// This file written mostly by Tim Johnson (Tim@TimMUD)
#include <save.h>
#include <daemons.h>
#ifndef FILTER_D
#define FILTER_D "/secure/daemon/filter"
#endif
static void process_channel(mixed fd, mixed *info){
string mudname;
string sendermsg, sendername, senderrealname, sendermud;
string targetname, targetmud, targstr = "";
switch(info[0][8..]){ // what is after the "channel-"
case "m": // message
case "e": // emote
case "t": // targetted emote
// (drop-through from m/e is intentional)
// Probably should check if the target is 0@0 like it should be,
// and give a warning if it's not... I don't carethough, I'll just
// ignore the target and save some CPU.
// Check if string parts are strings...
if(info[0][8..]=="t"){
if(sizeof(info)!=13 || !stringp(info[9]) || !stringp(info[10]) ||
!stringp(info[11]) || !stringp(info[12]) ||!sizeof(info[11])){
send_error(info[2],info[3],"bad-pkt","Bad packet format.",info);
return;
}
if(!grepp(info[9],"$N")){
info[9] = info[9] + " (from "+info[11]+"@"+info[2]+")";
info[10] = info[10] + " (from "+info[11]+"@"+info[2]+")";
}
sendername = info[11];
senderrealname = info[3];
sendermud = info[2];
targetname = info[12];
targetmud = info[7];
sendermsg = info[9];
}
else{ // m, e
if(sizeof(info)!=9 || !stringp(info[3]) || !sizeof(info[3])){
send_error(info[2],info[3],"bad-pkt","Bad packet format.",info);
return;
}
if(!stringp(info[7]) || !sizeof(info[7])){
info[7] = info[3];
}
if(info[0] == "channel-e" && !grepp(info[8],"$N"))
info[8] = info[8] + " (from "+info[7]+"@"+info[2]+")";
sendername = info[7];
senderrealname = info[3];
sendermud = info[2];
sendermsg = info[8];
}
if(targetname && targetmud) {
targstr = "Target: "+targetname+"@"+targetmud;
}
if(info[4]!=0 || info[5]!=0 || !stringp(info[6]) ||
!stringp(info[7]) || !stringp(info[8])){
send_error(info[2],info[3],"bad-pkt","Bad packet format.",info);
return;
}
if(!channels[info[6]]){ // error, channel is not registered!
send_error(info[2],info[3],"unk-channel",
"Unknown channel: "+info[6],info);
return;
}
if(listening[info[6]] &&
member_array(info[2],listening[info[6]])==-1){
// if mud is not listening, then make them listen
// and let them know they weren't listening.
send_error(info[2],info[3],"warning",
// No applicable message codes... change
// "warning" to something else if you want.
"Your mud wasn't listening to "+info[6]+
", so I'll start you listening right now.",info);
// Could do all the listen stuff, or could just
// pretend they requested it... I'm gonna pretend...
process_channel(fd,({ "channel-listen", 5, info[2], 0,
router_name, 0, info[6], 1 }));
}
if(channels[info[6]][0]==2){ // filtered channel
if(channels[info[6]][1]!=info[2]){ // not from chan owner
// if from anybody else other than the owner,
// check if the owner is online, then either give
// an error, or forward to the owner...
if(undefinedp(connected_muds[channels[info[6]][1]])){
send_error(info[2],info[3],"unk-dst",
channels[info[6]][1]+" is not online to filter "+info[6],
info);
return;
}
if(info[4]!=0 || info[5]!=0 || !stringp(info[6]) ||
!stringp(info[7]) || !stringp(info[8])){
send_error(info[2],info[3],"bad-pkt","Bad packet format",info);
return;
}
write_data(connected_muds[channels[info[6]][1]],({
"chan-filter-req",
5,
router_name,
0,
channels[info[6]][1], // mud name of chan owner
0,
info[6],
info
}));
return;
}
// IS from chan owner, just broadcast it...
// drop through and broadcast like the other types do...
}
// at this point, they're wanting to do a message on a
// selective banned/allowed channel, or else are the owner
// of a filtered channel and they have not been
// blocked, so I will just do it...
server_log(sendername+"("+senderrealname+")@"+sendermud+" "+": "+
sendermsg+" "+targstr+"\n",info[6]);
if(member_array(info[2],channels[info[6]][2])!=-1){
// in list, you're banned...
send_error(info[2],0,"not-allowed",
"Banned from "+info[6],info);
return;
}
if(intp(fd)) this_object()->SendMessage(info);
else if(member_array(fd, this_object()->GetBannedMuds()) != -1){
return;
}
info[8] = FILTER_D->eventFilter(info[8]);
foreach(mudname in keys(connected_muds)){
if(listening[info[6]] && member_array(mudname, listening[info[6]])!=-1)
write_data(connected_muds[mudname],info);
}
return;
case "add":
if(!stringp(info[4])) info[4] = this_object()->GetRouterName();
// check if already exists...
if(!info[6]) return;
if(channels[info[6]]){
send_error(info[2],info[3],"not-allowed",
"Channel already exists: "+info[6],info);
trr(info[3]+"@"+info[2]+" failed to create the channel: "
+info[6]+ " because it already exists.","red");
return;
}
// check if a valid channel name (illegal characters?
if(!stringp(info[6]) || sizeof(info[6]) > 80){
send_error(info[2],info[3],"not-allowed",
"Invalid channel name: "+identify(info[6]),info);
trr(info[3]+"@"+info[2]+" failed to create the channel: "
+info[6]+ "because it has an invalid name.","red");
return;
}
// check if other stuff is valid, like channel_type is 0,1,2
if(!intp(info[7]) || (info[7] < 0 || info[7] > 2)){
send_error(info[2],info[3],"not-allowed",
"Invalid channel type: "+identify(info[7]),info);
trr(info[3]+"@"+info[2]+" failed to create the channel: "
+info[6]+ "because it has an invalid type.","red");
return;
}
// at this point, is being successfully added...
channel_update_counter++;
channels[info[6]]=({ distinct_array(info[7]), info[2], ({}) });
channel_updates[info[6]] = channel_update_counter;
server_log(info[3]+"@"+info[2]+" created the channel: "+info[6]+"\n");
// broadcast an update saying that this channel is added or changed now
// chanlist-reply packet to everybody (who has a channel service?)
broadcast_chanlist(info[6]);
SendList( ([ "channels" : ([ info[6] : channels[info[6]] ]),
"listening" : ([]) ]),
0, "chanlist" );
SaveObject(SAVE_ROUTER);
return;
case "remove":
if(!stringp(info[4])) info[4] = this_object()->GetRouterName();
if(!channels[info[6]]){ // error, channel is not registered!
send_error(info[2],info[3],"unk-channel",
"Unknown channel: "+info[6],info);
return;
}
if(channels[info[6]][1] != info[2] &&
clean_fd(socket_address(fd)) != router_ip ){
send_error(info[2],info[3],"not-allowed","Channel "+
info[6]+" owned by: "+channels[info[6]][1],info);
return;
}
// at this point, is being removed by the owner...
channel_update_counter++;
map_delete(channels,info[6]);
map_delete(channel_updates,info[6]);
server_log(info[3]+"@"+info[2]+" deleted the channel: "+info[6]+"\n");
// broadcast an update saying that this channel is gone now
broadcast_chanlist(info[6]);
SaveObject(SAVE_ROUTER);
SendList( ([ "channels" : ([ info[6] : -1 ]), "listening" : ([]) ]),
0, "chanlist" );
return;
case "admin":
if(!stringp(info[4])) info[4] = this_object()->GetRouterName();
// add/delete muds from the 2 lists...
if(channels[info[6]][1]!=info[2] &&
clean_fd(socket_address(fd)) != router_ip ){
send_error(info[2],info[3],"not-allowed","Channel "+
info[6]+" owned by: "+channels[info[6]][1],info);
return;
}
if(!listening[info[6]]) listening[info[6]] = ({});
if(sizeof(info[7])){ // add to list...
channels[info[6]][2] += info[7];
channels[info[6]][2] = distinct_array(channels[info[6]][2]);
// if add to ban list, unlisten...
if(channels[info[6]][0]==0){ // type 0 means selective ban
listening[info[6]] -= info[7];
listening[info[6]] = distinct_array(listening[info[6]]);
}
}
if(sizeof(info[8])){ // remove from list...
channels[info[6]][2] -= info[8];
channels[info[6]][2] = distinct_array(channels[info[6]][2]);
if(channels[info[6]][0]!=0){ // type 0 means selective ban...
// selective allow and filtered are the same though...
// so if not selective ban, then act like selective allow...
// if removed from allow list, unlisten...
listening[info[6]] -= info[8];
listening[info[6]] = distinct_array(listening[info[6]]);
}
}
SendList( ([ "channels" : ([ info[6] : channels[info[6]] ]) ]),
0, "chanlist" );
SaveObject(SAVE_ROUTER);
return;
case "listen": // mudname=info[2], channame=info[6], on_or_off=info[7]
if(!channels[info[6]]){ // error, channel is not registered!
send_error(info[2],info[3],"unk-channel",
"Unknown channel: "+info[6],info);
return;
}
if(!listening) listening=([ ]);
if(!listening[info[6]]) listening[info[6]]=({ }); // first MUD to listen
if(info[7]){ // on_or_off is on
if(member_array(info[2],listening[info[6]])!=-1)
return; // already listening, ignore them
}
else{ // on_or_off is off
if(member_array(info[2],listening[info[6]])==-1)
return; // already NOT listening, ignore them
}
// only CHANGES should get to this point
switch(channels[info[6]][0]){
case 0: // selectively banned
if(member_array(info[2],channels[info[6]][2])!=-1){
// in list, you're banned...
send_error(info[2],0,"not-allowed",
"Banned from "+info[6],info);
return;
}
// not in ban list at this point
if(info[7])
listening[info[6]] += ({ info[2] });
else
listening[info[6]] -= ({ info[2] });
listening[info[6]] = distinct_array(listening[info[6]]);
SaveObject(SAVE_ROUTER);
return;
case 1: // selectively allowed
if(member_array(info[2],channels[info[6]][2])==-1 &&
info[2] != channels[info[6]][1]){
// NOT in list, you're banned!
send_error(info[2],0,"not-allowed",
"Not in allow list for "+info[6],info);
return;
}
// in allow list at this point
if(info[7])
listening[info[6]] += ({ info[2] });
else
listening[info[6]] -= ({ info[2] });
listening[info[6]] = distinct_array(listening[info[6]]);
SaveObject(SAVE_ROUTER);
return;
case 2: // filtered... act like selectively allowed
if(member_array(info[2],channels[info[6]][2])==-1 &&
info[2] != channels[info[6]][1]){
// NOT in list, you're banned!
send_error(info[2],0,"not-allowed",
"Not in allow list for "+info[6],
info);
return;
}
// in allow list at this point
if(info[7])
listening[info[6]] += ({ info[2] });
else
listening[info[6]] -= ({ info[2] });
listening[info[6]] = distinct_array(listening[info[6]]);
SaveObject(SAVE_ROUTER);
return;
} // switch
default: // trying to do "channel-blah"
send_error(info[2],info[3],"unk-type","I don't know what "+info[0]+
" means.",info);
return;
}
}
void list_chans(){
mapping tmp_chans = channels;
foreach(mixed key, mixed val in tmp_chans){
trr("Key: "+identify(key));
trr("Val: "+identify(val));
trr("--\n","red");
}
}
