLong(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);
- }
- else
- {
- if (developer.integer >= 10)
- Con_Printf("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");
- *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
- NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
- SZ_Clear(&net_message);
- }
+ if (developer.integer >= 10)
+ Con_Printf("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");
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
}
}
}
- break;
-#if 0
- case CCREQ_SERVER_INFO:
+ }
+ break;
+ case CCREQ_SERVER_INFO:
+ if (developer.integer >= 10)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
+ if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
+ {
+ int numclients;
+ char myaddressstring[128];
if (developer.integer >= 10)
- Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
- if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
+ Con_Printf("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);
+ *((int *)net_message.data) = BigLong(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.integer >= 10)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
+ 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)
{
- if (developer.integer >= 10)
- Con_Printf("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);
- UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
- MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
- MSG_WriteString(&net_message, hostname.string);
- MSG_WriteString(&net_message, sv.name);
- MSG_WriteByte(&net_message, net_activeconnections);
- MSG_WriteByte(&net_message, svs.maxclients);
- MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ 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, (int)client->edict->fields.server->frags);
+ MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
+ MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
*((int *)net_message.data) = BigLong(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.integer >= 10)
- Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
- 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, (int)client->edict->fields.server->frags);
- MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
- MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
- *((int *)net_message.data) = BigLong(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.integer >= 10)
- Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
- if (sv.active)
- {
- char *prevCvarName;
- cvar_t *var;
+ }
+ break;
+ case CCREQ_RULE_INFO:
+ if (developer.integer >= 10)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
+ if (sv.active)
+ {
+ char *prevCvarName;
+ cvar_t *var;
- // find the search start location
- prevCvarName = MSG_ReadString();
- var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
+ // 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);
- }
- *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
- NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
- SZ_Clear(&net_message);
+ // 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);
}
- break;
-#endif
- default:
- break;
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ 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;
+ break;
+ default:
+ break;
}
+ // we may not have liked the packet, but it was a valid control
+ // packet, so we're done processing this packet now
+ return true;
}
-#endif
if (host_client)
{
if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol)) == 2)
projects / xonotic / darkplaces.git / commitdiff